JP2000314879A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device which brightly displays information with easy visibility in electronic instruments such as a watch and which can afford variation in design. SOLUTION: A liquid crystal display panel 10, which is the liquid crystal display device, is constituted of a liquid crystal cell 12 comprising a liquid crystal layer enclosed between a pair of transparent substrates having electrodes on the inside surfaces placed opposite to each other respectively, an absorption type polarizing plate 14 arranged on the viewer's side of the liquid crystal cell 12 which absorbs linearly polarized light having a plane of vibration with a direction perpendicular to its transmission susceptible axis, a reflection type polarizing plate 16 arranged on the side opposite to the viewer's side of the liquid crystal cell 12 which reflects linearly polarized light having a plane of vibration with a direction perpendicular to its transmission susceptible axis and a color filter 18 arranged either on the viewer's side of the absorption type polarizing plate 14 or between the absorption type polarizing plate 14 and the reflection type polarizing plate 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a liquid crystal display device used as a display panel of various electronic devices such as watches (watches and clocks) and portable information devices.

[0002]

2. Description of the Related Art Using a liquid crystal display panel as a liquid crystal display device, time information such as hour, minute, second, etc. and date, day of the week, month,
Clocks that digitally display calendar information such as the year have been widely used in watches and table clocks equipped with a crystal oscillation circuit. There is also a combination clock that combines an analog display in which time information is displayed with hands and a digital display in which time information and calendar information are displayed by numbers and characters.

Further, there has been proposed an analog timepiece in which a dial is constituted by a liquid crystal display panel to selectively display various scale patterns, or to simulately display hands such as an hour hand, a minute hand and a second hand. (See, for example,
No. 153066). In addition to watches, mobile phones, electronic desk calculators, portable game consoles, and other various electronic devices are reflective panels that display necessary information (character information, image information, etc.) and are small and consume very little power. Are widely used.

In a conventional liquid crystal display panel as such a liquid crystal display device, a liquid crystal cell in which liquid crystal is sealed is sandwiched between two transparent substrates each having an electrode on the opposing inner surface, and upper polarized light is provided on both sides. A plate and a lower polarizing plate are arranged. When an electric field is applied by applying a voltage between the electrodes of a pair of substrates of the liquid crystal cell, the optical characteristics of the liquid crystal change, and the transmission and absorption of light incident on the liquid crystal display panel are partially controlled to a predetermined value. Is displayed. Each of the upper and lower polarizers is a polarizer that absorbs linearly polarized light having a vibration plane orthogonal to the axis of easy transmission. In such a timepiece using a conventional liquid crystal display panel, in a general normally white mode, time information and calendar information are displayed in black on a white background.

[0005]

However, simply displaying the time information and calendar information in a black (dark) display on a white (bright) ground as described above does not change the design and lacks an interesting taste. Consumers get bored.
For this reason, the consumption of digital display clocks has been declining in recent years. Also, combination clocks have not become very popular, and analog display clocks using liquid crystal display panels have not become widespread.

The liquid crystal display panels of other electronic devices are similarly
Generally, various kinds of information are displayed in black on a white background, and in some cases, black-and-white inversion display can be performed in the inversion mode. However, the change was poor and lacked an interesting taste. The present invention has been made in view of such a situation, and an object of the present invention is to provide a liquid crystal display device capable of displaying information in an electronic device such as a timepiece in a bright and easy-to-view manner and capable of changing the design.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a liquid crystal display having the following configuration. On the viewing side of a liquid crystal cell in which a liquid crystal layer is sealed between a pair of transparent substrates each having an electrode on the opposing inner surface, linearly polarized light having a vibration plane in a direction parallel to the easy transmission axis is transmitted to the viewing side of the liquid crystal cell. Arrange an absorption-type polarizing plate that absorbs linearly polarized light having a vibration plane in the direction perpendicular to it, and on the side opposite to the viewing side,
A reflection-type polarizing plate is disposed that transmits linearly polarized light having a vibration plane in a direction parallel to the easy transmission axis and reflects linearly polarized light having a vibration plane in a direction perpendicular to the easy transmission axis. Further, a color filter is provided on the viewing side of the absorption type polarizing plate or between the absorption type polarizing plate and the reflection type polarizing plate.

Further, it is preferable to dispose a light absorbing plate on the liquid crystal display panel on the side opposite to the viewing side of the reflective polarizing plate. Further, a light scattering plate may be provided on the viewing side of the absorption type polarizing plate. Alternatively, a backlight may be provided on the side opposite to the viewing side of the reflective polarizing plate. In the liquid crystal display panel provided with the backlight, a light scattering plate may be provided on the viewing side of the absorption type polarizing plate. In each of the above liquid crystal display devices, the axis of easy transmission of the absorbing polarizer disposed on the viewing side of the liquid crystal cell and the major axis direction of the liquid crystal molecules on the viewing side in the liquid crystal layer of the liquid crystal cell are made parallel to each other. It is desirable that the axis of easy transmission and the major axis direction of liquid crystal molecules on the side opposite to the viewing side in the liquid crystal layer of the liquid crystal cell be parallel or orthogonal.

Alternatively, the axis of easy transmission of the absorbing polarizer disposed on the viewing side of the liquid crystal cell and the major axis direction of liquid crystal molecules on the viewing side of the liquid crystal layer of the liquid crystal cell are orthogonal to each other to facilitate transmission of the reflective polarizing plate. The axis and the major axis direction of the liquid crystal molecules on the side opposite to the viewing side in the liquid crystal layer of the liquid crystal cell may be parallel or orthogonal. (These conditions are particularly necessary when a twisted nematic liquid crystal layer having a twist angle of 90 ° is used in a liquid crystal cell.)

The following may be used as the color filters of the liquid crystal display panel. 1) a selective transmission type color filter that transmits almost only light of a specific wavelength; 2) linearly polarized light having a vibration plane perpendicular to the easy transmission axis transmits only light of a specific wavelength and absorbs light of other wavelengths; A color polarizing plate that transmits all linearly polarized light having a vibration plane parallel to the easy transmission axis, 3) a dielectric multilayer film that reflects light of a specific wavelength among incident light and transmits light of other wavelengths,

When a selective transmission type color filter is used, a plurality of selective transmission type color filters having different specific wavelengths of transmitted light can be arranged in a plane. Further, by selectively arranging three selective transmission color filters whose specific wavelengths are the wavelengths of red, green, and blue light, respectively, in a fixed order, the multicolor metal filter is formed by additive color mixing. Tonal color display becomes possible.

