JP2002333611A - Liquid crystal display device and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to cure a UV curing sealing material and enhance substrate bonding accuracy in a vacuum when a liquid crystal display panel is formed using a dripping system. SOLUTION: In the constituting which is provided with an array substrate 11a and a counter substrate 1a and wherein the UV curing sealing material 13 is applied on any one substrate of the array substrate 11a and the counter substrate 1a, a desired quantity of a liquid crystal 14 is dripped into the part enclosed by the UV curing sealing material 13 and both substrates 1a and 11a are bonded together in a vacuum, a colored film 6 is formed between a pixel electrode 8 and a switching active element 3 and an electrically conducting means 7 for conducting the pixel electrode 8 to the switching active element 3 is formed at the colored film 6. Alignment operation is not needed and the stage can be simplified by adopting such a color filter-on-array structure. The UV curing sealing material 13 can be irradiated with UV from the counter substrate 1a without using a light shielding film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a color liquid crystal display device, in which switching elements for driving pixel electrodes are formed on an array substrate. And a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventional thin film transistors (Thin F)
ilm Transistor (hereinafter referred to as “TFT”) type liquid crystal display device (hereinafter referred to as “liquid crystal panel”)
7 is shown in FIG. This TFT type liquid crystal panel 3
1e is an array substrate 11e and a color filter substrate 1e.
And The color filter substrate 1e includes a light shielding film 4 and color filters 6R, 6R on a glass substrate 2a.
G, 6B and the transparent electrode 10 are formed. On the other hand, the array substrate 11e has active elements 3a and 3b on which a signal line and a scanning line are both formed on a glass substrate 2b, and a transparent electrode 8. These color filter substrates 1e
The alignment film 9 is provided on the opposite surface of the substrate and the array substrate 11e.
a, 9b are formed. Then, the glass substrate 1e,
A liquid crystal panel 31e is formed by fixing the periphery of 11e with a sealing material 13 and filling the liquid crystal 14 with a spherical spacer 15 interposed therebetween. The liquid crystal panel 31e
A polarizing plate is attached to the front and back surfaces of the panel according to the purpose of the above.

As shown in FIG. 7, a method of injecting liquid crystal into a liquid crystal cell in a method of manufacturing a liquid crystal display element includes an injection method and a dropping method. The former injection method is generally used. The liquid crystal is filled from the opening of an empty cell by capillary action and pressure difference in a vacuum. That is, as shown in FIG.
The liquid crystal 14 is placed in the vat 52 in advance, and a liquid crystal cell 31d in which a substrate is bonded with the sealing material 13 is arranged thereon. The atmosphere 53 in the vacuum chamber 51d is exhausted by the vacuum pump 54.
At this time, the inside of the liquid crystal cell 31d is also in a vacuum state. Next, the liquid crystal cell 31d is lowered, the injection port 55 is immersed in the liquid crystal, and then the vacuum chamber 51d is opened to the atmosphere. The liquid crystal 14 is injected into the liquid crystal cell 31d.

On the other hand, the latter dripping method is a method in which liquid crystal is dropped on a substrate in advance and two substrates are bonded in a vacuum. That is, as shown in FIG.
First, a sealing material 13u is formed on the periphery of the panel of either the array or the color filter substrate 11b, and a desired amount of liquid crystal 14 is dropped, and then vacuum chucked on the plate 56b. On the other hand, the substrate 1b on the opposite side is
Vacuum chuck a. Next, the air in the vacuum chamber 51c is exhausted by the vacuum pump 54. Since the vacuum degree of the substrate chuck is higher than the vacuum degree in the vacuum chamber 51c,
The substrate 1b does not fall and is fixed to the upper plate 56a.
Then, after aligning the upper and lower substrates, the upper plate 56a
And the upper and lower substrates are bonded together.

In recent years, the size of liquid crystal panels mainly for monitors and TVs has been increasing. However, in order to form large liquid crystal panels as compared with small liquid crystal panels, the former injection method requires:
The liquid crystal injection time after evacuation and evacuation becomes very long, and the throughput is deteriorated. It may take more than ten hours depending on the size of the liquid crystal panel.

