JPH11119208A - Color liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a semitransmissible half-reflection type color liquid crystal(LC) display device having a constitution capable of securing high quality and being produced by a simple manufacturing method and preventing a color filter pattern from being uselessly seen through at the time of shielding transmitted light while holding clear color display. SOLUTION: The color LC display device is provided with an LC element sealing a liquid crystal layer 7 and transparent electrodes between transparent LC substrates and including a polarized plate for controlling transmitted light, at least a semitransparent reflection board 8 and a color filter layer 10 having a prescribed pattern corresponding to the LC device, the layer 10 is arranged along one side of the reflection board 8 which is opposite to the side facing the LC layer 7 and the LC device and the layer 10 are unitedly joined to obtain the display device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device that emits color light, and more particularly to a color liquid crystal display device that can be suitably used for portable equipment.

[0002]

2. Description of the Related Art As a liquid crystal display device that colorizes light emitted by a liquid crystal element, a transmission type using a backlight as a light source,
Conventionally, a reflection type that receives and reflects external light and a transflective type that includes a translucent reflection plate are known. Each of these liquid crystal display devices is mainly provided with a color filter for colorizing the liquid crystal display, and this color filter is disposed on the liquid crystal side of the glass substrate, and in the case of a transmission type liquid crystal display, It has the function of separating the light from the backlight side and passing only certain colors. Further, even in the case of a reflection type liquid crystal display, the liquid crystal display is similarly arranged on the liquid crystal side of the glass substrate and colorizes the liquid crystal display by a color separation function of light reflected from the reflection plate.

FIG. 4 is a sectional view of a main part of a conventional color liquid crystal display device. In FIG. 4, an upper polarizing substrate 21 and a lower polarizing substrate 22 each capable of transmitting only light having a certain polarization direction are laminated on a transparent upper liquid crystal substrate 23 and a lower liquid crystal substrate 24 using glass, respectively. A liquid crystal layer 27 is formed between the upper and lower liquid crystal substrates 23 and 24. The liquid crystal layer 27 is, for example, a twisted nematic liquid crystal or a super twisted nematic liquid crystal, and forms an upper transparent electrode 26 and a lower transparent electrode 28 using a transparent conductive indium oxide-based thin film or the like. And the lower transparent electrode 2
A color filter layer 20 protected by a transparent protective layer 25 is formed between the upper layer 8 and the upper liquid crystal substrate 23.

In such a transmission type color liquid crystal display device, a color image can be formed by irradiating light a from a backlight 29 using, for example, a cathode ray tube or an LED. That is, as for the irradiation light a, only a linearly polarized light component parallel to the polarization direction of the lower polarizing substrate 22 is transmitted to the liquid crystal layer 27, and the transmitted light that passes through the liquid crystal layer 27 in the liquid crystal layer 27 due to a change in the alignment state of the liquid crystal due to the electric field. Is selectively rotated, and the main transmitted light is colored by the color filter layer 20. Then, only the transmitted light having a polarization component parallel to the upper polarizing substrate 21 of the colored light is transmitted, and a color display is obtained on the display by the transmitted light.

On the other hand, a portable device such as a mobile phone is used in any place such as a bright outdoor area or a dark room, so that the transflective type can be used for both the reflective type and the transmissive type. It is considered that the liquid crystal display device is useful. This transflective liquid crystal display device is capable of transmitting a certain amount of visible light between a liquid crystal element and a backlight and simultaneously reflecting the visible light. The basic configuration is to provide a semi-transmissive reflection plate having high transmissivity and reflectivity. As this semi-transmissive reflection plate, for example, a substrate in which a metal thin film having a thickness of about 3 to 30 nm is formed on the surface of a substrate such as a transparent substrate or a translucent scattering substrate is generally used.

As such a transflective liquid crystal element, there is, for example, a liquid crystal element disclosed in Japanese Utility Model Laid-Open No. 3-22222. FIG.

The liquid crystal display device disclosed in Japanese Utility Model Laid-Open Publication No. 3-22222 has a monochrome display function, and does not include a color filter layer and has a semi-transmissive reflection on a bottom surface of the lower polarizing substrate 22. Plate 30 and transflective substrate 31
Is different from the color liquid crystal display device of FIG. 4 in that an opening 32 is opened in this, and the same members are indicated by common reference numerals.

