KR101963386B1 - Large Area In-Plane Switching Liquid Crystal Display - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a large-screen liquid crystal display device. A horizontal electric field type liquid crystal display device according to the present invention includes: a plurality of pixel regions arranged in a matrix manner on a substrate; A data line which is assigned to one of the two columns of the pixel columns and travels in the vertical direction on the substrate; A gate line arranged on the substrate one by one in each of the pixel rows and extending in the horizontal direction on the substrate; A horizontal pixel electrode extending in a horizontal direction on a first lateral side of the pixel region, and a vertical pixel electrode branched into the pixel region in the horizontal pixel electrode; And a common wiring extending on the substrate in parallel with the gate wiring and extending to the pixel region so as to cover the horizontal pixel electrode. The present invention provides low-power consumption by applying a double-rate structure in an in-plane switching type liquid crystal display, shields the upper and lower ends of the pixel region by using a common wiring formed on the gate metal layer, Thereby preventing degradation of image quality.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a large-screen liquid crystal display device. In particular, the present invention relates to a horizontal electric field type liquid crystal display device which prevents a luminance difference of a pixel caused by a structural problem of a double rate driving driving method for reducing driving elements by reducing the number of data lines on a large screen .

A liquid crystal display displays an image by adjusting the light transmittance of a liquid crystal using an electric field. Such a liquid crystal display device is divided into a vertical electric field system and a horizontal electric field system in accordance with the direction of the electric field for driving the liquid crystal.

In a vertical electric field type liquid crystal display device, a common electrode formed on an upper substrate and a pixel electrode formed on a lower substrate are opposed to each other, and a liquid crystal of a TN (twisted nematic) mode is driven by a vertical electric field formed therebetween. Such a vertical electric field type liquid crystal display device has a disadvantage that the aperture ratio is large, but the viewing angle is as narrow as 90 degrees.

A horizontal electric field type liquid crystal display device drives an in plane switching (IPS) mode liquid crystal by a horizontal electric field between a pixel electrode and a common electrode arranged in parallel on a lower substrate. Such a horizontal electric field type liquid crystal display device has a viewing angle of about 160 degrees, which is broader than the vertical electric field type, and has an advantage that the driving speed is fast. Therefore, a demand for a horizontal electric field type liquid crystal display device that provides a better display quality is increasing day by day.

Hereinafter, a horizontal electric field type liquid crystal display device will be described in detail. The conventional horizontal electric field type liquid crystal display panel includes a thin film transistor (TFT) array substrate, a color filter array substrate, and a liquid crystal layer interposed between the two substrates. 1 is a plan view showing a thin film transistor array substrate of a conventional horizontal electric field liquid crystal display panel. 2 is a cross-sectional view showing the structure of a thin film transistor substrate for a horizontal electric field liquid crystal display panel cut in a cutting line I-I 'in FIG.

In the horizontal electric field type liquid crystal display device shown in Figs. 1 and 2, in the liquid crystal display device of the horizontal electric field system, the pixel electrode and the common electrode are arranged on the same plane at a certain distance from each other to thereby drive the horizontal electric field liquid crystal layer And displays the image data. 1 and 2, a thin film transistor array substrate of a horizontal electric field liquid crystal display panel according to the related art includes a gate wiring GL and a data wiring DL formed so as to intersect on a lower substrate SUB, A pixel electrode PXL and a common electrode COM formed so as to form a horizontal electric field in a pixel region provided with the cross structure of the thin film transistor T and a common electrode COM connected to the common electrode COM, And a common wiring (CL) that goes to the next step.

The gate wiring GL supplies a gate signal to the gate electrode G of the thin film transistor T. [ The data line DL supplies a pixel signal to the pixel electrode PXL through the drain electrode D of the thin film transistor T. [ The gate line GL and the data line DL are formed in an intersecting structure to define a pixel region. The common line CL is formed on one side of the pixel region in parallel with the gate line GL and supplies a reference voltage for driving the liquid crystal to the common electrode COM.