On the other hand, in the latter dripping method, a required amount of liquid crystal is dropped on a substrate, bonded in a vacuum, and fixed by irradiating ultraviolet rays to a photosensitive curable sealing material formed around the liquid crystal panel. In this way, a liquid crystal panel can be formed, so that the throughput is very good.

As described above, since the dropping method is superior to the injection method from the viewpoint of productivity, the dropping method has been actively developed.

[0008]

However, when the dropping method is used, the following two problems occur. That is, there are two problems of (1) a method of irradiating an ultraviolet-curable sealing material with ultraviolet light during panel formation, and (2) a precision of bonding a substrate in a vacuum.

First, the first problem is the problem of irradiating the ultraviolet-curable sealing material with ultraviolet rays at the time of forming the panel. In recent years, it has been required to narrow the frame around the display area outside the display area of the liquid crystal panel. In order to realize this, as shown in FIG. 9, a seal 13 is formed on the light shielding film 4 at the frame of the color filter.
u is required to be formed (in the conventional wide frame design, a seal 13u is formed outside the color filter frame light shielding film 4).
On the other hand, in the dropping method, it is essential to use the photosensitive curable seal 13u. Therefore, when forming the panel, the ultraviolet curable seal 13u is used.
Cannot be cured.

That is, when ultraviolet rays are irradiated from the color filter substrate 1e side, the peripheral light-shielding film 4
Block UV light. On the other hand, the array substrate 1 on the opposite side
Even when ultraviolet rays are irradiated from the 1e side, the array wiring 3 which is a metal film blocks the ultraviolet rays, so that the ultraviolet curing type sealing material 13u cannot be cured. Also, when irradiating ultraviolet rays simultaneously from both sides,
The color filter substrate 1e side has a light-shielding film 4 in the peripheral portion, and the array substrate 11e on the opposite side has a portion that shields ultraviolet rays together with the array wiring 3, and cures the ultraviolet curable seal 13u all around. Can not do.

The second problem is the accuracy of bonding substrates in a vacuum at the time of forming a panel.

Generally, in a TFT liquid crystal panel, a problem of alignment accuracy occurs in a process of combining an array substrate and a color filter substrate. Therefore, in the pattern design stage, this alignment error is expected,
The pattern width of the light-shielding film formed on the color filter is widened so that a display defect does not occur due to misalignment. For this reason, the pattern width of the light-shielding film is designed to be wide, so that the pixel aperture ratio becomes small, and the display quality of the liquid crystal panel becomes dark.

Further, in recent years, in order to improve the display quality of a liquid crystal panel, the definition of a pixel has been reduced to a higher definition. On the other hand, simply reducing the pixel size by designing the line width of the light-shielding film on the color filter substrate on the opposite side designed to hide this array wiring in the conventional array design reduces the aperture ratio of the liquid crystal panel. At present, it is even darker.

Therefore, in recent years, a technique for increasing the aperture of pixels has been developed in order to realize a higher brightness of a liquid crystal panel, and one of such techniques is a high-precision alignment technique in panel manufacturing equipment. Unexpectedly, it is difficult to further increase the aperture.

[0015] As described above, even in a bonding apparatus at atmospheric pressure, improvement in alignment accuracy cannot be expected, and in the case of a dropping method in which substrates are bonded in a vacuum, the substrate is supported and bonded in a vacuum. In terms of the method described above, there is currently a greater problem than the conventional method of bonding under atmospheric pressure.

Accordingly, an object of the present invention is to provide a liquid crystal display device which can cure a UV-curable sealing material when a liquid crystal panel is formed by using a dropping method and can improve the accuracy of bonding substrates in a vacuum. It is an object of the present invention to provide a manufacturing method thereof.

[0017]

According to a first aspect of the present invention, there is provided a liquid crystal display device comprising: a substrate used in a dropping method; a color filter formed on an array substrate; Is a color filter-on-array structure that eliminates the need.

