JP2000111940A - Liquid crystal display device and electronic apparatus including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to change colors without allowing display images form turning to pale color or dark color and without being limited in coloration forming regions by providing a second liquid crystal display panel layer with a second liquid crystal cell, coloring layer and second polarizing layer. SOLUTION: The first liquid crystal display panel 10 includes the first liquid crystal cell 14 formed by sealing liquid crystals between the first polarizing layer 12 and a pair of first substrates 15 and 15 which are disposed on the back surface thereof and are provided with first electrodes and a reflection polarizer 20 constituting a reflection polarizing layer which is disposed on the back surface thereof and reflects the polarized light having a first plane of polarization and is transmissive to the polarized light having the second plane of polarization. The second liquid crystal display panel 30 includes the second liquid crystal cell 34 formed by sealing the liquid crystals between a pair of the second substrates 35 and 35 which are disposed on the back surface of the reflection polarizer 20 and are provided with the second electrodes, the coloring layer 38 which is disposed on the back surface thereof and colors and displays the display screen, the second polarizing layer 40 disposed on the back surface and a reflection layer 50 disposed on the back surface thereof. The respective liquid crystal display panels 10 and 30 are subjected to on and off control.

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 and an electronic device including the same.

[0002]

2. Description of the Related Art Conventional TN (Twisted Nematic) liquid crystal and STN (Super-Twist)
ed Nematic) In a reflection type liquid crystal display device such as a liquid crystal, a structure in which a liquid crystal cell is sandwiched between two polarizing plates has been adopted.

[0003] Using such a normal liquid crystal display device,
When the color of the display image on the display screen is partially changed, there has been a problem that the display image has a light color or a dark color. Further, the light use efficiency is poor, and the display is dark in an environment with strong external light.

Further, in such a liquid crystal display device, a color layer is formed on the outside of two transparent substrates, for example, in order to partially change the display color, and the color layer differs depending on the display area. Attempts have been made to form colored layers.

However, in such a case, the region for displaying in a plurality of colors is limited to the colored layer forming region, and it is difficult to change the colored display position.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned technical problems, and has as its object the following.
When partially changing the color of the display image on the display screen,
It is an object of the present invention to provide a liquid crystal display device capable of changing a color without being limited to a colored layer forming region while preventing a display image from being displayed in a light color or a dark color, and an electronic device including the same. .

[0007]

(1) A liquid crystal display device of the present invention comprises a first liquid crystal display panel layer and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. When,
Wherein the first liquid crystal display panel layer is between a first polarizing layer and a pair of first substrates provided on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side, respectively. A first liquid crystal cell formed by enclosing liquid crystal therein, and a second polarization surface that is disposed on the back surface of the first liquid crystal cell and reflects polarized light having a first polarization surface and is different from the first polarization surface. The second liquid crystal display panel layer is formed by sealing a liquid crystal between a pair of second substrates provided with second electrodes on the inner surface side, respectively. A second liquid crystal cell, a colored layer disposed on the back side of the second liquid crystal cell,
And a second polarizing layer disposed on the back side of the coloring layer.

According to the present invention, the optical axis of the liquid crystal cell is usually changed by each of the ON and OFF modes of the electrode. Therefore, incident light that is incident from the first liquid crystal display panel toward the second liquid crystal display panel is not rotated when the first liquid crystal cell is on, but is rotated when the first liquid crystal cell is off. Similarly, the incident light is not rotated when the second liquid crystal cell is on, but is rotated when the second liquid crystal cell is off.

For this reason, the light incident on the first liquid crystal display panel is transmitted through the first polarizing layer, and is rotated in accordance with the voltage applied to the first liquid crystal cell when passing through the first liquid crystal cell. To reach the reflective polarizing layer. Since this reflective polarizing layer has a property of reflecting polarized light having a first polarizing plane and transmitting polarized light having a second polarizing plane substantially orthogonal to the first polarizing plane, incident polarized light is The light is reflected or transmitted by the reflective polarizing layer according to the degree of optical rotation accompanying the transmission of the first liquid crystal cell. The light reflected by the reflective polarizing layer follows the previous path in reverse, and is emitted from the first liquid crystal display panel. Therefore, the first
When the liquid crystal display panel is off, the liquid crystal display panel is reflected by the reflective polarizing layer and emits, for example, white (first color) light.

Next, the polarized light transmitted through the reflective polarizing layer is converted into the second polarized light.
Follow different paths according to the voltage applied to the second liquid crystal cell of the liquid crystal display panel. Here, the second polarizing layer is set so as to transmit only polarized light having the first polarizing plane.

Then, in a region where a voltage is applied to the first liquid crystal cell (on state) and no voltage is applied to the second liquid crystal cell (off state), the light transmitted through the reflective polarizing layer is Polarized light that is rotated and transmitted by the second liquid crystal cell, reflected by the coloring layer and colored is emitted from the first liquid crystal display panel by following the previous path in reverse. Therefore, when the first liquid crystal display panel is on,
When the liquid crystal display panel is off, light passing through the colored layer is reflected by the reflective layer, and light of the color of the colored layer (second color) is emitted.

On the other hand, when a voltage is applied to both the first and second liquid crystal cells (on state), the light transmitted through the reflective polarizing layer is transmitted without being rotated by the second liquid crystal cell, Since the light is absorbed by the polarizing layer, the display screen displays black (third color).

As described above, by controlling on / off of the first and second liquid crystal display panels, at least three types of display areas of white, black, and color (color of the colored layer) can be formed.

Thus, in the area where the off-state light of the first liquid crystal cell is reflected by the reflective polarizing layer, a display image of the first color is displayed, and the on-state light of the first liquid crystal cell is reflected by the reflective polarizing layer. In the region where the second liquid crystal cell is turned off and the second liquid crystal cell is turned off, a display image of the second color is displayed, the light in the on state of the first liquid crystal cell is transmitted through the reflective polarizing layer, and the second liquid crystal cell is turned on. In the state region, a display image of the third color is displayed.

Therefore, there is no need to provide, for example, a black colored region and a white colored region in the colored layer, and a display in which the color can be locally changed while preventing a light-colored image from occurring is provided. And realize a display image which is easy to see. In addition, since the display area of the color display is a display of the form of the colored layer, it is possible to perform a composite display such as displaying black and a color (a desired color) on a white background. Thus, a color display can be formed by coloring the coloring region of the coloring layer corresponding to the display region.

(2) The liquid crystal display device of the present invention has a first liquid crystal display panel layer, and a second liquid crystal display panel layer provided below the first liquid crystal panel layer, The first
The liquid crystal display panel layer is formed by sealing a liquid crystal between a first polarizing layer and a pair of first substrates disposed on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side. A first liquid crystal cell, and a first liquid crystal cell disposed on the back of the first liquid crystal cell.
A first reflective polarizing layer that reflects polarized light having a second polarizing plane different from the first polarizing plane and transmits polarized light having a second polarizing plane different from the first polarizing plane, and wherein the second liquid crystal display panel layer has an inner surface side. A second liquid crystal cell formed by enclosing a liquid crystal between a pair of second substrates each provided with a second electrode, a coloring layer disposed on the back side of the second liquid crystal cell, A second reflective polarizing layer disposed on the back side of the layer and reflecting polarized light having a first polarizing plane and transmitting polarized light having a second polarizing plane different from the first polarizing plane. Features.

