JP2006154599A - Liquid crystal display device, manufacturing method for liquid crystal display device, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which has less display defects due to a multi-gap step, a manufacturing method for a liquid crystal display device, and electronic equipment. <P>SOLUTION: A transflective type liquid crystal display device having a display region including a plurality of pixels having reflection region and transmission regions, is characterized in that: the reflection regions and transmission regions are arranged in stripes across pixel arrays of pixels arrayed in the display region in one direction; a 1st substrate has thick layer portions arranged in the reflection regions and thin layer portions arranged in the transmission regions, and also has step portions formed having oblique surfaces on borders between the thick layer portions and thin layer portions in the display region and layer thickness regulating layers having specified relaxation portions outside the display region; and 1st electrodes are formed on the layer thickness regulating layers and extended to outside the display regions respectively, and at least, 1st electrodes formed in reflection regions and transmission regions of the same pixel array are connected on relaxation portions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a liquid crystal display device, a method for manufacturing a liquid crystal display device, and an electronic apparatus. In particular, the present invention relates to a liquid crystal display device in which display defects due to multi-gap steps are reduced, a method for manufacturing the liquid crystal display device, and an electronic apparatus including such a liquid crystal display device.

Conventionally, as an image display device, a pair of substrates each having an electrode formed thereon are arranged opposite to each other, and a voltage applied to a plurality of pixels that are intersecting regions of the respective electrodes is selectively turned on and off, whereby the pixel A liquid crystal display device that modulates light passing through a liquid crystal material in a region and displays an image such as an image or a character is often used.
As such a liquid crystal display device, there is a transflective liquid crystal display device capable of reflective display and transmissive display. That is, in the transmissive region, the light emitted from the backlight disposed on the back side of the substrate enters the liquid crystal panel and passes through the liquid crystal material layer and is visually recognized outside. On the other hand, in the reflection region, external light incident on the liquid crystal panel from the outside passes through the liquid crystal material layer, is reflected by the light reflecting film, and passes through the liquid crystal material layer again to be visually recognized outside. By providing such a transmissive region and a reflective region, in the daytime and bright places,
Since the image display can be recognized by using outside light such as sunlight, the power consumption can be reduced, and the image display can be recognized by the backlight even in a relatively dark place such as at night. be able to.

In such a transflective liquid crystal display device, a liquid crystal display device provided with a so-called multi-gap has been proposed in order to improve color development in each of the reflective display and the transmissive display and to optimize the retardation. . More specifically, as shown in FIG. 23, a light reflection layer 604 that defines a reflection region 631 and a transmission region 632 is formed in the pixel 603, and an area corresponding to the transmission region 632 is formed on the upper layer side thereof. Layer thickness adjusting layer 606 serving as an opening
Is a transflective liquid crystal display device (see, for example, Patent Document 1).
JP 2003-270627 A (Claims, FIG. 1)

However, in the liquid crystal display device provided with the multi-gap described in Patent Document 1, the step portion of the layer thickness adjusting layer corresponding to the boundary portion between the reflective region and the transmissive region is retardation in both the reflective region and the transmissive region. Because of the difference, it was a cause of display failure.
In addition, the stepped wall of the stepped portion is generally an inclined surface because the steeper angle formed with the substrate surface decreases the adhesion of electrodes and the like formed on the stepped portion. Therefore,
When the substrate surface is viewed from the vertical direction, the step portion has a predetermined width, and the region corresponding to the step portion becomes a display failure region, and as a result, display characteristics such as contrast deteriorate. It was observed.

Accordingly, the inventors of the present invention have made diligent efforts, and in the multi-gap type liquid crystal display device, a layer thickness adjusting layer for making the thickness of the liquid crystal material layer different in the reflective region and the transmissive region,
It is found that such problems can be solved by forming a stripe shape in a predetermined direction in the display region, and ensuring the conductivity in the display region with the electrode formed in the upper layer of the layer thickness adjusting layer, The present invention has been completed.
That is, the present invention forms a steep step at the boundary between the reflective region and the transmissive region in the display region, and secures electrical continuity of the electrodes outside the display region, so that the reflective region in one pixel and An object of the present invention is to provide a liquid crystal display device in which display characteristics are improved by reducing the area of a display defect region while ensuring the conductivity of electrodes formed in a transmissive region. Another object of the present invention is to provide a method for manufacturing such a liquid crystal display device and an electronic apparatus including such a liquid crystal display device.

According to the present invention, a first substrate having a first electrode, a second substrate having a second electrode, and a liquid crystal sandwiched between the first substrate and the second substrate. A transflective liquid crystal display device including a display region including a plurality of pixels each having a reflective region and a transmissive region.
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of pixels arranged in one direction in the display region,
The first substrate is a layer thickness adjusting layer having a layer thickness portion disposed in the reflection region and a thin layer portion disposed in the transmission region in order to adjust retardation in the reflection region and the transmission region. In the display area, it has a stepped part in which the inclined surface of the boundary between the layer thick part and the layer thin part is formed in the vertical direction, and outside the display area, the step at the boundary between the layer thick part and the layer thin part is reduced. A layer thickness adjusting layer having a relaxation portion for
The first electrode is formed in the upper layer of the layer thickness adjustment layer so as to extend over the pixel columns, and extends to the outside of the display region, and is formed in at least the reflection region and the transmission region in the same pixel column. A liquid crystal display device characterized in that the first electrode is connected on the relaxation portion can solve the above-described problems.
That is, in the display area, the inclined surface at the boundary between the layer thickness portion and the layer thin portion is formed steeply, and the width of the step at the boundary between the layer thickness portion and the layer thin portion when viewed perpendicular to the substrate surface is set. By reducing the size, the area of the display defect region can be reduced. In addition, outside the display region, the first electrode formed in the reflective region and the transmissive region in the same pixel column is prevented by preventing disconnection of the first electrode due to the step between the layer thickness portion and the layer thin portion. The electrical continuity of can be ensured. Therefore, the area of the display defect region is reduced while ensuring the conductivity of the first electrode existing in one pixel regardless of whether the first electrode is disconnected or the like due to the step portion in the display region. Thus, a liquid crystal display device with improved display characteristics can be provided efficiently.

In configuring the liquid crystal display device of the present invention, when the inclined surface in the display area is the first inclined surface, the relaxing portion is gentler than the angle formed by the first inclined surface and the substrate surface. Second
It is preferable that the inclined surface is included.
By configuring in this way, in the display area, the width of the step at the boundary between the layer thickness part and the layer thin part when viewed perpendicularly to the substrate surface is reduced, and the area of the display defect area is reduced. In addition, outside the display region, it is possible to effectively prevent disconnection of the first electrode formed on the inclined surface in the relaxing portion, and to ensure electrical conductivity.
The angle formed between the inclined surface and the substrate surface refers to an angle determined within a range of 0 to 90 ° out of two angles θA and θB formed between the inclined surface and the substrate surface shown in FIG. Therefore, FIG.
In a), it means θB, and in FIG. 8B, it means θA.

Further, in configuring the liquid crystal display device of the present invention, it is preferable that the relaxing portion includes a plurality of steps connecting the layer thickness portion and the layer thin portion.
With this configuration, the height of each step included in the relaxing portion can be reduced, and disconnection of the first electrode formed on the relaxing portion can be effectively prevented.

Another embodiment of the present invention includes a first substrate including a first electrode, a second substrate including a second electrode, and a gap between the first substrate and the second substrate. A transflective liquid crystal display device including a display region including a plurality of pixels each having a reflective region and a transmissive region.
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of pixels arranged in one direction in the display region,
The first substrate is a layer thickness adjusting layer having a layer thickness portion disposed in the reflection region and a thin layer portion disposed in the transmission region in order to adjust retardation in the reflection region and the transmission region. A layer thickness adjusting layer including a stepped portion formed in a vertical direction with an inclined surface at the boundary between the layer thickness portion and the layer thin portion in the display region,
The first electrode is formed on the upper layer thickness adjustment layer so as to straddle the pixel columns, and extends to the outside of the display area,
A liquid crystal display device, wherein a conductive member is disposed across a portion of the first electrode formed in at least the reflective region and the transmissive region of the same pixel column and extending beyond the display region. .
That is, in the display area, the area of the display defect area can be reduced by reducing the width of the step at the boundary between the layer thickness part and the layer thin part when viewed perpendicularly to the substrate surface. In addition, outside the display region, electrical conduction between the first electrodes formed in the reflective region and the transmissive region in the same pixel row is performed by a predetermined conductive member disposed over the extended first electrode. Sex can be secured. Therefore, a liquid crystal display device in which the area of the display failure region is reduced while ensuring the conductivity of the first electrode in one pixel regardless of whether or not the first electrode is disconnected due to the stepped portion in the display region. Can be provided efficiently.

Further, in configuring the liquid crystal display device of the present invention, it is preferable that the angle formed between the inclined surface and the substrate surface in the display region is set to a value in the range of 60 to 90 °.
With this configuration, the width of the step at the boundary between the layer thickness portion and the layer thin portion when viewed perpendicularly to the substrate surface in the display region can be reduced, and the area of the display failure region can be reduced. be able to.

In configuring the liquid crystal display device of the present invention, it is preferable that the first electrode in the reflective region and the transmissive region are electrically connected on both sides of the display region.
With this configuration, the electrical continuity of the first electrode in the reflective region and the transmissive region formed across the pixel column composed of pixels arranged in one direction in the display region is more reliably ensured. Can be secured.

In configuring the liquid crystal display device of the present invention, it is preferable that a slit is provided at a position corresponding to a step portion in the pixel in the first electrode.
With such a configuration, the step portion at the boundary between the layer thickness portion and the layer thin portion in the display region can be made a non-electric field region, and display defects can be prevented more reliably.

