JP2008164835A - Liquid crystal display panel, liquid crystal display element, liquid crystal display device, television receiver and substrate for liquid crystal display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display panel, a liquid crystal display element, a liquid crystal display device, a television receiver, and a substrate for a liquid crystal display panel, in which the use amount of a liquid crystal material can be reduced without degrading the display quality. <P>SOLUTION: The liquid crystal display panel includes a pair of substrate 1, 2 opposing to each other and a liquid crystal layer 8 disposed between the substrates, and the liquid crystal display panel has an insulating layer 26 in the liquid crystal layer side of at least one of the substrates, wherein the insulating layer is disposed in a light-shielding region in a plan view of the substrate and the liquid crystal layer is controlled to have a smaller thickness in a region where the insulating layer is disposed than in a pixel aperture portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a liquid crystal display panel, a liquid crystal display element, a liquid crystal display device, a television receiver, and a liquid crystal display panel substrate. More specifically, the present invention relates to a liquid crystal display panel, a liquid crystal display element, a liquid crystal display device, a television receiver, and a substrate for a liquid crystal display panel that can reduce the amount of liquid crystal material used.

Liquid crystal display devices are characterized by their small size, thinness, low power consumption, and light weight, and are therefore widely used in various electronic devices at present. In particular, an active matrix liquid crystal display device having a switching element is widely used in, for example, OA equipment such as a personal computer, AV equipment such as a television, portable equipment such as a mobile phone, and the like. In such a liquid crystal display device, in recent years, enlargement, high definition, improvement of the pixel effective area ratio (high aperture ratio), and the like are rapidly progressing.

In recent years, liquid crystal display devices have been required to improve quality by improving color purity (improving color reproduction range), and as a result, the color filter layer tends to be thick. On the other hand, the light shielding layer that shields light between the color filters is usually formed of a negative photosensitive resin (black), and the cross-sectional shape thereof is preferably a forward taper. Therefore, it has been difficult to make the light shielding layer thicker than the present state. This is because if the thickness of the light shielding layer is too large, the black photosensitive resin having a high optical density is not cured by the light exposure near the resin surface, and the uncured resin is side-etched by development. It is. Further, if the side etching of the uncured resin proceeds too much, the light shielding layer may be peeled off.

For this reason, there is a difference in film thickness between the light shielding layer and the color filter. This causes a problem that a step is generated between the color filter and the light shielding layer (that is, a problem that the upper surface of the substrate having the color filter layer cannot be flattened). As a result, when a liquid crystal display panel is configured, an extra liquid crystal material is used for the light shielding layer region that becomes a recess. Furthermore, as the panel size increases, the amount of extra liquid crystal material used is increasing.

On the other hand, various attempts have been made to solve the problem of the level difference (see, for example, Patent Documents 1 and 2). For example, Patent Document 1 covers a plurality of colored pixel patterns formed on a transparent substrate, a black photosensitive resin layer is provided on the entire surface of the transparent substrate, and exposure is performed from the black photosensitive resin layer side through a photomask. Subsequently, a color filter manufacturing method is disclosed in which development is performed to form a black matrix, and then the entire surface is exposed through the transparent substrate, followed by development processing again. According to this, it is described that a color filter with less surface irregularities can be obtained in a method for producing a color filter in which a black matrix is formed from a black photosensitive resin. However, according to this method, a process for flattening is separately required, so there is room for improvement in terms of simplifying the manufacturing process. In addition, when the black photosensitive resin is thickened, an uncured region may remain even after two exposures.

Further, for example, Patent Document 2 discloses a light-shielding body that shields a boundary portion between red, green, and blue color filters formed on a glass substrate and a color filter, and a transparent film having the same thickness as the light-shielding body under the color filter. A liquid crystal display color filter having a spacer is disclosed. Patent Document 2 discloses a liquid crystal display device in which a protective film is formed on a color filter for the purpose of flattening surface irregularities as a conventional technique (FIG. 17 of Patent Document 2). However, according to the technique described in Patent Document 2 and the conventional technique described in Patent Document 2, an extra process for forming the underlayer is required, so there is room for improvement in terms of simplifying the manufacturing process. there were. In addition, spacers and protective films are formed in the pixel openings, and since it is usually impossible to set the light transmittance of these spacers and protective films to 100%, the light transmittance of the pixel openings is reduced. The display quality may be reduced.

Note that when the array substrate and the counter substrate are bonded to each other with a sealing material, the distance between the substrates decreases in the light shielding layer and its vicinity, and the liquid crystal material is not sufficiently injected, or the amount of the liquid crystal material is affected. As a technique for preventing the occurrence of display defects in the light shielding layer and its vicinity, the light is opposed to the light shielding light that covers the peripheral portion of the effective display area in which the liquid crystal layer is provided between the array substrate and the counter substrate. When the substrates are bonded to a predetermined position of the opposing substrate and / or a predetermined position of the light shielding layer with a sealing material, it is possible to prevent a decrease in the distance between the substrates in the light shielding layer and the vicinity thereof. A liquid crystal display device having protrusions is disclosed (for example, see Patent Document 3).

In addition, as a technology to simultaneously and inexpensively form photo spacers and alignment control protrusions using one type of photosensitive resin by a one-step photolithography method, (1) a black matrix, colored pixels, and a transparent electrode layer are formed. A transparent photosensitive resin layer is formed on the transparent substrate, and (2) the transparent photosensitive resin layer is exposed through a photomask on which a pattern corresponding to the photo spacer and the alignment control protrusion is formed. Discloses a method of manufacturing a color filter for a liquid crystal display device that performs proximity exposure with a gap provided between the upper surface of the photomask and the film surface of the photomask (see, for example, Patent Document 4).

In addition, as a technology for preventing the occurrence of alignment defects in the ferroelectric liquid crystal due to the steps on the substrate and fully exhibiting the high-speed response and memory effect characteristics inherent in the ferroelectric liquid crystal element, a transparent electrode In a ferroelectric liquid crystal element in which a ferroelectric liquid crystal is sandwiched between a pair of parallel substrates formed with a color filter between at least one transparent electrode and the substrate, the color filter of each pixel has a photosensitive group as a molecule. It is formed to have almost the same film thickness by a photolithography process of a colored resin in which a coloring material is dispersed in a polyimide resin, and a pattern-shaped transparent electrode and an alignment control film are sequentially laminated on the color filter. A ferroelectric liquid crystal element is disclosed (for example, see Patent Document 5).

Furthermore, as a technique that can simplify the manufacturing process by controlling the alignment of the liquid crystal molecules without using a complicated alignment process, and can further improve the viewing angle dependency, it is sandwiched between a pair of substrates. In the liquid crystal display device that displays an image by applying a signal voltage to the liquid crystal layer, the surface of the side surface is made of at least a liquid crystal alignment resin on the liquid crystal layer side surface of the substrate, and the liquid crystal molecules of the liquid crystal layer are substantially aligned with the side surface. There has been disclosed a liquid crystal display device in which a plurality of proposed line patterns oriented in parallel or vertically are provided at intervals (see, for example, Patent Document 6).

And the board | substrate for display apparatuses which has the color filter layer formed on the board | substrate and the structure for planarization which planarizes the level | step-difference part formed in the edge part of the said color filter layer is disclosed (for example, (See Patent Document 7). 61 is a schematic diagram illustrating a configuration on the CF substrate side of a liquid crystal display device according to an embodiment described in Patent Document 7, FIG. 61 (a) is a schematic plan view, and FIG. 61 (b) is a schematic diagram in FIG. It is sectional drawing in line S1-S2. According to the liquid crystal display device described in Patent Document 7, as shown in FIG. 61, the planarization structure 691 is formed in the step 690 in the gap between the red, green, and blue color filters 621R, 621G, and 621B. ing. Accordingly, it is described that the alignment film solution can be prevented from flowing into the stepped portion, unevenness in the thickness of the alignment film can be prevented, and a liquid crystal display device with good display quality can be realized.
Japanese Patent Laid-Open No. 7-120613 JP-A-8-248409 JP 2004-77703 A JP 2006-221015 A Japanese Patent Laid-Open No. 63-60422 JP-A-8-29790 JP 2004-157257 A

The present invention has been made in view of the above-described situation, and a liquid crystal display panel, a liquid crystal display element, a liquid crystal display device, and a television receiver capable of reducing the amount of liquid crystal material used without deteriorating display quality. And it aims at providing the board | substrate for liquid crystal display panels.

The present inventors have made various studies on a liquid crystal display panel, a liquid crystal display element, a liquid crystal display device, a television receiver, and a substrate for a liquid crystal display panel that can reduce the amount of liquid crystal material used without deteriorating display quality. As a result, attention was paid to a light-shielding region that does not affect the display. In addition, an insulating layer is disposed in the light shielding region, and the liquid crystal layer has a thickness in a region overlapping with the insulating layer when the substrate is viewed in plan, which is smaller than the thickness in the pixel opening portion. The inventors have found that the amount of liquid crystal material used can be reduced without adversely affecting the quality, and have arrived at the present invention by conceiving that the above problems can be solved brilliantly.

That is, the present invention is a liquid crystal display panel comprising a pair of opposing substrates and a liquid crystal layer provided between the substrates, wherein the liquid crystal display panel is an insulating layer on the liquid crystal layer side of at least one of the substrates. The insulating layer is disposed in a light shielding region when the substrate is viewed in plan, and the liquid crystal layer is set such that the thickness in the region where the insulating layer is disposed is smaller than the thickness in the pixel opening. It is a liquid crystal display panel. Thereby, the usage-amount of liquid crystal material can be reduced, without deteriorating display quality.

Note that the pair of substrates usually includes an insulating substrate. Moreover, the said insulating layer may be provided in any one board | substrate and may be provided in both board | substrates.

The configuration of the liquid crystal display panel of the present invention is not particularly limited as long as such a component is formed as essential, and may or may not include other components. Absent.
A preferred embodiment of the liquid crystal display panel of the present invention will be described in detail below.

The insulating layer may be disposed in the non-display area when the substrate is viewed in plan.

At least one of the substrates has a light shielding layer on the liquid crystal layer side of the insulating substrate, and the insulating layer may be disposed in a region overlapping with the light shielding layer located in the non-display region when the substrate is viewed in plan. preferable. Thereby, it can suppress that the light transmittance of a pixel opening part reduces.

Note that in this specification, when a certain member is arranged in a region overlapping with another member when the substrate (panel) is viewed in a plan view or a cross-section, the certain member may be in contact with the other member. It ’s good or not.

The insulating layer is preferably disposed over substantially the entire non-display area when the substrate is viewed in plan. Thereby, the usage-amount of liquid-crystal material can be reduced more.

The liquid crystal display panel preferably has a sealing material between substrates in a non-display area, and the insulating layer preferably does not overlap the sealing material. Accordingly, the sealing material and the substrate can be reliably adhered regardless of the strength of adhesion between the insulating layer and the substrate or the sealing material.

The insulating layer preferably has a slit in the non-display area when the substrate is viewed in plan. Thereby, generation | occurrence | production of a residual bubble can be reduced and the injection | pouring time of liquid crystal material can be shortened. In addition, the amount of gas generated can be reduced.

At least one of the substrates preferably has wiring on the liquid crystal layer side of the insulating substrate, and the slit is preferably disposed in a region that does not overlap with the wiring when the substrate is viewed in plan. Thereby, generation | occurrence | production of a bubble can be suppressed, reducing the parasitic capacitance of wiring.

The slit is preferably arranged along the direction in which the liquid crystal flows in the step of injecting or dropping the liquid crystal when the substrate is viewed in plan. Thereby, the injection time of the liquid crystal material can be further shortened.

The slit is preferably arranged in a direction substantially parallel to the outline of the display area when the substrate is viewed in plan. Thereby, even when bubbles are generated in the non-display area, it is possible to prevent the bubbles from moving to the display area.

The insulating layer may be disposed in the display area when the substrate is viewed in plan.

At least one of the substrates preferably has a light shielding layer on the liquid crystal layer side of the insulating substrate, and the insulating layer is preferably disposed in a region overlapping the light shielding layer located in the display region when the substrate is viewed in plan view. . Thereby, it can suppress that the light transmittance of a pixel opening part reduces.

The insulating layer is preferably disposed in a region overlapping with a light shielding layer located in a boundary region between pixels arranged in the display region when the substrate is viewed in plan. Thereby, it can suppress that the light transmittance of a pixel opening part reduces.

The insulating layer is preferably disposed over substantially the entire light shielding region in the display region when the substrate is viewed in plan. Accordingly, it is possible to reduce the parasitic capacitance and the amount of liquid crystal material used while suppressing the light transmittance of the pixel opening from being reduced by the insulating layer.

It is preferable that at least one of the substrates has wiring on the liquid crystal layer side of the insulating substrate, and the insulating layer is disposed along the wiring in substantially the entire display area when the substrate is viewed in plan. Thereby, the usage-amount and parasitic capacitance of liquid crystal material can be reduced more.

The insulating layer is preferably disposed in a corner portion of the pixel when the substrate is viewed in plan. In the MVA mode or the like, even if the insulating layer is arranged at the corner of the pixel, the insulating layer hardly affects the alignment of the liquid crystal molecules in the pixel opening. Thus, by using the corners of the pixels, which are dead spaces that are not used for image display, as the arrangement space for the insulating layer, the area of the insulating layer when viewed in plan can be easily increased. Therefore, according to this embodiment, it is possible to more effectively reduce the amount of liquid crystal material used while suppressing a decrease in the light transmittance of the pixel opening.

At least one of the substrates has an alignment control protrusion on the liquid crystal layer side of the insulating substrate, and the insulating layer is integrated with the alignment control protrusion disposed at the corner of the pixel when the substrate is viewed in plan view. It is preferable to be formed. Thereby, the amount of liquid crystal material used can be more effectively reduced without complicating the manufacturing process and suppressing the decrease in the light transmittance of the pixel opening.

The insulating layer is preferably disposed on the opposite side of the center of the pixel of the alignment control protrusion disposed at the corner of the pixel when the substrate is viewed in plan. Thereby, it is possible to substantially eliminate the influence of the insulating layer on the alignment of the liquid crystal molecules in the pixel opening. Therefore, it is possible to more effectively reduce the amount of liquid crystal material used while more effectively suppressing the light transmittance of the pixel opening.

The insulating layer is preferably arranged in an island shape when the substrate is viewed in plan. Thereby, the applicability | paintability of alignment film can be improved. Further, a passage for the liquid crystal material can be secured, and generation of bubbles at the time of liquid crystal encapsulation can be suppressed.

The insulating layer preferably includes the same material as any member constituting the substrate having the insulating layer. Thereby, the manufacturing process can be simplified.

At least one of the substrates has a color filter layer including a plurality of color filters on the liquid crystal layer side of the insulating substrate, and the insulating layer is disposed on the substrate having the color filter layer and is the same as any one of the color filters. It is preferable that it is comprised including these materials. This makes it possible to share materials, development processes, and the like, so that the manufacturing process can be simplified.

At least one of the substrates preferably has an alignment control protrusion and / or an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate. Thereby, a liquid crystal mode having a multi-domain such as an MVA (Multi-domain Vertical Alignment) mode can be realized, so that a wide viewing angle can be achieved.

The insulating layer is disposed on at least one substrate having an alignment control protrusion and / or an alignment control auxiliary protrusion, and includes the same material as the alignment control protrusion and / or the alignment control auxiliary protrusion. It is preferable. This makes it possible to share materials, development processes, and the like, so that the manufacturing process can be simplified.

The insulating layer is disposed on at least one substrate having alignment control protrusions and / or alignment control auxiliary protrusions, and overlaps with the alignment control protrusions and / or alignment control auxiliary protrusions when the substrate is viewed in plan view. It is preferable to arrange in an area that does not become necessary. Thereby, since the insulating layer does not adversely affect the alignment control of the alignment control protrusion and / or the alignment control auxiliary protrusion, it is possible to prevent the display quality from deteriorating.

At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate, and the insulating layer is disposed on at least one substrate having the alignment control auxiliary protrusion, and the substrate is viewed in plan view. In addition, it is preferable that they are arranged with a gap between them and the alignment control auxiliary projections. As a result, the alignment control force of the alignment control auxiliary protrusions becomes too strong, and when the substrate is viewed in plan view, liquid crystal molecules directed in a direction substantially parallel or substantially perpendicular to the polarization axis direction of the polarizing plate increase. Can be suppressed. Accordingly, it is possible to suppress a decrease in the light transmittance of the pixel opening, and thus it is possible to prevent the display quality from being deteriorated.

At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate, and the insulating layer is formed integrally with a base portion of the alignment control auxiliary protrusion arranged at the corner of the pixel. The alignment control auxiliary projections preferably have a width that decreases from the root portion toward the tip when the substrate is viewed in plan. As a result, when the substrate is viewed in plan, liquid crystal molecules that are oriented obliquely with respect to the polarization axis direction of the polarizing plate can be increased. The amount of liquid crystal material used can be reduced more effectively.

At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate, and the insulating layer is integrated with a portion other than the tip of the alignment control auxiliary protrusion disposed at the corner of the pixel. It is preferable to be formed. As a result, when the substrate is viewed in plan, the number of liquid crystal molecules that are oriented obliquely with respect to the polarization axis direction of the polarizing plate can be increased, thereby further suppressing the decrease in the light transmittance of the pixel opening. However, the amount of liquid crystal material used can be reduced more effectively.

At least one of the substrates includes, on the liquid crystal layer side of the insulating substrate, in order from the insulating substrate side, a light shielding layer having an opening, a color filter layer in which a plurality of color filters are arranged in the opening of the light shielding layer, and a light shielding layer And a common electrode provided on substantially the entire surface of the color filter layer and an insulating layer, and the insulating layer is preferably disposed in a region overlapping with the light shielding layer when the substrate is viewed in plan view. Thereby, since it can suppress that the light transmittance of a pixel opening part reduces, generation | occurrence | production of a display defect can be suppressed.

The color filter layer preferably has a film thickness larger than that of the light shielding layer, and the insulating layer preferably has a film thickness larger than the step between the light shielding layer and the color filter. As a result, the parasitic capacitance and the amount of liquid crystal material used can be more effectively reduced.

One of the substrates has a common electrode on the liquid crystal layer side of the insulating substrate, the other of the substrate has a wiring on the liquid crystal layer side of the insulating substrate, and the insulating layer is disposed between the common electrode and the wiring It is preferred that Thereby, the parasitic capacitance generated between the common electrode and the wiring can be reduced. Normally, one of the substrates has a common electrode on the liquid crystal layer side of the insulating substrate, and the other of the substrates has a wiring on the liquid crystal layer side of the insulating substrate. The substrate having the common electrode may be a so-called counter substrate that forms a pair with the active matrix substrate. On the other hand, a substrate having wiring usually has switching elements, pixel electrodes arranged in a matrix, an interlayer insulating film, and the like in addition to the wiring. Thus, the substrate having wiring is usually an active matrix substrate having active elements. Further, the substrate on which the insulating layer is provided is not particularly limited, and the active matrix substrate is not limited to a normal array substrate, and in order to reduce the area depending on the alignment accuracy between the array and the black matrix, An array substrate (BM on Array) provided with a matrix, an array substrate (color filter on Array) provided with a color filter, and the like are included. The color filter is preferably disposed on the counter substrate from the viewpoint of shortening the lead time and ease of procurement.

The insulating layer is preferably disposed in a region that does not affect the alignment of the liquid crystal molecules in the pixel region when the substrate is viewed in plan, and the insulating layer is a light shielding region when the substrate is viewed in plan. More preferably, it is arranged in a region that does not affect the alignment of the liquid crystal molecules in the pixel region. Thereby, it can suppress more effectively that the light transmittance of a pixel opening part reduces.

One of the substrates has a pixel electrode on the liquid crystal layer side of the insulating substrate, and the insulating layer is preferably disposed in a region that does not overlap with the pixel electrode when the substrate is viewed in plan. As a result, when the voltage is applied between the pixel electrode and the common electrode, the liquid crystal orientation state is disturbed due to the influence of the insulating layer and the light transmittance of the pixel opening is more effectively suppressed. it can.

The insulating layer preferably has a forward tapered shape when the substrate is viewed in cross section. Thereby, the insulating layer can be easily formed using the material for the alignment control protrusion and / or the alignment control auxiliary protrusion. Moreover, the applicability | paintability of alignment film can be improved and the orientation state of a liquid crystal molecule can be stabilized.

The insulating layer is preferably colored. Thereby, the contrast ratio can be improved.

The insulating layer preferably has a light shielding property. Thereby, the contrast ratio can be improved.

In the liquid crystal display panel of the present invention, the above preferred embodiments can be combined as appropriate.

The present invention is also a liquid crystal display element including the liquid crystal display panel of the present invention. Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

The present invention is also a liquid crystal display device including the liquid crystal display element of the present invention. Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

The present invention is also a television receiver (TV device) including the liquid crystal display device of the present invention. Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

The present invention is also a liquid crystal display panel substrate used in a liquid crystal display panel comprising a pair of opposing substrates and a liquid crystal layer provided between the substrates, wherein the substrate for a liquid crystal display panel is a plan view of the substrate. It is also a liquid crystal display panel substrate having an insulating layer disposed in the light shielding region. Thereby, in the liquid crystal display panel produced using the liquid crystal display panel substrate of the present invention, the amount of liquid crystal material used can be reduced without deteriorating the display quality.

The configuration of the substrate for a liquid crystal display panel of the present invention is not particularly limited as long as such components are formed as essential, and other components may or may not be included. It is not a thing.

