JP2003255326A - Liquid crystal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an electrical short circuit between a light shielding layer and a transparent electrode, to stably supply a liquid crystal display panel with high display quality and further to improve surface flatness of the transparent electrode 106. <P>SOLUTION: In the liquid crystal panel having at least a construction in which color filters with a plurality of colors are disposed adjacent to each other and forming a specified pattern on a first substrate of the liquid crystal panel comprising a liquid crystal sealed in between the first and second substrates and a transparent electrode is disposed on the upper side of the color filters, the liquid crystal panel is characterized by having opposed edges of the color filters adjacent to each other with slopes inclined to directions reverse to each other and the slopes confront with each other only on the slopes and overlap with each other. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a substrate of a liquid crystal panel, and more specifically to a structure of a substrate provided with a light shielding film having conductivity.

[0002]

2. Description of the Related Art A liquid crystal panel typified by a liquid crystal display panel basically comprises two substrates having a plurality of transparent electrodes formed thereon.
The surfaces on which the transparent electrodes are formed are made to face each other, sealed with a sealing material, and a liquid crystal material is injected into this.

The prior art will be described below with reference to the drawings.
FIG. 9 is a sectional view showing the structure of a conventional color liquid crystal display panel.

As shown in FIG. 9, a color filter 104 is provided on the first substrate 101, a protective film 105 is provided on the color filter 104, and a protective film 105 is provided.
A transparent electrode 106 is provided on the top. A transparent electrode 206 is provided on the second substrate 201 which faces the first substrate 101 with the liquid crystal 300 interposed therebetween. Here, an alignment film is actually provided on the transparent electrodes 106 and 206, but the illustration is omitted.

In the case of the structure shown in FIG. 9, the protective film 105
Is used to absorb irregularities on the layer surface of the color filter 104 and flatten the surface of the transparent electrode 106. That is, if there is a nonuniform portion in the interval between the transparent electrode 106 and the transparent electrode 206 that face each other, in this portion and in the vicinity thereof, nonuniform display brightness, nonuniform liquid crystal alignment, etc. occur, and display quality deteriorates. Cause Therefore, the protective film 105 is provided to finish the transparent electrode surface of the substrate flat.

However, in the case of a liquid crystal display panel of relatively low division driving, acceptable flatness can be obtained even without a protective film, and thus the formation of this protective film may be omitted.

The transparent electrodes 106 and the transparent electrodes 206 are arranged in a matrix with each other, and opposing portions thereof are pixel portions involved in display, and other portions are non-pixel portions not involved in display. It is desirable that the non-pixel portion has a light transmittance of zero in order not to reduce the contrast of the entire display.

However, in reality, light leaks for various reasons, so that the display quality is remarkably reduced. Therefore, attempts have been made to prevent light leakage from the non-pixel portion.

FIG. 10 is a cross-sectional view showing a first substrate 101 in a conventional example in which light leakage in a non-pixel portion is prevented. Adjacent color filters 104 are overlapped with each other.
It is intended to obtain a light shielding effect.

The configuration shown in FIG. 10 has some drawbacks. First, in order to enhance the light blocking effect, it is necessary that the adjacent color filters 104 completely overlap each other, and this overlapping portion becomes convex.

Since this convex portion has a relatively large distance,
The surface steps are not absorbed even by the protective film 105, and the flatness of the transparent electrode 106 is impaired.

Further, even in the portion where the color filter 104 completely overlaps, some light leakage occurs, and it cannot be said to be a perfect light shielding method.

Further, in this method, the color filter 10
The light blocking effect can be obtained only on the non-pixel portion parallel to 4, and the non-pixel portion orthogonal to the color filter 104 cannot be shielded.

FIG. 11 shows a first substrate 1 in another conventional example.
It is sectional drawing which shows 01.

As shown in FIG. 11, a light shielding film 102 is provided on the first substrate 101, a color filter 104 is provided on the light shielding film 102, a protective film 105 is provided on the color filter 104, and protection is performed. A transparent electrode 106 is provided on the film 105.

According to the structure shown in FIG. 11, the light shielding film 102 can be provided independently of the color filter 104. As a result, by forming the shape of the light-shielding film 102 in a cross pattern, a light-shielding effect can be obtained even in a non-pixel portion parallel to the color filter 104, and also in a non-pixel portion orthogonal to the color filter 104. A light shielding effect can be obtained.

As a method of forming the light-shielding film 102, there is a method of forming a black resin in which a black pigment or a black dye, which is an insulating material, is dispersed by a printing method or a photo-etching method. If the thickness is thin, sufficient light blocking characteristics cannot be obtained.

In order to obtain a sufficient light-shielding property with this black resin, it is necessary to make the resin film thickness sufficiently thick. However, when the film thickness is increased in this way, a large surface step is generated between the light-shielding film portion and the portion without the light-shielding film which becomes an effective pixel, and it is difficult to flatten the step with the protective film 105. is there.