In the case where the semi-transmissive reflection plate 31 having such an opening 32 is provided, the light a irradiated from the backlight 29 irradiates the semi-transmissive reflection plate 31 while the liquid crystal layer 2
7, only the light that has passed through the opening 32 enters the liquid crystal layer 27. On the other hand, the external light b from the upper polarizing substrate 21 enters the liquid crystal layer 27 in the entire area of the display device.

Here, when the luminous intensity of the external light b is high, a reflection type display utilizing the reflection of the semi-transmissive reflection plate 31 is obtained, whereas when the external light b is weak, the light emitted from the backlight 29 is emitted. The transmission type display is made by the light passing through the opening 32 of FIG. Therefore, the opening 32 has the external light b
And the display for the irradiation light a from the backlight 29, and the range in which the opening 32 is located functions as a transflective display device.

FIG. 6 is a cross-sectional view of a main part of a transflective liquid crystal display device disclosed in Japanese Patent Laid-Open No. 57-40285. JP-A-57-40285
The liquid crystal display device disclosed in Japanese Patent Application Laid-Open Publication No. H11-26095 includes a liquid crystal layer 27, upper and lower liquid crystal substrates 23 and 24, and upper and lower polarizing substrates
On the rear side of a liquid crystal panel made of a liquid crystal panel, a colored plate 33 provided with a semi-transmissive reflector 31 and a light source serving as a backlight 29 are provided. The colored plate 33 has a uniform structure in which particles for imparting light scattering properties are dispersed or the like, and is for obtaining a uniform illumination effect on transmitted light a from a light source. .

[0011]

In a general color liquid crystal display device, as shown in the example of FIG. 4, since it is provided between the liquid crystal substrates 23 and 24 above and below the color filter layer 20, high definition is achieved. Although it is excellent in color display and the like, such a configuration tends to complicate the manufacturing process.

For example, a protective layer 25 and an upper transparent electrode 26 are formed on the color filter layer 20 and the surface thereof is subjected to an alignment treatment such as rubbing.
Many post-processes such as sealing 7 are required. Therefore, during such a process, there is a high possibility that the color filter layer 20 is damaged or lost due to defects.
The occurrence rate of defective products is higher than when the color filter layer 20 is not provided.

This is because the color filter layer 20 for colorization is provided between the upper and lower liquid crystal substrates 23 and 24 in the transflective liquid crystal display device shown in FIGS. If so, it can happen as well.

In general, portable devices such as mobile phones are
Unlike a full-color display or the like, a display with relatively large pixels in a figure or the like for displaying the state of the device is intended to be obtained by a transflective display. In this case, it is said that, when a color display is to be performed on a graphic or a large character, it is not always necessary to provide a color filter layer between the upper and lower liquid crystal substrates 23 and 24 as in the conventional example. This is because there is no obstacle due to parallax between incident light and reflected light in the case of display using large pixels. Therefore, when the color filter layer 20 is provided outside the liquid crystal element, the manufacturing thereof is simplified, and the defect rate can be reduced.

However, with respect to a color filter layer having a pattern shape large enough to be visually recognized, simply disposing the color filter layer outside a liquid crystal substrate or a polarizing plate constituting an outer shell of a liquid crystal element requires a liquid crystal layer. Even when the transmitted light is shielded, the pattern shape and the outer shape of the color filter layer may be seen through, and not only the appearance is poor but also the display is confusing. The phenomenon in which the color filter layer can be seen through when the color filter layer is disposed outside the liquid crystal element is caused by a case where a liquid crystal substrate having anisotropic optical refractive index is used or a case where the thickness of the liquid crystal layer is small. Etc. appear when the contrast ratio is low, particularly in a film liquid crystal element using a film as a liquid crystal substrate. In addition, when the color filter layer is disposed outside the liquid crystal substrate or the polarizing plate and is used only as a reflection type color liquid crystal display device using reflected light of external light, the amount of reflected light is reduced by the color filter layer or the polarizing plate, and the color is reduced. There was a problem that the display was dark and unclear.

The problem to be solved in the present invention is that the structure of the device is simple to manufacture and high quality can be ensured, and the color filter pattern does not appear unnecessarily when the transmitted light is blocked while enabling clear color display. It is an object of the present invention to provide a transflective color liquid crystal display device.

