Display panel and electronic device

Abstract

The present application discloses a display panel and an electronic device. The display panel includes: a display area and a non-display area, the non-display area is provided with a connection terminal group and a wire group connected to the connection terminal group, the connection terminal group includes a plurality of first connection terminals for accessing drive signals, the wire group includes a plurality of connection wires, one end of the connection wire is connected to the first connection terminal, and the other end of the connection wire extends into the display area; the connection terminal group also includes a plurality of second connection terminals for accessing functional signals, and the plurality of second connection terminals are respectively arranged on both sides of the plurality of first connection terminals; the connection terminal group also includes a first redundant terminal, and the first redundant terminal is arranged between the first connection terminal and the second connection terminal.

Description

Technical Field

[0001] The present application relates to the field of terminal display technology, and in particular to a display panel and an electronic device. Background Art

[0002] Organic Light-Emitting Diode (OLED) is an advanced display that uses self-luminous elements. It has the advantages of rich colors, ultra-thinness and free bending. With the improvement of manufacturing experience and the advancement of manufacturing raw materials, the comprehensive yield and quality reliability of OLED display panel production have also increased year by year. However, basic display problems continue to emerge with the increase in the total use of OLED display panels. Among the existing display problems, vertical line defects are a common display problem that occurs from time to time, especially under the stimulation of aging tests. Summary of the invention

[0003] The present application aims to provide a display panel and an electronic device to solve the problem of vertical line defects generated by existing display panels.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising a display area and a non-display area, wherein the non-display area is provided with a connection terminal group and a wire group connected to the connection terminal group, wherein the connection terminal group comprises a plurality of first connection terminals for receiving drive signals, and the wire group comprises a plurality of connection wires, wherein one end of the connection wire is connected to the first connection terminal, and the other end of the connection wire extends into the display area;

[0005] The connection terminal group further includes a plurality of second connection terminals for accessing functional signals, and the plurality of second connection terminals are respectively arranged on both sides of the plurality of first connection terminals;

[0006] The connection terminal group further includes a first redundant terminal, and the first redundant terminal is arranged between the first connection terminal and the second connection terminal.

[0007] In a second aspect, an embodiment of the present application provides an electronic device, comprising the above-mentioned display panel.

[0008] In the embodiment of the present application, by arranging the second connection terminal on both sides of the first connection terminal and arranging the first redundant terminal between the first connection terminal and the second connection terminal, the first connection terminal can be protected by the second connection terminal and the first redundant terminal to prevent the first connection terminal at the edge from being corroded and oxidized by water vapor. When the first connection terminal at the edge is damaged, the first redundant terminal can also replace the damaged first connection terminal to provide an electrical signal, thereby ensuring the normal driving and display of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0010] Figure 1 One of the structural schematic diagrams showing the display panel according to the embodiment of the present application;

[0011] Figure 2 A schematic diagram showing electrochemical migration in an embodiment of the present application;

[0012] Figure 3 A second structural schematic diagram showing a display panel according to an embodiment of the present application;

[0013] Figure 4 A third structural schematic diagram showing a display panel according to an embodiment of the present application;

[0014] Figure 5 A schematic diagram showing the structure of a thin film transistor according to an embodiment of the present application.

[0015] Explanation of the accompanying drawings: 1. display area, 2. non-display area, 21. first connecting terminal, 22. connecting line, 221. first connecting line, 222. second connecting line, 23. second connecting terminal, 24. first redundant terminal, 241. first protection terminal, 242. first isolation terminal, 25. first switching element, 26. second switching element, 27. second redundant terminal, 271. second protection terminal, 272. second isolation terminal, 28. third switching element, 29. fourth switching element. DETAILED DESCRIPTION

[0016] Embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations of the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0017] The features of the terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The display panel of the embodiment of the present application is described below.

[0021] like Figure 1 and Figure 3 As shown, the display panel provided by the present application includes a display area 1 and a non-display area 2, wherein the non-display area 2 is provided with a connection terminal group and a wire group connected to the connection terminal group, wherein the connection terminal group includes a plurality of first connection terminals 21 for receiving drive signals, and the wire group includes a plurality of connection wires 22, wherein one end of the connection wire 22 is connected to the first connection terminal 21, and the other end of the connection wire 22 extends into the display area 1;

[0022] The connection terminal group also includes a plurality of second connection terminals 23 for accessing functional signals, and the plurality of second connection terminals 23 are respectively arranged on both sides of the plurality of first connection terminals 21; the connection terminal group also includes a first redundant terminal 24, and the first redundant terminal 24 is arranged between the first connection terminal 21 and the second connection terminal 23.

[0023] The display area 1 may be as follows Figure 3 The portion AA shown is used to display images. The non-display area 2 is set Figure 1 and Figure 3 The area below the display area 1 shown is used to set connection terminals and connection lines, and the connection lines are connected to the connection terminals.

[0024] The connection terminal group includes a first connection terminal 21, the first connection terminal is used to input a data drive signal, and the connection line 22 connected to the first connection terminal 21 can be a data (Source) line. The connection terminal group also includes a second connection terminal 23, and the second connection terminal 23 is used to access a functional signal different from the first connection terminal 21. For example, the second connection terminal 23 includes a terminal for accessing a power signal or a clock signal required by a scan drive circuit. The second connection terminal 23 may also include an output terminal of a timing drive chip in a display panel.

[0025] Optionally, the second connecting terminal is connected to a timing driving chip or a TCON circuit board.

[0026] Optional, combined Figure 3 A clearance zone is set between the functional line connected to the second connection terminal and the connection line 22, and no wiring is done in the clearance zone, that is, the functional line and the connection line 22 are both located outside the clearance zone. In the arrangement direction of the first connection terminals, the spacing between two adjacent terminals is L, and the width of the clearance zone is greater than 3L.

