Testing equipment for display screens and display screens

Abstract

The application relates to the technical field of display, and particularly discloses a display screen testing device and a display screen, the display screen comprises a screen body, the screen body comprises a display area and a bonding area, the display area comprises a plurality of pixel areas, and the bonding area comprises an input terminal bonding area and an output terminal bonding area; the display screen testing device comprises a wire arranged between the input terminal bonding area and the output terminal bonding area, the wire comprises a first end and a second end, the first end is used for connecting a test signal, and the second end is connected with the pixel area. That is, after the test signal is input into the wire, whether a crack exists between the input terminal bonding area and the output terminal bonding area can be determined by observing the display state of the pixel area, so that the crack in the bonding area can be detected.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a testing device for a display screen and a display screen. Background Technology

[0002] Flexible display panels have advantages such as small size, portability, and bendability, and have become the mainstream development trend in display panels. However, in the manufacturing process of flexible display panels, there are often process difficulties, such as cracks caused by bonding, which are difficult to detect in actual operation. Summary of the Invention

[0003] Therefore, it is necessary to provide a testing device for a display screen and a display screen to address the above problems.

[0004] According to a first aspect of this application, a testing apparatus for a display screen is provided, the display screen including a screen body, the screen body including a display area and a bonding area, the display area including a plurality of pixel areas, and the bonding area including an input terminal bonding area and an output terminal bonding area;

[0005] The test device for the display screen includes a trace disposed between the input terminal bonding area and the output terminal bonding area. The trace includes a first end and a second end, the first end being used to receive a test signal, and the second end being connected to the pixel area.

[0006] In one embodiment, the direction from the input terminal bonding area to the output terminal bonding area is a first direction, the trace passes through the area between the input terminal bonding area and the output terminal bonding area along the first direction, and the total length of the trace traversed in the area between the input terminal bonding area and the output terminal bonding area is greater than the size of the area between the input terminal bonding area and the output terminal bonding area in the first direction.

[0007] In one embodiment, the trace repeatedly bends in the area between the input terminal bonding area and the output terminal bonding area.

[0008] In one embodiment, the input terminal bonding area includes a plurality of input terminals arranged along a second direction, and the output terminal bonding area includes a plurality of output terminals arranged along the second direction. The plurality of input terminals and the plurality of output terminals are aligned one-to-one along a first direction. An output terminal and an input terminal aligned in the first direction constitute a set of terminals. The second direction intersects the first direction.

[0009] In one embodiment, the second direction is perpendicular to the first direction.

[0010] In one embodiment, the wiring includes a plurality of repeated bending units, each repeated bending unit including a first extension segment, a first U-shaped bending segment and a second U-shaped bending segment with opening directions facing each other, and a second extension segment, wherein the first extension segment and the second extension segment extend along the second direction; wherein, the first end of the first extension segment is connected to the first end of the first U-shaped bending segment, the second end of the first U-shaped bending segment is connected to the first end of the second U-shaped bending segment, and the second end of the second U-shaped bending segment is connected to the second end of the first extension segment in an adjacent repeated bending unit;

[0011] The orthographic projection of each group of terminals along the first direction falls within the orthographic projection of the first extension segment along the first direction in the corresponding repeated bending unit. The orthographic projections of the first U-shaped bending segment, the second U-shaped bending segment, and the second extension segment along the first direction fall within the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals in the first direction.

[0012] In one embodiment, each of the first extension segments in different repeating bending units is distributed at different positions in a first direction.

[0013] In one embodiment, the bottom of the first U-shaped bend extends into the space between two adjacent output terminals, and the bottom of the second U-shaped bend extends into the space between two adjacent input terminals.

[0014] In one embodiment, a switching device is provided between the second end of the trace and the pixel area.

[0015] In one embodiment, when the test signal transmitted to the pixel area is a first level signal, the pixel area is lit; when the test signal transmitted to the pixel area is a second level signal, the pixel area is turned off.

[0016] In one embodiment, each pixel region includes a plurality of pixel units of different colors, and the second end of the trace is connected to one of the pixel units of one color.

[0017] In one embodiment, the pixel units are arranged in an array, and the second end of the trace is simultaneously connected to several pixel units of the same color in the same row or column.

