Brightness compensation method and device of display panel, display equipment and storage medium

Abstract

The embodiment of the invention provides a brightness compensation method and device of a display panel, display equipment and a storage medium. The method comprises the following steps: determining a refresh frequency of a first display subarea in a plurality of display subareas of the display panel; the first display subarea is the display subarea with the highest frequency in the plurality of display subareas; according to the refresh frequency of the first display partition, a compensation parameter for compensating a control voltage of a pixel circuit in the display panel is determined, and the control voltage is used for controlling a switch unit of the pixel circuit to be conducted; and according to the compensation parameter, at least adjusting the control voltage of the pixel circuit in the second display subarea in the plurality of display subareas.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular to a brightness compensation method, apparatus, display device and storage medium for a display panel. Background Art

[0002] Organic Light Emitting Diode (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] Patent applications CN118251982A, 202311324257.8, 202310731471.9, 202311686416.9, 202310707183.X, 202310479495.X, 202310445544.8, 202310731471.9, CN116685174A, and CN116669477A record relevant contents of pixel circuits of OLED display products for reference.

[0004] However, the display effects of current OLED display products still need to be optimized. Summary of the invention

[0005] In view of this, embodiments of the present application provide a new method, apparatus, display device and storage medium for brightness compensation of a display panel to at least partially solve the above problems.

[0006] An embodiment of the present application provides a brightness compensation method for a display panel, comprising: determining a refresh frequency of a first display partition among multiple display partitions of a display panel; the first display partition is a display partition with the largest frequency among the multiple display partitions; according to the refresh frequency of the first display partition, determining a compensation parameter for compensating a control voltage of a pixel circuit in a second display partition, wherein the second display partition is a display partition among the multiple display partitions whose refresh frequency is lower than that of the first display partition, the control voltage is a voltage for controlling a switch unit of the pixel circuit to be turned on, the switch unit comprising a transistor; and adjusting the control voltage of the pixel circuit in the second display partition according to the compensation parameter.

[0007] In some optional embodiments, the method further includes: when the refresh frequencies of the display partitions on the display panel are the same, determining a given preset voltage as the control voltage corresponding to each of the display partitions; wherein the value of the preset voltage is a fixed value.

[0008] In some optional embodiments, determining the compensation parameters corresponding to the second display partition based on the refresh frequency of the first display partition includes: obtaining compensation parameter comparison information, the compensation parameter comparison information including the refresh frequency of the first display partition, and the compensation parameters corresponding to the refresh frequency of the first display partition; determining the compensation parameters based on the refresh frequency of the first display partition and the compensation parameter comparison information.

[0009] In some optional embodiments, adjusting the control voltage of the pixel circuit in the second display partition according to the compensation parameter includes: adjusting a reference value of the control voltage according to the compensation parameter to obtain the adjusted control voltage.

[0010] In some optional embodiments, the pixel circuit also includes a driving unit and a pixel light-emitting unit, and the switching unit includes a data writing unit; the first end of the data writing unit is connected to the data line; the second end of the data writing unit is connected to the first end of the driving unit, the first end of the driving unit is connected to the first power line, the second end of the driving unit is connected to the first end of the pixel light-emitting unit, and the second end of the pixel light-emitting unit is connected to the second power line; the display cycle of the pixel circuit includes a first time period; the method also includes: according to the adjusted control voltage, controlling the data writing unit in the second display partition to be turned on in the first time period, so that the data line writes the driving voltage for driving the driving unit to the pixel circuit in the second display partition.

[0011] In some optional embodiments, the switching unit also includes a first light-emitting control unit and a second light-emitting control unit, the first end of the driving unit is connected to the first power line through the first light-emitting control unit, and the second end of the driving unit is connected to the pixel light-emitting unit through the second light-emitting control unit; the display cycle of the pixel circuit also includes a second time period, and the second time period is after the first time period; the method also includes: according to the adjusted control voltage, controlling the first light-emitting control unit and the second light-emitting control unit in the second display partition to be turned on in the second time period.

[0012] In some optional embodiments, the switching unit further includes a first initialization unit and a second initialization unit; the first initialization unit is connected to the second end of the driving unit, and the second initialization unit is connected to the first end of the pixel light-emitting unit; the display cycle of the pixel circuit further includes a third time period, and the third time period is between the first time period and the second time period; the method further includes: according to the adjusted control voltage, controlling the first initialization unit and the second initialization unit in the second display partition to be turned on in the third time period to reset the voltage at the second end of the driving unit and the voltage at the first end of the pixel light-emitting unit in the second display partition.

[0013] An embodiment of the present application also provides a brightness compensation device for a display panel, comprising: a refresh frequency determination module, used to determine the refresh frequency of a first display partition among multiple display partitions of the display panel; the first display partition is a display partition with the largest frequency among the multiple display partitions; a compensation parameter determination module, used to determine, according to the refresh frequency of the first display partition, a compensation parameter for compensating for a control voltage of a pixel circuit in a second display partition, wherein the second display partition is a display partition among the multiple display partitions whose refresh frequency is lower than that of the first display partition, and the control voltage is a voltage for controlling a switch unit of the pixel circuit to be turned on, and the switch unit includes a transistor; a compensation module, used to adjust the control voltage of the pixel circuit in the second display partition according to the compensation parameter.

[0014] An embodiment of the present application also provides a display device, including: a display panel, a processor, a memory, a communication interface and a communication bus, wherein the display panel, 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 computer software, and the computer software enables the processor to execute the method described in any of the above method embodiments.

[0015] An embodiment of the present application further provides a computer storage medium on which a computer program is stored. When the program is executed by a processor, a method in any of the above method embodiments is implemented.

