Display device, display method and display panel

Abstract

The invention provides a display device, a display method and a display panel. The display device comprises the display panel and a control circuit. The display panel comprises a plurality of pixel units and a temperature sensor; each pixel unit comprises a plurality of sub-pixels, each sub-pixel comprises a light-emitting device and a pixel circuit, and the pixel circuit is connected to the temperature sensor; the temperature sensor is used for detecting the target temperature of the pixel unit; and the control circuit is electrically connected with the plurality of pixel units and is used for querying a preset calibration compensation table based on input initial image data and target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixels at the target temperature so as to perform brightness compensation on the initial image data to obtain to-be-displayed target image data. The temperature of the pixel unit is detected in real time through the temperature sensor, and dynamic brightness compensation is performed on the image data in combination with the calibration compensation table, so that sub-pixel brightness deviation caused by temperature change is effectively eliminated, the problem of display color cast is solved, and the display quality is improved.

Description

Technical Field

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

[0002] The manufacturing process for organic electroluminescence display (OLED) panels is complex, requiring the deposition of multiple layers of thin films made of organic and inorganic materials and involving a variety of film-forming equipment. In active-matrix organic light-emitting diode (AMOLED) display panels, the luminous efficiency of red, green, and blue sub-pixels varies significantly due to the different properties of the luminescent materials.

[0003] As the ambient temperature changes or the sub-pixel's continuous luminescence time increases, the operating temperature of each sub-pixel will fluctuate. This temperature change will cause the threshold voltage of the driving thin film transistor (TFT) to shift, and the leakage current of the light-emitting device (EL) will also change accordingly. These factors work together to cause the actual luminance of the sub-pixel to deviate from the preset value. In particular, under different temperature conditions, the chromaticity coordinates originally debugged at the calibration temperature (such as 25°C) will show obvious deviations. Specifically, the actual display components of each sub-pixel of the three primary colors (Red, Green, Blue, RGB) are inconsistent with the theoretical components set during calibration, resulting in objective errors in the displayed color and differences in subjective perception, seriously affecting the color reproduction ability and overall display quality of the display device. Summary of the Invention

[0004] The embodiments of the present application provide a display device, a display method, and a display panel to solve the technical problem of display color shift caused by temperature changes, and have the advantage of improving display quality.

[0005] In a first aspect, an embodiment of the present application provides a display device, comprising:

[0006] A display panel, the display panel comprising a plurality of pixel units and a temperature sensor; each of the pixel units comprising a plurality of sub-pixels, the sub-pixels comprising a light-emitting device and a pixel circuit, the pixel circuit being connected to the temperature sensor; the temperature sensor being configured to detect a target temperature of the pixel unit;

[0007] A control circuit is electrically connected to the plurality of pixel units, and the control circuit is used to query a preset calibration compensation table based on the input initial image data and the target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, so as to perform brightness compensation on the initial image data to obtain target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0008] In a second aspect, an embodiment of the present application provides a display method, which is applied to the above-mentioned display device. The method includes:

[0009] Based on the input initial image data and the target temperature of the pixel unit detected by the temperature sensor, a preset calibration compensation table is queried to obtain the target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, so as to perform brightness compensation on the initial image data and obtain the target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0010] In a third aspect, the display panel provided by the embodiment of the present application includes a plurality of pixel units and a temperature sensor; each of the pixel units includes a plurality of sub-pixels, and the sub-pixels include a light-emitting device and a pixel circuit, and the pixel circuit is connected to the temperature sensor; the temperature sensor is used to detect the target temperature of the pixel unit; a preset calibration compensation table is queried based on the input initial image data and the target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixels at the target temperature, so as to perform brightness compensation on the initial image data to obtain target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0011] In summary, the display device, display method and display panel provided by the present application detect the temperature of the pixel unit in real time through a temperature sensor and perform dynamic brightness compensation on the image data in combination with a calibration compensation table, effectively eliminating the sub-pixel brightness deviation caused by temperature changes, thereby solving the display color deviation problem and having the advantage of improving display quality. Specifically, the target temperature of the pixel unit is detected by a temperature sensor, and the control circuit queries the preset calibration compensation table based on the input initial image data and the target temperature, obtains the target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, and performs brightness compensation on the initial image data to obtain the target image data to be displayed. This effectively solves the problem in the prior art that the brightness calibration parameters at a fixed temperature are used and cannot adapt to the dynamic temperature environment, resulting in the display color deviation problem caused by temperature changes, ensures the accuracy and consistency of the displayed colors under different temperature environments, and improves the color reproduction ability and visual experience of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the drawings described below are only used to illustrate some embodiments of the present invention, and those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0013] Figure 1 A schematic diagram of a display device provided in an embodiment of the present application.

[0014] Figure 2 A schematic diagram of a display panel provided in an embodiment of the present application.

[0015] Figure 3 A schematic diagram of a pixel circuit in a display panel provided in an embodiment of the present application.

[0016] Figure 4 Schematic diagram of an application scenario of the display device in an embodiment of the present application.

[0017] Figure 5 Schematic diagram of the structure of the control circuit in the embodiment of the present application.

[0018] Figure 6 Schematic diagram of the application scenario of the control circuit in the embodiment of the present application.

[0019] Figure 7 FIG. 1 is a schematic diagram of coefficients for RGB data compensation at different temperatures in an embodiment of the present application.

[0020] Figure 8 FIG2 is a schematic diagram showing the corresponding brightness of RGB pixels and the calibration results at different temperatures in an embodiment of the present application.

[0021] Figure 9Schematic diagram of the process of operating a display device in an embodiment of the present application.

[0022] Figure 10 Schematic diagram of IV curves of R luminescent material at different temperatures in the embodiments of the present application.

[0023] Figure 11 Schematic diagram of IV curves of G luminescent material at different temperatures in an embodiment of the present application.

[0024] Figure 12 Schematic diagram of IV curves of light-emitting material B at different temperatures in an embodiment of the present application.

[0025] Figure 13 This is a schematic diagram of a temperature sensor implementation method in an embodiment of the present application.

[0026] Figure 14 Schematic diagram of the corresponding relationship between temperature and output voltage when simulating different temperatures in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] The terms "first," "second," and the like in the present invention are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or modules is not limited to the listed steps or modules but may optionally include steps or modules not listed, or may optionally include other steps or modules inherent to the process, method, product, or apparatus.

[0029] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The present application provides a display device, which includes but is not limited to the following embodiments and combinations of the following embodiments.

