Display panel

Abstract

The invention relates to a display panel. The driving circuit is arranged in the display area and / or the non-display area; the driving assembly is arranged in the non-display area, and the driving circuit is electrically connected with the driving assembly; the electrostatic protection circuit is arranged in the non-display area; the first signal lines are arranged in the non-display area, the non-display area comprises a signal transmission sub-area, the first ends of the first signal lines are connected to the electrostatic protection circuit, and the second ends of part of the first signal lines are electrically connected to the driving circuit in the signal transmission sub-area. The second ends of part of the first signal lines are electrically connected to the driving assembly in the signal transmission sub-area. The display panel further comprises a switching device connected in the first signal line so as to control on-off of signals in the first signal line, and the switching device is located between the first end of the first signal line and the signal transmission subarea. The signal transmission stability of the first signal lines in the signal transmission sub-areas can be improved, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] To avoid damage to the display panel caused by Electrostatic Discharge (ESD), an ESD protection circuit is usually provided in the display panel. The protection circuit can conduct away the static electricity and reduce the risk of damage to the components in the circuit caused by static electricity.

[0003] Since the display panel will conduct lighting tests and reliability tests and other test experiments during the manufacturing process, and an ESD protection circuit is set on the test line to play a role in static electricity protection.

[0004] However, during the test process, the ESD protection circuit is prone to electrochemical corrosion. For example, in the reliability test, in a high-temperature and high-humidity environment, the ESD protection circuit is prone to electrochemical corrosion, and as the test line extends, it is likely to affect the signal transmission of the subsequent driving circuit or driving component, seriously affecting the display effect of the display panel. Summary of the Invention

[0005] An embodiment of this application provides a display panel, which can block the extension of electrochemical corrosion generated by the static electricity protection circuit, improve the signal transmission stability of the driving circuit and the driving component, and improve the display effect of the display panel.

[0006] An embodiment of this application provides a display panel, the display panel includes a display area and a non-display area adjacent to the display area;

[0007] The display panel further includes:

[0008] A driving circuit, disposed in the display area and / or the non-display area;

[0009] A driving component, disposed in the non-display area, and the driving circuit is electrically connected to the driving component;

[0010] An electrostatic protection circuit, disposed in the non-display area;

[0011] A plurality of first signal lines, disposed in the non-display area. The non-display area includes a signal transmission sub-area. The first end of the first signal line is connected to the electrostatic protection circuit, and the second ends of some of the first signal lines are electrically connected to the driving circuit in the signal transmission sub-area, and the second ends of some of the first signal lines are electrically connected to the driving component in the signal transmission sub-area;

[0012] Among them, the display panel further includes a switching device connected to the first signal line to control the on / off of the signal in the first signal line, and the switching device is located between the first end of the first signal line and the signal transmission sub-region.

[0013] In an embodiment of the present application, the switching device includes a switching thin-film transistor connected to the first signal line. The first signal line includes a first line segment connected between the switching thin-film transistor and the electrostatic protection circuit, and a second line segment connected between the switching thin-film transistor and the signal transmission sub-region.

[0014] Among them, the first line segment and the second line segment are arranged at intervals, and the switching thin-film transistor is located between the first line segment and the second line segment.

[0015] In an embodiment of the present application, the display panel includes:

[0016] A semiconductor layer, including a switching active part of the switching thin-film transistor. The switching active part includes a channel and a first connection part and a second connection part located on opposite sides of the channel.

[0017] A first conductive layer is disposed on one side of the semiconductor layer, and the first conductive layer includes the first signal line.

[0018] Among them, the first line segment is connected to the first connection part, and the second line segment is connected to the second connection part.

[0019] In an embodiment of the present application, the display panel further includes:

[0020] A second conductive layer is disposed on one side of the semiconductor layer. The second conductive layer includes a switching gate of the switching thin-film transistor, and the switching gate overlaps with the channel in the thickness direction of the display panel.

[0021] In an embodiment of the present application, the display panel includes a plurality of the switching thin-film transistors corresponding to and connected to the plurality of the first signal lines. The second conductive layer includes a plurality of the switching gates, and the plurality of the switching gates are connected.

[0022] In an embodiment of the present application, the display panel further includes a second signal line disposed in the non-display area.

[0023] One end of the second signal line is connected to the first signal line in the signal transmission sub-region, and the other end of the second signal line is connected to the driving component.