[0018] According to a second aspect of this application, a display screen is provided, including a screen body, the screen body including a display area and a bonding area, the display area including a plurality of pixel areas, the bonding area including an input terminal bonding area and an output terminal bonding area; a trace is provided between the input terminal bonding area and the output terminal bonding area, the trace including a first end and a second end, the first end being used to receive a test signal, and the second end being connected to the pixel areas.

[0019] In one embodiment, the direction from the input terminal bonding area to the output terminal bonding area is a first direction, the trace passes through the area between the input terminal bonding area and the output terminal bonding area along the first direction, and the total length of the trace traversed in the area between the input terminal bonding area and the output terminal bonding area is greater than the dimensions of the input terminal bonding area and the output terminal bonding area in the first direction.

[0020] In one embodiment, the trace repeatedly bends in the area between the input terminal bonding area and the output terminal bonding area.

[0021] In one embodiment, the wiring includes a plurality of repeated bending units, each repeated bending unit including a first extension segment, a first U-shaped bending segment and a second U-shaped bending segment with opening directions facing each other, and a second extension segment, wherein the first extension segment and the second extension segment extend along the second direction; wherein, the first end of the first extension segment is connected to the first end of the first U-shaped bending segment, the second end of the first U-shaped bending segment is connected to the first end of the second U-shaped bending segment, and the second end of the second U-shaped bending segment is connected to the second end of the first extension segment in an adjacent repeated bending unit;

[0022] The orthographic projection of each group of terminals along the first direction falls within the orthographic projection of the first extension segment along the first direction in the corresponding repeated bending unit. The orthographic projections of the first U-shaped bending segment, the second U-shaped bending segment, and the second extension segment along the first direction fall within the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals in the first direction.

[0023] In one embodiment, each of the first extension segments in different repeating bending units is distributed at different positions in a first direction.

[0024] The display screen testing device and display screen provided in this application embodiment have a trace between the input terminal bonding area and the output terminal bonding area. A test signal is connected to the first end of the trace, and the second end of the trace is connected to the pixel area. During actual testing, when a test signal is applied to the trace, if there is a crack in the area between the input terminal bonding area and the output terminal bonding area (i.e., the trace is actually open), the test signal will change. For example, if the initial input test signal is high, it becomes low due to the broken trace. The test signal transmitted to the pixel area changes, for example, becomes low, and the pixel area displays one display state. If there is no crack in the area between the input terminal bonding area and the output terminal bonding area, the trace is continuous, meaning the test signal does not change. The test signal transmitted to the pixel area is the same as the initial test signal applied to the trace, and the pixel area displays another display state. That is, the presence of a crack between the input terminal bonding area and the output terminal bonding area can be determined by observing the display state of the pixel area, thus achieving crack detection in the bonding area. Attached Figure Description

[0025] Figure 1 A schematic diagram showing the location of the crack in the bonding zone;

[0026] Figure 2 This is a schematic diagram of the structure of a testing device for a display screen provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of a testing device for a display screen provided in another embodiment of this application;

[0028] Figure 4 for Figure 3 Enlarged view of the repeated bending unit 410;

[0029] Figure 5 This is a schematic diagram of the structure of a test device for a display screen provided in another embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 200, Display area; 210, Pixel area; 211, Pixel unit;

[0032] 300, Bonding area; 310, Input terminal bonding area; 311, Input terminal; 320, Output terminal bonding area; 321, Output terminal;

[0033] 400. Tracing; 410. Repeated bending unit; 411. First extension segment; 412. First U-shaped bend segment; 413. Second U-shaped bend segment; 414. Second extension segment;

[0034] 500. Switching devices;

[0035] X represents the horizontal direction; Y represents the vertical direction. Detailed Implementation

[0036] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] Flexible display panels have advantages such as small size, portability, and bendability, and have become the mainstream development trend in display panels. However, in the manufacturing process of flexible display panels, there are often technical difficulties, such as cracks caused by bonding.

[0041] Specifically, during the bonding of the driver chip to the flexible display panel, the bonding pressure may cause problems such as deformation and stress concentration in the display panel, which in turn may lead to cracks between the input bump (input terminal bonding area) and the output bump (output terminal bonding area) of the display panel.

[0042] However, in actual operation, microcracks that appear after bonding cannot be detected, which will affect the product yield.

