Display panel and method of manufacturing the same

Abstract

The application discloses a display panel and a manufacturing method. The method comprises forming a plurality of test pads and a plurality of data signal lines and a plurality of touch signal lines on a first substrate. The plurality of test pads include a first group of test pads and a second group of test pads. The first group of test pads is electrically connected to the plurality of data signal lines, and the second group of test pads is electrically connected to the plurality of touch signal lines. Whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines is determined according to an electrical characteristic value between the first group of test pads and the second group of test pads. If yes, the position of the electrical abnormality is determined and repaired. If no, the first substrate and an opposite substrate are matched. Then, a first group of electrical signals and a second group of electrical signals are provided to the first group of test pads and the second group of test pads to determine whether the display panel displays normally. The application can determine the abnormality in time after the data signal lines and the touch signal lines are formed, avoid the defective products from flowing to subsequent processes, improve the product qualification rate, and reduce the production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display, in particular to a display panel and a manufacturing method thereof. BACKGROUND

[0002] With the development of technology, display panels with touch function are widely used in display devices such as mobile phones, wearable devices, tablet computers, etc. to enable the display devices to realize human-computer interaction function in a simple and convenient way. When manufacturing a display panel with touch function, the data lines and the touch signal lines (TP trace lines) are generally manufactured in the same layer. Short circuit may occur between adjacent data lines and touch signal lines due to small particles existing in the process. If this defect is not detected after the process of forming the data lines and the touch signal lines is completed, the defective display panel with the defect may be found only when the picture detection is performed after the display panel is manufactured, but at this time the defective display panel with the defect has completed all processes, thereby affecting the production yield. SUMMARY

[0003] The present application aims to provide a display panel and a manufacturing method thereof to solve the above problems.

[0004] To achieve the above-mentioned purpose, the present application provides a manufacturing method of a display panel, comprising:

[0005] Step A, providing a first substrate, forming a plurality of test pads and a plurality of signal lines extending along a first direction on the first substrate, the plurality of signal lines comprising a plurality of data signal lines and a plurality of touch signal lines, the plurality of test pads comprising a first group of test pads and a second group of test pads, wherein the first group of test pads is electrically connected to the plurality of data signal lines, and the second group of test pads is electrically connected to the plurality of touch signal lines;

[0006] Step B, determining whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to the electrical characteristic value between the first group of test pads and the second group of test pads; if yes, performing step C; if no, performing step D;

[0007] Step C, determining the position of the electrical abnormality and repairing it;

[0008] Step D, pairing the first substrate with a counter substrate; and

[0009] Step E, after pairing, providing a first group of electrical signals to the first group of test pads and a second group of electrical signals to the second group of test pads to determine whether the display panel displays normally.

[0010] As an optional technical solution, step C further comprises returning to step B after repairing the position of the electrical abnormality.

[0011] As an optional technical solution, in step B, the electrical characteristic value is a resistance value, and if it is confirmed that the resistance value between the first group of test pads and the second group of test pads is less than a preset range value, it is confirmed that a short circuit occurs between the plurality of data signal lines and the plurality of touch signal lines, and there is an electrical abnormality.

[0012] As an optional technical solution, the first group of test pads comprises a first test pad and a second test pad, the second group of test pads comprises a third test pad and a fourth test pad, the plurality of data signal lines comprises a first group of data signal lines and a second group of data signal lines, and the first group of data signal lines and the second group of data signal lines are arranged in a first staggered arrangement period; the plurality of touch signal lines comprises a first group of touch signal lines and a second group of touch signal lines, and the second group of touch signal lines and the second group of touch signal lines are arranged in a second staggered arrangement period; the first test pad is electrically connected to the first group of data signal lines, the second test pad is electrically connected to the second group of data signal lines, the third test pad is electrically connected to the first group of touch signal lines, and the fourth test pad is electrically connected to the second group of touch signal lines; step B comprises,

[0013] Step B1, confirming whether there is an electrical abnormality between the first group of data signal lines and the first group of touch signal lines according to the resistance value between the first test pad and the third test pad;

[0014] Step B2, confirming whether there is an electrical abnormality between the first group of data signal lines and the second group of touch signal lines according to the resistance value between the first test pad and the fourth test pad;

[0015] Step B3, confirming whether there is an electrical abnormality between the second group of data signal lines and the first group of touch signal lines according to the resistance value between the second test pad and the third test pad; and

[0016] Step B4, confirming whether there is an electrical abnormality between the second group of data signal lines and the second group of touch signal lines according to the resistance value between the second test pad and the fourth test pad.