As described above, such a liquid crystal display panel having a substrate structure with insufficient flatness causes non-uniform alignment of liquid crystal, resulting in poor display quality. To solve this problem, a metal thin film is used as the material of the light shielding film 102.

When a metal material is used for the light shielding film 102,
Briefly explaining the manufacturing process of the conventional example shown in FIG.
After forming an opaque metal thin film of chromium or the like on the first substrate 101 by a sputtering method or a vacuum deposition method, a predetermined pattern is formed by a photo etching method to form a light shielding film 102.

On the light shielding film 102, a printing method, a dyeing method,
The color filter 104 is provided by using a pigment dispersion method or the like. Further, a protective film 105 is provided on the color filter 104 by using a transparent resin such as polyimide or acrylic by a printing method or a spin coating method. An indium tin oxide film to be the transparent electrode 106 is formed on the entire surface of the protective film 105 by using a sputtering method, a vacuum evaporation method or the like.
This indium tin oxide film is processed into a predetermined pattern shape by a photoetching method to form a transparent electrode 106.

When the light-shielding film 102 is a metal thin film, the protective film 105 has the flattening function as described above, and the light-shielding film 10
2 also acts as an insulating film between the transparent electrode 106.

[0023]

As described above, the use of a metal thin film for the light-shielding film 102 has sufficient light-shielding characteristics and the reality of forming the light-shielding film 102 capable of ensuring the surface flatness of the transparent electrode 106. Method. In addition, the light shielding film 1
The metal thin film of No. 02 has an advantage that it can be processed into a fine pattern shape by a photoetching method.

However, when a metal thin film is used as the light-shielding film 102, an electrical short-circuit often occurs between the light-shielding film 102 and the transparent electrode 106, which causes a problem that the yield is significantly reduced.

This is because the protective film 105 should be electrically insulated between the light-shielding film 102 and the transparent electrode 106, but in reality, the protective film 105 has many fine pinholes. Therefore, the light shielding film 102 and the transparent electrode 106 are electrically short-circuited via the pinhole. At present, it is very difficult to completely eliminate the pinhole generated in the protective film 105.

The present invention solves such a problem of the related art, and its purpose is to prevent an electrical short circuit between the light-shielding film and the transparent electrode and stably supply a liquid crystal display panel of high display quality. Especially. Further, the object of the present invention is to
This is to improve the surface flatness of the transparent electrode 106.

[0027]

In order to achieve the above object, the present invention provides the above-mentioned encapsulation by sealing two substrates having a plurality of transparent electrodes with the surfaces having the transparent electrodes facing each other with a sealing material. In a liquid crystal panel having a basic structure in which a liquid crystal material is injected, a conductive light shielding film provided on a substrate, an insulating film provided on the light shielding film, a color filter provided on the insulating film, and a color filter provided on the color filter. It is characterized by having a protective film provided and a transparent electrode provided on the protective film.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive light-shielding film provided on the substrate, a color filter provided on the light-shielding film, an insulating film provided on the color filter, a protective film provided on the insulating film, and a transparent electrode provided on the protective film. Liquid crystal panel characterized by

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive light-shielding film provided on the substrate, a color filter provided on the light-shielding film, a protective film provided on the color filter, an insulating film provided on the protective film, and a transparent electrode provided on the insulating film. It is characterized by

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. And a conductive light-shielding film provided on the substrate, an insulating film provided on the light-shielding film, a color filter provided on the insulating film, and a transparent electrode provided on the color filter.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive light-shielding film provided on the substrate, a color filter provided on the light-shielding film, an insulating film provided on the color filter, and a transparent electrode provided on the insulating film.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. And a conductive light-shielding film provided on the substrate, an insulating film provided on the light-shielding film, a protective film provided on the insulating film, and a transparent electrode provided on the protective film.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive light-shielding film provided on the substrate, a protective film provided on the light-shielding film, an insulating film provided on the protective film, and a transparent electrode provided on the insulating film.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive light-shielding film provided on the substrate, a color filter provided on the light-shielding film, a protective film provided on the color filter, and a transparent electrode provided on the protective film.

The insulating film is characterized by being made of one or more materials selected from silicon oxide, silicon nitride, silicon carbide, titanium oxide, and zirconium oxide.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive film provided on a substrate and a transparent electrode are provided above the film, and at least an insulating film is provided between the film and the transparent electrode.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive film provided on a substrate and a transparent electrode are provided above the film, and at least a color filter and an insulating film are provided between the film and the transparent electrode.

In addition, in a liquid crystal panel having a basic structure in which two substrates having a plurality of transparent electrodes are made to face each other with the surfaces having the transparent electrodes facing each other and sealed with a sealing material, and a liquid crystal material is injected into the sealing. A conductive film provided on a substrate and a transparent electrode are provided above the film, and a protective film, a color filter, and an insulating film are provided between the film and the transparent electrode.