[0016] In an embodiment of the present application, the refresh frequency of a first display partition among multiple display partitions of a display panel can be determined; the first display partition is the display partition with the highest frequency among the multiple display partitions; according to the refresh frequency of the first display partition, a compensation parameter for compensating for the control voltage of a pixel circuit in the display panel is determined, and according to the compensation parameter, at least the control voltage of a pixel circuit in a second display partition among the multiple display partitions is adjusted, so that when the refresh frequency of a display partition on the display panel is adjusted, the refresh frequency of the first display partition among the multiple display partitions after the refresh frequency adjustment can be determined, and the corresponding compensation parameter can be determined according to the refresh frequency of the first display partition, and the control voltage of the pixel circuit in the second display partition is adjusted by using the compensation parameter to adjust the brightness of the second display partition, thereby compensating for the brightness effect caused by the refresh frequency of the first display partition, so that the brightness of the second display partition is within the range of its reference brightness, and flickering of the second display partition with a lower frequency is avoided, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a schematic diagram of an exemplary structure of a display device according to an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of an exemplary structure of a display panel according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of an exemplary structure of another display device according to an embodiment of the present application;

[0021] Figure 4 is a flowchart of a method for compensating brightness of a display panel according to an embodiment of the present application;

[0022] Figure 5 A schematic diagram of a pixel circuit according to an embodiment of the present application;

[0023] Figure 6 A schematic diagram of another pixel circuit according to an embodiment of the present application;

[0024] Figure 7 A schematic diagram of a control voltage adjustment result of a second display partition according to an embodiment of the present application;

[0025] Figure 8is a schematic structural diagram of a brightness compensation device for a display panel according to an embodiment of the present application;

[0026] Fig. 9 It is a schematic diagram of a display device according to an embodiment of the present application.

[0027] Reference numerals:

[0028] 1. Display device; 10. Display panel;

[0029] 100, pixel circuit; 110, driving unit; 120, pixel light emitting unit; 130, data writing unit; 141, first light emitting control unit; 142, second light emitting control unit; 151, first initialization unit; 152, second initialization unit; 153, third initialization unit; 160, holding unit; 170, refresh control unit;

[0030] L1, first scan line; L2, second scan line; L3, third scan line; L4, fourth scan line; L5, fifth scan line; Vref1, first reference voltage; Vref2, second reference voltage; Vref3, third reference voltage

[0031] T1, first transistor; T2, second transistor; T3, third transistor; T4, fourth transistor; T5, fifth transistor; T6, sixth transistor; T7, seventh transistor; T8, eighth transistor; C, holding capacitor;

[0032] ELVDD, first power line; ELVSS, second power line; ELVdata, data line;

[0033] AA, display area; SA, non-display area. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Figure 1 It is a schematic diagram of an exemplary structure of a display device 1 according to an embodiment of the present application.

[0042] See also Figure 1, an embodiment of the present application provides a display device 1. The display device 1 is an electronic device having an image (including: static image or dynamic image, wherein the dynamic image may be a video) display function. For example, the display device 1 may be any one of a display, a television, a billboard, a digital photo frame, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a portable camcorder, a viewfinder, a navigator, a large-area wall, a home appliance, an information query device (such as business query devices for e-government, banks, hospitals, power and other departments), a monitor, an electronic painting screen, a virtual reality (VR) display device, an augmented reality (AR) display device and a vehicle-mounted display, but is not limited thereto.

[0043] In some embodiments, see Figure 1 The display device 1 may include a display panel 10. For example, the display panel 10 may be a self-luminous display panel 10. For example, the display panel 10 may be any one of an organic light emitting diode (OLED) display panel 10, a quantum dot light emitting diode (QLED) display panel 10, and a micro light emitting diode (Mini LED or Micro LED) display panel 10. In an optional embodiment of the present application, the display panel 10 included in the display device 1 may be a display panel 10 described in any of the following embodiments.

[0044] See also Figure 2 The display panel 10 has a display area AA and a non-display area SA, wherein the display area AA is an area on the display panel 10 for displaying images, and the non-display area SA is an area on the display panel 10 other than the display area AA. The non-display area SA may be located on at least one side (e.g., one side, or multiple sides) of the display area AA, for example, the non-display area SA may be arranged around the display area AA.

[0045] A plurality of pixel circuits are arranged in the display area AA. A plurality of pixel circuit arrays are arranged in the display area AA, and each pixel circuit can display a single color. For example, the pixel circuits arranged in the display area AA may include a red pixel circuit R, a green pixel circuit G, and a blue pixel circuit B, which are used to display red, green, and blue, respectively. A plurality of pixel circuits may be arranged in the display area AA according to a specified rule. For example, a plurality of sub-pixels are arranged in a plurality of rows and columns. Since each pixel circuit includes a pixel circuit, the pixel circuits are also arranged in a plurality of rows and columns.

[0046] It should be noted that the above-mentioned pixel circuit is the smallest unit for displaying a picture in the display panel 10 . Figure 5 for Figure 2 Schematic diagram of an optional embodiment of a pixel circuit in the display area AA. The pixel circuit can be configured to respond to the received scan signal, write the data signal of the data line, and drive the pixel light-emitting unit in the pixel circuit to emit light based on the data signal, and by adjusting the brightness displayed by different pixel circuits, color superposition can realize the display of multiple colors. Figure 3 As shown, at the same time, there may be three display partitions A, B, and C with different refresh frequencies on the display panel 10. For example, the refresh frequencies of A, B, and C may be 1 Hz, 120 Hz, and 1 Hz, respectively.

[0047] The inventors of the present application discovered that when there are multiple display partitions with inconsistent refresh frequencies on a display panel, if the refresh frequency of a display partition with a higher frequency among the multiple display partitions is adjusted, it may cause the brightness of the display partition with a lower frequency among the multiple display partitions to change, causing the display partition with the lower frequency to flicker, thereby affecting the display effect of the display panel.

[0048] The embodiment of the present application provides a brightness compensation method for a display panel to at least partially solve the above problems, thereby optimizing the display effect of the display panel. The brightness compensation method provided by the embodiment of the present application is described in detail below.

[0049] like Figure 4 As shown, the brightness compensation method of the display panel includes:

[0050] S110 , determining a refresh frequency of a first display partition among multiple display partitions of a display panel; the first display partition is a display partition with the highest frequency among the multiple display partitions.