That is, an array substrate on which a pixel electrode and a switching active element for driving the pixel electrode are formed, and a counter substrate on which a counter electrode of the pixel electrode is formed, wherein one of the array substrate and the counter substrate is provided. A liquid crystal display device in which an ultraviolet-curable sealing material is applied on the substrate, a desired amount of liquid crystal is dropped on a portion surrounded by the ultraviolet-curing sealing material, and the two substrates are bonded together in a vacuum. A coloring film is formed between the pixel electrode and the switching active element, and an electrical conduction unit for conducting the pixel electrode and the switching active element is formed on the coloring film.

Further, the colored film and the black matrix are arranged so as not to be located on the counter substrate corresponding to the ultraviolet-curable sealing material.

As described above, the color filter on array structure in which the colored film is formed between the pixel electrode and the switching active element, and the conductive film for electrically connecting the pixel electrode and the switching active element is formed in the colored film. This eliminates the need for alignment between the array substrate on which the colored film is formed and the counter substrate on which the counter electrode is formed over the entire surface, eliminating misalignment defects when assembling the substrate and eliminating the need for alignment work. , The process can be simplified. Also, since there is no problem of alignment accuracy when combining both substrates, it is possible to design a pattern that does not require this alignment error, and achieve the ultimate ultra-high aperture by further narrowing the pattern width of the light shielding film. it can.

In the case where only the ITO is formed on the counter substrate on the side opposite to the color filter on-array substrate and the case where the frame black matrix around the panel is also formed, the ultraviolet curable type is formed from the counter substrate. The sealing material can be irradiated with ultraviolet rays without a light-shielding film, and the sealing material can be surely cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to a second aspect of the present invention, there is provided a liquid crystal display device comprising: an array substrate on which a pixel electrode and a switching active element for driving the pixel electrode are formed; and a counter substrate on which a counter electrode of the pixel electrode is formed on a color filter. A UV-curable sealing material is applied on one of the array substrate and the counter substrate, and a desired amount of liquid crystal is dropped on a portion surrounded by the UV-curable sealing material. Wherein the color filter and the black matrix are arranged so as not to be located on the counter substrate corresponding to the ultraviolet-curable sealing material.

As described above, since the color filter and the black matrix are arranged so as not to be located on the counter substrate corresponding to the ultraviolet-curable sealing material, the ultraviolet ray is irradiated from the counter substrate to the ultraviolet-curing sealing material without a light shielding film. And the sealing material can be surely cured.
Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to a third aspect of the present invention, there is provided a method of manufacturing a liquid crystal display device, wherein the colored film formed between the pixel electrode and the switching active element on the array substrate is provided with an electric conduction means for conducting the pixel electrode and the switching active element. Forming, a step of forming a counter electrode of the pixel electrode on a counter substrate, and applying a UV-curable seal material on one of the array substrate and the counter substrate, A step of dropping a desired amount of liquid crystal onto a portion surrounded by a circle and bonding the two substrates in a vacuum, and a step of irradiating the ultraviolet-curable sealing material from the counter substrate side and curing the same.

As described above, the colored film formed between the pixel electrode and the switching active element on the array substrate is provided with the electrical conduction means for conducting the pixel electrode and the switching active element. This eliminates the need for alignment work, thereby simplifying the process, and achieving the ultimate ultra-high aperture with the pattern width of the light-shielding film further reduced.

Also, since the ultraviolet-curable sealing material is irradiated and cured from the side of the counter substrate on which only the counter electrode of the pixel electrode is formed, the ultraviolet-curable sealing material can be irradiated with ultraviolet light without a light-shielding film. The material can be reliably cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a liquid crystal display device, comprising: forming a pixel electrode and a switching active element on an array substrate; and forming a counter electrode of the pixel electrode on a color filter of the counter substrate. A UV-curable sealing material is applied on one of the array substrate and the counter substrate, and a desired amount of liquid crystal is dropped on a portion surrounded by the UV-curable sealing material. Bonding the color filter and the black matrix so as not to be at a position on the counter substrate corresponding to the ultraviolet-curable seal material, and irradiating the ultraviolet-curable seal material from the counter substrate side. And harden.

