JPH11167107A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify processes by using a color filter of a liquid crystal display device capable of color display to hold electric insulation between a reflecting plate and a signal electrode. SOLUTION: The liquid crystal display device has a reflecting plate 2 provided on a 1st substrate 1, a color filter 5 provided on the reflecting late 2, a signal electrode 3 provided on the color filter 5, a data electrode 12 provided on a 2nd substrate 11, and a liquid crystal layer 20 sandwiched between the 1st substrate 1 and 2nd substrate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective liquid crystal display device or a transflective liquid crystal display device for displaying a liquid crystal by using light from a light source on a viewer side of the liquid crystal display device. Further, a reflection type liquid crystal display device is provided, wherein a reflection plate is provided on one of the substrates facing the liquid crystal layer of the first substrate and the second substrate, and further a color filter is provided on the reflection plate. Or a transflective liquid crystal display device.

[0002] The present invention also relates to a structure for providing a color filter on a reflection plate to further improve display characteristics, improve brightness, or enable display in a dark external environment.

[0003]

2. Description of the Related Art At present, a reflector is provided on one of the first and second substrates facing the liquid crystal layer, an insulating film is provided on the reflector, and a signal electrode is provided on the insulating film. The structure to be provided is based on the application number filed before the present invention, Japanese Patent Application No. Hei.
No. 8369. The purpose of this earlier application is
In the reflector provided on the opposite side (back side) of the substrate facing the liquid crystal layer, the display of the liquid crystal layer is blurred due to the thickness of the first substrate. In order to ensure electrical insulation between the reflection plate and the signal electrode, an insulating film is provided between the reflection plate and the signal electrode. Further, by using an insulating material for the reflector, a configuration without an insulating film is also possible.

A conventional example will be described below with reference to the drawings. FIG. 16 is a diagram showing a planar structure of a liquid crystal display device in a conventional example. FIG. 17 is a sectional view taken along line AA shown in FIG. A conventional example will be described with reference to FIGS.

[0005] First, a reflection plate 2 is adhered on a first substrate 1. An insulating film 3 is provided on the reflector 2 so as to cover the reflector 2, and a signal electrode 4 is provided on the insulating film 3. In order to obtain a good reflectivity for the reflector 2,
In order to employ the reflector 2 made of a metal film, an insulating film 3 is provided to obtain electrical insulation between the reflector 2 and the signal electrode 4.

A data electrode 12 made of a transparent conductive film is provided on a second substrate 11 opposed to the first substrate 1 with a predetermined gap. Further, a liquid crystal layer 20 is provided in a gap between the first substrate 1 and the second substrate 11, and the liquid crystal layer 20 is sealed with a sealing material 21 and a sealing material 15. Also,
On the insulating film 3 and the signal electrode 4 on the first substrate 1, and on the second substrate 11 and the data electrode 12, there are alignment films 14 for regularly aligning the liquid crystal layer 20.

[0007] A polarizing plate 22 is arranged on the viewer side of the second substrate 11. As described above, a voltage is applied between the signal electrode 3 and the data electrode 14, and the light (external light) from the observer side of the second substrate 11 is applied to the polarizing plate 22 using the change in the optical characteristics of the liquid crystal layer 20. The light is modulated by the liquid crystal layer 20 and the reflection plate 2 to control the reflectivity of light from external light to perform display.

However, when the structure of the reflector 2 is actually used, a portion where the reflector 2 is provided, a structure for forming a color filter, a structure for improving reliability, and
It is necessary to propose a specific structure for the structure of the reflector when a plurality of first substrates are formed from a large substrate.

[0009]

That is, in the case where a color filter is provided, a structure for ensuring insulation between the reflector and the signal electrode by using the color filter. Further, there is an insufficient proposal for a structure for preventing an electrical short circuit between a reflector and a signal electrode due to a pinhole of a color filter, or a structure for improving insulation between a reflector and a signal electrode by a plurality of insulating films.

Further, the visibility of the liquid crystal display device due to the positional relationship between the observer, the liquid crystal display device, and the external light source is insufficient when a mirror surface is used for the reflector.

Further, in the case of a reflector having no opening, an auxiliary light source provided on the surface of the first substrate opposite to the viewer cannot be transmitted. Is required.

A reflector is provided on the entire surface of the first substrate,
In addition, when a plurality of first substrates are cut out from a large substrate, the side walls of the reflector are exposed to the outside without being covered with the insulating film. Therefore, the reflection plate is deteriorated.

[0013]

In order to achieve the above object, the liquid crystal display of the present invention utilizes the following constitution.

According to the liquid crystal display device of the present invention, a reflection plate provided on a first substrate, a color filter provided on the reflection plate, a signal electrode provided on the color filter, and a first substrate provided with a predetermined gap therebetween are opposed to each other. A structure having a data electrode provided on a second substrate to be formed and a liquid crystal layer sealed between the first substrate and the second substrate is employed.

According to the liquid crystal display device of the present invention, a reflector provided on the first substrate, a color filter provided on the reflector, a protective insulating film provided on the color filter, and a signal electrode provided on the protective insulating film are provided. And a data electrode provided on a second substrate opposed to the first substrate with a predetermined gap provided therebetween, and a liquid crystal layer sealed between the first substrate and the second substrate.

According to the liquid crystal display device of the present invention, there is provided a reflector provided on the first substrate, a color filter provided on the reflector, a protective insulating film provided on the color filter, and a thin-film insulating provided on the protective insulating film. A signal electrode provided on the film and the thin-film insulating film; a data electrode provided on a second substrate facing the first substrate with a predetermined gap provided between the first electrode and the second substrate;
A structure having a liquid crystal layer sealed between the substrate and the substrate is adopted.

The liquid crystal display device of the present invention includes a reflector provided on a substrate having irregularities, a color filter provided on the reflector, a signal electrode provided on the color filter, and a predetermined gap with the first substrate. A structure having a data electrode provided on the opposing second substrate and a liquid crystal layer sealed between the first substrate and the second substrate is employed.

In the liquid crystal display device of the present invention, the surface of the reflection plate made of a metal film provided on the first substrate has an insulating material of the metal film constituting the reflection plate, and further has a color filter. Adopt structure.

In the liquid crystal display device of the present invention, a polymer resin and a polymer resin are provided between the reflector provided on the first substrate and the first substrate or between the reflector and the color filter. A structure having a scattering layer made of scattering materials having different refractive indexes is employed.