[0051] The refresh frequency of the first display partition determined in this step is the refresh frequency of the display partition with the highest refresh frequency in the display picture to be brightness compensated of the display panel. Exemplarily, after receiving a frequency adjustment instruction for adjusting the refresh frequency of the display partitions on the display panel, in response to the instruction, the display partition with the highest refresh frequency among the display partitions after the refresh frequency adjustment is determined as the first display partition, and the highest refresh frequency is recorded as the refresh frequency of the first display partition, so as to timely perform brightness compensation on the display panel.

[0052] S120. Determine, according to the refresh frequency of the first display subarea, a compensation parameter for compensating a control voltage of a pixel circuit in the display panel, wherein the control voltage is a voltage for controlling a switch unit of the pixel circuit to be turned on.

[0053] The pixel circuit in the display panel includes a pixel light-emitting unit that emits light, and a driving unit for driving the pixel light-emitting unit. The inventor of the present application has studied the above technical problem and found that the refresh frequency of the display partition is set by setting the conduction frequency of the driving unit of the pixel circuit in the display partition, but when the conduction frequencies of the driving units of the pixel circuits in two display partitions are different, the voltage initialization of the output end of the driving unit of the low-refresh display partition will still be synchronized with the voltage initialization of the output end of the driving unit of the high-refresh display partition. After the refresh frequency of the high-refresh display partition changes, the voltage initialization frequency of the output end of the driving unit of the low-refresh display partition will also change accordingly, which makes the number of times the potential of the output end of the driving unit of the low-refresh display partition changes in a display cycle of the low-refresh display partition before and after the refresh frequency of the high-refresh display partition changes, and the state of the driving unit of the low-refresh display partition also has corresponding differences, so that when the refresh frequencies of the high-refresh display partitions in multiple display partitions are different, different effects will be produced on the brightness of the low-refresh display partitions, so that when the refresh frequency of the display partition with a higher frequency among the multiple display partitions is adjusted, the display partition with a lower frequency among the multiple display partitions may produce brightness changes, causing the display partition with a lower frequency to flicker. In this regard, the inventors of the present application have further studied and found that the light emitting brightness of the pixel light emitting unit of the pixel circuit can be adjusted by adjusting the control voltage of the pixel circuit.

[0054] It should be understood that when the display panel includes multiple display partitions with different refresh frequencies, in addition to the first display partition, the multiple display partitions also include a second display partition with a refresh frequency different from that of the first display partition. Based on the above content, it can be known that when the refresh frequency of the first display partition is different, it will generally have different effects on the brightness of the second display partition, which makes the difference between the actual brightness of the second display partition and the reference brightness of the second display partition different when the refresh frequency of the first display partition is different. In the embodiment of the present application, the corresponding compensation parameter can be determined according to the influence of the refresh frequency of the first display partition on the brightness of the second display partition, so as to adjust the control voltage of the pixel circuit in the second display partition. Among them, the compensation parameter corresponding to the refresh frequency of the first display partition is the brightness change of the second display partition caused by adjusting the above-mentioned control voltage according to the compensation parameter, which can compensate for the brightness influence caused by the refresh frequency of the first display partition, so that the brightness of the second display partition is at its reference brightness. Compensation parameters.

[0055] In some optional embodiments, the switching unit includes a transistor, and the control voltage can act on the control terminal of the transistor in the switching unit, thereby controlling the conduction of the switching unit by controlling the conduction of the transistor, and adjusting the degree of conduction of the switching unit to a certain extent through the transistor.

[0056] S130 , adjusting the control voltage of the pixel circuit in at least the second display partition among the plurality of display partitions according to the compensation parameter.

[0057] After the compensation parameters are obtained, the control voltage of the pixel circuit in the second display partition can be adjusted. As a feasible implementation, when the control voltage of the pixel circuit in the second display partition is adjusted according to the compensation parameters, the control voltage of the pixel circuit in the first display partition can be adjusted synchronously according to the compensation parameters. Compared with only adjusting the control voltage of the pixel circuit in the second display partition, the pixel circuits in the first display partition and the second display partition can use the same control voltage, thereby simplifying the complexity of generating the control voltage.

[0058] In an embodiment of the present application, the refresh frequency of a first display partition among multiple display partitions of a display panel can be determined; the first display partition is the display partition with the highest frequency among the multiple display partitions; according to the refresh frequency of the first display partition, a compensation parameter for compensating for the control voltage of a pixel circuit in the display panel is determined, and according to the compensation parameter, at least the control voltage of a pixel circuit in a second display partition among the multiple display partitions is adjusted, so that when the refresh frequency of a display partition on the display panel is adjusted, the refresh frequency of the first display partition among the multiple display partitions after the refresh frequency adjustment can be determined, and the corresponding compensation parameter can be determined according to the refresh frequency of the first display partition, and the control voltage of the pixel circuit in the second display partition is adjusted by using the compensation parameter to adjust the brightness of the second display partition, thereby compensating for the brightness effect caused by the refresh frequency of the first display partition, so that the brightness of the second display partition is within the range of its reference brightness, and flickering of the second display partition with a lower frequency is avoided, thereby improving the display effect of the display panel.

[0059] As a feasible implementation, the refresh frequencies of all display partitions on the display panel can be determined. When the refresh frequencies of multiple display partitions on the display panel are the same, that is, when the first display partition does not exist, a given preset voltage can be determined as the control voltage corresponding to each display partition; wherein the value of the preset voltage is a fixed value. That is, when the refresh frequencies of each display partition in the display picture to be brightness compensated of the display panel are the same, the given preset voltage can be directly determined as the control voltage corresponding to each display partition, thereby improving the working efficiency of the display panel.

[0060] Therefore, in the implementation of the present application, in two cases, where there are display partitions with different refresh frequencies on the display panel, and where the refresh frequencies of multiple display partitions on the display panel are the same, two different methods can be used to determine the control voltage of the pixel circuit in the display partition on the display panel, so that the embodiments of the present application can be applicable to a variety of application scenarios, thereby improving the practicality of the embodiments of the present application.

