Display apparatus and adjustment method therefor, and adjustment device and computer storage medium

Abstract

The present application belongs to the technical field of display. Disclosed are a display apparatus and an adjustment method therefor, and an adjustment device and a computer storage medium. The display apparatus comprises: a control panel to be subjected to compensation and a control component. The control component can drive said display panel under a target driving parameter, acquire a first sensing value of a light-emitting unit by means of a sensing unit, obtain, on the basis of the first sensing value, the target driving parameter and a lookup table, a first voltage value corresponding to the first sensing value and a second voltage value corresponding to the target driving parameter, obtain, on the basis of the difference between the first voltage value and the second voltage value, a compensation voltage value corresponding to the first sensing value, and then write, by means of a compensation unit, the compensation voltage value corresponding to the first sensing value into an anode of the light-emitting unit. In this way, the magnitude of the value of a current flowing through a light-emitting unit can be adjusted on the basis of the magnitude of a compensation voltage value, so as to perform brightness compensation on the light-emitting unit, so that the brightness of a display panel to be subjected to compensation reaches the design brightness.

Description

Display device, adjustment method thereof, adjustment equipment, and computer storage medium Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and an adjustment method thereof, an adjustment device, and a computer storage medium. Background Art

[0002] Organic light emitting diode (OLED) display panels have good color saturation, contrast, and response speed.

[0003] A display device includes a display panel and a control component. The control component can drive the display panel under set driving parameters to light up light-emitting units in the display panel so that the display panel reaches a designed brightness.

[0004] However, the display panels in the above-mentioned display devices have process fluctuations during the production process, resulting in poor display effects of some display panels.

[0005] Summary of the Invention

[0006] The present invention provides a display device and its adjustment method, adjustment device, and computer storage medium. The technical solution is as follows:

[0007] According to one aspect of the present application, a display device is provided, comprising a display panel and a control component, wherein the display panel to be compensated comprises a pixel circuit and a light-emitting unit, the pixel circuit comprises a sensing unit and a compensation unit, the sensing unit and the compensation unit are both electrically connected to the light-emitting unit, and the control component is electrically connected to the sensing unit and the compensation unit, respectively;

[0008] The control component is used to drive the display panel to be compensated under target driving parameters, and obtain a first sensing value of the light-emitting unit through the sensing unit;

[0009] The control component is further configured to obtain a first voltage value corresponding to the first sensing value based on the first sensing value and a lookup table, obtain a second voltage value corresponding to the target driving parameter based on the target driving parameter and the lookup table, and obtain a compensation voltage value corresponding to the first sensing value based on a difference between the first voltage value and the second voltage value;

[0010] The control component is further configured to write a compensation voltage value corresponding to the first sensing value into the anode of the light-emitting unit through the compensation unit.

[0011] Optionally, the first sensed value is a current value flowing through the light emitting unit;

[0012] The control component is further configured to: obtain a second sensing value based on the first sensing value, where the second sensing value is a sensing value having the smallest difference with the first sensing value among the plurality of sensing values ​​stored in the lookup table;

[0013] The first voltage value corresponding to the second sensing value is obtained in the lookup table.

[0014] Optionally, the display device further includes a comparison circuit, and the control component is further configured to obtain a sensing value in the data group corresponding to the target driving parameter in the lookup table, use the sensing value as a third sensing value, and transmit the third sensing value to the comparison circuit;

[0015] The comparison circuit is used to monitor the first sensing value of the light-emitting unit, and when it is monitored that the absolute value of the difference between the first sensing value and the third sensing value of the light-emitting unit reaches a first preset difference, it sends an indication signal to the control component to instruct the control component to obtain the compensation voltage value of the light-emitting unit based on the lookup table.

[0016] Optionally, a ratio of the first preset difference to the third sensing value ranges from 5% to 15%.

[0017] Optionally, the lookup table is stored in the control component, and the lookup table includes multiple data groups and multiple groups of driving parameters corresponding to the multiple data groups. The target driving parameter is any one of the multiple groups of driving parameters. Each of the data groups includes a sensing value and a voltage value corresponding to the sensing value. The sensing value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The standard display panel is a display panel that can achieve the designed brightness under the multiple groups of driving parameters.

[0018] Optionally, the lookup table further includes a plurality of design brightnesses corresponding one-to-one to the plurality of groups of driving parameters, the display device further includes a display panel to be tested, and the control component is further configured to:

[0019] driving the plurality of display panels to be tested under the target driving parameters, and obtaining a design brightness corresponding to the target driving parameters based on the target driving parameters and the lookup table;

[0020] receiving a display signal provided by the camera assembly, wherein the display signal is a plurality of brightness values ​​corresponding to a plurality of light-emitting units of the display panel to be tested, obtained by the camera assembly, and the camera assembly is used to detect the plurality of display panels to be tested to obtain the display signal;

[0021] When the absolute values ​​of the differences between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness are all less than or equal to a second preset difference, the display panel to be tested is determined to be the standard display panel.

[0022] Optionally, a ratio of the second preset difference to the maximum brightness among the multiple design brightnesses ranges from 8% to 12%.

[0023] Optionally, the sensing values ​​in the lookup table are obtained based on current values ​​of a plurality of light-emitting units in N standard display panels;

[0024] Wherein, N is an integer greater than or equal to 5.

[0025] Optionally, the sensed value in the lookup table is an average of current values ​​of a plurality of light-emitting units in the N standard display panels.

[0026] Optionally, the display device includes a gate driving circuit, and the gate driving circuit is electrically connected to the control component and the pixel circuit respectively;

[0027] The gate drive circuit includes a light-emitting signal terminal, the sensing unit includes a sensing transistor, the sensing transistor includes a control terminal, a first electrode, and a second electrode, the control terminal of the sensing transistor is electrically connected to the light-emitting signal terminal, the first electrode of the sensing transistor is electrically connected to the anode of the light-emitting unit, the second electrode of the sensing transistor is electrically connected to the control component, and the control component obtains the first sensing value based on the signal output by the second electrode of the sensing transistor.

[0028] Optionally, the end is electrically connected to the gate drive signal end, the first electrode of the first compensation transistor is electrically connected to the control component, the second electrode of the first compensation transistor is electrically connected to the anode of the light-emitting unit, and the second electrode of the first compensation transistor is used to output the compensation voltage value to the anode of the light-emitting unit.

[0029] Optionally, the display device further includes a power supply circuit, the power supply circuit includes a first reference signal terminal, and the first electrode of the first compensation transistor is also electrically connected to the first reference signal terminal.

[0030] Optionally, the display device further includes a source driving circuit, the source driving circuit includes a data signal terminal, and the power supply circuit further includes a first voltage output terminal;

[0031] The pixel circuit further includes: a data writing module, a storage module, a driving module, a light emitting control module, a first node, a second node and a third node;

[0032] The data writing module is connected to the gate driving signal terminal, the data signal terminal and the second node respectively, and is used to provide the data signal from the data signal terminal to the second node under the control of the gate driving signal from the gate driving signal terminal;

[0033] The storage module is connected to the first node and the second node respectively, and is used to control the potential of the first node to change synchronously with the potential of the second node;

[0034] The driving module is connected to the first node, the second node and the third node respectively, and is used to provide the first power signal from the first voltage output terminal to the third node under the control of the signal of the first node;

[0035] The light control module is connected to the light signal terminal, the third node and the light unit respectively, and is used to provide the light module with a signal from the third node under the control of the light control signal from the light signal terminal.

[0036] Optionally, the first electrode of the sensing transistor is further electrically connected to the second electrode of the first compensation transistor;

[0037] Alternatively, the first electrode of the sensing transistor is further electrically connected to the second node;

[0038] Alternatively, the first electrode of the sensing transistor is further electrically connected to the third node.

[0039] According to another aspect of the present application, a display device adjustment method is provided for a display device, the display device including a display panel to be compensated and a control component, the display panel to be compensated including a pixel circuit and a light-emitting unit, the pixel circuit including a sensing unit and a compensation unit, the sensing unit and the compensation unit both being electrically connected to the light-emitting unit, the control component being electrically connected to the sensing unit and the compensation unit, respectively, the method comprising:

[0040] driving the display panel to be compensated under target driving parameters, and obtaining a first sensing value of the light-emitting unit through the sensing unit, where the first sensing value is a current value flowing through the light-emitting unit;

[0041] Based on the first sensing value and a lookup table, obtaining a first voltage value corresponding to the first sensing value;

[0042] Based on the target driving parameter and the lookup table, obtaining a second voltage value corresponding to the target driving parameter;

[0043] Obtaining a compensation voltage value corresponding to the first sensing value according to a difference between the first voltage value and the second voltage value;

[0044] The compensation voltage value corresponding to the first sensing value is written into the anode of the light emitting unit through the compensation unit.

[0045] Optionally, obtaining a first voltage value corresponding to the first sensing value based on the first sensing value and a lookup table includes:

[0046] Acquire a second sensing value based on the first sensing value, where the second sensing value is a sensing value having the smallest difference with the first sensing value among the plurality of sensing values ​​stored in the lookup table;

[0047] The first voltage value corresponding to the second sensing value is obtained in the lookup table.

