JP2001215487A - Liquid crystal device and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the brightness of the screen of a reflection type liquid crystal device. SOLUTION: A reflection layer consisting of a metal thin film is formed on a substrate, and color filters are formed on the surface of the reflection layer. The color filters are formed as separated from each other making a gap, and the reflection la is formed on at least a part of the gap between the color filters. The reflection layer is continuously formed on the whole surface of the substrate, and the color filters are directly formed on the reflection layer without using a joining layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective liquid crystal device or a transflective liquid crystal device, and more particularly, to a reflective layer of a liquid crystal device having a reflective layer.

[0002]

2. Description of the Related Art In recent years, a liquid crystal display device has been widely used as a means for displaying information in electronic devices such as a notebook personal computer, a mobile phone, and an electronic organizer.

A liquid crystal display device is a non-light emitting type display device in which a liquid crystal material is sandwiched between a pair of substrates disposed to face each other. The display is performed by modulating the light passing through the liquid crystal according to the alignment state of the liquid crystal. As a display method of such a liquid crystal display device, a reflection type and a transmission type are known.

[0006] FIG. 16 shows a reflective liquid crystal device in which the reflective layer is disposed on the liquid crystal layer side of the substrate and which includes the reflective layer.
Transparent electrodes 103 and 104 made of, for example, indium tin oxide (ITO) are provided on the surface of the substrate 102 facing the substrate 101 and the surface of the substrate 101.
A reflective layer 106 made of a light-reflective metal thin film is disposed between the transparent electrode 103 on the side and the substrate 101. External light 420 incident from the substrate 102 side is reflected on the reflective layer 106 on the liquid crystal side of the substrate 101 via the liquid crystal layer 105,
An image is displayed by modulating the light transmitted through the liquid crystal layer according to the alignment state of the liquid crystal molecules.

On the other hand, in a transmission type display system shown in FIG. 17, a transparent electrode 103 such as ITO for driving a liquid crystal layer is provided on a surface of a substrate 102 opposed to a substrate 101.
By arranging 104 and controlling the liquid crystal molecule alignment state in the liquid crystal layer 105, the light emitted from the light source (backlight) 400 provided outside the substrate 101 is modulated,
An image is displayed.

The above-mentioned reflection type liquid crystal display device does not require a light source such as a backlight unlike the transmission type liquid crystal display device, and can perform display using natural light or ambient external light such as a fluorescent lamp. It is widely used as a display device for electronic devices and the like.

FIGS. 18 and 19 show a reflection type liquid crystal device for color display. FIG. 18 is a plan view, and FIG. 19 is a sectional view. A color filter 111 is disposed on the surface of the reflective layer 106. Color filter 111
Are formed in stripes such that blue (B), green (G), and red (R) are continuous for each column, and the colors are alternately arranged.

Looking at the sectional structure, as shown in FIG.
A reflective layer 106 made of a metal thin film such as aluminum is provided on the surface of a substrate 101 made of glass or the like. Each of blue (B), green (G), and red (R) is provided on the surface of the reflective layer 106 via an adhesion layer 108. Color filters 111 are provided so as to be in contact with each other in a direction extending in a stripe shape, and a transparent electrode 103 is provided on a surface of the color filter 111 via a protective layer 109 made of a transparent acrylic resin. I have. In the figure, reference numeral 117 denotes a connection terminal connected to the electrode 103.

[0009]

The reflection type liquid crystal display device utilizes external light such as natural light without having a special light source, but the light is absorbed each time the external light passes through a transparent glass substrate. However, there is a problem that the brightness of the display screen is reduced.
In particular, in a reflection type liquid crystal display device of a color system, when the passing light is weak, the contrast is also weak, and there is a problem that a clear color display cannot be obtained.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display screen having a brightness corresponding to the intended use of a reflection type liquid crystal display device, and to obtain a clear color display screen with contrast. It is another object of the present invention to provide an electronic device having a clear color display screen with contrast.

[0011]

In order to solve the above problems, a liquid crystal device according to the present invention has a liquid crystal sandwiched between a pair of substrates.
Electrodes are formed on opposing surfaces between the substrates, respectively.
A reflective layer made of a metal film is formed on one of the substrates facing the liquid crystal, and a color filter is formed on the surface of the reflective layer. The color filters are separated from each other with a gap therebetween. And the reflection layer is formed in at least a part of the gap between the color filters.