[0024] In an embodiment of the present application, the display panel further includes a data signal control circuit disposed between the driving component and the display area. The data signal control circuit is electrically connected to the driving circuit, and the second ends of some of the first signal lines are electrically connected to the data signal control circuit in the signal transmission sub-area.

[0025] In an embodiment of the present application, the display panel further includes a third signal line disposed in the non-display area;

[0026] One end of the third signal line is connected to the first signal line in the signal transmission sub-area, and the other end of the third signal line is connected to the data signal control circuit.

[0027] In an embodiment of the present application, the display panel further includes:

[0028] A circuit board binding terminal, disposed in the non-display area. The driving component and the electrostatic protection circuit are on the same side of the display area, and the circuit board binding terminal is on the side away from the display area of both the driving component and the electrostatic protection circuit;

[0029] A first test signal line, one end of the first test signal line is connected to the circuit board binding terminal, and the other end of the first test signal line extends to the edge of the display panel;

[0030] A second test signal line, the second test signal line is connected between the circuit board binding terminal and the electrostatic protection circuit;

[0031] The first signal line is connected to the side of the electrostatic protection circuit away from the second test signal line.

[0032] In an embodiment of the present application, the driving circuit includes a pixel driving circuit disposed in the display area and / or a gate driving circuit disposed in the non-display area;

[0033] Among them, a first part of the multiple first signal lines is electrically connected to the pixel driving circuit, and a second part of the multiple first signal lines is electrically connected to the gate driving circuit and the driving component.

[0034] The present application provides a display panel. By connecting a switching device to a portion of the first signal line located between the electrostatic protection circuit and the signal transmission sub-region, the on / off of the signal on the first signal line can be controlled. Furthermore, the switching device can be turned off when the first signal line has completed signal transmission. For example, when the display panel is undergoing a reliability test, the switching device can be turned off. Even if the electrostatic protection circuit undergoes electrochemical corrosion, by turning off the switching device, the extension of the electrochemical corrosion on the first signal line can be blocked, improving the signal transmission stability of the first signal line within the signal transmission sub-region, enhancing the signal transmission stability of the driving circuit and the driving components, and improving the display effect of the display panel.

[0035] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings 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.

[0037] To more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0038] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0039] Figure 2 Provided by an embodiment of the present application Figure 1 The first enlarged structural diagram at position a in

[0040] Figure 3 Provided by an embodiment of the present application Figure 2 An enlarged structural diagram of a signal transmission sub-region in

[0041] Figure 4 Provided by an embodiment Figure 1 The second enlarged structural diagram at position a in

[0042] Figure 5 Provided by an embodiment Figure 1 The third enlarged structural diagram at position a in

[0043] Figure 6 It is a film stack diagram of an electrostatic protection circuit in a display panel provided by an embodiment of the present application;

[0044] Figure 7A partial enlarged view of an electrostatic protection circuit in a display panel provided in an embodiment of the present application;

[0045] Figure 8 A schematic diagram of a first circuit structure of an electrostatic protection circuit in a display panel provided in an embodiment of the present application;

[0046] Figure 9 A schematic diagram of a second circuit structure of an electrostatic protection circuit in a display panel provided in an embodiment of the present application;

[0047] Figure 10 A third circuit structure schematic diagram of the electrostatic protection circuit in the display panel provided in the embodiment of the present application;

[0048] Figure 11 An embodiment provided Figure 1 Schematic diagram of the fourth enlarged structure at a in the middle;

[0049] Figure 12 A schematic diagram of a structure of a switch thin film transistor in a display panel provided in an embodiment of the present application;

[0050] Figure 13 A schematic diagram of a planar structure of a switch thin film transistor in a display panel provided in an embodiment of the present application.

[0051] Description of reference numerals:

[0052] 101, display area; 102, non-display area; 1021, signal transmission sub-area; 103, edge; 110, first conductive layer; 11, first signal line; 111, first line segment; 112, second line segment; 12, second signal line; 13, third signal line; 141, first transfer part; 142, second transfer part; 143, third transfer part; 15, first routing line; 16, second routing line;

[0053] 21. Driving component; 22. Driving circuit; 221. Pixel driving circuit; 222. Gate driving circuit; 23. Electrostatic protection circuit; 24. Data signal control circuit; 25. Circuit board binding terminal;

[0054] 30. Switching device; 31. Switching thin film transistor; 311. Switching active part; 3111. Channel; 3112. First connecting part; 3113. Second connecting part; 312. Switching gate; 310. Semiconductor layer; 320. Second conductive layer;

