Leakage current detection method and device, electronic equipment, storage medium and program product

Abstract

The embodiment of the invention provides a leakage current detection method and device, electronic equipment, a storage medium and a program product. The leakage current detection method comprises the following steps: controlling at least part of driving circuits of a display panel to stop transmitting driving signals to corresponding sub-pixels; at least part of the driving circuits are controlled to supply power to the corresponding sub-pixels according to the reference voltage value, the sub-pixels are connected with the first power supply end of the display panel, and the voltage difference between the reference voltage value and the voltage of the first power supply end of the display panel is smaller than the lightening voltage of the sub-pixels corresponding to the driving circuits; and according to the current received by a current monitoring end of the display panel, a leakage current detection result of the display panel is determined, and the current monitoring end is arranged at the first power supply end. According to the scheme, leakage current detection of the display panel is realized, the yield of the display panel passing product detection is improved, and resource waste of the display panel in the actual application process is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular to a leakage current detection method, device, electronic device, storage medium and program product. Background Art

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the current methods for quality inspection of OLED display products need to be expanded. Summary of the invention

[0004] In view of this, embodiments of the present application provide a leakage current detection method, device, electronic device, storage medium and program product to at least partially solve the above problems.

[0005] According to a first aspect of an embodiment of the present application, a leakage current detection method is provided, comprising: controlling at least part of the driving circuit of a display panel to stop transmitting a driving signal to a corresponding sub-pixel, wherein the driving signal is a signal for driving the corresponding sub-pixel to work normally; controlling at least part of the driving circuit to power the corresponding sub-pixel with a reference voltage value, wherein each of the sub-pixels is connected to a first power supply terminal of the display panel, and a voltage difference between the reference voltage value and a voltage at the first power supply terminal of the display panel is less than a lighting voltage of the sub-pixel corresponding to the driving circuit; determining a leakage current detection result of the display panel according to a current received by a current monitoring terminal of the display panel, wherein the current monitoring terminal is arranged at the first power supply terminal.

[0006] According to a second aspect of an embodiment of the present application, a leakage current detection device is provided, the device comprising: a first control unit, used to control at least part of the driving circuits in the display panel to stop transmitting driving signals to corresponding sub-pixels, wherein the driving signals are signals for driving the corresponding sub-pixels to work normally; a second control unit, used to control at least part of the driving circuits to power the corresponding sub-pixels with a reference voltage value, wherein each of the sub-pixels is connected to a first power supply terminal of the display panel, and a voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is less than a lighting voltage of the sub-pixel corresponding to the driving circuit; and a result determination unit, used to determine a leakage current detection result of the display panel according to a current received by a current monitoring terminal of the display panel, wherein the current monitoring terminal is arranged at the first power supply terminal.

[0007] According to the third aspect of an embodiment of the present application, there is provided an electronic device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform an operation corresponding to the method described in the first aspect.

[0008] According to a fourth aspect of an embodiment of the present application, a computer storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the method described in the first aspect is implemented.

[0009] According to a fifth aspect of an embodiment of the present application, a computer program product is provided, comprising computer instructions, wherein the computer instructions instruct a computing device to perform operations corresponding to the method described in the first aspect.

[0010] According to the solution provided in the embodiment of the present application, at least part of the driving circuits in the display panel can be controlled to stop transmitting driving signals to corresponding sub-pixels, and at least part of the driving circuits can be controlled to power the corresponding sub-pixels with a reference voltage value, and then the leakage current detection result of the display panel can be determined based on the current received by the current monitoring end of the display panel. Therefore, since the voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is smaller than the lighting voltage of the sub-pixel corresponding to the driving circuit, the reference voltage whose voltage value is the reference voltage value is basically insufficient to make the sub-pixel emit light, so that after at least part of the driving circuit supplies power to the corresponding sub-pixel with the reference voltage value, the conductive path in these sub-pixels that is used to be energized under the action of the driving signal to enable the sub-pixel to work normally is basically in an open circuit state, and since the current monitoring terminal is arranged at the first power supply terminal, after at least part of the driving circuit supplies power to the corresponding sub-pixel with the reference voltage value, the current received by the current monitoring terminal of the display panel is basically the sum of the leakage currents generated by the leakage current of these sub-pixels, and further, according to the current received by the current monitoring terminal of the display panel, the leakage current detection result of the display panel can be determined, thereby realizing the leakage current detection of the display panel, improving the yield rate of the display panel that passes the product inspection, and reducing the waste of resources of the display panel in the actual application process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0012] Figure 1 is a schematic diagram of an exemplary structure of a display panel;

[0013] Figure 2 A partial equivalent circuit diagram of a display panel according to an embodiment of the present application;

[0014] Figure 3 A flow chart of a leakage current detection method according to an embodiment of the present application;

[0015] Figure 4 A partial equivalent circuit diagram of a display panel according to another embodiment of the present application;

[0016] Figure 5 A partial equivalent circuit diagram of a display panel according to another embodiment of the present application;

[0017] Figure 6 A schematic diagram of a leakage current detection device according to an embodiment of the present application;

[0018] Figure 7 A schematic block diagram of an electronic device according to an embodiment of the present application.

[0019] Description of reference numerals:

[0020] 1. Substrate; 2. Pixel definition layer; 21. Pixel opening; 3. Isolation structure; 31. Isolation opening; 32. First isolation portion; 33. Second isolation portion; 34. Third isolation portion; 4. Sub-pixel; 41. First electrode; 42. Light-emitting layer; 43. Second electrode; 44. Encapsulation layer. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0022] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in the embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items.

[0023] It should be understood that in the description of the embodiments of the present application, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the schemes of the embodiments of the present application 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 a limitation on the embodiments of the present application.

[0024] In addition, when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, the element or layer may be directly on, directly connected to, or directly coupled to the other element or layer, or intervening elements or layers may be present. However, when an element or layer is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers present.

[0025] The terms first, second, etc. are used to describe various elements, components, regions, layers and / or parts, but these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer and / or part from another element, component, region, layer and / or part.

[0026] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] The specific implementation of the embodiment of the present application is further explained below in conjunction with the accompanying drawings of the embodiment of the present application.

[0028] The corresponding structural parts mentioned below, such as the contents of the isolation structure, are described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217. PCT / CN2024 / 099419, PCT / CN2024 / 099072 , CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A are further described for reference.

