JP2001021900A - Liquid crystal display device and method of manufacturing the same - Google Patents

Abstract

(57) Abstract: Provided is a liquid crystal display device which suppresses display unevenness due to uneven alignment film generated around spacer pillars, and a method of manufacturing the same. SOLUTION: An alignment film is provided between an array substrate having an opening in a central region of a pixel electrode and a region excluding the opening as a light shielding region, and an opposing substrate provided opposite to the array substrate. When the liquid crystal with the liquid crystal is enclosed, the liquid crystal is arranged in the light shielding area between the array substrate and the counter substrate, and one of the positions substantially equidistant to the adjacent opening portion in the arrangement direction of the scanning line. And a spacer column disposed at least every other pixel in the signal line arrangement direction. Forming spacer pillars to control the thickness of the liquid crystal layer on the array substrate, applying an alignment film on the array substrate, pre-baking this alignment film, and then pre-baking the alignment film when pre-baking the alignment film Temperature to be about 140 ° C. or higher.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection type liquid crystal display device which particularly requires high contrast and a method of manufacturing the same.

[0002]

2. Description of the Related Art Front-type and rear-type projection type liquid crystal display devices which are inexpensive and have a free display size have been commercialized using liquid crystal display devices. This projection type liquid crystal display device uses a twisted nematic liquid crystal, and sets a rubbing angle of an alignment film formed on an array substrate and a counter substrate to 45 degrees in a clockwise direction with respect to a horizontal direction and to a rubbing angle in the other direction. A liquid crystal display device which is set at 45 degrees clockwise and rubs at 90 degrees perpendicular to each other is used.

FIG. 2 is a system diagram of an optical system for explaining the operation principle of a projection type liquid crystal display device using a dichroic mirror and a liquid crystal display device with microlenses and not using a color filter. This is for convenience only shown for a set of pixels of R, G and B in the liquid crystal display device, and white light from the light source 1 is incident on the dichroic mirror 2 via a lens system. The incident light is split by the dichroic mirror 2 and converted into parallel lights 3 having different incident angles, and then enters the microlens array 4 arranged on the light incident side of the liquid crystal panel 5.
The liquid crystal panel 5 includes an array substrate 6 on which a thin film transistor (hereinafter abbreviated as TFT) is formed, and an opposing substrate 7 facing the array substrate 6. A microlens is provided for each set of pixels of the liquid crystal panel 5 corresponding to RGB. Each microlens condenses the incident light of each color to the opening of each color pixel. The light transmitted through the liquid crystal panel 5 is incident on the projection lens system 8.

FIG. 3 is a schematic diagram showing a state in which the micro lens 4 condenses each color light to the opening of each color pixel. In FIG. 1, the liquid crystal panel 5 includes an array substrate 6 and a counter substrate 7 facing the array substrate 6. The micro lens array 4 condenses each of the RGB light beams at different positions in the horizontal direction on the back surface of the counter substrate 7. Openings 11, 12, and 13 are formed in the array substrate 6 corresponding to these light condensing positions. As a result, the openings 11, 12,
13 emits each color light of RGB. By doing so, color display can be performed without using a color filter, and light loss due to the color filter is also eliminated, so that miniaturization and cost reduction of the optical system can be achieved.

In the single-panel type liquid crystal display device for a projector as described above, three times the number of pixels is required as compared with the three-panel type liquid crystal display device, and it is necessary to reduce the cost of an optical system such as a projection lens. For this reason, a liquid crystal display device using a polysilicon TFT technology capable of designing a high definition pixel has been developed.

FIG. 4 is a plan view of the liquid crystal display device as viewed from the light incident side, and FIG. 5 is a perspective view of the liquid crystal display device with a part thereof cut away. In each of these drawings, the liquid crystal display device 10 has a microlens array 4 mounted on the back of a liquid crystal panel 5. The liquid crystal panel 5 includes an array substrate 6 and a counter substrate 7, and a liquid crystal 9 is sealed between them.

