JP4553661B2 - Liquid crystal display - Google Patents

Description

The present invention relates to a liquid crystal display device. More specifically, the present invention relates to a liquid crystal display device having a multi-gap structure suitable for realizing a transflective liquid crystal display.

Liquid crystal display devices (hereinafter also referred to as “LCD”) take advantage of thin, lightweight, and low power consumption, office automation (OA) devices such as word processors and personal computers, portable information devices such as electronic notebooks, and liquid crystal monitors. It is used in a wide range of fields such as a camera-integrated video tape recorder (VTR) equipped with

Unlike a cathode ray tube (CRT) or an electroluminescence (EL) display device, the LCD is a non-self-luminous display device. Therefore, the LCD performs screen display using light from a specific light source or ambient light. For example, a transmissive LCD performs display using light from a backlight placed behind a display panel, and is less affected by ambient brightness and can realize high-contrast display. . However, the transmissive LCD has room for improvement in terms of an increase in power consumption due to the backlight and a decrease in visibility in a very bright usage environment. On the other hand, the reflective LCD performs display using ambient light instead of backlight, and can reduce power consumption. However, the reflective LCD has a room for improvement in that the visibility is deteriorated particularly in a dark environment because the brightness and contrast ratio of the display greatly depend on the use environment.

On the other hand, in recent years, a transflective LCD, so-called transflective LCD, has attracted attention. The transflective LCD has a transparent electrode that transmits light from the backlight in one pixel area and a reflective electrode that reflects ambient light. Depending on the use environment, the display and reflection mode in the transmissive mode The display can be switched to or displayed in both display modes. Therefore, the transflective LCD is less affected by ambient brightness and can realize a high contrast display, and the reflective LCD has a low power consumption. Have both.

In general, in a transflective LCD, in order to provide a liquid crystal thickness (cell gap) difference between a transmissive region and a reflective region, a structure in which a step (multi-gap forming layer) is formed on one substrate surface constituting a liquid crystal panel, A so-called multi-gap structure is employed. According to such a multi-gap type transflective LCD, for example, the liquid crystal thickness of the transmissive region is approximately double the liquid crystal thickness of the reflective region, so that it passes through the liquid crystal layer of the reflective region and transmissive region. The path lengths of the light to be made can be made equal. Therefore, in each of the transmission mode and the reflection mode, it is possible to realize a display with little optical loss, and in the display using both display modes, it is possible to prevent the display quality from being deteriorated due to the double image of the image. can do.

As such a multi-gap type transflective LCD, for example, a configuration of a liquid crystal display device in which a step is provided on the surface of an element side substrate (thin film transistor (TFT) array substrate) is disclosed (for example, Patent Document 1). reference.). According to such a liquid crystal display device, it is possible to achieve the operational effect due to the multi-gap method as described above. However, in such a TFT side multi-gap type transflective liquid crystal display device, the edge part of the multi-gap forming layer corresponding to the boundary between the transmissive region and the reflective region is in any of the transmissive and reflective display modes. Also, the region does not contribute to display, that is, a so-called invalid region. That is, in the transmissive mode, the backlight light from the back of the panel is normally reflected by the reflective electrode disposed at the edge portion, and in the reflective mode, the ambient light reflected at the edge portion is When it exits from the panel, it is totally reflected at the interface between glass and air.

On the other hand, the structure of the liquid crystal display device which provided the level | step difference in the surface of the color filter (CF) side board | substrate is disclosed (for example, refer patent document 2, 3). Such a CF side multi-gap type transflective liquid crystal display device can effectively reduce the ineffective area existing at the boundary between the transmissive area and the reflective area. This has the advantage that the deterioration of display quality due to the above can be reduced.