According to the present invention, when the second reflective polarizing layer and the absorbing layer are formed on the second liquid crystal display panel, the first liquid crystal display panel is turned on and the second liquid crystal display panel is turned off. In the state, the light transmitted through the second liquid crystal cell is:
The light passes through the colored layer and is reflected by the second reflective polarizing layer. Then, the light passes through the colored layer again, passes through the second liquid crystal cell, and passes through the first liquid crystal cell.
Are emitted in the color of the colored layer from the display panel.

On the other hand, when both the first and second liquid crystal display panels are in the ON state, the incident light transmitted through the second liquid crystal cell is transmitted through the first reflective polarizing layer and absorbed by the absorbing layer. I will. Therefore, in this case, the display image is displayed in black.

As described above, by using the second reflective polarizing layer and the absorbing layer, it is possible to secure the display areas of the monochrome display and the color display of the colored layer.

(3) The present invention preferably further comprises a light scattering layer on the back side of the first liquid crystal cell. Thus, when the first liquid crystal display panel is in the off state, a white display is provided instead of a mirror-like display.

(4) The present invention preferably further comprises a reflective layer on the back side of the second polarizing layer.

Thus, a colored display can be displayed brighter and more clearly.

(5) The present invention preferably further comprises an absorbing layer on the back side of the second reflective polarizing layer. Thereby, the polarized light transmitted through the second reflective polarizing layer is almost immediately absorbed, and the black display can be further clarified.

(6) In the present invention, it is preferable that an operation mechanism that mechanically operates in a panel plane direction is further provided on the back side of the second reflective polarizing layer. Accordingly, since the operating mechanism is included, the operating mechanism can perform black display in the display image, so that the operation itself of the operating mechanism can be combined and displayed as a black display image.

The display by the operation of the operation mechanism includes, for example, black display of a hand of a clock or the like.

(7) A liquid crystal display device according to the present invention has a first liquid crystal display panel layer and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. The first
The liquid crystal display panel layer is formed by sealing a liquid crystal between a first polarizing layer and a pair of first substrates disposed on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side. A first liquid crystal cell, and a first liquid crystal cell disposed on the back of the first liquid crystal cell.
A first reflective polarizing layer that reflects polarized light having a second polarizing plane different from the first polarizing plane and transmits polarized light having a second polarizing plane different from the first polarizing plane, and wherein the second liquid crystal display panel layer has an inner surface side. An ECB-type liquid crystal cell formed by enclosing liquid crystal between a pair of second substrates each provided with a second electrode;
A second reflective polarizing layer that is disposed on the back side of the B-type liquid crystal cell and reflects polarized light having a first polarizing surface and transmits polarized light having a second polarizing surface different from the first polarizing surface; It is characterized by having.

According to the present invention, by disposing an ECB type liquid crystal cell instead of the colored layer and the liquid crystal cell, a desired color can be partially generated by controlling the liquid crystal cell. Need not be formed in a plurality of colors.

(8) A liquid crystal display device according to the present invention includes a first liquid crystal display panel layer and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. The first
Of the liquid crystal display panel layer is controlled so as to have a density of １ ／ gradation, and the second liquid crystal display panel layer is
It is characterized in that display is controlled so as to have a density of two gradations. Thus, by displaying a display image in which the first and second liquid crystal display panel layers are combined and displayed, gradation display is possible.

(9) The liquid crystal display device according to the present invention is a liquid crystal display device in which first to Nth (N is a natural number) liquid crystal display panel layers are stacked in a plurality of stages, wherein the first to Nth liquid crystal displays are provided. Each of the panel layers includes a polarizing layer, a liquid crystal cell formed by sealing liquid crystal between a pair of substrates disposed on the back surface of the polarizing layer and provided with electrodes on the inner surface side, and a liquid crystal cell formed of the liquid crystal cell. A reflective polarizing layer disposed on the back surface of the mirror to reflect polarized light having a first polarizing plane and transmit polarized light having a second polarizing plane different from the first polarizing plane; Each of the liquid crystal display panel layers is provided on the back side of each of the liquid crystal cells, and each of the liquid crystal display panel layers is colored with a different color. It is characterized by being formed at different positions in the directions.

According to the present invention, on / off control of each of the first to N-th (N is a natural number) liquid crystal display panel layers and the reflection / polarization layers and coloring layers are performed by the same principle as described above. By stacking a plurality of liquid crystal display panel layers, in addition to displaying black and white, the colors of the N-1 types of colored layers are partially displayed, but the color is higher than that of a general full-color display panel. Lightening, darkening, etc. can be prevented.

(10) The electronic apparatus of the present invention includes the liquid crystal display device as described above. This makes it possible to provide an electronic device capable of performing easy-to-view display.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

Embodiment 1 (Overall Configuration) FIG. 1 is a sectional view schematically showing a liquid crystal display device of the present invention. As shown in FIG. 1, the liquid crystal display device 1 of the present embodiment includes a first liquid crystal display panel 10 and a second liquid crystal display panel 30 disposed on the back of the first liquid crystal display panel 10. It consists of.

As shown in FIG. 1, the first liquid crystal display panel 10 has a first polarizing layer 12 and a first electrode (not shown) disposed on the back surface of the first polarizing layer 12 and on the inner surface side. And a first liquid crystal cell 14 formed by enclosing a liquid crystal 16 between a pair of first substrates 15 provided with the first liquid crystal cell. The first liquid crystal cell 14 has a first polarization plane disposed on the back surface of the first liquid crystal cell 14. A reflective polarizer 20 that constitutes a reflective polarizing layer that reflects polarized light and transmits polarized light having a second polarization plane different from the first polarization plane. The substrate 15 is a glass substrate, PET
(Polyethylene terephthalate) substrate, PC (polycarbonate) substrate, plastic film and the like are preferable. The electrodes are made of ITO (Indium Tin Oxi
de) It is preferably formed of an oxide film or the like. Further, as will be described later, a light scattering layer, which is a diffusion layer, is provided on the front side of the reflective polarizer 20.

The second liquid crystal display panel 30 is disposed between a pair of second substrates 35 provided on the back surface of the reflective polarizer 20 and provided with second electrodes (not shown) on the inner surface side. A second liquid crystal cell 34 formed by enclosing a liquid crystal 36, a colored layer 38 disposed on the back of the second liquid crystal cell 34 for coloring the display screen, and a second layer disposed on the back of the colored layer 38. It is configured to include the two polarizing layers 40 and the reflecting layer 50 disposed on the back surface of the second polarizing layer 40.