As will be described in detail later, the array substrate 6
A plurality of scanning lines arranged substantially in parallel on a light-transmitting substrate, a plurality of signal lines intersecting these scanning lines and arranged substantially in parallel via an insulating layer, and these scanning lines and signal lines And a switching circuit composed of a TFT provided at each intersection of the scanning line and the signal line.

A signal line driving circuit 15 for driving signal lines is provided around the display area 17 at the center of the screen.
A scanning line driving circuit 16 for driving the scanning lines is provided. One end of a flexible printed circuit board 18 for supplying operating power to the signal line driving circuit 15 and the scanning line driving circuit 16 and for supplying a control signal is connected.

FIG. 6 is an equivalent circuit diagram of 3 × 3 pixels of the array substrate 6 to which the present invention is applied. In the figure, signal lines 21 are arranged parallel to each other in the vertical direction of the screen, and scanning lines 22 are arranged parallel to each other in the horizontal direction of the screen. In the vicinity of each intersection between the signal line 21 and the scanning line 22, T
A switching circuit 25 including FTs 23 and 24 connected in series is provided. The gates of the TFTs 23 and 24 constituting the switching circuit 25 are connected to the scanning line 22. One end of the switching circuit 25 is connected to the signal line 21, and the other end is connected to a pixel electrode 26 forming a liquid crystal pixel 27. Further, a capacitor electrode plate 28 is connected to the other end of the switching circuit 25, and the capacitor electrode plate 28 is connected to an auxiliary capacitor line 29 common to all the liquid crystal pixels 27.
And an insulating film therebetween, thereby forming an auxiliary capacitance.

With this configuration, the scanning lines 22 are sequentially scanned by time division, and when a signal voltage is applied to the selected signal line, the TFTs 23 and 24 connected to the scanning line 22 at the scanning timing are turned on. A signal voltage is applied from the signal line 21 to the pixel electrode 26 forming the liquid crystal pixel 27 to control the transmittance of the liquid crystal pixel 27.

FIGS. 7A and 7B are a plan view and a partial sectional view showing a detailed configuration of the array substrate 6 corresponding to the equivalent circuit shown in FIG. 6, and the plan view shown in FIG. In the figure, the interlayer insulating film is removed for easy understanding, and (b) also shows the interlayer insulating film. In the figure, the channels of the TFTs 23 and 24 are formed on the glass substrate 20 and the capacitance electrode plates 28 are formed.
Are laminated and patterned in an island shape. The upper end of the polycrystalline silicon shown in the drawing has a contact portion 31 for the pixel electrode 26, and the lower end shown in the drawing has a contact portion 32 for the signal line 21.

A gate insulating film 33 is formed on the polycrystalline silicon.
A scanning line 22 and a storage capacitor line 29 having a hook-shaped portion 22a which is partially notched are formed through the TFT. By implanting impurities in this state, TFTs 23 and 24 using the scanning line 22 as a gate electrode and auxiliary lines are formed. A capacitance is formed. The auxiliary capacitance line 29 on the gate insulating film 33 has a trunk portion 29 a formed in parallel with the scanning line 22 and a branch portion 29 b divided along the capacitance electrode plate 28. Further, the signal line 2 is provided on the scanning line 22 and the auxiliary capacitance line 29 via the first interlayer insulating film 34.
1 is formed. The signal line 21 is connected to the contact portion 3
2, the TFT 23 as one end of the switching circuit
Connected to the source side. In this case, the TFTs 23 and 24
Are covered by the signal line 21 so that the TFTs 23, 2
The line width of the part facing 4 is widened.

A second interlayer insulating film 35 is formed on the signal line 21.
Is formed on the second interlayer insulating film 35, and a light-shielding film 36, which is partially shaded, is formed. Then, the light-shielding film 36 is connected to the capacitor electrode plate 28 by the contact part 31. Further, a third interlayer insulating film 37 is formed by partially exposing the light-shielding film 36, and the pixel electrode 26 indicated by hatching on the edge is formed thereon. The pixel electrode 26 is connected to the capacitance electrode plate 28 via the light-shielding film 36 and the contact portion 31.

