Display adjusting method, display adjusting module and display device

Abstract

The invention provides a display adjusting method, a display adjusting module and a display device. The display adjusting method comprises the following steps: in a debugging stage, controlling the display panel to be at a specific temperature, providing a first predetermined gray-scale voltage for the sub-pixels, adjusting the voltage value of a first voltage signal provided to a first voltage end, and then detecting the display brightness of the display panel, and recording the difference between the voltage value of the first voltage signal and the first standard voltage value in a compensation voltmeter as a first compensation voltage until the difference between the detected display brightness of the display panel and the first expected brightness is within the brightness difference range (S1). The scheme of the dynamic first voltage signal is adopted, and the voltage values of the corresponding first voltage signal are set at different temperatures, so that the stability of the brightness is ensured, and the influence of the temperature on the display brightness of the display panel is small.

Description

Display adjustment method, display adjustment module, and display device Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display adjustment method, a display adjustment module, and a display device. Background Technology

[0002] In the display field, oxide processes are frequently used due to their high uniformity. Internal compensation circuits have garnered industry attention because they significantly reduce costs due to lower requirements for integrated circuits (ICs). However, using oxide internal compensation pixels can lead to increased panel brightness at high temperatures (primarily due to the voltage drop across OLEDs and the temperature-dependent mobility of oxide transistors).

[0003] Summary of the Invention

[0004] In one aspect, embodiments of this disclosure provide a display adjustment method applied to a display device, the display device including a display panel, the display panel including pixels, the pixels including a plurality of sub-pixels; the sub-pixels including light-emitting elements, the cathodes of the light-emitting elements being electrically connected to a first voltage terminal; the display adjustment method including an adjustment step;

[0005] The debugging steps include: during the debugging phase, controlling the display panel to be at a specific temperature, providing a first predetermined grayscale voltage to the sub-pixel, adjusting the voltage value of the first voltage signal provided to the first voltage terminal, then detecting the display brightness of the display panel until the difference between the detected display brightness of the display panel and the first expected brightness is within the brightness difference range, and using the difference between the voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage, and recording it in the compensation voltage table.

[0006] In at least one embodiment of this disclosure, the display adjustment method further includes a display adjustment step disposed after the debugging step;

[0007] The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel, obtaining a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated first voltage signal to the first voltage terminal; the voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensation voltage.

[0008] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal; the debugging step further includes:

[0009] During the debugging phase, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0010] In at least one embodiment of this disclosure, during the debugging phase, after recording the first compensation voltage in the first compensation voltage table, the debugging step further includes:

[0011] A second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage and recorded in the compensation voltage table.

[0012] The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

[0013] In at least one embodiment of this disclosure, the grayscale value corresponding to the second predetermined grayscale voltage is less than or equal to 32.

[0014] In at least one embodiment of this disclosure, the display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal;

[0015] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0016] In at least one embodiment of this disclosure, the display adjustment method includes N debugging steps, where the nth debugging step corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; the nth debugging stage includes the nth first debugging time period; the nth debugging step includes:

[0017] During the nth first debugging period, the display panel is controlled to be at a specific temperature, the nth first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal provided to the first voltage terminal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth first expected brightness is within the brightness difference range. The difference between the voltage value of the first voltage signal and the first standard voltage value is used as the nth first compensation voltage and recorded in the compensation voltage table.

[0018] The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

[0019] In at least one embodiment of this disclosure, the display adjustment method further includes a display adjustment step disposed after the debugging step;

[0020] The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel; based on the actual temperature and the display brightness adjustment range in which the display panel is located, obtaining a corresponding first compensation voltage from the compensation voltage meter, and providing a compensated first voltage signal to the first voltage terminal; the voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensation voltage.

[0021] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal; the nth debugging step further includes:

[0022] During the nth first debugging time period, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0023] In at least one embodiment of this disclosure, the nth debugging phase further includes an nth second debugging time period set after the nth first debugging time period; the nth debugging step further includes:

[0024] During the nth second debugging time period, the nth second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the nth second compensation voltage and recorded in the compensation voltage table.

[0025] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0026] In at least one embodiment of this disclosure, the display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the display brightness adjustment range of the display panel, and providing a compensated initial voltage signal to the initial voltage terminal;

[0027] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0028] In at least one embodiment of this disclosure, in the display panel, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage further includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M; the nth debugging step further includes:

[0029] During the m-th second modulation sub-time period included in the n-th second debugging time period, the n-th second predetermined grayscale voltage is provided to the m-th sub-pixel in the pixel to adjust the voltage value of the initial voltage signal. Then, the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness in the n-th row and m-th column is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage in the n-th row and m-th column and recorded in the compensation voltage table.

[0030] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0031] In at least one embodiment of this disclosure, the display adjustment step includes:

[0032] During the display phase, based on the actual temperature, the display brightness adjustment range of the display panel, and the color of the sub-pixel, a corresponding second compensation voltage is obtained from the compensation voltage meter, and a compensated initial voltage signal is provided to the initial voltage terminal of the sub-pixel with the corresponding color in the display panel.

[0033] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0034] In a second aspect, embodiments of this disclosure provide a display adjustment module applied to a display device, the display device including a display panel, the display panel including pixels, the pixels including a plurality of sub-pixels; the sub-pixels including light-emitting elements, the cathodes of the light-emitting elements being electrically connected to a first voltage terminal; the display adjustment module including a temperature control module, a detection module, and an adjustment module;

[0035] The temperature control module is used to control the display panel to a specific temperature during the debugging phase, and then provide a start adjustment signal to the adjustment module.

[0036] The detection module is used to detect the brightness of the display panel after receiving the first detection control signal during the debugging phase, and to provide a first adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and to provide a first stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range.

[0037] The adjustment module is used to, during the debugging phase, after receiving a start adjustment signal, provide a first predetermined grayscale voltage to the sub-pixel, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide a first detection control signal to the detection module. It is also used to, after receiving the first adjustment control signal, adjust the voltage value of the first voltage signal provided to the first voltage terminal, provide the first detection control signal to the detection module, and after receiving the first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage in the compensation voltage table.

[0038] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal;

[0039] The adjustment module is further configured to, during the debugging phase, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0040] In at least one embodiment of this disclosure, the adjustment module is further configured to, during the debugging phase, after recording the first compensation voltage in the compensation voltage table, provide a second predetermined grayscale voltage to the sub-pixel, adjust the voltage value of the initial voltage signal, and provide a second detection control signal to the detection module; and is further configured to, after receiving the second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the second detection control signal to the detection module, and after receiving the second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the second compensation voltage in the compensation voltage table.

[0041] The detection module is also used during the debugging phase to detect the brightness of the display panel after receiving the second detection control signal, and to provide a second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is not within the brightness difference range, and to provide a second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is within the brightness difference range.

[0042] The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

[0043] In at least one embodiment of this disclosure, the grayscale value corresponding to the second predetermined grayscale voltage is less than or equal to 32.

[0044] In at least one embodiment of this disclosure, the display cycle includes N debugging stages; the nth debugging stage corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; the nth debugging stage includes the nth first debugging time period;

[0045] The adjustment module further includes a range control circuit, which is used to control the display panel to operate within the nth display brightness adjustment range during the nth debugging phase.

[0046] The temperature control module is used to control the display panel to a specific temperature during the nth first debugging period, and then provide the adjustment module with an nth start adjustment signal;

[0047] The detection module is used to detect the brightness of the display panel after receiving the nth first detection control signal during the nth first debugging time period, and to provide the nth first adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and to provide the nth first stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range.

[0048] The adjustment module is used to provide the sub-pixel with the nth first predetermined grayscale voltage after receiving the nth start adjustment signal during the nth first debugging time period, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide the nth first detection control signal to the detection module. It is also used to adjust the voltage value of the first voltage signal provided to the first voltage terminal after receiving the nth first adjustment control signal, provide the nth first detection control signal to the detection module, and after receiving the nth first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the nth first compensation voltage in the compensation voltage table.

[0049] The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

[0050] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal;

[0051] The adjustment module is further configured to, during the nth first debugging time period, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0052] In at least one embodiment of this disclosure, the nth debugging phase further includes an nth second debugging period set after the nth first debugging period;

[0053] The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the nth second compensation voltage in the compensation voltage table.

[0054] The detection module is also used to detect the brightness of the display panel after receiving the nth second detection control signal during the nth second debugging time period, and to provide the nth second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is not within the brightness difference range, and to provide the nth second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is within the brightness difference range.

[0055] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0056] In at least one embodiment of this disclosure, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage further includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M;

[0057] The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the mth second modulation sub-time period included in the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second stop adjustment signal, record the difference between the current initial voltage signal voltage value and the second standard voltage value as the nth row and mth column second compensation voltage in the compensation voltage table;

[0058] The detection module is further configured to, after receiving the second detection control signal in the nth row and mth column during the mth second modulation sub-time period included in the nth second debugging time period, detect the brightness of the display panel, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is not within the brightness difference range, provide the second adjustment control signal in the nth row and mth column to the adjustment module, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is within the brightness difference range, provide the second stop adjustment signal in the nth row and mth column to the adjustment module.

