Display panel, display panel testing method and display device

Abstract

An embodiment of the present application discloses a display panel and a display panel testing method. The display device includes a display panel. The display panel includes a substrate, signal lines, a first test module, and a second test module. The signal lines are disposed on the substrate. The signal lines include a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected to first color pixels. The second signal lines are connected to second color pixels. The first test module is disposed on the substrate and is spaced apart from the signal lines. The first test module is connected to the first signal lines and the second signal lines. Since the first test module is connected to the first signal lines and the second signal lines, during array testing, it is not necessary to separately test the first signal lines and the second signal lines. Thus, the number of needles inserted by the array detection device can be reduced, the alignment requirement between the test needles and the display panel can be lowered, and inaccurate array detection can be avoided.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel, a display panel testing method, and a display device. Background Art

[0002] Currently, during the manufacturing process of large-size Active-matrix organic light-emitting diode (AMOLED) panels, corresponding inspection processes are required after the array module process, the light-emitting module (EL) process, and the encapsulation process. Currently, there are two common inspection methods after the array module process:

[0003] The first array testing method is to use a full-contact (Fullcontact) needle-poking contact method for inspection. This inspection method has high accuracy. However, since each signal line requires the needle of the inspection equipment mechanism to be connected, high requirements are imposed on the needle alignment accuracy of the inspection equipment and the mechanism design. Moreover, there is still a high risk of problems such as missed needles. At the same time, in order to meet different panel wirings, the needle design compatibility of the inspection equipment also needs to be designed additionally. The second array testing method is to connect the array test pads located on the display panel to the panel test pads also located on the display panel. The inspection equipment needle does not need to use a full-contact method to detect the defects of the array segment. However, this inspection method still requires designing three needles for R / G / B to correspond to the data signal lines. There are still relatively high requirements for the number of needle alignments of the inspection equipment.

[0004] In the process of researching and practicing the prior art, the inventors of this application found that the common inspection methods have low inspection accuracy. Summary of the Invention

[0005] Embodiments of this application provide a display panel, a display panel testing method, and a display device, which can improve the inspection accuracy.

[0006] Embodiments of this application provide a display panel. The display panel includes first-color pixels and second-color pixels, and the display panel includes:

[0007] A substrate;

[0008] Signal lines, which are disposed on the substrate. The signal lines include a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected to the first-color pixels, and the second signal lines are connected to the second-color pixels;

[0009] The first test module is disposed on the substrate. The first test module includes a first shorting bar and a first pad. One end of the first shorting bar is connected to the first signal line and the second signal line, and the other end of the first shorting bar is connected to the first pad. Wherein, the first test module is used for array testing of the display panel.

[0010] Optionally, in some embodiments of the present application, the display panel further includes third color pixels, the signal lines further include a plurality of third signal lines, the third signal lines are connected to the third color pixels, and the first shorting bar is further connected to the third signal lines.

[0011] Optionally, in some embodiments of the present application, the display panel further includes a control module. The control module is connected to the first signal line, the second signal line, and the third signal line, and the control module controls the on / off of the first signal line, the second signal line, and the third signal line.

[0012] Optionally, in some embodiments of the present application, the control module includes a first thin film transistor, a second thin film transistor, and a third thin film transistor;

[0013] The gate of the first thin film transistor is connected to a first trigger signal, the source and drain of the first thin film transistor are connected to the first signal line, the gate of the second thin film transistor is connected to a second trigger signal, the source and drain of the second thin film transistor are connected to the second signal line, the gate of the third thin film transistor is connected to a third trigger signal, and the source and drain of the third thin film transistor are connected to the third signal line.

[0014] Optionally, in some embodiments of the present application, the display panel further includes a second test module. The second test module is disposed on the substrate and is spaced apart from the first test module. The second test module includes a first color shorting bar, a first color test pad, a second color shorting bar, and a second color test pad. One end of the first color shorting bar is electrically connected to a plurality of the first signal lines, the other end of the first color shorting bar is connected to the first color test pad, one end of the second shorting bar is electrically connected to a plurality of the second signal lines, and the other end of the second color shorting bar is connected to the second color test pad. Wherein, the first test module is disposed on a side of the second test module away from the first color pixels and the second color pixels.

[0015] Optionally, in some embodiments of the present application, the second test module further includes a third color shorting bar and a third color test pad. One end of the third color shorting bar is electrically connected to a plurality of the third signal lines, and the other end of the third color shorting bar is connected to the third color test pad.