In the liquid crystal display panel substrate of the present invention, the following modes are preferred from the same viewpoint as the liquid crystal display panel of the present invention. That is, the insulating layer may be arranged in a region that becomes a non-display region when the substrate is viewed in plan. In addition, the area | region used as a non-display area | region means the area | region which becomes a non-display area | region more specifically, when a liquid crystal display panel is assembled using the board | substrate for liquid crystal display panels of this invention. The substrate for a liquid crystal display panel has a light shielding layer on a surface provided with an insulating layer, and the insulating layer overlaps with a light shielding layer located in a region to be a non-display region when the substrate is viewed in plan view. Preferably they are arranged. The insulating layer is preferably disposed over substantially the entire region to be a non-display region when the substrate is viewed in plan. The insulating layer preferably has a slit in a region that becomes a non-display region when the substrate is viewed in plan. It is preferable that the liquid crystal display panel substrate has a wiring on a surface provided with an insulating layer, and the slit is disposed in a region that does not overlap with the wiring when the substrate is viewed in plan. The slit is preferably arranged along the direction in which the liquid crystal flows in the step of injecting or dropping the liquid crystal when the substrate is viewed in plan. The slit is preferably arranged in a direction substantially parallel to the contour line of the region that becomes the display region when the substrate is viewed in plan. In addition, the area | region used as a display area means the area | region used as a display area when a liquid crystal display panel is assembled using the board | substrate for liquid crystal display panels of this invention more specifically. The insulating layer may be disposed in the display area when the substrate is viewed in plan. The liquid crystal display panel substrate has a light shielding layer on a surface provided with an insulating layer, and the insulating layer is disposed in a region overlapping with the light shielding layer located in a region to be a display region when the substrate is viewed in plan view. It is preferred that The insulating layer is preferably disposed in a region overlapping with a light shielding layer located in a boundary region between pixels arranged in the display region when the substrate is viewed in plan. The insulating layer is preferably disposed over substantially the entire light shielding region in the display region when the substrate is viewed in plan. The substrate for a liquid crystal display panel preferably has a wiring on a surface provided with an insulating layer, and the insulating layer is preferably arranged along the wiring in a substantially entire area of the display region when the substrate is viewed in plan. . The insulating layer is preferably disposed in a corner portion of the pixel when the substrate is viewed in plan. The liquid crystal display panel substrate has an alignment control protrusion on a surface provided with an insulating layer, and the insulating layer includes an alignment control protrusion disposed at a corner of the pixel when the substrate is viewed in plan view. It is preferable to form integrally. The insulating layer is preferably disposed on the opposite side of the center of the pixel of the alignment control protrusion disposed at the corner of the pixel when the substrate is viewed in plan. The insulating layer is preferably arranged in an island shape when the substrate is viewed in plan. The insulating layer preferably includes the same material as any member constituting the substrate for a liquid crystal display panel. The liquid crystal display panel substrate has a color filter layer including a plurality of color filters on a surface provided with an insulating layer, and the insulating layer includes the same material as any of the color filters. It is preferable. The liquid crystal display panel substrate preferably has an alignment control protrusion and / or an alignment control auxiliary protrusion on the surface provided with the insulating layer. The insulating layer preferably includes the same material as the alignment control protrusion and / or the alignment control auxiliary protrusion. The insulating layer is preferably disposed in a region that does not overlap with the alignment control protrusion and / or the alignment control auxiliary protrusion when the substrate is viewed in plan. The liquid crystal display panel substrate has alignment control auxiliary protrusions on the surface provided with the insulating layer, and the insulating layer has a gap between the alignment control auxiliary protrusions when the substrate is viewed in plan view. It is preferable that they are arranged. The liquid crystal display panel substrate has an alignment control auxiliary protrusion on the surface provided with the insulating layer, and the insulating layer is integrated with a root portion of the alignment control auxiliary protrusion arranged at the corner of the pixel. It is preferable that the orientation control auxiliary protrusions are formed so that the width thereof becomes narrower from the root part toward the tip part when the substrate is viewed in plan view. The liquid crystal display panel substrate has an alignment control auxiliary protrusion on the surface provided with the insulating layer, and the insulating layer is a portion other than the tip of the alignment control auxiliary protrusion arranged at the corner of the pixel. It is preferable to be formed integrally. The liquid crystal display panel substrate includes a light shielding layer having an opening on the surface on which the insulating layer is provided, and a color filter layer in which a plurality of color filters are arranged in the opening of the light shielding layer, It has a common electrode provided on substantially the entire surface of the light shielding layer and the color filter layer, and an insulating layer, and the insulating layer is preferably disposed in a region overlapping the light shielding layer when the substrate is viewed in plan view. . The color filter layer preferably has a film thickness larger than that of the light shielding layer, and the insulating layer preferably has a film thickness larger than the step between the light shielding layer and the color filter. The liquid crystal display panel substrate preferably has a common electrode on a surface provided with an insulating layer, and the insulating layer is disposed in an upper layer than the common electrode. The upper layer means a layer farther from the insulating substrate. It is preferable that the liquid crystal display panel substrate has a wiring on a surface provided with an insulating layer, and the insulating layer is disposed in an upper layer than the wiring. The liquid crystal display panel substrate preferably includes a pixel electrode on a surface provided with an insulating layer, and the insulating layer is preferably disposed in a region that does not overlap with the pixel electrode when the substrate is viewed in plan. The insulating layer preferably has a forward tapered shape when the substrate is viewed in cross section. The insulating layer is preferably colored. The insulating layer preferably has a light shielding property.

In the liquid crystal display panel substrate of the present invention, the above preferred embodiments can be appropriately combined.

The present invention is also a liquid crystal display panel including the liquid crystal display panel substrate of the present invention (hereinafter also referred to as “second liquid crystal display panel of the present invention”). Thereby, the usage-amount of liquid-crystal material can be reduced, without deteriorating display quality.

The present invention is also a liquid crystal display element including the second liquid crystal display panel of the present invention (hereinafter, also referred to as “second liquid crystal display element of the present invention”). Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

The present invention is also a liquid crystal display device including the second liquid crystal display element of the present invention (hereinafter also referred to as “second liquid crystal display device of the present invention”). Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

The present invention is also a television receiver (TV device) configured to include the second liquid crystal display device of the present invention. Thereby, the amount of liquid crystal used can be reduced without deteriorating the display quality.

According to the liquid crystal display panel of the present invention, the amount of liquid crystal material used can be reduced without deteriorating display quality.

Embodiments will be described below, and the present invention will be described in more detail with reference to the drawings. However, the present invention is not limited only to these embodiments.

<Embodiment 1>
(Configuration of liquid crystal display element)
FIG. 1 is a schematic plan view showing the configuration of the liquid crystal display element of the first embodiment. As shown in FIG. 1, the liquid crystal display element 200 of the present embodiment includes a liquid crystal display panel 101, a gate driver 52 connected to the gate terminal portion 50 of the liquid crystal display panel 101, and a source terminal portion 51 of the liquid crystal display panel 101. A source driver 53 connected to the gate driver 52, a printed wiring board (PWB) 54 connected to the gate driver 52 and the source driver 53, and a display control circuit 55 connected to the printed wiring board 54. Is done. The liquid crystal display panel 101 includes an active matrix substrate (not shown) and a counter substrate (not shown), which are a pair of opposing substrates, and polarizing plates (not shown) are pasted on both surfaces thereof. . Note that a liquid crystal layer (not shown) is sealed in the gap between the active matrix substrate and the counter substrate.

FIG. 2 is an exploded perspective view schematically showing a positional relationship between the liquid crystal display panel and two polarizing plates bonded to the liquid crystal display panel. The double arrows on the polarizing plates 56a and 56b indicate the polarization axis directions of the respective polarizing plates, and the white arrows indicate incident light from the light source. As shown in FIG. 2, two polarizing plates 56a and 56b are bonded to the liquid crystal display panel 101, and the polarizing axes (absorption axes) of the polarizing plates 56a and 56b are a plan view of the liquid crystal display panel. Sometimes (hereinafter also referred to as “when viewed in plan”), they are orthogonal to each other.

The image display method of the liquid crystal display element 200 is a multi-domain vertical alignment (MVA) method. Further, in the liquid crystal display panel 101, the direction in which the liquid crystal is tilted and aligned when a voltage higher than the threshold voltage is applied to the pixel electrode (liquid crystal layer) (hereinafter also referred to as “liquid crystal alignment direction”) is viewed in plan. Sometimes, it is set to a direction that forms an angle of about 45 degrees with respect to the polarization axis direction of the polarizing plates 56a and 56b. Therefore, when a voltage lower than the threshold voltage is applied to the pixel electrode in the liquid crystal display panel 101, or when no voltage is applied, the liquid crystal is aligned perpendicular to the substrate and the polarizing plates 56a and 56b. Accordingly, the incident light polarized by the polarizing plate 56a does not rotate in the process of passing through the liquid crystal layer in the liquid crystal display panel 101, and thus is not emitted from the polarizing plate 56b, resulting in black display. . On the other hand, when a voltage higher than the threshold voltage is applied to the pixel electrode in the liquid crystal display panel 101, the liquid crystal is tilted and oriented in a direction that forms an angle of about 45 degrees with respect to the polarization axis direction of the polarizing plates 56a and 56b. Yes. Therefore, the light polarized by the polarizing plate 56a rotates in the process of passing through the liquid crystal layer, and thus is emitted from the polarizing plate 56b. Thus, the liquid crystal display element 200 performs display in the normally black mode.

Further, in the liquid crystal display panel 101, the alignment directions of the liquid crystals are set to four orientations that form an angle of about 45 degrees with respect to the polarization axis directions of the polarizing plates 56a and 56b when viewed in plan. In this way, a wide viewing angle can be realized by dividing the alignment direction of the liquid crystal into four, that is, multi-domain.

(Configuration of LCD panel)
FIG. 3 is a schematic plan view showing the liquid crystal display panel of the first embodiment. As shown in FIG. 3, the liquid crystal display panel 101 of the present embodiment includes a display area (effective display area) 3 and a non-display area (frame area, non-effective) arranged around the display area 3 in the substrate surface. Display area) 4 and a terminal region 5 in which a gate terminal portion 50 and a source terminal portion 51 are provided. The display area 3 is an area for displaying an image, and is usually composed of a plurality of pixels arranged in a matrix. On the other hand, the non-display area 4 is an area in which no image is displayed, and is arranged in a peripheral area of the display area 3. The display area 3 usually includes a light shielding area provided around each pixel. The terminal region 5 corresponds to an overhanging portion of the insulating substrate that constitutes the active matrix substrate.

4A and 4B are schematic plan views illustrating the configuration of the liquid crystal display panel according to the first embodiment. FIG. 4A illustrates a corner of the liquid crystal display panel, and FIG. 4B illustrates the configuration of pixels in the display area. In the drawing, the region surrounded by the alternate long and short dash line represents BM 20, the region painted in gray represents the insulating layer 26, and the region painted in lattice represents the seal 9. FIG. 5 is a schematic cross-sectional view taken along the line AB in FIG. Further, FIG. 6 is a schematic plan view showing the configuration of the corners of the active matrix substrate of the first embodiment. FIG. 7 is a schematic plan view illustrating a configuration of a corner portion of the counter substrate according to the first embodiment. As shown in FIGS. 4 and 5, the liquid crystal display panel 101 of the present embodiment is provided between an active matrix substrate 1 and a counter substrate 2, which are a pair of substrates arranged so as to face each other, and between these substrates. And a liquid crystal layer 8. In addition, these substrates are held with a certain interval (cell gap) by a spacer (not shown). Examples of the spacer include columnar spacers and spherical spacers, but columnar spacers are preferable, whereby an insulating layer described later can be formed using the material of the columnar spacers. Further, as shown in FIG. 4, the liquid crystal layer 8 is sealed by a seal (sealing material) 9 provided so as to surround the liquid crystal layer 8 on the outermost side of the substrate, that is, on the outer peripheral side of the non-display area 4. Has been. Thus, the seal 9 is usually provided in the outermost area of the non-display area 4. In the liquid crystal display panel 101, the cell gap (the thickness of the liquid crystal layer 8) is about 3.5 μm. The liquid crystal layer 8 contains vertical alignment liquid crystal (nematic liquid crystal having negative dielectric anisotropy).

As shown in FIGS. 4, 5 and 6, the active matrix substrate 1 includes a transparent insulating substrate 10 such as glass and a gate bus line (scanning signal line, gate wiring) formed on the liquid crystal layer 8 side of the insulating substrate 10. ) 11, a gate insulating film (not shown) formed on substantially the entire surface of the insulating substrate 10 covering the gate bus line 11, an active element (switching element, not shown) such as a thin film transistor (TFT), A source bus line (data signal line, source wiring) 12, an interlayer insulating film (passivation film) 13 formed on substantially the entire surface of the insulating substrate 10 so as to cover the source bus line 12 and the active element, and an interlayer insulating film 13 A pixel electrode 14 made of a transparent conductive film or the like, and a vertical alignment film 17 a provided in contact with the liquid crystal layer 8. Note that the TFT is provided in a corner portion of the pixel. Further, the active matrix substrate 1 has a storage capacitor wiring (auxiliary capacitor wiring, not shown) formed of the same material as the gate bus line 11.

The pixel electrode 14 is connected to a drain electrode (drain lead wiring, not shown) through a contact hole (not shown) in the interlayer insulating film 13. The pixel electrodes 14 are arranged in a matrix in the display area 3 as shown in FIG. Further, the pixel electrode 14 is provided with an electrode slit (electrode removal portion) 15 for controlling the alignment of liquid crystal molecules. The electrode slits 15 are arranged substantially symmetrically when viewed in a plan view, and mainly in an oblique direction (preferably in a direction of about 45 °) with respect to the gate bus line 11 and the source bus line 12 (pixel boundary line). Be placed. Note that all the regions of the pixel electrode 14 in one pixel are configured to be electrically connected via a connection portion where the electrode slit 15 is not formed. Further, in the present embodiment, the pixel electrode 14 is arranged so as not to overlap the gate bus line 11 and the source bus line 12 when viewed in plan, but the end portions thereof are the gate bus line 11 and the source bus line. 12 may be provided so as to partially overlap. The vertical alignment film 17a is provided on the surface of the interlayer insulating film 13 and the pixel electrode 14 on the liquid crystal layer 8 side.

A gate lead-out wiring 18 and a source lead-out wiring 19 provided on the side of the gate terminal portion 50 and the source terminal portion 51 are connected to the gate bus line 11 and the source bus line 12. Although the gate bus line 11 and the gate lead-out line 18 are integrally formed, the source lead-out line 19 is formed of the material of the gate bus line 11 and is formed at the end of the display region 3 as described later. The source bus line 12 is connected in the vicinity of the non-display area 4 side.

In this specification, the gate bus line 11 and the gate lead-out wiring 18 for transmitting the scanning signal, the source bus line 12 and the source lead-out wiring 19 for transmitting the data signal, the storage capacitor wiring, the drain lead-out wiring, and the like are collectively referred to as wiring. To do. That is, in this specification, the wiring means a conductive member having functions of signal transmission and / or charge accumulation other than the pixel electrode, the common electrode, and the active element. The wiring includes a region extended to the active element. In addition, the wiring in the region extended to the active element may be called an electrode, and more specifically, may be called a source electrode or a drain electrode (drain lead-out wiring). That is, in this specification, the wiring includes an electrode of an active element.

The counter substrate 2 of the present embodiment includes a transparent insulating substrate 10 such as glass, a light shielding layer 20, a red color filter 21R, a green color filter 21G, and a blue color filter formed on the liquid crystal layer 8 side of the insulating substrate 10. A color filter layer (CF layer) 22 including 21B, a common electrode (counter electrode) 23 made of a transparent conductive film and the like, and an alignment control protrusion (hereinafter also referred to as a “linear protrusion”) formed on the common electrode 23. 24) and alignment control auxiliary protrusions (hereinafter also referred to as “linear auxiliary protrusions”) 25, and a vertical alignment film 1717b provided in contact with the liquid crystal layer 8. Thus, since the counter substrate 2 includes the CF layer 22, it is also called a color filter substrate. The linear protrusions 24 and the linear auxiliary protrusions 25 may be called main ribs (alignment control structures) and auxiliary ribs (auxiliary alignment control structures). Further, in the liquid crystal mode having the linear protrusions 24 such as the MVA mode, the linear auxiliary protrusions 25 may not be provided, but the occurrence of liquid crystal alignment disorder in the pixel region is suppressed, and the display quality is improved. From this point of view, it is preferable that the linear auxiliary protrusion 25 is provided together with the linear protrusion 24. The vertical alignment film 17 b is provided on the surface of the linear protrusion 24, the linear auxiliary protrusion 25, and the common electrode 23 on the liquid crystal layer 8 side. The pixel region is a region that transmits light in each pixel arranged in the display region, and is a so-called pixel opening.

The red color filter 21R, the green color filter 21G, and the blue color filter 21B are provided in a matrix corresponding to each of the plurality of pixel electrodes 14 provided on the active matrix substrate 1 side. The color filters 21R, 21G, and 21B have the same color filter in the column direction, and are repeatedly arranged in the order of the red color filter 21R, the green color filter 21G, and the blue color filter 21B in the row direction.

The light shielding layer (black matrix; BM) 20 is disposed in the gaps between the color filters and substantially the entire non-display area (frame area) 4 when viewed in plan. As described above, the BM 20 is provided in a lattice shape corresponding to the boundary region of each pixel in the display region 3 when viewed in plan. Then, the color filters 21R, 21G, and 21B are arranged in the opening region of the BM 20 so that the end portions thereof partially overlap the BM 20. The optical density OD value of BM20 is not particularly limited, but is preferably 3.0 or more, and more preferably 4.0 or more.

The common electrode 23 is generally provided on the surface of the BM 20 and the CF layer 22 on the liquid crystal layer 8 side, that is, on the substantially entire surface of the insulating substrate 10 so as to cover the BM 20 and the CF layer 22. The common electrode 23 may be called a counter electrode.

The linear protrusions 24 and the linear auxiliary protrusions 25 are protrusions for controlling the alignment of liquid crystal molecules contained in the liquid crystal layer 8, and are provided on the surface of the common electrode 23 on the liquid crystal layer 8 side. The linear protrusions 24 are arranged in a substantially V shape in each pixel when viewed in plan. More specifically, the linear protrusion 24 is obliquely (preferably approximately 45 ° direction) with respect to the gate bus line 11 and the source bus line 12 in the same manner as the electrode slit 15 when viewed in plan. Be placed. Further, the linear protrusions 24 and the electrode slits 15 are arranged substantially in parallel when viewed in plan. As a result, when a voltage equal to or higher than the threshold voltage is applied to the pixel electrode 14 (liquid crystal layer 8), the liquid crystal molecules contained in the liquid crystal layer 8 extend in the direction in which the linear protrusions 24 and the electrode slits 15 extend when viewed in plan. On the other hand, it is inclined and oriented in a substantially vertical direction. On the other hand, the linear auxiliary projection 25 is a projection smaller than the linear projection 24 and is provided as necessary to prevent disclination of liquid crystal molecules. More specifically, the linear auxiliary protrusion 25 is provided substantially parallel to the gate bus line 11 or the source bus line 12 when viewed in plan, and the linear auxiliary protrusion 25 is mainly a plane. When viewed, the electrode slit 15 disposed in a direction of about 45 ° with respect to the gate bus line 11 and the source bus line 12 is provided so as to intersect at an acute angle (preferably about 45 °). Furthermore, the linear auxiliary protrusions 25 are mainly arranged at the end of the pixel region when viewed in plan. The linear auxiliary protrusions 25 are usually formed integrally with the linear protrusions 24 using the same material. In FIG. 4B, the white portion functions as the linear protrusion 24 and the shaded portion functions as the linear auxiliary protrusion 25. Moreover, in this embodiment, the width | variety of the linear protrusion 24 and the linear auxiliary | assistant protrusion 25 is about 8-12 micrometers and 5-10 micrometers, respectively, and the height is respectively 1-2 micrometers and 0.5-1.5 micrometers. Degree. As described above, it is preferable that the linear auxiliary protrusion 25 is formed to have a narrow width and a low height as compared with the linear protrusion 24. This reduces liquid crystal molecules that are aligned in the alignment direction that does not contribute to the light transmittance of the pixel opening (substantially parallel or substantially perpendicular to the polarization axis direction of the polarizing plate when viewed in plan), and transmits light. The rate can be improved.

The insulating layer 26 is disposed in a light shielding region such as the BM 20 when viewed in plan, and the liquid crystal layer 8 is set so that the thickness in the region where the insulating layer 26 is disposed is smaller than the thickness in the pixel opening. Has been. Accordingly, the occupied volume of the liquid crystal layer, that is, the amount of the liquid crystal material used can be reduced without deteriorating the display quality. The pixel opening is a region that transmits light in each pixel arranged in the display region.

Note that the insulating layer 26 is disposed closer to the liquid crystal layer than the wiring. Therefore, normally, the gate insulating film disposed in a layer between wirings located in different layers and the insulating film 26 are clearly distinguished. In addition, the insulating layer 26 is appropriately and selectively disposed so as to overlap with the wiring when viewed in plan. Therefore, usually, the interlayer insulating film formed on substantially the entire surface of the substrate and the insulating film 26 are clearly distinguished. Furthermore, since the insulating layer 26 is disposed closer to the insulating substrate than the alignment film, it is clearly distinguished from the alignment film. The insulating layer 26 may have a structure in which a plurality of insulating layers are stacked.

Further, the counter substrate 2 of the present embodiment has a liquid crystal between the common electrode 23 and wirings (signal lines, lead-out wirings and other wirings) provided on the active matrix substrate 1 in the display region 3 and the non-display region 4. An insulating layer 26 is provided on the layer 8 side. As described above, a pair of opposing substrates and a liquid crystal layer provided between the substrates are provided, a common electrode is provided on the liquid crystal layer side of one substrate, and wiring is provided on the liquid crystal layer side of the other substrate. A liquid crystal display panel, wherein at least one of the substrates constituting the liquid crystal display panel has an insulating layer disposed between the common electrode of one substrate and the wiring of the other substrate on the liquid crystal layer side. The parasitic capacitance existing between the opposing wiring and the common electrode can be reduced. The common electrode 23 is usually formed of a transparent electrode, and is formed on substantially the entire surface of the counter substrate 2. Therefore, it can be said that the insulating layer 26 is preferably disposed in a region overlapping with the wiring when viewed in plan. Thereby, since the shortest path between the common electrode 23 and the wiring can be blocked by the insulating layer 26, the parasitic capacitance can be more effectively reduced. Note that the gate bus line 11, the source bus line 12, and the like may be arranged so as to overlap with the end portion of the pixel electrode 14 when viewed in plan, and the storage capacitor wiring and the like are viewed when viewed in plan. In some cases, the pixel electrode 14 may be disposed so as to penetrate the central portion. Further, the pixel electrode 14 is usually arranged on the liquid crystal layer 3 side with respect to the wiring, and constitutes a pixel capacitor together with the common electrode 23. For this reason, it may be said that the portion of the wiring that overlaps the pixel electrode 14 in plan view has substantially no contribution to the parasitic capacitance between the wiring and the common electrode 23. Therefore, from the viewpoint of sufficiently exerting the effect of the present invention that does not affect the pixel capacitance between the pixel electrode 14 and the common electrode 23 and reduces the parasitic capacitance between the wiring and the common electrode 23, the insulating layer 26 is preferably disposed in a region that overlaps a portion of the wiring that does not overlap the pixel electrode 14 in plan view. In other words, it is preferable that the pixel electrode 14 is not disposed in a region where the common electrode 23 overlaps with a portion where the insulating layer 26 of the wiring in a plan view is arranged, and in other words, the insulation of the wiring in a plan view. It is preferable that the pixel electrode 14 is not disposed in the portion where the layer 26 is disposed.

