JP3237632B2 - Liquid crystal display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-way display type liquid crystal display device for displaying both a reflection type display and a transmission type display.

[0002]

2. Description of the Related Art As a liquid crystal display device, a reflection type display using external light (natural light, indoor light, etc.) which is light of a use environment, and a transmission type display using illumination light from an illumination means generally called a backlight. There is a so-called two-way display type that performs both display and display.

This two-way liquid crystal display device emits illumination light behind the liquid crystal display element toward the liquid crystal display element and directs external light entering from the front of the liquid crystal display element toward the liquid crystal display element. Illumination means for reflecting light.

The two-way liquid crystal display device performs a reflective display using external light without emitting illumination light from the illuminating means when external light of sufficient brightness is obtained. When there is a shortage, the illumination means emits illumination light to compensate for screen brightness, and the illumination means generally includes a semi-transmissive reflection plate on the front surface of an illumination panel that emits illumination light. The arrangement is used.

In general, as the liquid crystal display element, a thin film transistor (hereinafter referred to as a TFT) is used as an active element.
An active matrix type using the following method is used.

An active matrix liquid crystal display element is
A plurality of pixel electrodes arranged in a matrix in the row and column directions on the inner surface of the rear substrate of the pair of front and rear substrates that face each other with the liquid crystal layer interposed therebetween. A plurality of connected TFTs, a gate line that is wired along one side for each pixel electrode row, and supplies a gate signal to the TFT, and a gate line that is wired along one side for each pixel electrode column. A data line for supplying a data signal to the TFT, and a compensation capacitor formed for each pixel electrode row and facing the edge of the pixel electrode via an insulating film to form a compensation capacitor between the pixel electrode and the pixel electrode row An electrode is provided, and a counter electrode facing each of the pixel electrodes and a light shielding film corresponding to a region between the plurality of pixel electrodes are provided on the inner surface of the front substrate.

[0007] The active matrix liquid crystal display device includes a device for displaying a monochrome image and a device for displaying a multi-color image such as a full-color image. The liquid crystal display device for displaying a color image is composed of the pair of substrates. A color film of a plurality of colors having different transmission wavelength bands is alternately arranged in the row direction on the inner surface of any one of them (generally, the front-side substrate) so as to correspond to the plurality of pixel electrodes, respectively. I have.

[0008] The plurality of colored films are, for example, generally
It is a color filter of three colors of red, green, and blue. In the conventional liquid crystal display element, most of the light transmitted through the region corresponding to the plurality of pixel electrodes is emitted as colored light. Each film is provided so as to correspond to the entire region corresponding to the pixel electrode.

[0009]

However, in the conventional two-way liquid crystal display device for displaying a color image, the brightness of the screen by the reflection type display is dark, and even in a relatively bright environment, the illumination light is supplied from the illumination means. It is necessary to compensate the screen brightness by emitting light.

This is because, of the light transmitted through the liquid crystal display element, light having a wavelength component in the absorption wavelength band of the coloring film is absorbed by the coloring film, and light having a wavelength component in the transmission wavelength band of the coloring film is absorbed by the coloring film. This is because the light is transmitted through the colored film and emitted as colored light, and in the case of a reflective display using external light, external light incident from the front is light having an intensity corresponding to the brightness of the use environment, Since the light passes through the liquid crystal display element, is reflected by the illuminating means behind the liquid crystal display element, and is transmitted again through the liquid crystal display element and is emitted to the front surface, the light passes through the colored film twice. The intensity is extremely lower than the intensity of external light incident from the front.

Therefore, in the conventional two-way liquid crystal display device, even in a relatively bright environment, it is necessary to emit illumination light from the illumination means to compensate for the screen luminance.
There is a problem that power consumption is large.

According to the present invention, in order to improve the brightness of the screen by the reflection type display and reduce the frequency of emitting the illuminating light from the illuminating means to supplement the screen brightness, the power consumption is reduced and the brightness is sufficiently increased. It is an object of the present invention to provide a two-way display type liquid crystal display device capable of displaying a color image with good contrast.

[0013]

A liquid crystal display device according to the present invention is provided with an active matrix type liquid crystal display element, and is disposed behind the liquid crystal display element, and emits illumination light toward the liquid crystal display element. Illuminating means for reflecting external light incident from the front of the liquid crystal display element toward the liquid crystal display element, and a pair of front and rear substrates opposed to each other with a liquid crystal layer of the liquid crystal display element interposed therebetween. A plurality of pixel electrodes arranged in a matrix in the row and column directions on the inner surface of the rear substrate, a plurality of thin film transistors connected to each of the pixel electrodes, and one side for each pixel electrode row. A gate line that is wired along and supplies a gate signal to the thin film transistor; and a data line that is wired along one side of each pixel electrode row and is connected to the thin film transistor. A data line for supplying a signal and a compensation capacitance electrode formed for each pixel electrode row and facing the edge of the pixel electrode via an insulating film to form a compensation capacitance between the pixel electrode and the pixel electrode are provided. A counter electrode facing each of the pixel electrodes on an inner surface of the front substrate, and a region between pixel electrodes adjacent to each other in the column direction across at least the gate line among regions between the plurality of pixel electrodes. And a plurality of colored films having different transmission wavelength bands are alternately arranged in the row direction on the inner surface of one of the pair of substrates in correspondence with the plurality of pixel electrodes, respectively. The compensation capacitance electrode is provided side by side, and a metal film having a high light reflectance is used to separate a line portion facing one edge of the pixel electrode arranged in a row direction, and the data line from the line portion. In Extending in a region between pixel electrodes adjacent to each other in the direction, and extending at both side edges of the pixel electrodes adjacent to side edges of the pixel electrodes adjacent to each other in the row direction. Of the corresponding areas, the areas surrounded by the compensation capacitance electrode and the light shielding film respectively emit the illumination light incident from the back side and the external light incident from the front and reflected by the illumination means forward. And a region corresponding to at least the extension portion of the compensation capacitance electrode is a reflection region in which external light incident from the front is reflected by the compensation capacitance electrode and emitted forward. In addition, the colored films of the plurality of colors each have an area smaller than the area of the transmission region, and are colored from a region of the plurality of transmission regions corresponding to the colored film. Light is emitted, respectively, uncolored light is emitted from a region that does not correspond to the colored film, and non-colored light reflected by the compensation capacitance electrode is reflected from at least the reflection region corresponding to the extension of the compensation capacitance electrode. The light is emitted.

This liquid crystal display device performs a reflective display using external light without emitting illumination light from the illuminating means when external light of sufficient brightness is obtained, and the brightness of external light is insufficient. In this case, the illumination means emits illumination light from the illumination means to compensate for screen brightness, and is a two-way display type. In an environment where external light can be obtained, of the external light incident on the liquid crystal display element from the front thereof, Light incident on a plurality of transmissive regions surrounded by the compensation capacitance electrode and the light-shielding film in regions respectively corresponding to the plurality of pixel electrodes is transmitted through the transmissive regions to form a rear side of the liquid crystal display element. The reflected light is reflected by the illuminating means disposed on the light-emitting device, and the reflected light is transmitted through the transmission region and emitted to the front of the liquid crystal display element, and the light incident on the reflection region corresponding to the compensation capacitance electrode is reflected on the rear substrate. Inside front It is reflected by the compensation capacitor electrode, and the reflected light is emitted to the front of the liquid crystal display device.

When illumination light is emitted from the illumination means, the illumination light is incident on the liquid crystal display element from the back thereof, and is incident on a region of the illumination light corresponding to the compensation capacitor electrode and the light shielding film. The light thus emitted is shielded by the compensation capacitor electrode and the light shielding film, and only the light incident on the transmission region passes through the transmission region and is emitted to the front of the liquid crystal display element.

In this liquid crystal display device, the colored films of the plurality of colors each have an area smaller than the area of the transmission region. Even when the illumination means emits illumination light to compensate for screen brightness, light of the wavelength component in the absorption wavelength band is absorbed by the colored film from each of the plurality of transmission regions corresponding to the colored film. Colored light (light having a wavelength component in the transmission wavelength band of the colored film) colored in the color of the colored film is emitted, and non-colored light is not absorbed by the colored film from regions of the plurality of transmission regions that do not correspond to the colored film. Light is emitted.

Therefore, the color pixels of each color displayed by the light respectively emitted from the plurality of transmissive regions of the liquid crystal display element are colored in the color of the colored film corresponding to the transmissive regions, and the brightness is adjusted to the above-mentioned value. Pixels raised by non-colored light without luminance reduction due to absorption by the colored film,
Therefore, even when performing a reflective display using external light, or when making up the screen brightness by emitting illumination light from the illumination means, the colored light colored by the colored film is emitted from the entire area of the transmission area. A much brighter color image can be displayed as compared with the case.

Further, in this liquid crystal display device, the compensating capacitance electrode is formed of a metal film having a high light reflectivity, a line portion facing one edge of the pixel electrodes arranged in the row direction, From the data line to the region between the pixel electrodes adjacent to each other in the row direction, and to have a shape having, at both side edges, extension portions respectively opposed to the side edges of the pixel electrodes adjacent to each other in the row direction. Therefore, of the external light incident on the liquid crystal display element from the front thereof, the light incident on the reflection area corresponding to at least the extension of the compensation capacitor electrode is subjected to the compensation on the inner surface of the rear substrate. The light is reflected by the capacitor electrode, and is emitted to the front of the liquid crystal display element as a non-colored light having no luminance decrease due to absorption by the colored film.

