Life aging method for display device and display device

Abstract

The present application discloses a life aging method for a display device and a display device, comprising the following steps: driving each pixel area according to a write voltage to control the current of each pixel area, and obtaining the initial current value and the preset aging current value corresponding to each pixel area; wherein the display area is divided into a plurality of pixel areas; detecting the driving current value corresponding to each pixel area when displaying a preset test screen respectively, and determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value; for a pixel area whose deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel area is equal to the preset aging current value. The current of each pixel area can be accurately controlled to improve the process yield.

Description

Technical Field

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

[0002] In an OLED device, the life of the OLED device is an important indicator for evaluating an OLED device. In the OLED manufacturing process, the OLED device will be subjected to a life aging process after the OLED device is formed. The aging indicators in the life aging process (brightness attenuation, efficiency reduction, and afterimage quality) are positively correlated with the current during the life aging process. The appropriate life aging amount can reduce the brightness attenuation of the OLED material during the use stage and improve the quality of the afterimage.

[0003] In the prior art, when performing life aging, the current of the pixel is usually controlled by giving a fixed voltage, and the current generated in the pixel area is used to age the organic light-emitting diode material. However, the aging method of the prior art cannot achieve fine control. In addition, due to the discreteness of the thin-film transistor characteristics in the driving circuit during the process, the compensation circuit alone cannot guarantee the consistency between the given fixed voltage and the output current, and the driving circuit has poor uniformity. Therefore, the given fixed write voltage will cause a large current deviation of the pixel, which can easily cause damage to the organic pixel material of the organic light-emitting diode device and burns to the power supply line under high current, and low current can easily cause insufficient life aging, making the life aging process ineffective. Summary of the invention

[0004] The embodiments of the present application provide a life aging method for a display device and a display device, which can accurately control the current in each pixel area, improve the stability of the life aging process, and thus improve the process yield.

[0005] On the one hand, an embodiment of the present application provides a life aging method for a display device, characterized in that it includes the following steps: driving each pixel area according to a write voltage to control the current of each pixel area, and obtaining an initial current value and a preset aging current value corresponding to each pixel area; wherein the display area is divided into a plurality of pixel areas; detecting the driving current value corresponding to each pixel area when a preset test screen is displayed respectively, and determining a deviation current value between the driving current value corresponding to each pixel area and the preset aging current value; for a pixel area whose deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel area is equal to the preset aging current value.

[0006] Optionally, in some embodiments of the present application, the step of determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value specifically includes: for a pixel area where the deviation current value is higher than a second preset percentage of the preset aging current value, determining a grayscale correction value of the pixel area based on the initial current value and the driving current value corresponding to the pixel area, and compensating the grayscale value of the pixel area so that the deviation current value of the pixel area is lower than the second preset percentage of the preset aging current value.

[0007] Optionally, in some embodiments of the present application, the specific step of adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel area is equal to the preset aging current value, also includes: determining a control algorithm through the relationship between the write voltage and the pixel area current, and adjusting the write voltage according to the control algorithm and in combination with the difference between the preset aging current value and the driving current value.

[0008] Optionally, in some embodiments of the present application, when the driving current value is greater than the preset aging current value, the write voltage is reduced according to a deviation current value between the preset aging current value and the driving current value;

[0009] When the driving current value is less than the preset aging current value, the writing voltage is increased according to a deviation current value between the preset aging current value and the driving current value.

[0010] Optionally, in some embodiments of the present application, the preset test picture includes a white test picture.

[0011] Optionally, in some embodiments of the present application, the preset test picture further includes at least one of a red test picture, a green test picture, and a blue test picture.

[0012] Optionally, in some embodiments of the present application, for a pixel area where the deviation current value is higher than a second preset percentage of the preset aging current value, a grayscale correction value of the pixel area is determined based on the initial current value and the driving current value corresponding to the pixel area, and the grayscale value of the pixel area is compensated so that the deviation current value is lower than the second preset percentage of the preset aging current value, including at least one of the following steps: according to the grayscale correction value determined for the red test screen corresponding to the pixel area, the grayscale value determined for the white test screen corresponding to the pixel area is compensated; according to the grayscale correction value determined for the green test screen corresponding to the pixel area, the grayscale value determined for the white test screen corresponding to the pixel area is compensated; according to the grayscale correction value determined for the green test screen corresponding to the pixel area, the grayscale value determined for the white test screen corresponding to the pixel area is compensated; according to the grayscale correction value determined for the blue test screen corresponding to the pixel area, the grayscale value determined for the white test screen corresponding to the pixel area is compensated.