[0048] Optionally, the lookup table is stored in the control component, and the lookup table includes multiple data groups, each of the data group includes a sensing value and a voltage value corresponding to the sensing value, the sensing value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The multiple data groups correspond one-to-one to multiple sets of driving parameters for driving the standard display panel, and the standard display panel is a display panel that can achieve the designed brightness under the multiple sets of driving parameters.

[0049] Optionally, the lookup table further includes a plurality of design brightnesses corresponding one-to-one to the plurality of sets of driving parameters. Before driving the display panel to be compensated under the target driving parameters, the method further includes:

[0050] Obtain multiple display panels to be tested;

[0051] driving the plurality of display panels to be tested under the target driving parameters, and obtaining a design brightness corresponding to the target driving parameters based on the target driving parameters and the lookup table;

[0052] receiving a display signal provided by the camera assembly, wherein the display signal is a plurality of brightness values ​​corresponding to a plurality of light-emitting units of the display panel to be tested, obtained by the camera assembly, and the camera assembly is used to detect the plurality of display panels to be tested to obtain the display signal;

[0053] When the absolute values ​​of the differences between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness are all less than or equal to a second preset difference, the display panel to be tested is determined to be the standard display panel.

[0054] According to another aspect of the present application, an adjustment device for a display device is provided, wherein the adjustment device for the display panel includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the adjustment method for the display device as described above.

[0055] According to another aspect of the present application, a computer storage medium is provided, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the adjustment method of the display device as described above.

[0056] According to another aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the display device adjustment method described above.

[0057] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0058] A display device is provided, comprising a display panel to be compensated and a control component. The control component is capable of driving the display panel to be compensated under target drive parameters, obtaining a first sensed value of a light-emitting unit via a sensing unit, obtaining a first voltage value corresponding to the first sensed value and a second voltage value corresponding to the target drive parameter based on the first sensed value, the target drive parameter, and a lookup table, obtaining a compensation voltage value corresponding to the first sensed value based on the difference between the first voltage value and the second voltage value, and then writing the compensation voltage value corresponding to the first sensed value to the anode of the light-emitting unit via the compensation unit. In this manner, the magnitude of the current flowing through the light-emitting unit can be adjusted according to the magnitude of the compensation voltage value to compensate for the brightness of the light-emitting unit, so that the brightness of the display panel to be compensated reaches the designed brightness. This can solve the problem of poor display quality of display panels in related technologies and improve the display quality of the display panel in the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0060] FIG1 is a schematic structural diagram of a display device provided in an embodiment of the present application;

[0061] FIG2 is a schematic diagram of brightness of a display panel to be compensated provided in an embodiment of the present application;

[0062] 3 is a schematic diagram of first sensing values ​​corresponding to the light-emitting units in the display panel to be compensated shown in FIG. 2 ;

[0063] FIG4 is a schematic structural diagram of another display device provided in an embodiment of the present application;

[0064] FIG5 is a schematic structural diagram of a display device in the related art;

[0065] FIG6 is a schematic structural diagram of another pixel circuit provided in an embodiment of the present application;

[0066] FIG7 is a timing diagram of the driving circuit shown in FIG6 ;

[0067] FIG8 is a schematic structural diagram of a pixel circuit in the related art;

[0068] FIG9 is a schematic structural diagram of another pixel circuit provided in an embodiment of the present application;

[0069] FIG10 is a schematic structural diagram of another pixel circuit provided in an embodiment of the present application;

[0070] FIG11 is a diagram showing the relationship between the single-color brightness and the driving current of the green light-emitting unit G, the red light-emitting unit R, and the blue light-emitting unit B;

[0071] FIG12 is a diagram showing the relationship between the voltage and the driving current of the green light emitting unit G, the red light emitting unit R, and the blue light emitting unit B;

[0072] FIG13 is a diagram showing the relationship between the brightness of the green light emitting unit G, the red light emitting unit R, and the blue light emitting unit B and the brightness of the pure white image W;

[0073] FIG14 is a diagram showing the relationship between the driving current of the green light emitting unit G, the red light emitting unit R, and the blue light emitting unit B and the driving current of the pure white W screen;

[0074] Figure 15 is a graph showing the relationship between the brightness of a pure white W image and current changes;

[0075] FIG16 is a diagram showing the relationship between the ELVSS voltage of the light-emitting unit and the brightness change of the pure white W screen;

[0076] FIG17 is a flow chart of a method for adjusting a display device provided in an embodiment of the present application;

[0077] FIG18 is a flow chart of another method for adjusting a display device provided in an embodiment of the present application;

[0078] FIG19 is a schematic structural diagram of a display adjustment device provided in an embodiment of the present application.

[0079] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0080] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0081] 1 , a display device 10 may include a display panel 11 to be compensated and a control component 12 .

[0082] The display panel 11 to be compensated includes a pixel circuit 111 and a light emitting unit 112. The pixel circuit 111 includes a sensing unit 1111 and a compensation unit 1112. Both the sensing unit 1111 and the compensation unit 1112 are electrically connected to the light emitting unit 112. The control component 12 is electrically connected to the sensing unit 1111 and the compensation unit 1112 respectively.

[0083] The control component 12 is configured to drive the display panel 11 to be compensated under target driving parameters, and obtain a first sensing value of the light-emitting unit 112 through the sensing unit 1111. The first sensing value may be a current value flowing through the light-emitting unit 112. The control component 12 is further configured to obtain a first voltage value corresponding to the first sensing value based on the first sensing value and a lookup table (LUT), obtain a second voltage value corresponding to the target driving parameters based on the target driving parameters and the LUT, and obtain a compensation voltage value corresponding to the first sensing value based on the difference between the first voltage value and the second voltage value.

[0084] The control component 12 is further configured to write a compensation voltage value into the anode of the light-emitting unit 112 via the compensation unit 1112. In this way, the current flowing through the light-emitting unit 112 can be adjusted according to the compensation voltage value to compensate or adjust the brightness of the light-emitting unit 112 so that the brightness of the light-emitting unit 112 reaches the designed brightness.

[0085] In summary, embodiments of the present application provide a display device comprising a display panel to be compensated and a control component. The control component is capable of driving the display panel to be compensated under target drive parameters, obtaining a first sensed value of a light-emitting unit through a sensing unit, obtaining a first voltage value corresponding to the first sensed value and a second voltage value corresponding to the target drive parameter based on the first sensed value, the target drive parameter, and a lookup table, obtaining a compensation voltage value corresponding to the first sensed value based on the difference between the first voltage value and the second voltage value, and then writing the compensation voltage value corresponding to the first sensed value to the anode of the light-emitting unit through the compensation unit. In this manner, the magnitude of the current flowing through the light-emitting unit can be adjusted according to the magnitude of the compensation voltage value to compensate for the brightness of the light-emitting unit, so that the brightness of the display panel to be compensated reaches the designed brightness. This can solve the problem of poor display quality of display panels in related technologies and improve the display quality of the display panel in the display device.

[0086] It will be understood that in the embodiments of the present application, when the compensation unit 1112 writes the compensation voltage into the anode of the light-emitting unit 112, it means that the anode of the light-emitting unit 112 is charged according to the voltage value of the compensation voltage so that the anode voltage value of the light-emitting unit 112 reaches a target voltage value, which may be the sum of the anode voltage value of the light-emitting unit 112 and the compensation voltage value. For example, if the anode voltage value of the light-emitting unit 112 is 3.0V and the compensation voltage value is 0.2V, the target voltage value of the anode of the light-emitting unit 112 after compensation is 3.2V; if the anode voltage value of the light-emitting unit 112 is 3.0V and the compensation voltage value is -0.2V, the target voltage value of the anode of the light-emitting unit 112 after compensation is 2.8V.

[0087] In an optional embodiment, the lookup table is stored in the control component 12, and the lookup table includes multiple data groups and multiple groups of driving parameters corresponding to the multiple data groups. The multiple data groups can correspond one-to-one to the multiple groups of driving parameters. The target driving parameter is any one of the multiple groups of driving parameters. Each data group includes a sensed value and a voltage value corresponding to the sensed value. The sensed value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The standard display panel is a display panel that can achieve the designed brightness under multiple groups of driving parameters. Exemplarily, the standard display panel is a display panel that can achieve the designed brightness under multiple groups of driving parameters as determined by optical testing. Optical testing refers to testing the produced display panel to be tested by optical testing equipment to determine whether the display panel to be tested can achieve the corresponding designed brightness under the set driving parameters. The testing equipment used in the optical test may include a charge-coupled device (CCD) visual detection equipment, which may also be referred to as a CCD detection equipment. The CCD detection device includes an image sensor, which can collect the light emitted by the display panel to be tested, and convert the collected light into an electric charge, and then convert the electric charge into a digital signal to form a digital image. The CCD detection device processes the acquired digital image through an image processing algorithm, including denoising, filtering, enhancement, etc., to optimize image quality so that the image is more suitable for subsequent detection tasks. After image processing, the CCD detection device can extract feature information in the image, such as color, shape, size, etc., according to the detection task. Exemplary, the detection task can be the brightness of the display panel to be tested. The CCD detection device can use the feature information to detect and determine whether the brightness of the display panel to be tested meets a predetermined standard (i.e., design brightness).