[0027] That is, since the first redundant terminal isolates the first connecting terminal from the second connecting terminal, the distance between the functional line and the connecting line 22 can also be enlarged to form a clearance area. The setting of the clearance area can effectively prevent the connecting line 22 used to transmit the data driving signal from being corroded by water and oxygen, thereby directly affecting the display effect. The setting of the clearance area can also effectively improve the life of the display panel.

[0028] like Figure 1 As shown, a plurality of first connection terminals 21 are arranged in sequence, and the second connection terminals 23 are arranged on both sides of the first connection terminals 21, that is, at the edge of the chip where the terminals are located. The connection terminal group also includes a first redundant terminal 24, which is arranged between the first connection terminal 21 and the second connection terminal 23 to separate the first connection terminal 21 and the second connection terminal 23. The first redundant terminal 24 can be connected to a redundant trace.

[0029] Since the first connection terminal inputs a data drive signal, the voltage change on it will directly affect the display effect of at least one column of pixels corresponding to the surface. In the embodiment of the present application, by setting the second connection terminal on both sides of the first connection terminal and setting the first redundant terminal between the first connection terminal and the second connection terminal, multiple protection effects can be achieved for the first connection terminal through the second connection terminal and the first redundant terminal, preventing the first connection terminal at the edge from being corroded and oxidized by water vapor and directly affecting the display effect of the display panel, thereby effectively extending the service life of the display panel. When the first connection terminal at the edge is damaged, the first redundant terminal can also replace the damaged first connection terminal to provide an electrical signal, thereby ensuring the normal driving and display of the display panel.

[0030] In this embodiment, the first connection terminal 21 located at the edge and the wire connected thereto can be considered as the "risk wiring" on the display panel, that is, the wires with the highest risk of being corroded and oxidized. The first redundant terminal is arranged outside the first connection terminal at the edge, and the first redundant terminal may include one or more terminals. The first redundant terminal is arranged on the side of the first connection terminal 21 at the edge close to the edge of the display panel, which can prevent the first connection terminal 21 from being corroded and oxidized by water vapor, and protect the first connection terminal 21.

[0031] Optionally, the display panel can be arranged on a substrate, and the substrate is a panel substrate (plastic). On the substrate, a chip is bound and arranged, and the chip can be a COP (Chip On Plastic), that is, the chip is bound to a flexible substrate. The connection terminal group can be arranged on the chip. For the first redundant terminal 24 to which no protection voltage is input, it can be a floating state or grounded (0V) to balance the stress design of the entire chip. The first connection terminal 21 is connected to the connection line on the display panel one by one, that is, a data line (Source) in the display panel is connected to a data output line on the COP, and the first connection terminal 21 is used to provide a data signal for the corresponding data line.

[0032] As an optional embodiment, the first connection terminal 21 is directly connected to the first redundant terminal 24 adjacent to the first connection terminal 21;

[0033] or

[0034] The first connection terminal 21 is connected to the first redundant terminal 24 adjacent to the first connection terminal 21 through a first switch element 25, a first end of the first switch element 25 is connected to a control signal, a second end of the first switch element 25 is connected to the first connection terminal 21, and a third end of the first switch element 25 is connected to the first redundant terminal 24.

[0035] In this embodiment, the first connection terminal 21 may be directly connected to the adjacent first redundant terminal 24, or the first connection terminal 21 may be connected to the adjacent first redundant terminal 24 through the first switch element 25. For example, the first connection terminal 21 may be connected to the first redundant terminal 24 through the first switch element 25. Figure 1 As shown, the first connection terminal 21 is connected to the second end of the first switch element 25 through a connection line, and the third end of the first switch element 25 is connected to the first redundant terminal 24 through a connection line. The first end of the first switch element 25 is connected to a control signal for controlling the disconnection or conduction state of the first switch element 25.

[0036] In this embodiment, the first connecting terminal 21 is directly connected to the first redundant terminal 24. When the first connecting terminal 21 can work normally, the first redundant terminal 24 is arranged on the outside of the first connecting terminal 21 to prevent the first connecting terminal from being corroded by water vapor. When the first connecting terminal 21 is damaged, the first redundant terminal 24 can be used as a connecting terminal to replace the first connecting terminal 21 to continue to output the driving signal, which will not affect the normal operation of the display panel.

[0037] When the first connection terminal 21 is connected to the first redundant terminal 24 through the first switch element 25, the on or off state of the first switch element 25 can be controlled according to the state of the first connection terminal 21. For example, when the first connection terminal 21 is working normally or can work normally but is not used, the first switch element 25 can be controlled to be disconnected, and the first redundant terminal 24 is arranged on the outside of the first connection terminal 21 to prevent the first connection terminal from being corroded by water vapor; when the first connection terminal 21 is damaged, the first switch element 25 can be controlled to be turned on, and the first redundant terminal 24 can replace the damaged first connection terminal 21 to continue to output the driving signal, which will not affect the normal operation of the display panel.

[0038] In this embodiment, because the bump pad is added to drive the same data line, the impedance may be reduced or the load of the data line may be inconsistent, resulting in different display effects. The first switch element 25 is designed in the embodiment of the present application. In the normal working mode, one of the branch connections can be cut off to avoid uneven driving due to differences in line loads. When a vertical line is defective, the first connection terminal 21 corresponding to the abnormal pixel column and the first switch element 25 connected thereto can be controlled to close to switch the drive line, that is, when an impedance abnormality occurs at one end, the problem line connection is cut off by the first switch element 25.