In configuring the liquid crystal display device of the present invention, the second substrate is a TFD element or TF.
An element substrate provided with a T element is preferable.
With this configuration, in any liquid crystal display device including any switching element, the conductivity of the first electrode formed in the reflective region and the transmissive region in one pixel in the display region is ensured. Thus, a liquid crystal display device in which the area of a display defect region due to a multi-gap formed on the counter substrate is reduced can be obtained.

Another embodiment of the present invention includes a first substrate including a first electrode, a second substrate including a second electrode, and a gap between the first substrate and the second substrate. A display region including a plurality of pixels each having a reflective region and a transmissive region, and the reflective region and the transmissive region are pixels composed of pixels arranged in one direction in the display region. A method of manufacturing a liquid crystal display device arranged in stripes across columns,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust the retardation in the reflective region and the transmissive region, a layer thickness adjusting layer in which a layer thickness portion is disposed in the reflective region and a thin layer portion is disposed in the transmissive region. A layer thickness adjusting layer having a step portion in which the inclined surface at the boundary of the thin layer portion is formed in the vertical direction and having a relaxation portion for relaxing the step difference at the boundary between the layer thickness portion and the thin layer portion outside the display region Forming a step;
A first electrode that extends over the pixel column and extends to the outside of the display region on the upper layer of the layer thickness adjusting layer, and is formed in at least the reflective region and the transmissive region in the same pixel column Forming a first electrode so that the first electrode in the reflective region and the transmissive region is connected on the relaxation portion;
A method for manufacturing a liquid crystal display device.
That is, when forming a layer thickness adjusting layer having a layer thickness portion and a layer thin portion for forming a multi-gap, the inclined surface at the boundary between the layer thickness portion and the layer thin portion is set in the vertical direction in the display region. Thus, the area of the display defect region can be reduced. In addition, when the layer thickness adjusting layer is formed, outside the display region, by forming a relaxation portion that relaxes the step at the boundary between the layer thickness portion and the layer thin portion, the electrode on the layer thickness portion and the layer thickness are reduced. Electrical continuity with the electrode on the part can be ensured. Therefore, it is possible to efficiently manufacture a liquid crystal display device having excellent display characteristics while preventing malfunction due to disconnection or the like.

Another embodiment of the present invention includes a first substrate including a first electrode, a second substrate including a second electrode, and a gap between the first substrate and the second substrate. A display region including a plurality of pixels each having a reflective region and a transmissive region, and the reflective region and the transmissive region are pixels composed of pixels arranged in one direction in the display region. A method of manufacturing a liquid crystal display device arranged in stripes across columns,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust the retardation in the reflective region and the transmissive region, a layer thickness adjustment layer in which a layer thickness portion is disposed in the reflective region and a thin layer portion is disposed in the transmissive region. Forming a layer thickness adjusting layer having a stepped portion in which the inclined surface of the boundary of the thin layer portion is formed in the vertical direction;
The upper layer thickness adjustment layer extends over the pixel column and extends to the outside of the display area.
Forming an electrode of
A step of disposing a conductive member across a portion extending to the outside of the display region in the first electrode formed in the reflective region and the transmissive region of at least the same pixel row;
A method for manufacturing a liquid crystal display device.
That is, when forming a layer thickness adjustment layer having a layer thickness portion and a layer thin portion for forming a multi-gap, an inclined surface at the boundary between the layer thickness portion and the layer thin portion is formed in the vertical direction in the display region. By forming, the area of the display defect region can be reduced. Further, by disposing a predetermined conducting member outside the display area, it is possible to ensure the electrical continuity of these electrodes. Therefore, it is possible to efficiently manufacture a liquid crystal display device having excellent display characteristics while preventing malfunction due to disconnection or the like.

Still another embodiment of the present invention is an electronic apparatus including any one of the liquid crystal display devices described above.
In other words, an electronic device with improved display characteristics is provided in order to provide a liquid crystal display device in which the display defect area is reduced while ensuring the conductivity of the first electrode formed in the reflective area and the transmissive area in one pixel. Can be provided efficiently.

Hereinafter, with reference to the drawings, embodiments of the liquid crystal display device of the present invention, a method for manufacturing the liquid crystal display device, and an electronic apparatus including the liquid crystal display device will be specifically described. However, this embodiment shows one aspect of the present invention and does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

[First Embodiment]
In the first embodiment, a first substrate having a first electrode, a second substrate having a second electrode, and a liquid crystal sandwiched between the first substrate and the second substrate A transflective liquid crystal display device including a display region including a plurality of pixels each having a reflective region and a transmissive region.
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of pixels arranged in one direction in the display region, and the first substrate adjusts retardation in the reflective region and the transmissive region. And a layer thickness adjusting layer having a layer thickness portion disposed in the reflection region and a layer thin portion disposed in the transmission region, wherein the boundary between the layer thickness portion and the layer thin portion is present in the display region. A step portion having an inclined surface formed in a vertical direction, and a layer thickness adjusting layer having a relaxation portion for relaxing a step at a boundary between the layer thickness portion and the layer thin portion outside the display region, The electrodes are formed on the upper layer of the layer thickness adjusting layer so as to extend over the pixel columns, and extend to the outside of the display region, respectively, and are formed at least in the reflection region and the transmission region in the same pixel column. The electrode is loose Characterized in that connected on the parts.
Hereinafter, with reference to FIGS. 1 to 14 as appropriate, for the liquid crystal display device according to the first embodiment of the present invention, a color filter substrate having a predetermined layer thickness adjusting layer and TF as a switching element.
A liquid crystal display device including an element substrate provided with a D element (Thin Film Diode) will be described as an example. In addition, in each figure, what attached | subjected the same code | symbol has shown the same member, and abbreviate | omits description suitably.

1. Basic Structure of Liquid Crystal Display First, referring to FIG. 1 and FIG. 2, the basic structure of the liquid crystal display device 10 as the liquid crystal display device of the first embodiment according to the present invention, that is, the cell structure, wiring, etc. are specifically described. Explained. Here, FIG. 1 is a schematic perspective view of the liquid crystal display device 10 according to the present embodiment, and FIG. 2 is a schematic cross-sectional view of the EE cross section in FIG.
The liquid crystal display device 10 includes a TF that is a two-terminal nonlinear element as a switching element.
Although it is the liquid crystal display device 10 provided with the element substrate 60 which has the active matrix type structure using the D element 69, and is not shown in figure, illumination apparatuses, a case body, etc., such as a backlight and a front light, are suitably used as needed. Installed and used.
Further, in the liquid crystal display device 10, an element substrate 60 having a glass substrate or the like as a base 61 and a color filter substrate 30 similarly having a glass substrate or the like as a base 31 are disposed opposite to each other and a sealing material 23 such as an adhesive. It is pasted through. Further, it is a space formed by the element substrate 60 and the color filter substrate 30, and has an opening 23 with respect to the inner portion of the sealing material 23.
After the liquid crystal material 21 is injected through a, a cell structure is provided that is sealed with a sealing material 25. That is, the liquid crystal material 21 is filled between the element substrate 60 and the color filter substrate 30.

Further, a plurality of pixel electrodes 63 arranged in a matrix are formed on the inner surface of the base 61 in the element substrate 60, that is, the surface facing the color filter substrate 30, and the inner surface of the base 31 in the color filter substrate 30, On the surface facing the element substrate 60,
A plurality of scanning electrodes 33 arranged in a stripe shape are formed. The pixel electrode 63 is electrically connected to the data line 65 via a TFD element 69 as a switching element, and the other scanning electrode 33 is connected via a sealing material 23 containing conductive particles. It is electrically connected to the lead wiring 66 on the element substrate 60. The pixel electrode 63 and the scanning electrode 33 configured in this way constitute a large number of pixels (hereinafter sometimes referred to as a pixel region) in which the intersecting regions of the scanning electrodes 33 are arranged in a matrix, and the array of the large number of pixels is The display area is configured as a whole. Therefore, by applying a voltage to a desired pixel, an electric field can be generated in the liquid crystal material 21 of the pixel, and an image such as characters and figures can be displayed over the entire display region.

The element substrate 60 has a substrate overhanging portion 60T that projects outward from the outer shape of the color filter substrate 30, and a part of the data line 65 and the routing wiring 66 are formed on the substrate overhanging portion 60T. And an external connection terminal 67 made up of a plurality of wirings formed independently.
A driving semiconductor element (driving IC) 91 incorporating a liquid crystal driving circuit or the like is mounted at the end of the data line 65 or the routing wiring 66. Furthermore, a driving semiconductor element (driving IC) 91 is mounted on the end of the external connection terminal 67 on the display area side, and a flexible circuit board 93 is mounted on the other end. ing.

2. Reflective region and transmissive region Further, the liquid crystal display device according to the present invention is a transflective liquid crystal display device, and the reflective region and the transmissive region are arranged in a pixel column composed of pixels arranged in one direction in the display region. It is arranged in a striped manner. That is, in the case of the liquid crystal display device including the TFD element according to this embodiment, as shown in FIGS. 3A to 3B, the liquid crystal display device is arranged along the direction (X direction) orthogonal to the data line on the element substrate. The reflective regions R and the transmissive regions T are alternately arranged in a stripe pattern for each of a plurality of pixel columns including the pixels G. 3 and 4 are partially enlarged views when the liquid crystal display device is viewed in a direction perpendicular to the display surface.
Here, in FIG. 3A, in each pixel G, the transmissive region T is disposed in the upper half and the reflective region R is disposed in the lower half, so that the transmissive region T and the reflective region R are striped as a whole. Is arranged. Further, in FIG. 3B, in each pixel G, a reflective region R is disposed at the upper and lower portions, and a transmissive region T is disposed at the center so as to be sandwiched between the reflective regions R. The region T and the reflection region R are arranged in a stripe shape.
The reflection region R and the transmission region T are arranged in a desired region by providing a light reflection film having an opening corresponding to the transmission region T in either the color filter substrate or the element substrate. Can do. Note that the liquid crystal display device described in this embodiment is a liquid crystal display device in which a light reflecting film is formed on the color filter substrate side.

