Display module test bridging flat cable and display module test device

Abstract

The utility model discloses a display module test bridging flat cable and a display module test device. Wherein the flat cable comprises a first connection bonding pad and a first test point, the first test point comprises a first windowing bonding pad and a first through hole, the first windowing bonding pad is a disconnection bonding pad, and the bonding pad allows disconnection or reconnection of a line at any time according to needs, simulates different working states and accurately positions a fault position. Through the disconnection function of the first windowing bonding pad, a tester can gradually reduce the fault range and quickly determine a fault element or circuit, so that the pertinence and efficiency of the test are greatly improved, and the invalid time generated by comprehensive troubleshooting is reduced. According to the utility model, not only is the physical structure improved, but also the test function is expanded, so that the flat cable becomes a debugging tool in the test process, and the accuracy of fault positioning and the test efficiency are improved by finely controlling signal paths and acquisition.

Description

Technical Field

[0001] The utility model relates to the field of display module testing, in particular to a display module testing bridge cable and a display module testing device. Background Art

[0002] With the continuous development of technology such as process, equipment and materials, Thin Film Transistor Liquid Crystal Display (TFT-LCD) has made remarkable progress. TFT-LCD is a display technology that uses thin film transistors to control liquid crystal molecules, which can achieve high-definition, high-contrast and fast-response image display.

[0003] As an important component of display devices, the improvement of LCD display module's technical capabilities is crucial to meet the growing needs of customers. Customers' requirements for LCD display modules are getting higher and higher. Among them, narrow-frame display modules have become the main development trend of high-quality display modules due to their simplicity, beauty, and large viewing area of ​​the same size, and have also put forward higher requirements for screen testing.

[0004] Traditional test cable designs usually only have basic signal transmission functions and lack flexible debugging methods. When a fault occurs, testers often need to locate the problem by step-by-step troubleshooting, which is time-consuming and error-prone. In addition, due to the single structure of the test cable, the line connection status cannot be adjusted in a targeted manner during the test, making it difficult to simulate real fault scenarios, further increasing the difficulty of locating the fault.

[0005] Obviously, the existing display module testing technology is difficult to directly determine the specific components or circuits that have failed, thereby slowing down the entire testing process and reducing testing efficiency.

[0006] It can be seen that the existing technology still needs to be improved and developed. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a display module test bridge cable and a display module test device, aiming to solve the problem that the display module test technology in the prior art is difficult to directly determine the specific components or circuits where the fault occurs when locating some fault locations, resulting in low testing efficiency.

[0008] The technical solution of the utility model is as follows:

[0009] A display module test bridge cable, comprising:

[0010] A first row of wires, wherein a first connection pad and a first test point are arranged on the first row of wires;

[0011] The first test point includes a first window pad and a first through hole;

[0012] The first window pad is a disconnect pad.

[0013] The effect of the above scheme is that the first window pad is used as a disconnect pad, and the line can be disconnected or reconnected at any time as needed to simulate different working conditions. This design allows testers to flexibly adjust the line connection status without disassembling or replacing the wiring, so as to locate the fault position more accurately. Obviously, the disconnection function of the first window pad can help testers gradually narrow the scope of the fault and quickly determine the faulty component or line, which greatly improves the pertinence and efficiency of the test and reduces the invalid time caused by comprehensive troubleshooting. The first through hole is connected to the test equipment for signal collection and analysis. By connecting the first through hole to the test equipment, the signal transmission situation can be monitored and analyzed in real time, and abnormal signals can be quickly identified. This design enhances the convenience and accuracy of data collection during the test process, and helps to quickly locate and repair faults.

[0014] It is not difficult to understand that the design of the first window pad and the first through hole is not only an improvement in the physical structure, but also an expansion of the test function. By adding these functional pads and through holes, the cable is no longer just a medium for signal transmission, but a key debugging tool in the test process. It improves the accuracy of fault location by finely controlling the signal path and signal acquisition. Especially in complex circuits, the occurrence of faults is often uncertain and complex. By simulating different fault scenarios, we can better understand the cause of the fault and formulate corresponding repair strategies.

[0015] In a further preferred embodiment, the display module tests the bridge cable, wherein the first test point includes a first window pad and a first through hole, and the distance between the first window pad and the first through hole is smaller than the distance between the first connecting pad and the first through hole.