[0016] Optionally, in some embodiments of the present application, the first color pixel is a blue pixel, the second color pixel is a red pixel, and the third color pixel is a green pixel;

[0017] or, the first color pixel is a red pixel, the second color pixel is a green pixel, and the third color pixel is a blue pixel;

[0018] or, the first color pixel is a green pixel, the second color pixel is a blue pixel, and the third color pixel is a red pixel.

[0019] Optionally, in some embodiments of the present application, the display panel further includes a third color pixel, the signal line further includes a plurality of third signal lines, the third signal lines are connected to the third color pixel, the first test module further includes a second shorting bar and a second pad, one end of the second shorting bar is connected to the third signal line, and the other end of the second shorting bar is connected to the second pad.

[0020] Correspondingly, an embodiment of the present application further provides a display panel testing method for testing the display panel described in any one of the above, and the display panel testing method includes: performing an array test on the display panel through the array test pads in the first test module.

[0021] Correspondingly, an embodiment of the present application further provides a display device, including a display panel and a packaging structure, the display panel is the display panel described in any one of the above, and the packaging structure is disposed on the display panel.

[0022] An embodiment of the present application discloses a display panel, a display panel testing method, and a display device. The display device includes a display panel. The display panel includes a substrate, signal lines, a first test module, and a second test module. The signal lines are disposed on the substrate. The signal lines include a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected to first color pixels. The second signal lines are connected to second color pixels. The first test module is disposed on the substrate and is spaced apart from the signal lines. The first test module is connected to the first signal lines and the second signal lines. Since the first test module is connected to the first signal lines and the second signal lines, when performing an array test, it is not necessary to separately test the first signal lines and the second signal lines. Thus, the number of needles inserted by the array detection device can be reduced, and the alignment requirement between the test needles and the test module can be lowered, avoiding inaccurate array detection. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is the first schematic structural diagram of the display panel provided by the embodiment of the present application;

[0025] Figure 2 is the second schematic structural diagram of the display panel provided by the embodiment of the present application;

[0026] Figure 3 is the third schematic structural diagram of the display panel provided by the embodiment of the present application;

[0027] Figure 4 is a schematic structural diagram of the display device provided by the embodiment of the present application. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0029] The embodiments of the present application provide a display panel, a display panel testing method, and a display device. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0030] Please refer to Figure 1 , Figure 1It is the first structural schematic diagram of the display panel provided by the embodiments of the present application. The display panel 100 provided by the embodiments of the present application includes a first color pixel 10A and a second color pixel 10B. The display panel 100 includes a substrate 101, signal lines 102, and a first test module 103. The signal lines 102 are disposed on the substrate 101. The signal lines 102 include a plurality of first signal lines 1021 and a plurality of second signal lines 1022. The first signal lines 1021 are connected to the first color pixels 10A. The second signal lines 1022 are connected to the second color pixels 10B. The first test module 103 is disposed on the substrate 101. The first test module 103 includes a first pad P, a first shorting bar 103a, and a first pad P. The first pad P is connected to the first signal lines 1021 and the second signal lines 1022.

[0031] The embodiments of the present application provide a display panel 100. A first test module 103 is disposed on the display panel 100. Since the first test module 103 is connected to the first signal lines 1021 and the second signal lines 1022, when performing an array test (AT), it is not necessary to separately test the first signal lines 1021 and the second signal lines 1022. Thus, the number of needles inserted by the AT detection device can be reduced, and the alignment requirement between the test needles and the test module can be lowered, avoiding inaccurate AT detection.

[0032] For the purpose of achieving compatibility of the detection device and rapid detection, the first pad P connects the respective signal lines. For example, the data lines are connected together on the periphery of the substrate. Such a design enables the AT device to contact a larger test module instead of precisely aligning each trace during detection.

[0033] It can be understood that the signal lines described in the embodiments of the present application can be various signal lines on the display panel 100 that need to be detected, such as data lines or test traces. The present application does not limit the type of the signal lines.

[0034] It should be noted that the first pad P described in the embodiments of the present application is simultaneously connected to the first signal lines 1021 and the second signal lines 1022. Compared with separately connecting the first signal lines 1021 and the second signal lines 1022, some setting space of the first pad P can be saved. Therefore, the size of the first pad P can be increased, and a plurality of first signal lines 1021 and a plurality of second signal lines 1022 can be simultaneously connected to the same first pad P. Or, a connection line is used to connect a plurality of first signal lines 1021, and a connection line is used to connect a plurality of second signal lines 1022. Then, the connection lines are simultaneously connected to the same first pad P.