[0088] The display panel to be tested can be tested multiple times by a CCD detection device to determine whether the display panel to be tested is a standard display panel, and the multiple tests include testing the display panel to be tested at multiple different brightnesses. Since the display panel to be tested can be driven by different driving parameters, different brightnesses can be displayed on the display panel to be tested. That is, multiple groups of driving parameters can be stored in the control component, and the driving parameters can include the set value of at least one of the multiple signals such as the timing signal, data signal and driving power signal for driving the pixel circuit in the display panel to be tested. Exemplarily, in one group of driving parameters, the set value of the driving power signal (ELVDD) is 4.6V. In the design process of the display panel to be tested, multiple groups of driving parameters can correspond one to one with multiple brightnesses of the display panel to be tested. If it is determined through optical testing that the display panel to be tested can reach the corresponding design brightness under multiple groups of driving parameters, it can be determined that the display panel to be tested is a standard display panel.

[0089] It should be noted that the display panel to be compensated, the display panel to be tested, and the standard display panel in the embodiment of the present application may be display panels with the same structure and may be display panels manufactured by the same batch production process.

[0090] The control component includes a control chip (English: integrated circuit; abbreviated: IC), and the lookup table can be stored in a random access memory (English: Random Access Memory; abbreviated: RAM) of the control chip, or can be stored in a read-only memory (English: Read-Only Memory; abbreviated: ROM) of the control chip.

[0091] In an optional embodiment, the control component is also used to: obtain a second sensing value based on the first sensing value, the second sensing value being the sensing value with the smallest difference from the first sensing value among the multiple sensing values ​​stored in the lookup table; and obtain a first voltage value corresponding to the second sensing value in the lookup table.

[0092] That is, a set of target driving parameters can be determined from multiple sets of driving parameters, and the target driving parameters can be any set of driving parameters from the multiple sets of driving parameters, or the multiple sets of target parameters can be sorted from small to large according to the brightness of multiple design brightnesses corresponding to the multiple sets of target parameters, and the median of the sorted multiple sets of target parameters is used as the target driving parameter, and the display panel to be compensated is driven according to the target driving parameter.

[0093] It can be understood that the multiple data groups in the lookup table include a data group corresponding to the target driving parameters. The sensing values ​​and voltage values ​​in this data group are obtained by driving the standard display panel through the target driving parameters, and the current value of the light-emitting unit and the cathode voltage value of the light-emitting unit in the standard display panel are obtained.

[0094] When the display panel to be compensated is driven according to the target driving parameters, if the first sensing value obtained by the sensing unit is slightly different from the sensing value of the standard display panel in the lookup table, or the second sensing value corresponding to the first sensing value is the sensing value of the standard display panel, the display panel to be compensated is a standard display panel.

[0095] If the first sensing value obtained by the sensing unit is significantly different from the sensing value of the standard display panel in the lookup table, or the second sensing value corresponding to the first sensing value is not the sensing value of the standard display panel, the compensation unit can be used to compensate the display panel to be compensated.

[0096] For example, please refer to Table 1, which is a lookup table provided in an embodiment of the present application. The voltage value in the lookup table can be the cathode voltage value of the light-emitting unit in the standard display panel, which can be called the low-level power supply voltage value (ELVSS), and the unit is volt (V). The sensing value in the lookup table is the current value of the light-emitting unit in the standard display panel, and the unit is milliampere (mA). The larger the current value, the greater the brightness of the light-emitting unit. The unit of design brightness is nit (nit). It should be noted that the data in Table 1 is only used to exemplify the relationship between voltage values, sensing values, driving parameters and design brightness, and does not represent the actual measurement data of the display panel in the embodiment of the present application.

[0097] Table 1

[0098] In an exemplary embodiment, as shown in Table 1, the driving parameter 5 is determined as the target driving parameter, the voltage value in the data group corresponding to the target driving parameter is 5V, the sensing value is 0.5mA, and the design brightness corresponding to the target driving parameter is 500nit.

[0099] The display panel to be compensated is driven according to the target drive parameters. The sensing unit obtains a first sensing value of 0.29 mA, and a second sensing value corresponding to the first sensing value is obtained from the lookup table as 0.3 mA. A voltage value corresponding to the second sensing value is obtained as -3 V, and this voltage value is used as the first voltage value (-3 V). A voltage value of -5 V is obtained from the lookup table from the data set corresponding to the target drive parameter (drive parameter 5), and this voltage value is used as the second voltage value (-5 V). Based on the difference between the first voltage value (-3 V) and the second voltage value (-5 V), a compensation voltage value of 2 V is obtained.

[0100] It is understood that, since the greater the voltage difference between the anode voltage of a light-emitting unit and the cathode voltage of the light-emitting unit, the greater the current flowing through the light-emitting unit and the greater the brightness of the light-emitting unit; therefore, when the display panel to be compensated is driven using the target driving parameters, if the brightness of the display panel to be compensated does not reach the designed brightness, the anode voltage of the light-emitting unit in the display panel to be compensated can be compensated to increase the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit, thereby increasing the brightness of the light-emitting unit and, in turn, increasing the brightness of the display panel to be compensated. For example, when the display panel to be compensated is driven using the target parameters, the anode voltage of the light-emitting unit is 1V, and the cathode voltage of the light-emitting unit is -3V according to the first sensed value and the lookup table, the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit is 4V. When the standard display panel is driven using the target parameters, the anode voltage of the light-emitting unit is 1V, and the cathode voltage of the light-emitting unit is -5V according to the lookup table, the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit is 6V. The compensation unit can be used to compensate the light-emitting units in the display panel to be compensated. The compensation voltage value is 2V. That is, the anode voltage of the light-emitting unit can be compensated from 1V to 3V. At this time, the cathode voltage of the light-emitting unit is -3V, and the voltage difference between the anode voltage and the cathode voltage of the light-emitting unit is 6V. In this way, the brightness of the light-emitting units on the display panel to be compensated can reach the designed brightness.

[0101] In an optional embodiment, the control component further includes a Hall effect device, and the first sensed value can be read through the Hall effect device. The Hall effect (English: Hall effect) refers to the phenomenon that when a solid conductor is placed in a magnetic field and a current flows through it, the charge carriers in the conductor are deflected to one side by the Lorentz force, thereby generating a voltage (Hall voltage).

[0102] In an optional embodiment, the display device may further include a comparison circuit electrically connected to the control component. The control component is further configured to obtain a sensed value in a data set corresponding to the target driving parameter from a lookup table, use the sensed value in the data set as a third sensed value, and transmit the third sensed value to the comparison circuit. The comparison circuit may be integrated into the control component.

[0103] The comparison circuit is used to monitor the first sensing value of the light-emitting unit, and when it is monitored that the absolute value of the difference between the first sensing value and the third sensing value of the light-emitting unit reaches a first preset difference, it sends an indication signal to the control component to instruct the control component to obtain the compensation voltage value of the light-emitting unit based on the lookup table.

[0104] If the difference between the first and third sensing values ​​corresponding to a light-emitting unit is less than a first predetermined difference, the difference between the achievable brightness of the light-emitting unit and the designed brightness is small, and therefore no compensation is required for the light-emitting unit, thereby reducing the computational complexity of the control unit. Alternatively, the compensation voltage value for the light-emitting unit can be defaulted to 0V to conserve random access memory (RAM) space in the control unit.

[0105] If the difference between the first sensing value and the third sensing value corresponding to the light-emitting unit is greater than or equal to the first preset difference, it means that the brightness that the light-emitting unit can achieve is significantly different from the designed brightness, and the control component needs to compensate the light-emitting unit according to the first sensing value and the lookup table.

[0106] Optionally, the ratio of the first preset difference to the third sensing value ranges from 5% to 15%.

[0107] For example, referring to Figures 2 and 3 , the display panel 11 to be compensated includes m rows and n columns of light-emitting units 112. The control component can obtain a first sensing value for each light-emitting unit 112 via multiple sensing units. Pix. 1.1 in Figure 3 represents the first sensing value corresponding to the light-emitting unit located in the first row and first column, Pix. 1.2 represents the first sensing value corresponding to the light-emitting unit located in the first row and second column, and so on. As shown in Figure 3 , if the absolute value of the difference between the multiple first sensing values ​​corresponding to the multiple light-emitting units 112 located in rows 2 to 5 and columns 2 to 5 and the third sensing value is greater than a first predetermined difference, then the multiple first sensing values ​​corresponding to the multiple light-emitting units 112 located in rows 2 to 5 and columns 2 to 5 can be considered abnormal sensing values. The compensation unit can be used to compensate the anode voltages of the multiple light-emitting units 112 located in rows 2 to 5 and columns 2 to 5 to adjust the brightness of these multiple light-emitting units 112. In this way, the accuracy of compensating the light-emitting units 112 on the display panel 11 to be compensated can be improved.