As described above, the color filter and the black matrix are arranged so as not to be located on the counter substrate corresponding to the ultraviolet-curable seal material, and the ultraviolet-curable seal material is irradiated from the counter substrate side and cured. As in the item 2, the ultraviolet-curable sealing material can be irradiated with ultraviolet rays without a light-shielding film, and the sealing material can be surely cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view of a liquid crystal display device using a color filter on array substrate according to a first embodiment of the present invention.

As shown in FIG. 1, the liquid crystal display element 31
a includes an array substrate 11a on which a pixel electrode 8 and a switching active element 3 for driving the pixel electrode 8 are formed, and a counter substrate 1a on which a counter electrode 10 of the pixel electrode 8 is formed;
An ultraviolet-curable sealing material 13u is applied on one of the array substrate 11a and the counter substrate 1a, and a desired amount of the liquid crystal 1 is applied to a portion surrounded by the ultraviolet-curing sealing material 13u.
4 is dropped, and both substrates 1a and 11a are bonded together in a vacuum. Further, a coloring film 6 is formed between the pixel electrode 8 and the switching active element 3, and an electrical conduction means (contact hole) 7 for conducting the pixel electrode 8 and the switching active element 3 is formed in the coloring film 6. ing.

FIGS. 2 and 3 are cross-sectional views showing a process of forming an array substrate on which a color filter is formed in the first embodiment of the present invention.

Array substrate 1 on which color filters are formed
When forming 1a, first, as shown in FIG. 2A, a switching active element 3 is placed on a glass substrate 2b.
It is formed by repeating a general semiconductor thin film formation, an insulation film formation, and etching by a photolithography method.
Further, as shown in FIG. 3B, a black resist in which an organic pigment is dispersed is formed on the glass substrate 2b on which the active elements 3 are formed, and the light-shielding film 4 is formed in a required pattern shape by a photolithography method. As an exposure machine used for this photolithography, a proximity exposure apparatus is used from the viewpoint of productivity.
It is suitable. However, in order to improve the patterning accuracy, a mirror projection exposure apparatus may be used. The black resist preferably has an electrical resistivity of 10 ¹² Ω · cm or more, a dielectric constant of 4 or less, and an OD value of 3 or more as the material properties after the film formation. Next, as shown in FIG. 4C, a photosensitive colored resin 6 in which a pigment is dispersed is formed on the glass substrate 2b on which the light-shielding film 4 is formed, and as shown in FIG. The photosensitive colored resin 6 can be formed in a required pattern shape as shown in FIG. 3E by exposing from the surface with ultraviolet rays 17 using a mask and then developing. Further, by repeating this, RGB is formed. In this case, RGB was formed after the formation of the light shielding film 4, but the order of forming the light shielding film 4 and the RGB may be any order. Further, a contact hole 7a is formed.

Thereafter, as shown in FIG.
The flattening film 5 is formed on the RGB colored layers 6R, 6G, 6B as shown in FIG. As the flattening film 5, an acrylic photosensitive type resin is preferable. In this case, the contact holes 7 are formed in the planarization film 5 formed in the contact hole portions 7a by the photolithography method as described above. Finally, as shown in FIG. 2G, a transparent electrode is formed on the entire surface by ITO sputtering, and then the pixel electrode 8 is patterned by the photolithography method, thereby electrically connecting the active element 3 through the contact hole 7. Can be formed. Thereby, the color filter on array substrate 11a is formed.

When manufacturing a TFT type liquid crystal panel using the color filter on array substrate 11a manufactured as described above, as shown in FIG. 1, the color filter on array substrate 11a and the glass substrate 2a are used. The alignment films 9a and 9b are formed on the surface opposite to the counter substrate 1a on which the transparent electrode 10 is formed.

Thereafter, a liquid crystal panel is formed by a dropping method. In the liquid crystal panel process, after forming the alignment film 9b on the display area portion on the color filter on array substrate 11b,
Rubbing treatment and dispersion of spherical spacers 15 are performed.

On the other hand, the counter substrate 1 on which the counter electrode 10 is formed
After forming the alignment film 9a also on the display area b, a rubbing process is performed, and then a photosensitive sealing material 13u is formed around the display area by a screen printing method or a drawing method. Further, a desired amount of liquid crystal 14 is dropped on a portion surrounded by the photosensitive sealing material 13u.