The thin film transistor T responds to the gate signal of the gate line GL so that the pixel signal of the data line DL is charged and held in the pixel electrode PXL. To this end, the thin film transistor T includes a gate electrode G connected to the gate wiring GL, a source electrode S connected to the data wiring DL, and a drain electrode connected to the pixel electrode PXL D). The thin film transistor T includes an active channel layer A forming a channel between the source electrode S and the drain electrode D and an active layer A forming an ohmic contact with the source electrode S and the drain electrode D. [ And a contact layer (not shown).

The pixel electrode PXL is formed in the pixel region by being connected to the drain electrode D of the thin film transistor T through the protective film PAS and the drain contact hole DH penetrating the planarization film PAC. In particular, the pixel electrode PXL includes a horizontal pixel electrode PXLh connected to the drain electrode D and formed in parallel with the adjacent gate line GL, and a vertical pixel electrode PXLh formed in the vertical direction within the pixel region And a plurality of vertical pixel electrodes PXLv.

The common electrode COM is connected to the common wiring CL through the common contact hole CH through the gate insulating film GI, the protective film PAS and the planarization film PAC. And a portion that runs parallel to the gate wiring GL has a wider width and forms a horizontal common electrode COMh. And forms a plurality of vertical common electrodes COMv formed in the vertical direction in the pixel region by branching from the horizontal common electrode COMh. In particular, the vertical common electrode COMv is arranged in parallel with the vertical pixel electrode PXLv in the pixel region.

A horizontal electric field is formed between the vertical pixel electrode PXLv to which the pixel signal is supplied through the thin film transistor T and the vertical common electrode COMv to which the reference voltage is supplied through the common wiring CL. This horizontal electric field causes the liquid crystal molecules arranged in the horizontal direction between the thin film transistor array substrate and the color filter array substrate to rotate due to the dielectric anisotropy. The light transmittance through the pixel region is changed according to the degree of rotation of the liquid crystal molecules, thereby realizing an image.

The horizontal electric field liquid crystal display panel having the structure in which the pixel electrode PXL and the common electrode COM are spaced apart from each other by a predetermined distance on the same plane requires a horizontal common electrode COMh And the drain electrode D are overlapped to form the storage capacitor STG. The storage capacitor STG is formed in the space formed by the gate insulating film GI and the channel layer A interposed between the overlapped horizontal common electrode COMh and the drain electrode D.

As described above, the in-plane switching type horizontal electric field liquid crystal display device which is capable of high-speed driving and has a wide viewing angle is most suitable for applications such as a large-sized TV. As these demands increase, there is a further need to improve power consumption, image quality, and manufacturing cost as display panels become larger.

As a technical requirement, a double rate drive (DRD) for transferring information to two pixels connected to different gate lines through a single data line has been proposed. Further, a liquid crystal display device which drives a liquid crystal display panel in dot-inversion using a source drive integrated circuit that outputs a data voltage whose polarity is inverted with a column inversion is proposed. However, in the DRD dot inversion driving method, a luminance difference occurs in the left and right pixels with respect to the data line. Such a luminance difference is an indispensable task to overcome because it causes a screen failure.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a large screen liquid crystal display device of in-plane switching type that applies double rate driving to reduce data driving elements. It is another object of the present invention to provide a large-screen liquid crystal display device having a structure for preventing a luminance difference problem for each pixel caused by applying a double-rate driving method to an in-plane switching method.

In order to achieve the above object, a horizontal electric field type liquid crystal display according to the present invention includes: a plurality of pixel regions arranged in a matrix manner on a substrate; A plurality of data lines arranged in the vertical direction on the substrate; A gate line arranged on the substrate one by one in each of the pixel rows and extending in the horizontal direction on the substrate; A horizontal pixel electrode extending in a horizontal direction on a first lateral side of the pixel region, and a vertical pixel electrode branched into the pixel region in the horizontal pixel electrode; And a common wiring extending on the substrate in parallel with the gate wiring and extending to the pixel region so as to cover the horizontal pixel electrode.