Here, the pixel electrode 26 is provided in a region surrounded by the signal line 21 and the scanning line 22, respectively. The scanning line 22 for driving pixels is disposed at the lower end of the pixel electrode 26, and the TFT 23 is disposed on the right side. , 24, a capacitance electrode plate 28, an auxiliary capacitance line 29, and a signal line 21.

As a result, the signal line 21 is
2 is connected to the capacitor electrode 28 via a switching circuit composed of a series connection circuit of the TFT 23 and the TFT 24, and the capacitor electrode 28 is connected to the pixel electrode 26 via the contact part 31 and the light shielding film 36. Figure 6
A circuit that matches the equivalent circuit shown in FIG.

It is very important to control the thickness of the liquid crystal layer sealed between the array substrate 6 and the counter substrate 7 constituting the liquid crystal panel 5 from the viewpoint of display quality. If the thickness of the liquid crystal layer, that is, the cell gap is not constant, display unevenness occurs. Therefore, in the projection type liquid crystal display device, a plastic sphere called Micropearl (registered trademark) is disposed between the array substrate 6 and the counter substrate 7 as a spacer.

However, these micropearls have a problem that they cause unwanted light leakage or display unevenness due to poor light distribution around the micropearls. For this reason, controlling the cell gap without using micropearls has been used particularly for small-sized panels of about 1 to 3 inches or less using high-temperature polysilicon technology. However, this technique still has a problem that it is difficult to control the in-plane cell gap, and cannot be controlled with a panel size of 2 inches or more. Therefore, a method of controlling a cell gap by forming a spacer pillar on an array substrate has been proposed.

FIG. 8 shows a liquid crystal display device 1 having spacer columns.
FIG. 8 is a partial cross-sectional view of FIG. 7, and the same elements as those described with reference to FIG.
Here, in the peripheral region where the contact portions 31 and 32 are formed, the signal line 21, the scanning line 22, and the auxiliary capacitance line 29 which intersect each other are present, and further, a light shielding film 36 which positively shields light.
Are formed as light shielding areas. A spacer column 40 made of an organic resin or the like is formed on the third interlayer insulating film 37 in the light-shielding region. After the spacer pillars 40 are formed, an alignment film 41 for providing an alignment and a tilt pretilt angle suitable for the operation mode of the liquid crystal is formed on the array substrate. The alignment film 41 is also formed on the spacer pillar 40 and its periphery by printing or the like. Further, an alignment film 42 having a similar function is formed on the opposite surface of the opposite substrate 7. As described above, by forming the spacer pillars 40 in the light-shielding region, it is possible to eliminate the phenomenon that the micropearls appear as bright spots when micropearls are used.

[0019]

As described above, display irregularities were hardly detected as far as the liquid crystal display device in which spacer columns made of organic resin or the like were formed on the array substrate was directly viewed. However, the inventors have found that display unevenness occurs in a projection type liquid crystal display device. That is, in the array substrate structure as shown in FIG. 8, initially, the spacer columns 40 are arranged every other scanning line in the direction in which the scanning lines are arranged, and every six pixels (18 picture elements) in the direction in which the signal lines are arranged. Had formed. During the formation of this alignment film, the alignment film 41 is sucked up around the spacer pillars by surface tension, and the thickness of the alignment film 41 around each spacer pillar 40 becomes uneven, thereby causing the thickness of the liquid crystal and the pretilt angle. It has been found from the analysis results of the present inventors that the voltage-transmittance characteristics differ slightly, resulting in a slightly different region and display unevenness.

