Liquid crystal display device

Abstract

The utility model provides a liquid crystal display device which is provided with a liquid crystal display panel, the liquid crystal display panel comprises a first substrate, the first substrate comprises a plurality of data lines and a plurality of scanning lines, the data lines and the scanning lines are divided into a plurality of pixels, the data lines and the scanning lines are orthogonal, dummy electrodes are arranged in the pixels and adjacent to the data lines, and the dummy electrodes are arranged on the first substrate. The dummy electrode is electrically isolated from the data line; a second substrate that faces the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a plurality of spacer columns configured to maintain unit gaps of the plurality of pixels, each of the spacer columns is aligned with the dummy electrode in each of the pixels when the second substrate and the first substrate are bonded, and the data line includes a plurality of main portions and a plurality of first branch portions electrically connected to each other, the first branch part is arranged adjacent to the dummy electrode, and the two ends of the first branch part are connected with the two adjacent main parts respectively.

Description

Technical Field

[0001] The present application relates to a liquid crystal display device having a liquid crystal display panel. Background Art

[0002] In the manufacturing process of the liquid crystal display device, an array substrate and a color filter substrate are first manufactured separately, and then the array substrate and the color filter substrate are aligned opposite to each other, and liquid crystal is injected between the array substrate and the color filter substrate to form a liquid crystal display panel. Finally, a liquid crystal display device including a liquid crystal display panel and a backlight unit is formed.

[0003] In a liquid crystal display panel, in order to maintain a uniform liquid crystal cell gap, it is necessary to arrange a plurality of spacers distributed in an array between the array substrate and the color filter substrate, so that one end of the spacer is usually fixed on the color filter substrate and the other end abuts on the array substrate, so that a certain distance is maintained between the array substrate and the color filter substrate. Traditionally, beads and the like are dispersed in the liquid crystal layer as spacers. However, in recent years, in order to more accurately control the gap between the array substrate and the color filter substrate, columnar spacers are formed on the color filter substrate, and the columnar spacers are used to control the gap between the array substrate and the color filter substrate.

[0004] In addition, the uppermost layer of the color filter substrate is usually a common electrode layer formed on the entire surface.

[0005] There is a situation where the spacer column is positionally offset during the process of forming the spacer column on the color filter substrate and during the process of aligning the array substrate and the color filter substrate. When the array substrate and the color filter substrate are aligned, the spacer column that is positionally offset relative to the array substrate sometimes abuts against the insulating layer of the upper layer of the signal line on the array substrate and damages the insulating layer, causing the signal line to short-circuit with the common electrode layer, making the liquid crystal display panel unable to work. Utility Model Content

[0006] The utility model is completed based on the above-mentioned problem. One aspect of the utility model provides a liquid crystal display device, which has a liquid crystal display panel, the liquid crystal display panel comprising: a first substrate, which includes a plurality of data lines and a plurality of scan lines that divide a plurality of pixels, the data lines and the scan lines are orthogonal, in each of the pixels, a dummy electrode is provided adjacent to the data line, and the dummy electrode is electrically isolated from the data line; a second substrate, which is opposite to the first substrate; a liquid crystal layer, which is sandwiched between the first substrate and the second substrate; and a plurality of spacers, which are configured to maintain a unit gap of a plurality of the pixels, and when the second substrate and the first substrate are bonded, each of the spacers is aligned with the dummy electrode in each of the pixels, the data line includes a plurality of main stems and a plurality of first branch portions electrically connected to each other, the first branch portion is provided adjacent to the dummy electrode, and the two ends of the first branch portion are respectively connected to two adjacent main stems.

[0007] According to one aspect of the present invention, the short circuit abnormality of the source signal line caused by the displacement of the spacer column can be repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic plan view showing a liquid crystal display panel included in a liquid crystal display device according to one embodiment of the present application.

[0009] Figure 2 It is shown Figure 1 Ⅱ-Ⅱ line cross-sectional view.

[0010] Figure 3 It is a schematic cross-sectional view showing an example of a short-circuit abnormality and is a schematic view for explaining a method of repairing the short-circuit abnormality.

[0011] Figure 4 1 is a schematic plan view showing another example of a short-circuit abnormality and is a schematic view for explaining a method of repairing the short-circuit abnormality.

[0012] Figure 5 is a schematic diagram for explaining an example of a resistance compensation mechanism.

