Driving method of display panel and display device

Abstract

The embodiment of the invention discloses a driving method of a display panel and a display device. The method comprises the steps that the driving chip obtains the current working temperature of the display device; the driving chip searches a pre-stored corresponding relation table of temperature intervals and compensation values according to the current working temperature to obtain the compensation value corresponding to the temperature interval where the current working temperature is located, the corresponding relation table of the temperature intervals and the compensation values is determined by performing eye pattern testing on display signals corresponding to the driving chip in a plurality of set working temperature intervals; and the driving chip compensates the received display signal from the time schedule controller according to the compensation value corresponding to the temperature interval where the current working temperature is located, and outputs a data voltage according to the compensated display signal. According to the embodiment, the signal quality in the high-temperature environment and the low-temperature environment is ensured, the eye pattern quality is improved, the drawing difference risk is reduced, and the eye pattern quality is optimal at different temperatures.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and more specifically, to a display panel driving method and a display device. Background Art

[0002] In the related art, for display devices with ultra-large size, high refresh rate and high resolution, there is a problem of display abnormality caused by deterioration of eye diagram quality in high temperature environment and low temperature environment. Summary of the invention

[0003] The purpose of the present disclosure is to provide a display panel driving method and a display device to solve at least one of the problems existing in the prior art.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A first aspect of the present disclosure provides a method for driving a display panel, wherein a display device includes a timing controller, a plurality of driving chips and the display panel, and the driving method includes:

[0006] The driving chip acquires the current operating temperature of the display device;

[0007] The driver chip searches a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature to obtain a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on a display signal corresponding to the driver chip under a plurality of set operating temperature intervals;

[0008] The driving chip compensates the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and outputs a data voltage according to the compensated display signal.

[0009] Optionally, the display device includes N driving chips, the set operating temperature intervals are M, N and M are integers greater than 1, and the driving method further includes:

[0010] For each driver chip, an eye diagram test is performed on the display signal from the timing controller received by the driver chip in the 1st to the Mth set operating temperature ranges after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature range is used as the compensation value corresponding to the mth set operating temperature range of the driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature ranges of the driver chip and the compensation values.

[0011] Optionally, the display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared to the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes:

[0012] For each driver chip in the first group of driver chips, an eye diagram test is performed on the display signal received by the driver chip from the timing controller in the first to Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals of the driver chip and the compensation values;

[0013] The correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

[0014] Optionally, the performing an eye diagram test on the display signal received by the driver chip from the timing controller after compensating the display signal with different compensation values ​​comprises:

[0015] The display signal received by the driving chip from the timing controller is subjected to an eye diagram test after being compensated by using a plurality of set compensation values.

[0016] Optionally, the display device includes N driving chips, the set operating temperature intervals are M, N and M are integers greater than 1, and the driving method further includes:

[0017] A test display device is provided, wherein the test display device comprises a test timing controller and N test driving chips;

[0018] For each test driver chip, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip;

[0019] The correspondence table between the temperature range and the compensation value of the n-th test driving chip is used as the correspondence table between the temperature range and the compensation value of the n-th driving chip.

[0020] Optionally, the display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared to the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes:

[0021] A test display device is provided, the test display device comprising a test timing controller, a first group of test driver chips and a second group of test driver chips, the first group of test driver chips and the second group of test driver chips respectively comprising K test driver chips, the kth test driver chip in the first group of test driver chips and the kth test driver chip in the second group of test driver chips being symmetrically arranged relative to the test timing controller;

[0022] For each test driver chip in the first group of test driver chips, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip;

[0023] The correspondence table between the temperature range and the compensation value of the kth test driver chip in the first group of test driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips and the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

[0024] Optionally, the performing an eye diagram test on the display signal received by the test driving chip from the test timing controller after compensating the display signal using different compensation values ​​comprises:

[0025] The display signal received by the test driving chip from the test timing controller is subjected to an eye diagram test after being compensated by using a plurality of set compensation values.

[0026] Optionally, the multiple set working temperature intervals have different interval lengths.

[0027] A second aspect of the present disclosure provides a display device, including a timing controller, a plurality of driving chips and a display panel;

[0028] The driving chip is used to obtain the current operating temperature of the display device;

[0029] The driver chip is further used to search a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature to obtain a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on a display signal corresponding to the driver chip under a plurality of set operating temperature intervals;

[0030] The driving chip is further used to compensate the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and output a data voltage according to the compensated display signal.

[0031] Optionally, the driver chip acquiring the current operating temperature of the display device includes: the driver chip determining the current operating temperature of the display device according to a sensing signal from a temperature sensor.

[0032] Optionally, the temperature sensor is a temperature sensing circuit, which is used to sense the current operating temperature of a control board or a printed circuit board in the display device.

[0033] The beneficial effects of the present disclosure are as follows:

[0034] The technical solution disclosed in the present invention determines a correspondence table between the temperature intervals and the compensation values ​​by performing an eye diagram test on the display signals corresponding to the driver chip in multiple set operating temperature intervals, and uses the driver chip to compensate the display signals received from the timing controller according to the compensation values ​​corresponding to the temperature interval where the current operating temperature is located, thereby ensuring the signal quality in high and low temperature environments, improving the eye diagram quality, reducing the risk of image abnormality, and achieving optimal eye diagram quality at different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The specific implementation methods of the present disclosure are further described in detail below with reference to the accompanying drawings.