Further, in arranging the reflective region and the transmissive region, as shown in FIG.
It is preferable to arrange the reflection region R on the sides facing each other. For example, FIG.
), A pixel G in which a transmission region T is arranged in the upper half and a reflection region R is arranged in the lower half;
The pixels G in which the reflection regions R are arranged in the upper half and the transmission regions T are arranged in the lower half are alternately arranged for each row.
This is because even when a multi-gap is formed, a step that causes a display defect in one pixel can be reduced.

3. Color Filter Substrate (1) Basic Configuration Next, the color filter substrate 30 used in the liquid crystal display device 10 of the present embodiment will be described in more detail with reference to FIGS.
5A is a plan view of the color filter substrate 30, FIG. 5B is a cross-sectional view of the PP cross section in FIG. 5A in the direction of the arrow, and FIG. Sectional drawing which looked at OO cross section in (a) in the arrow direction is shown. As shown in FIG. 5B, the color filter substrate 30 basically has a light reflecting film 35, a light shielding film 39, a colored layer 37, and a layer thickness adjustment on a base 31 made of a glass substrate or the like. The layer 40 and the scanning electrode 33 are sequentially stacked. Further, an alignment film 45 for controlling the orientation of the liquid crystal material is provided on the scan electrode 33, and a clear image display is recognized on the surface opposite to the surface on which the scan electrode 33 and the like are formed. A retardation plate (¼ wavelength plate) 47 and a polarizing plate 49 are arranged so as to be able to do so.

(2) Light Reflecting Film Further, the light reflecting film 35 formed on the color filter substrate 30 is made of, for example, a metal material such as aluminum, and has an opening 35a corresponding to the transmission region T. In the region R, it is a member for reflecting external light such as sunlight to enable reflective display. In the liquid crystal display device of the present invention, since the reflection region R is arranged across the pixel column composed of pixels arranged in one direction in the display region, the light reflection film 35 is formed, for example, as shown in FIG. ) To (c).
6A shows the light reflecting film 35 in the color filter substrate in which the reflection region R and the transmission region T are arranged as shown in FIG. 3A, and FIG. 6B shows the light reflection film 35 in FIG. As shown in FIG. 6, the light reflecting film 35 in the color filter substrate on which the reflective region R and the transmissive region T are arranged is shown in FIG.
FIG. 4C shows the light reflecting film 35 on the color filter substrate on which the reflective region R and the transmissive region T are arranged as shown in FIG.

(3) Light-shielding film The light-shielding film 39 is a film for preventing color materials from being mixed between adjacent pixels G and obtaining an image display with excellent contrast. As such a light shielding film 39, for example, a metal film such as chromium (Cr) or molybdenum (Mo) is used as the light shielding film 39, or R (red), G (green), and B (blue). A material in which three colorants are dispersed in a resin or other base material, or a material in which a colorant such as a black pigment or dye is dispersed in a resin or other base material can be used. Further, the light shielding film can be formed by superposing three colorants of R (red), G (green), and B (blue).

(4) Colored layer In addition, the colored layer 37 is usually configured to exhibit a predetermined color tone by dispersing a coloring material such as a pigment or a dye in a transparent resin. An example of the color tone of the colored layer 37 is R as a primary color filter.
(Red), G (Green), and B (Blue) are composed of a combination of three colors, but are not limited to this, such as Y (Yellow), M (Magenta), C (Cyan), etc. A complementary color system or other various color tones can be formed.
Further, as the arrangement pattern of the colored layer 37, a stripe arrangement is often adopted,
In addition to the stripe arrangement, various pattern shapes such as an oblique mosaic arrangement and a delta arrangement can be employed.

(5) Layer Thickness Adjustment Layer In the liquid crystal display device 10 according to the present embodiment, on the color filter substrate 30,
A layer thickness adjusting layer 40 made of an organic photosensitive resin material such as an acrylic resin or an epoxy resin, or an inorganic material such as SiN or SiO ₂ is formed. Then, as shown in FIGS. 5B to 5C, the layer thickness adjusting layer 40 includes a layer thickness portion 40 a disposed in the reflection region R, and a transmission region T.
In the display region A, the inclined surface 40c is formed in the vertical direction at the step at the boundary between the layer thickness portion 40a and the layer thin portion 40b. And the layer thickness portion 40a and the layer thin portion 40b outside the display area.
It has the relief | moderation part 11 which eases the level | step difference of a boundary of this.
That is, in order to optimize the retardation in the reflective region and the transmissive region, a liquid crystal display device having a multi-gap structure in which the thickness of the reflective region in the liquid crystal material layer is relatively thin and the layer thickness of the transmissive region is large is displayed. In the region, the width of the step at the boundary between the layer thickness portion and the layer thin portion of the layer thickness adjusting layer as viewed from the direction perpendicular to the substrate surface is reduced. On the other hand, outside the display area, a relaxation portion is formed to prevent disconnection of the scan electrode formed on the step at the boundary between the layer thickness portion and the layer thin portion of the layer thickness adjusting layer, and reflection in one pixel is performed. The scanning electrode formed in the region and the transmission region is configured to ensure electrical continuity.
Accordingly, a liquid crystal display device having excellent display characteristics, which can prevent malfunction due to disconnection of the scan electrode and can optimize the retardation in each of the reflective region and the transmissive region while reducing the area of the display defective region due to the step. can do.

More specifically, a conventional layer thickness adjusting layer for forming a multi-gap is shown in FIG.
As shown in FIG. 6, the inclination angle at the step 660 at the boundary between the layer thickness portion disposed in the reflection region R and the layer thin portion disposed in the transmission region T in the display region is formed to be relatively gentle. .
This is because if the inclined surface at such a step is formed vertically, a scan electrode formed on the step portion may be poorly formed and disconnection may occur. However, since the stepped portion does not match the retardation in any of the reflective region and the transmissive region, in this case, as shown in FIG. The area of the corresponding region is relatively large, and the area of the display defect region 13 is large.
On the other hand, in the liquid crystal display device according to the present invention, as shown in FIG. 7B, the inclined surface at the step between the layer thickness portion and the layer thin portion is formed in the vertical direction in the display region. In addition, the area of the region corresponding to the inclined surface viewed from the direction perpendicular to the substrate surface is relatively small, and the area of the display defect region 13 can be reduced.

Thus, in order to reduce the width of the step at the boundary between the layer thickness portion and the layer thin portion as viewed from the direction perpendicular to the substrate surface, the angle between the inclined surface and the substrate surface in the step is set to 60 to 90 °. A value within the range is preferable.
The reason for this is that when the angle is less than 60 °, although depending on the thickness of the layer thickness adjusting layer, the width of the inclined surface when viewed from the direction perpendicular to the substrate surface becomes relatively large, resulting in poor display This is because the area of the region may increase. On the other hand, if this angle is vertical (90 °),
This is because the width of the inclined surface viewed from the direction perpendicular to the substrate surface can be set to 0, so that the area of the display defect region can be minimized. However, such a step is generally formed by multiple exposure or halftone exposure of the photosensitive resin material, and there is a slight wraparound of the light passing through the photomask, so the reproducibility may be poor.
Therefore, it is more preferable that the angle formed between the inclined surface at the step between the layer thickness portion and the layer thin portion and the substrate surface is a value within a range of 70 to 88 °, and a value within a range of 80 to 85 °. More preferably.
The angle formed between the inclined surface and the substrate surface refers to an angle determined within a range of 0 to 90 ° out of two angles θA and θB formed between the inclined surface and the substrate surface shown in FIG. Therefore, FIG.
In a), it means θB, and in FIG. 8B, it means θA.

However, when the inclined surface at the step of the boundary between the layer thickness portion and the layer thin portion is formed in the vertical direction, when the scanning electrode is formed in the upper layer of the layer thickness adjustment layer in the manufacturing stage, the electrode is applied to the step portion. May not be formed uniformly. In this case, for example, the scanning electrode in the reflection region and the scanning electrode in the transmission region in one pixel are in a discontinuous state, and electrical continuity cannot be ensured, resulting in malfunction.
Therefore, as shown in FIG. 5A, outside the display area A, the layer thickness portion 40a and the layer thin portion 4
By forming the relaxing portion 11 that relaxes the step difference at the boundary of 0b, the electrical continuity between the scanning electrode 33a in the reflective region and the scanning electrode 33b in the transmissive region in one pixel is reduced.
Therefore, it is possible to prevent malfunction due to disconnection of the scanning electrode 33. That is, in one pixel, for example, even when the scan electrode in the reflective region and the scan electrode in the transmissive region are not connected at all, the electrical continuity between the scan electrode in the reflective region and the transmissive region is outside the display region. Therefore, a voltage can be applied to each of the reflective region and the transmissive region in one pixel.

As such a relaxing portion, for example, as shown in FIG. 9A, when the inclined surface in the display area A is the first inclined surface 17, the angle formed by the first inclined surface 17 and the substrate surface. The relaxing part 11 can include the second inclined surface 18 that is gentler than θ2. That is, as the inclined surface at the step at the boundary between the layer thickness portion and the layer thin portion becomes steeper, the transparent electrode formed at the step portion is poorly formed, and disconnection is likely to occur. Therefore, the inclined surface at the step at the boundary between the layer thickness portion and the layer thin portion outside the display region is formed more gently than the step in the display region, thereby forming the reflection region and the transmission region in one pixel. The electrical continuity of the electrode can be ensured outside the display area.
However, if the inclined surface becomes excessively gentle, the area of a so-called frame region outside the display region may be increased. Therefore, it is preferable that the angle formed between the inclined surface at the step between the layer thickness portion and the layer thin portion outside the display region and the substrate surface is a value within a range of less than 30 to 60 °, and 40 to 50 °. It is more preferable to set the value within the range.