[0013] Figure 6 is a schematic diagram for explaining an example of a resistance compensation mechanism.

[0014] Figure 7 is a schematic diagram for explaining another example of the resistance compensation mechanism.

[0015] Figure 8 It is a schematic plan view showing a liquid crystal display panel included in a liquid crystal display device according to another embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] In addition, it should be noted that when a component is considered to be "connected" to another component, it may be directly connected to another component or there may be an intermediate component at the same time. In addition, in the drawings shown below, for the sake of clarity and simplification of the drawings, the illustration of some elements is omitted, and the length, width and thickness, etc. do not represent the actual size relationship.

[0018] [First embodiment]

[0019] 《Configuration of Liquid Crystal Display Panel 100》

[0020] Below, refer to Figure 1 and Figure 2 A liquid crystal display panel 100 included in the liquid crystal display device according to the first embodiment of the present application will be described. Figure 1 is a schematic top view showing a liquid crystal display panel 100, Figure 2 It is shown Figure 1 Ⅱ-Ⅱ line cross-sectional view.

[0021] like Figure 2 As shown, the liquid crystal display panel 100 includes an array substrate (sometimes also referred to as a "TFT substrate") 10, a color filter substrate (sometimes also referred to as an "opposing substrate") 20 opposite to the array substrate 10, a liquid crystal layer 30 disposed between the array substrate 10 and the color filter substrate 20, and a plurality of columnar spacers PS. The plurality of spacers PS are used to define the thickness of the liquid crystal layer 30 (i.e., the unit gap of each pixel).

[0022] like Figure 1 and Figure 2 As shown, the components of the array substrate 10 are supported by a light-transmitting first substrate (e.g., a glass substrate, a plastic substrate) 11. The components of the array substrate 10 include a plurality of gate signal lines (also called scanning lines) GL extending in the row direction, a plurality of source signal lines SL extending in the column direction, a plurality of pixel switch elements 101 provided at the intersections of each gate signal line GL and each source signal line SL, a pixel electrode 12, and a dummy electrode 13.

[0023] like Figure 1As shown, a plurality of pixels P are divided by a plurality of gate signal lines GL and a plurality of source signal lines SL which are orthogonal to each other, and each pixel P is provided with the above-mentioned pixel switch element 101, pixel electrode 12 and dummy electrode 13. The gate signal line GL transmits a scanning signal, scans a plurality of pixels P row by row, and controls the opening and closing of each pixel switch element 101. The source signal line SL transmits a data signal containing grayscale information. The pixel switch element 101 is usually a thin film transistor (TFT), comprising a semiconductor layer, a gate, a source electrode, and a drain electrode. However, it is not limited thereto, and an existing structure can be used. Under the control of the gate signal line GL, the pixel switch element 101 receives the data signal from the source signal line SL and outputs a grayscale value voltage to the pixel electrode 12.

[0024] In each pixel P, the pixel electrode 12 is formed entirely on the first substrate 11, and may include a plurality of slits. The pixel electrode 12 is made of a transparent conductive material, and metal oxides such as indium tin oxide, indium zinc oxide, and ZnO can be used.

[0025] The dummy electrode 13 is disposed near one side of the source signal line SL and is spaced apart from the pixel electrode 12 and the source signal line SL. In addition, the dummy electrode 13 may be made of a transparent conductive material that is the same as or different from the pixel electrode 12, but is not limited thereto. The dummy electrode 13 may also be made of a non-transparent conductive material. In addition, the dummy electrode 13 and the pixel electrode 12 may be arranged as shown in FIG. Figure 2 As shown in the figure, the dummy electrode 13 is formed in the same layer. However, it is not limited to this. The dummy electrode 13 can also be formed in other layers of the same layer as the gate signal line GL, the source signal line SL, etc. according to actual needs. In addition, the dummy electrode 13 can also be omitted according to actual needs. In addition, the dummy electrode 13 can also transmit a signal different from the pixel electrode 12 according to actual needs.