[0035] The display panel 100 provided by the embodiment of the present application can be a display panel that performs display by mixing two color pixels. For example, the first color pixel is a yellow pixel and the second color pixel is a blue pixel. Another example is that the first color pixel is a purple pixel and the second color pixel is a green pixel. Or, on an RGBW panel, the first color pixel is a white pixel, and the second color pixel is one of a red pixel, a blue pixel, or a green pixel.

[0036] The display panel 100 can also be a display panel that performs display by mixing three color pixels. For example, the first color pixel is a red pixel, the second color pixel is a blue pixel, and the third color pixel is a green pixel.

[0037] Optionally, please refer to Figure 2 . Figure 2 It is the second structural schematic diagram of the display panel provided by the embodiment of the present application. Figure 2 The shown embodiment is different from the embodiment shown in Figure 1 in that the first test module 103 is connected to control two of the signal lines for the three color pixels to emit light. Another first test module 103 can be used to connect and control the other one of the signal lines for the three color pixels to emit light.

[0038] Specifically, the display panel 100 further includes a third color pixel 10C. The signal line 102 further includes a plurality of third signal lines 1023. The third signal lines 1023 are connected to the third color pixel 10C. The first test module 103 further includes a second shorting bar 103b and a second pad D. One end of the second shorting bar 103b is connected to the third signal line 1023. The other end of the second shorting bar 103b is connected to the second pad D.

[0039] Optionally, please continue to refer to Figure 1 . The display panel 100 further includes a third color pixel 10C. The signal line 102 further includes a plurality of third signal lines 1023. The third signal lines 1023 are connected to the third color pixel 10C, and the first test module 103 is connected to at least two of the first signal line 1021, the second signal line 1022, and the third signal line 1023.

[0040] Optionally, the first color pixel 10A is a blue pixel, the second color pixel 10B is a red pixel, and the third color pixel 10C is a green pixel. Or, the first color pixel 10A is a red pixel, the second color pixel 10B is a green pixel, and the third color pixel 10C is a blue pixel. Or, the first color pixel 10A is a green pixel, the second color pixel 10B is a blue pixel, and the third color pixel 10C is a red pixel. The first test module 103 is connected to at least two of the first signal line 1021, the second signal line 1022, and the third signal line 1023, that is, the first test module 103 is connected to at least two of the signal lines for controlling the emission of red, blue, and green pixels.

[0041] For Figure 1 example, the first color pixel 10A is a red pixel, the second color pixel 10B is a green pixel, and the third color pixel 10C is a blue pixel. Correspondingly, as an example, the first signal line 1021 is a red pixel data line DR for controlling the emission intensity of the red pixel, the second signal line 1022 is a green pixel data line DG for controlling the emission intensity of the green pixel, and the third signal line 1023 is a blue pixel data line DB for controlling the emission intensity of the blue pixel.

[0042] In one embodiment, the first test module 103 is connected to the first signal line 1021, the second signal line 1022, and the third signal line 1023. When the display panel 100 is a display panel for mixing three color pixels for display, for example, an RGB type display panel. The first test module 103 is connected to the signal lines for controlling the emission of these three color pixels. This design avoids the disadvantages of high needle detection miss rate and slow detection speed in AT detection. Connecting the signal lines for controlling the emission of RGB pixels to a first test module 103 has the highest detection efficiency. And, this can reduce the number of needles and alignment requirements of the AT detection device, and avoid inaccurate AT detection.

[0043] Optionally, please continue to refer to Figure 1 . The first test module 103 further includes a first shorting bar 103a. One end of the first shorting bar 103a is electrically connected to multiple first signal lines 1021, multiple second signal lines 1022, and multiple third signal lines 1023. The other end of the first shorting bar 103a is connected to the first pad P.

[0044] A shorting bar is used to short - circuit and connect multiple first signal lines 1021, multiple second signal lines 1022, and multiple third signal lines 1023 together respectively. Then, a test signal is input into the thin - film transistor array in the display panel 100 through the shorting bar. After the test is completed, the connection between the shorting bar and each signal line is cut off to facilitate the next - step module assembly. In the embodiment of the present application, a first shorting bar 103a is used to short - circuit and connect multiple first signal lines 1021, multiple second signal lines 1022, and multiple third signal lines 1023, and connect them to a first pad P (AT Pad). Such a design can reduce the alignment requirements for the detection equipment during testing, increase the alignment accuracy rate, and further increase the detection accuracy. Therefore, all the signal lines 102 of the display panel 100 provided by the embodiment of the present application can be tested through a single first pad P, and the detection efficiency is high.