According to the liquid crystal device having such a configuration, since the incident external light is reflected by the gap between the color filters, the brightness of the screen is increased, and a clear color display screen with contrast can be obtained. it can.

Further, in the present invention, a liquid crystal is sandwiched between a pair of substrates, and electrodes are formed on opposing surfaces between the substrates, and a metal thin film is formed on one of the substrates facing the liquid crystal. And a color filter is formed on the surface of the reflection layer. The color filters are formed so as to be separated from each other with a gap therebetween, and at least one of the gaps between the color filters is formed. The liquid crystal device is characterized in that the reflective layer is formed in the portion, and a light shielding layer is formed in at least a part of the gap between the color filters.

According to the liquid crystal device having such a configuration, the ratio of reflection of incident external light can be arbitrarily adjusted, so that a clear color display screen having an appropriate contrast can be obtained.

In the present invention, it is preferable that the reflective layer is formed continuously over at least the entire driving region (driving display region) of the liquid crystal device.

This is because external light can be reflected under each color filter and at a gap between each color filter, so that the entire screen can be brightened.

Preferably, the reflection layer is made of aluminum or an aluminum alloy. This is because aluminum or an aluminum alloy has a high light reflectance of 85% or more and is inexpensive.

In the present invention, the reflective layer may have a light transmitting opening corresponding to each pixel.

With this configuration, the brightness of the display screen can be adjusted according to the brightness of the external light by using both the reflected light and the transmitted light.

Further, in the present invention, the color filter is formed directly on the surface of the reflection layer.

By forming the color filter directly on the surface of the reflective layer, the step of forming the adhesion layer can be omitted, and therefore, there is also an advantage that the manufacturing process can be simplified.

In the present invention, the light-shielding layer may have a color filter overlapping structure.

Since the light-shielding layer can be formed simultaneously with the formation of the color filter, there is an advantage that the manufacturing process can be simplified.

In the liquid crystal device according to the present invention, the light-shielding layer may be formed in a stripe shape in one direction of the driving region.

With such a configuration, there is an advantage that a display screen having a high contrast in a specific viewing direction is obtained.

Further, an electronic apparatus according to the present invention is an electronic apparatus including the above-described liquid crystal device according to the present invention.

The electronic apparatus according to the present invention is an electronic apparatus having an appropriate screen brightness and a clear color display with a clear contrast.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A reflective or transflective liquid crystal device according to the present invention and a reflective substrate used in the liquid crystal device will be described in detail below.

The liquid crystal device according to the present invention is a liquid crystal device having a liquid crystal material sandwiched between at least one pair of substrates, an electrode for driving the liquid crystal on the opposing surface between the substrates, and a reflective layer described later. The one with Here, the type and shape of the electrode are not particularly limited, and a suitable electrode may be appropriately arranged according to a liquid crystal display system such as an active matrix type or a passive matrix type. Also,
In an active matrix liquid crystal device, there is no particular limitation on a pixel control element, and any of a three-terminal element and a two-terminal element may be used. If it is a three-terminal element,
In the case of a TFT (Thin Film Transistor) element or a two-terminal element, a TFD (Thin Film Diode) element can be used.

The reflective substrate for a liquid crystal device of the present invention refers to one substrate provided with a reflective layer among a pair of opposed substrates, and is provided on the substrate surface (the surface on the side sandwiching the liquid crystal layer). It has a reflective layer, a color filter and an electrode, and if necessary, a light-shielding layer.

(First Embodiment) FIG. 1 is a perspective view of a color display type liquid crystal device 50 of the present invention. FIG. 2 shows FIG.
2 is a sectional view taken along line AA ′ of FIG. As shown in FIG. 1, a color filter corresponding to any one of blue (B), green (G), and red (R) is provided on the reflective substrate 10 on the substrate 1 for each pixel (for each dot). ), Are arranged in a matrix. On the opposing substrate 20, the pixel electrodes 4 provided for each pixel (dot), the liquid crystal driving elements 25 connected to the electrodes corresponding to the pixels one by one, and the liquid crystal driving elements 25 are arranged in rows or columns. A wiring 22 (or a signal line) serving as a scanning line connected for each row is provided.