[0055] 41, first line; 42, second line; 43, third line; 44, fourth line;

[0056] 51. a first test signal line; 52. a second test signal line;

[0057] 60. Test component; 61. Test terminal. Detailed implementation manners

[0058] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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 in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0059] Please refer to Figure 1 、 Figure 2 and Figure 3 and

[0060] The embodiments of the present application provide a display panel. The display panel includes a display area 101 and a non-display area 102 adjacent to the display area 101; the display panel further includes a driving circuit 22, a driving component 21, an electrostatic protection circuit 23, and a plurality of first signal lines 11.

[0061] The driving circuit 22 is disposed in the display area 101 and / or the non-display area 102; the driving component 21 is disposed in the non-display area 102, and the driving circuit 22 is electrically connected to the driving component 21; the electrostatic protection circuit 23 is disposed in the non-display area 102; the first signal lines 11 are disposed in the non-display area 102. The non-display area 102 includes a signal transmission sub-area 1021. The first end of the first signal line 11 is connected to the electrostatic protection circuit 23, and the second ends of some of the first signal lines 11 are electrically connected to the driving circuit 22 in the signal transmission sub-area 1021, and the second ends of some of the first signal lines 11 are electrically connected to the driving component 21 in the signal transmission sub-area 1021.

[0062] During the implementation and application process, in the embodiments of the present application, a switching device 30 is connected to the portion of the first signal line 11 between the electrostatic protection circuit 23 and the signal transmission sub-area 1021 to control the on / off of the signal on the first signal line 11; furthermore, the switching device 30 can be turned off when the first signal line 11 completes signal transmission. For example, when the display panel is performing a reliability test, the switching device 30 can be turned off; even if the electrostatic protection circuit 23 undergoes electrochemical corrosion, by turning off the switching device 30, the extension of the electrochemical corrosion on the first signal line 11 can be blocked, improving the signal transmission stability of the first signal line 11 in the signal transmission sub-area 1021, improving the signal transmission stability of the driving circuit 22 and the driving component 21, and improving the display effect of the display panel.

[0063] It should be noted that among the partial first signal lines 11 electrically connected to the driving circuit 22 and the partial first signal lines 11 electrically connected to the driving component 21, there may be the same first signal line 11, or different first signal lines 11 may exist simultaneously. Specifically, it can be set according to the signals transmitted in the first signal lines 11. For example, when the signals transmitted to the driving circuit 22 are the same as those transmitted to the driving component 21, the same first signal line 11 can be used for transmission. Or if the driving circuit 22 has multiple different types of driving circuits and different signal inputs are required, different first signal lines 11 can be used for transmission.

[0064] Specifically, please refer to Figure 1 、 Figure 2 and Figure 3 , the display panel provided by the embodiment of the present application includes a display area 101 and a non-display area 102 adjacent to the display area 101.

[0065] It should be noted that the display panel provided by the embodiment of the present application can be used in various electronic devices, such as mobile phones, tablets, computers, TVs, or wearable devices, etc.

[0066] In some embodiments, the display panel can be used in wearable devices such as watches. As Figure 1 shown, the shape of the display panel is circular, that is, the display area 101 is circular, and the non-display area 102 can be arranged around the display area 101.

[0067] In some embodiments, the display panel further includes a driving circuit 22 disposed in the display area 101 and / or the non-display area 102, a driving component 21 disposed in the non-display area 102, an electrostatic protection circuit 23 disposed in the non-display area 102, and a circuit board binding terminal 25 disposed in the non-display area 102.

[0068] It can be understood that the non-display area 102 includes a binding area on one side of the display area 101, and the above-mentioned driving component 21, electrostatic protection circuit 23, and circuit board binding terminal 25 are all disposed in the binding area.

[0069] In some embodiments, the driving component 21 and the electrostatic protection circuit 23 can be arranged side by side in the non-display area 102 and on the same side of the display area 101, while the circuit board binding terminal 25 is located on the side away from the display area 101 of both the driving component 21 and the electrostatic protection circuit 23. Among them, the driving component 21 can include a driving chip, the circuit board binding terminal 25 can be used for binding connection of a flexible circuit board, and the electrostatic protection circuit 23 can be used to provide electrostatic protection during the testing process of the display panel.