Further, the color filter has a plurality of colors, and a color of the color filter and an adjacent color overlap each other, and the film is disposed below the overlap. Is characterized by.

Further, in a liquid crystal panel in which liquid crystal is sealed between the first and second substrates, a conductive light shielding film provided on the first substrate and an insulating film provided on the light shielding film. A color filter provided on the insulating film and a transparent electrode provided on the color filter are provided. The color filters and the insulating film are provided between the light shielding film and the transparent electrode by overlapping the adjacent color filters with each other. It is characterized in that an insulating structure is constituted by a multilayer film. Also, the overlap of the color filters is small. Furthermore, in a liquid crystal panel in which liquid crystal is sealed between a first and a second substrate, a conductive light-shielding film provided on the first substrate, a color filter provided on the light-shielding film, and this color filter A multilayer film including an insulating film provided on the insulating film and a transparent electrode provided on the insulating film, the adjacent color filters overlapping each other, and the color filter and the insulating film being interposed between the light shielding film and the transparent electrode. It is characterized in that an insulating structure is constituted by. Further, the overlap of the color filters is small. In order to solve the above problems, the present invention uses the above means for solving. Further, the present invention uses the following solving means in order to solve the above problems. In order to solve the above-mentioned problems, the present invention provides a color filter of a plurality of colors with a predetermined pattern on the first substrate of a liquid crystal panel in which a liquid crystal is sealed between a first substrate and a second substrate. In a liquid crystal panel that is arranged adjacent to each other and has at least a configuration in which a transparent electrode is provided above the color filters, the opposite sides of the adjacent color filters form slopes that are inclined in opposite directions. It is characterized in that only the slopes hit each other and an overlap is formed. Further, a conductive light-shielding film is provided between the first substrate and the color filter, and at least the first substrate, the light-shielding film, the color filter, and the transparent electrode form a multilayer structure. It is characterized in that an overlap of the color filter is formed in the portion. Further, the multi-layer structure on the light-shielding film is characterized in that a color filter and a transparent electrode that overlap the light-shielding film and the insulating film are laminated in this order to form a multi-layer film structure. further,
The multi-layered structure on the light-shielding film has a multi-layered structure in which a color filter overlapping the light-shielding film, an insulating film, and a transparent electrode are stacked in this order.

The liquid crystal display panel constructed by using the above means has an insulating film and a protective film which are newly provided with an electric short circuit between the light shielding film and the transparent electrode due to the fine pinholes of the protective film and the color filter. This can be prevented by forming an insulating layer and a color filter, an insulating film and a protective film and a color filter, or an insulating layer including a multilayer film of a protective film and a color filter. As a result, it is possible to provide a liquid crystal display panel having a high display quality with excellent flatness and a sufficient light-shielding property without lowering the yield.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the invention will be described below with reference to examples.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the drawings show only the structure and not the dimensions or the like. The alignment film on the transparent electrode is not shown.

FIG. 1 shows the first embodiment of the present invention.
3 is a cross-sectional view showing the substrate 101 of FIG.

As shown in FIG. 1, a chromium thin film is first formed on the entire surface of the first substrate 101 by a sputtering method or a vacuum evaporation method, and the chromium thin film is formed into a predetermined pattern by a photoetching method. The light shielding film 102 is provided.

Further, silicon oxide, which is a hard and transparent insulator, is formed on the light-shielding film 102 by a sputtering method,
The insulating film 103 is formed. After that, the insulating film 103
The color filter 104 is directly formed on the upper surface by a dyeing method.

After that, a transparent acrylic resin is applied on the entire surface of the color filter 104 by spin coating to form a protective film 105. Further, an indium tin oxide thin film is formed on the entire surface of the protective film 105 by a sputtering method, and then a predetermined pattern is formed by a photoetching method to provide a transparent electrode 106.

That is, the first embodiment shown in FIG.
Conductive light shielding film 102 provided on the substrate 101 of
And an insulating film 103 provided on the light shielding film 102, and an insulating film 1.
03 provided on the color filter 104, a protective film 105 provided on the color filter 104, and a protective film 105.
The structure includes the transparent electrode 106 provided on the upper side.

According to the present invention employing the structure shown in FIG. 1, even if the metal thin film having the conductivity but the sufficient light shielding property is used as the light shielding film 102, the insulating film 103 and the protective film 10 are formed.
5 is provided as a multilayer film between the light shielding film 102 and the transparent electrode 106. Therefore, even if the insulating film 103
Even if there is a pinhole, the multilayer film structure with the protective film 105 can surely prevent an electrical short circuit between the light shielding film 102 and the transparent electrode 106.

FIG. 2 shows the first embodiment of the second embodiment of the present invention.
FIG. 3 is a cross-sectional view showing the substrate 101 of FIG. 3A, showing a structure in which an insulating film 103 is provided on a color filter 104.