[0017]

According to the present invention, there is provided a color liquid crystal display device comprising a liquid crystal element in which a liquid crystal layer and a transparent electrode are enclosed by a transparent liquid crystal substrate and having a polarizing plate for controlling transmitted light; A transparent filter, and a color filter layer having a predetermined pattern corresponding to the liquid crystal element, wherein the color filter layer is arranged along the semi-transmissive reflector on the side opposite to the surface facing the liquid crystal layer, the liquid crystal The device and the color filter layer are integrally joined.

According to this structure, the liquid crystal element and the filter layer are separately manufactured in advance, and they are integrally joined to each other, so that the light transmitted by the backlight irradiation light is transmitted by the color filter layer. Clear color display becomes possible. Further, since the color filter layer is provided along the surface opposite to the side where the semi-transmissive reflector faces the liquid crystal layer, even if the contrast ratio of a film liquid crystal element or the like is relatively low, external light When there is only incident light, the pattern of the color filter layer does not show through, and even when this external light and the irradiation light of the backlight coexist, there is transmitted light colored by the color filter layer, so that color display is not possible. it can.

Here, when a plurality of light emitting diodes having different coloring characteristics are arranged as a backlight corresponding to the predetermined pattern of the color filter layer, the coloring effect of the predetermined pattern on transmitted light can be clarified. Furthermore, if the semi-transmissive reflector has the property that the transmittance of light to the liquid crystal layer side is higher than the reflectance of incident light from the liquid crystal side, the color display when external light and irradiation light coexist is clarified. Can be.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, there is provided a liquid crystal element in which a liquid crystal layer and a transparent electrode are enclosed by a transparent liquid crystal substrate, and a polarizing plate for controlling transmitted light; Plate, comprising a color filter layer having a predetermined pattern corresponding to the liquid crystal element, the color filter layer as an arrangement along the semi-transmissive reflector opposite to the surface facing the liquid crystal layer, the liquid crystal element, A color liquid crystal display device in which the color filter layer is integrally joined. According to the first aspect of the present invention, since a liquid crystal element and a color filter layer are separately prepared in advance and a color display is enabled by joining them together, easy production and high quality are ensured. The color filter layer having a predetermined pattern is arranged along the semi-transmissive reflector on the side opposite to the surface facing the liquid crystal layer, so that the predetermined pattern of the color filter layer is not seen through by external light, At least when there is transmitted light in which the irradiation light is colored by the color filter layer, it has an effect that a color display of a predetermined pattern can be clearly displayed.

According to a second aspect of the present invention, there is provided a liquid crystal device in which a liquid crystal layer and a transparent electrode are enclosed by a liquid crystal substrate made of a transparent film, and provided with a polarizing plate for controlling transmitted light, and at least have flexibility. A semi-transmissive reflection plate, comprising a color filter layer formed on a film-shaped transmissive substrate and having a predetermined pattern corresponding to the liquid crystal element, wherein the color filter layer is opposite to a surface facing the liquid crystal layer. A color liquid crystal display device in which the liquid crystal element and the color filter layer are integrally joined as an arrangement along the semi-transmissive reflection plate.

According to a second aspect of the present invention, a liquid crystal element and a color filter layer, both of which are in the form of a film, are separately prepared in advance, and these are integrally joined to enable color display. Easiness and high quality are ensured, and even if the film liquid crystal element has a low contrast ratio by disposing a color filter layer having a predetermined pattern along the semi-transmissive reflector opposite to the surface facing the liquid crystal layer. The predetermined pattern of the color filter layer is not seen through by the external light, and the color display of the predetermined pattern can be clearly displayed at least when there is transmitted light in which the irradiation light is colored by the color filter layer.

According to a third aspect of the present invention, in the color liquid crystal display device according to the first and second aspects, a plurality of light emitting diodes having different color developing characteristics correspond to a predetermined pattern of a color filter layer as a backlight. The light emitting diode has a small shape,
For example, a light emitting diode emitting red light is arranged for a predetermined pattern having a red color filter layer, and a light emitting diode emitting green light is arranged for another predetermined pattern having a green color filter layer. By arranging light emitting diodes of a specific color in the vicinity of a predetermined pattern of a specific color, it is possible to clarify the coloring effect of each predetermined pattern on each transmitted light.