[0036] Figure 1 A flow chart of a method for driving a display panel provided by an embodiment of the present disclosure is shown.

[0037] Figure 2 A schematic structural diagram of a display device provided by an embodiment of the present disclosure is shown.

[0038] Figure 3 A structural schematic diagram of an eye diagram test in a display panel driving method provided by an embodiment of the present disclosure is shown.

[0039] Figure 4 A structural schematic diagram of an eye diagram test in a display panel driving method provided in another embodiment of the present disclosure is shown.

[0040] Figure 5 A schematic structural diagram of a display device provided in another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0041] The terms “on”, “formed on” and “disposed on” in the present disclosure may mean that one layer is directly formed or disposed on another layer, or may mean that one layer is indirectly formed or disposed on another layer, i.e., there are other layers between the two layers.

[0042] It should be noted that, although the terms "first", "second", etc. may be used herein to describe various parts, components, elements, regions, layers and / or parts, these parts, components, elements, regions, layers and / or parts should not be limited by these terms. Instead, these terms are used to distinguish one part, component, element, region, layer and / or part from another. Thus, for example, the first part, first member, first element, first region, first layer and / or first part discussed below may be referred to as the second part, second member, second element, second region, second layer and / or second part without departing from the teachings of the present disclosure.

[0043] In the present disclosure, unless otherwise specified, the term "same-layer arrangement" used refers to two layers, parts, components, elements or parts that can be formed by the same preparation process (such as a patterning process, etc.), and the two layers, parts, components, elements or parts are generally formed of the same material. For example, two or more functional layers are arranged in the same layer, which means that these functional layers arranged in the same layer can be formed using the same material layer and the same preparation process, thereby simplifying the preparation process of the display substrate.

[0044] In the present disclosure, unless otherwise specified, the expression "patterning process" generally includes steps such as photoresist coating, exposure, development, etching, photoresist stripping, etc. The expression "one-time patterning process" means a process of forming patterned layers, components, members, etc. using one mask.

[0045] For ultra-large-size, high-refresh-rate and high-resolution display products, the requirements for eye diagrams are getting higher and higher due to the continuous increase in driver speed and the increase in the distance of the remote chip on film (COF) signal routing. At present, for the above display products, the display image is normal at room temperature, but in low-temperature and high-temperature environments, as the signal attenuates, the corresponding area of ​​the remote COF is prone to image deviation.

[0046] In the related art, the above-mentioned display product has only one compensation value chart (EQ Profile), which is debugged at room temperature. For example, there are a total of 8 compensation values ​​available for selection in the current compensation value chart of the driver, and the optimal setting is found through testing under room temperature.

[0047] In this version, the eye diagram quality is tested by simulating high temperature environment and low temperature environment respectively with a hot air gun and a condensing agent. As long as it does not fail, it is considered normal. However, the compensation value chart at room temperature is often not the optimal solution in high temperature environment and low temperature environment, and the problems reported in the market are often display abnormalities that occur in high temperature environment and low temperature environment.

[0048] In summary, in the related art, for display devices with ultra-large size, high refresh rate and high resolution, there is a problem of display abnormality caused by deterioration of eye diagram quality in high temperature environment and low temperature environment.

[0049] In view of this, if Figure 1 As shown, an embodiment of the present invention provides a driving method for a display panel, the display device includes a timing controller, a plurality of driving chips and the display panel, the driving method includes: step S10: the driving chip obtains the current operating temperature of the display device; step S20: the driving chip searches a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature, and obtains a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on the display signal corresponding to the driving chip under a plurality of set operating temperature intervals; step S30: the driving chip compensates the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and outputs a data voltage according to the compensated display signal.

[0050] In a specific example, Figure 2As shown, the display device includes a timing circuit board 10, a timing controller (TCON) 20, a cover chip 90, a driver chip 30, a display panel 40, a printed circuit board (PCB) 50 and a temperature collector 60. Further, the display panel 400 includes a display area 401 and a non-display area 402, and the temperature collector 60 is arranged in the non-display area 402. The temperature collector 60 is used to collect the current working temperature of the display panel 40; further, the temperature signal collected by the temperature collector 60 is sent to the timing controller; further, the printed circuit board can be an XPCB. Further, the timing circuit board 10 also includes a memory 70, and the memory 70 stores a corresponding relationship table between temperature intervals and compensation values; further, the display device also includes a flexible flat cable (FFC) 80.

[0051] In another specific example, the temperature collector may also collect the current operating temperature of the timing controller or the printed circuit board.

[0052] In another specific example, the temperature collector sends the collected temperature signal to the driving chip.

[0053] In another specific example, the memory may also be disposed in the driver chip.

[0054] In a specific example, Figure 2 As shown, the display device also includes a system controller (not shown in Figure 2 As shown in FIG. 1 , the system controller may receive a display signal of an image to be displayed in a display frame, and then send the display signal to the timing controller. The timing controller may input a clock control signal to the gate drive circuit through a level shift circuit, so that the gate drive circuit outputs a gate scan signal to the gate line, thereby driving the gate line. Furthermore, the timing controller may also process the received display signal accordingly, and send the received display signal to the source drive circuit after the corresponding processing. The source drive circuit includes, for example, Figure 2 The driver chip 30 in the display panel 40 receives the current operating temperature of the display panel 40 collected by the temperature collector 60. The driver chip 30 searches the corresponding relationship table between the temperature range and the compensation value pre-stored in the memory 70 according to the current operating temperature collected by the temperature collector 60, and obtains the compensation value corresponding to the temperature range where the current operating temperature is located. The driver chip 30 compensates the display signal according to the compensation value, and inputs the compensated display signal into the data line in the display panel 40. The data voltage is input to charge the sub-pixel, so that the sub-pixel inputs the corresponding data voltage, and the picture display function of the display frame is realized.