Moreover, as another example of the relaxation portion, for example, as shown in FIG.
It can be set as the relaxation part 11 containing the several level | step difference 12 which connects a and the layer thin part 40b. That is, if the difference in level of the step between the layer thickness part and the layer thin part outside the display area is larger than the value of the film thickness of the electrode, formation failure occurs when the electrode is formed in the step part. The possibility of disconnection increases. Therefore, by forming the step at the boundary between the layer thickness portion and the layer thin portion outside the display area so as to include a plurality of steps, the height difference of each step is reduced and the disconnection of the electrode is prevented. be able to.
Therefore, for example, when the film thickness of the scan electrode is about 50 nm, the height difference of each of the plurality of steps included in the relaxing portion that relaxes the step at the boundary between the layer thickness portion and the layer thin portion outside the display region is A value in the range of 30 to 60 nm is preferable.

Further, as shown in FIG. 10A, the relaxing part 11 is placed outside one of the display areas A,
For example, the layer thickness portion 4 of the layer thickness adjusting layer 40 is formed on the side that is electrically connected to the lead wiring on the element substrate.
Since the scanning electrode 33a on 0a and the scanning electrode 33b on the thin layer portion 40b have electrical continuity, temporary electrical continuity can be ensured. However, since the electrical continuity of the scanning electrodes 33a and 33b can be ensured more reliably, it is preferable that the relaxing portions 11 are formed on both sides of the display area A as shown in FIG.

In order to optimize the retardation, in order to make the reflective region thinner than the transmissive region in the liquid crystal material layer, as described above, the layer thickness portion corresponding to the reflective region and the layer thin portion corresponding to the transmissive region are used. 12, the layer thickness adjusting layer 40 can be formed only corresponding to the reflective region R as shown in FIG. In this case,
The inclined surface 15 at the level difference corresponding to the end of the layer thickness adjusting layer 40 is formed in the vertical direction in the display area A. For example, the inclined surface 15 in the display area A and the substrate surface outside the display area A. Therefore, the relaxing part 11 including the inclined surface 18 that is gentler than the angle between the two and the like is provided.
Further, examples of the relaxing portion are not limited to the above-described embodiment, and any other means can be used as long as it can secure electrical conductivity between the scanning electrode on the layer thickness portion and the scanning electrode on the layer thin portion. It may be an aspect.

(6) Scan Electrode Further, a scan electrode 33 made of a transparent conductor such as ITO (Indium Tin Oxide) is formed on the layer thickness adjusting layer 40. The scanning electrode 33 is formed in a stripe shape in which a plurality of transparent electrodes 33 are arranged in parallel for each pixel column composed of pixels arranged in one direction.
Here, in the liquid crystal display device of the present embodiment, the boundary between the layer thickness portion 40 a and the layer thickness portion 40 b of the layer thickness adjusting layer 40 formed corresponding to the reflective region R and the transmissive region T in the display region A. The inclined surfaces at the steps are formed in the vertical direction. Therefore, the scanning electrode 33a in the reflection region R and the scanning electrode 33b in the transmission region T in one pixel may not be formed continuously.
However, outside the display area, scanning electrodes formed in the reflective area and the transmissive area in the same pixel column are extended so that the reflective area and the transmissive area are on the relief portion of the step between the layer thickness part and the layer thin part. Since the scan electrodes in the region are connected, electrical continuity is ensured even when the scan electrodes are discontinuous in one pixel.
Therefore, even when the scan electrode is formed on the step including the inclined surface formed in the vertical direction in the display region, it is possible to prevent the occurrence of malfunction due to disconnection or the like.

Further, in order to ensure the electrical continuity of the scanning electrodes in the reflective region and the transmissive region in one pixel outside the display region, the conductive electrode is electrically connected to one side of the display region, for example, the lead wiring on the element substrate. On the other hand, the electrical conductivity of the scanning electrodes on the layer thickness portion and the layer thin portion of the layer thickness adjusting layer is ensured, so that a temporary electrical conductivity can be ensured. However, since the electrical conductivity of the scan electrode can be ensured more reliably, the electrical conductivity of the scan electrode on the layer thickness adjustment layer and the layer thin portion of the layer thickness adjusting layer is taken on both sides of the display region. Is preferred.

Further, as shown in FIG. 13, in the scanning electrode 33, in each pixel in the display area A, a step at the boundary between the layer thickness portion 40a and the layer thin portion 40b of the layer thickness adjusting layer 40 (first inclined surface 1).
It is preferable that a slit 34 is provided at a position corresponding to 7).
The reason for this is that by forming the non-electric field region without forming the scanning electrode on the inclined surface that causes display failure, it is possible to reduce the occurrence of display failure without transmitting light to the portion. is there.
In the liquid crystal display device according to the present embodiment, since the scanning electrodes in the reflective region and the transmissive region in one pixel ensure electrical conductivity outside the display region, such slits are provided. Even in this case, no malfunction occurs.

(7) Alignment Film An alignment film 45 made of polyimide resin or the like is formed on the entire surface of the scan electrode 33. Such an alignment film is a member for controlling the alignment of the liquid crystal material by performing a rubbing process or the like.

4). Element Substrate (1) Basic Configuration In addition, as shown in FIGS. 14A to 14B, the element substrate 60 basically includes a base 61 made of a glass substrate, a data line 65, and a switching element. A TFD element 69 and a pixel electrode 63 are included. In addition, an alignment film 75 made of polyimide resin or the like is formed on the pixel electrode 63. Further, a retardation plate (¼ wavelength plate) 77 and a polarizing plate 79 are disposed on the outer surface of the base 61.
14A is a schematic plan view of the element substrate 60, and FIG. 14B is a schematic cross-sectional view of the element substrate 60. Further, the alignment film, the polarizing plate and the like are omitted as appropriate.

(2) Data line and routing wiring The data line 65 on the element substrate 60 is formed in a stripe shape in which a plurality of wirings are arranged in parallel. Although not shown, the side extending in the direction perpendicular to the side on the mounting area side of the driver or the like is electrically connected to the scanning electrode 33 on the color filter substrate 30 via a sealing material containing conductive particles. Routed wiring is provided.
Since the data line 65 and the lead wiring are formed simultaneously with the formation of a two-terminal non-linear element described later from the viewpoint of simplifying the manufacturing process and lowering the electrical resistance, for example, a tantalum layer, a tantalum oxide layer, And a chrome layer are sequentially formed.

(3) Pixel Electrode Further, the pixel electrode 63 is electrically connected to each data line 65 via the switching element 69. The pixel electrodes 63 are arranged in a matrix between the data lines 65.
The pixel electrode 63 can be formed using a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide).

(4) Switching Element A TFD element 69 as a switching element 69 that electrically connects the data line 65 and the pixel electrode 63 is formed on the element substrate 60. The TFD element 69 generally includes an element first electrode 71 made of a tantalum (Ta) alloy, an insulating film 72 made of tantalum oxide (Ta ₂ O ₅ ), and an element second electrode 73 made of chromium (Cr). 74 has a sandwich structure in which layers are sequentially stacked. The active element exhibits diode switching characteristics in the positive and negative directions and becomes conductive when a voltage equal to or higher than a threshold is applied between both terminals of the element first electrode 71 and the element second electrodes 73 and 74.

The two TFD elements 69a and 69b are formed so as to be interposed between the data line 65 and the pixel electrode 63, and have the first TFD element 69a and the second TFD element 69a having opposite diode characteristics.
The TFD element 69b is preferably used.
The reason for this is that with this configuration, a positive / negative symmetrical pulse waveform can be used as the voltage waveform to be applied, and deterioration of the liquid crystal material in a liquid crystal display device or the like can be prevented. That is, in order to prevent deterioration of the liquid crystal material, it is desired that the diode switching characteristics be symmetrical in the positive and negative directions, and the two TFD elements 69a, 6 are required.
This is because a positive and negative symmetrical pulse waveform can be used by connecting 9b in series in the reverse direction.

[Second Embodiment]
The second embodiment of the present invention is a method of manufacturing the liquid crystal display device of the first embodiment,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust the retardation in the reflective region and the transmissive region, a layer thickness adjusting layer in which a layer thickness portion is disposed in the reflective region and a thin layer portion is disposed in the transmissive region. A layer thickness adjusting layer having a step portion in which the inclined surface at the boundary of the thin layer portion is formed in the vertical direction and having a relaxation portion for relaxing the step difference at the boundary between the layer thickness portion and the thin layer portion outside the display region Forming a step;
A first electrode that extends over the pixel column and extends to the outside of the display region on the upper layer of the layer thickness adjusting layer, and is formed in at least the reflective region and the transmissive region in the same pixel column Forming a first electrode so that the first electrode in the reflective region and the transmissive region is connected on the relaxation portion;
It is characterized by including.
Hereinafter, as an example of the method for manufacturing the liquid crystal display device according to the second embodiment, the method for manufacturing the liquid crystal display device according to the first embodiment will be described as an example with reference to FIGS. 15 to 17 as appropriate.

1. Manufacturing Process of Color Filter Substrate (1) Formation of Light Reflective Film First, as shown in FIG. 15A, a reflective film for forming a reflective region on a glass substrate 31 as a base material of the first substrate. 35 is formed. Such a reflective film can be formed by depositing a metal material such as aluminum on a mother substrate by vapor deposition or sputtering, and then patterning using a photolithography method.
In the case of manufacturing a transflective color filter substrate, a reflective film 35 having an opening 35a for forming a transmissive region is formed corresponding to each pixel.