The liquid crystal in a region of the reflection region corresponding to the compensation capacitance electrode corresponding to a region between adjacent pixel electrodes, that is, a region where a driving electric field applied between the pixel electrode and the counter electrode does not act. Since the alignment state of the molecules hardly changes from the initial alignment state, the reflectance of the external light incident on the region between the pixel electrodes in the reflection region is always kept high.

Therefore, the brightness of the screen at the time of the reflection type display using the external light is determined by the brightness of the color pixel of each color displayed by the light (colored light and non-colored light) respectively emitted from the plurality of transmission areas. Is much brighter than the case where the colored light colored by the colored film is emitted from the entire area of the transmission area, and the entire screen is formed by the uncolored reflected light emitted from the reflection area corresponding to the compensation capacitance electrode. It is enough brightness to raise the brightness of.

Therefore, according to this liquid crystal display device,
In order to improve the brightness of the screen by the reflective display and to supplement the screen brightness, the frequency of emitting the illuminating light from the illuminating means can be reduced and the power consumption can be reduced.

Further, in this liquid crystal display device, when the brightness of the external light is insufficient, the illuminating means emits the illuminating light to compensate for the screen brightness. Of the illuminating light from the illuminating means, Since the light incident on the region corresponding to the compensation capacitance electrode and the light-shielding film is shielded by the compensation capacitance electrode and the light-shielding film, even if the illumination means emits the illumination light, the light is interposed between the data lines. The light emitted from the region between the pixel electrodes adjacent to each other in the direction (the region corresponding to the extension of the compensation capacitor electrode) is only the reflected light of the external light incident from the front of the liquid crystal display element. When the illumination light is emitted, the region between the pixel electrodes adjacent to each other in the row direction across the data line does not become too bright and the contrast of the displayed image does not decrease.

Further, the light-shielding film provided on the inner surface of the front substrate of the liquid crystal display element may be arranged so that pixels adjacent to each other in the column direction across at least the gate line in a region between the plurality of pixel electrodes Since the area between the electrodes corresponds to the area between the electrodes, the area between the pixel electrodes corresponding to the light-shielding film is also used to emit the illumination light from the illumination means and perform the screen brightness even when performing the reflective display using external light. Is also in the dark state, and thereby the contrast of the displayed image can be improved.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal display device according to the present invention is provided with an active matrix type liquid crystal display element and a liquid crystal display element disposed behind the liquid crystal display element for emitting illumination light toward the liquid crystal display element and for displaying the liquid crystal. Illumination means for reflecting external light incident from the front of the display element toward the liquid crystal display element, and a two-way display type, as described above, on the inner surface of the rear substrate of the liquid crystal display element. The provided compensation capacitance electrode is formed by a metal film having a high light reflectivity, and a line portion opposed to one edge of the pixel electrode arranged in the row direction and a data line interposed between the line portion and the line portion. It is formed in a shape which is extended to a region between the corresponding pixel electrodes and has an extension portion which is opposed to a side edge portion of the pixel electrode which is adjacent in the row direction at both side edges, and which is respectively opposed to a plurality of pixel electrodes. The compensation capacitor electrode in the corresponding region, and the front-side substrate of the front-side substrate corresponding to the region between the pixel electrodes adjacent to each other in the column direction across at least the gate line in the region between the plurality of pixel electrodes. Areas surrounded by the light-shielding film provided on the inner surface, respectively, a plurality of transmissive areas for emitting the illumination light incident from the back side and the external light incident from the front and reflected by the illumination means and emitting the light forward, When the compensation capacitance is used, the red filter is formed in an area of 90 to 95% of the area of the transmission region, the green filter is formed in an area of 70 to 80% of the area of the transmission region, and the blue filter is formed in the area of 70 to 80% of the area of the transmission region. 8 of transmission area
It is preferable that the color image is formed in an area of 5 to 90%, so that a color image with high color reproducibility and a good balance between the saturation and brightness of the red, green and blue color pixels is displayed. can do.

Further, it is desirable that each of the plurality of pixel electrodes and the light-transmitting regions be formed in a rectangular shape having a width in the column direction larger than a width in the row direction. In order to improve the brightness of the screen by the reflection type display, reduce the frequency of emitting the illumination light from the illumination means in order to supplement the screen brightness, reduce the power consumption, and provide a color image with sufficient brightness and good contrast. Can be displayed.

In the liquid crystal display device according to the present invention, the colored films of the plurality of colors may include a first colored film that transmits light in a long wavelength band of a visible light band and a wavelength component of an intermediate wavelength band. In the case of a three-color coloring film of a second-color coloring film that transmits light and a third-color coloring film that transmits light of a wavelength component in a short wavelength band, the first color is used. Membrane 2
The second colored film of the other two colored films is formed in an area larger than the area of the colored film of the third color.
It is preferable that the color pixel is formed in an area smaller than the area of the colored film of the color, and by doing so, the color pixel of each color displayed by the colored light and the non-colored light respectively emitted from the plurality of transmission regions. A color image with good color reproducibility can be displayed by balancing saturation and brightness.

In this case, for example, the color film of the first color is a red filter, the color film of the second color is a green filter,
When the colored film of the third color is a blue filter, the red filter is formed in an area of 90 to 95% of the area of the transmission region, and the green filter is formed in an area of 70 to 80% of the area of the transmission region. , And the blue filter is preferably formed in an area of 85 to 90% of the area of the transmission region. In this manner, the saturation and the saturation of the color pixels of red, green, and blue can be obtained. Good balance of brightness,
A color image with high color reproducibility can be displayed.

Further, it is desirable that each of the plurality of pixel electrodes and the light-transmitting regions is formed in a rectangular shape whose width in the column direction is larger than that in the row direction. Colored light of a plurality of colors is alternately emitted from a plurality of transmissive regions at a small pitch to improve the color mixture thereof, and a high-resolution color image can be displayed.

In the case where the light-transmitting region is formed in a rectangular shape whose width in the column direction is larger than the width in the row direction, the area ratio of the three colored films to the transmitting region is a predetermined value. A larger colored film is formed into a shape having a width smaller than the width of the transmissive region in the row direction and a length at least over the entire length of the transmissive region in the column direction, and the colored film having a smaller area ratio than the colored film, By forming a shape having a width smaller than the width of the region between the extension portions of the compensation capacitance electrode and a length smaller than the length in the column direction of the transmission region, the transmission region corresponding to the colored film having a large area ratio The non-colored light is emitted from a region on the side of the colored film in the row direction, and the coloring in the lateral region and the column direction of the colored film in the row direction of the transmission region corresponding to the colored film having the small area ratio. film Is preferably non-colored light from the area of the side is to be emitted, by doing so,
It is possible to better balance the saturation and brightness of the color pixels of each color displayed by the colored light and the non-colored light emitted from the plurality of transmissive regions, respectively, and to display a color image with better color reproducibility.

That is, in the transmission region corresponding to the colored film having a large area ratio, the area of the non-colored light emitting region occupying the region is small. When the non-colored light is emitted from both sides of the colored film in the direction, the emission width of the non-colored light is considerably narrowed, and is displayed by the colored light and the non-colored light emitted from the transmission region. The effect of raising the brightness of the color pixel cannot be sufficiently exhibited, and the saturation of the color pixel becomes blackish.

However, as described above, the colored film having the area ratio larger than a predetermined value is formed by setting the width of the transparent region smaller than the width of the transmissive region in the row direction and at least the length of the transmissive region over the entire length in the column direction. It is formed in a shape having, from the transmission region corresponding to this colored film, so that non-colored light is emitted only from the region on the side of the colored film in the row direction,
The non-colored light is emitted with a sufficient width also from this transmission region, and the effect of raising the brightness of the color pixels is sufficiently exerted,
Color pixels with good saturation and brightness can be displayed.

When the non-colored light is emitted from both the side region of the colored film in the row direction and the side region of the colored film in the column direction, the width of the non-colored light emission region becomes considerably large. The transmission region where the effect of raising the brightness of the color pixel is not sufficiently exhibited due to the narrowing is a transmission region corresponding to the colored film having the area ratio of about 90% or more, and therefore, the area ratio is about 90% or more. Is formed in a shape having a width smaller than the width of the transmissive region in the row direction and a length at least over the entire length of the transmissive region in the column direction. From the transmissive region corresponding to the colored film, In the above, the non-colored light may be emitted only from the region on the side of the colored film.

On the other hand, the transmission region corresponding to the colored film having a small area ratio has a large area of the non-colored light emitting region occupied in the region. When the non-colored light is emitted only from the region on the side of the colored film in the row direction, the emission width of the non-colored light is too large, and the colored light and the non-colored light emitted from the transmission region are used. The saturation of the displayed color pixel becomes whitish.

However, as described above, the colored film having the small area ratio is formed by setting the width smaller than the width of the region between the extension portions of the compensation capacitor electrode and the length smaller than the column direction length of the transmission region. If the non-colored light is emitted from the side region of the colored film in the row direction and the side region of the colored film in the column direction in the row direction of the transmission region corresponding to the colored film, The emission width of the uncolored light from the transmissive region can be set to a range in which the effect of raising the brightness of the color pixel is sufficiently exerted and the saturation of the color pixel does not become whitish.