[0039] As an optional embodiment, the first redundant terminal 24 includes a first protection terminal 241, which is arranged adjacent to the first connection terminal 21, and the first protection terminal 241 is electrically connected to the voltage supply element through the second switch element 26; wherein the first end of the second switch element 26 is connected to the control signal, the second end of the second switch element 26 is connected to the first protection terminal 241, and the third end of the second switch element 26 is used to connect to the protection voltage.

[0040] like Figure 1 As shown, the first protection terminal 241 is a first redundant terminal adjacent to the first connection terminal 21, and the first protection terminal 241 may be connected to or not connected to the first connection terminal 21. The first protection terminal 241 is connected to the protection voltage through the second switch element 26. The first end of the second switch element 26 is connected to a control signal for controlling the conduction or closing of the second switch element 26, the second end of the second switch element 26 is connected to the first protection terminal 241, and the third end of the second switch element 26 is electrically connected to the voltage supply element for connecting to the protection voltage.

[0041] Optionally, the connection terminal group further includes a protection signal access terminal, the third end of the second switch element 26 is connected to the protection signal access terminal, and the third end of the second switch element 26 is electrically connected to the voltage supply element through the protection signal access terminal.

[0042] In this embodiment, when the pressure supply element is located outside the panel, the protection signal input terminal is a terminal provided on the panel for electrically connecting to the pressure supply element. The protection signal input terminal may be as follows: Figure 1 The voltage terminal V of the internal lead bonding (ILB) shown in PL or V PR , the voltage terminal V PL or V PRA protection voltage is provided for the first protection terminal 241. It should be noted that the protection signal input terminal may also be other terminals that can provide voltage.

[0043] Optionally, the protection signal input terminal may be as follows Figure 1 The ILB connection terminals shown in V PL Voltage terminal or V PR Voltage terminal. It should be noted that it is not limited to that all first protection terminals 241 are connected to one or more ILB pins through the same circuit design, and one or more application levels can be configured as needed. In particular, a vertical line risk pin (i.e., a first connection terminal 21 corresponding to an abnormal pixel column in a vertical line area) is surrounded by at least one reusable protection terminal and a driving circuit design that can be connected to a protection signal input terminal.

[0044] Alternatively, if Figure 3 As shown, the display panel further includes: a flexible display panel FPC, which is connected to the protection signal input terminal. In this embodiment, the FPC is connected to the protection signal input terminal, and a protection voltage is applied to the periphery of the function pin (Spider line) (i.e., the first protection terminal 241) through the FPC connected to the mainboard, without the need for an additional power supply.

[0045] This embodiment, based on the existing data routing, adds a first protection terminal 241 on one side of the first connection terminal located at the edge, and loads a protection voltage on the first protection terminal 241, so that the voltage difference between the first protection terminal 241 and the adjacent first connection terminal 21 is reduced, thereby reducing the electrochemical migration corrosion caused by the stable electric field formed between the adjacent terminals when corroded by water vapor, thereby protecting the first connection terminal.

[0046] Specifically, the electrochemical migration refers to: in a humid environment, water is electrolyzed into H + (moving toward the cathode) and OH - (Moves toward the anode) and the anode nickel Ni 2+ The electrochemical reaction generates Ni(OH)2, which then decomposes into NiO and H2O. 2+ Arriving at the cathode, it receives electrons and is reduced to Ni, such as Figure 2 As shown in the figure, PNL stands for panel; S1: source line 1; Ni: nickel metal, the main material of conductive particles; anode is the high potential point; cathode is the low potential point; DDIC is the display driver IC; the direction of the electric field is from high to low potential energy. Therefore, when the voltage difference between two adjacent terminals increases, making the electric field strength larger, the speed of electrochemical corrosion will accelerate.

[0047] As an optional embodiment, when a normal driving signal is loaded on the first connecting terminal 21, the second switching element 26 is turned on, and the first protection terminal 241 is connected to the protection voltage through the second switching element 26, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal.

[0048] In this embodiment, when the first connecting terminal 21 can work normally and is in a working state, the second switching element 26 is controlled to be turned on, so that the first protection terminal 241 is connected to the protection voltage, and the voltage difference between the first protection terminal 241 and the first connecting terminal 21 is reduced, thereby forming a protection electric field to avoid the risk of oxidation and corrosion of the first connecting terminal 21 located at the edge.

[0049] Optionally, the ratio of the voltage value of the protection voltage to the voltage value of the drive signal is between one third and three quarters. Further, the ratio of the voltage value of the protection voltage to the voltage value of the drive signal is one half. In this embodiment, the voltage value applied to the first protection terminal 241 is within the highest and lowest voltage range of the module voltage and is adjustable. For example, when the display brightness value (DBV) is equal to 500nit, the voltage loaded on the first connection terminal is 6.8V, then the protection voltage loaded on the first protection terminal 241 adjacent to it should be set to 3.4V, thereby reducing the voltage difference between the adjacent fan-out area wiring, the first connection terminal and the first protection terminal 241, and forming a protective electric field to avoid the risk of oxidation and corrosion of the first connection terminal and the corresponding data wiring connected thereto.

[0050] As an optional embodiment, the first connection terminal 21 is connected to the first protection terminal 241 adjacent to the first connection terminal 21 through the first switch element 25;

[0051] When the first connection terminal 21 is not invalid and a driving signal is loaded on the first connection terminal 21, the first switch element 25 is turned off, the second switch element 26 is turned on, and the first protection terminal 241 is connected to the protection voltage through the second switch element 26, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal;

[0052] When the first connection terminal 21 is not invalid and no driving signal is loaded on the first connection terminal 21 , the first switch element 25 is turned off, the second switch element 26 is turned off, and the first protection terminal 241 is suspended.

[0053] When the first connection terminal 21 fails, the first switch element 25 is turned on, the second switch element 26 is turned off, and the first protection terminal 241 is connected to the first connection terminal 21 .