[0013] On the other hand, the present application provides a display device, characterized in that it includes: a driving module, used to drive each pixel area according to a write voltage to control the current of each pixel area, wherein the display area is divided into a plurality of pixel areas; a detection module, used to obtain an initial current value corresponding to each pixel area, and used to detect a driving current value corresponding to each pixel area when a preset test screen is displayed respectively; a control module, used to obtain a preset aging current value, and adjust the write voltage of a pixel area whose deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, so that the driving current value corresponding to the pixel area is equal to the preset aging current value.

[0014] Optionally, in some embodiments of the present application, the device also includes a compensation module, which is used to determine the correction parameters of the pixel area for the pixel area where the deviation current value is higher than the second preset percentage of the preset aging current value according to the initial current value corresponding to the pixel area, and compensate the grayscale value of the pixel area so that the deviation current value is lower than the second preset percentage of the preset aging current value.

[0015] Optionally, in some embodiments of the present application, the driving module is connected to a power supply, and a control algorithm is determined by the relationship between the write voltage and the current in the pixel area, wherein the control module is also used to adjust the write voltage according to the control algorithm and in combination with a deviation current value between the preset aging current value and the driving current value.

[0016] Compared with the prior art in which a given fixed write voltage is used to cause a large current deviation of pixels, which affects the process yield, an embodiment of the present application provides a life aging method for a display device and a display device, wherein the life aging method for the display device includes: driving each pixel area according to a write voltage to control the current of each pixel area, wherein the display area is divided into a plurality of pixel areas; obtaining an initial current value corresponding to each pixel area; detecting a driving current value corresponding to each pixel area when a preset test screen is displayed respectively; obtaining a preset aging current value for each pixel area; determining a deviation current value between the driving current value corresponding to each pixel area and the preset aging current value; for a pixel area whose deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel area is equal to the preset aging current value. The present application controls the magnitude of the write voltage through the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value, and then controls the magnitude of the driving current, so that the driving current is subjected to the life aging process with basically no error with the preset aging current value, thereby avoiding insufficient life aging or burn-like defects caused by excessively high or low current during the life aging process, and can accurately control the current of each pixel area, thereby improving the stability of the life aging process, better controlling the current magnitude during the life aging process, and improving the process yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a first flow chart of the life aging method of a display device provided in an embodiment of the present application;

[0019] Figure 2 is a second flow chart of the life aging method of a display device provided in an embodiment of the present application;

[0020] Figure 3 is a third flow chart of the life aging method of a display device provided in an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of a first structure of a display device provided in an embodiment of the present application;

[0022] Figure 5 This is a second structural schematic diagram of the display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0024] The embodiments of the present application provide a method for life aging of a display device and a display device, which can accurately control the current of each pixel area, improve the stability of the life aging process, and thus improve the process yield. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of this application, the term "including" means "including but not limited to". The terms "first", "second", "third", etc. are used only as labels to distinguish different objects, rather than to describe a specific order.

[0025] See also Figure 1 , Figure 1 This is a first flow chart of the life aging method of the display device provided in the embodiment of the present application. Figure 1 As shown, the embodiment of the present application provides a method for aging the life of a display device, comprising the following steps:

[0026] S1: driving each pixel region according to a written voltage to control the current of each pixel region, and obtaining an initial current value and a preset aging current value corresponding to each pixel region, wherein the display region is divided into a plurality of pixel regions.

[0027] In an embodiment of the present application, the display area of ​​the display device can be divided into multiple pixel areas, each pixel area can include multiple pixel units, for example, a 6*6 pixel unit can be divided into one pixel area, so that each pixel area includes multiple sub-pixels.