The liquid crystal display device of the present invention comprises a reflector provided on the first substrate, an interlayer insulating film provided on the reflector, a color filter provided on the interlayer insulating film, and a signal electrode provided on the color filter. A structure having a data electrode provided on a second substrate opposed to the first substrate with a predetermined gap therebetween, and a liquid crystal layer sealed between the first substrate and the second substrate is adopted.

According to the liquid crystal display device of the present invention, a reflection plate provided on a first substrate, a color filter provided on the reflection plate, a signal electrode provided on the color filter, and a predetermined gap provided with the first substrate are opposed to each other. A data electrode provided on a second substrate to be formed, a liquid crystal layer sealed between the first substrate and the second substrate, and an intersection of the signal electrode and the data electrode is used as a display pixel portion. A display region including a pixel portion is formed, and a structure having an opening is used for a reflection plate between the display pixel portions.

According to the liquid crystal display device of the present invention, a reflection plate provided on a first substrate, a color filter provided on the reflection plate, a signal electrode provided on the color filter, and a predetermined gap provided with the first substrate are opposed to each other. A data electrode provided on a second substrate to be formed, a liquid crystal layer sealed between the first substrate and the second substrate, and an intersection of the signal electrode and the data electrode is used as a display pixel portion. Forming a display area comprising a pixel portion, wherein the reflector between the display pixel portions has an opening, and the opening of the reflector and the color filter is at the same place. .

According to the liquid crystal display device of the present invention, a reflection plate provided on the first substrate, a color filter provided on the reflection plate, a signal electrode provided on the color filter, and a predetermined gap between the first substrate and the first substrate are provided. A data electrode provided on a second substrate to be formed, a liquid crystal layer sealed between the first substrate and the second substrate, and an intersection of the signal electrode and the data electrode is used as a display pixel portion. A display area composed of a pixel portion is formed, and the reflector between the display pixel portions has an opening, and the opening of the reflector and the color filter is at the same place, and further adjacent to each other. The lower part between the signal electrodes and the lower part of the reflector are the same.

According to the liquid crystal display device of the present invention, a reflection plate provided on the first substrate, a color filter provided on the reflection plate, a signal electrode provided on the color filter, and a predetermined gap provided with the first substrate are opposed to each other. A data electrode provided on a second substrate to be formed, a liquid crystal layer sealed between the first substrate and the second substrate, and an intersection of the signal electrode and the data electrode is used as a display pixel portion. A display region comprising a pixel portion is formed, and the display region and the periphery of the display region have openings in a reflection plate.

The liquid crystal layer used in the liquid crystal display device of the present invention is characterized in that it is a twisted nematic liquid crystal or a super twisted nematic liquid crystal.

The liquid crystal display device according to the present invention is characterized in that the second substrate has a scattering layer, a retardation film and a polarizing plate on the surface opposite to the surface facing the liquid crystal layer.

The liquid crystal display device of the present invention is characterized in that an auxiliary reflector is provided on the surface of the first substrate having an opening in the reflector opposite to the surface facing the liquid crystal layer.

The liquid crystal display device of the present invention has a light source unit on a surface of the first substrate having an opening in the reflector opposite to the surface facing the liquid crystal layer, and the light source unit includes the reflector. The brightness of the area corresponding to the opening is stronger than the brightness of the other areas.

The reflector used in the liquid crystal display device of the present invention is made of a metal film and has substantially the same outer shape as the outer shape of the first substrate. Characterized by being covered with an insulating film containing a metal film as a main component.

<Operation> The liquid crystal display device of the present invention has a structure in which a reflector provided on a first substrate, a color filter and a signal electrode are provided, and a portion where the reflector and the signal electrode overlap each other is provided. By employing a structure having a color filter, an electrical short circuit between the reflector and the signal electrode can be prevented by the color filter.

In a display area composed of a pixel portion overlapping the signal electrode on the first substrate, the data electrode on the second substrate, and the liquid crystal layer, the signal electrode and the color filter have the same shape, so that the color filter Since a step and a portion where the film thickness of the color filter is small can be prevented, an electrical short circuit between the reflector and the signal electrode can be more efficiently prevented.

The color filter and the color filter are further provided with a protective insulating film made of a different material between the reflector and the signal electrode. It is possible to more completely prevent an electrical short circuit with the signal electrode. The protective insulating film, by adopting a method of insulating the metal film forming the reflector, adopts the above-described function, but also prevents deterioration during processing of the color filter provided on the reflector. be able to. In addition, when an aluminum (Al) film is used as the reflector, a pinhole is generated in the color filter, and when a pattern of the transparent conductive film is formed, the aluminum film is used for etching the transparent conductive film. Is corroded and becomes a large pinhole centering on the pinhole portion, which lowers the reflectance of the reflector. Therefore, it is very effective to provide a plurality of insulating films between the reflector and the signal electrode.

Further, when a reflector is formed, in the case of a mirror-like reflector, the reflection of an external light source and the reflection of the observer or scenery depend on the position of the observer, the external light source, and the position of the liquid crystal display device. And the visibility of the display is reduced.
Therefore, a scattering layer having a scattering material having a different refractive index from that of the polymer resin is provided between the reflector and the color filter, and scattering is performed on the reflector. Further, the electrical insulation between the reflection plate and the signal electrode can be improved by the polymer resin as compared with the case where the color filter is used alone.

When a plurality of first substrates are cut out from a large substrate, the reflector can be formed very simply by providing the reflector over substantially the entire surface of the large substrate.
However, when an aluminum film or an aluminum alloy film is used for the reflector, corrosion or deterioration occurs because the reflectors on the cut surfaces of the plurality of first substrates are exposed to the outside air. Therefore, corrosion or deterioration can be prevented by providing an insulating material to the reflector on the cut surface by insulating the constituent material of the reflector.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A liquid crystal display device according to a best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is an enlarged plan view of a part (shown by a circle) shown in FIG. FIG. 3 is a sectional view taken along line BB shown in FIG. Hereinafter, FIG. 1, FIG. 2 and FIG.
An embodiment will be described.

