JPH10206886A - Reflection type liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To put a reflection type liquid crystal display device to practical use by preventing luminance modulation at a gap part between a signal line and a pixel electrode due to a lateral electric field produced at the gap part, improving picture quality, and obtaining a good-contrast and bright image display. SOLUTION: Crosstalk is prevented and display quality is improved by setting gaps d1 and d2 between 1st and 2nd signal lines 26a and 26b, and a 1st pixel electrode 27a and gaps d3 and d4 between the 1st signal lines 26a and 26b, and a 2nd pixel electrode 27b wide enough to case no luminance modulation at the gap parts. Further, TFTs are shielded only above them and the gap parts between the signal lines 26 and pixel electrodes 27 are made open to improve the aperture rate, thereby improving the display luminance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection type liquid crystal display device having pixel electrodes arranged in a matrix in a region surrounded by gate lines and signal lines.

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices have been widely used as display devices of personal OA equipment such as word processors and desktop personal computers and video display devices such as televisions because of their advantages of being thin and light and having low power consumption. In particular, in order to obtain a high-performance, high-definition, high-quality image, an active matrix liquid crystal display device (hereinafter referred to as an LCD) that drives pixel electrodes arranged in a matrix by switching elements such as thin film transistors (hereinafter referred to as TFTs). Is being developed.

Further, such an active matrix type L
Among CDs, those that display images using external light without using any lighting means in the LCD main unit, because they are used for display devices such as portable computers and electronic organizers, aiming at lighter weight and lower power consumption. Conventionally, a reflective LCD as shown in FIGS. 7 to 9 has been developed.

That is, the array substrate 11 of the reflection type LCD 16
Has a TFT 6 at an intersection of a gate line 3 and a signal line 4 formed on a transparent insulating substrate 2 having a reflection plate 1 on the back surface, and further has a gate in a region surrounded by the gate line 3 and the signal line 4. The TFT 6 is provided so as to maintain a gap with the gate line 3 and the signal line 4 via the insulating film 7 and via the source electrode 10.
Has a pixel electrode 8 driven by the Signal line 4
The distance d5 from the pixel electrode 8 is 1.5 μm. On the other hand, 14 is a common electrode 13 on a transparent insulating substrate 12.
Is formed on the counter substrate which is disposed to face the array substrate 11, and has a light shielding film 14a for preventing a light leakage current at a position corresponding to above the TFT 6.

Further, in the case of the array substrate 11 and the opposing substrate 14, when the distance l5 between the substrates 11 and 14 is set to 4.5 .mu.m and the opposing substrates 14 are arranged to face each other, T
The alignment films 11a and 14a are arranged in the direction of the arrow n and the arrow o, respectively, so that the liquid crystal molecules in the N-mode liquid crystal 15 are aligned by being twisted by 90 degrees.
The liquid crystal molecules in the mid plane of the TN mode liquid crystal 15 are aligned in the direction of arrow p. On the surface of the insulating substrate 2, a polarizing plate 2a with a reflecting plate 1 is adhered.
2a is stuck.

In the reflection type LCD 16 thus configured, in the normally white mode, when no voltage is applied between the pixel electrode 8 and the common electrode 13, the light enters the polarizing plate 12a and is linearly polarized. Outside light is TN
The polarizing plate 2a advances while being twisted through the mode liquid crystal 15 by 90 degrees.
After that, the light is reflected by the reflection plate 1 and exits from the polarizing plate 12a through the reverse path. For this reason, the incident light is absorbed by about 50% when it is linearly polarized when passing through the first polarizing plate 12a, but when passing through the second polarizing plate 2a and further exiting from the first polarizing plate 12a. Is set to be in a bright state without being absorbed.

On the other hand, the pixel electrode 8 and the common electrode 13
When a voltage is applied between the liquid crystal molecules, the liquid crystal molecules in the TN mode liquid crystal 15 are arranged in a direction perpendicular to the direction of the electric field. Instead, it is absorbed by the second polarizing plate 2a, and the incident light hardly reaches the reflecting plate 1,
The light is set so that the emitted light due to the reflected light from the reflection plate is not seen and the light is in a dark state.

[0008]

However, in such a reflective LCD, when a voltage is applied to the signal line, the distance between the signal line and the pixel electrode is as small as 1.5 μm. A horizontal electric field is generated in the gap between the pixels, and the luminance in the gap between the pixel electrodes is modulated depending on the electric field. A band is formed in the gap in the signal line direction due to crosstalk caused by the liquid crystal brightness modulation. A display pattern as if it was pulled appeared, the gap did not become dark even in the dark state,
There has been a problem that the contrast ratio is lowered and the display quality is deteriorated.