[0055] In a specific example, Figure 2 As shown, the driver chip 30 compensates the intensity of the display signal output from the timing controller 20 to the driver chip 30 according to the corresponding relationship table between the temperature range and the compensation value. Further, the display signal is, for example, a voltage signal.

[0056] In a specific example, the correspondence table between the temperature interval and the compensation value is determined by performing an eye diagram test on the display signal corresponding to the driver chip under multiple set operating temperature intervals. Further, the operating temperature range is -20°C to 60°C. Further, the multiple set operating temperature intervals include at least the first to fifth set operating temperature intervals.

[0057] In a specific example, the correspondence table between temperature intervals and compensation values ​​is determined by performing an eye diagram test on the display signals corresponding to the driver chip in multiple set operating temperature intervals, wherein the corresponding display signal may be an eye diagram test performed in advance on the display signal received by the driver chip in the first set operating temperature interval to the fifth set operating temperature interval of the display device product of the present disclosure, and the pre-performed eye diagram test result is stored in the corresponding driver chip; or it may be an eye diagram test performed on the display signal received by the driver chip in the first set operating temperature interval to the fifth set operating temperature interval of the test display device, and the test result is stored in the corresponding driver chip, wherein the test display device has the same specifications and model as the display device product of the present disclosure.

[0058] This embodiment determines a correspondence table between the temperature intervals and the compensation values ​​by performing an eye diagram test on the display signals corresponding to the driver chip in multiple set operating temperature intervals, and uses the driver chip to compensate the display signals received from the timing controller according to the compensation values ​​corresponding to the temperature interval where the current operating temperature is located, thereby ensuring the signal quality in high temperature and low temperature environments, improving the eye diagram quality, reducing the risk of image abnormality, and achieving optimal eye diagram quality at different temperatures.

[0059] In a possible implementation, the display device includes N driver chips, the set operating temperature intervals are M, N and M are respectively integers greater than 1, and the driving method also includes: for each driver chip, an eye diagram test is performed on the display signal received by the driver chip from the timing controller in the 1st to the Mth set operating temperature intervals after being compensated using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the driver chip, m∈[1,M], to obtain a correspondence table between the temperature intervals and compensation values ​​of the driver chip.

[0060] In a specific example, Figure 3As shown, the display device includes 12 driver chips, that is, N = 12. Further, the display device includes a first driver chip 301, a second driver chip 302, a third driver chip 303, a fourth driver chip 304, a fifth driver chip 305, a sixth driver chip 306, a seventh driver chip 307, an eighth driver chip 308, a ninth driver chip 309, a tenth driver chip 3010, an eleventh driver chip 3011 and a twelfth driver chip 3012.

[0061] In a specific example, the number of working temperature intervals is set to 5, that is, M=5. Further, the total range of the working temperature is -20°C to 60°C. Further, the first setting working temperature interval is greater than or equal to -20°C and less than -10°C, the second setting working temperature interval is greater than or equal to -10°C and less than 0°C, the third setting working temperature interval is greater than or equal to 0°C and less than 25°C, the fourth setting working temperature interval is greater than or equal to 25°C and less than 40°C, and the fifth setting working temperature interval is greater than or equal to 40°C and less than 60°C.

[0062] This embodiment sets the operating temperature to multiple operating temperature ranges based on the performance of the driver chip. Compared with using the compensation value corresponding to the optimal eye diagram data of the eye diagram test of the driver chip at each temperature as the compensation value corresponding to the driver chip at each temperature, it can simplify the test process, improve the test efficiency, and the test method is simple and easy to implement.

[0063] In a specific example, there are 8 compensation values ​​available for selection in the compensation value chart, namely, the first compensation value is 00dB, the second compensation value is 3.0dB, the third compensation value is 4.5dB, the fourth compensation value is 6.0dB, the fifth compensation value is 7.5dB, the sixth compensation value is 9.0dB, the seventh compensation value is 10.5dB and the eighth compensation value is 12.0dB.

[0064] In a specific example, Figure 3As shown, taking the first driver chip 301 as an example, in the first set working temperature range (for example, the temperature is greater than or equal to -20°C and less than -10°C), the display signal from the timing controller 20 received by the first driver chip 301 is compensated by the first compensation value of 0.0dB, and then an eye diagram test is performed using an oscilloscope to obtain the first eye diagram data; the display signal from the timing controller 20 received by the first driver chip 301 is compensated by the second compensation value of 3.0dB, and then an eye diagram test is performed using an oscilloscope to obtain the second eye diagram data; the display signal from the timing controller 20 received by the first driver chip 301 is compensated by the third compensation value of 4.5dB, and then an eye diagram test is performed using an oscilloscope to obtain the third eye diagram data; the display signal from the timing controller 20 received by the first driver chip 301 is compensated by the fourth compensation value of 6.0dB, and then an eye diagram test is performed using an oscilloscope to obtain the fourth eye diagram data; The display signals from the timing controller 20 received by the driving chip 301 are compensated by the fifth compensation value of 7.5dB, and then an eye diagram test is performed using an oscilloscope to obtain fifth eye diagram data; the display signals from the timing controller 20 received by the first driving chip 301 are compensated by the sixth compensation value of 9.0dB, and then an eye diagram test is performed using an oscilloscope to obtain sixth eye diagram data; the display signals from the timing controller 20 received by the first driving chip 301 are compensated by the seventh compensation value of 10.5dB, and then an eye diagram test is performed using an oscilloscope to obtain seventh eye diagram data; the display signals from the timing controller 20 received by the first driving chip 301 are compensated by the eighth compensation value of 12.0dB, and then an eye diagram test is performed using an oscilloscope to obtain eighth eye diagram data; the compensation value corresponding to the optimal eye diagram data from the first eye diagram data to the eighth eye diagram data is used as the compensation value corresponding to the first set operating temperature range of the first driving chip 301.