[0045] Optionally, the display panel 100 further includes a second test module 104. The second test module 104 is disposed on the substrate 101 and is spaced apart from both the first test module 103 and the signal lines 102. The second test module 104 includes a first color test module 1041 and a second color test module 1042. The first color test module 1041 is connected to the first signal line 1021. The second color test module 1042 is connected to the second signal line 1022. Among them, the first test module 103 is disposed on a side of the second test module 104 away from the first color pixel 10A and the second color pixel 10B.

[0046] Optionally, as Figure 1 shown, the second test module 104 further includes a third color test module 1043. The third color test module 1043 is connected to the third signal line 1023.

[0047] Optionally, the first color test module 1041 includes a first color shorting bar 104a and a first color test pad R. The second color test module 1042 includes a second color shorting bar 104b and a second color test pad G. The third color test module 1043 includes a third color shorting bar 104c and a third color test pad B.

[0048] It should be noted that Figure 1 in the example, the first color pixel 10A is a red pixel, the second color pixel 10B is a green pixel, and the third color pixel 10C is a blue pixel. Correspondingly, the first color test pad is labeled as R, the second color test pad is labeled as G, and the third color test pad is labeled as B.

[0049] One end of the first color shorting bar 104a is electrically connected to a plurality of first signal lines 1021, and the other end of the first color shorting bar 104a is connected to the first color test pad R. One end of the second color shorting bar 104b is electrically connected to a plurality of second signal lines 1022, and the other end of the second color shorting bar 104b is connected to the second color test pad G. One end of the third color shorting bar 104c is electrically connected to a plurality of third signal lines 1023, and the other end of the third color shorting bar 104c is connected to the third color test pad B.

[0050] During the product production process, in order to improve the product yield, the liquid crystal display panel needs to perform AT after the array substrate is completed, and panel testing (Cell Test, CT) after the cell process. Based on this, as shown in Figure 1 During the production process of the display panel 100, before the cutting process is performed, at this time, the display panels 100 are arranged in an array. Each display panel 100 not only has a first pad P and a first shorting bar 103a for AT on its external side, but also has a first color test pad R, a second color test pad G, a third color test pad B for CT and corresponding first color shorting bar 104a, second color shorting bar 104b, and third color shorting bar 104c in its own non-display area. That is, the first test module 103 is disposed on a side of the second test module 104 away from the first color pixel 10A and the second color pixel 10B.

[0051] After the AT is completed, the first pad P and the first shorting bar 103a are cut and removed, while the first color test pad R, the second color test pad G, the third color test pad B for CT and the corresponding first color shorting bar 104a, second color shorting bar 104b, and third color shorting bar 104c are located in the non-display area of the display panel 100 and are retained as the internal structure of the display panel 100.

[0052] The first color test pad R, the second color test pad G, the third color test pad B and the corresponding first color shorting bar 104a, second color shorting bar 104b, and third color shorting bar 104c are respectively connected to the first signal line 1021, the second signal line 1022, and the third signal line 1023. Then, in the panel test, the signal lines of different colors can be tested separately.

[0053] In the process, the test pads are made separately in the two processes of AT and CT. The first color test pad R, the second color test pad G, and the third color test pad B are not used during AT to prevent the first color test pad R, the second color test pad G, and the third color test pad B from being damaged during AT, resulting in poor contact or failure of the first color test pad R, the second color test pad G, and the third color test pad B during subsequent CT.

[0054] Optionally, refer to Figure 3 , Figure 3 FIG. Figure 3 is a third structural schematic diagram of the display panel provided by an embodiment of the present application. The display panel 100 further includes a control module 105. The control module 105 is connected to a first signal line 1021, a second signal line 1022, and a third signal line 1023. The control module 105 controls the on / off of the first signal line 1021, the second signal line 1022, and the third signal line 1023.

[0055] It should be noted that, compared with the embodiment shown in Figure 1 , Figure 3 some identical components are omitted in , and only the main differences between the two embodiments are shown.

