JP2002122841A - Driving method of liquid crystal display device and liquid crystal display device - Google Patents

Abstract

(57) [Summary] In an IPS mode liquid crystal display device, the direction of an electric field near a common line cannot be made uniform, so that display cannot be made uniform in that region, the transmittance is reduced, and the brightness of the liquid crystal panel is reduced. There was a problem to make it. SOLUTION: In a liquid crystal display device provided with at least one region surrounded by a pixel electrode, a common electrode, and a common line, the electric field generated between the pixel electrode and the common line is canceled out. A configuration for generating an electric field in the direction is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display panel using a horizontal electric field horizontal to a substrate.

[0002]

2. Description of the Related Art Thin-film transistors (TFTs)
Active matrix type liquid crystal display using Transister) has advantages such as thinness, light weight and low voltage drive, and it is used for TV, camcorder display, personal computer, and personal word processor display. It is used in various fields, such as for example, to form a large market.

In recent years, in particular, in the field of computers and TVs, there has been an increasing demand for a liquid crystal display panel having a wider viewing angle in order to cope with a larger screen. As a method for widening the angle, a horizontal electric field method in which a pixel electrode and a common electrode for driving a liquid crystal are formed on the same substrate and a liquid crystal molecule is operated by applying a horizontal electric field is disclosed in Japanese Patent Application Laid-Open No. H6-160878. And so on. This method uses IPS (In-Plane-Swi
In this display mode, the long axis of the liquid crystal molecules is generated by arranging the pixel electrode and the common electrode almost in parallel and generating an electric field in the horizontal direction with respect to the substrate. Since it is always almost parallel to the substrate, it does not stand up, and therefore has a small change in brightness when the viewing angle direction is changed, and a wide viewing angle can be obtained.

However, in the above electrode configuration,
A plurality of common electrodes or pixel electrodes are connected to each other by wiring as called a comb-shaped electrode. Near the connection with this wiring, the direction of the electric field is disturbed, and there is a region where the behavior of liquid crystal molecules cannot be controlled. Had occurred. To solve this problem, a liquid crystal display device that suppresses the generation of domains by changing the direction of the electric field in the non-control region by devising the shape of the connection between the electrode and the wiring portion is disclosed in
No. 767 is proposed.

Hereinafter, a conventional liquid crystal display device will be described with reference to the drawings.

FIG. 7A is a plan view showing an electrode configuration of one pixel in a conventional liquid crystal display device, and FIG.
FIG. 7A is an enlarged view of a region a, showing an initial alignment state of the liquid crystal when no electric field is applied, and FIG. 7C shows an electric field direction and an orientation of the liquid crystal when an electric field is applied. FIG.
1A, reference numeral 1 denotes a gate wiring for supplying a scanning signal;
Reference numeral 2 denotes a source line for supplying a video signal, and a thin film transistor (TFT) having a semiconductor layer as a switching element near an intersection with the gate line 1.
or) 5 is formed, and the TFT 5 is selectively switched by a scanning signal supplied from the gate line 1, and a video signal supplied from the source line 2 is supplied via the TFT 5 during the ON period of the TFT. , To the pixel electrode 3. An electric field is generated between the potential supplied to the pixel electrode 3 and the potential of the common electrode 4 serving as a reference potential,
The gradation display is performed by controlling the movement of the liquid crystal 7 between the electrodes. At this time, each common electrode 4 is connected to the common wiring 106, and the common wiring 106 supplies a reference potential given from a peripheral circuit to the common electrode 4. Also, the common wiring 106
On the upper part, a storage capacitor electrode 10 connected to the pixel electrode 3 is provided.
8 are superimposed via an insulating layer, and a storage capacitance portion for stabilizing the liquid crystal holding operation is formed.

[0007] In the above structure, as shown in FIG. 7 (b), an electrode end is inclined at a connection portion between the common wiring 106 and the common electrode 4 and at a connection portion between the pixel electrode 3 and the storage capacitor electrode 108. In the adjacent regions 10 and 11, the region 10 forms a region using a part of the common wiring 106, whereas in the region 11, the storage capacitor electrode 10
The region is formed by using a part of 8. According to this configuration, the direction of the electric field 9 can be controlled so that the liquid crystal in the region rotates in the same direction, and thus a liquid crystal display device free of disclination can be obtained.