[0031] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, Figure 1 A schematic diagram of a display device provided in an embodiment of the present application; Figure 2 A schematic diagram of a display panel provided in an embodiment of the present application; Figure 3 A schematic diagram of a pixel circuit in a display panel provided in an embodiment of the present application; the display panel provided in an embodiment of the present application may be, for example, an organic light emitting diode (OLED) display panel, a mini-LED display panel, or a micro-LED display panel. The display panel may include a source driver circuit, a gate driver circuit, a timing controller, a light controller, a power management chip, a substrate, a data line for transmitting a data signal DATA, a scan line for transmitting a scan signal SCAN, a power line for transmitting a voltage VDD at the positive end of the power line or a voltage VSS at the negative end of the power line, a light control signal line for transmitting a light control signal EM, a pixel array, an encapsulation layer, a polarizer, a color filter, and the like.

[0032] The substrate may be, for example, a glass substrate, a flexible substrate (e.g., a polyimide substrate), etc. The pixel array is composed of a plurality of pixel units arranged in rows and columns, forming a plurality of pixel rows arranged along the row direction and a plurality of pixel columns arranged along the column direction, each pixel row and each pixel column includes a plurality of pixel units, each pixel unit includes a plurality of sub-pixels, and the sub-pixels include light-emitting devices and pixel circuits. For ease of description, pixel rows and pixel columns may also be referred to as "rows" and "columns" hereinafter. Taking the display panel as an OLED display panel as an example, the pixel unit may include an organic light-emitting device and a pixel driving circuit. The pixel driving circuit may include a driving transistor, which is used to control the brightness of the corresponding organic light-emitting device in the display panel. In an actual pixel unit, the driving transistor may include but is not limited to a thin film transistor (TFT) of low temperature polycrystalline silicon (LTPS) and a metal oxide semiconductor. The TFT may adopt a dual-gate structure, and the organic light-emitting device is electrically connected to the first electrode or the second electrode of the TFT. Organic light-emitting devices may include a light-emitting layer, an electron transport layer, a hole transport layer, a cathode and an anode, etc. Different organic materials can emit light of different wavelengths to achieve full-color display. The encapsulation layer includes an organic / inorganic alternating multi-layer structure. The gate driver circuit (GOA, Gate driver On Array) is mainly used to scan and drive the pixel rows. For example, the GOA circuit may include cascaded gate driver units, wherein each level of gate driver unit corresponds to controlling one or more pixel rows to achieve the gating of the pixel units. In some embodiments, the GOA may adopt unilateral drive or bilateral drive for multiple pixel rows, wherein the unilateral drive may be to arrange the gate driver unit only on one side (such as the left or right side), and drive the multiple pixel rows line by line in a cascade manner. Bilateral drive may be to arrange the driver units on both the left and right sides of the multiple pixel rows, and drive the multiple pixel rows line by line through the cooperation of both sides. The source driver circuit is used to provide data signals to the pixel units. The timing controller is used to receive external input image data and synchronization signals, and generate the signals required by the gate driver circuit and the source driver circuit. The power management chip is used to provide the required operating voltage for each part of the display panel. It should be noted that, Figure 2 This is an exemplary schematic diagram, and the connection relationship of the components shown is only used to explain the functional logical relationship of the display panel, rather than to limit the actual physical structure.

[0033] In one embodiment, Figure 1 and Figure 3As shown, the display device 100 includes a display panel and a control circuit. The display panel includes a plurality of pixel units PX and a temperature sensor. Each pixel unit PX includes a plurality of sub-pixels, each of which includes a light-emitting device EL and a pixel circuit. The pixel circuit is connected to the temperature sensor. The temperature sensor is used to detect the target temperature of the pixel unit PX.

[0034] The control circuit is electrically connected to the plurality of pixel units PX and is configured to query a preset calibration compensation table based on input initial image data and a target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixels at the target temperature, thereby performing brightness compensation on the initial image data to obtain the target image data to be displayed. The calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0035] It should be noted that the pixel unit can be the smallest display unit composed of multiple sub-pixels, and a full-color display can be achieved by combining red, green, and blue sub-pixels, with each sub-pixel independently controlling the luminous brightness. The temperature sensor can be an element capable of detecting temperature changes in the pixel unit, such as a temperature-sensitive transistor integrated in the pixel circuit, which reflects the temperature value through changes in the electrical signal. The control circuit can be an integrated circuit module with data processing functions, such as a driver chip including a temperature detection module and a compensation calculation unit, which is used to perform data query and compensation operations. The calibration compensation table can be a data structure that stores the correspondence between temperature and compensation parameters, such as recording the compensation coefficients of each sub-pixel at different temperatures in the form of a two-dimensional array, and establishing a temperature-compensation mapping relationship through experimental measurement.

[0036] Specifically, the temperature sensor monitors the operating temperature of the pixel unit in real time and transmits the temperature data to the control circuit. After receiving the initial image data, the control circuit searches the pre-stored calibration compensation table for the corresponding brightness calibration compensation data based on the current temperature. This data contains the compensation coefficient required for each sub-pixel at the target temperature and is used to adjust the brightness value of each sub-pixel in the initial image. The compensated target image data drives the pixel circuit, allowing the light-emitting device to still output accurate calibrated brightness under temperature changes, eliminating color shift caused by temperature. As an example, the calibration compensation table can be generated through experimental calibration, measuring the deviation of sub-pixel brightness from the reference value at different temperatures, and establishing a mapping relationship between temperature and compensation parameters.

[0037] This application integrates a temperature sensor in each pixel unit to obtain the operating temperature in real time and dynamically adjust the brightness data in combination with the compensation table, thus solving the color deviation problem caused by temperature changes. In the prior art, temperature detection usually uses an external sensor, which cannot accurately reflect the internal temperature of the pixel unit. This solution integrates the sensor in the pixel circuit, which improves the temperature detection accuracy and compensation accuracy. In this way, this application realizes real-time monitoring and dynamic compensation of the operating temperature of the display panel, effectively eliminating the difference in sub-pixel brightness attenuation caused by temperature changes. By calibrating the compensation table, the brightness output of each sub-pixel is accurately adjusted to ensure the accuracy and consistency of the displayed color under different temperature environments, thereby improving the color reproduction ability and visual experience of the display device.

