KR20120116575A - In-plane switching mode liquid crystal display device - Google Patents

Abstract

PURPOSE: An in-plane switching mode liquid crystal display device is provided to prevent bad VAC(Viewing Angle Cross) and an increase of consumed currents. CONSTITUTION: A pixel electrode(121) is connected to a thin film transistor. The pixel electrode generates a horizontal electric field with a common electrode in a pixel area. An alignment film is formed on a frontal surface of a first substrate to cover the common electrode and the pixel electrode. The alignment film is rubbed in a first direction. A liquid crystal layer(130) is placed between the first substrate and a second substrate. The dielectric anisotropy of the liquid crystal layer is minus.

Description

In-plane switching mode liquid crystal display device

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transverse electric field liquid crystal display device, and more particularly, to a transverse electric field liquid crystal display device capable of preventing a defective viewing angle cross (VAC) without reducing the aperture ratio.

Liquid crystal display devices (LCDs), which are used for TVs and monitors due to their high contrast ratio and are advantageous for displaying moving images, are characterized by optical anisotropy and polarization of liquid crystals. The principle of image implementation by

Such a liquid crystal display is an essential component of a liquid crystal panel bonded through a liquid crystal layer between two side-by-side substrates, and realizes a difference in transmittance by changing an arrangement direction of liquid crystal molecules with an electric field in the liquid crystal panel. do.

Recently, an active matrix liquid crystal display device that drives liquid crystal with an electric field formed up-down has been widely used because of its excellent resolution and video performance. However, liquid crystal driving due to an electric field that is applied up-down has a disadvantage in that the viewing angle characteristics are inferior.

Accordingly, various methods have been proposed in order to overcome the disadvantage that the viewing angle is narrow. Among them, a liquid crystal driving method by a transverse electric field is attracting attention.

In particular, a fringe field switching mode liquid crystal display device capable of precisely controlling liquid crystals and improving aperture ratio and transmittance is widely used.

Hereinafter, a transverse field type liquid crystal display device will be described in more detail as an example of the fringe field switching mode liquid crystal display device which is most widely used.

1 is a schematic cross-sectional view of a typical fringe field switching mode liquid crystal display.

As illustrated, the fringe field switching mode liquid crystal display device 10 has the first substrate 1, which is an array substrate, and the second substrate 2, which is a color filter substrate, facing each other, facing each other, and the first and second substrates. The liquid crystal layer 3 is interposed between (1, 2).

In this case, the plurality of gate wirings (not shown) and the common wirings (not shown) adjacent to the gate wirings (not shown) configured to be parallel to the gate substrate (not shown) spaced at predetermined intervals on the first substrate 1. And a data wiring 4 intersecting the two wirings (not shown and not shown) and particularly defining the pixel area P by crossing the gate wiring (not shown).

A thin film transistor Tr is formed in the switching region TrA, which is an intersection point of the gate wiring (not shown) and the data wiring 4 of each pixel region P, and is substantially in the display region AA where an image is realized. The pixel electrode 21 and the common electrode 25 are formed.

The thin film transistor Tr includes a gate electrode 11, a gate insulating film 13, a semiconductor layer 15, and source and drain electrodes 17 and 19.

The pixel electrode 21 has a plate shape electrically connected to the drain electrode 19 of the thin film transistor Tr.

The common electrode 25 is positioned on the pixel electrode 21 with the passivation layer 23 interposed therebetween, and the common electrode 25 is spaced apart from each other by a plurality of bars corresponding to each pixel area P. The opening OP of the form is provided.

Accordingly, a voltage is applied to the pixel electrode 21 and the common electrode 25 to form a fringe field.

In addition, a black matrix 31 having an opening corresponding to the pixel region P is formed on the second substrate 2 facing the first substrate 1. The color filter layer 33 including the green and blue color filters is formed.

The overcoat layer 35 is formed on the black matrix 31 and the color filter layer 33.

As described above, the fringe field switching mode liquid crystal display 10 forms the pixel electrode 21 and the common electrode 25 on the same substrate 1 and is formed by the fringe field formed between the two electrodes 21 and 25. By driving the liquid crystal molecules, the viewing angle of the liquid crystal display device can be widened.

On the other hand, the fringe field switching mode liquid crystal display device 10 has a stepped portion formed by each electrode and wiring, so that an abnormal distribution of an electric field occurs and liquid crystal molecules do not operate normally, thereby causing light leakage. The phenomenon occurs.