[0065] Furthermore, taking the first driver chip 301 as an example, the above operations are performed in the second set working temperature range (for example, the temperature is greater than or equal to -10°C and less than 0°C), the third set working temperature range (for example, the temperature is greater than or equal to 0°C and less than 25°C), the fourth set working temperature range (for example, the temperature is greater than or equal to 25°C and less than 40°C) and the fifth set working temperature range (for example, the temperature is greater than or equal to 40°C and less than 60°C), respectively, to obtain the compensation values ​​corresponding to the second set working temperature range, the third set working temperature range, the fourth set working temperature range and the fifth set working temperature range of the first driver chip 301, respectively, and then obtain the correspondence table between the temperature ranges and the compensation values ​​of the first driver chip 301.

[0066] It should be noted that the method for determining the corresponding relationship table between the temperature ranges of the second driver chip 302 to the twelfth driver chip 3012 and the compensation value is the same as the method for determining the corresponding relationship table between the temperature ranges of the first driver chip and the compensation value. Thus, the corresponding relationship table between the temperature ranges of the first driver chip 301 to the twelfth driver chip 3012 and the compensation value can be obtained.

[0067] This embodiment can accurately obtain a corresponding relationship table between the driver chip in multiple temperature ranges and the compensation value by performing factory testing on each display device product, thereby improving the compensation effect of the driver chip and reducing the defective rate of the display device product.

[0068] In a possible implementation, the display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared to the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes:

[0069] For each driver chip in the first group of driver chips, an eye diagram test is performed on the display signal received by the driver chip from the timing controller in the first to Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals of the driver chip and the compensation values;

[0070] The correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

[0071] In a specific example, Figure 4 As shown, the display device includes two groups of driver chips, the first group of driver chips includes 6 driver chips, and the second group of driver chips includes 6 driver chips, that is, K=6; wherein the first group of driver chips includes a first driver chip 310, a second driver chip 320, a third driver chip 330, a fourth driver chip 340, a fifth driver chip 350 and a sixth driver chip 360; the second group of driver chips includes a first driver chip 311, a second driver chip 321, a third driver chip 331, a fourth driver chip 341, a fifth driver chip 351 and a sixth driver chip 361. Further, the two groups of driver chips are arranged at intervals along the first direction X, and the timing controller 20 is located at the center of the two groups of driver chips in the first direction X.

[0072] Furthermore, the first driver chip 310 in the first group of driver chips and the first driver chip 311 in the second group of driver chips are symmetrically arranged compared to the timing controller 20; the second driver chip 320 in the first group of driver chips and the second driver chip 321 in the second group of driver chips are symmetrically arranged compared to the timing controller 20; the third driver chip 330 in the first group of driver chips and the third driver chip 331 in the second group of driver chips are symmetrically arranged compared to the timing controller 20; the fourth driver chip 340 in the first group of driver chips and the fourth driver chip 341 in the second group of driver chips are symmetrically arranged compared to the timing controller 20; the fifth driver chip 350 in the first group of driver chips and the fifth driver chip 351 in the second group of driver chips are symmetrically arranged compared to the timing controller 20; the sixth driver chip 360 in the first group of driver chips and the sixth driver chip 361 in the second group of driver chips are symmetrically arranged compared to the timing controller 20.

[0073] In a specific example, the number of working temperature intervals is set to 5, that is, M=5. Further, the total range of the working temperature is -20°C to 60°C. Further, the first setting working temperature interval is greater than or equal to -20°C and less than -10°C, the second setting working temperature interval is greater than or equal to -10°C and less than 0°C, the third setting working temperature interval is greater than or equal to 0°C and less than 25°C, the fourth setting working temperature interval is greater than or equal to 25°C and less than 40°C, and the fifth setting working temperature interval is greater than or equal to 40°C and less than 60°C.

[0074] This embodiment sets the operating temperature to multiple operating temperature ranges based on the performance of the driver chip. Compared with using the compensation value corresponding to the optimal eye diagram data of the eye diagram test of the driver chip at each temperature as the compensation value corresponding to the driver chip at each temperature, it can simplify the test process, improve the test efficiency, and the test method is simple and easy to implement.

[0075] In a specific example, there are 8 set compensation values ​​available for selection in the compensation value chart, namely, the first compensation value is 00dB, the second compensation value is 3.0dB, the third compensation value is 4.5dB, the fourth compensation value is 6.0dB, the fifth compensation value is 7.5dB, the sixth compensation value is 9.0dB, the seventh compensation value is 10.5dB and the eighth compensation value is 12.0dB.