The reflection layer 50 is formed by forming a deposited film of aluminum, silver, or the like on a substrate. further,
As the liquid crystal used in the liquid crystal cells 14 and 34, various types such as a TN type and an STN type can be used as long as the liquid crystal can control the state where the linearly polarized light is rotated and the state where the light is not rotated. The coloring layer 38 is preferably formed with a color filter, a fluorescent paint, or the like. In this figure, although there is a space between the layers, there is practically no space between the layers.

(Regarding Reflective Polarizer) Here, the characteristics of the reflective polarizer 20 will be described.

FIG. 2 is a schematic sectional view for explaining the principle of the reflective polarizer 20 of this embodiment. In this figure, the first
Only the polarizing layer 12, the first liquid crystal cell 14, the light scattering layer 18, which is a diffusion layer, the reflective polarizer 20, the colored layer 38, and the reflective layer 50 are shown.

The reflective polarizer 20 is preferably formed substantially in the same manner as that disclosed in, for example, International Publication No. WO95 / 17692. As shown in a schematic perspective view in FIG. That is, A layer 23 and B
The layer 24 has a structure in which many layers are alternately stacked in the Z-axis direction. The reflective polarizer 20 is formed by laminating many layers each having a thickness of less than 1 μm, and is a thin plate having a thickness of several hundred μm as a whole.

In this reflective polarizer 20, the A layer 23
The refractive index in the X-axis direction is Nax, and the refractive index in the Y-axis direction is Na
Assuming that y is y, the refractive index in the X-axis direction of the B layer 24 is Nbx, and the refractive index in the Y-axis direction is Nby, there is the following relationship between the refractive indices.

Nax ≠ Nay Nbx = Nby Nay = Nby The reflective polarizer 20 formed in this way transmits linearly polarized light in the Y-axis direction as it is.

Further, in the reflective polarizer 20 of the present embodiment, the thickness Ta of the A layer 23 and the thickness Tb of the B layer 24 of the pair of A layer 23 and B layer Is formed so as to have the following relationship with respect to the wavelength λ.

Ta · Nax + Tb · Nbx = λ / 2 (1) As described above, by forming the reflective polarizer 20,
The linearly polarized light in the X-axis direction of the wavelength λ incident on the reflective polarizer 20 from the Z-axis direction is reflected as linearly polarized light in the X-axis direction.

Further, a large number of pairs of the A layer 23 and the B layer 24 are combined with various combinations of thicknesses so that the relation of the formula (1) is satisfied for light of various wavelengths λ in the visible region. Has become. Thereby, the reflective polarizer 20 reflects linearly polarized light in the X-axis direction over all wavelengths in the visible region as linearly polarized light in the X-axis direction.

Therefore, the reflective polarizer 20 reflects linearly polarized light in the X-axis direction as linearly polarized light in the X-axis direction and transmits linearly polarized light in the Y-axis direction as linearly polarized light in the Y-axis direction in the entire visible region.

Next, the operation of the first liquid crystal display panel 10 using such a reflective polarizer 20 will be described.
The case where the polarization direction is rotated by 90 ° and the case where the light is not rotated will be described with reference to FIG. The first
When a TN liquid crystal is used for the liquid crystal cell 14, the linearly polarized light is not rotated when a predetermined voltage is applied between the electrodes sandwiching the liquid crystal, and the polarization direction of the linearly polarized light is 90 when no voltage is applied.
° Rotated.

The first liquid crystal cell 14 makes the polarization direction 90
When rotated, the first liquid crystal display panel 10 behaves as shown schematically in the right half of FIG. 2 of the light path and the direction of the polarization plane. In this figure, in the symbols drawn along the optical path, an asterisk-shaped symbol indicates natural light having no plane of polarization, arrows pointing to both the left and right indicate linearly polarized light in a polarization direction parallel to the paper surface, and a point at the center. Certain circles indicate linearly polarized light having a polarization direction perpendicular to the paper surface.

That is, the incident light 60, which is natural light incident on the first liquid crystal display panel 10, becomes linearly polarized light in a direction parallel to the paper surface (Y-axis direction) by the first polarizing layer 12,
The polarization direction is rotated by 90 ° by the first liquid crystal cell 14 to become linearly polarized light (polarized light having a first polarization plane) in a direction perpendicular to the paper surface (X-axis direction), and reflected polarized light that reflects linearly polarized light in the X-axis direction. The light is reflected by the element 20 without changing its polarization direction, is again rotated by the first liquid crystal cell 14, becomes linearly polarized light in the Y-axis direction, passes through the first polarizing layer 12, and emits light 6.
2 (optical path I).

As described above, when the polarization direction is rotated by 90 ° by the liquid crystal cell 14 to become a polarized light having the first polarization plane, most of the incident light linearly polarized by the first polarizing layer 12 is reflected. Since the light is reflected by the polarizer 20, a bright display is obtained. In addition, since the light scattering layer 18 is provided between the reflective polarizer 20 and the first liquid crystal cell 14, the display is not mirror-like but white. Note that a colored layer may be formed on the light scattering layer.

When the polarization direction is not rotated by the first liquid crystal cell 14, the first liquid crystal display panel 10 behaves as schematically shown in the left half of FIG. 2 of the light path and the direction of the polarization plane. .

That is, the incident light 64, which is the natural light incident on the first liquid crystal display panel 10, is linearly polarized in the Y-axis direction (polarized light having the second polarization plane) by the first polarizing layer 12.
Then, the light passes through the first liquid crystal cell 14 without being rotated, and passes through the reflective polarizer 20 that transmits linearly polarized light in the Y-axis direction. Then, the light passes through the reflective polarizer 20 again, together with the light transmitted through the colored layer 38, reflected by the reflective layer 44, transmitted through the colored layer 38 again, and reflected by the colored layer 38,
The light is transmitted through the first liquid crystal cell 14 as the Y-axis polarized light without being rotated, and is transmitted again through the first polarizing layer 12 to become the emission light 66 (optical path II).

Here, the light reflected by the colored layer 38 and the light reflected by the reflective layer 44 and transmitted again through the colored layer 38 are both Y-axis polarized lights having the color of the colored layer 38.

As described above, in the case of the polarized light having the second plane of polarization without being rotated by the first liquid crystal cell 14, the incident light 64 that has been linearly polarized by the first polarizing layer 12 is almost completely reflected by the reflective polarizer 20. Of the first liquid crystal display panel 1
Emitted from 0. The outgoing light 66 is partially absorbed by the colored layer 38, so that the display is darker than the outgoing light 62 which is rotated by 90 ° by the first liquid crystal cell 14 and reflected by the reflective polarizer 20. Note that since the reflective layer 50 is provided, light transmitted through the colored layer 38 is reflected by the reflective layer 50, transmitted again through the colored layer 38, and added to light reflected by the colored layer 38. The display is brighter than when there is no display.