[0029] The contents of the circuit parts mentioned below are further described in patents CN118251982A, 202311324257.8, 202310731471.9, 202311686416.9, 202310707183.X, 202310479495.X, 202310445544.8, CN117580403A, CN116669477B, and CN116936581B for reference.

[0030] An embodiment of the present application provides a leakage current detection method, which can be executed by a data center, a server, a personal computer, an Internet of Things (IoT) device, an embedded device, etc. The leakage current detection method is independent of the hardware deployed by the computing device that executes the solution.

[0031] The leakage current detection method is described in detail below through multiple embodiments.

[0032] The leakage current detection method is used to detect the leakage current inside the display panel, and the display panel is used to display static images or dynamic images. For example, the display panel can be a display screen set on the display terminal, and the display screen is electrically connected to the terminal device body included in the display terminal. The above-mentioned display terminal can be implemented in the form of various electronic devices such as mobile phones, tablet computers, PDAs, etc., and the embodiments of the present application are not limited to this.

[0033] In one possible implementation, the display panel includes a substrate; the sub-pixel is located in an isolation opening formed by an isolation structure, and the isolation structure is located on one side of the substrate; the first electrode of the sub-pixel is arranged on the side of the isolation structure facing the substrate, and the first electrode of the sub-pixel is insulated from the isolation structure; the light-emitting layer of the sub-pixel and the second electrode of the sub-pixel are located in the isolation opening, and the second electrode of the sub-pixel is electrically connected to the isolation structure; the light-emitting layer of at least part of the sub-pixel is in contact with the isolation structure; and the isolation structure includes a conductive material.

[0034] Exemplarily, the specific structure of the display panel may be as follows:

[0035] like Figure 1 As shown, the display panel includes a substrate 1, a pixel definition layer 2 (Pixel Definition Layer, PDL), an isolation structure 3 and a sub-pixel 4; the pixel definition layer 2 is arranged on one side of the substrate 1, and a pixel opening 21 is arranged on the pixel definition layer 2; the isolation structure 3 is arranged on the side of the pixel definition layer 2 away from the substrate 1, and the isolation structure 3 encloses an isolation opening 31; part of the structure of the sub-pixel 4 is located in the pixel opening 21, and part of the structure of the sub-pixel 4 is located in the isolation opening 31. In the display panel, part of the sub-pixels 4 are red sub-pixels, part of the sub-pixels 4 are green sub-pixels, and part of the sub-pixels 4 are blue sub-pixels, and each red sub-pixel and a corresponding green sub-pixel and a corresponding blue sub-pixel 4 constitute a corresponding pixel.

[0036] The isolation structure 3 includes a first isolation portion 32 (whose material is, for example, molybdenum (Mo)), a second isolation portion 33 (whose material is, for example, aluminum (Al)) and a third isolation portion 34. The first isolation portion 32 is arranged on a side of the pixel definition layer 2 away from the substrate 1, the second isolation portion 33 is arranged on a side of the first isolation portion 32 away from the pixel definition layer 2, and the third isolation portion 34 is arranged on a side of the second isolation portion 33 away from the first isolation portion 32. The first power supply terminal of the display panel (the first power supply terminal is the port for connecting the negative power supply of the display panel) is connected to the second isolation portion 33.

[0037] The sub-pixel 4 includes a first electrode 41 (Anode), a light-emitting layer 42, a second electrode 43 (Cathode) and an encapsulation layer 44, wherein the first electrode 41 is an anode and the second electrode 43 is a cathode; the first electrode 41 and the pixel definition layer 2 are arranged on the same side of the substrate 1, and the first electrode 41 is located in the pixel opening 21; the light-emitting layer 42 is arranged on the side of the first electrode 41 away from the substrate 1, part of the light-emitting layer 42 is located in the pixel opening 21, and part of the light-emitting layer 42 is located in the isolation opening 31; the second electrode 43 is arranged on the side of the light-emitting layer 42 away from the first electrode 41, the second electrode 43 is located in the isolation opening 31, and the second electrode 43 is connected to the second isolation portion 33; the encapsulation layer 44 is arranged on the side of the second electrode 43 away from the light-emitting layer 42, and at least part of the structure of the encapsulation layer 44 is located in the isolation opening 31.

[0038] A driving circuit corresponding to each sub-pixel 4 is provided in the substrate 1. During the operation of the display panel, the driving circuit is used to provide a driving signal to the corresponding sub-pixel 4 (the driving signal is a signal used to drive the corresponding sub-pixel 4 to work normally, and may be, for example, a current signal or a voltage signal, etc.). Since the first electrode 41 of the sub-pixel 4, the light-emitting layer 42, the second electrode 43, the second isolation portion 33 and the first power supply terminal of the display panel form a conductive path (hereinafter referred to as the first conductive path), after the sub-pixel 4 receives the driving signal, current will flow in the conductive path, and then the light-emitting layer 42 will emit light, and the display panel will display.

[0039] In an actual display panel, due to the limitation of the process precision when manufacturing the display panel, the hole injection layer (HIL) included in the light-emitting layer 42 of at least some sub-pixels 4 will have a contact surface ( Figure 2Two light-emitting layers 42 are shown in the figure, at least a part of the lower light-emitting layer 42 of the two light-emitting layers 42 can be a HIL, which has a contact surface with the first isolation part 32, the lower light-emitting layer 42 of the two light-emitting layers 42 can also include a hole transport layer (HTL), the upper light-emitting layer 42 of the two light-emitting layers 42 can be the same as the lower light-emitting layer 42, or different, and the embodiment of the present application is not limited to this). Therefore, the first electrode 41 of at least some of the sub-pixels 4 in the display panel, the hole injection layer, the first isolation part 32, the second isolation part 33 and the first power supply end of the display panel also form a conductive path (hereinafter referred to as the second conductive path). Therefore, in the actual operation of the display panel, for the driving circuit corresponding to each sub-pixel 4 of the at least some of the sub-pixels 4, after the driving circuit provides a driving signal to the corresponding sub-pixel 4, a part of the current output by the first electrode 41 of the sub-pixel 4 will be transmitted through the first conductive path in the sub-pixel 4, and the other part will be transmitted through the second conductive path in the sub-pixel 4.

[0040] Based on the display panel of the above example, the leakage current situation inside the display panel refers to the situation that at least part of the sub-pixels 4 in the display panel transmit current through the second conductive path.