[0059] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0060] In a third aspect, embodiments of this disclosure provide a display device, including a display panel, a temperature detector, and a control circuit; the control circuit stores a compensation voltage meter; the compensation voltage meter records a temperature and a first compensation voltage corresponding to the temperature;

[0061] The display panel includes pixels, and each pixel includes a plurality of sub-pixels arranged in a row and column array; each sub-pixel includes a light-emitting element and a pixel circuit, and the cathode of the light-emitting element is electrically connected to a first voltage terminal;

[0062] The temperature detector is used to detect the actual temperature of the display panel and provide the actual temperature to the control circuit;

[0063] The control circuit is used to obtain a corresponding first compensation voltage from the compensation voltage meter according to the actual temperature, and to provide a compensated first voltage signal to the first voltage terminal according to the first compensation voltage.

[0064] In at least one embodiment of this disclosure, the compensation voltage meter also records a second compensation voltage corresponding to the temperature; the pixel circuit further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0065] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to provide a compensated initial voltage signal to the initial voltage terminal according to the second compensation voltage.

[0066] In at least one embodiment of this disclosure, the control circuit includes a display driver chip and a power management chip;

[0067] The display driver chip is used to obtain a corresponding first compensation voltage and a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to obtain a compensated first voltage signal according to the first compensation voltage, and to provide the compensated first voltage signal to the power management chip. According to the second compensation voltage, it obtains a compensated initial voltage signal and provides the compensated initial voltage signal to the initial voltage terminal.

[0068] The power management chip is used to provide the compensated first voltage signal to the first voltage terminal.

[0069] In at least one embodiment of this disclosure, the compensation voltage meter records temperature, display brightness adjustment range, and a first compensation voltage corresponding to temperature and display brightness adjustment range;

[0070] The control circuit is used to obtain a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated first voltage signal to the first voltage terminal based on the first compensation voltage.

[0071] In at least one embodiment of this disclosure, the compensation voltage meter also records a second compensation voltage corresponding to the temperature and display brightness adjustment range; the sub-pixel further includes an initialization circuit, which is electrically connected to the initial control terminal, the initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0072] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated initial voltage signal to the initial voltage terminal based on the second compensation voltage.

[0073] In at least one embodiment of this disclosure, in the display panel, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the compensation voltage meter also records a second compensation voltage corresponding to the temperature, the display brightness adjustment range, and the color of the sub-pixel; the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0074] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, the actual display brightness adjustment range of the display panel, and the color of the sub-pixel, and to provide a compensated initial voltage signal to the initial voltage terminal of the corresponding sub-pixel based on the second compensation voltage. Attached Figure Description

[0075] Figure 1 is a flowchart of a display adjustment method according to at least one embodiment of the present disclosure;

[0076] Figure 2 is a structural diagram of at least one embodiment of the sub-pixel;

[0077] Figure 3 shows the compensation voltage meter corresponding to the brightness adjustment range of the Y-th display;

[0078] Figure 4 shows the compensation voltage table corresponding to the brightness adjustment range of the Y-th display and different colors of the sub-pixels;

[0079] Figure 5 is a structural diagram of a display adjustment module according to at least one embodiment of the present disclosure;

[0080] Figure 6 is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0081] Figure 7 is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0082] Figure 8A is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0083] Figure 8B is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0084] Figure 8C is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0085] Figure 8D is a structural diagram of a display device according to at least one embodiment of the present disclosure;

[0086] Figure 9 is a schematic diagram of the benefits after adopting the display adjustment method described in at least one embodiment of the present disclosure;

[0087] Figure 10A is a structural diagram of at least one embodiment of a sub-pixel;

[0088] Figure 10B is a structural diagram of at least one embodiment of a sub-pixel;

[0089] Figure 10C is a structural diagram of at least one embodiment of a sub-pixel;

[0090] Figure 10D is a structural diagram of at least one embodiment of the sub-pixel;

[0091] Figure 10E is a circuit diagram of at least one embodiment of a sub-pixel;

[0092] Figure 11 is a timing diagram of at least one embodiment of the sub-pixel shown in Figure 10E;

[0093] Figure 12 is a circuit diagram of at least one embodiment of the sub-pixel;

[0094] Figure 13 is a circuit diagram of at least one embodiment of the sub-pixel;

[0095] Figure 14 is a circuit diagram of at least one embodiment of the sub-pixel;

[0096] Figure 15 is a circuit diagram of at least one embodiment of the sub-pixel. Detailed Implementation

[0097] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0098] In all embodiments of this disclosure, the transistors used can be thin-film transistors, field-effect transistors, or other devices with similar characteristics. In the embodiments of this disclosure, to distinguish the two terminals of the transistor other than the gate, one terminal is referred to as the first terminal and the other as the second terminal.

[0099] In actual operation, when the transistor is a thin-film transistor or a field-effect transistor, the first electrode can be the drain and the second electrode can be the source; or, the first electrode can be the source and the second electrode can be the drain.

[0100] The display adjustment method described in this embodiment is applied to a display device, the display device including a display panel, the display panel including pixels, the pixels including a plurality of sub-pixels; the sub-pixels including light-emitting elements, the cathode of the light-emitting elements being electrically connected to a first voltage terminal; the display adjustment method including a debugging step;

[0101] The debugging steps include: during the debugging phase, controlling the display panel to be at a specific temperature, providing a first predetermined grayscale voltage to the sub-pixel, adjusting the voltage value of the first voltage signal provided to the first voltage terminal, then detecting the display brightness of the display panel until the difference between the detected display brightness of the display panel and the first expected brightness is within the brightness difference range, and using the difference between the voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage, and recording it in the compensation voltage table.

[0102] In the display field, oxide processes are frequently used due to their high uniformity. Internal compensation circuits have garnered industry attention because they significantly reduce costs due to lower requirements for integrated circuits (ICs). However, using oxide internal compensation pixels can lead to increased panel brightness at high temperatures (primarily due to the voltage drop across OLEDs and the temperature-dependent mobility of oxide transistors).

[0103] Based on the above problems, the embodiments of this disclosure adopt a dynamic first voltage signal scheme, setting the voltage value of the corresponding first voltage signal at different temperatures to ensure the stability of brightness and make the display brightness of the display panel less affected by temperature.

[0104] In at least one embodiment of this disclosure, the first expected brightness may be the brightness corresponding to a first predetermined grayscale voltage.

[0105] Optionally, the first voltage terminal can be a low voltage terminal.

[0106] In at least one embodiment of this disclosure, the cathode of the light-emitting element included in the sub-pixel is electrically connected to a first voltage terminal. During the debugging phase, the display panel is controlled to be at a specific temperature, a first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal is adjusted, and the display brightness of the display panel is detected until the difference between the display brightness and the first expected brightness is within the brightness difference range. The first compensation voltage is recorded in the compensation voltage table. The first compensation voltage is the difference between the voltage value of the first voltage signal and the first standard voltage value.

[0107] For example, the specific temperature may include any temperature from -20℃ to 80℃, and the difference between adjacent temperatures may be 0.5℃. For example, the specific temperature may include: -20℃, -10℃, 0℃, 5℃, 10℃, 15℃, 20℃, 25℃, 30℃, 35℃, 40℃, 45℃, 50℃, 55℃, 60℃, 65℃, 70℃, 75℃, 80℃; but is not limited thereto.

[0108] Optionally, the gray level value corresponding to the first predetermined gray level voltage can be greater than 32. For example, the first predetermined gray level voltage can be 64 or 128, but is not limited thereto.

[0109] Optionally, the brightness difference range can be, for example, greater than or equal to -0.5 nits and less than or equal to 0.5 nits.

[0110] In practical implementation, during the debugging phase, the display panel can be placed on the machine to adjust the machine temperature to a specific temperature. After obtaining the first compensation voltage, the data stored in the register corresponding to the DDIC (Display Driver Integrated Circuit) can be adjusted to the corresponding digital value through programming (the compensation voltage meter can be stored in the register corresponding to the DDIC).

[0111] In at least one embodiment of this disclosure, the display adjustment method further includes a display adjustment step disposed after the debugging step;

[0112] The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel, obtaining a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated first voltage signal to the first voltage terminal; the voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensation voltage.

[0113] In specific implementation, after the debugging steps, the display adjustment method further includes a display adjustment step. During the display stage, the actual temperature of the display panel is detected, and based on the actual temperature, a first compensation voltage is obtained from the compensation voltage meter, and a compensated first voltage signal is provided to the first voltage terminal.

[0114] In at least one embodiment of this disclosure, the actual temperature of the display panel can be the average temperature of the display panel. The temperature detector detects the average temperature of the display panel and converts the analog temperature data into digital temperature data. After receiving the digital temperature data, the DDIC finds the corresponding first compensation voltage through the compensation voltage meter. The PMIC (Power Management Integrated Circuit) obtains the compensated first voltage signal based on the first compensation voltage and outputs the compensated first voltage signal.

[0115] As shown in Figure 1, the display adjustment method described in at least one embodiment of this disclosure includes a debugging step S1 and a display adjustment step S2;

[0116] The debugging step S1 includes: during the debugging phase, controlling the display panel to be at a specific temperature, providing a first predetermined grayscale voltage to the sub-pixel, adjusting the voltage value of the first voltage signal provided to the first voltage terminal, then detecting the display brightness of the display panel until the difference between the detected display brightness of the display panel and the first expected brightness is within the brightness difference range, and using the difference between the voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage, and recording it in the compensation voltage table;

[0117] The display adjustment step S2 includes: during the display stage, detecting the actual temperature of the display panel, obtaining a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated first voltage signal to the first voltage terminal;

[0118] The voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensated voltage.