[0038] In one embodiment, the multiple sub-pixels in each pixel unit include red sub-pixels, green sub-pixels and blue sub-pixels, and the red sub-pixels, green sub-pixels and blue sub-pixels respectively include corresponding light-emitting devices EL and pixel circuits, and each pixel circuit is connected to a temperature sensor.

[0039] Among them, the red sub-pixel, the green sub-pixel and the blue sub-pixel can be independent light-emitting units that realize the display of the three primary colors of red, green and blue through different light-emitting materials. Specifically, they can be implemented by organic light-emitting diodes or quantum dot light-emitting diodes, which are used to output light of different wavelengths respectively to mix and form the target color. The light-emitting device can be an element that converts an electrical signal into an optical signal. Specifically, it can be implemented by a multi-layer thin film structure, including an anode, an organic light-emitting layer and a cathode. Its luminous efficiency is significantly affected by temperature. The pixel circuit can be a circuit module that controls the driving current of the light-emitting device. Specifically, it can be implemented by a driving circuit composed of a thin film transistor and a capacitor, which is used to adjust the brightness of the light-emitting device according to the data signal. The temperature sensor can be an element that detects the temperature change of the pixel unit. Specifically, it can be implemented by a temperature-sensitive transistor or a thermistor, which is used to monitor the temperature change of the area where the sub-pixel is located in real time.

[0040] Specifically, the pixel circuits of the red, green, and blue sub-pixels are independently connected to the temperature sensors, so that the temperature data of each sub-pixel can be collected separately. When the temperature sensor detects a temperature change in the pixel unit, the control circuit queries the calibration compensation table based on the temperature data corresponding to each sub-pixel to obtain the brightness calibration compensation coefficient that matches the temperature. For example, the driving current of the red sub-pixel will be dynamically adjusted based on the data fed back by its temperature sensor to offset the decrease in luminous efficiency caused by the increase in temperature. The brightness compensation of the green and blue sub-pixels is independently performed through the same mechanism to ensure that the brightness ratio of the three primary colors at different temperatures remains stable, thereby avoiding color shift.

[0041] By configuring each sub-pixel with an independently connected temperature sensor, this application is able to obtain accurate temperature data for each sub-pixel in real time, and then adjust the driving parameters in a targeted manner. For example, when the temperature of the blue sub-pixel is significantly higher than that of the red sub-pixel due to long-term high-brightness operation, its corresponding temperature sensor can independently trigger a compensation mechanism to avoid the compensation error caused by averaging temperature data in traditional solutions. In this way, this application solves the brightness imbalance problem caused by the different temperature sensitivities of red, green, and blue sub-pixels. Through independent temperature monitoring and compensation mechanisms, it ensures that the three primary colors maintain a preset brightness ratio under different temperature environments, thereby improving the accuracy and consistency of displayed colors.

[0042] In one embodiment, the brightness calibration compensation data further includes compensation reference brightness values ​​for the red, green, and blue sub-pixels at a preset temperature, and brightness calibration compensation coefficients corresponding to the red, green, and blue sub-pixels at different temperatures. The calibration compensation table further includes a mapping table including mapping relationships between brightness calibration compensation coefficients corresponding to different temperatures. The control circuit is further configured to generate the calibration compensation table based on the mapping table and the compensation reference brightness values.

[0043] The compensation reference brightness value may be a standard brightness reference value for red, green, and blue sub-pixels obtained through experimental measurement at a preset temperature. Specifically, this may be achieved by calibrating each sub-pixel in a constant temperature environment, and serves as a reference for brightness compensation when the temperature changes. The preset temperature may be determined based on actual conditions and is not limited herein. As an example, the preset temperature may be 25°C.

[0044] The brightness calibration compensation coefficient can be an adjustment ratio parameter of each sub-pixel relative to the compensated reference brightness value at different temperatures. It can be determined by collecting the ratio of the actual brightness of the sub-pixel to the reference brightness at different temperature points, and is used to quantify the degree of influence of temperature on the sub-pixel brightness.

[0045] The mapping table may be a database storing the relationship between temperature values ​​and corresponding brightness calibration compensation coefficients, and may be implemented in the form of a lookup table or a mathematical function to quickly match the compensation coefficient corresponding to the current temperature.

[0046] As an example, the brightness of red, green, and blue sub-pixels can be calibrated at a preset temperature to obtain a compensated reference brightness value. The deviation between the actual brightness of each sub-pixel and the reference brightness can be measured at different temperature points to generate a corresponding brightness calibration compensation coefficient. The mapping table records the correspondence between temperature and compensation coefficient, allowing the control circuit to directly query the corresponding compensation coefficient based on the detected target temperature, and then calculate the target brightness calibration compensation data at the target temperature in combination with the compensated reference brightness value. For example, when the temperature rises, the brightness calibration compensation coefficient of the red sub-pixel may decrease, while the coefficient of the blue sub-pixel may increase. The mapping table can quickly obtain these coefficient differences, thereby dynamically adjusting the drive signal of each sub-pixel to achieve brightness compensation.

[0047] By establishing a table of compensation reference brightness values ​​and calibration coefficients for each temperature point, this application can independently calibrate the brightness of red, green, and blue sub-pixels at each temperature point, thereby more accurately eliminating color shift problems caused by temperature changes. In this way, the brightness compensation parameters of each sub-pixel can be dynamically matched according to the real-time temperature detection, effectively solving the color shift problem caused by the difference in RGB sub-pixel luminous efficiency due to temperature changes, and significantly improving display brightness and color consistency.

[0048] In one embodiment, Figure 3 As shown, the pixel circuit includes a switching transistor TSCAN, a driving transistor TDR, and a storage capacitor CST; wherein,

[0049] A first electrode of the switch transistor TSCAN is used to receive the data signal DL, a second electrode of the switch transistor TSCAN is connected to the gate of the drive transistor TDR, and a gate of the switch transistor TSCAN is used to receive the first scan signal.

[0050] A first electrode of the driving transistor TDR is connected to the first power line ELVDD; a second electrode of the driving transistor TDR is connected to the anode of the light emitting device EL.

[0051] One end of the storage capacitor CST is connected to the gate of the driving transistor TDR, and the other end of the storage capacitor CST is connected to the second electrode of the driving transistor TDR to maintain the gate voltage of the driving transistor TDR in the light emitting phase.

[0052] The temperature sensor includes a temperature sensitive transistor TSENSE; a first electrode of the temperature sensitive transistor is connected to a second electrode of the driving transistor TDR, a second electrode of the temperature sensitive transistor is connected to a control circuit via a signal line, and a gate of the temperature sensitive transistor is used to receive a second scanning signal.