[0041] It should be noted that the specific structure of the above-mentioned display panel is only an example. The leakage current detection method in the present application can not only be used to detect the leakage current situation inside the display panel of the above-mentioned example, but also can be used to detect the leakage current situation inside at least some display panels of other structures. The leakage current situation inside at least some display panels of other structures is the same as the leakage current situation of the display panel of the above-mentioned example, and the embodiments of the present application will not be repeated here.

[0042] Figure 2 FIG. 1 is a partial equivalent circuit diagram of a display panel according to an embodiment of the present application. Figure 2 As shown, Id is the driving signal, D is the equivalent light-emitting diode of the conductive path composed of the first electrode 41, the light-emitting layer 42 and the second electrode 43 of the sub-pixel 4, Rs-C is the lap impedance of the connection surface (i.e., the contact surface) between the second electrode 43 and the second isolation part 33, Rs-L is the total equivalent resistance of the first electrode 41, the hole injection layer, the first isolation part 32 and the second isolation part 33 of the sub-pixel 4, ELVSS is the first power supply terminal of the display panel, wherein the series branch where D, Rs-C and ELVSS are located is the first conductive path of the sub-pixel 4, the series branch where Rs-L and ELVSS are located is the second conductive path of the sub-pixel 4, and the part of Id flowing through Rs-L is the leakage current of the leakage current.

[0043] from Figure 2It can be seen that when the display panel leaks current, it is equivalent to D being connected in parallel with a small resistor Rs-L. This will cause part of the current to flow through the leakage path when the display panel is low-brightness, resulting in poor picture quality when the display panel is low-brightness. Currently, there is no convenient and fast path to monitor this adverse situation, which reduces the yield rate of display panels that have passed product testing and also causes a lot of waste of resources in the actual application of the display panel.

[0044] Figure 3 FIG. 1 is a flow chart of a leakage current detection method according to an embodiment of the present application. Figure 3 As shown, the leakage current detection method includes the following steps:

[0045] Step 301: Control at least part of the driving circuits in the display panel to stop transmitting driving signals to corresponding sub-pixels.

[0046] In a specific embodiment, the branch for transmitting the driving signal in the at least part of the above-mentioned driving circuit can be controlled to be open circuited, so that the at least part of the above-mentioned driving circuit stops transmitting the driving signal to the corresponding sub-pixel, wherein, for the convenience of operation, the at least part of the above-mentioned driving circuit can be all the driving circuits in the display panel, and the at least part of the above-mentioned driving circuit can also be part of the driving circuit in the display panel, and the embodiment of the present application is not limited to this.

[0047] Step 302: Control at least part of the driving circuit to supply power to the corresponding sub-pixel with a reference voltage value.

[0048] Among them, the reference voltage value is the voltage value of the reference voltage, each sub-pixel is connected to the first power supply terminal of the display panel (for example, in the display panel of the above example, the second electrode of the sub-pixel is connected to the second isolation portion, and the first power supply terminal of the display panel is connected to the second isolation portion, so that the sub-pixel is indirectly connected to the first power supply terminal of the display panel), and the voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is less than the light-up voltage of the sub-pixel corresponding to the driving circuit, that is, for each driving circuit of at least part of the above-mentioned driving circuits, the reference voltage Vref corresponding to the driving circuit-the voltage VSS of the first power supply terminal of the display panel is less than the light-up voltage VD of the sub-pixel corresponding to the driving circuit, for example, VD is 0.5V, VSS is -5.4V, Vref is -5V, -5-(-5.4)=0.4V<0.5V.

[0049] In a specific embodiment, each driving circuit has a port for inputting a reference voltage whose voltage value is a reference voltage value. After controlling at least part of the above-mentioned driving circuits to stop transmitting driving signals to corresponding sub-pixels, for each driving circuit in at least part of the above-mentioned driving circuits, a corresponding reference voltage can be input into the port for inputting a reference voltage in the driving circuit, so that the circuit branch where the port is located generates current and transmits current to the sub-pixel corresponding to the driving circuit, thereby realizing power supply for the sub-pixel corresponding to the driving circuit.

[0050] Since the voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is smaller than the lighting voltage of the sub-pixel corresponding to the driving circuit, the reference voltage is basically insufficient to make the sub-pixel emit light.

[0051] Step 303: Determine a leakage current detection result of the display panel according to the current received by the current monitoring terminal of the display panel.

[0052] The current monitoring terminal is arranged at the first power supply terminal, so that the current received by the current monitoring terminal is the sum of the current flowing through the first conductive path of each sub-pixel and the current flowing through the second conductive path of each sub-pixel.

[0053] In a specific embodiment, a current detection device (such as a PD) can be connected to the current monitoring end of the display panel to obtain the current received by the current monitoring end of the display panel. If the current is too large, it means that more sub-pixels in the display panel are leaking, and it can be determined that the display panel has leaked. If the current is too small, it means that fewer sub-pixels in the display panel are leaking, and it can be determined that the display panel is normal.

[0054] In an embodiment of the present application, at least part of the driving circuits in the display panel can be controlled to stop transmitting driving signals to corresponding sub-pixels, and at least part of the driving circuits can be controlled to power the corresponding sub-pixels with a reference voltage value, that is, to ensure that the transmission current between the driving circuit and the sub-pixel is 0 or approximately 0, and then the leakage current detection result of the display panel is determined based on the current received by the current monitoring end of the display panel. Therefore, since the voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is smaller than the lighting voltage of the sub-pixel corresponding to the driving circuit, the reference voltage whose voltage value is the reference voltage value is basically insufficient to make the sub-pixel emit light, so that after at least part of the driving circuit supplies power to the corresponding sub-pixel with the reference voltage value, the conductive path in these sub-pixels that is used to be energized under the action of the driving signal to enable the sub-pixel to work normally is basically in an open circuit state, and since the current monitoring terminal is arranged at the first power supply terminal, after at least part of the driving circuit supplies power to the corresponding sub-pixel with the reference voltage value, the current received by the current monitoring terminal of the display panel is basically the sum of the leakage currents generated by the leakage current of these sub-pixels, and further, according to the current received by the current monitoring terminal of the display panel, the leakage current detection result of the display panel can be determined, thereby realizing the leakage current detection of the display panel, improving the yield rate of the display panel that passes the product inspection, and reducing the waste of resources of the display panel in the actual application process.

[0055] Furthermore, the leakage current detection method in the embodiment of the present application can realize leakage current detection more conveniently and quickly, so that the display panel that passes the leakage current detection has better picture quality at low brightness.