And the common wiring is formed so as to cover a range extending from 3 占 퐉 to 6 占 퐉 from the end of the horizontal pixel electrode to the pixel region.

A horizontal common electrode extending in the horizontal direction from a second lateral side of the pixel region; And a vertical common electrode branched from the horizontal common electrode into the pixel region and spaced apart from the vertical pixel electrode by a predetermined distance. The common wiring and the horizontal common electrode are connected to the contact hole with an insulating film therebetween, and the common wiring is extended to the pixel region so as to cover the horizontal common electrode.

And the common line is formed so as to cover a range extending from 3 占 퐉 to 6 占 퐉 from the end of the horizontal common electrode to the pixel region.

Wherein the common wiring is formed in the same layer as the gate wiring and includes the same opaque metal material as the gate wiring.

And a thin film transistor formed at an intersection of the data line and the gate line and connected to the pixel electrode arranged in the pixel region in any one of left and right sides of the gate line with reference to the data line .

The present invention can reduce the number of data lines by half by applying the double-rate driving to an in-plane switching type liquid crystal display device. Therefore, the data driving element can be saved, and the manufacturing cost can be saved. In addition, in order to realize the double-rate driving method, the common wiring shields the upper and lower ends of the pixel region in a structure in which the pixels are alternately turned upside down. Accordingly, it is possible to prevent the luminance deviation of each pixel, which may occur in the pixel asymmetric structure necessarily appearing by the double-rate driving method.

1 is a plan view showing a thin film transistor array substrate of a conventional horizontal electric field liquid crystal display panel.
2 is a cross-sectional view showing a structure of a thin film transistor substrate for a horizontal electric field liquid crystal display panel cut in a cutting line I-I 'in FIG.
FIG. 3 is a plan view showing a structure of a large-screen liquid crystal display apparatus of a large-screen-type in-plane switching type using double-rate driving according to a first embodiment of the present invention.
FIG. 4 is a cross-sectional view showing the structure of a pixel electrode and a common line in a horizontal electric field type liquid crystal display according to a first embodiment of the present invention, cut to a perforated line II-II 'in FIG. 3;
FIG. 5 is a cross-sectional view showing the structure of a common electrode and a common wiring in a horizontal electric field type liquid crystal display according to a first embodiment of the present invention, which is cut into a perforated line III-III 'in FIG.
FIG. 6 is a plan view showing a structure of a large-screen liquid crystal display apparatus of a large-screen-type in-plane switching type using a double-rate driving according to a second embodiment of the present invention;
FIG. 7 is a cross-sectional view showing the structure of a pixel electrode and a common wiring in a horizontal electric field type liquid crystal display according to a second embodiment of the present invention, cut along the perforated line IV-IV 'in FIG.
FIG. 8 is a cross-sectional view showing the structure of a common electrode and a common wiring in a horizontal electric field type liquid crystal display according to a second embodiment of the present invention, cut to a perforated line V-V 'in FIG.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description, a detailed description of known technologies or configurations related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured.

Hereinafter, a first embodiment of the present invention will be described with reference to Figs. 3 is a plan view showing a structure of a large-screen liquid crystal display device of a large-screen-type horizontal plane electric field in-plane switching system using double-rate driving according to a first embodiment of the present invention. FIG. 4 is a cross-sectional view showing the structure of a pixel electrode and a common line in a horizontal electric field type liquid crystal display according to a first embodiment of the present invention, cut to a perforated line II-II 'in FIG. FIG. 5 is a cross-sectional view showing the structure of a common electrode and a common wiring in a horizontal electric field type liquid crystal display according to a first embodiment of the present invention, which is cut to a perforated line III-III 'in FIG.