After that, similarly to the dropping method shown in FIG. 8B, the photosensitive sealing material 13u and the liquid crystal 1
4 is fixed, and the upper plate 56 is fixed.
After the color filter on-array substrate 11a is fixed to a, the atmosphere in the vacuum chamber 51c is evacuated by the vacuum pump 54, and the positions of the substrates 1a, 11a are aligned in a vacuum state. , 11a. Finally, the photosensitive sealing material 13u is cured by irradiating ultraviolet rays from the counter substrate 1a side, and the substrates 1a and 11a are fixed. That is, since a film that blocks ultraviolet light is not formed in the portion where the ultraviolet-curable seal material 13u is formed, the seal material 13u is cured by ultraviolet light.

Also, in this embodiment, the case where only the ITO is formed on the opposing substrate 1a has been described. However, even when the frame black matrix around the panel is formed on the opposing substrate, the ultraviolet curable sealing material 13u is formed. By designing the frame black matrix not to be formed in the portion, the sealing material 13u is cured by ultraviolet rays.

The color filter on array substrate 11
Alternatively, the photosensitive sealing material 13u and the liquid crystal 14 may be dropped and fixed to the plate 56b, and the counter substrate 1b may be fixed to the upper plate 56a. The liquid crystal is uniformly diffused into the panel when the two substrates are bonded.

As described above, the liquid crystal panel formed by the conventional vacuum injection method has an injection port for injecting liquid crystal, whereas the liquid crystal panel formed by the dropping method of this embodiment has a sealing portion. The feature is that there is no inlet.

FIGS. 4 to 6 show a second embodiment of the present invention.
It will be described based on. FIG. 4 is a plan view of a liquid crystal display device using a color filter substrate according to a second embodiment of the present invention.

As shown in FIG. 4, the liquid crystal display element 31b
Comprises an array substrate 11c on which a pixel electrode and a switching active element 3 for driving the pixel electrode are formed, and a counter substrate 1c on which a counter electrode of the pixel electrode is formed on the color filter 6, and includes an array substrate 11c and a counter substrate 1c. An ultraviolet-curable sealing material 13u is applied on one of the substrates, a desired amount of liquid crystal is dropped on a portion surrounded by the ultraviolet-curing sealing material 13u, and the substrates 1c and 11c are bonded together in a vacuum. Configuration. Further, an ultraviolet-curable sealing material 13u
The color filter 6 and the black matrix are arranged so as not to be located on the opposing substrate 1c corresponding to. In this case, the light shielding film 4 in the frame portion is formed on the array substrate 11c.

FIGS. 5 and 6 are plan views showing the steps of forming an array substrate and a color filter substrate of a liquid crystal display device according to a second embodiment of the present invention. The formation of the array substrate 11c on which the light shielding film 4 is formed is performed as shown in FIGS.

That is, as shown in FIG. 1A, an array wiring and a switching active element 3 are formed on a glass substrate 2b. Further, as shown in FIG. 3B, a black resist in which an organic pigment is dispersed is formed on the glass substrate 2b on which the array wiring and the active elements 3 are formed, and the light-shielding film 4 is formed in a required pattern by a photolithography method. .

On the other hand, as shown in FIG. 4B, the color filter substrate 1c is formed by first forming a pigment-dispersed photosensitive colored resin 6 on a glass substrate 2a and using a mask from the surface of the glass substrate 2a. The colored film 6R can be formed in a required pattern by exposing and developing with the ultraviolet rays 17.
Further, by repeating this, RGB is formed.

Next, a black resist in which an organic pigment is dispersed is formed as the light-shielding film 4, and the back surface is exposed to form the light-shielding film 4 between the RGB using the previously formed RGB film as a mask. At this time, a design is adopted in which the light-shielding film 4 is not formed in the portion where the ultraviolet-curable sealing material 13u is formed.
Further, the color filter substrate 1c is formed by forming a transparent electrode on the entire surface by ITO sputtering.