If color pixels having good saturation and brightness can be displayed in the transmission regions corresponding to the color films of any colors, the saturation and brightness of the color pixels of each color can be better balanced. Thus, a color image with better color reproducibility can be displayed.

The colored film having a large area ratio is provided with a gap between both side edges thereof and the extended portions of the compensation capacitance electrodes adjacent to the side edges, respectively, and corresponds to the colored film. More preferably, non-colored light is emitted from the region on both sides of the colored film in the row direction of the transmissive region. In this way, the light emitted from the transmissive region corresponding to the colored film having a large area ratio is formed. The saturation and brightness of the color pixels displayed by the emitted light can be further improved.

Further, the colored film having a large area ratio may be formed in a continuous stripe shape over a plurality of transmissive regions arranged in a row direction.
The colored film can be easily formed.

Further, the colored film having a small area ratio is formed between the both side edges and the extended portions of the compensation capacitance electrode adjacent to the side edges, and between the both end edges and the end edges thereof. It is preferable to provide a gap between the line portion of the compensation capacitor electrode and the light shielding film so that non-colored light is emitted from a region around the coloring film in a transmission region corresponding to the coloring film. More preferably, by doing so, the saturation and brightness of the color pixel displayed by the light emitted from the transmission region corresponding to the colored film having the small area ratio can be further improved.

On the other hand, the light-shielding film has a width covering an area extending from an edge of one pixel electrode adjacent in the column direction across the gate line to a line portion of the compensation capacitance electrode facing the other pixel electrode. It is preferable to form a region corresponding to a region between pixel electrodes adjacent to each other in the column direction with the gate line interposed therebetween, from the edge of the one pixel electrode to the edge of the other pixel electrode. The light is shielded from light over the line portion of the compensating capacitance electrode facing the portion to prevent light leakage from that region, and a color image with better contrast can be displayed.

The light-shielding film may correspond to a region between pixel electrodes adjacent in the column direction with the gate line interposed therebetween and an area between pixel electrodes adjacent in the row direction with the data line interposed therebetween. By doing so, the region corresponding to the light shielding film in the region between the pixel electrodes adjacent in the column direction and the row direction is set to a dark state,
The contrast of the displayed image can be further improved.

In this case, the portion of the light-shielding film corresponding to the region between the pixel electrodes adjacent to each other in the row direction with the data line interposed therebetween is narrower than the width of the extension of the compensation capacitance electrode, and It is preferable that the external light incident on a region not corresponding to the light-shielding film among regions between the pixel electrodes adjacent in the row direction is formed by the compensation capacitor. The light is reflected by the extended portion of the electrode and emitted to the front of the liquid crystal display element, and the brightness of the entire screen can be raised by the reflected light (non-colored light).

[0042]

1 to 5 show a first embodiment of the present invention. FIG. 1 is a front view of a part of a liquid crystal display device, and FIG. 2 is an enlarged sectional view taken along line II-II of FIG. , And FIG.
FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is an enlarged sectional view taken along line VV in FIG.

FIGS. 2 to 5 show the liquid crystal display device of this embodiment.
As shown in FIG. 1, an active matrix type liquid crystal display element 1 for displaying a color image and an illuminating means 2 provided behind the liquid crystal display element 1 and having a light reflecting function.
And 4.

The active matrix liquid crystal display element 1 uses a TFT (thin film transistor) as an active element. As shown in FIGS.
A matrix is arranged on the inner surface of the rear substrate 3 in a row direction (horizontal direction of the screen) and a column direction (vertical direction of the screen) among a pair of transparent substrates 2 and 3 on the front side and the rear side opposed to each other with 1 therebetween. And a plurality of TFTs 5 connected to the pixel electrodes 4 respectively.
A plurality of gate lines 11 for supplying a gate signal to each of the TFTs 5 in each row, a data line 12 for supplying a data signal to each of the TFTs 5 in each column, and an insulating film (a gate insulating film of the TFT 4) A compensation capacitance electrode 13 that forms a compensation capacitance between the pixel electrode 4 and the pixel electrode 4 is provided to face each other with the film 7 interposed therebetween.

As shown in FIG. 1, the TFT 5 includes a gate electrode 6 formed on the inner surface of the rear substrate 3, a gate insulating film 7 covering the gate electrode 6, Formed at a position facing the gate electrode 6
N-type semiconductor film 8 and n
It comprises a source electrode 9 and a drain electrode 10 formed via a mold semiconductor film (not shown).

The gate lines 11 are arranged on the inner surface of the rear substrate 3 along one side of each pixel electrode row, and the gate electrodes 6 of the TFTs 5 in each row correspond to the row. It is formed integrally with the gate line 11.
The gate insulating film (transparent film) 7 of the TFT 5 is formed over almost the entire surface of the substrate 3, and the gate line 11 is formed on the gate insulating film 7 except for the terminal portion.
Covered with.

The data line 12 is wired on the gate insulating film 7 along one side of each pixel electrode column, and the drain electrode 1 of the TFT 5 in each column is provided.
0 is connected to the data line 12 corresponding to the column.

In this embodiment, the data line 12 is wired on the gate insulating film 7, and the drain electrodes 10 of the TFTs 5 in each column are formed integrally with the data line 12 corresponding to that column. , The data line 12
Means that the TFT 5 is covered with an interlayer insulating film and wired thereon, and the TFT 5 is inserted into a contact hole provided in the interlayer insulating film.
5 may be connected to the drain electrode 10.

The pixel electrodes 4 are formed on the gate insulating film 7, and these pixel electrodes 4 are connected to the source electrodes 9 of the corresponding TFTs 5 at one side edge. .

The compensating capacitance electrode 13 is formed on the inner surface of the substrate 3 so as to correspond to each of the pixel electrode rows. The gate insulating film 7 forms a compensation capacitance for compensating the fluctuation of the potential of the pixel electrode 4 during the non-selection period.

The compensation capacitance electrode 13 has a line portion 13a facing one edge of the pixel electrodes 3 arranged in the row direction,
The line portion 13a is extended to a region between the pixel electrodes 4 and 4 adjacent in the row direction with the data line 12 interposed therebetween, and the side edges of the pixel electrodes 4 and 4 adjacent in the row direction at both side edges. The compensation capacitance is formed corresponding to three edges of one end and both sides of each pixel electrode 4.

The line portion 1 of the compensation capacitance electrode 13
3a is formed substantially parallel to the gate line 11 so as to face an edge of the pixel electrode 4 opposite to the TFT connection side, and an extension 13b is provided at an end of the pixel electrode 4 on the TFT connection side. Over the length approaching the vicinity, the both side edges are formed to have a width facing the respective side edges of the pixel electrodes 4 and 4 adjacent in the row direction. It faces the region of the most length of the region between the electrodes 4, 4 over its entire width.

The compensating capacitance electrode 13 is formed of a metal film having a low resistance and a high light reflectance such as an aluminum alloy, and the gate line 11 is formed of the same metal film as the compensating capacitance electrode 13. ing. The surfaces of the compensation capacitance electrode 13 and the gate line 11 are anodized to increase the dielectric strength between the pixel electrode 4 and the data line 12 formed on the gate insulating film 7. The data line 12 is made of a metal film having a low resistance and a high light reflectance, such as an aluminum alloy, similarly to the compensation capacitance electrode 13.

Although not shown in FIG. 1, a transparent overcoat insulating film 14 covering the TFT 5 and the data lines 12 is formed on the inner surface of the rear substrate 3 as shown in FIGS. The alignment film 15 is provided on the entire arrangement region of the pixel electrodes 4.

On the other hand, the gate line 1 of the region between the plurality of pixel electrodes 4
Light-shielding films 16 corresponding to regions between pixel electrodes 4 and 4 adjacent to each other in the column direction with 1 interposed therebetween are provided. In FIG. 1, in order to easily distinguish the light shielding film 16,
The shaded portions are shaded in parallel.

The light-shielding film 16 is made of, for example, a dark-colored metal film such as chromium. The light-shielding film 16 is formed from the edge of one of the pixel electrodes 4 adjacent to each other in the column direction with the gate line 11 interposed therebetween. An extension 13b of the compensation capacitance electrode 13 formed on the inner surface of the rear substrate 3 is formed to have a width covering a region extending over the line portion 13a of the compensation capacitance electrode 13 facing the other pixel electrode 4. This corresponds to the entire region without the light-shielding film 16.

In this embodiment, one side edge (upper edge in FIG. 1) of the light shielding film 16 is opposed to the edge of the one pixel electrode 4 and the other side edge (in FIG. 1). Lower edge)
Is one side portion of the line portion 13a of the compensation capacitor electrode 13 facing the other pixel electrode 4 (the side portion on the edge side of the pixel electrode 4).
Therefore, the other side portion of the line portion 13 a of the compensation capacitor electrode 13 (the center side portion of the pixel electrode 4) is not covered with the light shielding film 16.

On the inner surface of the front substrate 2, a plurality of colored films having different transmission wavelength bands, for example, three color filters 17R, 17G and 17B of red, green and blue are provided with the plurality of pixels. They are provided alternately in the row direction so as to correspond to the electrodes 4 respectively. In FIG. 1, a dot pattern is provided on the color filter portion to make it easy to distinguish the color filters 17R, 17G, and 17B.

The color filters 17R, 17G,
17B is covered with a transparent protective insulating film 18 provided on almost the entire front substrate 2 thereon,
On this protective insulating film 18, a single-layer transparent opposing electrode 19 facing all of the pixel electrodes 4 is provided, on which an alignment film 20 is formed. The protective insulating film 18 can be omitted by properly selecting the materials of the color filters 17R, 17G, 17B.