In particular, in the pixel structure shown in FIG. 7 and the arrangement of the spacer pillars shown in FIG. 8, picture elements constituting pixels are arranged in a delta shape. The unevenness of the alignment film thickness generated between the spacer columns provided corresponding to the lines is a picture element corresponding to the even-numbered scanning lines, that is,
The unevenness of the film thickness was caused in the openings of the picture elements that were close in distance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress a display unevenness due to an alignment film unevenness generated around a spacer pillar, thereby providing a liquid crystal display device having a high display quality and its manufacture. There is a way to provide.

[0022]

The invention according to claim 1 is
A plurality of scanning lines arranged substantially in parallel on a light-transmitting substrate, a plurality of signal lines intersecting these scanning lines via an insulator, and a plurality of signal lines and scanning lines arranged substantially in parallel with each other; An array substrate having a pixel electrode provided in a region surrounded by each of the signal lines, the central region of the pixel electrode being an opening, and a region excluding this opening being a light-shielding region; In a liquid crystal display device having a counter substrate and a liquid crystal sealed via an alignment film between the array substrate and the counter substrate, the liquid crystal display device is disposed in a light-shielding region between the array substrate and the counter substrate, At positions substantially equidistant to adjacent openings, spacer columns are provided every other pixel in the arrangement direction of the scanning lines and at least every other pixel in the arrangement direction of the signal lines. And

According to a second aspect of the present invention, in the liquid crystal display device according to the first aspect, the openings correspond to red, blue, and green, respectively, and the spacer pillar has another opening corresponding to the opening corresponding to blue. It is characterized in that it is made to be adjacent more than it is.

According to a third aspect of the present invention, in the liquid crystal display device according to the first or second aspect, a spacer column is provided in at least one of an inner region and an outer region of a seal for enclosing liquid crystal. I do.

According to a fourth aspect of the present invention, in the liquid crystal display device according to the third aspect, the spacer columns disposed outside the seal have a higher density than the spacer columns disposed inside the seal. It is characterized by being rough.

According to a fifth aspect of the present invention, a plurality of scanning lines arranged substantially in parallel on a light-transmitting substrate, intersect these scanning lines via an insulator, and are arranged substantially in parallel with each other. Forming an array substrate having pixel electrodes provided in regions respectively surrounded by a plurality of provided signal lines, scanning lines and signal lines, and forming spacer pillars on the array substrate for controlling the thickness of a liquid crystal layer And a step of applying an alignment film on an array substrate, a step of temporarily firing the alignment film, and a step of main firing the alignment film.
The temperature for temporarily firing the alignment film is set to about 140 ° C. or higher.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the preferred embodiments shown in the drawings. Before that, the display quality not only depends on the unevenness of the thickness of the alignment film but also on the alignment. An experimental result showing that it changes greatly depending on the process conditions such as the temperature at the time of pre-baking after coating the film will be described. FIG.
In the pixel structure shown in FIG.
m, height 71 μm, and spacer density (A) 3 picture elements (1
(B) every 6 pixels (2 pixels), (C) 18
Changed every other pixel (six pixels) and randomly set spacer pillars by calculation (D) 54 at random
Table 1 shows the results of examining the occurrence rate of display unevenness in the case where a pixel element was prepared by arranging one spacer column on each of the pixel elements, and was preliminarily baked at different temperatures.

[0028]

[Table 1] As is clear from this table, the calcination temperature is set to, for example, 100
When the temperature was set to ° C., it was found that the occurrence rate of display unevenness was low in (A) and (B) and high in (C) and (D). Further, when the unevenness of the alignment film thickness was observed in detail, it was found that, by increasing the spacer column density, the amount of suction of the alignment film for each spacer column was suppressed, and display unevenness was less likely to occur. Further, when the calcination temperature is set to 140 ° C. which is higher than the conventional 100 ° C., the occurrence rate of display unevenness is zero in (A) and (B), and compared to the case of 100 ° C. in (C) and (D). It turned out to be much lower. further,
In the case of (A), (B), (C) and (D), when the calcination is performed at 150 ° C. and 160 ° C., respectively, from the viewpoint of shortening the calcination time, the absorption of the alignment film around the spacer pillars is increased. It was also found that the display was completely suppressed and the occurrence rate of display unevenness became zero. The present embodiment has been made based on this result.