[0061] In some optional embodiments, adjusting the control voltage of the pixel circuit in the second display partition according to the compensation parameter includes: adjusting the reference value of the control voltage of the second display partition according to the compensation parameter to obtain the adjusted control voltage. It should be understood that the control voltage of the second display partition is the control voltage of the pixel circuit in the second display partition.

[0062] As a feasible implementation method, when multiple display partitions include a first display partition and a second display partition with different refresh frequencies, and the brightness of the second display partition is different from the reference brightness, the control voltage of the second display partition is adjusted, and the display brightness of the second display partition is measured. When the display brightness of the second display partition is adjusted to the reference brightness, the adjustment amount of the control voltage of the second display partition is recorded, and the adjustment amount is determined as the compensation parameter corresponding to the current frequency of the first display partition and the initial voltage before the adjustment of the control voltage of the second display partition. Among them, the initial voltage of the second display partition before adjustment is different, and the adjustment amount of the control voltage of the second display partition will also change accordingly, but the sum of the initial voltage of the second display partition before adjustment and the adjustment amount remains unchanged, that is, the control voltage of the second display partition after adjustment remains unchanged. In the embodiment of the present application, the reference value of the control voltage of the second display partition can be used as the initial value for adjusting the control voltage of the second display partition above, and the adjustment amount of the control voltage of the second display partition obtained in this case is used as the compensation parameter, so that when the control voltage of the pixel circuit in the second display partition is adjusted according to the compensation parameter, the reference value of the control voltage of the second display partition can be directly adjusted according to the compensation parameter to obtain the adjusted control voltage.

[0063] In an embodiment of the present application, a reference value of the control voltage can be set, so that each time the control voltage of the second display partition is adjusted, the control voltage can be adjusted based on the reference value, without having to obtain the control voltage of the second display partition in real time, thereby reducing the complexity of the control voltage adjustment.

[0064] In some optional embodiments, compensation parameters corresponding to the second display partition are determined based on the refresh frequency of the first display partition, including: obtaining compensation parameter comparison information, the compensation parameter comparison information including the refresh frequency of the first display partition, and the compensation parameters corresponding to the refresh frequency of the first display partition; determining the compensation parameters based on the refresh frequency of the first display partition and the compensation parameter comparison information.

[0065] The compensation parameter comparison information may be a compensation parameter comparison table including the refresh frequency of the first display partition, the compensation parameter, and the corresponding relationship between the refresh frequency of the first display partition and the compensation parameter. When a refresh frequency of the first display partition is not included in the compensation parameter comparison table, the compensation parameter corresponding to the refresh frequency may be determined by interpolation based on the refresh frequency and the corresponding compensation parameter in the compensation parameter comparison table that are close to the refresh frequency. Of course, the compensation parameter comparison information may also be other suitable forms of information, such as a function curve obtained by fitting, etc., which will not be described in detail here.

[0066] The compensation parameter comparison table can be measured in advance through experiments. For example, multiple sample groups can be set, and the multiple display partitions of each sample group include a first display partition and a second display partition, and the refresh frequency of the first display partition of each sample group can be different, and the control voltage of the second display partition is the same reference value, so as to measure the adjustment amount required for the control voltage of the second display partition when the display brightness of the second display partition is adjusted to the reference brightness at various refresh frequencies of the first display partition, and determine the adjustment amount as the compensation parameter corresponding to the control voltage of the second display partition at the corresponding refresh frequency of the first display partition when the control voltage of the second display partition is the reference value, thereby obtaining a compensation information table. Exemplarily, the compensation information table can be shown in Table 1 below, and the adjusted control voltage obtained according to the compensation information table can be shown in Table 2 below.

[0067] Table 1:

[0068]

[0069] Table 2:

[0070]

[0071] When the compensation parameter is determined according to the compensation parameter comparison table, after the compensation parameter is determined, the reference value of the control voltage of the second display partition can be adjusted according to the compensation parameter to obtain the adjusted control voltage. Of course, the actual value of the control voltage of the second display partition can also be obtained, and the actual value of the control voltage can be subtracted from the sum of the compensation parameter and the control voltage reference value to obtain the compensation parameter for adjusting the actual value of the control voltage, so as to compensate the actual value of the control voltage according to the compensation parameter.

[0072] In the embodiment of the present application, the refresh frequency of the first display partition and the compensation parameter comparison information of the compensation parameter corresponding to the refresh frequency of the first display partition can be predetermined. When determining the compensation parameter corresponding to the second display partition, it is only necessary to obtain the compensation parameter comparison information, and the compensation parameter can be determined according to the refresh frequency of the first display partition and the compensation parameter comparison information. The calculation process is simple and convenient, and there is no need to repeat the process of determining the compensation parameter when determining the compensation parameter comparison information, which is conducive to improving the efficiency of determining the compensation parameter.

[0073] like Figure 3 As shown, in some optional embodiments, the multiple display partitions further include a third display partition C, and the refresh frequency of the third display partition C is the same as that of the second display partition A, thereby enriching the setting scheme of the display partitions on the display panel.

[0074] According to the compensation parameter, at least the control voltage of the pixel circuit in the second display partition C other than the first display partition B among the multiple display partitions is adjusted, including: according to the compensation parameter, at least the control voltage of the pixel circuit in the second display partition A and the control voltage of the pixel circuit in the third display partition C are adjusted. Thus, the brightness of the second display partition and the third display partition can be compensated at the same time to ensure the display effect of the display panel.

[0075] like Figure 3 As shown, in some optional embodiments, the first display partition B is located between the second display partition A and the third display partition C. By setting the first display partition B between the second display partition A and the third display partition C, the first display partition B can have substantially the same influence on the second display partition A and the third display partition C, so that according to the same supplementary parameter, the control voltage of the pixel circuit in the second display partition and the control voltage of the pixel circuit in the third display partition are adjusted to achieve similar effects, thereby ensuring the consistency of the brightness of the second display partition A and the third display partition C.