[0017] As an optional technical solution, step A further comprises forming a pixel array on the first substrate, the pixel array comprising a first color pixel group, a second color pixel group and a third color pixel group, the first color pixel group comprising a plurality of first color pixel columns, the second color pixel group comprising a plurality of second color pixel columns, and the third color pixel group comprising a plurality of third color pixel columns; the plurality of first color pixel columns, the plurality of second color pixel columns and the plurality of third color pixel columns are arranged in a third staggered arrangement period, wherein the plurality of first color pixel columns correspond one-to-one to the first group of data signal lines, the plurality of second color pixel columns correspond one-to-one to the second group of data signal lines.

[0018] As an optional technical solution, in step A, the plurality of data signal lines and the plurality of touch signal lines are arranged in the same layer.

[0019] As an optional technical solution, in step E, the second group of electrical signals comprises different first voltage signals and second voltage signals, so that the display panel displays a first test picture.

[0020] As an optional technical solution, step A further comprises forming a switching circuit on the first substrate, the first group of test pads being electrically connected to the plurality of data signal lines through the switching circuit, and the second group of test pads being electrically connected to the plurality of touch signal lines through the switching circuit.

[0021] As an optional technical solution, in step C, the AOI is used to confirm the electrical abnormal position.

[0022] In addition, the present application also provides a display panel, which comprises a first substrate and an opposite substrate. The opposite substrate is paired with the first substrate. The first substrate is provided with a plurality of test pads and a plurality of signal lines extending in a first direction, the plurality of signal lines comprising a plurality of data signal lines and a plurality of touch signal lines, and the plurality of test pads comprising a first group of test pads and a second group of test pads, wherein the first group of test pads is electrically connected to the plurality of data signal lines, and the second group of test pads is electrically connected to the plurality of touch signal lines. Before the first substrate and the opposite substrate are paired, the first group of test pads and the second group of test pads are used to confirm whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to the electrical characteristic values between them; after the first substrate and the opposite substrate are paired, the first group of test pads and the second group of test pads are used to receive electrical signals and transmit to the plurality of data signal lines and the plurality of touch signal lines to confirm whether the display panel displays normally.

[0023] The display panel and the manufacturing method thereof, after forming the plurality of data signal lines and the plurality of touch signal lines on the substrate, the electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines is confirmed by the electrical characteristic value between the plurality of test pads connected thereto, if the electrical abnormality is found, the abnormality can be confirmed and repaired in time, then the subsequent substrate pairing process is carried out, and after the substrate pairing, the electrical signal is provided to the plurality of test pads to confirm whether the display panel after pairing can normally display. In this way, the abnormality can be confirmed in time after the formation of the data signal line and the touch signal line, avoiding the flow of defective products to the subsequent process, improving the product qualification rate and reducing the production cost.

[0024] The present application is described in detail below in conjunction with the accompanying drawings and specific embodiments, but is not limited thereto. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The flow chart of the manufacturing method of the display panel of the present application is shown in the figure.

[0026] Figure 2 The schematic diagram of the display panel of the present application is shown in the figure.

[0027] Figure 3 The schematic diagram of the first substrate in the display panel of the present application is shown in the figure.

[0028] Figure 4 The partial enlarged schematic diagram of the first substrate in the display panel of the present application is shown in the figure. DETAILED DESCRIPTION

[0029] In order to further understand the purpose, structure, characteristics and functions of the present application, the embodiments are described in detail as follows.

