Display panel and display device

Abstract

The utility model discloses a display panel and display device. The display panel includes lighting test circuit, data signal test point, a plurality of data signal output pads and multichannel data signal transmission line, and data signal test point is connected with a data signal output pad or a data signal transmission line through lighting test circuit to obtain a data signal. The utility model can realize that the data signal test point obtains a data signal in the limited space reservation, and then confirms the output enable signal that plays the coordinating role between the data signal and the scanning signal through a data signal, and improves the accuracy of driving display debugging.

Description

Technical Field

[0001] This utility model relates to the field of display panel technology, and in particular to a display panel and display device. Background Technology

[0002] Currently, driver chips that integrate gate and source drivers, with all critical pins independently exposed, lack space for reserved data signal test points. The absence of reserved data signal test points in the display panel manufacturing process prevents the acquisition of data signals, affecting display driver debugging and making it impossible to confirm the output enable signal that coordinates the data and scan signals. Utility Model Content

[0003] This utility model provides a display panel and display device to reserve data signal test points and acquire one data signal.

[0004] In a first aspect, the present invention provides a display panel, which includes a lamp testing circuit, a data signal testing point, multiple data signal output pads, and multiple data signal transmission lines.

[0005] The data signal test point is connected to a data signal output pad or a data signal transmission line through the lamp test circuit to obtain a data signal.

[0006] Optionally, the display panel may also include a flexible printed circuit board;

[0007] The data signal test point is the data signal test pad of the flexible printed circuit board;

[0008] The lighting test circuit includes multiple first test channel control switches;

[0009] The first pole of each of the first test channel control switches is connected to a data signal output pad; the first pole of any one of the first test channel control switches is connected to the data signal test pad.

[0010] Optionally, the lighting test circuit includes multiple second test channel control switches and an odd-numbered column of signal input lines;

[0011] The data signal test point is the signal input end of the odd-numbered column signal input line, and the odd-numbered column signal input line includes a first solder point;

[0012] The first pole of each of the second test channel control switches is connected to a data signal output pad, and the first pole of any of the second test channel control switches is connected to the first solder point.

[0013] Optionally, the lighting test circuit includes multiple third test channel control switches and an even-numbered column of signal input lines;

[0014] The data signal test point is the signal input end of the even-numbered column signal input line, and the even-numbered column signal input line includes a second solder point;

[0015] The first pole of each of the third test channel control switches is connected to a data signal output pad, and the first pole of any one of the third test channel control switches is connected to the second solder point.

[0016] Optionally, the lamp-lighting test circuit includes a data signal test auxiliary line and a common voltage line;

[0017] The data signal test auxiliary line is connected to the common voltage line;

[0018] The data signal test point is the signal input end of the data signal test auxiliary line, and the data signal test auxiliary line includes multiple cutting points and multiple third welding points;

[0019] The data signal test point is connected to one of the data signal transmission lines through any one of the third welding points, and at the same time, the connection with the common voltage line is cut off through the cutting point.

[0020] Optionally, the vertical projection of each of the data signal transmission lines onto the data signal test auxiliary line covers one of the third solder joints.

[0021] Optionally, the adjacent third welding points are not adjacent to each other.

[0022] Optionally, the cutting point is located between the connection point of the data signal test auxiliary line and the common voltage line and the third soldering point.

[0023] Optionally, the display panel further includes a driver chip connected to each of the data signal output pads.

[0024] Secondly, this utility model embodiment also provides a display device, which includes the display panel provided in any embodiment of this utility model.

[0025] This utility model embodiment achieves the connection between a data signal test point and a data signal output pad or a data signal transmission line by reusing the lamp test circuit after binding the driver chip to the display panel. This allows for the acquisition of a data signal by reserving a data signal test point in a limited space. Then, the output enable signal that plays a coordinating role between the data signal and the scan signal can be confirmed through a data signal, thereby improving the accuracy of driving display debugging. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a display panel provided for the prior art;

[0028] Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0033] Figure 7 This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Figure 1 A schematic diagram of the structure of a display panel provided for the prior art, such as Figure 1 As shown, the display panel includes an output pad 10, an input pad 20, a lamp-lighting test circuit 30, and a flexible printed circuit board pad 40, all of which integrate a gate-driven and source-driven driver chip. The output pad 10 includes multiple data signal output pads 110 and multiple scan signal output pads 120. The lamp-lighting test circuit 30 includes multiple test channel control switches, test channel signal lines ADD, scan signal lines G0, odd-numbered column signal input lines D0, even-numbered column signal input lines DE, and a common voltage line VCOM.