As described above, when the linearly polarized light is rotated by 90 ° by the first liquid crystal cell 14 (off state), the light reflected by the reflective polarizer 20 is scattered by the light scattering layer 18 and becomes white. It becomes the outgoing light 62. When the linearly polarized light is not rotated by the first liquid crystal cell 14 (ON state), the light transmitted through the reflective polarizer 20 is colored by the coloring layer 38 to become the color emission light 66.

Based on the above-described characteristics, the first liquid crystal display panel 10 of the present embodiment allows the first liquid crystal cell 14 to make the portion that makes the linearly polarized light rotate by 90 ° and the portion that does not make it rotate corresponding to the display pattern. By arranging them, a color display or the like is displayed on a white background. Note that the first liquid crystal cell 14 converts the linearly polarized light by 90 ° in accordance with the display pattern.
An electrode is arranged on each of the pair of first substrates 15 constituting the first liquid crystal cell 14 on a side facing the liquid crystal 16 in order to form a portion to be rotated and a portion to not to rotate. A drive circuit (not shown) is connected to these electrodes so that application of a predetermined voltage to the liquid crystal 16 can be controlled. In such a first liquid crystal display panel 10, a display using an area where incident light passes through the reflective polarizer 20 as a pixel and an area where incident light is reflected by the reflective polarizer 20 as a background is usually used. Done.

(Second Liquid Crystal Display Panel) Further, a second liquid crystal display panel 30 is provided below the first liquid crystal display panel 10. The light transmitted through the first liquid crystal display panel 10 can generate two more types of polarized light depending on the on / off state of the second liquid crystal cell 34. That is,
As shown in FIG. 1, the incident light 64 transmitted through the reflective polarizer 20 is turned on by the first liquid crystal cell 14 and turned off by the second liquid crystal cell 34, so that the incident light 64 is transmitted to the second liquid crystal cell 34. It is rotated and becomes X-axis polarized light in the X-axis direction.

Here, the second polarizing layer 40 is formed so that the X-axis direction X
It is set so as to transmit the axially polarized light and not transmit the Y-axis polarized light. For this reason, the incident light 64 transmits through the coloring layer 38 and the second polarizing layer 40, is reflected by the reflecting layer 50, and again has the reverse path (the second polarizing layer 40, the coloring layer 38 and the second liquid crystal cell 34). Tracing the reflective polarizer 20, the first liquid crystal cell 14, and the first polarizing layer 12 and exiting as an exit light 66 (optical path)
II).

On the other hand, the first liquid crystal cell 14 and the second liquid crystal cell 3
When both of them are in the ON state, the incident light 68 transmits through the first liquid crystal display panel 10 similarly to the incident light 64, and the second liquid crystal cell 34 is in the ON state. Since the light passes through the second liquid crystal cell 34, it does not pass through the second polarizing layer 40. Therefore, the light is absorbed and the display is dark, and the display becomes black (optical path III).

In this way, when the first liquid crystal cell 14 of the first liquid crystal display panel 10 is in the off state, a display area 70 for white display is generated, and the first liquid crystal display panel 1
When 0 is in the on state and the second liquid crystal display panel 30 is in the off state, a display area 72 of the color of the colored layer 38 is generated, and both the first and second liquid crystal display panels 10 and 30 are in the on state. In some cases, a display area 74 for displaying black is generated. Therefore, three different display areas 70, 72, and 74 can be formed by controlling the first and second liquid crystal display panels 10 and 30 to be on and off, respectively.

FIG. 4 is a schematic sectional view showing a state in which the liquid crystal display device 1 of the present embodiment is formed. In this figure, the first
The liquid crystal 1 is disposed between the polarizing layer 12 and the pair of first substrates 15, 15.
6, a liquid crystal cell 34 formed by enclosing a liquid crystal 36 between a pair of second substrates 35, 35, and a colored layer. 38
, The second polarizing layer 40, and the reflective layer 50 are shown.
Although not shown in this figure, the liquid crystal display device 1
It is formed including a light scattering layer.

As described above, when the first liquid crystal cell 14 is controlled so that the polarized light arrives at the reflective polarizer 20, the portion has a shape corresponding to the shape pattern of the opposed portion of the electrode. The display is white (first color). Then, the first liquid crystal cell 1 is reflected by the reflection layer 50.
4. When the second liquid crystal cell 34 is controlled via the electrode, that portion has a shape corresponding to the shape pattern of the portion facing the electrode and is colored by the colored layer 38 (second color).
Becomes Further, when the first liquid crystal cell 14 and the second liquid crystal cell 34 are controlled via the electrodes in a state where polarized light that cannot transmit the polarized light is transmitted by the second polarizing layer 40, the first liquid crystal cell 1
4. There is almost no outgoing light in the portion that is not rotated by the second liquid crystal cell 34, and that portion becomes a black display (third color) in a shape corresponding to the shape pattern of the portion facing the electrode.

Therefore, it is not necessary to provide a colored layer with, for example, a black colored region and a white colored region, and a display in which the color can be locally changed while preventing a light-colored image from being formed is provided. And realize a display image which is easy to see. In addition, since the display area of the color display is a display of the form of the colored layer, it is possible to perform a composite display such as displaying black and a color (a desired color) on a white background. Thus, a color display can be formed by coloring the coloring region of the coloring layer corresponding to the display region.

As described above, the first embodiment has the following effects.

(1) In a region where the off-state light of the first liquid crystal cell is reflected by the reflective polarizer, a white (first color) display image is displayed, and the on-state light of the first liquid crystal cell is turned off. In a region where the light passes through the reflective polarizer and the second liquid crystal cell is turned off, a display image of the color (second color) of the colored layer is displayed, and the light in the on state of the first liquid crystal cell passes through the reflective polarizer. In a region where the light is transmitted and the second liquid crystal cell is turned on, black (the third
Is displayed.

(2) The display image of the area of the second color is
Since the display is in the form of a colored layer, a composite display is performed in a state of displaying a color display different from black and white, and a desired color display can be performed by the colored layer. Further, the display of the colored layer can be made brighter by the reflective layer.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The liquid crystal display device 100 shown in FIG. 5 has a first liquid crystal display panel 10 similar to that of the first embodiment and a second liquid crystal display panel 110.

In this example, the second liquid crystal display panel 110
Are different from those of the first embodiment.
That is, in the second liquid crystal display panel 110, the second reflective polarizer 120, which forms a second reflective polarizer similar to the first reflective polarizer 20, under the colored layer 38 of the second liquid crystal cell 34.
And an absorption layer 130 formed below the second reflective polarizer 120.

By forming in this manner, in the region where the first liquid crystal cell 14 is in the off state, as in the first embodiment,
The incident light 60 is linearly polarized by the first polarizing layer 12 in a direction parallel to the plane of the paper (Y-axis direction). The first liquid crystal cell 14 rotates the polarization direction by 90 °, and the direction perpendicular to the plane of the paper (X
(Polarized light having the first polarization plane) in the X-axis direction, and reflected by the reflective polarizer 20 that reflects the linearly-polarized light in the X-axis direction without changing the polarization direction.
4 and becomes a linearly polarized light in the Y-axis direction.
The light passes through the polarizing layer 12 and becomes the outgoing light 62 (optical path I).