[0070] In some embodiments, the driving circuit 22 may include a pixel driving circuit 221 located in the display area 101 and / or a gate driving circuit 222 located in the non-display area 102; in the embodiments of the present application, the driving circuit 22 includes both the pixel driving circuit 221 located in the display area 101 and the gate driving circuit 222 located in the non-display area 102.

[0071] Among them, the number of pixel driving circuits 221 may be multiple, and they are distributed in an array in the display area 101. The gate driving circuits 222 may be distributed on opposite sides of the display area 101 and are not on the same side as the bonding area; each gate driving circuit 222 may provide a scanning signal for a row of pixel driving circuits 221 in the display area 101.

[0072] Furthermore, the driving component 21 and the flexible printed circuit board (not shown in the figure) bonded to the circuit board bonding terminal 25 may provide signals for the driving circuit 22 to implement the display function of the display panel.

[0073] In some embodiments, the circuit board bonding terminal 25 is connected to the driving component 21, and the driving component 21 is connected to the driving circuit 22 through the first trace 15, for example, it may be connected to the pixel driving circuit 221 to provide a data signal.

[0074] The driving component 21 may also be connected to the first signal line 11 through the second signal line 12, and then further connected to the second trace 16, and connected to the driving circuit 22 through the second trace 16, for example, it may be connected to the gate driving circuit 222 to provide a constant voltage signal, a timing control signal, a reset signal, etc.

[0075] In the embodiments of the present application, the display panel may also be subjected to verification such as lighting tests and reliability tests during the manufacturing process to test the reliability and yield of the display panel.

[0076] As Figure 2 and Figure 3 shown, the display panel further includes a first test signal line 51 and a second test signal line 52. One end of the first test signal line 51 is connected to the circuit board bonding terminal 25, and the other end of the first test signal line 51 extends to the edge 103 of the display panel; the second test signal line 52 is connected between the circuit board bonding terminal 25 and the electrostatic protection circuit 23.

[0077] It can be understood that Figure 2Also shown is a test component 60, and test terminals 61 in the test component 60 are connected to the circuit board bonding terminals 25 through first test signal lines 51 to input test signals. However, after the display panel is tested, it is necessary to cut along the edge 103 of the display panel to remove the test component 60 and remove the part of the first test signal line 51 outside the edge 103. Further, one end of the remaining first test signal line 51 is connected to the circuit board bonding terminal 25, and the other end of the first test signal line 51 extends to the edge 103 of the display panel.

[0078] It should be noted that during the lighting test of the display panel, neither the driving component 21 nor the flexible circuit board is bonded. Therefore, the signals required by the driving circuit 22 during the lighting test can be input by the test component 60.

[0079] In some embodiments, the display panel further includes a plurality of first signal lines 11 disposed in the non-display area 102. The first signal lines 11 are connected to a side of the electrostatic protection circuit 23 away from the second test signal line 52, and the first signal lines 11 are used to transmit the signals input by the test component 60 to the driving circuit 22.

[0080] Further, the non-display area 102 may include a signal transmission sub-area 1021, and the plurality of first signal lines 11 may be divided into multiple lines in the signal transmission sub-area 1021 to input signals into different circuits or components.

[0081] In some embodiments, the first end of the first signal line 11 is connected to the electrostatic protection circuit 23, and the second ends of some of the first signal lines 11 are electrically connected to the driving circuit 22 along the first line 41 in the signal transmission sub-area 1021, and the second ends of some of the first signal lines 11 are electrically connected to the driving component 21 along the second line 42 in the signal transmission sub-area 1021.

[0082] It should be noted that different signals can be transmitted in the plurality of first signal lines 11. For example, some of the first signal lines 11 can be used to transmit data signals, and some of the first signal lines 11 can be used to transmit the signals required by the gate driving circuit 222.

[0083] Specifically, the display panel further includes second signal lines 12 disposed in the non-display area 102. In the first line 41, the first signal line 11 passes through the signal transmission sub-area 1021 and is electrically connected to the driving circuit 22. For example, the first signal line 11 passes through the signal transmission sub-area 1021 and is connected to the second trace 16, and can be electrically connected to the gate driving circuit 222 through the second trace 16. In the second line 42, the first signal line 11 is connected to the second signal line 12 in the signal transmission sub-area 1021, and the second signal line 12 is connected between the first signal line 11 and the driving component 21.

[0084] Among them, the first signal line 11 electrically connected to the gate driving circuit 222 along the first line 41 and the first signal line 11 electrically connected to the driving component 21 along the second line 42 can be the same first signal line 11.