Therefore, the black matrix 31 is formed to prevent light from passing through the second substrate 2 in correspondence with the portions in which the irregularly operated liquid crystal is formed, in particular, the gate wiring (not shown) and the data wiring 4. .

In particular, the black matrix 31 is formed so as to correspond to the data wiring 4 so as to cover the data wiring 4 and the common electrode 25 located on both sides thereof sufficiently.

In this case, the black matrix 31 formed corresponding to the data line 4 has a viewing angle cross where light leakage is observed according to a viewer's viewing angle through a spaced area between the data line 4 and the common electrode 25. In order to prevent defects, the VAC margin is formed to further have a viewing angle cross margin (D), which causes a problem of encroaching on the aperture ratio of the liquid crystal display device 10.

In addition, although a black matrix 31 having a VAC margin D that shields a spaced area between the data line 4 and the common electrode 25 has been conventionally formed, light leakage is observed according to the viewing angle of the observer. There is a problem that a bad VAC occurs.

Recently, in order to prevent such a problem, a common wiring (not shown) overlapping with the pixel electrode 21 to form a storage capacitor (not shown) is further formed under the data wiring 4 to thereby provide a common wiring (not shown). By preventing light leakage from the spaced area between the data wiring 4 and the common electrode 25 through the structure has been proposed to prevent the VAC failure.

At this time, the black matrix 31 does not have to be formed to have the VAC margin D, thereby improving the aperture ratio.

However, in this structure, the common wiring (not shown) is positioned below the data wiring 4, so that the common wiring (not shown) and the data wiring 4 use the gate insulating film 13 interposed therebetween as a dielectric layer. Parasitic capacity is achieved.

This parasitic capacitance acts as a resistor to generate a signal delay of the data wiring 4 and increase the current consumption. This causes a problem that affects reliability, and furthermore, a problem that causes disconnection of the data wiring 4.

Disclosure of Invention The present invention has been made to solve the above problems, and a first object of the present invention is to prevent a failure of a viewing angle cross (VAC) of a transverse electric field type liquid crystal display and to prevent a signal delay failure and an increase in current consumption of data wiring. It is done.

Accordingly, a second object of the present invention is to provide a transverse electric field liquid crystal display device having improved aperture ratio and improved display quality.

In order to achieve the object as described above, the present invention comprises a first substrate and a second substrate; A gate wiring and a common wiring formed on the first substrate facing the second substrate, and a common electrode formed by branching from the common wiring; A data line crossing the gate line and defining a pixel area; A thin film transistor formed at an intersection of the gate line and the data line; A pixel electrode connected to the thin film transistor and generating a horizontal electric field with the common electrode in the pixel region; An alignment layer formed on an entire surface of the first substrate so as to cover the common electrode and the pixel electrode and rubbed in the first direction; Provided is a transverse electric field type liquid crystal display device interposed between the first and second substrates and including a liquid crystal layer having a negative property of dielectric anisotropy.

In this case, the common electrode is positioned at the outermost portion of each pixel area, has a bar-shaped opening in a direction corresponding to the gate wiring, and the pixel electrode has a plurality of bar-shaped openings. It is formed, and are formed to cross the bar-shaped opening of the common electrode.

The bar-shaped openings of the common electrode and the pixel electrode are formed to be inclined at an angle with respect to the gate wiring, and the common electrode and the pixel electrode are formed on the same layer or have a protective layer therebetween. Is formed.

In addition, the pixel electrode has a plate shape, and is formed with the common electrode and the protective layer interposed therebetween, and the bar-shaped opening of the common electrode is formed to be inclined at a predetermined angle with respect to the gate wiring, and the thin film The transistor includes a gate electrode connected to a gate wiring, a source electrode and a drain electrode connected to the data wiring, and a semiconductor layer.

The pixel electrode is connected to the drain electrode, and a black matrix having an opening is formed on the second substrate facing the first substrate, and the color filter layers of red, green, and blue are formed in the opening.

In addition, the width of the black matrix corresponding to the data line is equal to or smaller than the distance between pixel electrodes of neighboring pixel regions with the data line therebetween.

As described above, according to the present invention, by forming a negative liquid crystal having a dielectric anisotropy equal to the rubbing direction for inducing an initial arrangement and the direction of an electric field for determining the arrangement direction of the liquid crystal when voltage is applied. By doing so, it is possible to prevent the occurrence of VAC failure, and to omit the VAC margin for preventing the VAC failure in which light leakage is observed, thereby improving the aperture ratio of the liquid crystal display device.