First, a reflection plate 2 made of an aluminum (Al) film is provided on a first substrate 1. Red, blue and green color filters 5 are provided on the aluminum film and on the first substrate 1 around the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of about 1.5 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

The color filter 5 and the first substrate 1
On top is a transparent conductive film, indium tin oxide (IT
O) M striped signal electrodes 3 made of a film are provided. On a second substrate 11 opposed to the first substrate 1 with a predetermined gap, N stripe-shaped data electrodes 12 orthogonal to the signal electrodes 3 are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes a pixel portion 19, and the M * N pixel portion 19 becomes a display portion. Color filter 5 for each color
Are the same color at the lower part of the signal electrode 3, and at the lower surface of the signal electrode 3, a step due to the color filter 5 is prevented. For this reason, the insulation of the color filter 5 is stable and high resistance can be maintained.

An alignment film 14 is provided on the signal electrode 3, the data electrode 12, and the surrounding area to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 of the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15 is held. Further, the data electrode 12 of the second substrate 11
On the opposite side (observer side), the retardation plate 27 and the polarizing plate 2
And 2. The display shows the signal electrode 3 and the data electrode 12.
, A predetermined voltage is applied to the liquid crystal layer 20, the retardation plate 27, the polarizing plate 22, and the reflecting plate 2 to control the reflection and absorption of light from an external light source.

As described above, the electrical insulation between the signal electrode 3 and the reflector 2 is sufficiently maintained by the color filter 5 provided on the reflector 2. Further, the color filter 5 is formed in a stripe shape in the same direction as the signal electrode 3 and the width of the signal electrode 3 is increased.
The possibility of disconnection between the reflector and the reflector 2 can be greatly reduced. Further, since the color filter 5 underlying the signal electrode 3 does not have a thin film portion or a narrow portion, there is no possibility of an electrical short circuit between the reflector 2 and the signal electrode 3 and the display quality is improved. It becomes possible.

<Second Embodiment> A liquid crystal display device according to a second embodiment of the present invention will be described below with reference to the drawings. The second embodiment relates to a structure in which two layers of a color filter and an insulating layer provided on the color filter to maintain the insulation between the reflection plate and the signal electrode more reliably achieve the insulation. . FIG. 4 shows a cross-sectional view according to the second embodiment. FIG. 4 is a cross-sectional view of a portion similar to the line BB in the first embodiment. Hereinafter, a second embodiment will be described with reference to FIG.

First, a reflector 2 made of a silver (Ag) film is provided on the first substrate 1. Red, blue and green color filters 5 are provided on the silver film and on the first substrate 1 around the silver film. FIG. 4 shows only the red color filter.
The color filter 5 is made of a photosensitive resin containing a pigment and has a thickness of about 0.5 micrometers (μm). Electrical insulation is more than gigaohm (GΩ),
For use in the reflection type, the film thickness is reduced to increase the transmittance of the color filter 5. Further, in order to improve the color mixing property of the color filter 5, a color filter configuration of a delta arrangement in which colors of adjacent color filters are different from each other with respect to a pixel portion 19 formed of an overlapping portion of the signal electrode 3 and the data electrode 12 is adopted. Therefore, the film thickness between adjacent color filters is variously distributed. Therefore, a protective insulating layer 4 made of a polyimide resin of 2 micrometers is provided on the color filter 5 by a spin coating method.

Further, on the upper surface of the protective insulating film 4, M stripe-shaped signal electrodes 3 made of an indium tin oxide (ITO) film, which is a transparent conductive film, are provided. On a second substrate 11 opposed to the first substrate 1 with a predetermined gap, N stripe-shaped data electrodes 12 orthogonal to the signal electrodes 3 are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes a pixel portion 19, and the M * N pixel portion 19 becomes a display portion.

An alignment film 14 is provided on the signal electrode 3, the data electrode 12, and the surrounding area to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 of the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15 is held. Since each pixel portion 19 uses a so-called passive matrix method in which no switching element is provided, the liquid crystal layer 20 has a twist angle of 210 ° to 270 ° in order to improve the contrast ratio. Uses a twisted nematic liquid crystal layer. The super twisted nematic liquid crystal layer is composed of an alignment film 1
Since the steps 4 cause disorder in the orientation, the provision of the protective insulating layer 4 for reducing the steps of the reflector 2 and the steps of the color filters 5 is effective in improving the display quality.

Further, the data electrode 1 on the second substrate 11
On the surface opposite to 2 (observer side), a retardation plate 27 and a polarizing plate 22 are provided. The display shows the signal electrode 3 and the data electrode 12
A predetermined voltage is applied to the liquid crystal layer 20, and the reflection and absorption are controlled by the phase difference plate 27, the polarizing plate 22, and the reflecting plate 2 by optical change of the liquid crystal layer 20.

As described above, although the electrical insulation between the signal electrode 3 and the reflection plate 2 can be substantially achieved by the color filter 5 provided on the reflection plate 2, the color filter 5
The thickness of the film is reduced, the transmittance is improved, and the alignment film 1 is further reduced.
By providing the insulating layer 3 on the color filter 5 in order to reduce the step due to the underlayer 4, the insulating property between the reflector 2 and the signal electrode 3 is greatly improved, and the orientation of the super twisted nematic liquid crystal is further improved. By doing so, the display quality can be improved.

<Third Embodiment> A liquid crystal display device according to a third embodiment of the present invention will be described below with reference to the drawings. The third embodiment has a structure of a reflector having irregularities, and further has a color filter and an insulating layer provided on the color filter in order to maintain insulation between the reflector having the irregularities and the signal electrode. By two layers of
The present invention relates to a structure having a color filter and an insulating layer for surely achieving insulation and smoothing unevenness of a reflection plate. FIG. 5 shows a cross-sectional view according to the third embodiment. FIG. 5 shows B in the first embodiment.
It is sectional drawing of the part corresponding to the -B line. Hereinafter, a third embodiment will be described with reference to FIG.

First, the first substrate 1 has an uneven portion 23 in a portion facing the liquid crystal layer 20. The uneven portion is made of a sealing material 21.
A resin mask is provided on the outer periphery of the
Can be easily formed by hydrofluoric acid treatment and scrub cleaning with a sponge to form roundness on the uneven surface.

Further, on the first substrate 1, a reflection plate 2 made of an aluminum (Al) film is provided. Red, blue and green color filters 5 are provided on the aluminum film and on the first substrate 1 around the aluminum film. FIG. 5 shows only the red color filter. The color filter 5 is made of a photosensitive resin containing a pigment and has a thickness of about 0.5 micrometers (μm). The electrical insulation is at least gigaohm (GΩ), but the film thickness is reduced to increase the transmittance of the color filter 5 for use in the reflection type. In addition, since the uneven portion 23 of the first substrate 1 is not completely relaxed, the insulating layer 4 made of a 3-micrometer polyimide resin is provided on the color filter 5 by a printing method.