[0024] The invention according to claim 4 is the invention according to claims 1 to 3.
In the color liquid crystal display device according to any one of the above, a color filter layer is formed on a flexible semi-transmissive reflective plate or a supporting substrate of the flexible semi-transmissive reflective plate. By forming the color filter layer on a flexible base material such as a film, it is very easy to attach the liquid crystal element and the color filter layer in manufacturing when bonding them together. It has the effect that it can be performed.

[0025] The invention according to claim 5 is the invention according to claims 1 to 4.
In the color liquid crystal display device according to any one of the above, the semi-transmissive reflective plate has a characteristic that the transmittance of light to the liquid crystal layer side is higher than the reflectance of incident light from the liquid crystal side,
Even when the intensity of the external light and the intensity of the irradiation light of the backlight coexist at the same level, the intensity of the transmitted light colored by the color filter layer can be increased, and thus the color display can be clearly displayed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a main part of a color liquid crystal display device of the present invention.

In FIG. 1, similarly to the conventional example, an upper polarizing substrate 1 and a lower polarizing substrate 2 each capable of transmitting only light of a fixed polarization direction are provided by a transparent upper liquid crystal substrate using glass. 3 and the lower liquid crystal substrate 4, respectively, and a liquid crystal layer 7 is formed between the upper and lower liquid crystal substrates 3 and 4. On the upper and lower surfaces of the liquid crystal layer 7, an upper transparent electrode 5 and a lower transparent electrode 6 each using a transparent conductive indium oxide-based thin film or the like are arranged, and these members constitute a liquid crystal element.

A color filter layer 10 having a predetermined pattern is formed separately from the liquid crystal element. The color filter layer 10 is formed by laminating a semi-transmissive reflector 8 on the upper surface of a light-transmissive supporting base material 9 and covering the lower surface with a transparent protective layer 11. An adhesive layer 12 is formed to be integrated with the lower polarizing substrate 2. Here, the liquid crystal element and the color filter layer 10 are separately manufactured in the manufacturing process.

In the present invention, the liquid crystal element and the color filter layer 10 are separately manufactured, and the adhesive layer 1 formed on the upper surface of the transflective plate 8 of the color filter layer 10 is formed.
2, the liquid crystal element and the color filter layer 10 are integrated, so that the number of manufacturing steps is reduced as compared with the case where the color filter layer is formed directly on the liquid crystal substrate as in the conventional example, High quality can be ensured because the defective rate of the semiconductor device can be reduced.

When the liquid crystal element and the color filter layer 10 are integrated, a semi-transmissive reflector 8 is interposed between the color filter layer 10 and the liquid crystal layer
The color filter layer 10 is located on the surface opposite to the side. For this reason, the external light b shown in FIG. 1 is reflected by the semi-transmissive reflector 8 without reaching the color filter layer 10, or is transmitted through the semi-transmissive reflector 8 to pass through the color filter layer 10. Pass to the side. Therefore, the display device 10 does not see through the external light b from the display surface side.

In such a state, the backlight 1
When the backlight 3 is turned on, the irradiation light a from the backlight 13 is colored by the color filter layer 10 and passes through the semi-transmissive reflector 8 to reach the liquid crystal layer 7. Therefore,
By the irradiation light “a” from the backlight 13, color display by color emission from the upper polarizing plate 1 becomes possible. The state of the color display by the irradiation light a depends on the intensity of the irradiation light a and the transmittance of the semi-transmissive reflection plate 8 irrespective of the presence or absence of the external light b. The semi-transmissive reflector 8 can be configured so that the transmittance of visible light is higher than the reflectance of visible light.

This is because a semi-transmissive reflecting plate 8 in which the thickness of a metal thin film portion made of, for example, aluminum or silver is reduced so that the visible light transmittance becomes 50% or more and the reflectance becomes less than 50%. It may be used. If the transmittance of visible light is made higher than the reflectance in this way, even if there is a certain amount of external light b, the reflection thereof is suppressed, and the color of the color filter layer 10 using the backlight 13 as a light source is reduced. Light emission can be dominant. Therefore, the obtained color display can be made clearer, and good light emission can be obtained.

