Display screens and their image quality correction methods, devices, equipment and media

Abstract

This application relates to the field of display quality optimization technology for organic electroluminescent devices, specifically providing a display screen and its image quality correction method and apparatus, aiming to solve the problem of display screen temperature drift. To this end, the image quality correction method for the display screen of this application includes: obtaining the actual power supply internal resistance change rate of the display screen to be corrected; based on the actual power supply internal resistance change rate, using a preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index, obtaining the actual screen color deviation quantification index of the display screen to be corrected; based on the actual screen color deviation quantification index, determining the actual screen color deviation range of the display screen to be corrected; based on the actual screen color deviation range, using a preset mapping relationship between temperature, power supply voltage, and screen color deviation range, obtaining the target power supply voltage; and based on the target power supply voltage, correcting the screen image quality of the display screen to be corrected, effectively improving the automation and efficiency of the correction process and increasing the yield of the display screen.

Description

Technical Field

[0001] This application relates to the field of display image quality optimization technology for organic electroluminescent devices, specifically to a display screen and its image quality correction method, apparatus, equipment, and medium. Background Technology

[0002] Organic light-emitting diodes (OLEDs) have been widely used in mobile display terminals such as smartphones and wearable devices due to their unique advantages, including self-illumination, high contrast, fast response, and flexibility. As application scenarios become increasingly diverse, users have more stringent requirements for the stability of OLED display image quality.

[0003] In practical use, changes in ambient temperature significantly affect the light-emitting characteristics of OLEDs, a phenomenon known as "temperature drift." For example, in low-temperature environments, the screen often appears reddish or pinkish; while in high-temperature environments, the image tends to appear bluish or cool. When the ambient temperature returns to normal, the display quality also returns to normal. This temperature-induced color and brightness drift severely impacts the user's subjective visual experience, especially in professional displays and automotive displays where high display precision is required. Temperature drift has become a key bottleneck restricting the further expansion of OLED applications. Summary of the Invention

[0004] This application addresses the shortcomings of the prior art by proposing a display screen and its image quality correction method, apparatus, device, and medium.

[0005] In a first aspect, embodiments of this application provide a method for image quality correction of a display screen, comprising: obtaining the actual power supply internal resistance change rate at the current temperature of the display screen to be corrected; obtaining an actual screen color deviation quantification index of the display screen to be corrected based on the actual power supply internal resistance change rate and using a preset correlation between the power supply internal resistance change rate and a screen color deviation quantification index; determining an actual screen color deviation range of the display screen to be corrected based on the actual screen color deviation range and the current temperature, using a preset mapping relationship between temperature-power supply voltage-screen color deviation range; and correcting the screen image quality of the display screen to be corrected based on the target power supply voltage.

[0006] Secondly, embodiments of this application provide a display screen image quality correction device, comprising: a first acquisition module, configured to acquire the actual power supply internal resistance change rate at the current temperature of the display screen to be corrected; a second acquisition module, configured to acquire an actual screen color deviation quantification index of the display screen to be corrected based on the actual power supply internal resistance change rate and using a preset correlation between the power supply internal resistance change rate and a screen color deviation quantification index; a determination module, configured to determine the actual screen color deviation range of the display screen to be corrected based on the actual screen color deviation quantification index; a third acquisition module, configured to acquire a target power supply voltage based on the actual screen color deviation range and the current temperature and using a preset mapping relationship between temperature-power supply voltage-screen color deviation range; and a correction module, configured to correct the screen image quality of the display screen to be corrected based on the target power supply voltage.

[0007] Thirdly, embodiments of this application provide a display screen including the image quality correction device described in the second aspect above.

[0008] Fourthly, embodiments of this application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the method described in the first aspect above.