In such a conventional multi-gap LCD, multi-gap forming layers and spacers are arranged with the same density (number and interval) in the pixel region and the surrounding black matrix (BM) forming region. This is intended to suppress a cell gap defect in the pixel region due to the fact that a desired cell gap cannot be obtained in the BM formation region by arranging a multi-gap formation layer and a spacer in the BM formation region. The spacer is not limited to being arranged for each pixel, and may be arranged only for a pixel of a specific color or may be randomly arranged.
On the other hand, a wiring group for similar signals, for example, a plurality of video (video) signal wirings may be extended in alignment with the arrangement direction of the multi-gap forming layer. In such a case, since the wiring faces the counter electrode on the multi-gap forming layer at a short distance, a parasitic capacitance is generated. Conventionally, for example, as illustrated in FIG. 6, the wirings 12a to 12c and the multi-gap layer 23 are formed. The overlapping area differs depending on the individual wirings 12a to 12c. For this reason, the load is different between the wirings 12a to 12c, and delay variation occurs in the signals applied to the wirings 12a to 12c, causing a reduction in display quality. Such a phenomenon occurs, for example, in a liquid crystal display device incorporating the signal drive circuit shown in FIG. 4 or a liquid crystal display device having a simple test signal drive circuit shown in FIG. It was confirmed by the applied video signal wiring.
However, conventionally, in a CF-side multi-gap LCD, a multi-gap forming layer for forming a step formed on a CF substrate is opposed to a specific signal wiring such as a video signal wiring formed on the element-side substrate. There is no example of whether or not to do so, and there is no example that focuses on the parasitic capacitance generated between the counter electrode on the multi-gap formation layer and the wiring, and has not been studied. Therefore, there is room for improvement in optimizing the structural positional relationship between the specific wiring and the multi-gap forming layer that require the same signal delay and waveform rounding.
Japanese Patent Laid-Open No. 2002-72220 (pages 2, 13 and 1) JP 2004-86108 A (page 2, 26, FIG. 2) Japanese Unexamined Patent Publication No. 2004-157148 (pages 2, 12 and 3)

The present invention has been made in view of the above-described present situation, and an object of the present invention is to provide a liquid crystal display device capable of preventing a deterioration in display quality due to a load of video (video) signals and the like and delay variation. is there.

The inventors have conducted various studies on a multi-gap liquid crystal display device having a wiring group on one substrate and a plurality of multi-gap forming layers for forming a step and a counter electrode on the other substrate. We paid attention to the arrangement relationship between the multi-gap forming layer and the wiring group in the wiring group region. In addition, by making the overlapping area of the counter electrode on the multi-gap forming layer substantially the same between the individual wires constituting the wiring group, the counter electrode on the multi-gap forming layer in the wiring group region and the individual wiring It is found that the difference in the parasitic capacitance generated between them is reduced, the variation in the signal delay between the wirings is reduced, and stable image display can be realized, and the above problems can be solved brilliantly. The present inventors have arrived at the present invention by conceiving what can be done.

That is, the present invention is a liquid crystal display device including a pair of opposing substrates as essential, having a wiring group on one substrate, and having a plurality of multi-gap forming layers and counter electrodes on the other substrate. The liquid crystal display device is a liquid crystal display device in which the individual wirings constituting the wiring group have substantially the same overlapping area with the counter electrode on the multi-gap forming layer.
The present invention is described in detail below.

The liquid crystal display device of the present invention includes a pair of opposed substrates as essential elements, has a wiring group on one substrate, and has a plurality of multi-gap forming layers and counter electrodes on the other substrate. The configuration of the liquid crystal display device of the present invention is not particularly limited with respect to the other components as long as such components are essential, but usually a liquid crystal material is provided between a pair of opposing substrates. At least one substrate is filled with a low-temperature polysilicon TFT (thin film transistor), amorphous silicon TFT, TFD (thin film diode), switching element such as MIM (metal-insulator-metal), interlayer insulating film, color filter (CF), a black matrix (BM), a pixel electrode, an alignment film, and the like are provided as appropriate.

The material of the substrate is not particularly limited, and examples thereof include glass and quartz. The wiring group is a general term for a plurality of wirings. For example, each of the RGB video signal lines 12a to 12c connected to the data signal driving circuit 30 as shown in FIG. 4 is simple as shown in FIG. One RGB signal signal line 12a to 12c connected to the test data signal driving circuit 31 is included. The video signal line may be a plurality of RGB lines. The number of wirings constituting the wiring group and the wiring spacing are not particularly limited, but the wiring spacings are substantially the same in order to obtain the same effect by making the parasitic capacitance generated in each wiring substantially the same. Is preferred. Moreover, it is preferable that the wiring which comprises a wiring group is arrange | positioned in the same plane, and it is preferable to have a substantially the same shape and dimension. Examples of the material of the wiring include metals such as aluminum and copper. The signal applied to the wiring group may be an analog signal, a digital signal, or a combination thereof. The multi-gap forming layer is for forming a step (convex portion) on the substrate surface. That is, in the region where the multi-gap forming layer is formed, the distance between the substrates is usually smaller than the other regions by the height of the multi-gap forming layer. Such a multi-gap forming layer is provided for the purpose of realizing a transflective liquid crystal display, optimal design for each color pixel, and the like. The shape and dimensions of the multi-gap forming layer are not particularly limited, but are preferably substantially the same in each multi-gap forming layer. The counter electrode is usually formed on the entire substrate surface with a transparent material such as indium tin oxide (ITO).