Further, by selectively arranging three selective transmission color filters whose specific wavelengths are the wavelength regions of cyan, magenta, and yellow light, respectively, in a fixed order, it is possible to perform subtractive color mixing. Multi-color metal display is also possible. As the liquid crystal layer of the liquid crystal cell, any of a twisted nematic liquid crystal layer, a super twisted nematic liquid crystal layer, and a guest-host liquid crystal layer may be used. The color filter of the liquid crystal display panel may be provided on the viewing side of the absorption type polarizing plate, between the absorption type polarizing plate and the liquid crystal cell, or between the liquid crystal cell and the reflection type polarizing plate. Alternatively, the color filter may be provided between the liquid crystal layer and the transparent substrate constituting the liquid crystal cell.

In the liquid crystal display device according to the present invention, the incident light from the viewing side is linearly polarized by the absorbing polarizer, and the linearly polarized light is divided into the portion where the voltage is applied between the electrodes of the liquid crystal cell and the portion where the voltage is not applied. It becomes a twisted part and a non-twisted part when passing through the liquid crystal cell, and when it reaches the reflective polarizing plate, if it has linearly polarized light with a vibration plane parallel to its easy axis of transmission, it is transmitted. If the light is a linearly polarized light having a vibration plane orthogonal to the easy transmission axis, it is specularly reflected and returned to the viewing side.

In addition, since a color filter is provided in the path of the light, the light is colored. For this reason, the reflected portion becomes a brightly colored display state of metal tone or mirror tone, and the portion where the incident light has passed through the reflective polarizing plate is the underlying color (color of components inside the watch, light absorption). When a plate, a semi-transmissive plate, or the like is installed, the color becomes black, white, or any other color), so that various information can be brightly displayed in color depending on the contrast.

Therefore, it is possible to provide a liquid crystal display device for producing a timepiece or other electronic equipment having a design change. In addition, if a light scattering plate is provided on the viewing side of the absorption type polarizing plate, the specular reflection light by the reflection type polarizing plate is scattered, so that the display of the colorized metal tone or the mirror tone can be easily viewed with a soft color tone. At the same time, the viewing angle can be widened.

When a backlight is provided on the side opposite to the viewing side of the reflective polarizing plate, even in a dark environment such as at night, by turning on the backlight, half of the light incident on the reflective polarizing plate is transmitted therethrough. Then, the light becomes linearly polarized light and enters the liquid crystal cell. Depending on whether or not a voltage is applied between the electrodes of the liquid crystal cell, a portion where the linearly polarized light is twisted and a portion where the linearly polarized light is not twisted are formed. , Color information can be clearly displayed.

[0017]

Preferred embodiments of a liquid crystal display device according to the present invention will be described below with reference to the drawings. [First Embodiment] First, a first embodiment of a liquid crystal display panel which is a liquid crystal display device according to the present invention and a modification thereof will be described with reference to FIGS. These figures are
In each case, the thickness and interval of each component are greatly enlarged. FIG. 1 is a schematic cross-sectional view showing the configuration of the liquid crystal display panel 10, and FIG. 4 is a schematic cross-sectional view showing the configuration of the liquid crystal cell 12 with its intermediate portion cut away.

As shown in FIG. 1, this liquid crystal display panel 10
Is a liquid crystal cell 12, an absorption type polarizing plate 14 arranged on the viewing side (upper side in the figure), a reflection type polarizing plate 16 arranged on a side opposite to the viewing side of the liquid crystal cell 12 (lower side in the figure), It comprises a color filter 18 disposed between the absorption polarizer 14 and the liquid crystal cell 12. Liquid crystal cell 12
As shown in FIG. 4, a pair of substrates 1 and 2, each made of a transparent insulating material such as glass, are attached to each other by providing a sealing material 4 around them, and a liquid crystal layer 3 is sealed and sandwiched in the gap. . Opposing inner surfaces of the pair of substrates 1 and 2 are respectively provided with transparent electrodes 5 and 6 made of indium tin oxide (ITO) or the like.
Are formed, and at least one of the electrodes is formed in a pattern necessary for displaying time information and calendar information (in general, a seven-segment pattern when displaying numbers).

The liquid crystal layer 3 is made of a twisted nematic (TN) liquid crystal having a twist angle of 90 degrees. Then, on the side of each of the substrates 1 and 2 and the electrodes 5 and 6 in contact with the liquid crystal layer 3,
An alignment process is performed so that the liquid crystal molecules are aligned in a predetermined direction. The absorbing polarizer 14 disposed on the viewing side of the liquid crystal cell 12 transmits linearly polarized light having a vibration plane in a direction parallel to the easy transmission axis and absorbs linearly polarized light having a vibration plane in a direction perpendicular to the easy transmission axis. It is a sheet-like member to be formed.

The reflective polarizing plate 16 provided on the side opposite to the viewing side of the liquid crystal cell 12 transmits linearly polarized light having a vibration plane parallel to the easy transmission axis, and vibrates in a direction perpendicular to the easy transmission axis. Is a sheet-like member that reflects light. As the reflective polarizing plate 16, for example, an optical film DBEF (trade name) sold by Sumitomo 3M Limited is used.

The liquid crystal molecules are arranged so that the axis of easy transmission of the absorbing polarizer 14 and the major axis direction of the liquid crystal molecules on the viewing side in the liquid crystal layer 3 of the liquid crystal cell 12 are parallel. Further, the axis of easy transmission of the reflective polarizing plate 16 and the liquid crystal layer 3 of the liquid crystal cell 12
The liquid crystal molecules are arranged so as to be parallel to the long axis direction of the liquid crystal molecules on the side opposite to the viewing side in the above. Therefore, the absorption type polarizer 14
Is easily orthogonal to the easy transmission axis of the reflective polarizer 16.

The directions of the stripes in the absorption polarizer 14 and the reflection polarizer 16 in FIG. 1 indicate the directions of the axes of easy transmission, and the horizontal stripes in the absorption polarizer 14 are parallel to the paper. The vertical stripes in the reflective polarizing plate 16 indicate the direction perpendicular to the paper surface. Absorption polarizing plate 14 and liquid crystal cell 12
Is a selective transmission type color filter (also referred to as an absorption type filter) that transmits substantially only light of a specific wavelength and absorbs light of other wavelengths. Therefore, the light transmitted through the color filter is colored into a specific color.