(2) Formation of colored layer Next, as shown in FIG. 15B, a colored layer 37 of any one color of R, G, and B is formed corresponding to each pixel. Such a colored layer is formed by applying a photosensitive resin made of a transparent resin or the like in which a coloring material such as pigment or dye is dispersed on a mother substrate, and sequentially performing pattern exposure and development processing on the photosensitive resin. can do. Such exposure and development processing is repeated for each of R, G, and B colors.

(3) Formation of light shielding film Next, as shown in FIG. 15C, a light shielding film 39 is formed in each inter-pixel region.
As such a light-shielding film, for example, a metal film such as chromium (Cr) or molybdenum (Mo) is used as the light-shielding film, or three colors of R (red), G (green), and B (blue) are colored. A material in which both materials are dispersed in a resin or other base material, or a material in which a coloring material such as a black pigment or dye is dispersed in a resin or other base material can be used.
For example, when a light shielding film is formed using a metal film, a metal material such as chromium (Cr) is stacked on a glass substrate by a vapor deposition method or the like, and is then etched according to a predetermined pattern. be able to.

(4) Formation of Layer Thickness Adjustment Layer Next, as shown in FIG. 15 (d), a photosensitive resin material is uniformly applied on the substrate using a coating device such as a spin coater, for example. A material layer 40 'is formed. At this time, for example, when a spin coater is used, at a rotational speed of 600 to 2,000 rpm,
As the coating time of 20 seconds, a layer thickness adjusting layer having a thickness of 1 to 10 μm can be formed.
Here, the type of the photosensitive resin material constituting the layer thickness adjusting layer is not particularly limited, but for example, a kind of acrylic resin, epoxy resin, silicone resin, phenolic resin, oxetane resin, etc. Single or 2 or more types of combinations are mentioned. In addition, an inorganic filler such as silica particles, titanium oxide, zirconia oxide, or aluminum oxide can be added to the photosensitive resin material so that the uneven pattern can be formed with high accuracy.
Moreover, as the photosensitive resin material, the positive type that is photodegraded and solubilized in the developer by the portion irradiated with the light transmitted through the light transmitting portion and the light transmitted through the light transmitting portion are irradiated. Although there is a negative type in which the portion is cured and insolubilized in the developer, any of them can be suitably used.
In the present embodiment, a case where a positive photosensitive resin material is used will be described as an example.

Next, as shown in FIGS. 16A to 16C, in order to adjust the retardation in the reflection region and the transmission region, the layer thickness portion 40a is disposed in the reflection region, and the layer thin portion 40b is disposed in the transmission region. In the display area A, the layer thickness adjustment layer 40 and the layer thickness portion 40a and the layer thin portion 4 are provided.
A relaxing portion 1 that has a step portion in which an inclined surface at a step at the boundary of 0b is formed in the vertical direction and relaxes the step at the boundary between the layer thickness portion 40a and the layer thin portion 40b outside the display area A.
1 is formed.
More specifically, for example, a substrate is placed on a stepper stage, and FIG.
As shown to a), after arrange | positioning the 1st photomask 111, energy rays, such as i line | wire shown by the symbol L, are irradiated, A pattern is applied with respect to the photosensitive resin material layer 40 'uniformly apply | coated. An exposure (first exposure) is performed.
Next, after the substrate is moved from, for example, a stepper stage onto an exposure apparatus for batch exposure, a second photomask 121 is arranged, and energy rays are similarly irradiated as shown in FIG. Then, pattern exposure (second exposure) is performed on the layer thickness adjusting layer.
Next, as shown in FIG. 16C, for example, the photosensitive resin material layer 40 ′ on the substrate 31 is developed using a developer, so that the light transmitting portions of the first and second photomasks are formed. The portion irradiated with the transmitted light is developed, and the layer thickness adjusting layer 40 including the layer thickness portion 40a corresponding to the reflection region and the layer thin portion 40b corresponding to the transmission region can be formed.

At this time, the first photomask 111 and the second photomask 1 are outside the display area.
By making the mask pattern different from 13, a step portion having a desired inclined surface can be formed. On the other hand, in the display area, either one of the first exposure and the second exposure is performed, or the first photomask 111 and the second photomask 113 are used.
By using the same mask pattern, the inclined surface can be formed in the vertical direction so that the stepped portion cannot be tapered as much as possible. Therefore, in the display area A, the inclined surface (first inclined surface 17) at the step at the boundary between the layer thickness part 40a and the layer thin part 40b is formed in the vertical direction, and outside the display area A, the layer thickness part 40a. Thickness adjustment layer in which the inclined surface (second inclined surface 18) at the step of the boundary between the thin film portion 40b and the thin layer portion 40b is made gentler than the angle formed by the first inclined surface 17 in the display area A and the substrate surface. 40 is formed.

In addition, the formation method of the layer thickness part of the layer thickness adjustment layer mentioned above, a layer thin part, an inclined surface, etc. is based on the multiple exposure using several photomasks of what is called a different pattern. However, in addition to this, a layer thickness adjusting layer having a layer thickness portion, a layer thin portion, an inclined surface, or the like is also formed by halftone exposure using a halftone mask with partially different light transmittances. be able to.

(5) Formation of Scan Electrode and Alignment Film Next, as shown in FIG. 16 (d), the entire surface of the layer thickness adjusting layer including the layer thickness portion and the layer thin portion is made of ITO (indium tin oxide) or the like. After forming a transparent conductive layer made of a transparent conductive material, for example, by sputtering, patterning is performed using a photolithography method,
An electrode 33 having a predetermined pattern shape is formed.
For example, if the color filter substrate to be manufactured is a passive matrix type liquid crystal display device or T
In the case of a color filter substrate used in an active matrix type liquid crystal display device including an FD element (Thin Film Diode), a plurality of transparent electrodes are patterned in a parallel stripe shape. In addition, the color filter substrate to be manufactured is a TFT element (Thin Film Transi
In the case of a color filter substrate used in an active matrix type liquid crystal display device having a stor), it is patterned as a planar electrode corresponding to each cell region.
At this time, in the display region, since the step at the boundary between the layer thickness portion and the layer thin portion of the layer thickness adjustment layer is formed in the vertical direction, the scan electrode of the step portion is likely to be poorly formed. A relaxation portion is formed in the layer thickness adjustment layer outside the display region, and the reflection electrode and the transmission region in one pixel can be formed so that the scan electrodes are securely connected by the relaxation portion. Can be secured. Accordingly, it is possible to manufacture a liquid crystal display device in which the area of the display failure region is reduced while preventing the occurrence of malfunction due to disconnection or the like.

Next, as shown in FIG. 16E, the color filter substrate 30 is manufactured by forming an alignment film 45 made of polyimide resin or the like for each cell region on the substrate on which the transparent electrode 33 is formed. can do.

2. Element Substrate Manufacturing Process (1) Formation of Element First Electrode As shown in FIG. 17A, the element substrate 60 first forms an element first electrode 71 on a base 61 made of a glass substrate. The element first electrode 71 is made of, for example, a tantalum alloy and can be formed by using a sputtering method or an electron beam evaporation method. At this time, the element first electrode 71 with respect to the second glass substrate 61 is formed before the element first electrode 71 is formed.
Can be remarkably improved, and the second glass substrate 61 can be used for the first element.
It is also preferable to form an insulating film made of tantalum oxide (Ta ₂ O ₅ ) or the like on the base 61 because the diffusion of impurities into the electrode 71 can be efficiently suppressed.
At this time, in the method for manufacturing the liquid crystal display device according to the present embodiment, the element first electrode 71 is adjacent to the two pixels along the data line 65 or obliquely along the data line 65. In order to share the TFD element 69 corresponding to the electrode 63, two adjacent pixels G
It is preferable to form over. This is because the formation area of the TFD element 69 can be reduced while the pixel electrode 63 can be enlarged, so that the liquid crystal display device in which each pixel area is enlarged and display characteristics such as contrast are improved can be efficiently performed. This is because it can be manufactured.

Next, as shown in FIG. 17B, an oxide film 72 is formed by oxidizing the surface of the element first electrode 71 by an anodic oxidation method. More specifically, after the substrate on which the element first electrode 71 is formed is immersed in an electrolytic solution such as a citric acid solution, a predetermined voltage is applied between the electrolytic solution and the element first electrode 71. Thus, the surface of the element first electrode 71 can be oxidized.

(2) Formation of Element Second Electrode and Data Line Next, again, a metal film is formed on the entire surface including the element first electrode 71 by sputtering or the like, and patterned by photolithography. Thus, as shown in FIG. 17C, the element second electrodes 73 and 74 and the data line 65 are formed. In this way, the TFD element 69 and the data line 65 can be formed.

(3) Formation of Pixel Electrode Next, as shown in FIG. 17D, after forming a transparent conductive layer made of a transparent conductive material such as ITO (indium tin oxide, etc.) by sputtering or the like, photolithography is performed. By patterning using a method, the pixel electrode 63 electrically connected to the TFD element 69 is formed.

(4) Formation of Alignment Film Next, as shown in FIG.
The element substrate 60 can be manufactured by forming the alignment film 75 made of polyimide resin or the like.

3. Bonding Step Next, although not shown in the drawings, in either one of the color filter substrate 30 and the element substrate 60, after laminating the sealing material 23 so as to surround the display region, the other substrate is overlapped and thermocompression bonded. The color filter substrate 30 and the element substrate 60 are bonded together to form a cell structure.

4). Next, after injecting a liquid crystal material into the cell from an injection port provided in a part of the sealing material, the cell is sealed with a sealing material or the like.
Further, on the outer surfaces of the color filter substrate 30 and the element substrate 60, retardation plates (1 /
4λ plate) and a polarizing plate are disposed, a driver is mounted, and a liquid crystal display device can be manufactured by being incorporated in a housing together with a backlight or the like.