[0054] In this embodiment, the first protection terminal 241 is connected to the adjacent first connection terminal 21 through the first switch element 25, and the on and off states of the first switch element 25 and the second switch element 26 are controlled according to different working states of the first connection terminal 21. When the first connection terminal 21 can work normally and is loaded with a driving signal (i.e., in a normal working state), the first switch element 25 can be controlled to be disconnected, i.e., the first protection terminal 241 does not need to replace the first connection terminal 21 to work, and the second switch element 26 can be controlled to be turned on, i.e., a protection voltage is input to the first protection terminal 241, so that the voltage difference between the first protection terminal 241 and the adjacent first connection terminal 21 is reduced, forming a protection electric field, and avoiding the risk of oxidation and corrosion of the first connection terminal 21 at the edge.

[0055] When the first connecting terminal 21 can work normally but no driving signal is loaded (i.e., it is not in working state), the first switching element 25 can be controlled to be disconnected, that is, the first protection terminal 241 does not need to replace the first connecting terminal 21 to work; and the second switching element 26 is controlled to be disconnected, that is, no protection voltage is loaded in the second switching element 26. In this case, since the first connecting terminal 21 is not working, the first protection terminal 241 is arranged on one side of the edge of the first connecting terminal 21, which can prevent the first connecting terminal 21 from being corroded by water vapor.

[0056] When the first connecting terminal 21 fails (i.e. is damaged), the first switching element 25 is controlled to be turned on and the second switching element 26 is turned off. At this time, no protection voltage is loaded in the first protection terminal 241, and the failed first connecting terminal 21 can be replaced to continue to output the driving signal, which will not affect the normal operation of the display panel.

[0057] As an optional embodiment, the first redundant terminal 24 further includes a first isolation terminal 242 , the first isolation terminal 242 is disposed adjacent to the second connection terminal 23 , and the first protection terminal 241 is disposed between the first isolation terminal 242 and the first connection terminal 21 .

[0058] In this embodiment, the first redundant terminal 24 includes not only the first protection terminal 241, but also a first isolation terminal 242. The first protection terminal 241 is adjacent to the first connection terminal 21, and the first isolation terminal 242 is adjacent to the second connection terminal 23. Figure 1As shown, the second connecting terminal 23 and the first connecting terminal 21 are separated by the first isolating terminal 242 and the first protective terminal 241. Since the first isolating terminal 242 is arranged on the outer side of the first protective terminal 241, the first protective terminal 241 and the first connecting terminal 21 can be further effectively prevented from being corroded by water vapor, thereby achieving the protection of the first protective terminal 241 and the first connecting terminal 21.

[0059] Optionally, the first connecting terminal 21 is connected to the first isolation terminal 242 via a first switching element 25;

[0060] When the first connection terminal 21 is not invalid and a driving signal is loaded on the first connection terminal 21, the first switch element 25 is turned off, the second switch element 26 is turned on, the first protection terminal 241 is connected to the protection voltage through the second switch element 26, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; the first isolation terminal 242 is disconnected from the first connection terminal 21, and the first isolation terminal 242 is suspended;

[0061] When the first connection terminal 21 is not invalid and no driving signal is loaded on the first connection terminal 21, the first switch element 25 is disconnected, the second switch element 26 is disconnected, the first protection terminal 241 is suspended, and the first isolation terminal 242 is suspended;

[0062] When the first connecting terminal 21 fails, the first switch element 25 is turned on, the second switch element 26 is turned off, and the first isolation terminal 242 is connected to the first connecting terminal 21 .

[0063] In this embodiment, the first connection terminal 21 can be connected to the first isolation terminal 242, and the first protection terminal 241 can be connected to the protection voltage through the second switch element 26. According to the working state of the first connection terminal 21, the first switch element 25 and the second switch element 26 are controlled to be turned on and off. Among them, when the first connection terminal 21 works normally (that is, it is not invalid and the driving signal is loaded), the first switch element 25 is controlled to be turned off, that is, the first isolation terminal 242 is not connected to the first connection terminal 21; and the second switch element 26 is controlled to be turned on, so that the first protection terminal 241 inputs the protection voltage to realize the protection function of the first connection terminal 21. The first isolation terminal 242 is set on the side of the first protection terminal 241 close to the edge, which can protect the first protection terminal 241 from being damaged and ensure the protection function of the first protection terminal 241.

[0064] When the first connection terminal 21 can work normally but is not in working state, the first switch element 25 and the second switch element 26 are controlled to be disconnected, that is, the first isolation terminal 242 is not needed to replace the first connection terminal 21, so the first isolation terminal 242 is disconnected from the first connection terminal 21; since the first connection terminal 21 is not working, the first protection terminal 241 can be free of protection voltage, and can also achieve the protection function for the marginal first connection terminal 21. When the first connection terminal 21 is damaged, the first switch element 25 is controlled to be turned on, and the first isolation terminal 242 is used to replace the first connection terminal 21 to continue working.

[0065] Similarly, the second switch element 26 is controlled to be disconnected or turned on according to whether the data driving voltage is loaded on the first isolation terminal 242 . Since the first protection terminal 241 is arranged adjacent to the first isolation terminal 242 , the first protection terminal 241 can directly provide protection for the first isolation terminal 242 .

[0066] Specifically, when the first isolation terminal 242 that is connected to the first connection terminal 21 via the first switch element 25 replaces the first connection terminal 21 in a working state, that is, when the driving voltage is loaded, the second switch element 26 is turned on. When the first isolation terminal 242 that is connected to the first connection terminal 21 via the first switch element 25 replaces the first connection terminal 21 in a non-working state, that is, when the driving voltage is not loaded, the second switch element 26 is turned off.