[0030] Please refer to Figures 1 to 4 , Figure 1 The flow chart of the manufacturing method of the display panel of the present application is shown in the figure, Figure 2 The schematic diagram of the display panel of the present application is shown in the figure, Figure 3 The schematic diagram of the first substrate in the display panel of the present application is shown in the figure, Figure 4 The partial enlarged schematic diagram of the first substrate in the display panel of the present application is shown in the figure. The manufacturing method of the display panel of the present application comprises:

[0031] Step A (S110), providing a first substrate 100. A plurality of signal lines 110 and a plurality of test pads 120 are formed on the first substrate 100. The plurality of signal lines include a plurality of data signal lines and a plurality of touch signal lines. The plurality of test pads 120 include a first group of test pads 130 and a second group of test pads 140. The first group of test pads 130 are electrically connected to the plurality of data signal lines. The second group of test pads 140 are electrically connected to the plurality of touch signal lines. In the embodiment, the first substrate 100 has a display area AA and a non-display area surrounding the display area AA. The plurality of signal lines 110 can be disposed in the display area AA. The plurality of test pads 120 can be disposed in the non-display area.

[0032] Step B (S120), determining whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to the electrical characteristic values between the first group of test pads 130 and the second group of test pads 140. If yes, performing step C. If no, performing step D.

[0033] Step C (S130), determining the location of the electrical abnormality and repairing the electrical abnormality.

[0034] Step D (S140), assembling the first substrate 100 with a counter substrate 200 (see Figure 2 ) to form a display panel 1000; and

[0035] Step E (S150), after the assembling, providing a first group of electrical signals to the first group of test pads 130 and a second group of electrical signals to the second group of test pads 140 to determine whether the display panel 1000 displays normally.

[0036] In combination Figures 2 to 4As shown, the display panel 1000 of the present application comprises a first substrate 100 and a counter substrate 200, and the first substrate 100 and the counter substrate 200 are paired. A plurality of signal lines 110 and a plurality of test pads 120 are formed on the first substrate 100. The plurality of signal lines 110 comprises a plurality of data signal lines and a plurality of touch signal lines. The plurality of test pads 120 comprises a first group of test pads 130 and a second group of test pads 140, wherein the first group of test pads 130 is electrically connected to the plurality of data signal lines, and the second group of test pads 140 is electrically connected to the plurality of touch signal lines. Before the first substrate 100 and the counter substrate 200 are paired, the first group of test pads 130 and the second group of test pads 140 are used to determine whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to an electrical characteristic value between the two. After the first substrate 100 and the counter substrate 200 are paired, the first group of test pads 130 and the second group of test pads 140 are used to receive an electrical signal and transmit it to the plurality of data signal lines and the plurality of touch signal lines to determine whether the display panel 1000 can display normally.

[0037] The display panel and the manufacturing method thereof of the present application can determine whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to an electrical characteristic value between the plurality of test pads 120 connected thereto after the plurality of data signal lines and the plurality of touch signal lines are formed on the first substrate 100. If an electrical abnormality is found, the specific position can be determined and repaired in time, and then the pairing process of the first substrate 100 and the counter substrate 200 is performed, and after the first substrate 100 and the counter substrate 200 are paired, an electrical signal is provided to the plurality of test pads 120 to determine whether the display panel 1000 after pairing can display normally. In this way, the quality can be determined in time after the data signal lines and the touch signal lines are formed, and the defective products can be prevented from flowing to the subsequent processes, thereby improving the product yield and reducing the production cost.

[0038] In an embodiment, in the step B, the electrical characteristic value is a resistance value. If it is determined that the resistance value between the first group of test pads 130 and the second group of test pads 140 is less than a preset range value, it is determined that a short circuit occurs between the plurality of data signal lines and the plurality of touch signal lines, and there is an electrical abnormality.

[0039] In actual operation, in step C, the specific position of the electrical abnormality can be confirmed by AOI (Automated Optical Inspection). After confirming the specific position of the electrical abnormality, the position of the electrical abnormality is repaired, for example, by a laser repair method. Then, step B is returned to, and whether the electrical abnormality still exists between the plurality of data signal lines and the plurality of touch signal lines after confirming the repaired position of the electrical abnormality by the electrical characteristic value between the first group of test pads 130 and the second group of test pads 140 is reconfirmed. If yes, it means that the repair is not successful or there still exists a position of the electrical abnormality that has not been repaired, and step C is performed to continue confirming the position of the electrical abnormality and repairing; if no, it means that the repair is successful, and step D is performed.