[0026] like Figure 1 As shown, the source signal line SL includes a main body SLa and a first branch SLb in each pixel P. The first branch SLb includes a first branch SLb1 and a second branch SLb2, which extend in parallel along the column direction and have their respective ends connected to the adjacent main body Sla, so that the first branch SLb1 and the second branch SLb2 are electrically connected to each other. Figure 2As shown, the source signal line SL is stacked on the pixel electrode 12 and the dummy electrode 13 via the first insulating layer 14. In addition, a second insulating layer 15 is formed on the source signal line SL. The first branch SLb1, the second branch SLb2 and the main body SLa of the source signal line SL are formed of the same material and in the same layer. For example, in the patterning process of the source signal line SL, the first branch SLb1, the second branch SLb2 and the main body SLa are patterned together. The above-mentioned dummy electrode 13 is arranged on one side of the source signal line SL, that is, on the side of the first branch SLb1 away from the second branch SLb2. The first branch portion SLb also includes a gap α arranged between the first branch SLb1 and the second branch SLb2. The gap α is along the same direction as the first branch SLb1 and the second branch SLb2. Here, the width of the gap α only needs to be set above the minimum laser cutting size.

[0027] In addition, by properly setting the sizes of the first branch SLb1 and the second branch SLb2 of the source signal line SL, it is possible to prevent the impedance mutation of the data signal line SL from affecting the charging rate of the pixel P. For example, the specific size can be determined through simulation experiments.

[0028] Preferably, when the width of the first branch SLb is set to X, the width of the first branch SLb1 is set to X1, the width of the second branch SLb2 is set to X2, and the gap between the first branch SLb1 and the second branch SLb2 is α, the following relationship is satisfied: X1+X2=X-α. That is, the width of the first branch SLb is equal to the width of the trunk SLa. By ensuring that the width X1 of the first branch SLb1 and the width X2 of the second branch SLb2 satisfy the above relationship, it is possible to prevent the impedance mutation of the data signal line SL from affecting the charging rate of the pixel P.

[0029] In addition, preferably, when the length of the main body Sla is set to Y, the length of the first branch SLb1 is set to Y1, the length of the second branch SLb2 is set to Y2, the critical dimension (Critical Dimension, CD for short) of the spacer PS is set to β, and the total length of the data signal line SL in the unit pixel is set to L, the following relationship is satisfied: (β / (L-β))≤(Y1 / Y)≤1, and (β / (L-β))≤(Y2 / Y)≤1. By ensuring that the length Y1 of the first branch SLb1 and the length Y2 of the second branch SLb2 satisfy the above relationship, it is possible to prevent the impedance mutation of the data signal line SL from affecting the charging rate of the pixel P.

[0030] In addition, by separately setting the sizes of the first branch SLb1 and the second branch SLb2 for each pixel P at different positions, it is possible to prevent the display quality from being affected by uneven charging rates of the pixels P due to different positions.

[0031] As follows, continue to refer to Figure 1 and Figure 2 , explaining the specific composition of the color filter substrate 20. The components of the color filter substrate 20 are supported by a second substrate (such as a glass substrate, a plastic substrate) 21 having light transmittance. The components of the color filter substrate 20 include a black matrix BM stacked on the second substrate 21, a color filter layer 22, and a common electrode layer 23 stacked on the color filter layer 22. The color filter layer 22 includes a plurality of color filters, each of which can select one or more colors for transmission. The common color filter layer 22 includes a red color filter, a green color filter, and a blue color filter, thereby realizing color display. In the present application, a portion of the color filter layer 22 constitutes the spacer PS.

[0032] After the array substrate 10 and the color filter substrate 20 are placed opposite to each other and attached to each other, Figure 2 As shown, the two ends of the spacer PS away from each other are respectively in contact with the array substrate 10 and the color filter substrate 20. The spacer PS is aligned with the dummy electrode 13 and is in contact with the first insulating layer 14 and the second insulating layer 15 on the dummy electrode 13. Figure 1 and Figure 2 As shown, the spacer PS and the dummy electrode 13 are disposed on one side of the source signal line SL, ie, on the side of the first branch SLb1 away from the second branch SLb2.

[0033] In addition, the spacers PS include main spacers and sub-spacers. The two ends of the spacers PS of the main spacers, which are far from each other, respectively abut against the array substrate 10 and the color filter substrate 20, and serve as support columns for determining the cell gap in the liquid crystal display panel 100. The spacers PS of the sub-spacers cannot play a decisive role in the gap of the liquid crystal display panel, and only one end abuts against the color filter substrate 20, and the other end is spaced from the array substrate 10.