[0076] In a specific example, Figure 4As shown, taking the first driver chip 310 in the first group of driver chips as an example, in the first set working temperature range (for example, the temperature is greater than or equal to -20°C and less than -10°C), the display signal from the timing controller 20 received by the first driver chip 310 is compensated by a first compensation value of 0.0dB, and then an eye diagram test is performed using an oscilloscope to obtain first eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by a second compensation value of 3.0dB, and then an eye diagram test is performed using an oscilloscope to obtain second eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by a third compensation value of 4.5dB, and then an eye diagram test is performed using an oscilloscope to obtain third eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by a fourth compensation value of 6.0dB, and then an eye diagram test is performed using an oscilloscope to obtain fourth eye diagram data; The display signal from the timing controller 20 received by the first driver chip 310 is compensated by using the fifth compensation value of 7.5dB, and then an eye diagram test is performed using an oscilloscope to obtain fifth eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by using the sixth compensation value of 9.0dB, and then an eye diagram test is performed using an oscilloscope to obtain sixth eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by using the seventh compensation value of 10.5dB, and then an eye diagram test is performed using an oscilloscope to obtain seventh eye diagram data; the display signal from the timing controller 20 received by the first driver chip 310 is compensated by using the eighth compensation value of 12.0dB, and then an eye diagram test is performed using an oscilloscope to obtain eighth eye diagram data; the compensation value corresponding to the optimal eye diagram data from the first eye diagram data to the eighth eye diagram data is used as the compensation value corresponding to the first set operating temperature range of the first driver chip 310.

[0077] Furthermore, taking the first driver chip 310 as an example, the above operations are performed in the second set working temperature range (for example, the temperature is greater than or equal to -10°C and less than 0°C), the third set working temperature range (for example, the temperature is greater than or equal to 0°C and less than 25°C), the fourth set working temperature range (for example, the temperature is greater than or equal to 25°C and less than 40°C) and the fifth set working temperature range (for example, the temperature is greater than or equal to 40°C and less than 60°C), respectively, to obtain the compensation values ​​corresponding to the second set working temperature range, the third set working temperature range, the fourth set working temperature range and the fifth set working temperature range of the first driver chip 310, and then obtain the correspondence table between each temperature range and the compensation value of the first driver chip 310.

[0078] It should be noted that the method for determining the corresponding relationship table between the temperature range and the compensation value of the second driver chip 320, the third driver chip 330, the fourth driver chip 340, the fifth driver chip 350 and the sixth driver chip 360 in the first group of driver chips is the same as the method for determining the corresponding relationship table between the temperature range and the compensation value of the first driver chip 310. Thus, the corresponding relationship table between the temperature range and the compensation value of the first driver chip 310 to the sixth driver chip 360 in the first group of driver chips can be obtained.

[0079] In a specific example, Figure 4 As shown, the first driver chip 310, the second driver chip 320, the third driver chip 330, the fourth driver chip 340, the fifth driver chip 350 and the sixth driver chip 360 in the first group of driver chips are respectively symmetrically arranged with the first driver chip 311, the second driver chip 321, the third driver chip 331, the fourth driver chip 341, the fifth driver chip 351 and the sixth driver chip 361 in the second group of driver chips compared with the timing controller 20. Therefore, taking the first driver chip 310 in the first group of driver chips and the second driver chip 311 in the second group of driver chips as examples, the corresponding relationship table between the temperature interval and the compensation value of the first driver chip 310 in the first group of driver chips is used as the corresponding relationship table between the temperature interval and the compensation value of the first driver chip 311 in the second group of driver chips.

[0080] Further, the correspondence table between the temperature interval and the compensation value of the second driver chip 320 in the first group of driver chips, the correspondence table between the temperature interval and the compensation value of the third driver chip 330 in the first group of driver chips, the correspondence table between the temperature interval and the compensation value of the fourth driver chip 340 in the first group of driver chips, the correspondence table between the temperature interval and the compensation value of the fifth driver chip 350 in the first group of driver chips, and the correspondence table between the temperature interval and the compensation value of the sixth driver chip 360 in the first group of driver chips are respectively used as the correspondence table between the temperature interval and the compensation value of the second driver chip 321 in the second group of driver chips, the correspondence table between the temperature interval and the compensation value of the third driver chip 331 in the second group of driver chips, the correspondence table between the temperature interval and the compensation value of the fourth driver chip 341 in the second group of driver chips, the correspondence table between the temperature interval and the compensation value of the fifth driver chip 351 in the second group of driver chips, and the correspondence table between the temperature interval and the compensation value of the sixth driver chip 361 in the second group of driver chips.

[0081] In this embodiment, since the first group of driver chips and the second group of driver chips are symmetrically arranged compared to the timing controller, the correspondence table between the temperature ranges and compensation values ​​of all driver chips can be obtained by testing the correspondence table between the temperature ranges and compensation values ​​of one group of driver chips, which can reduce the number of tests, save the time cost of testing, and improve the test efficiency by 50%.

[0082] In a possible implementation, the eye diagram test of the display signal received by the driver chip from the timing controller after being compensated using different compensation values ​​includes: performing an eye diagram test on the display signal received by the driver chip from the timing controller after being compensated using multiple set compensation values.