[0028] In the embodiment of the present application, each sub-pixel can be driven by a corresponding driving module 101, and the driving module 101 includes a pixel driving circuit, wherein the pixel driving circuit can drive the corresponding sub-pixel according to the received write information, and the write information may include a source-to-write signal and a timing signal, and the source-to-write signal may include the aforementioned write voltage and a reference voltage, a reset voltage, a first power supply voltage provided by a first power supply, and a second power supply voltage provided by a second power supply. Among them, the reference voltage and the reset voltage are fixed values; the first power supply voltage and the second power supply voltage are used to provide voltage to the light-emitting circuit of the sub-pixel; the deviation current value between the write voltage and the reference voltage is used to control the magnitude of the current in the light-emitting circuit of the sub-pixel; the timing signal is used to control the opening and closing timing of the thin film transistor in the pixel driving circuit. In other words, the switch transistor in the pixel driving circuit can be turned on or off according to the received timing signal, and then the write voltage, etc., can be read through the switch control of the switch transistor, and the current in the light-emitting circuit of the sub-pixel can be controlled according to the write voltage, etc.

[0029] It should be understood that the structure and working principle of the pixel driving circuit of the sub-pixel are already existing technologies and are well known to ordinary technicians in the field, and this application will not go into details again.

[0030] In the embodiment of the present application, the initial current value corresponding to each pixel area can be obtained through the detection module.

[0031] In an embodiment of the present application, the preset aging current value can be preset in advance, and the preset aging current value can be set according to the characteristics of the display device to ensure that an appropriate amount of life aging is achieved in the life aging process, so that the display device has a lower brightness attenuation and better afterimage quality during the use stage.

[0032] S2: Detecting the driving current value corresponding to each pixel area when the preset test screen is displayed, and determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value.

[0033] In an embodiment of the present application, the driving current of the pixel area during the life aging process is provided by the power supply in the driving module and is recorded in real time by the detection module. The control module provides the gate voltage of the driving transistor in the pixel driving circuit to adjust the driving current of the driving transistor. The compensation module is used to detect the electrical changes of the thin film transistor in the plane during the life aging process.

[0034] In the embodiment of the present application, the preset test picture includes a white test picture, such as a white picture with a grayscale value of 255.

[0035] In the embodiment of the present application, considering the case where color deviation is corrected during life aging, the preset test screen may further include at least one of a red test screen, a green test screen, and a blue test screen, that is, a red screen with a grayscale value of 255, a green screen with a grayscale value of 255, and a blue screen with a grayscale value of 255. Among them, the pixel area displays the red test screen, that is, the red sub-pixel in the pixel area is lit, and the sub-pixels of other colors are not lit, the pixel area displays the green test screen, that is, the green sub-pixel in the pixel area is lit, and the sub-pixels of other colors are not lit, and the pixel area displays the blue test screen, that is, the blue sub-pixel in the pixel area is lit, and the sub-pixels of other colors are not lit. Therefore, through the red test screen, the green test screen, and the blue test screen, the color deviation of the display device can be corrected while the display device is life aged, so as to avoid the color deviation problem of the display device after life aging.

[0036] When the preset test picture includes a white test picture, a red test picture, a green test picture and a blue test picture, the driving current values ​​corresponding to the white test picture, the red test picture, the green test picture and the blue test picture displayed in each pixel area can be recorded respectively.

[0037] In the embodiment of the present application, upon receiving the grayscale correction instruction, the control module sequentially controls each pixel region to display a preset test screen; when the pixel region displays the preset test screen, the driving current value of the pixel region is detected by the detection module 102. For the pixel region whose deviation current value is higher than the second preset percentage of the preset aging current value, the grayscale correction value of the pixel region is determined according to the initial current value and the driving current value corresponding to the pixel region, and the grayscale value of the pixel region is compensated so that the deviation current value is lower than the second preset percentage of the preset aging current value, including at least one of the following steps: according to the grayscale correction value determined by the pixel region corresponding to the red test screen, the grayscale value determined by the pixel region corresponding to the white test screen is compensated; according to the grayscale correction value determined by the pixel region corresponding to the green test screen, the grayscale value determined by the pixel region corresponding to the white test screen is compensated; according to the grayscale correction value determined by the pixel region corresponding to the blue test screen, the grayscale value determined by the pixel region corresponding to the white test screen is compensated.