[0053] Among them, when the first scanning signal is at a valid level, the switching transistor TSCAN is turned on to write the data signal DL into the storage capacitor CST, and the driving transistor TDR generates a driving current according to the voltage of the storage capacitor CST to control the brightness of the corresponding light-emitting device EL; when the second scanning signal is at a valid level, the temperature-sensitive transistor is turned on to detect the target temperature of the pixel unit PX and transmit the target temperature to the control circuit through the signal line.

[0054] Among them, the switching transistor TSCAN can be a semiconductor device for controlling the writing of data signals, and can be specifically implemented by a low-temperature polysilicon thin-film transistor. Its conduction state is controlled by a first scanning signal, and the data signal is transmitted to the gate of the driving transistor when it is turned on. The driving transistor TDR can be a semiconductor device for generating a driving current, and can be specifically implemented by an oxide semiconductor transistor. Its gate voltage is maintained by a storage capacitor, so that a constant current is continuously output during the light-emitting phase. The temperature-sensitive transistor TSENSE can be a semiconductor device with temperature-sensitive characteristics, and can be specifically implemented by a doped polysilicon thin-film transistor. Its conduction current varies with temperature, and the pixel unit temperature is inferred by detecting the current value flowing through the signal line.

[0055] Specifically, in the data writing phase, the first scanning signal is set to an effective level, at which time the switching transistor TSCAN is turned on, and the data signal is transmitted to the gate of the driving transistor through the switching transistor and stored in the storage capacitor CST. The driving transistor TDR generates a driving current corresponding to the data signal according to the gate voltage, driving the light-emitting device to emit light. In the temperature detection phase, the second scanning signal is set to an effective level, and the temperature-sensitive transistor TSENSE is turned on. At this time, the voltage of the second electrode of the driving transistor TDR is transmitted to the signal line through the temperature-sensitive transistor TSENSE. Due to the current-temperature characteristics of the temperature-sensitive transistor TSENSE, the control circuit can accurately calculate the temperature of the pixel unit by measuring the change in the signal line current. This time-sharing control method ensures that temperature detection and data writing do not interfere with each other, and the storage capacitor CST continuously maintains the gate voltage of the driving transistor during the light-emitting phase to ensure brightness stability.

[0056] It should be noted that the specific number of sub-pixels in each pixel unit can be determined according to actual conditions and is not limited here. As an example, for example, for RGB three-color sub-pixels, each sub-pixel can include a TSENSE implementation. Alternatively, for RGBW four-color sub-pixels, a similar design to this embodiment can be adopted.

[0057] This application integrates a temperature-sensitive transistor inside the pixel circuit, directly connecting it to the second electrode of the driving transistor, and can sense the heat generated by the light-emitting device in real time. At the same time, a time-sharing scanning signal is used to control temperature detection and data writing, without the need to increase the number of transistors, ensuring detection accuracy while maintaining the compactness of the pixel circuit. In this way, real-time in-situ detection of pixel unit temperature is achieved, effectively solving the problems of threshold drift of the driving transistor and efficiency attenuation of the light-emitting device caused by temperature changes. By controlling data writing and temperature detection through time-sharing multiplexing of scanning signals, the circuit structure is simplified while the temperature detection accuracy is improved, providing accurate temperature parameters for subsequent brightness compensation, and significantly reducing the color deviation caused by temperature fluctuations.

[0058] As an example, Figure 4 Schematic diagram of an application scenario of the display device in the embodiment of the present application; Figure 4 As shown, the data output by the control circuit is displayed on the display panel after being displayed and scanned.

[0059] In one embodiment, Figure 5 This is a structural diagram of the control circuit in an embodiment of the present application. The control circuit includes a temperature detection module for obtaining a target temperature and initial image data; the target temperature includes the current temperature of the pixel unit PX and / or the ambient temperature of the pixel unit PX.

[0060] Among them, the temperature detection module can be a circuit unit for real-time monitoring of the temperature change of the pixel unit, which can be specifically implemented by a temperature sensor array or a temperature-sensitive transistor circuit to collect temperature data inside the pixel unit or the surrounding environment. The current temperature can be the temperature change caused by the heat generated by the pixel unit's own working state during the light-emitting process, which can be specifically implemented by detecting a temperature-sensitive element connected to the driving transistor, and is used to reflect the thermal effect of the sub-pixel under the actual working state. The ambient temperature can be the temperature of the external space where the pixel unit is located, which can be specifically implemented by detecting an independently set ambient temperature sensor, and is used to reflect the influence of external heat sources on the display effect. The calibration compensation table can be a database that stores brightness calibration compensation data under different temperature conditions, which can be specifically implemented by a lookup table or a mapping algorithm to establish a correspondence between temperature and compensation coefficient.

[0061] Specifically, the temperature detection module is connected to the temperature-sensitive transistor in the pixel unit through a signal line, and obtains the voltage change of the second electrode of the driving transistor in real time. The voltage change is linearly related to the operating temperature of the pixel unit. When only the current temperature or the ambient temperature is detected, the temperature detection module inputs a single temperature parameter into the calibration compensation table to match the corresponding brightness calibration compensation coefficient. When the current temperature and the ambient temperature are detected at the same time, the current temperature is preferably selected as the query basis because the heat generated by the pixel unit itself has a more direct impact on the performance of the light-emitting device. For example, in a high-temperature environment, if the pixel unit generates additional heat due to long-term operation, the current temperature may be higher than the ambient temperature. Using the current temperature for compensation can more accurately correct the deviation in the luminous brightness.

[0062] By dynamically selecting temperature parameters, the present application can flexibly adjust the compensation strategy according to the actual working conditions. For example, when the ambient temperature is stable but the pixel unit is locally overheated, the current temperature data is given priority to avoid insufficient compensation; when the ambient temperature fluctuates violently, the combination of two temperature parameters can enhance the robustness of the compensation. In this way, the problem of brightness drift caused by temperature changes is effectively solved, and more accurate brightness compensation is achieved by distinguishing the influence weights of the pixel unit's own temperature and the ambient temperature. For example, in a high-temperature working environment, when the pixel unit generates an additional temperature rise due to the current load, giving priority to compensation based on the current temperature can eliminate the brightness attenuation caused by the threshold voltage offset of the driving transistor, thereby maintaining the preset display color and brightness consistency.