Referring to FIG. 3, the thin film transistor array substrate of the horizontal electric field liquid crystal display panel according to the first embodiment includes a gate wiring GL and a data wiring DL formed so as to cross on a lower substrate SUB, A pixel electrode PXL and a common electrode COM formed so as to form a horizontal electric field in a pixel region provided with the cross structure of the thin film transistor T and a common electrode COM connected to the common electrode COM, And a common wiring (CL) that goes to the next step.

The gate wiring GL supplies a gate signal to the gate electrode G of the thin film transistor T. [ The data line DL supplies a pixel signal to the pixel electrode PXL through the drain electrode D of the thin film transistor T. [ The gate line GL and the data line DL are formed in an intersecting structure to define a pixel region. The common line CL is formed on one side of the pixel region in parallel with the gate line GL and supplies a reference voltage for driving the liquid crystal to the common electrode COM.

The thin film transistor T responds to the gate signal of the gate line GL so that the pixel signal of the data line DL is charged and held in the pixel electrode PXL. To this end, the thin film transistor T includes a gate electrode G connected to the gate wiring GL, a source electrode S connected to the data wiring DL, and a drain electrode connected to the pixel electrode PXL D). The thin film transistor T includes an active channel layer A forming a channel between the source electrode S and the drain electrode D and an active layer A forming an ohmic contact with the source electrode S and the drain electrode D. [ And a contact layer (not shown).

The pixel electrode PXL is formed in the pixel region by being connected to the drain electrode D of the thin film transistor T through the protective film PAS and the drain contact hole DH penetrating the planarization film PAC. In particular, the pixel electrode PXL includes a horizontal pixel electrode PXLh connected to the drain electrode D and formed in parallel with the adjacent gate line GL, and a vertical pixel electrode PXLh formed in the vertical direction within the pixel region And a plurality of vertical pixel electrodes PXLv.

The common electrode COM is connected to the common wiring CL through the common contact hole CH through the gate insulating film GI, the protective film PAS and the planarization film PAC. And a portion that runs parallel to the gate wiring GL has a wider width and forms a horizontal common electrode COMh. And a plurality of vertical common electrodes COMv formed in the vertical direction within the pixel region by the horizontal common electrode COMh. In particular, the vertical common electrode COMv is arranged in parallel with the vertical pixel electrode PXLv in the pixel region.

A horizontal electric field is formed between the vertical pixel electrode PXLv to which the pixel signal is supplied through the thin film transistor T and the vertical common electrode COMv to which the reference voltage is supplied through the common wiring CL. This horizontal electric field causes the liquid crystal molecules arranged in the horizontal direction between the thin film transistor array substrate and the color filter array substrate to rotate due to the dielectric anisotropy. The light transmittance through the pixel region is changed according to the degree of rotation of the liquid crystal molecules, thereby realizing an image.

The structure of the horizontal electric field type liquid crystal display device for driving the double rate according to the first embodiment of the present invention is basically the same as that of the horizontal electric field type liquid crystal display device of FIG. If there is a difference, one data line DL is commonly used for the left and right pixel columns. Therefore, the number of data lines can be reduced to 1/2, and the number of data driving elements can be reduced.

In Fig. 3, the pixel on the left side is driven by the thin film transistor T connected between the data line DL arranged on the right side and the gate line GL arranged on the upper side. And the pixel on the right side is driven by the thin film transistor T connected between the same data line DL arranged on the left side and the gate line GL arranged on the lower side. Therefore, the left and right pixels are shifted up and down from each other.

In a pixel of an in-plane switching type liquid crystal display device, differences occur in brightness compared to other portions due to the structure of the pixel electrode (PXL) and the common electrode (COM) in the lower boundary portion and the upper boundary portion. Furthermore, the luminance deviations at the lower and upper sides are not the same.

In the first embodiment, since the pixel structure is inverted for each neighboring pixel, the luminance deviations of the lower side are different from each other between the left and right pixels. Also, the luminance deviation of the upper side differs between the left and right pixels. Since this portion is fabricated so as to be covered with the black matrix (BM), when it is normally produced, the brightness variation is not revealed to the spectator.