As the selective transmission type color filter, for example, a pigment-dispersed coating film in which a pigment is dispersed and mixed in an organic resin is used. Since the pigment-dispersed coating film can be formed by a coating method or a printing method, a new component is not required, and one surface of an existing component (in the example shown in FIG. 1, opposite to the viewing side of the absorbing polarizer 14). Side or the outside surface of the substrate 1 on the viewing side of the liquid crystal cell 12). Light incident on the pigment-dispersed coating film transmits only light of a specific wavelength, and absorbs light of other wavelengths.

The color filter 18 is not limited to the position shown in FIG. 1, but may be placed anywhere on the viewing side of the reflective polarizing plate 16 constituting the liquid crystal display panel 10. Therefore, as shown in FIG.
4 may be disposed on the viewing side (outside), or may be disposed between the liquid crystal cell 12 and the reflective polarizer 16 as shown in FIG. Alternatively, as shown in FIG. 5 or FIG. 6, the liquid crystal cell 12 is a liquid crystal cell 12CF with a built-in color filter, and as shown in FIG. Reflective polarizing plate 1
The liquid crystal display panel 10 can also be configured by merely arranging 6.

In this case, as shown in FIG.
The color filter 18 may be formed by applying a pigment-dispersed coating film on the inner surface of the substrate 1 on the viewing side of the CF, or may be formed on the inner surface of the substrate 2 on the opposite side of the viewing side of the liquid crystal cell 12CF as shown in FIG. The color filter 18 may be formed by applying a pigment-dispersed coating film. Then, a transparent electrode 5 or 6 is formed on the surface of each color filter 18 in contact with the liquid crystal layer 3. However, the color filter 18 may be formed on the entire surface of the substrate 1 on which the electrode 5 is formed and in contact with the liquid crystal layer 3 or on the entire surface of the substrate 2 on which the electrode 6 is formed and in contact with the liquid crystal layer 3.

When a selective transmission type color filter is used as the color filter 18, a plurality of selective transmission type color filters having different specific wavelengths of transmitted light can be arranged in a plane. Furthermore, the specific wavelength is red,
By repeatedly arranging and selectively arranging three selective transmission color filters, which are the wavelengths of green and blue light, in a predetermined order, it is possible to display a multi-color metal tone color by additive color mixture.

For example, a liquid crystal cell 12C with a built-in color filter
F is configured as shown in FIG. 7, and on the inner surface of the transparent substrate 1,
A red pigment-dispersed coating film (R) having a specific wavelength of 600 nm to 700 nm as the color filter 18;
And a green pigment-dispersed coating film (G) having a specific wavelength of 400 to 500 nm and a blue pigment-dispersed coating film (B) having a specific wavelength of 400 to 500 nm are repeated in the order of R, G, and B. Line up in a row.

Then, an independent electrode element constituting the electrode 5 is formed on each of the pigment-dispersed coating films.
One pixel is constituted by the three color pigment-dispersed coating films R, G, and B, and ON / OFF of voltage application between the electrode element on each pigment-dispersed coated film and the other common electrode 6 is controlled. By doing so, additive color mixing can be achieved.

Although an example is shown in which the color filters 18 of the three color pigment-dispersed coating films R, G, and B are provided on the inner surface of the substrate 1 on the viewing side of the liquid crystal cell 12, the substrate 2 on the side opposite to the viewing side is provided. Of course, it may be provided on the inner surface. In that case, the electrode 6 formed thereon is formed as an electrode element corresponding to each of the pigment-dispersed coating films R, G, and B, and the electrode 5 on the substrate 1 side is formed.
Is formed as a common electrode.

On one of the outer surfaces of the substrates 1 and 2 (the surface opposite to the liquid crystal layer 3), a color filter 18 of the above-described three-color pigment-dispersed coating films R, G and B is formed. In the case where a plurality of pigment-dispersed coating films having different specific wavelengths are arranged in a plane, the thickness of the substrate 1 or the substrate 2 may cause subtractive color mixing of light incident obliquely, resulting in color purity. It is not so preferable because it lowers brightness.

The specific wavelength of the light transmitted through the color filter 18 is cyan (from 400 nm to 60 nm).
0 nm), magenta (400-500 nm and 600-700 nm), and yellow (500
3 colors (C, M, Y) in the wavelength range of
May be arranged repeatedly and regularly in a certain order. In this case, multi-color metal-tone color display by subtractive color mixture becomes possible.

Next, the principle of color display by the liquid crystal display panel 10 shown in FIG. 1 will be described with reference to FIGS. In these figures, the horizontal stripes in the absorption polarizer 14 and the vertical stripes in the reflection polarizer 16 have, as described with reference to FIG.
It shows that it is perpendicular to the paper surface, a long solid line with an arrow only at the tip shows a ray, a short solid line with an arrow at both ends shows the direction of the plane of oscillation of linearly polarized light after passing through each component, The horizontal direction is parallel to the paper surface, and the vertical direction is perpendicular to the paper surface.

The liquid crystal layer 3 of the liquid crystal cell 12 is made of TN liquid crystal having a twist angle of 90 degrees as described above. The color filter 18 is a selective transmission type color filter that transmits only yellow light and absorbs light other than yellow light. FIG. 9 shows a background portion where no voltage is applied between the electrodes 5 and 6 of the liquid crystal cell 12 (referred to as an OFF state). In this portion, the vibration plane of the linearly polarized light transmitted through the liquid crystal cell 12 Twist (phase modulation) is performed by 90 degrees by the twist function of FIG.

FIG. 10 shows a display portion such as a character in which a voltage is applied between the electrodes 5 and 6 of the liquid crystal cell 12 (referred to as an ON state). In this portion, the liquid crystal layer 3 of the liquid crystal cell 12 has liquid crystal molecules. And the twist function is lost, and the incident linearly polarized light is transmitted as it is without the direction of the vibration plane being twisted (phase modulated). Of the light incident on the liquid crystal display panel 10 from the viewing side (upper side in the figure), half is absorbed by the absorbing polarizer 14 and the other half is transmitted through the absorbing polarizer 14 in a direction parallel to the paper. The light enters the color filter 18 as linearly polarized light having a vibrating surface. However, all the light other than yellow is absorbed by the color filter 18 regardless of the state of the liquid crystal cell 12. The yellow light passes through the color filter 18 and enters the liquid crystal cell 12.