On the other hand, in the case of a transmissive TFT-LCD, in order to solve such a problem and improve the contrast, in order to prevent light leakage from a gap between the wiring and the pixel electrode, generally, the periphery of the pixel electrode is connected to a counter substrate. It is covered with the formed light shielding film. However, such a light-shielding film is used as a reflective TFT-L
Adopting a CD, and trying to cover the gap between the signal line and the pixel electrode with a light-shielding film, the light use efficiency is further deteriorated, the amount of light is reduced, and a problem that a good display cannot be obtained occurs. Practical use of the reflective TFT-LCD has been hindered.

Accordingly, the present invention has been made to solve the above-mentioned problems, and is intended to reduce the thickness and weight of the reflective TFT-L and reduce the power consumption.
In a CD, the display quality can be improved by obtaining a bright image without lowering the contrast due to crosstalk, and it can be put to practical use as a display device of a portable electronic device such as a portable computer or an electronic organizer. It is an object of the present invention to provide a reflective liquid crystal display device.

[0011]

According to the present invention, there is provided a switching element arranged at an intersection of a gate line and a signal line wired so as to intersect the gate line, and a driving element driven by the switching element. An array substrate having a plurality of pixel electrodes arranged in a matrix in a region surrounded by the gate lines and the signal lines, and an opposing substrate having a common electrode and arranged to face the array substrate with a gap therebetween, In a reflective liquid crystal display device including a liquid crystal composition sealed between the array substrate and the counter substrate, and a reflector that reflects external light transmitted through the liquid crystal composition in a display direction, the plurality of pixel electrodes At least some of the pixel electrodes are separated from the signal lines to such an extent that liquid crystal luminance modulation cannot be visually observed in the gaps between the signal lines.

According to another aspect of the present invention, there is provided a switching element arranged at an intersection of a gate line and a signal line wired so as to intersect the gate line, and the gate line driven by the switching element and the gate line. An array substrate having a plurality of pixel electrodes arranged in a matrix in a region surrounded by signal lines, a counter substrate having a common electrode, and being disposed opposite to the array substrate with a gap therebetween, In a reflective liquid crystal display device including a liquid crystal composition sealed between a counter substrate and a reflector that reflects external light transmitted through the liquid crystal composition in a display direction, at least a part of the plurality of pixel electrodes is provided. The pixel electrode is arranged so that the magnification l / d of the distance l between the array substrate and the counter substrate with respect to the distance d between the signal line and the pixel electrode is 1.9 times or less. It is those separated from the signal line.

According to the present invention, in order to solve the above-mentioned problems, in the above-mentioned reflection type liquid crystal display device, a plurality of types of pixel electrodes having different distances from signal lines are mixedly arranged on an array substrate. is there.

According to the above configuration, the distance between the signal line and the pixel electrode is widened, and the electric field generated in the gap is significantly reduced. Therefore, the luminance modulation depending on the electric field in the gap is performed as a band-like pattern in the signal line direction. There is no risk of being seen, and pixel electrodes with a large distance from the signal line and pixel electrodes with a small distance are mixed, covering the decrease in contrast caused by widening the distance between the signal lines, Reflective type L
It is an object of the present invention to secure a required contrast while improving the display quality of a CD, and to increase the display luminance by enabling the aperture ratio to be improved, thereby realizing the practical use of a reflective LCD.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the principle of the present invention will be described with reference to FIG. A band-shaped display pattern generated in a gap between a signal line and a pixel electrode, which has been a cause of deteriorating the display quality of a conventional LCD, is generated by the following principle.
That is, the array substrate 11 of the conventional reflective LCD shown in FIG.
And the orientation processing direction of the counter substrate 14 is an arrow n direction,
The mid-plane liquid crystal molecules of the TN mode liquid crystal 15 sealed between the substrates 11 and 14 are directed in the direction of arrow p parallel to the longitudinal direction of the signal line 4. On the other hand, when a voltage is applied to the signal line 4, a horizontal electric field is generated in the gap between the signal line 4 and the pixel electrode 8, and the orientation direction of the liquid crystal molecules is shifted in the direction of the electric field in accordance with the electric field. This is caused by modulation.