[0008]

However, in the liquid crystal display device configured as described above, the direction of the electric field 9 for driving the liquid crystal is controlled so that the liquid crystal does not reversely rotate in the region. As approaching the common wiring 106 or the storage capacitor electrode 108, the direction of the electric field for driving the liquid crystal, that is, the direction of the electric field 9 (a) generated between the pixel electrode and the common electrode is greatly different from the direction 9 (b).
Direction. Therefore, as a result, the liquid crystal in this region cannot be sufficiently rotated, so that this portion becomes dark and the transmittance is reduced. If the inclination angle of the electrode end is increased, the direction of the electric field approaches the direction of the electric field between the pixel electrode and the common electrode. However, the area occupied by the electrodes increases, and the aperture ratio decreases and the brightness decreases.

The present invention has been made in view of the above-mentioned inconvenience of the conventional liquid crystal display device. In the IPS type liquid crystal display device, the liquid crystal is uniformly controlled in a region other than a portion which is shielded by electrodes or wiring. It is another object of the present invention to provide a bright and high-quality liquid crystal display device.

[0010]

In order to achieve the above object, the liquid crystal display of the present invention has at least the following constitution.

According to the first aspect, in a liquid crystal display device having at least one region surrounded by a pixel electrode, a common electrode, and a common line, an electric field generated between the pixel electrode and the common line is controlled by an electric field generated between the pixel electrode and the common line. There is a driving method for generating an electric field in a direction to cancel the electric field. With this configuration, the direction of the electric field for driving the liquid crystal can be made uniform in the region between the pixel electrode and the common electrode. As a result, the occurrence of disclination can be prevented, and sufficient liquid crystal can be applied to the entire liquid crystal in the region. Since an electric field can be applied, the transmittance can be improved.

The means 2 has a driving method for generating an electric field generated between the pixel electrode and the common electrode on the common line in a direction to cancel the electric field generated between the pixel electrode and the common line. I have. With this configuration, it is not necessary to newly provide a means for generating an electric field, and display uniformity and transmittance can be easily improved.

Means 3 has a configuration in which the distance between the electrode end of the storage capacitor electrode and the common wiring end is alternately changed for each region. With this configuration, the intensity of the electric field generated between the pixel electrode and the common wiring can be changed for each region, and even when the direction and intensity of the electric field to be canceled out differ depending on the region, the intensity of the electric field applied to the liquid crystal is reduced. The direction can be made uniform.

In the means 4, when the dielectric anisotropy of the liquid crystal is positive and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the common line side in the vicinity is θ> 90.
° in the region where θ <90 °
The configuration is such that the distance between the storage capacitor electrode end and the common wiring end is reduced. With this configuration, an electric field for rotating the liquid crystal in the opposite direction is generated between the common line and the pixel electrode in a region where θ> 90 °, but the pixel electrode and the storage capacitor electrode, which is a conductive potential, are brought closer to the common line end. Thus, the intensity of the electric field generated between the storage capacitor electrode and the common electrode can be increased, and the electric field rotating in the opposite direction can be eliminated. On the other hand, in the region where θ <90 °, the electric field generated between the storage capacitor electrode and the common electrode acts in the direction in which the liquid crystal rotates in the opposite direction. Thus, the electric field strength can be reduced, and a more uniform electric field can be obtained in each region.

In the means 5, if the dielectric anisotropy of the liquid crystal is negative, and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the side of the common line in the vicinity is θ <90.
° in the region where θ> 90 °
The configuration is such that the distance between the storage capacitor electrode end and the common wiring end is reduced. With this configuration, even when the dielectric anisotropy of the liquid crystal is negative, a more uniform electric field can be obtained in each region in the same manner as in the means 5.

In the means 6, 7, and 8, the upper and lower sides of the storage capacitor electrode and the common wiring are reversed from those of the means 3, 4, and 5, respectively, and the relation between the end of the storage capacitor electrode and the common wiring is reversed accordingly. The configuration is as follows. With this configuration, a uniform electric field can be obtained in each region even when the storage capacitor electrode is in the lower layer, as in the means 3, 4, and 5.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a liquid crystal display device of the present invention will be described more specifically with reference to the drawings. However, in the following description of the drawings, the same parts as those in the above-described conventional example will be described with the same reference numerals, avoiding duplication.