[0038] In the embodiment of the present application, if lifetime compensation is performed directly according to the grayscale value determined by the white test screen, the display device may have a certain degree of color deviation after compensation. Since the white screen is formed by red sub-pixels, green sub-pixels and blue sub-pixels, the display device can be adjusted based on the grayscale value determined by the white test screen to obtain the adjusted grayscale values ​​of the corresponding red sub-pixels, green sub-pixels and blue sub-pixels, respectively, and compensate the brightness of the red sub-pixels, green sub-pixels and blue sub-pixels in the pixel area according to the adjusted grayscale values ​​of the red sub-pixels, green sub-pixels and blue sub-pixels. In this way, the color deviation of the display device can be corrected while the lifetime compensation is performed, so as to avoid the color deviation problem of the display device after the lifetime compensation.

[0039] In an embodiment of the present application, the control module can calculate the deviation current value between the preset aging current value and the current detection value, and then the control module can adjust the write voltage according to the deviation current value between the preset aging current value and the current detection value, and drive the sub-pixels in the pixel area according to the adjusted write voltage.

[0040] Specifically, during the life aging process, the current in the pixel area can be detected in real time to generate a driving current value, and then the driving current value is compared with the preset aging current value. If the current detection value is basically consistent with the preset aging current value, the write voltage is kept unchanged, and the sub-pixels in the pixel area continue to be driven according to the write voltage; if the driving current value is inconsistent with the preset aging current value, the write voltage is adjusted according to the deviation current value between the preset aging current value and the driving current value to obtain an adjusted write voltage, and the sub-pixels in the pixel area are driven according to the adjusted write voltage, thereby ensuring that the current in the pixel area is maintained at the preset aging current value.

[0041] S3: For a pixel region where the deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, the write voltage is adjusted according to the deviation current value so that the driving current value corresponding to the pixel region is equal to the preset aging current value.

[0042] In the embodiment of the present application, the first preset percentage of the preset aging current value is 0.1%-9.9% of the preset aging current value, preferably, 5% of the preset aging current value; the second preset percentage of the preset aging current value is 10% of the preset aging current value.

[0043] In the embodiment of the present application, the control algorithm is determined by the relationship between the write voltage and the pixel area current, and the write voltage is adjusted according to the control algorithm and in combination with the deviation current value between the preset aging current value and the driving current value.

[0044] In an embodiment of the present application, when the driving current value is greater than the preset aging current value, the write voltage is reduced according to the deviation current value between the preset aging current value and the driving current value; when the driving current value is less than the preset aging current value, the write voltage is increased according to the deviation current value between the preset aging current value and the driving current value.

[0045] In an embodiment of the present application, detecting the driving current through a sampling resistor specifically includes: detecting the voltage of the sampling resistor to generate a sampling voltage value; converting according to a preset aging current value and the resistance value of the sampling resistor to obtain a preset voltage value; and adjusting the write voltage according to the difference between the preset voltage value and the sampling voltage value.

[0046] The display device life aging method provided in the present application controls the magnitude of the write voltage through the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value, and then controls the magnitude of the driving current, so that the driving current is subjected to the life aging process with basically no error with the preset aging current value, thereby avoiding insufficient life aging or burn-like defects caused by excessively high or low current during the life aging process, and can accurately control the current of each pixel area, thereby improving the stability of the life aging process, better controlling the current magnitude during the life aging process, and improving the process yield.

[0047] As a specific implementation of this application, please refer to Figure 2 and Figure 3 , Figure 2 is a second flow chart of the life aging method of a display device provided in an embodiment of the present application; Figure 3 FIG. 1 is a third flow chart of the life aging method of a display device provided in an embodiment of the present application. Figure 2 and Figure 3 As shown, an embodiment of the present application provides another life aging method for a display device, which differs from the above-mentioned life aging method in that the step of determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value specifically also includes: for a pixel area whose deviation current value is higher than a second preset percentage of the preset aging current value, first determine the grayscale correction value of the pixel area based on the initial current value and the driving current value corresponding to the pixel area, and compensate the grayscale value of the pixel area so that the deviation current value of the pixel area is lower than the second preset percentage of the preset aging current value.