In addition, there is an effect that it is possible to prevent problems such as signal delay of data wiring or increase of current consumption.

1 is a cross-sectional view schematically showing a typical fringe field switching mode liquid crystal display device.
2 is a plan view schematically illustrating a portion of an array substrate of a fringe field switched mode liquid crystal display according to an exemplary embodiment of the present invention.
3A to 3B are plan views showing changes in arrangement of liquid crystal molecules depending on whether an electric field is applied according to an embodiment of the present invention.
4A is a cross-sectional view illustrating a change in arrangement of liquid crystal molecules when an electric field is applied to a typical fringe field switching mode liquid crystal display device.
4B is a cross-sectional view illustrating a change in arrangement of liquid crystal molecules when an electric field is applied to a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention.
5 is a schematic cross-sectional view of a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention.
6A and 6B illustrate results of measuring whether VAC defects occur in a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

2 is a plan view schematically illustrating a part of an array substrate of a fringe field switching mode liquid crystal display device according to an exemplary embodiment of the present invention, and FIGS. 3A to 3B illustrate liquid crystal molecules according to whether an electric field is applied according to an exemplary embodiment of the present invention. It is a top view which shows the change of arrangement.

As shown in FIG. 2, the array substrate 101 for a fringe field switching mode liquid crystal display according to the exemplary embodiment of the present invention has a plurality of gate wirings 102 extending in a first direction, and a plurality of gates. A plurality of data lines 104 are formed extending in the second direction to intersect the wiring 102 to define the plurality of pixel regions P. As shown in FIG.

The common wiring 106 is formed between the gate wiring 102 and the gate wiring 102 spaced apart from the top and bottom in the same first direction as the gate wiring 102 to cross the pixel region P.

In addition, each pixel region P is connected to the gate wiring 102 and the data wiring 104, and has a gate electrode 111, a gate insulating film 113 (see FIG. 5), and an active layer 115a of pure amorphous silicon. 5) and a semiconductor layer 115 including an ohmic contact layer 115b (see FIG. 5) of impurity amorphous silicon, and a thin film transistor Tr including source and drain electrodes 117 and 119 spaced apart from each other. It is.

In addition, a plate-shaped pixel electrode 121 connected to the drain electrode 119 of the thin film transistor Tr is formed in each pixel region P, and a passivation layer 123 (FIG. 5) is formed on the pixel electrode 121. The common electrode 125 is formed therebetween.

The common electrode 125 has a plurality of bar openings OP that are spaced apart from each other to correspond to each pixel area P. FIG.

Here, the bar-shaped opening OP of the common electrode 125 is configured in a horizontal direction perpendicular to the data line 104 and has a predetermined interval inclination about the gate line 102. ) Is designed to be symmetrical up and down.

Accordingly, a voltage is applied to the pixel electrode 121 and the common electrode 125 to form a fringe field.

Meanwhile, in the drawing, although the plurality of openings OP having a bar shape are formed in the common electrode 125, as a further modification, the plurality of openings OP formed in the common electrode 125 of each pixel region P are shown. The opening OP may be omitted to correspond to the common electrode 125 and may be formed with respect to the pixel electrode 121.

In addition, both the common electrode 125 and the pixel electrode 121 may be formed to have a plurality of bar openings OP, and the openings OP may be alternately formed.

Although not shown in the drawings, an alignment layer is formed on the entire surface of the substrate 101 covering the pixel electrode 121, and the liquid crystal 130 (see FIG. 5) is positioned on the alignment layer.

In this case, the liquid crystals 130 (see FIG. 5) positioned on the alignment layer have a negative property in which dielectric anisotropy is negative, and the liquid crystal molecules (see FIG. 5) of the negative liquid crystals 130 (see FIG. 5). 131 arranges the direction of the electric field and the long axis of the liquid crystal molecules 131 vertically.

The alignment layer is rubbed in the same direction as an electric field formed between the pixel electrode 121 and the common electrode 125. That is, the initial alignment of the negative liquid crystal 130 (refer to FIG. 5) of the present invention is aligned in the same direction as the direction of the electric field L formed between the pixel electrode 121 and the common electrode 125.