Although not shown, alignment films (not shown) are provided on the liquid crystal layer side of the reflection substrate and the counter substrate, respectively. Further, the pair of substrates is bonded to each other with a sealant therebetween. It constitutes a liquid crystal panel. An external circuit for driving the liquid crystal is connected to at least one substrate outside the sealing material. An optical filter such as a polarizing film or a retardation film is appropriately attached to the surface of each substrate opposite to the surface sandwiching the liquid crystal layer.

As shown in FIG. 2, a reflective layer 6 made of a metal film such as aluminum is provided on the surface of the transparent substrate 1 made of glass or the like on the liquid crystal layer side. And the color filter 12 so as to be in direct contact with
(B), 14 (G) and 16 (R) are arranged. Each of the color filters 12, 14, 16 is formed in a matrix at a position facing the pixel electrode 4 on the other counter substrate 20. Each color filter is composed of a blue color filter ("B" shown) 12, a green color filter ("G" shown) 14, and a red color filter ("R" shown) 16. Each of the color filters 12, 14, 16 is composed of three primary colors of light (B, G, R). In the embodiments shown in FIGS. 1 and 2, the color filters 12, 14, and 16 are arranged at intervals d. In the present embodiment, no light-shielding layer corresponding to the non-image display area (the part where the pixel electrode is not arranged on the opposing substrate) is not provided between the color filters. That is, the reflection layer 6 is exposed between the color filters for each pixel from the color filters. FIG. 3 shows this planar arrangement. FIG. 3 is a view seen from above the counter substrate 20. FIG. 3 is an enlarged view of the periphery of the pixel electrode 4 corresponding to the red color filter. Wirings 22 are arranged in parallel on both sides of the transparent electrode 4, and one of the wirings 22 is, for example, a TFD.
It is connected to the pixel electrode 4 via a liquid crystal driving element 25 such as a (thin film diode). The liquid crystal driving element 25 is
Back-to-Ba with two diodes connected in series
It is a ck type diode. In FIG. 3, a portion surrounded by a solid line in a square is the pixel electrode 4 on the counter substrate 20 side, and a portion extending in the horizontal direction (a direction intersecting with the extending direction of the wiring 22) by a dotted line is the transparent electrode on the reflection substrate 10 side. The electrode 3.

FIG. 4 is a sectional view taken along the line BB 'of FIG. 3, and FIG. 5 is a sectional view taken along the line CC' of FIG. As shown in FIGS. 4 and 5, the color filter 16 for red and the color filters of each color adjacent to the red color filter 16 have a predetermined interval in both the extending direction of the transparent electrode 3 and the extending direction of the wiring 22. Are separated by. That is, the reflective layer is exposed from the color filters between the color filters of each pixel, and the protective film 9 is directly formed on the surface of the reflective layer 6 between the color filters.
Light that has entered the gap between the color filters from the counter substrate 20 side is reflected on the surface of the reflective layer 6, resulting in an increase in brightness of the entire screen.

Now, one color filter for red 1
6 has been described, it goes without saying that all the color filters shown in FIG. 1 have the same structure.

Although no light-shielding layer is provided between the color filters in this embodiment, a light-shielding layer may be provided at a part between the color filters as described later.

Next, a method for manufacturing such a reflective substrate 10 will be described.

The reflection substrate 10 of the present embodiment can be manufactured, for example, as shown in FIGS.

First, at least over the entire surface of the substrate 1 made of transparent glass, which is to be a display area,
Using a sputtering method or the like, a thin film of, for example, aluminum to be the reflection layer 6 is formed to a thickness of about 200 nm (FIG. 6).
(See (1)).

Next, a predetermined resist in which a blue pigment is dispersed is applied to the surface of the reflective layer 6 to form a resist film 212 for forming a blue color filter.
(See (2)).

The resist film 212 for forming a blue color filter layer is exposed, developed, and patterned using a predetermined mask to obtain a blue color filter 12 shown in FIG.

Next, a predetermined resist in which a red pigment is dispersed is applied to the surface of the substrate 1 provided with the blue color filter 12 to form a resist film 216 for forming a red color filter. 6 (4)).