As shown in FIG. 2, a conductive light-shielding film 102 provided on the first substrate 101, a color filter 104 provided on the light-shielding film 102, and an insulating film 103 provided on the color filter 104. The structure has a protective film 105 provided on the insulating film 103 and a transparent electrode 106 provided on the protective film 105.

Also in this second embodiment, the first embodiment shown in FIG.
Similar to the embodiment described above, since a multilayer film including the insulating film 103 and the protective film 105 is formed between the light shielding film 102 and the transparent electrode 106, an electrical short circuit occurs between the light shielding film 102 and the transparent electrode 106. Can be prevented.

FIG. 3 is a sectional view showing a third embodiment of the present invention, showing a structure in which an insulating film 103 is provided on a protective film 105.

As shown in FIG. 3, a conductive light-shielding film 102 is provided on the first substrate 101, a color filter 104 is provided on the light-shielding film 102, and a protective film 105 is provided on the color filter 104. This structure has an insulating film 103 provided on the protective film 105 and a transparent electrode 106 provided on the insulating film 103.

Also in this third embodiment, the first example shown in FIG.
Similar to the embodiment described above, a multilayer film including the insulating film 103 and the protective film 105 is formed between the light shielding film 102 and the transparent electrode 106. Therefore, the occurrence of an electrical short circuit between the light shielding film 102 and the transparent electrode 106 can be prevented.

FIG. 4 shows the first embodiment of the fourth embodiment of the present invention.
A sectional view of the substrate 101 is shown. The structure of the fourth embodiment is
The protective film 105 shown in FIGS. 1 to 3 is eliminated and the color filter 104 is used as an insulating layer.

As shown in FIG. 4, a conductive light shielding film 102 provided on the first substrate 101, an insulating film 103 provided on the light shielding film 102, a color filter 104 provided on the insulating film 103, and a color. The structure has a transparent electrode 106 provided on the filter 104.

As shown in FIG. 4, the conductive light-shielding film 102 provided on the first substrate 101, the insulating film 103 provided on the light-shielding film 102, and the adjacent color filters provided on the insulating film 103 face each other. The color filter 10 is composed of layers whose sides are inclined in opposite directions to each other and the inclined surfaces abut each other and form an overlap.
4, and the transparent electrode 10 provided on the color filter 104.
6 and 6.

The purpose of providing the protective film 105 is primarily to improve the surface flatness of the transparent electrode 106. However, in the case of relatively low division driving, since the driving margin is wide, it is possible to obtain usable display quality even with insufficient flatness. In such a case, the protective film 105 can be eliminated.

However, as described above, when the light shielding layer 102 made of a metal thin film is provided, the protective film 105 also has a function as a part of the multilayer insulating layer, so that the protective film 105 is simply omitted. Only by doing so, the insulating structure of the multilayer film is lost, and if there is a pinhole in the insulating film 103, an electrical short circuit between the transparent electrode 106 and the light shielding film 102 also occurs.

Therefore, as shown in FIG. 4, the adjacent color filters 104 are overlapped with each other, and the light-shielding film 10 is formed.
An insulating structure is formed by a multilayer film including the color filter 104 and the insulating film 103 between the transparent electrode 106 and the transparent electrode 106.

Further, as shown in FIG. 4, adjacent color filters 104 whose opposite sides form slopes of mutually opposite inclinations overlap each other on the slopes on the light-shielding film, and the light-shielding film 102 and the transparent electrode 106. And a color filter 104 and an insulating film 103 form a multi-layer insulating structure between them.

In this case, since the light-shielding effect is obtained by the light-shielding film 102, it is not necessary to overlap the color filters 104 as in the conventional example shown in FIG. If the overlap is small, a gap may be partially generated due to process variations, but even in that case, the probability of occurrence of an electrical short-circuit accident is significantly reduced.

FIG. 5 shows the first embodiment of the fifth embodiment of the present invention.
3 is a cross-sectional view showing the substrate 101 of FIG. 1, showing the structure in which the protective film 105 is omitted and the insulating film 103 is provided on the color filter 104.

As shown in FIG. 5, a conductive light-shielding film 102 is provided on the first substrate 101, a color filter 104 is provided on the light-shielding film 102, and an insulating film 103 is provided on the color filter 104. The structure has a transparent electrode 106 provided on the insulating film 103.

Further, as shown in FIG. 5, the first substrate 1
01 and the light-shielding film 102 having conductivity and the adjacent sides of the adjacent color filters provided on the light-shielding film 102 form slopes which are inclined in opposite directions, and the slopes are slopes and abut on each other to form an overlap. Color filter 104 and this color filter 104
The structure has an insulating film 103 provided on the insulating film 103 and a transparent electrode 106 provided on the insulating film 103.

By overlapping the color filter 104 in the same manner as in the fourth embodiment described with reference to FIG. 4, it is possible to obtain an insulating layer having a multi-layer structure including the color filter 104 and the insulating film 103. .