(Embodiment 1) FIG. 1A is a plan view showing an electrode configuration of one pixel in a liquid crystal display device of Embodiment 1, and FIG. 1B is a plan view of a region a in FIG. 1A. The enlarged view shows the initial alignment state of the liquid crystal when no electric field is applied.
FIG. 1C shows the direction of the electric field and the orientation of the liquid crystal when an electric field is applied. FIG. 1D is an enlarged view of a region b in FIG. 1C and shows the direction of the electric field at that time. In FIG. 1A, reference numeral 1 denotes a gate line for supplying a scanning signal, and 2 denotes a source line for supplying a video signal. A thin film transistor 5 having a semiconductor layer as a switching element is formed near an intersection with the gate line 1. And
The TFT 5 is selectively switched by a scanning signal supplied from the gate line 1, and a video signal supplied from the source line 2 is supplied to the TFT 5 during an ON period of the TFT.
5 to the pixel electrode 3. An electric field is generated between the potential supplied to the pixel electrode 3 and the potential of the common electrode 4 serving as a reference potential, and gradation display is performed by controlling the movement of the liquid crystal 7 between the electrodes. At this time, each common electrode 4 is connected to a common wiring 6, and the common wiring 6 supplies a reference potential given from a peripheral circuit to the common electrode 4.
A storage capacitor electrode 7 connected to the pixel electrode 3 is superposed on a part of the common line 6 via an insulating layer, and a storage capacitor unit for stabilizing the liquid crystal holding operation is formed. All of the above are formed on an array substrate based on a glass substrate, and have substantially the same configuration as the above-described conventional example.

FIG. 1 is different from the conventional configuration.
As shown in FIG. 1A and FIG. 1B, a region for driving the liquid crystal is a region surrounded by the respective electrode ends or the wiring ends of the pixel electrode 3, the common electrode 4, and the common wiring 6. In addition, the distance between the electrode end of the storage capacitor electrode 8 formed on the common wiring 4 and the wiring end of the common wiring 4 forming the region is alternately different for each region. In addition, the dielectric anisotropy of the liquid crystal is positive, and among the angles formed by the pixel electrode and the initial alignment direction of the liquid crystal, the angle on the common line side in the vicinity is θ.
In the region 11 where θ> 90 °, θ <9
The distance between the end of the storage capacitor electrode and the end of the common wiring is shorter (L1 <L2) than in the region 10 where the angle is 0 °. In the present embodiment, the initial alignment direction of the liquid crystal is inclined by 10 ° with respect to the direction in which the pixel electrode extends, but the present invention is not limited to this.

According to the above configuration, as shown in FIG. 1D, electric fields 9 (c) and 9 (d) are provided between the pixel electrode 3 and the common wiring 6, and between the common electrode 4 and the storage capacitor electrode. Are generated, but when the respective electric field components are decomposed in the X and Y directions as shown in FIG. 1-5, the Y direction components 9 (c) y and 9 (d) y act in directions to cancel each other out, X-direction component, ie, 9
Since only the electric field component in the same direction as (a) is applied to the liquid crystal, a uniform electric field can be applied to the liquid crystal in the region, and a bright display without disclination can be achieved.

In this case, in the region 11, the closer the end of the storage capacitor electrode and the end of the common wiring are, the more the strength of the canceling electric field can be made the same and the effect is further enhanced. Specifically, it is desirable to set L1 to 5 μm or less.

In the region 10, the electric field generated between the pixel electrode 3 and the common line 6 coincides with the direction of rotation of the liquid crystal. When the intensity of the electric field to be rotated is too strong, disclination occurs. For this reason, it is better to keep the end of the storage capacitor electrode and the end of the common wiring at a certain distance or more, and specifically, it is preferable to set L2 to 2 μm or more. At this time, it is more preferable that the relationship of L1> L2 is maintained.

The array substrate configured as described above, and the color filter substrate on which the red, green, and blue color filter layers and the black matrix are formed are formed on beads dispersed on the substrate or on the color filter substrate. The liquid crystal panel opposes the liquid crystal 7 while maintaining a constant gap by the post spacer, and the periphery thereof is sealed with a sealant or the like to form a liquid crystal panel.

The liquid crystal display device according to this embodiment can be manufactured, for example, as follows.