Then, the above-described resist film 216 for forming a red color filter is exposed, developed and patterned using a predetermined mask to obtain a red color filter 16 shown in FIG. 7 (5).

Further, the blue color filter 12
A predetermined resist in which a green pigment is dispersed is applied to the surface of the substrate 1 provided with the red color filter 16 and a resist film 214 for forming a green color filter.
Is formed (see FIG. 7 (6)).

The resist film 214 for forming a green color filter is exposed, developed, and patterned using a predetermined mask to obtain a green color filter 14 shown in FIG. 7 (7).

Finally, each color filter 12,
A protective layer 9 made of an acrylic resin or the like is formed on the reflective layers 6 exposed on the color filters 14 and 16 and between the color filters, and provided on the opposing substrate on the protective layer 9. The transparent electrode 3 in a stripe shape is formed so as to intersect with the wiring 22 formed. An alignment film (not shown) is applied to the surface of the transparent electrode 3 and subjected to an alignment process to form the reflective substrate 1.
0 is completed.

The reflective substrate 10 is aligned with the other counter substrate 20 at the pixels, and is adhered at predetermined intervals to form a liquid crystal device.

As described above, in this embodiment, the blue, red, and green color filters are provided for each pixel in the direction in which the transparent electrode 3 extends and the direction in which the scanning line 22 extends. The color filters are formed so as to be separated from each other, and a reflective layer made of a metal film is exposed in a gap between the color filters. Then, at least in a region surrounded by the seal including the drive display region, the reflective layer is formed continuously on the substrate surface, and each color filter is directly formed on the surface of the reflective layer.

The liquid crystal device obtained in this embodiment is bright, rich in contrast, and has a clear display screen.

(Second Embodiment) Next, as a second embodiment, a light-shielding layer directed in one direction of a driving region is formed in a stripe shape in at least a part of the gap between the color filters. An example of the reflection type liquid crystal device is described. The difference from the first embodiment is that the light shielding layer 27 is provided in the gap in the same direction as the direction in which the transparent electrode extends, among the gaps of the color filters for each pixel. The other configuration is the same as that of the first embodiment, and the description is omitted.

In the first embodiment, incident light (external light incident from the surface of the opposite substrate 20 opposite to the liquid crystal layer sandwiching surface) is reflected all around the color filter for each pixel. However, the display screen may be too bright. In such a case, a light-blocking layer is provided around a part of the color filter to limit the reflected light and adjust the brightness of the display screen. For example, FIG. 8 shows an example in which a light-shielding layer is provided in a stripe shape only in one direction of a display screen, that is, in one direction of a driving display region.

FIG. 8, similarly to FIG. 3, is a view seen through from above the counter substrate 20 and shows an enlarged view of the periphery of the pixel electrode 4 for red. The difference from FIG. 3 is that light-shielding layers 27 are provided above and below the pixel electrode 4 in the left-right direction of the paper (the same direction as the direction in which the transparent electrode 3 extends). In the vertical direction (the direction in which the wiring 22 extends) with respect to the left and right paper surfaces of the pixel electrode 4, no light-shielding layer is provided as in FIG. 3.

By adopting such a structure, the amount of reflected light is reduced by half, and the screen has an appropriate brightness. When viewed from the vertical direction of the paper (the direction perpendicular to the direction in which the light-shielding layer extends). This has the advantage that the screen has a clear contrast because the reflected light is recognized.

FIG. 9 is a sectional view taken along the line EE ′ of FIG.
Shown in The cross section along the line EE ′ is a cross section that crosses the light shielding layer 27. Since the cross section in the direction perpendicular to the line EE 'does not cross the light shielding layer 27, it has the same cross sectional structure as that of FIG.

In FIG. 9, the red color filter 1
A light-shielding layer 27 is provided between the blue color filter 12 and the green color filter 14 on both sides of the light-emitting element 6. In this embodiment, the light-shielding layer 27 has a three-layer structure in which a red color filter resist film, a blue color filter resist film, and a green color filter resist film are stacked. With a light-shielding layer having such a structure, the light-shielding layer can be formed simultaneously in the process of forming the color filters of each color,
It does not increase the number of manufacturing steps.

Next, a method for manufacturing such a reflective substrate 10 will be described.

The reflection substrate 10 of the present embodiment can be manufactured, for example, as shown in FIGS.