Then, the liquid crystal cell 12 is turned off as shown in FIG.
In the case of the state, the direction of the vibration plane of the yellow linearly polarized light is twisted by 90 degrees while transmitting through the liquid crystal cell 12, and enters the reflective polarizing plate 16 in a direction perpendicular to the paper surface. Therefore, the yellow linearly polarized light transmits through the reflective polarizing plate 16 because the direction of the vibrating surface is the same as the direction of the easy transmission axis of the reflective polarizing plate 16, and is viewed from the viewing side as a base (mounted on a watch). If it is present, the color of the parts inside it will look dark.

On the other hand, when the liquid crystal cell 12 is in the ON state shown in FIG. 10, the yellow linearly polarized light passes through the liquid crystal cell 12 without being twisted, and the direction of the vibration plane remains parallel to the paper. The light enters the reflective polarizing plate 16. Therefore,
The direction of the vibration plane of the yellow linearly polarized light is
6 because it is orthogonal to the direction of the easy transmission axis,
6 is specularly reflected. Since the reflected light is emitted to the viewing side through a path reverse to that at the time of incidence, it looks bright in a yellow metallic tone. It looks like putting a yellow filter on a mirror.

Therefore, if a voltage is applied between the electrodes of the liquid crystal cell 12 only for the characters for displaying information, the characters are displayed brightly in a yellow metallic tone (close to gold) in a dark background through which the inside can be seen. Will be. As described above, in the liquid crystal display device according to the present invention, almost all of the colorized light that enters the liquid crystal display panel 10 and is reflected is reflected in the area of characters and the like for displaying information. The key can be displayed.

On the other hand, in the background area for displaying information, the light incident on the liquid crystal display panel 10 is reflected by the reflective polarizing plate 1.
6, the light passes through the reflective polarizing plate 16 on the side opposite to the viewing side. As a result, as a whole, the characters and the like are displayed in a colorized metal tone. If the easy axis of the reflective polarizer 16 and the long axis of the liquid crystal molecules on the side opposite to the viewing side of the liquid crystal layer 3 are arranged orthogonal to each other, the easy axis of the absorptive polarizer 14 and the reflective polarizer are arranged. Since the axis of easy permeation of the plate 16 is parallel,
The display state is inverted from that of the above example, and characters and the like can be displayed in a yellow metallic background in a state where the inside can be seen through.

If a color filter 18 having a different transmission color is used, an arbitrary metallic display color or background color can be obtained. Therefore, according to the present invention, it is possible to provide a liquid crystal display device that can be changed in a variety of designs and has an interesting taste as compared with a conventional liquid crystal display device that displays various information in a black display on a white background. can do. In addition, such a liquid crystal display panel is a liquid crystal display panel of a dot matrix display so that arbitrary characters and figures can be displayed, or electrodes of a liquid crystal cell are formed in various figure patterns to selectively display required figures. It is also possible to make it possible to display the information.

As shown in FIG. 2, FIG. 3, and FIG. 5 to FIG. 8, even in a liquid crystal display panel in which the color filters 18 are respectively located at different positions, light incident on the liquid crystal display panel is converted into a color by the color filters 18. The color display function described above is the same except for the position where the color display is performed. As shown in FIG. 7, when the color filter 18 is configured so that one pixel is composed of the three color pigment-dispersed coating films R, G, and B, three colors of red, green, and blue are provided for each pixel. Can be displayed by specularly reflected light obtained by additively mixing the light of any one of the above, and a color display of arbitrary characters and figures can be performed in a multi-color metallic tone.

The example in which the liquid crystal layer 3 sealed in the liquid crystal cell 12 is a twisted nematic (TN) liquid crystal having a twist angle of 90 degrees has been described, but a TN liquid crystal having a twist angle of less than 90 degrees or a twist angle of 180 degrees is used. Super to 270 degrees
It is also possible to use a twisted nematic (STN) liquid crystal, a guest-host liquid crystal, or the like. When a super twisted nematic liquid crystal is used, the sharpness of the liquid crystal layer 3 can be improved, and the contrast can be increased.

When the liquid crystal layer 3 has a function of phase-modulating the linearly polarized light transmitted therethrough and twisting the direction of the vibrating plane, the absorption type polarizing plate 14 and the reflective type polarizing plate 16 disposed on both sides of the liquid crystal cell 12 are provided. Are arranged so as to be parallel to each other or to intersect at the same angle as the twist angle thereof (orthogonal if the twist angle is 90 degrees). The guest-host liquid crystal is a solute in the liquid crystal as a solvent.
It is a mixed liquid crystal in which a coloring dye is dissolved. When the orientation state of the liquid crystal molecules is changed by the electric field, the orientation of the dichroic dye can be controlled according to the movement of the liquid crystal molecules, and the display can be performed by modulating the absorption of light incident from a certain direction.

By enclosing the guest-host liquid crystal in the liquid crystal cell 12 of the liquid crystal display panel 10, the area for displaying information such as characters is displayed in a colorized metal tone display state.
The background can also be colored. Here, by selecting the specific wavelength transmitted through the color filter 18 and the absorption wavelength of the dichroic dye dissolved in the guest-host liquid crystal, respectively, the combination of the color of the area for displaying characters and the like and the background area is selected. Can be configured freely.

In the above description, an example in which a selective transmission type color filter is used as the color filter 18 has been described, but a dielectric multilayer film may be used. The dielectric multilayer film is formed by laminating a plurality of dielectric materials having different refractive indices, and reflects light of a specific wavelength among incident light and transmits light of other wavelengths. Therefore, when the color filter 18 made of a dielectric multilayer film is arranged on the viewing side of the absorption type polarizing plate 14, only light of a specific wavelength out of the light incident on the liquid crystal display panel is reflected by the color filter 18 of the dielectric multilayer film. Light other than the specific wavelength enters the absorption type polarizing plate 14. Linearly polarized light parallel to the easy transmission axis of the absorption polarizer 14 enters the liquid crystal cell 12.