[0009] Fifthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0010] The technical solutions provided in this application embodiment have at least the following technical effects or advantages: This application embodiment obtains the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated, and accurately obtains the actual screen color deviation quantification index by utilizing the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. This determines the actual screen color deviation range, and can dynamically calculate the quantification degree of screen color deviation from the electrical level, thereby accurately locking the actual color deviation range. This effectively avoids the influence of external factors such as ambient light interference and sensor accuracy drift on color acquisition, making the calibration process more stable and reliable. It can improve the brightness uniformity and color gamut consistency of the display screen to a higher level, ensuring that each screen meets a uniform color performance standard at the factory.

[0011] Furthermore, based on this deviation range and the current temperature, the target power supply voltage is quickly obtained through a preset mapping relationship between temperature, power supply voltage, and screen color deviation range. This enables precise correction of the screen image quality. The system can intelligently and quickly match the optimal target power supply voltage and directly apply it to the power supply to complete image quality compensation. The entire correction process does not require repeated manual parameter adjustments, significantly shortening the correction cycle of a single display screen. Compared with traditional point-by-point correction or manual adjustment methods, efficiency is significantly improved. At the same time, it can also significantly reduce manpower input and hardware wear and tear, thereby effectively reducing overall production costs.

[0012] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A flowchart illustrating a display screen image quality correction method provided in an embodiment of this application is shown; Figure 2 A schematic diagram of the structure of a display screen image quality correction device provided in an embodiment of this application is shown; Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown. Detailed Implementation

[0014] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0015] In practical use, changes in ambient temperature significantly affect the light-emitting characteristics of OLEDs, a phenomenon known as "temperature drift." For example, in low-temperature environments, the screen often appears reddish or pinkish; while in high-temperature environments, the image tends to appear bluish or cool. When the ambient temperature returns to normal, the display quality also returns to normal. This temperature-induced color and brightness drift severely impacts the user's subjective visual experience, especially in professional displays and automotive displays where high display precision is required. Temperature drift has become a key bottleneck restricting the further expansion of OLED applications.

[0016] However, in the current traditional OLED mass production process, there is a general lack of effective online monitoring and real-time feedback methods for addressing temperature drift issues. The conventional approach is to place the screen in a specific temperature environment for lighting tests after production, and then confirm and optimize based on the actual image quality. This "produce first, test later, correct later" model has significant drawbacks. First, it cannot capture and correct the differences in temperature drift characteristics caused by material and process fluctuations in real time during production. This results in some screens being passively subjected to a universal, fixed, generic compensation scheme, which cannot accurately adapt to the unique physical characteristics of each screen, making it difficult to achieve the ideal image quality requirement of "zero temperature drift." Second, post-production testing increases the risk of product rework and scrap, reducing yield and production efficiency.

[0017] Based on this, embodiments of this application provide a method for image quality correction of a display screen. The following detailed description of the embodiments of this application is provided in conjunction with the accompanying drawings.

[0018] See Figure 1 The flowchart illustrates a method for image quality correction of a display screen, which specifically includes the following steps: Step 101: Obtain the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated.

[0019] In this embodiment, the rate of change of internal resistance of the power supply refers to the rate of change of resistance between the first actual resistance of the first power supply voltage trace and the second actual resistance of the second power supply voltage trace in the driving circuit of the display screen to be calibrated when the display screen to be calibrated is powered on. The first power supply voltage trace is the positive power supply circuit trace (ELVDD) in the driving circuit of the display screen to be calibrated, and the second power supply voltage trace is the negative power supply circuit trace (ELVSS) in the driving circuit of the display screen to be calibrated.

[0020] In one embodiment, a multimeter, micro-ohmmeter, LCR (Inductance Capacitance Resistance) tester or similar equipment can be used to obtain the first actual resistance of the first power supply voltage trace and the second actual resistance of the second power supply voltage trace of the display screen to be calibrated. Then, based on the first actual resistance and the second actual resistance, the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated can be obtained.