[Third Embodiment]
In the third embodiment, a first substrate having a first electrode, a second substrate having a second electrode, and a liquid crystal sandwiched between the first substrate and the second substrate. A transflective liquid crystal display device including a display region including a plurality of pixels each having a reflective region and a transmissive region.
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of pixels arranged in one direction in the display region,
The first substrate is a layer thickness adjusting layer having a layer thickness portion disposed in the reflection region and a thin layer portion disposed in the transmission region in order to adjust retardation in the reflection region and the transmission region. A layer thickness adjusting layer including a stepped portion formed in a vertical direction with an inclined surface at the boundary between the layer thickness portion and the layer thin portion in the display region,
The first electrode is formed on the upper layer thickness adjustment layer so as to straddle the pixel columns, and extends to the outside of the display area,
It is characterized in that a conducting member is disposed across a portion extending to the outside of the display region in the first electrode formed in at least the reflective region and the transmissive region of the same pixel column.
Hereinafter, the liquid crystal display device of the third embodiment of the present invention will be described with reference to FIGS. 18 to 19 as appropriate, focusing on the configuration of the color filter substrate different from the liquid crystal display device of the first embodiment.
Description of common points will be omitted as appropriate.

1. Color Filter Substrate (1) Basic Configuration The color filter substrate 30 used in the liquid crystal display device 10 of the present embodiment is basically
As shown in FIG. 18, similarly to the color filter substrate of the first embodiment, a light reflecting film 35, a light shielding film 39, a colored layer 37, and a layer thickness adjusting layer 40 are formed on a base 31 made of a glass substrate or the like. And the scanning electrode 33 are sequentially stacked. Further, an alignment film 45 for controlling the orientation of the liquid crystal material is provided on the scan electrode 33, and a clear image display is recognized on the surface opposite to the surface on which the scan electrode 33 and the like are formed. Retardation plate (1/4 wavelength plate)
47 and a polarizing plate 49 are arranged.
Further, the light reflecting film 35, the light shielding film 39, the colored layer 37, the alignment film 45, and the like can be the same as the color filter substrate used in the liquid crystal display device of the first embodiment. Description is omitted.

(2) Layer Thickness Adjustment Layer In the liquid crystal display device 10 according to the present embodiment, on the color filter substrate 30,
A layer thickness adjusting layer 40 made of a photosensitive resin material such as an acrylic resin or an epoxy resin is formed. The layer thickness adjusting layer 40 is a layer thickness adjusting layer 40 having a layer thickness portion 40a disposed in the reflective region and a layer thin portion 40b disposed in the transmissive region. Is provided with a stepped portion in which the inclined surface 17 is formed in the vertical direction at the step at the boundary between the layer thick portion 40a and the layer thin portion 40b.
That is, in order to optimize the retardation in the reflective region and the transmissive region, a liquid crystal display device having a multi-gap structure in which the thickness of the reflective region in the liquid crystal material layer is relatively thin and the layer thickness of the transmissive region is large is displayed. In the region, the width of the step at the boundary between the layer thickness portion and the layer thin portion of the layer thickness adjusting layer as viewed from the direction perpendicular to the substrate surface is reduced.
Therefore, as described in the first embodiment, it is possible to reduce the area of the display defect region due to the step, optimize the retardation in each of the reflective region and the transmissive region, and obtain a liquid crystal display device having excellent display characteristics. it can.

However, when the inclined surface at the step of the boundary between the layer thickness portion and the layer thin portion is formed in the vertical direction, when the scan electrode is formed on the layer thickness adjustment layer in the manufacturing stage, the electrode is formed on the step portion. May not be formed uniformly. In this case, the electrical continuity between the scan electrode in the reflective region and the scan electrode in the transmissive region in one pixel is lowered, causing a malfunction.
Therefore, in the liquid crystal display device of the present embodiment, unlike the relaxation portion in the first embodiment, as will be described later, the scanning electrode in the reflective region and the transmissive region in one pixel is used outside the display region using a conductive member. This ensures electrical continuity.

(3) Scan Electrode and Conducting Member A scan electrode 33 made of a transparent conductor such as ITO (Indium Tin Oxide) is formed on the layer thickness adjusting layer 40. The scanning electrode 33 is formed in a stripe shape in which a plurality of transparent electrodes are arranged in parallel for each pixel column composed of pixels arranged in one direction.
Here, in the liquid crystal display device of the present embodiment, the inclined surface at the step of the layer thickness adjustment layer formed between the reflection region and the transmission region and the boundary between the layer thickness portions is formed in the display region. It is formed in the vertical direction. Therefore, the scanning electrode in the reflection region and the scanning electrode in the transmission region in one pixel may be in a discontinuous state.
Therefore, in the liquid crystal display device of the present embodiment, the scanning electrode 33a on the layer thickness portion 40a and the scanning electrode 33b on the layer thin portion 40b in one pixel extend to the outside of the display area A, and at least the same pixel column. The scanning electrodes 33 formed in the reflective region and the transmissive region are electrically connected by using a conductive member 140 disposed across the scanning electrode 33 at a portion extending to the outside of the display region A. Therefore, even when the scanning electrode 33a in the reflective region and the scanning electrode 33b in the transmissive region are not continuous in one pixel, electrical continuity is ensured, and the reflective region and transmissive region in one pixel are secured. A voltage can be applied in each.
Therefore, in the layer thickness adjusting layer in the display region, it is possible to prevent the occurrence of malfunction due to disconnection or the like even though the scan electrode is formed on the step portion including the inclined surface formed in the vertical direction. it can.

As an example of such a conducting member, as shown in FIG. 18, the layer thickness portion 40a and the layer thin portion 40
A conductive material 140 having a film thickness equal to or higher than the level difference of the step at the boundary of b can be used. That is, the scanning electrode 33a on the layer thickness portion 40a of the layer thickness adjusting layer 40 and the scanning electrode 33 on the layer thin portion 40b.
By arranging or forming the conductive material 140 having a predetermined film thickness so that b extends beyond the display area, the layer thickness portion can be obtained without considering disconnection or formation failure in the stepped portion. It is possible to ensure electrical continuity between the scan electrode on 40a and the scan electrode 33b on the thin layer portion 40b.
Examples of such conductive materials include Al (aluminum), Ta (tantalum), and Cr.
(Chromium), Ag (silver), ITO (indium tin oxide), IZO (indium zinc oxide), etc. are mentioned. However, it is not limited to these, and it can be suitably used as long as it can be arranged or formed on the substrate by controlling the film thickness and thickness so as not to affect the cell gap of the liquid crystal panel. can do.

In addition, slits are provided at points corresponding to the step (first inclined surface) at the boundary between the layer thickness portion and the layer thin portion in the display region, on both sides of the display region, where the both ends of the scanning electrode are conductive. The points to be provided can be the same as in the first embodiment.

[Fourth Embodiment]
4th Embodiment of this invention is a manufacturing method of the liquid crystal display device of 3rd Embodiment,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust the retardation in the reflective region and the transmissive region, a layer thickness adjustment layer in which a layer thickness portion is disposed in the reflective region and a thin layer portion is disposed in the transmissive region. Forming a layer thickness adjusting layer having a stepped portion in which the inclined surface of the boundary of the thin layer portion is formed in the vertical direction;
The upper layer thickness adjustment layer extends over the pixel column and extends to the outside of the display area.
Forming an electrode of
A step of disposing a conductive member across a portion extending to the outside of the display region in the first electrode formed in the reflective region and the transmissive region of at least the same pixel row;
It is characterized by including.
Hereinafter, an example of a manufacturing method of the liquid crystal display device according to the fourth embodiment will be described with reference to FIG. 19 as appropriate, focusing on the manufacturing process of the color filter substrate different from that of the second embodiment. Description is omitted.

1. Manufacturing Process of Color Filter Substrate (1) Formation of Light Reflecting Film, Colored Layer, and Light-shielding Film First, as shown in FIG. 19A, the glass substrate 3 is formed by the same method as in the second embodiment.
1, a light reflection film 35, a colored layer 37, and a light shielding film 39 are formed.

(2) Formation of Layer Thickness Adjustment Layer Next, as shown in FIG. 19B, similarly to the second embodiment, multiple exposure using a plurality of photomasks with different patterns, or partial light transmission After halftone exposure using halftone masks having different rates, development is performed using a developer, thereby adjusting the layer thickness including the layer thickness portion 40a corresponding to the reflection region and the layer thin portion 40b corresponding to the transmission region. Layer 40 is formed.
Since the inclined surface at the step at the boundary between the layer thickness portion and the layer thin portion is formed in the vertical direction, the width of the step portion viewed from the direction perpendicular to the substrate surface is reduced, and The area can be reduced. Accordingly, display characteristics such as contrast can be improved in the manufactured liquid crystal display device.

(3) Formation of Scan Electrode and Conducting Member Next, as shown in FIG. 19C, the layer thickness portion 40 of the layer thickness adjusting layer is the same as in the second embodiment.
The scanning electrode 33 is formed on a and the layer thin part 40b.
Thereafter, as shown in FIG. 19D, outside the display region A, the scanning electrode 33a on the layer thickness portion 40a and the scanning electrode 33b on the layer thin portion 40b are electrically connected outside the display region. A conductive material 140 as a conductive member is disposed. For example, when an aluminum film is used as the conductive member, it can be formed in the same manner as the above-described reflective film forming method.

2. Other processes For other element substrate manufacturing processes, bonding processes, liquid crystal material injection processes, etc.
Since it can be the same as that of the embodiment, the description is omitted here.

[Fifth Embodiment]
In the fifth embodiment, the transflective liquid crystal display device of the first embodiment is replaced with an active matrix liquid crystal display device using a TFT element (Thin Film Transistor) which is a three-terminal active element as a switching element. It is applied.