In addition, as shown in FIG. 4A, the insulating layer 26 has a linear shape in plan view in the display region 3 in the vicinity of the approximate center of the BM 20, that is, in the region where the linear protrusion 24 and the linear auxiliary protrusion 25 are not provided. A certain gap is provided from the linear auxiliary protrusion 25 at the end of the pixel. In this embodiment, the width of the BM 20 is 32 μm, the width of the linear auxiliary protrusion 25 is 7.5 μm, the width of the insulating layer 26 arranged in a line is 7.5 μm, the BM 20 and the color filters 21R, 21G, and 21B. The overlap width was set to 7 μm. By adopting such a structure, it is possible to prevent the light transmittance from being lowered due to the excessive alignment regulating force of the linear auxiliary protrusion 25 in the pixel region (pixel opening). That is, the line-shaped insulating layer 26 can be prevented from affecting the alignment of the liquid crystal molecules in the pixel region. In addition, since the insulating layer 26 is provided in the light shielding region inside the light shielding region edge, it is possible to suppress the light transmittance of the pixel opening from being lowered by the insulating layer 26. This configuration is particularly effective when an insulating layer 26 having a light-shielding property and / or a colored insulating layer 26 described later is used.

The insulating layer 26 is disposed in the light shielding region when viewed in plan. Thereby, it can suppress that the light transmittance of a pixel opening part reduces by the insulating layer 26, As a result, deterioration of a display quality can be suppressed. Note that the light shielding area is a dark area at all times regardless of whether the display is on or off. As components of the light shielding region, the BM 20 disposed on the inner side (liquid crystal layer side) of the insulating substrate 10, wiring formed of a light shielding material (in this embodiment, the gate bus line 11 and the gate lead-out wiring 18, A source bus line 12 and a source lead wiring 19 for transmitting a data signal, a storage capacitor wiring, etc.), a light shielding member (for example, a housing) disposed outside the insulating substrate 10 and the like are suitable. Note that the light shielding region may have a configuration in which several components are combined. In addition, from the viewpoint of further reducing the amount of liquid crystal material used while suppressing deterioration in display quality, it is preferable that the insulating layer 26 is disposed in substantially the entire light shielding region when viewed in plan.

In the present embodiment, the insulating layer 26 is disposed in a region overlapping the BM 20 located in the display region 3 and the non-display region 4 when viewed in plan. Thereby, it can suppress that the light transmittance of a pixel opening part reduces by the insulating layer 26, As a result, the deterioration of display quality can be suppressed. As described above, from the viewpoint of suppressing deterioration in display quality, the insulating layer 26 is preferably disposed in a region overlapping the BM 20 located in the display region 3 and / or the non-display region 4 when viewed in plan. . That is, it is preferable that the insulating layer 26 located in the non-display area 4 does not protrude from the display area 3 and is overlapped with the BM 20 when viewed in plan. The insulating layer 26 is preferably disposed outside the BM 20 located in the non-display area 4 when viewed in plan. Note that the BM 20 located in the non-display area 4 is generally arranged in an annular shape so as to surround the display area 3 when viewed in a plan view, and has a substantially band shape. Further, the BM 20 located in the display area 3 is usually arranged in a boundary area between pixels arranged in the display area 3. Therefore, the insulating layer 26 is preferably arranged in a region overlapping with a boundary region between pixels arranged in the display region 3 when viewed in plan, and the insulating layer 26 is displayed in the display region 3 when viewed in plan. It can be said that it is preferable to arrange in a region overlapping with the BM 20 located in the boundary region between the pixels arranged in the.

In addition, the insulating layer 26 is disposed along substantially the entire wiring area of the display area 3 when viewed in a plan view, and is disposed substantially throughout the non-display area 4. More specifically, the insulating layer 26 has a linear shape in the display region 3 and is disposed along substantially the entire area of the wiring when viewed in a plan view, and has a shape in the non-display region 4. It is substantially band-shaped and is arranged in a substantially annular shape surrounding the display area 3. As a result, the parasitic capacitance and the amount of liquid crystal material used can be further reduced.

Further, the counter substrate 2 has an alignment control structure (in the present embodiment, linear protrusions 24 and linear auxiliary protrusions 25) on the liquid crystal layer 8 side. Accordingly, a wide viewing angle can be obtained by using the linear protrusions 24 and the auxiliary auxiliary protrusions 25 in combination with the alignment control structure on the active matrix substrate 1 side (in this embodiment, the electrode slit 15). It becomes. That is, at least one of the active matrix substrate 1 and the counter substrate 2 preferably has the linear protrusions 24 and / or the linear auxiliary protrusions 25 on the liquid crystal layer 8 side of the insulating substrate 10. Note that at least one of the active matrix substrate 1 and the counter substrate 2 usually has a linear protrusion 24 on the liquid crystal layer 8 side of the insulating substrate 10 or the linear protrusion 24 and the liquid crystal layer 8 side of the insulating substrate 10. Although it is a form which has the linear auxiliary | assistant protrusion 25, the latter form is preferable from a viewpoint of improving a display quality. The linear protrusions 24 and the linear auxiliary protrusions 25 are usually formed using an insulating material such as an insulating resin. Therefore, the insulating layer 26 is formed in the same process as the linear protrusion 24 and / or the linear auxiliary protrusion 25 by using the material of the linear protrusion 24 and / or the linear auxiliary protrusion 25 as the material of the insulating layer 26. be able to. That is, since the material, development process, and the like can be shared between the insulating layer 26 and the linear protrusions 24 and / or the linear auxiliary protrusions 25, the insulating layer 26 is provided without particularly complicating the manufacturing process. The obtained liquid crystal display panel 101 can be easily manufactured. Therefore, from such a viewpoint, the insulating layer 26 is disposed on at least one substrate (hereinafter referred to as the counter substrate 2 in the present embodiment) having the linear protrusions 24 and / or the linear auxiliary protrusions 25 and is linear. It is preferable that the same material as that of the protrusion 24 and / or the linear auxiliary protrusion 25 is included. The insulating layer 26 is a layer that is disposed on at least one substrate having the linear protrusions 24 and / or the linear auxiliary protrusions 25 and is made of the same material as the linear protrusions 24 and / or the linear auxiliary protrusions 25. There may be. The insulating layer 26 is usually disposed on at least one substrate having the linear protrusions 24 (hereinafter referred to as the counter substrate 2 in the present embodiment) and includes the same material as the linear protrusions 24. Or arranged on at least one substrate (hereinafter referred to as the counter substrate 2 in this embodiment) having the linear protrusions 24 and the linear auxiliary protrusions 25, and the same as the linear protrusions 24 and / or the linear auxiliary protrusions 25. Although it is the form comprised including a material, as mentioned above, the latter form is preferable from a viewpoint of improving display quality. Further, the linear protrusion 24 and the linear auxiliary protrusion 25 are usually formed in the same process using the same material. Therefore, from the viewpoint of improving display quality without complicating the manufacturing process, the insulating layer 26 is disposed on at least one substrate having the linear protrusions 24 and the linear auxiliary protrusions 25, and the linear protrusions 24 are provided. And the form comprised including the same material as the linear auxiliary protrusion 25 is preferable. As described above, from the viewpoint of easily forming the insulating layer 26 without complicating the manufacturing process, the insulating layer 26 is a substrate that includes the insulating layer 26 (hereinafter referred to as the counter substrate 2 in the present embodiment). It is preferable to include the same material as that member. The insulating layer 26 may be a layer made of the same material as any member constituting the substrate having the insulating layer 26. Therefore, in the present embodiment, the insulating layer 26 may be formed of the same material as the color filter of at least one of the color filters 21R, 21G, and 21B. That is, at least one of the active matrix substrate 1 and the counter substrate 2 has a color filter layer including a plurality of color filters on the liquid crystal layer 8 side of the insulating substrate 10, and the insulating layer 26 is a substrate having a color filter layer (preferably May be configured to include the same material as that of any of the color filters disposed on the counter substrate 2). In this case, the insulating layer 26 may be a layer that is disposed on a substrate having a color filter layer and is made of the same material as any of the color filters.

The insulating layer 26 is disposed on at least one substrate having the linear protrusions 24 and / or the linear auxiliary protrusions 25 and overlaps the linear protrusions 24 and / or the linear auxiliary protrusions 25 when viewed in plan. It must be arranged. Thereby, it is possible to prevent an adverse effect on the alignment regulating force of the linear protrusion 24 and the linear auxiliary protrusion 25. Therefore, the display quality can be prevented from being lowered by the insulating layer 26. In this embodiment, as a matter of course, the insulating layer 26 preferably includes the same material as the linear protrusions 24 and / or the linear auxiliary protrusions 25, and the linear protrusions 24 and / or the linear auxiliary elements are preferably included. It may be a layer made of the same material as the protrusion 25.

FIG. 8 is a schematic cross-sectional view showing the linear auxiliary protrusion and the insulating layer of the first embodiment. FIG. 9 is a schematic cross-sectional view showing a linear auxiliary protrusion and an insulating layer of a comparative form. 8 and 9 show the case where the linear auxiliary protrusions 25 and the insulating layer 26 are formed in the same process using a positive photosensitive material. In this case, their cross-sectional shapes are tapered at the edges. It becomes the shape with. 8 and 9, the linear auxiliary protrusions 25 and the insulating layer 26 are shown in a shape close to the actual shape for the sake of clarity. Thus, when positive photosensitive resin is used as the material of the linear auxiliary protrusions 25 and the insulating layer 26, the height of the linear auxiliary protrusions 25 is higher than the height of the insulating layer 26 as shown in FIG. May be set low. This is because the insulating layer 26 has the same size as the linear protrusions 24 in the pixel region, whereas the linear auxiliary protrusions 25 exhibit an orientation regulating force that controls the occurrence of disclination. This is because the width is originally narrower than the linear protrusion 24 and the height is set lower. In order to produce the linear auxiliary protrusions 25 and the insulating layer 26 having different heights in the same process, the width of the linear auxiliary protrusions 25 may be reduced to the extent that light wraps around during exposure. As a result, the positive type photosensitive material that is originally masked (light-shielded) is also exposed and developed, so that the height of the linear auxiliary projection 25 can be made lower than that of the insulating layer 26. On the other hand, when a gap is not provided between the linear auxiliary protrusion 25 and the insulating layer 26 as shown in FIG. 9, the width of the orientation control structure that functions as an auxiliary rib increases and the height also increases. For this reason, the alignment regulating force of the linear auxiliary protrusions 25 becomes too strong, and the liquid crystal molecules are easily aligned substantially parallel or substantially perpendicular to the polarization axis directions of the polarizing plates 56a and 56b, resulting in a decrease in light transmittance. Resulting in. Therefore, as shown in FIG. 6, the insulating layer 26 is disposed on at least one substrate (the counter substrate 2 in the present embodiment) having the linear auxiliary protrusions 25, and when viewed in plan, the linear auxiliary protrusions 25. More preferably, it is preferably arranged with a space between the auxiliary auxiliary protrusions 25 provided near the end of the pixel region. When the insulating layer 26 is arranged without providing a gap between the linear auxiliary protrusions 25 provided on the pixel edge, the auxiliary ribs are formed by forming the insulating layer 26 from the same material as the linear auxiliary protrusions 25 as described above. As the width of the linear auxiliary projection 25 that should fulfill the function of is increased, the height is also increased. On the other hand, by providing a gap between the insulating layer 26 and the linear auxiliary protrusion 25, it is possible to prevent the alignment restricting force of the linear auxiliary protrusion 25 from becoming stronger than necessary. It can suppress that the fall of a rate generate | occur | produces. Thus, from the viewpoint of suppressing a decrease in light transmittance in the vicinity of the linear auxiliary protrusion 25, the insulating layer 26 is disposed on at least one substrate having the linear auxiliary protrusion 25, and when viewed in plan view, It can be said that it is more preferable that the linear auxiliary projection 25 is arranged with a space between the linear auxiliary projection 25 and more preferably the linear auxiliary projection 25 provided near the end of the pixel region. Further, from the viewpoint of more effectively suppressing a decrease in light transmittance in the vicinity of the linear auxiliary protrusion 25, the insulating layer 26 is disposed on at least one substrate having the linear auxiliary protrusion 25, and the linear auxiliary protrusion 25 25 is a layer made of the same material as that of the line 25, and has a space between the line auxiliary protrusion 25 when viewed further in a plan view, and more preferably the line auxiliary protrusion 25 provided near the end of the pixel region. Are preferably arranged.

The insulating layer 26 has a forward tapered shape when the liquid crystal display panel is viewed in cross section (hereinafter also referred to as “when viewed in cross section”). The linear protrusions 24 and the linear auxiliary protrusions 25 are usually formed from a positive photosensitive resin material, and the cross-sectional shape thereof is a forward tapered shape. Therefore, when the insulating layer 26 has a forward tapered shape, the insulating layer 26 can be easily formed using the same material as the linear protrusions 24 and the linear auxiliary protrusions 25 as described above. In addition, if the cross-sectional shape of the insulating layer 26 is an inversely tapered shape, the coating property of the alignment film is deteriorated, the alignment of the liquid crystal molecules in the vicinity of the tapered portion is disturbed, and the alignment of the liquid crystal molecules in the pixel opening is also affected. May give. However, the application property of the alignment film can be improved by making the cross-sectional shape of the insulating layer 26 a forward tapered shape. As a result, the alignment state of the liquid crystal molecules in the vicinity of the taper portion can be stabilized, and the occurrence of alignment disorder of the liquid crystal molecules can be suppressed.

The insulating layer 26 is disposed in the gap between the color filters 21R, 21G, and 21B when viewed in plan. In addition, the insulating layer 26 is disposed in a boundary region between the pixels arranged in the display region 3 when viewed in plan. Since these areas are usually light-shielding areas (areas where the BM 20 is arranged in this embodiment), it is possible to suppress the light transmittance of the pixel opening from being reduced by the insulating layer 26. That is, it can be said that the insulating layer 26 is preferably disposed in a region overlapping the BM 20 located in the boundary region between the pixels arranged in the display region 3 when viewed in plan.

In addition, at least one of the substrates (the counter substrate 2 in the present embodiment) includes, in order from the insulating substrate 10 side on the liquid crystal layer 8 side of the insulating substrate 10, a BM 20 having an opening, and a plurality of color filters (in the present embodiment). Each color filter 21R, 21G, 21B) has a CF layer 22 disposed in the opening of the BM 20, a common electrode 23 provided on substantially the entire surface of the BM 20 and the CF layer 22, and an insulating layer 26. The layer 26 is disposed in a region overlapping with the BM 20 when viewed in plan. Thereby, since it can suppress that the light transmittance of a pixel opening part reduces, a parasitic capacitance can be reduced, without deteriorating display quality. In addition, since the film thicknesses of the CF layer 22 and the BM 20 are usually different, a step is generated between the CF layer 22 and the BM 20, and the counter substrate 2 is recessed in a region overlapping with the BM 20 when seen in a plan view. (Concave part) will occur. FIG. 10 is a schematic cross-sectional view showing a recessed portion of a conventional counter substrate. In the conventional liquid crystal display panel 701, the counter substrate 2 has a recessed portion (concave portion) 28 generated by a step between the CF layer 22 and the BM 20, as shown in FIG. 10, and an extra liquid crystal material is used. Further, since there is no insulating layer other than the alignment film 17 on the counter substrate 2 side, it is disadvantageous in terms of reducing parasitic capacitance. Furthermore, when the alignment film is applied by a printing method or an ink jet method, the alignment film may not be applied to the recessed portion 28. In addition, dust (foreign matter, cullet (fine glass chips generated when the glass substrate is cut) or the like) accumulates in the indented portion 28, and the cell gap near the dust changes, thereby causing a stain (localized on the display screen). Display unevenness) may occur. On the other hand, FIG. 11 is a schematic cross-sectional view showing a recessed portion of the counter substrate according to the first embodiment. Thus, in this embodiment, as shown in FIG. 11, since the insulating layer 26 is disposed in the recessed portion (recessed portion) 28, the parasitic capacitance can be reduced and the amount of extra liquid crystal material used is effective. Can be reduced. In addition, it is possible to suppress the occurrence of cell thickness defects due to dust accumulated in the recessed portion 28. Furthermore, it is possible to suppress the occurrence of defective application of the alignment film and improve the display quality. As described above, at least one of the substrates (the counter substrate 2 in the present embodiment) includes, in order from the insulating substrate 10 side on the liquid crystal layer 8 side of the insulating substrate 10, the BM 20 having an opening and a plurality of color filters (this embodiment). In the embodiment, each color filter 21R, 21G, 21B) has a CF layer 22 disposed in the opening of the BM 20, and a common electrode 23 provided on substantially the entire surface of the BM 20 and the CF layer 22, and the BM 20 and the color A step due to the filter is formed, and the insulating layer 26 may be disposed on a recess formed by the BM 20 and the end of the color filter. Note that the level difference between the CF layer 22 and the BM 20 tends to increase in recent years.

Here, the background in which the level difference between the CF layer 22 and the BM 20 becomes large will be described. In recent years, liquid crystal display devices have been required to improve quality by improving color purity (color reproduction range improvement), and as a result, the color filter layer tends to be thick. On the other hand, the light shielding layer that shields light between the color filters is usually formed of a negative photosensitive resin (black), and the cross-sectional shape thereof is preferably a forward taper. Therefore, it has been difficult to make the light shielding layer thicker than the present state. This is because if the thickness of the light shielding layer is too large, the black photosensitive resin having a high optical density is not cured by the light exposure near the resin surface, and the uncured resin is side-etched by development. It is. Moreover, if the side etching of the uncured resin proceeds too much, the light shielding layer may be peeled off. For this reason, there is a difference in film thickness between the light shielding layer and the color filter. This causes a problem that a step is generated between the color filter and the light shielding layer (that is, a problem that the upper surface of the substrate having the color filter layer cannot be flattened). As a result, when the liquid crystal display panel is configured, the portion that becomes the depression (concave portion) becomes deep. Therefore, according to the above-described embodiment, it can be said that the color purity (color reproduction range) can be improved while reducing the parasitic capacitance, the amount of liquid crystal material used, and the occurrence of display defects.

FIG. 12 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. As shown in FIG. 12, the CF layer 22 may have a film thickness larger than that of the BM 20, and the insulating layer 26 may have a film thickness larger than the step between the light shielding layer and the color filter. As described above, the color filter layer is arranged such that a plurality of color filters partially overlap with the BM 20, and the insulating layer 26 has a height larger than the height of the convex portion of the color filter overlapping the BM 20. Good. Thereby, the film thickness of the insulating layer 26 in the non-display area 4 can also be increased. Therefore, according to this configuration, the parasitic capacitance can be further reduced, and the volume in the liquid crystal display panel can be further reduced, so that the amount of liquid crystal material used can be further reduced. At this time, the thickness of the insulating layer 26 may be, for example, about 1 to 2 μm. In addition, the insulating layer 26 may have a different film thickness between the display region 3 and the non-display region 4, reducing the amount of liquid crystal material used, reducing parasitic capacitance, and efficiency without adversely affecting the display quality. From the viewpoint of performing the operation, it is preferable to make the film thickness in the non-display area 4 larger than the film thickness in the display area 3.

Next, a connection portion between the source bus line 12 and the source lead wiring 19 will be described. First, a connection portion between a conventional source bus line and a source lead wiring will be described. FIG. 13 is a schematic diagram showing a connection portion between a conventional source bus line and a source lead-out wiring, (a) is a plan view, and (b) is a cross-sectional view taken along line CD in (a). FIG. In the conventional liquid crystal display panel 701, as shown in FIG. 13, the active matrix substrate 1 includes the source lead-out wiring 19 provided in the non-display region 4 on the insulating substrate 10 and the insulating substrate 10 on the insulating substrate 10 side. A gate insulating film 32 provided on substantially the entire surface, a source bus line 12 partially overlapping with an end portion of the source lead wiring 19, a passivation film 13 provided on substantially the entire surface of the insulating substrate 10, and a connection layer 27. It has a laminated structure. Thus, the source lead-out wiring 19 and the source bus line 12 are formed of conductive layers located in different layers when viewed in cross section. As the connection layer 27, a transparent conductive film that is a material of the pixel electrode is preferably used. A contact hole 30 is formed in the gate insulating film 32 and the passivation film 13 so as to overlap the source lead wiring 19 and the source bus line 12, and an opening is formed in a region where the source lead wiring 19 and the source bus line 12 overlap. ing. Then, the connection layer 27 is formed on the passivation film 13 including the contact hole 30, the source lead-out wiring 19, and the source bus line 12, so that the conductive layers (source lead-out) located in different layers when the substrate is viewed in cross section. The wiring 19 and the source bus line 12) are connected. In addition, this makes it possible to use the wiring provided immediately above the insulating substrate 10 as the source lead wiring 19, thereby improving the adhesion between the source lead wiring 19 and the insulating substrate 10. The reliability of the liquid crystal display panel 101 can be improved. However, in the connection part of the wiring configured to include such different conductive layers, conductive layers of different layers are stacked, or a connection layer 27 that mediates connection is further superimposed on the conductive layers of different layers. Therefore, there is a portion that is raised compared to other wiring portions. Further, as shown in FIG. 13B, conventionally, a connection layer that mediates connection may be exposed on the upper layer. Therefore, the parasitic capacitance increases between the common electrode 23 provided on the counter substrate 2 side and the connection layer 27 that mediates the connection, or between the active matrix substrate 1 and the counter substrate 2 due to the conductive foreign material 35. In some cases, a short circuit may occur. In addition, even when the conductive foreign material 35 is not present, the panel is deflected by the pressing force, and a short circuit occurs due to the direct contact between the electrodes (the connection layer 27 and the common electrode 23) of the active matrix substrate 1 and the counter substrate 2. There was something to do.

Next, a connection portion between the source bus line and the source lead wiring in the present embodiment will be described. FIG. 14 is a schematic diagram illustrating a connection portion between the source bus line and the source lead-out wiring according to the first embodiment, (a) is a plan view, and (b) is an EF line in (a). FIG. FIG. 15 is another schematic diagram illustrating a connection portion between the source bus line and the source lead-out wiring according to the first embodiment, (a) is a plan view, and (b) is a G- It is sectional drawing in H line. As shown in FIGS. 14 and 15, the active matrix substrate 1 and / or the counter substrate 2 of this embodiment includes an insulating layer 26 disposed in a region where wirings of different layers are electrically connected. That is, the wiring has an interlayer connection portion 46 in which conductive layers located in different layers when viewed in cross section are electrically connected through the contact holes 30, and the insulating layer 26 has an interlayer connection when viewed in plan. It is arranged in a region overlapping with the connecting portion 46. Thereby, the occurrence of a short circuit between the active matrix substrate 1 and the counter substrate 2 can be reduced. In addition, a region where wirings of different layers are electrically connected usually includes a raised portion of the wiring (a portion close to the common electrode of the wiring). Therefore, by providing an insulating layer in this region, parasitic capacitance is reduced. It can reduce more effectively. Therefore, it can be said that the insulating layer 26 is preferably disposed in a region where the wiring is raised. As the raised area of the wiring, in addition to the interlayer connection portion in which the conductive layers of the different layers described above are electrically connected through the contact holes, a region where the wirings cross each other, a region extended to the switching element, and the like are preferable. It is. In the present embodiment, the wiring includes a conductive layer that electrically connects the wiring and the wiring, for example, a connection electrode such as a connection layer 27 that electrically connects different conductive layers.