[0056] To ensure the yield of the display panel 100, it is necessary to immediately light up the screen for detection after the manufacturing process of the light-emitting module is completed, which is called electroluminescence (EL) detection. At this time, the panel has not been cut yet, and each display panel is on the same large glass substrate. The first shorting bar 103a has not been cut off, so each signal line is still connected together. And for EL detection, the monochromatic images of red, blue, and green need to be lit separately to accurately check the red, blue, and green light colors and display defects. Therefore, the display panel 100 provided by the embodiment of the present application adds a control module, and EL detection can be performed before the first shorting bar 103a is cut off. Through the control module 105, the on / off of the first signal line 1021, the second signal line 1022, and the third signal line 1023 is controlled, so as to realize the controllability of the monochromatic colors of red, blue, and green, and at the same time meet the requirements of AT and EL detections.

[0057] Specifically, the control module 105 includes a first thin-film transistor T1, a second thin-film transistor T2, and a third thin-film transistor T3.

[0058] The gate of the first thin-film transistor T1 is connected to a first trigger signal STV_R, and the source and drain of the first thin-film transistor T1 are connected to the first signal line 1021. The gate of the second thin-film transistor T2 is connected to a second trigger signal STV_G, and the source and drain of the second thin-film transistor T2 are connected to the second signal line 1022. The gate of the third thin-film transistor T3 is connected to a third trigger signal STV_B, and the source and drain of the third thin-film transistor T3 are connected to the third signal line 1023. The trigger signal (STV) can also be called a start signal, a circuit startup signal, etc. In the embodiment of the present application, the STV signal is used to control the on / off of the first signal line 1021, the second signal line 1022, and the third signal line 1023, so as to realize the controllability of the monochromatic colors of red, blue, and green of the display panel 100, and at the same time meet the requirements of AT and EL detections.

[0059] Specifically, the first trigger signal STV R, the second trigger signal STV G, and the third trigger signal STV B are input in time division to turn on the first thin film transistor T1, the second thin film transistor T2, and the third thin film transistor T3 respectively, thereby controlling the light emission of the first color pixel 10A, the second color pixel B, and the third color pixel 10C.

[0060] The display panel 100 provided by the embodiment of the present application includes a control module 105. By designing a group of thin film transistor switches at the end of the signal line 102, the signal lines that do not need to be detected can be opened during EL detection to achieve monochromatic lighting of red, blue, and green, so as to complete EL detection. This design avoids the disadvantages of high needle leakage rate and slow detection speed caused by shorting bars in AT detection on the one hand; on the other hand, it can quickly and accurately perform array detection, and at the same time does not affect the EL detection in the later stage of the process, and can realize independent conduction of red, blue, and green signal lines, meeting the two-stage detection requirements at the same time.

[0061] Correspondingly, the embodiment of the present application also provides a display device. Please refer to Figure 4 , Figure 4 FIG. is a schematic structural diagram of a display device provided by an embodiment of the present application. The display device 1000 includes a display panel 100 and a packaging structure 200. The display panel 100 is the display panel 100 described in any one of the above. The packaging structure 200 is disposed on the display panel 100.

[0062] It should be noted that the display device 1000 may further include other devices. The other devices and their assembly are well-known technical means to those skilled in the art and will not be described in detail here.

[0063] The display device 1000 provided by the embodiment of the present application includes a display panel 100. During the manufacturing process of the display panel 100, the display panel 100 includes a substrate, signal lines, a first test module, and a second test module. The signal lines are disposed on the substrate. The signal lines include a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected to the first color pixels. The second signal lines are connected to the second color pixels. The first test module is disposed on the substrate and spaced apart from the signal lines. The first test module is connected to the first signal lines and the second signal lines. Since the first test module is connected to the first signal lines and the second signal lines, during array testing, it is not necessary to separately test the first signal lines and the second signal lines. Therefore, the number of needles inserted by the AT detection device can be reduced, and the alignment requirement between the test needles and the test module can be lowered, avoiding inaccurate AT detection.

[0064] Correspondingly, an embodiment of the present application further provides a display panel testing method for testing the display panel described in any one of the above. The display panel testing method described in the embodiment of the present application specifically includes the steps of: performing an array test on the display panel through the array test pads in the first test module.

[0065] Specifically, during the AT test, the display panel is still on the large board and has not been cut. Detection is performed by using the first pad P in a way of needle contact.

[0066] The display panel testing method further includes the steps of: performing a light emission test on the display panel through the array test pads in the first test module.

[0067] Specifically, after the light emitting layer process is completed, the screen is immediately controlled to light up for an electroluminescence (EL) test. At this time, each display panel is still on a large board and has not been cut. Therefore, all the signal lines are still connected together. By controlling the on / off of the first signal line, the second signal line, and the third signal line 1023 through the control module, the first color pixel, the second color pixel, and the third color pixel can be lit respectively, and the test is performed through the array test pads.