However, if the black matrix BM deviates slightly toward the upper side or the lower side due to the alignment error or the upper and lower plate cementation errors, the luminance deviation between neighboring pixels is directly transmitted to the spectator, . Will be described in more detail with reference to FIGS. 4 and 5. FIG.

4 is a cross-sectional view showing the structure of the common line CL and the pixel electrode PXL on the side where the thin film transistor T is formed. 4 shows a superposition structure of the common line CL and the horizontal pixel electrode PXLh. Referring to FIG. 4, a common line CL including an opaque metal material, which is the same material as the gate line GL, is formed on a substrate SUB. A gate insulating film GI and a protective film PAS are covered on the common wiring CL. A drain electrode D overlapping the common line CL is disposed on the protective film PAS.

A planarizing film (PAC) is deposited on the drain electrode (D). A pixel electrode PXL including a transparent conductive material, in particular, a horizontal pixel electrode PXLh is stacked on the planarizing film PAC. In particular, the horizontal pixel electrode PXLh has a structure slightly protruding from the common line CL. This is a structure that appears in a general in-plane switching type liquid crystal display device.

When the black matrix BM is normally disposed when the upper plate and the lower plate are attached to each other, both the common wiring CL and the horizontal pixel electrode PXLh are disposed inside the black matrix BM region. Therefore, the luminance variation occurring in this portion is covered by the black matrix BM. However, when the black matrix BM is arranged such that the black matrix BM deviates in the direction away from the vertical common electrode COMv, the luminance deviation between the common line CL and the horizontal pixel electrode PXLh is maintained as it is, . The common line CL is opaque because it is formed of the same material in the same layer as the gate metal, but since the horizontal pixel electrode PXLh is a transparent material, the luminance deviation is directly exposed.

5 is a cross-sectional view showing the structure of the common line CL and the common electrode PXL on the opposite side where the thin film transistor T is formed. 5 shows a superposition structure of the common line CL and the horizontal common electrode COMh. Referring to FIG. 5, a common wiring CL including opaque metal material, which is the same material as the gate wiring GL, is formed on a substrate SUB. A gate insulating film GI, a protective film PAS, and a planarization film PAC are stacked over the common wiring CL.

A pixel electrode PXL and a common electrode COM including a transparent conductive material are formed on the planarizing film PAC. Particularly, the horizontal common electrodes COMh are laminated with a structure slightly protruding from the common wiring CL. This is a structure that appears in a general in-plane switching type liquid crystal display device.

When the black matrix BM is normally disposed when the upper plate and the lower plate are attached to each other, both the common wiring CL and the horizontal common electrode COMh are arranged in the black matrix (BM) region. Therefore, the luminance variation occurring in this portion is covered by the black matrix BM. However, when the black matrix BM is arranged such that the black matrix BM deviates in the direction away from the vertical pixel electrode PXLv, the luminance deviation between the common line CL and the horizontal common electrode COMh is maintained as it is, . The common line CL is opaque because it is formed of the same material in the same layer as the gate metal, but since the horizontal common electrode COMh is a transparent material, the luminance deviation is directly exposed.

If the luminance deviation according to FIG. 4 and the luminance deviation according to FIG. 5 are the same, the luminance variation is not well known to the spectator, and therefore, it may not be a big problem. However, there is a large difference between the luminance deviation according to Fig. 4 and the luminance variation according to Fig. Therefore, when the portions having different luminance deviation values are adjacent to the right and left, there may be a problem in image quality due to the difference in luminance deviation.

More particularly, the present invention relates to a liquid crystal display device having an electrode structure by an in-plane switching method. In the electrode structure using the FFS (Fringe Field Switching) method among the horizontal electric field systems, there is no difference in luminance deviation between the pixel upper side and the lower side. Therefore, even when the double rate driving method is used, there is no difference in luminance deviation. However, in the in-plane switching method, which is more advantageous for the larger screen than the fringe field switching method, the values of the luminance deviations occurring on the upper and lower sides of the pixels are different from each other.