The insulating layer 26 may be disposed on the active matrix substrate 1 as shown in FIG. 14B, may be disposed on the counter substrate 2 as shown in FIG. 15B, or may be disposed on the active matrix substrate. 1 and the counter substrate 2 may be disposed. The material of the insulating layer 26 is not particularly limited, but when the insulating layer 26 is provided on the active matrix substrate 1, the material of the columnar spacer provided on the active matrix substrate 1 is suitable. That is, the liquid crystal display panel 101 preferably includes columnar spacers between the substrates, and the insulating layer 26 includes the same material as the columnar spacers. Further, as described in the fifth embodiment, when the active matrix substrate 1 has linear protrusions and / or linear auxiliary protrusions, the material of the linear protrusions and / or linear auxiliary protrusions is also suitable. On the other hand, when the insulating layer 26 is provided on the counter substrate 2, the material of the linear protrusion 24 and / or the linear auxiliary protrusion 25 and the material of the color filter constituting the CF layer 22 are suitable. Therefore, if the process originally uses the material of the linear protrusion and / or the linear auxiliary protrusion or the material of the columnar spacer, the above structure can be easily realized without increasing the number of steps. The columnar spacer is a columnar spacer (may be wall-shaped) arranged in a predetermined region (usually a light-shielding region) of the active matrix substrate 1 and / or the counter substrate 2, and is usually a photosensitive resin. Is formed by a photolithography process. Therefore, the columnar spacer is also called a photo spacer. In addition, the active matrix substrate 1 of the present embodiment has a structure in which the source lead-out wiring 19 and the source bus line 12 are in direct contact with each other through the contact hole 30 without providing the connection layer 27 so as to be electrically connected. There may be.
Below, the other suitable form and deformation | transformation form in this embodiment are demonstrated.

16 and 17 are schematic cross-sectional views illustrating other configurations of the corners of the liquid crystal display panel according to the first embodiment. From the standpoint of enabling further reduction of parasitic capacitance and liquid crystal usage, the insulating layer 26 has a width equal to or larger than the width of the source bus line 12 as shown in FIGS. It is preferable that the concave portion (recessed portion) generated by the step between 22 and the BM 20 is substantially completely filled.

However, in this embodiment, as long as the insulating layer 26 is provided at a position corresponding to the wiring in a region other than the region where the linear protrusion 24 and the linear auxiliary protrusion 25 are provided, each wiring and the common electrode are provided. A certain effect of reducing the parasitic capacitance value between 23 and 23 is obtained. In addition, since the space for storing the liquid crystal material is reduced as compared with the conventional case, a certain effect of reducing the amount of the liquid crystal material used can be obtained.

FIG. 18A is a schematic plan view showing the liquid crystal display panel of Embodiment 1, and FIG. 18B is an enlarged schematic plan view of a region surrounded by a circle in FIG. The liquid crystal display panel 101 has a sealing material 9 between the substrates in the non-display area 4, and the insulating layer 26 seals the opposing substrates when viewed in plan, as shown in FIG. It is preferable that the seal (sealing material) 9 does not overlap. Thereby, the fall of the adhesion strength of the seal | sticker 9 and the opposing board | substrate 2 can be prevented. In this embodiment, as shown in FIG. 18B, the width W1 of the seal 9 is 2700 μm, the width W2 of the BM 20 in the non-display area 4 is 6300 μm, and the gap W3 between the seal 9 and the BM 20 Is 30 μm, and the width W4 from the end of the insulating layer 26 to the end of the BM 20 is 100 μm. FIG. 19 is a schematic cross-sectional view showing an end portion of the liquid crystal display panel of Embodiment 1, (a) is a cross-sectional view taken along line J-K in FIG. 18 (a), and (b) and FIG. (C) is a modification of FIG. From the viewpoint of placing importance on the adhesion between the seal 9 and the counter substrate 2, the seal 9 is preferably disposed so as not to overlap the BM 20 and the insulating layer 26 as shown in FIG. When it is desired to secure a certain degree of adhesion while further reducing the amount of liquid crystal material used, the seal 9 overlaps with a part (end part) of the BM 20 as shown in FIG. It may be arranged so as not to overlap. When it is desired to further reduce the amount of liquid crystal material used, the seal 9 may be disposed so as to overlap with a part (end part) of the BM 20 and the insulating layer 26 as shown in FIG. 19 (b) and 19 (c), if the width W1 of the seal 9 is about 0.8 to 2.0 mm, the width of the portion of the seal 9 that does not overlap with the BM 20 or the insulating layer 26. Is preferably about half of the width W 1 of the seal 9, whereby sufficient adhesion between the seal 9 and the counter substrate 2 can be secured.

FIG. 20 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. In this figure, the BM and CF layers are not shown. As shown in FIG. 20, the insulating layer 26 may be formed in a line shape in the display region 3 and thinned at a constant interval. That is, the insulating layer 26 may have the slits 31 in the display region 3 when viewed in plan. When the insulating layer 26 is provided in a line shape, the line-shaped insulating layer 26 may become a barrier against the flow of liquid crystal when the liquid crystal is sealed in the manufacturing process of the liquid crystal display panel 101. As a result, in this case, residual bubbles (vacuum bubbles, space in which no liquid crystal exists) are generated in the liquid crystal display panel 101. In addition, the time required for liquid crystal encapsulation becomes longer. Therefore, by providing the slit 31 in the insulating layer 26, it is possible to prevent the growth of the liquid crystal from being inhibited, and the flow of the liquid crystal becomes smooth. Therefore, the generation of residual bubbles can be reduced, and the liquid crystal injection time can be shortened.

FIG. 21 is a schematic plan view illustrating another configuration of the corner of the liquid crystal display panel of Embodiment 1. In this figure, the BM and CF layers are not shown. The insulating layer 26 may have a slit 31 in the non-display area 4 as shown in FIG. As a result, as in the case of the display region 3, the generation of residual bubbles can be reduced and the injection time of the liquid crystal material can be shortened. Further, when the BM 20 made of resin and the insulating layer 26 made of resin are formed so as to overlap each other, gas may be emitted from each resin material or interlayer, and bubbles may be generated in the liquid crystal layer 8. However, by providing the slit 31 in the insulating layer 26, the amount of resin material used and the area of each layer in contact with the insulating layer 26 can be reduced, so that generation of gas can be reduced.

Further, as shown in FIG. 21, the slit 31 may be disposed in a region that does not overlap with the wiring in the non-display region 4 when viewed in plan. Thereby, generation | occurrence | production of a bubble can be suppressed, reducing the parasitic capacitance of wiring.

Furthermore, the slit 31 may be arranged along the direction in which the liquid crystal flows in the step of injecting or dropping the liquid crystal when viewed in plan. Thereby, since the flow of the liquid crystal becomes smoother, the injection time of the liquid crystal material can be further shortened. More specifically, the direction in which the liquid crystal flows in the step of dropping the liquid crystal includes the radiation direction with respect to the nearest liquid crystal dropping point. More specifically, the flow direction of the liquid crystal in the step of injecting the liquid crystal is, more specifically, when the liquid crystal is injected by using a vacuum injection method, when the liquid crystal is injected in a plan view, A substantially perpendicular direction is mentioned with respect to the end (side). The injection port is an opening provided in the seal 9 for injecting liquid crystal.

FIG. 22 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. In this figure, the BM and CF layers are not shown. As shown in FIG. 22, the slit 31 may be arranged in a direction substantially parallel to the contour line of the display region 3 when viewed in plan. Thereby, even when a bubble is generated in the non-display area 4, it is possible to suppress the movement of the bubble to the display area 3. It should be noted that the slits are preferably arranged in a plurality of rows in a direction substantially parallel to the contour line of the display area 3 from the viewpoint of more effectively suppressing the movement of bubbles to the display area. In this embodiment, the slit 31 is generally formed in a substantially square shape when viewed in plan.

FIG. 23 is a schematic plan view illustrating another configuration of the corner of the liquid crystal display panel of Embodiment 1. In this figure, the BM and CF layers are not shown. As shown in FIG. 23, the slit 31 may have a form in which the forms shown in FIGS. 21 and 22 are combined.

FIG. 24 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. In this figure, the BM and CF layers are not shown. As shown in FIG. 24, the insulating layer 26 may not be disposed at a position corresponding to the gate bus line 11, and conversely, it may not be disposed at a position corresponding to the source bus line 12.

25 and 26 are schematic plan views showing other configurations of the corners of the liquid crystal display panel of Embodiment 1. FIG. In this figure, the BM and CF layers are not shown. As shown in FIGS. 25 and 26, the insulating layer 26 may be disposed at a position corresponding to the wiring of only the display area 3 or only the non-display area 4. In the form in which the insulating layer 26 is disposed only in the non-display area 4, the insulating layer 26 is preferably disposed without protruding from the display area 3. That is, the insulating layer 26 is preferably disposed outside the display region 3 when viewed in plan.

Here, the relative dielectric constant of the insulating layer 26 will be described. First, the average relative dielectric constant of a general vertical alignment liquid crystal (nematic liquid crystal having negative dielectric anisotropy) is about 6.0. The average relative dielectric constant is an average value of the relative dielectric constant (ε _|| ) for an electric field parallel to the director and the relative dielectric constant ( _ε⊥ ) for an electric field perpendicular to the director. On the other hand, the relative dielectric constant of the novolac resin typically used as the material of the linear protrusions 24 and the linear auxiliary protrusions 25 is about 3.5 to 4.0. Therefore, if the same material as that of the linear protrusions 24 and the linear auxiliary protrusions 25 is disposed at the location where the liquid crystal was present, the parasitic capacitance between the wiring and the common electrode 23 is reliably reduced. From such a viewpoint, the insulating layer 26 preferably has a relative dielectric constant smaller than the average relative dielectric constant of the liquid crystal material included in the liquid crystal layer 8, and more specifically, preferably 6 or less. More preferably, it is 4 or less. In addition, when other materials such as an acrylic resin, a polyimide resin, and an epoxy resin are used, the dielectric constant of the insulating layer 26 can be set to about 4.5. The dielectric constant of the insulating layer 26 is about 3 to 5 when a urethane resin is used, about 3 when a polyester resin is used, about 2 to 3 when a polyolefin resin is used, and SOG (spin-on-glass). When the material is used, it can be about 3.5. Furthermore, since the parasitic capacitance can be further reduced by increasing the thickness of a material having a low dielectric constant, the above materials are preferable from the viewpoint of easily increasing the thickness. Note that the SOG material is a material that can form a glass film (silica film) by a coating method such as a spin coating method. As the SOG material, for example, an SOG material containing an organic component, that is, a so-called organic SOG material is preferable. As the organic SOG material, in particular, an organic SOG material having a Si—O—C bond as a skeleton or an organic SOG material having a Si—C bond as a skeleton can be preferably used.

As described above, the insulating layer 26 preferably contains an organic material and / or a spin-on-glass (SOG) material. Thereby, it is easy to increase the thickness of the insulating layer 26 on the order of microns, and the relative dielectric constant of the insulating layer 26 can be made smaller than the average relative dielectric constant of the liquid crystal material included in the liquid crystal layer 8. The insulating layer 26 may be formed from an organic material and / or an SOG material.

As the organic substance, a resin is preferable, and more specifically, for example, an acrylic resin, a novolac resin, and the like are preferable. That is, the insulating layer 26 preferably contains an acrylic resin, and preferably contains a novolac resin. The insulating layer 26 may be formed from an acrylic resin, or may be formed from a novolac resin. The CF layer 22 and the BM 20 are usually formed from a negative photosensitive resin in which a pigment is dispersed in an acrylic resin. The columnar spacers are also usually formed from a negative photosensitive acrylic resin. Accordingly, by using an acrylic photosensitive resin as the material of the insulating layer 26, the developer for the CF layer 22, BM 20, columnar spacers, etc., and the insulating layer 26 can be shared. Therefore, it is not necessary to prepare a separate development system for the insulating layer 26, and the cost can be reduced by making the manufacturing process and apparatus common. In addition, a novolac photosensitive resin is generally used as a photoresist material used for patterning or the like when the color filters 21R, 21G, and 21B are formed of a non-photosensitive resin. Further, as a material of the linear protrusion 24 and the auxiliary protrusion 25, a novolac photosensitive resin is generally used. Therefore, when the color filters 21R, 21G, and 21B are patterned using a photoresist, the cost can be reduced by using a common manufacturing process and apparatus as in the case of using an acrylic resin.

The organic substance is not particularly limited to the above acrylic resin and novolac resin, and photosensitive or non-photosensitive resin such as epoxy resin, urethane resin, polyester resin, polyimide resin, and polyolefin resin may be used. That is, the insulating layer 26 may contain at least one resin selected from the group consisting of an epoxy resin, a urethane resin, a polyester resin, a polyimide resin, and a polyolefin resin, and includes an epoxy resin, a urethane resin, a polyester resin, a polyimide resin, and It may be formed from at least one resin selected from the group consisting of polyolefin resins. Since these resins can also be used as materials for the CF layer 22, the BM 20, and the columnar spacers, the same effects as those described above can be obtained.

In the present specification, “novolak resin” includes novolac or a compound similar to novolac, and the above-mentioned other resins also include similar compounds. Further, as the material of the linear protrusions 24 and the linear auxiliary protrusions 25, the above-mentioned materials are suitable as in the insulating layer 26.

FIG. 27 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. The insulating layer 26 is preferably colored as shown in FIG. That is, the insulating layer 26 preferably has a light shielding property, and is preferably formed of, for example, a light shielding material or a coloring material. In this specification, more specifically, “having light shielding properties” means that the optical density OD value is preferably 3.0 or more, and more preferably 4.0 or more. However, the optical density OD value of the insulating layer 26 is not limited to the above, and the OD value of the insulating layer 26 may be about 1.0, for example. In such a case, it is sufficient that the OD value of the BM 20 is sufficiently large, and the insulating layer 26 can function as an auxiliary light shielding member. In addition, a material having a small OD value has an advantage that the pigment concentration is low and patterning by a photolithography method is relatively easy. Therefore, when the insulating layer 26 is made of the same material as the material of the linear protrusion 24 and the linear auxiliary protrusion 25, the linear protrusion 24 and the linear auxiliary protrusion 25 can be easily formed in a desired shape. The light shielding property may be a property that blocks light transmission, and may be a property that absorbs light. Therefore, the insulating layer 26 may have a light absorption property. As a material of the insulating layer 26 having a light shielding property, for example, the resin itself may be a material having a low light transmittance, and as a material of the colored insulating layer 26, for example, a colorant such as a pigment or a dye is mixed. Resin may be used. From the viewpoint of reliability, a pigment is preferable as the colorant, and a carbon black pigment is preferable as the pigment having excellent light shielding properties. The pigment used for the insulating layer 26 may be a mixture of at least two pigments of red, blue and green. Further, by using the red and blue pigments alone or in combination (mixing) of the red and blue pigments, the insulating layer 26 may be colored and have a certain degree of light absorption. it can. As the color pigment, for example, the following materials can be used. That is, examples of the red pigment include azo, quinacridone, anthraquinone, anthraquinone, perylene, and perinone red pigments, or combinations of these red pigments. Examples of the green pigment include a combination of phthalocinine green and a yellow pigment. Examples of the blue pigment include a combination of a phthalocyanine blue pigment and a violet pigment. By coloring the insulating layer 26 in this way, the light shielding property of the light shielding region can be improved. Therefore, this form is suitable for the case where it is desired to reduce the film thickness of the BM 20 made of a photosensitive resin material and improve its taper controllability. This is because even if the film thickness of the BM 20 is reduced, the colored insulating layer 26 can compensate for the reduced light shielding property of the BM 20. As described above, the form in which the insulating layer 26 has a light-shielding property and the form in which the insulating layer 26 is colored include a form in which the insulating layer 26 is disposed in the light-shielding region when viewed in plan, and a form when viewed in plan. It is preferable that the insulating layer 26 is appropriately combined with the form in which the insulating layer 26 is disposed so as to overlap the BM 20. In the form in which the insulating layer 26 is colored, the insulating layer 26 is preferably formed using the same material as the linear protrusions 24 and / or the linear auxiliary protrusions 25 in the pixel region. The linear protrusions 24 and / or the linear auxiliary protrusions 25 are also colored in the same manner as the insulating layer 26. Therefore, light is emitted from the region where the linear protrusions 24 and / or the linear auxiliary protrusions 25 are arranged during black display. The occurrence of leakage can be suppressed. Therefore, since the black luminance (the luminance at the time of black display) can be reduced, the contrast can be improved. FIG. 28 is a schematic cross-sectional view showing another configuration of the liquid crystal display panel of Embodiment 1. In the form in which the insulating layer 26 is colored, as shown in FIG. 28, a form without BM may be used. Thereby, not only the insulating layer 26 also serves as a BM, but also the distance between the counter electrode 23 and the wiring (source bus line 12) can be increased, so that the parasitic capacitance can be further reduced. As described above, at least one of the active matrix substrate 1 and the counter substrate 2 has a CF layer 22 in which a plurality of color filters are arranged in the order from the insulating substrate 10 side on the liquid crystal layer 8 side of the insulating substrate 10. (In this embodiment, each color filter 21R, 21G, 21B), a common electrode 23 provided on substantially the entire surface of the insulating substrate 10 and the CF layer 22, and an insulating layer 26. It may have a light shielding property and may be disposed in the gap of the color filter when the substrate is viewed in plan.

The insulating layer 26 is preferably disposed in a region that does not affect the alignment of liquid crystal molecules in the pixel region when viewed in plan. The insulating layer 26 is more preferably disposed in a region that is a light-shielding region and does not affect the alignment of liquid crystal molecules in the pixel region when viewed in plan. The insulating layer 26 provided on the counter electrode 23 usually has the property of affecting the alignment direction of the liquid crystal by the effect of its shape and the effect of changing the electric field, like the linear protrusion 24 and the linear auxiliary protrusion 25. Have. Therefore, depending on the place where the insulating layer 26 is disposed, it may cause a decrease in light transmittance in the pixel opening and a residual image in the display image. Therefore, by disposing the insulating layer 26 in a region that does not affect the alignment of the liquid crystal molecules in the pixel region, it is possible to suppress a decrease in light transmittance and generation of an afterimage. FIG. 29 is a schematic cross-sectional view illustrating the configuration of the liquid crystal display panel of the first embodiment. The region that does not affect the alignment of the liquid crystal molecules in the pixel region is not particularly limited. More specifically, as shown in FIG. 29, the insulating layer 26 includes an edge (edge) of the insulating layer 26 and a pixel electrode. Preferably, the 14 edges are spaced apart. That is, one of the substrates (the counter substrate 2 in this embodiment) has the pixel electrode 14 on the liquid crystal layer 8 side of the insulating substrate 10, and the insulating layer 26 is in a region that does not overlap with the pixel electrode 14 in plan view. It is preferable to arrange. The distance L between the edge of the pixel electrode 14 and the edge of the insulating layer 26 is preferably 2 μm or more, more preferably 5 μm or more, and considering the deviation at the time of substrate bonding, the distance L is 7 μm or more. More preferably. By providing an interval between the edge of the pixel electrode 14 and the edge of the insulating layer 26 of 7 μm or more, it is possible to reliably prevent the alignment disorder of the liquid crystal on the pixel electrode 14. FIG. 30 is a schematic plan view illustrating the configuration of the pixel according to the first embodiment. As a specific place where the edge of the pixel electrode 14 and the edge of the insulating layer 26 are arranged apart from each other, an area indicated by a circle in FIG. 30, that is, an end portion of the pixel when the substrate is viewed in plan view. The end of the pixel electrode 14 where the linear auxiliary protrusions 25 do not overlap is suitable.

Below, the liquid crystal display panel of Embodiment 1, the liquid crystal display element provided with the liquid crystal display panel, and the manufacturing method of the liquid crystal display device provided with the liquid crystal display element are demonstrated.

First, a method for manufacturing an active matrix substrate will be described. On a transparent insulating substrate made of glass or the like, a metal film made of a Ti / Al / Ti laminated film or the like is formed by sputtering in order to form a scanning line (gate wiring, gate bus line) and a storage capacitor wiring. Then, a resist pattern is formed by photolithography, and dry etching is performed using an etching gas such as a chlorine-based gas, and the resist is peeled off. Thereby, the scanning signal line (gate wiring, gate bus line) and the storage capacitor wiring are simultaneously formed on the transparent substrate.

Thereafter, a gate insulating film made of silicon nitride (SiNx) or the like, an active semiconductor layer made of amorphous silicon or the like, and a low resistance semiconductor layer made of amorphous silicon or the like doped with phosphorus or the like are formed by CVD. Then, in order to form data signal lines (source wiring, source bus line) and drain lead wiring, a metal film made of an Al / Ti laminated film or the like is formed by sputtering, and a resist pattern is formed by photolithography. Then, dry etching is performed using an etching gas such as a chlorine-based gas to remove the resist. As a result, the data signal line and the drain lead line are formed simultaneously.

The auxiliary capacitance is formed between the auxiliary capacitance wiring and the pixel electrode described later with a gate insulating film having a thickness of about 0.4 μm and an interlayer insulating film having a thickness of about 0.3 μm described later interposed therebetween. . Thereafter, in order to separate the source electrode and the drain electrode, the low resistance semiconductor layer is dry-etched using chlorine gas or the like to form a TFT element.

Next, an interlayer insulating film made of silicon nitride (SiNx) or the like is formed by CVD, a resist pattern is formed by photolithography, and dry etching is performed using an etching gas such as a fluorine-based gas, and the resist is removed. Thus, a contact hole for electrically contacting the drain lead wiring and the pixel electrode is formed.

Next, a pixel electrode and a vertical alignment film are formed in this order. The liquid crystal display device formed in the present embodiment is an MVA mode liquid crystal display device as described above, and an electrode slit is provided in a pixel electrode made of ITO or the like. This structure can be obtained by first forming a metal film made of ITO by sputtering, forming a resist pattern by photolithography, and further etching with an etching solution such as ferric chloride. Thus, an active matrix substrate can be obtained.