On the other hand, a reflection type LC using a TN mode liquid crystal
In D, the distance of the gap between the signal line and the pixel electrode is varied, and the pixel at the measurement point is determined by the ratio l / d of the gap d between the signal line and the pixel electrode and the gap l between the array substrate and the counter substrate. When the liquid crystal luminance modulation in the gap portion was changed when the signal line potential during the holding period was set to the black display potential during white display, the result shown in FIG. 1 was obtained. As is apparent from this result, the magnification l / d of the distance l between the array substrate and the counter substrate with respect to the distance d between the signal lines and the pixel electrodes.
However, when it was 1.9 times or less, it was found that the amount of change in luminance between the signal lines and the pixel electrodes was significantly reduced to 10% or less, and no band-like display pattern was formed on the image.

Therefore, the present invention is based on the above principle, and does not generate a horizontal electric field in the gap between the signal line and the pixel electrode, thereby preventing the brightness from being modulated in the gap. To obtain a type LCD.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Reference numeral 17 denotes a reflective TFT-LCD in which a TN mode liquid crystal 21 is sealed between the array substrate 18 and the opposing substrate 20, and the gap l between the array substrate 18 and the opposing substrate 20 is 4.5 μm. A plurality of gate lines 24 and a plurality of signal lines 26 intersecting the gate lines 24 are formed on the glass substrate 22 of the array substrate 18 with an insulating film 23 interposed therebetween, and are formed in a region surrounded by the gate lines 24 and the signal lines 26. A first pixel electrode 27a and a second pixel electrode 27b made of indium tin oxide (hereinafter referred to as ITO) are formed, and a TFT 28 serving as a switching element formed at an intersection of the gate line 24 and the signal line 26 is formed. Being driven.

That is, in FIG. 2, the first gate line 24a
The first pixel electrodes 27a arranged in a row connected to
First signal line 2 electrically connected via TFT 28
6a, the gap between the second signal line 26b, which is connected to the electrostatic coupling without the intermediary of the TFT 28, is widened.
The distance d1 between the first pixel electrode 27a and the second signal line 26b is 1.5 μm, and the distance d2 between the second signal line 26b and the first pixel electrode 27a is 3 μm. Further, the second pixel electrodes 27b arranged in a row connected to the second gate line 24b have a wide interval with the first signal line 26a electrically connected through the TFT 28, It is closer to the second signal line 26b which is connected closer to the electrostatic coupling without the intermediary of the TFT 28, and the distance d3 between the first signal line 26a and the second pixel electrode 27b is 3 μm.
m, and the distance d4 between the second signal line 26b and the second pixel electrode 27b is 1.5 μm.

As a result, the first and second signal lines 26a,
Distances d1 and d2 between the first pixel electrode 27a and the first pixel electrode 27a;
The ratio 1 / to the distance 1 between the array substrate 18 and the counter substrate 20
d1 and / d2 are set to 3 and 1.5, respectively, while the distances d3 and d4 between the first and second signal lines 26a and 26b and the second pixel electrode 27b, the array substrate 18 and the opposing substrate 20
The ratios l / d3 and l / d4 to the distance l are 1.5 and 3 respectively.
It has become.

The first pixel electrode 27a connected along the first gate line 24a and the second gate line 24
A pixel electrode pattern similar to the second pixel electrode 27b connected along the line b is repeated for every other gate line 24.

Further, T is formed integrally with the gate line 24.
Above the gate electrode 30 of the FT 28, the gate insulating film 3
1, a semiconductor layer 32, an etching stopper 33, and an ohmic contact layer 34 are formed.
A drain electrode 36 extending from the pixel electrode 27 and a source electrode 37 connected to the pixel electrode 27 are formed, and a protective film 38 is formed on the entire surface. Reference numeral 39 denotes an auxiliary capacitance line formed below the pixel electrode 27 in the same layer as the gate line 24.

Next, a light-shielding film 41, which is a light-shielding member that shields light incident on the TFT 28, is formed at a position on the opposite substrate 20 facing the array substrate 18 opposite to the TFT 28 on the glass substrate 40. , And further through the insulating film 42
A common electrode 43 made of TO is formed on the entire surface, and the top thereof is protected by a protective film 44. Reference numerals 46 and 47 denote alignment films applied to the opposing surfaces of the array substrate 18 and the opposing substrate 20, respectively.
Rubbing treatment is performed so that the liquid crystal molecules in the TN mode liquid crystal 21 are twisted by 90 degrees. Further, 48 and 50 are polarizing plates, and 51 is a reflector as a reflector.