As shown in FIG. 6C, a liquid crystal panel is formed by a dropping method. That is, after aligning the opposite substrate 1c and the array substrate 11c to form an alignment film and performing a rubbing process, forming a spacer on one of the substrates, forming a photosensitive sealing material 13u on one of the substrates, and then forming a desired amount of liquid crystal. The two substrates 1c and 11c are stuck together in a vacuum in the same manner as in the dropping method shown in FIG. 8B, and the opposing substrate (on which a color filter is formed) 1 is formed on the photosensitive sealing material 13u.
By irradiating ultraviolet rays from the c side, the sealing material 13u
To fix the two substrates 1c and 11c.

Finally, as shown in FIG. 4D, a desired liquid crystal panel can be obtained by cutting along the broken line 19.

However, in some cases, the light-shielding film 4 formed on the array substrate 11c shown in FIG. 5B may not be formed. Further, the light-shielding film 4 of the color filter substrate 1c shown in FIG.

As described above, with respect to the counter substrate 1a and the color filter substrate 1c formed in the first and second embodiments, the light-shielding film 4 is formed at the portion where the ultraviolet-curable sealing material 13u is formed. Therefore, the ultraviolet curable seal 13u could be cured by irradiating ultraviolet rays from these substrate sides.

Further, when irradiating ultraviolet rays from the opposite substrate side of the liquid crystal panel, direct irradiation of the liquid crystal with ultraviolet rays causes deterioration of display characteristics. Therefore, a mask is arranged at a portion where the liquid crystal is sealed, and light is shielded from light. Is also good.

[0052]

According to the liquid crystal display device of the first aspect of the present invention, a colored film is formed between the pixel electrode and the switching active element, and the colored film is used to conduct the pixel electrode and the switching active element. By forming the electrical conduction means, a color filter is formed on the array substrate used for the dropping method, thereby forming a color filter on array structure. Alignment with the formed opposing substrate is not required, so that there is no displacement error when assembling the substrate, and no alignment work is required, thereby simplifying the process. Also, since there is no problem of alignment accuracy when combining both substrates, it is possible to design a pattern that does not require this alignment error, and achieve the ultimate ultra-high aperture by further narrowing the pattern width of the light shielding film. it can.

In the case where only the ITO is formed on the counter substrate on the side opposite to the color filter on-array substrate and the case where the frame black matrix around the panel is formed together, the counter substrate is cured by ultraviolet rays. The mold sealing material can be irradiated with ultraviolet light without a light-shielding film, and the sealing material can be surely cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to the liquid crystal display device of the second aspect of the present invention, the color filter and the black matrix are arranged so as not to be located on the opposite substrate corresponding to the ultraviolet-curable sealing material. The mold sealing material can be irradiated with ultraviolet light without a light-shielding film, and the sealing material can be surely cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to the method of manufacturing a liquid crystal display device according to the third aspect of the present invention, the electrical connection between the pixel electrode of the array substrate and the colored active film formed between the switching active element for electrically connecting the pixel electrode and the switching active element. Since the conductive means is formed, the alignment work is not required as in the first aspect, the process can be simplified, and the ultimate ultra-high aperture with the pattern width of the light shielding film further reduced can be realized.

Further, since the ultraviolet-curable sealing material is irradiated and cured from the side of the counter substrate on which only the counter electrode of the pixel electrode is formed, the ultraviolet-curable sealing material can be irradiated with ultraviolet rays without a light-shielding film. The material can be reliably cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

According to the method of manufacturing a liquid crystal display device according to the fourth aspect of the present invention, the color filter and the black matrix are arranged so as not to be located on the opposite substrate corresponding to the ultraviolet-curable sealing material. Since the sealing material is irradiated and cured from the counter substrate side, the ultraviolet-curable sealing material can be irradiated with ultraviolet rays without a light-shielding film in the same manner as in claim 2, and the sealing material can be surely cured. Therefore, not only high definition can be realized, but also a liquid crystal panel manufacturing process with high throughput can be constructed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a liquid crystal display device using a color filter on array substrate according to a first embodiment of the present invention;

FIG. 2 is a sectional view of each step showing a manufacturing process of the color filter on array substrate according to the first embodiment of the present invention;

FIG. 3 is a sectional view of each step showing a manufacturing process after FIG. 2;

FIG. 4 is a plan view of a liquid crystal display device using a color filter substrate according to a second embodiment of the present invention.