Then, the manufacturing method of a counter substrate is demonstrated. The counter substrate manufactured in this embodiment includes a color filter layer composed of color filters of three primary colors (red, green, and blue) on a transparent substrate, a light shielding layer that is a black matrix (BM), a common electrode, And a vertical alignment film, and linear protrusions and linear auxiliary protrusions for alignment control. Thus, the counter substrate manufactured in the present embodiment is a color filter substrate.

First, on a transparent insulating substrate made of glass or the like, a negative acrylic photosensitive resin liquid in which carbon fine particles are dispersed is applied by spin coating, followed by drying to form a black photosensitive resin layer. Subsequently, the black photosensitive resin layer is exposed through a photomask and developed to form a black matrix (BM). At this time, the BM is provided with an opening on the transparent substrate for forming each color filter (for example, the first color filter is a red layer, the second color filter is a green layer, and the third color filter is a blue layer). In addition, patterning is performed so that the opening corresponds to each pixel electrode.

Next, a negative acrylic photosensitive resin liquid in which pigment is dispersed by spin coating is applied, dried, and further exposed and developed using a photomask to form a first color filter (red layer). To do. Thereafter, the second color filter (green layer) and the third color filter (blue layer) are formed in the same manner to complete the color filter layer. Subsequently, a common electrode made of a transparent electrode such as ITO is formed by sputtering, and then, for example, a positive type phenol novolac photosensitive resin liquid is applied by spin coating, followed by drying, exposure using a photomask and By performing development, linear protrusions and linear auxiliary protrusions, which are alignment control structures, and an insulating layer are formed. Further, after applying a negative acrylic photosensitive resin solution by spin coating, drying is performed, and exposure and development are performed using a photomask to form columnar spacers on the BM. Thus, the counter substrate is formed. In the present embodiment, the case of a BM made of resin is shown, but a BM made of metal may be used. The three primary color filters are not limited to the three colors of red, green, and blue, and may include color filters such as cyan, magenta, and yellow, and may include white. Furthermore, in this embodiment, the thickness of the BM is 1.4 μm, the thickness of each color filter is 2.0 μm, the thickness of the linear protrusion is 1.2 μm, and the thickness of the linear auxiliary protrusion is 0. 0.8 μm, and the film thickness of the insulating layer was 1.2 μm.

Next, a method for manufacturing a liquid crystal display panel using the counter substrate and the active matrix substrate manufactured as described above will be described.

First, a vertical alignment film is formed by an inkjet method on the surface of the active matrix substrate and the counter substrate that are in contact with the liquid crystal. Specifically, alignment film baking is performed after substrate cleaning and alignment film application. The vertical alignment film thus formed defines the alignment direction of the liquid crystal in the direction perpendicular to the substrate.

Next, a method for sealing liquid crystal between the active matrix substrate and the counter substrate will be described. As for the liquid crystal sealing method, for example, an injection port for injecting liquid crystal is provided in the periphery of the substrate with a thermosetting sealing resin, the liquid injection is performed by immersing the injection port in liquid crystal in a vacuum and opening it to the atmosphere. There is a vacuum injection method in which the injection port is sealed with a UV curable resin or the like. However, since the vertical alignment type liquid crystal panel has a drawback that the injection time is much longer than that of the horizontal alignment panel, a more preferable liquid crystal dropping method will be described here.

In this method, first, a UV curable sealing resin containing a spacer such as fiber glass is applied around the active matrix substrate side, and liquid crystal is dropped on the opposite substrate side by a dropping method. An optimal amount of liquid crystal can be regularly dropped on the inner part of the seal by the liquid crystal dropping method. This dropping amount is determined by the cell gap value and the volume value in which the liquid crystal is to be filled in the cell. Subsequently, in order to bond the counter substrate and the active matrix substrate on which the seal drawing and liquid crystal dropping are performed as described above, the atmosphere in the bonding apparatus is reduced to 1 Pa, and the substrates are bonded under this reduced pressure. . Thus, the seal portion is crushed by setting the atmosphere to atmospheric pressure.

Next, UV irradiation is performed with a UV curing device to temporarily cure the seal resin. Then, baking is performed to finally cure the sealing resin. At this time, the liquid crystal spreads inside the sealing resin and the liquid crystal is filled in the cell. And when the some panel pattern is arrange | positioned on the board | substrate, it divides | segments per panel. A liquid crystal display panel is completed through the above steps.

After cleaning the panel, a polarizing plate is attached to both sides of the liquid crystal display panel. In addition, you may laminate | stack an optical compensation sheet etc. on a polarizing plate as needed.

Next, the source driver and the gate driver are connected. Here, a method of connecting a driver by a TCP (Tape Carrier Package) method will be described. First, an ACF (Anisotropic Conductive Film) is temporarily bonded to each of the source terminal portion and the gate terminal portion of the liquid crystal display panel, and then the source TCP and gate TCP on which the driver is mounted are punched from the carrier tape and aligned with the panel terminal electrode. Then, heat and final pressure bonding. Subsequently, a printed wiring board for connecting the driver TCP and the input terminal of the TCP are connected by ACF. In this way, a liquid crystal display element is obtained.

And a display control circuit is connected to the driver of a liquid crystal display element, and a liquid crystal display device is obtained by integrating with the illuminating device called a backlight light source.

Next, an example in which the liquid crystal display device thus obtained is used for a television receiver will be described. FIG. 31 is a block diagram illustrating a configuration of a display device for a television receiver. The display device 300 includes a Y / C separation circuit 60, a video chroma circuit 61, an A / D converter 62, a liquid crystal controller 63, a liquid crystal display element 200, a backlight drive circuit 64, a backlight 65, A microcomputer 66 and a gradation circuit 67 are provided.

In the display device 300 having such a configuration, first, a composite color video signal Scv as a television signal is input from the outside to the Y / C separation circuit 60, where it is separated into a luminance signal and a color signal. These luminance signals and color signals are converted into analog RGB signals corresponding to the three primary colors of light by the video chroma circuit 61, and the analog RGB signals are further converted into digital RGB signals by the A / D converter 62. . This digital RGB signal is input to the liquid crystal controller 63. The Y / C separation circuit 60 also extracts horizontal and vertical synchronization signals from the composite color video signal Scv input from the outside, and these synchronization signals are also input to the liquid crystal controller 63 via the microcomputer 66.

A digital RGB signal is input to the liquid crystal display element 200 from the liquid crystal controller 63 at a predetermined timing together with a timing signal based on the synchronization signal. The gradation circuit 67 generates gradation voltages for the three primary colors R, G, and B for color display, and these gradation voltages are also supplied to the liquid crystal display element 200. In the liquid crystal display element 200, driving signals (data signals, scanning signals, etc.) are generated by internal source drivers, gate drivers, and the like based on these RGB signals, timing signals, and gradation voltages, and based on these driving signals. A color image is displayed on the internal display. In order to display an image with the liquid crystal display element 200, it is necessary to irradiate light from behind the liquid crystal display element 200. In the display device 300, the backlight drive circuit 64 is controlled under the control of the microcomputer 66. Driving the light 65 irradiates the back surface of the liquid crystal display panel 101 with light.

The microcomputer 66 controls the entire system including these processes. The video signal (composite color video signal) input from the outside includes not only a video signal based on television broadcasting but also a video signal captured by a camera, a video signal supplied via an Internet line, and the like. The display device 300 can display images based on various video signals.

FIG. 32 is a block diagram illustrating a connection relationship between a tuner unit 70 and a display device included in the television receiver. When an image based on television broadcasting is displayed on the display device 300 having such a configuration, a tuner unit 70 is connected to the display device 300 as shown in FIG. The tuner unit 70 extracts a signal of a channel to be received from the received wave (high frequency signal) received by the antenna, converts the signal to an intermediate frequency signal, and detects the intermediate frequency signal to detect a composite as a television signal. The color video signal Sc is taken out. The composite color video signal Scv is input to the display device 300 as described above, and an image based on the composite color video signal Scv is displayed by the display device 300.

FIG. 33 is an exploded perspective schematic view showing an example of a mechanical configuration when the display device is a television receiver. In the example illustrated in FIG. 33, the television receiver includes a first housing 81 and a second housing 82 in addition to the display device 300 as its components, and the display device 300 is included in the first housing 81. And the second casing 82 so as to be sandwiched. The first housing 81 is formed with an opening 83 through which an image displayed on the display device 300 is transmitted. The second casing 82 covers the back side of the display device 300, is provided with an operation circuit 84 for operating the display device 300, and a support member 85 is attached below.

<Embodiment 2>
The liquid crystal display device of Embodiment 2 will be described. It should be noted that the description and illustration of the contents overlapping between the present embodiment and the first embodiment are omitted.

FIG. 34 is a schematic plan view showing the configuration of the liquid crystal display panel of the second embodiment. FIG. 35 is an enlarged schematic plan view showing the configuration of the corners of the liquid crystal display panel of the second embodiment. In the liquid crystal display panel 102 of the present embodiment, one pixel 6 is composed of two subpixels 7a and 7a. In FIG. 34, pixels corresponding to four pixels before being divided, that is, eight subpixels. Pixels are shown. In the present embodiment, the number of divisions for one pixel is two, but the number of divisions for pixels is not particularly limited, and may be two or more. In this embodiment, source bus lines 12 and gate bus lines 11 corresponding to pixels are arranged in a matrix direction, and TFTs 16 a and 16 b as switching elements are connected to one gate bus line 11 near the cross portion of each wiring. Two are arranged. In addition, electrode slits 15 are formed as openings of the subpixel electrodes 34a and 34b so as to have an angle of approximately 45 ° with respect to the edges of the subpixel electrodes 34a and 34b. The sub-pixel electrodes 34a and 34b are configured such that all the regions are electrically connected via connection portions where the electrode slits 15 are not formed. Note that contact holes 30a and 30b for electrically connecting the drain electrode and the sub-pixel electrodes 34a and 34b are formed corresponding to the TFTs 16a and 16b, respectively. As described above, when the TFTs 16a and 16b are arranged in the sub-pixels 7a and 7b, respectively, and one pixel is two pixels, it is assumed that a pixel defect due to TFT failure or leakage of upper and lower electrodes (pixel electrode and common electrode) occurs. However, since the drive pixel is a sub-pixel unit having a size smaller than that of the normal pixel, the defect can be made inconspicuous. Further, at this time, the so-called multi-pixel driving in which the voltages applied to the sub-pixels 7a and 7b are made different can suppress gradation shift due to the viewing angle. By forming subpixels in this manner, display characteristics such as viewing angle, transmittance, response speed, and contrast ratio can be adjusted in a balanced manner, and a more efficient pixel structure can be obtained.

The pixel of the liquid crystal display panel of this embodiment is an example of a pixel that can realize the Cs multi-pixel driving method. Further, the Cs multi-pixel driving method varies the voltage applied to the storage capacitor wiring during the non-selection period after the TFT of the target pixel is turned on and selected, and then the TFT is turned off. Multi-pixel driving is realized by changing the potential of the pixel electrode.

In the present embodiment, the insulating layer 26 is disposed at the corner of the pixel and / or sub-pixel that hardly contributes to the light transmittance of the pixel opening. Thus, in the liquid crystal mode having the alignment control structure such as the MVA mode, the corner of the pixel (sub-pixel) may become a dead space. Therefore, when viewed in plan, the insulating layer 26 is disposed at the corner of the pixel, so that the region where the insulating layer 26 is disposed can be increased without reducing the light transmittance of the pixel opening. As a result, the amount of liquid crystal material used can be further reduced. Note that in this specification, the corner of a pixel includes a corner of a sub-pixel and a corner of a sub-pixel.

Further, the insulating layer 26 may be formed integrally with the linear protrusions 24 arranged at the corners of the pixel. Thereby, the area | region which arrange | positions the insulating layer 26 can be increased further. Since the linear protrusions 24 are originally made thick, even if the insulating layer 26 is integrated with the main protrusions, the liquid crystal alignment in the pixel openings is not adversely affected. In this case, the insulating layer 26 is preferably disposed on the side opposite to the center of the pixel of the linear protrusion 24 disposed at the corner of the pixel when viewed in plan. As a result, the influence of the insulating layer 26 on the liquid crystal alignment in the pixel opening can be minimized.

In addition, the insulating layer 26 is disposed in a region where the source bus line 12 and the storage capacitor wiring 33 intersect when viewed in plan. In such a cross portion of the wiring, a portion that overlaps with a lower layer (insulating substrate 10 side) wiring (retention capacitor wiring 33) when the upper layer (liquid crystal layer 8 side) wiring (source bus line 12) is viewed in plan view. The liquid crystal layer 8 swells (curves) and comes closer to the common electrode. As a result, the parasitic capacitance becomes particularly large. Therefore, by providing the insulating layer in a region where the wirings intersect, the parasitic capacitance between the wirings and the common electrode can be particularly reduced. Moreover, it is possible to prevent a short circuit between the substrates from occurring at the wiring crossing portion. In this way, the wiring (in this embodiment, the source bus line 12) has a raised portion whose height is relatively high when viewed in cross section, and the insulating layer 26 is a plan view of the substrate. Sometimes, it may be arranged in a region overlapping with the raised portion. Note that the height of the raised portion is usually higher by the thickness of the member located below the raised portion that raises the raised portion than the portion other than the raised portion. Further, in the wiring cross portion of the present embodiment, the raised portion of the source bus line 12 is higher by the thickness of the storage capacitor wiring 33 than the portion that does not overlap the storage capacitor wiring 33 when viewed in plan. More specifically, the raised portion of the source bus line 12 is usually about 400 to 700 nm higher than the portion that does not overlap the storage capacitor wiring 33 when viewed in plan.

Further, in the present embodiment, the light shielding region of the linear auxiliary protrusion 25 arranged on the light shielding region side of the linear auxiliary protrusion 25 in the upper right and lower right corner portions of each subpixel, that is, the side forming the corner portion. An insulating layer 26 is disposed on the (gate bus line 11) side. Thereby, it is possible to further reduce the liquid crystal material and the parasitic capacitance while minimizing the influence on the liquid crystal alignment in the pixel opening. When the insulating layer 26 is formed integrally with the linear auxiliary protrusion 25, there is a concern that the linear auxiliary protrusion 25 becomes thick and adversely affects liquid crystal alignment. However, as shown in FIG. 35, the insulating layer 26 is formed integrally with the root portion of the linear auxiliary protrusion 25 arranged at the corner of the pixel (subpixel in the present embodiment), and the linear auxiliary protrusion. The width of the taper 25 decreases from the root portion toward the tip portion. Therefore, the linear auxiliary protrusions 25 at the corners can attach the alignment direction of the liquid crystal molecules 36 to the 45 ° direction having the highest light transmittance. For this reason, the light transmittance at the corner can be increased, so that a decrease in the light transmittance at the entire pixel opening can be substantially eliminated. That is, according to these forms, the insulating layer 26 can be disposed integrally with the linear auxiliary protrusion 25 without adversely affecting the alignment of the liquid crystal in the pixel opening. Thus, in the present embodiment, at least one of the active matrix substrate 1 and the counter substrate 2 has the linear auxiliary protrusions 25 on the liquid crystal layer 8 side of the insulating substrate 10, and the insulating layer 26 is a corner portion of the pixel. It is preferable that the linear auxiliary projection 25 is formed integrally with the root portion of the linear auxiliary projection 25 arranged in the shape of the linear auxiliary projection 25, and the width of the linear auxiliary projection 25 becomes narrower from the root portion toward the tip portion when seen in a plan view. At least one of the active matrix substrate 1 and the counter substrate 2 has the linear auxiliary protrusions 25 on the liquid crystal layer 8 side of the insulating substrate 10, and the insulating layer 26 has the linear auxiliary protrusions 25 arranged at the corners of the pixels. It is preferable to form integrally with parts other than the front-end | tip part. The linear auxiliary protrusion 25 may have a shape in which the width gradually decreases from the root portion toward the tip portion when viewed in a plan view, or the width of the line auxiliary protrusion 25 gradually increases from the root portion toward the tip portion. The form which becomes thin automatically may be sufficient. Further, the linear auxiliary projection 25 whose width decreases from the root portion toward the tip portion can be easily manufactured by integrally forming the root portion of the linear auxiliary projection 25 and the insulating layer 26.
Thus, the amount of liquid crystal material used can be reduced also in this embodiment. Note that the liquid crystal display panel of the present embodiment can be manufactured using the same manufacturing method as that of the liquid crystal display panel of the first embodiment, and thus the description thereof is omitted.

<Embodiment 3>
A liquid crystal display device of Embodiment 3 will be described. It should be noted that the description and illustration of the contents overlapping between the present embodiment and the first and second embodiments are omitted.

FIG. 36 is a schematic plan view showing the configuration of the liquid crystal display panel of the third embodiment. FIG. 37 is a schematic plan view showing the configuration of the active matrix substrate of the third embodiment. Further, FIG. 38 is a schematic plan view showing the configuration of the counter substrate of the third embodiment. As in the second embodiment, the liquid crystal display panel 103 of the present embodiment includes two sub-pixels 7a and 7b, and the pixel 6 is configured. In this embodiment, the insulating layer 26 is disposed on the TFT 16a and 16b regions. That is, the insulating layer 26 is disposed in a region overlapping with the switching element when viewed in plan. The region where the TFTs 16 a and 16 b are formed is on the gate bus line 11, and the source bus line 12 (including the source electrode) constituting the TFTs 16 a and 16 b approaches the common electrode. That is, in the region where the TFT is formed, the wiring has a raised portion. Accordingly, as in the case of the wiring cross portion in the second embodiment, the parasitic capacitance can be reduced more effectively. Further, when the wiring constituting the TFT approaches the counter electrode, when a metal foreign matter enters the interlayer insulating film covering the source bus line 12 or the BM of the counter substrate, the counter electrode and the source bus line 12 (or TFTs 16a and 16b) Becomes easier to short circuit. Therefore, the yield of the liquid crystal display panel can be improved by disposing the insulating layer 26 on the TFT 16a and 16b regions. In the switching elements (TFTs 16a and 16b) of the present embodiment, the raised portions (source electrodes constituting the TFT) of the source bus line 12 have the switching elements (TFTs 16a and 16b) and the gate bus line 11 when viewed in plan. The gate bus line 11, the active semiconductor layer (not shown), and the low-resistance semiconductor layer (not shown) are thicker than the portion that does not overlap with the source bus line 12. In general, the raised portion is about 400 to 700 nm higher than a portion that does not overlap the switching elements (TFTs 16a and 16b) and the gate bus line 11 when seen in a plan view. In this embodiment, the insulating layer 26 is a wiring cross section (a region where the source bus line 12 and the gate bus line 11 intersect, a region where the source bus line 12 and the storage capacitor wiring 33 intersect when viewed in plan. Etc.). Note that, in the wiring cross portion, the upper wiring (in this embodiment, the source bus line 12) has a raised portion, as in the second embodiment. Therefore, by disposing the insulating layer 26 in such a region, it is possible to effectively reduce the parasitic capacitance generated at the cross portion of the wiring. Moreover, it is possible to prevent a short circuit between the substrates from occurring at the wiring crossing portion. Note that, in the cross portion of the wiring according to the present embodiment, the raised portion of the source bus line 12 has the gate bus line 11 or the holding portion with respect to a portion that does not overlap the gate bus line 11 and the storage capacitor wiring 33 when viewed in plan. More specifically, the raised portion of the source bus line 12 is usually about 400 to 700 nm with respect to a portion that does not overlap the gate bus line 11 when viewed in plan. It is high. Note that the gate bus line 11 and the storage capacitor line 33 are usually formed in the same process, and therefore have the same thickness.

Further, in order to use as a pedestal for the columnar spacer, the gate bus line 11 has a wide portion 29 whose width is relatively thick. However, when the wide portion is provided in the wiring as described above, the wiring area is increased and the parasitic capacitance is increased. On the other hand, in this embodiment, the insulating layer 26 is disposed corresponding to the wide portion 29 of the gate bus line 11. That is, the wiring (the gate bus line 11 in the present embodiment) has a wide portion 29 whose width is relatively thick when viewed in plan, and the insulating layer 26 has a wide portion when viewed in plan. 29 is arranged in a region overlapping with 29. As a result, an increase in parasitic capacitance due to an increase in wiring area can be effectively suppressed. Note that the width of the wiring is the length of the wiring in a direction substantially perpendicular to the extending direction of the wiring. Further, since the columnar spacer is provided on the wide portion 29 of the gate bus line 11, the insulating layer 26 is preferably disposed on the counter substrate (substrate having a common electrode). Furthermore, the columnar spacers are usually not provided corresponding to all the wide portions (pixels), and are arranged by being thinned out as appropriate. On the other hand, the insulating layer 26 disposed corresponding to the wide portion 29 is disposed corresponding to substantially all the wide portions 29 from the viewpoint of more effectively reducing the parasitic capacitance and the amount of liquid crystal material used. It is preferable. Although the width of the wide portion is not particularly limited, it is preferably larger than the diameter of the columnar spacer, and the diameter of the columnar spacer when viewed in plan is usually about 10 to 50 μm. Specifically, the width of the wide portion is preferably about 20 to 60 μm. On the other hand, the width of the portion other than the wide portion of the wiring (the gate bus line 11 in this embodiment) is usually about 15 to 40 μm. In particular, since a stacked columnar spacer formed by stacking a plurality of layers has a large diameter, a wide portion may be provided in a wiring at a corresponding position. In this case, this embodiment is preferable.

In the present embodiment, the insulating layer 26 is arranged in an island shape (island shape) when viewed in plan. As a result, it is possible to improve applicability (secure passage) when the alignment film is applied by the ink jet method. In addition, it is possible to suppress the generation of vacuum bubbles by securing the passage of the liquid crystal material. From the same point of view, the insulating layer 26 has a shape that does not have a region surrounded by the insulating layer 26 (a closed region formed by the insulating layer 26), a shape that has a slit, and an annular shape when viewed in plan. The form etc. which are not arrange | positioned may be sufficient.

When the insulating layer is disposed in an island shape as in the present embodiment, the insulating layer 26 disposed in the boundary region between the pixels has a linear auxiliary protrusion at the end of the pixel when viewed in plan. It is preferable that 25 is preferentially disposed in the opposed region. Such a region between the linear auxiliary protrusions 25 provided at the end portions of the adjacent pixels is disposed on the end portion of the CF layer disposed on the BM 20 and further on the end portion of the CF layer. In many cases, it is particularly recessed due to the presence of the linear auxiliary protrusion 25. As a result, in this region, the alignment film is liable to have a slippage defect or a cell thickness defect due to dust. Therefore, the occurrence of such defects can be effectively reduced by providing the insulating layer 26 preferentially in this region.
Thus, the amount of liquid crystal material used can be reduced also in this embodiment. Note that the liquid crystal display panel of the present embodiment can be manufactured using the same manufacturing method as that of the liquid crystal display panel of the first embodiment, and thus the description thereof is omitted.