[0016] The effect of the above solution is that the first connection pad is far away from the first window pad and the first through hole, which is conducive to providing sufficient distance for the connection between the first connection pad and the connector. Moreover, placing the first window pad and the first through hole of similar size together is conducive to wiring to form a compact wiring structure.

[0017] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad and the first connecting pad is smaller than the distance between the first through hole and the first connecting pad.

[0018] The effect of the above scheme is that: since the distance between the first window pad and the first connecting pad is smaller than the distance between the first through hole and the first connecting pad, the first through hole is located on the side of the first window pad away from the first connecting pad, thereby reducing the interference caused by the first connecting pad to the connection between the test equipment and the first through hole.

[0019] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad and the first through hole is 0.5 mm-10 mm.

[0020] The effect of the above scheme is that the distance between the first window pad and the first through hole is 0.5mm-10mm. Compared with a larger distance, it reduces the space waste caused by excessive spacing, makes the overall structure of the cable more compact, and helps to achieve miniaturization and lightweight design of the cable, and may also reduce manufacturing costs.

[0021] In a further preferred embodiment, the display module test bridge cable, wherein the display module test bridge cable, further comprises: a second cable, wherein the second cable is provided with a second connection pad and a second test point;

[0022] The second test point includes a second window pad and a second through hole, wherein the distance between the second window pad and the second through hole is smaller than the distance between the second connecting pad and the second through hole; and the distance between the second window pad and the second connecting pad is smaller than the distance between the second through hole and the second connecting pad.

[0023] The distance between the first connecting pad and the second connecting pad is greater than the distance between the first through hole and the second through hole;

[0024] The distance between the first connecting pad and the second connecting pad is greater than the distance between the first window pad and the second window pad.

[0025] The effect of the above scheme is that the larger spacing between the first connection pad and the second connection pad provides more ample operating space for the access of the connector, reduces the difficulty of connection and the possibility of error, and makes the connection process more convenient and efficient. The second window pad and the second through hole are close to each other, so that the components can be reasonably arranged in the limited space of the cable arrangement, avoiding excessive space occupied by the dispersed distribution of components, thereby realizing effective use of space and facilitating the miniaturization and compact design of the cable arrangement.

[0026] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad and the second window pad is greater than the distance between the first through hole and the second through hole.

[0027] The effect of the above scheme is that the distance between the first window pad and the second window pad is greater than the distance between the first through hole and the second through hole, so that there is a relatively large interval between the window pads, which is beneficial when welding, disconnecting or connecting operations. The adjacent window pads interfere with each other less, and the state of each window pad can be controlled more accurately and independently.

[0028] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first through hole and the second through hole is 0.5 mm-10 mm.

[0029] The effect of the above solution is that the distance between the first through hole and the second through hole is 0.5 mm-10 mm, which can achieve a compact layout under limited space and save wiring space.

[0030] In a further preferred embodiment, the display module test bridge cable, wherein the number of the first cables is multiple, the multiple first cables are arranged side by side, wherein the first connecting pads on the multiple first cables are arranged side by side to form a first connecting pad area, the first through holes on the multiple first cables are arranged side by side to form a first through hole area, and the first window pads on the multiple first cables are arranged side by side to form a first window pad area;

[0031] There are multiple second rows of wires, and the multiple second rows of wires are arranged side by side, wherein the second connecting pads on the multiple second rows of wires are arranged side by side to form a second connecting pad area, the second through holes on the multiple second rows of wires are arranged side by side to form a second through hole area, and the second window pads on the multiple second rows of wires are arranged side by side to form a second window pad area;

[0032] The number of the first rows of wires is equal to the number of the second rows of wires.

[0033] The effect of the above scheme is that multiple first arrays of wires and second arrays of wires are arranged side by side, and the corresponding connecting pads, through holes, and window pads also form concentrated areas, so that the structure of the wires is clear and regular, which is conducive to standardized processing and assembly during the production process, reduces the production difficulty and cost, and also facilitates the rapid positioning and handling of problems in subsequent maintenance.

[0034] In a further preferred embodiment, the display module test bridge cable, wherein the length of the first connection pad area in the side-by-side direction is less than the length of the first through hole area in the side-by-side direction, and the length of the first through hole area in the side-by-side direction is equal to the length of the first window pad area in the side-by-side direction;

[0035] The length of the second connecting pad area in the side-by-side direction is smaller than the length of the second through hole area in the side-by-side direction, and the length of the second through hole area in the side-by-side direction is equal to the length of the second window pad area in the side-by-side direction.