[0056] In a possible implementation, the above step 301 may include the following specific processing:

[0057] Controlling the control module in at least part of the above-mentioned driving circuit to shut down so that the driving voltage provided by at least part of the above-mentioned driving circuit to the corresponding sub-pixel is less than the operating voltage of the sub-pixel, wherein the control module is electrically connected to the first electrode of the corresponding sub-pixel, and the driving voltage refers to the voltage transmitted from the power supply of the driving circuit to the anode of the sub-pixel via the control module.

[0058] Therefore, the driving signal transmitted to the sub-pixel can be stopped only by controlling the shutdown of the control module. The process is relatively simple and convenient, and the detection efficiency is improved.

[0059] Optionally, the controlling of shutting down a control module in at least part of the driving circuit comprises the following specific processing: shutting down at least one transistor in the control module.

[0060] In a specific embodiment, when at least part of the driving circuits controlling the display panel stops transmitting driving signals to corresponding sub-pixels, the control transistors included in each driving circuit in the at least part of the driving circuits can be controlled to be turned off, so that the at least part of the driving circuits stop providing driving signals to the corresponding sub-pixels through the included control transistors.

[0061] The control transistor is connected to the first electrode of the corresponding sub-pixel, and the sub-pixel corresponding to the control transistor is the sub-pixel corresponding to the driving circuit where the control transistor is located.

[0062] For example, for a display panel including a basic 2T1C driving circuit, the driving transistor therein is directly connected to the anode of the sub-pixel, and the control transistor can be the driving transistor. For a display panel including a general 7T1C driving circuit, the light-emitting control tube therein is connected to the anode of the sub-pixel, and the control transistor can be the light-emitting control tube or the driving transistor.

[0063] For another example, Figure 4 This is a partial equivalent circuit diagram of a display panel according to another embodiment of the present application. Figure 4 As shown, based on the display panel of the above example, Id, D, Rs-C, Rs-L and ELVSS are all referred to the above Figure 3 Definition of the symbols in, in addition, ELVDD is the second power supply terminal of the display panel (the second power supply terminal is the port for connecting the positive power supply of the display panel), T1, T2 and T3 are all transistors included in the driving circuit, among which T2 is the control transistor, a1 and a2 are both ports of the transistor, based on this, by controlling the control transistor T2 to turn off, it is possible to stop providing the driving signal Id to the sub-pixel.

[0064] Therefore, the supply of driving signals to the sub-pixels can be stopped only by controlling the transistor to be turned off. The process is relatively simple and convenient, and the detection efficiency is improved.

[0065] Optionally, the control transistor is a metal oxide semiconductor field effect transistor, and the source or drain of the control transistor is connected to the first electrode of the corresponding sub-pixel. Based on this, in the process of controlling the control transistor included in each driving circuit in at least part of the above-mentioned driving circuit to turn off, the corresponding black state control voltage can be input to the gate of each control transistor to turn off each control transistor.

[0066] For example, Figure 4 As shown, the source or drain of the control transistor T2 is connected to the first electrode of the sub-pixel through the transistor T3. Based on this, in the process of controlling the control transistor included in each driving circuit in at least part of the above-mentioned driving circuit to turn off, a black state control voltage for turning off T2 can be input to the gate of T2 to turn off T2.

[0067] Therefore, by controlling the input of the black state control voltage to the control transistor, it is possible to stop providing the driving signal to the sub-pixel, which further simplifies the process of stopping the driving signal and improves the detection efficiency.

[0068] Optionally, the control transistor is an N-type metal oxide semiconductor field effect transistor (NMOS), and a black state control voltage corresponding to the control transistor is positively correlated with a light-on voltage of a sub-pixel corresponding to the control transistor.

[0069] For example, considering that the turn-on voltages of sub-pixels of different colors in the display panel are different, and the turn-on voltages of sub-pixels of the same color are the same, the black state control voltages corresponding to the control transistors corresponding to the red sub-pixels in the display panel can be set to be the same, the black state control voltages corresponding to the control transistors corresponding to the green sub-pixels in the display panel can be set to be the same, and the black state control voltages corresponding to the control transistors corresponding to the blue sub-pixels in the display panel can be set to be the same. Among the red sub-pixels, green sub-pixels and blue sub-pixels in the display panel, the black state control voltages corresponding to the control transistors corresponding to any two sub-pixels of different colors are different, and, for the control transistors corresponding to any two sub-pixels of different colors, the smaller the turn-on voltage of the corresponding sub-pixel, the smaller the black state control voltage corresponding to the control transistor.

[0070] Therefore, the smaller the lighting voltage of the corresponding sub-pixel, the smaller the black state control voltage corresponding to the control transistor. Compared with the same black state control voltage corresponding to all control transistors, the black state control voltage corresponding to the control transistor corresponding to the sub-pixel that is easier to light up in this application can be smaller to save power consumption.

[0071] Optionally, the control transistor is a P-type metal oxide semiconductor field effect transistor (PMOS), and a black state control voltage corresponding to the control transistor is negatively correlated with a light-on voltage of a sub-pixel corresponding to the control transistor.

[0072] For example, considering that the turn-on voltages of sub-pixels of different colors in the display panel are different, and the turn-on voltages of sub-pixels of the same color are the same, the black state control voltages corresponding to the control transistors corresponding to the red sub-pixels in the display panel can be set to be the same, the black state control voltages corresponding to the control transistors corresponding to the green sub-pixels in the display panel can be set to be the same, and the black state control voltages corresponding to the control transistors corresponding to the blue sub-pixels in the display panel can be set to be the same; among the red sub-pixels, green sub-pixels and blue sub-pixels in the display panel, the black state control voltages corresponding to the control transistors corresponding to any two sub-pixels of different colors are different, and, for the control transistors corresponding to any two sub-pixels of different colors, the larger the turn-on voltage of the corresponding sub-pixel, the smaller the black state control voltage corresponding to the control transistor.

[0073] Therefore, the larger the lighting voltage of the corresponding sub-pixel is, the smaller the black state control voltage corresponding to the control transistor is. Compared with the same black state control voltage corresponding to all control transistors, the black state control voltage corresponding to the control transistor corresponding to the sub-pixel that is less likely to light up in this application can be smaller to save power consumption.

[0074] In a possible implementation, the driving circuit includes a reset module connected to the first electrode of the sub-pixel, and the reset module is used to transmit a reference voltage whose voltage value is a reference voltage value to the first electrode of the sub-pixel. Based on this, the above step 302 may include the following specific processing:

[0075] The reset modules in at least part of the driving circuits are controlled to be turned on, so that at least part of the driving circuits use the reference voltage transmitted by the reset modules to supply power to the corresponding sub-pixels.