[0037] The test channel signal line ADD is connected to the control terminal of each test channel control switch. The first terminal of each test channel control switch is connected to a data signal output pad 110 or a scan signal output pad 120. The second terminal of the test channel control switch connected to the scan signal output pad 120 is connected to the scan signal line G0. The second terminal of the test channel control switch connected to the odd-numbered column data signal output pad 110 is connected to the odd-numbered column signal input line D0. The second terminal of the test channel control switch connected to the even-numbered column data signal output pad 110 is connected to the even-numbered column signal input line DE. Part of the driver chip's input pads 20 and part of the flexible printed circuit board pads 40 are connected.

[0038] As described above, a driver chip that integrates gate drive and source drive, with all its key pins independently brought out, does not reserve space for setting data signal test points, making it impossible to obtain data signals. This will affect the driver display debugging and make it impossible to confirm the output enable signal that plays a coordinating role between the data signal and the scan signal.

[0039] To address the aforementioned problems, this utility model provides a display panel and display device that can reserve data signal test points in a limited space to acquire one data signal. Figure 2This is a schematic diagram of the structure of a display panel provided in an embodiment of the present utility model. Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Figure 2 and Figure 3 As shown, the display panel includes a lamp test circuit 30, a data signal test point 50, multiple data signal output pads 110, and multiple data signal transmission lines 60.

[0040] The data signal test point 50 is connected to a data signal output pad 110 or a data signal transmission line 60 through the lamp test circuit 30 to obtain a data signal.

[0041] Before the driver chip is bonded to the display panel, the LED lighting test circuit 30 verifies the load validity (determines whether the light-emitting element is intact), checks the connection reliability (checks for basic connections such as loose connections, short circuits, and reversed polarity in the circuit wiring), confirms driver compatibility (verifies the parameter matching between the power supply, current limiting components, driver chip, and load), and quickly screens for defective products (efficiently distinguishing between qualified and faulty products in a production environment). However, after the driver chip is bonded to the display panel, it is no longer necessary to troubleshoot the display panel using the LED lighting test circuit 30. Therefore, this solution sets up a data signal test point 50 connected to a data signal output pad 110 or a data signal transmission line 60 through the LED lighting test circuit 30 to obtain a data signal, thereby debugging the driver display and confirming the output enable signal that plays a coordinating role between the data signal and the scan signal.

[0042] This embodiment of the utility model, after binding the driver chip to the display panel, reuses the lamp test circuit 30 to connect the data signal test point 50 to a data signal output pad 110 or a data signal transmission line 60, thereby reserving the data signal test point 50 in a limited space, acquiring a data signal, and then confirming the output enable signal that plays a coordinating role between the data signal and the scan signal, thus improving the accuracy of driving display debugging.

[0043] Based on the above embodiments, optionally, Figure 4 This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Figure 4 As shown, the display panel also includes a flexible printed circuit board; the data signal test point 50 is the data signal test pad 41 of the flexible printed circuit board;

[0044] The lighting test circuit 30 includes multiple first test channel control switches K1; the first pole of each first test channel control switch K1 is connected to a data signal output pad 110; and the first pole of any one of the first test channel control switches K1 is connected to a data signal test pad 41.

[0045] Specifically, the data signal test pad 41 of the flexible printed circuit board leads out a data signal through the data signal output pad 110 and the first pole of a first test channel control switch K1. Then, the output enable signal that plays a coordinating role between the data signal and the scan signal is confirmed through the data signal, thereby improving the accuracy of driving display debugging.

[0046] Based on the above embodiments, optionally, Figure 5 This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Figure 5 As shown, the lamp-lighting test circuit 30 includes multiple second test channel control switches K2 and odd-numbered signal input lines D0;

[0047] Data signal test point 50 is the signal input terminal of odd-numbered signal input line D0, which includes a first solder point M1; the first pole of each second test channel control switch K2 is connected to a data signal output pad 110, and the first pole of any second test channel control switch K2 is connected to the first solder point M1.

[0048] Among them, the signal input terminal of the odd-numbered column signal input line D0 leads out a data signal through the data signal output pad 110 and the first pole of the second test channel control switch K2. Then, the output enable signal that plays a coordinating role between the data signal and the scan signal is confirmed through a data signal, thereby improving the accuracy of driving display debugging.

[0049] Based on the above embodiments, optionally, Figure 6 This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Figure 6 As shown, the lighting test circuit 30 includes multiple third test channel control switches K3 and even-numbered column signal input lines DE;

[0050] Data signal test point 50 is the signal input terminal of even-numbered column signal input line DE, which includes a second solder point M2; the first pole of each third test channel control switch K3 is connected to a data signal output pad 110, and the first pole of any third test channel control switch K3 is connected to the second solder point M2.

[0051] Among them, the signal input terminal of the even-numbered column signal input line DE leads out a data signal through the data signal output pad 110 and the first pole of the third test channel control switch K3. Then, the output enable signal that plays a coordinating role between the data signal and the scan signal is confirmed through a data signal, thereby improving the accuracy of driving display debugging.