[0036] The effect of the above scheme is that the length of the through-hole area in the side-by-side direction is large, which can accommodate multiple large through-holes arranged in a row, providing sufficient space for the layout of the through-holes, avoiding connection difficulties or instability caused by insufficient space. The length of the connecting pad area in the side-by-side direction is smaller than the length of the through-hole area in the side-by-side direction, so that the connecting pad does not occupy too much space, which is more conducive to connection with an external connector. The length of the through-hole area in the side-by-side direction is equal to the length of the window pad area in the side-by-side direction, making the wiring structure more regular.

[0037] A display module testing device comprises: the display module testing bridge cable as described above, and a connector connected to the display module testing bridge cable.

[0038] The effect of the above scheme is that the display module test bridge cable in the display module test device is connected to the mainboard or display module through a connector, so as to realize the test of the display module, wherein the first connection pad can be connected to the mainboard or display module through a connector to realize the transmission of data between the mainboard and the display module. The disconnected first window pad can be disconnected or connected at any time during the test process; it is convenient to simulate different line states, so as to more comprehensively test and analyze line performance; the first through hole can be connected to the test equipment, which is convenient for connection to collect data and test, and can quickly locate the problem point during the test process, thereby improving the test efficiency and the speed of problem solving.

[0039] Compared with the prior art, the utility model displays a module test bridge cable, including a first connection pad and a first test point arranged on the first cable, the first test point including a first window pad and a first through hole, the first window pad being a disconnect pad, allowing the line to be disconnected or reconnected at any time as needed, simulating different working conditions, and flexibly adjusting the line connection state without disassembling or replacing the cable, so as to locate the fault position more accurately. Through the disconnection function of the first window pad, the tester can gradually narrow the scope of the fault, quickly determine the faulty component or circuit, greatly improve the pertinence and efficiency of the test, and reduce the invalid time caused by comprehensive investigation. The first through hole is connected to the test equipment for signal acquisition and analysis, real-time monitoring and identification of abnormal signals, enhancing the convenience and accuracy of data acquisition, and facilitating the rapid location and repair of faults. The utility model is not only an improvement in physical structure, but also an extension of the test function, making the cable a debugging tool in the test process, and improving the accuracy of fault location and test efficiency by finely controlling the signal path and acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of a display module test bridge cable in one embodiment of the utility model.

[0041] Figure 2 It is a schematic diagram showing the structure of a module testing device in one embodiment of the utility model. DETAILED DESCRIPTION

[0042] This embodiment provides a display module test bridge cable and a display module test device. In order to make the purpose, technical solution and effect of this embodiment clearer and more specific, the following further describes this embodiment in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiment described here is only used to explain this embodiment and is not used to limit this embodiment.

[0043] Before introducing the touch screen test device of this embodiment, the process of display module testing before improvement is briefly introduced. During the test and debugging of the LCD TFT, a separate simulation test is performed to detect abnormalities caused by the lack of certain signals. Conventional test adapter cables only connect the LCD TFT to the test motherboard or the mobile phone motherboard directly through connectors at both ends, without any test points in the middle. When problems occur, they cannot be checked and measured immediately. Therefore, engineers cannot measure the voltage and information collection problems of certain networks in real time under current conditions.

[0044] To do this, see Figure 1 The present embodiment provides a display module test bridge cable, including: a first cable 10, on which a first connecting pad 101 and a first test point 11 are arranged; the first test point 11 includes a first window pad 102 and a first through hole 103; the first window pad 102 is a disconnect pad.

[0045] The first row of cables 10 can be connected to the connector, and plays a basic role in connecting the mainboard and the display module.

[0046] The first connection pad 101 is a connection point on the first array cable 10 , which can be connected with the connector during testing, and then connected with the mainboard or the display module, and is responsible for realizing data transmission between the mainboard and the display module.

[0047] The first test point 11 can provide more test methods for testing. Specifically, the first test point 11 can provide data collection for the test equipment by arbitrarily disconnecting the pads connecting certain networks or connecting the traces convenient for measurement on the pads during the TFT test of the liquid crystal display.

[0048] The first window pad 102 is a disconnect pad, which can be disconnected or connected at any time during the test process, and can easily simulate different line states and more comprehensively test and analyze line performance. During the test process, the disconnect pad can be connected through solder paste, but is not limited to being connected through solder paste. It can be seen that the first window pad 102 is equivalent to the line switch of the first row of cables 10.