This means that the color filter 10
4, in the same manner as the fourth embodiment described with reference to FIG. 4, by adjoining the adjacent color filters 104 whose opposite sides form slopes having slopes opposite to each other, on the slopes on the light-shielding film. , Color filter 104
It is possible to obtain an insulating layer having a multilayer film structure including the insulating film 103 and the insulating film 103.

Similar to the fourth embodiment described with reference to FIG. 4, in the fifth embodiment shown in FIG. 5, the protective film 105 is used.
It is possible to eliminate the step of providing the liquid crystal display panel and provide a low-cost liquid crystal display panel. Moreover, if the appropriate overlap is performed, the flatness of the transparent electrode 106 can be improved as a result.

FIG. 6 shows a first example of the sixth embodiment of the present invention.
FIG. 3 is a cross-sectional view showing the substrate 101 of No. 1, which is the structure of the first substrate 101 in a monochrome display liquid crystal display panel that does not use a color filter.

The manufacturing process of the structure shown in FIG. 6 will be briefly described. First, a chromium thin film is formed on the entire surface of the first substrate 101 by a sputtering method or a vacuum evaporation method. The chrome thin film is formed into a predetermined pattern by a photoetching method, and the light shielding film 102 is provided.

Silicon oxide, which is a hard transparent insulator, is formed on the light-shielding film 102 by a sputtering method to form an insulating film 103, and a transparent acrylic resin is applied on the entire surface of the insulating film 103 by a spin coating method. Then, a protective film 105 is provided. Further, an indium tin oxide thin film is formed on the entire surface of the protective film 105 by a sputtering method, and then a predetermined pattern is formed by a photo etching method.
6 is provided.

As described above, in the sixth embodiment, the conductive light shielding film 102 provided on the substrate, the insulating film 103 provided on the light shielding film 102, and the protective film 105 provided on the insulating film 103. Since the structure has the transparent electrode 106 provided on the protective film 105, an insulating layer having a multilayer film structure can be obtained.

Since the insulating film 103 and the protective film 105 are provided between the light shielding film 102 and the transparent electrode 106,
It is possible to prevent an electrical short circuit between the light shielding film 102 and the transparent electrode 106.

FIG. 7 shows a first example of the seventh embodiment of the present invention.
FIG. 4 is a cross-sectional view showing the substrate 101 of FIG. 1, showing a structure in which an insulating film 103 is provided on a protective film 105 in a substrate having no color filter.

As shown in FIG. 7, a conductive light shielding film 102 provided on the first substrate 101, a protective film 105 provided on the light shielding film 102, and an insulating film 103 provided on the protective film 105. Transparent electrode 10 provided on the insulating film 103
6 and 6.

Similar to the sixth embodiment described with reference to FIG. 6, an insulating layer having a multilayer film structure can be obtained also in the seventh embodiment. Therefore, the transparent electrode 106 and the light shielding film 1
The occurrence of an electrical short circuit with 02 can be suppressed by the protective film 105 and the insulating film 103.

FIG. 8 shows a first example of the eighth embodiment of the present invention.
3 is a cross-sectional view showing the substrate 101 of FIG. In the eighth embodiment, the function of the insulating film 103 is changed to the color filter 104.
Is gained by overlapping.

The effects and the like due to the overlap of the color filters 104 are as described in the description of the fourth and fifth embodiments described with reference to FIGS. 4 and 5, and the description thereof will be omitted.

The gist of the present invention is apparent from the above description of the embodiment, but if a little supplement is further made, the first embodiment shown in FIG. 1 or the sixth embodiment shown in FIG. In the description of the example, a chromium thin film is used as the light shielding film 102.
However, as the light-shielding film 102, a thin film of tantalum, nickel, aluminum titanium, or the like that can obtain sufficient light-shielding characteristics may be used instead.

As the insulating film 103, silicon oxide was formed by using the sputtering method. However, in addition to silicon oxide, silicon nitride, silicon carbide, titanium oxide, zirconium oxide, etc. may be used for printing, vacuum deposition, and dipping. And the like.

Further, as the protective film 105, a transparent polyimide resin or a transparent epoxy resin can be used in addition to the transparent acrylic resin. In addition, the protective film 10
As a forming method of 5, a printing method and a dipping method can be used other than the spin coating method.

Further, with respect to the color filter 104, it is possible to form the color filter 104 by using a printing method or a pigment dispersion method other than the dyeing method.

In the case of the embodiment shown in FIGS. 1, 4, and 6, the insulating film 103 is the first substrate 101 having excellent heat resistance.
And installation on the light shielding film 102 by a metal thin film,
The insulating film 103 that is stable at a relatively high temperature can be provided. Further, since such a stable film is used, the conventional manufacturing process can be used as it is.