[0076] like Figure 5 and Figure 6As shown, in some optional embodiments, the pixel circuit 100 includes a driving unit 110 and a pixel light emitting unit 120, and the switch unit includes a data writing unit 130. The first end of the data writing unit 130 is connected to the data line ELVdata; the second end of the data writing unit 130 is connected to the first end of the driving unit 110, the first end of the driving unit 110 is connected to the first power line ELVDD, the second end of the driving unit 110 is connected to the first end of the pixel light emitting unit 120, and the second end of the pixel light emitting unit 120 is connected to the second power line ELVSS; the display cycle of the pixel circuit 100 includes a first time period. The display cycle of the pixel circuit 100 is a cycle in which the pixel circuit of the display panel performs a round of light emission when the display panel is displaying, and the display frequency corresponding to the display cycle of the pixel circuit 100 is the same as the refresh frequency of the display panel.

[0077] When the first power line ELVDD and the second power line ELVSS are connected, power can be supplied to the pixel light emitting unit 120. The pixel light emitting unit 120 is used to emit light and can be a suitable light emitting device suitable for OLED.

[0078] The brightness compensation method of the display panel may further include: according to the adjusted control voltage, controlling the data writing unit 130 in the second display partition to be turned on in the first time period so that the data line ELVdata writes the driving voltage for driving the driving unit 110 to the pixel circuit 100 in the second display partition.

[0079] like Figure 6As shown, the control end of the data writing unit 130 can be connected to the first scan line L1, and the first control signal is sent to the control end of the data writing unit 130 through the first scan line L1, so as to control the on and off of the data writing unit 130 with the first control signal. In the embodiment of the present application, the voltage of the first control signal when the first control signal controls the data writing unit 130 to be turned on is the control voltage, and adjusting the control voltage of the pixel circuit 100 in the second display partition according to the compensation parameter may include: adjusting the voltage of the first control signal for controlling the data writing unit 130 to be turned on in the second display partition according to the compensation parameter. According to the adjusted control voltage, controlling the data writing unit 130 in the second display partition to be turned on in the first time period may be realized by using the adjusted control voltage as the voltage of the first control signal for controlling the data writing unit 130 in the second display partition to be turned on, and controlling the data writing unit 130 to be turned on in the first time period, so that the data line ELVdata writes the driving voltage for driving the above-mentioned driving unit 110 to the pixel circuit 100. The inventors have found through experiments that by adjusting the voltage of the first control signal that controls the conduction of the data writing unit 130 in the second display partition, the brightness of the light emitted by the pixel light emitting unit 120 driven by the driving unit 110 in the second display partition can be adjusted. The specific experimental process can be carried out with reference to the following embodiments.

[0080] As a feasible implementation method, Figure 6 As shown, the driving unit 110 may include a first transistor T1, and the data writing unit 130 may include a second transistor T2. By way of example, the first transistor T1 and the second transistor T2 may be PMOS transistors or the like.

[0081] In an embodiment of the present application, the brightness compensation method may include controlling the data writing unit 130 in the second display partition to be turned on in a first time period according to an adjusted control voltage, so that the data line ELVdata writes a driving voltage for driving the driving unit 110 to the pixel circuit 100 in the second display partition, and can control the conduction state of the data writing unit 130 in the second display partition according to the adjusted control voltage to adjust the brightness of the second display partition and compensate for the brightness of the display panel.

[0082] like Figure 5 and Figure 6 As shown, in some optional embodiments, the switching unit also includes a first light-emitting control unit 141 and a second light-emitting control unit 142, the first end of the driving unit 110 is connected to the first power line ELVDD through the first light-emitting control unit 141, and the second end of the driving unit 110 is connected to the pixel light-emitting unit 120 through the second light-emitting control unit 142; the display cycle of the pixel circuit 100 also includes a second time period, and the second time period is after the first time period.

[0083] The brightness compensation method of the display panel may further include: controlling the first light emitting control unit 141 and the second light emitting control unit 142 in the second display partition to be turned on in the second time period according to the adjusted control voltage.

[0084] like Figure 6 As shown, the control end of the first light-emitting control unit 141 and the control end of the second light-emitting control unit 142 can be connected to the second scan line L2, and the second control signal is sent to the control end of the first light-emitting control unit 141 and the second light-emitting control unit 142 through the second scan line L2, so as to control the on and off of the data writing unit 130 with the second control signal. In the embodiment of the present application, when the second control signal controls the first light-emitting control unit 141 and the second light-emitting control unit 142 to be turned on, the voltage of the second control signal is the control voltage, and adjusting the control voltage of the pixel circuit 100 in the second display partition according to the compensation parameter may include: adjusting the voltage of the second control signal for controlling the first light-emitting control unit 141 and the second light-emitting control unit 142 to be turned on in the second display partition according to the compensation parameter. According to the adjusted control voltage, controlling the first light-emitting control unit 141 and the second light-emitting control unit 142 in the second display partition to be turned on in the second time period may be realized by using the adjusted control voltage as the voltage of the second control signal for controlling the first light-emitting control unit 141 and the second light-emitting control unit 142 in the second display partition to be turned on in the second time period. The inventor discovered through experiments that when the switch unit includes a first light-emitting control unit 141 and a second light-emitting control unit 142, by adjusting the voltage of a first control signal for controlling conduction of a data writing unit 130 in the second display partition, and the voltage of a second control signal for controlling conduction of the first light-emitting control unit 141 and the second light-emitting control unit 142 in the second display partition, the brightness of light emitted by the driving unit 110 driving the pixel light-emitting unit 120 in the second display partition can be adjusted. The specific experimental process can be carried out with reference to the following embodiments.

[0085] As a feasible implementation method, Figure 6 As shown, the first light emission control unit 141 may include a third transistor T3, and the second light emission control unit 142 may include a fourth transistor T4. The types of the third transistor T3 and the fourth transistor T4 may be the same as the second transistor T2.