In the liquid crystal display device of the present invention, the overlapping area between the individual electrodes constituting the wiring group and the counter electrode on the multi-gap forming layer is substantially the same. Note that the overlapping area of the wiring and the counter electrode on the multi-gap forming layer means that the wiring and the counter electrode on the multi-gap forming layer are in a plan view from the normal direction of the substrate surface with the substrates bonded together. The area of the overlapping part. In the present invention, the overlapping areas of the respective wirings and the counter electrode on the multi-gap forming layer are made substantially the same as described above, so that the individual electrodes constituting the wiring group and the counter electrode on the multi-cap forming layer in the wiring group region are formed. As a result, it is possible to reduce the variation in the parasitic capacitance with the other wiring, so that it is possible to effectively reduce the signal delay variation in the wirings constituting the wiring group and realize a stable image display.
In the present invention, the overlapping area of each wiring and the counter electrode on the multi-gap forming layer is preferably the same, but in the range where the effects of the present invention can be exhibited, that is, in the substantially same range. I just need it. The size of the overlapping area between the individual wiring and the counter electrode on the multi-gap forming layer is not particularly limited, but is preferably as small as possible from the viewpoint of reducing the wiring capacity.

Hereinafter, preferred embodiments of the liquid crystal display device of the present invention will be described in detail.
The arrangement pattern of the multi-gap forming layer is preferably different between the pixel region and the wiring group region outside the pixel region. Thereby, the arrangement pattern of the multi-gap forming layer in the wiring group region can be optimized according to the arrangement pattern of the wiring group. As a result, it is possible to realize a stable image display by reducing variations in signal delay between wirings. In addition, since the capacity of video signals can be reduced by optimizing the layout pattern, the degree of freedom in wiring design such as longer wiring and reduced wiring width is increased, and various panel designs such as making the screen horizontally long are possible. It becomes possible. The term “outside of the pixel area” represents, for example, a frame area provided around the screen, and the wiring group area is an area that overlaps with the area where the wiring group is formed when viewed from the normal direction of the substrate surface. Represents. The arrangement pattern of the multi-gap forming layer is not particularly limited, and examples thereof include a stripe shape and a lattice shape. Also, the different arrangement pattern of the multi-gap forming layer means that the arrangement form of the multi-gap forming layer when viewed in plan from the normal direction of the substrate surface is different, and the arrangement interval and pattern shape of the multi-gap forming layer are different. It may be different, and may be a form in which the multi-gap forming layer is not disposed in one region.
In the present invention, the arrangement pattern of the multi-gap formation layer is substantially the same in the pixel area and the wiring group area outside the pixel area, and the arrangement pattern of the wiring group in the wiring group area is the arrangement pattern of the multi-gap formation layer. You may optimize according to. In this configuration, the frame region may be large, but it may be advantageous in preventing cell gap defects and liquid crystal alignment unevenness in the wiring group region.

The wiring group is preferably one to which a similar signal is applied. For example, a mode in which video signals of different colors are applied to individual wirings constituting the wiring group is preferable. In such a form, the same signal delay and waveform rounding are required for each wiring constituting the wiring group, but according to the present invention, the counter electrode and the wiring on the multi-cap forming layer are arranged in the wiring group region. Since it is possible to reduce variations in parasitic capacitance with individual wirings constituting the group, it is possible to sufficiently reduce signal delay variations and waveform variations of the wirings constituting the wiring group.
Moreover, it is preferable that the said wiring group is extended | stretched substantially parallel. The wiring group extending substantially in parallel means a wiring group in which individual wirings constituting the wiring group are arranged substantially in parallel with each other, and an example thereof is a dotted line in FIGS. 4 and 5. Shown in the section. Normally, when a similar signal such as a video signal for each color is applied to each wiring constituting the wiring group, the wiring group is often extended substantially in parallel due to the configuration of the liquid crystal display device. The device design for making the overlapping area of each wiring and the multi-gap forming layer substantially the same between the wirings can be facilitated.