[0063] In one embodiment, Figure 5 As shown, the control circuit also includes a calibration compensation table generation module, which is connected to the temperature detection module; wherein,

[0064] The temperature detection module is also used to obtain the current temperature and ambient temperature of the pixel unit at different operating temperature points;

[0065] The generating module is used to generate a first adjustment coefficient of the red sub-pixel, a second adjustment coefficient of the green sub-pixel, and a third adjustment coefficient of the blue sub-pixel according to the current temperature and the ambient temperature corresponding to each temperature point.

[0066] The generation module can be a data processing unit for generating adjustment coefficients corresponding to each sub-pixel. Specifically, it can be implemented using an integrated circuit or programmable logic device. It receives data from multiple temperature points collected by the temperature detection module and calculates compensation coefficients at different temperatures in combination with a preset algorithm. The temperature detection module can be a sensor network for real-time monitoring of temperature changes in pixel units. Specifically, it can be implemented using a distributed temperature sensor array. By periodically collecting the current temperature and ambient temperature, it provides dynamic temperature data to the generation module. The temperature points can be pre-set temperature conditions for calibrating compensation parameters. Specifically, they can be multiple discrete temperature values ​​set in a laboratory environment, such as 25°C, 35°C, 45°C, etc., used to establish a corresponding relationship between temperature and compensation coefficients. The adjustment coefficient can be a compensation parameter used to correct the sub-pixel brightness output. Specifically, it can be a proportional factor calculated based on a mathematical model of the impact of temperature changes on luminous efficiency. The actual driving signal is obtained by multiplying the reference brightness value by the adjustment coefficient.

[0067] Specifically, during the operation of the display device, the temperature detection module can continuously collect temperature data of the pixel unit under different working states, including the current temperature generated by its own light emission and the ambient temperature. When the display device enters the calibration mode, the generation module receives multiple temperature point data recorded by the temperature detection module, and each temperature point may contain a data pair consisting of the current temperature and the ambient temperature. For the red sub-pixel, the generation module analyzes the attenuation curve of its luminous brightness as the temperature changes, and fits the functional relationship between the first adjustment coefficient and the temperature change through the least squares method. The green sub-pixel and the blue sub-pixel use the same method to generate the corresponding second and third adjustment coefficients, respectively, and finally form a compensation parameter set covering the operating temperature range. These adjustment coefficients are stored in a non-volatile memory to form a calibration compensation table containing a temperature-compensation coefficient mapping relationship.

[0068] This application establishes a multi-dimensional temperature compensation model by simultaneously collecting dual parameters of the current temperature and the ambient temperature, which can accurately characterize the differentiated effects of temperature gradients on RGB sub-pixels. Compared with a single temperature detection method, this technology effectively solves the problem of local temperature distortion caused by heat conduction between adjacent pixels and significantly improves the accuracy of the compensation parameters. In this way, accurate modeling of the operating temperature field of the display device is achieved, and by establishing a compensation coefficient generation mechanism based on dual temperature parameters, the combined effects of ambient temperature and pixel self-heating are effectively eliminated. This solution can dynamically correct the brightness output of each sub-pixel under different temperature conditions, ensuring that the ratio of the three primary colors of RGB remains stable within a wide temperature range, thereby significantly reducing color cast and improving the color consistency of the display.

[0069] In one embodiment, Figure 5As shown, the control circuit also includes a calibration module for the chromaticity and brightness of the red, green, and blue sub-pixels, and the calibration module is connected to the generation module. The calibration module is configured to determine the display brightness based on the first adjustment coefficient, the second adjustment coefficient, the third adjustment coefficient, and the compensation reference brightness values ​​of the red, green, and blue sub-pixels at a preset temperature; compare the display brightness with the brightness of the corresponding red, green, and blue sub-pixels during display calibration and debugging in an environment with a preset temperature; and if the display brightness corresponding to the red, green, and blue sub-pixels is consistent with the debug brightness, store the first adjustment coefficient, the second adjustment coefficient, and the third adjustment coefficient in a calibration compensation table.

[0070] The calibration module can be a hardware or software unit for performing dynamic matching of chromaticity and brightness. Specifically, it can be implemented using an embedded processor combined with a preset algorithm. Its function is to verify the theoretical compensation value in real time with the actual display effect to ensure the accuracy of the compensation data. The adjustment coefficient can be a correction parameter for the brightness deviation of each sub-pixel at different temperatures. Specifically, it can be measured through a temperature gradient experiment and used to quantify the impact of temperature on luminous efficiency. The compensation reference brightness value can be a reference value of the brightness of each sub-pixel pre-calibrated by optical measurement equipment under a standard temperature environment, such as obtained by a spectrophotometer under 25°C conditions, which serves as the reference data source for temperature compensation. The brightness of the display calibration can be the brightness target value obtained by standardizing the sub-pixels manually or automatically in a preset temperature environment, such as the brightness data collected after using a standard image signal to drive the sub-pixels to emit light in a constant temperature chamber.

[0071] Specifically, the generation module generates adjustment coefficients for red, green, and blue sub-pixels based on the current temperature and ambient temperature at multiple temperature points collected by the temperature detection module. The calibration module combines the adjustment coefficients with the compensation reference brightness value to calculate the display brightness of each sub-pixel at the target temperature and compares this display brightness with the debug brightness obtained through calibration and debugging under a preset temperature environment. When the difference between the display brightness and the debug brightness is within a preset error range, the adjustment coefficient is determined to be valid, and the temperature data associated with the adjustment coefficient is stored in the calibration compensation table.

[0072] This application establishes a mapping relationship between adjustment coefficients and temperature conditions, and verifies the validity of compensation data at multiple temperature points, enabling the compensation table to cover a wider range of temperature conditions, thereby improving the consistency of display brightness and color. In this way, dynamic compensation calibration of sub-pixel brightness deviations caused by temperature changes is achieved. The accuracy of the compensation coefficients is verified by comparing the actual difference between the displayed brightness and the adjusted brightness, ensuring the applicability of the compensation data under different temperature conditions, effectively suppressing color shifts caused by changes in the efficiency of organic light-emitting materials or thin-film transistor bias, and improving the color reproduction ability of the display panel.

[0073] As an example, Figure 6 Schematic diagram of the application scenario of the control circuit in the embodiment of the present application; Figure 6 As shown, the calibration module may include a chromaticity and brightness calibration module and a cumulative chromaticity and brightness consistency calibration module.