In such a reflection type TFT-LCD 17, when no voltage is applied to the signal line 26, external light linearly polarized by the polarizing plate 50 is applied to the TN mode liquid crystal 21.
After passing through the polarizing plate 48 while twisting through the inside 90 degrees,
The light is reflected by the reflection plate 51, exits from the polarizing plate 50 through the reverse path, and enters a bright state. On the other hand, when a voltage is applied to the signal line 26, the external light linearly polarized by the polarizing plate 50 goes straight through the TN mode liquid crystal 21, so that the polarizing plate 48
And is darkened.

The reflection type TFT formed as described above
A display test of the LCD 17 was performed, and as a display image, a window having a different background and luminance was displayed at the center of the screen of the reflective TFT-LCD 17 to check the image quality. And the contrast was improved without being visually recognized.
In addition, a bright screen having a necessary display light amount was obtained, and a good display image with high display quality was obtained.

With this configuration, the first and second signal lines 26a and 26b and the first and second pixel electrodes 27a and
7b is set to 3 μm or more, and the array substrate 18
And the ratio to the distance between the opposing substrates 20 is 1.5 or less,
The ratio l5 / d5 in the conventional device is reduced as compared with 3, the lateral electric field generated in the gap between the signal line 26 and the pixel electrode 27 is significantly reduced as compared with the conventional device, and the brightness modulation in the gap is also reduced. Although the luminance is reduced to 10% or less and some luminance modulation occurs, the luminance modulation is reduced to 1/5 or less of the conventional one, and the luminance modulation hardly occurs.
Since a band-shaped pattern does not occur in the direction, a decrease in contrast can be prevented, and display quality can be improved. Therefore,
There is no need to cover the gap between the signal line 26 and the pixel electrode 27 with a light-shielding film, and only the upper part of the TFT 28 is covered with the light-shielding film 41, so that a good image with good contrast can be obtained. As a result, a sufficient display light amount can be obtained.

Further, the array substrate 1 is designed to minimize the contrast reduction caused by widening the gap between the signal line 26 and the pixel electrode 27 while preventing the brightness modulation of the gap.
8, the first and second signal lines 26a, 26b and the first
And the distance between the second pixel electrodes 27a and 27b is set to 1.5
.mu.m narrow intervals d1, d4 and 3 .mu.m wide intervals d2,
Since d3 and d3 are alternately formed, the contrast is not significantly impaired, and furthermore, the reflection type TFT-LCD with good contrast, high brightness and good display quality is obtained.
Can be put to practical use.

Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in the shape and arrangement of the pixel electrodes, but is otherwise the same as the first embodiment. I do.

That is, the region surrounded by the gate lines 24 and the signal lines 26 on the glass substrate 22 of the array substrate 18 has
Third pixel electrode 56 and fourth pixel electrode 5 made of TO
7 are formed. That is, in FIG. 6, the third pixel electrode arranged on the first gate line 24a and the first and second
The distance d7 between the first and second signal lines 26a and 26b is as narrow as 1.5 .mu.m, and the distance d7 between the fourth pixel electrode 57 arranged on the second gate line 24b and the first and second signal lines 26a and 26b.
8 is widened to 3.0 μm.

As a result, the first and second signal lines 26a,
The ratio 1 / d7 of the distance d7 between the pixel electrode 26b and the third pixel electrode 56 and the distance 1 between the array substrate 18 and the counter substrate 20 is 3
Although the luminance modulation is about 50% as shown in FIG. 1, the distance d8 between the first and second signal lines 26a and 26b and the fourth pixel electrode 57, the array substrate 18 and the opposing substrate 20 The ratio 1 / d8 to the interval l is reduced to 1.5, and the luminance modulation is set to 10% or less from FIG. A pixel electrode pattern similar to the third pixel electrode 56 arranged along the first gate line 24a and the fourth pixel electrode 57 arranged along the second gate line 24b is formed by a gate. It is sequentially repeated every other line 24. Further, the third pixel electrode 56 and the fourth pixel electrode 57
In order to make the area of the third pixel electrode 56 and the second pixel electrode 56 equal,
Is slightly widened with the gate line 24b.