Through this, the fringe field switching mode liquid crystal display device of the present invention can prevent the VAC failure. As a result, the aperture ratio of the liquid crystal display device is improved.

In addition, it is possible to prevent a problem such as a signal delay of the data line 104 from occurring or an increase in current consumption.

That is, in the fringe field switching mode liquid crystal display of the present invention, the liquid crystal molecules 131 of the negative liquid crystal 130 having negative dielectric anisotropy (see FIG. 5) are disposed between the pixel electrode 121 and the common electrode 125. When the initial alignment is performed in the same direction as that of the electric field to be formed, as shown in FIG. 3A, the liquid crystal molecules (eg, in an off state in which the electric field L is not applied between the pixel electrode 121 and the common electrode 125). The array direction of the 131 is arranged in the same direction as the array direction of the initial alignment layer (not shown).

3B, when an electric field L is formed between the pixel electrode 121 and the common electrode 125 by applying a voltage to the pixel electrode 121 and the common electrode 125, the dielectric anisotropy is obtained. The long axis of the liquid crystal molecules 131 is arranged in a direction perpendicular to the direction in which the electric field is applied to the liquid crystal molecules 131 of the negative negative liquid crystal 130 (see FIG. 5).

Accordingly, in the fringe field switching mode liquid crystal display of the present invention, the rubbing direction for inducing the initial arrangement of the liquid crystals 130 (see FIG. 5) and the direction of the electric field L for determining the arrangement direction of the liquid crystal molecules 131 when voltage is applied. And the liquid crystal molecules 131 are arranged in a direction perpendicular to the direction in which the electric field is applied, thereby preventing occurrence of VAC defects, thereby preventing black defects. The formation range of FIG. 5 can be reduced, thereby improving the aperture ratio of the liquid crystal display device.

In addition, since there is no need to provide a common wiring 106 at the lower portion of the data wiring 104 to prevent VAC failure, the data wiring 104 and the common wiring 106 connect the gate insulating film 113 (see FIG. 5). By generating the parasitic capacitance as the dielectric layer, it is possible to prevent problems such as signal delay of the data wiring 104 or increase in current consumption due to the parasitic capacitance.

This will be described in more detail with reference to FIGS. 4A to 4B.

4A is a cross-sectional view illustrating a change in arrangement of liquid crystal molecules when an electric field is applied to a typical fringe field switching mode liquid crystal display, and FIG. 4B is an arrangement of liquid crystal molecules when an electric field is applied to a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention. A cross section showing the change.

As illustrated in FIG. 4A, when a voltage is applied to the pixel electrode 121 and the common electrode 125, the liquid crystal display is disposed between the pixel electrode 121 and the common electrode 125. The molecules 131 have the long axes of the liquid crystal molecules 131 arranged in parallel in the direction in which the electric field is applied by the electric field L formed by the pixel electrode 121 and the common electrode 125.

However, in the process of forming the electric field horizontally between the pixel electrode 121 and the common electrode 125, the liquid crystal molecules 131 positioned close to the upper portions of the pixel electrode 121 and the common electrode 125 are vertically placed. Will occur.

Through this area, light leakage occurs.

Therefore, conventionally, on the second substrate (2 of FIG. 1) corresponding to a portion where the irregularly operated liquid crystal (3 of FIG. 1) is formed, particularly the gate wiring (not shown) and the data wiring (4 of FIG. 1). The black matrix (21 in FIG. 1) is formed to prevent light from passing through.

In particular, in response to the data wiring (4 in FIG. 1), to prevent VAC defects in which light leakage is observed depending on the viewing angle of the viewer through a spaced area between the data wiring (4 in FIG. 1) and the common electrode (25 in FIG. 1). To this end, a black matrix (21 in FIG. 1) having a VAC margin (D in FIG. 1) is formed to sufficiently cover the data wiring (4 in FIG. 1) and the common electrode (25 in FIG. 1) positioned on both sides thereof. Doing.

As a result, the aperture ratio of the liquid crystal display device is lowered.

In addition, when a common wiring (not shown) is provided below the data wiring (4 in FIG. 1) to prevent VAC failure, the data wiring (4 in FIG. 1) and the common wiring (not shown) may be connected to the gate insulating film (FIG. Since parasitic capacitance is generated using 13) as the dielectric layer, problems such as signal delay of the data wiring (4 in FIG. 1) or increase in current consumption occur due to the parasitic capacitance.