FIG. 1 is a partial plan view of an array substrate showing a configuration of an embodiment of a liquid crystal display device according to the present invention. Here, the signal line 21, the scanning line 22, and the capacitor electrode plate 2 shown in FIG.
8, the auxiliary capacitance line 29 and the light-shielding film 36 are all regarded as light-shielding members, and the periphery of the opening 38 is partially shown as a light-shielding region 39 as indicated by an oblique broken line. Here, the so-called delta, in which the opening 38 adjacent to the scanning line arrangement direction, that is, the vertical direction in the drawing, is shifted by ピ ッ チ pitch in the signal line arrangement direction, that is, the horizontal direction in the drawing. It is arranged. In this embodiment, in the light-shielding region 39, every other pixel in the direction in which the scanning lines are disposed, and every three pixels in the direction in which the signal lines are disposed, that is, every other pixel, are approximately equidistant to the adjacent opening 38. The spacer pillar 40 is provided at the position indicated by the arrow.

By arranging the spacer columns 40 in this manner, the openings 38 corresponding to the odd-numbered scanning lines and the openings 38 corresponding to the even-numbered scanning lines are both aligned around the spacer columns 40. The film is less susceptible to unevenness in film thickness, and furthermore, since it is arranged at a narrower pitch in the direction in which the signal lines are arranged than in the prior art, display unevenness is suppressed.

By the way, since the relative luminous efficiency in the visible light region becomes maximum near the wavelength of 555 nm, among the three picture elements constituting one pixel, the luminous efficiency of blue (B) is red (R), It is smaller than green (G). Therefore, the spacer pillar 4
In the case where it is difficult to completely remove the thickness unevenness of the alignment film around 0, the blue (B) picture is used rather than the spacer pillar adjacent to the red (R) or green (G) picture element region. Adjacent to the elementary region is advantageous. In the embodiment of FIG. 1, the spacer pillars 40 are made to be adjacent to as many blue (B) picture element regions as possible, so that the effect of suppressing display unevenness is enhanced.

Although not shown, the spacer pillar 40
Is provided for each pixel in the arrangement direction of the signal lines,
By providing the actual display area (see FIG. 4) also in a deviated area, the control accuracy of the cell gap can be improved. For this purpose, spacer columns 40 are also provided in the inner and outer regions of the seal for enclosing the liquid crystal. According to the experiments performed by the inventors, good results are obtained when the density of the spacer pillars in the outer region is made lower than that in the inner region of the seal.

As described above, the liquid crystal display device according to the present invention
Mainly, the configuration of the array substrate 6 has been described. The method of manufacturing the liquid crystal display device and the preliminary firing will be described in detail below with reference to FIG.

First, plasma CVD is performed on a glass substrate 20.
The amorphous silicon film is deposited to a thickness of about 500 angstroms by the PECVD method, dehydrogenated, converted to polycrystalline silicon by a laser annealing method, and further patterned into islands, thereby forming a TFT2.
An island-shaped portion for forming the capacitor plate 3 and 24 and a "T" -shaped portion for forming the capacitor electrode plate 28 are formed. Then, about 1000
The island-shaped semiconductor layer is covered with a gate insulating film 33 deposited by angstrom, and a molybdenum-tungsten (MoW) alloy layer is deposited for about 4000 angstroms, and the alloy layer is patterned to form the scanning line 22 and the auxiliary capacitor. A line 29 is formed. A part of the scanning line 22 becomes a gate electrode of the TFTs 23 and 24. in this case,
By implanting impurities by self-alignment using the gate electrode as a mask, a conductor connecting the TFTs 23 and 24 in series and a capacitor electrode plate 28 are formed.