[0049] The first through hole 103 (also called the first via) is the connection point of the test equipment pin header, which can be connected to the test equipment to facilitate data collection and testing, and help to quickly locate the problem point during the test process, improve the test efficiency and problem solving speed. Specifically, the first through hole 103 can be welded with the corresponding pin header to achieve connection with other test equipment and complete data collection and analysis.

[0050] The first cable 10 has one or two of the first window pad 102 and the first through hole 103. Among them, the first connection pad 101 can be connected to the mainboard or display module through a connector to realize the transmission of data between the mainboard and the display module. The disconnected first window pad 102 can be disconnected or connected at any time during the test process, and can simulate different line states, so as to more comprehensively test and analyze the line performance; the first through hole 103 can be connected to the test equipment, which is convenient for connection to collect data and test, and can quickly locate the problem point during the test process, thereby improving the test efficiency and the speed of problem solving.

[0051] In a further preferred embodiment, the display module tests the bridge cable, wherein the first test point 11 includes a first window pad 102 and a first through hole 103 , and the distance between the first window pad 102 and the first through hole 103 is smaller than the distance between the first connecting pad 101 and the first through hole 103 .

[0052] In the wiring structure, the first window pad 102 may be close to the first through hole 103, while the first connection pad 101 is relatively far from the first through hole 103. For example, in the first wiring 10, from left to right, there are the first connection pad 101, the first window pad 102, and the first through hole 103, wherein the first connection pad 101 is spaced a large distance from the first window pad 102. Optionally, the distance between the first connection pad 101 and the first window pad 102 is 5-30 times the distance between the first window pad 102 and the first through hole 103.

[0053] It should be noted that the distance refers to the straight-line distance between the center points of two target objects.

[0054] In this embodiment, the first connection pad 101 is far away from the first window pad 102 and the first through hole 103, which is conducive to providing sufficient distance for the connection between the first connection pad 101 and the connector. Moreover, placing the first window pad 102 and the first through hole 103 of similar size together is conducive to wiring to form a compact wiring structure.

[0055] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad 102 and the first connecting pad 101 is smaller than the distance between the first through hole 103 and the first connecting pad 101 .

[0056] In the first array cable 10, the first window pad 102 is disposed adjacent to the first through hole 103 and is located on a side of the first through hole 103 close to the first connection pad 101. For example, starting from one end of the first array cable 10, the first connection pad 101, the first window pad 102, and the first through hole 103 are sequentially provided, wherein the first window pad 102 is disposed adjacent to the first through hole 103.

[0057] Since the distance between the first window pad 102 and the first connecting pad 101 is smaller than the distance between the first through hole 103 and the first connecting pad 101, the first through hole 103 is located on the side of the first window pad 102 away from the first connecting pad 101, thereby reducing the interference caused by the first connecting pad 101 when connecting the test equipment to the first through hole 103.

[0058] The first array cable 10 also includes a third connection pad. Starting from one end of the first array cable 10, along the line are the first connection pad 101, the first window pad 102, the first through hole 103 and the third connection pad. The first connection pad 101 is located at one end of the first array cable 10, and the third connection pad is located at the other end of the first array cable 10. The third connection pad is used to connect to the connector to achieve connection with the mainboard or display module.

[0059] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad 102 and the first through hole 103 is 0.5 mm-10 mm.

[0060] Specifically, the distance between the first window pad 102 and the first through hole 103 is 1 mm, 2.54 mm or 8 mm.

[0061] The distance between the first window pad 102 and the first through hole 103 is reduced to a general routing distance. Compared with a larger distance, it reduces the space waste caused by excessive spacing, making the overall structure of the cable more compact, which helps to achieve miniaturization and lightweight design of the cable, and may also reduce manufacturing costs.

[0062] In a further preferred embodiment, the display module tests the bridge cable, wherein the display module tests the bridge cable further comprises: a second cable 20 , on which a second connecting pad 201 and a second test point are disposed.

[0063] The second array cable 20 has a similar structure to the first array cable 10 , and the second connecting pad 201 and the second test point can achieve the same functions and effects as the first array cable 10 .

[0064] The second test point includes a second window pad 202 and a second through hole 203, and the distance between the second window pad 202 and the second through hole 203 is smaller than the distance between the second connecting pad 201 and the second through hole 203; the distance between the second window pad 202 and the second connecting pad 201 is smaller than the distance between the second through hole 203 and the second connecting pad 201.