[0034] exist Figure 2 , Figure 3 In the figure, the case where the spacer column PS is the main spacer column is shown, but even if the spacer column PS is a sub-spacer column, when the first branch SLb1 is formed higher, there is a case where the spacer column PS of the sub-spacer column breaks through the second insulating layer 15 on the first branch SLb1, resulting in the first branch SLb1 being electrically connected to the common electrode layer 23 on the spacer column PS. Therefore, the embodiment of the present application can also be set corresponding to the spacer column PS of the sub-spacer column.

[0035] 《Short circuit anomaly and repair》

[0036] As follows, refer to Figure 3The following describes the situation where a short circuit abnormality occurs in the present application. Assuming that the spacer column PS is displaced during the process of forming the spacer column PS on the color filter substrate 20 or during the process of attaching the array substrate 10 and the color filter substrate 20, the spacer column PS is displaced relative to the array substrate 10 toward the side where the source signal line SL is disposed. Figure 3 As shown, the spacer PS abuts against the second insulating layer 15 on the first branch SLb1 and breaks the second insulating layer 15 to electrically connect the first branch SLb1 with the common electrode layer 23 on the spacer PS, that is, the source signal line SL and the spacer PS are short-circuited.

[0037] In this application, if Figure 4 As shown, two cut-off points C1 and C2 are provided in the first branch SLb1, so that the spacer column PS is located between the two cut-off points C1 and C2. When the above short-circuit abnormality occurs, the cut-off points C1 and C2 are cut off by laser, so that the first branch SLb1 is electrically separated from the second branch SLb2 and the main body S1a. In this way, the short circuit between the source signal line SL and the common electrode layer 23 can be suppressed.

[0038] In the process of forming a liquid crystal display device, Figure 4 As shown, in Figure 3 On the basis of the spacer column PS shown, the dummy electrode 13 will be further offset, so that the dummy electrode 13 overlaps with the first branch SLb1, further increasing the situation where the spacer column PS breaks through the second insulating layer 15, resulting in the first branch SLb1 being electrically connected to the common electrode layer 23 on the spacer column PS. In this case, laser can also be used to cut off the cut-off points C1 and C2 to suppress the short circuit between the source signal line SL and the common electrode layer 23 on the spacer column PS.

[0039] According to this embodiment, by electrically separating the first branch SLb1 from the second branch SLb2 and the main body Sla, the short circuit between the source signal line SL and the common electrode layer 23 can be suppressed. Thus, the liquid crystal display panel 100 and the liquid crystal display device can be operated normally with a simple repair step, and the manufacturing cost can be suppressed.

[0040] 《Resistance compensation mechanism》

[0041] In addition, in order to prevent the resistance change caused by cutting off the first branch SLb1 from affecting the display quality, a resistance compensation mechanism is provided in the second branch SLb2. Figure 5 and Figure 6 An example illustrating the resistance compensation mechanism.

[0042] like Figure 5 and Figure 6As shown, the array substrate 10 further includes a compensation electrode 16 which is overlapped with at least a part of the second branch SLb2. In this example, the compensation electrode 16 is arranged in the lower layer of the second branch SLb2 and is arranged with the second branch SLb2 separated by the first insulating layer 14. When the cutting points C1 and C2 of the first branch SLb1 are cut off so as to electrically separate the first branch SLb1 from the second branch SLb2 and the main body S1a, a laser is applied to the portion of the first insulating layer 14 sandwiched by the compensation electrode 16 and the second branch SLb2, so that part or all of the sandwiched first insulating layer 14 is removed, and the compensation electrode 16 and the second branch SLb2 are fused together, so that the two are electrically connected, and it is possible to choose to connect in series or in parallel according to the position of the fusion, so that the resistance change caused by the separation of the first branch SLb1 is compensated by a simple process, and the design freedom is high. In addition, in this example, the compensation electrode 16 is formed in the same layer as the pixel electrode 12 and the dummy electrode 13. Therefore, when the compensation electrode 16 is made of the same material as the pixel electrode 12 and the dummy electrode 13 and is made in the same process, the increase in manufacturing processes can be suppressed. However, the compensation electrode 16 can also be made of the same material as the gate signal line GL and in the same process, which can also suppress the increase in manufacturing processes.

[0043] In addition, as long as the equivalent resistance between the compensation electrode 16 and the second branch SLb2 is equal to the equivalent resistance between the first branch SLb1 and the second branch SLb2, the size and material of the compensation electrode 16 can be set arbitrarily.