First, as in the first embodiment, a film of, for example, aluminum, which is to be the reflection layer 6, is formed to a thickness of about 200 nm on at least the entire surface of the transparent glass substrate 1, which is to be the display area. Form (FIG. 10 (1))
reference).

Next, a predetermined resist in which a blue pigment is dispersed is applied to the surface of the aluminum thin film to form a resist film 212 for forming a blue color filter and a resist film 212 which is the lowermost layer of the light shielding layer. Form (FIG. 10)
(See (2)).

Then, the resist film 212 for forming the blue color filter layer is exposed, developed, and patterned using a predetermined mask, so that the blue color filter and the light shielding layer shown in FIG. Obtain a lower resist film.

Next, a predetermined resist in which a red pigment is dispersed is applied to the surface of the substrate 1 provided with the blue color filter 12 and the lowermost layer of the light shielding layer, and the red color filter and the light shielding layer are formed. Resist film 216 for forming second layer
Is formed (see FIG. 10 (4)).

Then, the above-mentioned resist film 216 for forming a red color filter is exposed, developed and patterned using a predetermined mask to form a second layer of the red color filter and the light shielding layer shown in FIG. Obtain a resist film to be a layer.

Further, the blue color filter 12
A predetermined resist in which a green pigment is dispersed is applied to the surface of the substrate 1 provided with a red color filter 16 and a laminated portion of a first layer and a second layer of a light-shielding layer to form a green color filter. A resist film 214 is formed as shown in FIG.
(6)).

Then, the above-mentioned resist film 214 for forming a green color filter is exposed, developed and patterned by using a predetermined mask, so that the green color filter 14 and the light shielding layer shown in FIG. A three-layer resist film is obtained. The light-shielding layer 27 is obtained at the portion where the lowermost layer, the second layer, and the third layer resist film overlap.

As is clear from FIGS. 9 to 11, FIG. 9 shows a case where the color formation order of the color filters is blue → green → red, and FIGS. 10 and 11 show a color formation order of blue → red. → The case of green color is shown. The color filter of each color may be formed from any color, but the component of the blue pigment for forming the blue color filter includes a component that enhances the adhesive strength between the color filter and the aluminum film. Therefore, it is desirable to form the blue color filters first in the order of forming the color filters.

Finally, each color filter 12,
14, 16 and light shielding layer 27 and exposed reflective layer 6
A protective layer 9 made of an acrylic resin or the like on the
On the protective layer 9, a stripe-shaped transparent electrode 3 is formed so as to intersect with the scanning line 22 provided on the counter substrate (see FIG. 11 (8)).

An alignment film (not shown) is applied on the surface of the transparent electrode 3 and subjected to an alignment treatment, whereby the reflection substrate 10 is completed.

This reflection substrate 10 is used as another counter substrate 2
After aligning the pixels with 0 and bonding them at predetermined intervals to form a liquid crystal panel, an external circuit or the like for driving liquid crystal is connected to the liquid crystal panel.

As described above, in this embodiment, blue, red,
A color filter for each pixel of green is formed separately from each other for each pixel, and in one direction of a gap between the color filters, a reflective layer made of a metal thin film is exposed from the color filter. A reflection panel having a structure in which a light shielding layer is provided in the other direction of the gap between the filters. Also in this embodiment, the reflection layer is formed continuously on the substrate surface at least in the drive display area in the seal. Each color filter is formed on the surface of the reflective layer so as to directly contact the reflective layer.

By manufacturing in this manner, the patterning step can be omitted, so that the manufacturing step does not become complicated, and the obtained liquid crystal display device is moderately bright and has a high contrast with a visual field in a specific direction. It has a clear display screen.

In this embodiment, the direction in which the light-shielding layer is provided is the direction in which the transparent electrode 3 extends. However, the light-shielding layer is provided in the gap between the color filters in the same direction as the direction in which the scanning lines 22 extend. You may make it.

(Third Embodiment) Next, as a third embodiment, an example in which a slit is provided in a reflective layer and the present invention is applied to a transflective liquid crystal panel will be described. The difference from the first embodiment is that an opening for transmitting light of a light source provided in the liquid crystal device is provided in a portion corresponding to each pixel of the reflection layer, and the other points are the first embodiment. Therefore, the description is omitted.