[0085] In some embodiments, the display panel further includes a data signal control circuit 24 disposed between the driving component 21 and the display area 101. The data signal control circuit 24 is electrically connected to the driving circuit 22, and specifically can be connected to the pixel driving circuit 221; the second ends of some of the plurality of first signal lines 11 are electrically connected to the data signal control circuit 24 along the third line 43 within the signal transmission sub-region 1021.

[0086] Among them, the display panel further includes a third signal line 13 disposed within the non-display area 102; in the third line 43, the first signal line 11 is connected to the third signal line 13 within the signal transmission sub-region 1021, and the third signal line 13 is connected between the first signal line 11 and the data signal control circuit 24.

[0087] In some embodiments, the display panel may further include a fourth line 44, and in the fourth line 44, the first trace 15 passes through the data signal control circuit 24 and is connected between the driving circuit 22 and the driving component 21, and the first trace 15 can be electrically connected to the pixel driving circuit 221.

[0088] Continuing from the above, the plurality of first signal lines 11 can be respectively used to transmit data signals or signals required by the gate driving circuit 222; therefore, the first part of the plurality of first signal lines 11 is electrically connected to the pixel driving circuit 221 and the data signal control circuit 24, and the second part of the plurality of first signal lines 11 is electrically connected to the gate driving circuit 222 and the driving component 21; that is to say, the first signal lines 11 connected to the pixel driving circuit 221 and the first signal lines 11 connected to the data signal control circuit 24 can be the same part of the first signal lines 11, and the first signal lines 11 connected to the gate driving circuit 222 and the first signal lines 11 connected to the driving component 21 can be the same part of the first signal lines 11; and the first part of the first signal lines 11 and the second part of the first signal lines 11 are different multiple first signal lines 11.

[0089] Next, in conjunction with Figures 4 to 11 , the signal transmission of the display panel provided by the embodiments of the present application during the lighting test and the reliability test will be described.

[0090] As Figure 4As shown, when the display panel is performing a lighting test, the driving component 21 and the flexible circuit board in the display panel have not been bound yet, and within the area where the driving component 21 is located, signals can be transmitted through the binding terminals of the driving component 21.

[0091] Among them, the signal can be transmitted from the test component 60 to the first test signal line 51 through the test terminal 61, and then through the circuit board binding terminal 25 and the second test signal line 52 to the electrostatic protection circuit 23, and is transmitted to point A through the first signal line 11 in the electrostatic protection circuit 23; among them, the signal can be transmitted from point A to the driving circuit 22 through the first line 41, such as the gate driving circuit 222; in addition, the signal can also be transmitted from point A to the driving circuit 22 through the third line 43, such as in the pixel driving circuit 221; to realize the input of signals to the driving circuit 22 and light up the display panel.

[0092] As Figure 5 shown, when the display panel is performing a reliability test, the driving component 21 and the flexible circuit board in the test display panel have been bound, and thus signals can be input through the driving component 21 and the flexible circuit board.

[0093] Among them, the signal is connected from the driving component 21 to the first line 41 through the second signal line 12, and is connected to the driving circuit 22 through the first line 41, such as the gate driving circuit 222; in addition, the signal can be transmitted to the driving circuit 22 through the fourth line 44, such as the pixel driving circuit 221.

[0094] However, during the reliability test of the display panel, it will be in a high-temperature and high-humidity environment, and the electrostatic protection circuit 23 is prone to electrochemical corrosion in a high-temperature and high-humidity environment.

[0095] Specifically, please refer to Figure 5 and Figures 6 to 10 , the electrostatic protection circuit 23 includes a first transistor T1 and a second transistor T2; among them, the input ends of the first transistor T1 and the second transistor T2 are both connected to INPUT, the output end of the first transistor T1 is connected to the low-potential signal line VGL, the output end of the second transistor T2 is connected to the high-potential signal line VGH, the gate of the first transistor T1 is connected to INPUT, and the gate of the second transistor T2 is connected to the high-potential signal line VGH; INPUT is connected to the first signal line 11.

[0096] It should be noted that the signal in the first signal line 11 can be an alternating current signal, and the alternating current signal alternates between a low level and a high level. For example, the first signal line 11 can be a scan signal, a clock signal, an electroluminescent signal (EM), etc.