[0067] In this embodiment, even if the first connecting terminal 21 fails due to corrosion or damage, resulting in obvious vertical line abnormalities on the display panel, the first isolation terminal can still be used to achieve functional replacement. At the same time, the protection voltage loaded on the first protection terminal can continue to protect the first isolation terminal. This solution can greatly improve the service life of the display panel.

[0068] As an optional embodiment, the display panel includes a first side and a second side that are oppositely arranged, the connection line 22 includes a plurality of first connection lines 221 and a plurality of second connection lines 222, the first connection lines 221 are bent toward the first side, the second connection lines 222 are bent toward the second side, and the connection lines 22 form a fan-shaped wiring area in the non-display area 2;

[0069] The connection terminal group further includes a second redundant terminal 27 , and the second redundant terminal 27 is provided between the first connection terminal 21 connected to the first connection line 221 and the first connection terminal 21 connected to the second connection line 222 .

[0070] In this embodiment, if Figure 1As shown, the display panel can be divided into left and right sides, the connecting line on the left side is called the first connecting line 221, and the connecting line on the right side is called the second connecting line 222. When the connecting line connected to the terminal extends toward the display area, the first connecting line 221 on the left side is bent toward the left side, and the second connecting line 222 on the right side is bent toward the right side, then the first connecting line 221 and the second connecting line 222 form a fan-shaped wiring area.

[0071] Optionally, the terminal further includes a second redundant terminal 27, such as Figure 1 As shown, the second redundant terminal 27 is disposed between the first connecting wire 221 and the first connecting wire 222 corresponding to the first connecting wire 21 , and the function of the second redundant terminal 27 is the same as that of the first redundant terminal 24 , and both can protect the adjacent connecting wires.

[0072] Optional, combined Figure 3 A clearance area is provided between adjacent first connection lines 221 and second connection lines 222, and no wiring is provided in the clearance area, that is, the first connection line 221 and the second connection line 222 are both located outside the clearance area. In the arrangement direction of the first connection terminals, the spacing between two adjacent terminals is L, and the width of the clearance area is greater than 3L.

[0073] That is, since the second redundant terminal isolates the first connection terminal connected to the first connection line 221 from the second connection terminal connected to the second connection line 222, the distance between the first connection line 221 and the second connection line 222 can also be increased to form a clearance area. The setting of the clearance area can effectively prevent the connection line 22 used to transmit the data driving signal from being corroded by water and oxygen, thereby directly affecting the display effect. The setting of the clearance area can also effectively improve the life of the display panel.

[0074] Optionally, the second redundant terminal 27 includes a second protection terminal 271, which is arranged adjacent to the first connection terminal 21, and the first connection terminal 21 is electrically connected to the pressure supply element through a third switch element 28, and the first end of the third switch element 28 is connected to the control signal, and the second end of the third switch element 28 is connected to the second protection terminal 271, and the third end of the third switch element 28 is used to connect to the protection voltage.

[0075] In this embodiment, if Figure 1As shown, a plurality of first connection terminals 21 are arranged side by side, and a second redundant terminal 27 is provided between the plurality of first connection terminals 21. Among the second redundant terminals 27, the terminal adjacent to the first connection terminal 21 serves as the second protection terminal 271, which is used to protect the adjacent first connection terminal 21. Wherein, similar to the first protection terminal 241, the second protection terminal 271 is electrically connected to the pressure supply element through the third switch element 28, and the first end of the third switch element 28 is connected to the control signal for controlling the on or off state of the third switch element 28; the second end of the third switch element 28 is connected to the second protection terminal 271, and the third end is connected to the protection voltage for protecting the first connection terminal 21 adjacent to the second protection terminal 271.

[0076] Optionally, when a normal driving signal is loaded on the first connection terminal 21, the third switch element 28 is turned on, and the second protection terminal 271 is connected to the protection voltage through the third switch element 28, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal. Optionally, the ratio of the voltage value of the protection voltage to the driving signal is between one third and three quarters.

[0077] In this embodiment, similar to the first protection terminal 241, the protection voltage applied to the second protection terminal 271 is within the maximum and minimum voltage range of the module voltage and is adjustable, so that the voltage difference between the second protection terminal 271 and the adjacent first connection terminal 21 is reduced, forming a protection electric field to avoid the risk of oxidation and corrosion of adjacent connection terminals and data lines.

[0078] As an optional embodiment, the first connection terminal 21 is connected to the second protection terminal 271 adjacent to the first connection terminal 21 through a fourth switch element 29;

[0079] When the first connection terminal 21 is not invalid and a driving signal is loaded on the first connection terminal 21, the fourth switch element 29 is turned off, the third switch element 28 is turned on, and the second protection terminal 271 is connected to the protection voltage through the third switch element 28, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal;

[0080] When the first connection terminal 21 is not invalid and no driving signal is loaded on the first connection terminal 21, the third switch element 28 is disconnected, the fourth switch element 29 is disconnected, and the second protection terminal 271 is suspended;

[0081] When the first connection terminal 21 fails, the third switch element 28 is turned off, the fourth switch element 29 is turned on, and the second protection terminal 271 is connected to the first connection terminal 21 .

[0082] In this embodiment, when the first connection terminal 21 works normally, there is no need to use the second protection terminal 271 to replace the first connection terminal 21. It is only necessary to realize the protection function of the second protection terminal 271. The third switch element 28 is turned on and the fourth switch element 29 is turned off, so that the second protection terminal 271 inputs the protection voltage through the third switch element 28, and the voltage difference between the second protection terminal 271 and the first connection terminal 21 is reduced, thereby realizing the protection function of the first connection terminal.