[0043] To address the aforementioned issues, this application provides a testing device for displays, which enables the detection of microcracks in the bonding area of ​​the display screen, thereby improving product yield.

[0044] The display screen includes a screen body, which includes a display area 200 and a bonding area 300. The display area 200 includes a plurality of pixel areas 210. (See reference...) Figure 1 The bonding area 300 includes an input terminal bonding area 310 and an output terminal bonding area 320. The input terminal bonding area 310 includes a plurality of input terminals 311 spaced apart along a second direction (as shown by the X direction in the figure), and the output terminal bonding area 320 includes a plurality of output terminals 321 spaced apart along the second direction. The number of input terminals 311 and output terminals 321 are the same, and they correspond one-to-one. The direction from the input terminal bonding area 310 to the output terminal bonding area 320 is a first direction (as shown by the Y direction in the figure). Specifically, the plurality of input terminals 311 and the plurality of output terminals 321 can be aligned one-to-one along the first direction. An output terminal 321 aligned in the first direction and an input terminal 311 together form a terminal group. The input terminal bonding area 310 and the output terminal bonding area 320 are arranged along the first direction, and there is a gap between them. During the bonding process, microcracks often appear in this gap area.

[0045] The second direction intersects the first direction. Preferably, the second direction is perpendicular to the first direction, such as... Figure 1 As shown, the second direction can be horizontal (X) and the first direction can be vertical (Y). In the following explanation, we will use horizontal (X) as the second direction and vertical (Y) as the first direction as the first example.

[0046] Reference Figures 2-5 The display screen testing device provided in this embodiment includes a trace 400 disposed between the input terminal bonding area 310 and the output terminal bonding area 320. The trace 400 includes a first end and a second end. The first end is used to receive a test signal, and the second end is connected to the pixel area 210. The trace 400 may include metal traces, etc.

[0047] Preferably, the display state of the pixel area 210 is different when the test signals transmitted to the pixel area 210 are different.

[0048] That is, a trace 400 is provided in the interval area between the input terminal bonding area 310 and the output terminal bonding area 320, and the trace 400 can run through the entire interval area at least in the horizontal direction X. After the trace 400 is connected to the test signal, the presence of cracks in the interval area can be determined by the display status of the pixel area 210.

[0049] During actual testing, when a test signal is applied to trace 400, if a crack exists in the area between the input terminal bonding area 310 and the output terminal bonding area 320 (i.e., trace 400 is actually disconnected), the test signal will change. For example, if the initial input test signal is high, it will become low due to the disconnection of trace 400, and the test signal transmitted to pixel area 210 will also be low, resulting in one display state for pixel area 210. If there is no crack in the area between the input terminal bonding area 310 and the output terminal bonding area 320, trace 400 will be continuous, meaning the test signal will not change. The test signal transmitted to pixel area 210 will be the same as the initial test signal applied to trace 400, resulting in another display state for pixel area 210. In other words, the presence of a crack between the input terminal bonding area 310 and the output terminal bonding area 320 can be determined by observing the display state of pixel area 210, thus enabling the detection of cracks in bonding area 300.

[0050] In one embodiment, when the test signal transmitted to pixel area 210 is a first level signal, pixel area 210 is lit; when the test signal transmitted to pixel area 210 is a second level signal, pixel area 210 is turned off.

[0051] It should be noted that the test signal transmitted to pixel area 210 may be different from the initial test signal transmitted through trace 400. For example, if the initial test signal transmitted through trace 400 is a high-level signal, and there is a crack at the location through which trace 400 passes, it is equivalent to trace 400 being broken by the crack. In this case, the first end of trace 400 actually becomes a low-level signal, and the test signal transmitted to pixel area 210 is also a low-level signal. If there is no crack at the location through which trace 400 passes, it is equivalent to trace 400 being continuous, and the high-level signal will be transmitted to pixel area 210 through trace 400, that is, the test signal transmitted to pixel area 210 is a high-level signal.

[0052] Assuming the first level signal is low and the second level signal is high, pixel area 210 is lit when it receives a low-level signal and turned off when it receives a high-level signal. Returning to the example above, if the initial test signal supplied to trace 400 is high, and pixel area 210 is lit, it can be inferred that pixel area 210 received a low-level signal. Further, it can be inferred that a crack exists in the area traversed by trace 400, causing trace 400 to break, thus preventing the high-level signal from being transmitted to pixel area 210. If pixel area 210 is not lit, it can be inferred that pixel area 210 received a high-level signal. Further, it can be inferred that trace 400 is continuous, and there are no cracks in the area traversed by trace 400, thus allowing the high-level signal to be transmitted to pixel area 210.