Next, about 5 silicon oxides are
Deposited on the first interlayer insulating film 3
4 is formed. Source and drain contact holes are formed in the gate insulating film 33 and the first interlayer insulating film. Then, molybdenum (M) is formed on the first interlayer insulating film 34 so as to have a thickness of about 6000 Å.
o), a multilayer structure film of aluminum (Al) and molybdenum (Mo) is laminated, and the contact portion 31 and the signal line 21 are formed by patterning this.
Note that the TFTs 23 and 24 are of an n-channel type, and an LD in which an n-type region is provided near the channel region.
D (Light Doped Drain) structure.

Next, a second interlayer insulating film 35 is formed by depositing silicon oxide for about 5000 angstroms, and a low-reflection, metal film corresponding to a portion of the pixel electrode 26 and the contact portion 32 which needs to be shielded from light. The light-shielding film 36 made of is formed. Subsequently, a third interlayer insulating film 37 is formed by laminating an acrylic resin by about 2 μm, whereby the unevenness in the display region and its peripheral region can be flattened. The pixel electrode 26 is formed after providing a contact portion 32 penetrating the second interlayer insulating film 35 and the third interlayer insulating film 37.

The third interlayer insulating film 37 may have a thickness of 1 to 6 μm as long as flattening can be effectively achieved, and an organic material layer other than acrylic resin or an inorganic material such as spion glass (SOG). May be used as a material. Also,
The third interlayer insulating film 37 may be a composite material in which an inorganic material is overlaid on an organic material. In this case, the process can be shortened if the organic material layer is photosensitive, but the organic material layer may not be photosensitive.

As the atmosphere during the above-mentioned preliminary firing, nitrogen blow or the like is usually performed, but it is preferable not to perform forced nitrogen blow from the viewpoint of suppressing unevenness in a large area.

The method for manufacturing the array substrate 6 has been described above. The steps up to forming a liquid crystal display device using the array substrate 6 will be further described. The height of the projections is 3.5 μm on the array substrate 6 using acrylic resin.
Thus, a spacer pillar 40 having a diameter of about 12 μm is formed. Then, after passing through a cleaning step, an alignment film is applied,
Preliminary firing was performed at 220 ° C. without nitrogen blowing, and then main firing was performed at 220 ° C. The array substrate 6 and the opposing substrate 7 face each other with these alignment films facing inward, are further bonded with a sealing material to be applied, and then the sealing agent is thermally cured. The liquid crystal 9 is injected by a well-known vacuum injection method from a liquid crystal injection port provided in a part of the sealing material, and then the injection port is sealed. At this time, the thickness of the counter substrate 7 depends on the pixel size.
What is necessary is just to make it 4 mm.

When the liquid crystal panel 5 is formed as described above, an unillustrated ultraviolet curable adhesive is applied on the counter substrate 7, and the microlens array 4 is overlaid on the counter substrate 7 and pressed. Is done. Thereby, the thickness of the adhesive is made uniform to about 10 to 30 μm.

Thereafter, the microlens array 4 is aligned using a position adjusting mechanism, and then the adhesive is cured by irradiating ultraviolet rays from an ultraviolet irradiator arranged on the microlens side of the microlens array 4. Thereby, it is fixed to the opposite substrate 7.

[0042]

As is clear from the above description, according to the present invention, a liquid crystal display device having high display quality and a method of manufacturing the same can be realized by suppressing display unevenness due to unevenness of an alignment film generated around spacer pillars. Can be provided.

[Brief description of the drawings]

FIG. 1 is a partial plan view of an array substrate constituting a liquid crystal display device according to the present invention.

FIG. 2 is an optical system diagram for explaining the operation principle of a projection type liquid crystal display device using a dichroic mirror and a liquid crystal display device with microlenses.

FIG. 3 is a schematic diagram showing a state in which the microlens shown in FIG. 2 collects each color light into an opening of each color pixel.

4 is a plan view of the liquid crystal display device shown in FIG. 2 as viewed from the light incident side.