First, a first conductive layer containing aluminum (Al) as a main component is formed on a glass serving as an array substrate by a sputtering method or the like, and then patterned in the same plane by a photolithographic method. The gate wiring 1, the common electrode 4, and the common wiring 6 are obtained at the same time. Next, after an insulating layer such as silicon nitride (SiNx) is deposited by a CVD method or the like, a semiconductor layer made of a-Si or the like is formed by a CVD method or the like. Further, a second conductive film layer is formed and patterned in the same process as the first conductive layer to obtain the source wiring 2, the pixel electrode 3, the storage capacitor electrode 8, and the TFT 5.

Incidentally, a third insulating layer may be further formed on this upper layer in order to protect the TFT and the electrode. The material used for the conductive layer is preferably a metal having low wiring resistance, but is not particularly limited to an aluminum-based metal, and may be a single-layer film or a multilayer film.

On the other hand, on a glass substrate serving as a color filter substrate, metal Cr is formed by sputtering or the like, and then a pattern is formed on the same plane by photolithography to obtain a conductive black matrix. Next, a resin having each of the three colors of RGB is patterned in order to obtain a color filter layer arranged in a dot shape. Thereafter, an overcoat layer may be formed over the entire color filter substrate using a resin such as acrylic to prevent contamination of the liquid crystal layer by Cr or the like. In addition, the black matrix may be formed using a resin material. In this case, a film forming process by coating such as spin coating or printing can be used, and equipment cost can be reduced.

An alignment film is applied to the two substrates thus manufactured, rubbed in a predetermined direction, and the peripheral portion is bonded with a sealant with a resin spacer sandwiched between the substrates. Inject and seal to obtain a liquid crystal panel. Thereafter, a source signal driving circuit is connected to the end of the source wiring 2 of the liquid crystal display panel, and a gate driving circuit is connected to the end of the gate wiring 1. A driving circuit element such as an IC on each driving circuit is supplied with a control signal from a controller. The liquid crystal display device can be obtained by connecting a power supply and a flat cable.

In the vicinity of the storage capacitor (region a) in the liquid crystal display device configured as described above and the liquid crystal display device having the conventional configuration.
1 (f) and 1 (g) show the results of simulating the distribution of the electric field and transmittance of FIG. As shown in FIG. 1 (f), it can be seen that a substantially uniform electric field is formed by the above-described configuration, and accordingly, a uniform transmittance is obtained. On the other hand, in FIG. 1 (g), it can be seen that a portion that does not have a uniform electric field direction occurs and the transmittance is reduced.

In the present embodiment, the positions of the common wiring 6 and the storage capacitor electrode 8 are formed substantially in the vicinity of the center of one pixel. However, they may be formed anywhere in the pixel. Alternatively, it may be formed so as to surround the periphery of one pixel.

(Embodiment 2) A liquid crystal having negative dielectric anisotropy is used, the initial alignment direction is inclined by 10 ° with respect to the normal direction of the pixel electrode as shown in FIG. The configuration is the same as that of the first embodiment except that the positional relationship is reversed. With this configuration, even when a liquid crystal having a negative dielectric anisotropy is used, the behavior of the liquid crystal in the region can be uniformly controlled.

(Embodiment 3) FIG. 3 shows an electrode configuration in the vicinity of a storage capacitor section in Embodiment 3 of the present invention, and shows the direction of an electric field and the orientation of liquid crystal when an electric field is applied. As shown in FIG. 3, in the liquid crystal display device of the first embodiment,
The pixel electrode 3 and the storage capacitor electrode 8 were formed first, and the common electrode 4 and the common wiring 6 were formed in an upper layer via an insulating layer. In addition, in the regions 10 and 11, the positional relationship between the common wiring 6 and the storage capacitor electrode 8 is reversed. With this configuration, even in a configuration in which the common wiring is formed above the storage capacitor electrode, the behavior of the liquid crystal in the region can be uniformly controlled.

(Embodiment 4) A liquid crystal having a negative dielectric anisotropy is used, the initial alignment direction is inclined by 10 ° with respect to the normal direction of the pixel electrode as shown in FIG. The configuration was the same as that of the third embodiment except that the positional relationship was reversed. With this configuration, even when the common wiring is formed in the upper layer of the storage capacitor electrode and a liquid crystal having a negative dielectric anisotropy is used, the behavior of the liquid crystal in the region can be uniformly controlled.