The pair of substrates 2 and 3 on the front side and the back side
Is joined at its peripheral portion via a frame-shaped sealing material (not shown), and a liquid crystal layer 21 is provided between the substrates 2 and 3 in a region surrounded by the sealing material.

The liquid crystal display element 1 is of the TN type, and the liquid crystal molecules of the liquid crystal layer 21 provided between the pair of substrates 2 and 3 are composed of the alignment film 21 of the front substrate 2 and the rear substrate 3.
The orientation direction in the vicinity of each of the substrates 2 and 3 is regulated by the orientation film 15, and the substrates 2 and 3 are twist-oriented at a predetermined twist angle (for example, approximately 90 °). Polarizing plates 22 and 23 are disposed on the outer surfaces of the substrates 2 and 3, respectively, with their transmission axes directed in predetermined directions.

In the area corresponding to each of the plurality of pixel electrodes 4 of the liquid crystal display element 1, the area surrounded by the line portion 13a and the extension 13b of the compensation capacitance electrode 13 and the light shielding film 16 is Each of the plurality of light-transmitting regions A is a plurality of transmission areas A for emitting illumination light (illumination light from the illumination means 24) incident from the rear side and external light which is incident from the front and reflected by the illumination means 24, and is emitted forward. A region corresponding to at least the extension 13b of the compensation capacitance electrode 13 formed of a metal film having a high reflectance is a reflection region in which external light incident from the front is reflected by the compensation capacitance electrode 13 and emitted forward. S.

The data line 12 provided on the inner surface of the rear substrate 3 of the liquid crystal display element 1 passes through the reflection area S. The data line 12 is also formed of a metal film having a high light reflectance. Therefore, of the light incident on the reflection area S, the light incident on the portion corresponding to the data line 12 is reflected by the data line 12 and emitted forward.

In this embodiment, as described above, one side edge of the light shielding film 16 faces the edge of one of the pixel electrodes 4 adjacent to each other in the column direction with the gate line 11 interposed therebetween. Since the other side edge portion is formed to have a width opposite to one side portion of the line portion 13a of the compensation capacitance electrode 13 facing the other pixel electrode 4, the line portion 13a of the compensation capacitance electrode 13 is formed.
The area corresponding to the other side (the center side of the pixel electrode 4) not covered by the light-shielding film 16 also reflects external light incident from the front by the compensation capacitor electrode 13 and is emitted forward. This is the area S.

Further, the liquid crystal display element 1 is of a normally white mode, in which the twist angle of the liquid crystal molecules of the liquid crystal layer 21 and the alignment direction near the pair of substrates 2 and 3 and the transmission of the front side polarizing plate 22. The direction of the axis is such that, of the light incident from the front of the liquid crystal display element 1, the transmittance of the light reflected by the compensation capacitance electrode 13 on the inner surface of the rear substrate 3 and emitted to the front surface of the liquid crystal display element 1 is equal to the liquid crystal. When the molecules are in the initial twisted state in which the molecules are most inclined with respect to the surfaces of the substrates 2 and 3, they are set to be substantially maximum. The illumination light that enters the liquid crystal display element 1 from the back side and exits forward, and the illumination light that enters from the front of the liquid crystal display element 1 and is reflected by the illumination means 24 and exits forward according to the direction of the transmission axis. External light transmittance of the liquid crystal molecules is set to be lower along with to the orientation from the initial twist alignment states to rise with respect to the substrate 2 surface.

The front substrate 2 of the liquid crystal display element 1
The color filters 17R, 17G, and 17B of the three colors of red, green, and blue provided on the inner surface of the multi-layer structure are respectively surrounded by the line portion 13a and the extension portion 13b of the compensation capacitance electrode 13 and the light-shielding film 16. Is formed in an area smaller than the area of the transmission region A.

For this reason, the liquid crystal display element 1 has the color filters 17 R, 17 G, 17
A region corresponding to B (hereinafter, referred to as a filter corresponding region) a
Emits red, green, and blue colored lights colored in the colors of the color filters 17R, 17G, and 17B, respectively, and is uncolored from regions b (hereinafter, referred to as non-filter regions) b that do not correspond to the color filters 17R, 17G, and 17B. Light is emitted, and non-colored light reflected by the compensation capacitance electrode 13 is emitted from the reflection area S corresponding to at least the extension 13b of the compensation capacitance electrode 13.

Further, the color filters 17R, 17G, and 17B of the three colors of red, green, and blue have different transmission wavelength bands, and the red filter 17R, which is a color film of the first color, has a visible light band. , The green filter 17G, which is a colored film of the second color, transmits light of the wavelength component of the intermediate wavelength band, and the blue filter 17B, which is a colored film of the third color, Transmits light of a wavelength component in a short wavelength band.

For this reason, in this embodiment, the red filter 17R for transmitting the light of the wavelength component in the long wavelength band is formed in an area larger than the area of the filters 17G and 17B of the other two colors. Of the filters 17G and 17B, the green filter 17G that transmits light of the wavelength component in the intermediate wavelength band is formed in an area smaller than the area of the blue filter 17B that transmits light of the wavelength component in the short wavelength band.

The color filters 17R, 17G,
17B, the red filter 17R has an area of 90 to 95% of the area of the transmission area A, the green filter 17G has an area of 70 to 80% of the area of the transmission area A, and the blue filter 17B has the area of the transmission area A. 85-90% of the area of
It is preferable to form in the area of.

In this embodiment, the red filter 17R
Is formed in an area of 90% of the area of the transmission area A, the green filter 17G is formed in an area of 70% of the area of the transmission area A, and the blue filter 17B is formed in 85% of the area of the transmission area A. Area.

Each of the plurality of pixel electrodes 4 and the light-transmitting regions A is formed in a rectangular shape having a width in the column direction larger than the width in the row direction. The pitch of A is set small.

Then, of the red, green, and blue color filters 17R, 17G, and 17B, the color filter whose area ratio to the transmission region A is larger than a predetermined value, that is, the area ratio to the transmission region A is 90% The red filter 17R described above is formed in a shape having a width smaller than the width of the transmission region A in the row direction and a length at least over the entire length of the transmission region A in the column direction, and has a smaller area ratio. Green and blue filters 17G, 17
B is formed in a shape having a width smaller than the width of the region between the extension portions 13b of the compensation capacitance electrode 13 and a length smaller than the length of the transmission region A in the column direction.

Further, the red filter 17R is provided with a gap between both side edges thereof and the extension 13b of the compensation capacitance electrode 13 adjacent to these side edges, respectively. Red filter 17R
Is a non-filter area b on both sides of the red filter 17R in the row direction, and non-colored light is emitted from the non-filter areas b on both sides.

Each of the green filter 17G and the blue filter 17B has an extended portion 13 of the compensation capacitor electrode 13 adjacent to both side edges thereof and the side edges thereof.
b, and between the both edges and the line portion 13a of the compensation capacitor electrode 13 and the light-shielding film 16 which are adjacent to these edges, respectively. The transmission region A corresponding to the filter 17G and the blue filter 17B is a region around the color filters 17G and 17B, that is, the transmission region A.
Of the color filters 17G and 17B in the row direction and the color filters 17 in the column direction on both sides.
The side regions on both ends of G and 17B are non-filter regions b, and uncolored light is emitted from the non-filter regions b around the filters.

Next, the illuminating means 24 disposed behind the liquid crystal display element 1 will be described. The illuminating means 24 used in this embodiment emits illuminating light as shown in FIGS. The transflective plate 26 is arranged on the front surface of the lighting panel 25.

The illuminating panel 25 is, for example, a so-called side light type. At least one end surface is a light incident surface, and the front surface is a transparent resin made of an acrylic resin or the like having a light emitting surface taken in from the end surface. A light guide plate 25a,
The light guide plate 25a includes a light source (not shown) (a straight tube fluorescent lamp, an LED array in which a plurality of light-emitting diodes are arranged, etc.) arranged opposite to the end face, and the transflective plate 26 is It is arranged on the front surface of the light guide plate 25a.

This liquid crystal display device performs reflection type display using external light without emitting illumination light from the illumination means 24 when external light of sufficient brightness is obtained, and the brightness of the external light is reduced. When there is a shortage, the illumination means 24 emits illumination light to compensate for screen brightness, and is a two-way display type.
In an environment where external light can be obtained, among the external light incident on the liquid crystal display element 1 from the front thereof, the compensation capacitance electrode 13 and the light shielding film 16 in the regions respectively corresponding to the plurality of pixel electrodes 4 are formed. Incident on a plurality of transmissive regions A surrounded by
Is reflected by the transflective plate 26 on the front surface of the illuminating means 24 disposed on the back side of the liquid crystal display device 1, and the reflected light is transmitted through each transmission area A of the liquid crystal display device 1 and emitted to the front of the liquid crystal display device 1. At the same time, the light incident on the reflection area S corresponding to the compensation capacitance electrode 13 is reflected by the compensation capacitance electrode 13 on the inner surface of the rear substrate 3 of the liquid crystal display element 1, and the reflected light is directed forward of the liquid crystal display element 1. Out.

Incidentally, of the light incident on the reflection area S, the light incident on the portion corresponding to the data line 12 provided on the inner surface of the rear substrate 3 of the liquid crystal display element 1 is the data line as described above. The light is reflected by the light 12 and emitted forward.