[0083] When the first connection terminal 21 can work normally but is not in a working state, there is no need to use the second protection terminal 271 to replace the first connection terminal 21, and there is no need to connect the second protection terminal 271 to a protection voltage to protect the first connection terminal 21. Since the second protection terminal 271 is arranged at the edge of the first connection terminal 21, the first connection terminal 21 can be protected.

[0084] When the first connecting terminal 21 is damaged, the second protection terminal 271 needs to be used to replace the first connecting terminal 21, that is, a driving signal needs to be input into the second protection terminal 271, and there is no need to input a protection voltage. Therefore, the fourth switching element 29 is turned on and the third switching element 28 is turned off. At this time, the second protection terminal 271 can replace the failed first connecting terminal 21 to continue to output the driving signal, and will not affect the normal operation of the display panel.

[0085] As an optional embodiment, the second redundant terminal 27 further includes a second isolation terminal 272, and the second protection terminal 271 is provided between the second isolation terminal 272 and the first connection terminal 21; and / or

[0086] The second redundant terminal 27 further includes a second isolation terminal 272 . The second isolation terminal 272 is disposed between two adjacent second protection terminals 271 .

[0087] In this embodiment, the second redundant terminal 27 includes not only the second protection terminal 271, but also the second isolation terminal 272. The second isolation terminal 272 is arranged between the second protection terminal 271 and the first connection terminal 21. The second isolation terminal 272 can also be arranged between two adjacent second protection terminals 271. The second isolation terminal 272 can effectively prevent the second protection terminal 271 from being corroded by water vapor, thereby further protecting the first connection terminal 21.

[0088] As an optional embodiment, the first connecting terminal 21 is connected to the second isolation terminal 272 through a third switch element 28;

[0089] When the first connection terminal 21 is not invalid and a driving signal is loaded on the first connection terminal 21, the third switch element 28 is turned on, the fourth switch element 29 is turned off, and the second protection terminal 271 is connected to the protection voltage through the third switch element 28, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; the second isolation terminal 272 is disconnected from the first connection terminal 21, and the second isolation terminal 272 is suspended;

[0090] When the first connection terminal 21 is not invalid and no driving signal is loaded on the first connection terminal 21, the third switch element 28 is disconnected, the fourth switch element 29 is disconnected, the second protection terminal 271 is suspended, and the second isolation terminal 272 is suspended.

[0091] When the first connecting terminal 21 fails, the third switch element 28 is turned off, the fourth switch element 29 is turned on, and the second isolation terminal 272 is connected to the first connecting terminal 21 .

[0092] In this embodiment, the second isolation terminal 272 is connected to the first connection terminal 21 through the fourth switch element 29, and can replace the first connection terminal 21 to continue outputting the driving signal when the first connection terminal 21 fails, thereby ensuring the normal operation of the display panel.

[0093] Among them, when the first connecting terminal 21 is working normally, there is no need to replace the first connecting terminal 21, so the fourth switching element 29 can be controlled to be disconnected, and the third switching element 28 can be controlled to be turned on, so that the second protection terminal 271 is connected to the protection voltage, reducing the voltage difference between the first connecting terminal 21 and the adjacent terminal, thereby realizing the protection of the first connecting terminal 21.

[0094] When the first connecting terminal 21 can work normally but is not in a working state, there is no need to replace the first connecting terminal 21 and there is no need to connect a protection voltage to protect the first connecting terminal 21. Therefore, the fourth switching element 29 and the third switching element 28 are both controlled to be disconnected. Although the second protection terminal 281 does not input a protection voltage, it is located on one side of the edge of the first connecting terminal 21 and can protect the first connecting terminal 21 from being damaged.

[0095] When the first connection terminal 21 is damaged, the fourth switch element 29 is controlled to be turned on, so that the second isolation terminal 272 replaces the first connection terminal 21 to output the driving signal, thereby ensuring the normal operation of the display panel.

[0096] Similarly, the third switch element 28 is controlled to be disconnected or turned on according to whether the data driving voltage is loaded on the second isolation terminal 272 . Since the second protection terminal 271 is adjacent to the second isolation terminal 272 , the second protection terminal 271 can directly provide protection for the second isolation terminal 272 .

[0097] Specifically, when the second isolation terminal 272 that is connected to the first connection terminal 21 through the fourth switch element 29 replaces the first connection terminal 21 in a working state, that is, when the driving voltage is loaded, the third switch element 28 is turned on. When the second isolation terminal 272 that is connected to the first connection terminal 21 through the fourth switch element 29 replaces the first connection terminal 21 in a non-working state, that is, when the driving voltage is not loaded, the third switch element 28 is turned off.

[0098] In this embodiment, even if the first connecting terminal 21 fails due to corrosion or damage, resulting in obvious vertical line abnormalities on the display panel, the second isolation terminal can still be used to replace the function. At the same time, the protection voltage loaded on the second protection terminal can continue to protect the second isolation terminal. This solution can greatly improve the service life of the display panel.

[0099] Optionally, in the embodiment of the present application, at least one of the first redundant terminals 24 is set as a protection terminal of the first connection terminal 21, that is, at least one of the first redundant terminals 24 is electrically connected to a connection line, so that the first connection terminal 21 has at least one protection circuit. Each first connection terminal 21 is respectively connected to a connection line, such as Figure 4As shown, SC1 is a redundant routing of S1, and the terminal connected to SC1 is the first protection terminal 241; SC1440 is a redundant routing of S1440, and the terminal connected to SC1440 is the second protection terminal 271; SC1441 is a redundant routing of S1441, and the terminal connected to SC1441 is the second protection terminal 271; SC2560 is a redundant routing of S2560, and the terminal connected to SC2560 is the first protection terminal 241. S1, S1440, S1441, and S2560 are all edge routings, and the terminals connected to them are all the first connection terminals 21 at the edge. The connection position of the redundant routing is not limited to the COP output end to the data fan-out area. Under normal conditions, the bump output corresponding to the redundant routing SCn (SC1, SC1440, SC1441, SC2560, etc.) can be set to a floating state without affecting the connected data signal drive.