[0021] Furthermore, based on the first and second actual resistances, the actual power supply internal resistance change rate of the display screen to be calibrated can be obtained using the following formula (1):

[0022] in, This represents the rate of change of the actual internal resistance of the power supply. Indicates the first actual resistance. This represents the second actual resistance.

[0023] This application embodiment achieves accurate measurement of the resistance of the first power supply voltage trace and the second power supply voltage trace through a unified resistance acquisition and change rate calculation model. By formulaically calculating the change rate of the power supply internal resistance, a direct mapping relationship is established between electrical parameters and screen color deviation. This solves the pain point of relying on subjective visual judgment or expensive optical equipment in traditional image quality correction. Furthermore, by using the change rate of internal resistance as the core input parameter for image quality compensation, closed-loop control from the electrical underlying layer to the display effect is realized.

[0024] Step 102: Based on the actual power supply internal resistance change rate, use the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index to obtain the actual screen color deviation quantification index of the display screen to be calibrated.

[0025] In this embodiment, screen color deviation refers to the difference between the colors displayed on the screen and standard or ideal colors. This difference causes the human eye to perceive the colors as "inaccurate," for example, a picture that should be pure white may appear bluish or yellowish, which is a typical case of "color cast." The screen color deviation quantification index refers to the numerical value used to measure screen color deviation.

[0026] In one implementation, the correlation between the power supply internal resistance change rate and the screen color deviation quantification index can be obtained by: obtaining multiple test screen color deviation quantification indices and test power supply internal resistance change rates for the target display screen, as well as the screen color deviation range to which each test screen color deviation quantification index and test power supply internal resistance change rate belong; then, based on the test screen color deviation quantification index and test power supply internal resistance change rate corresponding to each screen color deviation range, performing fitting processing to obtain the correlation between the power supply internal resistance change rate and the screen color deviation quantification index.

[0027] By collecting multiple sets of test data from the target display screen, covering different color deviation ranges and corresponding power supply internal resistance change rates, and using a fitting algorithm to construct an accurate mapping relationship between the two, the impact of power supply internal resistance change on color performance can be quantitatively characterized, upgrading color calibration from experience-based judgment to data-driven, and improving the accuracy of color calibration.

[0028] Based on the correlation obtained from the fitting, the system can predict the color deviation trend in real time according to the change rate of the power supply internal resistance and automatically adjust the correction parameters, realizing dynamic adaptive correction, enhancing environmental adaptability, and effectively reducing manpower and time costs.

[0029] Based on the above implementation methods, in some modified implementation methods, obtaining multiple test screen color deviation quantification indicators of the target display screen, and the screen color deviation range to which each test screen color deviation quantification indicator belongs, includes: obtaining the first chromaticity coordinates of the target display screen at a first preset temperature, and the second chromaticity coordinates at different second preset temperatures; obtaining the test screen color deviation quantification indicators corresponding to each second preset temperature based on the first chromaticity coordinates and each second chromaticity coordinate; and determining the screen color deviation range corresponding to each second preset temperature based on the test screen color deviation quantification indicators corresponding to each second preset temperature.

[0030] In this embodiment, the first preset temperature and the second preset temperature are different, and the first preset temperature refers to the temperature at room temperature, that is, the first preset temperature can refer to any temperature in the range of 20℃-30℃. In this embodiment, the first preset temperature can be 25℃.

[0031] Furthermore, the second preset temperature refers to a temperature at a low or high temperature. Specifically, a low temperature refers to a temperature less than or equal to 10°C, and a high temperature refers to a temperature greater than or equal to 35°C.

[0032] Based on the above implementation, in some modified implementations, the color deviation quantification index of the test screen corresponding to each second preset temperature is obtained based on the first chromaticity coordinate and each second chromaticity coordinate, including: obtaining the color deviation quantification index of the test screen corresponding to each second preset temperature based on the first chromaticity coordinate and each second chromaticity coordinate using the following formula (2):

[0033] in, This represents the quantification index of the color deviation of the test screen corresponding to the i-th second preset temperature. This represents the value of the first chromaticity coordinate on the u' axis. This represents the value of the first chromaticity coordinate on the v' axis. This represents the value of the second chromaticity coordinate on the u' axis corresponding to the i-th second preset temperature. This represents the value of the second chromaticity coordinate on the v' axis corresponding to the i-th second preset temperature. This represents a preset constant.