When the illuminating light is emitted from the illuminating means 24, the illuminating light is incident on the liquid crystal display element 1 from the back thereof, and of the illuminating light, the compensation capacitance electrode 13
The light incident on the region corresponding to the light-shielding film 16 is shielded by the compensation capacitor electrode 13 and the light-shielding film 16, and only the light incident on the transmission region A is transmitted through the transmission region A and passes through the liquid crystal display element 1. Exits in front of.

In this liquid crystal display device, the red,
Since the color filters 17R, 17G, and 17B for the three colors of green and blue are each formed in an area smaller than the area of the transmission region A, the illumination means can be used even when performing reflective display using external light. Also, when illuminating light is emitted from 24 to compensate for screen luminance, the color filters 17R, 17R,
The light of the wavelength component in the absorption wavelength band is absorbed by the color filters 17R, 17G, 17B.
B colored light (color filters 17R, 17R)
G, 17B of the wavelength component in the transmission wavelength band) is emitted,
Non-colored light that is not absorbed by the color filters 17R, 17G, 17B is emitted from the non-filter areas b of the plurality of transmission areas A, respectively.

To the human eye observing the display of the liquid crystal display device, the colored light emitted from the filter corresponding area a of the transmission area A and the uncolored light emitted from the unfiltered area b are mixed. appear.

For this reason, red displayed by the light emitted from the plurality of transmission areas A of the liquid crystal display element 1,
The color pixels of green and blue are colored in the colors of the color filters 17R, 17G, and 17B corresponding to the transmissive area A, and the brightness is adjusted by the color filters 17R and 17B.
These pixels are raised by non-colored light that does not decrease in luminance due to absorption at 17G and 17B.

The intensity of the colored light and the uncolored light emitted from the filter corresponding region a and the non-filter region b of the plurality of transmission regions A is determined by the driving electric field applied between the pixel electrode 4 and the counter electrode 19. , The brightness of the red, green, and blue color pixels displayed by the light emitted from the plurality of transmissive regions A changes. , A full-color image is displayed.

Therefore, when performing a reflective display using external light, or when making up the screen brightness by emitting illumination light from the illumination means 24, the entire area of the transmission area A is colored by a color filter. A much brighter color image can be displayed as compared with the case of emitting colored light.

Further, in this liquid crystal display device, the compensating capacitance electrode 13 is formed of a metal film having a high light reflectance and a line portion 13a opposed to one edge of the pixel electrodes 4 arranged in the row direction. It extends from the line portion 13a to the region between the pixel electrodes 4 and 4 adjacent to each other in the row direction with the data line 12 interposed therebetween, and opposes the side edges of the pixel electrodes 4 and 4 adjacent to each other in the row direction at both side edges. Extension 1 to do
3b, of the external light incident on the liquid crystal display element 1 from the front thereof, the light incident on the reflection area S corresponding to at least the extension 13b of the compensation capacitance electrode 13 Then, the light is reflected by the compensation capacitance electrode 13 on the inner surface of the rear substrate 3 and is emitted to the front of the liquid crystal display element 1 as a non-colored light having no luminance reduction due to absorption by the color filters 17R, 17G, 17B.

The light is emitted from a region of the reflection region S corresponding to the compensation capacitor electrode 13 facing the edge of the pixel electrode 4 (a region corresponding to both side edges of the extension 13b of the compensation capacitor electrode 13). The intensity of the non-colored light changes according to a change in the alignment state of the liquid crystal molecules due to a driving electric field applied between the pixel electrode 4 and the counter electrode 19.

However, the inter-pixel area of the reflection area S corresponding to the area between the adjacent pixel electrodes 4 and 4, that is, the area where the driving electric field applied between the pixel electrode 4 and the counter electrode 19 does not act. Since the alignment state of the liquid crystal molecules hardly changes from the initial alignment state, the reflectance of external light incident on the inter-pixel region of the reflection region S is always kept high.

Therefore, the brightness of the screen at the time of the reflection type display using the external light depends on the color pixels of each color displayed by the light (colored light and non-colored light) respectively emitted from the plurality of transmission areas A. The brightness is much brighter than the case where colored light colored by a color filter is emitted from the entire area of the transmission area A, and the non-colored reflection emitted from the reflection area S corresponding to the compensation capacitance electrode 13. This is enough brightness that the brightness of the entire screen is raised by light.

Therefore, according to this liquid crystal display device,
In order to improve the brightness of the screen by the reflective display and to supplement the screen brightness, the frequency of emitting the illuminating light from the illuminating unit 24 can be reduced to reduce the power consumption.

Further, in this liquid crystal display device, when the brightness of the external light is insufficient, the illumination means 24 emits illumination light to supplement the screen brightness.
Since the light incident on the area corresponding to the compensation capacitance electrode 13 and the light shielding film 16 is shielded by the compensation capacitance electrode 13 and the light shielding film 16, the illumination light is emitted from the illumination means 24. However, a region between the pixel electrodes 4 and 4 adjacent to each other in the row direction with the data line 12 interposed therebetween (a region corresponding to the extension 13b of the compensation capacitance electrode 13).
Is only reflected light of external light incident from the front of the liquid crystal display element 1, and therefore,
When the illumination light is emitted from the
The region between the pixel electrodes 4 and 4 adjacent to each other in the row direction with the space therebetween is not too bright, and the contrast of the displayed image does not decrease.

Further, the light shielding film 16 provided on the inner surface of the front substrate 2 of the liquid crystal display element 1 sandwiches at least the gate line in the region between the plurality of pixel electrodes 4. Since the area between the pixel electrodes corresponding to the pixel electrodes 4 and 4 adjacent in the column direction corresponds to the area between the pixel electrodes corresponding to the light-shielding film 16, even when performing the reflective display using external light, When the illumination light is emitted from the means to compensate for the screen luminance, the screen is in a dark state, whereby the contrast of the displayed image can be improved.

In this embodiment, the light shielding film 16 is used.
Is formed to have a width covering an area extending from the edge of one pixel electrode 4 adjacent to the pixel electrode 4 in the column direction across the gate line 11 to the line portion 13a of the compensation capacitor electrode 13 facing the other pixel electrode 4. The region corresponding to the pixel electrodes 4 and 4 adjacent to each other in the column direction with the gate line 11 interposed therebetween is moved from the edge of the one pixel electrode 4 to the other pixel electrode 4.
The light is shielded from light over the line portion 13a of the compensation capacitor electrode 13 facing the edge of the light-emitting device, thereby eliminating a light leak from the region and displaying a color image with higher contrast.

Further, in the above embodiment, the red,
Green, blue color filters 17R, 17G, 17B
Red filter 17 that transmits light in a long wavelength band
R is formed in an area larger than the area of the other two color filters (green filter and blue filter) 17G and 17B, and the other two color filters 1 are formed.
Since the green filter 17G of the 7G and 17B colored films that transmits light of the intermediate wavelength band is formed in an area smaller than the area of the blue filter 17B that transmits light of the short and long wavelength bands, the plurality of transmission filters are formed. The saturation and brightness of the color pixels of each color displayed by the colored light and the non-colored light emitted from the region A are balanced, and a color image with good color reproducibility can be displayed.

That is, in general, the color filter tends to be thinner. If the color filter is thinner, the absorption of light by the color filter can be reduced and the intensity of the emitted colored light can be increased. If the thickness of the color filter is reduced, the average transmittance of the red, green, and blue color filters shifts, and the color balance of light of each color transmitted through these color filters deteriorates.
Since the display color due to the additive mixture of red, green, and blue light approaches cyan (bluish green), good white display cannot be obtained.

However, if the red, green, and blue color filters 17R, 17G, and 17B are different from each other as described above as in this embodiment, the color light emitted from each transmissive area A and the non-colored light can be mixed. Since the saturation and brightness of the color pixels determined by the light amount ratio can be adjusted for each of the red, green, and blue colors, the average transmission of the color filters 17R, 17G, and 17B of each color when the color filters are thinned. It is possible to compensate for the deterioration of the color balance of the red, green, and blue colored light due to the shift of the rate, and therefore, the color pixels of the respective colors displayed by the colored light and the non-colored light respectively emitted from the transmission areas A can be compensated. A color image with good reproducibility can be displayed by balancing saturation and brightness.

Further, in the above embodiment, of the three color filters 17R, 17G and 17B of the three colors red, green and blue, the red filter 17R transmitting the light in the long wavelength band is replaced with the color filter 17G of the other two colors. , 17B are formed in an area larger than the area of the other two color filters 17B.
The green filter 17G that transmits light in the intermediate wavelength band of G and 17B is formed in an area smaller than the area of the blue filter 17B that transmits light in the short wavelength band. The saturation and brightness of the three color pixels of red, green and blue displayed by the emitted colored color and the uncolored light are well balanced, and a color image with better color reproducibility can be displayed. .

As described above, the red, green, and blue color filters 17R, 17G, and 17B use the red filter 17R in an area of 90 to 95% of the area of the transmission area A and the green filter 17G in the transmission area A. The area of 70% to 80% of the area of the blue filter 17B is set to 8
It is preferable to form the red filter 17R in the area of 9 to 90% of the area of the transmission region A as described above.
The green filter 17G is formed in the transmission area A
If the blue filter 17B is formed to have an area that is 85% of the area of the transmission region A, then the red,
A color image with good color reproducibility and a good balance between saturation and brightness of the green and blue color pixels can be displayed.