Then, in the background portion of the display, the linearly polarized light other than the specific wavelength is phase-modulated by 90 degrees in the liquid crystal cell 12, and
The light also passes through the reflective polarizing plate 16. On the other hand, since a voltage is applied between the electrodes of the liquid crystal cell 12 in the display portion for characters and the like, linearly polarized light of light other than a specific wavelength passes through the liquid crystal cell 12 without being phase-modulated, and is reflected by the reflective polarizing plate 16 into a mirror surface. It is reflected and returned to the viewing side. Therefore, in the area for displaying information such as characters, almost all of the incident light is reflected, resulting in a bright metal tone display. On the other hand, in the background portion of the display, only the light of a specific wavelength is reflected by the color filter 18 of the dielectric multilayer film, so that the background is colored, and a bright metal tone display can be performed therein.

In the case where a dielectric multilayer film is used,
There is almost no light loss. The specific wavelength to be reflected is
It can be set freely by changing the combination of the refractive indexes of the dielectric layers. Further, the color filter 18
Although a color polarizing plate can be used as an example, an embodiment thereof will be described later in detail. In addition, a reflective color filter that transmits only light of a specific wavelength and reflects light of other wavelengths, a fluorescent filter having a function of performing wavelength conversion of incident light, and the like can be used.

[Second Embodiment] Next, a second embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 11 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device. The same reference numerals are given to the same portions as those in FIGS. 1 to 10, and the description thereof is omitted. I do.

In the configuration of this liquid crystal display panel, FIG.
The only difference from the above is that the light absorbing plate 13 is disposed on the opposite side (the lower side in the figure) of the reflective polarizing plate 16 from the viewing side. As the light absorption plate 13, a black light absorption film, an absorption type polarizing plate, an absorption type color filter, or the like is used. When an absorption-type polarizing plate is used, the absorption-type polarizing plate is arranged so that its easy-to-transmit axis is orthogonal to the easy-to-transmit axis of the reflective polarizing plate 16.

When the light absorbing plate 13 is disposed on the side opposite to the viewing side of the reflective polarizing plate 16, the light transmitted through the reflective polarizing plate 16 can be absorbed by the light absorbing plate 13 to display information. The background portion can be in a black or dark display state, in which characters and the like can be clearly displayed in a metalized color tone. Therefore, the display contrast is improved. Also in the case of performing the reverse display, various information such as time information and calendar information can be displayed in black or near-color characters with good contrast in a bright metal tone background. For other functions and application of various modifications,
The description is omitted because it is the same as that of the first embodiment.

[Third Embodiment] Next, a third embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 12 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device, and the same parts as those in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted. I do.

In the structure of this liquid crystal display panel, FIG.
The only difference from the above is that the light scattering plate 15 is disposed on the viewing side (the upper side in the figure) of the absorption type polarizing plate 14. The light scattering plate 15 is formed by applying a mixture of silica particles, acrylic beads, and calcium powder, which are silicon oxides, in an adhesive on a film-like substrate.

When the light scattering plate 15 is provided on the viewing side of the absorption type polarizing plate 14, the light which is specularly reflected from the reflection type polarizing plate 16 and emitted to the viewing side can be irregularly reflected by the light scattering plate 15. . As a result, a colorized strong metal tone for displaying time information, calendar information and the like can be made softer to make it easier to see, and the viewing angle can be increased.

The example in which the light scattering plate 15 is arranged on the viewing side of the absorption type polarizing plate 14 has been described. However, between the absorption type polarizing plate 14 and the liquid crystal cell 12 or between the liquid crystal cell 12 and the reflection type polarizing plate 16. The light scattering plate 15 may be provided. Other functions and application of various modifications are the same as those in the first embodiment, and a description thereof will not be repeated.

[Fourth Embodiment] Next, a fourth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 13 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device, and the same parts as those in FIGS. 1 to 12 are denoted by the same reference numerals, and description thereof is omitted. I do.

In the structure of this liquid crystal display panel, FIG.
The difference from the above is that the light absorbing plate 13 is provided on the opposite side of the reflective polarizing plate 16 from the viewing side, and the absorbing polarizing plate 14 is provided.
The only difference is that the light-scattering plate 15 is provided on the viewing side. This configuration corresponds to the light absorbing plate 13 of the liquid crystal display panel shown in FIG.
And the light scattering plate 15 of the liquid crystal display panel shown in FIG. 12 is provided, and both actions and effects can be obtained.

That is, the contrast between the background portion for displaying information and the character portion can be enhanced, and the colorized metal tone of the display can be made softer to make it easier to see and the viewing angle can be increased. Other functions and application of various modifications are the same as those in the first embodiment, and a description thereof will not be repeated.

[Fifth Embodiment] Next, a fifth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 14 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device. The same reference numerals are given to the same portions as those in FIGS. 1 to 10, and description thereof is omitted. I do.

In the configuration of this liquid crystal display panel, FIG.
The only difference from the above is that a backlight 17 is provided on the opposite side (the lower side in the figure) of the reflective polarizing plate 16 from the viewing side. The backlight 17 uses a light source such as an electroluminescent device, a light emitting diode (LED) array, or a cold cathode tube or a hot cathode tube.

The backlight 17 is connected to the reflective polarizing plate 16.
When the light is disposed on the side opposite to the viewing side of the light, half of the light incident on the reflective polarizing plate 16 from the backlight 17 is transmitted, becomes linearly polarized light, and enters the liquid crystal cell 12. In a background portion for displaying time information, calendar information, and the like, the linearly polarized light is phase-modulated by 90 degrees when transmitting through the liquid crystal cell 12, and the color filter 18 is colored by transmitting only light of a specific wavelength. The light passes through the absorption polarizer 14 and exits to the viewing side.

Since a voltage is applied between the electrodes of the liquid crystal cell 12 in a portion such as characters for displaying various information such as time information and calendar information, the linearly polarized light due to the backlight incident on the liquid crystal cell 12 is Since the light is transmitted without being phase-modulated by the layer 3, its vibration plane is orthogonal to the axis of easy transmission of the absorption polarizer 14 and is absorbed by the absorption polarizer 14.

Therefore, even in a dark place where there is little or no external light, by turning on the backlight 17, various kinds of information such as time information and calendar information in black or dark colors can be provided in a bright background portion by the colored transmitted light. Can be displayed. For other functions and application of various modifications,
The description is omitted because it is the same as that of the first embodiment.

[Sixth Embodiment] Next, a sixth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 15 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device. The same reference numerals are given to the same portions as in FIGS. 1 to 14, and the description thereof is omitted. I do. In the configuration of this liquid crystal display panel,
The difference from the one shown in FIG.
The only difference is that a semi-transmissive plate 19 is provided between the backlight and the backlight 17.