On the insulating layer 4, there are provided M striped signal electrodes 3 made of an indium tin oxide (ITO) film which is a transparent conductive film. A signal electrode 3 is provided on a second substrate 11 facing the first substrate 1 with a predetermined gap.
N data electrodes 12 in the form of stripes are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes a pixel portion, and the M * N pixel portion becomes a display portion.

With the above structure, the unevenness 23 of the first substrate 1 is reflected only on the reflection plate 2 and the signal electrode 3 is formed by the color filter 5 and the insulating layer 4 which alleviate the unevenness 23.
Can be provided on a substantially flat base.

Further, an alignment film 14 is provided around the signal electrode 3, the data electrode 12, and the periphery thereof in order to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 is held by the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15. Since each pixel uses a so-called passive matrix method in which no switching element is provided, the liquid crystal layer 20 includes a liquid crystal layer 20 in order to improve a contrast ratio.
A super twisted nematic liquid crystal layer having a twist angle of 210 ° to 270 ° is employed. In the super twisted nematic liquid crystal layer, the alignment is disturbed due to the step of the alignment film 14 and the step of the base of the alignment film 14. Therefore, the insulating layer 4 for reducing the step of the reflector 2 and the step of the color filter 5 is provided. This is effective in improving display quality.

Further, the data electrode 1 of the second substrate 11
On the surface opposite to 2 (observer side), a retardation plate 27 and a polarizing plate 22 are provided. The display shows the signal electrode 3 and the data electrode 12
A predetermined voltage is applied to the liquid crystal layer 20 and the reflection and absorption of light from an external light source are controlled by the retardation plate 27, the polarizing plate 22, and the reflecting plate 2 by the optical change of the liquid crystal layer 20.

As described above, although the electrical insulation between the signal electrode 3 and the reflection plate 2 can be substantially achieved by the color filter 5 provided on the reflection plate 2, the color filter 5
The thickness of the first layer is reduced and the transmittance is improved.
Is not enough to alleviate the step of the uneven portion 23 of the substrate 1.
Therefore, by providing the insulating layer 4 on the color filter 5 in order to reduce the step due to the base of the signal electrode 3 and the alignment film 14, the step of the base is greatly reduced, and the orientation of the super twisted nematic liquid crystal is improved. As a result, the display quality can be improved. Furthermore, the unevenness 23 of the first substrate 1 and the unevenness of the reflector 2 greatly reduce the reflection of the environment or the reflection of the observer depending on the position of the external light source with respect to the reflector 2 or the position with the observer. it can.

<Fourth Embodiment> The structure of a first substrate used in a liquid crystal display device according to a fourth embodiment of the present invention will be described below with reference to the drawings. The fourth embodiment has a structure in which a protective insulating film is provided between a color filter and a reflector, and the protective insulating film is a film formed by insulating a constituent material of the reflector. FIG.
FIG. 14 shows a cross-sectional view of a first substrate according to a fourth embodiment. The fourth embodiment will be described below with reference to FIG.

On the first substrate 1, there is provided a reflector 2 made of an aluminum (Al) film provided partially. An aluminum oxide (Al 2 O 3) film, which is an anodic oxide film of an aluminum film, is provided on the reflection plate 2 as the protective insulating film 24. The aluminum oxide film is subjected to anodizing treatment using a phosphoric acid aqueous solution as an anodizing bath to form 0.1 μm. Since a thick aluminum oxide film lowers the reflectance of the aluminum film, a film thickness giving priority to the reflectance is selected.

Further, red, blue and green color filters 5 are provided on the protective insulating film 24 and on the first substrate 1 surrounding the insulating film 24. FIG. 6 shows only the red color filter. The color filter 5 is made of a photosensitive resin containing a pigment and has a thickness of about 1.5 micrometers (μm). The electrical insulation is at least gigaohm (GΩ).

Further, a signal electrode 3 made of an indium tin oxide (ITO) film, which is a transparent conductive film, is provided on the color filter 5.

As described above, the reflection plate 2 and the signal electrode 3
By inserting a plurality of insulating materials between the reflector 2 and the
The electrical insulation between the electrode and the signal electrode 3 is greatly improved. Further, by providing an insulating film by insulating the reflector 2 on a part of the insulator provided between the reflector 2 and the signal electrode 3, the reflector 2 can be completely covered with the insulator. Furthermore, since a film formation method different from other insulating materials provided on the reflection plate 2 can be used, the possibility of pinholes can be greatly reduced, so that an electrical short circuit between the reflection plate 2 and the signal electrode 3 can be prevented. .

<Fifth Embodiment> The structure of a first substrate used in a liquid crystal display device according to a fifth embodiment of the present invention will be described below with reference to the drawings. The fifth embodiment has a structure in which an insulating film containing a scattering material is provided between a color filter and a reflector. FIG. 7 is a sectional view of a first substrate according to the fifth embodiment. FIG.
The fifth embodiment will be described with reference to FIG.

On the first substrate 1, there is provided a reflector 2 made of a silver (Ag) film provided partially. On the reflection plate 2, an insulating film made of a polystyrene spacer 26 and a polyimide resin 25 of 2 μm and 5 μm is provided. Polyimide resin 25 and spacer 2
Due to the difference in refractive index of No. 6, the insulating film has scattering properties with respect to light from an external light source. By mixing a spacer having a small particle size and a spacer having a large particle size, it is possible to improve the dispersibility of the spacer having a large particle size and the scattering property.

Further, if only the insulating film having the scattering property is used,
Since the distribution of the electrical insulation between the reflector 2 and the signal electrode 3 tends to occur due to the aggregation or unevenness of the spacer 26,
In the present embodiment, the color filter 5 is provided on the insulating film. Further, in the present embodiment, the insulating layer 4 made of a polyimide resin is provided on the color filter 5 and the first substrate 1. The signal electrode 3 made of a transparent conductive film is provided on the insulating layer 4.

As is clear from the above description, the reflection plate 2
An insulating film having a scattering property is provided thereover. In addition, between the reflection plate 2 and the signal electrode 3, there is provided an insulating film having scattering properties and an insulating material including three layers of a color filter 5 and an insulation layer 4. The electrical insulation is greatly improved.