In the liquid crystal display device, it is preferable that the wiring arrangement interval and the multi-gap forming layer arrangement interval in the wiring group region are substantially the same. This makes it easy to design a device in which the overlapping area between the individual wirings constituting the wiring group and the counter electrode on the multi-gap forming layer is substantially the same between the individual wirings. Delay variation can be more easily reduced. Note that the arrangement interval of the wiring group and the multi-gap forming layer in the wiring group region is not particularly limited.

The liquid crystal display device includes a spacer between the substrates, and the wiring group region includes a multi-gap forming layer at least in a spacer arrangement region, and a mixed region and a non-formed region of the multi-gap forming layer are mixed. It is preferable. In this embodiment, since the spacer is disposed on the multi-gap forming layer, that is, in the region where the liquid crystal is thin, the thickness of the liquid crystal layer can be easily controlled. In addition, since the formation area and non-formation area of the multi-gap forming layer are mixed in the wiring group area, the overlapping area between the multi-gap formation layer and the wiring can be effectively reduced, and the signal delay of the wiring can be reduced. It is possible to effectively suppress the deterioration of display quality due to. The spacer is not particularly limited, but a columnar spacer is preferable. For example, a single-layer photo spacer (PS), a stacked PS in which a plurality of colored layers are stacked, and the like are preferably used.

In the liquid crystal display device, the pixel region is preferably a mixed region of a wide gap region and a narrow gap region by a multi-gap forming layer, and the wiring group region is preferably a wide gap region in which no multi-gap forming layer is present. The wide gap region is a region having a relatively wide space between the opposing substrates, that is, a region where the multi-gap forming layer is not formed, and the narrow gap region is a space between the opposing substrates. This is a relatively narrow region, that is, a region where a multi-gap forming layer is formed on one substrate. According to such a liquid crystal display device, since the pixel region is composed of a mixed region of a wide gap region and a narrow gap region by a multi-gap forming layer, for example, a transmission electrode is provided in a wide gap region and a reflection electrode is provided in a narrow gap region. By providing, it can be suitably used as a transflective liquid crystal display device or the like in which the path lengths of light passing through the liquid crystal layer in the transmissive region and the reflective region are substantially the same. In addition, since the wiring group region is composed of a wide gap region without the multi-gap forming layer, the overlapping area between the counter electrode on the multi-gap forming layer and the wiring constituting the wiring group becomes zero, and the counter electrode and the wiring As a result, it is possible to effectively reduce the parasitic capacitance generated between the first and second lines. Therefore, it is possible to reduce signal variations of individual wirings and to effectively reduce deterioration in display quality due to signal delay.

Preferably, the liquid crystal display device includes a spacer between the substrates, and the spacer arrangement in the pixel region and the spacer arrangement in the wiring group region are substantially the same. Thereby, it is possible to suppress a cell gap defect in the pixel region due to a desired cell gap not being obtained in the wiring group region. The spacer arrangement pattern is not particularly limited, but a dot shape is preferable. In the liquid crystal display device, it is more preferable that the spacer arrangement in the pixel area, the spacer arrangement in the wiring group area, and the spacer arrangement in the drive circuit area are substantially the same, and the spacer arrangement is substantially the same in all areas. Further preferred.

The liquid crystal display device includes a spacer between substrates, and the multi-gap forming layer includes a first arrangement pattern that occupies a pixel area, a second arrangement pattern that occupies a wiring group area, a pixel area, and a wiring group area. And a third arrangement pattern with spacers. According to this, by providing the third arrangement pattern of the multi-gap forming layer in the region between the pixel region and the wiring group region, the cell gap unevenness and the liquid crystal alignment unevenness in the wiring group region can be reduced. And the influence on the alignment of the liquid crystal can be reduced. Therefore, even if the arrangement pattern of the multi-gap forming layer in the wiring group region is changed to a different one from the pattern in the pixel region in order to reduce the variation in parasitic capacitance generated between the wiring and the counter electrode, the arrangement pattern is changed. The previous display quality can be ensured.