[0086] In the embodiment of the present application, the switch unit may be configured to further include a first light emitting control unit 141 and a second light emitting control unit 142, the first end of the driving unit 110 is connected to the first power line ELVDD through the first light emitting control unit 141, and the second end of the driving unit 110 is connected to the pixel light emitting unit 120 through the second light emitting control unit 142. And the brightness compensation method includes controlling the first light emitting control unit 141 and the second light emitting control unit 142 in the second display partition to be turned on in the second time period according to the adjusted control voltage. On the one hand, the driving unit 110 may be powered on by the first light emitting control unit 141 and the second light emitting control unit 142, and on the other hand, the conduction state of the data writing unit 130 in the second display partition may be controlled according to the adjusted control voltage, and the conduction state of the first light emitting control unit 141 and the second light emitting control unit 142 in the second display partition may be controlled to adjust the brightness of the second display partition and compensate for the brightness of the display panel.

[0087] like Figure 5 and Figure 6 As shown, in some optional embodiments, the switching unit also includes a first initialization unit 151 and a second initialization unit 152; the first initialization unit 151 is connected to the second end of the driving unit 110, and the second initialization unit 152 is connected to the first end of the pixel light-emitting unit 120; the display cycle of the pixel circuit 100 also includes a third time period, and the third time period is between the first time period and the second time period.

[0088] The brightness compensation method of the display panel also includes: according to the adjusted control voltage, controlling the first initialization unit 151 and the second initialization unit 152 in the second display partition to be turned on in a third time period to reset the voltage at the second end of the driving unit 110 and the voltage at the first end of the pixel light emitting unit 120 in the second display partition.

[0089] like Figure 6 As shown, the control end of the first initialization unit 151 and the control end of the second initialization unit 152 can be connected to the third scan line L3, and a third control signal is sent to the control ends of the first initialization unit 151 and the second initialization unit 152 through the third scan line L3 to control the conduction and shutdown of the data writing unit 130.

[0090] In the embodiment of the present application, when the third control signal controls the first initialization unit 151 and the second initialization unit 152 to be turned on, the voltage of the third control signal is the control voltage, and adjusting the control voltage of the pixel circuit 100 in the second display partition according to the compensation parameter may include: adjusting the voltage of the third control signal for controlling the first initialization unit 151 and the second initialization unit 152 to be turned on in the second display partition according to the compensation parameter. According to the adjusted control voltage, controlling the first initialization unit 151 and the second initialization unit 152 in the second display partition to be turned on in the third time period may be implemented by using the adjusted control voltage as the voltage of the third control signal for controlling the first initialization unit 151 and the second initialization unit 152 in the second display partition to be turned on in the third time period. The inventor discovered through experiments that when the switch unit also includes a first initialization unit 151 and a second initialization unit 152, by adjusting the voltage of the first control signal that controls the data writing unit 130 in the second display partition to be turned on, the voltage of the second control signal that controls the first light-emitting control unit 141 and the second light-emitting control unit 142 in the second display partition to be turned on, and the voltage of the third control signal that controls the first initialization unit 151 and the second initialization unit 152 in the second display partition to be turned on, the brightness of the light emitted by the driving unit 110 driving the pixel light-emitting unit 120 in the second display partition can be adjusted. The main process of the inventor's experiment is as follows.

[0091] The display panel is set to include a first display partition with a refresh frequency of a first frequency, and a second display partition with a refresh frequency of a second frequency, and the first frequency is less than the second frequency. When other conditions except the refresh frequency are the same, the first display partition and the second display partition of the display panel are controlled to be displayed simultaneously, and it is found that there is a difference in brightness between the first display partition and the second display partition. After that, the control voltage in the second display partition is adjusted, that is, the voltage of the first control signal for controlling the conduction of the data writing unit 130 in the second display partition is adjusted, the voltage of the second control signal for controlling the conduction of the first light-emitting control unit 141 and the second light-emitting control unit 142 in the second display partition is adjusted, and the voltage of the third control signal for controlling the conduction of the first initialization unit 151 and the second initialization unit 152 in the second display partition is adjusted, etc. It is found that the brightness of the second display partition will change with the change of the control voltage, and the brightness of the second display partition can be adjusted to the reference brightness by adjusting the control voltage of the second display partition. Further, several sample groups with different first frequencies are set, and the first frequency and the second frequency of each sample group are: (120Hz, 1Hz), (60Hz, 1Hz), (30Hz, 1Hz), (10Hz, 1Hz), etc. By adjusting the control voltage of the second display subarea of ​​each sample group, when the brightness of the second display subarea is adjusted to the same reference brightness, there is a certain difference in the control voltage of the second display subarea of ​​each sample group, for example Figure 7 As shown, Figure 7 The code of each sample group is represented by its first frequency and second frequency. The above results show that by adjusting the control voltage in the second display partition, the brightness of the light emitting unit 120 driven by the driving unit 110 in the second display partition can be adjusted.

[0092] As a feasible implementation method, Figure 6 As shown, the first initialization unit 151 includes a fifth transistor T5, and the second initialization unit 152 may include a sixth transistor T6. The types of the fifth transistor T5 and the sixth transistor T6 may be the same as the second transistor T2. The control terminals of the fifth transistor T5 and the sixth transistor T6 may be connected to the third scan line L3, the first terminal of the fifth transistor T5 may be connected to the second terminal of the driving unit 110, and the second terminal of the fifth transistor T5 may be connected to the first reference voltage Vref1, and the first reference voltage Vref1 is used to reset the voltage of the second terminal of the driving unit 110. The control terminals of the sixth transistor T6 and the sixth transistor T6 may be connected to the third scan line L3, the first terminal of the sixth transistor T6 may be connected to the first terminal of the pixel light emitting unit 120, and the second terminal of the sixth transistor T6 may be connected to the second reference voltage Vref2, and the second reference voltage Vref2 is used to reset the voltage of the first terminal of the pixel light emitting unit 120. The setting method of the first reference voltage Vref1 and the first reference voltage Vref1 may refer to the relevant technology, which will not be repeated here.