<Sixth Embodiment> Next, a sixth embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings. In the sixth embodiment, the signal electrode, the color filter, and the reflector have the same width. FIG. 8 is a plan view enlarging a part of the liquid crystal display device. FIG. 9 is a cross-sectional view showing only the first substrate taken along line CC shown in FIG. The sixth embodiment will be described below with reference to FIGS. 8 and 9 alternately.

First, a reflector 2 made of an aluminum (Al) film is provided on the first substrate 1. A color filter 5 is provided on the aluminum film and on the first substrate 1 in a region partly protruding from the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of approximately 2.0 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

The color filter 5 and the first substrate 1
On top is a transparent conductive film, indium tin oxide (IT
O) A striped signal electrode 3 made of a film is provided. Second substrate 1 facing first substrate 1 with a predetermined gap provided
On N, N stripe-shaped data electrodes 12 orthogonal to the signal electrodes 3 are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes the pixel section 19, and the M * N pixel section 1
9 is a display section.

An alignment film 14 is provided on the signal electrode 3, the data electrode 12, and the surrounding area to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 of the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15 is held. Further, the data electrode 12 of the second substrate 11
On the opposite side (observer side), the retardation plate 27 and the polarizing plate 2
And 2. The display shows the signal electrode 3 and the data electrode 12.
A predetermined voltage is applied to the liquid crystal layer 20, and the reflection and absorption of light from an external light source are controlled by a phase difference plate (not shown), the polarizing plate 22, and the reflecting plate 2 by the optical change of the liquid crystal layer 20.

The width W2 of the reflector 2 on the first substrate 1
And the width of the color filter 5 and the width W2 of the signal electrode 3 have the same width. Further, the sealing material 21 of the reflection plate 2
, The color filter 5 protrudes from the reflection plate 2 on the first substrate 1.
And the electrical insulation between them can be sufficiently ensured.

When the pattern defect of the signal electrode 3 or the pinhole of the color filter 5 occurs between the adjacent signal electrodes 3, the reflection plate 2 on the first substrate 1 and the color filter 5 Since all of the signal electrodes 3 are removed, the possibility of defects can be reduced. Therefore, the color filter 5 can sufficiently secure electrical insulation between the reflection plate 2 and the signal electrode 3.

<Seventh Embodiment> The structure of a first substrate used in a liquid crystal display device according to a seventh embodiment of the present invention will be described below with reference to the drawings. The seventh embodiment is directed to the first embodiment used for the liquid crystal display device described in the sixth embodiment.
Is to change a part of the substrate. FIG. 10 is a sectional view of a first substrate according to the seventh embodiment. Hereinafter, the seventh embodiment will be described with reference to FIG.

First, a reflection plate 2 made of an aluminum (Al) film is provided on the first substrate 1. A color filter 5 is provided on the aluminum film and on the first substrate 1 in a region partly protruding from the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of approximately 2.0 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

The color filter 5 and the first substrate 1
On top is a transparent conductive film, indium tin oxide (IT
O) A striped signal electrode 3 made of a film is provided.

The width W2 of the reflection plate 2 on the first substrate 1
And the width W2 of the color filter 5 are equal. However, the width W1 of the signal electrode 3 is smaller than the width W2 of the reflection plate 2 and the color filter 5, leaving a predetermined width on both sides of the reflection plate 2 and the color filter 5, and Are formed. Further, in the vicinity of the sealing member 21 of the reflection plate 2, the color filter 5 is formed by the first substrate 1 from the reflection plate 2.
Because of the protrusion, the electrical insulation between the reflection plate 2 and the signal electrode 5 can be sufficiently ensured.

When a pattern defect of the signal electrode 3 or a pinhole of the color filter 5 occurs between the adjacent signal electrodes 3, the reflection plate 2 on the first substrate 1 and the color filter 5 Since all of the signal electrodes 3 are removed, the possibility of defects can be reduced. Further, since the signal electrode 3 is provided inside the color filter 5, the withstand voltage between the adjacent signal electrodes 3 or
The dielectric strength between the reflection plate 2 and the signal electrode 3 can be improved.

<Eighth Embodiment> Next, an eighth embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings. In the eighth embodiment, the signal electrode, the color filter, and the reflector have the same width. Further, the reflecting plate provided on the first substrate is a mirror surface, and has a structure in which a diffusing plate is provided on the observer side of the second substrate. FIG. 11 is a diagram showing a cross section of the liquid crystal display device, and shows a portion corresponding to line BB in FIG. Hereinafter, the eighth embodiment will be described with reference to FIG.

First, a reflector 2 made of an aluminum (Al) film is provided on the first substrate 1. The aluminum film is a mirror surface according to the flatness of the surface of the first substrate 1.
Therefore, reflection of an external light source or the like is likely to occur. Further, a color filter 5 is provided on the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of approximately 2.0 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

On the color filter 5 and the first substrate 1, a transparent conductive film of indium tin oxide (IT)
O) A striped signal electrode 3 made of a film is provided. Second substrate 1 facing first substrate 1 with a predetermined gap provided
On N, N stripe-shaped data electrodes 12 orthogonal to the signal electrodes 3 are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes a pixel portion (not shown), and the display portion is formed from the M * N pixel portion.

An alignment film 14 is provided on the signal electrode 3, the data electrode 12, and the surrounding area to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 of the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15 is held. Further, the data electrode 12 of the second substrate 11
On the opposite side (observer side), the retardation plate 27 and the polarizing plate 2
And 2. Further, a resin layer 28 including a spacer 29 is provided on the viewer side of the polarizing plate 22. A hard coat (not shown) of silicon oxide (SiO 2) is provided on the resin layer 28.

The display is performed by applying a predetermined voltage to the signal electrode 3 and the data electrode 12, and by an optical change of the liquid crystal layer 20.
The reflection and absorption of light from an external light source are controlled by the phase difference plate 27, the polarizing plate 22, and the reflection plate 2 to perform the control. Further, the light from the observer side (external light source) and the reflected light from the reflection plate 2 are scattered by the resin layer 28 including the spacer 29 as a scattering material, so that reflection of the surrounding environment can be prevented.

The width of the reflector 2 on the first substrate 1, the width of the color filter 5, and the width of the signal electrode 3 are equal. Therefore, the electrical insulation between the reflection plate 2 and the signal electrode 5 can be sufficiently ensured. When the pattern defect of the signal electrode 3 or the pinhole of the color filter 5 occurs between the adjacent signal electrodes 3, the reflection plate 2 on the first substrate 1, the color filter 5 and the signal electrode Since all 3 are removed, the possibility of a defect can be reduced. Therefore, the color filter 5 can sufficiently secure electrical insulation between the reflection plate 2 and the signal electrode 3.