<Embodiment 4>
A liquid crystal display device of Embodiment 4 will be described. In addition, description and illustration about the content which overlaps by this embodiment and Embodiment 1-3 are abbreviate | omitted.

FIG. 39 is a schematic cross-sectional view illustrating the configuration of the liquid crystal display panel of the fourth embodiment. As shown in FIG. 39, the liquid crystal display panel 104 of this embodiment has a BM 20 made of resin on the common electrode 23 of the counter substrate 2, and the BM 20 has at least wiring (source bus line 12 in FIG. 39). Further, an insulating layer 26 is provided on the liquid crystal layer 8 side of the insulating BM 20. That is, at least one of the active matrix substrate 1 and the counter substrate 2 of the present embodiment has a plurality of color filters (in the present embodiment, each color filter 21R on the liquid crystal layer 8 side of the insulating substrate 10 in order from the insulating substrate 10 side). , 21G, 21B) include a CF layer 22 arranged with a gap, a common electrode 23 provided on substantially the entire surface of the insulating substrate 10 and the CF layer 22, an insulating BM 20, and an insulating layer 26. The insulative BM 20 and the insulating layer 26 are arranged in the gaps between the plurality of color filters when viewed in plan. As described above, the common electrode 23 is recessed toward the insulating substrate 10 by the film thickness of the CF layer 22, so that the distance between the common electrode 23 and the wiring is increased as compared with the configuration of the first embodiment, and the liquid crystal material Instead, since the portion occupied by the BM 20 and the insulating layer 26 increases, the parasitic capacitance can be further reduced. Further, since the volume in the panel can be reduced in the light-shielding region that is a region that does not affect the display in the panel, the amount of liquid crystal material used can be reduced. The insulating BM 20 and / or the insulating layer 26 may also serve as linear protrusions and / or linear auxiliary protrusions. In the present embodiment, it is preferable that the wiring is usually disposed so as to overlap with a region where the common electrode 23 is recessed (color filter gap) when viewed in plan. Furthermore, in this embodiment, at least one of the substrates includes a color filter layer in which a plurality of color filters are arranged with a gap in order from the insulating substrate side on the liquid crystal layer side of the insulating substrate, and the insulating substrate and the color substrate. A common electrode provided on substantially the entire surface of the filter layer and an insulating layer, and the insulating layer may be disposed between the color filters when the substrate is viewed in plan. In the above, the insulating layer may have a structure in which a first insulating layer and a second insulating layer are laminated in order from the insulating substrate side, and the first insulating layer may have a light shielding property, The insulating layer has a structure in which a first insulating layer and a second insulating layer are laminated in order from the insulating substrate side, and the first insulating layer and / or the second insulating layer has a light shielding property. May be.
Thus, the amount of liquid crystal material used can be reduced also in this embodiment. Note that the liquid crystal display panel of the present embodiment can be easily changed only by changing the order of forming the respective members of the counter substrate of the first embodiment, and thus the details thereof are omitted. In the counter substrate of this embodiment, the CF layer, the common electrode, the BM, the insulating layer, the linear protrusion, and the linear auxiliary protrusion are formed in this order.

<Embodiment 5>
A liquid crystal display device of Embodiment 5 will be described. In addition, description and illustration about the content which overlaps in this embodiment and Embodiment 1-4 are abbreviate | omitted.

FIG. 40 is a schematic cross-sectional view illustrating the configuration of the liquid crystal display panel of the fifth embodiment. As shown in FIG. 40, the liquid crystal display panel 105 of the present embodiment includes an active matrix substrate 1 between at least the common electrode 23 on the counter substrate 2 and at least wiring of the active matrix substrate 1 (source bus line 12 and the like). An insulating layer 26 is provided on the liquid crystal layer 8 side. That is, both the active matrix substrate 1 and the counter substrate 2 have the insulating layer 26 disposed between the common electrode 23 and the wiring (the source bus line 11 and the like) on the liquid crystal layer 8 side. Thereby, the parasitic capacitance existing between the wiring and the counter electrode and the usage amount of the liquid crystal material can be more effectively reduced without increasing the resistance of the entire counter electrode.

Further, the active matrix substrate 1 of the present embodiment preferably has a linear protrusion 24 and / or a linear auxiliary protrusion (not shown) as the alignment control structure. Thereby, since the insulating layer 26 on the active matrix substrate 1 side can be formed in the same process using the material of the linear protrusions 24, the manufacturing process can be simplified. As described above, when both the substrates have the linear protrusions 24 and / or the linear auxiliary protrusions 25, the linear protrusions and / or the linear auxiliary protrusions included in the active matrix substrate 1 and the linear protrusions included in the counter substrate 2 and Although the material of each of the linear auxiliary protrusions may be different, it is preferably formed using the same material from the viewpoint of simplifying the manufacturing process. Therefore, in this case, the material of the insulating layer 26 provided on both the substrates is preferably the same.

In addition, the insulating layer 26 on the active matrix substrate 1 side of the present embodiment may have a light-shielding property (light absorption) and / or a colored shape, like the insulating layer 26 on the counter substrate 2 side. preferable. Thereby, the light-shielding property of the light-shielding region can be improved. Moreover, these forms are suitable when the taper controllability is improved by reducing the film thickness of the BM 20 made of a photosensitive resin material. Furthermore, when the insulating layer 26 on the active matrix substrate 1 side is a colored film, it can be used in place of the BM 20 by combining with the color filters 21R, 21G, and 21B of the counter substrate 2. The linear protrusions 24 and / or the linear auxiliary protrusions in the pixel region are similarly colored, so that light leakage from the vicinity of the linear protrusions 24 and / or the linear auxiliary protrusions during black display is suppressed. As a result, the black luminance is lowered, and as a result, the contrast can be improved.
Thus, the amount of liquid crystal material used can be reduced also in this embodiment. Note that the liquid crystal display panel of this embodiment is the same as that of the embodiment except that, instead of providing a slit in the pixel electrode of the active matrix substrate, an insulating layer and linear protrusions are formed in the same manner as the counter substrate after the pixel electrode is formed. Since it can be manufactured using the same manufacturing method as that of the liquid crystal display panel 1, description thereof is omitted.

<Embodiment 6>
A liquid crystal display device of Embodiment 6 will be described. In addition, description and illustration about the content which overlaps in this embodiment and Embodiment 1-5 are abbreviate | omitted.

FIG. 41 is a schematic plan view showing the configuration of the liquid crystal display panel of the sixth embodiment. In the drawing, a region surrounded by a one-dot chain line indicates BM 20, and a region painted in gray indicates the structure 41. FIG. 42 is a schematic cross-sectional view taken along line Z1-Z2 in FIG. FIG. 43 is a schematic plan view showing the configuration of the active matrix substrate of the sixth embodiment. FIG. 44 is a schematic plan view illustrating the configuration of the counter substrate according to the sixth embodiment. In FIG. 7, the white portion functions as the linear protrusion 24, and the shaded portion functions as the linear auxiliary protrusion 25. As shown in FIG. 42, the liquid crystal display panel 106 of the present embodiment is a pair of substrates arranged so as to face each other, like the liquid crystal display panel 101 of the first embodiment, and the counter substrate 2. And a liquid crystal layer 8 provided between these substrates. In addition, these substrates are held with a certain interval (cell gap) by a spacer (not shown). Examples of the spacer include columnar spacers, spherical spacers, etc. Among them, columnar spacers are preferable.

As shown in FIGS. 41, 42 and 43, the active matrix substrate 1 of the present embodiment includes a transparent insulating substrate 10 such as glass and a gate bus line (scanning signal) formed on the insulating substrate 10 on the liquid crystal layer 8 side. Line, gate wiring) 11, a gate insulating film (not shown) formed on substantially the entire surface of the insulating substrate 10 so as to cover the gate bus line 11, thin film transistors (TFTs) provided at the corners of each pixel, etc. Active element (switching element) 16, source bus line (data signal line, source wiring) 12 including a source electrode, drain electrode (drain lead-out wiring) 37, source bus line 12, active element 16 and drain electrode 37. An interlayer insulating film (passivation film) 13 formed on substantially the entire surface of the insulating substrate 10 and a transparent conductive film on the interlayer insulating film 13. It includes a Ranaru pixel electrode 14, and a vertical alignment film 17a provided in contact with the liquid crystal layer 8. The active matrix substrate 1 has a storage capacitor line (auxiliary capacitor line, not shown) formed of the same material as the gate bus line 11.

The pixel electrode 14 is connected to the drain electrode (drain lead wiring) 37 via the contact hole 30 of the interlayer insulating film 13. Further, as shown in FIG. 41, the pixel electrodes 14 are arranged in a matrix in the display region 3 and are provided with electrode slits (electrode removal portions) 15 as in the first embodiment.

Note that the gate bus lines 11 and the source bus lines 12 are respectively provided with gate lead lines (not shown) provided on the side of the gate terminal portion 50 and the source terminal portion 51 in the non-display area 4 as in the first embodiment. The source lead wiring (not shown) is connected.

As in the first embodiment, the counter substrate 2 of the present embodiment includes a transparent insulating substrate 10 such as glass, a light shielding layer 20 formed on the liquid crystal layer 8 side of the insulating substrate 10, a red color filter 21R, and green. A color filter layer (CF layer) 22 including a color filter 21G and a blue color filter 21B, a common electrode (counter electrode) 23 made of a transparent conductive film and the like, a linear protrusion 24 formed on the common electrode 23, and a linear shape An auxiliary protrusion 25 and a vertical alignment film 17 b provided so as to be in contact with the liquid crystal layer 8 are provided.

The red color filter 21R, the green color filter 21G, and the blue color filter 21B are provided in a strip shape corresponding to the plurality of pixel electrodes 14 arranged in the column direction provided on the active matrix substrate 1 side. The color filters 21R, 21G, and 21B are repeatedly arranged in the order of the red color filter 21R, the green color filter 21G, and the blue color filter 21B in the row direction.

The light shielding layer (BM) 20 is disposed in the gap between the color filters when viewed in plan. As described above, the BM 20 is provided in a slit shape along the boundary of the pixels in the column direction when viewed in plan. Then, the color filters 21R, 21G, and 21B are arranged in the opening region of the BM 20 so that the end portions thereof partially overlap the BM 20. That is, each color filter 21R, 21G, 21B has a color filter overlapping portion 38 whose end portion partially overlaps BM20. In addition, a part of the linear auxiliary protrusion 25 is disposed so as to overlap the color filter overlapping portion 38 in the vicinity of the end portion of the pixel region. That is, the linear auxiliary protrusion 25 has an auxiliary protrusion overlapping portion 39 that overlaps at least a part of the color filter overlapping portion 38.

The counter substrate 2 includes color filter overlapping portions 38, and linear convex portions 40a and 40b that are configured by the color filter overlapping portions 38 and the auxiliary protrusion overlapping portions 39 that face each other. That is, in the present embodiment, at least one of the active matrix substrate 1 and the counter substrate 2 includes, on the liquid crystal layer 8 side of the insulating substrate 10, the BM 20 having openings in order from the insulating substrate 10 side, and a plurality of color filters (each color The color filters 21R, 21G, and 21B have a CF layer 22 disposed in the opening of the BM 20, a linear protrusion 24, and a linear auxiliary protrusion 25. The CF layer 22 includes a plurality of color filters (each color filter). 21R, 21G, and 21B) have a color filter overlapping portion 38 that is partially overlapped with the BM 20, and the linear auxiliary protrusion 25 is at least partially overlapped with the color filter overlapping portion 38. The substrate having the auxiliary protrusion overlapping portion 39 and having the BM 20, the CF layer 22, the linear protrusion 24, and the linear auxiliary protrusion 25 has a color filter weight. And Ri 38 has the color filter overlapping portion 38 and the auxiliary projection overlap portion 39. From configured linear convexes 40a, the 40b. The substrate having the BM 20, the CF layer 22, the linear protrusion 24, and the linear auxiliary protrusion 25 includes a color filter overlapping portion 38, a color filter overlapping portion 38, and an auxiliary protrusion overlapping portion 39. You may have the convex parts 40a and 40b. As described above, in the substrate on which the linear convex portions 40a and 40b facing each other are formed, conventionally, when the vertical alignment films 7a and 7b are applied by a printing method, the linear convex portions 40a and 40b are caused by the linear convex portions 40a and 40b. Display unevenness may occur. However, the counter substrate 2 further includes a structure 41 that is spaced from the linear protrusions 40a and 40b and disposed between the linear protrusions 40a and 40b when viewed in plan. That is, in the present embodiment, at least one of the active matrix substrate 1 and the counter substrate 2 (the counter substrate 2 in the present embodiment) has at least one pair of linear protrusions 40a and 40b facing each other and one set of linear shapes. The structure 41 arranged between the convex portions 40a and 40b is provided on the liquid crystal layer 8 side. Thereby, generation | occurrence | production of the display nonuniformity resulting from the linear convex parts 40a and 40b can be suppressed. In addition, since the region sandwiched between the linear protrusions 40a and 40b is usually a region that is not related to display, such as a light shielding region, the liquid crystal layer is occupied without losing display quality by arranging the structure 41. The volume, that is, the amount of liquid crystal material used can be reduced. The linear convex portions 40a and 40b are convex portions having a substantially linear planar shape. Moreover, the linear convex parts 40a and 40b are normally arrange | positioned substantially parallel mutually when planarly viewed. Furthermore, since the linear protrusions 40a and 40b are normally formed corresponding to the pixel pattern, at least one of the substrates (the counter substrate 2 in this embodiment) has a plurality of sets of linear protrusions. The plurality of sets of linear protrusions are periodically arranged over substantially the entire display area. Moreover, the cross-sectional shape of the structure is usually substantially convex. Further, as in the present embodiment, the linear convex portions 40 a and 40 b that are composed of the color filter overlapping portion 38 and the color filter overlapping portion 38 and the auxiliary projection overlapping portion 39 are opposed to each other from the color filter overlapping portion 38. The linear convex parts 40a and 40b which oppose each other having the part comprised and the part comprised from the color filter overlap part 38 and the auxiliary | assistant protrusion overlap part 39 are meant.

Here, the cause of occurrence of display unevenness and the effect of this embodiment will be described in more detail. First, a conventional form of display unevenness will be described more specifically with reference to FIGS. FIG. 54 is a schematic cross-sectional view showing a conventional BM and a color filter layer. FIG. 55 is a schematic cross-sectional view showing a state in which an alignment film is applied on a conventional BM and color filter layer, (a) shows a state in which an application failure of the alignment film occurs, and (b) The state in which the alignment film is normally applied is shown. FIG. 56 is a schematic plan view showing a conventional liquid crystal display panel in which display unevenness occurs. FIG. 57 is a schematic cross-sectional view showing a conventional color filter layer and linear auxiliary protrusions. FIG. 58 is a schematic cross-sectional view showing a conventional BM, a color filter layer, and linear auxiliary protrusions. Conventionally, the BM provided between the resin CFs has been formed using a metal material such as chromium, but in recent years, a resin-made BM using a photosensitive resin has been increasingly used. In addition, compared with metal BM, resin-made BM has the merit that an etching process process can be skipped. However, the resin-made BM has a light shielding ability inferior to that of the metal BM, so that the film thickness of the metal BM is on the order of submicron, whereas the film thickness of the resin BM is 1 μm or more ( For example, the thickness of the metal BM club needs to be set to 1.4 μm. In such a case, as shown in FIG. 54, in the portion where the resin-made CF layer 622 and the resin-made BM 620 are overlapped, the film thickness of the BM 620 is thick. Portions 640a and 640b are formed. The height g of the linear protrusions 640a and 640b corresponds to the maximum thickness of the BM 620 when viewed from the pixel opening side. When such linear protrusions 640a and 640b are formed, depending on the position of the display area of the liquid crystal display panel when forming the alignment film by a printing method, as shown in FIG. In addition to the case where the alignment film solution 44 is applied between the linear protrusions 640a and 640b, as shown in FIG. 55A, the region where the alignment film solution 44 is not applied between the linear protrusions 640a and 640b. As shown in FIG. 56, a linear display unevenness 692 (for example, black streaks) may occur in the display region 603 due to the alignment failure of the alignment film. . In addition, such alignment defects occurring between the linear protrusions are caused by other linear protrusions, for example, linear auxiliary protrusions 625 formed on the CF layer 622 as shown in FIG. Generated by the linear protrusions 640a and 640b formed by the alignment control structure, and as shown in FIG. 58, the CF layer 622 and the resin-made BM 620 overlap with each other, Furthermore, it may occur due to the linear protrusions 640a and 640b formed by the alignment control structures such as the linear auxiliary protrusions 625 formed further. Further, in the case as shown in FIG. 58, since the height of the linear convex portion is further increased, the frequency of occurrence of display unevenness is further increased.

Next, the cause of occurrence of display unevenness in the related art will be described more specifically. In the present embodiment, the alignment film is formed by applying (transferring) the alignment film solution onto the substrate by a printing method. As the printing plate used in the printing method, an APR plate (APR: registered trademark, ultraviolet curable resin) is usually used. FIG. 45 is a schematic diagram showing an APR plate, where (a) is a plan view and (b) is a cross-sectional view. As shown in FIG. 45A, the APR plate 42 has a plurality of cylindrical dots 43 provided on the printing surface. The APR plate 42 has four regions divided by the groove portions, and the alignment film liquid agent can be applied at once to each region of the mother substrate on which four panel patterns are formed by each region. . The portions where the seals and terminals of each panel pattern are formed correspond to the groove portions of the APR plate, and the alignment film solution is not applied. In the alignment film printing apparatus, the alignment film solution is finally supplied to the roller portion around which the APR plate is wound through a plurality of rollers, and is applied onto the dots of the APR plate. Then, the alignment film is formed by transferring the alignment film liquid applied on the dots onto the substrate. FIG. 45 is a schematic diagram, and the dots 43 are usually arranged at 300 to 500 dpi (dot / inch), and interference between the periodic pattern of the substrate and the periodic pattern of dots (also referred to as a mesh). In order to prevent the generation of a moire image, the mesh is generally inclined by a mesh angle θ. The mesh angle θ is appropriately set according to the pattern period of the substrate. Furthermore, the diameter of the dot 43 is usually about several tens of μm. Therefore, immediately after the alignment film liquid is applied (transferred), it is applied in the form of a dot pattern. Thereafter, the alignment film liquid in the form of a dot pattern spreads wet on the substrate, thereby aligning with a uniform film thickness. A film is formed. However, a conventional substrate used for a liquid crystal display panel is usually not flat and has a non-uniform thickness due to the presence of a linear convex portion formed by an overlapping portion of a CF layer and a BM (an irregular shape). Have In such a case, when the alignment film is printed using the APR plate, the alignment film solution 44 first comes into contact with the linear protrusions 640a and 640b, and then, as shown in FIG. It is considered that the portion spreads wet (in the direction of the thick arrow in FIG. 55B). Therefore, in particular, in an area between two (a set) of linear protrusions facing each other, for example, an area on the above-described BM, the alignment film material is difficult to be directly applied. In the region between the linear protrusions 640a and 640b that have not been applied, as shown in FIG. 55A, it is considered that the alignment film solution 44 may not wet and spread. On the other hand, since the amount of the alignment film solution applied is determined by the APR plate, it is basically substantially constant at any location on the substrate. For this reason, in the vicinity of the linear protrusions where the alignment film liquid is not spread and spread, excess alignment film liquid that should spread and spread between the linear protrusions is caused by the pixel opening side (translucent part) due to the surface tension of the liquid itself. And the film thickness of the alignment film is locally increased (a portion surrounded by a circle in FIG. 55A). Therefore, there is a difference in film thickness between the alignment film in the pixel opening in the vicinity of the linear protrusion where the alignment film liquid is spread and the pixel opening in the vicinity of the linear protrusion where the alignment film liquid is not spread. As a result, display unevenness is considered. As described above, there is a step in the gap between the conventional substrate having linear protrusions as shown in FIG. 55 (hereinafter also referred to as “first conventional substrate”) and the color filter as shown in FIG. The behavior of the alignment film solution on a conventional substrate having a portion (hereinafter also referred to as “second conventional substrate”) is different. In addition, the film thickness unevenness of the alignment film in the pixel opening of the first conventional substrate is caused by the increase in film thickness with respect to the normal region, while the alignment in the pixel opening of the second conventional substrate. The film thickness unevenness is caused by the flow of the alignment film liquid agent in the stepped portion, and the film thickness is locally reduced in the vicinity of the stepped portion. As a result, the alignment film is thin in the second conventional substrate. Since the alignment regulating force is reduced at the part that has become, display unevenness is visually recognized. Therefore, the display unevenness that occurs between the first conventional substrate and the second conventional substrate occurs due to different mechanisms. Further, the technique described in Patent Document 7 provides a solution to the problem in the second conventional substrate, while the present embodiment provides a solution to the problem in the first conventional substrate. is there. Thus, since each subject differs in this embodiment and the technique of patent document 7, each structure and operation will necessarily differ. Here, a case where the description in Patent Document 7 is applied to the first conventional substrate in which display unevenness is suppressed according to the present embodiment will be described. 62 (a) and 62 (b) are schematic cross-sectional views showing the configuration of a conventional substrate having opposing linear protrusions and having a planarization structure formed thereon. In this case, as shown in FIG. 62A, for example, the planarizing structure 691 is also disposed on the linear convex portions 640a and 640b configured by the color filter overlapping portion 638 and the auxiliary protrusion overlapping portion 639. Therefore, the height of the linear protrusions 640a and 640b is further increased, and a large and deep recess 693 is generated between the linear protrusions 640a and 640b. And since the inside of this dent 693 is still a region where the alignment film solution is not directly applied, as described above, the alignment film solution 44 does not sufficiently spread into the dent 693 and is the same as in the above case. It is considered that unevenness of the alignment film thickness and display unevenness occur. Further, the alignment regulating force by the auxiliary protrusion 625 is emphasized by the planarization structure 691, and the liquid crystal molecules that are oriented in a direction parallel or perpendicular to the polarization axis direction of the polarizing plate increase, whereby the light transmittance of the pixel opening is increased. It is thought that it falls. On the other hand, as shown in FIG. 62B, for example, a flattening structure 691 is formed so that no dent is formed on the linear convex portions 640a and 640b formed of the color filter overlapping portion 638 and the auxiliary protrusion overlapping portion 639, for example. Is formed, the height of the planarizing structure 691 becomes very high. Therefore, conversely, the alignment film solution is not directly applied to the outer regions (regions on the non-opposing side) of the linear protrusions 640a and 640b, and the alignment film solution applied on the planarizing structure 691 A region where there is no alignment film or a thin region of the alignment film is generated on the surface of the CF layer on the pixel opening side (translucent portion side), and the display unevenness is also caused as a result. It is thought to occur. Also in this case, the alignment regulating force by the auxiliary protrusion 625 is further emphasized by the planarization structure 691, and the number of liquid crystal molecules oriented in a direction parallel or perpendicular to the polarization axis direction of the polarizing plate is increased, so that the pixel opening portion It is conceivable that the light transmittance of the liquid crystal decreases. Further, it is difficult to form the flattened structure 691 only in the recess 693 due to process variations. For example, in the case where the planarization structure 691 protrudes from the recess 693 due to misalignment, the influence of the alignment disorder due to the planarization structure 691 occurs also in the pixel opening, and the display quality is expected to be further deteriorated. In order to secure a margin for this variation, it is necessary to design BM 620 larger than necessary, and the pixel aperture ratio decreases. FIG. 46 is a schematic cross-sectional view showing a configuration in the vicinity of the linear protrusion of the counter substrate according to the sixth embodiment. On the other hand, in the present embodiment, the counter substrate 2 has linear convex portions 40a and 40b composed of the color filter overlapping portion 38 and the auxiliary protrusion overlapping portion 39 as shown in FIG. Since the structure 41 is further provided between the portions 40a and 40b, the alignment film solution 44 on the APR plate (on the dots) can be directly applied to the structure 41 as well as the linear protrusions 40a and 40b. Accordingly, the alignment film solution 44 spreads wet from the linear protrusions 40a and 40b and the structure 41 to other low portions (in the direction of the thick arrow in FIG. 46), and is always linear protrusions. The alignment film solution can be spread between 40a and 40b. As a result, it is possible to suppress the occurrence of display unevenness due to the uneven film thickness of the alignment film and realize a liquid crystal panel excellent in display quality. Further, by disposing the structure 41 away from the color filter overlapping portion 38 and the auxiliary protrusion overlapping portion 39, even if the position or thickness of the structure 41 varies, the structure is located between the linear protrusions 40a and 40b. 41 can be easily accommodated, and the adverse effect of the structure 41 on the alignment of the liquid crystal in the pixel opening can be suppressed.
Below, the other suitable form and deformation | transformation form in this embodiment are demonstrated.