[0065] In the second array cable 20, the second window pad 202 is disposed adjacent to the second through hole 203 and is located on a side of the second through hole 203 close to the second connection pad 201. For example, starting from one end of the second array cable 20, the second connection pad 201, the second window pad 202, and the second through hole 203 are sequentially provided, wherein the second window pad 202 is disposed adjacent to the second through hole 203.

[0066] The second array cable 20 also includes a fourth connection pad. Starting from the two ends of the second array cable 20, along the line are the second connection pad 201, the second window pad 202, the second through hole 203 and the fourth connection pad. The second connection pad 201 is located at one end of the second array cable 20, and the fourth connection pad is located at the other end of the second array cable 20. The fourth connection pad is used to connect to the connector to achieve connection with the mainboard or display module.

[0067] The distance between the first connecting pad 101 and the second connecting pad 201 is greater than the distance between the first through hole 103 and the second through hole 203 ; the distance between the first connecting pad 101 and the second connecting pad 201 is greater than the distance between the first window pad 102 and the second window pad 202 .

[0068] For example, the first connection pad 101 is located at one side edge of the display module test bridge cable, and the second connection pad 201 is located at the other side edge of the display module test bridge cable, and the distance between the two is relatively far. The first through hole 103 and the second through hole 203 are located in the middle of the display module test bridge cable, and the distance between the two is relatively small. The first window pad 102 is located between the first through hole 103 and the first connection pad 101, and is relatively close to the first through hole 103, and the second window pad 202 is located between the second through hole 203 and the second connection pad 201, and is relatively close to the second through hole 203.

[0069] The larger spacing between the first connection pad 101 and the second connection pad 201 provides a wider operating space for the access of the connector, reduces the difficulty of connection and the possibility of error, and makes the connection process more convenient and efficient. The second window pad 202 and the second through hole 203 are close to each other, which can reasonably arrange the components in the limited space of the cable arrangement, avoiding the excessive space occupied by the dispersed distribution of the components, thereby realizing the effective use of space and facilitating the miniaturization and compact design of the cable arrangement.

[0070] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first window pad 102 and the second window pad 202 is greater than the distance between the first through hole 103 and the second through hole 203 .

[0071] In the layout of the wiring, the first wiring 10 is arranged adjacent to the second wiring 20, the first through hole 103 and the second through hole 203 are relatively close, and the first through hole 103 and the second through hole 203 are arranged adjacent to each other. The first through hole 103 is arranged adjacent to the first window pad 102, and the first window pad 102 is located on the side of the first through hole 103 away from the second through hole 203. The second through hole 203 is arranged adjacent to the second window pad 202, and the second window pad 202 is located on the side of the second through hole 203 away from the first through hole 103.

[0072] Optionally, the first window pad 102, the first through hole 103, the second through hole 203 and the second window pad 202 are aligned in sequence to form a line, that is, the center points of the first window pad 102, the first through hole 103, the second through hole 203 and the second window pad 202 are on a straight line.

[0073] The distance between the first window pad 102 and the second window pad 202 is greater than the distance between the first through hole 103 and the second through hole 203, so that there is a relatively large interval between the window pads, which is beneficial in that adjacent window pads interfere with each other less during welding, disconnection or connection operations, and the state of each window pad can be controlled more accurately and independently.

[0074] In a further preferred embodiment, the display module tests the bridge cable, wherein the distance between the first through hole 103 and the second through hole 203 is 0.5 mm-10 mm.

[0075] Specifically, the distance between the first through hole 103 and the second through hole 203 is 1 mm, 2.54 mm or 8 mm.

[0076] The distance between the first through hole 103 and the second through hole 203 is 0.5 mm-10 mm, which can achieve a compact layout under limited space and save wiring space.

[0077] In a further preferred embodiment, a display module tests a bridge cable, wherein the number of first cables 10 is multiple, and the multiple first cables 10 are arranged side by side, wherein the first connecting pads 101 on the multiple first cables 10 are arranged side by side to form a first connecting pad 101 area, the first through holes 103 on the multiple first cables 10 are arranged side by side to form a first through hole 103 area, and the first window pads 102 on the multiple first cables 10 are arranged side by side to form a first window pad 102 area.