[0076] Therefore, by simply turning on the reset module, it is possible to power the corresponding sub-pixel with the reference voltage, which is a relatively simple and convenient process and improves detection efficiency.

[0077] In a possible implementation, the reset module includes a reset transistor, one end of the reset transistor is connected to the first electrode of the sub-pixel, and the other end of the reset transistor is connected to a port for inputting a reference voltage;

[0078] The above-mentioned controlling the reset module in at least part of the driving circuit to be turned on includes the following specific processing: controlling the reset transistor in at least part of the driving circuit to be turned on.

[0079] For example, Figure 5 This is a partial equivalent circuit diagram of a display panel according to another embodiment of the present application. Figure 5 As shown, based on the display panel of the above example, Id, D, Rs-C, Rs-L, ELVSS, ELVDD, T1, T2, T3, a1 and a2 are all referred to the above Figure 4 Definition of the symbols in, in addition, T4 and T5 are transistors included in the driving circuit, wherein T4 is a reset transistor, a3, a4, a5 and a6 are all ports of the transistor, wherein a3 is a port for inputting a reference voltage Vref, based on this, by controlling the reset transistor T4 to be turned on, the first electrode of the sub-pixel corresponding to the reference voltage value can be reset, thereby eliminating the influence of the previous frame display.

[0080] Therefore, the corresponding sub-pixel can be powered with the reference voltage value only by turning on the transistor, and the process is relatively simple and convenient, thereby improving the detection efficiency.

[0081] Optionally, the reset transistor is a metal oxide semiconductor field effect transistor, and a port of the driving circuit for inputting a reference voltage is connected to a source or a drain of the reset transistor included in the driving circuit.

[0082] For example, Figure 5 As shown, port a3 for inputting reference voltage Vref is connected to the source or drain of reset transistor T4. Based on this, in the process of controlling at least part of the above-mentioned driving circuit to power the corresponding sub-pixel with the reference voltage value through the included reset transistor, a voltage for turning on T4 can be input to the gate of T4 to turn on T4.

[0083] Therefore, by controlling the voltage input to the reset transistor, it is possible to power the corresponding sub-pixel with the reference voltage value, further simplifying the process of powering the sub-pixel with the reference voltage value and improving detection efficiency.

[0084] Optionally, the reset transistor is a switch tube for controlling the corresponding sub-pixel to reset the first electrode (ie, anode reset), and the port for inputting the reference voltage of the driving circuit is a port for inputting the reset voltage for resetting the first electrode.

[0085] The sub-pixel corresponding to the reset transistor is the sub-pixel corresponding to the driving circuit where the reset transistor is located.

[0086] In the embodiment of the present application, the reset transistor used to control the driving circuit to power the corresponding sub-pixel with a reference voltage value is a switch tube used to control the corresponding sub-pixel to reset the first electrode, thereby realizing leakage current detection without improving the structure of the current display panel, facilitating operation and saving costs.

[0087] There are multiple implementations of step 303. Two implementations of step 303 are described below:

[0088] In a specific implementation, the above step 303 may include the following specific processing: obtaining the average current value of the current received by the current monitoring end of the display panel within the target time length; determining the leakage detection result according to the relationship between the average current value and the preset current threshold.

[0089] The target duration can be set according to actual needs, and the embodiment of the present application is not limited to this. The preset current threshold can be 0mA to 1mA, for example, 0.5mA or 0.8mA.

[0090] Optionally, before obtaining the average current value, the leakage current detection method also includes: collecting the brightness of the display panel under the reference voltage value; if the collected brightness is less than the preset brightness threshold, continuing to obtain the average current value; if the collected brightness is greater than or equal to the preset brightness threshold, controlling the driving circuit of the illuminated sub-pixel to stop transmitting the driving signal to the corresponding sub-pixel, for example, the reference voltage value can be reduced, and the brightness of the display panel under the reduced reference voltage value is collected, thereby, the leakage current detection result can be determined according to the relationship between the average current value and the preset current value, and the relationship between the collected brightness and the preset brightness threshold.

[0091] The preset brightness threshold may be 0 nit to 0.002 nit, such as 0.001 nit or 0.0005 nit.

[0092] Therefore, the leakage current detection result not only takes into account the current received by the current monitoring end of the display panel, but also takes into account the brightness of the sub-pixels in the display panel, so as to ensure as much as possible that after at least part of the above-mentioned driving circuit supplies power to the corresponding sub-pixels with the reference voltage, the conductive paths in these sub-pixels that are used to be energized under the action of the driving signal so that the sub-pixels can work normally are in an open-circuit state, so as to reduce the interference of the driving signal on the current at the current monitoring end of the display panel, thereby improving the accuracy of the leakage current detection result.

[0093] Optionally, the leakage detection result includes:

[0094] If the collected brightness is less than the preset brightness threshold, and the average current value is greater than the preset current threshold, it is determined that the leakage detection result is that the display panel has leakage.

[0095] Optionally, the leakage detection result includes:

[0096] If the collected brightness is less than the preset brightness threshold, and the average current value is less than or equal to the preset current threshold, it is determined that the leakage current detection result is that the display panel is normal.

[0097] Optionally, based on "the above-mentioned step 301 includes the following specific processing: inputting a corresponding black state control voltage to a control module in at least part of the driving circuit, and making the driving voltage provided by the driving circuit to the corresponding sub-pixel less than the operating voltage of the sub-pixel", the above-mentioned leakage current detection method also includes the following specific processing: if the collected brightness is greater than or equal to a preset brightness threshold, increasing or decreasing the black state control voltage input to each control module so as to reduce the driving voltage provided by the driving circuit to the corresponding sub-pixel.

[0098] In a specific embodiment, based on the scheme that “the above step 301 includes the following specific processing: inputting a corresponding black state control voltage to the gate of the control transistor included in each driving circuit in the above at least part of the driving circuit to turn off each control transistor, and causing the above at least part of the driving circuit to stop providing a driving signal to the corresponding sub-pixel through the control transistor included, wherein the control transistor is an N-type metal oxide semiconductor field effect transistor, and the source or drain of the control transistor is connected to the first electrode of the sub-pixel corresponding to the driving circuit where the control transistor is located” (the specific implementation of the scheme has been introduced above, and the embodiments of the present application will not be repeated here), the leakage current detection method also includes the following specific processing:

[0099] If the collected brightness is greater than or equal to the preset brightness threshold, the black state control voltage input to the gate of each control transistor is reduced, so that the driving voltage provided by the driving circuit to the corresponding sub-pixel is reduced.