On the contrary, as shown in FIG. 4B, in the fringe field switching mode liquid crystal display according to the exemplary embodiment of the present invention, when a voltage is applied to the pixel electrode 121 and the common electrode 125, the liquid crystal molecules 131 are pixels. The long axis of the liquid crystal molecules 131 is vertically arranged in the direction in which the electric field is applied by the electric field L formed by the electrode 121 and the common electrode 125.

Accordingly, in the fringe field switching mode liquid crystal display according to the exemplary embodiment of the present invention, the pixel electrode 121 and the common electrode 125 are formed in the process of forming the electric field L of the pixel electrode 121 and the common electrode 125. The liquid crystal molecules 131 positioned close to the upper portion of the liquid crystal molecules 131 do not occur vertically. That is, light leakage does not occur through the area thereof.

Through this, the fringe field switching mode liquid crystal display device according to the embodiment of the present invention can omit the VAC margin (D of FIG. 1) to prevent VAC defects in which light leakage is observed, thereby improving the aperture ratio of the liquid crystal display device. Since the common wiring (106 in FIG. 2) does not need to be provided below the data wiring (104 in FIG. 2), problems such as signal delay or increase in current consumption of the data wiring (104 in FIG. 2) occur. It can be prevented from occurring.

5 is a schematic cross-sectional view of a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention.

As illustrated, in the fringe field switching mode liquid crystal display device 100 according to the exemplary embodiment of the present invention, the first substrate 101, which is an array substrate, and the second substrate 201, which is a color filter substrate, are spaced apart from each other. The liquid crystal layer 130 is interposed between the first and second substrates 101 and 201.

In this case, the plurality of gate wirings 102 (FIG. 2) and the gate wirings (102 of FIG. 2) configured to be parallel to the first substrate 101 at predetermined intervals are arranged in parallel with the gate wirings (102 of FIG. 2). The data line 104 intersects the common wiring (106 in FIG. 2) and the two wirings (102, 106 in FIG. 2) and particularly intersects with the gate wiring (102 in FIG. 2) to define the pixel region P. Consists of.

A thin film transistor Tr is formed in the switching region TrA, which is an intersection point of the gate wiring 102 (see FIG. 2) and the data wiring 104 of each pixel region P, and the display area AA in which an image is substantially realized. ), A pixel electrode 121 and a common electrode 125 are formed.

The thin film transistor Tr includes the gate electrode 111, the gate insulating layer 113, the semiconductor layer 115, and the source and drain electrodes 117 and 119.

The pixel electrode 121 has a plate shape electrically connected to the drain electrode of the thin film transistor Tr, and the common electrode 125 is positioned on the pixel electrode 121 with a passivation layer 123 therebetween. The common electrode 125 has a plurality of bar openings OP that are spaced apart from each other to correspond to each pixel area P.

Accordingly, a voltage is applied to the pixel electrode 121 and the common electrode 125 to form a fringe field.

In this case, since the data line 104 is formed while defining the pixel area P, the data line 104 is formed at the boundary between the adjacent pixel areas P. In this case, the data line 104 is the outermost angle of each pixel area P. It is positioned between the common electrode 125 formed in the.

Among the common electrodes 125, the common electrode 125 positioned at the outermost portion of each pixel region P includes a data line 104 formed below and a portion of the common electrode 125 to improve the aperture ratio in the pixel region P. FIG. Are overlapping and forming.

In addition, a black matrix 221 having an opening corresponding to the pixel area P is formed on the second substrate 201 facing the first substrate 101, and the red matrix is sequentially arranged in correspondence with these openings. The color filter layer 223 including the green and blue color filters is formed.

An overcoat layer 225 is formed on the color filter layer 223.

In this case, in the fringe field switching mode liquid crystal display 100 of the present invention, the pixel electrode 121 of the pixel region P adjacent to each other with the width S1 of the black matrix 221 between the data lines 104 interposed therebetween. It may be formed equal to or narrower than the interval (S2) between.

This is because the fringe field switching mode liquid crystal display 100 of the present invention does not have to have a separate VAC margin (D in FIG. 1).