[0100] Optionally, in an embodiment of the present application, at least one redundant terminal is reserved for each edge first connection terminal 21, for example Figure 3 As shown, Figure 3 There are 4 data fan-out areas in total, so there are 5 edge routing lines in total. Corresponding to the first connection terminals 21 of the 8 edges, at least 8 redundant terminals need to be reserved. The 8 redundant routing lines corresponding to the 8 redundant terminals can be placed in the non-continuous routing area of ​​the Source (the left half of the screen is a set of continuous Source to fanout areas, and the right half of the screen is another set of continuous Source to fanout areas). The redundant routing lines are designed on the left and right sides of the data fan-out area. The embodiments of the present application are not limited to using the same principle design for multiple fan-out areas.

[0101] like Figure 3 As shown, different functional areas are usually separated by dummies. For example, the low-temperature polysilicon (LTPS) lines responsible for driving the array substrate row drive (gate on array, GOA) and the emission control signal drive (emmition on array, EOA) are located on the left and right sides, and fanout1 and fanout2 correspond to the left and right half screens respectively, and are usually separated by dummies.

[0102] Optionally, the first switch element 25 and the second switch element 26 are both thin film transistors (TFT). Multiple first switch elements 25 can be independently controlled, multiple second switch elements 26 can be independently controlled, and multiple second switch elements 26 can be connected to the voltage input terminals of VPL and VPR of the ILB. The TFT can be designed by using a metal layer M1 (i.e., Metal 1, Mo / Al / Mo molybdenum aluminum molybdenum) or a metal layer M2 (Metel 2, Ti / Al / Ti, titanium aluminum titanium) corresponding to a mask to pass through the via conductive column 51 (e.g., Figure 5 The via conductive column shown in the figure is connected to the FOP (FPC On Pet, a flexible circuit board on film) pin layer 52, without adding additional masks and without affecting the cost. The thin film transistor includes a substrate 41, a buffer layer 42, a polymer layer 43, a gate insulating layer 44, a flat layer 45, a gate 46, a drain wiring 47, a source wiring 48, a P-type doped layer 49, an N-type doped layer 50, a via conductive column 51 and a FOP pin layer 52.

[0103] In this embodiment, the first switch element 25 and the second switch element 26 are both manufactured using the same process as the TFT in the display panel, without adding a special mask and generating additional costs.

[0104] In the embodiment of the present application, a protection circuit is designed for the connection terminal at the edge, i.e., the risk terminal. A driving signal is applied to the non-functional pin (i.e., the redundant terminal) through IBL. The voltage value is consistent with the Source voltage range (0-6.8V) output by the DDIC. The default value is 3.4V, which can reduce the risk of oxidation of the bump of the single connection terminal (i.e., the first connection terminal at the edge) without adjacent terminals on one side. In addition, when the edge bump is corroded and oxidized by water vapor, the other terminal of the dual-channel design (i.e., one first connection terminal and one corresponding redundant terminal) can continuously provide electrical signal output to ensure the normal driving and display of the panel, thereby greatly reducing the risk of vertical lines on the edge. On the basis of ensuring the function, the working status of the risk terminal can be conveniently detected through the peripheral FPC interface design through the protection control switch.

[0105] In the embodiments of the present application, a protection voltage scheme for special terminals and traces is input through FPC, which is expected to reduce the risk of edge failure by more than 50%; when the ohmic impedance of the edge traces or edge terminals is abnormal, a normal drive signal can be output to reduce the risk of vertical line defects on the panel; the motherboard end can identify the working condition of the panel and whether the signal is abnormal through the output VPL and VPR terminals, and can output corresponding control signals so that when vertical lines appear on the edge of the panel, a redundant design can be enabled to avoid the generation of bright / dark lines on the edge.

[0106] In the embodiment of the present application, by arranging the second connection terminal on both sides of the first connection terminal and arranging the first redundant terminal between the first connection terminal and the second connection terminal, the first connection terminal can be protected by the second connection terminal and the first redundant terminal to prevent the first connection terminal at the edge from being corroded and oxidized by water vapor. When the first connection terminal at the edge is damaged, the first redundant terminal can also replace the damaged first connection terminal to provide an electrical signal, thereby ensuring the normal driving and display of the display panel.

[0107] An embodiment of the present application further provides an electronic device, which includes the display panel.

[0108] The electronic device may be a mobile phone. Those skilled in the art may understand that, in addition to mobile phones as electronic devices, it may also be applicable to other electronic devices with display panels, such as tablet computers, e-book readers, MP3 (Moving Picture Experts Group Audio Layer III) players, MP4 (Moving Picture Experts Group Audio Layer IV) players, laptop computers, car computers, desktop computers, set-top boxes, smart televisions, wearable devices, etc., are all within the protection scope of the embodiments of the present application.