[0040] As shown in Figure 3 and Figure 4 The first group of test pads 130 includes a first test pad 131 and a second test pad 132, the second group of test pads 140 includes a third test pad 141 and a fourth test pad 142, the plurality of data signal lines includes a first group of data signal lines D1 and a second group of data signal lines D1, the first group of data signal lines D1 and the second group of data signal lines D2 each include a plurality of data signal lines, each data signal line in the first group of data signal lines D1 and each data signal line in the second group of data signal lines D2 are arranged in a first staggered arrangement period, in the embodiment, the first staggered arrangement period is ABABABAB……; the plurality of touch signal lines includes a first group of touch signal lines T1 and a second group of touch signal lines T2, the first group of touch signal lines T1 and the second group of touch signal lines T2 each include a plurality of touch signal lines, each touch signal line in the first group of touch signal lines T1 and each touch signal line in the second group of touch signal lines T2 are arranged in a second staggered arrangement period, the second staggered arrangement period is different from the first staggered arrangement period. In the embodiment, the second staggered arrangement period is AABBAABB……. Wherein the first test pad 131 is electrically connected to the first group of data signal lines D1, the second test pad 132 is electrically connected to the second group of data signal lines D2, the third test pad 133 is electrically connected to the first group of touch signal lines T1, and the fourth test pad 134 is electrically connected to the second group of touch signal lines T2. In an embodiment, step B includes,

[0041] Step B1, according to the resistance value between the first test pad 131 and the third test pad 133, whether an electrical abnormality exists between each data signal line in the first group of data signal lines D1 and each touch signal line in the first group of touch signal lines T1 is confirmed;

[0042] Step B2, whether there is an electrical abnormality between each data signal line in the first group of data signal lines D1 and each touch signal line in the second group of touch signal lines T2 is determined according to the resistance value between the first test pad 131 and the fourth test pad 134;

[0043] Step B3, whether there is an electrical abnormality between each data signal line in the second group of data signal lines D2 and each touch signal line in the first group of touch signal lines T1 is determined according to the resistance value between the second test pad 132 and the third test pad 133; and

[0044] Step B4, whether there is an electrical abnormality between each data signal line in the second group of data signal lines D2 and each touch signal line in the second group of touch signal lines T2 is determined according to the resistance value between the second test pad 132 and the fourth test pad 134.

[0045] In the embodiment, each data signal line in the first group of data signal lines D1 and each data signal line in the second group of data signal lines D2 are arranged according to a first staggered arrangement period, and each touch signal line in the first group of touch signal lines T1 and each touch signal line in the second group of touch signal lines T2 are arranged according to a second staggered arrangement period, the first staggered arrangement period is different from the second staggered arrangement period, so that each signal line in the first group of data signal lines D1 is adjacent to part of the touch signal lines in the first group of touch signal lines T1 and part of the touch signal lines in the second group of touch signal lines T2, and the second group of data signal lines D2 is similar, so that the one-by-one investigation can be performed in step B.

[0046] As shown in Figure 4 , in actual operation, step A further includes forming a pixel array on the first substrate 100, the pixel array PX includes a first color pixel group, a second color pixel group and a third color pixel group, the first color pixel group includes a plurality of first color pixel columns P1, the second color pixel group includes a plurality of second color pixel columns P2, and the third color pixel group includes a plurality of third color pixel columns P3; the plurality of first color pixel columns P1, the plurality of second color pixel columns P2 and the plurality of third color pixel columns P3 are arranged according to a third staggered arrangement period. In the embodiment, the third staggered arrangement period is ABCABCABC… Further, as shown in Figure 4 , the plurality of first color pixel columns P1 correspond to each data signal line in the first group of data signal lines D1 one by one, and the plurality of second color pixel columns P2 correspond to each data signal line in the second group of data signal lines D2 one by one.