Further, in the above embodiment, each of the plurality of pixel electrodes 4 and the light-transmitting region A is formed in a rectangular shape having a width in the column direction larger than a width in the row direction.
Since the pitch of the plurality of transmission regions A arranged in the row direction is set to be small, the red, green, and blue colored lights are alternately emitted from the plurality of transmission regions A arranged in the row direction at a small pitch, and the red, green, and blue colored lights are alternately emitted. It is possible to improve color mixing and display a high-resolution color image.

In the above embodiment, the red color corresponding to the plurality of transparent regions A formed in the rectangular shape,
Green, blue color filters 17R, 17G, 17B
Among them, the red filter 17R colored film whose area ratio to the transmission region A is larger than a predetermined value is
Formed in a shape having a width smaller than the width in the row direction and a length at least over the entire length in the column direction of the transmission region A,
Green and blue filters 17 having an area ratio smaller than that
G, 17B are formed in a shape having a width smaller than the width of the region between the extension portions 13b of the compensation capacitance electrode 13 and a length smaller than the length of the transmission region A in the column direction, thereby obtaining the area ratio. The non-colored light is emitted from a region on the side of the filter 17R in the row direction of the transmission region A corresponding to the red filter 17R having a large area, and the transmission regions A corresponding to the green and blue filters 17G and 17B having the small area ratio. Filter 17G, 1 in the row direction of
7B in the lateral region and column direction
It is preferable that the non-colored light is emitted from the side regions of 7G and 17B. In this manner, each color displayed by the colored light and the non-colored light respectively emitted from the plurality of transmission regions A. , The saturation and brightness of the color pixels can be better balanced, and a color image with better color reproducibility can be displayed.

That is, the transmission area A corresponding to the red filter 17R having a large area ratio is the area of the non-colored light emission area occupying the area A (the area of the non-filter area b).
Since the non-colored light is emitted from both the side area of the filter 17R and the side area of the filter 17R in the column direction in the transmission area A, the emission width of the non-colored light is reduced. The color pixel becomes considerably narrow, and the effect of raising the brightness of the color pixel displayed by the colored light and the non-colored light emitted from the transmission region A cannot be sufficiently exerted, so that the saturation of the color pixel becomes dark.

However, as described above, the red filter 17R having the area ratio larger than the predetermined value is provided with a width smaller than the width of the transmission region A in the row direction and at least over the entire length of the transmission region A in the column direction. If the non-colored light is emitted only from the side area of the filter 17R in the row direction from the transmission area A corresponding to the red filter 17R, the transmission area A is formed. Therefore, non-colored light can be emitted with a sufficient width, and the effect of raising the brightness of the color pixels can be sufficiently exerted, so that color pixels with good saturation and brightness can be displayed.

When the non-colored light is emitted from both the side region of the color filter in the row direction and the side region of the color filter in the column direction, the width of the emission region of the non-colored light is considerably reduced. Area A where the effect of raising the brightness of the color pixels is not sufficiently exhibited.
Is a transmission region corresponding to a color filter having the area ratio of about 90% or more.

Therefore, as described above, the red filter 1
7R is formed in an area of 90% of the area of the transmission area A, the green filter 17G is formed in an area of 70% of the area of the transmission area A, and the blue filter 17B is formed in 85% of the area of the transmission area A.
When the red filter 17R having the area ratio of about 90% or more is formed, the width of the red filter 17R is smaller than the width of the transmissive region A in the row direction and at least the length of the transmissive region A over the entire length in the column direction. May be formed so that non-colored light is emitted only from a region on the side of the filter 17R in the row direction from the transmission region A corresponding to the red filter 17R.

On the other hand, the transmission regions A corresponding to the green and blue filters 17G and 17B having the small area ratios, respectively.
Since the area of the non-colored light emitting area occupying in the area A (the area of the non-filter area b) is large, like the transmission area corresponding to the red filter 17R having the large area ratio,
If the non-colored light is emitted only from the side region in the row direction, the emission width of the non-colored light becomes too wide, and the color displayed by the colored light emitted from the transmission region A and the non-colored light Pixel saturation becomes whitish.

However, as described above, the green and blue filters 17G and 17B having a small area ratio are
Each of the green and blue filters 17G and 17B is formed in a shape having a width smaller than the width of the region between the extension portions 13b of the compensation capacitance electrode 13 and a length smaller than the length in the column direction of the transmission region A. If non-colored light is emitted from the corresponding region on the side of the filters 17G and 17B in the row direction of the transmission region A and the region on the side of the filters 17G and 17B in the column direction, the transmission region A The emission width of the non-colored light can be set in a range that sufficiently increases the brightness of the color pixels and does not cause the saturation of the color pixels to be whitish.

Then, the color filter 17 of any color
If color pixels having good saturation and brightness can be displayed even in the transmission area A corresponding to R, 17G, and 17B, the saturation and brightness of the color pixels of each color can be better balanced, and the color reproducibility can be improved. A good color image can be displayed.

Note that the red filter 1 having a large area ratio is used.
The transmission region A corresponding to the red filter 17R
The non-colored light may be emitted only from one of the regions on both sides of the red filter 17R. However, as in the above-described embodiment, the red filter 17R may be provided with both side edges and a compensation line adjacent to these side edges. A gap is provided between the capacitor electrode 13 and the extension 13b so that non-colored light is emitted from the region on both sides of the filter 17R in the row direction of the transmission region A corresponding to the red filter 17R. By doing so, the saturation and brightness of the color pixels displayed by the light emitted from the transmission region A corresponding to the red filter 17R can be further improved.

The transmission regions A corresponding to the green and blue filters 17G and 17B having a small area ratio are each one of the regions on both sides of the green and blue filters 17G and 17B and the regions on both ends. However, as in the above embodiment, the green and blue filters 17G and 17B are adjacent to the both side edges and the side edges, respectively. A gap is provided between the extended portion of the compensating capacitor electrode 13 and between both end edges and the line portion 13a of the compensating capacitor electrode 13 and the light shielding film 16 which are respectively adjacent to these edges. Uncolored light is emitted from a region around the filters 17G and 17B in the transmission region A corresponding to the green and blue filters 17G and 17B. More preferably that, by doing so, the green and the blue filter 17G, 1
The saturation and brightness of the color pixel displayed by the light emitted from the transmission region A corresponding to 7B can be further improved.

In the above embodiment, the red filter 17R for transmitting the light in the long wavelength band is set to the area 9 of the transmission area A.
A green filter 17G formed in an area of 0% and transmitting light in an intermediate wavelength band is formed in an area of 70% of the area of the transmission region A, and a blue filter 17G transmitting light in a short wavelength band.
B is formed to have an area of 85% of the area of the transmission region A. A preferable area ratio of the color filters 17R, 17G, and 17B to the transmission region A is 90 to 95 for the red filter 17R as described above. %, 70-80% with the green filter 17G, 85-9 with the blue filter 17B
For example, the red filter 17R is formed in an area of 95% of the area of the transmission area A, the green filter 17G is formed in an area of 80% of the area of the transmission area A, and the blue filter 17B is formed in the transmission area A. Even if it is formed in an area of 90% of the area, it is possible to display a color image with good color reproducibility and a good balance between the saturation and brightness of the red, green and blue color pixels.

As described above, when the non-colored light is emitted from both the side area of the color filter in the row direction and the side area of the color filter in the column direction, the emission area of the non-colored light is reduced. The transmission region where the width is so narrow that the effect of raising the brightness of the color pixels cannot be sufficiently exhibited is about 90% in area ratio with respect to the transmission region A.
%, The area ratio of the red filter 17R is set to 95 as described above.
%, The area ratio of the green filter 17G is 80%, and the area ratio of the blue filter 17B is 90%, the red filter 17R and the blue filter 17 have the area ratio of about 90% or more.
B is formed into a shape having a width smaller than the width of the transmission region A in the row direction and at least a length extending over the entire length of the transmission region A in the column direction, and the transmission corresponding to the red filter 17R and the blue filter 17B. From region A,
It is preferable that the non-colored light is emitted only from the region on the side of the filters 17R and 17B in the row direction.

In the above embodiment, the color filters 17R, 17G, and 17B of three colors of red, green, and blue are provided corresponding to the plurality of pixel electrodes 4 arranged in a matrix in the row direction and the column direction, respectively. However, among the color filters 17R, 17G, and 17B, the color filter having a large area ratio with respect to the transmission region A (the red filter 17R in the above embodiment) is continuous over the plurality of transmission regions A arranged in the row direction. It may be formed in a striped shape.

FIG. 6 is a front view of a part of a liquid crystal display device according to a second embodiment of the present invention.
Green, blue color filters 17R, 17G, 17B
Of these, the red filter 17R is formed in a continuous stripe shape over a plurality of transmission areas A arranged in the row direction.

In the liquid crystal display device of this embodiment, the red filter 17R is formed in a stripe shape.
The other configuration is the same as that of the liquid crystal display device of the first embodiment shown in FIGS. 1 to 5, and therefore, the same description will be omitted by attaching the same reference numerals to the drawings.