In this example, an absorption-type polarizing plate is employed as the semi-transmissive plate 19, and the axis of easy transmission is provided by the reflective-type polarizing plate 16.
Were arranged so that the angle formed by the easy transmission axis was 75 degrees.
The semi-transmissive plate 1 between the reflective polarizing plate 16 and the backlight 24
9, when the backlight 17 is not turned on, half of the light transmitted through the reflective polarizing plate 16 is transmitted to the semi-transmitting plate 1.
9, the display of the background part is darkened, and the contrast of the information display can be increased.

On the other hand, when the backlight 17 is turned on due to a small amount of external light, the background portion can be brightened by the light transmitted through the semi-transmissive plate 19, and the characters and the like for displaying information are displayed in black and dark. can do. Therefore,
Regardless of whether the backlight 17 is turned on or off, the display contrast can be increased. Other functions and application of various modified examples are the same as those of the first embodiment and the fifth embodiment, and thus description thereof will be omitted.

[Seventh Embodiment] Next, a seventh embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 16 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel as the liquid crystal display device. The same parts as those in FIGS. 1 to 14 are denoted by the same reference numerals, and description thereof is omitted. I do. In the configuration of this liquid crystal display panel,
The difference from the one shown in FIG.
The only difference is that the light-scattering plate 15 is provided on the viewing side.

When the light scattering plate 15 is provided on the viewing side of the absorption type polarizing plate 14, light which is specularly reflected by the absorption type polarizing plate 14 and emitted to the viewing side can be irregularly reflected by the light scattering plate 15. In addition, it is possible to make the color of the metal such as characters for displaying information a soft color to make it easier to see and to widen the viewing angle. Other functions and application of various modified examples are the same as those of the first embodiment and the fifth embodiment, and thus description thereof will be omitted.

[Eighth Embodiment] Next, an eighth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIG. FIG. 17 is a schematic cross-sectional view showing the structure of a liquid crystal display panel as the liquid crystal display device. The same reference numerals are given to the same parts as in FIGS. 1 to 16, and the description thereof is omitted. I do. In the configuration of this liquid crystal display panel,
The difference from the one shown in FIG.
The only difference is that the light-scattering plate 15 is provided on the viewing side.

When the light scattering plate 15 is provided on the viewing side of the absorption type polarizing plate 14, light which is specularly reflected by the absorption type polarizing plate 14 and emitted to the viewing side can be irregularly reflected by the light scattering plate 15. In addition, it is possible to make the color of the metal such as characters for displaying information a soft color to make it easier to see and to widen the viewing angle. Other functions and application of various modified examples are the same as those in the first embodiment and the sixth embodiment, and thus description thereof will be omitted.

[Ninth Embodiment] Next, a ninth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIGS.
It will be explained by. FIGS. 18 and 19 are schematic cross-sectional views for describing the configuration of a liquid crystal display panel as the liquid crystal display device and the principle of color display.
11 are denoted by the same reference numerals, and description thereof will be omitted. The direction of the stripe in each polarizing plate in FIGS. 18 and 19 and the meaning of the solid line with each arrow are also shown in FIG.
And FIG. 10.

In the structure of this liquid crystal display panel, FIG.
1 is different from that shown in FIG. 1 only in that a color polarizer 28 is provided between the absorption polarizer 14 and the liquid crystal cell 12 instead of the selective transmission type color filter 18. is there. The color polarizing plate 28 transmits only light of a specific wavelength and absorbs light of other wavelengths among linearly polarized light having a vibration plane orthogonal to the easy transmission axis. The linearly polarized light having a vibration plane parallel to the easy transmission axis has a property of transmitting both light having the specific wavelength and light having the other wavelength.

Here, the color polarizing plate 28 is arranged so that its easy transmission axis is orthogonal to the easy transmission axis of the absorption type polarizing plate 14. In this embodiment, the absorption polarizer 14, the color polarizer 28, and the liquid crystal cell 12 are arranged in this order. Therefore, since the light transmitted through the absorption polarizer 14 is linearly polarized light having a vibration plane orthogonal to the easy transmission axis of the color polarizer 28, only light of a specific wavelength transmits through the color polarizer 28. Light of other wavelengths transmitted through the absorption polarizer 14 is
Absorbed at 8. In the illustrated example, the specific wavelength is the wavelength of yellow light.

FIG. 18 shows the path of light other than yellow light among the light incident on the liquid crystal display panel from the viewing side.
9 indicates a yellow light path. The left half of these figures shows an OFF state where no voltage is applied between the electrodes of the liquid crystal cell 12, and the right half shows an ON state where a voltage is applied between the electrodes of the liquid crystal cell 12, respectively. . As shown in FIG. 18, the non-yellow light incident on the liquid crystal display panel from the viewer side passes through the absorption polarizer 14 and becomes linearly polarized light having a vibration plane parallel to the easy axis of transmission (parallel to the paper). Is incident on the color polarizer 28, but the direction of the vibrating surface thereof is
Since it is orthogonal to the direction of the easy transmission axis 8, all the light is absorbed by the color polarizer 28.

Therefore, the liquid crystal cell 12 is turned on and off.
It does not contribute to the display regardless of the state. As shown in FIG. 19, the yellow light that has entered the liquid crystal display panel from the viewing side is transmitted through the absorption polarizer 14 and becomes linearly polarized light having a vibration plane parallel to the axis of easy transmission. The incident light is the same as the light other than yellow light. However, yellow linearly polarized light can pass through the color polarizer 28 even if the direction of the vibration plane is perpendicular to the direction of the easy transmission axis of the color polarizer 28. Incident on the liquid crystal cell 12 as it is.

In the background portion where the liquid crystal cell 12 is in the OFF state, the yellow linearly polarized light incident on the liquid crystal cell 12 is phase-modulated by 90 degrees when passing through the liquid crystal cell 12, and the direction of the vibration plane is reflected. Since the direction is parallel to the axis of easy transmission of the mold polarizing plate 16 (perpendicular to the plane of the paper), the light is transmitted therethrough and absorbed by the light absorbing plate 13 disposed on the rear side. Therefore, from the viewing side, it looks black or dark.