When the first liquid crystal cell 14 is turned on,
In the region where the liquid crystal cell 24 is in the off state, the incident light 65 is reflected by the second reflective polarizer 120 and is emitted as emission light 67. That is, when the second liquid crystal cell 34 is turned off, the incident light 64 is rotated from the polarization in the Y-axis direction to the X-axis polarization in the X-axis direction in the second liquid crystal cell 34.

Here, the second reflective polarizer 120 is set so as to reflect the X-axis polarized light in the X-axis direction and transmit the Y-axis polarized light. For this reason, the above-mentioned incident light 65 is reflected by the second reflective polarizer 120 and again has the reverse path (the colored layer 38, the second liquid crystal cell 34, the first reflective polarizer 20, the first liquid crystal cell 14, Following the first polarizing layer 12), the outgoing light 6
7 (optical path II).

In a region where the first liquid crystal cell 14 is in the on state and the second liquid crystal cell 34 is in the on state, the incident light 68 is transmitted through the second reflective polarizer 120 and is absorbed by the absorption layer 130. That is, although the incident light 68 passes through the first liquid crystal display panel 10 in the same manner as the incident light 64, the second liquid crystal cell 3 is not rotated when the second liquid crystal cell 34 is in the ON state.
4, the light cannot pass through the second polarizing layer 40. Therefore, the light is absorbed and the display is dark, resulting in a black display (optical path).
III).

In this way, when the first liquid crystal cell 14 of the first liquid crystal display panel 10 is in the off state, a white display area 70 is generated, and the first liquid crystal display panel 1 is turned off.
When 0 is in the on state and the second liquid crystal display panel 30 is in the off state, a display area 72 of the color of the colored layer 38 is generated, and both the first and second liquid crystal display panels 10 and 30 are in the on state. In some cases, a display area 74 for displaying black is generated. Therefore, three different display areas 70, 72, and 74 can be formed by controlling the first and second liquid crystal display panels 10 and 30 to be on and off, respectively.

FIG. 6 is a schematic cross-sectional view showing a state where the liquid crystal display device 100 of the present example is formed. In this figure,
A first polarizing layer 12, a first liquid crystal cell 14 formed by enclosing a liquid crystal 16 between a pair of first substrates 15, 15, a reflective polarizer 20, and a pair of second substrates 35, 35; Liquid crystal 3
6, the second liquid crystal cell 34 formed by enclosing the
8, the second reflective polarizer 110, and the absorption layer 130 are shown. Although not shown in this figure, the liquid crystal display device 100 is formed including a light scattering layer.

As described above, according to the second embodiment, the use of the second reflective polarizer and the absorbing layer can also secure the display areas of the monochrome display and the color display of the colored layer.

Further, by using the second reflective polarizer also for the second liquid crystal display panel, the display can be easily viewed.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS. The same components as those in the above-described first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 7, a liquid crystal display device 200 has a second liquid crystal display panel 210 different from the first and second embodiments.
Is formed. This second liquid crystal display panel 210
An example is shown in which a clock mechanism 220, which is an example of an operation mechanism that operates mechanically, is provided below the second reflective polarizer 120.

That is, at the lower edge of the liquid crystal cell 34 of the second liquid crystal display panel 210, a frame-like structure 212 formed substantially in a rectangular shape around the outer periphery of the panel is provided. The above-mentioned absorption layer 13
It is constituted by attaching a plate-like body containing 0. The timepiece mechanism 220 is fixed to one surface of the absorption layer 130 in the gap 214 formed by the structure 212.
The timepiece mechanism 220 is provided with a hand including a long hand, a short hand and a second hand, and a drive mechanism (not shown) for operating the respective hands. Then, only this needle portion is installed inside the structure 212, and another driving mechanism is mounted on the structure 212.
By arranging them outside the above, the first and second embodiments
According to the same principle as described above, the needle can be displayed in black.

FIG. 8 shows an example of the display screen. In FIG. 8, the display screen of the liquid crystal display device 200 includes a white background 23.
0, a clock mechanism (hand) 220 for displaying black, a colored layer 38
Are displayed, for example, red display areas 232A to 232C.

As described above, by employing the above-described laminated structure, various display screens can be formed by combining monochrome display and color display while realizing clear and bright color display.

Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those of the above-described first to third embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 9 is a schematic sectional view showing the liquid crystal display device 300 of this example. In FIG. 9, the liquid crystal display 3
No. 00 forms a second liquid crystal display panel 310 different from the first to third embodiments. The second liquid crystal display panel 310 shows an example in which an opening (slit) is formed in a coloring layer formed below the second liquid crystal cell 34.

As shown in this figure, the second liquid crystal display panel 310 of this example has an opening (slit) in the coloring layer 312.
314 is provided, and the second reflective polarizer 120 is provided on the back side of the coloring layer 312.

For this reason, even when a voltage is applied to the first liquid crystal cell 14 and the second liquid crystal cell 34 in the region of the opening 314 provided in the coloring layer 312, the polarized light transmitted through the liquid crystal cell 34 in this region. Is the second reflective polarizer 1 without being colored.
20 is reflected.

On the other hand, in the area of the opening 314, the first
In a region where a voltage is applied to the liquid crystal cell 14 and the second liquid crystal cell 4, the polarized light having the first polarization plane is changed to the second reflective polarizer 12.
0, and the display is made by the polarized light reflected by the second reflective polarizer 120.

Thus, since the light passing through the opening 314 is not colored by the coloring layer 312, by providing another coloring layer as a lower layer, it is possible to display the colors of the coloring layers other than white, black, and the coloring layer. .

As described above, in the region where the colored layer 312 is formed, three regions of white display, black display, and colored display of the colored layer are formed as in the first to third embodiments.
In this example, in addition to these, a region by the opening 314 is formed.

Therefore, by using this opening 314 and performing on / off control of the first and second liquid crystal cells, for example, by inserting another desired coloring layer, diffusion layer, or the like into this opening 314. , Various colors and display areas can be formed.

[Fifth Embodiment] Next, a fifth embodiment of the present invention will be described with reference to FIGS. The same components as those in the above-described first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 10 is a schematic sectional view showing a liquid crystal display device 400 of this example. In FIG. 10, a liquid crystal display device 400 includes a first liquid crystal display panel 10 similar to the first to fourth embodiments and a second liquid crystal display device disposed below the first liquid crystal panel 10 and similar to the fourth embodiment. A liquid crystal display panel 310;
The third liquid crystal display panel 410 is disposed below the second liquid crystal display panel 310 to form a three-layer structure.