(Embodiment 5) FIGS. 5A and 5B are diagrams showing an electrode configuration and an electric field in the vicinity of a storage capacitor portion of one pixel in a liquid crystal display device of Embodiment 5, and FIG. It shows a portion substantially the same as the b region in the first embodiment. In this embodiment mode, the region for driving the liquid crystal is the pixel electrode 3.
In addition to the common electrode 4 and the common wiring 6, the electrode end of the storage capacitor electrode 8 or a region surrounded by the wiring end, and the wiring end of the common wiring 6 and the storage capacitor forming this region. That is, the electrode end of the electrode 8 has substantially the same length or similar shape.

According to the above configuration, the behavior of the liquid crystal in the region can be controlled uniformly as in the first embodiment, and uniform display characteristics can be obtained.

(Embodiment 6) FIG. 6 is a plan view showing an electrode configuration of one pixel in a liquid crystal display device of Embodiment 6. The present embodiment is different from the first embodiment in that the pixel electrode 3 and the common electrode 4 are formed in a bent or inclined shape with respect to the gate wiring 1 or the common wiring 4, and the liquid crystal 7 is formed in the gate wiring 1. Alternatively, the initial orientation is perpendicular to the common wiring 4. Also in the above configuration, by forming the storage capacitor electrode 8 in the same manner as in the first embodiment, a uniform electric field can be applied to the liquid crystal in the region, and a bright display without disclination can be performed. Although the source wiring 2 may have a straight configuration as in the first embodiment, it can be bent or inclined similarly to the common electrode 4 as shown in FIG. Can be improved.

Even when a liquid crystal having a negative electrostatic anisotropy is used, the storage capacitor electrode configuration shown in the second embodiment can be used.
Similar effects can be obtained.

[0038]

As described above, according to the present invention, in an IPS mode liquid crystal display device, at least one region surrounded by a pixel electrode, a common electrode, and a common wiring is formed, and the pixel electrode and the common wiring are formed. For the electric field generated between
By providing a configuration for generating an electric field in a direction to cancel the electric field, the direction of the electric field for driving the liquid crystal can be made uniform in a region between the pixel electrode and the common electrode. As a result, disclination occurs. To prevent
Since a sufficient electric field can be applied to the entire liquid crystal in the region, a bright liquid crystal display device with improved transmittance can be provided.

[Brief description of the drawings]

FIG. 1A illustrates a liquid crystal display device according to a first embodiment.
FIG. 1B is an enlarged view of a region a in FIG. 1A, showing an initial alignment state of the liquid crystal when no electric field is applied, and FIG. FIG. 1D is an enlarged view of region b in FIG. 1C, showing the electric field in detail. FIG. 1D is an enlarged view of region b in FIG. 1C. FIG. (F) Diagram showing electric field and transmittance distribution in liquid crystal display device of Embodiment 1 (g) Diagram showing electric field and transmittance distribution in conventional liquid crystal display device

FIG. 2 is a diagram illustrating an electrode configuration near a storage capacitor portion of one pixel and an initial alignment of liquid crystal in a liquid crystal display device of Embodiment 2.

FIG. 3 is a diagram illustrating an electrode configuration near a storage capacitor portion of one pixel and a state of a liquid crystal when an electric field is applied in a liquid crystal display device according to a third embodiment.

FIG. 4 is a diagram illustrating an electrode configuration near a storage capacitor portion of one pixel and an initial alignment of liquid crystal in a liquid crystal display device of Embodiment 4.

FIG. 5A shows a liquid crystal display device according to a fifth embodiment.
FIG. 4B shows an electrode configuration near a storage capacitor portion of a pixel and a direction of an electric field. FIG. 5B shows another example of the liquid crystal display device according to the fifth embodiment.
Diagram showing the electrode configuration near the storage capacitor part of the pixel and the direction of the electric field

FIG. 6 is a diagram illustrating an electrode configuration near a storage capacitor portion of one pixel and an initial alignment of liquid crystal in a liquid crystal display device of Embodiment 6.