Next, the relationship between the insulating film 103 and the protective film 105 will be described in comparison with FIG. 2 and FIG. The insulating film 103 and the protective film 105 both function as an insulating layer. However, the insulating film 103 has an insulating function exclusively, and the protective film 105 has an insulating function as well as the above-described planarization purpose. It can be understood as a film that has Therefore, when the materials and the film thickness of the both are different, FIGS. 2 and 3 show different embodiments.

However, the insulating film 103 is replaced with the protective film 10.
When the same material as that of No. 5 and the same film thickness are provided so that both have an insulating function and a planarizing function equally,
And FIG. 3 are structurally the same.

The same applies to FIGS. 6 and 7. In FIGS. 6 and 7, since the color filter 104 that forms the step is not present, the flattening function required for the protective film 105 is not necessary so much. Therefore, if the insulating film 103 is made of the same material as the protective film 105 and has the same film thickness, the structures shown in FIGS. 6 and 7 are structurally the same.

However, when the color filter 104 is not provided, other functions are required for these insulating layers.

That is, when the light-shielding film 102 is provided in a cross pattern over the entire effective display surface of the liquid crystal display panel, and all the light-shielding films 102 are electrically connected, each transparent electrode 106 has a light-shielding film 102. Capacitively through. This capacitive coupling causes a distortion in the drive voltage applied to the liquid crystal in relation to the electric resistance of the transparent electrode 106, and causes the display state of the liquid crystal display panel to deteriorate.

Therefore, it is necessary to make the space between the transparent electrode 106 and the light-shielding film 102 sufficient to make the electric capacity between them as small as possible. Therefore, when the insulating film 103 is mainly used for the insulating function and the protective film 105 is used for reducing the electric capacity, and the materials or the film thicknesses of the both are changed, the structures shown in FIGS. 6 and 7 are different from each other. It becomes.

[0091]

As is apparent from the above description, according to the present invention, in a liquid crystal panel having a conductive light-shielding film, a new insulating film is provided between the light-shielding film and the transparent electrode, or an adjacent color filter is provided. By overlapping with each other, a multilayer film including a protective film and an insulating film, a color filter and an insulating film, or a color filter protective film is formed between the light-shielding film and the transparent electrode. Thus, even if there is a pinhole in any of the layers, this film structure can reliably prevent an electrical short circuit between the light shielding film and the transparent electrode.

Therefore, it is not necessary to use a light-shielding film using an insulator having an insufficient light-shielding property, and a liquid crystal panel having excellent light-shielding properties and flatness and high display quality can be produced without lowering the yield. can do.

Further, since the liquid crystal display panel of the present invention has the multilayer film structure formed by using the existing protective film or color filter, it is possible to add the minimum number of steps, so that the price is greatly increased. Absent.

Further, when the light-shielding layer made of a metal thin film is provided, the protective film also has a function as a part of the multilayer film insulating layer. If it is lost and a pinhole exists in the insulating film, an electrical short circuit between the transparent electrode and the light shielding film also occurs. Therefore, adjacent color filters are overlapped with each other and an insulating structure is formed between the light-shielding film and the transparent electrode by the multilayer film including the color filter and the insulating film, thereby preventing insulation failure due to pinholes. By overlapping the color filters as in the embodiment described using the color filters, it is possible to obtain an insulating layer having a multilayer film structure including a color filter and an insulating film. As shown in the embodiment, the step of providing a protective film can be eliminated, and a low cost liquid crystal display panel can be provided. Further, by performing an appropriate overlap, the effect of improving the flatness of the transparent electrode can be obtained as a result.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a substrate having a light shielding film in a first embodiment of the present invention.

FIG. 2 is a sectional view showing a substrate having a light shielding film in a second embodiment of the present invention.

FIG. 3 is a sectional view showing a substrate having a light shielding film in a third embodiment of the present invention.

FIG. 4 is a sectional view showing a substrate having a light shielding film in a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing a substrate having a light shielding film in a fifth embodiment of the present invention.

FIG. 6 is a sectional view showing a substrate having a light shielding film in a sixth embodiment of the present invention.

FIG. 7 is a sectional view showing a substrate having a light shielding film in a seventh embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a substrate having a light shielding film in an eighth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a structure of a conventional liquid crystal display panel.

FIG. 10 is a cross-sectional view showing a substrate having a light shielding film of a conventional liquid crystal display panel.

FIG. 11 is a cross-sectional view showing a substrate having a light shielding film of a conventional liquid crystal display panel.