[0119] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal; the debugging step further includes:

[0120] During the debugging phase, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0121] In a specific implementation, the sub-pixel may further include an initialization circuit, which, under the control of an initial control signal, writes an initial voltage signal into the anode of the light-emitting element; during the debugging phase, the voltage value of the first voltage signal and the voltage value of the initial voltage signal can be adjusted synchronously so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0122] Optionally, the predetermined voltage difference can be greater than or equal to -1V and less than or equal to 2V.

[0123] As shown in Figure 2, at least one embodiment of the sub-pixel includes a light-emitting element E1 and an initialization circuit 20;

[0124] The initialization circuit 20 is electrically connected to the initial control terminal S0, the initial voltage terminal AR, and the anode of the light-emitting element E1, respectively, and is used to write the initial voltage signal Var provided by the initial voltage terminal AR into the anode of the light-emitting element E1 under the control of the initial control signal provided by the initial control terminal S0.

[0125] The cathode of the light-emitting element E1 is electrically connected to the first voltage terminal V1.

[0126] In at least one embodiment of this disclosure, during the debugging phase, after recording the first compensation voltage in the first compensation voltage table, the debugging step further includes:

[0127] A second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage and recorded in the compensation voltage table.

[0128] The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

[0129] In practical implementation, when the display panel is in a lower grayscale display, the change in the voltage value of the initial voltage signal has a significant impact on the display brightness of the display panel. Therefore, after determining the compensated first voltage signal, a second predetermined grayscale voltage corresponding to a lower grayscale value can be provided to the sub-pixel (the grayscale value corresponding to the second predetermined grayscale voltage is less than the voltage value of the first predetermined grayscale voltage). Then, the voltage value of the initial voltage signal is adjusted, and the display brightness is detected until the difference between the display brightness and the second expected brightness is within the brightness difference range. The second compensation voltage is then recorded in the compensation voltage table.

[0130] In at least one embodiment of this disclosure, the second expected brightness can be the brightness corresponding to the second predetermined grayscale voltage.

[0131] Optionally, the grayscale value corresponding to the second predetermined grayscale voltage is less than or equal to 32. For example, the second predetermined grayscale voltage can be 32, 24, 16, or 8.

[0132] In at least one embodiment of this disclosure, the display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal;

[0133] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0134] In practical implementation, during the display stage, a second compensation voltage corresponding to the actual temperature can be obtained from the compensation voltage meter, and a compensated initial voltage signal can be provided to the initial voltage terminal so that the display brightness of the display panel will not be affected when the temperature of the display panel changes.

[0135] In at least one embodiment of this disclosure, the display adjustment method includes N debugging steps, where the nth debugging step corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; the nth debugging stage includes the nth first debugging time period; the nth debugging step includes:

[0136] During the nth first debugging period, the display panel is controlled to be at a specific temperature, the nth first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal provided to the first voltage terminal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth first expected brightness is within the brightness difference range. The difference between the voltage value of the first voltage signal and the first standard voltage value is used as the nth first compensation voltage and recorded in the compensation voltage table.

[0137] The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

[0138] In a specific implementation, the display panel may have N display brightness adjustment ranges. Within the nth display brightness adjustment range, the highest brightness of the display panel may be the nth highest brightness, and the N highest brightness values ​​are all different. For example, the display panel may have a first display brightness adjustment range, a second display brightness adjustment range, and a third display brightness adjustment range. The first highest brightness may be 600 nits, the second highest brightness may be 100 nits, and the third highest brightness may be 25 nits.

[0139] When the display panel has N display brightness adjustment ranges, the display adjustment method includes N debugging steps, where the nth debugging step corresponds to the nth display brightness adjustment range; the nth debugging stage includes an nth first debugging time period; during the nth first debugging time period, the display panel is controlled to be in the nth display brightness adjustment range, the display panel is controlled to be at a specific temperature, an nth first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal provided to the first voltage terminal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth first expected brightness is within the brightness difference range, and the difference between the voltage value of the first voltage signal and the first standard voltage value is used as the nth first compensation voltage and recorded in the compensation voltage table; the nth first compensation voltage is the first compensation voltage corresponding to the nth display brightness adjustment range.

[0140] In at least one embodiment of this disclosure, the display adjustment method further includes a display adjustment step disposed after the debugging step;

[0141] The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel; based on the actual temperature and the display brightness adjustment range in which the display panel is located, obtaining a corresponding first compensation voltage from the compensation voltage meter, and providing a compensated first voltage signal to the first voltage terminal; the voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensation voltage.

[0142] In specific implementation, during the display stage, the corresponding first compensation voltage can be obtained from the compensation voltage meter based on the actual temperature of the display panel and the display brightness adjustment range in which the display panel is located, and the compensated first voltage signal can be provided to the first voltage terminal.

[0143] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal; the nth debugging step further includes:

[0144] During the nth first debugging time period, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0145] In a specific implementation, the sub-pixel may further include an initialization circuit, which, under the control of an initial control signal, writes an initial voltage signal into the anode of the light-emitting element; and during the nth first debugging time period, synchronously adjusts the voltage value of the first voltage signal and the voltage value of the initial voltage signal so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0146] In at least one embodiment of this disclosure, the nth debugging phase further includes an nth second debugging time period set after the nth first debugging time period; the nth debugging step further includes:

[0147] During the nth second debugging time period, the nth second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the nth second compensation voltage and recorded in the compensation voltage table.

[0148] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0149] In practical implementation, when the display panel is in a lower grayscale display, the change in the voltage value of the initial voltage signal has a significant impact on the display brightness of the display panel. Therefore, after determining the compensated first voltage signal, during the nth second debugging time period, the nth second predetermined grayscale voltage corresponding to the lower grayscale value can be provided to the sub-pixel (the grayscale value corresponding to the nth second predetermined grayscale voltage is less than the voltage value of the nth first predetermined grayscale voltage). Then, the voltage value of the initial voltage signal is adjusted, and the display brightness is detected until the difference between the display brightness and the nth second expected brightness is within the brightness difference range. The nth second compensation voltage is then recorded in the compensation voltage table.

[0150] In at least one embodiment of this disclosure, the nth second expected brightness can be the brightness corresponding to the nth second predetermined grayscale voltage within the nth display brightness adjustment range.

[0151] Figure 3 shows the compensation voltage meter corresponding to the Y-th display brightness adjustment range.

[0152] In Figure 3, BD-Y refers to the Y-th display brightness adjustment range, where Y is a positive integer;

[0153] TP-X1 indicates that the temperature is X1 degrees Celsius; TP-X2 indicates that the temperature is X2 degrees Celsius; TP-XN indicates that the temperature is set to XN degrees Celsius.

[0154] VC1 is the first compensation voltage, and VC2 is the second compensation voltage;

[0155] VC1-1 is the first compensation voltage, VC1-2 is the second compensation voltage, VC1-N is the Nth compensation voltage, and N is an integer greater than 2;

[0156] VC2-1 is the first second compensation voltage, VC2-2 is the second second compensation voltage, and VC2-N is the Nth second compensation voltage.

[0157] In at least one embodiment of this disclosure, the display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the display brightness adjustment range of the display panel, and providing a compensated initial voltage signal to the initial voltage terminal;

[0158] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0159] In practical implementation, during the debugging phase, after recording the second compensation voltage, during the display phase, based on the actual temperature of the display panel and the display brightness adjustment range of the display panel, the corresponding second compensation voltage is obtained from the compensation voltage table, and based on the second compensation voltage, the compensated initial voltage signal is provided.

[0160] In at least one embodiment of this disclosure, in the display panel, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage further includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M; the nth debugging step further includes:

[0161] During the m-th second modulation sub-time period included in the n-th second debugging time period, the n-th second predetermined grayscale voltage is provided to the m-th sub-pixel in the pixel to adjust the voltage value of the initial voltage signal. Then, the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness in the n-th row and m-th column is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage in the n-th row and m-th column and recorded in the compensation voltage table.

[0162] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0163] In a specific implementation, the pixel circuit includes M sub-pixels with different colors. In the nth debugging stage, after the nth first debugging time period, an nth second debugging time period can also be set. The nth second debugging time period can include M second debugging sub-time periods. During the mth second modulation sub-time period included in the nth second debugging time period, the second compensation voltage corresponding to the nth display brightness adjustment range and the mth sub-pixel can be detected.

[0164] In at least one embodiment of this disclosure, since different initial voltage signals have a greater impact on display brightness for sub-pixels of different colors, the corresponding second compensation voltage can be detected for different display brightness adjustment ranges and sub-pixels of different colors.

[0165] Figure 4 shows the compensation voltage table corresponding to the brightness adjustment range of the Y-th display and the sub-pixels of different colors.

[0166] In Figure 3, BD-Y refers to the Y-th display brightness adjustment range, where Y is a positive integer;

[0167] TP-X1 indicates that the temperature is X1 degrees Celsius; TP-X2 indicates that the temperature is X2 degrees Celsius; TP-XN indicates that the temperature is set to XN degrees Celsius.

[0168] VC1 is the first compensation voltage, VC2-R is the second red compensation voltage, VC2-G is the second green compensation voltage, and VC2-B is the second blue compensation voltage.