However, since the area occupied by the reflection plate 2 on the first substrate 1 is smaller than when the reflection plate 2 is provided on the entire surface, an auxiliary surface is provided on the back side of the first substrate 1. Is provided. By providing the auxiliary reflecting portion 30, it is possible to achieve a reflection intensity substantially equal to that in the case where the reflecting plate is provided on almost the entire surface of the first substrate 1.

The auxiliary reflecting portion 30 provided on the back side of the first substrate 1 is formed by forming a silver or aluminum film on a metal plate, and is further adhered to the first substrate 1 by an adhesive layer. Thus, it can be easily formed. FIG. 11 shows a configuration in which the auxiliary reflecting portion 30 is provided between the reflecting plates 2. However, the auxiliary reflecting portion 30 may be provided on the entire back surface of the first substrate 1.

<Ninth Embodiment> Next, a ninth embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings. In the ninth embodiment, the signal electrode, the color filter, and the reflector have the same width. Further, a light source section is provided on the back side of the first substrate. FIG. 12 is a diagram showing a cross section of the liquid crystal display device, and shows a portion corresponding to line BB in FIG. The ninth embodiment will be described below with reference to FIG.

First, a reflector 2 made of an aluminum (Al) film is provided on the first substrate 1. The aluminum film is a mirror surface according to the flatness of the surface of the first substrate 1.
Therefore, reflection of an external light source or the like is likely to occur. Further, a color filter 5 is provided on the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of approximately 2.0 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

On the color filter 5 and the first substrate 1, a transparent conductive film, indium tin oxide (IT)
O) A striped signal electrode 3 made of a film is provided. Second substrate 1 facing first substrate 1 with a predetermined gap provided
On N, N stripe-shaped data electrodes 12 orthogonal to the signal electrodes 3 are provided. The intersection between the signal electrode 3 and the data electrode 12 becomes a pixel portion (not shown), and the display portion is formed from the M * N pixel portion.

An alignment film 14 is provided on the signal electrode 3, the data electrode 12, and the surrounding area to arrange the liquid crystal layer 20 in a predetermined arrangement. The liquid crystal layer 20 of the first substrate 1, the second substrate 11, the sealing material 21, and the sealing material 15 is held. Further, the data electrode 12 of the second substrate 11
On the opposite side (observer side), the retardation plate 27 and the polarizing plate 2
And 2. The display shows the signal electrode 3 and the data electrode 12.
A predetermined voltage is applied to the liquid crystal layer 20, and the reflection and absorption of light from an external light source are controlled by the phase difference plate 27, the polarizing plate 22, and the reflecting plate 2 by the optical change of the liquid crystal layer 20.

The width of the reflector 2 on the first substrate 1, the width of the color filter 5, and the width of the signal electrode 3 are equal. Therefore, the electrical insulation between the reflection plate 2 and the signal electrode 5 can be sufficiently ensured. When the pattern defect of the signal electrode 3 or the pinhole of the color filter 5 occurs between the adjacent signal electrodes 3, the reflection plate 2 on the first substrate 1, the color filter 5 and the signal electrode Since all 3 are removed, the possibility of a defect can be reduced. Therefore, the color filter 5 can sufficiently secure electrical insulation between the reflection plate 2 and the signal electrode 3.

However, when the external environment on the observer side is dark, that is, when the light from the external light source is weak, the second
Since no light is emitted from the substrate 11 to the reflection plate 2, the visibility of the display of the liquid crystal display device is greatly reduced. Therefore, on the back side of the first substrate 1, an electroluminescent (EL) element of a planar light source is provided with the light source unit 31 and the light source unit 3.
A triangular prism portion 32, a holding layer 33, and a corrugated lens portion 34 are arranged on the surface of the device 1. The light from the light source 31 is
The light is emitted from portions other than the prism portion 32, passes through the holding layer 33, and reaches the lens portion 34 in contact with the first substrate 1. The light is emitted from between the reflectors 2 on the first substrate 1 through the liquid crystal layer 20 by the lens unit 34 and is emitted toward the observer. Also,
Light reflected from the reflector 2 is reflected by the surface of the light source unit 31 and the prism unit 32, and is emitted again from the lens unit 34. Further, the holding layer 33 can be made of, for example, air.

With the above configuration, display is possible even when the external environment of the liquid crystal display device is dark. Also, the second
The angle between the phase difference plate 27 and the polarizing plate 22 and the phase difference value of the phase difference plate 27, the twist angle of the liquid crystal layer 20, and the orientation direction of the liquid crystal layer 20 utilize the reflection plate 2. In this case, the contrast ratio and the brightness are emphasized, and the display when the light source unit 31 is turned on has a contrast ratio of about 3: 1 to 5: 1.

<Tenth Embodiment> Next, a tenth embodiment of the present invention will be described with reference to the drawings. This tenth
The embodiment has a step of cutting a plurality of first substrates from a large substrate, and further relates to a structure of the cut cross section. FIG. 13 is a plan view enlarging a part of a large substrate having a plurality of first substrates. FIG.
FIG. 14 is an enlarged sectional view of a part of the first substrate shown in FIG. 13. The tenth embodiment will be described below with reference to FIGS. 13 and 14 alternately.

First, a plurality of first substrates 1 are provided on a large substrate. As shown in FIG. 13, a first substrate 1 having four surfaces 35, 36, 37 and 38 is provided. On a large substrate, a reflector 2 made of an aluminum (Al) film is provided on almost the entire surface. A color filter 5 is provided on the aluminum film. The color filter is made of a photosensitive resin containing a pigment and has a thickness of approximately 2.0 micrometers (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved.

Further, a plurality of stripe-shaped signal electrodes 3 made of an indium tin oxide (ITO) film, which is a transparent conductive film, are provided on the color filter 5. Further, between the plurality of first substrates 1, there are cutting lines 39 and 40 for cutting into the first substrates 1. As shown in FIG.
The cut surface of the reflection plate 2 has a structure in which the reflection plate 2 is covered with an insulating layer 41 which is insulated. In this embodiment, after each first substrate 1 is cut from a large substrate, an aluminum oxide film is provided by performing anodic oxidation using the reflection plate 2 made of an aluminum film as an anode.