On the other hand, in the display section for characters and the like in which the liquid crystal cell 12 is turned on, the yellow linearly polarized light incident on the liquid crystal cell 12 passes through the liquid crystal cell 12 without being phase-modulated and is reflected by the reflection type polarizing plate. Light is incident on the light source 16. Therefore, the yellow linearly polarized light is mirror-reflected by the reflective polarizing plate 16 and exits to the viewing side through the reverse path, since the direction of the vibrating surface is perpendicular to the easy axis of transmission of the reflective polarizing plate 16. . Therefore, in the area such as characters for displaying information,
Almost all of the yellow light that has entered the liquid crystal cell 12 is reflected, and is displayed in a brightly colored (yellow) metal tone in a black or dark background portion.

For this reason, even when this liquid crystal display panel is used as a display device of an electronic device, it has a more design-related effect than a conventional electronic device that displays various information such as time information and calendar information in black on a white background. It can be changed and has an interesting taste. By selecting a specific wavelength that passes through the color polarizing plate 28, that is, a color of light, a metal tone display can be performed in various different colors.

[Tenth Embodiment] Next, a tenth embodiment of the liquid crystal display device according to the present invention will be described with reference to FIGS. 20 and 21 are schematic cross-sectional views for explaining the configuration of a liquid crystal display panel as the liquid crystal display device and the principle of color display.
1 to 11 are denoted by the same reference numerals, and description thereof will be omitted. The direction of the stripes in each polarizing plate in FIGS. 20 and 21 and the meaning of the solid line with each arrow are also the same as those described with reference to FIGS. 9 and 10.

In the configuration of the liquid crystal display panel, FIG.
8 and FIG. 19 only in that a color polarizing plate 28 as a color filter is disposed between the liquid crystal cell 12 and the reflective polarizing plate 16. This color polarizing plate 28
Also, among linearly polarized light having a vibration plane orthogonal to the easy transmission axis, only light of a specific wavelength (yellow in this example) is transmitted, and light of other wavelengths (light other than yellow) is absorbed.

As shown in FIGS. 20 and 21, all light incident on the liquid crystal display panel from the viewer's side passes through the absorbing polarizer 14 and is vibrated parallel to the axis of easy transmission (parallel to the paper). And enters the liquid crystal cell 12 as linearly polarized light having When the light passes through the liquid crystal cell 12, the liquid crystal cell 12 is phase-modulated by 90 degrees in the left half of the OFF state, and the direction of the vibrating surface is linearly polarized in a direction parallel to the easy transmission axis of the color polarizer 28. And enters the color polarizing plate 28.

Therefore, in the background portion where the liquid crystal cell 12 is in the OFF state, both the non-yellow light and the yellow light pass through the color polarizing plate 28 as shown in FIGS. The reflection type polarizing plate 16 arranged in parallel with the easy transmission axis of the plate 28 is also transmitted and absorbed by the light absorbing plate 13. In a display area for characters and the like in which the liquid crystal cell 12 is ON,
Light other than yellow is absorbed by the color polarizer 28 as shown in FIG. The yellow light passes through the color polarizer and enters the reflective polarizer 16, but the direction of the vibrating surface is orthogonal to the axis of easy transmission of the reflective polarizer 16.
The light is specularly reflected by 6 and exits to the viewing side through a reverse path. Therefore, almost all of the colorized light that enters the liquid crystal cell 12 is reflected and emitted to the viewer side.

Accordingly, this liquid crystal display panel can also display various information such as time information and calendar information in a black or dark background in a brightly colored metal tone. Therefore, if this liquid crystal display panel is used as a display device of an electronic device, it can be changed in design compared with a conventional electronic device that displays various information such as time information and calendar information in a black display on a white background. Yes, it also has some interesting taste. By selecting a specific wavelength that passes through the color polarizing plate 28, that is, a color of light, a metal tone display can be performed in various different colors.

In the ninth and tenth configuration examples described above, similarly to the color filter 18 described in the first configuration example, the color polarizing plate 28 is connected to the viewing side of the absorption type polarizing plate 14 or the liquid crystal. It may be provided on the inner surface side of any of the substrates in the cell 12. Further, various modifications other than the color filter 18 described in the first configuration example can be similarly applied to the ninth and tenth configuration examples described above.

[0083]

As is apparent from the above description, the liquid crystal display device according to the present invention displays various kinds of information in a bright metallic color tone in a dark background, and vice versa. Can be displayed in a black or dark color within a metallic background that has been colored into a color, and the display color can be arbitrarily selected. Therefore, when this liquid crystal display device (liquid crystal display panel) is used as a display panel of various electronic devices, it is compared with a conventional timepiece and other electronic devices that display various information such as time information and calendar information in black on a white background. Therefore, various changes can be made in terms of design, and it is possible to have an interesting taste.

Further, the present invention can be applied to a liquid crystal display device with a backlight which can be used even in a dark environment with little or no external light. Furthermore, the present invention is not limited to a liquid crystal display device that digitally displays time information, calendar information, numerical information, and the like with numerals, and the above-mentioned liquid crystal display panel can be a dot matrix liquid crystal display panel so that any character or figure can be displayed. Alternatively, the present invention can be applied to a liquid crystal display device in which electrodes of a liquid crystal cell are formed in a large number of graphic patterns so that various patterns can be selectively displayed.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing the configuration of a first embodiment of a liquid crystal display device according to the present invention.

FIG. 2 is a schematic cross-sectional view showing a modification of the first embodiment of the liquid crystal display device according to the present invention.

FIG. 3 is a schematic cross-sectional view showing another modified example of the first embodiment of the liquid crystal display device according to the present invention.

FIG. 4 is a schematic cross-sectional view showing a configuration of the liquid crystal cell in FIG. 1 with an intermediate portion cut away.

FIG. 5 is a sectional view similar to FIG. 4, showing a different example of a liquid crystal cell provided with a color filter.

FIG. 6 is a sectional view similar to FIG. 4, showing still another example of a liquid crystal cell provided with a color filter.

FIG. 7 is a sectional view similar to FIG. 4, showing still another example of a liquid crystal cell provided with a color filter.

FIG. 8 is a schematic cross-sectional view showing a configuration of a liquid crystal display device using the liquid crystal cell shown in any of FIGS.

9 is an explanatory diagram for explaining the principle of color display by the liquid crystal display device shown in FIG.

10 is an explanatory diagram for explaining the principle of color display by the liquid crystal display device shown in FIG.

FIG. 11 is a schematic sectional view showing a configuration of a second embodiment of the liquid crystal display device according to the present invention.