Of these, the third liquid crystal display panel 410
Adopts the same laminated structure as the second liquid crystal panel of the second embodiment, and has a third electrode (not shown) on the inner surface side.
A third liquid crystal cell 434 formed by enclosing a liquid crystal 436 between a pair of second substrates 435 and 435 provided with a first color layer 31 disposed on the back side of the third liquid crystal cell 434.
A second colored layer 438 having a color different from the second color, and a second polarized light which is disposed on the back side of the second colored layer 438 and reflects polarized light having the first polarized surface and is different from the first polarized surface. The third reflective polarizer 440 that transmits polarized light having a surface, and an absorbing layer 450 disposed on the back side of the third reflective polarizer 440 are included. An opening (slit) 314 is provided in the first coloring layer 312.

In such a liquid crystal display device 400, the first
In the display area 470 where the liquid crystal cell 14 is off, the incident light 460 is reflected by the first reflective polarizer 20, and a white display (first color) by a light scattering layer (not shown) as in the second embodiment.
Is obtained (optical path I).

In the display area 472 where the first liquid crystal cell 14 is on and the second liquid crystal cell 34 is off, the incident light 463
Is reflected by the second reflective polarizer 120 to obtain the outgoing light 464 of the color display (second color) by the first colored layer 312 (for example, red) as in the second embodiment (optical path II).

In the region where the opening 314 of the first colored layer 312 is formed, the first liquid crystal cell 14
In the display area 474 where the liquid crystal cell 34 is in the on state and the third liquid crystal cell 434 is in the off state, the incident light 465 is reflected by the third reflective polarizer 440, and is displayed in color by the second colored layer 438 (for example, green). The emitted light 466 of the third color) is obtained (optical path III).

That is, since no voltage is applied to the third liquid crystal cell 434, the light transmitted through the second reflective polarizer is rotated and transmitted by the third liquid crystal cell 434. Here, since the third reflective polarizer 440 has the same characteristics as the first and second reflective polarizers, the third reflective polarizer 440 is configured to reflect the polarized light rotated by the third liquid crystal cell 434 and transmit the polarized light that is not rotated. You.

Therefore, the polarized light that has been rotated and transmitted by the third liquid crystal cell 434 is reflected by the second colored layer 438 and the third reflective polarizer 440, and is colored (third color).
The light is emitted from the first liquid crystal display panel 10 by following the previous path in reverse.

In the region where the opening 314 of the first colored layer 312 is formed, the first liquid crystal cell 14 is in the ON state / the second
In the display region 476 in which the liquid crystal cell 34 is in the ON state and the third liquid crystal cell 434 is in the ON state, the incident light 465 passes through the third reflective polarizer 440 and is absorbed by the absorption layer 450, so that black display (the fourth color) is performed. ) Is obtained (light path IV).

As described above, since the light passing through the opening is not colored by the first colored layer, by providing another second colored layer below, the other colored layers other than white, black, and the first colored layer are provided. The colors of the two colored layers can be displayed, and two different color displays besides black and white can be locally obtained. Therefore, it is possible to perform a display in which the color can be locally changed while preventing a light color image from being formed, thereby realizing a display image that is easy to see.

In the fifth embodiment, the laminated structure of the second embodiment is adopted as the third liquid crystal display panel. However, the laminated structure of the other first and third embodiments is adopted. May be.

Further, in the fifth embodiment, an example of the three-layer structure is shown, but the first N-layer (N is a natural number) layer structure is used.
To Nth liquid crystal display panels may be stacked. In this case, each of the first to Nth liquid crystal display panels has a polarizing layer, a liquid crystal cell, and a reflective polarizer. Further, it is preferable that each of the second to N-th liquid crystal display panels forms a coloring layer colored with a different color, and that each coloring layer has a slit formed at a different position on a plane. Further, each colored layer may be formed at a different position on a plane. Accordingly, on and off control of each of the first to Nth (N is a natural number) liquid crystal display panels, and a plurality of liquid crystal display panels are stacked by each reflective polarizing layer and each colored layer, based on the same principle as described above. Thus, in addition to the black-and-white display, while partially displaying each color of the N-1 types of colored layers, compared to a general full-color display panel,
The color can be prevented from becoming pale or dark.

FIG. 11 is a plan view showing a display example of the liquid crystal display device 400 of this embodiment. In this figure, a display 474 is shown.
A is green, display 472A is red, display 474b is green,
The display 474C is green, the display 472B is red, and the display 476.
A and the display 476B are black. That is, the liquid crystal display device 400 of this example has the displays 476A, 476B, 474A to 476A as shown in the schematic plan view of FIG.
474C, 472A, and 472B display a matrix display dot portion, an icon display icon portion, and the like.

The display colors of these displays are obtained by coloring the first coloring layer 312 and the second coloring layer 432 as described above. That is, as shown in FIG. 12 which is a plan view of the first coloring layer 312 and the second coloring layer 432 of the liquid crystal display device 400 of this example, the coloring layers include the displays 474A to 474C.
Green colored regions 438A to 438C at positions corresponding to
Red colored regions 312A and 312B are provided at positions corresponding to the displays 472A and 472B, and black colored regions 450A and 450B are provided at positions corresponding to the displays 476A and 476B.

As described above, each colored region provided in the colored layer is provided with the first and second reflective polarizers at positions corresponding to the pixels forming each display in order to make each display a predetermined color display. 120 and 140 are respectively attached to the upper surfaces.

It is preferable that each colored layer correspond to each display pattern and be provided slightly larger than the display pattern. A plurality of colors are displayed on the screen, and the same color is displayed on the same display pattern. For example, only a region corresponding to the icon forms a coloring region of a different color, and the other regions form a coloring region of the same color.

In this way, color display is performed in units of icons and dots. Each icon and dot are always displayed in the same color. Even if there is some parallax, as long as the display of icons and dots is observed, In, parallax does not matter.

In this example, the display 476A.4
Although the colored layers are provided for each row of 76B, a colored display may be provided for each character by providing a colored layer for each character. That is, in the displays 476A and 476B, coloring regions of various colors may be provided for a plurality of dots. In this way, display in dot units, that is, one character or one character
Since one symbol unit is displayed and one character or one symbol unit is always displayed in the same color, even if there is some parallax, as long as the display is viewed in one character or one symbol unit, , I do not mind parallax.

In this way, by employing the above-described laminated structure, various display screens can be formed by combining black-and-white display and color display while achieving clear and bright color display.

Embodiment 6 Next, an embodiment of an electronic apparatus using the above-described liquid crystal display device will be described with reference to FIGS.
5 will be described.

An electronic apparatus using the liquid crystal display device according to any of the above-described first to fourth embodiments includes a display information output source 100 in addition to the first and second liquid crystal display panels 1010 and 1030.
4, display information processing circuit 1006, display drive circuit 1011
1031, a clock generation circuit 1002, and various circuits, and of course, a power supply circuit 1008 that supplies power to each of the circuits.