[0083] In a specific example, Figure 3 As shown, taking the first driver chip 301 as an example, in the first set working temperature range (for example, the temperature is greater than or equal to -20°C and less than -10°C), the display signal received by the first driver chip 301 from the timing controller 20 is compensated by the first compensation value 0.0dB, the second compensation value 3.0dB, the third compensation value 4.5dB, the fourth compensation value 6.0dB, the fifth compensation value 7.5dB, the sixth compensation value 9.0dB, the seventh compensation value 10.5dB and the eighth compensation value 12.0dB in sequence, and then an eye diagram test is performed using an oscilloscope to obtain the first eye diagram data, the second eye diagram data, the third eye diagram data, the fourth eye diagram data, the fifth eye diagram data, the sixth eye diagram data, the seventh eye diagram data and the eighth eye diagram data of the first driver chip 301 in the first set working temperature range in sequence, and the compensation value corresponding to the optimal eye diagram data among the first eye diagram data to the eighth eye diagram data is used as the compensation value corresponding to the first set working temperature range of the first driver chip 301.

[0084] In another specific example, Figure 4As shown, taking the first driver chip 310 in the first group of driver chips as an example, in the first set working temperature range (for example, the temperature is greater than or equal to -20°C and less than -10°C), the display signal received by the first driver chip 310 from the timing controller 20 is compensated by the first compensation value of 0.0dB, the second compensation value of 3.0dB, the third compensation value of 4.5dB, the fourth compensation value of 6.0dB, the fifth compensation value of 7.5dB, the sixth compensation value of 9.0dB, the seventh compensation value of 10.5dB and the eighth compensation value of 12.0dB in sequence, and then an eye diagram test is performed using an oscilloscope to obtain the first eye diagram data, the second eye diagram data, the third eye diagram data, the fourth eye diagram data, the fifth eye diagram data, the sixth eye diagram data, the seventh eye diagram data and the eighth eye diagram data of the first driver chip 310 in the first set working temperature range in sequence, and the compensation value corresponding to the optimal eye diagram data among the first eye diagram data to the eighth eye diagram data is used as the compensation value corresponding to the first set working temperature range of the first driver chip 301.

[0085] This embodiment sets the first compensation value to the eighth compensation value so that the five set operating temperature ranges of each driver chip have corresponding compensation values, thereby improving the flexibility and accuracy of compensation value selection, improving the compensation effect of the driver chip, and improving the applicability of the driving method in the display device.

[0086] In a possible implementation, the display device includes N driver chips, the set operating temperature intervals are M, N and M are integers greater than 1, and the driving method further includes:

[0087] A test display device is provided, wherein the test display device comprises a test timing controller and N test driving chips;

[0088] For each test driver chip, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip;

[0089] The correspondence table between the temperature range and the compensation value of the n-th test driving chip is used as the correspondence table between the temperature range and the compensation value of the n-th driving chip.

[0090] In a specific example, the display device for testing may also include a display panel for testing, a printed circuit board for testing, a temperature collector for testing, and a flexible flat cable for testing.

[0091] This embodiment tests only N test driver chips in one or several test display devices to obtain a correspondence table between the temperature ranges and compensation values ​​of the test driver chips, and then obtains a correspondence table between the temperature ranges and compensation values ​​of the driver chips of the display device product disclosed herein, and stores the correspondence table in the product. This embodiment simplifies the test process, improves the feasibility of the test method, improves the applicability of the test method, and effectively reduces the test cost.

[0092] In a possible implementation, the display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared to the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes:

[0093] A test display device is provided, the test display device comprising a test timing controller, a first group of test driver chips and a second group of test driver chips, the first group of test driver chips and the second group of test driver chips respectively comprising K test driver chips, the kth test driver chip in the first group of test driver chips and the kth test driver chip in the second group of test driver chips being symmetrically arranged relative to the test timing controller;

[0094] For each test driver chip in the first group of test driver chips, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip;

[0095] The correspondence table between the temperature range and the compensation value of the kth test driver chip in the first group of test driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips and the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

[0096] On the basis of simplifying the test process, this embodiment can reduce the number of tests, save the time cost of testing, and improve the test efficiency by 50% by symmetrically arranging the kth test driver chip in the first group of test driver chips and the kth test driver chip in the second group of test driver chips compared to the test timing controller.

[0097] In a possible implementation, the eye diagram test of the display signal received by the test driver chip from the test timing controller after being compensated using different compensation values ​​includes: performing an eye diagram test on the display signal received by the test driver chip from the test timing controller after being compensated using multiple set compensation values.

[0098] This embodiment, on the basis of simplifying the test process, performs eye diagram testing after compensation using multiple set compensation values, thereby improving the flexibility and accuracy of compensation value selection, improving the compensation effect of the driver chip, and improving the applicability of the driving method in the display device.

[0099] In a possible implementation manner, the multiple set working temperature intervals have different interval lengths.

[0100] In a specific example, five working temperature intervals are set, and the total working temperature range is -20°C to 60°C. Further, the first working temperature interval is set to be greater than or equal to -20°C and less than -10°C; the second working temperature interval is set to be greater than or equal to -10°C and less than 0°C; the third working temperature interval is set to be greater than or equal to 0°C and less than 25°C; the fourth working temperature interval is set to be greater than or equal to 25°C and less than 40°C; the fifth working temperature interval is set to be greater than or equal to 40°C and less than 60°C.