According to this embodiment, of the three color filters 17R, 17G, and 17B of red, green, and blue, the color filters having a large area ratio to the transmission region A, that is, the width of the transmission region A in the row direction. A red filter 17R formed in a shape having a small width and at least a length over the entire length of the transmission region A in the column direction is formed in a simple astripe shape continuous over a plurality of transmission regions A arranged in the row direction. Therefore, the red filter 17R can be easily formed.

FIGS. 7 and 8 show a third embodiment of the present invention. FIG. 7 is a front view of a part of a liquid crystal display device.
FIG. 8 is an enlarged sectional view taken along the line VIII-VIII in FIG.

In the liquid crystal display device of this embodiment, the light shielding film 16 provided on the inner surface of the front substrate 2 of the liquid crystal display element 1 is
A region provided between the pixel electrodes 4 and 4 adjacent in the column direction with the gate line 11 interposed therebetween and a region between the pixel electrodes 4 and 4 adjacent in the row direction with the data line 12 interposed therebetween. And the data line 12 of the light shielding film 16
The portion corresponding to the region between the pixel electrodes 4 and 4 adjacent to each other in the row direction is formed to have a width smaller than the width of the extension 13b of the compensation capacitance electrode 13 and to cover the entire width of the data line 12. ing.

In the liquid crystal display device of this embodiment, the light-shielding film 16 is provided so as to correspond to the region between the pixel electrodes 4 and 4 adjacent to each other in the row direction with the data line 12 interposed therebetween. The other configuration is the same as that of the liquid crystal display device of the first embodiment shown in FIGS. 1 to 5, and therefore, the same description will be omitted by attaching the same reference numerals to the drawings.

According to this embodiment, of the regions between the pixel electrodes 4 and 4 adjacent in the column direction and the row direction, the region corresponding to the light-shielding film 16 is set to a dark state, and the contrast of the displayed image is further improved. be able to.

In this embodiment, the light shielding film 16 is used.
The portion corresponding to the region between the pixel electrodes 4 and 4 adjacent to each other in the row direction with the data line 12 of
Is formed to have a width smaller than the width of the extended portion 13b and to cover the entire width of the data line 12, and thus does not correspond to the light shielding film 16 in the region between the pixel electrodes 4 and 4 adjacent in the row direction. The external light incident on the area is
The reflected light (non-colored light) is reflected by the extension portion 13b of the liquid crystal display element 1 and emitted to the front of the liquid crystal display element 1, and the brightness of the entire screen can be raised by the reflected light (non-colored light).

In the liquid crystal display element 1 used in each of the above embodiments, the compensation capacitance electrode 13 is provided separately from the gate line 11 to form a compensation capacitance of a so-called storage capacitance type. The capacitance may be a so-called additional capacitance type in which the compensation capacitance electrode 13 is an electrode integrated with the gate line 11.

In the liquid crystal display element 1, transmission regions A for displaying red, green, and blue color pixels are alternately arranged linearly in a row direction, and color pixels of the same color are arranged in a column direction. Is a type in which the transmission areas A for displaying are arranged linearly. In the liquid crystal display element 1, the pixel electrodes and the color filters of each color are arranged in a row direction by red, green and blue color pixels. Transparent areas A for display are alternately arranged linearly in a line, and transmissive areas A for displaying color pixels of the same color are alternately shifted in the row direction by about 1.5 pitches in the column direction in a zigzag manner. A so-called delta arrangement (also called mosaic arrangement) type may be used.

Further, in the above embodiment, the liquid crystal display element 1
As the illuminating means 24 disposed behind the side panel, a translucent reflecting plate 26 is disposed on the front surface of a sidelight type illuminating panel 25. 9-353603, Japanese Patent Application No. 10-
As described in the specification and drawings of No. 120978, a light guide having a front surface formed in a stepped surface and a reflective film formed on each of the plurality of step surfaces is used to guide illumination light from a light source. It is also possible to use a configuration in which light is taken from the end face of the light body, emitted from the plurality of step surfaces of the step-shaped surface, and external light incident from the front is reflected by the reflective films on the plurality of step surfaces of the step-shaped surface. Good.

The illuminating means of this configuration theoretically emits 100% of the light from the light source and 100% of the incident light from the front.
For reflection, if this illumination means is used, the light emission luminance of the light source is set to be relatively low, the power consumption is further reduced, and the reflection type display using the external light is more than the liquid crystal display device of the above embodiment. It can be made even brighter.

Further, the liquid crystal display element 1 used in the above embodiment is provided with three color filters 17R, 17G and 17B of red, green and blue as colored films. For example, color filters of three colors of magenta, yellow, and cyan may be provided, and the colored film may be provided on the inner surface of the rear substrate 3 of the liquid crystal display element 1.

[0126]

The liquid crystal display device according to the present invention is provided with an active matrix type liquid crystal display device, and is disposed behind the liquid crystal display device, emits illumination light toward the liquid crystal display device, and further comprises the liquid crystal display device. Illumination means for reflecting external light incident from the front of the liquid crystal display element toward the liquid crystal display element, wherein the compensation capacitance electrode provided on the inner surface of the rear substrate of the liquid crystal display element is formed of a metal film having a high light reflectance. Accordingly, a line portion facing one edge of the pixel electrode arranged in the row direction, and a line extending from this line portion to a region between the pixel electrodes adjacent to each other in the row direction with a data line interposed therebetween, and a row is formed at both side edges thereof. A plurality of pixel electrodes that are adjacent to each other in the direction, and have an extension that is opposed to a side edge of the pixel electrode. A region surrounded by a light-shielding film provided on the inner surface of the front substrate in correspondence with at least a region between pixel electrodes adjacent to each other in the column direction across the gate line in a region between pixel electrodes. Each of the illumination light incident from the back side and a plurality of transmission regions that emit the external light incident from the front and reflected by the illumination means and emits the front, and a region corresponding to at least the extension of the compensation capacitance electrode, A plurality of colored films provided on the inner surface of one of the plurality of colors corresponding to the plurality of pixel electrodes, respectively, while reflecting external light incident from the front by the compensation capacitance electrode to serve as a reflection region to be emitted forward. Is smaller than the area of the transmissive region, and the colored light is emitted from the region of the plurality of transmissive regions corresponding to the colored film, and the region not corresponding to the colored film. Uncolored light emitted respectively, for non-colored light reflected by the compensation capacitor electrode from said reflective region corresponding to at least the extension portion of the compensation capacitor electrode is obtained so as to emit,
In order to improve the brightness of the screen by the reflection type display, reduce the frequency of emitting the illuminating light from the illuminating means to reduce the power consumption, and to reduce the power consumption, and to provide a color image with a sufficient brightness and a good contrast to supplement the screen brightness. Can be displayed.

[0127] In the liquid crystal display device of the present invention, the colored films of the plurality of colors include a colored film of a first color that transmits light in a long wavelength band of a visible light band and a wavelength component of an intermediate wavelength band. In the case of a three-color coloring film of a second-color coloring film that transmits light and a third-color coloring film that transmits light of a wavelength component in a short wavelength band, the first color is used. Membrane 2
The second colored film of the other two colored films is formed in an area larger than the area of the colored film of the third color.
It is preferable that the color pixel is formed in an area smaller than the area of the colored film of the color, and by doing so, the color pixel of each color displayed by the colored light and the non-colored light respectively emitted from the plurality of transmission regions. A color image with good color reproducibility can be displayed by balancing saturation and brightness.

In this case, for example, the color film of the first color is a red filter, the color film of the second color is a green filter,
When the colored film of the third color is a blue filter, the red filter is formed in an area of 90 to 95% of the area of the transmission region, and the green filter is formed in an area of 70 to 80% of the area of the transmission region. , And the blue filter is preferably formed in an area of 85 to 90% of the area of the transmission region. In this manner, the saturation and the saturation of the color pixels of red, green, and blue can be obtained. Good balance of brightness,
A color image with high color reproducibility can be displayed.

Further, it is desirable that each of the plurality of pixel electrodes and the light-transmitting regions be formed in a rectangular shape having a width in the column direction larger than the width in the row direction. Colored light of a plurality of colors is alternately emitted from a plurality of transmissive regions at a small pitch to improve the color mixture thereof, and a high-resolution color image can be displayed.

When the light-transmitting region is formed in a rectangular shape having a width in the column direction larger than the width in the row direction, the area ratio of the three colored films to the transmitting region is a predetermined value. A larger colored film is formed into a shape having a width smaller than the width of the transmissive region in the row direction and a length at least over the entire length of the transmissive region in the column direction, and the colored film having a smaller area ratio than the colored film, By forming a shape having a width smaller than the width of the region between the extension portions of the compensation capacitance electrode and a length smaller than the length in the column direction of the transmission region, the transmission region corresponding to the colored film having a large area ratio The non-colored light is emitted from a region on the side of the colored film in the row direction, and the coloring in the lateral region and the column direction of the colored film in the row direction of the transmission region corresponding to the colored film having the small area ratio. film Is preferably non-colored light from the area of the side is to be emitted, by doing so,
It is possible to better balance the saturation and brightness of the color pixels of each color displayed by the colored light and the non-colored light emitted from the plurality of transmissive regions, respectively, and to display a color image with better color reproducibility.

In this case, the colored film having an area ratio of about 90% or more to the transmission region has a width smaller than the width of the transmission region in the row direction and at least a length extending over the entire length of the transmission region in the column direction. The colored film may be formed into a shape, and the non-colored light may be emitted only from the region on the side of the colored film in the row direction from the transmission region corresponding to the colored film.