As described above, even when a plurality of first substrates 1 are formed from a large substrate, the electrical insulation between the reflection plate 2 and the signal electrodes 3 can be sufficiently achieved by the color filters 5. In addition, it is possible to prevent the deterioration of the reflection plate 2 by insulating the reflection plate 2 on the cut surface.

<Eleventh Embodiment> Next, an eleventh embodiment of the present invention will be described with reference to the drawings. This eleventh
The embodiment has a step of cutting a plurality of first substrates from a large substrate as in the tenth embodiment, and further relates to the structure of the cut cross section. FIG.
It is sectional drawing which expands a part of 1st board | substrate. The eleventh embodiment will be described below with reference to FIG.

First, a plurality of first substrates 1 are provided on a large substrate. On a large substrate, a reflector 2 made of an aluminum (Al) film is provided on almost the entire surface. An aluminum oxide film 24 which is an anodic oxide film of the aluminum film is coated on the entire surface of the aluminum film. The color filter 5 is provided on the aluminum oxide film 24. The color filter is made of a photosensitive resin containing a pigment and has a thickness of about 1.0 micrometer (μm). The electrical insulation was at least gigaohm (GΩ), and sufficient insulation was achieved. The color filter 5 is provided in a display area 42 facing a liquid crystal layer (not shown). The color filter 5 is not provided in the terminal portion 43 around the display area 42 of the first substrate 1 and the external circuit (not shown).

Further, a plurality of stripe-shaped signal electrodes 3 made of an indium tin oxide (ITO) film, which is a transparent conductive film, are provided on the color filter 5 and the aluminum oxide film. Further, between the plurality of first substrates 1, each of the first substrates 1 is cut, and as shown in FIG. 15, the cut surface of the reflection plate 2 is formed by insulating the insulation layer 4 of the reflection plate 2 itself.
1 is covered. In this embodiment, after each first substrate 1 is cut from a large substrate, an aluminum oxide film is provided by performing anodic oxidation using the reflection plate 2 made of an aluminum film as an anode.

As described above, even when a plurality of first substrates 1 are formed from a large substrate, the electrical insulation between the reflector 2 and the signal electrode 3 is maintained at the same level as the insulating film of the reflector 2. This can be achieved sufficiently by the color filter 5, and furthermore, the insulation of the reflector 2 at the cut surface can prevent the reflector 2 from deteriorating.

[0097]

As is apparent from the above description, in the liquid crystal display device of the present invention, a reflector provided on the first substrate,
It has a structure in which a color filter and a signal electrode are provided, and by adopting a structure having a color filter in a portion where the reflection plate and the signal electrode overlap each other, an electrical short circuit between the reflection plate and the signal electrode is prevented by the color filter. Can be prevented.

In a display area composed of a pixel portion overlapping the signal electrode on the first substrate, the data electrode on the second substrate, and the liquid crystal layer, the signal electrode and the color filter have the same shape, so that the color filter Since a step and a portion where the film thickness of the color filter is small can be prevented, an electrical short circuit between the reflector and the signal electrode can be more efficiently prevented.

By providing a color filter and a protective insulating film made of a material different from that of the color filter between the reflection plate and the signal electrode, even if a pinhole is generated in the color filter, the reflection is prevented. It is possible to more completely prevent an electrical short circuit between the plate and the signal electrode. The protective insulating film, by adopting a method of insulating the metal film forming the reflector, adopts the above-described function, but also prevents deterioration during processing of the color filter provided on the reflector. be able to. In addition, when an aluminum (Al) film is used as the reflector, a pinhole is generated in the color filter, and when a pattern of the transparent conductive film is formed, the aluminum film is used for etching the transparent conductive film. Is corroded and becomes a large pinhole centering on the pinhole portion, which lowers the reflectance of the reflector. Therefore, it is very effective to provide a plurality of insulating films between the reflector and the signal electrode.

Further, in the case of forming a reflecting plate, in the case of a mirror-like reflecting plate, reflection of an external light source, reflection of an observer or scenery depends on the position of an observer, an external light source, and the position of a liquid crystal display device. And the visibility of the display is reduced. Therefore, a scattering layer having a scattering material having a different refractive index from that of the polymer resin is provided between the reflector and the color filter, and scattering is performed on the reflector. Further, the electrical insulation between the reflection plate and the signal electrode can be improved by the polymer resin as compared with the case where the color filter is used alone.

When a plurality of first substrates are cut out from a large substrate, the formation of the reflection plate can be greatly simplified by providing the reflector on almost the entire surface of the large substrate. However, when an aluminum film or an aluminum alloy film is used for the reflector, corrosion or deterioration occurs because the reflectors on the cut surfaces of the plurality of first substrates are exposed to the outside air. Therefore, by providing an insulating material to the reflector of the cut surface by insulating the constituent material of the reflector, corrosion,
Alternatively, deterioration can be prevented.

In the present invention, the configuration in which the second substrate is arranged on the observer side, the data electrodes are provided on the second substrate, and the signal electrodes are provided on the first substrate has been described. The effects of the present invention can be naturally obtained by adopting a configuration in which signal electrodes are provided on the second substrate, data electrodes are provided on the first substrate, and a reflector and a color filter are provided on the first substrate.

In the present invention, an example is shown in which, after cutting each first substrate from a large substrate having a plurality of first substrates, deterioration of the reflector is prevented by insulating the reflector. This structure is the most effective, but a structure in which the cut surface of the reflector is protected by a resin is also effective. Also,
Electrical connection between the reflector and the driving circuit of the liquid crystal display device, and application of a predetermined voltage to the reflector prevents deterioration of the reflector and controls the optical change of the liquid crystal between the reflector and the data electrode. It is possible and effective.

In the present invention, the embodiment has been described with respect to a passive matrix type in which a switching element is not provided in each pixel portion. When a switching element is provided, a similar effect can be achieved by adopting a structure in which at least a reflection plate, a color filter, and a signal electrode are provided on a first substrate and the switching element is provided on a second substrate. .

[Brief description of the drawings]

FIG. 1 is a plan view of a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is an enlarged plan view showing a part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a sectional view of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 4 is a sectional view of a liquid crystal display device according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a liquid crystal display device according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a liquid crystal display device according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a liquid crystal display device according to a fifth embodiment of the present invention.

FIG. 8 is an enlarged plan view showing a part of a liquid crystal display device according to a sixth embodiment of the present invention.

FIG. 9 is a sectional view of a liquid crystal display device according to a sixth embodiment of the present invention.

FIG. 10 is a sectional view of a liquid crystal display device according to a seventh embodiment of the present invention.