[0044] In addition, in the above example, the compensation electrode 16 is shown to be located at a lower layer than the second branch SLb2. However, the present application is not limited to this, and the compensation electrode 16 can also be located at a higher layer than the second branch SLb2. For example, the compensation electrode 16 is formed on the second insulating layer 17 on the upper layer of the second branch SLb2, so that at least a portion of the compensation electrode 16 is overlapped with the second branch SLb2 through the second insulating layer 17. Similarly, when the cut-off points C1 and C2 of the first branch SLb1 are cut off to electrically separate the first branch SLb1 from the second branch SLb2 and the main body Sla, a laser is applied to the portion of the second insulating layer 17 sandwiched by the compensation electrode 16 and the second branch SLb2, so that the sandwiched portion is eliminated, and the compensation electrode 16 is fused with the second branch SLb2, so that the two are electrically connected, compensating for the resistance change caused by the separation of the first branch SLb1.

[0045] Here, the compensation electrode 16 is pre-formed in the formation process of the array substrate 10, so that resistance compensation can be performed on the source signal line SL with minimal impact on the liquid crystal display panel and the liquid crystal display device, simplifying the repair steps and reducing the repair cost.

[0046] As follows, refer to Figure 7 Another example to illustrate the resistance compensation mechanism. Figure 6 The difference from the example is that the array substrate 10 further includes a connection portion on the basis of the compensation electrode 16 , and when the repair is not performed, the compensation electrode 16 and the second branch SLb2 are pre-connected together via the connection portion 17 .

[0047] like Figure 7 As shown, the compensation electrode 16 is arranged on the lower layer of the second branch SLb2 through the first insulating layer 14, and the connecting portion 17 is arranged on the upper layer of the second branch SLb2 through the second insulating layer 15. A first contact hole H1 is formed through the second insulating layer 15, and the connecting portion 17 is electrically connected to the second branch SLb2 through the first contact hole H1. A second contact hole H2 is formed through the first insulating layer 14, and the connecting portion 17 is electrically connected to the compensation electrode 16 through the connecting portion 17, so that the second branch SLb2 is electrically connected to the compensation electrode 16. In addition, the second insulating layer 15 may be formed as shown in FIG. Figure 7 As shown, a part of the compensation electrode 16 is not covered. However, the second insulating layer 15 may also be stacked and covered on the first insulating layer 14 covered with the compensation electrode 16. In this case, the second contact hole H2 may be formed by penetrating the first insulating layer 14 and the second insulating layer 15. In addition, the compensation electrode 16 may be formed in the same or different layer as the second branch SLb2 through the insulating layer.

[0048] In this example, when resistance compensation is not needed, the compensation electrode 16 and the second branch SLb2 are electrically separated by laser cutting the connection portion 17 which serves as the electrical connection path between the compensation electrode 16 and the second branch SLb2. On the other hand, when resistance compensation is needed, only the first branch SLb1 needs to be cut off, and the resistance change caused by cutting off the first branch SLb1 can be compensated without operating the connection portion 17.

[0049] According to the present embodiment, the short circuit between the source signal line SL and the common electrode layer 23 can be suppressed, the liquid crystal display panel 100 and the liquid crystal display device can be made to work normally with a simple repair step, and the manufacturing cost can be suppressed. At the same time, according to the resistance compensation mechanism of the present embodiment, even if the first branch SLb1 is electrically separated from the second branch SLb2 and the main body Sla, the resistance change caused by the separation of the first branch SLb1 can be compensated, and each pixel can be made to work at a set power with a simple repair step, so that the liquid crystal display panel 100 and the liquid crystal display device can present the desired display quality.

[0050] [Second embodiment]

[0051] Below, refer to Figure 8The liquid crystal display panel 100 provided in the liquid crystal display device of the second embodiment of the present application is described. In this embodiment, based on the above-mentioned embodiment, the main body SLa of the source signal line SL in each pixel P further includes a main body, and a second branch portion connected between two adjacent main bodies, and the two ends of the second branch portion are respectively connected to the main body. The second branch portion includes a third branch SLc1 and a fourth branch SLc2. The third branch SLc1 and the fourth branch SLc2 extend parallel to each other along the column direction across the gate signal line GL, and the two ends of each branch SLc2 are connected to the main body of the main body Sla. The third branch SLc1 and the fourth branch SLc2 are arranged with the gate signal line GL separated by an insulating layer (which may be, for example, the first insulating layer 11). When one of the insulating layer sandwiched between the third branch SLc1 and the gate signal line GL and the insulating layer sandwiched between the fourth branch SLc2 and the gate signal line GL is defective, there is a risk of abnormal short circuit between the gate signal line GL and the source signal line SL. By disconnecting the third cut-off point C3 and the fourth cut-off point C4 on the third branch SLc1 or the fourth branch SLc2 where the short circuit abnormality occurs and retaining the other normal one, normal display can be ensured.