[0034] It should be noted that the preset constant can be a value set in advance by those skilled in the art according to actual needs, or it can be a value obtained by those skilled in the art after adjusting the set value according to actual needs. The embodiments of this application do not make specific limitations. In the embodiments of this application, the preset constant can be 0.004.

[0035] Furthermore, based on the test screen color deviation quantification index corresponding to each second preset temperature, the screen color deviation range corresponding to each second preset temperature is determined: specifically, based on the test screen color deviation quantification index corresponding to each second preset temperature, the screen color deviation range corresponding to each second preset temperature is determined by using the preset mapping relationship between the screen color deviation quantification index and the screen color deviation range.

[0036] It should be noted that the preset mapping relationship between the screen color deviation quantification index and the screen color deviation range can be a mapping relationship obtained by those skilled in the art based on experiments, a mapping relationship preset by those skilled in the art according to actual needs, or a mapping relationship obtained by those skilled in the art after adjusting the preset mapping relationship according to actual needs. This application embodiment does not impose specific limitations. For example, in this application embodiment, the preset mapping relationship between the screen color deviation quantification index and the screen color deviation range can be shown in Table 1 below:

[0037] Table 1 By acquiring the chromaticity coordinates of the target display screen at a first preset temperature and multiple different second preset temperatures, and using this to determine the screen color deviation quantification index and its range, the color drift characteristics of the display screen under different operating ambient temperatures can be accurately characterized. The impact of temperature fluctuations on display performance is fully considered. Through multi-dimensional chromaticity sampling and quantification, the objectivity and data accuracy of color deviation evaluation are significantly improved. This provides fine and reliable benchmark calibration data for establishing the correlation between the power supply internal resistance change rate and color deviation, ensuring that the subsequent image quality correction process can perform accurate power supply cross-voltage matching based on the actual temperature rise law, effectively enhancing the color consistency and image display stability of the display screen in complex operating environments.

[0038] Based on the above implementation, in some modified implementations, the method of obtaining multiple test power supply internal resistance change rates of the target display screen includes: obtaining the first test resistance of the first power supply voltage trace and the second test resistance of the second power supply voltage trace at different second preset temperatures of the target display screen; and obtaining the test power supply internal resistance change rate corresponding to each second preset temperature based on each first test resistance and the second test resistance.

[0039] Further, based on each first test resistor and each second test resistor, the rate of change of the internal resistance of the test power supply corresponding to each second preset temperature is obtained, including: based on each first test resistor and each second test resistor, the rate of change of the internal resistance of the test power supply corresponding to each second preset temperature is obtained by the following formula (3):

[0040] in, This represents the rate of change of the internal resistance of the test power supply corresponding to the i-th second preset temperature. This represents the first test resistor corresponding to the i-th second preset temperature. This represents the second test resistor corresponding to the i-th second preset temperature.

[0041] It should be noted that the target display screen has the same structure as the display screen to be calibrated in the above embodiments, and the first power supply voltage trace and the second power supply voltage trace of the target display screen refer to the same traces as the first power supply voltage trace and the second power supply voltage trace of the display screen to be calibrated. This will not be repeated here.