[0100] For example, if the collected brightness is greater than or equal to a preset brightness threshold, the black state control voltage input to the gate of each control transistor is gradually reduced according to a preset voltage step until the collected brightness is less than the preset brightness threshold. At this time, the current transmitted by the default control transistor to the sub-pixel anode is 0.

[0101] In the embodiment of the present application, based on the fact that the control transistor is an N-type metal oxide semiconductor field effect transistor, if the collected brightness is greater than or equal to the preset brightness threshold, the black state control voltage input to the gate of each control transistor is reduced. Therefore, since the smaller the black state control voltage input to the NMOS gate, the smaller the possibility that the control transistor is not turned off, reducing the black state control voltage can further ensure that more control transistors in the display panel are in the off state, so that the brightness collected subsequently is less than the preset brightness threshold.

[0102] In another specific embodiment, based on the scheme that “the above step 301 includes the following specific processing: inputting a corresponding black state control voltage to the gate of the control transistor included in each driving circuit in at least part of the driving circuits to turn off each control transistor, and causing at least part of the driving circuits to stop providing a driving signal to the corresponding sub-pixel through the control transistor included, wherein the control transistor is a P-type metal oxide semiconductor field effect transistor, and the source or drain of the control transistor is connected to the first electrode of the sub-pixel corresponding to the driving circuit where the control transistor is located” (the specific implementation of the scheme has been introduced above, and the embodiments of the present application will not be repeated here), the leakage current detection method also includes the following specific processing:

[0103] If the brightness is greater than or equal to the preset brightness threshold, the black state control voltage input to the gate of each control transistor is increased.

[0104] For example, if the collected brightness is greater than or equal to a preset brightness threshold, the black state control voltage input to the gate of each control transistor is gradually increased according to a preset voltage step until the collected brightness is less than the preset brightness threshold.

[0105] In the embodiment of the present application, based on the fact that the control transistor is a P-type metal oxide semiconductor field effect transistor, if the collected brightness is greater than or equal to the preset brightness threshold, the black state control voltage input to the gate of each control transistor is increased. Therefore, since the larger the black state control voltage input to the PMOS gate, the smaller the possibility that the control transistor is not turned off, increasing the black state control voltage can further ensure that more control transistors in the display panel are in the off state, so that the brightness collected subsequently is less than the preset brightness threshold.

[0106] In another possible implementation, the above step 303 may include the following specific processing: obtaining the average current value of the current received by the current monitoring end of the display panel within the target time length; if the average current value is greater than the preset current threshold, determining that the leakage detection result is that the display panel has leakage.

[0107] The specific values ​​of the target duration and the preset current threshold can be referred to above, and the embodiments of the present application will not be repeated here.

[0108] Therefore, compared with the previous implementation of step 303, the leakage detection result in this implementation only needs to consider the current at the current monitoring end of the display panel, and the operation is relatively simple and easy to implement.

[0109] Optionally, the leakage current detection method further includes the following specific processing:

[0110] If the average current value is less than or equal to the preset current threshold, it is determined that the leakage detection result is that the display panel is normal.

[0111] Optionally, if the average current value is less than or equal to a preset current threshold, it is determined that the leakage current detection result is that the display panel is normal.

[0112] Based on any implementation of step 303 above:

[0113] In a possible implementation, the preset current threshold is positively correlated with the number of sub-pixels corresponding to at least part of the driving circuits. For example, the preset current threshold is proportional to the number of sub-pixels corresponding to at least part of the driving circuits.

[0114] In a possible implementation, the above-mentioned acquisition of the average current value of the current received by the current monitoring end of the display panel within the target time length may include the following specific processing: determining the average current value based on the accumulated charge of the current received by the current monitoring end of the display panel within the target time length.

[0115] In a specific embodiment, when obtaining the average current value, a detection device for detecting the cumulative charge amount of the current received within the target duration, such as a process controller (PG) or a multimeter, can be connected to the current monitoring end of the display panel, and then the average current value is determined based on the detected cumulative charge amount and the target duration.

[0116] In a possible implementation, the target duration is greater than or equal to a duration threshold.

[0117] Therefore, a sufficiently large target duration can reduce the possibility that a sufficient accumulated charge is not detected due to a target duration that is too short, resulting in an average current value that is too small. This in turn reduces the possibility that the leakage detection result obtained when the display panel leaks current is that the display panel is normal, thereby improving the accuracy of the leakage detection result.

[0118] Optionally, the duration threshold may be determined according to the resolution and refresh rate of the display panel.

[0119] For example, if the number of lines in the resolution of the display panel is 1200 and the refresh rate is 60Hz, then the unit duration H can be determined to be 1 / 60 / 1200 seconds, and the duration threshold can be 8H to 12H. For example, the duration threshold can be 10H, and the target duration is 10H. Based on this, the duration threshold can also be greater than the time when the second switch tube is turned on during a single anode reset. For example, the time when the second switch tube is turned on during a single anode reset is generally 4H to 6H, and the target duration is 10H.

[0120] In a possible implementation, the current monitoring terminal is arranged at the first power supply terminal connected to the second electrode of the sub-pixel, for example, the current monitoring terminal is connected to Figure 2 , Figure 4 and Figure 5 At the ELVSS port in the embodiment, the first electrode of the sub-pixel is electrically connected to the driving circuit, and the specific connection method has been described above, and the embodiment of the present application will not be repeated here.

[0121] Optionally, the leakage current of the display panel includes leakage current in sub-pixels exceeding a preset number, and the sub-pixel leakage current includes that the contact area between the light-emitting layer of the sub-pixel and the isolation structure is greater than a preset contact area, wherein the specific value of the preset number can be set according to actual needs, and the embodiments of the present application are not limited to this, and the above-mentioned preset current threshold is positively correlated with the preset number.

[0122] Optionally, the leakage current detection method further includes the following specific processing:

[0123] If the leakage detection result shows that the display panel has leaked, the display panel is intercepted from the display panel production line. For example, if the leakage detection result shows that the display panel has leaked, the display panel production line can automatically intercept the display panel to reduce the possibility of missed detection.