[Explanation of symbols]

101 substrate 102 light-shielding film 103 insulating film 104 color filter 105 protective film 106 transparent electrode

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[Procedure amendment]

[Submission date] March 31, 2003 (2003.3.3)
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[0027]

[Means for Solving the Problems ]
To this end, the present invention seals a liquid crystal between the first and second substrates.
A plurality of color filters are provided on the first substrate of the liquid crystal panel.
Luthers are arranged side by side in a predetermined pattern
A liquid crystal panel having at least the
The opposite sides of the color filter are in opposite directions.
Forms a sloping slope, this slope abuts each other only on the slope
It is characterized by forming an overlap. further,
A transparent electrode is provided on the liquid crystal side above the color filter.
It is characterized by being provided. Further, in front of the first substrate
A conductive light-shielding film is provided between the color filters.
At least the first substrate, the light-shielding film, and the
A part forming a multilayer structure with a color filter and the transparent electrode
Position, the overlap of the color filters
It is characterized by being made. Furthermore, the
A multi-layered structure that overlaps the light-shielding film and the insulating film.
-The filter and the transparent electrode are laminated in this order to form a multilayer film.
It is characterized by having a structure. Furthermore, the light shielding
The multilayer structure on the film covers the light-shielding film.
Error filter, insulating film, and transparent electrode are stacked in this order.
It has a multi-layered structure.

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Therefore, it is necessary to make the space between the transparent electrode 106 and the light-shielding film 102 sufficient to make the electric capacity between them as small as possible. Therefore, when the insulating film 103 is mainly used for the insulating function and the protective film 105 is used for reducing the electric capacity, and the materials or the film thicknesses of the both are changed, the structures shown in FIGS. 6 and 7 are different from each other. It becomes. The liquid of the embodiment of the present invention described in detail above
The crystal panel consists of two substrates with a plurality of transparent electrodes.
Before sealing with a sealing material with the surfaces with the bright electrodes facing each other
A liquid crystal panel with a basic structure in which a liquid crystal material is injected into the encapsulation
At that, the conductive light-shielding film provided on the substrate and the light-shielding
Insulating film provided on the film and color fill provided on the insulating film
And a protective film provided on the color filter, and a protective film
A liquid crystal panel having a transparent electrode provided thereon. Well
In addition, two substrates with multiple transparent electrodes
Within the above-mentioned sealing, with the formed surfaces facing each other and sealing with a sealing material
In the liquid crystal panel, which is the basic structure in which the liquid crystal material is injected into
The conductive light-shielding film provided on the substrate and the light-shielding film provided on the substrate
Color filter and the color filter
An insulating film, a protective film provided on the insulating film, and a protective film provided on the protective film
A liquid crystal panel having a transparent electrode. Also, multiple
Two substrates with transparent electrodes on the surface with transparent electrodes
Facing each other and sealed with a sealing material, and the liquid crystal material is placed in the sealing.
In the injected basic configuration liquid crystal panel, set it on the substrate.
Conductive light-shielding film and color provided on the light-shielding film
A filter and a protective film provided on the color filter,
An insulating film provided on the protective film and a transparent electrode provided on the insulating film
And a liquid crystal panel having. In addition, multiple transparent electrodes
The two substrates thus formed are made to face each other with the surfaces on which the transparent electrodes are formed facing each other.
A base which is sealed with a sealing material and a liquid crystal material is injected into the sealing.
In the liquid crystal panel of this configuration, the conductivity provided on the substrate
A light-shielding film having a film, an insulating film provided on the light-shielding film, and an insulating film
On the color filter provided above and on the color filter
A liquid crystal panel having a transparent electrode provided. In addition,
2 substrates with a number of transparent electrodes
The opposite surfaces are made to face each other and sealed with a sealing material, and the liquid crystal
On the substrate in the liquid crystal panel with the basic composition
And a conductive light-shielding film provided on the
Color filter and insulating film provided on the color filter
And a liquid crystal panel having a transparent electrode provided on the insulating film.
is there. In addition, two substrates with a plurality of transparent electrodes are transparent.
Before sealing with a sealing material with the surfaces with the bright electrodes facing each other
A liquid crystal panel with a basic structure in which a liquid crystal material is injected into the encapsulation
At that, the conductive light-shielding film provided on the substrate and the light-shielding
An insulating film provided on the film, a protective film provided on the insulating film, and a protective film.
A liquid crystal panel having a transparent electrode provided on a protective film.
In addition, two substrates on which a plurality of transparent electrodes are formed are transparent electrodes.
Sealing is performed by facing the surfaces with
In the liquid crystal panel that has a basic structure in which a liquid crystal material is injected
And a conductive light-shielding film provided on the substrate and on the light-shielding film.
The protective film provided on the protective film, the insulating film provided on the protective film, and the insulating film
A liquid crystal panel having a transparent electrode provided thereon. Well
In addition, two substrates with multiple transparent electrodes
Within the above-mentioned sealing, with the formed surfaces facing each other and sealing with a sealing material
In the liquid crystal panel, which is the basic structure in which the liquid crystal material is injected into
The conductive light-shielding film provided on the substrate and the light-shielding film provided on the substrate
Color filter and the color filter
A liquid crystal display having a protective film and a transparent electrode provided on the protective film.
It is a flannel. The insulating film is made of silicon oxide, nitride
Silicon, silicon carbide, titanium oxide, zirconium oxide
It consists of one or more materials selected from Well
In addition, two substrates with multiple transparent electrodes
Within the above-mentioned sealing, with the formed surfaces facing each other and sealing with a sealing material
In the liquid crystal panel, which is the basic structure in which the liquid crystal material is injected into
Conductive film provided on the substrate and transparent above the film
An electrode is provided, and at least between the film and the transparent electrode.
A liquid crystal panel having an insulating film. In addition, multiple transparent
Two substrates with poles faced with transparent electrodes
Then, seal with a sealing material and inject liquid crystal material into the sealing.
In the basic configuration of the liquid crystal panel,
Before disposing an electrically conductive film and a transparent electrode above the film,
At least a color filter between the film and the transparent electrode
A liquid crystal panel having an insulating film. In addition, multiple transparent
Two substrates with poles faced with transparent electrodes
Then, seal with a sealing material and inject liquid crystal material into the sealing.
In the basic configuration of the liquid crystal panel,
Before disposing an electrically conductive film and a transparent electrode above the film,
Between the film and the transparent electrode, a protective film and a color filter
A liquid crystal panel having an edge film. In addition, this carafe
The filter has multiple colors and the color with the color filter
The above configuration has an overlapping structure with adjacent colors.
A liquid crystal panel in which the film is arranged below
It is Le. In addition, the liquid crystal is sealed between the first and second substrates.
In the liquid crystal panel, the conductivity provided on the first substrate
And a insulating film provided on the light-shielding film
Color filter provided on the insulating film and this color fill
The transparent electrodes provided on the
The filters are overlapped with each other so that the light shielding film and the transparent film are transparent.
Between the electrode and the color filter and the insulating film,
2 is a liquid crystal panel having an insulating structure formed of a multilayer film.
Also, the overlap of this color filter is small.
It is a liquid crystal panel. In addition, liquid between the first and second substrates
In a liquid crystal panel in which crystals are sealed, on the first substrate
The conductive light-shielding film to be provided and the cover provided on the light-shielding film.
Color filter and insulation on this color filter
The film and the transparent electrode provided on this insulating film
The light-shielding film is formed by overlapping the color filters with each other.
And the transparent electrode between the color filter and the transparent electrode.
Liquid crystal panel with an insulating structure composed of a multilayer film composed of an edge film
It is Le. Also, the overlap of the color filter
It is a small LCD panel.