[0074] In one embodiment, the target brightness calibration compensation data includes a compensation reference brightness value of each sub-pixel at a preset temperature and a target brightness calibration compensation coefficient corresponding to each sub-pixel at a target temperature;

[0075] The control circuit is further configured to determine target compensation data based on the compensation reference brightness value and the target brightness calibration compensation coefficient, and perform brightness compensation on the initial image data according to the target compensation data to obtain target image data.

[0076] The compensation reference brightness value may be a sub-pixel standard brightness reference value determined through calibration and debugging at a preset temperature. Specifically, this may be achieved by calibrating the brightness of red, green, and blue sub-pixels in a preset temperature environment, serving as a reference for brightness compensation when the temperature changes. The target brightness calibration compensation coefficient may be a dynamically adjusted parameter of the sub-pixel brightness relative to the compensation reference brightness value at different temperatures. Specifically, this coefficient may be generated by measuring the ratio of the actual sub-pixel brightness to the reference brightness at different temperature points, and is used to reflect the degree of impact of temperature changes on the sub-pixel luminous efficiency.

[0077] Specifically, after obtaining the target temperature of the pixel unit detected by the temperature sensor, the control circuit extracts the target brightness calibration compensation coefficient corresponding to this temperature from the calibration compensation table, and performs a weighted calculation based on the compensation reference brightness value at the preset temperature to generate target compensation data for each sub-pixel. For example, when the target temperature is higher than the preset temperature, the brightness calibration compensation coefficient of the red sub-pixel may be less than 1, while the coefficient of the blue sub-pixel may be greater than 1. By multiplying the brightness value of the red sub-pixel in the initial image data by the corresponding coefficient and adding the offset of the compensation reference brightness value, dynamic correction of the brightness output is achieved. In this way, the brightness deviation of the sub-pixels at different temperatures is compensated in real time, ensuring that the displayed brightness and color are consistent with the calibration state at the preset temperature.

[0078] This application introduces a compensation reference brightness value and temperature-dependent calibration compensation coefficients to establish a multi-dimensional compensation model, which can more accurately eliminate the differential impact of temperature on RGB sub-pixels. This solves the color shift problem caused by inconsistent sub-pixel luminous efficiency due to temperature changes. The dynamic compensation mechanism ensures that the displayed brightness and color remain stable in different temperature environments, thereby improving the color consistency and image quality of the display device.

[0079] As an example, Figure 7 Schematic diagram of RGB data compensation coefficients at different temperatures in an embodiment of the present application; Figure 8 Schematic diagram of the brightness of RGB pixels corresponding to different temperatures and after calibration in an embodiment of the present application; Figure 9 A schematic diagram of a flow chart for operating a display device in an embodiment of the present application; Figure 10 Schematic diagram of IV curves of R luminescent material at different temperatures in an embodiment of the present application; Figure 11 Schematic diagram of IV curves of G luminescent material at different temperatures in an embodiment of the present application; Figure 12 This is a schematic diagram of the IV curves of the B luminescent material at different temperatures in the embodiment of the present application. According to the schematic diagrams of the relationship between temperature and various parameters reflected in the above figures, the relationship between the influence of temperature on sub-pixels can be obtained. Based on this, in this embodiment, the brightness values ​​of the RGB pixels at different temperatures can be detected first, and their values ​​can be compared with the target brightness and chromaticity. The RGB compensation coefficients of different areas can be confirmed. After confirming that the display effect is consistent with the target display effect, the ratio value of the RGB calibration is confirmed, and the output image data of the final calibration compensation coefficient is displayed, so that the display effect on the display device is stable, and the subjective and objective display effect evaluations are consistent. Solve problems such as uneven display or color deviation caused by the ambient temperature or the temperature of the display device. Specific applications can be combined with Figure 13 and Figure 14 To understand, Figure 13 A schematic diagram of a temperature sensor implementation method in an embodiment of the present application; Figure 14 This is a schematic diagram of the corresponding relationship between temperature and output voltage when simulating different temperatures in the embodiment of this application; Figure 13 middle,

[0080] In order to better illustrate the above-mentioned display device, the present application further provides a display method, which is applied to the above-mentioned display device, and the method includes:

[0081] Based on the input initial image data and the target temperature of the pixel unit detected by the temperature sensor, a preset calibration compensation table is queried to obtain the target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, so as to perform brightness compensation on the initial image data and obtain the target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0082] The calibration compensation table can be a database of pre-stored sub-pixel brightness compensation parameters at different temperatures. This can be implemented using a lookup table or hash map structure to quickly match temperature and compensation data. The brightness calibration compensation data can be a dataset containing a compensated reference brightness value and temperature-dependent calibration coefficients. This data can be generated by experimentally measuring the brightness deviation of sub-pixels at different temperatures and used to correct for temperature-induced brightness offsets. The target temperature can be the pixel unit's own temperature or the ambient temperature. This can be detected using a temperature-sensitive transistor or thermistor to reflect temperature variables that affect the performance of the light-emitting device.

[0083] Specifically, the method uses a temperature sensor to obtain the temperature information of the pixel unit in real time, and matches the sub-pixel brightness value in the initial image data with the compensation data at the corresponding temperature in the calibration compensation table. For example, when the pixel unit temperature is detected to be 45°C, the compensation coefficient for the red sub-pixel corresponding to this temperature in the calibration compensation table is 0.97, the green sub-pixel is 1.1, and the blue sub-pixel is 1.01. The original brightness value is multiplied by the corresponding coefficient to obtain the compensated target brightness value. The generation process of the calibration compensation table can include measuring the deviation between the actual brightness of the sub-pixels at different temperatures and the preset reference brightness in a laboratory environment, establishing a temperature-compensation coefficient mapping relationship and storing it in a table form.

[0084] This method establishes a temperature compensation mechanism that dynamically adjusts brightness output at different temperatures, ensuring that red subpixels maintain a certain tolerance to target brightness even in high-temperature environments. This effectively addresses the issues of subpixel brightness shift and chromaticity distortion caused by temperature fluctuations, significantly improving color consistency across displays at varying temperatures. By combining hardware detection with software compensation, this method achieves adaptive calibration of temperature-sensitive components, avoiding the complex manual recalibration required by traditional solutions.