[0101] In a specific example, the range of the interval length of the set working temperature interval is 10 to 25. Further, the length of the first set working temperature interval is 10; the length of the second set working temperature interval is 10; the length of the third set working temperature interval is 25; the fourth set working temperature interval is 15; and the fifth set working temperature interval is 20.

[0102] In a specific example, 8 set working temperature intervals can be set, and the total working temperature range is -20℃~60℃. The interval lengths of the 8 set working temperature intervals are different, and the interval lengths of the set working temperature intervals range from 5 to 25; further, 7 set working temperature intervals can be set, and the total working temperature range is -20℃~60℃. The interval lengths of the 7 set working temperature intervals are different, and the interval lengths of the set working temperature intervals range from 5 to 25; further, 6 set working temperature intervals can be set, and the total working temperature range is -20℃~60℃. The interval lengths of the 6 set working temperature intervals are different, and the interval lengths of the set working temperature intervals range from 5 to 25.

[0103] In a specific example, there are 8 compensation values ​​to be set, namely, the first compensation value is 00dB, the second compensation value is 3.0dB, the third compensation value is 4.5dB, the fourth compensation value is 6.0dB, the fifth compensation value is 7.5dB, the sixth compensation value is 9.0dB, the seventh compensation value is 10.5dB and the eighth compensation value is 12.0dB.

[0104] The length of the set working temperature interval in this embodiment is set according to the display characteristics of the display device product. By setting different interval lengths of the set working temperature interval, it is possible to more realistically reflect the temperature changes in the actual application of the display device product, thereby improving the flexibility of setting the working temperature interval. At the same time, by setting different interval lengths of the working temperature interval, it is possible to compensate for the display signal in the temperature change interval in the actual application of the display device product, which has practical application value.

[0105] Another embodiment of the present invention provides a display device, including a timing controller, multiple driver chips and a display panel; the driver chip is used to obtain the current operating temperature of the display device; the driver chip is also used to search a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature, and obtain a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on the display signal corresponding to the driver chip under multiple set operating temperature intervals; the driver chip is also used to compensate the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and output a data voltage according to the compensated display signal.

[0106] In a specific example, the display device includes a system on chip, a timing controller and a driver, wherein the driver includes a driver chip (Driver IC), and the timing controller includes a timing control chip (TCON IC), a power management chip (PMIC) and a Gamma IC.

[0107] In another specific example, a display device includes a system on chip and a driver, wherein the system on chip includes a TCON IC, a PM IC, and a GAMMA IC; and the driver includes a driving chip.

[0108] In yet another specific example, a display device includes a system on chip and a driver, wherein the system on chip includes a TCON IC; and the driver includes a driving chip, a PM IC, and a GAMMA IC.

[0109] This embodiment sets the operating temperature to multiple operating temperature ranges based on the performance of the driver chip. Compared with using the compensation value corresponding to the optimal eye diagram data of the eye diagram test of the driver chip at each temperature as the compensation value corresponding to the driver chip at each temperature, it can simplify the test process, improve the test efficiency, and the test method is simple and easy to implement.

[0110] In a possible implementation manner, the driver chip acquiring the current operating temperature of the display device includes: the driver chip determining the current operating temperature of the display device according to a sensing signal from a temperature sensor.

[0111] In a specific example, Figure 5 As shown, the display device includes a system mainboard 100, a flexible flat cable 200, a printed circuit board 300 and a chip-on-chip film 400; wherein the chip-on-chip film 400 includes a driver chip 900; the mainboard circuit 100 can be a timing control mainboard, a system on chip or a system on chip including a timing control chip; further, the display device also includes a display panel 500, a timing controller 600, a thermistor 700, a resistor 800 and a power management chip 1000; wherein the resistance value of the thermistor 700 changes with temperature, and the resistance value of the resistor 800 is a fixed resistance value.

[0112] In a specific example, Figure 5 As shown, the thermistor 700 is disposed on the system mainboard 100 , for example, the thermistor 700 can be disposed on a timing control mainboard, a system on chip, or a system on chip including a timing control chip, and the resistor 800 is disposed on the printed circuit board 300 .

[0113] In another specific example, the positions of the thermistor and the resistor are interchangeable, that is, the thermistor is set on the printed circuit board, and the resistor is set on the system mainboard, for example, the resistor can be set on the timing control mainboard, the system on chip, or the system on chip including the timing control chip.

[0114] In a specific example, Figure 5 As shown, the driving chip 900 determines the current operating temperature of the display device according to the sensing signal from the temperature sensor (eg, thermistor 700 ).

[0115] This embodiment adds a thermistor to the timing control mainboard, the system on chip, or the system on chip including the timing control chip, so that the display device outputs different voltages to the driver chip at different temperatures, and then the driver chip calls different set compensation values ​​according to the received voltage range to ensure the signal quality in high temperature environment or low temperature environment. This embodiment couples the temperature sensor in the transmission path of the display signal, which can simplify the circuit design, save design space, and improve the accuracy of temperature acquisition.

[0116] In a possible implementation, the temperature sensor is a temperature sensing circuit, which is used to sense the current operating temperature of a control board or a printed circuit board in the display device.

[0117] In a specific example, Figure 5 As shown, the first end of the thermistor 700 is coupled to the power management chip 1000 through the timing controller 600, the second end of the thermistor 700 is connected to the first end of the resistor 800 through the flexible flat cable 200, the first end of the resistor 800 is connected to the driving chip 900, and the second end of the resistor 800 is grounded, thereby forming a voltage divider circuit with the thermistor 700 and the resistor 800.