The reflection type liquid crystal device uses external light such as natural light to display an image without providing a special light source in the device itself. However, there is a disadvantage that the display screen becomes dark if the amount of external light is small.
Therefore, a semi-transmissive liquid crystal display device having both the advantages of the reflective type and the transmissive type can be provided by additionally providing the liquid crystal device with an external light source.

FIG. 12 is a view showing a sectional structure of a reflection panel according to the third embodiment. FIG. 12 differs from the first embodiment of FIG. 2 in that an opening 7 is provided in the reflective layer 6. Other structures are the same as in the first embodiment or the second embodiment without any problem.

In FIG. 12, the openings 7 in the reflection layer 6 are provided immediately below the color filters 12, 14, 16 for each pixel. By providing the opening 7 in the reflective layer 6 in this way, if an auxiliary external light source (not shown) is arranged below the reflective substrate 10 to form a transflective liquid crystal display device, the brightness of the display screen can be reduced. In addition, the use environment of the liquid crystal display device can be further expanded.

In the reflecting substrate according to the third embodiment, after a metal film to be a reflecting layer is formed on the substrate, the metal film is etched using a predetermined mask pattern to obtain a predetermined opening. . The size of the opening and the pitch of the opening are not particularly limited, and may be appropriately selected depending on the required brightness of the screen and the intensity of the light source.

Also, the shape and number of the openings can be appropriately set according to the display characteristics at the time of semi-transmission. The shape of the opening may be a square shape with the opening closed or a slit shape. A plurality of openings may be provided for one pixel.

In the first to third embodiments, the surface of the reflective layer is a mirror surface, but the present invention is not limited to this. The surface of the reflective layer on the liquid crystal layer side is made uneven,
It is also possible to use a scattering surface for scattering the reflected light. In this case, the scattering surface can be formed by the following two methods. First, an uneven surface is formed on the surface of the reflective substrate 10 itself, and a reflective layer is provided thereon. In this method, the uneven surface of the substrate is reflected on the surface of the reflective layer to make the surface of the reflective layer uneven. The second is a method in which the surface of the reflective substrate itself is a mirror surface, and irregularities are formed on the surface of the reflective layer itself.

The reflection layer is not limited to aluminum or an aluminum alloy, but may be, for example, silver or a silver alloy. Ag-Pd as a silver alloy
-A Cu alloy can be used.

Hereinafter, specific examples of electronic equipment using the liquid crystal device of the present invention will be described.

FIGS. 13 to 15 show examples of electronic equipment using the liquid crystal device of the present invention.

FIG. 13 is a perspective view showing an example of a portable telephone. Reference numeral 1000 denotes a mobile phone main body, and reference numeral 1001 denotes a liquid crystal display unit using the liquid crystal device of the present invention. FIG. 14 is a perspective view illustrating an example of a wristwatch-type electronic device. Reference numeral 1100 denotes a watch main body, and reference numeral 1101 denotes a liquid crystal display unit using the liquid crystal device of the present invention. FIG. 15 shows a word processor.
1 is a perspective view illustrating an example of a portable information processing device such as a personal computer. In FIG. 15, reference numeral 1200 denotes an information processing apparatus main body, 1202 denotes an input unit such as a keyboard, 1204 denotes an information processing apparatus, and 1206 denotes a liquid crystal display unit using the liquid crystal device of the present invention.

Since these electronic devices shown in FIGS. 13 to 15 are provided with the liquid crystal device according to the present invention,
The brightness of the screen can be made moderately bright, and a clear color display screen with high contrast is provided.
Further, there is an advantage that the method for manufacturing the liquid crystal device can be provided simply and inexpensively.

[0084]

According to the liquid crystal device of the present invention, the display screen can be made bright, and a clear display screen with high contrast can be obtained.

In addition, since the amount of light reflection can be appropriately adjusted according to the use of the liquid crystal device (conditions under which external light is obtained), there is an advantage that the application range of the liquid crystal device is expanded.

Further, even when the liquid crystal device is used as a semi-transmissive type, the amount of light reflection can be appropriately adjusted, so that there is an advantage that the application range of the liquid crystal device is further expanded.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a liquid crystal display device of the present invention.