FIG. 20A shows a cross-sectional view of the liquid crystal display device 210 according to the fifth embodiment, and FIG.
FIG. 2 shows a plan view of the liquid crystal display device 210. As shown in FIG. 20A, in the liquid crystal display device 210, the counter substrate 230 and the element substrate 260 are bonded to each other by a sealing material at the periphery thereof, and the counter substrate 230, the element substrate 260, and the seal A liquid crystal material is enclosed in a gap surrounded by the material.

The counter substrate 230 is formed of glass, plastic, or the like, and the counter substrate 2
30 is provided with a color filter, that is, a colored layer 237, a counter electrode 233 formed on the colored layer 237, and an alignment film 245 formed on the counter electrode 233. In addition, a layer thickness adjusting layer 240 for optimizing retardation is provided between the colored layer 237 and the counter electrode 233 in the reflective region R.
Here, the counter electrode 233 is a planar electrode formed over the entire surface of the counter substrate 230 by ITO or the like. In addition, the colored layer 237 has R (red), G (green), B (blue) or C (cyan), M (magenta), Y (yellow), and the like at positions facing the pixel electrode 263 on the element substrate 260 side. Each color filter element is provided. And the colored layer 23
7, a black mask or a black matrix, that is, a light shielding film 239 is provided at a position not facing the pixel electrode 263.

The element substrate 260 facing the counter substrate 230 is formed of glass, plastic, or the like, and a TFT element 269 serving as an active element functioning as a switching element and a transparent insulating film 280 are sandwiched between the element substrate 260 and the element substrate 260. And a pixel electrode 263 formed in the upper layer of the TFT element 269.
Here, the pixel electrode 263 has a light reflection film 29 for performing reflection display in the reflection region R.
5 (263a) and the transparent region T is formed as a transparent electrode 263b using ITO or the like. The light reflection film 295 as the pixel electrode 263a is formed of a light reflective material such as Al (aluminum), Ag (silver), or the like. An alignment film 285 is formed on the pixel electrode 263 and the alignment film 28 is also formed.
5 is subjected to a rubbing process as an alignment process.

Further, a phase difference plate 247 is formed on the outer surface of the counter substrate 230 (that is, the upper side in FIG. 21), and a polarizing plate 249 is further formed thereon. Similarly, a phase difference plate 287 is formed on the outer surface of the element substrate 260 (that is, the lower side in FIG. 21), and a polarizing plate 289 is further formed thereunder. Further, a backlight unit (not shown) is disposed below the element substrate 260.

The TFT element 269 includes a gate electrode 271 formed on the element substrate 260, a gate insulating film 272 formed on the entire area of the element substrate 260 on the gate electrode 271, and the gate insulating film 272 interposed therebetween. A semiconductor layer 291 formed above the gate electrode 271, a source electrode 273 formed on one side of the semiconductor layer 291 via a contact electrode 277, and a contact electrode 277 on the other side of the semiconductor layer 291. And a drain electrode 266 formed via the electrode.
The gate electrode 271 extends from a gate bus wiring (not shown), and the source electrode 2
Reference numeral 73 denotes a source bus wiring (not shown). A plurality of gate bus lines extend in the horizontal direction of the second substrate 260 and are formed in parallel in the vertical direction at equal intervals, and the source bus lines cross the gate bus lines with the gate insulating film 272 interposed therebetween. Thus, a plurality of lines are formed in parallel in the horizontal direction at equal intervals.
The gate bus wiring is connected to a liquid crystal driving IC (not shown) and functions as, for example, a scanning line, while the source bus wiring is connected to another driving IC (not shown) and functions as, for example, a signal line. To do.
The pixel electrode 263 is formed in a region excluding a portion corresponding to the TFT element 269 in a rectangular region defined by the gate bus wiring and the source bus wiring intersecting each other.

Here, the gate bus wiring and the gate electrode can be formed of chromium, tantalum, or the like, for example. The gate insulating film 272 is formed of, for example, silicon nitride (SiNx), silicon oxide (SiOx), or the like. The semiconductor layer 291 is, for example, doped a-S.
i, polycrystalline silicon, CdSe, or the like. Furthermore, the contact electrode 277 can be formed of, for example, a-Si, and the source electrode 273, the source bus wiring integrated therewith, and the drain electrode 266 can be formed of, for example, titanium, molybdenum, aluminum, or the like.

The organic insulating film 280 is formed over the entire area of the second substrate 260 so as to cover the gate bus wiring, the source bus wiring, and the TFT element 269. However, a contact hole 283 is formed in a portion corresponding to the drain electrode 266 of the organic insulating film 280, and the pixel electrode 263 and the drain electrode 266 of the TFT element 269 are electrically connected at the contact hole 283.
In addition, the organic insulating film 280 has a scattering shape in a region corresponding to the reflection region R,
A layer thickness adjusting layer having a concavo-convex pattern composed of a regular or irregular repetitive pattern of peaks and valleys is formed. As a result, the light reflecting film 2 laminated on the organic insulating film 280.
Similarly, 95 (263a) also has a light reflection pattern composed of an uneven pattern. However, this uneven pattern is not formed in the transmission region T.

In the liquid crystal display device 210 having the above-described structure, during reflective display, external light such as sunlight or indoor illumination light enters the liquid crystal display device 210 from the first substrate 230 side, and a colored layer. 237, the liquid crystal material 221 and the like pass to the light reflecting film 295, where the light is reflected, passes through the liquid crystal material 221 and the colored layer 237 again, and exits from the liquid crystal display device 210 to perform reflection display. Is called.
On the other hand, during transmissive display, a backlight unit (not shown) is turned on, and light emitted from the backlight unit passes through the transparent transparent electrode 263b portion to form a colored layer 237, a liquid crystal material. By passing through 221 and the like and going out of the liquid crystal display panel 220, transmissive display is performed.

Further, as shown in FIG. 20A, the liquid crystal display device 210 according to the present embodiment stripes a reflective region R and a transmissive region T across a pixel column composed of pixels arranged in one direction in the display region. In order to adjust retardation in the reflective region and the transmissive region, the counter substrate has a layer thickness portion 240a disposed in the reflective region and a thin layer portion 240a disposed in the transmissive region. A thickness adjusting layer 240 is provided.
The layer thickness adjusting layer 240 includes a layer thickness portion 240a and a layer thin portion 240 in the display area.
By having a step portion in which the inclined surface 217 at the step at the boundary with b is formed in the vertical direction, the width of the step portion when viewed from the direction perpendicular to the substrate surface is reduced, and the display defect region The area can be reduced.
Further, outside the display area, as shown in FIGS. 21A and 21B, a relaxation portion 211 that relaxes the step at the boundary between the layer thickness portion 240a and the layer thin portion 240b is provided. In this case, since the electrode 233a on the layer thickness portion 240a and the electrode 230b on the layer thin portion 240b are connected to each other, electrical conductivity is secured, or the electrode on the layer thickness portion and the layer thin portion on the layer thin portion are secured. Extend the electrode to the outside of the display area, arrange the conductive member so as to straddle those electrodes,
Ensures electrical continuity. Therefore, even if there is a risk that a step difference at the boundary between the layer thickness portion and the layer thin portion is steep in the display region and an electrode formation failure may occur, the electrical conductivity of the electrode can be secured outside the display region. Therefore, it is possible to prevent the occurrence of malfunction due to disconnection or the like.
Therefore, it is possible to obtain a liquid crystal display device with excellent display characteristics in which the retardation is optimized while reducing the area of the display failure region.

A plan view and a cross-sectional view of the counter substrate configured as described above are shown in FIGS. In the counter substrate 230 in the liquid crystal display device of the present embodiment, the planar electrode 233 is disposed on the layer thickness adjusting layer 240 described above, and the layer thickness portion 24 of the layer thickness adjusting layer 240 is present in the display area.
In the step at the boundary between 0a and the thin layer portion 240b, a formation failure such as disconnection may occur.
However, outside the display area, the planar electrode 2 is formed by the above-described relaxation portion 211 or the conductive member.
Since the electrical continuity as a whole is ensured, the area of the display failure region due to the step difference between the layer thickness portion and the layer thin portion is reduced while preventing the occurrence of malfunction due to disconnection or the like. be able to.
Therefore, even in a liquid crystal display device including a TFT element, display characteristics can be improved.

[Sixth Embodiment]
As a sixth embodiment according to the present invention, an electronic apparatus including the liquid crystal display device according to any one of the first, third, and fifth embodiments will be specifically described.

FIG. 22 is a schematic configuration diagram showing the overall configuration of the electronic apparatus of the present embodiment. This electronic apparatus has a liquid crystal panel 20 provided in a liquid crystal display device and a control means 200 for controlling the liquid crystal panel 20. In FIG. 22, the liquid crystal panel 20 is conceptually divided into a panel structure 20a and a drive circuit 20b composed of a semiconductor element (IC) or the like. The control means 200 includes a display information output source 201, a display processing circuit 202, a power supply circuit 203,
It is preferable to have a timing generator 204.
The display information output source 201 includes a ROM (Read Only Memory) and a RAM (Random Acces).
s Memory), a storage unit composed of a magnetic recording disk, an optical recording disk, and the like, and a tuning circuit that tunes and outputs a digital image signal, based on various clock signals generated by the timing generator 204 The display information is preferably supplied to the display processing circuit 202 in the form of a predetermined format image signal or the like.

The display processing circuit 202 includes various well-known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information to display the image. Information is preferably supplied to the drive circuit 20b together with the clock signal CLK. Furthermore, the drive circuit 20b preferably includes a first electrode drive circuit, a second electrode drive circuit, and an inspection circuit. Further, the power supply circuit 203 has a function of supplying a predetermined voltage to each of the above-described components.
In the electronic device according to the present embodiment, in the display area, the inclined surface at the step of the boundary between the layer thickness part and the layer thin part for forming the multi-gap is formed in the vertical direction, and outside the display area. In addition, since the liquid crystal display device in which the electrical continuity of the electrodes on the layer thickness part and the layer thin part is ensured is provided, it is possible to provide an electronic apparatus that can realize image display with excellent display characteristics.