[0052] In addition, the resistance compensation mechanism of the above embodiment is also applicable to the second branch portion of this embodiment.

[0053] In addition, the spacer column PS of the present application is not limited to being arranged near the source signal line SL, but can also be arranged near the gate signal line GL. The same technical effect can be achieved by providing a branch portion on the gate signal line GL.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A liquid crystal display device, comprising a liquid crystal display panel, wherein the liquid crystal display device is characterized in that the liquid crystal display panel comprises: A first substrate comprises a plurality of data lines and a plurality of scan lines for dividing a plurality of pixels, wherein the data lines and the scan lines are orthogonal to each other, and in each of the pixels, a dummy electrode is disposed adjacent to the data line, and the dummy electrode is electrically isolated from the data line; a second substrate, which is opposite to the first substrate; A liquid crystal layer is sandwiched between the first substrate and the second substrate; as well as a plurality of spacers configured to maintain a unit gap of a plurality of the pixels, and aligning each of the spacers with the dummy electrodes in each of the pixels when the second substrate and the first substrate are attached to each other; The data line includes a plurality of main bodies and a plurality of first branches electrically connected to each other. The first branch is disposed adjacent to the dummy electrode, and two ends of the first branch are respectively connected to two adjacent main bodies.

2. The liquid crystal display device according to claim 1, wherein: The first branch portion includes a first branch and a second branch, the first branch and the first branch are separated by a gap and electrically connected to each other, and the second branch is farther away from the dummy electrode than the first branch. Two ends of the first branch and the second branch are respectively connected to two adjacent main trunks.

3. The liquid crystal display device according to claim 2, characterized in that: One end of each of the plurality of spacer columns is formed on the second substrate. The second substrate further includes a common electrode covering the plurality of spacers.

4. The liquid crystal display device according to claim 3, characterized in that: The first branch is provided with a first cut-off point and a second cut-off point, The spacer is offset to be aligned with the first branch, and the spacer is located between the first cut-off point and the second cut-off point. When the common electrode is connected to the first branch, the first cut-off point and the second cut-off point are cut off, so that the first branch is electrically separated from the data line.

5. The liquid crystal display device according to claim 2, characterized in that: The first substrate further includes a compensation electrode stacked on the second branch via an insulating layer, the compensation electrode being used to compensate for a resistance change caused by cutting off the first branch. By removing the insulating layer, the compensation electrode is electrically connected to the second branch.

6. The liquid crystal display device according to claim 2, characterized in that: The first substrate further comprises: a compensation electrode, which is disposed with the second branch separated by an insulating layer, and is used to compensate for a resistance change caused by cutting off the first branch; and a connecting portion, which is connected to the second branch via the first contact hole and to the compensation electrode via the second contact hole, thereby connecting the second branch to the compensation electrode, When no short circuit abnormality occurs, the connection portion is cut off to disconnect the second branch from the compensation electrode.

7. The liquid crystal display device according to claim 2, characterized in that: The width of the gap is greater than the minimum laser cutting size.

8. The liquid crystal display device according to claim 1, wherein: The width of the first branch portion is equal to the width of the main portion.

9. The liquid crystal display device according to claim 3, characterized in that: When the length of the main body is set to Y, the length of the first branch is set to Y1, the length of the second branch is set to Y2, the critical dimension of the spacer PS is set to β, and the total length of the data line in the unit pixel is set to L, the following relationship is satisfied: (β / (L-β))≤(Y1 / Y)≤1, and (β / (L-β))≤(Y2 / Y) ≤1。 10. The liquid crystal display device according to claim 1, characterized in that: The trunk of the data line includes a main body, and a second branch located in the middle of the main body and electrically connected to the main body, the second branch includes a third branch and a fourth branch, the third branch and the fourth branch are arranged across the scan line and are electrically isolated from the scan line.

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