FIG. 11 is a sectional view of a liquid crystal display device according to an eighth embodiment of the present invention.

FIG. 12 is a sectional view of a liquid crystal display device according to a ninth embodiment of the present invention.

FIG. 13 is a plan view showing a configuration of a large substrate in which a plurality of first substrates of the present invention are arranged on a large substrate.

FIG. 14 is a sectional view of a liquid crystal display device according to a tenth embodiment of the present invention.

FIG. 15 is a sectional view of a liquid crystal display device according to an eleventh embodiment of the present invention.

FIG. 16 is a plan view showing a liquid crystal display device according to the related art.

FIG. 17 is a cross-sectional view showing a liquid crystal display device according to the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 first substrate 2 reflector 3 signal electrode 4 protective insulating film 5 color filter 11 second substrate 12 data electrode 14 alignment film 15 sealing material 19 pixel portion 20 liquid crystal layer 21 sealing material 22 polarizing plate 23 irregularities 24 reflection Plate insulating layer 26 Scattering material 27 Phase difference plate 28 Resin layer 29 Spacer 30 Reflector 31 Light source 32 Prism 33 Holder 34 Lens 35, 36, 37, 38 First substrate 39, 40 Cutting section 42 Display area 43 Terminal

Claims (16)

[Claims] A reflector provided on the first substrate, a color filter provided on the reflector, a signal electrode provided on the color filter, and a second substrate opposed to the first substrate with a predetermined gap provided therebetween. A liquid crystal display device having a data electrode provided in the first substrate and a liquid crystal layer sealed between the first substrate and the second substrate. A reflector provided on the first substrate, a color filter provided on the reflector, a protective insulating film provided on the color filter, a signal electrode provided on the protective insulating film, and a first substrate. A liquid crystal display device comprising: a data electrode provided on a second substrate opposed to the first substrate with a predetermined gap; and a liquid crystal layer sealed between the first substrate and the second substrate. 3. A reflector provided on the first substrate, a color filter provided on the reflector, a protective insulating film provided on the color filter, a thin-film insulating film provided on the protective insulating film, and a thin-film insulating film A signal electrode provided on the second substrate, a data electrode provided on a second substrate facing the first substrate at a predetermined gap, and a liquid crystal layer sealed between the first substrate and the second substrate. Liquid crystal display. 4. A reflector provided on a substrate having irregularities,
A color filter provided on the reflector, a signal electrode provided on the color filter, a data electrode provided on a second substrate opposed to the first substrate with a predetermined gap provided between the first electrode and the first substrate;
A liquid crystal display device having a liquid crystal layer sealed between a first substrate and a second substrate. 5. The reflector according to claim 1, wherein the surface of the reflector made of a metal film provided on the first substrate is made of an insulating material of the metal film constituting the reflector. Liquid crystal display device. 6. A polymer resin, a polymer resin, and a scattering material having a different refractive index between a reflector provided on the first substrate and the first substrate or between the reflector and the color filter. The liquid crystal display device according to any one of claims 1 to 7, further comprising a scattering layer comprising: 7. A reflector provided on a first substrate, an interlayer insulating film provided on the reflector, a color filter provided on the interlayer insulating film, a signal electrode provided on the color filter, and a first substrate. A liquid crystal display device comprising: a data electrode provided on a second substrate facing a predetermined gap; and a liquid crystal layer sealed between the first substrate and the second substrate. 8. A reflector provided on the first substrate, a color filter provided on the reflector, a signal electrode provided on the color filter, and a second substrate opposed to the first substrate with a predetermined gap therebetween. And a liquid crystal layer sealed between the first substrate and the second substrate, wherein a display pixel portion is provided at an intersection of the signal electrode and the data electrode, and a display region comprising a plurality of display pixel portions is provided. Wherein the reflector between the display pixel portions has an opening. 9. A reflector provided on the first substrate, a color filter provided on the reflector, a signal electrode provided on the color filter, and a second substrate opposed to the first substrate with a predetermined gap therebetween. And a liquid crystal layer sealed between the first substrate and the second substrate, wherein a display pixel portion is provided at an intersection of the signal electrode and the data electrode, and a display region comprising a plurality of display pixel portions is provided. Wherein the reflector between the display pixel portions has an opening, and the opening of the reflector and the opening of the color filter are in the same place. 10. A reflector provided on the first substrate, a color filter provided on the reflector, a signal electrode provided on the color filter, and a second substrate opposed to the first substrate with a predetermined gap therebetween. And a liquid crystal layer sealed between the first substrate and the second substrate. An intersection of the signal electrode and the data electrode is a display pixel portion, and a display region including a plurality of display pixel portions is formed. The reflection plate between the display pixel portions has an opening, the opening of the reflection plate and the opening of the color filter are at the same place, and the lower portion between the adjacent signal electrodes and the reflection plate A liquid crystal display device characterized in that the lower portion is the same. 11. A reflector provided on the first substrate, a color filter provided on the reflector, a signal electrode provided on the color filter, and a second substrate opposed to the first substrate with a predetermined gap therebetween. And a liquid crystal layer sealed between the first substrate and the second substrate. An intersection of the signal electrode and the data electrode is a display pixel portion, and a display region including a plurality of display pixel portions is formed. A liquid crystal display device, comprising: a reflective region having an opening in a display region and a periphery of the display region. 12. The liquid crystal display device according to claim 1, wherein the liquid crystal layer is a twisted nematic liquid crystal or a super twisted nematic liquid crystal. 13. The device according to claim 1, further comprising a scattering layer, a retardation film, and a polarizing plate on a surface of the second substrate opposite to a surface facing the liquid crystal layer. Liquid crystal display device. 14. An auxiliary reflection plate is provided on a surface of the first substrate having an opening in the reflection plate, the surface being opposite to the surface facing the liquid crystal layer. The liquid crystal display device as described in the above. 15. A light source unit is provided on a surface of the first substrate having an opening in the reflector opposite to the surface facing the liquid crystal layer, and the light source is provided in a region corresponding to the opening of the reflector. 15. The liquid crystal display device according to claim 8, wherein the brightness is higher than the brightness of the other areas. 16. The reflector is made of a metal film, has substantially the same outer shape as the outer shape of the first substrate, and further has, in the outer cross section of the reflector, a metal film constituting the reflector as a main component. The liquid crystal display device according to any one of claims 1 to 15, wherein the liquid crystal display device is covered with an insulating film.