The liquid crystal display device includes a spacer between substrates, and the multi-gap forming layer includes a first arrangement pattern that occupies a pixel region, a second arrangement pattern that occupies a wiring group region, and a region outside the wiring group region. And a fourth arrangement pattern with spacers. According to this, by providing the fourth arrangement pattern of the multi-gap forming layer in the region outside the wiring group region, it is possible to reduce the influence of the cell gap unevenness in the wiring group region on the cell gap in the pixel region. . Therefore, even if the arrangement pattern of the multi-gap forming layer in the wiring group region is changed to a different one from the pattern in the pixel region in order to reduce the variation in parasitic capacitance generated between the wiring and the counter electrode, the arrangement pattern is changed. The previous display quality can be ensured.
In the present invention, the liquid crystal display device includes a spacer between the substrates, and the multi-gap forming layer includes a first arrangement pattern that occupies a pixel region, and a second arrangement pattern that occupies a wiring group region; A form including a third arrangement pattern that occupies an area between the pixel area and the wiring group area and includes a spacer and a fourth arrangement pattern that occupies an area outside the wiring group area and includes a spacer is more preferable.

Since the liquid crystal display device of the present invention has a plurality of multi-gap forming layers, it can be suitably used as a transflective liquid crystal display device. As a preferred form when the liquid crystal display device of the present invention is applied to a transflective liquid crystal display device, a reflective region such as an aluminum electrode is formed in a region facing the multi-gap forming layer in the pixel region. And a transparent region such as an indium tin oxide (ITO) electrode is formed in the other region. In this embodiment, the surface of the reflective electrode is usually subjected to fine unevenness processing.

According to the liquid crystal display device of the present invention, it is possible to reduce variations in parasitic capacitance generated between individual wirings constituting the wiring group and the counter electrode on the multi-gap forming layer. Thus, stable image display can be realized by reducing variations in signal delay.

Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these examples.

Example 1
FIG. 1A is a schematic cross-sectional view illustrating a configuration of a color filter (CF) side multi-gap liquid crystal display device according to a first embodiment, and FIG. 1B is a cross-sectional view of the liquid crystal display device illustrated in FIG. It is a front schematic diagram which shows a mode when it planarly views along a normal line direction. Note that R, G, and B in FIG. 1B indicate red, green, and blue pixels, respectively.
The liquid crystal display device shown in FIG. 1A has a structure in which a liquid crystal layer 17 is sandwiched between an element side substrate 100 and a color filter (CF) substrate 200.
The element-side substrate 100 includes a parallel-stretched video wiring group 12 (VR12a, VG12b, and VB12c), a data signal driving circuit (or inspection data signal driving circuit) 13, and a pixel switching element layer 14 provided on the glass substrate 10. And an interlayer insulating film 11 provided so as to cover them, and a pixel electrode 15 (transparent electrode 15a and reflective electrode 15b) connected to the pixel switching element layer 14 via a contact hole 9 provided in the interlayer insulating film 11 ) And an alignment film (not shown) provided so as to cover the pixel electrode 15 and the interlayer insulating film 11. On the other hand, the CF substrate 200 covers the color filter 21 and the black matrix (BM) layer 22 provided on the glass substrate 20, the multi-gap forming layer 23 arranged in a stripe pattern, and so on. The counter electrode 24 thus formed and an alignment film (not shown) provided on the counter electrode 24 are provided. A columnar spacer 25 is provided on the counter electrode 24 on the surface of a part of the multi-gap forming layer 23, and the thickness (cell gap) of the liquid crystal layer 17 is kept constant in each region. .
According to the liquid crystal display device of this embodiment, as shown in FIG. 1B, the overlapping areas of the video signal wirings 12a to 12c and the multi-gap forming layer 23 are equal to each other in the individual wirings 12a to 12c. In addition, the arrangement pattern of the multi-gap forming layer 23 in the wiring group region is different from the arrangement pattern in other regions (pixel region, drive circuit region, and outermost peripheral region). Therefore, according to the liquid crystal display device of the present embodiment, the parasitic capacitance generated between the counter electrode 24 and the wirings 12a to 12c of the individual video signals constituting the wiring group 12 is substantially the same. Delay variation is reduced, and stable image display can be realized.