That is, a black matrix (31 in FIG. 1) covering the data electrode (4 in FIG. 1) and the common electrode (25 in FIG. 1) positioned on both sides thereof is positioned to provide data wiring (4 in FIG. 1). Although the VAC defect in which light leakage is observed according to the viewing angle of the observer is prevented through a spaced area between the common electrode (25 of FIG. 1), the present invention provides a liquid crystal interposed between the first and second substrates 101 and 201. The layer 130 has a negative property in which the dielectric anisotropy is negative, and the initial orientation of the negative liquid crystal 130 of the present invention is between the pixel electrode 121 and the common electrode 125. By aligning in the same direction as the direction of the electric field L to be formed, it is possible to prevent the occurrence of VAC defects, and it is not necessary to provide a separate VAC margin (D in FIG. 1).

Therefore, the fringe field switching mode liquid crystal display 100 of the present invention improves the aperture ratio.

In addition, since the common wiring (106 in FIG. 2) does not need to be provided under the data wiring 104 in order to prevent VAC failure, the data wiring 104 and the common wiring (106 in FIG. 2) are formed on the gate insulating film 113. By preventing the parasitic capacitance from forming a dielectric layer, it is possible to prevent problems such as signal delay of the data wiring 104 or increase in current consumption due to the parasitic capacitance.

6A and 6B illustrate results of measuring whether a VAC defect occurs in a fringe field switching mode liquid crystal display according to an exemplary embodiment of the present invention.

6A and 6B, by forming the rubbing direction for inducing the initial arrangement of the negative liquid crystal (130 in FIG. 5) and the direction of the electric field for determining the arrangement direction of the liquid crystal (130 in FIG. 5) when voltage is applied, It can be seen that the VAC failure does not occur even when the observer is at the viewing angle of the side.

As described above, the fringe field switching mode liquid crystal display (100 in FIG. 5) of the present invention has a rubbing direction for inducing an initial arrangement of the negative liquid crystal (130 in FIG. 5) and the liquid crystal (130 in FIG. 5) upon application of voltage. By forming the direction of the electric field which determines the arrangement direction in the same manner, it is possible to prevent the occurrence of VAC failure.

As a result, the VAC margin (D of FIG. 1) may be omitted to prevent VAC defects in which light leakage is observed, thereby improving the aperture ratio of the liquid crystal display (100 of FIG. 5), and the data wiring (104 of FIG. 2). Since the common wiring (106 in FIG. 2) does not need to be provided below, it is possible to prevent problems such as signal delay of the data wiring (104 in FIG. 2) or increase in current consumption.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

121: pixel electrode, 125: common electrode, 131: liquid crystal molecule
L: Electric field

Claims (10)

A first substrate and a second substrate;
A gate wiring and a common wiring formed on the first substrate facing the second substrate, and a common electrode formed by branching from the common wiring;
A data line crossing the gate line and defining a pixel area;
A thin film transistor formed at an intersection of the gate line and the data line;
A pixel electrode connected to the thin film transistor and generating a horizontal electric field with the common electrode in the pixel region;
An alignment layer formed on an entire surface of the first substrate so as to cover the common electrode and the pixel electrode and rubbed in the first direction;
A liquid crystal layer interposed between the first and second substrates and having a negative property in which dielectric anisotropy is negative
Transverse electric field type liquid crystal display device comprising a.
The method of claim 1,
And the common electrode is positioned at the outermost portion of each pixel area and has a bar-shaped opening in a direction corresponding to the gate wiring.
The method of claim 2,
And the pixel electrode is formed to have a plurality of bar-shaped openings and is alternately formed with the bar-shaped openings of the common electrode.
The method of claim 3, wherein
And a bar-shaped opening of the common electrode and the pixel electrode is inclined at a predetermined angle with respect to the gate wiring.
The method of claim 3, wherein
And the common electrode and the pixel electrode are formed on the same layer or have a protective layer interposed therebetween.
The method of claim 5, wherein
The pixel electrode has a plate shape and is formed with the common electrode and a protective layer interposed therebetween, and a bar-shaped opening of the common electrode is formed to be inclined at a predetermined angle with respect to the gate wiring. .
The method of claim 1,
The thin film transistor includes a gate electrode connected to a gate wiring, a source electrode and a drain electrode connected to the data wiring, and a semiconductor layer.
The method of claim 7, wherein
And the pixel electrode is connected to the drain electrode.
The method of claim 1,
And a black matrix having an opening formed on the second substrate facing the first substrate, wherein a color filter layer of red, green, and blue is formed in the opening.
The method of claim 9,
And a width of the black matrix corresponding to the data line is equal to or smaller than a distance between pixel electrodes of adjacent pixel regions with the data line therebetween.

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