[0097] like Figure 5 , Figure 6 and Figure 7 The first signal line 11 is connected to the first gate T1G of the first transistor T1 through the first switching portion 141, and the first active portion T1A of the first transistor T1 is located on one side of the first gate T1G. The first signal line 11 and the low potential signal line VGL are respectively connected to the input end and the output end of the first transistor T1, wherein the high potential signal line VGH can be connected to the output end of the first transistor T1 through the third switching portion 143.

[0098] Similarly, the first signal line 11 is connected to the second gate T2G of the first transistor T1 through the second adapter 142, and the second active part T2A of the second transistor T2 is located on one side of the second gate T2G. The first signal line 11 and the high potential signal line VGH are respectively connected to the input and output ends of the second transistor T2.

[0099] Among them, Figure 8 As shown, when no electrostatic discharge occurs, the first transistor T1 and the second transistor T2 are in the off state, that is, the first transistor T1 and the second transistor T2 are not turned on. At this time, the first transistor T1 and the second transistor T2 do not affect the signal transmission of the first signal line 11 (ie, INPUT).

[0100] like Figure 9 and Figure 10 As shown, when electrostatic discharge occurs, the gate voltage of the first transistor T1 and the second transistor T2 is controlled to turn on the first transistor T1 or the second transistor T2, so that the first signal line 11 can introduce static electricity to one of the low potential signal line VGL or the high potential signal line VGH.

[0101] It should be noted that the first adapter part 141 is connected to the first signal line 11, and thus the first adapter part 141 and the first signal line 11 are at the same potential, and thus the potential on the first adapter part 141 will also fluctuate; since the first adapter part 141 is close to the third adapter part 143, and the two belong to the same film layer, and the film layer material contains Al; thus a fluctuating electric field will be generated between the first adapter part 141 and the third adapter part 143; when the display panel is in a high temperature and high humidity environment, the first adapter part 141 is prone to electrochemical corrosion, and the corroded part of the first adapter part 141 will expand, resulting in peeling of the film layer, allowing water and oxygen to invade the interior of the display panel.

[0102] The first signal line 11 is located near the first transfer portion 141 , and the material of the first signal line 11 also contains Al, which will also cause corrosion due to the intrusion of water and oxygen, and the corrosion will be transmitted along the extension path of the first signal line 11 .

[0103] As shown Figure 11 in the figure, corrosion will be transmitted along the extension path of the first signal line 11 to point B, causing abnormal phenomena such as disconnection of the line; furthermore, the signal transmission lines in the display panel will all be affected, resulting in signal transmission failure or unstable transmission.

[0104] Therefore, in the embodiment of the present application, the display panel further includes a switching device 30 connected to the first signal line 11 to control the on / off of the signal in the first signal line 11, and the switching device 30 is located between the first end and the signal transmission sub-region 1021. In the embodiment of the present application, by connecting the switching device 30 to the part of the first signal line 11 between the electrostatic protection circuit 23 and the signal transmission sub-region 1021, the on / off of the signal on the first signal line 11 is controlled; furthermore, the switching device 30 can be turned off when the first signal line 11 completes signal transmission. For example, when the display panel is performing a reliability test, the switching device 30 can be turned off; even if the electrostatic protection circuit 23 undergoes electrochemical corrosion, by turning off the switching device 30, the extension of the electrochemical corrosion on the first signal line 11 can be blocked, improving the signal transmission stability of the first signal line 11 within the signal transmission sub-region 1021, improving the signal transmission stability of the driving circuit 22 and the driving component 21, and improving the display effect of the display panel.

[0105] It should be noted that the switching device 30 is connected to the first signal line 11 and is located between the first signal line 11 and the signal transmission sub-region 1021; when the display panel is performing a lighting test, the switching device 30 can be turned on, and after the display panel completes the lighting test and is about to perform a reliability test, the switching device 30 can be turned off. Furthermore, during the reliability test, the corrosion in the first signal line 11 is blocked when it reaches the switching device 30, preventing the corrosion from spreading along the first signal line 11.

[0106] Please refer to Figure 2 and Figure 12 as well as Figure 13 . The switching device 30 includes a switching thin-film transistor 31 connected to the first signal line 11. The first signal line 11 includes a first line segment 111 connected between the switching thin-film transistor 31 and the electrostatic protection circuit 23 and a second line segment 112 connected between the switching thin-film transistor 31 and the signal transmission sub-region 1021; wherein, the first line segment 111 and the second line segment 112 are arranged at intervals, and the switching thin-film transistor 31 is located between the first line segment 111 and the second line segment 112.