[0053] In one embodiment, reference Figure 2 and Figure 3 The trace 400 passes through the area between the input terminal bonding area 310 and the output terminal bonding area 320 in the first direction, and the total length of the trace 400 in the area between the input terminal bonding area 310 and the output terminal bonding area 320 is greater than the size of the area between the input terminal bonding area 310 and the output terminal bonding area 320 in the first direction.

[0054] Preferably, the trace 400 is repeatedly bent in the area between the input terminal bonding area 310 and the output terminal bonding area 320.

[0055] Since cracks can exist anywhere between the input terminal bonding area 310 and the output terminal bonding area 320, to improve the accuracy of the test results, it is necessary to ensure that the trace 400 passes through the location of the crack. Therefore, in this embodiment, the trace 400 is configured with a repeatedly bent shape to increase the area traversed by the trace 400, thereby increasing the likelihood that the trace 400 will pass through the location of the crack when it is present.

[0056] In one embodiment, reference Figure 3 and Figure 4 The wiring 400 includes a plurality of repeated bending units 410. Each repeated bending unit 410 includes a first extension segment 411, a first U-shaped bending segment 412 and a second U-shaped bending segment 413 with their opening directions facing each other, and a second extension segment 414. The first extension segment 411 and the second extension segment 414 extend in the transverse direction X. The first end of the first extension segment 411 is connected to the first end of the first U-shaped bending segment 412, the second end of the first U-shaped bending segment 412 is connected to the first end of the second U-shaped bending segment 413, and the second end of the second U-shaped bending segment 413 is connected to the second end of the first extension segment 411 in the adjacent repeated bending unit 410.

[0057] The orthographic projection of each group of terminals along the longitudinal direction Y falls within the orthographic projection of the first extension segment 411 along the longitudinal direction Y in the corresponding repeated bending unit 410. The orthographic projections of the first U-shaped bending segment 412, the second U-shaped bending segment 413, and the second extension segment 414 along the longitudinal direction Y fall within the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals along the longitudinal direction Y.

[0058] By setting up the aforementioned repeated bending unit 410, it can be further ensured that the trace 400 can flow through as many positions as possible in both the horizontal X and vertical Y directions, preventing the trace 400 from passing through cracks when they exist.

[0059] Furthermore, the first extension segments 411 in different repeating bending units 410 can be distributed at different longitudinal Y positions. For example, if the first extension segment 411 in the first repeating bending unit 410 is located in the longitudinal Y direction closer to the output terminal bonding area 320, then the first extension segments 411 in other repeating bending units 410 distributed in the transverse X direction are set in the longitudinal Y position gradually away from the output terminal bonding area 320. This arrangement can further increase the flow range of the trace 400 and improve the accuracy of the test.

[0060] In one embodiment, the bottom of the first U-shaped bend 412 extends into the space between two adjacent output terminals 321, and the bottom of the second U-shaped bend 413 extends into the space between two adjacent input terminals 311. This maximizes the coverage of the trace 400 in the longitudinal Y direction, further improving test accuracy.

[0061] Reference Figure 3 In one embodiment, a switching device 500 is provided between the second end of the trace 400 and the pixel area 210. The switching device 500 can connect or disconnect the second end of the trace 400 and the pixel area 210.

[0062] The switching device 500 can be a switching transistor. For example, a PMOS switching transistor can be used as the switching device 500. When the input low level is brought to the gate, the PMOS switching transistor closes, connecting the second end of the trace 400 with the pixel area 210, at which point testing can be performed. When the input high level is brought to the gate, the PMOS switching transistor opens, disconnecting the second end of the trace 400 from the pixel area 210, at which point testing stops.

[0063] Reference Figure 5In one embodiment, each pixel region 210 includes a plurality of pixel units 211 of different colors, and the second end of the trace 400 is connected to one of the pixel units 211 of different colors.

[0064] The pixel area 210 may include red pixel units, green pixel units, blue pixel units, etc., and the second end of the trace 400 may be connected to a pixel unit 211 of one of the colors. For example, the second end of the trace 400 may be connected to a green pixel unit, that is, during the test, the presence of cracks in the bonding area 300 is determined by the on / off status of the green pixel unit.