[0052] Based on the above embodiments, optionally, Figure 7This is a schematic diagram of another display panel provided in an embodiment of the present utility model. Figure 7 As shown, the lamp-lighting test circuit 30 includes a data signal test auxiliary line PM and a common voltage line VCOM; the data signal test auxiliary line PM is connected to the common voltage line VCOM.

[0053] Data signal test point 50 is the signal input terminal of data signal test auxiliary line PM. Data signal test auxiliary line PM includes multiple cutting points CT and multiple third welding points M3.

[0054] The data signal test point 50 is connected to a data signal transmission line 60 through any of the third solder points M3, and at the same time, the connection with the common voltage line VCOM is cut off through the cutting point CT.

[0055] In this configuration, the vertical projection of each data signal transmission line 60 onto the data signal test auxiliary line PM covers a third solder point M3. Adjacent third solder points M3 are not adjacent. The cutting point CT is located between the connection point of the data signal test auxiliary line PM and the common voltage line VCOM and the third solder point M3.

[0056] Before acquiring a data signal through data signal test point 50, a data signal transmission line 60 needs to be connected to the data signal test auxiliary line PM via its corresponding third solder point M3. The connection between the data signal test auxiliary line PM and the common voltage line VCOM is then disconnected via the cutting point CT at the connection point between the signal input end of the data signal test auxiliary line PM and the common voltage line VCOM. This connection is further broken by disconnecting the data signal test line PM and the common voltage line VCOM via any cutting point CT away from the signal input end of the data signal test auxiliary line PM at the third solder point M3 connected to the data signal transmission line 60. Thus, data signal test point 50, connected to a data signal transmission line 60 via a third solder point M3, leads out a data signal. This data signal is then used to confirm the output enable signal that coordinates the data signal and the scan signal, improving the accuracy of the drive display debugging.

[0057] Optionally, based on the above embodiments, the display panel further includes a driver chip, which is connected to each data signal output pad.

[0058] The driver chip is connected to each data signal output pad, which allows data signals to be sent to each data signal transmission line through each data signal output pad.

[0059] This utility model embodiment also provides a display device, which includes a display panel provided in this utility model embodiment. Therefore, it has the beneficial effects of the display panel provided in any embodiment of this utility model, which will not be described in detail here.

[0060] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0061] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A display panel, characterized in that, Includes a lighting test circuit, data signal test points, multiple data signal output pads, and multiple data signal transmission lines; The data signal test point is connected to a data signal output pad or a data signal transmission line through the lamp test circuit to obtain a data signal.

2. The display panel according to claim 1, characterized in that, It also includes flexible printed circuit boards; The data signal test point is the data signal test pad of the flexible printed circuit board; The lighting test circuit includes multiple first test channel control switches; The first pole of each of the first test channel control switches is connected to a data signal output pad; the first pole of any one of the first test channel control switches is connected to the data signal test pad.

3. The display panel according to claim 1, characterized in that, The lighting test circuit includes multiple second test channel control switches and an odd-numbered column of signal input lines; The data signal test point is the signal input end of the odd-numbered column signal input line, and the odd-numbered column signal input line includes a first solder point; The first pole of each of the second test channel control switches is connected to a data signal output pad, and the first pole of any of the second test channel control switches is connected to the first solder point.

4. The display panel according to claim 1, characterized in that, The lighting test circuit includes multiple third test channel control switches and an even-numbered column of signal input lines; The data signal test point is the signal input end of the even-numbered column signal input line, and the even-numbered column signal input line includes a second solder point; The first pole of each of the third test channel control switches is connected to a data signal output pad, and the first pole of any one of the third test channel control switches is connected to the second solder point.

5. The display panel according to claim 1, characterized in that, The lighting test circuit includes a data signal test auxiliary line and a common voltage line; The data signal test auxiliary line is connected to the common voltage line; The data signal test point is the signal input end of the data signal test auxiliary line, and the data signal test auxiliary line includes multiple cutting points and multiple third welding points; The data signal test point is connected to one of the data signal transmission lines through any one of the third welding points, and at the same time, the connection with the common voltage line is cut off through the cutting point.

6. The display panel according to claim 5, characterized in that, The vertical projection of each of the data signal transmission lines onto the data signal test auxiliary line covers one of the third solder joints.

7. The display panel according to claim 5, characterized in that, The adjacent third welding points are not adjacent to each other.

8. The display panel according to claim 5, characterized in that, The cutting point is located between the connection point of the data signal test auxiliary line and the common voltage line and the third soldering point.

9. The display panel according to claim 1, characterized in that, It also includes a driver chip, which is connected to each of the data signal output pads.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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