That is, in the first embodiment, in the in-plane switching type liquid crystal display device for realizing a large screen, a double rate driving method is applied for the purpose of reducing the number of data driving elements and reducing the cost. In the present invention, the image quality degradation due to the difference in the luminance deviation between the pixel upper side and the lower side of the pixel generated in the in-plane switching liquid crystal display of the double rate driving type according to the first embodiment is further eliminated, An example is provided.

Hereinafter, a second embodiment of the present invention will be described with reference to Figs. 6 is a plan view showing a structure of a large-screen liquid crystal display apparatus of a large-screen-type horizontal plane electric field in-plane switching system according to a second embodiment of the present invention. FIG. 7 is a cross-sectional view showing the structure of a pixel electrode and a common wiring in a horizontal electric field type liquid crystal display according to a second embodiment of the present invention, cut along a perforated line IV-IV 'in FIG. FIG. 8 is a cross-sectional view showing the structure of a common electrode and a common line in a horizontal electric field type liquid crystal display according to a second embodiment of the present invention, which is cut along the perforated line V-V 'in FIG.

Referring to Fig. 6, the basic components are the same as the first embodiment of the present invention. Therefore, redundant description of the same portions will be omitted. If there is a difference, the second embodiment has a structure in which the width of the common line CL is further extended toward the pixel region to cover the horizontal pixel electrode PXLh and the horizontal common electrode COMh.

Will be described in more detail with reference to FIGS. 7 and 8. FIG. 7 is a cross-sectional view showing the structure of the common line CL and the pixel electrode PXL on the side where the thin film transistor T is formed. 7 shows a superposition structure of the common line CL and the horizontal pixel electrode PXLh. In the second embodiment, the common line CL has a structure slightly protruding from the horizontal pixel electrode PXLh. This is a feature proposed by the second embodiment.

When the black matrix BM is normally disposed when the upper plate and the lower plate are attached to each other, both the common wiring CL and the horizontal common electrode COMh are arranged in the black matrix (BM) region. Therefore, the luminance variation occurring in this portion is covered by the black matrix BM. Even if the black matrix BM is arranged such that the black matrix BM is shifted away from the vertical common electrode COMv, the common line CL extends from the horizontal pixel electrode PXLh toward the pixel region at a certain distance Structure. Particularly, the common line CL is arranged to a position extending 3 to 6 m further from the edge of the edge of the horizontal pixel electrode PXLh. Since the common line CL is an opaque material formed of the same material in the same layer as the gate metal, the backlight can be prevented from passing through the portion where the luminance deviation occurs. Therefore, the luminance deviation is not recognized to the viewer.

8 is a cross-sectional view showing the structure of the common line CL and the common electrode PXL on the opposite side where the thin film transistor T is formed. 8 shows a superposition structure of the common line CL and the horizontal common electrode COMh. Referring to FIG. 8, the common line CL has a structure slightly protruding from the horizontal common electrode COMh. This is a feature proposed by the second embodiment.

When the black matrix BM is normally disposed when the upper plate and the lower plate are attached to each other, both the common wiring CL and the horizontal common electrode COMh are arranged in the black matrix (BM) region. Therefore, the luminance variation occurring in this portion is covered by the black matrix BM. Even if the black matrix BM is arranged such that the black matrix BM is deviated in the direction away from the vertical pixel electrode PXLv, the common line CL is arranged at a certain distance from the edge of the horizontal common electrode COMh, As shown in Fig. Particularly, the common wiring CL is arranged from the edge of the horizontal common electrode COMh to a position extended by 3 to 6 m further. Since the common line CL is an opaque material formed of the same material in the same layer as the gate metal, the backlight can be prevented from passing through the portion where the luminance deviation occurs. Therefore, the luminance deviation is not recognized to the viewer.