[0108] In an optional embodiment, the lookup table further includes multiple design brightnesses corresponding to multiple sets of driving parameters, and the display device further includes a display panel to be tested. The control component is further configured to: drive multiple display panels to be tested under target driving parameters, and obtain the design brightness corresponding to the target driving parameters based on the target driving parameters and the lookup table; receive a display signal provided by the camera component, wherein the display signal is a plurality of brightness values ​​corresponding to multiple light-emitting units of the display panel to be tested obtained by the camera component, and the camera component is configured to detect the multiple display panels to be tested to obtain the display signal; and when the absolute value of the difference between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness is less than or equal to a second preset difference, the display panel to be tested is determined to be a standard display panel.

[0109] Optionally, the ratio of the second preset difference to the maximum brightness among the multiple design brightnesses is in a range of 8% to 12%. Alternatively, the second preset difference is less than or equal to 100 nits.

[0110] The display image of the display panel under test can be captured by a camera component. For example, a camera can be used to capture the display image of the current frame of the display panel under test to obtain the brightness value displayed by each light-emitting unit. The difference between the brightness value of each light-emitting unit and the designed brightness can then be used to determine whether the display panel under test is a standard display panel.

[0111] For example, the display device may include a camera assembly that can obtain multiple brightness values ​​corresponding to multiple first-color light-emitting units of the display panel under test. The camera assembly may be electrically connected to the control assembly and be a built-in component of the display device. Alternatively, the camera assembly may be an external component of the display device and may be connected to the control assembly via a wired or wireless connection.

[0112] In an optional embodiment, the display screen of the display panel to be tested can also be obtained through a camera component, such as using a camera to shoot the display screen of the current frame of the display panel to be tested to obtain the brightness value displayed by each light-emitting unit. When the absolute value of the difference between the brightness value displayed by at least one light-emitting unit among the multiple light-emitting units and the design brightness is greater than a second preset difference, it can be determined that the light-emitting unit is an abnormal light-emitting unit, and the corresponding first voltage value can be searched in the lookup table according to the brightness value displayed by the abnormal light-emitting unit, and the difference between the first voltage value and the second voltage value corresponding to the design brightness is calculated to obtain a compensation voltage value. Then, the position of the abnormal light-emitting unit is determined according to the actual display screen of the display panel to be tested, and the abnormal light-emitting unit is compensated by the compensation unit.

[0113] In an optional embodiment, the sensed values ​​in the lookup table are obtained based on the current values ​​of multiple light-emitting units in N standard display panels, where N is an integer greater than or equal to 5. Due to process fluctuations in the manufacturing process of the display panel to be compensated, the current values ​​of the light-emitting units in different standard display panels may differ. Therefore, the current values ​​of the light-emitting units in the N standard display panels can be obtained in the same manner as the first sensed values. The sensed values ​​in the lookup table are then obtained based on the first sensed values ​​of the multiple light-emitting units in the N standard display panels. This can reduce the impact of process fluctuations on the accuracy of the sensed values ​​in the lookup table.

[0114] Optionally, the sensed value in the lookup table is an average of the current values ​​of the multiple light-emitting units in N standard display panels. Alternatively, the sensed value in the lookup table is a median of the current values ​​of the multiple light-emitting units in N standard display panels. This embodiment of the present application is not limited to this.

[0115] Please refer to FIG. 4 . In an optional embodiment, the display device includes a gate driving circuit, and the gate driving circuit is electrically connected to the control component and the pixel circuit respectively.

[0116] The gate drive circuit includes a light-emitting signal terminal EM, and the sensing unit includes a sensing transistor T8. The sensing transistor T8 includes a control terminal, a first electrode, and a second electrode. The control terminal of the sensing transistor T8 is electrically connected to the light-emitting signal terminal, the first electrode of the sensing transistor T8 is electrically connected to the anode of the light-emitting unit, and the second electrode of the sensing transistor T8 is electrically connected to the control component. The control component obtains a first sensing value based on a signal output by the second electrode of the sensing transistor T8. The signal output by the second electrode of the sensing transistor T8 can be a current signal or a voltage signal. If the signal output by the second electrode of the sensing transistor T8 is a voltage signal, the voltage signal can be converted into a current signal to obtain the current value of the light-emitting unit.

[0117] FIG4 shows a plurality of pixel circuits in a display substrate. The plurality of pixel circuits in FIG4 are all 3T1C pixel circuits. Specifically, the display device includes a gate driver circuit (English: Gate Driver), which includes a gate driver signal terminal Gate and a light emitting signal terminal EM; a source driver circuit (English: Source Driver), which includes a data signal terminal Vdata; a power supply circuit (English: Power Line), which includes a first voltage output terminal ELVDD and a common ground terminal ELVSS, and a sensing signal line SEN (English: Sense Line), which is electrically connected to the control component.

[0118] The four pixel circuits connected to the gate drive circuit G(1) in the display panel to be compensated are pixel circuits located in the first row of the display panel to be compensated, the four pixel circuits connected to the gate drive circuit G(2) are pixel circuits located in the second row of the display panel to be compensated, and the four pixel circuits connected to the gate drive circuit G(3) are pixel circuits located in the third row of the display panel to be compensated. The light-emitting units in the display panel to be compensated may include a red light-emitting unit (R) for emitting red light, a green light-emitting unit (G) for emitting green light, and a blue light-emitting unit (B) for emitting blue light.

[0119] Taking the pixel circuit in the third row of Figure 4 as an example, the light-emitting unit in the pixel circuit is an organic light-emitting diode (OLED). The pixel circuit includes a data write transistor T4, a drive transistor T3, a sense transistor T8, and a storage capacitor Cst. The control terminal of the write transistor T4 is electrically connected to the gate drive signal terminal G1, the control terminal of the sense transistor T8 is electrically connected to the emission signal terminal EM, and the first electrode of the sense transistor T8 is electrically connected to the control component via a sense signal line SEN (Sence).

[0120] When the pixel circuit performs light-emitting display, the operation process includes a display data writing phase and a light-emitting phase. During the display data writing phase, the gate drive signal terminal Gate controls the data writing transistor T4 to conduct, and the data signal terminal writes the data voltage to the control electrode of the driving transistor T3. The first electrode of the driving transistor T3 is electrically connected to the first voltage output terminal ELVDD. During the light-emitting phase, the driving transistor T3 outputs a corresponding driving current based on the voltage at its control terminal to drive the light-emitting unit OLED to emit light. The light-emitting unit can also be electrically connected to the common ground terminal (or low-level power supply voltage terminal) ELVSS. At the same time, the light-emitting unit OLED in the pixel circuit can be sensed by the sensing transistor T8, and the pixel circuit can be compensated based on the first sensed value (for example, compensating the anode voltage of the light-emitting unit).

[0121] Referring to FIG. 5 , the display device in the related art is not provided with a sensing unit, and therefore cannot accurately compensate the light-emitting units in the display panel to be compensated.

[0122] Please refer to Figure 6. In an optional embodiment, the gate drive circuit includes a gate drive signal terminal (G, Gate), the compensation unit includes a first compensation transistor T7, the first compensation transistor includes a control terminal, a first electrode and a second electrode, the control terminal of the first compensation transistor T7 is electrically connected to the gate drive signal terminal G, the first electrode of the first compensation transistor T7 is electrically connected to the control component, the second electrode of the first compensation transistor T7 is electrically connected to the anode of the light-emitting unit OLED, and the second electrode of the first compensation transistor T7 is used to output a compensation voltage value to the anode of the light-emitting unit OLED.

[0123] Optionally, the display device further includes a power supply circuit, the power supply circuit includes a first reference signal terminal (V1, Vinit1), and the first electrode of the first compensation transistor T7 is also electrically connected to the first reference signal terminal V1.

[0124] It should be noted that the control terminal of the transistor in the embodiment of the present application may be a gate, one of the first electrode and the second electrode may be a source, and the other of the first electrode and the second electrode may be a drain.

[0125] Optionally, the display device further includes a source driving circuit, the source driving circuit includes a data signal terminal D, and the power supply circuit further includes a first voltage output terminal ELVDD.

[0126] The pixel circuit further includes: a data writing module, a storage module, a driving module, a light-emitting control module, a first node, a second node, and a third node. The data writing module is respectively connected to the gate drive signal terminal, the data signal terminal, and the second node, and is configured to provide a data signal from the data signal terminal to the second node under the control of a gate drive signal from the gate drive signal terminal. The storage module is respectively connected to the first node and the second node, and is configured to control the potential of the first node to change synchronously with the potential of the second node. The driving module is respectively connected to the first node, the second node, and the third node, and is configured to provide a first power supply signal from the first voltage output terminal to the third node under the control of a signal from the first node. The light-emitting control module is respectively connected to the light-emitting signal terminal, the third node, and the light-emitting unit, and is configured to provide a signal from the third node to the light-emitting unit under the control of a light-emitting control signal from the light-emitting signal terminal.

[0127] Optionally, the first electrode of the sensing transistor is further electrically connected to the second electrode of the first compensation transistor; or, the first electrode of the sensing transistor is further electrically connected to the second node; or, the first electrode of the sensing transistor is further electrically connected to the third node.

[0128] As shown in Figure 6, the data writing module includes a data writing transistor T4, the storage module includes a first capacitor Cst, the driving module includes a driving transistor T3, and the light control module includes a first light emitting transistor T5 and a second light emitting transistor T6. The pixel circuit also includes a second compensation transistor T2 and a reset transistor T1.