The display information output source 1004 includes ROM, RA
It includes a memory such as an M, a tuning circuit for tuning and outputting a television signal, and the like, and outputs display information such as a video signal based on a clock from the clock generation circuit 1002. The display information processing circuit 1006 processes and outputs display information based on the clock from the clock generation circuit 1002. The display information processing circuit 1006 can include, for example, an amplification / polarity inversion circuit, a phase expansion circuit, a rotation circuit, a gamma correction circuit, a clamp circuit, and the like. Each of the display driving circuits 1011 and 1031 includes a scanning side driving circuit and a data side driving circuit,
The first and second liquid crystal display panels 1010 and 1030 are respectively driven for display. The power supply circuit 1008 supplies power to each of the above-described circuits.

As electronic devices having such a configuration, for example, a personal computer (PC) and an engineering workstation (EWS) compatible with multimedia shown in FIG. 14, a cellular phone, a word processor, a television, and a viewfinder type shown in FIG. Or a monitor direct-view video tape recorder, electronic organizer, electronic desk calculator,
Car navigation devices, watches, clocks, POS terminals,
Examples include a device equipped with a touch panel, a pager, a mini-disc player, an IC card, a remote controller for various electronic devices, and various measuring devices (such as an oil meter).

The personal computer 11 shown in FIG.
00 is a main unit 1104 having a keyboard 1102
And a liquid crystal display screen 1110.

A mobile phone 1200 shown in FIG. 15 uses the liquid crystal display device of the above embodiment as a mobile phone 1 as an electronic device.
200 is shown as a perspective view. The mobile phone 1200 is provided with a display unit (first liquid crystal display panel) 1210 at the top of the main body. Of course,
In addition, the second liquid crystal display panel and the like are provided inside the housing 1212. Thus, it is possible to provide an electronic device capable of performing a display in which a color is locally changed.

Although the apparatus and method according to the present invention have been described in accordance with certain specific embodiments thereof, those skilled in the art will recognize that they have been described herein without departing from the spirit and scope of the invention. Various modifications can be made to the embodiment. For example, in terms of the driving method, a liquid crystal display panel is a simple matrix liquid crystal display panel or a static drive liquid crystal display panel that does not use a switching element in the panel itself, a three-terminal switching element represented by a TFT, or a two-terminal represented by an MIM. Active matrix liquid crystal display panel using terminal switching elements, TN type, STN type, guest host type
Various types of liquid crystal panels such as a phase transition type and a ferroelectric type can be used.

The second liquid crystal display panel disposed below the first liquid crystal display panel may be a DAP type, a homogeneous type, a hybrid type, or the like.
A panel of controlled birefringence type (a bent plate is overlapped and shifted little by little) may be used. In this case, without forming a colored layer such as a color filter,
Since a specific color can be displayed at a specific portion, it is not necessary to provide a coloring layer such as a color filter of a plurality of colors.

Here, the ECB type panel functions as an optical axis conversion means for converting incident linearly polarized light into elliptical polarization by controlling the liquid crystal phase with an electric field. That is, when incident light of R, G, and B having different phases enters, for example, in the structure of the example of FIG. 1, the light passes through the reflective polarizer 20 and is converted into different polarization axes (elliptically polarized light). Is transmitted and some colors are almost absorbed. As a result, light transmitted through the ECB type panel is only a specific color.

Therefore, in the past, for example, when trying to display full colors in full-screen display, black duties and the like became a problem, and good colors were not output. On the other hand, in this example, since the ECB type panel is used only for changing the color, when a specific color is locally output, the specific area can be controlled and the color can be freely changed to a desired specific color. Becomes

As described above, when the ECB type panel is used as the lower layer in the liquid crystal display device having a multi-layer structure of the first layer and the second layer, for example, the following electronic devices can be displayed. Become. That is, for example, the temperature is displayed in black and white on a display screen of a thermometer or the like, and when the temperature exceeds a predetermined temperature, a voltage is applied to the lower ECB type panel to make the display red, and the temperature becomes lower than the predetermined temperature. If it does, it can be used for purposes such as displaying green, and the display of a specific location can be controlled to be freely changed to a plurality of colors. In this case, it is needless to say that a temperature detecting unit and a control unit for controlling display control based on the detection result are provided.

Further, the color layer may be formed so as to have a different color by changing the absorption amount. Further, when performing colored display, the first liquid crystal display panel of the first layer displays a display of a half gradation and the second liquid crystal display panel of the second layer.
In the liquid crystal display panel of (1), a means for displaying a display corresponding to a half gradation may be provided to enable gradation display.

In the first to fifth embodiments, the reflective polarizer used in the liquid crystal display panel is an example of a stacked reflective polarizer. However, the reflective polarizer is not limited to this, and the reflective polarizer is not limited to the first polarizer. Other types of reflective polarizers may be used as long as they reflect polarized light having a plane and transmit polarized light having a second polarization plane substantially orthogonal to the first polarization plane. For example, instead of a laminated reflective polarizer, a combination of a cholesteric liquid crystal layer and a quarter-wave plate, one using Brewster's angle (SID 92 DIGEST P.427-429), one using a hologram, etc. Can also be used.

It is to be noted that the backlight may be provided as a light emitting means on the back side of the second liquid crystal display panel.
In this case, a backlight, EL (electroluminescence), or the like is provided as light emitting means on the back surface of the second reflective polarizer. The backlight has a light source and a light guide plate. Here, in the transmissive display mode, similarly to the reflective display mode, the cell region (pixel) in the off state is brightly displayed. On the other hand, in the reflective display mode, as in the transmissive display mode, the cell region (pixel) in the ON state is darkly displayed. As a result, the brightness is not inverted between the transmissive display mode and the reflective display mode.

In this case, since the reflective polarizer functions as a half mirror, even if the incident light is weak, for example, even in a dark environment such as nighttime, the display becomes inverted in contrast and the display becomes difficult to see. Can be avoided. Therefore, the display image can be accurately recognized even in a relatively dark environment.

Further, the case where an LCD display is used as the second liquid crystal display panel disposed in the lower layer has been described. However, the present invention is not limited to this. For example, a thin cathode ray tube, a liquid crystal shutter, or the like is used. Small TV, electroluminescence, plasma display, CRT display, FED (Field EmissionDis
play) various video display devices such as a panel can be used.

Further, although a clock has been described as an example of the electronic apparatus as shown in the above-described sixth embodiment, the present invention can be suitably applied particularly to a clock which displays a world time. That is, the liquid crystal display panel of the first layer may be configured to display, for example, black or the like, and the second liquid crystal display panel may be configured to display a world map of red, green, or the like. In addition, the present invention can be applied to a calendar display watch, a liquid crystal analog display watch, a liquid crystal television watch, and the like.

Further, in the first liquid crystal display panel, a λ / 2 retardation layer may be formed between the light scattering layer and the first reflective polarizer. Further, a λ / 4 retardation layer may be formed instead of the λ / 2 retardation layer.

Further, when the liquid crystal is an STN liquid crystal,
A configuration may be adopted in which a retardation film such as an optically anisotropic body for color compensation is interposed under the second polarizing layer to correct coloring generated in the STN liquid crystal.