FIG. 2 is a sectional view of a main part of the color liquid crystal display device of the present invention. This is obtained by laminating a color filter layer 10 on a transparent base material 14 and bonding it to a semi-transmissive reflection plate 8 by an adhesive protective layer 11, and other configurations are the same as those shown in FIG. The same is true. As compared with the case where the color filter layer 10 of FIG. 1 is formed on the support base 9 of the semi-transmissive reflection plate 8, as shown in FIG.
0 is formed on the transparent substrate 14, the liquid crystal element, the support substrate 9 on which the semi-transmissive reflector 8 is formed, and the transparent substrate 14 on which the color filter layer 10 is formed They can be manufactured separately and combined, which facilitates alignment.

FIG. 3 is a sectional view of a main part of the color liquid crystal display device of the present invention. This is because the configurations of the color filter layer 10 and the liquid crystal element are the same as those shown in FIG.
In FIG. 3, a plurality of light emitting diodes having different coloring characteristics, such as a red light emitting diode 15, a green light emitting diode 16, and a blue light emitting diode 17, are arranged corresponding to a predetermined pattern of the color filter layer 10 as a backlight. I have. Here, the configuration corresponding to the predetermined pattern means that the red light emitting diode 15 is disposed immediately below the red pattern in the color filter layer 10 and the green light emitting diode 16 is disposed immediately below the green pattern. Blue light emitting diode 17 for the blue pattern.
Is disposed immediately below. Light-emitting diodes are small in shape, and the light-emitting diodes themselves can be arranged directly below them according to the color pattern of a color liquid crystal display device used for portable applications, and large backlights such as light guide plates and cold cathode tubes It is possible to reduce the size of the entire color liquid crystal display device without using a liquid crystal display. Therefore, by arranging a plurality of light emitting diodes having different coloring characteristics immediately below the color filter layer 10 in correspondence with the predetermined pattern, the color filters are irradiated by the light a, a ', a "of each color generated by each light emitting diode. The transmitted light passing through the layer 10 becomes clear, and the irradiation light that spreads from one light emitting diode of one specific color to the surroundings is reduced as long as the color filter layer 10 of another color is provided around the light emitting diode. Since no light is transmitted, the display surface is not adversely affected as unnecessary transmitted light.

FIGS. 1, 2 and 3, which are the embodiments of the present invention described above, show that the external light b
For the incident light, a monochrome image is displayed and the display becomes a reflection type. However, the color image by the color filter layer 10 is changed to the transmission type by the irradiation light a from the backlight 13 regardless of the presence or absence of the external light b. Is displayed. That is,
If the backlight 13 is turned on even during the period of use as a reflection type, a clear color image can be obtained, and it is possible to use the image by switching to both monochrome display and color display. These effects are particularly effective for relatively large display patterns such as figures and characters, and provide a brighter color display than a conventional reflection type color liquid crystal display device through a color filter with respect to light reflected by external light. Is possible. Therefore, the color liquid crystal display device of the present invention has a configuration in which manufacture is simple and high quality can be ensured, and a clear color display is possible while the color filter pattern is not unnecessarily seen through when the transmitted light is shielded. This is a transflective color liquid crystal display device.

[0036]

According to the first aspect of the present invention, a liquid crystal element and a color filter layer are separately manufactured in advance, and a color display is made possible by integrally joining them.
Since the manufacturing process can be simplified and the loss of defects of the color filters can be prevented, high quality can be ensured. Further, by arranging the color filter layer along the semi-transmissive reflector on the side opposite to the side facing the liquid crystal layer, even when used as a reflection type without a predetermined pattern of the color filter layer being seen through by external light. Without mistaking the display,
The color display of the predetermined pattern by the irradiation light can be clarified.

According to a second aspect of the present invention, a liquid crystal element and a color filter layer, both of which are in the form of a film, are separately prepared in advance, and a color display is made possible by joining them together. A film liquid crystal device having a low contrast ratio, in which easiness and high quality are ensured, and a color filter layer having a predetermined pattern is arranged along the semi-transmissive reflector opposite to the surface facing the liquid crystal layer. Also, the predetermined pattern of the color filter layer is not seen through by the external light, and the color display of the predetermined pattern can be clearly displayed when there is transmitted light in which the irradiation light is colored by the color filter layer.