Continued front page    F term (reference) 2H048 BA02 BA45 BB02 BB08 BB10                       BB32 BB42                 2H091 FA35Y FB07 FB08 FC10                       FC29 FD04 FD06 LA03 LA11                       LA12 LA13                 5C094 AA06 AA16 BA43 CA19 CA24                       DA13 DB01 EA05 ED02 ED15                       FA02 FB12 FB15

Claims (7)

[Claims] 1. In a liquid crystal panel in which liquid crystal is sealed between a first and a second substrate, a conductive light shielding film provided on the first substrate and an insulating film provided on the light shielding film. A color filter provided on the insulating film and a transparent electrode provided on the color filter are provided. The color filters and the insulating film are provided between the light shielding film and the transparent electrode by overlapping the adjacent color filters with each other. A liquid crystal panel characterized in that an insulating structure is constituted by a multi-layered film. 2. A liquid crystal panel in which liquid crystal is sealed between a first and a second substrate, and a conductive light shielding film provided on the first substrate and a color filter provided on the light shielding film. An insulating film provided on the color filter and a transparent electrode provided on the insulating film are provided, and the adjacent color filters overlap each other, and the color filter and the insulating film are provided between the light shielding film and the transparent electrode. A liquid crystal panel characterized in that an insulating structure is constituted by a multi-layered film. 3. The liquid crystal panel according to claim 1, wherein the overlap of the color filters is small. 4. A color filter of a plurality of colors is arranged adjacent to each other in a predetermined pattern on the first substrate of a liquid crystal panel in which liquid crystal is sealed between the first and second substrates. In a liquid crystal panel having at least a structure in which a transparent electrode is provided above the color filter, the opposite sides of the adjacent color filters form slopes of mutually opposite slopes, and the slopes only abut on each other and overlap each other. A liquid crystal panel characterized by being formed. 5. A conductive light-shielding film is provided between the first substrate and the color filter, and is a multilayer including at least the first substrate, the light-shielding film, the color filter, and the transparent electrode. The liquid crystal panel according to claim 4, wherein an overlap of the color filters is formed in a structural portion. 6. The multi-layered structure on the light-shielding film has a multi-layered film structure in which a color filter and a transparent electrode overlapping the light-shielding film and the insulating film are laminated in this order. Item 5. The liquid crystal panel according to item 5. 7. The multi-layered structure on the light-shielding film has a multi-layered film structure in which a color filter overlapping the light-shielding film, an insulating film, and a transparent electrode are laminated in this order. Item 5. The liquid crystal panel according to item 5.