[0129] The gate of the driving transistor T3 is connected to the first node B1, the source of the driving transistor T3 is connected to the second node B2, and the drain of the driving transistor T3 is connected to the third node B3. The gate of the data writing transistor T4 is connected to the gate driving signal terminal G, the source of the data writing transistor T4 is connected to the data signal terminal D, and the drain of the data writing transistor T4 is connected to the second node B2. The gate of the second compensation transistor T2 is connected to the gate driving signal terminal G, the drain of the second compensation transistor T2 is connected to the third node B3, and the source of the second compensation transistor T2 is connected to the first node B1. The gate of the reset transistor T1 is connected to the reset signal terminal (R, Reset), the source of the reset transistor T1 is connected to the second reference signal terminal V2, and the drain of the reset transistor T1 is connected to the first node B1. The gate of the first light-emitting transistor T5 and the gate of the second light-emitting transistor T6 are connected to the light-emitting signal terminal EM. The source of the first light-emitting transistor T5 is connected to the first voltage output terminal ELVDD. The drain of the first light-emitting transistor T5 is connected to the second node B2. The source of the second light-emitting transistor T6 is connected to the third node B3. The drain of the second light-emitting transistor T6 is connected to the anode of the light-emitting unit OLED. The cathode of the light-emitting unit OLED is connected to the common ground terminal ELVSS. The gate of the compensation transistor T7 is connected to the gate drive signal terminal G. The source of the compensation transistor T7 is connected to the first reference signal terminal V2. The drain of the compensation transistor T7 is connected to the anode of the light-emitting unit OLED. The gate of the sensing transistor T8 is connected to the light-emitting signal terminal EM. The source of the sensing transistor T8 is connected to the anode of the light-emitting unit OLED. The drain of the sensing transistor T8 is electrically connected to the control component via the sensing signal line SEN.

[0130] Alternatively, as shown in Figure 7, the gate drive signal terminal G, the reset signal terminal R and the light emitting signal terminal EM may be used together in the initialization phase t1, the signal writing phase t2 and the light emitting phase t3 of the driving circuit.

[0131] In the initialization stage t1, the gate drive signal terminal G and the light-emitting signal terminal EM are at a high level (7V), the reset signal terminal R is at a low level (-7V), the data signal terminal D is at a low level, and the sensing voltage Vsen on the sensing signal line SEN is also at a low level. At this time, the data writing transistor T4, the second compensation transistor T2, the first light-emitting transistor T5 and the second light-emitting transistor T6 are turned off, and the reset transistor T1 is turned on.

[0132] The driving transistor T3 is also turned on, and the node voltage Vg of the first node B1 is equal to Vinit2 = -3v, where Vinit2 is the voltage of the second reference signal terminal V2. One plate of the first capacitor Cst is connected to the first voltage output terminal ELVDD, so that the voltage on this plate is equal to and constant with the voltage of the first voltage output terminal ELVDD, thereby ensuring the voltage stability of the other plate of the first capacitor Cst. This initialization phase t1 prepares for the signal writing phase t2.

[0133] During the signal writing phase t2, the reset signal terminal R and the light-emitting signal terminal EM are at a high level (7V), the data signal terminal D is at a high level (2V to 6.7V), and the gate drive signal terminal G is at a low level (-7V). At this time, the first light-emitting transistor T5, the second light-emitting transistor T6, and the reset transistor T1 are turned off, while the drive transistor T3, the data writing transistor T4, and the first compensation transistor T7 and the second compensation transistor T2 are turned on. The data signal terminal D is charged to the first node B1 through the data writing transistor T4, the drive transistor T3, and the second compensation transistor T2, thereby completing the writing of the data signal to the drive transistor T3. The first compensation transistor T7 inputs a compensation signal to the anode of the light-emitting element OLED to input a compensation voltage value to the anode of the light-emitting element OLED.

[0134] The signal on the reset signal terminal R is converted, the reset transistor T1 is turned off, the node voltage Vg of the first node B1 is still Vinit2, and the driving transistor T3 is kept turned on.

[0135] As the data signal is written, the node voltage Vg of the first node B1 gradually increases until Vg=Vdata+Vth, where Vth is the threshold voltage of the driving transistor T3. The driving transistor T3 is turned off, and the data signal writing is completed.

[0136] During the light-emitting phase t3, the gate drive signal terminal G and the reset signal terminal R are at a high level (7V), the light-emitting signal terminal EM is at a low level (-7V), the data signal terminal D is at a low level, and the sensing voltage Vsen on the sensing signal line SEN is at a high level. At this time, the data writing transistor T4, the second compensation transistor T2, the reset transistor T1, and the compensation transistor T7 are turned off, the driving transistor T3, the first light-emitting transistor T5, the second light-emitting transistor T6, and the sensing transistor T8 are turned on, and the light-emitting unit OLED emits light.

[0137] Among them, by controlling the voltage of the data signal terminal D and the size of the first voltage output terminal ELVDD, the driving transistor T3 is maintained in the on state, thereby forming a current to make the light-emitting unit OLED emit light; and the sensing transistor T8 is synchronously in the on state, and the sensing signal line SEN can receive the sensing signal to obtain the first sensing value.

[0138] Referring to Figures 8, 9, and 10, the pixel circuit in the related art does not have a sensing transistor, and therefore cannot obtain the magnitude of the current flowing into the light-emitting unit. As shown in Figure 9, the source of the sensing transistor T8 can also be electrically connected to the second node B2, or, as shown in Figure 10, the source of the sensing transistor T8 can also be electrically connected to the source of the driving transistor T3, that is, to the third node B3.

[0139] In an optional embodiment, please refer to Figures 11, 12, 13, 14, 15, 16 and Table 2. Figure 11 is a relationship diagram of the monochrome brightness and current of the green light-emitting unit G, the red light-emitting unit R, and the blue light-emitting unit B, wherein the abscissa of Figure 11 is the current (mA), and the ordinate is the monochrome brightness (nit) of the three light-emitting units, the green light-emitting unit G, the red light-emitting unit R, and the blue light-emitting unit B. The current refers to the current value used in the pixel circuit to drive the light-emitting unit to emit light, and can also be called the current value of the light-emitting unit. Specifically, in Figure 11, the current size refers to when the monochrome screen of the display panel is lit, the monochrome screen refers to the red (R) screen, the green (G) screen, or the blue (B) screen. The current value used in the circuit to drive the light-emitting unit to emit light can also be called the R, G, B monochrome screen light-emitting current value. The monochromatic brightness of the green light-emitting unit G, the red light-emitting unit R and the blue light-emitting unit B all gradually increase with the increase of current. Under the same current, as the current increases, the growth rate of the monochromatic brightness of the green light-emitting unit G is the largest, followed by the growth rate of the monochromatic brightness of the red light-emitting unit R, and the growth rate of the monochromatic brightness of the blue light-emitting unit B is the smallest, that is, the growth rate of the monochromatic brightness of the blue light-emitting unit B is relatively slow.

[0140] Figure 12 is a graph showing the relationship between voltage and current for the green, red, and blue light-emitting cells G, R, and B. The ordinate of Figure 12 represents current (mA), while the ordinate represents voltage (V) for each of the three light-emitting cells. Specifically, the current on the ordinate of Figure 12 refers to the current used to drive the light-emitting cells in the circuit when a single-color display is illuminated. This single-color display refers to the red (R), green (G), or blue (B) display. This current is also referred to as the R, G, or B single-color display current. The abscissa represents voltage (V) for each of the three light-emitting cells. The current flowing through the green, red, and blue light-emitting cells G, R, and B changes sequentially when the anode voltage is 2.5V. The compensation method for light-emitting cells using the output of the compensation unit can be called external compensation. The input for external compensation can be a voltage signal. For light-emitting cells of different colors, compensation signals with the same frequency but different voltages can be used to compensate the light-emitting cells.

[0141] Figure 13 shows the relationship between the brightness of the green, red, and blue light-emitting units G, R, and B, and the brightness of the pure white W image. In Figure 11, the abscissa represents the brightness of the pure white W image (x (nits), and the ordinate represents the brightness of the three light-emitting units, Y (nits). The equation Y = 0.7006x - 11.512 represents the relationship between the brightness of the green light-emitting unit G and the brightness of the pure white W image; the equation Y = 0.2158x - 1.8557 represents the relationship between the brightness of the red light-emitting unit R and the brightness of the pure white W image; and the equation Y = 0.0647x - 0.1513 represents the relationship between the brightness of the blue light-emitting unit B and the brightness of the pure white W image. As shown in Figure 13, the single-color brightnesses of R, G, and B can be derived from the brightness of the pure white W image. This equation is relatively accurate when the brightness of the pure white W image ranges from 100 nits to 1000 nits.

[0142] Figure 14 is a graph showing the relationship between the currents of the green, red, and blue light-emitting units G, R, and B, and the pure white W screen current. The abscissa of Figure 14 represents the pure white W screen current (mA), and the ordinate represents the currents (mA) of the three light-emitting units: green, red, and B. The equation Y = 0.2351x - 4.295 represents the relationship between the current of the green light-emitting unit G and the pure white W screen current; the equation Y = 0.1738x - 4.0272 represents the relationship between the current of the red light-emitting unit R and the pure white W screen current; and the equation Y = 0.5051x + 3.9903 represents the relationship between the current of the blue light-emitting unit B and the pure white W screen current. As shown in the equations in Figure 14, the single-color currents of R, G, and B can be derived from the pure white W screen current.