According to a third aspect of the present invention, there is provided the color liquid crystal display device according to the first and second aspects, wherein a plurality of light emitting diodes having different coloring characteristics from the backlight are arranged corresponding to a predetermined pattern of the color filter layer. Since the light emitting diode is small in size, a light emitting diode of a specific color is arranged in the vicinity of a predetermined pattern of a specific color to clarify the coloring effect of each predetermined pattern on each transmitted light, thereby providing a clear color. Can be displayed.

According to a fourth aspect of the present invention, in the color liquid crystal display device according to any one of the first to third aspects, the color filter layer is formed of a flexible semi-transmissive reflecting plate or a flexible reflecting plate. The liquid crystal element is formed on a supporting base material of a semi-transmissive reflector, and the color filter layer is formed on a flexible base material such as a film so that the liquid crystal element can be manufactured in a color filter layer. Can be extremely easily attached when joining them together.

According to a fifth aspect of the present invention, in the color liquid crystal display device according to any one of the first to fourth aspects, the semi-transmissive reflector has a transmittance of light to the liquid crystal layer side which is equal to the incident light from the liquid crystal side. And the intensity of the transmitted light colored by the color filter layer can be increased even when the intensity of the external light and the irradiation light of the backlight coexist to the same extent. Therefore, the sharpness of the color display is improved, and the color display is optimized.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a color liquid crystal display device of the present invention.

FIG. 2 is a sectional view of a main part of the color liquid crystal display device of the present invention.

FIG. 3 is a sectional view of a main part of the color liquid crystal display device of the present invention.

FIG. 4 is a sectional view of a main part of a conventional color liquid crystal display device.

FIG. 5 is a sectional view of a main part of a conventional transflective liquid crystal display device.

FIG. 6 is a sectional view of a main part of a conventional transflective liquid crystal display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 upper polarizing substrate 2 lower polarizing substrate 3 upper liquid crystal substrate 4 lower liquid crystal substrate 5 upper transparent electrode 6 lower transparent electrode 7 liquid crystal layer 8 semi-transmissive semi-reflective plate 9 support base material 10 color filter layer 11 protective layer 12 adhesive layer 13 back Light 14 Transparent substrate 15 Red light emitting diode 16 Green light emitting diode 17 Blue light emitting diode 20 Color filter layer 21 Upper polarizing substrate 22 Lower polarizing substrate 23 Upper liquid crystal substrate 24 Lower liquid crystal substrate 25 Protective layer 26 Upper transparent electrode 27 Liquid crystal layer 28 Lower Transparent electrode 29 Backlight 30 Transflective transflector 31 Transflective substrate 32 Opening 33 Colored plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toyoichi Yoshino 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A liquid crystal element having a liquid crystal layer and a transparent electrode enclosed by a transparent liquid crystal substrate and having a polarizing plate for controlling transmitted light, at least a semi-transmissive reflector, and a predetermined pattern corresponding to the liquid crystal element. And a color filter layer having a color filter layer, and the color filter layer is arranged along the semi-transmissive reflector opposite to the surface facing the liquid crystal layer, and the liquid crystal element and the color filter layer are integrally joined. A color liquid crystal display device, comprising: 2. A liquid crystal element in which a liquid crystal layer and a transparent electrode are enclosed by a liquid crystal substrate made of a transparent transparent film and provided with a polarizing plate for controlling transmitted light; a semi-transmissive reflecting plate having at least flexibility; A color filter layer formed on a film-like transparent substrate and having a predetermined pattern corresponding to the liquid crystal element, wherein the semi-transmissive reflector is on the opposite side of the color filter layer from the surface facing the liquid crystal layer. Wherein the liquid crystal element and the color filter layer are integrally joined. 3. The color liquid crystal display device according to claim 1, wherein a plurality of light emitting diodes having different coloring characteristics are arranged corresponding to a predetermined pattern of the color filter layer as a backlight. 4. The color filter layer according to claim 1, wherein the color filter layer is formed on a flexible semi-transmissive reflector or a supporting substrate of the flexible semi-transmissive reflector. 4. The color liquid crystal display device according to any one of 1 to 3. 5. The semi-transmissive reflector according to claim 1, wherein the transmissivity of the light to the liquid crystal layer is higher than that of the incident light from the liquid crystal. A color liquid crystal display device as described in Crab.