[0065] In this embodiment, the second end of the trace 400 can be connected to the source signal line in the pixel driving circuit corresponding to the pixel unit 211. That is, when the source signal line receives different level signals, the pixel unit 211 can present different display states.

[0066] In one embodiment, the pixel units are arranged in an array, and the second end of the trace 400 simultaneously connects to several pixel units 211 of the same color in the same row or column. For example, refer to... Figure 5 If the green pixel units in the same column are located in the same column, the second end of the trace 400 can be connected to multiple green pixel units 211 located in the same column at the same time. When the transmitted test signal can light up the green pixel unit 211, multiple green pixel units 211 will be lit up, and the display area 200 will display a green line. This makes it easier for testers to observe and determine the display status of the pixel area 210, thereby improving test accuracy and efficiency.

[0067] In one embodiment, a display screen is also provided, including a screen body, the screen body including a display area 200 and a bonding area 300, the display area 200 including a plurality of pixel areas 210, and the bonding area 300 including an input terminal bonding area 310 and an output terminal bonding area 320; a trace is provided between the input terminal bonding area 310 and the output terminal bonding area 320, the trace including a first end and a second end, the first end being used to connect a test signal, and the second end being connected to the pixel area 210.

[0068] In one embodiment, the trace extends along a first direction through the region between the input terminal bonding area 310 and the output terminal bonding area 320, and the total length of the trace traversed in the region between the input terminal bonding area 310 and the output terminal bonding area 320 is greater than the size of the region between the input terminal bonding area 310 and the output terminal bonding area 320 in the first direction.

[0069] Preferably, the trace bends repeatedly in the area between the input terminal bonding area 310 and the output terminal bonding area 320.

[0070] In one embodiment, the wiring includes a plurality of repeated bending units 410. Each repeated bending unit 410 includes a first extension segment, a first U-shaped bending segment 412 and a second U-shaped bending segment 413 with opening directions facing each other, and a second extension segment. The first extension segment and the second extension segment extend along a second direction. The first end of the first extension segment is connected to the first end of the first U-shaped bending segment 412, the second end of the first U-shaped bending segment 412 is connected to the first end of the second U-shaped bending segment 413, and the second end of the second U-shaped bending segment 413 is connected to the second end of the first extension segment in an adjacent repeated bending unit 410.

[0071] The orthographic projection of each group of terminals along the first direction falls into the orthographic projection of the first extension segment along the first direction in the corresponding repeated bending unit 410. The orthographic projections of the first U-shaped bending segment 412, the second U-shaped bending segment 413, and the second extension segment along the first direction fall into the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals in the first direction.

[0072] Preferably, each of the first extension segments in the different repeated bending units 410 is distributed at different positions in the first direction.

[0073] In one embodiment, the bottom of the first U-shaped bend 412 extends into the space between two adjacent output terminals 321, and the bottom of the second U-shaped bend 413 extends into the space between two adjacent input terminals 311.

[0074] In one embodiment, a switching device 500 is provided between the second end of the trace and the pixel area 210.

[0075] In one embodiment, when the test signal transmitted to pixel area 210 is a first level signal, pixel area 210 is lit; when the test signal transmitted to pixel area 210 is a second level signal, pixel area 210 is turned off.

[0076] In one embodiment, each pixel region 210 includes a plurality of pixel units 211 of different colors, and the second end of the trace is connected to one of the pixel units 211 of different colors.

[0077] In one embodiment, the pixel units are arranged in an array, and the second end of the trace is simultaneously connected to several pixel units 211 of the same color in the same row or column.