(Example 2)
FIG. 2A is a schematic cross-sectional view illustrating a configuration of a CF-side multi-gap liquid crystal display device according to the second embodiment, and FIG. 2B illustrates the liquid crystal display device illustrated in FIG. It is a front schematic diagram which shows a mode when planarly viewing along. Note that R, G, and B in FIG. 2B indicate red, green, and blue pixels, respectively.
The liquid crystal display device shown in FIG. 2A has the same configuration as the liquid crystal display device of Example 1 except that the arrangement pattern of the multi-gap forming layer 23 in the region where the wiring group 12 is formed is different. In the liquid crystal display device of this embodiment, as shown in FIG. 2, in the wiring group region, multi-gap formation is performed so that the overlapping areas of the individual video signal wirings 12a to 12c and the multi-gap forming layer 23 are substantially the same. The multi-gap formation layer 23 is provided so that the formation region and the non-formation region coexist depending on the arrangement of the layer 23 and the arrangement of the spacer 25. Therefore, according to the liquid crystal display device of the present embodiment, the difference in parasitic capacitance generated between the counter electrode 24 and the wirings 12a to 12c for the individual video signals is reduced, so that variations in signal delay between the wirings are reduced. Thus, stable image display can be realized. In addition, since the overlapping area between the multi-gap forming layer 23 and the wirings 12a to 12c is small, it is possible to effectively reduce display quality deterioration due to signal delay of the wiring.

(Example 3)
FIG. 3A is a schematic cross-sectional view illustrating a configuration of a CF-side multi-gap liquid crystal display device according to a third embodiment, and FIG. 3B illustrates the liquid crystal display device illustrated in FIG. It is a front schematic diagram which shows a mode when planarly viewing along. Note that R, G, and B in FIG. 3B indicate red, green, and blue pixels, respectively.
The liquid crystal display device shown in FIG. 3 has the same configuration as that of the liquid crystal display device of Example 1 except that the pattern of the multi-gap forming layer 23 in the region where the wiring group 12 is formed is different. According to the liquid crystal display device of this embodiment, as shown in FIG. 3, the multi-gap forming layer 23 in the wiring group region is arranged avoiding the video wiring group 12. Therefore, according to the liquid crystal display device of the present embodiment, the difference in parasitic capacitance generated between the counter electrode 24 and the individual video signal wirings 12a to 12c is effectively reduced. Since variations can be reduced and signal delay can be effectively reduced, display quality can be further improved.

(A) is a cross-sectional schematic diagram which shows the structure of the color filter (CF) side multigap-type liquid crystal display device which concerns on Example 1, (b) is a liquid crystal display device shown to (a) by the substrate surface method. It is a front schematic diagram which shows a mode when it planarly views along a linear direction. (A) is a cross-sectional schematic diagram which shows the structure of the liquid crystal display device of the CF side multigap system which concerns on Example 2, (b) is a liquid crystal display device shown to (a) along a substrate surface normal line direction. It is a front schematic diagram which shows a mode when planarly viewing. (A) is a cross-sectional schematic diagram which shows the structure of the liquid crystal display device of CF side multigap type which concerns on Example 3, (b) is a liquid crystal display device shown to (a) along a substrate surface normal line direction. It is a front schematic diagram which shows a mode when planarly viewing. It is a front schematic diagram which shows the basic structure of the liquid crystal display device incorporating the drive circuit. It is a front schematic diagram which shows the basic structure of the liquid crystal display device incorporating the test | inspection drive circuit etc. (A) is a cross-sectional schematic diagram showing the configuration of a conventional CF-side multi-gap liquid crystal display device, and (b) is a plan view of the liquid crystal display device shown in (a) along the normal direction of the substrate surface. It is a front schematic diagram which shows a mode when doing.

Explanation of symbols

1: Video signal input terminal 2: Scan signal input terminal 3: Data signal input terminal 4: Test scan signal input terminal 5: Test data signal input terminal 9: Contact hole 10: Glass substrate (thin film transistor array substrate side)
11: Interlayer insulating film 12: Video (video) signal wiring group 12a: Red signal wiring (VR)
12b: Green signal wiring (VG)
12c: Blue signal wiring (VB)
13: Data signal driving circuit (or inspection data signal driving circuit)
14: Pixel switching element layer 15: Pixel electrode 15a: Transparent electrode 15b: Reflective electrode 16: Thin film transistor (TFT)
17: Liquid crystal layer 18: Scanning line 19: Data line 20: Glass substrate (color filter substrate side)
21: Color filter (colored layer)
22: Black matrix (BM)
23: Multi-gap forming layer 24: Counter electrode 25: Spacer 30: Data signal driving circuit 31: Inspection data signal driving circuit 40: Scanning signal driving circuit 41: Inspection scanning signal driving circuit 100: Element side substrate, thin film transistor (TFT) ) Array substrate 200: Color filter (CF) substrate