[0085] In some specific embodiments, the brightness calibration compensation data further includes compensation reference brightness values ​​of red sub-pixels, green sub-pixels, and blue sub-pixels at a preset temperature and brightness calibration compensation coefficients corresponding to the red sub-pixels, the green sub-pixels, and the blue sub-pixels at different temperatures; the calibration compensation table further includes a mapping table; the mapping table includes a mapping relationship between the brightness calibration compensation coefficients corresponding to the different temperatures; and the method further includes:

[0086] The calibration compensation table is formed according to the mapping table and the compensated reference luminance value.

[0087] Among them, the compensation reference brightness value can be the reference brightness data of the red sub-pixel, green sub-pixel and blue sub-pixel obtained by an optical measuring device under preset temperature conditions. Specifically, it can be achieved by calibrating and measuring each sub-pixel in a standard darkroom environment using a spectrophotometer, and is used as a reference for brightness compensation when the temperature changes. The brightness calibration compensation coefficient can be an adjustment ratio parameter of the brightness of each sub-pixel relative to the compensation reference brightness value under different temperature conditions. Specifically, it can be calculated by simulating different temperature environments through a temperature control box and collecting sub-pixel brightness change data, and is used to quantify the degree of influence of temperature on the sub-pixel luminous efficiency. The mapping table can be a data structure that stores the association between different temperature values ​​and corresponding brightness calibration compensation coefficients. Specifically, it can be implemented in the form of a two-dimensional array or a hash table, and is used to quickly query the compensation coefficient at a specific temperature. The calibration compensation table can be a comprehensive data set that integrates the compensation reference brightness value, the brightness calibration compensation coefficient and the mapping relationship. Specifically, it can be stored in a non-volatile memory and is used to call the compensation parameters in real time during the display driving process.

[0088] Specifically, the brightness of the red sub-pixel, green sub-pixel, and blue sub-pixel is calibrated at a preset temperature to obtain a compensation reference brightness value. The display panel is placed at different temperature points through a temperature control device, and the brightness change data of each sub-pixel is measured respectively to calculate the corresponding brightness calibration compensation coefficient. The correspondence between the temperature value and the compensation coefficient is constructed as a mapping table, and then the mapping table is integrated with the compensation reference brightness value to form a calibration compensation table. During the display process, when the temperature sensor detects the actual temperature of the pixel unit, the control circuit queries the mapping table according to the actual temperature to obtain the corresponding compensation coefficient, combines the compensation reference brightness value to generate the target compensation data, and dynamically adjusts the brightness of the initial image data to eliminate the color deviation caused by temperature changes.

[0089] By establishing a calibration compensation table containing a temperature-compensation coefficient mapping, this method dynamically adjusts the compensation parameters of each sub-pixel for different temperatures, making the compensation process more responsive to the nonlinear effects of actual temperature variations on light-emitting devices. This enables dynamic brightness compensation based on temperature variations. By quickly matching the compensation coefficient at the current temperature using the mapping table, and combining it with a preset reference value, the brightness of each sub-pixel is precisely adjusted, effectively reducing the RGB luminous efficiency inconsistencies caused by temperature differences, thereby improving displayed color consistency.

[0090] The details of the display method can be found in the above embodiments and will not be repeated here.

[0091] The present application also provides a display panel, comprising a plurality of pixel units and a temperature sensor; each of the pixel units comprises a plurality of sub-pixels, the sub-pixels comprise a light-emitting device and a pixel circuit, and the pixel circuit is connected to the temperature sensor; a preset calibration compensation table is queried based on the input initial image data and the target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixels at the target temperature, so as to perform brightness compensation on the initial image data to obtain target image data to be displayed; the calibration compensation table comprises brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

[0092] In one embodiment, the multiple sub-pixels in each pixel unit include red sub-pixels, green sub-pixels and blue sub-pixels, and the red sub-pixels, green sub-pixels and blue sub-pixels respectively include corresponding light-emitting devices EL and pixel circuits, and each pixel circuit is connected to a temperature sensor.

[0093] In one embodiment, Figure 3 As shown, the pixel circuit includes a switching transistor TSCAN, a driving transistor TDR, and a storage capacitor CST; wherein,

[0094] A first electrode of the switch transistor TSCAN is used to receive the data signal DL, a second electrode of the switch transistor TSCAN is connected to the gate of the drive transistor TDR, and a gate of the switch transistor TSCAN is used to receive the first scan signal.

[0095] A first electrode of the driving transistor TDR is connected to the first power line ELVDD; a second electrode of the driving transistor TDR is connected to the anode of the light emitting device EL.

[0096] One end of the storage capacitor CST is connected to the gate of the driving transistor TDR, and the other end of the storage capacitor CST is connected to the second electrode of the driving transistor TDR to maintain the gate voltage of the driving transistor TDR in the light emitting phase.

[0097] The temperature sensor includes a temperature sensitive transistor TSENSE; a first electrode of the temperature sensitive transistor is connected to a second electrode of the driving transistor TDR, a second electrode of the temperature sensitive transistor is connected to a control circuit via a signal line, and a gate of the temperature sensitive transistor is used to receive a second scanning signal.

[0098] The details of the display panel can be found in the above embodiments and will not be repeated here.

[0099] The above is a detailed introduction to the display device, display method and display panel provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a plurality of pixel units and a temperature sensor; each of the pixel units comprising a plurality of sub-pixels, the sub-pixels comprising a light-emitting device and a pixel circuit, the pixel circuit being connected to the temperature sensor; the temperature sensor being configured to detect a target temperature of the pixel unit; A control circuit is electrically connected to the plurality of pixel units, and the control circuit is used to query a preset calibration compensation table based on the input initial image data and the target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, so as to perform brightness compensation on the initial image data to obtain target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

2. The display device according to claim 1, wherein The multiple sub-pixels in each pixel unit include a red sub-pixel, a green sub-pixel and a blue sub-pixel. The red sub-pixel, the green sub-pixel and the blue sub-pixel respectively include corresponding light-emitting devices and pixel circuits. Each pixel circuit is connected to one of the temperature sensors.

3. The display device according to claim 2, wherein: The brightness calibration compensation data further includes compensation reference brightness values ​​of the red sub-pixel, the green sub-pixel, and the blue sub-pixel at a preset temperature and brightness calibration compensation coefficients corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel at different temperatures; the calibration compensation table further includes a mapping table; The mapping table includes a mapping relationship between the brightness calibration compensation coefficients corresponding to the different temperatures. The control circuit is further configured to form the calibration compensation table according to the mapping table and the compensation reference brightness value.