[0078] A plurality of first arrays of wires 10 are closely arranged side by side, and each first array of wires 10 has a first connection pad 101, a first through hole 103, and a first window pad 102 at a specific position. For example, after the first connection pads 101 at the same position on a plurality of first arrays of wires 10 are arranged side by side, a row of first connection pads 101 is formed, i.e., a first connection pad 101 region. Similarly, after the first through holes 103 on a plurality of first arrays of wires 10 are arranged side by side, a row of first through holes 103 is formed, i.e., a first through hole 103 region. The first window pads 102 on a plurality of first arrays of wires 10 are arranged side by side to form a row of first window pads 102, i.e., a first window pad 102 region.

[0079] There are multiple second wiring lines 20, and the multiple second wiring lines 20 are arranged side by side, wherein the second connecting pads 201 on the multiple second wiring lines 20 are arranged side by side to form a second connecting pad 201 area, the second through holes 203 on the multiple second wiring lines 20 are arranged side by side to form a second through hole 203 area, and the second window pads 202 on the multiple second wiring lines 20 are arranged side by side to form a second window pad 202 area.

[0080] A plurality of second arrays of wires 20 are closely arranged side by side, and each second array of wires 20 has a second connection pad 201, a second through hole 203, and a second window pad 202 at a specific position. For example, after the second connection pads 201 at the same position on a plurality of second arrays of wires 20 are arranged side by side, a row of second connection pads 201 is formed, i.e., a second connection pad 201 region. Similarly, after the second through holes 203 on a plurality of second arrays of wires 20 are arranged side by side, a row of second through holes 203 is formed, i.e., a second through hole 203 region. The second window pads 202 on a plurality of second arrays of wires 20 are arranged side by side to form a row of second window pads 202, i.e., a second window pad 202 region.

[0081] The display module tests the bridge cables, and the plurality of first cables 10 and the plurality of second cables 20 are arranged alternately, that is, the first cables 10 and the second cables 20 are arranged alternately. Compared with the above-mentioned parallel arrangement, the first window pad 102 of the first cable 10 and the first through hole 103, the second through hole 203 and the second window pad 202 corresponding to the second cable 20 are aligned in sequence to form a column.

[0082] The number of the first array of cables 10 is equal to the number of the second array of cables 20. Each first array of cables 10 has a corresponding second array of cables 20, and the first array of cables 10 and the second array of cables 20 can fill the empty space between them, thereby improving space utilization.

[0083] A plurality of first array cables 10 and second array cables 20 are arranged side by side, and the corresponding connection pads, through holes, and window pads are also respectively formed into concentrated areas, so that the structure of the cables is clear and regular, which is conducive to standardized processing and assembly during the production process, reduces the production difficulty and cost, and also facilitates the rapid positioning and handling of problems in subsequent maintenance.

[0084] In a further preferred embodiment, the display module tests the bridge cable, wherein the length of the first connecting pad 101 area in the side-by-side direction is less than the length of the first through hole 103 area in the side-by-side direction, and the length of the first through hole 103 area in the side-by-side direction is equal to the length of the first window pad 102 area in the side-by-side direction.

[0085] The area parallel direction is the direction in which the corresponding window pads or corresponding through holes are arranged. The length of the first through hole 103 area parallel direction is the length of the arrangement of the first through hole 103. The length of the first window pad 102 area parallel direction is the length of the arrangement of the first window pad 102.

[0086] Since the size of the first connection pad 101 is smaller than the size of the first through hole 103 and the first window pad 102, in order to facilitate the plugging with the connector and save costs, the length of the first connection pad 101 area is relatively small, while the first through hole 103 area and the first window pad 102 area are relatively large. Generally, the first through hole 103 and the first window pad 102 have the same size, and the first through hole 103 area is the same size as the first window pad 102 area, which can save wiring space.

[0087] The length of the second connection pads 201 area in the side-by-side direction is smaller than the length of the second through hole 203 area in the side-by-side direction, and the length of the second through hole 203 area in the side-by-side direction is equal to the length of the second window pads 202 area in the side-by-side direction.

[0088] Since the size of the second connection pad 201 is smaller than the size of the second through hole 203 and the second window pad 202, in order to facilitate the plugging with the connector and save costs, the length of the second connection pad 201 area is relatively small, while the second through hole 203 area and the second window pad 202 area are relatively large. Generally, the second through hole 203 and the second window pad 202 have the same size, and the second through hole 203 area is the same size as the second window pad 202 area, which can save wiring space.