[0047] In actual operation, as shown in Figure 3 and Figure 4As shown, the first group of test pads 130 further includes a fifth test pad 133, the plurality of data signal lines further includes a third group of data signal lines D3, the plurality of third color pixel columns P3 correspond to the data signal lines in the third group of data signal lines D3 one by one, and the fifth test pad 133 is electrically connected to each data signal line in the third group of data signal lines D3. In step E, a first group of electrical signals is respectively provided to the first test pad 131, the second test pad 132, and the fifth test pad 133 in the first group of test pads 130, so as to be respectively transmitted to the first group of data signal lines D1, the second group of data signal lines D2, and the third group of data signal lines D3, thereby driving each color pixel column.

[0048] In actual operation, in step E, the second group of electrical signals S1 includes different first voltage signals and second voltage signals, so that the display panel displays a first test picture. In this embodiment, the first voltage signal is provided to the third test pad 141 in the second group of test pads 140 and is transmitted to the first touch signal line T1, and the second voltage signal different from the first voltage signal is provided to the fourth test pad 142 in the second group of test pads 140 and is transmitted to the second touch signal line T2 for detection.

[0049] In an embodiment, the first color pixel column P1 is a blue color pixel column, the second color pixel column P2 is a green color pixel column, and the third color pixel column P3 is a red color pixel column, wherein the data signal lines corresponding to each first color pixel column P1 and each second color pixel column P2 are provided with a touch signal line on the side thereof, and the data signal lines corresponding to each second color pixel column P2 are not provided with a touch signal line on the side thereof.

[0050] In an embodiment, in step A, the plurality of data signal lines and the plurality of touch signal lines are provided in the same layer. In actual operation, since they are provided in the same layer, and as the resolution of the display panel becomes higher and higher, the spacing between adjacent signal lines becomes smaller and smaller, and the problem of short circuit between signal lines in the same layer and electrical abnormality is prone to occur.

[0051] In an embodiment, step A further includes forming a switching circuit 150 (such as a shift register) on the first substrate 100. Figure 4 As shown, the switching circuit 150 can be provided between the pixel array and the plurality of test pads 120. The first group of test pads 130 is electrically connected to the plurality of data signal lines through the switching circuit 150, and the second group of test pads 140 is electrically connected to the plurality of touch signal lines through the switching circuit 150. In actual operation, the switching circuit 150 can include a plurality of switching elements, each test pad is connected to a corresponding switching element; in the test stage, different switching elements are turned on, so as to facilitate detection of the electrical characteristic values between different test pads, or transmission of the electrical signals received by each test pad to the corresponding signal line.

[0052] The display panel and the manufacturing method thereof can confirm whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines through the electrical characteristic values between the plurality of test pads connected thereto after forming the plurality of data signal lines and the plurality of touch signal lines on the substrate. If the electrical abnormality is found, it can be confirmed and repaired in time. After confirming that the electrical characteristic is normal, subsequent substrate pairing and other processes are performed. After the substrate pairing, electrical signals are provided to the plurality of test pads to confirm whether the display panel after pairing can display normally. In this way, the abnormality can be confirmed in time after forming the data signal lines and the touch signal lines, avoiding the flow of defective products to subsequent processes, improving the product pass rate, and reducing production costs. At the same time, different tests are performed using the test pads at different stages, enhancing the test function.

[0053] Of course, the present application can have other various embodiments. Those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application. However, these corresponding changes and modifications should belong to the protection scope of the claims attached to the present application.

Claims

1. A manufacturing method of a display panel, characterized by Comprising: Step A, providing a first substrate, forming a plurality of test pads and a plurality of signal lines extending along a first direction on the first substrate, the plurality of signal lines including a plurality of data signal lines and a plurality of touch signal lines, the plurality of data signal lines and the plurality of touch signal lines being disposed in the same layer; The plurality of test pads includes a first group of test pads and a second group of test pads, wherein the first group of test pads is electrically connected to the plurality of data signal lines, and the second group of test pads is electrically connected to the plurality of touch signal lines; Step B, determining whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to an electrical characteristic value between the first group of test pads and the second group of test pads; if yes, performing step C; if no, performing step D; Step C, determining the location of the electrical abnormality and repairing it; Step D, assembling the first substrate with a counter substrate; and Step E, after assembling, providing a first group of electrical signals to the first group of test pads and a second group of electrical signals to the second group of test pads to determine whether the display panel displays normally; In step B, the electrical characteristic value is a resistance value, and if it is determined that the resistance value between the first group of test pads and the second group of test pads is less than a preset range value, it is determined that a short circuit occurs between the plurality of data signal lines and the plurality of touch signal lines, and there is an electrical abnormality.