FIG. 5 is a plan view of each step showing a manufacturing process of an array substrate and a color filter substrate of a liquid crystal display device according to a second embodiment of the present invention.

6 is a plan view of each step showing a manufacturing process after FIG. 5;

FIG. 7 is a sectional view of a liquid crystal display device showing a conventional example.

FIG. 8 is a configuration diagram showing a method for filling a panel with liquid crystal of an injection type and a dropping type.

FIG. 9 is a plan view showing a position of a sealing material in a panel process of a conventional liquid crystal display device.

[Explanation of symbols]

 Reference Signs List 1a Counter substrate 3 Switching active element 4 Shielding film 5 Flattening film 6 Coloring film 7 Contact hole 8 Pixel electrode 9a, 9b Alignment film 10 Counter electrode 11a Color filter on array substrate 13u UV curable sealing material 14 Liquid crystal 15 Spacer 16 Photo mask 31 liquid crystal display element 51 vacuum chamber 52 liquid crystal bat 53 atmosphere 54 vacuum pump 55 inlet 56 plate

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hideo Koseki 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 2H048 BA11 BA45 BA47 BB02 BB44 2H089 LA07 LA41 NA25 QA12 TA01 TA09 TA12 TA13 2H091 FA35Y FB04 GA01 GA08 GA13 LA12 2H092 GA29 JA24 JA46 MA13 MA17 NA27 PA01 PA03 PA08 PA09

Claims (4)

[Claims] 1. An array substrate on which a pixel electrode and a switching active element for driving the pixel electrode are formed, and a counter substrate on which a counter electrode of the pixel electrode is formed, wherein one of the array substrate and the counter substrate is provided. A liquid crystal display device in which an ultraviolet-curable sealing material is applied on the substrate, a desired amount of liquid crystal is dropped on a portion surrounded by the ultraviolet-curing sealing material, and the two substrates are bonded together in a vacuum. A coloring film is formed between the pixel electrode and the switching active element, and an electrical conduction means for conducting the pixel electrode and the switching active element is formed on the coloring film. A liquid crystal display device, wherein the colored film and the black matrix are arranged so as not to be located on a counter substrate. 2. An array substrate on which pixel electrodes and switching active elements for driving the pixel electrodes are formed, and a counter substrate on which a counter electrode of the pixel electrodes are formed on a color filter, wherein the array substrate and the counter substrate are provided. A liquid crystal display device in which an ultraviolet-curable sealing material is applied on one of the substrates, a desired amount of liquid crystal is dropped on a portion surrounded by the ultraviolet-curing sealing material, and the two substrates are bonded together in a vacuum. Wherein the color filter and the black matrix are arranged so as not to be located on the counter substrate corresponding to the ultraviolet-curable sealing material. 3. A step of forming, on a colored film formed between a pixel electrode and a switching active element of the array substrate, an electric conduction means for conducting the pixel electrode and the switching active element, and a counter electrode of the pixel electrode. Forming an opposite substrate, and applying an ultraviolet-curable sealing material on one of the array substrate and the counter substrate, and applying a desired amount of liquid crystal to a portion surrounded by the ultraviolet-curing sealing material. A method for manufacturing a liquid crystal display device, comprising: a step of dropping and bonding the two substrates in a vacuum; and a step of irradiating and curing the ultraviolet-curable sealing material from the counter substrate side. 4. A step of forming a pixel electrode and a switching active element on an array substrate, a step of forming a counter electrode of the pixel electrode on a color filter of a counter substrate, and one of the array substrate and the counter substrate. Applying a UV-curable sealing material on the substrate, dropping a desired amount of liquid crystal onto a portion surrounded by the UV-curable sealing material, and bonding the two substrates together in a vacuum. A liquid crystal display device, wherein the color filter and the black matrix are arranged so as not to be located on the counter substrate corresponding to a mold sealing material, and the ultraviolet curing sealing material is irradiated from the counter substrate side and cured. Manufacturing method.