[0048] Specifically, the following steps are included:

[0049] S10: driving each pixel region according to the written voltage to control the current of each pixel region, and obtaining an initial current value and a preset aging current value corresponding to each pixel region; wherein the display region is divided into a plurality of pixel regions.

[0050] S20: Detecting a driving current value corresponding to each pixel region when the preset test image is displayed, and determining a deviation current value between the driving current value corresponding to each pixel region and a preset aging current value.

[0051] S30: For a pixel region whose deviation current value is higher than a second preset percentage of a preset aging current value, first determine a grayscale correction value of the pixel region according to an initial current value and a driving current value corresponding to the pixel region, and compensate the grayscale value of the pixel region so that the deviation current value of the pixel region is lower than a second preset percentage of the preset aging current value.

[0052] S40: For a pixel region where the deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel region is equal to the preset aging current value.

[0053] The display device life aging method provided in the present application controls the magnitude of the write voltage through the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value, and then controls the magnitude of the driving current, so that the driving current is subjected to the life aging process with basically no error with the preset aging current value, thereby avoiding insufficient life aging or burn-like defects caused by excessively high or low current during the life aging process, and can accurately control the current of each pixel area, thereby improving the stability of the life aging process, better controlling the current magnitude during the life aging process, and improving the process yield.

[0054] On the other hand, see Figure 4 and Figure 5 , Figure 4 is a schematic diagram of a first structure of a display device provided in an embodiment of the present application; Figure 5 is a schematic diagram of a second structure of a display device provided in an embodiment of the present application. Figure 4 As shown, the present application provides a display device 100, including: a driving module 101, used to drive each pixel area according to a write voltage to control the current of each pixel area, wherein the display area is divided into a plurality of pixel areas; a detection module 102, used to obtain an initial current value corresponding to each pixel area, and used to detect a driving current value corresponding to each pixel area when a preset test screen is displayed respectively; a control module 103, used to obtain a preset aging current value, and adjust the write voltage of a pixel area whose deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, so that the driving current value corresponding to the pixel area is equal to the preset aging current value.

[0055] In the embodiments of the present application, Figure 5The display device 200 shown also includes a compensation module 104, which is used to determine the correction parameters of the pixel area for the pixel area where the deviation current value is higher than the second preset percentage of the preset aging current value according to the initial current value corresponding to the pixel area, and compensate the grayscale value of the pixel area so that the deviation current value is lower than the second preset percentage of the preset aging current value.

[0056] In an embodiment of the present application, the driving module 101 is connected to a power supply, and a control algorithm is determined by the relationship between the write voltage and the pixel area current, wherein the control module 103 is also used to adjust the write voltage according to the control algorithm and in combination with a deviation current value between a preset aging current value and a driving current value.

[0057] In an embodiment of the present invention, first, each pixel area can be driven by the driving module 101 according to the write voltage to control the current of each pixel area, wherein the display area is divided into a plurality of pixel areas; then, the initial current value corresponding to each pixel area and the driving current value corresponding to each pixel area when the preset test screen is displayed can be obtained by the detection module 102; the preset aging current value can be obtained by the control module 103, and the correction parameter of the pixel area can be determined by the compensation module 104 for the pixel area whose deviation current value is higher than the second preset percentage of the preset aging current value according to the initial current value corresponding to the pixel area, and the grayscale value of the pixel area can be compensated so that the deviation current value is lower than the second preset percentage of the preset aging current value; finally, the write voltage of the pixel area whose deviation current value is higher than the first preset percentage of the preset aging current value and lower than the second preset percentage of the preset aging current value can be adjusted by the control module 103 so that the driving current value corresponding to the pixel area is equal to the preset aging current value.

[0058] The display device life aging method and display device provided in the present application control the magnitude of the write voltage through the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value, thereby controlling the magnitude of the driving current, so that the driving current is subjected to the life aging process with basically no error with the preset aging current value, thereby avoiding insufficient life aging or burn-like defects caused by excessively high or low current during the life aging process, and being able to accurately control the current of each pixel area, thereby improving the stability of the life aging process, better controlling the current magnitude during the life aging process, and improving the process yield.