[0109] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0110] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0111] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0112] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications are also within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: It includes a display area and a non-display area, wherein the non-display area is provided with a connection terminal group and a wire group connected to the connection terminal group, wherein the connection terminal group includes a plurality of first connection terminals for receiving drive signals, and the wire group includes a plurality of connection wires, wherein one end of the connection wire is connected to the first connection terminal, and the other end of the connection wire extends into the display area; The connection terminal group further includes a plurality of second connection terminals for accessing functional signals, and the plurality of second connection terminals are respectively arranged on both sides of the plurality of first connection terminals; The connection terminal group further includes a first redundant terminal, wherein the first redundant terminal is arranged between the first connection terminal and the second connection terminal; The first connection terminal is directly connected to the first redundant terminal adjacent to the first connection terminal; or The first connection terminal is connected to the first redundant terminal adjacent to the first connection terminal through a first switch element, a first end of the first switch element is connected to a control signal, a second end of the first switch element is connected to the first connection terminal, and a third end of the first switch element is connected to the first redundant terminal; and / or The first redundant terminal includes a first protection terminal, and the first protection terminal is disposed adjacent to the first connection terminal. The first protection terminal is electrically connected to the voltage supply element through the second switch element; wherein the first end of the second switch element is connected to the control signal, the second end of the second switch element is connected to the first protection terminal, and the third end of the second switch element is used to connect to the protection voltage.

2. The display panel according to claim 1, characterized in that: The connection terminal group further includes a protection signal access terminal, and the third end of the second switch element is connected to the protection signal access terminal.

3. The display panel according to claim 1, characterized in that: When a normal driving signal is loaded on the first connection terminal, the second switching element is turned on, and the first protection terminal is connected to the protection voltage through the second switching element. The absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal.

4. The display panel according to claim 3, characterized in that: The ratio of the voltage value of the protection voltage to the voltage value of the driving signal is between one third and three quarters.

5. The display panel according to claim 1, characterized in that: The first connection terminal is connected to the first protection terminal adjacent to the first connection terminal through a first switch element; When the first connection terminal is not invalid and a driving signal is loaded on the first connection terminal, the first switch element is turned off, the second switch element is turned on, the first protection terminal is connected to the protection voltage through the second switch element, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; When the first connection terminal is not invalid and no driving signal is loaded on the first connection terminal, the first switch element is disconnected, the second switch element is disconnected, and the first protection terminal is suspended; When the first connection terminal fails, the first switch element is turned on, the second switch element is turned off, and the first protection terminal is connected to the first connection terminal.

6. The display panel according to claim 1, characterized in that: The first redundant terminal further includes a first isolation terminal, the first isolation terminal is disposed adjacent to the second connection terminal, and the first protection terminal is disposed between the first isolation terminal and the first connection terminal.

7. The display panel according to claim 6, characterized in that: The first connecting terminal is connected to the first isolation terminal through a first switching element; When the first connection terminal is not invalid and a driving signal is loaded on the first connection terminal, the first switch element is disconnected, the second switch element is turned on, the first protection terminal is connected to the protection voltage through the second switch element, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; the first isolation terminal is disconnected from the first connection terminal, and the first isolation terminal is suspended; When the first connection terminal is not invalid and no driving signal is loaded on the first connection terminal, the first switch element is disconnected, the second switch element is disconnected, the first protection terminal is suspended, and the first isolation terminal is suspended; When the first connecting terminal fails, the first switch element is turned on, and the first isolation terminal is connected to the first connecting terminal.

8. The display panel according to claim 1, characterized in that: The display panel comprises a first side and a second side that are oppositely arranged, the connection lines comprise a plurality of first connection lines and a plurality of second connection lines, the first connection lines are bent toward the first side, the second connection lines are bent toward the second side, and the connection lines form a fan-shaped wiring area in the non-display area; The connection terminal group further includes a second redundant terminal, and the second redundant terminal is provided between the first connection terminal connected to the first connection line and the first connection terminal connected to the second connection line.

9. The display panel according to claim 8, characterized in that: The second redundant terminal includes a second protection terminal, which is arranged adjacent to the first connection terminal. The first connection terminal is electrically connected to the voltage supply element through a third switch element. The first end of the third switch element is connected to a control signal, the second end of the third switch element is connected to the second protection terminal, and the third end of the third switch element is used to connect to a protection voltage.

10. The display panel according to claim 9, characterized in that: When a normal driving signal is loaded on the first connection terminal, the third switching element is turned on, and the second protection terminal is connected to the protection voltage through the third switching element, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal.

11. The display panel according to claim 9, characterized in that: The first connection terminal is connected to the second protection terminal adjacent to the first connection terminal through a fourth switch element; When the first connection terminal is not invalid and a driving signal is loaded on the first connection terminal, the fourth switch element is turned off, the third switch element is turned on, the second protection terminal is connected to the protection voltage through the third switch element, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; When the first connection terminal is not invalid and no driving signal is loaded on the first connection terminal, the third switch element is disconnected, the fourth switch element is disconnected, and the second protection terminal is suspended; When the first connection terminal fails, the third switch element is turned off, the fourth switch element is turned on, and the second protection terminal is connected to the first connection terminal.

12. The display panel according to claim 9, characterized in that: The second redundant terminal further includes a second isolation terminal, and the second protection terminal is arranged between the second isolation terminal and the first connection terminal; and / or The second redundant terminal further includes a second isolation terminal, and the second isolation terminal is provided between two adjacent second protection terminals.

13. The display panel according to claim 12, characterized in that: The first connecting terminal is connected to the second isolation terminal through a fourth switching element; When the first connection terminal is not invalid and a driving signal is loaded on the first connection terminal, the third switch element is turned on, the fourth switch element is turned off, the second protection terminal is connected to the protection voltage through the third switch element, and the absolute value of the voltage difference between the protection voltage and the driving signal is smaller than the absolute value of the voltage value of the driving signal; the second isolation terminal is disconnected from the first connection terminal, and the second isolation terminal is suspended; When the first connection terminal is not invalid and no driving signal is loaded on the first connection terminal, the third switch element is disconnected, the fourth switch element is disconnected, the second protection terminal is suspended, and the second isolation terminal is suspended; When the first connection terminal fails, the fourth switch element is turned on, and the second isolation terminal is connected to the first connection terminal.

14. An electronic device, characterized in that: A display panel comprising any one of claims 1 to 13.

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