[0093] In the embodiment of the present application, the switch unit may further include a first initialization unit 151 and a second initialization unit 152; the first initialization unit 151 is connected to the second end of the driving unit 110, and the second initialization unit 152 is connected to the first end of the pixel light emitting unit 120. And the brightness compensation method further includes controlling the first initialization unit 151 and the second initialization unit 152 in the second display partition to be turned on in the third time period according to the adjusted control voltage, so as to reset the voltage at the second end of the driving unit 110 and the voltage at the first end of the pixel light emitting unit 120 in the second display partition. On the one hand, the voltage at the second end of the driving unit 110 and the voltage at the first end of the pixel light emitting unit 120 can be reset by the first initialization unit 151 and the second initialization unit 152, so as to reduce the residual charge at the second end of the driving unit 110 and the first end of the pixel light emitting unit 120 after each light emission, and affect the light emission of the pixel light emitting unit 120. On the other hand, the brightness of the light emission of the pixel light emitting unit 120 driven by the driving unit 110 can be affected according to the adjusted control voltage, so as to realize the brightness compensation of the display panel.

[0094] In some optional embodiments, the transistor of the switch unit is a PMOS tube.

[0095] In the embodiment of the present application, the transistors in the data writing unit 130, the first light emitting control unit 141, the second light emitting control unit 142, the first initialization unit 151 and the second initialization unit 152 may be PMOS tubes, and illustratively, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5 and the sixth transistor T6 may be PMOS tubes. By setting the transistor of the switch unit to a PMOS tube, it is helpful to reduce the control voltage of the control transistor to be turned on, thereby facilitating the turning on of the switch unit.

[0096] like Figure 5 and Figure 6As a feasible implementation, the pixel circuit 100 may further include a holding unit 160, a refresh control unit 170 and a third initialization unit 153, wherein a first end of the holding unit 160 is connected to the first power line ELVDD, a second end of the holding unit 160 is respectively connected to the control end of the driving unit 110 and the first end of the refresh control unit 170, a first end of the refresh control unit 170 is respectively connected to the second end of the driving unit 110 and the third initialization unit 153, a control end of the refresh control unit 170 is connected to the fourth scan line L4, and the fourth scan line L4 is used to output a fourth control signal for controlling the on / off of the refresh control unit 170 to the control end of the refresh control unit 170, a control end of the third initialization unit 153 is connected to the fifth scan line L5, and the fifth scan line L5 is used to output a fifth control signal for controlling the on / off of the third initialization unit 153 to the control end of the third initialization unit 153.

[0097] like Figure 6 As shown, the holding unit 160 may include a holding capacitor C, the refresh control unit 170 may include a seventh transistor T7, the third initialization unit 153 may include an eighth transistor T8, and the seventh transistor T7 and the eighth transistor T8 may be NMOS transistors. The control end of the eighth transistor T8 is connected to the fifth scan line L5, the first end of the eighth transistor T8 is connected to the seventh transistor T7, and the second end of the eighth transistor T8 is connected to the third reference voltage Vref3, and the third reference voltage Vref3 is used to reset the voltage of the second end of the holding unit 160.

[0098] The display cycle of the pixel circuit 100 may further include a fourth time period, which is before the first time period. The data writing unit 130, the driving unit 110, the first light emitting control unit 141, the second light emitting control unit 142, the first initialization unit 151, and the second initialization unit 152 are turned off in the fourth time period, the refresh control unit 170 and the third initialization unit 153 may be turned on in the fourth time period, and the voltage at the second end of the holding unit 160 and the voltage at the control end of the driving unit 110 may be reset using the third reference voltage Vref3.

[0099] The data writing unit 130 and the refresh control unit 170 can be turned on in the first time period, and the first light emitting control unit 141, the second light emitting control unit 142, the first initialization unit 151, the second initialization unit 152 and the third initialization unit 153 can be turned off in the first time period to write the voltage provided by the data line ELVdata into the maintaining unit 160.

[0100] The first initialization unit 151 and the second initialization unit 152 can be turned on in the third time period, and the data writing unit 130, the refresh control unit 170, the first light-emitting control unit 141, the second light-emitting control unit 142 and the third initialization unit 153 can be turned off in the first time period, so that the voltage at the second end of the driving unit 110 is reset by the first initialization unit 151, and the voltage at the first end of the pixel light-emitting unit 120 is reset by the second initialization unit 152.

[0101] The first light emitting control unit 141 and the second light emitting control unit 142 can be turned on in the second time period, and the data writing unit 130, the refresh control unit 170, the first initialization unit 151, the second initialization unit 152 and the third initialization unit 153 can be turned off in the first time period, so that the driving unit 110 is powered on through the first light emitting control unit 141 and the second light emitting control unit 142, so that the driving unit 110 drives the pixel light emitting unit 120 to emit light.

[0102] like Figure 8 As shown, the embodiment of the present application further provides a brightness compensation device 800 for a display panel, comprising:

[0103] A refresh frequency determination module 810 is used to determine a refresh frequency of a first display partition among multiple display partitions of a display panel; the first display partition is a display partition with the highest frequency among the multiple display partitions;

[0104] A compensation parameter determination module 820, configured to determine a compensation parameter for compensating a control voltage of a pixel circuit 100 in a second display partition according to a refresh frequency of the first display partition, wherein the second display partition is a display partition having a refresh frequency lower than that of the first display partition among the plurality of display partitions, and the control voltage is a voltage for controlling a switch unit of the pixel circuit 100 to conduct, and the switch unit includes a transistor;

[0105] The compensation module 830 is used to adjust the control voltage of the pixel circuit 100 in the second display subarea according to the compensation parameter.

[0106] It should be noted that the brightness compensation device of the display panel provided in the embodiment of the present application and the embodiment of the brightness compensation method of the display panel described above are based on the same inventive concept and can achieve the same effect. The specific implementation process can be found in the description in the embodiment of the brightness compensation method of the display panel described above, and will not be repeated here.

[0107] The present application also provides a display device. Fig. 9 , shows a schematic diagram of the structure of a display device according to an embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the display device.

[0108] like Fig. 9 As shown, the display device may include: a display panel, a processor (processor) 902 , a communication interface (Communications Interface) 904 , a memory (memory) 906 , and a communication bus 908 .