Claims (11)

A liquid crystal display device including a pair of opposing substrates as essential, having a wiring group on one substrate, and having a plurality of multi-gap forming layers and counter electrodes on the other substrate,
In the liquid crystal display device, the overlapping areas of the individual electrodes constituting the wiring group and the counter electrode on the multi-gap forming layer are substantially the same,
The wiring group is a plurality of video signal lines outside the pixel region,
The multi-in-gap formation layer is formed region, the distance between the substrates by the amount of the height of the multi-gap layer is rather small compared to the other regions,
The liquid crystal display device is characterized in that a multi-gap forming layer is provided in a region outside the pixel region where a wiring group is formed in plan view from the normal direction of the substrate surface. apparatus. The arrangement pattern of the multi-gap forming layer is such that when a region overlapping with a region where a wiring group is formed when viewed in plan from the normal direction of the substrate surface is defined as a wiring group region, The liquid crystal display device according to claim 1, wherein the liquid crystal display device is different from the wiring group region. In the wiring group, a similar signal is applied,
3. The liquid crystal display device according to claim 1, wherein the similar signal is a video signal for each color. The liquid crystal display device according to claim 1, wherein the wiring group is extended substantially in parallel. A liquid crystal display device including a pair of opposing substrates as essential, having a wiring group on one substrate, and having a plurality of multi-gap forming layers and counter electrodes on the other substrate,
In the liquid crystal display device, the overlapping areas of the individual electrodes constituting the wiring group and the counter electrode on the multi-gap forming layer are substantially the same,
The wiring group is a plurality of video signal lines outside the pixel region, and is extended substantially in parallel.
The liquid crystal display device is characterized in that, when viewed in plan from the normal direction of the substrate surface, the arrangement interval of the wirings in the region where the wiring group is formed and the arrangement interval of the multi-gap forming layer are substantially the same. apparatus. The liquid crystal display device includes a spacer between substrates,
When a region overlapping with a region where a wiring group is formed when viewed in plan from the normal direction of the substrate surface is defined as a wiring group region, the wiring group region is provided with a multi-gap forming layer at least in a spacer arrangement region. The liquid crystal display device according to claim 1, wherein a formation region and a non-formation region of the multi-gap formation layer are mixed. In the liquid crystal display device, the pixel region includes a mixed region of a wide gap region and a narrow gap region by a multi-gap forming layer, and overlaps with a region where a wiring group is formed when viewed from the normal direction of the substrate surface 5. The liquid crystal display device according to claim 1, wherein the wiring group region is formed of a wide gap region in which no multi-gap forming layer exists. The liquid crystal display device includes a spacer between the substrates when a region overlapping the region where the wiring group is formed when viewed in plan from the normal direction of the substrate surface is defined as a wiring group region, and a spacer arrangement in the pixel region The liquid crystal display device according to claim 1, wherein the spacer arrangement in the wiring group region is substantially the same. The liquid crystal display device includes a spacer between substrates,
When a region overlapping with a region where a wiring group is formed when viewed in plan from the substrate surface normal direction is defined as a wiring group region, the multi-gap forming layer includes a first arrangement pattern that occupies a pixel region, 9. A second arrangement pattern that occupies a wiring group area, and a third arrangement pattern that occupies an area between the pixel area and the wiring group area and includes a spacer. A liquid crystal display device according to 1. The liquid crystal display device includes a spacer between substrates,
When a region overlapping with a region where a wiring group is formed when viewed in plan from the substrate surface normal direction is defined as a wiring group region, the multi-gap forming layer includes a first arrangement pattern that occupies a pixel region, The liquid crystal according to claim 1, comprising: a second arrangement pattern occupying a wiring group region; and a fourth arrangement pattern occupying a region outside the wiring group region and accompanied by a spacer. Display device. 11. The liquid crystal display device according to claim 1, wherein the multi-gap forming layer provides a cell gap between a transmissive region and a reflective region in a transflective liquid crystal display device.

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