4. The display device according to claim 2, wherein: The pixel circuit includes a switch transistor, a drive transistor, and a storage capacitor; wherein, The first electrode of the switch transistor is used to receive a data signal, the second electrode of the switch transistor is connected to the gate of the drive transistor, and the gate of the switch transistor is used to receive a first scan signal; The first electrode of the driving transistor is connected to the first power line; the second electrode of the driving transistor is connected to the anode of the light emitting device; One end of the storage capacitor is connected to the gate of the driving transistor, and the other end of the storage capacitor is connected to the second electrode of the driving transistor to maintain the gate voltage of the driving transistor in the light emitting stage; The temperature sensor includes a temperature-sensitive transistor; a first electrode of the temperature-sensitive transistor is connected to the second electrode of the driving transistor, the second electrode of the temperature-sensitive transistor is connected to the control circuit via a signal line, and a gate of the temperature-sensitive transistor is used to receive a second scanning signal; Among them, when the first scanning signal is at an effective level, the switching transistor is turned on to write the data signal into the storage capacitor, and the driving transistor generates a driving current according to the voltage of the storage capacitor to control the brightness of the corresponding light-emitting device; when the second scanning signal is at an effective level, the temperature-sensitive transistor is turned on to detect the target temperature of the pixel unit and transmit the target temperature to the control circuit through the signal line.

5. The display device according to claim 4, wherein: The control circuit includes a temperature detection module for acquiring the target temperature and the initial image data; the target temperature includes the current temperature of the pixel unit and / or the ambient temperature of the pixel unit.

6. The display device according to claim 5, wherein: The control circuit further includes a generation module for the calibration compensation table, and the generation module is connected to the temperature detection module; wherein, The temperature detection module is further used to obtain the current temperature and ambient temperature of the pixel unit when operating at different temperature points; The generating module is configured to generate a first adjustment coefficient for the red sub-pixel, a second adjustment coefficient for the green sub-pixel, and a third adjustment coefficient for the blue sub-pixel according to the current temperature and the ambient temperature corresponding to each temperature point.

7. The display device according to claim 6, wherein: The control circuit further includes a calibration module for the chromaticity and brightness of the red sub-pixel, the green sub-pixel, and the blue sub-pixel, and the calibration module is connected to the generation module; wherein, The calibration module is used to compare the display brightness determined according to the first adjustment coefficient, the second adjustment coefficient, the third adjustment coefficient and the compensation reference brightness values ​​of the red sub-pixel, the green sub-pixel and the blue sub-pixel at the preset temperature with the brightness of the corresponding red sub-pixel, the green sub-pixel and the blue sub-pixel displayed during calibration and debugging in the environment of the preset temperature; when the display brightness corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel is consistent with the debugging brightness, the first adjustment coefficient, the second adjustment coefficient and the third adjustment coefficient are stored in the calibration compensation table.

8. The display device according to any one of claims 1 to 7, characterized in that: The target brightness calibration compensation data includes a compensation reference brightness value of each sub-pixel at a preset temperature and a target brightness calibration compensation coefficient corresponding to each sub-pixel at the target temperature; The control circuit is further configured to determine target compensation data based on the compensation reference brightness value and the target brightness calibration compensation coefficient, and perform brightness compensation on the initial image data according to the target compensation data to obtain the target image data.

9. A display method, characterized in that: Applied to the display device according to any one of claims 1 to 8, the method comprises: Based on the input initial image data and the target temperature of the pixel unit detected by the temperature sensor, a preset calibration compensation table is queried to obtain the target brightness calibration compensation data corresponding to the sub-pixel at the target temperature, so as to perform brightness compensation on the initial image data and obtain the target image data to be displayed; the calibration compensation table includes brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

10. The display method according to claim 9, wherein: The brightness calibration compensation data further includes compensation reference brightness values ​​of the red sub-pixel, the green sub-pixel, and the blue sub-pixel at a preset temperature and brightness calibration compensation coefficients corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel at different temperatures; The calibration compensation table further includes a mapping table; the mapping table includes a mapping relationship between the brightness calibration compensation coefficients corresponding to the different temperatures; The method further comprises: The calibration compensation table is formed according to the mapping table and the compensated reference luminance value.

11. A display panel, characterized in that: It comprises a plurality of pixel units and a temperature sensor; each of the pixel units comprises a plurality of sub-pixels, the sub-pixels comprise a light-emitting device and a pixel circuit, and the pixel circuit is connected to the temperature sensor; the temperature sensor is used to detect the target temperature of the pixel unit; a preset calibration compensation table is queried based on the input initial image data and the target temperature to obtain target brightness calibration compensation data corresponding to the sub-pixels at the target temperature, so as to perform brightness compensation on the initial image data to obtain target image data to be displayed; the calibration compensation table comprises brightness calibration compensation data corresponding to different temperatures; the brightness calibration compensation data is used to describe the coefficient of the comparison difference between the sub-pixel and the corresponding target brightness and chromaticity.

12. The display panel according to claim 11, wherein: The multiple sub-pixels in each pixel unit include a red sub-pixel, a green sub-pixel and a blue sub-pixel. The red sub-pixel, the green sub-pixel and the blue sub-pixel respectively include corresponding light-emitting devices and pixel circuits. Each pixel circuit is connected to one of the temperature sensors.

13. The display panel according to claim 12, wherein: The pixel circuit includes a switch transistor, a drive transistor, and a storage capacitor; wherein, The first electrode of the switch transistor is used to receive a data signal, the second electrode of the switch transistor is connected to the gate of the drive transistor, and the gate of the switch transistor is used to receive a first scan signal; The first electrode of the driving transistor is connected to the first power line; the second electrode of the driving transistor is connected to the anode of the light emitting device; One end of the storage capacitor is connected to the gate of the driving transistor, and the other end of the storage capacitor is connected to the second electrode of the driving transistor to maintain the gate voltage of the driving transistor in the light emitting stage; The temperature sensor includes a temperature-sensitive transistor; a first electrode of the temperature-sensitive transistor is connected to the second electrode of the driving transistor, a second electrode of the temperature-sensitive transistor is connected to the signal line, and a gate of the temperature-sensitive transistor is used to receive a second scanning signal; Among them, when the first scanning signal is at an effective level, the switching transistor is turned on to write the data signal into the storage capacitor, and the driving transistor generates a driving current according to the voltage of the storage capacitor to control the brightness of the corresponding light-emitting device; when the second scanning signal is at an effective level, the temperature-sensitive transistor is turned on to detect the target temperature of the pixel unit and transmit the target temperature through the signal line.

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