[0169] VC2-1 is the first first compensation voltage, VC1-2 is the second first compensation voltage, VC1-N is the Nth first compensation voltage, and N is an integer greater than 2;

[0170] VC2-R1 is the first second red compensation voltage, VC2-R2 is the second second red compensation voltage, and VC2-RN is the Nth second red compensation voltage;

[0171] VC2-G1 is the first second green compensation voltage, VC2-G2 is the second second green compensation voltage, and VC2-GN is the Nth second green compensation voltage;

[0172] VC2-B1 is the first second blue compensation voltage, VC2-B2 is the second second blue compensation voltage, and VC2-BN is the Nth second blue compensation voltage.

[0173] In at least one embodiment of this disclosure, the display adjustment step includes:

[0174] During the display phase, based on the actual temperature, the display brightness adjustment range of the display panel, and the color of the sub-pixel, a corresponding second compensation voltage is obtained from the compensation voltage meter, and a compensated initial voltage signal is provided to the initial voltage terminal of the sub-pixel with the corresponding color in the display panel.

[0175] The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

[0176] In practical implementation, during the display stage, a corresponding second compensation voltage can be obtained based on the actual temperature of the display panel, the display brightness adjustment range of the display panel, and the color of the sub-pixel. A compensated initial voltage signal is then provided based on the second compensation voltage to minimize the impact of temperature on the display brightness of the display panel.

[0177] The display adjustment module described in this embodiment is applied to a display device. The display device includes a display panel, the display panel includes pixels, and the pixels include a plurality of sub-pixels. Each sub-pixel includes a light-emitting element, and the cathode of the light-emitting element is electrically connected to a first voltage terminal. As shown in FIG5, the display adjustment module includes a temperature control module 51, a detection module 52, and an adjustment module 53.

[0178] The temperature control module 51 is electrically connected to the adjustment module 53 and is used to control the display panel to a specific temperature during the debugging phase, and then provide a start adjustment signal to the adjustment module 53.

[0179] The detection module 52 is electrically connected to the adjustment module 53. During the debugging phase, after receiving the first detection control signal, it detects the brightness of the display panel and provides a first adjustment control signal to the adjustment module 53 when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range. When the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range, it provides a first stop adjustment signal to the adjustment module 53.

[0180] The adjustment module 53 is used to, during the debugging phase, after receiving the start adjustment signal, provide a first predetermined grayscale voltage to the sub-pixel, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide a first detection control signal to the detection module 52. It is also used to, after receiving the first adjustment control signal, adjust the voltage value of the first voltage signal provided to the first voltage terminal, provide the first detection control signal to the detection module 52, and after receiving the first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage in the compensation voltage table.

[0181] The embodiments disclosed herein employ a dynamic first voltage signal scheme, setting the corresponding first voltage signal voltage value at different temperatures to ensure brightness stability and minimize the impact of temperature on the display panel's brightness.

[0182] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal;

[0183] The adjustment module is further configured to, during the debugging phase, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0184] In a specific implementation, the sub-pixel may further include an initialization circuit, which, under the control of an initial control signal, writes an initial voltage signal into the anode of the light-emitting element; during the debugging phase, the voltage value of the first voltage signal and the voltage value of the initial voltage signal can be adjusted synchronously so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0185] In at least one embodiment of this disclosure, the adjustment module is further configured to, during the debugging phase, after recording the first compensation voltage in the compensation voltage table, provide a second predetermined grayscale voltage to the sub-pixel, adjust the voltage value of the initial voltage signal, and provide a second detection control signal to the detection module; and is further configured to, after receiving the second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the second detection control signal to the detection module, and after receiving the second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the second compensation voltage in the compensation voltage table.

[0186] The detection module is also used during the debugging phase to detect the brightness of the display panel after receiving the second detection control signal, and to provide a second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is not within the brightness difference range, and to provide a second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is within the brightness difference range.

[0187] The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

[0188] In practical implementation, when the display panel is in a lower grayscale display, the change in the voltage value of the initial voltage signal has a significant impact on the display brightness of the display panel. Therefore, after determining the compensated first voltage signal, a second predetermined grayscale voltage corresponding to a lower grayscale value can be provided to the sub-pixel (the grayscale value corresponding to the second predetermined grayscale voltage is less than the voltage value of the first predetermined grayscale voltage). Then, the voltage value of the initial voltage signal is adjusted, and the display brightness is detected until the difference between the display brightness and the second expected brightness is within the brightness difference range. The second compensation voltage is then recorded in the compensation voltage table.

[0189] Optionally, the grayscale value corresponding to the second predetermined grayscale voltage is less than or equal to 32.

[0190] In at least one embodiment of this disclosure, the display cycle includes N debugging stages; the nth debugging stage corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; the nth debugging stage includes the nth first debugging time period;

[0191] The adjustment module further includes a range control circuit, which is used to control the display panel to operate within the nth display brightness adjustment range during the nth debugging phase.

[0192] The temperature control module is used to control the display panel to a specific temperature during the nth first debugging period, and then provide the adjustment module with an nth start adjustment signal;

[0193] The detection module is used to detect the brightness of the display panel after receiving the nth first detection control signal during the nth first debugging time period, and to provide the nth first adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and to provide the nth first stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range.

[0194] The adjustment module is used to provide the sub-pixel with the nth first predetermined grayscale voltage after receiving the nth start adjustment signal during the nth first debugging time period, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide the nth first detection control signal to the detection module. It is also used to adjust the voltage value of the first voltage signal provided to the first voltage terminal after receiving the nth first adjustment control signal, provide the nth first detection control signal to the detection module, and after receiving the nth first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the nth first compensation voltage in the compensation voltage table.

[0195] The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

[0196] In a specific implementation, the display panel may have N display brightness adjustment ranges. Within the nth display brightness adjustment range, the highest brightness of the display panel may be the nth highest brightness, and the N highest brightness values ​​are all different. For example, the display panel may have a first display brightness adjustment range, a second display brightness adjustment range, and a third display brightness adjustment range. The first highest brightness may be 600 nits, the second highest brightness may be 100 nits, and the third highest brightness may be 25 nits.

[0197] When the display panel has N display brightness adjustment ranges, the display adjustment method includes N debugging steps, where the nth debugging step corresponds to the nth display brightness adjustment range; the nth debugging stage includes an nth first debugging time period; during the nth first debugging time period, the display panel is controlled to be in the nth display brightness adjustment range, the display panel is controlled to be at a specific temperature, an nth first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal provided to the first voltage terminal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth first expected brightness is within the brightness difference range, and the difference between the voltage value of the first voltage signal and the first standard voltage value is used as the nth first compensation voltage and recorded in the compensation voltage table; the nth first compensation voltage is the first compensation voltage corresponding to the nth display brightness adjustment range.

[0198] In at least one embodiment of this disclosure, the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write an initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of an initial control signal provided by the initial control terminal;

[0199] The adjustment module is further configured to, during the nth first debugging time period, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

[0200] In at least one embodiment of this disclosure, the nth debugging phase further includes an nth second debugging period set after the nth first debugging period;

[0201] The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the nth second compensation voltage in the compensation voltage table.

[0202] The detection module is also used to detect the brightness of the display panel after receiving the nth second detection control signal during the nth second debugging time period, and to provide the nth second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is not within the brightness difference range, and to provide the nth second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is within the brightness difference range.

[0203] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0204] In practical implementation, when the display panel is in a lower grayscale display, the change in the voltage value of the initial voltage signal has a significant impact on the display brightness of the display panel. Therefore, after determining the compensated first voltage signal, during the nth second debugging time period, the nth second predetermined grayscale voltage corresponding to the lower grayscale value can be provided to the sub-pixel (the grayscale value corresponding to the nth second predetermined grayscale voltage is less than the voltage value of the nth first predetermined grayscale voltage). Then, the voltage value of the initial voltage signal is adjusted, and the display brightness is detected until the difference between the display brightness and the nth second expected brightness is within the brightness difference range. The nth second compensation voltage is then recorded in the compensation voltage table.

[0205] In at least one embodiment of this disclosure, the nth second expected brightness can be the brightness corresponding to the nth second predetermined grayscale voltage within the nth display brightness adjustment range.

[0206] In at least one embodiment of this disclosure, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage further includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M;

[0207] The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the mth second modulation sub-time period included in the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second stop adjustment signal, record the difference between the current initial voltage signal voltage value and the second standard voltage value as the nth row and mth column second compensation voltage in the compensation voltage table;

[0208] The detection module is further configured to, after receiving the second detection control signal in the nth row and mth column during the mth second modulation sub-time period included in the nth second debugging time period, detect the brightness of the display panel, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is not within the brightness difference range, provide the second adjustment control signal in the nth row and mth column to the adjustment module, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is within the brightness difference range, provide the second stop adjustment signal in the nth row and mth column to the adjustment module.

[0209] The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

[0210] In a specific implementation, the pixel circuit includes M sub-pixels with different colors. In the nth debugging stage, after the nth first debugging time period, an nth second debugging time period can also be set. The nth second debugging time period can include M second debugging sub-time periods. During the mth second modulation sub-time period included in the nth second debugging time period, the second compensation voltage corresponding to the nth display brightness adjustment range and the mth sub-pixel can be detected.

[0211] In at least one embodiment of this disclosure, since different initial voltage signals have a greater impact on display brightness for sub-pixels of different colors, the corresponding second compensation voltage can be detected for different display brightness adjustment ranges and sub-pixels of different colors.