[0143] Figure 15 shows the relationship between pure white W screen brightness and current. In Figure 14, the horizontal axis represents the pure white W screen current (x (mA)), and the vertical axis represents the pure white W screen brightness (Y (nits)). The equation Y = 1.2477x + 8.0581 represents the relationship between pure white W screen brightness and pure white W screen current. As shown in Figure 15, the pure white W screen brightness can be derived from the pure white W screen current.

[0144] Figure 16 shows the relationship between the ELVSS voltage of a light-emitting unit and the brightness of a pure white W image. The abscissa of Figure 16 represents the brightness of the pure white W image (x (nits)), and the ordinate represents the ELVSS voltage of the light-emitting unit (Y (V)). The equation Y = -0.0032x - 1.6732 represents the relationship between the brightness of the pure white W image and the ELVSS voltage of the light-emitting unit. As shown in Figure 16, the brightness of the pure white W image can be derived from the ELVSS voltage of the light-emitting unit.

[0145] Figures 11 to 15 above can be used to derive Figure 16, which in turn yields the data in Table 2. Figures 11 to 16 illustrate the variation in brightness of a pure white W image, the variation in current of a pure white W image, and the relationship between brightness and current, respectively. Since color control can be achieved by controlling the current of each RGB single-color light-emitting unit, that is, by driving each RGB single-color light-emitting unit to varying degrees (i.e., controlling the corresponding current of each RGB single-color light-emitting unit), and since a pure white W image is composed of three colors, RGB, the data in Table 2 can be derived through equivalent conversions of brightness and current changes of the RGB single colors and White.

[0146] The currents of the green light-emitting unit G (Green), the red light-emitting unit R (Red), and the blue light-emitting unit B (Blue) in Table 2 may be the sensed values ​​of a standard display panel, and the brightness may be the brightness of a standard display panel. For a display panel to be compensated manufactured using the same manufacturing process, the compensation voltage corresponding to the first sensed value can be obtained using the correspondence between the sensed values ​​and the ELVSS voltage in Table 2. Alternatively, based on the brightness of the display panel to be compensated, the difference between the ELVSS voltage of the display panel to be compensated and the ELVSS voltage of the standard display panel can be obtained based on the difference between the brightness of the display panel to be compensated and the design brightness.

[0147] Table 2

[0148] In an optional embodiment, the compensation voltage value can be dynamically assigned in combination with the scanning frequency of the display panel to be compensated. If the brightness of a portion of the display panel to be compensated is 350 nits and the design brightness is 500±100 nits, in order to compensate the brightness of the portion of the display panel to be compensated to within the design range, that is, the range of 400 nit to 600 nits, the compensation voltage value of the light-emitting unit in the portion of the display panel to be compensated can be a range of values. As shown in Table 2, under the condition that ELVDD and VIO (VDDIO, called logic voltage or IO voltage) remain unchanged, the ELVSS voltage range of the light-emitting unit in the standard display panel is -3.3 to -3.6V, and the ELVSS voltage of the light-emitting unit of the display panel to be compensated is -2.8V. Therefore, the compensation voltage value of the light-emitting unit in the portion of the display panel to be compensated can be 0.5V to 0.8V, thereby compensating the voltage drop between the anode and cathode of the light-emitting unit in the portion of the display panel to be compensated.

[0149] In the process of compensating the light-emitting unit, since the compensation voltage value is a range of values, the compensation voltage value can be assigned according to the range of the compensation voltage value. For example, the compensation voltage value of the light-emitting unit in some areas can be assigned to 0.5V, 0.6V, 0.7V and 0.8V, and the compensation voltage value is assigned in sequence according to the scanning frequency of the display panel to be compensated. For example, in the first scanning cycle, the compensation voltage value is assigned to 0.5V, in the second scanning cycle, the compensation voltage value is assigned to 0.6V, in the third scanning cycle, the compensation voltage value is assigned to 0.7V, in the fourth scanning cycle, the compensation voltage value is assigned to 0.8V, and in the fifth scanning cycle, the compensation voltage value is assigned to 0.5V, and so on. After compensation, the compensation signal obtained by coupling the original input signal (reset signal) and the compensation voltage value is input to the anode of the light-emitting unit, thereby correcting the current of the light-emitting unit to achieve normal display of multiple pixels on the display panel to be compensated.

[0150] In summary, embodiments of the present application provide a display device comprising a display panel to be compensated and a control component. The control component is capable of driving the display panel to be compensated under target drive parameters, obtaining a first sensed value of a light-emitting unit through a sensing unit, obtaining a first voltage value corresponding to the first sensed value and a second voltage value corresponding to the target drive parameter based on the first sensed value, the target drive parameter, and a lookup table, obtaining a compensation voltage value corresponding to the first sensed value based on the difference between the first voltage value and the second voltage value, and then writing the compensation voltage value corresponding to the first sensed value to the anode of the light-emitting unit through the compensation unit. In this manner, the magnitude of the current flowing through the light-emitting unit can be adjusted according to the magnitude of the compensation voltage value to compensate for the brightness of the light-emitting unit, so that the brightness of the display panel to be compensated reaches the designed brightness. This can solve the problem of poor display quality of display panels in related technologies and improve the display quality of the display panel in the display device.

[0151] FIG17 is a flow chart of a display device adjustment method provided by an embodiment of the present application. The method can be applied to a display device, wherein the display device includes a display panel to be compensated and a control component. The display panel to be compensated includes a pixel circuit and a light-emitting unit. The pixel circuit includes a sensing unit and a compensation unit. The sensing unit and the compensation unit are both electrically connected to the light-emitting unit. The control component is electrically connected to the sensing unit and the compensation unit, respectively. The method may include the following steps:

[0152] Step 101 : driving the display panel to be compensated under target driving parameters, and obtaining a first sensing value of a light-emitting unit through a sensing unit, where the first sensing value is a current value flowing through the light-emitting unit.

[0153] Step 102: Based on the first sensing value and a lookup table, obtain a first voltage value corresponding to the first sensing value.

[0154] Step 103: Based on the target driving parameter and the lookup table, obtain a second voltage value corresponding to the target driving parameter.

[0155] Step 104 : Obtain a compensation voltage value corresponding to the first sensing value according to the difference between the first voltage value and the second voltage value.

[0156] Step 105 : Write the compensation voltage value corresponding to the first sensing value into the anode of the light-emitting unit through the compensation unit.

[0157] In summary, embodiments of the present application provide a method for adjusting a display device, the display device comprising a display panel to be compensated and a control component. The control component is capable of driving the display panel to be compensated under target drive parameters, and obtaining a first sensed value of a light-emitting unit through a sensing unit. Based on the first sensed value, the target drive parameters, and a lookup table, a first voltage value corresponding to the first sensed value and a second voltage value corresponding to the target drive parameters are obtained. A compensation voltage value corresponding to the first sensed value is obtained based on the difference between the first voltage value and the second voltage value. The compensation voltage value corresponding to the first sensed value is then written to the anode of the light-emitting unit through the compensation unit. In this manner, the magnitude of the current flowing through the light-emitting unit can be adjusted according to the magnitude of the compensation voltage value to compensate for the brightness of the light-emitting unit, so that the brightness of the display panel to be compensated reaches the designed brightness. This method can solve the problem of poor display quality of display panels in related technologies and improve the display quality of the display panel in the display device.

[0158] FIG18 is a flow chart of another display device adjustment method provided by an embodiment of the present application. The method can be applied to a display device, wherein the display device includes a display panel to be compensated and a control component. The display panel to be compensated includes a pixel circuit and a light-emitting unit. The pixel circuit includes a sensing unit and a compensation unit. The sensing unit and the compensation unit are both electrically connected to the light-emitting unit. The control component is electrically connected to the sensing unit and the compensation unit, respectively. The method may include the following steps:

[0159] Step 201: Obtain a standard display panel.

[0160] A standard display panel is a display panel under test that has been determined through optical testing to be capable of achieving the designed brightness under multiple sets of driving parameters. The display panel under test can be subjected to multiple tests using a CCD detection device to determine whether it is a standard display panel. The multiple tests include testing the display panel under test at multiple different brightness levels. Because the display panel under test can be driven using different driving parameters, different brightness levels can be displayed on the display panel under test. Specifically, multiple sets of driving parameters can be stored in the control component. The driving parameters can include set values ​​for at least one of multiple signals, such as timing signals, data signals, and driving power signals, used to drive the pixel circuits in the display panel under test.

[0161] Obtaining a standard display panel can include the following steps:

[0162] (1) Obtain multiple display panels to be tested.

[0163] The display panel to be compensated, the display panel to be tested, and the standard display panel may be display panels with the same structure and may be display panels manufactured using the same batch production process.