With this configuration, the distance between the first and second signal lines 26a and 26b and the third pixel electrode 56 is 1.
Although the width is as small as 5 μm, a horizontal electric field is generated, and crosstalk is caused by the luminance modulation, whereby the band-shaped display pattern is visually recognized in the direction of the signal line 26.
The distance between the a and 26b and the fourth pixel electrode 57 is set to be as wide as 3 μm, the lateral electric field is remarkably reduced, the luminance modulation in the gap is reduced to 10% or less, and the luminance modulation hardly occurs.
A band-like pattern is not visually recognized in the direction of the signal line 26 due to crosstalk caused by this, so that a decrease in contrast can be prevented, and the display quality of the reflective TFT-LCD 17 as a whole can be improved. Therefore, there is no need to cover the gap between the signal line 26 and the pixel electrode 27 with a light-shielding film.
A good image with good contrast can be obtained only by covering only the upper part of the light-shielding film 28 with the light-shielding film 41. Therefore, the aperture ratio can be improved and a sufficient display light amount can be obtained. Moreover, the first and second signal lines 26a and 26b and the third pixel electrode 5 are arranged on the array substrate 18 while preventing the luminance modulation of the gap.
6, the distance d8 between the first and second signal lines 26a and 26b and the fourth pixel electrode 57 is increased to 3 .mu.m, and the narrow distance d7 and the wide distance d are increased.
Since 8 and 8 are alternately formed, the reflective TFT-LCD with good contrast, high brightness, and good display quality can be practically used without significantly impairing the contrast.

The present invention is not limited to the above-described embodiment, and can be changed without departing from the spirit of the present invention. For example, the type of the liquid crystal composition or the structure of the switching element is arbitrary. . The interval between the signal line and the pixel electrode is not limited as long as the horizontal electric field is further reduced. More preferably, the interval d between the signal line and the pixel electrode and the interval l between the array substrate and the opposing substrate are more preferable. 1 / d is 1.9 or less, and the luminance change rate between the signal line and the pixel electrode is 10% or less.

The shape pattern or arrangement pattern of the pixel electrodes formed on the array substrate is not limited, and the shape of the pixel electrodes may be three or more. In the first embodiment, The gate line to which the first pixel electrode is connected and the gate line to which the second pixel electrode is formed are not repeated every other line, but are alternately repeated every two or more lines. The same applies to the embodiment described above. Further, instead of repeating the pattern for each gate line, two types of pixel electrodes may be repeated in a checkered pattern, and the gap with the signal line is wide. The distribution between the pixel electrodes and the narrow pixel electrodes is completely arbitrary as long as the contrast is not impaired.

In the second embodiment, when the areas of the third and fourth pixel electrodes are not equal, the liquid crystal capacitance of the third pixel electrode is represented by CLc3, and the auxiliary capacitance for forming the capacitance with the third pixel electrode. When the capacitance of the line is Cs3, the liquid crystal capacitance of the fourth pixel electrode is CLc4, and the capacitance of the auxiliary capacitance line forming the capacitance with the fourth pixel electrode is Cs4,

(Equation 1) The area of the auxiliary capacitance line that forms a capacitance with the third pixel electrode and the fourth pixel electrode may be changed so that

The shape and the light-shielding range of the light-shielding member formed on the opposite substrate are not limited. However, if the light-shielding member is provided only above the TFT as shown in the first and second embodiments, the display area can be reduced. Can be reduced as much as possible, and the aperture ratio can be further improved. The display direction of the reflection type LCD is also arbitrary. For example, external light may be incident from the array substrate side, reflected by a reflection plate provided on the counter substrate side, and emitted to the array substrate side. In this case, the gate electrode itself is TF
Since it plays the role of the light-shielding plate of T, there is no need to provide a light-shielding plate for preventing light leakage.

[0036]

As described above, according to the present invention, in the reflection type liquid crystal display device which is light and small in size, the voltage between the signal line and the pixel electrode is set to be wide by setting the voltage to the signal line. The horizontal electric field generated in the gap due to the application is reduced, the luminance modulation in the gap is reduced, and pixel electrodes are arranged such that a band-shaped pattern is not seen in the signal line direction due to crosstalk caused by the luminance modulation. As a result, the display quality can be improved without lowering the contrast. Moreover, by mixing a pixel electrode with a large gap with the signal line and a pixel electrode with a small gap, the poor contrast caused by widening the gap between the signal line and the pixel electrode can be compensated.
Good display quality can be maintained. Furthermore, since a good display quality can be obtained without shielding the gap between the signal line and the pixel electrode, the aperture ratio can be improved, sufficient display luminance can be obtained, and a bright and high-quality reflective type can be obtained. A liquid crystal display device can be realized.