[0089] The display module test bridge cable presents a structure that is wide in the middle and narrow at both ends (diamond structure). The first through hole 103 area, the first window pad 102 area, the second through hole 203 area, and the second window pad 202 area are all located in the middle, and the first window pad 102 and the second window pad 202 are located at both ends respectively. Moreover, the first cable 10 has a first routing segment connecting the first window pad 102 and the first connecting pad 101, and the first cable 10 has a second routing segment connecting the first through hole 103 and the third connecting pad; the second cable 20 has a third routing segment connecting the second window pad 202 and the second connecting pad 201, and the second cable 20 has a fourth routing segment connecting the second through hole 203 and the fourth connecting pad; when the first routing segment is mostly a straight line, the second routing segment is mostly an S-shaped curve, and the first routing segment is adjacent to the first routing segment. Most of the fourth routing segment is an S-shaped curve, and most of the third routing segment adjacent to the second routing segment is a straight line; when the first routing segment is mostly an S-shaped curve, most of the second routing segment is a straight line, the fourth routing segment adjacent to the first routing segment is mostly a straight line, and most of the third routing segment adjacent to the second routing segment is an S-shaped curve, which is conducive to making full use of limited wiring space, keeping the length of the first row of cables 10 and the length of the second row of cables 20 roughly consistent, and the difference between the lengths of multiple rows of cables does not exceed 10% of the length of the first row of cables 10.

[0090] The length of the through-hole area in the side-by-side direction is large, which can accommodate multiple large through-holes arranged in a row, providing sufficient space for the layout of the through-holes and avoiding connection difficulties or instability caused by insufficient space. The length of the connection pad area in the side-by-side direction is smaller than the length of the through-hole area in the side-by-side direction, so that the connection pad does not occupy too much space, which is more conducive to connection with an external connector. The length of the through-hole area in the side-by-side direction is equal to the length of the window pad area in the side-by-side direction, making the wiring structure more regular.

[0091] See also Figure 2 This embodiment further provides a display module testing device, which includes: the display module testing bridge cable 30 as described above, and a connector 40 connected to the display module testing bridge cable 30.

[0092] One end of the display module test bridge cable 30 is connected to the test motherboard or mobile phone through the connector 40, and the other end of the display module test bridge cable 30 is connected to the display screen to implement the test of the display screen. When data collection is required, some test equipment can be connected to the through holes on the cable.

[0093] In the display module test device, the display module test bridge cable 30 is connected to the mainboard or display module through the connector 40, so as to test the display module, wherein the first connection pad 101 can be connected to the mainboard or display module through the connector 40 to realize the data transmission between the mainboard and the display module. The disconnected first window pad 102 can be disconnected or connected at any time during the test process; it is convenient to simulate different line states, so as to test and analyze the line performance more comprehensively; the first through hole 103 can be connected to the test equipment, which is convenient for connection to collect data and test, and can quickly locate the problem point during the test process, thereby improving the test efficiency and the speed of problem solving.

[0094] The following describes the use of the display module test bridge cable 30 in combination with actual scenarios.

[0095] The display module test bridge cable 30 is a flexible dual circuit board, which is wide in the middle and narrow at both ends; the display module test bridge cable 30 is connected to the mobile phone mainboard and the engineering test board at one end through the connecting pad (such as the first connecting pad 101 and the second connecting pad 201), and is connected to the TFT screen at the other end; each cable is provided with a disconnected window pad and a through hole (via, with an equal spacing of 2.54mm, used for welding the corresponding pin header). Among them, the window pad is the disconnection in the middle of the line, and adding a pad window at two breakpoints is equivalent to adding a window pad at the breakpoint after the disconnection in the middle of the line, which is convenient for disconnection or connection at any time during testing. The through hole is a via added in the middle of the line, which can be welded to the pin header, which is convenient for adding pin-type components or capturing line signal changes at any time during testing.

[0096] During the test, first, when testing the mobile phone or debugging the project, the disconnected window pads (such as the first window pad 102 and the second window pad 202) are connected with tin. Then, the matching connector 40 on the corresponding test board and the corresponding matching connector 40 of the TFT liquid crystal display are respectively welded through the connecting pads at both ends (such as the first connecting pad 101, the second connecting pad 201, etc.). Then, the connector 40 at one end of the cable is buckled on the mobile phone motherboard or the engineering debugging board, and the connector 40 at the other end is buckled on the TFT liquid crystal display. Finally, during the mobile phone testing or engineering debugging process, a network or signal line can be connected and disconnected at any time through the window pads (such as the first window pad 102 and the second window pad 202), or connected to other networks or signal lines; it is also possible to weld the pins through the through holes (such as the first through hole 103 and the second through hole 203), and connect the corresponding test equipment to the corresponding network or signal line for data acquisition and voltage testing.