FIG. 12 is a schematic sectional view showing the configuration of a third embodiment of the liquid crystal display device according to the present invention.

FIG. 13 is a schematic sectional view showing the configuration of a fourth embodiment of the liquid crystal display device according to the present invention.

FIG. 14 is a schematic sectional view showing the configuration of a fifth embodiment of the liquid crystal display device according to the present invention.

FIG. 15 is a schematic sectional view showing the configuration of a sixth embodiment of the liquid crystal display device according to the present invention.

FIG. 16 is a schematic sectional view showing a configuration of a seventh embodiment of the liquid crystal display device according to the present invention.

FIG. 17 is a schematic sectional view showing the configuration of an eighth embodiment of the liquid crystal display device according to the present invention.

FIG. 18 is an explanatory diagram for explaining the configuration of a ninth embodiment of a liquid crystal display device according to the present invention and the principle of color display thereby.

FIG. 19 is an explanatory diagram for explaining the configuration of a ninth embodiment of a liquid crystal display device according to the present invention and the principle of color display thereby.

FIG. 20 is an explanatory diagram for explaining the configuration of a tenth embodiment of the liquid crystal display device according to the present invention and the principle of color display thereby.

FIG. 21 is an explanatory diagram for explaining the configuration of a tenth embodiment of the liquid crystal display device according to the present invention and the principle of color display thereby.

[Explanation of symbols]

 1, 2: substrate 3: liquid crystal layer 5, 6: electrode 10: liquid crystal display panel 12, 12CF: liquid crystal cell 13: light absorbing plate 14: absorption type polarizing plate 15: light scattering plate 16: reflection type polarizing plate 17: back Light 18: Color filter 28: Color polarizing plate

Claims (18)

[Claims] 1. A liquid crystal cell in which a liquid crystal layer is sealed between a pair of transparent substrates each having an electrode on an opposing inner surface, and a vibrating surface disposed on the viewing side of the liquid crystal cell in a direction parallel to the easy transmission axis. An absorption-type polarizing plate that transmits linearly polarized light having a vibration plane in a direction perpendicular to the easy transmission axis and absorbs the linearly polarized light, and is disposed on the opposite side of the viewing side of the liquid crystal cell and is parallel to the easy transmission axis. A reflective polarizing plate that transmits linear polarized light having an oscillating surface in the direction and reflects linear polarized light having an oscillating surface in a direction perpendicular to the easy transmission axis; and a viewing side of the absorbing polarizing plate or the absorbing polarizing plate. And a color filter disposed between the reflection type polarizing plate and the reflection type polarizing plate. 2. The liquid crystal display device according to claim 1, wherein a light absorbing plate is provided on a side of the reflective polarizing plate opposite to a viewing side. 3. The liquid crystal display device according to claim 1, wherein a light scattering plate is provided on the viewing side of the absorption type polarizing plate. 4. The liquid crystal display device according to claim 1, wherein a light scattering plate is provided on a viewing side of the absorption type polarizing plate, and a light absorption plate is provided on a side opposite to the viewing side of the reflection type polarizing plate. A liquid crystal display device characterized in that: 5. The liquid crystal display device according to claim 1, wherein a backlight is provided on a side of the reflective polarizing plate opposite to a viewing side. 6. The liquid crystal display device according to claim 1, wherein a light scattering plate is provided on a viewing side of the absorption type polarizing plate, and a backlight is provided on a side opposite to the viewing side of the reflection type polarizing plate. A liquid crystal display device characterized by the above-mentioned. 7. The liquid crystal display device according to claim 1, wherein an easy transmission axis of an absorption polarizer disposed on a viewing side of the liquid crystal cell and a viewing angle in a liquid crystal layer of the liquid crystal cell. The long axis direction of the liquid crystal molecules on the side is made parallel, and the axis of easy transmission of the reflective polarizing plate and the long axis direction of the liquid crystal molecules on the side opposite to the viewing side in the liquid crystal layer of the liquid crystal cell are parallel or orthogonal. Liquid crystal display device. 8. The liquid crystal display device according to claim 1, wherein an easy transmission axis of an absorption type polarizing plate arranged on a viewing side of the liquid crystal cell and a viewing angle in a liquid crystal layer of the liquid crystal cell. The long axis direction of the liquid crystal molecules on the side is orthogonal to the axis of easy transmission of the reflective polarizing plate, and the long axis direction of the liquid crystal molecules on the side opposite to the viewing side in the liquid crystal layer of the liquid crystal cell is parallel or orthogonal. Liquid crystal display device. 9. The liquid crystal display device according to claim 1, wherein the color filter is a selective transmission color filter that transmits only light of a specific wavelength. 10. The liquid crystal display device according to claim 9, wherein the color filters include a plurality of color filters having different specific wavelengths arranged in a plane. 11. The liquid crystal display device according to claim 9, wherein the color filters are formed by repeating three color filters whose specific wavelengths are red, green, and blue light wavelengths in a predetermined order. Liquid crystal display devices arranged in a row. 12. The liquid crystal display device according to claim 9, wherein the color filters are arranged such that three color filters whose specific wavelengths are the wavelengths of cyan, magenta, and yellow light are repeated in a predetermined order. Liquid crystal display devices arranged in a row. 13. The liquid crystal display device according to claim 1, wherein the color filter transmits linearly polarized light having a vibration plane orthogonal to an easy transmission axis and transmits only light of a specific wavelength. A liquid crystal display device that is a color polarizer that absorbs light of other wavelengths and transmits all linearly polarized light having a vibration plane parallel to the easy transmission axis. 14. The liquid crystal display device according to claim 1, wherein the color filter reflects light of a specific wavelength among incident light and transmits light of other wavelengths. Liquid crystal display device which is a body multilayer film. 15. The liquid crystal layer of the liquid crystal cell is made of one of a twisted nematic liquid crystal, a super twisted nematic liquid crystal, and a guest-host liquid crystal.
5. The liquid crystal display device according to any one of 4. 16. The liquid crystal display device according to claim 1, wherein the color filter is provided between the absorption polarizer and the liquid crystal cell. 17. The liquid crystal display device according to claim 1, wherein the color filter is provided between the liquid crystal cell and the reflective polarizing plate. 18. The liquid crystal display device according to claim 1, wherein the liquid crystal color filter is provided between the liquid crystal layer and the transparent substrate constituting the liquid crystal cell.