[Brief description of the drawings]

FIG. 1 is a view for explaining the principle of the present invention, and shows a luminance change amount between a signal line and a pixel electrode with respect to a magnification l / d of an interval l between an array substrate and a counter substrate with respect to a distance d between a signal line and a pixel electrode. FIG.

FIG. 2 is a schematic plan view showing a reflective liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of the reflective liquid crystal display device according to the first embodiment of the present invention, taken along line AA ′ in FIG.

FIG. 4 is a schematic cross-sectional view of the reflective liquid crystal display device according to the first embodiment of the present invention, taken along line BB ′ in FIG.

FIG. 5 is a sectional view showing a thin film transistor according to the first embodiment of the present invention.

FIG. 6 is a schematic plan view showing a reflective liquid crystal display device according to a second embodiment of the present invention. .

FIG. 7 is a schematic plan view showing a conventional reflective liquid crystal display device.

FIG. 8 is a schematic cross-sectional view of the conventional reflection type liquid crystal display device taken along the line CC ′ in FIG. 7;

FIG. 9 is a schematic cross-sectional view of the conventional reflective liquid crystal display device taken along line DD ′ in FIG. 7;

[Explanation of symbols]

 17: Reflective TFT-LCD 18: Array substrate 20: Counter substrate 21: TN mode liquid crystal 22: Glass substrate 24a: First gate line 24b: Second gate line 26a: First signal line 26b: Second Signal line 27a first pixel electrode 27b second pixel electrode 28 TFT 30 gate electrode 40 glass substrate 41 light-shielding film 43 common electrode 46, 47 alignment film 48, 50 polarizing plate 51 reflection Board

Claims (7)

[Claims] 1. A switching element arranged at an intersection of a gate line and a signal line wired so as to cross the gate line, and a matrix driven by the switching element and arranged in a region surrounded by the gate line and the signal line. An array substrate having a plurality of pixel electrodes arranged in a matrix, a counter substrate having a common electrode, and disposed opposite to the array substrate with a gap therebetween, and a liquid crystal composition sealed between the array substrate and the counter substrate In a reflective liquid crystal display device comprising: an object and a reflector that reflects external light transmitted through the liquid crystal composition in a display direction, at least a part of the plurality of pixel electrodes is connected to the signal line. A reflection type liquid crystal display device characterized in that the liquid crystal display device is separated from the signal line to such an extent that liquid crystal luminance modulation cannot be visually observed in the gap. 2. A switching element arranged at an intersection of a gate line and a signal line wired to cross the gate line, and a matrix driven by the switching element and arranged in a region surrounded by the gate line and the signal line. An array substrate having a plurality of pixel electrodes arranged in a matrix, a counter substrate having a common electrode, and disposed opposite to the array substrate with a gap therebetween, and a liquid crystal composition sealed between the array substrate and the counter substrate Object, and a reflective liquid crystal display device including a reflector that reflects external light transmitted through the liquid crystal composition in a display direction, wherein at least a part of the plurality of pixel electrodes includes the signal line and the signal line. The magnification l / d of the distance l between the array substrate and the counter substrate with respect to the distance d between the pixel electrodes is
A reflection type liquid crystal display device, wherein the reflection type liquid crystal display device is separated from the signal line so as to be 1.9 times or less. 3. The reflection type according to claim 1, wherein a plurality of types of pixel electrodes having different distances from the signal lines are arranged on the array substrate in a mixed manner. Liquid crystal display. 4. A method according to claim 1, wherein a plurality of types of pixel electrodes having different intervals from the signal lines are repeatedly arranged in a predetermined pattern on the array substrate. 3. The reflection type liquid crystal display device according to item 1. 5. A plurality of types of arrangements in which the same pixel electrodes having an arbitrary distance from a signal line are arranged on an array substrate,
3. The reflection type liquid crystal display device according to claim 1, wherein the reflection type liquid crystal display device is arranged repeatedly in a predetermined pattern for each gate line. 6. An array of a first pixel electrode having a small interval with a signal line on the array substrate and a second array having a large interval with a signal line.
3. The reflection type liquid crystal display device according to claim 1, wherein the arrangement of the pixel electrodes is repeated at least every other gate line. 7. A first pixel electrode arranged on the array substrate so as to be shifted toward a signal line electrically connected via a switching element, and a first pixel electrode shifted toward a side apart from the signal line. 3. The reflection type liquid crystal display device according to claim 1, wherein the second pixel electrodes arranged in a row are repeatedly arranged in a predetermined pattern for each gate line.