[0042] Furthermore, the above embodiments obtain the quantitative index of the test screen color deviation corresponding to each second preset temperature and its corresponding screen color deviation range. Therefore, based on the second preset temperature, the screen color deviation range corresponding to the internal resistance change rate of each test power supply can be determined. In this embodiment, the internal resistance change rate of each test power supply corresponding to each screen color deviation range can be shown in Table 2 below:

[0043] Table 2 Based on the quantitative index of test screen color deviation corresponding to each screen color deviation range and the change rate of test power supply internal resistance, a fitting process is performed to obtain the preset correlation between the change rate of power supply internal resistance and the quantitative index of screen color deviation. Specifically, this can be done by taking the quantitative index of test screen color deviation corresponding to each screen color deviation range and the change rate of test power supply internal resistance as a coordinate point, and then performing linear fitting on the curve formed by each coordinate point to obtain a fitting function. This fitting function is the preset correlation between the change rate of power supply internal resistance and the quantitative index of screen color deviation.

[0044] By fitting the quantitative index of color deviation of the test screen within each screen color deviation range with the change rate of internal resistance of the test power supply, a quantitative correlation model between electrical signal characteristics and optical performance characteristics is constructed. This model can transform the screen color drift, which is difficult to monitor directly, into easily obtainable power supply internal resistance change data, thereby achieving predictability of image quality degradation. Moreover, the correlation established by the fitting process can not only eliminate random errors caused by discrete test data and improve the smoothness and universality of the model, but also provide continuous and accurate compensation parameters for displays under different aging levels or different operating conditions. This greatly improves the automation and computational efficiency of image quality correction, ensuring that the display can still maintain high-precision color reproduction capability when the power system impedance fluctuates.

[0045] Based on the above implementation methods, in some modified implementation methods, the actual screen color deviation quantification index of the display screen to be calibrated is obtained based on the actual power supply internal resistance change rate and by using the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. Specifically, the actual power supply internal resistance change rate is input into a fitting function, and the actual screen color deviation quantification index of the display screen to be calibrated is calculated using the fitting function. The fitting function is used to characterize the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index.

[0046] By establishing a fitting function between the power supply internal resistance change rate and the screen color deviation quantitative index, the temperature drift phenomenon, which originally relied on experience-based judgment, is transformed into a quantifiable mathematical model. This model can dynamically calculate the color deviation value based on the actual power supply internal resistance change, providing accurate data support for subsequent calibration and effectively improving the accuracy and pertinence of color calibration.

[0047] Moreover, based on the core parameter of the power supply internal resistance change rate, the embodiments of this application can respond in real time to the changes in power supply characteristics under different operating temperatures and load intensities. Whether it is the increase in internal resistance under high temperature environment or the fluctuation of internal resistance under low temperature scenario, the corresponding color deviation quantification index can be quickly output through the fitting function to achieve dynamic compensation in the entire working range and significantly improve the color stability of the display screen in complex environments.

[0048] Step 103: Based on the actual screen color deviation quantification index, determine the actual screen color deviation range of the display to be calibrated.

[0049] In one implementation, the actual screen color deviation range of the display to be calibrated can be determined based on the actual screen color deviation quantification index and by using a preset mapping relationship between the screen color deviation quantification index and the screen color deviation range.

[0050] In this embodiment, the mapping relationship between the preset screen color deviation quantification index and the screen color deviation range is shown in Table 1 of the above embodiments. Based on the actual screen color deviation quantification index, the actual screen color deviation range of the display screen to be calibrated is determined by using the preset mapping relationship between the screen color deviation quantification index and the screen color deviation range. This is the same as the method used in the above embodiments to determine the screen color deviation range corresponding to each second preset temperature based on the test screen color deviation quantification index corresponding to each second preset temperature, and will not be repeated here.

[0051] Step 104: Based on the actual screen color deviation range and the current temperature, obtain the target power supply voltage using the preset mapping relationship between temperature, power supply voltage, and screen color deviation range.

[0052] In this embodiment, the cross voltage refers to the additional voltage required for the OLED in the display screen to achieve the target brightness. Specifically, it is the difference between the first power supply voltage provided by the first power supply voltage trace and the second power supply voltage provided by the second power supply voltage trace.