[0109] in:

[0110] The display panel, the processor 902 , the communication interface 904 , and the memory 906 communicate with each other via a communication bus 908 .

[0111] The communication interface 904 is used to communicate with other electronic devices or servers.

[0112] The processor 902 is used to execute at least one computer software 910, and specifically can execute the relevant steps in the embodiment of the brightness compensation method of the display panel.

[0113] The processor 902 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.

[0114] The memory 906 is used to store at least one computer software 910. The memory 906 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0115] The computer software 910 may include multiple computer instructions. The computer software 910 may specifically enable the processor 902 to perform operations corresponding to the brightness compensation method of the display panel described in any of the aforementioned multiple method embodiments through multiple computer instructions. The specific implementation of each step in the computer software 910 can refer to the corresponding descriptions in the corresponding steps and units in the aforementioned method embodiments, and has corresponding beneficial effects, 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.

[0116] The present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the method described in any of the above-mentioned multiple method embodiments is implemented. The storage medium includes, but is not limited to: a compact disc read-only memory (CD-ROM), a random access memory (RAM), a floppy disk, a hard disk, or a magneto-optical disk.

[0117] An embodiment of the present application also provides a computer program product, including computer instructions, which instruct a computing device to execute operations corresponding to the method described in any one of the aforementioned multiple method embodiments.

[0118] 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.

[0119] 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 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 dedicated processor or programmable or dedicated hardware (such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA)). It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component (e.g., a random access memory (RAM), a read-only memory (ROM), a 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 dedicated computer for executing the method shown here.

[0120] 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 each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0121] 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 brightness compensation method for a display panel, characterized in that: include: Determining a refresh frequency of a first display partition among a plurality of display partitions of the display panel; The first display partition is the display partition with the highest frequency among the multiple display partitions; Determining, according to the refresh frequency of the first display partition, a compensation parameter for compensating a control voltage of a pixel circuit in the display panel, wherein the control voltage is a voltage for controlling a switch unit of the pixel circuit to be turned on; According to the compensation parameter, at least a control voltage of a pixel circuit in a second display partition among the plurality of display partitions is adjusted.

2. The method according to claim 1, characterized in that The determining, according to the refresh frequency of the first display partition, the compensation parameter corresponding to the second display partition includes: Acquire compensation parameter comparison information, where the compensation parameter comparison information includes a refresh frequency of the first display partition and the compensation parameter corresponding to the refresh frequency of the first display partition; Determine the compensation parameter according to the refresh frequency of the first display partition and the compensation parameter comparison information; Preferably, adjusting the control voltage of the pixel circuit in the second display subarea according to the compensation parameter includes: The reference value of the control voltage of the second display subarea is adjusted according to the compensation parameter to obtain the adjusted control voltage.

3. The method according to claim 1, characterized in that The switch unit includes a transistor; Preferably, the transistor is a PMOS transistor.

4. The method according to claim 1, characterized in that: The plurality of display partitions further include a third display partition, and the refresh frequency of the third display partition is the same as that of the second display partition; The step of adjusting, according to the compensation parameter, at least a control voltage of a pixel circuit in a second display partition other than the first display partition among the plurality of display partitions comprises: According to the compensation parameter, at least a control voltage of a pixel circuit in the second display subarea and a control voltage of a pixel circuit in the third display subarea are adjusted; Preferably, the first display partition is located between the second display partition and the third display partition.

5. The method according to any one of claims 1 to 4, characterized in that The pixel circuit further includes a driving unit and a pixel light emitting unit, and the switch unit includes a data writing unit; The first end of the data writing unit is connected to the data line; the second end of the data writing unit is connected to the first end of the driving unit, the first end of the driving unit is connected to the first power line, the second end of the driving unit is connected to the first end of the pixel light emitting unit, and the second end of the pixel light emitting unit is connected to the second power line; The display cycle of the pixel circuit includes a first time period; The method further comprises: According to the adjusted control voltage, the data writing unit in the second display partition is controlled to be turned on in the first time period, so that the data line writes the driving voltage for driving the driving unit to the pixel circuit in the second display partition.

6. The method according to claim 5, characterized in that The switch unit further includes a first light-emitting control unit and a second light-emitting control unit, the first end of the driving unit is connected to the first power line through the first light-emitting control unit, and the second end of the driving unit is connected to the pixel light-emitting unit through the second light-emitting control unit; the display cycle of the pixel circuit further includes a second time period, and the second time period is after the first time period; The method further comprises: According to the adjusted control voltage, the first light emitting control unit and the second light emitting control unit in the second display subarea are controlled to be turned on in the second time period.

7. The method according to claim 6, characterized in that The switch unit further includes a first initialization unit and a second initialization unit; the first initialization unit is connected to the second end of the driving unit, and the second initialization unit is connected to the first end of the pixel light emitting unit; the display cycle of the pixel circuit further includes a third time period, and the third time period is between the first time period and the second time period; The method further includes: according to the adjusted control voltage, controlling the first initialization unit and the second initialization unit in the second display partition to be turned on in a third time period to reset the voltage at the second end of the driving unit and the voltage at the first end of the pixel light emitting unit in the second display partition.

8. A brightness compensation device for a display panel, characterized in that: include: A refresh frequency determination module, used to determine a refresh frequency of a first display partition among a plurality of display partitions of the display panel; The first display partition is the display partition with the highest frequency among the multiple display partitions; a compensation parameter determination module, configured to determine, according to a refresh frequency of the first display partition, a compensation parameter for compensating a control voltage of a pixel circuit in a second display partition, wherein the second display partition is a display partition having a refresh frequency lower than that of the first display partition among the plurality of display partitions, and the control voltage is a voltage for controlling a switch unit of the pixel circuit to conduct, wherein the switch unit includes a transistor; A compensation module is used to adjust the control voltage of the pixel circuit in the second display subarea according to the compensation parameter.

9. A display device, comprising: A display panel, a processor, a memory, a communication interface and a communication bus, wherein the display panel, 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 computer software, and the computer software enables the processor to execute the method according to any one of claims 1-7.

10. A computer storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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