As described above, in the present invention, a data rate driving element can be reduced by applying a double rate structure in an in-plane switching type liquid crystal display. Further, by shielding the upper and lower ends of the pixel region by using the common wiring formed on the gate metal layer, it is possible to prevent the brightness unevenness from being perceived by the viewer.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the present invention should not be limited to the details described in the detailed description, but should be defined by the claims.

GL: gate wiring DL: data wiring
CL: common wiring T: thin film transistor
G: gate electrode S: source electrode
D: drain electrode A: semiconductor channel layer
GI: gate insulating film SUB: substrate
Cst, STG: auxiliary capacity PAS: protective film
PXL: pixel electrode COM: common electrode
PXLh: Horizontal pixel electrode PXLv: Vertical pixel electrode
COMh: horizontal common electrode COMv: vertical common electrode
DH: drain contact hole CH: common contact hole

Claims (8)

A plurality of pixel regions arranged in a matrix manner on a substrate;
A data line extending in the vertical direction on the substrate so as to include a first pixel region allocated to one of the two rows of the matrix-type pixel columns and arranged at one side thereof and a second pixel region disposed at the other side;
A gate wiring arranged to be arranged one row in the row among the matrix-type pixel rows and to move in the horizontal direction on the substrate;
A first horizontal pixel electrode extending in a horizontal direction on a first lateral side of the first pixel region and a first vertical pixel electrode branched into the first pixel region in the first horizontal pixel electrode;
A first horizontal common electrode extending in a horizontal direction on a second transverse side of the first pixel region and a first vertical common electrode branched in the first horizontal pixel electrode from the first horizontal common electrode, A first vertical common electrode arranged to be arranged;
A first common wiring extending on the substrate in parallel with the gate wiring and extending to the first pixel region so as to overlap with the first horizontal pixel electrode; And
And a second common wiring extending in parallel with the gate wiring on the substrate and extending to the first pixel region to overlap with the first horizontal common electrode.
The method according to claim 1,
Wherein the first common wiring line is formed so as to overlap with the first pixel region extending from the end of the first horizontal pixel electrode to a range extending from 3 占 퐉 to 6 占 퐉.
The method according to claim 1,
The first common wiring and the first horizontal common electrode are connected to the contact hole with an insulating film interposed therebetween and the second common wiring is extended to the first pixel region so as to overlap with the first horizontal common electrode The liquid crystal display device comprising:
The method of claim 3,
Wherein the second common line is formed so as to overlap with the first pixel region from the end of the first horizontal common electrode to a range extending from 3 占 퐉 to 6 占 퐉.
The method according to claim 1,
The first and second common wirings are formed in the same layer as the gate wirings,
Wherein the gate insulating layer includes an opaque metal material that is the same as the gate wiring.
The method according to claim 1,
And a thin film transistor formed at an intersection of the data line and the gate line and connected to the first horizontal pixel electrode arranged in the first pixel region in one of the left and right columns with respect to the data line And the horizontal electric field type liquid crystal display device.
The method according to claim 1,
Two pixel regions adjacent in the horizontal direction are always arranged between adjacent data lines,
And one pixel region is always disposed between adjacent gate lines.
8. The method of claim 1 or 7,
A second horizontal pixel electrode extending in a horizontal direction on a first lateral side of the second pixel region, and a second vertical pixel electrode branched into the second pixel region in the second horizontal pixel electrode; And
A second horizontal common electrode extending in the horizontal direction on the second transverse side of the second pixel region and a second horizontal common electrode branched into the second pixel region from the second horizontal common electrode and spaced apart from the second vertical pixel electrode by a predetermined distance Further comprising a second vertical common electrode arranged to be arranged,
Wherein the first common wiring extends to the second pixel region so as to overlap with the second horizontal common electrode,
And the second common line extends to the second pixel region so as to overlap with the second horizontal pixel electrode.

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