[0124] Corresponding to the above method embodiment, Figure 6 A schematic diagram of a leakage current detection device according to an embodiment of the present application is shown. Figure 6 As shown, the leakage current detection device 600 includes:

[0125] A first control unit 601 is used to control at least part of the driving circuits of the display panel to stop transmitting a driving signal to a corresponding sub-pixel, wherein the driving signal is a signal that drives the corresponding sub-pixel to work normally;

[0126] A second control unit 602 is used to control at least part of the above-mentioned driving circuit to power the corresponding sub-pixel with a reference voltage value, wherein each sub-pixel is connected to the first power supply terminal of the display panel, and the voltage difference between the reference voltage value and the voltage of the first power supply terminal of the display panel is less than the lighting voltage of the sub-pixel corresponding to the driving circuit;

[0127] The result determination unit 603 is used to determine the leakage current detection result of the display panel according to the current received by the current monitoring terminal of the display panel, wherein the current monitoring terminal is set at the first power supply terminal.

[0128] It should be noted that the leakage current detection device of this embodiment is used to implement the corresponding leakage current detection method in the aforementioned method embodiment, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0129] Figure 7 This is a schematic block diagram of an electronic device provided in an embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the electronic device. Figure 7 As shown, the electronic device may include: a processor (processor) 702 , a communication interface (Communications Interface) 704 , a memory (memory) 706 , and a communication bus 708 .

[0130] in:

[0131] The processor 702 , the communication interface 704 , and the memory 706 communicate with each other via a communication bus 708 .

[0132] The communication interface 704 is used to communicate with other electronic devices or servers.

[0133] The processor 702 is used to execute the program 710, and specifically can execute the relevant steps in any of the aforementioned leakage current detection method embodiments.

[0134] Specifically, the program 710 may include program codes, which include computer operation instructions.

[0135] The processor 702 may be a CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the smart device may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0136] RISC-V is an open source instruction set architecture based on the Reduced Instruction Set (RISC) principle. It can be applied to various aspects such as single-chip microcomputers and FPGA chips. Specifically, it can be applied to the fields of IoT security, industrial control, mobile phones, personal computers, etc., and because it is designed with small, fast, and low-power realities in mind, it is particularly suitable for modern computing devices such as warehouse-scale cloud computers, high-end mobile phones, and tiny embedded systems. With the rise of artificial intelligence Internet of Things (AIoT), the RISC-V instruction set architecture has also received more and more attention and support, and is expected to become the next generation of widely used CPU architecture.

[0137] The computer operation instructions in the embodiment of the present application may be computer operation instructions based on the RISC-V instruction set architecture, and correspondingly, the processor 702 may be designed based on the RISC-V instruction set. Specifically, the chip of the processor in the electronic device provided in the embodiment of the present application may be a chip designed with the RISC-V instruction set, and the chip may execute executable code based on the configured instructions, thereby implementing the leakage current detection method in the above embodiment.

[0138] The memory 706 is used to store the program 710. The memory 706 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0139] The program 710 may be specifically used to enable the processor 702 to execute the leakage current detection method in any of the aforementioned embodiments.

[0140] The specific implementation of each step in program 710 can refer to the corresponding description of the corresponding steps and units in any of the aforementioned leakage current detection method embodiments, which will not be repeated here. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described devices and modules can refer to the corresponding process description in the aforementioned method embodiments, which will not be repeated here.

[0141] It should be noted that the electronic device of this embodiment is used to implement the corresponding leakage current detection method in the aforementioned method embodiment and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0142] The present application also provides a computer-readable storage medium storing instructions for causing a machine to execute the leakage current detection method as described herein. Specifically, a system or device equipped with a storage medium can be provided, on which a software program code implementing the functions of any of the above embodiments is stored, and a computer (or CPU or MPU) of the system or device reads and executes the program code stored in the storage medium.

[0143] In this case, the program code read from the storage medium itself can implement the function of any one of the above embodiments, so the program code and the storage medium storing the program code constitute part of the present application.

[0144] The storage medium embodiments for providing the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), a magnetic tape, a non-volatile memory card, and a ROM. Alternatively, the program code can be downloaded from a server computer by a communication network.

[0145] An embodiment of the present application also provides a computer program product, including computer instructions, which instruct a computing device to perform any corresponding operation in the above-mentioned multiple method embodiments.

[0146] It should be noted that the user-related information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to sample data used to train the model, data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0147] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present application can be split into more components / steps, or two or more components / steps or partial operations of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of the present application.

[0148] The above-mentioned method according to the embodiment of the present application can be implemented in hardware, firmware, or implemented as software or computer code that can be stored in a recording medium (such as a CD ROM, RAM, floppy disk, hard disk or magneto-optical disk), or implemented as a computer code originally stored in a remote recording medium or a non-temporary machine-readable medium downloaded through a network and to be stored in a local recording medium, so that the method described herein can be stored in such software processing on a recording medium using a general-purpose computer, a special-purpose processor or programmable or special-purpose hardware (such as an ASIC or FPGA). It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code, and when the software or computer code is accessed and executed by a computer, a processor or hardware, the method described herein is implemented. In addition, when a general-purpose computer accesses the code for implementing the method shown here, the execution of the code converts the general-purpose computer into a special-purpose computer for executing the method shown here.

[0149] It should be noted that the user-related information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to sample data used to train the model, data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0150] Those of ordinary skill in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for specific applications, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0151] The above implementation methods are only used to illustrate the embodiments of the present application, and are not limitations on the embodiments of the present application. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present application. The scope of patent protection of the embodiments of the present application should be limited by the claims.

Claims

1. A leakage current detection method, characterized in that: include: Controlling at least part of the driving circuits of the display panel to stop transmitting a driving signal to a corresponding sub-pixel, wherein the driving signal is a signal that drives the corresponding sub-pixel to work normally; Controlling at least part of the driving circuit to supply power to the corresponding sub-pixel with a reference voltage value, wherein each sub-pixel is connected to a first power supply terminal of the display panel, and a voltage difference between the reference voltage value and a voltage of the first power supply terminal of the display panel is less than a lighting voltage of the sub-pixel corresponding to the driving circuit; A leakage current detection result of the display panel is determined according to a current received by a current monitoring terminal of the display panel, wherein the current monitoring terminal is arranged at the first power supply terminal.