In the study by the present inventors, in the conventional substrate, as shown in FIG. 54, the height h of the linear protrusions 640a and 640b from the upper surface of the pixel opening of the CF layer 622 is about 0.4 μm or more, Alternatively, when the height g of the linear protrusions 640a and 640b from the upper surface of the BM 620 is about 1.3 μm or more, display unevenness is likely to occur, and h is about 1.3 μm or more, or g is 2. If it is about 6 μm or more, is it likely to cause uneven display? Therefore, the effect of the present invention to suppress the occurrence of display unevenness is that the height of the linear protrusions 40a and 40b with respect to the region between the linear protrusions 40a and 40b (in this embodiment, the linear shape from the upper surface of the BM 20). A shape in which the height g) of the protrusions 40a and 40b is 1.3 μm or more (more preferably 2.6 μm or more), and a linear protrusion for a region opposite to the region between the linear protrusions 40a and 40b. The height of the portions 40a and 40b (in this embodiment, the height h of the linear protrusions 40a and 40b from the upper surface in the pixel opening of the CF layer 22) is 0.4 μm or more (more preferably 1.3 μm or more). ), It is particularly effective.

In addition, it has been found that whether or not display unevenness occurs is related not only to the height of the linear protrusions but also to the distance between the linear protrusions. Therefore, Table 1 shows the evaluation results of examining whether display unevenness occurs by changing the distance between the linear protrusions in the conventional counter substrate. In Table 1, ◯ indicates that display unevenness has not occurred, and x indicates that display unevenness has occurred. FIG. 47 is a schematic cross-sectional view showing the configuration of the sample (counter substrate) used in the evaluation test. The size of each member is as shown in FIG. That is, the height H1 of the color filter overlapping portion 638 from the upper surface of the BM 620 is 1.3 μm, the height H2 of the auxiliary protrusion overlapping portion 639 from the upper surface of the color filter overlapping portion 638 is 1.3 μm, and the CF layer 622 and 1.7μm film thickness _{T CF} of the pixel aperture, and the thickness _{T BM} resin BM20 and 1.35 .mu.m. Further, the counter substrate 602 shown in FIG. 63 was used as the sample (counter substrate) used in the evaluation test. FIG. 63 is a schematic plan view showing the configuration of the sample (counter substrate) used in the evaluation test. As the APR plate, a dot having a diameter of 32 μm, a height of 14 μm arranged at 400 dpi, and a mesh angle θ of 75 ° was used. Then, as the alignment film solution, a vertical alignment film precursor mainly composed of polyimide was dissolved in a solvent, and an amount of the film thickness in the pixel opening after drying was applied to about 0.1 μm.

As a result, in the conventional substrate 602 shown in FIG. 63, if the line-shaped protruding portion 640a, the distance _{L C} between 640b of 12μm or less display unevenness was at all no. On the other hand, the distance L _C is the incidence of the uneven display becomes more 18μm is very high. This is because, when the distance L _C is as small as 12 μm or less, the amount of the alignment film liquid agent that has been applied (applied) on the apex of the linear protrusions spreads between the linear protrusions (on the BM in this embodiment). is a sufficient amount to, on the other hand, when the distance L _C is greater or more 18 [mu] m, the amount of the liquid preparation, since the amount insufficient for spreads between the line-shaped protruding portions, FIG. 55 (b) As shown in Fig. 55, the alignment film solution wets and spreads between the linear protrusions and the alignment film solution does not spread and spread between the linear protrusions as shown in Fig. 55 (a). As described above, it is considered that the film thickness unevenness of the alignment film and the display unevenness occurred. On the other hand, the distance L _C is becomes sufficiently large with respect to the arrangement interval of at least about 36μm and dots, display unevenness was not generated. This is presumably because the APR plate has elasticity, so that the dots on the APR plate are also in direct contact with the gaps between the linear protrusions, and the alignment film solution can spread in the gaps. Note that, for example, such a portion corresponds to a pixel opening, and more specifically, corresponds to the area between the linear protrusions 24 described above. Therefore, the members constituting the linear protrusions in the present invention usually do not include the linear protrusions 24.
Thus, in the conventional, linear protrusions 640a, when the distance _{L C} of 640b is less than 36 .mu.m, or, display unevenness tends to occur when greater than 12 [mu] m. Therefore, in the present invention, the effect of suppressing the occurrence of display unevenness is particularly exerted in the form in which the distance between the linear convex portions 40a and 40b for plan view is smaller than 36 μm and larger than 12 μm. Will be.

Further, in the conventional substrate 602 shown in FIG. 63, if the distance Lc between the linear protrusions 640a and 640b is 12 μm or less, display unevenness does not occur. It can be said that it is preferable that the distance between the convex portions 40a and 40b and the structure 41 is 12 μm or less (more preferably 10 μm or less). As a result, the alignment film liquid agent can be reliably applied and spread between the linear protrusions 40a and the structures 41 and between the linear protrusions 40b and the structures 41. It can suppress more effectively. In addition, as described above, the linear protrusions 40a and 40b and the structure 41 are separated from each other by this amount from the viewpoint of preventing the adverse effect on the alignment of the pixel opening due to the displacement of the structure 41 due to process variations. It is preferable to form them. In the form shown in FIG. 44, the interval between the linear convex portions constituted by the color filter overlapping portion, the color filter overlapping portion, and the auxiliary protrusion overlapping portion is 18 μm, and the space between the linear convex portion and the structure is set. As a result of trial manufacture with an interval of 5 μm, display unevenness was not observed.

Moreover, it is preferable that the structure 41 has substantially the same height as the linear protrusions 40a and 40b. More specifically, the difference in height between the protrusions and the structure is about 1.3 μm or less. Preferably, it is about 0.4 μm or less. This is because if the height gap between the structure 41 and the linear protrusions 40a and 40b is too large, it is difficult for the alignment film solution to get on the structure 41 directly. In addition, the height of the structure 41 is normally smaller than the height of the linear convex parts 40a and 40b.

The constituent members of the linear protrusions 40a and 40b are not particularly limited, but the color filter overlapping portion 38, the color filter overlapping portion 38, and the auxiliary protrusion overlapping portion 39 are configured as described above. A configuration including 38 (see FIG. 52 described later), a configuration including the linear auxiliary protrusion 25 (refer to FIG. 49B described later), and the like are preferable. As described above, the linear convex portions 40a and 40b are configured to include at least one member selected from the group consisting of the color filter overlapping portion 38, the auxiliary protrusion overlapping portion 39, and the linear auxiliary protrusion 25. The form is preferred. The counter substrate 2 shown in FIG. 44 has linear convex portions 40a and 40b (for example, surrounded by circles in FIG. 44) composed of opposing linear auxiliary projections 25 arranged in the row direction in the boundary region of the pixel. Linear protrusions 40a and 40b) arranged in the region, but the distance between the linear auxiliary protrusions 25 is 12 μm or less, and display unevenness does not occur originally. The structure 41 may not be disposed.

The structure 41 preferably includes a resin. Thereby, the structure 41 which has the same height with respect to the linear convex parts 40a and 40b can be formed easily. The structure 41 may be formed from a resin.

The structure 41 is preferably insulative. Thereby, it can suppress that a short circuit generate | occur | produces via the structure 41 between the active-matrix board | substrate 1 and the opposing board | substrate 2. FIG. Further, as shown in FIG. 42, the structure 41 is formed between the common electrode 23 provided on the counter substrate 2 and the wiring (source bus line 11 etc.) provided on the active matrix substrate 1 when viewed in cross section. And arranged so as to overlap the wiring when viewed in plan. Therefore, by forming the structure 41 from an insulating layer, the electrical parasitic capacitance between the wiring and the common electrode 23 can be reduced as in the first embodiment. From this point of view, in the present embodiment, at least one of the active matrix substrate 1 and the counter substrate 2 has a conductive layer on the liquid crystal layer 8 side of the insulating substrate 10, and the structure 41 is formed from the conductive layer. Is also preferably disposed on the liquid crystal layer 8 side. As the conductive layer, a wiring provided on the active matrix substrate 1 and / or a common electrode 23 provided on the counter substrate 2 is preferable. That is, from the viewpoint of reducing parasitic capacitance, one substrate (active matrix substrate 1) has wiring on the liquid crystal layer 8 side of the insulating substrate 10, and the other substrate (counter substrate 2) is liquid crystal on the insulating substrate 10. It is more preferable that the common electrode 23 is provided on the layer 8 side, and the structure 41 is insulative and is disposed between the common electrode 23 and the wiring.

As in the first embodiment, from the viewpoint of easily forming the structure 41 without complicating the manufacturing process, the structure 41 is a substrate having the structure 41 (hereinafter referred to as the counter substrate 2 in the present embodiment). It is preferable to include the same material as any of the constituent members (the linear protrusion 24, the linear auxiliary protrusion 25, the color filter layer, etc.). The structure 41 may be a layer made of the same material as any member constituting the substrate having the structure 41. The linear protrusions 24, the linear auxiliary protrusions 25, and the color filter layer are usually formed using an insulating material such as an insulating resin. Therefore, by forming the structure 41 by using any of the materials of the linear protrusion 24, the linear auxiliary protrusion 25, and the color filter layer in this way, the above-described form (the form in which the structure 41 is insulative). And the structure 41 includes a resin). In addition, when the structure 41 is formed of the same material as the linear auxiliary protrusion 25, the structure 41 and the linear auxiliary protrusion 25 are integrated, and the alignment regulating force of the linear auxiliary protrusion 25 becomes too strong, and the plane When viewed, there is a concern that the number of liquid crystal molecules directed in a direction substantially parallel to or substantially perpendicular to the polarization axis direction of the polarizing plate increases, and as a result, the light transmittance of the pixel opening decreases. However, according to the present invention, even if the linear convex portion is configured to include the linear auxiliary projection and the structure is formed of the same material as the linear auxiliary projection, the gap between the structure and the linear convex portion is determined. Since a gap is provided in the case, as described above, it is possible to effectively suppress the occurrence of a decrease in transmittance (deterioration of display quality) due to the strengthening of the alignment regulating force of the linear auxiliary protrusions.

The structure 41 is preferably disposed in the light shielding region when viewed in plan. Thereby, it can suppress that the light transmittance of a pixel opening part reduces with the structure 41, As a result, the deterioration of display quality can be suppressed.

Moreover, it is preferable that the structure 41 is colored. That is, the structure 41 preferably has a light shielding property, and is preferably formed of a light shielding material, a coloring material, or the like. However, the optical density OD value of the structure 41 is not limited to the above, and the OD value of the structure 41 may be about 1.0, for example. In such a case, it is sufficient that the OD value of the BM 20 is sufficiently large, and the structure 41 can function as an auxiliary light shielding member. In addition, a material having a small OD value has an advantage that the pigment concentration is low and patterning by a photolithography method is relatively easy. For this reason, when the structure 41 is made of the same material as the material of the linear protrusions 24 and the linear auxiliary protrusions 25, the linear protrusions 24 and the linear auxiliary protrusions 25 can be easily formed into desired shapes. The light shielding property may be a property that blocks light transmission, and may be a property that absorbs light. Therefore, the structure 41 may have light absorptivity. As the material of the structure 41 having the light shielding property, for example, the resin itself may be a material having a low light transmittance, and as the material of the colored structure 41, for example, a colorant such as a pigment or a dye is mixed. Resin may be used. From the viewpoint of reliability, a pigment is preferable as the colorant, and a carbon black pigment is preferable as the pigment having excellent light shielding properties. The pigment used for the structure 41 may be a mixture of at least two pigments of red, blue, and green. Further, by using red and blue pigments alone or in combination (mixing) of red and blue pigments, the structure 41 may be colored and have a certain degree of light absorption. it can. As the color pigment, for example, the following materials can be used. That is, examples of the red pigment include azo, quinacridone, anthraquinone, anthraquinone, perylene, and perinone red pigments, or combinations of these red pigments. Examples of the green pigment include a combination of phthalocinine green and a yellow pigment. Examples of the blue pigment include a combination of a phthalocyanine blue pigment and a violet pigment. By coloring the structure 41 in this manner, the light shielding property of the region light shielding region can be improved. Therefore, this form is suitable for the case where it is desired to reduce the film thickness of the BM 20 made of a photosensitive resin material and improve its taper controllability. This is because even if the film thickness of the BM 20 is reduced, the colored structure 41 can compensate for the reduced light shielding property of the BM 20. Thus, the form in which the structure 41 has light shielding properties and the form in which the structure 41 is colored are the form in which the structure 41 is disposed in the light shielding region when viewed in plan, and the form when viewed in plan. It is preferable that the structure 41 is appropriately combined with the configuration in which the structure 41 is arranged so as to overlap the BM 20. Further, in the form in which the structure 41 is colored, the structure 41 is preferably formed using the same material as the linear protrusions 24 and / or the linear auxiliary protrusions 25 in the pixel region. Since the linear protrusions 24 and / or the linear auxiliary protrusions 25 are also colored in the same manner as the structure 41, light is emitted from the region where the linear protrusions 24 and / or the linear auxiliary protrusions 25 are arranged during black display. The occurrence of leakage can be suppressed. Therefore, since the black luminance (the luminance at the time of black display) can be reduced, the contrast can be improved.

As the members constituting the linear protrusions 40a and 40b, as described above, the alignment control protrusion, the color filter overlapping portion, and the like are preferable. In addition, these members are usually arranged in a light shielding region and / or a boundary region between pixels. Therefore, as an arrangement form of the linear protrusions 40a and 40b, a form in which the linear protrusions 40a and 40b are arranged along the light shielding region (BM20 in the present embodiment) when viewed in plan is preferable. A form in which the linear convex portions 40a and 40b are arranged along the end portion of the light shielding region when viewed in plan is more preferable. Further, when viewed in a plan view, the linear protrusions 40a and 40b may be arranged along a boundary region between pixels. Furthermore, since the structure 41 is disposed between the linear protrusions 40a and 40b, a configuration in which the structure 41 is disposed in a boundary region between pixels when viewed in plan is also preferable.

Further, like the insulating layer 26 of the first embodiment, the structure 41 is preferably disposed in a region that does not affect the alignment of the liquid crystal molecules in the pixel region when viewed in plan. More preferably, the light-shielding region is disposed in a region that does not affect the alignment of liquid crystal molecules in the pixel region. The structure 41 provided on the counter electrode 23 usually has the property of affecting the alignment direction of the liquid crystal by the effect of the shape and the effect of changing the electric field, like the linear protrusion 24 and the linear auxiliary protrusion 25. Have. Therefore, depending on the place where the structure 41 is disposed, it may cause a decrease in light transmittance in the pixel opening and a residual image in the display image. Therefore, by disposing the structure 41 in a region that does not affect the alignment of the liquid crystal molecules in the pixel region, it is possible to suppress a decrease in light transmittance and generation of an afterimage. The region that does not affect the alignment of the liquid crystal molecules in the pixel region is not particularly limited, but more specifically, the structure 41 is arranged by separating the edge (end) of the structure 41 and the edge of the pixel electrode 14. It is preferred that That is, one of the substrates (the counter substrate 2 in the present embodiment) has the pixel electrode 14 on the liquid crystal layer 8 side of the insulating substrate 10, and the structure 41 is in a region that does not overlap with the pixel electrode 14 when viewed in plan. Preferably they are arranged. The distance between the edge of the pixel electrode 14 and the edge of the structure 41 is preferably 2 μm or more, more preferably 5 μm or more, and considering the deviation at the time of bonding the substrates, the distance is 7 μm or more. More preferably. By providing an interval of 7 μm or more between the edge of the pixel electrode 14 and the edge of the structure 41, the alignment disorder of the liquid crystal on the pixel electrode 14 can be reliably prevented.

FIG. 48 is a schematic plan view illustrating another configuration of the counter substrate according to the sixth embodiment. As shown in FIG. 48, the structures 41 may be arranged in an island shape (island shape) when viewed in plan. Thereby, the passage of the liquid crystal material in the liquid crystal injection or dripping step can be secured, and the occurrence of residual bubbles (vacuum bubbles, spaces in which no liquid crystal exists) can be suppressed when the liquid crystal is sealed. From the same viewpoint, when the structure 41 is viewed in plan, the structure 41 does not have a region surrounded by the structure 41 (a closed region formed by the structure 41), has a slit, or has an annular shape. The form etc. which are not arrange | positioned may be sufficient.

As shown in FIG. 48, when the structures 41 are arranged in an island shape, the insulating layer 26 is located in a region where the linear auxiliary protrusions 25 at the end of the pixel face each other when seen in a plan view. It is preferable to arrange them preferentially. That is, the insulating layer 26 is preferably disposed between the portions formed by the auxiliary protrusion overlapping portions 39 and the color filter overlapping portions 38 of the linear convex portions 40a and 40b, and the pixels of the linear convex portions 40a and 40b. It is more preferable that the auxiliary protrusions 39 and the color filter overlaps 38 provided at the ends of the color filter overlap portions 38 are disposed between the portions. Thus, since the linear convex parts 40a and 40b comprised of a plurality of members have large heights, display unevenness is likely to occur. Therefore, by providing the insulating layer 26 preferentially in this region, the occurrence of display unevenness can be effectively suppressed.

Further, when the structures 41 are arranged in an island shape, the structures 41 are preferably arranged in a region surrounded by a circle in FIG. 48, more specifically, in the vicinity of the corner of the pixel. In such a region, the linear protrusions 24 and / or the linear auxiliary protrusions 25 are arranged so that the ratio of the linear protrusions is large, and the printability of the alignment film tends to be particularly deteriorated. Therefore, by arranging the structure 41 so as to extend to the region including the corners of the pixels, the occurrence of display unevenness can be effectively suppressed.

On the other hand, this form is a form in which the structural body 41 is not disposed between the portions constituted by the color filter overlapping portions 38 of the linear convex portions 40a and 40b, and the wettability of the alignment film liquid agent is caused by this portion. However, when an evaluation test was actually performed, display unevenness did not occur. More specifically, in the form shown in FIG. 48, the interval between the linear convex portions composed of the color filter overlapping portion, the color filter overlapping portion, and the auxiliary protrusion overlapping portion is set to 24 μm. As a result of trial manufacture with an interval between the structures of 10 μm, no display unevenness was observed.

FIG. 49 is a schematic view showing another configuration of the counter substrate of Embodiment 6, wherein (a) is a plan view and (b) is a cross-sectional view taken along line Y1-Y2 in (a). . As shown in FIGS. 49 (a) and 49 (b), the structure 41 has a linear protrusion made up of linear auxiliary protrusions 25 provided at the ends of the pixels. You may arrange | position also between the parts 40a and 40b. This form is particularly suitable when the interval between the linear protrusions 40a and 40b formed by the linear auxiliary protrusions 25 is larger than 12 μm and smaller than 36 μm.

FIG. 50 is a schematic diagram illustrating another configuration of the counter substrate according to the sixth embodiment. FIG. 50A is a plan view, and FIG. 50B is a cross-sectional view taken along line X1-X2 in FIG. . As shown in FIGS. 60A and 60B, when the interval between the linear protrusions 40a and 40b is increased, the width of the structure 41 is preferably increased accordingly. As described above, the distance between the linear protrusions 40a and 40b and the structure 41 is preferably 12 μm or less, and more preferably 10 μm or less.
Thus, according to the present embodiment, the occurrence of display unevenness can be suppressed, and the parasitic capacitance can be reduced because the structure has insulating properties. Further, the amount of liquid crystal material used can be reduced without deteriorating display quality. The manufacturing method of the liquid crystal display panel of the present embodiment is different from the manufacturing method of the liquid crystal display panel of the first embodiment only in the alignment film coating method (a printing method is used instead of the ink jet method), and the description thereof is omitted. To do.

<Embodiment 7>
A liquid crystal display device according to Embodiment 7 will be described. In addition, description and illustration about the content which overlaps with this embodiment and Embodiment 1-6 are abbreviate | omitted.

(Configuration of liquid crystal display element)
As in the first embodiment, two polarizing plates 56a and 56b are bonded to the liquid crystal display panel of this embodiment, and the polarizing axes (absorption axes) of the polarizing plates 56a and 56b are flat with respect to the display panel. When viewed, they are orthogonal to each other.