[0097] When problems occur during TFT screen testing and debugging, the problem points can be immediately eliminated and optimized. By adding a window pad between each trace on the test adapter cable, the window pad has two disconnected pad connection points. When in use, the two pad connection points are connected by solder paste. When testing or debugging, any network can be disconnected or additional voltage can be applied to it. The problems that may occur on the LCD screen TFT can be analyzed and the causes can be quickly located to improve them.

[0098] Compared with the prior art, the first cable 10 in the display module test bridge cable 30 of the utility model has one or two of the first window pad 102 and the first through hole 103. Among them, the first connection pad 101 can be connected to the mainboard or the display module through the connector 40 to realize the transmission of data between the mainboard and the display module. The disconnected first window pad 102 can be disconnected or connected at any time during the test process; it is convenient to simulate different line states, so as to test and analyze the line performance more comprehensively; the first through hole 103 can be connected to the test equipment, which is convenient for connection to collect data and test, and can quickly locate the problem point during the test process, thereby improving the test efficiency and the speed of problem solving.

[0099] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display module test bridge cable, characterized in that: include: A first row of wires, wherein a first connection pad and a first test point are arranged on the first row of wires; The first test point includes a first window pad and a first through hole; The first window pad is a disconnect pad.

2. The display module test bridge cable according to claim 1, characterized in that: The first test point includes a first window pad and a first through hole, and a distance between the first window pad and the first through hole is smaller than a distance between the first connecting pad and the first through hole.

3. The display module test bridge cable according to claim 2, characterized in that: The distance between the first window pad and the first connecting pad is smaller than the distance between the first through hole and the first connecting pad.

4. The display module test bridge cable according to claim 3, characterized in that: The display module test bridge cable further includes: a second cable, wherein the second cable is provided with a second connection pad and a second test point; The second test point includes a second window pad and a second through hole, wherein the distance between the second window pad and the second through hole is smaller than the distance between the second connecting pad and the second through hole; and the distance between the second window pad and the second connecting pad is smaller than the distance between the second through hole and the second connecting pad. The distance between the first connecting pad and the second connecting pad is greater than the distance between the first through hole and the second through hole; The distance between the first connecting pad and the second connecting pad is greater than the distance between the first window pad and the second window pad.

5. The display module test bridge cable according to claim 4, characterized in that: The distance between the first window pad and the second window pad is greater than the distance between the first through hole and the second through hole.

6. The display module test bridge cable according to claim 4, characterized in that: The distance between the first through hole and the second through hole is 0.5 mm-10 mm.

7. The display module test bridge cable according to claim 4, characterized in that: There are multiple first rows of wires, and the multiple first rows of wires are arranged side by side, wherein the first connecting pads on the multiple first rows of wires are arranged side by side to form a first connecting pad area, the first through holes on the multiple first rows of wires are arranged side by side to form a first through hole area, and the first window pads on the multiple first rows of wires are arranged side by side to form a first window pad area; There are multiple second rows of wires, and the multiple second rows of wires are arranged side by side, wherein the second connecting pads on the multiple second rows of wires are arranged side by side to form a second connecting pad area, the second through holes on the multiple second rows of wires are arranged side by side to form a second through hole area, and the second window pads on the multiple second rows of wires are arranged side by side to form a second window pad area; The number of the first rows of wires is equal to the number of the second rows of wires.

8. The display module test bridge cable according to claim 7, characterized in that: The length of the first connecting pad area in the side-by-side direction is less than the length of the first through hole area in the side-by-side direction, and the length of the first through hole area in the side-by-side direction is equal to the length of the first window pad area in the side-by-side direction; The length of the second connecting pad area in the side-by-side direction is smaller than the length of the second through hole area in the side-by-side direction, and the length of the second through hole area in the side-by-side direction is equal to the length of the second window pad area in the side-by-side direction.

9. The display module test bridge cable according to claim 2, characterized in that: The distance between the first window pad and the first through hole is 0.5 mm-10 mm.

10. A display module testing device, characterized in that: include: A display module test bridge cable as claimed in any one of claims 1 to 9, and a connector connected to the display module test bridge cable.

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