[0164] (2) driving multiple display panels under test under target driving parameters, and obtaining design brightness corresponding to the target driving parameters based on the target driving parameters and a lookup table, wherein the lookup table also includes multiple design brightnesses corresponding to multiple sets of driving parameters.

[0165] (3) Receive a display signal provided by the camera component, where the display signal is a plurality of brightness values ​​corresponding to a plurality of light-emitting units of the display panel to be tested obtained by the camera component.

[0166] The camera assembly is used to detect multiple display panels to be tested to obtain display signals.

[0167] The display image of the display panel to be tested can be obtained through a camera component. For example, a camera is used to shoot the display image of the current frame of the display panel to be tested to obtain the brightness value displayed by each light-emitting unit.

[0168] For example, the display device may include a camera assembly that can acquire multiple brightness values ​​corresponding to multiple first-color light-emitting units of the display panel under test. The camera assembly may be electrically connected to the control assembly and be a built-in component of the display device. Alternatively, the camera assembly may be an external component of the display device and may be connected to the control assembly via a wired or wireless connection.

[0169] (4) When the absolute values ​​of the differences between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness are all less than or equal to the second preset difference, the display panel to be tested is determined to be a standard display panel.

[0170] Optionally, a ratio of the second preset difference to the maximum brightness among the multiple design brightnesses is in a range of 8% to 12%, or the second preset difference is less than or equal to 100 nits.

[0171] Whether the display panel under test is a standard display panel can be determined based on the difference between the brightness value of each light-emitting unit and the design brightness. In an optional embodiment, the display image of the display panel under test can also be captured using a camera component, such as by using a camera to capture the display image of the current frame of the display panel under test to obtain the brightness value displayed by each light-emitting unit. When the absolute value of the difference between the brightness value displayed by multiple light-emitting units on the display panel under test and the design brightness is less than or equal to a second preset difference, it can be determined that the display panel under test is a standard display panel.

[0172] Step 202: Obtain a lookup table.

[0173] Among them, the lookup table is stored in the control component, and the lookup table includes multiple data groups and multiple groups of driving parameters corresponding to the multiple data groups. The target driving parameter is any one of the multiple groups of driving parameters. Each data group includes a sensing value and a voltage value corresponding to a sensing value. The sensing value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The standard display panel is a display panel that can achieve the designed brightness under multiple sets of driving parameters.

[0174] The pixel circuits in N standard display panels can be sensed by a sensing unit, and a lookup table can be obtained according to the corresponding relationship between the brightness, voltage and current of the light-emitting unit in the display panel to be compensated.

[0175] Step 203 : driving the display panel to be compensated under target driving parameters, and obtaining a first sensing value of the light-emitting unit through the sensing unit.

[0176] The first sensing value is the current value flowing through the light emitting unit.

[0177] The display panel to be compensated includes a pixel circuit and a light-emitting unit. The pixel circuit includes a sensing unit and a compensation unit. Both the sensing unit and the compensation unit are electrically connected to the light-emitting unit. The sensing unit is configured to obtain a first sensing value of the light-emitting unit, where the first sensing value is a current value flowing through the light-emitting unit. Optionally, the multiple sets of driving parameters include a target driving parameter, and the first sensing value is the first sensing value of the light-emitting unit in the display panel to be compensated when driven by the target driving parameter.

[0178] Step 204: Acquire a second sensing value based on the first sensing value.

[0179] The second sensing value is the sensing value having the smallest difference with the first sensing value among the multiple sensing values ​​stored in the lookup table. The lookup table is stored in the control component and includes multiple data groups, each data group including a sensing value and a voltage value corresponding to the sensing value. The sensing value in the data group is the current value of the light-emitting unit in a standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The multiple data groups correspond one-to-one to multiple sets of driving parameters for driving the standard display panel. The standard display panel is a display panel that can achieve a designed brightness under multiple sets of driving parameters as determined through optical testing.

[0180] A set of target driving parameters can be determined from multiple sets of driving parameters. The target driving parameters can be any set of driving parameters from the multiple sets of driving parameters. Alternatively, the multiple sets of target parameters can be sorted from small to large according to the brightness of multiple design brightnesses corresponding to the multiple sets of target parameters, and the median of the sorted multiple sets of target parameters can be used as the target driving parameter, and the display panel to be compensated can be driven according to the target driving parameter.

[0181] Since the acquired first sensing value may not be the data stored in the lookup table, the position of the first sensing value in the lookup table may be represented by the second sensing value in the lookup table that has the smallest difference with the first sensing value.

[0182] It can be understood that the multiple data groups in the lookup table include a data group corresponding to the target driving parameters. The sensing values ​​and voltage values ​​in this data group are obtained by driving the standard display panel through the target driving parameters, and the current value of the light-emitting unit and the cathode voltage value of the light-emitting unit in the standard display panel are obtained.

[0183] When the display panel to be compensated is driven according to the target driving parameters, if the first sensing value obtained by the sensing unit is slightly different from the sensing value of the standard display panel in the lookup table, or the second sensing value corresponding to the first sensing value is the sensing value of the standard display panel, the display panel to be compensated is a standard display panel.

[0184] If the first sensing value obtained by the sensing unit is significantly different from the sensing value of the standard display panel in the lookup table, or the second sensing value corresponding to the first sensing value is not the sensing value of the standard display panel, the compensation unit can be used to compensate the display panel to be compensated.

[0185] Step 205 : Obtain a first voltage value corresponding to the second sensing value from a lookup table.

[0186] According to the second sensing value, the ELVSS voltage value corresponding to the second sensing value may be found in a lookup table.

[0187] Step 206 : Based on the target driving parameter and the lookup table, obtain a second voltage value corresponding to the target driving parameter.

[0188] Since the lookup table is obtained based on a standard display panel, the second voltage value may be the ELVSS voltage value of the standard display panel.

[0189] Step 207 : Obtain a compensation voltage value corresponding to the first sensing value according to the difference between the first voltage value and the second voltage value.

[0190] It is understood that, since the greater the voltage difference between the anode voltage of a light-emitting unit and the cathode voltage of the light-emitting unit, the greater the current flowing through the light-emitting unit and the greater the brightness of the light-emitting unit; therefore, when the display panel to be compensated is driven using the target driving parameters, if the brightness of the display panel to be compensated does not reach the designed brightness, the anode voltage of the light-emitting unit in the display panel to be compensated can be compensated to increase the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit, thereby increasing the brightness of the light-emitting unit and thereby increasing the brightness of the display panel to be compensated. For example, when the display panel to be compensated is driven using the target parameters, the anode voltage of the light-emitting unit is 1V, and the cathode voltage of the light-emitting unit is -3V according to the first sensed value and the lookup table, the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit is 4V. When the standard display panel is driven using the target parameters, the anode voltage of the light-emitting unit is 1V, and the cathode voltage of the light-emitting unit is -5V according to the lookup table, the voltage difference between the anode voltage of the light-emitting unit and the cathode voltage of the light-emitting unit is 6V. The compensation unit can be used to compensate the light-emitting units in the display panel to be compensated. The compensation voltage value is 2V. That is, the anode voltage of the light-emitting unit can be compensated from 1V to 3V. At this time, the cathode voltage of the light-emitting unit is -3V, and the voltage difference between the anode voltage and the cathode voltage of the light-emitting unit is 6V. In this way, the brightness of the light-emitting units on the display panel to be compensated can reach the designed brightness.

[0191] Step 208: Write the compensation voltage value into the anode of the light-emitting unit.

[0192] The compensation voltage value of the light-emitting unit is obtained and written into the anode of the light-emitting unit through the compensation unit. In this way, the current value flowing through the light-emitting unit can be adjusted or adjusted according to the magnitude of the compensation voltage value to compensate or adjust the brightness of the light-emitting unit so that the brightness of the light-emitting unit reaches the designed brightness.

[0193] FIG19 is a schematic diagram of the structure of a display adjustment device provided in an embodiment of the present application. Referring to FIG19 , the display adjustment device 400 includes:

[0194] The acquisition module 410 is configured to drive the display panel to be compensated under target driving parameters and acquire a first sensing value of the light emitting unit through a sensing unit, where the first sensing value is a current value flowing through the light emitting unit.

[0195] The first lookup module 420 is configured to obtain a first voltage value corresponding to the first sensed value based on the first sensed value and a lookup table.

[0196] The second lookup module 430 is configured to obtain a second voltage value corresponding to the target driving parameter based on the target driving parameter and the lookup table.

[0197] The calculation module 440 is configured to obtain a compensation voltage value corresponding to the first sensing value according to a difference between the first voltage value and the second voltage value.

[0198] The adjustment module 450 is configured to write the compensation voltage value corresponding to the first sensing value into the anode of the light-emitting unit through the compensation unit.

[0199] In addition, an embodiment of the present application also provides an adjustment device for a display device, the adjustment device for the display device includes a processor and a memory, the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement an adjustment method for the display device as in any of the above embodiments.

[0200] In addition, an embodiment of the present application also provides a computer storage medium, which stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement an adjustment method for a display device as in any of the above embodiments.

[0201] In addition, embodiments of the present application further provide a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the display device adjustment method described in any of the above embodiments.