[Brief description of the drawings]

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

FIG. 2 is a schematic cross-sectional view for explaining the liquid crystal display device of FIG.

FIG. 3 is a perspective view showing a reflective polarizer of the liquid crystal display device of FIG.

FIG. 4 is a schematic sectional view showing a state where the liquid crystal display device of FIG. 1 is formed.

FIG. 5 is a schematic sectional view showing an example of another embodiment of the liquid crystal display device according to the present invention.

FIG. 6 is a schematic cross-sectional view showing a state where the liquid crystal display device of FIG. 5 is formed.

FIG. 7 is a schematic sectional view showing an example of another embodiment of the liquid crystal display device according to the present invention.

FIG. 8 is an explanatory diagram showing an example of a display image displayed on the liquid crystal display device of FIG.

FIG. 9 is a schematic sectional view showing an example of another embodiment of the liquid crystal display device according to the present invention.

FIG. 10 is a schematic sectional view showing an example of another embodiment of the liquid crystal display device according to the present invention.

11 is an explanatory diagram showing an example of a display image displayed on the liquid crystal display device of FIG.

FIG. 12 is an explanatory diagram showing an example of a display image displayed on the liquid crystal display device of FIG.

FIG. 13 is a functional block diagram illustrating an example of an electronic apparatus using the liquid crystal display device of the present invention.

FIG. 14 is a front view illustrating an example of an electronic apparatus using the liquid crystal display device of the present invention.

FIG. 15 is an exploded perspective view illustrating an example of an electronic apparatus using the liquid crystal display device of the present invention.

DESCRIPTION OF SYMBOLS 2, 100, 200, 300, 400 Liquid crystal display device 10 First liquid crystal display panel 12 First polarizing layer 14 First liquid crystal cell 15 Substrate 16 Liquid crystal 18 Light scattering layer 20 First reflective polarizer 30, 110, 210, 310 Second liquid crystal display panel 34 Second liquid crystal cell 38, 312 Coloring layer 40 Second polarizing layer 50 Reflecting layer 60, 64, 65, 68 Incident light 62, 65, 67 Outgoing light 70, 470 First Display area 72, 472 Second display area 74, 474 Third display area 120 Second reflective polarizer 130 Absorption layer 220 Needle 410 Third liquid crystal display panel 434 Third liquid crystal cell 438 Second coloring layer 440 Third reflective polarizer 450 absorption layer 476 fourth display area 1000 electronic device

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yutaka Ozawa 3-5-5 Yamato, Suwa-shi, Nagano F-term in Seiko Epson Corporation (reference) 2H089 HA22 HA31 HA32 QA16 2H091 FA08Y FA08Z FA14Z FD06 LA30 5C094 AA08 BA43 DA03 DA13 ED20 GA10 HA10

Claims (10)

[Claims] A first liquid crystal display panel layer; and a second liquid crystal display panel layer provided below the first liquid crystal panel layer, wherein the first liquid crystal display panel layer is A first liquid crystal cell formed by sealing a liquid crystal between a first polarizing layer and a pair of first substrates disposed on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side, respectively; And a reflective polarizing layer disposed on the back surface of the first liquid crystal cell and reflecting polarized light having a first polarizing plane and transmitting polarized light having a second polarizing plane different from the first polarizing plane. A second liquid crystal cell formed by enclosing liquid crystal between a pair of second substrates each provided with a second electrode on the inner surface side; A colored layer provided on the back side, and a second polarizing layer provided on the back side of the colored layer. Characteristic liquid crystal display device. 2. A first liquid crystal display panel layer, comprising: a first liquid crystal display panel layer; and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. A first liquid crystal cell formed by sealing a liquid crystal between a first polarizing layer and a pair of first substrates disposed on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side, respectively; A first reflective polarizing layer disposed on the back of the first liquid crystal cell and reflecting polarized light having a first polarizing plane and transmitting polarized light having a second polarizing plane different from the first polarizing plane; Wherein the second liquid crystal display panel layer comprises: a second liquid crystal cell formed by sealing liquid crystal between a pair of second substrates each having a second electrode provided on the inner surface side; A colored layer disposed on the back side of the cell; and a polarized light disposed on the back side of the colored layer and having a first polarization plane. The liquid crystal display device characterized by having reflected a second reflective polarizing layer that transmits polarized light having a second polarization plane different from said first polarization plane, a. 3. The liquid crystal display device according to claim 1, further comprising a light scattering layer on the back side of the first liquid crystal cell. 4. The liquid crystal display device according to claim 1, further comprising a reflective layer on the back side of the second polarizing layer. 5. The liquid crystal display device according to claim 2, further comprising an absorbing layer on the back side of the second reflective polarizing layer. 6. The operation mechanism according to claim 2, further comprising an operation mechanism that mechanically operates in a panel plane direction on a rear surface side of the second reflective polarizing layer. A liquid crystal display device characterized in that: 7. A liquid crystal display panel layer comprising: a first liquid crystal display panel layer; and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. A first liquid crystal cell formed by sealing a liquid crystal between a first polarizing layer and a pair of first substrates disposed on a back surface of the first polarizing layer and provided with a first electrode on an inner surface side, respectively; A first reflective polarizing layer disposed on the back of the first liquid crystal cell and reflecting polarized light having a first polarizing plane and transmitting polarized light having a second polarizing plane different from the first polarizing plane; Wherein the second liquid crystal display panel layer comprises: an ECB-type liquid crystal cell formed by enclosing liquid crystal between a pair of second substrates each provided with a second electrode on an inner surface side; Reflecting polarized light having a first plane of polarization disposed on the back side of the cell and different from the first plane of polarization 2
And a second reflective polarizing layer that transmits polarized light having a polarization plane of: 8. A liquid crystal display device comprising: a first liquid crystal display panel layer; and a second liquid crystal display panel layer provided below the first liquid crystal panel layer. , And the second liquid crystal display panel layer is controlled so as to have a density of 分 の gradation. apparatus. 9. A liquid crystal display device comprising a plurality of stacked first to Nth (N is a natural number) liquid crystal display panel layers, wherein each of the first to Nth liquid crystal display panel layers includes a polarizing layer and A liquid crystal cell formed by enclosing a liquid crystal between a pair of substrates provided on the back surface of the polarizing layer and having electrodes provided on the inner surface side thereof; and a first liquid crystal cell provided on the back surface of the liquid crystal cell. A reflective polarizing layer that reflects polarized light having a polarization plane and transmits polarized light having a second polarization plane different from the first polarization plane, wherein each of the second to Nth liquid crystal display panel layers includes: A colored layer provided on the back side of each of the liquid crystal cells, and each of the colored layers is colored with a different color. Each of the colored layers is formed at a different position in a panel plane direction. A liquid crystal display device characterized by the above-mentioned. 10. An electronic apparatus comprising the liquid crystal display device according to claim 1.