[0212] As shown in Figure 6, the display device according to the present disclosure embodiment includes a display panel P0, a temperature detector DT, and a control circuit 60; the control circuit 60 stores a compensation voltage meter; the compensation voltage meter records the temperature and a first compensation voltage corresponding to the temperature;

[0213] The display panel includes pixels, and each pixel includes a plurality of sub-pixels arranged in a row and column array; each sub-pixel includes a light-emitting element and a pixel circuit, and the cathode of the light-emitting element is electrically connected to a first voltage terminal;

[0214] The temperature detector DT is used to detect the actual temperature of the display panel P0 and provide the actual temperature to the control circuit 60.

[0215] The control circuit 60 is electrically connected to the temperature detector DT and the first voltage terminal V1, respectively, and is used to obtain the corresponding first compensation voltage from the compensation voltage meter according to the actual temperature, and provide the compensated first voltage signal to the first voltage terminal V1 according to the first compensation voltage.

[0216] In a specific implementation, the display device may include a display panel, a temperature detector, and a control circuit. The temperature detector detects the actual temperature of the display panel, and the control circuit obtains a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature. Based on the first compensation voltage, the control circuit provides a compensated first voltage signal to the first voltage terminal V1 to achieve the purpose of reducing the temperature rise effect.

[0217] In at least one embodiment of this disclosure, the compensation voltage meter also records a second compensation voltage corresponding to the temperature; the pixel circuit further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0218] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to provide a compensated initial voltage signal to the initial voltage terminal according to the second compensation voltage.

[0219] As shown in Figure 7, based on at least one embodiment of the display device shown in Figure 6, the control circuit 60 can also be electrically connected to the initial voltage terminal AR, for obtaining a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal AR according to the second compensation voltage.

[0220] In at least one embodiment of this disclosure, the control circuit includes a display driver chip and a power management chip;

[0221] The display driver chip is used to obtain a corresponding first compensation voltage and a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to obtain a compensated first voltage signal according to the first compensation voltage, and to provide the compensated first voltage signal to the power management chip. According to the second compensation voltage, it obtains a compensated initial voltage signal and provides the compensated initial voltage signal to the initial voltage terminal.

[0222] The power management chip is used to provide the compensated first voltage signal to the first voltage terminal.

[0223] In a specific implementation, the control circuit may include a display driver chip and a power management chip. The display driver chip obtains a first compensation voltage and a second compensation voltage from a compensation voltage meter according to the actual temperature, and obtains a compensated first voltage signal and a compensated initial voltage signal. The compensated first voltage signal is provided to the power management chip, and the compensated initial voltage signal is provided to the initial voltage terminal. The power management chip provides the compensated first voltage signal to the first voltage terminal.

[0224] As shown in Figure 8A, based on at least one embodiment of the display device shown in Figure 7, the control circuit includes a display driver chip DI and a power management chip PI; the compensation voltmeter can be stored in the display driver chip DI;

[0225] The display driver chip DI is electrically connected to the power management chip and the initial voltage terminal AR, respectively. It is used to obtain the corresponding first compensation voltage and the corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to obtain the compensated first voltage signal according to the first compensation voltage. The compensated first voltage signal is then provided to the power management chip PI. The compensated initial voltage signal is then obtained according to the second compensation voltage and provided to the initial voltage terminal AR.

[0226] The power management chip PI is electrically connected to the first voltage terminal V1 and is used to provide the compensated first voltage signal to the first voltage terminal.

[0227] As shown in FIG8B, based on at least one embodiment of the display device described in FIG8A, the display device described in at least one embodiment of the present disclosure further includes a common initial voltage signal line LR disposed in the peripheral area of ​​the display panel P0; the common initial voltage signal line LR extends along a first direction, and the common initial voltage signal line LR is electrically connected to the display driver chip DI and receives the initial voltage signal provided by the display driver chip DI;

[0228] The display device further includes a plurality of initial voltage lines extending along a second direction in the display area of ​​the display panel P0, wherein the plurality of initial voltage lines are electrically connected to the common initial voltage signal line LR and receive initial voltage signals from the common initial voltage signal line LR;

[0229] The multiple initial voltage lines are used to provide initial voltage signals to the multiple array-arranged sub-pixels included in the display device.

[0230] In Figure 8B, the first direction can be the vertical direction, and the second direction can be the horizontal direction;

[0231] The line labeled LI1 is the first initial voltage line, the line labeled LI2 is the second initial voltage line, the line labeled LI3 is the third initial voltage line, the line labeled LIN-1 is the (N-1)th initial voltage line, and the line labeled LIN is the Nth initial voltage line.

[0232] The pixel labeled P11 is the first pixel in the first row and first column, the pixel labeled P12 is the first pixel in the second column, the pixel labeled P13 is the first pixel in the third column, the pixel labeled P1M-1 is the first pixel in the (M-1)th column, and the pixel labeled P1M is the first pixel in the Mth column; N is an integer greater than 4, and M is an integer greater than 4.

[0233] The pixel labeled P21 is the first pixel in the second row, the pixel labeled P22 is the second pixel in the second row, the pixel labeled P23 is the third pixel in the second row, the pixel labeled P2M-1 is the (M-1)th pixel in the second row, and the pixel labeled P2M is the Mth pixel in the second row.

[0234] The pixel labeled P31 is the first pixel in the third row, the pixel labeled P32 is the second pixel in the third row, the pixel labeled P33 is the third pixel in the third row, the pixel labeled P3M-1 is the (M-1)th pixel in the third row, and the pixel labeled P3M is the Mth pixel in the third row.

[0235] The pixel labeled PN-11 is the first pixel in the N-1 row; the pixel labeled PN-12 is the second pixel in the N-1 row; the pixel labeled PN-13 is the third pixel in the N-1 row; the pixel labeled PN-1M-1 is the first pixel in the N-1 row; and the pixel labeled PN-1M is the first pixel in the N-1 row.

[0236] The pixel labeled PN1 is the first pixel in the Nth row, the pixel labeled PN2 is the second pixel in the N-1th row, the pixel labeled PN3 is the third pixel in the Nth row, the pixel labeled PNM-1 is the first pixel in the Nth row, and the pixel labeled PNM ...

[0237] The sub-pixels in the first row are electrically connected to LI1, the sub-pixels in the second row are electrically connected to LI2, the sub-pixels in the third row are electrically connected to LI3, the sub-pixels in the (M-1)th row are electrically connected to LIM-1, and the sub-pixels in the Mth row are electrically connected to LIM.

[0238] As shown in FIG8C, based on at least one embodiment of the display device described in FIG8A, the display device described in at least one embodiment of the present disclosure further includes a common first voltage signal line LVSS disposed in the peripheral area of ​​the display panel P0; the common first voltage signal line LVSS is electrically connected to the power management chip PI and receives a first voltage signal from the power management chip PI;

[0239] The display device includes a cathode layer 80 that can be a single layer, overlapping the common first voltage signal line LVSS in the peripheral area; the common first voltage signal line LVSS can extend along a first direction;

[0240] The first direction can be the vertical direction.

[0241] As shown in FIG8D, based on at least one embodiment of the display device described in FIG8A, the display device described in at least one embodiment of this disclosure further includes a plurality of first voltage signal lines disposed in the display area of ​​the display panel P0; the plurality of first voltage signal lines are electrically connected to the power management chip PI and receive first voltage signals from the power management chip PI;

[0242] The first voltage signal line extends along a first direction; the first direction can be a vertical direction.

[0243] The multiple first voltage signal lines are used to provide first voltage signals to the multiple array-arranged sub-pixels included in the display device;

[0244] The multiple first voltage signal lines can be electrically connected to the power management chip PI via connecting lines located in the lower pad area.

[0245] In Figure 8D, the line labeled VSL1 is the first first voltage signal line, the line labeled VSL2 is the second first voltage signal line, the line labeled VSL3 is the third first voltage signal line, the line labeled VSLM-1 is the (M-1)th first voltage signal line, and the line labeled VSLM is the Mth first voltage signal line.

[0246] The pixel labeled P11 is the first pixel in the first row and first column, the pixel labeled P12 is the first pixel in the second column, the pixel labeled P13 is the first pixel in the third column, the pixel labeled P1M-1 is the first pixel in the (M-1)th column, and the pixel labeled P1M is the first pixel in the Mth column; N is an integer greater than 4, and M is an integer greater than 4.

[0247] The pixel labeled P21 is the first pixel in the second row, the pixel labeled P22 is the second pixel in the second row, the pixel labeled P23 is the third pixel in the second row, the pixel labeled P2M-1 is the (M-1)th pixel in the second row, and the pixel labeled P2M is the Mth pixel in the second row.

[0248] The pixel labeled P31 is the first pixel in the third row, the pixel labeled P32 is the second pixel in the third row, the pixel labeled P33 is the third pixel in the third row, the pixel labeled P3M-1 is the (M-1)th pixel in the third row, and the pixel labeled P3M is the Mth pixel in the third row.

[0249] The pixel labeled PN-11 is the first pixel in the N-1 row; the pixel labeled PN-12 is the second pixel in the N-1 row; the pixel labeled PN-13 is the third pixel in the N-1 row; the pixel labeled PN-1M-1 is the first pixel in the N-1 row; and the pixel labeled PN-1M is the first pixel in the N-1 row.

[0250] The pixel labeled PN1 is the first pixel in the Nth row, the pixel labeled PN2 is the second pixel in the N-1th row, the pixel labeled PN3 is the third pixel in the Nth row, the pixel labeled PNM-1 is the first pixel in the Nth row, and the pixel labeled PNM ...