[0059] The above is a detailed introduction to a display device life aging method and a display device provided in an embodiment 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 method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for aging the life of a display device, characterized in that: The following steps are involved: Driving each pixel region according to the written voltage to control the current of each pixel region, and obtaining an initial current value and a preset aging current value corresponding to each pixel region; wherein the display region is divided into a plurality of pixel regions; Detecting the driving current value corresponding to each pixel area when the preset test screen is displayed, and determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value; For a pixel region where the deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, adjusting the write voltage according to the deviation current value so that the drive current value corresponding to the pixel region is equal to the preset aging current value; The step of determining the deviation current value between the driving current value corresponding to each pixel area and the preset aging current value specifically includes: For a pixel area where the deviation current value is higher than a second preset percentage of the preset aging current value, a grayscale correction value of the pixel area is determined based on the initial current value and the driving current value corresponding to the pixel area, and the grayscale value of the pixel area is compensated so that the deviation current value of the pixel area is lower than the second preset percentage of the preset aging current value.

2. The method for aging the life of a display device according to claim 1, characterized in that: The specific step of adjusting the write voltage according to the deviation current value so that the driving current value corresponding to the pixel area is equal to the preset aging current value also includes: A control algorithm is determined by the relationship between the write voltage and the current in the pixel area, and the write voltage is adjusted according to the control algorithm and in combination with the difference between the preset aging current value and the driving current value.

3. The method for aging the life of a display device according to claim 2, characterized in that: When the driving current value is greater than the preset aging current value, reducing the write voltage according to a deviation current value between the preset aging current value and the driving current value; When the driving current value is less than the preset aging current value, the writing voltage is increased according to a deviation current value between the preset aging current value and the driving current value.

4. The method for aging the life of a display device according to claim 1, characterized in that: The preset test picture includes a white test picture.

5. The method for aging the life of a display device according to claim 4, characterized in that: The preset test picture also includes at least one of a red test picture, a green test picture, and a blue test picture.

6. The method for aging the life of a display device according to claim 5, characterized in that: For a pixel area where the deviation current value is higher than a second preset percentage of the preset aging current value, determining a grayscale correction value of the pixel area according to the initial current value and the driving current value corresponding to the pixel area, and compensating the grayscale value of the pixel area so that the deviation current value is lower than the second preset percentage of the preset aging current value, comprises at least one of the following steps: Compensating the grayscale value determined by the pixel area corresponding to the white test picture according to the grayscale correction value determined by the pixel area corresponding to the red test picture; Compensating the grayscale value determined by the pixel area corresponding to the white test picture according to the grayscale correction value determined by the pixel area corresponding to the green test picture; According to the grayscale correction value determined by the pixel area corresponding to the blue test picture, the grayscale value determined by the pixel area corresponding to the white test picture is compensated.

7. A display device, characterized in that: include: A driving module, used for driving each pixel region according to a written voltage to control the current of each pixel region, wherein the display area is divided into a plurality of pixel regions; A detection module, used to obtain an initial current value corresponding to each pixel area, and to detect a driving current value corresponding to each pixel area when the preset test screen is displayed, and to determine a deviation current value between the driving current value corresponding to each pixel area and a preset aging current value; A control module, configured to obtain a preset aging current value, and adjust the write voltage of a pixel region where the deviation current value is higher than a first preset percentage of the preset aging current value and lower than a second preset percentage of the preset aging current value, so that the drive current value corresponding to the pixel region is equal to the preset aging current value; The device also includes a compensation module, which is used to determine the correction parameters of the pixel area for the pixel area where the deviation current value is higher than the second preset percentage of the preset aging current value according to the initial current value corresponding to the pixel area, and compensate the grayscale value of the pixel area so that the deviation current value is lower than the second preset percentage of the preset aging current value.

8. The display device according to claim 7, characterized in that: The driving module is connected to a power source, and a control algorithm is determined by the relationship between the write voltage and the current in the pixel area, wherein: The control module is further configured to adjust the write voltage according to the control algorithm and in combination with a deviation current value between the preset aging current value and the driving current value.

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