[0053] The preset mapping relationship between power supply voltage and screen color deviation range can be shown in Table 3 below:

[0054] Table 3 In one embodiment, based on the actual screen color deviation range and the current temperature, a target power supply voltage is obtained using a preset mapping relationship between temperature, power supply voltage, and screen color deviation range. Specifically, this can be achieved by calculating the difference between the current temperature and the temperature in the preset mapping relationship, obtaining the temperature corresponding to the smallest absolute value of the difference as the target temperature, and obtaining the target temperature and the voltage corresponding to the screen color deviation range as the target power supply voltage. For example, if the current temperature is 15℃ and the actual screen color deviation range is Lv1-Lv1.5, then the differences between the current temperature and the temperature in the preset mapping relationship between power supply voltage and screen color deviation range are 35℃, 25℃, 15℃, 5℃, -30℃, and -50℃, respectively. Therefore, the target temperature is 10℃, and the target power supply voltage corresponding to the actual screen color deviation range Lv1-Lv1.5 is 0.8.

[0055] Step 105: Based on the target power supply voltage, correct the screen quality of the display to be corrected.

[0056] This application embodiment obtains the actual power supply internal resistance change rate of the display screen to be calibrated, and accurately obtains the actual screen color deviation quantification index by utilizing the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. In turn, it determines the actual screen color deviation range, and can dynamically deduce the quantification degree of screen color deviation from the electrical level, thereby accurately locking the actual color deviation range. It effectively avoids the influence of external factors such as ambient light interference and sensor accuracy drift on color acquisition, making the calibration process more stable and reliable. It can improve the brightness uniformity and color gamut consistency of the display screen to a higher level, ensuring that each screen meets a uniform color performance standard when it leaves the factory.

[0057] Furthermore, based on this deviation range, the target power supply voltage can be quickly obtained through the preset mapping relationship between the power supply voltage and the screen color deviation range, thereby achieving accurate correction of the screen image quality. It can intelligently and quickly match the optimal target power supply voltage and directly apply it to the power supply to complete image quality compensation. The entire correction process does not require repeated manual parameter adjustments, which greatly shortens the correction cycle of a single display screen. Compared with the traditional point-by-point correction or manual adjustment method, the efficiency is significantly improved. At the same time, it can also significantly reduce manpower input and hardware wear and tear, thereby effectively reducing the overall production cost.

[0058] See Figure 2 This application also provides a display screen image quality correction device, which is used to perform the display screen image quality correction method described in the above embodiments. The device includes: The first acquisition module 201 is used to acquire the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated. The second acquisition module 202 is used to acquire the actual screen color deviation quantification index of the display screen to be calibrated based on the actual power supply internal resistance change rate and by using the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. The determining module 203 is used to determine the actual screen color deviation range of the display screen to be calibrated based on the actual screen color deviation quantification index. The third acquisition module 204 is used to acquire the target power voltage based on the actual screen color deviation range and the current temperature, using a preset mapping relationship between temperature, power voltage, and screen color deviation range. The calibration module 205 is used to calibrate the screen quality of the display screen to be calibrated based on the target power supply voltage.

[0059] The display screen image quality correction device provided in this application embodiment is based on the same inventive concept as the display screen image quality correction method provided in the above embodiments, and has the same beneficial effects as the methods used, operated or implemented therein.

[0060] This application also provides an electronic device corresponding to the display screen image quality correction method provided in the foregoing embodiments. Please refer to... Figure 3 This illustrates a schematic diagram of an electronic device provided by some embodiments of this application. For example... Figure 3 As shown, the electronic device 30 may include: a processor 300, a memory 301, a bus 302, and a communication interface 303. The processor 300, the communication interface 303, and the memory 301 are connected via the bus 302. The memory 301 stores a computer program that can run on the processor 300. When the processor 300 runs the computer program, it executes the display screen image quality correction method provided in any of the foregoing embodiments of this application.

[0061] The memory 301 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one physical port 303 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network.