[0107] Specifically, the first line segment 111 can be connected to the source electrode of the switching thin-film transistor 31 or reused as the source electrode of the switching thin-film transistor 31; the second line segment 112 can be connected to the drain electrode of the switching thin-film transistor 31 or reused as the drain electrode of the switching thin-film transistor 31.

[0108] In some embodiments, the display panel includes a substrate 71, a semiconductor layer 310 disposed on the substrate 71, a gate insulating layer 72 disposed on the semiconductor layer 310, a second conductive layer 320 disposed on the gate insulating layer 72, an interlayer insulating layer 73 disposed on the second conductive layer 320, and a first conductive layer 110 disposed on the interlayer insulating layer 73.

[0109] Wherein, the semiconductor layer 310 includes a switching active portion 311 of the switching thin film transistor 31, and the switching active portion 311 includes a channel 3111 and a first connection portion 3112 and a second connection portion 3113 located on opposite sides of the channel 3111.

[0110] The second conductive layer 320 includes a switching gate 312 of the switching thin film transistor 31, and the switching gate 312 overlaps with the channel 3111 in the thickness direction of the display panel.

[0111] The first conductive layer 110 includes a first signal line 11; wherein, a first line segment 111 is connected to the first connection portion 3112, and a second line segment 112 is connected to the second connection portion 3113; and the portion where the first line segment 111 is connected to the first connection portion 3112 is multiplexed as the source electrode of the switching thin film transistor 31, and the portion where the second line segment 112 is connected to the second connection portion 3113 is multiplexed as the drain electrode of the switching thin film transistor 31.

[0112] It can be understood that the first signal line 11 is interrupted at the switching thin film transistor 31 and then switched to the semiconductor layer 310, thereby playing a role in blocking the corrosion transmission; and the switching active portion 311 in the semiconductor layer 310 has a channel 3111 with semiconductor characteristics, thereby further enhancing the role of blocking the corrosion transmission.

[0113] In some embodiments, the display panel may further include a third conductive layer and at least one insulating layer disposed between the first conductive layer 110 and the second conductive layer 320; wherein, the first conductive layer 110 may further include a second trace 16, and the second conductive layer 320 may further include a first test signal line 51, a second signal line 12, a first trace 15, and a second trace 16; the third conductive layer may include a second test signal line 52 and a connection line between the circuit board bonding terminal 25 and the driving component 21 and the second trace 16.

[0114] It can be understood that only examples of the feasible positions of the respective signal lines are given in the above embodiments of the present application, but it is not limited thereto, and the film layer positions of the respective signal lines can be selected according to actual needs and are not limited herein.

[0115] In some embodiments, the first conductive layer 110 includes a plurality of first signal lines 11, the display panel includes a plurality of switching thin film transistors 31 correspondingly connected to the plurality of first signal lines 11, the second conductive layer 320 includes a plurality of switching gates 312, and the plurality of switching gates 312 are connected to each other.

[0116] As Figure 2 and Figure 13 shown, the plurality of switching gates 312 can be integrally formed and connected into a gate line, and the gate line can be connected to the circuit board bonding terminal 25, and then connected to the test terminal 61 through the circuit board bonding terminal 25. Furthermore, signals can be input to the switching gates 312 through the test terminal 61 to control the on / off of the switching thin film transistors 31.

[0117] In some embodiments, since the gate line is connected to the circuit board bonding terminal 25, after the flexible circuit board is subsequently bonded, signals can also be input through the flexible circuit board to perform the function of controlling the on / off of the switching thin film transistors 31.

[0118] It should be noted that after the lighting test of the switching thin film transistors 31 is completed, they can always be in the off state.

[0119] In summary, in the embodiments of the present application, by connecting the switching device 30 to the part of the first signal line 11 between the electrostatic protection circuit 23 and the signal transmission sub-region 1021 to control the on / off of the signal on the first signal line 11; furthermore, the switching device 30 can be turned off when the first signal line 11 completes signal transmission. For example, when the display panel is performing a reliability test, the switching device 30 can be turned off; even if the electrostatic protection circuit 23 undergoes electrochemical corrosion, by turning off the switching device 30, the extension of the electrochemical corrosion on the first signal line 11 can be blocked, improving the signal transmission stability of the first signal line 11 in the signal transmission sub-region 1021, improving the signal transmission stability of the driving circuit 22 and the driving component 21, and improving the display effect of the display panel.