5 is a perspective view showing a part of the liquid crystal display device shown in FIG. 2 in a cutaway manner.

FIG. 6 is an equivalent circuit diagram of an array substrate to which the present invention is applied.

FIG. 7 is a plan view showing a detailed configuration of an array substrate corresponding to the equivalent circuit shown in FIG. 6, and a partial cross-sectional view thereof.

FIG. 8 is a partial cross-sectional view of a conventional liquid crystal display device including a spacer column.

[Explanation of symbols]

 6A Array substrate 20 Glass substrate 21 Signal line 22 Scan line 23, 24 Thin film transistor (TFT) 26 Pixel electrode 28 Capacitive electrode plate 29 Auxiliary capacitance line 31, 32 Contact part 33 Gate insulating film 34 First interlayer insulating film 35 Second interlayer Insulating film 36 Light shielding film 37 Third interlayer insulating film 38 Opening 39 Light shielding region 40 Spacer pillar 41, 42 Alignment film

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshikazu Yamada 1-9-2 Hara-cho, Fukaya-shi, Saitama Prefecture Toshiba Fukaya Plant Co., Ltd. (72) Inventor Chihiro Hamamoto 1-Hara-cho, Fukaya-shi, Saitama 9-2 Toshiba Fukaya Plant Co., Ltd. (72) Inventor Hiroaki Furuya 7-1 Nisshin-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa F-term in Toshiba Electronic Engineering Co., Ltd. 2H089 LA07 LA09 QA14 QA15 TA04 TA07 TA09 TA12 UA05 2H091 FA02Y FA29Z FA34Y FD14 FD18 GA06 GA08 GA11 GA13 GA17 LA11 LA12 LA16 MA07 2H092 JA24 JA46 JB64 KA04 KB25 NA04 NA25 NA27 PA02 PA03 PA06 PA08 PA09 RA05

Claims (5)

[Claims] 1. A plurality of scanning lines arranged substantially in parallel on a light-transmitting substrate, and a plurality of signals intersecting these scanning lines via an insulator and arranged substantially in parallel with each other. An array substrate having a pixel electrode provided in a region surrounded by each of the lines and the scanning lines and the signal lines, a central region of the pixel electrode as an opening, and a region excluding the opening as a light shielding region; A counter substrate provided to face the array substrate,
A liquid crystal display device comprising a liquid crystal sealed between the array substrate and the counter substrate with an alignment film interposed therebetween, wherein the liquid crystal display device is disposed in the light-shielding region between the array substrate and the counter substrate, and is adjacent to each other. And a spacer post disposed at every other position in the direction in which the scanning lines are disposed and at least every other pixel in the direction in which the signal lines are disposed, at positions substantially equidistant to the opening. Characteristic liquid crystal display device. 2. The method of claim 1, wherein the openings correspond to red, blue, and green, respectively, and the spacer post is adjacent to the opening for blue more than the other openings. Liquid crystal display. 3. The liquid crystal display device according to claim 1, wherein the spacer pillar is provided in at least one of an inner region and an outer region of the seal for enclosing the liquid crystal. 4. The arrangement according to claim 3, wherein said spacer pillars disposed outside said seal have a higher density than said spacer pillars disposed inside said seal. Liquid crystal display device. 5. A plurality of scanning lines disposed substantially in parallel on a light-transmitting substrate, and a plurality of signals intersecting these scanning lines via an insulator and disposed substantially in parallel with each other. Lines, a step of forming an array substrate having pixel electrodes provided in regions respectively surrounded by the scanning lines and the signal lines, and a step of forming spacer columns for controlling the thickness of a liquid crystal layer on the array substrate. A method of manufacturing a liquid crystal display device, comprising: a step of applying an alignment film on the array substrate; a step of temporarily firing the alignment film; and a step of fully firing the alignment film. A method of manufacturing the liquid crystal display device, wherein the temperature of the liquid crystal display device is set to about 140 ° C. or higher.