[0251] The sub-pixels located in the first column are electrically connected to the first voltage signal line VSL1, the sub-pixels located in the second column are electrically connected to the second voltage signal line VSL2, the sub-pixels located in the third column are electrically connected to the third voltage signal line VSL3, the sub-pixels located in the (M-1)th column are electrically connected to the (M-1)th voltage signal line VSLM-1, and the sub-pixels located in the Mth column are electrically connected to the Mth voltage signal line VSLM. The first voltage signal can be provided to the cathode layer through each sub-pixel.

[0252] In actual operation, the display device can also simultaneously provide the common first voltage signal line in Figure 8C and the multiple first voltage signal lines in Figure 8D.

[0253] In at least one embodiment of this disclosure, by establishing a compensation voltage meter, when the DDIC (Display Driver Chip) receives the analog temperature detected by the temperature detector on the motherboard (or display panel) and converts it into a digital temperature value, the DDIC finds the corresponding first compensation voltage and second compensation voltage through these digital temperature values, and feeds them back to the PMIC (Power Management Chip) via the SWIRE / I2C protocol, controlling the PMIC to output the corresponding compensated first voltage signal and compensated initial voltage signal, so that in the sub-pixel, the signal connected to the first voltage terminal and the signal connected to the initial voltage terminal are dynamically changing signals that will change with the display brightness adjustment range and temperature.

[0254] In at least one embodiment of this disclosure, the compensation voltage meter records temperature, display brightness adjustment range, and a first compensation voltage corresponding to temperature and display brightness adjustment range;

[0255] The control circuit is used to obtain a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated first voltage signal to the first voltage terminal based on the first compensation voltage.

[0256] In a specific implementation, the compensation voltage meter records the temperature, the display brightness adjustment range, and the first compensation voltage corresponding to the temperature and the display brightness adjustment range. The control circuit can obtain the first compensation voltage from the compensation voltage meter based on the detected actual temperature and the actual display brightness adjustment range of the display panel, and then provide the compensated first voltage signal to the first voltage terminal.

[0257] In at least one embodiment of this disclosure, the compensation voltage meter also records a second compensation voltage corresponding to the temperature and display brightness adjustment range; the sub-pixel further includes an initialization circuit, which is electrically connected to the initial control terminal, the initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0258] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated initial voltage signal to the initial voltage terminal based on the second compensation voltage.

[0259] In a specific implementation, the control circuit can also obtain a second compensation voltage from the compensation voltage meter based on the detected actual temperature and the actual display brightness adjustment range of the display panel, and then provide a compensated initial voltage signal to the initial voltage terminal.

[0260] In at least one embodiment of this disclosure, in the display panel, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the compensation voltage meter also records a second compensation voltage corresponding to the temperature, the display brightness adjustment range, and the color of the sub-pixel; the sub-pixel further includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal;

[0261] The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, the actual display brightness adjustment range of the display panel, and the color of the sub-pixel, and to provide a compensated initial voltage signal to the initial voltage terminal of the corresponding sub-pixel based on the second compensation voltage.

[0262] In practical implementation, the compensation voltage meter also records a second compensation voltage corresponding to the temperature, the display brightness adjustment range, and the color of the sub-pixel; the control circuit can obtain the corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, the actual display brightness adjustment range of the display panel, and the color of the sub-pixel, and then provide the compensated initial voltage signal to the initial voltage terminal.

[0263] Figure 9 is a schematic diagram illustrating the benefits of using the display adjustment method described in at least one embodiment of this disclosure. The results are obtained from simulation data, with the vertical axis representing ΔI, where ΔI equals (I1-I2) / I1. Here, I1 is the luminous current flowing through the light-emitting element at 60°C, I2 is the luminous current flowing through the light-emitting element at 25°C, and ΔI represents the change in luminous current after temperature change. Figure 9 shows the change in luminous current of the blue sub-pixel. By using the display adjustment method described in at least one embodiment of this disclosure, the current difference in luminous current at each grayscale level due to temperature can be reduced to within a standard range, for example, within 5%. In particular, since the adjustment of the first voltage signal and the initial voltage signal affects the entire grayscale, in actual adjustment, a specific grayscale level needs to be selected as the standard so that the brightness changes at both low and high grayscale levels can meet a certain range.

[0264] In Figure 9, the gray level is 255 (labeled G255), gray level is 127 (labeled G127), gray level is 64 (labeled G64), gray level is 32 (labeled G32), gray level is 16 (labeled G16), and gray level is 8 (labeled G8).

[0265] In at least one embodiment of this disclosure, a sub-pixel may include a pixel circuit and a light-emitting element. The pixel circuit may include a driving circuit and an initialization circuit. The initialization circuit may include an initial voltage terminal. The light-emitting element may include an anode terminal and a first voltage terminal. After receiving the compensated initial voltage signal and / or the compensated first voltage signal, the sub-pixel causes the pixel circuit to provide a compensated luminous current to the light-emitting element, thereby adjusting the luminous brightness of the display panel so that the luminous brightness of the display panel is consistent with the expected brightness.

[0266] Furthermore, the pixel circuit may also include a light-emitting control circuit, a data writing circuit, an energy storage circuit, a reset circuit, etc.

[0267] As shown in FIG10A, at least one embodiment of the pixel circuit may include a driving circuit 100 and an initialization circuit 101;

[0268] The control terminal of the driving circuit 100 is electrically connected to the second node N2, the first terminal of the driving circuit 100 is electrically connected to the first node N1, and the second terminal of the driving circuit 100 is electrically connected to the third node N3; the third node N3 is electrically connected to the anode of the light-emitting element E1.

[0269] The initialization circuit 101 is electrically connected to the initial control terminal S0, the initial voltage terminal AR, and the anode of the light-emitting element E1, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal AR into the anode of the light-emitting element E1 under the control of the initial control signal provided by the initial control terminal S0.

[0270] The cathode of the light-emitting element E1 is electrically connected to the first voltage terminal V1.

[0271] As shown in FIG10B, based on at least one embodiment of the pixel circuit shown in FIG10A, the at least one embodiment of the pixel circuit further includes a first light-emitting control circuit 102 and a second light-emitting control circuit 103.

[0272] The first light-emitting control circuit 102 is electrically connected to the first light-emitting control terminal EM1, the power supply voltage terminal VDD, and the first node N1, respectively, and is used to control the connection between the power supply voltage terminal VDD and the first node N1 under the control of the first light-emitting control signal provided by the first light-emitting control terminal EM1.

[0273] The control terminal of the second light-emitting control circuit 103 is electrically connected to the second light-emitting control terminal EM2. The second light-emitting control circuit 103 is disposed between the third node N3 and the anode of the light-emitting element E1. The second light-emitting control circuit 103 is used to control the connection between the third node N3 and the anode of the light-emitting element E1 under the control of the second light-emitting control signal provided by the second light-emitting control terminal EM2.

[0274] As shown in FIG10C, based on at least one embodiment of the pixel circuit shown in FIG10B, the at least one embodiment of the pixel circuit further includes a data writing circuit 104, a reset circuit 105, a first energy storage circuit 106, and a second energy storage circuit 107.

[0275] The data writing circuit 104 is electrically connected to the first scanning terminal G1, the data line DL, and the second node N2, respectively, and is used to write the data voltage provided by the data line DL into the second node N2 under the control of the first scanning signal provided by the first scanning terminal G1.

[0276] The reset circuit 105 is electrically connected to the second scan terminal G2, the reference voltage terminal REF, and the second node N2, respectively, and is used to write the reference voltage provided by the reference voltage terminal REF into the second node N2 under the control of the second scan signal provided by the second scan terminal G2.

[0277] The first energy storage circuit 106 is electrically connected to the second node N2 and the third node N3 respectively, and is used to store electrical energy;

[0278] The second energy storage circuit 107 is electrically connected to the third node N3 and the anode of the light-emitting element E1, respectively, for storing electrical energy.

[0279] The difference between at least one embodiment of the pixel circuit shown in Figure 10D and at least one embodiment of the pixel circuit shown in Figure 10C is that the initialization circuit 101 is electrically connected to the initial control terminal S0, the initial voltage terminal AR and the third node N3 respectively, and is used to write the initial voltage signal provided by the initial voltage terminal AR into the third node N3 under the control of the initial control signal provided by the initial control terminal S0.

[0280] As shown in Figure 10E, based on at least one embodiment of the pixel circuit shown in Figure 10C, the light-emitting element is an organic light-emitting diode O1, the driving circuit includes a driving transistor T0, the data writing circuit includes a first transistor T1, the reset circuit includes a second transistor T2, the first light-emitting control circuit includes a third transistor T3, the second light-emitting control circuit includes a fourth transistor T4, the initialization circuit includes a fifth transistor T5, the first energy storage circuit includes a first capacitor C1, and the second energy storage circuit includes a second capacitor C2.

[0281] The gate of DT is electrically connected to the second node N2, the source of DT is electrically connected to the first node N1, and the drain of DT is electrically connected to the third node N3.

[0282] The gate of T1 is electrically connected to the first scan terminal G1, the source of T1 is electrically connected to the data line DL, and the drain of T1 is electrically connected to the second node N2.

[0283] The gate of T2 is electrically connected to the second scan terminal G2, the source of T2 is connected to the reference voltage Vref, and the drain of T2 is electrically connected to the second node N2.