[0202] In this application, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0203] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0204] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0205] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0206] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display device, characterized in that: The display device includes a display panel to be compensated and a control component, wherein the display panel to be compensated includes a pixel circuit and a light-emitting unit, the pixel circuit includes a sensing unit and a compensation unit, the sensing unit and the compensation unit are both electrically connected to the light-emitting unit, and the control component is electrically connected to the sensing unit and the compensation unit respectively; The control component is used to drive the display panel to be compensated under target driving parameters, and obtain a first sensing value of the light-emitting unit through the sensing unit; The control component is further configured to obtain a first voltage value corresponding to the first sensing value based on the first sensing value and a lookup table, obtain a second voltage value corresponding to the target driving parameter based on the target driving parameter and the lookup table, and obtain a compensation voltage value corresponding to the first sensing value based on a difference between the first voltage value and the second voltage value; The control component is further configured to write a compensation voltage value corresponding to the first sensing value into the anode of the light-emitting unit through the compensation unit.

2. The display device according to claim 1, wherein The first sensing value is a current value flowing through the light emitting unit; The control component is further configured to: obtain a second sensing value based on the first sensing value, where the second sensing value is a sensing value having the smallest difference with the first sensing value among the plurality of sensing values ​​stored in the lookup table; The first voltage value corresponding to the second sensing value is obtained in the lookup table.

3. The display device according to claim 2, wherein: The display device further includes a comparison circuit, and the control component is further configured to obtain a sensing value in the data group corresponding to the target driving parameter from the lookup table, use the sensing value as a third sensing value, and transmit the third sensing value to the comparison circuit; The comparison circuit is used to monitor the first sensing value of the light-emitting unit, and when it is monitored that the absolute value of the difference between the first sensing value and the third sensing value of the light-emitting unit reaches a first preset difference, it sends an indication signal to the control component to instruct the control component to obtain the compensation voltage value of the light-emitting unit based on the lookup table.

4. The display device according to claim 3, wherein The ratio of the first preset difference to the third sensing value is in a range of 5% to 15%.

5. The display device according to claim 1, wherein The lookup table is stored in the control component, and the lookup table includes multiple data groups and multiple groups of driving parameters corresponding to the multiple data groups. The target driving parameter is any one of the multiple groups of driving parameters. Each of the data groups includes a sensing value and a voltage value corresponding to the sensing value. The sensing value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The standard display panel is a display panel that can achieve the designed brightness under the multiple groups of driving parameters.

6. The display device according to claim 5, wherein: The lookup table further includes a plurality of design brightnesses corresponding one-to-one to the plurality of sets of driving parameters. The display device further includes a display panel to be tested. The control component is further configured to: driving the plurality of display panels to be tested under the target driving parameters, and obtaining a design brightness corresponding to the target driving parameters based on the target driving parameters and the lookup table; receiving a display signal provided by the camera assembly, wherein the display signal is a plurality of brightness values ​​corresponding to a plurality of light-emitting units of the display panel to be tested, obtained by the camera assembly, and the camera assembly is used to detect the plurality of display panels to be tested to obtain the display signal; When the absolute values ​​of the differences between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness are all less than or equal to a second preset difference, the display panel to be tested is determined to be the standard display panel.

7. The display device according to claim 6, wherein: The ratio of the second preset difference to the maximum brightness among the multiple design brightnesses ranges from 8% to 12%.

8. The display device according to claim 1, wherein The sensing values ​​in the lookup table are obtained based on the current values ​​of the plurality of light-emitting units in the N standard display panels; Wherein, N is an integer greater than or equal to 5.

9. The display device according to claim 8, wherein The sensed value in the lookup table is an average of the current values ​​of the plurality of light emitting units in the N standard display panels.

10. The display device according to claim 1, wherein The display device includes a gate driving circuit, wherein the gate driving circuit is electrically connected to the control component and the pixel circuit respectively; The gate drive circuit includes a light-emitting signal terminal, the sensing unit includes a sensing transistor, the sensing transistor includes a control terminal, a first electrode, and a second electrode, the control terminal of the sensing transistor is electrically connected to the light-emitting signal terminal, the first electrode of the sensing transistor is electrically connected to the anode of the light-emitting unit, the second electrode of the sensing transistor is electrically connected to the control component, and the control component obtains the first sensing value based on the signal output by the second electrode of the sensing transistor.

11. The display device according to claim 10, wherein: The gate drive circuit includes a gate drive signal terminal, the compensation unit includes a first compensation transistor, the first compensation transistor includes a control terminal, a first electrode and a second electrode, the control terminal of the first compensation transistor is electrically connected to the gate drive signal terminal, the first electrode of the first compensation transistor is electrically connected to the control component, the second electrode of the first compensation transistor is electrically connected to the anode of the light-emitting unit, and the second electrode of the first compensation transistor is used to output the compensation voltage value to the anode of the light-emitting unit.

12. The display device according to claim 11, wherein The display device further includes a power supply circuit, the power supply circuit includes a first reference signal terminal, and the first electrode of the first compensation transistor is also electrically connected to the first reference signal terminal.

13. The display device according to claim 12, wherein: The display device further includes a source driving circuit, the source driving circuit includes a data signal terminal, and the power supply circuit further includes a first voltage output terminal; The pixel circuit further includes: a data writing module, a storage module, a driving module, a light emitting control module, a first node, a second node and a third node; The data writing module is connected to the gate driving signal terminal, the data signal terminal and the second node respectively, and is used to provide the data signal from the data signal terminal to the second node under the control of the gate driving signal from the gate driving signal terminal; The storage module is connected to the first node and the second node respectively, and is used to control the potential of the first node to change synchronously with the potential of the second node; The driving module is connected to the first node, the second node and the third node respectively, and is used to provide the first power signal from the first voltage output terminal to the third node under the control of the signal of the first node; The light control module is connected to the light signal terminal, the third node and the light unit respectively, and is used to provide the light module with a signal from the third node under the control of the light control signal from the light signal terminal.

14. The display device according to claim 13, wherein: The first electrode of the sensing transistor is also electrically connected to the second electrode of the first compensation transistor; Alternatively, the first electrode of the sensing transistor is further electrically connected to the second node; Alternatively, the first electrode of the sensing transistor is further electrically connected to the third node.

15. A display device adjustment method, characterized in that: For a display device, the display device includes a display panel to be compensated and a control component, the display panel to be compensated includes a pixel circuit and a light-emitting unit, the pixel circuit includes a sensing unit and a compensation unit, the sensing unit and the compensation unit are both electrically connected to the light-emitting unit, the control component is electrically connected to the sensing unit and the compensation unit respectively, and the method includes: driving the display panel to be compensated under target driving parameters, and obtaining a first sensing value of the light-emitting unit through the sensing unit, where the first sensing value is a current value flowing through the light-emitting unit; Based on the first sensing value and a lookup table, obtaining a first voltage value corresponding to the first sensing value; Based on the target driving parameter and the lookup table, obtaining a second voltage value corresponding to the target driving parameter; Obtaining a compensation voltage value corresponding to the first sensing value according to a difference between the first voltage value and the second voltage value; The compensation voltage value corresponding to the first sensing value is written into the anode of the light emitting unit through the compensation unit.

16. The method according to claim 15, characterized in that The obtaining, based on the first sensing value and a lookup table, a first voltage value corresponding to the first sensing value includes: Acquire a second sensing value based on the first sensing value, where the second sensing value is a sensing value having the smallest difference with the first sensing value among the plurality of sensing values ​​stored in the lookup table; The first voltage value corresponding to the second sensing value is obtained in the lookup table.

17. The method according to claim 15, characterized in that The lookup table is stored in the control component, and the lookup table includes multiple data groups, each of the data groups includes a sensing value and a voltage value corresponding to the sensing value, the sensing value in the data group is the current value of the light-emitting unit in the standard display panel, and the voltage value in the data group is the cathode voltage value of the light-emitting unit in the standard display panel. The multiple data groups correspond one-to-one to multiple sets of driving parameters for driving the standard display panel, and the standard display panel is a display panel that can achieve the designed brightness under the multiple sets of driving parameters.

18. The method according to claim 17, characterized in that The lookup table further includes a plurality of design brightnesses corresponding one-to-one to the plurality of sets of driving parameters. Before driving the display panel to be compensated under the target driving parameters, the method further includes: Obtain multiple display panels to be tested; driving the plurality of display panels to be tested under the target driving parameters, and obtaining a design brightness corresponding to the target driving parameters based on the target driving parameters and the lookup table; receiving a display signal provided by the camera assembly, wherein the display signal is a plurality of brightness values ​​corresponding to a plurality of light-emitting units of the display panel to be tested, obtained by the camera assembly, and the camera assembly is used to detect the plurality of display panels to be tested to obtain the display signal; When the absolute values ​​of the differences between the multiple brightness values ​​corresponding to the multiple light-emitting units of the display panel to be tested and the design brightness are all less than or equal to a second preset difference, the display panel to be tested is determined to be the standard display panel.

19. An adjustment device for a display device, characterized in that: The adjustment device of the display panel includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the adjustment method of the display device as described in any one of claims 15 to 18.

20. A computer storage medium, characterized in that The computer storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the adjustment method of the display device as described in any one of claims 15 to 18.

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