FIG. 2 is a sectional view taken along the line A-A 'of FIG.

FIG. 3 is an enlarged plan view showing the vicinity of one pixel electrode of the liquid crystal display device of FIG. 1;

FIG. 4 is a sectional view taken along the line B-B 'of FIG.

FIG. 5 is a sectional view taken along the line C-C 'of FIG.

FIG. 6 is a process sectional view illustrating the manufacturing process of the liquid crystal display device.

FIG. 7 is a process sectional view following FIG. 6;

FIG. 8 is an enlarged plan view showing the vicinity of one pixel electrode of a liquid crystal display device according to a second embodiment.

FIG. 9 is a cross-sectional view taken along line E-E ′ of FIG.

FIG. 10 is a process cross-sectional view showing another manufacturing process of the liquid crystal display device.

FIG. 11 is a process sectional view following FIG. 10;

FIG. 12 is a diagram illustrating a cross-sectional structure of a liquid crystal display device according to a third embodiment.

FIG. 13 is a perspective view illustrating an example of an electronic apparatus including the liquid crystal display device of the present invention.

FIG. 14 is a perspective view illustrating an example of another electronic apparatus including the liquid crystal display device of the present invention.

FIG. 15 is a perspective view showing an example of still another electronic device provided with the liquid crystal display device of the present invention.

FIG. 16 is a partial cross-sectional view illustrating a reflective liquid crystal display device.

FIG. 17 is a partial cross-sectional view illustrating a transmissive liquid crystal display device.

FIG. 18 is a plan view of a conventional reflective color liquid crystal display device.

19 is a diagram showing a cross-sectional structure of the liquid crystal display device of FIG.

[Explanation of symbols]

 1, 2, 101, 102 ... substrate 3, 4 ... transparent electrode 103, 104 ... electrode 5, 105 ... liquid crystal layer 6, 106 ... Reflective layer 7 Slit 108 Adhesive layer 9, 109 Protective layer 10 Reflective substrate 12, 14, 16 Color filter 20 ····························································································· 1000 mobile phone 1100 clock 1200 information processing device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tadashi Tsuki 3-3-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (72) Inventor Chihiro Tanaka 3-5-2, Yamato, Suwa-shi, Nagano Seiko-Epson In-house F term (reference) 2H048 BA02 BA11 BA16 BA17 BB02 BB37 BB44 2H091 FA02Y FA08X FA08Z FA11X FA16Y FA35Y FB08 FC12 FC26 GA06 GA13 GA16 LA15 LA17 5C094 AA06 AA07 BA43 BA92 CA19 CA24 DA12 EA05

Claims (9)

[Claims] 1. A liquid crystal is sandwiched between a pair of substrates, electrodes are formed on opposing surfaces between the substrates, and a reflective layer made of a metal film is provided on one of the substrates facing the liquid crystal. A plurality of color filters are formed on the surface of the reflective layer corresponding to each pixel, and each of the color filters is formed apart from each other, Wherein the reflection layer is formed in at least a part of the gap. 2. A liquid crystal is sandwiched between a pair of substrates, electrodes are formed on opposing surfaces between the substrates, and a reflection layer made of a metal film is provided on one of the substrates facing the liquid crystal. A plurality of color filters corresponding to each pixel are formed on the surface of the reflective layer, and the color filters are formed so as to be separated from each other with a gap therebetween; The liquid crystal device according to claim 1, wherein the reflection layer is formed in at least a part of a gap between the filters, and a light shielding layer is formed in at least a part of the gap between the color filters. 3. The device according to claim 1, wherein the reflection layer is formed continuously at least over the entire surface of the driving area.
Or the liquid crystal device according to claim 2. 4. The liquid crystal device according to claim 1, wherein the reflection layer is made of aluminum or an aluminum alloy. 5. The liquid crystal device according to claim 1, wherein the reflection layer has an opening for transmitting light. 6. The liquid crystal device according to claim 1, wherein the color filter is formed directly on the surface of the reflection layer. 7. The liquid crystal device according to claim 2, wherein the light shielding layer has an overlapping structure of the color filters. 8. The liquid crystal device according to claim 2, wherein the light shielding layer is formed in a stripe shape in one direction of the driving region. 9. An electronic apparatus comprising the liquid crystal device according to claim 1.