[0284] The gate of T3 is electrically connected to the first light-emitting control terminal EM1, the source of T3 is electrically connected to the power supply voltage terminal ELVDD, and the drain of T3 is electrically connected to the first node N1.

[0285] The gate of T4 is electrically connected to the second light-emitting control terminal EM2, the source of T4 is electrically connected to the third node N3, and the drain of T4 is electrically connected to the anode of O1.

[0286] The gate of T5 is electrically connected to the third scan terminal G3, the source of T5 is electrically connected to the initial voltage terminal AR, and the drain of T5 is electrically connected to the anode of O1.

[0287] The first end of C1 is electrically connected to N2, the second end of C1 is electrically connected to N3, the first end of C2 is electrically connected to N3, and the second end of C2 is electrically connected to the anode of O1.

[0288] The cathode of O1 is electrically connected to the first voltage terminal V1.

[0289] In at least one embodiment shown in Figure 10E, the initial control terminal is the third scanning terminal G3.

[0290] Optionally, the first voltage terminal can be a low voltage terminal.

[0291] Figure 11 is a timing diagram of at least one embodiment of the sub-pixel shown in Figure 10E.

[0292] As shown in Figure 12, at least one embodiment of the pixel circuit includes a driving transistor T0, a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a first capacitor C1, and a second capacitor C2.

[0293] In Figure 12, G1 is the first scanning terminal, G2 is the second scanning terminal, G3 is the third scanning terminal, G4 is the fourth scanning terminal, EM1 is the first light emission control terminal, EM2 is the second light emission control terminal, N1 is the first node, N2 is the second node, N3 is the third node, N4 is the fourth node, and N5 is the fifth node; DL is the data line, Vref is the reference voltage, ELVDD is the power supply voltage terminal, AR is the initial voltage terminal, and V1 is the first voltage terminal.

[0294] In Figure 12, T0 is a dual-gate transistor.

[0295] In at least one embodiment of the driving circuit shown in FIG12, the driving circuit includes a driving transistor T0, and the initialization circuit includes a fifth transistor T5. As shown in FIG13, at least one embodiment of the pixel circuit includes a driving transistor T0, a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a first capacitor C1, and a second capacitor C2.

[0296] In Figure 13, the terminal labeled Gt is the scanning terminal, the terminal labeled Rst1 is the first reset terminal, the terminal labeled Rst2 is the second reset terminal, the terminal labeled Rst3 is the third reset terminal, the terminal labeled EM1 is the first light emission control terminal, the terminal labeled EM2 is the second light emission control terminal, the terminal labeled N1 is the first node, the terminal labeled N2 is the second node, the terminal labeled N3 is the third node, the terminal labeled N4 is the fourth node, and the terminal labeled N5 is the fifth node; the terminal labeled DL is the data line, the terminal labeled Vref is the reference voltage, the terminal labeled ELVDD is the power supply voltage terminal, the terminal labeled AR is the initial voltage terminal, and the terminal labeled V1 is the first voltage terminal.

[0297] In at least one embodiment of the driving circuit shown in FIG13, the driving circuit includes a driving transistor T0 and the initialization circuit includes a sixth transistor T6.

[0298] As shown in Figure 14, at least one embodiment of the pixel circuit includes a driving transistor T0, a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a first capacitor C1, and a second capacitor C2.

[0299] In Figure 14, the terminal labeled Gt is the scanning terminal, the terminal labeled SC1 is the first control terminal, the terminal labeled SC2 is the second control terminal, the terminal labeled EM1 is the first light emission control terminal, the terminal labeled EM2 is the second light emission control terminal, the terminal labeled N1 is the first node, the terminal labeled N2 is the second node, the terminal labeled N3 is the third node, and the terminal labeled N4 is the fourth node; the terminal labeled DL is the data line, the terminal labeled Vref is the reference voltage, the terminal labeled ELVDD is the power supply voltage terminal, the terminal labeled AR is the initial voltage terminal, and the terminal labeled V1 is the first voltage terminal.

[0300] In Figures 13 and 14, T0 is a dual-gate transistor.

[0301] In at least one embodiment of the pixel circuit shown in FIG14, the driving circuit includes a driving transistor T0, and the initialization circuit includes a fifth transistor T5.

[0302] As shown in Figure 15, at least one embodiment of the pixel circuit includes a driving transistor T0, a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a first capacitor C1, and a second capacitor C2.

[0303] In Figure 15, the terminal labeled Gt is the scanning terminal, the terminal labeled CS1 is the first control signal terminal, the terminal labeled CS2 is the second control signal terminal, the terminal labeled CS3 is the third control signal terminal, the terminal labeled Rst is the reset terminal, the terminal labeled EM is the light emission control terminal, the terminal labeled N1 is the first node, the terminal labeled N2 is the second node, the terminal labeled N3 is the third node, and the terminal labeled N4 is the fourth node; the terminal labeled DL is the data line, the terminal labeled Vref is the reference voltage, the terminal labeled VDD is the high voltage terminal, the terminal labeled AR is the initial voltage terminal, and the terminal labeled V1 is the first voltage terminal.

[0304] In at least one embodiment of the pixel circuit shown in FIG15, the driving circuit includes a driving transistor T0, and the initialization circuit includes a fourth transistor T4.

[0305] The above description represents the preferred embodiments of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles described herein, and these improvements and modifications should also be considered within the scope of protection of this disclosure.

Claims

1. A display adjustment method applied to a display device, the display device including a display panel, the display panel including pixels, and the pixels including a plurality of sub-pixels; The sub-pixel includes a light-emitting element, and the cathode of the light-emitting element is electrically connected to a first voltage terminal; The display adjustment method includes a debugging step; The debugging steps include: during the debugging phase, controlling the display panel to be at a specific temperature, providing a first predetermined grayscale voltage to the sub-pixel, adjusting the voltage value of the first voltage signal provided to the first voltage terminal, then detecting the display brightness of the display panel until the difference between the detected display brightness of the display panel and the first expected brightness is within the brightness difference range, and using the difference between the voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage, and recording it in the compensation voltage table.

2. The display adjustment method as described in claim 1, wherein, The display adjustment method further includes a display adjustment step set after the debugging step; The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel, obtaining a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated first voltage signal to the first voltage terminal; The voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensated voltage.

3. The display adjustment method as described in claim 2, wherein, The sub-pixel also includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively. The initialization circuit is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal. The debugging steps also include: During the debugging phase, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, so that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

4. The display adjustment method as described in claim 3, wherein, During the debugging phase, after recording the first compensation voltage in the first compensation voltage table, the debugging steps further include: A second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage and recorded in the compensation voltage table. The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

5. The display adjustment method as described in claim 4, wherein, The gray level value corresponding to the second predetermined gray level voltage is less than or equal to 32.

6. The display adjustment method as described in claim 4 or 5, wherein, The display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal; The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

7. The display adjustment method as described in claim 1, wherein, The display adjustment method includes N debugging steps, and the nth debugging step corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; The nth debugging phase includes the nth first debugging time period; The nth debugging step includes: During the nth first debugging period, the display panel is controlled to be at a specific temperature, the nth first predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the first voltage signal provided to the first voltage terminal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth first expected brightness is within the brightness difference range. The difference between the voltage value of the first voltage signal and the first standard voltage value is used as the nth first compensation voltage and recorded in the compensation voltage table. The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

8. The display adjustment method as described in claim 7, wherein, The display adjustment method further includes a display adjustment step set after the debugging step; The display adjustment step includes: during the display stage, detecting the actual temperature of the display panel; based on the actual temperature and the display brightness adjustment range in which the display panel is located, obtaining a corresponding first compensation voltage from the compensation voltage meter, and providing a compensated first voltage signal to the first voltage terminal; the voltage value of the compensated first voltage signal is the sum of the first standard voltage value and the first compensation voltage.

9. The display adjustment method as described in claim 8, wherein, The sub-pixel also includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively. The initialization circuit is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal. The nth debugging step also includes: During the nth first debugging time period, when adjusting the voltage value of the first voltage signal, the voltage value of the initial voltage signal is adjusted accordingly, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

10. The display adjustment method as described in claim 9, wherein, The nth debugging phase also includes a second debugging period set after the nth first debugging period; The nth debugging step also includes: During the nth second debugging time period, the nth second predetermined grayscale voltage is provided to the sub-pixel, the voltage value of the initial voltage signal is adjusted, and then the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the nth second expected brightness is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the nth second compensation voltage and recorded in the compensation voltage table. The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

11. The display adjustment method as described in claim 10, wherein, The display adjustment step includes: during the display stage, obtaining a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the display brightness adjustment range of the display panel, and providing a compensated initial voltage signal to the initial voltage terminal; The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

12. The display adjustment method as described in claim 9, wherein, In the display panel, the pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage also includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M; The nth debugging step also includes: During the m-th second modulation sub-time period included in the n-th second debugging time period, the n-th second predetermined grayscale voltage is provided to the m-th sub-pixel in the pixel to adjust the voltage value of the initial voltage signal. Then, the display brightness of the display panel is detected until the difference between the detected display brightness of the display panel and the second expected brightness in the n-th row and m-th column is within the brightness difference range. The difference between the voltage value of the initial voltage signal and the second standard voltage value is used as the second compensation voltage in the n-th row and m-th column and recorded in the compensation voltage table. The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

13. The display adjustment method as described in claim 12, wherein, The display adjustment steps include: During the display phase, based on the actual temperature, the display brightness adjustment range of the display panel, and the color of the sub-pixel, a corresponding second compensation voltage is obtained from the compensation voltage meter, and a compensated initial voltage signal is provided to the initial voltage terminal of the sub-pixel with the corresponding color in the display panel. The voltage value of the compensated initial voltage signal is the sum of the second standard voltage value and the second compensated voltage.