According to the present invention, in the display region, the inclined surface at the step of the boundary between the layer thickness portion and the layer thin portion for forming the multi-gap is formed in the vertical direction, and outside the display region,
By ensuring the electrical continuity of the electrodes on the layer thickness part and the layer thin part, the liquid crystal display device has improved display characteristics by reducing the area of the display defect area while reducing the malfunction. be able to. Therefore, liquid crystal display devices and electronic devices such as mobile phones and personal computers, liquid crystal televisions, viewfinder type / monitor direct view type video tape recorders, car navigation devices, pagers, electronic notebooks, calculators, word processors, work The present invention can be applied to electronic devices equipped with stations, videophones, POS terminals, touch panels, and the like.

It is a schematic perspective view of the liquid crystal display device of 1st Embodiment. It is a schematic sectional drawing of the liquid crystal display device of 1st Embodiment. (A)-(b) is a figure provided in order to demonstrate arrangement | positioning of a reflective area | region, respectively. It is a figure which shows the modification of arrangement | positioning of a reflective area | region. (A)-(c) is the top view and sectional drawing of a color filter substrate which are used for the liquid crystal display device of 1st Embodiment, respectively. (A)-(b) is a figure provided in order to demonstrate the planar shape of a light reflection film, respectively. (A) is a figure which shows the display defect area | region in the conventional liquid crystal display device, (b) is a figure which shows the display defect area | region in the liquid crystal display device of 1st Embodiment. (A)-(b) is a figure provided in order to demonstrate the angle which an inclined surface and a board | substrate surface each make. It is a figure provided in order to demonstrate the relaxation part containing a predetermined inclined surface. It is a figure provided in order to demonstrate the relaxation part containing a several level | step difference. (A) is a figure which shows the color filter substrate which provided the relaxation part in one outer side of a display area, (b) is a figure which shows the color filter substrate which provided the relaxation part on both sides of the display area. (A)-(c) is the top view and sectional drawing which show the color filter board | substrate which provided the layer thickness adjustment layer only in the reflection area, respectively. (A)-(c) is the top view and sectional drawing which show the color filter board | substrate which formed the slit in the electrode, respectively. (A)-(b) is the top view and sectional drawing which are provided in order to demonstrate an element substrate, respectively. (A)-(d) is a figure provided in order to demonstrate the manufacturing method of the color filter substrate used for the liquid crystal display device of 1st Embodiment (the 1). (A)-(e) is a figure provided in order to demonstrate the manufacturing method of the color filter board | substrate used for the liquid crystal display device of 1st Embodiment (the 2). (A)-(e) is a figure provided in order to demonstrate the manufacturing method of an element substrate. It is a figure provided in order to demonstrate the conduction | electrical_connection member in the color filter substrate used for the liquid crystal display device of 3rd Embodiment. It is a figure provided in order to demonstrate the manufacturing method of the color filter substrate used for the liquid crystal display device of 3rd Embodiment. (A)-(b) is sectional drawing and the top view which show the liquid crystal display device of 5th Embodiment, respectively. (A)-(b) is the top view and sectional drawing of the opposing board | substrate which are used for the liquid crystal display device of 5th Embodiment, respectively. It is a block diagram which shows schematic structure of the electronic device of 6th Embodiment. (A)-(C) is a figure explaining the structure of the liquid crystal display device of the conventional multigap structure, respectively.

Explanation of symbols

10: Liquid crystal display device, 11: Relaxation part, 12: Step, 13: Display defect area, 15: Inclined surface,
17: 1st inclined surface, 18: 2nd inclined surface, 23: Seal material, 30: Color filter substrate, 31: Glass substrate, 33: Scan electrode, 33a: Scan electrode of layer thickness part, 33b: Layer thin Scanning electrode, 35: light reflecting film, 35a: opening, 40: layer thickness adjusting layer, 40a: thick part, 40b
: Thin-walled portion, 40 ': photosensitive resin material layer, 45: alignment film, 60: element substrate, 61: glass substrate, 63: pixel electrode, 65: data line, 69: TFD element, 75: alignment film, 140: Conductive member, 210: liquid crystal display device, 233: planar electrode, 233a: planar electrode on layer thickness part, 23
3b: planar electrode on the thin layer portion, 240: layer thickness adjusting layer, 240a: layer thick portion, 240b: thin layer portion, 269: TFT element

Claims (11)

A first substrate provided with a first electrode, a second substrate provided with a second electrode, and a liquid crystal material sandwiched between the first substrate and the second substrate. In a transflective liquid crystal display device having a display area including a plurality of pixels each having a reflective area and a transmissive area,
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of the pixels arranged in one direction in the display region,
The first substrate includes a layer thickness part disposed in the reflection region and a layer thin part disposed in the transmission region in order to adjust retardation in the reflection region and the transmission region. A layer having a stepped portion in which an inclined surface at a boundary between the layer thickness portion and the layer thin portion is formed in a vertical direction within the display region, and the layer thickness portion and the layer outside the display region; A layer thickness adjusting layer having a relaxing part for relaxing the step at the boundary of the thin part,
The first electrode is formed on the upper layer thickness adjustment layer so as to extend over the pixel column, and extends to the outside of the display region, and includes at least a reflection region and a transmission region in the same pixel column. A liquid crystal display device, wherein a first electrode formed in a region is connected on the relaxation portion. When the inclined surface in the display area is the first inclined surface, the relaxing portion is the first inclined surface.
The liquid crystal display device according to claim 1, further comprising a second inclined surface that is gentler than an angle formed between the inclined surface and the substrate surface. The liquid crystal display device according to claim 1, wherein the relaxing portion includes a plurality of steps connecting the layer thickness portion and the layer thin portion. A first substrate provided with a first electrode, a second substrate provided with a second electrode, and a liquid crystal material sandwiched between the first substrate and the second substrate. In a transflective liquid crystal display device having a display area including a plurality of pixels each having a reflective area and a transmissive area,
The reflective region and the transmissive region are arranged in a stripe shape across a pixel column composed of the pixels arranged in one direction in the display region,
The first substrate includes a layer thickness part disposed in the reflection region and a layer thin part disposed in the transmission region in order to adjust retardation in the reflection region and the transmission region. A layer thickness adjusting layer including a step portion formed in a vertical direction with an inclined surface at the boundary between the layer thickness portion and the layer thin portion in the display region,
The first electrode is formed over the pixel column on the layer thickness adjustment layer, and extends to the outside of the display area.
A liquid crystal display characterized in that a conductive member is arranged across a portion of the first electrode formed in at least the same reflective region and transmissive region of the pixel row that extends beyond the display region. apparatus. 5. The liquid crystal display device according to claim 1, wherein an angle formed between the inclined surface and the substrate surface in the display region is set to a value within a range of 60 to 90 °. The liquid crystal display device according to claim 1, wherein the first electrode in the reflective region and the transmissive region are electrically connected on both sides of the display region. 7. The liquid crystal display device according to claim 1, wherein a slit is provided in a portion corresponding to the stepped portion in the pixel in the first electrode. The liquid crystal display device according to claim 1, wherein the second substrate is an element substrate including a TFD element or a TFT element. A first substrate provided with a first electrode, a second substrate provided with a second electrode, and a liquid crystal material sandwiched between the first substrate and the second substrate. A transflective liquid crystal display device having a display area including a plurality of pixels each having a reflective area and a transmissive area, wherein the reflective area and the transmissive area are arranged in one direction within the display area In a method of manufacturing a liquid crystal display device arranged in a stripe shape across a pixel column composed of the pixels,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust the retardation in the reflective region and the transmissive region, a layer thickness adjusting layer in which a layer thickness portion is disposed in the reflective region and a thin layer portion is disposed in the transmissive region, and in the display region, The step has a step portion in which an inclined surface at the boundary between the layer thickness portion and the layer thin portion is formed in a vertical direction, and is relaxed to reduce the step at the boundary between the layer thickness portion and the layer thin portion outside the display area. Forming a layer thickness adjusting layer having a portion;
A first electrode disposed on the upper layer thickness adjustment layer so as to extend over the pixel column and to extend outside the display region, at least in the reflective region and the transmissive region in the same pixel column; Forming the first electrode such that the first electrode in the reflection region and the transmission region to be formed is connected on the relaxation portion;
A method of manufacturing a liquid crystal display device comprising: A first substrate provided with a first electrode, a second substrate provided with a second electrode, and a liquid crystal material sandwiched between the first substrate and the second substrate. A transflective liquid crystal display device having a display area including a plurality of pixels each having a reflective area and a transmissive area, wherein the reflective area and the transmissive area are arranged in one direction within the display area In a method of manufacturing a liquid crystal display device arranged in a stripe shape across a pixel column composed of the pixels,
Forming a photosensitive resin material layer on the first substrate;
In order to adjust retardation in the reflective region and the transmissive region, a layer thickness portion is disposed in the reflective region, and a thin layer portion is disposed in the transmissive region, and in the display region, Forming a layer thickness adjusting layer having a step portion in which an inclined surface at the boundary between the layer thickness portion and the layer thin portion is formed in a vertical direction;
Forming the first electrode on the upper layer thickness adjusting layer so as to extend over the pixel column and extend outside the display area;
A step of disposing a conductive member across a portion extending to the outside of the display region in the first electrode formed in the reflection region and the transmission region of at least the same pixel row;
A method of manufacturing a liquid crystal display device comprising: An electronic apparatus comprising the liquid crystal display device according to claim 1.

Images