[0062] Bus 302 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory 301 is used to store programs. After receiving an execution instruction, the processor 300 executes the program. The display screen image quality correction method disclosed in any of the foregoing embodiments of this application can be applied to the processor 300, or implemented by the processor 300.

[0063] The processor 300 may be an integrated circuit with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 300 or by instructions in software form. The processor 300 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 301. The processor 300 reads the information in memory 301 and, in conjunction with its hardware, completes the steps of the above method.

[0064] The electronic device provided in this application embodiment and the image quality correction method for the display screen provided in this application embodiment are based on the same inventive concept and have the same beneficial effects as the methods they adopt, operate or implement.

[0065] This application also provides a computer-readable storage medium corresponding to the display screen image quality correction method provided in the foregoing embodiments, wherein a computer program (i.e., a program product) is stored thereon, and the computer program, when run by a processor, executes the display screen image quality correction method provided in any of the foregoing embodiments.

[0066] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0067] This application also provides a computer program product corresponding to the display screen image quality correction method provided in the foregoing embodiments, including a computer program that is executed by a processor to implement the display screen image quality correction method provided in the above embodiments.

[0068] The computer-readable storage medium and computer program product provided in the above embodiments of this application are based on the same inventive concept as the display screen image quality correction method provided in the embodiments of this application, and have the same beneficial effects as the methods adopted, run or implemented by the application programs stored therein.

[0069] It should be noted that: The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. Various general-purpose devices can also be used in conjunction with the teachings herein. The required structure for constructing such devices is apparent from the above description. Furthermore, this application is not directed to any particular programming language. It should be understood that the content of this application described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of this application.

[0070] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0071] Similarly, it should be understood that, in order to simplify this application and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of this application, various features of this application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0072] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0073] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0074] The various component embodiments of this application can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the virtual machine creation apparatus according to embodiments of this application. This application can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such an implementation of this application can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0075] It should be noted that the above embodiments are illustrative of this application and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0076] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for image quality correction of a display screen, characterized in that, include: Obtain the actual rate of change of internal resistance of the power supply at the current temperature of the display screen to be calibrated; Based on the actual power supply internal resistance change rate, the actual screen color deviation quantification index of the display screen to be calibrated is obtained by using the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. Based on the actual screen color deviation quantification index, the actual screen color deviation range of the display screen to be calibrated is determined; Based on the actual screen color deviation range and the current temperature, the target power supply voltage is obtained using a preset mapping relationship between temperature, power supply voltage, and screen color deviation range. Based on the target power supply voltage, the screen quality of the display to be calibrated is corrected.

2. The image quality correction method for a display screen according to claim 1, characterized in that, The correlation between the preset power supply internal resistance change rate and the screen color deviation quantification index is obtained through the following methods: Obtain multiple test screen color deviation quantification indicators and test power supply internal resistance change rate of the target display screen, as well as the screen color deviation range to which each of the test screen color deviation quantification indicators and test power supply internal resistance change rate belongs. Based on the quantitative index of the test screen color deviation corresponding to each screen color deviation range and the change rate of the test power supply internal resistance, a fitting process is performed to obtain the correlation between the change rate of the power supply internal resistance and the quantitative index of the screen color deviation.

3. The image quality correction method for a display screen according to claim 2, characterized in that, Obtain multiple quantitative indicators of color deviation for the target display screen, and the screen color deviation range to which each of the quantitative indicators belongs, including: Obtain the first chromaticity coordinates of the target display screen at a first preset temperature, and the second chromaticity coordinates at different second preset temperatures; Based on the first chromaticity coordinates and each of the second chromaticity coordinates, obtain the quantitative index of the test screen color deviation corresponding to each of the second preset temperatures; Based on the quantitative index of screen color deviation corresponding to each of the second preset temperatures, the screen color deviation range corresponding to each of the second preset temperatures is determined.