14. A display adjustment module, applied to a display device, the display device including a display panel, the display panel including pixels, the pixels including a plurality of sub-pixels; the sub-pixels including light-emitting elements, the cathode of the light-emitting elements being electrically connected to a first voltage terminal; the display adjustment module including a temperature control module, a detection module, and an adjustment module; The temperature control module is used to control the display panel to a specific temperature during the debugging phase, and then provide a start adjustment signal to the adjustment module. The detection module is used to detect the brightness of the display panel after receiving the first detection control signal during the debugging phase, and to provide a first adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and to provide a first stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range. The adjustment module is used to, during the debugging phase, after receiving a start adjustment signal, provide a first predetermined grayscale voltage to the sub-pixel, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide a first detection control signal to the detection module. It is also used to, after receiving the first adjustment control signal, adjust the voltage value of the first voltage signal provided to the first voltage terminal, provide the first detection control signal to the detection module, and after receiving the first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the first compensation voltage in the compensation voltage table.

15. The display adjustment module as described in claim 14, wherein, The sub-pixel also includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively. The initialization circuit is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal. The adjustment module is further configured to, during the debugging phase, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

16. The display adjustment module as described in claim 15, wherein, The adjustment module is also used during the debugging phase to provide a second predetermined grayscale voltage to the sub-pixel after recording the first compensation voltage in the compensation voltage table, adjust the voltage value of the initial voltage signal, and provide a second detection control signal to the detection module. It is also used to adjust the voltage value of the initial voltage signal after receiving the second adjustment control signal, provide the second detection control signal to the detection module, and after receiving the second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the second compensation voltage in the compensation voltage table. The detection module is also used during the debugging phase to detect the brightness of the display panel after receiving the second detection control signal, and to provide a second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is not within the brightness difference range, and to provide a second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is within the brightness difference range. The gray level value corresponding to the second predetermined gray level voltage is less than the gray level value corresponding to the first predetermined gray level voltage.

17. The display adjustment module as described in claim 16, wherein, The gray level value corresponding to the second predetermined gray level voltage is less than or equal to 32.

18. The display adjustment module as described in claim 14, wherein, The display cycle includes N debugging stages; the nth debugging stage corresponds to the nth display brightness adjustment range; N is an integer greater than 1, and n is a positive integer less than or equal to N; the nth debugging stage includes the nth first debugging time period; The adjustment module further includes a range control circuit, which is used to control the display panel to operate within the nth display brightness adjustment range during the nth debugging phase. The temperature control module is used to control the display panel to a specific temperature during the nth first debugging period, and then provide the adjustment module with an nth start adjustment signal; The detection module is used to detect the brightness of the display panel after receiving the nth first detection control signal during the nth first debugging time period, and to provide the nth first adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and to provide the nth first stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the first expected brightness is within the brightness difference range. The adjustment module is used to provide the sub-pixel with the nth first predetermined grayscale voltage after receiving the nth start adjustment signal during the nth first debugging time period, adjust the voltage value of the first voltage signal provided to the first voltage terminal, and provide the nth first detection control signal to the detection module. It is also used to adjust the voltage value of the first voltage signal provided to the first voltage terminal after receiving the nth first adjustment control signal, provide the nth first detection control signal to the detection module, and after receiving the nth first stop adjustment signal, record the difference between the current voltage value of the first voltage signal and the first standard voltage value as the nth first compensation voltage in the compensation voltage table. The nth first predetermined grayscale voltage is the first predetermined grayscale voltage corresponding to the first predetermined grayscale value within the nth display brightness adjustment range. Within the nth display brightness adjustment range, the highest display brightness of the display panel is the nth highest brightness.

19. The display adjustment module as described in claim 18, wherein, The sub-pixel also includes an initialization circuit, which is electrically connected to an initial control terminal, an initial voltage terminal, and the anode of the light-emitting element, respectively. The initialization circuit is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal. The adjustment module is further configured to, during the nth first debugging time period, adjust the voltage value of the initial voltage signal accordingly when adjusting the voltage value of the first voltage signal, such that the difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.

20. The display adjustment module as described in claim 19, characterized in that, The nth debugging phase also includes a second debugging period set after the nth first debugging period; The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth second detection control signal, and after receiving the nth second stop adjustment signal, record the difference between the current initial voltage signal and the second standard voltage value as the nth second compensation voltage in the compensation voltage table. The detection module is also used to detect the brightness of the display panel after receiving the nth second detection control signal during the nth second debugging time period, and to provide the nth second adjustment control signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is not within the brightness difference range, and to provide the nth second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the nth second expected brightness is within the brightness difference range. The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

21. The display adjustment module as described in claim 19, wherein, The pixel includes M sub-pixels with different colors; M is an integer greater than 1; the nth debugging stage also includes an nth second debugging time period set after the nth first debugging time period; the nth second debugging time period includes M second modulation sub-time periods; m is a positive integer less than or equal to M; The adjustment module is further configured to provide the sub-pixel with the nth second predetermined grayscale voltage during the mth second modulation sub-time period included in the nth second debugging time period, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second adjustment control signal, adjust the voltage value of the initial voltage signal, provide the detection module with the nth row and mth column second detection control signal, and after receiving the nth row and mth column second stop adjustment signal, record the difference between the current initial voltage signal voltage value and the second standard voltage value as the nth row and mth column second compensation voltage in the compensation voltage table; The detection module is further configured to, after receiving the second detection control signal in the nth row and mth column during the mth second modulation sub-time period included in the nth second debugging time period, detect the brightness of the display panel, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is not within the brightness difference range, provide the second adjustment control signal in the nth row and mth column to the adjustment module, and when the difference between the brightness of the display panel and the second expected brightness in the nth row and mth column is within the brightness difference range, provide the second stop adjustment signal in the nth row and mth column to the adjustment module. The grayscale value corresponding to the nth second predetermined grayscale voltage is less than the grayscale value corresponding to the nth first predetermined grayscale voltage.

22. A display device, comprising a display panel, a temperature detector, and a control circuit; the control circuit storing a compensation voltage meter; the compensation voltage meter recording a temperature and a first compensation voltage corresponding to the temperature; The display panel includes pixels, and each pixel includes a plurality of sub-pixels arranged in a row and column array; each sub-pixel includes a light-emitting element and a pixel circuit, and the cathode of the light-emitting element is electrically connected to a first voltage terminal; The temperature detector is used to detect the actual temperature of the display panel and provide the actual temperature to the control circuit; The control circuit is used to obtain a corresponding first compensation voltage from the compensation voltage meter according to the actual temperature, and to provide a compensated first voltage signal to the first voltage terminal according to the first compensation voltage.

23. The display device as claimed in claim 22, wherein, The compensation voltage meter also records a second compensation voltage corresponding to the temperature; the pixel circuit also includes an initialization circuit, which is electrically connected to the initial control terminal, the initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal; The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to provide a compensated initial voltage signal to the initial voltage terminal according to the second compensation voltage.

24. The display device as claimed in claim 23, wherein, The control circuit includes a display driver chip and a power management chip; The display driver chip is used to obtain a corresponding first compensation voltage and a corresponding second compensation voltage from the compensation voltage meter according to the actual temperature, and to obtain a compensated first voltage signal according to the first compensation voltage, and to provide the compensated first voltage signal to the power management chip. According to the second compensation voltage, it obtains a compensated initial voltage signal and provides the compensated initial voltage signal to the initial voltage terminal. The power management chip is used to provide the compensated first voltage signal to the first voltage terminal.

25. The display device as claimed in claim 22, wherein, The compensation voltage meter records the temperature, the display brightness adjustment range, and the first compensation voltage corresponding to the temperature and the display brightness adjustment range. The control circuit is used to obtain a corresponding first compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated first voltage signal to the first voltage terminal based on the first compensation voltage.

26. The display device as claimed in claim 25, wherein, The compensation voltage meter also records a second compensation voltage corresponding to the temperature and display brightness adjustment range; the sub-pixel also includes an initialization circuit, which is electrically connected to the initial control terminal, the initial voltage terminal and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal; The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature and the actual display brightness adjustment range of the display panel, and to provide a compensated initial voltage signal to the initial voltage terminal based on the second compensation voltage.

27. The display device as claimed in claim 25, wherein, In the display panel, each pixel includes M sub-pixels with different colors; M is an integer greater than 1; the compensation voltage meter also records a second compensation voltage corresponding to the temperature, the display brightness adjustment range, and the color of the sub-pixel; each sub-pixel also includes an initialization circuit, which is electrically connected to the initial control terminal, the initial voltage terminal, and the anode of the light-emitting element, respectively, and is used to write the initial voltage signal provided by the initial voltage terminal into the anode of the light-emitting element under the control of the initial control signal provided by the initial control terminal; The control circuit is used to obtain a corresponding second compensation voltage from the compensation voltage meter based on the actual temperature, the actual display brightness adjustment range of the display panel, and the color of the sub-pixel, and to provide a compensated initial voltage signal to the initial voltage terminal of the corresponding sub-pixel based on the second compensation voltage.

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