2. The manufacturing method according to claim 1, characterized by, Step C further includes returning to step B after repairing the location of the electrical abnormality.

3. The production method according to claim 1, characterized by The first group of test pads includes a first test pad and a second test pad, the second group of test pads includes a third test pad and a fourth test pad, the plurality of data signal lines includes a first group of data signal lines and a second group of data signal lines, the first group of data signal lines and the second group of data signal lines are arranged according to a first staggered arrangement period, the plurality of touch signal lines includes a first group of touch signal lines and a second group of touch signal lines, the second group of touch signal lines and the second group of touch signal lines are arranged according to a second staggered arrangement period, the first test pad is electrically connected to the first group of data signal lines, the second test pad is electrically connected to the second group of data signal lines, the third test pad is electrically connected to the first group of touch signal lines, and the fourth test pad is electrically connected to the second group of touch signal lines; step B includes, Step B1, determining whether there is an electrical abnormality between the first group of data signal lines and the first group of touch signal lines according to the resistance value between the first test pad and the third test pad; Step B2, determining whether there is an electrical abnormality between the first group of data signal lines and the second group of touch signal lines according to the resistance value between the first test pad and the fourth test pad; Step B3, determining whether there is an electrical abnormality between the second group of data signal lines and the first group of touch signal lines according to the resistance value between the second test pad and the third test pad; And Step B4, determining whether there is an electrical abnormality between the second group of data signal lines and the second group of touch signal lines according to the resistance value between the second test pad and the fourth test pad.

4. The production method according to claim 3, characterized by The step A further comprises forming a pixel array on the first substrate, the pixel array comprising a first color pixel group, a second color pixel group and a third color pixel group, the first color pixel group comprising a plurality of first color pixel columns, the second color pixel group comprising a plurality of second color pixel columns, and the third color pixel group comprising a plurality of third color pixel columns, the plurality of first color pixel columns, the plurality of second color pixel columns and the plurality of third color pixel columns being arranged in a third interlaced arrangement period, wherein the plurality of first color pixel columns correspond to the first group of data signal lines one by one, the plurality of second color pixel columns correspond to the second group of data signal lines one by one.

5. The production method according to claim 1, characterized by In the step E, the second group of electrical signals comprises different first voltage signals and second voltage signals, so that the display panel displays a first test picture.

6. The production method according to claim 1, characterized by The step A further comprises forming a switching circuit on the first substrate, the first group of test pads being electrically connected to the plurality of data signal lines through the switching circuit, and the second group of test pads being electrically connected to the plurality of touch signal lines through the switching circuit.

7. The production method according to claim 1, wherein In the step C, the AOI is used to confirm the electrical abnormal position.

8. A display panel, characterized by Comprise, A first substrate having a plurality of test pads and a plurality of signal lines extending in a first direction formed thereon, the plurality of signal lines comprising a plurality of data signal lines and a plurality of touch signal lines, the plurality of data signal lines and the plurality of touch signal lines being disposed in the same layer; the plurality of test pads comprising a first group of test pads and a second group of test pads, wherein the first group of test pads is electrically connected to the plurality of data signal lines, and the second group of test pads is electrically connected to the plurality of touch signal lines; and A counter substrate paired with the first substrate; Before the first substrate and the counter substrate are paired, the first group of test pads and the second group of test pads are used to confirm whether there is an electrical abnormality between the plurality of data signal lines and the plurality of touch signal lines according to an electrical characteristic value therebetween; after the first substrate and the counter substrate are paired, the first group of test pads and the second group of test pads are used to receive electrical signals and transmit to the plurality of data signal lines and the plurality of touch signal lines to confirm whether the display panel displays normally; The electrical characteristic value is a resistance value, and if it is confirmed that the resistance value between the first group of test pads and the second group of test pads is less than a preset range value, it is confirmed that a short circuit occurs between the plurality of data signal lines and the plurality of touch signal lines, and there is an electrical abnormality.

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