4. The image quality correction method for a display screen according to claim 3, characterized in that, The step of obtaining the quantitative index of test screen color deviation corresponding to each of the second preset temperatures based on the first chromaticity coordinates and each of the second chromaticity coordinates includes: Based on the first chromaticity coordinates and each of the second chromaticity coordinates, the quantitative index of the test screen color deviation corresponding to each of the second preset temperatures is obtained using the following formula: in, This represents the quantification index of color deviation on the test screen corresponding to the i-th second preset temperature. This represents the value of the first chromaticity coordinate on the u' axis. This represents the value of the first chromaticity coordinate on the v' axis. This represents the value of the second chromaticity coordinate on the u' axis corresponding to the i-th second preset temperature. This represents the value of the second chromaticity coordinate on the v' axis corresponding to the i-th second preset temperature. This represents a preset constant.

5. The image quality correction method for a display screen according to any one of claims 1-4, characterized in that, The process of obtaining the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated includes: Obtain the first actual resistance of the first power supply voltage trace and the second actual resistance of the second power supply voltage trace of the display screen to be calibrated. Based on the first actual resistance and the second actual resistance, the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated is obtained.

6. The image quality correction method for a display screen according to claim 5, characterized in that, The step of obtaining the actual power supply internal resistance change rate of the display screen to be calibrated at its current temperature based on the first actual resistance and the second actual resistance includes: Based on the first actual resistance and the second actual resistance, the actual power supply internal resistance change rate of the display screen to be calibrated at its current temperature is obtained using the following formula. in, This represents the rate of change of the actual power supply's internal resistance. This represents the first actual resistance. This represents the second actual resistance.

7. The image quality correction method for a display screen according to claim 2, characterized in that, The step of obtaining the actual screen color deviation quantification index of the display screen to be calibrated based on the actual power supply internal resistance change rate and utilizing the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index includes: The actual power supply internal resistance change rate is input into the fitting function, and the actual screen color deviation quantification index of the display screen to be calibrated is calculated using the fitting function. The fitting function is used to characterize the correlation between the preset power supply internal resistance change rate and the screen color deviation quantification index.

8. The image quality correction method for a display screen according to claim 1 or 7, characterized in that, The step of determining the actual screen color deviation range of the display screen to be calibrated based on the actual screen color deviation quantification index includes: Based on the actual screen color deviation quantification index, the actual screen color deviation range of the display screen to be calibrated is determined by using the preset mapping relationship between the screen color deviation quantification index and the screen color deviation range.

9. The image quality correction method for a display screen according to any one of claims 1-4, characterized in that, The step of obtaining the target power supply voltage based on the actual screen color deviation range and the current temperature, using a preset mapping relationship between temperature, power supply voltage, and screen color deviation range, includes: Calculate the difference between the current temperature and each temperature in the mapping relationship; The temperature corresponding to the minimum absolute value of the difference is taken as the target temperature. Obtain the voltage across the target temperature and the range of screen color deviation, and use it as the target power supply voltage.

10. A display screen image quality correction device, characterized in that, include: The first acquisition module is used to acquire the actual power supply internal resistance change rate at the current temperature of the display screen to be calibrated. The second acquisition module is used to acquire the actual screen color deviation quantification index of the display screen to be calibrated based on the actual power supply internal resistance change rate and by using the preset correlation between the power supply internal resistance change rate and the screen color deviation quantification index. The determination module is used to determine the actual screen color deviation range of the display screen to be calibrated based on the actual screen color deviation quantification index. The third acquisition module is used to acquire the target power voltage based on the actual screen color deviation range and the current temperature, using a preset mapping relationship between temperature, power voltage, and screen color deviation range. The calibration module is used to calibrate the screen quality of the display screen to be calibrated based on the target power supply voltage.

11. A display screen, characterized in that, Includes the image quality correction device as described in claim 10.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method according to any one of claims 1-9.

13. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method described in any one of claims 1-9.

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