If it is possible to display color pixels having good saturation and brightness in the transmission region corresponding to the colored film of any color, the saturation and brightness of the color pixels of each color can be better balanced. Thus, a color image with better color reproducibility can be displayed.

The colored film having a large area ratio is provided with a gap between both side edges thereof and the extended portions of the compensation capacitance electrodes adjacent to these side edges, respectively. More preferably, non-colored light is emitted from the regions on both sides of the colored film in the row direction. In this way, the emitted light from the transmission region corresponding to the colored film having a large area ratio is used. The saturation and brightness of the displayed color pixels can be improved.

Further, the colored film having a large area ratio may be formed in a continuous stripe shape over a plurality of transmission regions arranged in the row direction.
The colored film can be easily formed.

The colored film having a small area ratio is formed between the side edges of the colored film and the extended portions of the compensation capacitance electrodes adjacent to the side edges, and between the both end edges and the compensation capacitor adjacent to the edges. More preferably, a gap is provided between the line portion of the electrode and the light-shielding film, and non-colored light is more preferably emitted from a region around the colored film in a transmission region corresponding to the colored film. By doing so, the saturation and brightness of the color pixel displayed by the light emitted from the transmission region corresponding to the colored film having the small area ratio can be further improved.

On the other hand, the light-shielding film has a width covering an area extending from an edge of one pixel electrode adjacent in the column direction across the gate line to a line portion of the compensation capacitor electrode facing the other pixel electrode. It is preferable to form a region corresponding to a region between pixel electrodes adjacent to each other in the column direction with the gate line interposed therebetween, from the edge of the one pixel electrode to the edge of the other pixel electrode. The light is shielded from light over the line portion of the compensating capacitance electrode facing the portion to prevent light leakage from that region, and a color image with better contrast can be displayed.

The light-shielding film may correspond to a region between pixel electrodes adjacent to each other in the column direction across the gate line and a region between pixel electrodes adjacent to each other in the row direction across the data line. By doing so, the region corresponding to the light shielding film in the region between the pixel electrodes adjacent in the column direction and the row direction is set to a dark state,
The contrast of the displayed image can be further improved.

In this case, the portion of the light-shielding film corresponding to the region between the pixel electrodes adjacent to each other in the row direction with the data line interposed therebetween is narrower than the width of the extension of the compensation capacitance electrode, and It is preferable that the external light incident on a region not corresponding to the light-shielding film among regions between the pixel electrodes adjacent in the row direction is formed by the compensation capacitor. The light is reflected by the extended portion of the electrode and emitted to the front of the liquid crystal display element, and the brightness of the entire screen can be raised by the reflected light (non-colored light).

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 1;

FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1;

FIG. 6 is a front view of a part of a liquid crystal display device according to a second embodiment of the present invention.

FIG. 7 is a front view of a part of a liquid crystal display device according to a third embodiment of the present invention.

FIG. 8 is an enlarged sectional view taken along the line VIII-VIII in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display element 2, 3 ... Substrate 4 ... Pixel electrode 5 ... TFT 11 ... Gate line 12 ... Data line 13 ... Compensation capacitance electrode 13a ... Line part 13b ... Extension part 16 ... Light shielding film 17R, 17G, 17B ... Color filter 19 ... Counter electrodes 22, 23 ... Polarizer A ... Transmission area S ... Reflection area 24 ... Illumination means 25 ... Illumination panel 26 ... Semi-transmissive reflection plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02F 1/1335 G02F 1/1368

Claims (11)

(57) [Claims] A liquid crystal display element of an active matrix type; and an illumination light, which is disposed behind the liquid crystal display element and emits illumination light toward the liquid crystal display element, and receives external light incident from the front of the liquid crystal display element. Illuminating means for reflecting toward the liquid crystal display element, on the inner surface of a rear substrate of a pair of front and rear substrates that face each other across a liquid crystal layer of the liquid crystal display element,
A plurality of pixel electrodes arranged in a matrix in a row direction and a column direction, a plurality of thin film transistors connected to each of the pixel electrodes, and a gate line connected to one side of each of the pixel electrode rows, the gate being connected to the thin film transistor; A gate line for supplying a signal, a data line wired along one side of each pixel electrode column and supplying a data signal to the thin film transistor, and an edge of the pixel electrode formed for each pixel electrode row A compensating capacitance electrode that forms a compensating capacitance between the pixel electrode and the pixel electrode facing each other with an insulating film interposed therebetween, and a counter electrode facing each pixel electrode on the inner surface of the front substrate; A light-shielding film corresponding to a region between pixel electrodes adjacent to each other in a column direction across at least the gate line in a region between pixel electrodes; On one of the inner surfaces, colored films of a plurality of colors having different transmission wavelength bands are provided alternately in a row direction in correspondence with the plurality of pixel electrodes, respectively, and the compensation capacitance electrode is configured to reflect light. With a high rate of metal film,
A line portion facing one edge of the pixel electrodes arranged in a row direction, and extending from this line portion to a region between pixel electrodes adjacent to each other in the row direction with the data line interposed therebetween, and a row is formed at both side edges thereof. The pixel electrodes adjacent to each other in the direction are formed in a shape having an extension portion opposed to a side edge portion of the pixel electrode, and are surrounded by the compensation capacitance electrode and the light shielding film in regions respectively corresponding to the plurality of pixel electrodes. Are respectively a plurality of transmission areas for emitting the illumination light incident from the back side and the external light incident from the front and reflected by the illumination means, and at least the extension of the compensation capacitor electrode. Is a reflection region in which external light incident from the front is reflected by the compensation capacitance electrode and emitted forward, and the colored film of the plurality of colors is Having a smaller area than the area of the transmission region, colored light is respectively emitted from regions of the plurality of transmission regions corresponding to the colored film, and non-colored light is emitted from regions not corresponding to the colored film. A liquid crystal display device, wherein the non-colored light reflected by the compensation capacitance electrode exits from the reflection region corresponding to at least the extension of the compensation capacitance electrode. 2. The color film of a plurality of colors, wherein the color film of a first color transmits light in a long wavelength band of a visible light band;
A color film of three colors, a second color film that transmits light in an intermediate wavelength band, and a third color film that transmits light in a short wavelength band, wherein the first color film is Has an area larger than the area of the other two colored films, and the second colored film of the other two colored films has an area of the third colored film. The liquid crystal display device according to claim 1, wherein the liquid crystal display device has an area smaller than that of the liquid crystal display device. 3. The colored film of the first color is a red filter, the colored film of the second color is a green filter, the colored film of the third color is a blue filter, and the red filter is the transmission region. , The green filter has an area of 70-80% of the area of the transmission region, and the blue filter has an area of 85-9 of the area of the transmission region.
The liquid crystal display device according to claim 3, wherein the liquid crystal display device has an area of 0%. 4. The liquid crystal according to claim 2, wherein each of the plurality of pixel electrodes and the light transmitting region is formed in a rectangular shape having a width in a column direction larger than a width in a row direction. Display device. 5. A colored film having an area ratio with respect to the transmissive region larger than a predetermined value among the three colored films, wherein the width of the transmissive region is smaller than a width of the transmissive region in a row direction. A colored film formed in a shape having a length over the entire length in the column direction, and having a smaller area ratio, has a width smaller than the width of the region between the extension portions of the compensation capacitance electrode, and the column direction length of the transmission region. The non-colored light is emitted from a region on the side of the colored film in the row direction of the transmission region corresponding to the colored film having a large area ratio, and has a length smaller than the area ratio. The non-colored light is emitted from a region on a side of the colored film in a row direction of a transmission region corresponding to a small colored film and a region on a side of the colored film in a column direction in a column direction. Liquid crystal display. 6. A colored film having an area ratio of about 90% or more with respect to the transmission region has a shape having a width smaller than a width of the transmission region in a row direction and a length at least extending over a whole length of the transmission region in a column direction. The liquid crystal display device according to claim 5, wherein the liquid crystal display device is formed. 7. The colored film having a large area ratio is provided with a gap between both side edges thereof and an extension of the compensation capacitor electrode adjacent to each of the side edges. 6. The liquid crystal display device according to claim 5, wherein non-colored light is emitted from regions on both sides of the colored film in a row direction of the transmission region corresponding to (a). 8. The liquid crystal display device according to claim 4, wherein the colored film having a large area ratio is formed in a continuous stripe shape over a plurality of transmission regions arranged in a row direction. 9. The colored film having a small area ratio is provided between both side edges thereof and an extension of the compensation capacitor electrode adjacent to the side edges, and between the both edge portions and the end edges thereof. A gap is provided between the line portion of the compensation capacitance electrode and the light-shielding film, and a non-colored light is emitted from a region around the colored film in a transmission region corresponding to the colored film. The liquid crystal display device according to claim 5, wherein: 10. The light-shielding film has a width covering an area extending from an edge of one pixel electrode adjacent in the column direction across the gate line to a line portion of the compensation capacitance electrode facing the other pixel electrode. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is formed. 11. The light-shielding film corresponds to a region between pixel electrodes adjacent in the column direction with the gate line interposed therebetween and a region between pixel electrodes adjacent in the row direction with the data line interposed therebetween. And a portion of the light-shielding film corresponding to a region between pixel electrodes adjacent to each other in the row direction with the data line interposed therebetween is narrower than the width of the extension of the compensation capacitance electrode, and the data line 2. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is formed to have a width covering the entire width of the liquid crystal display.