[0120] The embodiments of the present application further provide a display device, and the display device includes the display panel as described in the above embodiments.

[0121] It can be understood that since the display device has the same display panel as in the above embodiments, therefore, the display device can have the same beneficial effects as the display panel, and will not be elaborated herein.

[0122] In some embodiments, the display device can be in various electronic devices, such as mobile phones, tablets, computers, televisions, or wearable devices, etc.; for example, the display device can be a wearable device such as a watch.

[0123] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0124] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0125] Among the embodiments, implementation manners and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0126] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area adjacent to the display area; The display panel further includes: a driving circuit disposed in the display area and / or the non-display area; a driving component disposed in the non-display area, and the driving circuit is electrically connected to the driving component; an electrostatic protection circuit disposed in the non-display area; a plurality of first signal lines disposed in the non-display area, the non-display area includes a signal transmission sub-area, a first end of the first signal line is connected to the electrostatic protection circuit, and a second end of some of the first signal lines is electrically connected to the driving circuit in the signal transmission sub-area, and a second end of some of the first signal lines is electrically connected to the driving component in the signal transmission sub-area; Wherein, the display panel further includes a switching device connected to the first signal line to control the on / off of the signal in the first signal line, and the switching device is located between the first end of the first signal line and the signal transmission sub-area.

2. The display panel according to claim 1, characterized in that, The switching device includes a switching thin film transistor connected to the first signal line, and the first signal line includes a first line segment connected between the switching thin film transistor and the electrostatic protection circuit and a second line segment connected between the switching thin film transistor and the signal transmission sub-area; Wherein, the first line segment and the second line segment are arranged at intervals, and the switching thin film transistor is located between the first line segment and the second line segment.

3. The display panel according to claim 2, wherein The display panel includes: a semiconductor layer including a switching active portion of the switching thin film transistor, the switching active portion includes a channel and a first connection portion and a second connection portion located on opposite sides of the channel; a first conductive layer disposed on one side of the semiconductor layer, and the first conductive layer includes the first signal line; Wherein, the first line segment is connected to the first connection portion, and the second line segment is connected to the second connection portion.

4. The display panel according to claim 3, wherein, The display panel further includes: a second conductive layer disposed on one side of the semiconductor layer, the second conductive layer includes a switching gate of the switching thin film transistor, and the switching gate overlaps with the channel in the thickness direction of the display panel.

5. The display panel according to claim 4, wherein The display panel includes a plurality of the switching thin film transistors corresponding to and connected to the plurality of first signal lines, the second conductive layer includes a plurality of the switching gates, and the plurality of switching gates are connected.

6. The display panel according to any one of claims 1 to 5, characterized in that, The display panel further includes a second signal line disposed in the non-display area; One end of the second signal line is connected to the first signal line in the signal transmission sub-area, and the other end of the second signal line is connected to the driving component.

7. The display panel according to any one of claims 1 to 5, characterized in that, The display panel further includes a data signal control circuit disposed between the driving component and the display area, the data signal control circuit is electrically connected to the driving circuit, and a second end of some of the first signal lines is electrically connected to the data signal control circuit in the signal transmission sub-area.

8. The display panel according to claim 7, wherein, The display panel further includes a third signal line disposed in the non-display area; One end of the third signal line is connected to the first signal line within the signal transmission sub-region, and the other end of the third signal line is connected to the data signal control circuit.

9. The display panel according to any one of claims 1 to 5, characterized in that The display panel further includes: A circuit board bonding terminal, disposed within the non-display region. The driving component and the electrostatic protection circuit are located on the same side of the display region, and the circuit board bonding terminal is located on the side away from the display region where both the driving component and the electrostatic protection circuit are located; A first test signal line, one end of the first test signal line is connected to the circuit board bonding terminal, and the other end of the first test signal line extends to the edge of the display panel; A second test signal line, the second test signal line is connected between the circuit board bonding terminal and the electrostatic protection circuit; The first signal line is connected to the side of the electrostatic protection circuit away from the second test signal line.

10. The display panel according to any one of claims 1 to 5, characterized in that, The driving circuit includes a pixel driving circuit disposed within the display region and / or a gate driving circuit disposed within the non-display region; Among them, a first portion of the plurality of first signal lines is electrically connected to the pixel driving circuit, and a second portion of the plurality of first signal lines is electrically connected to the gate driving circuit and the driving component.

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