7A is a plan view illustrating an electrode configuration of one pixel in a conventional liquid crystal display device. FIG. 7B is an enlarged view of a region a in FIG. 7A and illustrates an initial alignment state of liquid crystal when no electric field is applied. FIG. 7C is a diagram showing the electric field direction and the orientation of the liquid crystal when the electric field is applied in FIG. 7B.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gate wiring 2 Source wiring 3 Pixel electrode 4 Common electrode 5 Thin film transistor (TFT) 6,106 Common wiring 7 Liquid crystal 8,108 Storage capacitor electrode

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Akio Takimoto 1006 Kazuma Kadoma, Kazuma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) 2H090 LA02 LA15 MA06 MB01 2H092 GA14 JA24 JA37 JA41 JB61 NA01 NA07 PA01 PA03 PA08 2H093 NA51 NC11 NC34 ND01 ND08 NE01

Claims (8)

[Claims] 1. A gate wiring and a source wiring arranged in a matrix on an opposing surface of one of two substrates sandwiching a liquid crystal layer therebetween, and respective intersections of the gate wiring and the source wiring. A switching element provided corresponding to the pixel element, a pixel electrode connected to the switching element, a common electrode formed in parallel with the pixel electrode, a common line connecting the common electrode, and a storage capacitor connected to the pixel electrode. An electrode, a liquid crystal display device including a storage capacitor portion formed by partially or entirely overlapping the storage capacitor electrode via an insulating layer on the common wiring, wherein an electrode end of the pixel electrode and the common electrode; An electric field generated between the pixel electrode and the common wiring in a direction to cancel the electric field. Method of driving a liquid crystal display device characterized by generating. 2. The liquid crystal display according to claim 1, wherein an electric field generated between the storage capacitor electrode and the common electrode is generated in a direction to cancel the electric field generated between the pixel electrode and the common wiring. How to drive the device. 3. A gate wiring and a source wiring which are arranged in a matrix on a surface of one of two substrates opposed to each other with a liquid crystal layer interposed therebetween, and respective intersections of the gate wiring and the source wiring. A switching element provided corresponding to the switching element, a pixel electrode connected to the switching element, a common electrode formed to face the pixel electrode, a common wiring connecting the common electrode, and a pixel connected to the pixel electrode. In a liquid crystal display device including a storage capacitor electrode and a storage capacitor portion formed by overlapping part or all of the storage capacitor electrode on the common wiring via an insulating layer, a voltage between the pixel electrode and the common electrode is provided. An extreme and at least one region surrounded by a wiring end of the common wiring, and a distance between an electrode end of the storage capacitor electrode and the common wiring end is alternately different for each of the regions A liquid crystal display device comprising and. 4. If the dielectric anisotropy of the liquid crystal is positive and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the common line side in the vicinity is θ, then θ> 90 °. 4. The liquid crystal display device according to claim 3, wherein a distance between an end of the storage capacitor electrode and an end of the common wiring is shorter than a region where θ <90 °. 5. If the dielectric anisotropy of the liquid crystal is negative and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the common line side in the vicinity is θ, then θ <90 °. 4. The liquid crystal display device according to claim 3, wherein the distance between the end of the storage capacitor electrode and the end of the common wiring is shorter than the region where θ> 90 °. 6. A gate wiring and a source wiring arranged in a matrix on the side of one of two substrates opposed to each other with a liquid crystal layer interposed therebetween, and respective intersections of the gate wiring and the source wiring. A switching element provided corresponding to the switching element, a pixel electrode connected to the switching element, a common electrode formed to face the pixel electrode, a common wiring connecting the common electrode, and a pixel connected to the pixel electrode. A storage capacitor electrode, a liquid crystal display device including a storage capacitor portion formed by overlapping part or all of the common wiring via an insulating layer on the storage capacitor electrode, wherein the pixel electrode, the common electrode, It has at least one or more regions surrounded by each electrode end of the storage capacitor electrode, and a distance between the storage capacitor electrode end and a common wiring end is alternately different for each of the regions. A liquid crystal display device. 7. When the dielectric anisotropy of the liquid crystal is positive and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the common line side in the vicinity is θ, θ <90 °. 7. The liquid crystal display device according to claim 6, wherein a distance between the end of the storage capacitor electrode and an end of the common wiring is shorter than a region where θ> 90 °. 8. If the dielectric anisotropy of the liquid crystal is negative and the angle between the pixel electrode and the initial alignment direction of the liquid crystal on the common line side in the vicinity is θ, then θ> 90 °. 7. The liquid crystal display device according to claim 6, wherein a distance between a pixel electrode end forming a storage capacitor portion and a common wiring end is shorter than a region where θ <90 °.