[0068] The display panel testing method further includes the steps of: performing a color test on the display panel through the first color test pad, the second color test pad, and the third color test pad in the second test module.

[0069] When performing the array test, the display panel testing method provided by the embodiment of the present application does not need to separately test the first signal line and the second signal line. Thus, the number of needles of the array detection device can be reduced, the alignment requirement between the test needle and the test module can be lowered, and inaccurate array detection can be avoided. It can also meet the requirement of performing a light emission test using the array test pads through the control module, realizing monochromatic controllability of panel light emission, so that EL detection can be performed before the first test module is cut, ensuring fast and accurate AT detection without affecting subsequent EL detection.

[0070] The above has introduced in detail a display panel, a display panel testing method, and a display device provided by an embodiment of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A display panel, the display panel including a first color pixel and a second color pixel, characterized in that, The display panel includes: a substrate; signal lines, which are disposed on the substrate. The signal lines include a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected to the first color pixels, and the second signal lines are connected to the second color pixels; a first test module, which is disposed on the substrate. The first test module includes a first shorting bar and a first pad. One end of the first shorting bar is connected to the first signal lines and the second signal lines, and the other end of the first shorting bar is connected to the first pad; wherein, the first test module is used for the array test of the display panel; The display panel further includes third color pixels, and the signal lines further include a plurality of third signal lines. The third signal lines are connected to the third color pixels, and the first shorting bar is further connected to the third signal lines; The display panel further includes a control module, which is connected to the first signal lines, the second signal lines, and the third signal lines. The control module controls the on / off of the first signal lines, the second signal lines, and the third signal lines; The display panel further includes a second test module, which is disposed on the substrate and is spaced apart from the first test module. The second test module includes a first color shorting bar, a first color test pad, a second color shorting bar, a second color test pad, a third color shorting bar, and a third color test pad. One end of the first color shorting bar is electrically connected to a plurality of the first signal lines, and the other end of the first color shorting bar is connected to the first color test pad. One end of the second color shorting bar is electrically connected to a plurality of the second signal lines, and the other end of the second color shorting bar is connected to the second color test pad. One end of the third color shorting bar is electrically connected to a plurality of the third signal lines, and the other end of the third color shorting bar is connected to the third color test pad. Wherein, the first test module is disposed on a side of the second test module away from the first color pixels and the second color pixels; The first pad and the first shorting bar are located outside the display panel to be cut and arranged in an array, and the first color test pad, the second color test pad, the third color test pad, and the corresponding first color shorting bar, second color shorting bar, and third color shorting bar are located in the non-display area of the display panel; The control module includes a first thin film transistor, a second thin film transistor, and a third thin film transistor; the gate of the first thin film transistor receives a first trigger signal, the source and drain of the first thin film transistor are connected to the first signal lines, the gate of the second thin film transistor receives a second trigger signal, the source and drain of the second thin film transistor are connected to the second signal lines, the gate of the third thin film transistor receives a third trigger signal, and the source and drain of the third thin film transistor are connected to the third signal lines; Among them, the first trigger signal, the second trigger signal, and the third trigger signal are input in different time periods, and are used to control the light emission of the first color pixel, the second color pixel, and the third color pixel respectively, so as to realize the separate lighting of different color pixels before the first shorting bar is cut off.

2. The display panel according to claim 1, wherein The first color pixel is a blue pixel, the second color pixel is a red pixel, and the third color pixel is a green pixel; Or, the first color pixel is a red pixel, the second color pixel is a green pixel, and the third color pixel is a blue pixel; Or, the first color pixel is a green pixel, the second color pixel is a blue pixel, and the third color pixel is a red pixel.

3. The display panel according to claim 1, characterized in that, The display panel further includes a third color pixel, the signal line further includes a plurality of third signal lines, the third signal lines are connected to the third color pixel, the first test module further includes a second color shorting bar and a second pad, one end of the second color shorting bar is connected to the third signal line, and the other end of the second color shorting bar is connected to the second pad.

4. A display panel testing method, characterized in that, For testing the display panel according to any one of claims 1 to 3, the display panel testing method includes: performing an array test on the display panel through the array test pads in the first test module.

5. A display device, characterized in that, It includes a display panel and a packaging structure, the display panel is the display panel according to any one of claims 1 to 3, and the packaging structure is arranged on the display panel.

Images