2. The method according to claim 1, characterized in that The step of determining a leakage current detection result of the display panel according to the current received by the current monitoring terminal of the display panel includes: Obtaining an average current value of the current received by the current monitoring terminal of the display panel within a target time length; Determining the leakage current detection result according to the magnitude relationship between the average current value and a preset current threshold; Optionally, before obtaining the average current value, the method further includes: collecting the brightness of the display panel under the reference voltage value; If the brightness is less than the preset brightness threshold, continue to obtain the average current value; If the brightness is greater than or equal to the preset brightness threshold, the driving circuit of the illuminated sub-pixel is controlled to stop transmitting the driving signal to the corresponding sub-pixel; Optionally, the leakage detection result includes: If the brightness is less than a preset brightness threshold, and the average current value is greater than a preset current threshold, determining that the leakage detection result is that the display panel has leakage; Optionally, the leakage detection result includes: If the brightness is less than a preset brightness threshold, and the average current value is less than or equal to the preset current threshold, determining that the leakage current detection result is that the display panel is normal; Optionally, controlling at least part of the driving circuits in the display panel to stop transmitting driving signals to corresponding sub-pixels includes: Inputting a corresponding black state control voltage to a control module in at least part of the driving circuit, and making the driving voltage provided by the driving circuit to the corresponding sub-pixel smaller than the operating voltage of the sub-pixel; The method further comprises: If the brightness is greater than or equal to the preset brightness threshold, the black state control voltage input to each of the control modules is increased or decreased, so that the driving voltage provided by the driving circuit to the corresponding sub-pixel is reduced.

3. The method according to claim 1, characterized in that The step of determining a leakage current detection result of the display panel according to the current received by the current monitoring terminal of the display panel includes: Obtaining an average current value of the current received by the current monitoring terminal of the display panel within a target time length; If the average current value is greater than a preset current threshold, determining that the leakage detection result is that the display panel has leakage; Optionally, the method further comprises: If the average current value is less than or equal to the preset current threshold, it is determined that the leakage detection result is that the display panel is normal.

4. The method according to claim 2 or 3, characterized in that: The preset current threshold is positively correlated with the number of the sub-pixels corresponding to at least part of the driving circuit.

5. The method according to claim 2 or 3, characterized in that: The step of obtaining an average current value of the current received by the current monitoring terminal of the display panel within a target time period includes: The average current value is determined according to the accumulated charge amount of the current received by the current monitoring terminal of the display panel within the target time length.

6. The method according to claim 2 or 3, characterized in that: The target duration is greater than or equal to the duration threshold; Optionally, the duration threshold is determined according to a resolution and a refresh rate of the display panel.

7. The method according to claim 1, characterized in that The current monitoring terminal is arranged at a first power supply terminal connected to the second electrode of the sub-pixel, and the first electrode of the sub-pixel is electrically connected to the driving circuit.

8. The method according to claim 1, characterized in that The step of controlling at least part of the driving circuits of the display panel to stop transmitting the driving signal to the corresponding sub-pixels includes: Controlling the control module in at least part of the driving circuit to be turned off so that the driving voltage provided by at least part of the driving circuit to the corresponding sub-pixel is less than the operating voltage of the sub-pixel, wherein the control module is electrically connected to the first electrode of the corresponding sub-pixel; Optionally, controlling the control module in at least part of the driving circuit to shut down includes: At least one transistor in the control module is turned off.

9. The method according to claim 1, characterized in that: The driving circuit comprises a reset module connected to the first electrode of the sub-pixel, and the reset module is used to transmit a reference voltage whose voltage value is the reference voltage value to the first electrode of the sub-pixel; The controlling at least part of the driving circuit to supply power to the corresponding sub-pixel with a reference voltage value comprises: The reset module in at least part of the driving circuit is controlled to be turned on, so that the reference voltage transmitted by the reset module in at least part of the driving circuit supplies power to the corresponding sub-pixel.

10. The method according to claim 9, characterized in that The reset module comprises a reset transistor, one end of which is connected to the first electrode of the sub-pixel, and the other end of which is connected to the port for inputting the reference voltage; The controlling the reset module in at least part of the driving circuit to be turned on includes: Controlling the reset transistor in at least part of the driving circuit to be turned on; Optionally, the reset transistor is a metal oxide semiconductor field effect transistor, and a port of the driving circuit for inputting a reference voltage is connected to a source or a drain of the reset transistor; Optionally, the reset transistor is a switch tube used to control the corresponding sub-pixel to reset the first electrode, and the port of the driving circuit used to input the reference voltage is a port for inputting the reset voltage for resetting the first electrode, wherein the sub-pixel corresponding to the reset transistor is the sub-pixel corresponding to the driving circuit where the reset transistor is located.

11. The method according to claim 1, characterized in that: The display panel includes a substrate; The sub-pixel is located in an isolation opening formed by an isolation structure, and the isolation structure is located on one side of the substrate; The first electrode of the sub-pixel is disposed on a side of the isolation structure facing the substrate, and the first electrode of the sub-pixel is insulated from the isolation structure; The light emitting layer of the sub-pixel and the second electrode of the sub-pixel are located in the isolation opening, and the second electrode of the sub-pixel is electrically connected to the isolation structure; At least a portion of the light-emitting layer of the sub-pixel is in contact with the isolation structure; The isolation structure includes a conductive material; Optionally, the leakage current of the display panel includes leakage current of more than a preset number of sub-pixels, and the sub-pixel leakage current includes that a contact area between the light-emitting layer of the sub-pixel and the isolation structure is larger than a preset contact area; Optionally, the method further comprises: If the leakage detection result indicates that the display panel has leakage, the display panel is intercepted from a production line of the display panel.

12. A leakage current detection device, characterized in that: The device comprises: A first control unit, configured to control at least part of the driving circuits in the display panel to stop transmitting a driving signal to a corresponding sub-pixel, wherein the driving signal is a signal that drives the corresponding sub-pixel to work normally; a second control unit, configured to control at least part of the driving circuit to supply power to the corresponding sub-pixel with a reference voltage value, wherein each sub-pixel is connected to a first power supply terminal of the display panel, and a voltage difference between the reference voltage value and a voltage at the first power supply terminal of the display panel is less than a lighting voltage of the sub-pixel corresponding to the driving circuit; The result determination unit is used to determine the leakage current detection result of the display panel according to the current received by the current monitoring terminal of the display panel, wherein the current monitoring terminal is arranged at the first power supply terminal.

13. An electronic device, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute an operation corresponding to the method according to any one of claims 1-11.

14. A computer storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

15. A computer program product, characterized in that The method comprises computer instructions for instructing a computing device to execute the method according to any one of claims 1 to 11.

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