The image display method of the liquid crystal display element of this embodiment is a TN (Twisted Nematic) method. Therefore, in the liquid crystal display panel of the present embodiment, when a voltage lower than the threshold voltage is applied to the pixel electrode or when no voltage is applied, the liquid crystal is horizontal with respect to the substrate and the polarizing plates 56a and 56b. When viewed from above, each pixel is twisted by 90 ° and oriented. The liquid crystal layer closest to the polarizing plate 56a in the liquid crystal layer is orthogonal to the polarization axis direction of the polarizing plate 56a when viewed in plan, and the liquid crystal positioned closest to the polarizing plate 56b in the liquid crystal layer is viewed in plan. Are oriented so as to be orthogonal to the polarization axis direction of the polarizing plate 56b. On the other hand, when a voltage higher than the threshold voltage is applied to the pixel electrode (liquid crystal layer), the liquid crystal is aligned perpendicular to the substrate and the polarizing plates 56a and 56b. Therefore, in the liquid crystal display panel 107, the incident light polarized by the polarizing plate 56a rotates in the process of passing through the liquid crystal layer, and thus is emitted from the polarizing plate 56b. On the other hand, when a voltage higher than the threshold voltage is applied to the pixel electrode in the liquid crystal display panel of the present embodiment, the incident light polarized by the polarizing plate 56 a passes through the liquid crystal layer in the liquid crystal display panel 102. In this process, since it does not rotate, it is not emitted from the polarizing plate 56b, resulting in a black display. Thus, the liquid crystal display element of this embodiment performs display in normally white mode.

(Configuration of LCD panel)
FIG. 51 is a schematic plan view showing the configuration of the liquid crystal display panel of the seventh embodiment. In the drawing, a region surrounded by a one-dot chain line indicates BM 20, and a region painted in gray indicates the structure 41. FIG. 52 is a schematic sectional view taken along line V1-V2 in FIG. FIG. 53 is a schematic plan view showing the configuration of the counter substrate of the seventh embodiment. As in the first and sixth embodiments, the liquid crystal display panel 107 according to the present embodiment includes a pair of substrates, an active matrix substrate 1 and a counter substrate 2, which are arranged to face each other, as shown in FIGS. And a liquid crystal layer 8 provided between these substrates.

As shown in FIGS. 51 and 52, the active matrix substrate 1 of the present embodiment includes a transparent insulating substrate 10 such as glass and a gate bus line (scanning signal line, formed on the liquid crystal layer 8 side of the insulating substrate 10). Gate wiring) 11, a gate insulating film (not shown) formed on substantially the entire surface of the insulating substrate 10 so as to cover the gate bus line 11, and active transistors such as thin film transistors (TFTs) provided at the corners of each pixel. An element (switching element) 16, a source bus line (data signal line, source wiring) 12 including a source electrode, a drain electrode 37, a source bus line 12, an active element and a drain electrode 37 are covered on the insulating substrate 10. An interlayer insulating film (passivation film) 13 formed on substantially the entire surface, a pixel electrode 14 made of a transparent conductive film or the like on the interlayer insulating film 13, and the liquid crystal layer 8 And a horizontal alignment film 45a provided so as to. The active matrix substrate 1 has a storage capacitor line (auxiliary capacitor line, not shown) formed of the same material as the gate bus line 11.

The pixel electrode 14 is connected to the drain electrode 37 through the contact hole 30 of the interlayer insulating film 13. The pixel electrodes 14 are arranged in a matrix in the display area 3 as shown in FIG. The horizontal alignment film 45a is provided on the surface of the interlayer insulating film 13 and the pixel electrode 14 on the liquid crystal layer 8 side.

The counter substrate 2 of the present embodiment includes a transparent insulating substrate 10 such as glass, a light shielding layer 20, a red color filter 21R, a green color filter 21G, and a blue color filter formed on the liquid crystal layer 8 side of the insulating substrate 10. A color filter layer (CF layer) 22 including 21B, a common electrode (counter electrode) 23 made of a transparent conductive film and the like, and a horizontal alignment film 45b provided so as to be in contact with the liquid crystal layer 8 are provided. Thus, the counter substrate 2 of this embodiment is the same as the counter substrate of Embodiment 6 except that the linear protrusions 24 and the linear auxiliary protrusions 25 are not formed. That is, each color filter 21R, 21G, 21B has a color filter overlapping portion 38 whose end portion partially overlaps BM20.

Therefore, the counter substrate 2 of the present embodiment has linear convex portions 40 a and 40 b that are composed of the color filter overlapping portions 38 and face each other. That is, in the present embodiment, at least one of the active matrix substrate 1 and the counter substrate 2 includes, on the liquid crystal layer 8 side of the insulating substrate 10, the BM 20 having openings in order from the insulating substrate 10 side, and a plurality of color filters (each color Color filters 21R, 21G, and 21B) have a CF layer 22 disposed in the opening of the BM 20, and the CF layer 22 has a plurality of color filters (each color filter 21R, 21G, and 21B) at the ends of the BM 20. The substrate having the color filter overlapping portion 38 that is partially overlapped and having the BM 20 and the CF layer 22 has linear convex portions 40 a and 40 b constituted by the color filter overlapping portion 38. For this reason, as in the sixth embodiment, display unevenness may occur in the prior art. However, the counter substrate 2 has a structure in which the counter substrate 2 is spaced from the linear convex portions 40a and 40b formed by the color filter overlapping portions 38 and disposed between the linear convex portions 40a and 40b when viewed in plan. An object 41 is further included. Thereby, similarly to Embodiment 6, the occurrence of display unevenness can be effectively suppressed. Further, the amount of liquid crystal material used can be reduced without deteriorating display quality. Furthermore, since the structure has an insulating property, the parasitic capacitance can be reduced. The manufacturing method of the liquid crystal display panel of the present embodiment is different from the manufacturing method of the liquid crystal display panel of the first embodiment only in the alignment film coating method (a printing method is used instead of the ink jet method), and the description thereof is omitted. To do.

As described above, according to the present invention, according to the present invention, since the insulating layer (insulating structure) is provided so as to block between the opposing wiring and the common electrode, the parasitic capacitance is effectively reduced. Can be reduced. In addition, it is needless to say that various forms described in the first to seventh embodiments may be used in combination as appropriate.

<Comparison 1>
A liquid crystal display device according to comparative form 1 will be described. In addition, description and illustration about the content which overlaps in this embodiment and Embodiment 1-7 are abbreviate | omitted.

FIG. 64 is a schematic cross-sectional view showing the configuration of the liquid crystal display panel of Comparative Embodiment 1. In the liquid crystal display panel 701 of this comparative embodiment, the interlayer insulating film 13 and the vertical alignment film are disposed between the wiring of the active matrix substrate 1 (source bus line 12, gate lead-out wiring 18, etc.) and the common electrode 23 of the counter substrate 2. Since there is no insulator other than 17a and 17b, the parasitic capacitance between the wiring and the common electrode 23 increases.

2 is a schematic plan view illustrating a configuration of a liquid crystal display element of Embodiment 1. FIG. It is a disassembled perspective schematic diagram which shows the arrangement | positioning relationship between a liquid crystal display panel and two polarizing plates bonded together. 3 is a schematic plan view illustrating the liquid crystal display panel of Embodiment 1. FIG. 2A and 2B are schematic plan views illustrating a configuration of a liquid crystal display panel according to Embodiment 1, in which FIG. 3A illustrates a corner portion of the liquid crystal display panel, and FIG. It is a cross-sectional schematic diagram in the AB line | wire in FIG. 3 is a schematic plan view illustrating a configuration of a corner portion of the active matrix substrate of Embodiment 1. FIG. 3 is a schematic plan view illustrating a configuration of a corner portion of a counter substrate according to Embodiment 1. FIG. 3 is a schematic cross-sectional view showing a linear auxiliary protrusion and an insulating layer of Embodiment 1. FIG. It is a cross-sectional schematic diagram which shows the linear auxiliary | assistant protrusion and insulating layer of a comparison form. It is a cross-sectional schematic diagram which shows the hollow part of the conventional counter substrate. 3 is a schematic cross-sectional view showing a recessed portion of the counter substrate of Embodiment 1. FIG. 6 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. It is a schematic diagram which shows the connection part of the conventional source bus line and source lead-out wiring, (a) is a top view, (b) is sectional drawing in the CD line | wire in (a). It is a schematic diagram which shows the connection part of the source bus line and source lead-out wiring of Embodiment 1, (a) is a top view, (b) is sectional drawing in the EF line | wire in (a). is there. FIG. 4 is another schematic diagram illustrating a connection portion between the source bus line and the source lead-out wiring according to the first embodiment, where (a) is a plan view and (b) is a cross-sectional view taken along line GH in (a). FIG. 6 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. (A) is a plane schematic diagram which shows the liquid crystal display panel of Embodiment 1, (b) is a plane expansion schematic diagram of the area | region enclosed by the circle | round | yen in (a). It is a cross-sectional schematic diagram which shows the edge part of the liquid crystal display panel of Embodiment 1, (a) is sectional drawing in the JK line | wire in Fig.18 (a), (b) and (c) are figures. It is a modification of 19 (a). 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic plan view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic cross-sectional view showing another configuration of the corner of the liquid crystal display panel of Embodiment 1. FIG. 6 is a schematic cross-sectional view illustrating another configuration of the liquid crystal display panel of Embodiment 1. FIG. 3 is a schematic cross-sectional view illustrating a configuration of a liquid crystal display panel of Embodiment 1. FIG. 2 is a schematic plan view illustrating a configuration of a pixel according to Embodiment 1. FIG. It is a block diagram which shows the structure of the display apparatus for television receivers. It is a block diagram which shows the connection relation of the tuner part 70 with which a television receiver is equipped, and a display apparatus. It is a disassembled perspective schematic diagram which shows an example of a mechanical structure when using a display apparatus as a television receiver. 6 is a schematic plan view illustrating a configuration of a liquid crystal display panel of Embodiment 2. FIG. 6 is an enlarged plan view schematically illustrating a configuration of a corner portion of the liquid crystal display panel of Embodiment 2. FIG. 6 is a schematic plan view illustrating a configuration of a liquid crystal display panel of Embodiment 3. FIG. FIG. 6 is a schematic plan view showing a configuration of an active matrix substrate of Embodiment 3. 6 is a schematic plan view illustrating a configuration of a counter substrate according to Embodiment 3. FIG. 6 is a schematic cross-sectional view illustrating a configuration of a liquid crystal display panel of Embodiment 4. FIG. FIG. 10 is a schematic cross-sectional view illustrating a configuration of a liquid crystal display panel of Embodiment 5. FIG. 10 is a schematic plan view illustrating a configuration of a liquid crystal display panel of Embodiment 6. It is a cross-sectional schematic diagram in the Z1-Z2 line | wire in FIG. FIG. 10 is a schematic plan view illustrating a configuration of an active matrix substrate of Embodiment 6. 10 is a schematic plan view illustrating a configuration of a counter substrate according to Embodiment 6. FIG. It is a schematic diagram which shows an APR plate, (a) is a top view, (b) is sectional drawing. FIG. 10 is a schematic cross-sectional view illustrating a configuration in the vicinity of a linear protrusion of a counter substrate according to a sixth embodiment. It is a cross-sectional schematic diagram which shows the structure of the sample (counter substrate) used for the evaluation test. FIG. 10 is a schematic plan view showing another configuration of the counter substrate of Embodiment 6. It is a schematic diagram which shows another structure of the opposing board | substrate of Embodiment 6, (a) is a top view, (b) is sectional drawing in the Y1-Y2 line | wire in (a). It is a schematic diagram which shows another structure of the opposing board | substrate of Embodiment 6, (a) is a top view, (b) is sectional drawing in the X1-X2 line | wire in (a). FIG. 10 is a schematic plan view illustrating a configuration of a liquid crystal display panel of Embodiment 7. It is a cross-sectional schematic diagram in the V1-V2 line | wire in FIG. 10 is a schematic plan view illustrating a configuration of a counter substrate according to Embodiment 7. FIG. It is a cross-sectional schematic diagram which shows the conventional BM and a color filter layer. It is a cross-sectional schematic diagram which shows the state by which the orientation film was apply | coated on the conventional BM and a color filter layer, (a) shows the state in which the application | coating defect of the orientation film generate | occur | produced, (b), the orientation film is normal Shows the state of application. It is a plane schematic diagram which shows the conventional liquid crystal display panel which the display nonuniformity generate | occur | produced. It is a cross-sectional schematic diagram which shows the conventional color filter layer and linear auxiliary | assistant protrusion. It is a cross-sectional schematic diagram which shows the conventional BM, a color filter layer, and a linear auxiliary | assistant protrusion. (A) is a plane schematic diagram which shows the structure of the pixel of the conventional MVA system, (b) is a cross-sectional schematic diagram in the U1-U2 line | wire in (a). It is a cross-sectional schematic diagram which shows the structure of the conventional counter substrate. It is a schematic diagram which shows the structure by the side of CF board | substrate of the liquid crystal display device by one Embodiment as described in patent document 1, (a) is a plane schematic diagram, (b) is S1-S2 in (a). It is sectional drawing in a line. (A) And (b) is a cross-sectional schematic diagram which shows the structure of the conventional board | substrate which has the linear convex part which opposes, and the structure for planarization was formed. It is a plane schematic diagram which shows the structure of the sample (counter substrate) used for the evaluation test. It is a cross-sectional schematic diagram which shows the structure of the liquid crystal display panel of the comparative form 1.

Explanation of symbols

1, 601: Active matrix substrate 2, 602: Counter substrate 3, 603: Display area 4: Non-display area 5: Terminal area 6: Pixel 7a, 7b: Sub-pixel 8, 608: Liquid crystal layer 9: Seals 10, 610: Insulating substrate 11, 611: Gate bus line 12, 612: Source bus line 13, 613: Interlayer insulating film (passivation film)
14, 614: Pixel electrode 15, 615: Electrode slits 16, 16a, 16b, 616: TFT (active element)
17a, 17b, 614a, 614b: vertical alignment film 18: gate lead-out wiring 19: source lead-out wiring 20, 620: light shielding layer (black matrix; BM)
21R, 621R: Red color filter 21G, 621R: Green color filter 21B, 621R: Blue color filter 22, 622: Color filter layer (CF layer)
23, 623: Common electrode (counter electrode)
24, 624: Projection for alignment control (linear projection)
25, 625: auxiliary protrusion for alignment control (linear auxiliary protrusion)
26: Insulating layer 27: Connection layer 28: Recessed portion 29: Wide portions 30, 30a, 30b: Contact hole 31: Slit 32, 632: Gate insulating film 33, 633: Retention capacitance wiring 34a, 34b: Subpixel electrode 35: Conductive foreign material 36: liquid crystal molecule 37: drain electrode (drain lead wiring)
38, 638: Color filter overlapping part 39, 639: Auxiliary protrusion overlapping part 40a, 40b, 640a, 640b: Linear convex part 41: Structure 42: APR plate 43: Dot 44: Alignment film solution 45a, 45b: Horizontal alignment Film 46: Interlayer connection part 50: Gate terminal part 51: Source terminal part 52: Gate driver 53: Source driver 54: Printed wiring board 55: Display control circuit 56a, 56b: Polarizing plate 60: Y / C separation circuit 61: Video Chroma circuit 62: A / D converter 63: Liquid crystal controller 64: Backlight drive circuit 65: Backlight 66: Microcomputer
67: gradation circuit 70: tuner 81: first housing 82: second housing 83: opening 84: operation circuit 85: supporting members 101, 102, 103, 104, 105, 106, 107, 701 : Liquid crystal display panel 200: Liquid crystal display element 300: Display device 690: Stepped portion 691: Planarizing structure 692: Display unevenness 693: Recess L: Distance H1 between the edge of the pixel electrode and the edge of the insulating layer From the upper surface of the color filter overlap portion H 2: Height of the auxiliary protrusion overlap portion from the upper surface of the color filter overlap portion T _CF : Film thickness T _{BM at} the pixel opening of the CF layer W 1: Width of the seal W 1: W2: BM width W3: gap between seal and BM W4: width from the end of the insulating layer to the end of BM

Claims (42)

A liquid crystal display panel comprising a pair of opposing substrates and a liquid crystal layer provided between the substrates,
The liquid crystal display panel has an insulating layer on the liquid crystal layer side of at least one of the substrates,
The insulating layer is disposed in the light shielding region when the substrate is viewed in plan view,
A liquid crystal display panel, wherein the liquid crystal layer has a thickness set in a region where an insulating layer is disposed smaller than a thickness in a pixel opening. The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed in a non-display area when the substrate is viewed in plan. At least one of the substrates has a light shielding layer on the liquid crystal layer side of the insulating substrate,
3. The liquid crystal display panel according to claim 2, wherein the insulating layer is disposed in a region overlapping with a light shielding layer located in the display region when the substrate is viewed in plan. The liquid crystal display panel according to claim 2, wherein the insulating layer is disposed over substantially the entire non-display area when the substrate is viewed in plan. The liquid crystal display panel has a sealing material between the substrates in the non-display area,
The liquid crystal display panel according to claim 2, wherein the insulating layer does not overlap the sealing material. The liquid crystal display panel according to claim 2, wherein the insulating layer has a slit in a non-display area when the substrate is viewed in plan. At least one of the substrates has wiring on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 6, wherein the slit is disposed in a region that does not overlap with the wiring when the substrate is viewed in plan. The liquid crystal display panel according to claim 6, wherein the slit is disposed along a direction in which the liquid crystal flows in the step of injecting or dropping the liquid crystal when the substrate is viewed in plan. The liquid crystal display panel according to claim 6, wherein the slit is disposed in a direction substantially parallel to a contour line of the display region when the substrate is viewed in plan. The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed in a display region when the substrate is viewed in plan. At least one of the substrates has a light shielding layer on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 10, wherein the insulating layer is disposed in a region overlapping a light shielding layer located in the display region when the substrate is viewed in plan. 11. The liquid crystal display panel according to claim 10, wherein the insulating layer is disposed in an area overlapping with a light shielding layer located in a boundary area between pixels arranged in the display area when the substrate is viewed in plan. The liquid crystal display panel according to claim 10, wherein the insulating layer is disposed in substantially the entire light shielding region in the display region when the substrate is viewed in plan. At least one of the substrates has wiring on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 10, wherein the insulating layer is disposed along wirings in substantially the entire display area when the substrate is viewed in plan. The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed at a corner of the pixel when the substrate is viewed in plan. At least one of the substrates has an alignment control protrusion on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 1, wherein the insulating layer is formed integrally with an alignment control protrusion disposed at a corner of the pixel when the substrate is viewed in plan. 17. The liquid crystal display panel according to claim 16, wherein the insulating layer is disposed on a side opposite to the center of the pixel of the alignment control protrusion disposed at the corner of the pixel when the substrate is viewed in plan. . The liquid crystal display panel according to claim 1, wherein the insulating layer is arranged in an island shape when the substrate is viewed in plan. The liquid crystal display panel according to claim 1, wherein the insulating layer includes the same material as any member constituting the substrate having the insulating layer. At least one of the substrates has a color filter layer including a plurality of color filters on the liquid crystal layer side of the insulating substrate,
2. The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed on a substrate having a color filter layer and includes the same material as any one of the color filters. 2. The liquid crystal display panel according to claim 1, wherein at least one of the substrates has an alignment control protrusion and / or an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate. The insulating layer is disposed on at least one substrate having alignment control protrusions and / or alignment control auxiliary protrusions, and includes the same material as the alignment control protrusions and / or alignment control auxiliary protrusions. The liquid crystal display panel according to claim 21, wherein: The insulating layer is disposed on at least one substrate having alignment control protrusions and / or alignment control auxiliary protrusions, and overlaps with the alignment control protrusions and / or alignment control auxiliary protrusions when the substrate is viewed in plan view. The liquid crystal display panel according to claim 21, wherein the liquid crystal display panel is disposed in a non-contiguous region. At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate,
The insulating layer is disposed on at least one substrate having an alignment control auxiliary protrusion, and is disposed with a space between the insulating layer and the alignment control auxiliary protrusion when the substrate is viewed in plan view. The liquid crystal display panel according to claim 1. At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate,
The insulating layer is formed integrally with a root portion of an alignment control auxiliary protrusion disposed at a corner of the pixel,
2. The liquid crystal display panel according to claim 1, wherein the alignment control auxiliary protrusions have a width that decreases from a root portion toward a tip portion when the substrate is viewed in plan view. At least one of the substrates has an alignment control auxiliary protrusion on the liquid crystal layer side of the insulating substrate,
2. The liquid crystal display panel according to claim 1, wherein the insulating layer is formed integrally with a portion other than the tip of the alignment control auxiliary protrusion disposed at a corner of the pixel. At least one of the substrates includes, on the liquid crystal layer side of the insulating substrate, in order from the insulating substrate side, a light shielding layer having an opening, a color filter layer in which a plurality of color filters are arranged in the opening of the light shielding layer, and a light shielding layer And a common electrode provided on substantially the entire surface of the color filter layer, and an insulating layer,
The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed in a region overlapping the light shielding layer when the substrate is viewed in plan. The color filter layer has a thickness larger than the thickness of the light shielding layer,
28. The liquid crystal display panel according to claim 27, wherein the insulating layer has a thickness larger than a step between the light shielding layer and the color filter. One of the substrates has a common electrode on the liquid crystal layer side of the insulating substrate,
The other of the substrates has wiring on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed between the common electrode and the wiring. The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed in a region that does not affect the alignment of the liquid crystal molecules in the pixel region when the substrate is viewed in plan. One of the substrates has a pixel electrode on the liquid crystal layer side of the insulating substrate,
The liquid crystal display panel according to claim 1, wherein the insulating layer is disposed in a region that does not overlap with the pixel electrode when the substrate is viewed in plan. The liquid crystal display panel according to claim 1, wherein the insulating layer has a forward tapered shape when the substrate is viewed in cross section. The liquid crystal display panel according to claim 1, wherein the insulating layer is colored. The liquid crystal display panel according to claim 1, wherein the insulating layer has a light shielding property. A liquid crystal display device comprising the liquid crystal display panel according to claim 1. 36. A liquid crystal display device comprising the liquid crystal display element according to claim 35. A television receiver comprising the liquid crystal display device according to claim 36. A liquid crystal display panel substrate used in a liquid crystal display panel comprising a pair of opposing substrates and a liquid crystal layer provided between the substrates,
The liquid crystal display panel substrate has an insulating layer disposed in a light shielding region when the substrate is viewed in plan. A liquid crystal display panel comprising the liquid crystal display panel substrate according to claim 38. 40. A liquid crystal display element comprising the liquid crystal display panel according to claim 39. 41. A liquid crystal display device comprising the liquid crystal display element according to claim 40. 42. A television receiver comprising the liquid crystal display device according to claim 41.

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