[0078] For details regarding the display screen provided in this embodiment, please refer to the specific description in the test device for the display screen provided in the foregoing embodiment, which will not be repeated here.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A testing device for a display screen, characterized in that, The display screen includes a screen body, the screen body includes a display area and a bonding area, the display area includes a plurality of pixel areas, and the bonding area includes an input terminal bonding area and an output terminal bonding area; The test device for the display screen includes a trace disposed between the input terminal bonding area and the output terminal bonding area. The trace includes a first end and a second end, the first end being used to receive a test signal, and the second end being connected to the pixel area. The direction from the input terminal bonding area to the output terminal bonding area is a first direction, and the trace passes through the area between the input terminal bonding area and the output terminal bonding area along the first direction; The wiring includes several repeated bending units, each repeated bending unit including a first extension segment, a first U-shaped bending segment and a second U-shaped bending segment with opening directions facing each other, and a second extension segment. The first extension segment and the second extension segment extend along a second direction. The first end of the first extension segment is connected to the first end of the first U-shaped bending segment, the second end of the first U-shaped bending segment is connected to the first end of the second U-shaped bending segment, and the second end of the second U-shaped bending segment is connected to the second end of the first extension segment in an adjacent repeated bending unit. The second direction intersects with the first direction.

2. The testing device for a display screen according to claim 1, characterized in that, The input terminal bonding area includes a plurality of input terminals arranged along a second direction, and the output terminal bonding area includes a plurality of output terminals arranged along the second direction. The plurality of input terminals and the plurality of output terminals are aligned one-to-one along the first direction, and an output terminal and an input terminal aligned in the first direction constitute a set of terminals.

3. The testing apparatus for a display screen according to claim 1, characterized in that, The second direction is perpendicular to the first direction.

4. The testing apparatus for a display screen according to claim 2, characterized in that, The orthographic projection of each group of terminals along the first direction falls within the orthographic projection of the first extension segment along the first direction in the corresponding repeated bending unit. The orthographic projections of the first U-shaped bending segment, the second U-shaped bending segment, and the second extension segment along the first direction fall within the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals in the first direction.

5. The testing apparatus for a display screen according to claim 4, characterized in that, Each of the first extended line segments in different repeated bending units is distributed at different positions in the first direction.

6. The testing apparatus for a display screen according to claim 4, characterized in that, The bottom of the first U-shaped bend extends into the space between two adjacent output terminals, and the bottom of the second U-shaped bend extends into the space between two adjacent input terminals.

7. The testing apparatus for a display screen according to claim 1, characterized in that, A switching device is provided between the second end of the trace and the pixel area.

8. The testing apparatus for a display screen according to claim 1, characterized in that, When the test signal transmitted to the pixel area is a first-level signal, the pixel area is lit; when the test signal transmitted to the pixel area is a second-level signal, the pixel area is turned off.

9. The testing apparatus for a display screen according to claim 1, characterized in that, Each pixel region includes several pixel units of different colors, and the second end of the trace is connected to one of the pixel units of different colors.

10. The testing apparatus for a display screen according to claim 9, characterized in that, Each of the pixel units is arranged in an array, and the second end of the trace is simultaneously connected to several pixel units of the same color in the same row or column.

11. A display screen, characterized in that, The device includes a screen body, which includes a display area and a bonding area. The display area includes a plurality of pixel areas, and the bonding area includes an input terminal bonding area and an output terminal bonding area. A trace is provided between the input terminal bonding area and the output terminal bonding area. The trace includes a first end and a second end. The first end is used to receive a test signal, and the second end is connected to the pixel area. The direction from the input terminal bonding area to the output terminal bonding area is a first direction, and the trace passes through the area between the input terminal bonding area and the output terminal bonding area along the first direction; The wiring includes several repeated bending units, each repeated bending unit including a first extension segment, a first U-shaped bending segment and a second U-shaped bending segment with opening directions facing each other, and a second extension segment. The first extension segment and the second extension segment extend along a second direction. The first end of the first extension segment is connected to the first end of the first U-shaped bending segment, the second end of the first U-shaped bending segment is connected to the first end of the second U-shaped bending segment, and the second end of the second U-shaped bending segment is connected to the second end of the first extension segment in an adjacent repeated bending unit. The second direction intersects with the first direction.

12. The display screen according to claim 11, characterized in that, The orthographic projection of each group of terminals along the first direction falls within the orthographic projection of the first extension segment along the first direction in the corresponding repeated bending unit. The orthographic projections of the first U-shaped bending segment, the second U-shaped bending segment, and the second extension segment along the first direction fall within the orthographic projection of the interval area between the group of terminals and the adjacent group of terminals in the first direction. The first output terminal and the input terminal aligned in the first direction constitute a group of terminals.

13. The display screen according to claim 12, characterized in that, Each of the first extended line segments in different repeated bending units is distributed at different positions in the first direction.

Images