[0118] Furthermore, the power management chip 1000 outputs a voltage VCC to the first end of the thermistor 700. The voltage VCC may also be generated by other circuits as long as the generated voltage VCC meets the design specifications of the driver chip. After passing through the thermistor 700, the voltage VCC is divided by the resistor 800 and the output voltage Vout is sent to the driver chip 900.

[0119] In a specific example, a correspondence table between temperature intervals and compensation values ​​is stored in the driver chip. Further, as shown in Table 1, a correspondence table between set operating temperature intervals, voltage divider circuit output voltage Vout and compensation values ​​is stored in the driver chip. Further, compensation value N1, compensation value N2, compensation value N3, compensation value N4 and compensation value N5 correspond to the ranges of different voltage divider circuit output voltages Vout, such as V1-V2, V3-V4, V5-V6, V7-V8 and V9-V10, respectively, and the voltage divider circuit output voltage Vout changes with the change of thermistor, so the temperature change of the display device, the voltage divider circuit output voltage Vout and the compensation value are associated.

[0120] Table 1 Correspondence table of setting working temperature range, voltage divider circuit output voltage Vout and compensation value

[0121] Set the operating temperature range (T) Vout Compensation value -20℃≤T<-10℃ V1~V2 N1 -10℃≤T<0℃ V3~V4 N2 0℃≤T<25℃ V5~V6 N3 25℃≤T<40℃ V7~V8 N4 40℃≤T<60℃ V9~V10 N5

[0122] This embodiment forms a temperature sensing circuit using thermistors and resistors, and couples the temperature sensing circuit in the transmission path of the display signal of the display device, so as to conveniently detect the current operating temperature of the control board or the printed circuit board. The operating temperature obtained in this embodiment is the temperature of the transmission path of the display signal, so that the temperature acquisition is more accurate, the accuracy of the eye diagram test results is improved, the accuracy of the compensation value determination is improved, the accuracy of the signal compensation is improved, and the compensation effect of the display signal is improved. It is suitable for display products with ultra-large size, high refresh rate and high resolution, and the eye diagram quality is effectively improved by dynamically adjusting the compensation value according to the ambient temperature through the driver chip.

[0123] Obviously, the above embodiments of the present disclosure are merely examples for clearly illustrating the present disclosure, and are not limitations on the implementation methods of the present disclosure. For ordinary technicians in this field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present disclosure are still within the protection scope of the present disclosure.

Claims

1. A method for driving a display panel, characterized in that: The display device includes a timing controller, a plurality of driving chips and the display panel, and the driving method includes: The driving chip acquires the current operating temperature of the display device; The driver chip searches a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature to obtain a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on a display signal corresponding to the driver chip under a plurality of set operating temperature intervals; The driving chip compensates the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and outputs a data voltage according to the compensated display signal.

2. The driving method according to claim 1, characterized in that: The display device includes N driving chips, the set operating temperature intervals are M, N and M are integers greater than 1, and the driving method further includes: For each driver chip, an eye diagram test is performed on the display signal from the timing controller received by the driver chip in the 1st to the Mth set operating temperature ranges after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature range is used as the compensation value corresponding to the mth set operating temperature range of the driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature ranges of the driver chip and the compensation values.

3. The driving method according to claim 1, characterized in that: The display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared with the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes: For each driver chip in the first group of driver chips, an eye diagram test is performed on the display signal received by the driver chip from the timing controller in the first to Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals of the driver chip and the compensation values; The correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

4. The driving method according to claim 2 or 3, characterized in that: The step of performing an eye diagram test on the display signal received by the driver chip from the timing controller after compensating the display signal using different compensation values ​​comprises: The display signal received by the driving chip from the timing controller is subjected to an eye diagram test after being compensated by using a plurality of set compensation values.

5. The driving method according to claim 1, characterized in that: The display device includes N driving chips, the set operating temperature intervals are M, N and M are integers greater than 1, and the driving method further includes: A test display device is provided, wherein the test display device comprises a test timing controller and N test driving chips; For each test driver chip, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip; The correspondence table between the temperature range and the compensation value of the n-th test driver chip is used as the correspondence table between the temperature range and the compensation value of the n-th driver chip.

6. The driving method according to claim 1, characterized in that: The display device includes a first group of driver chips and a second group of driver chips, the first group of driver chips and the second group of driver chips respectively include K driver chips, the kth driver chip in the first group of driver chips and the kth driver chip in the second group of driver chips are symmetrically arranged compared with the timing controller, the set operating temperature interval is M, K and M are respectively integers greater than 1, k∈[1,K], and the driving method further includes: A test display device is provided, the test display device comprising a test timing controller, a first group of test driver chips and a second group of test driver chips, the first group of test driver chips and the second group of test driver chips respectively comprising K test driver chips, the kth test driver chip in the first group of test driver chips and the kth test driver chip in the second group of test driver chips being symmetrically arranged relative to the test timing controller; For each test driver chip in the first group of test driver chips, an eye diagram test is performed on the display signal received by the test driver chip from the test timing controller in the 1st to the Mth set operating temperature intervals after being compensated by using different compensation values, and the compensation value corresponding to the optimal eye diagram data of the eye diagram test in the mth set operating temperature interval is used as the compensation value corresponding to the mth set operating temperature interval of the test driver chip, m∈[1,M], to obtain a corresponding relationship table between the temperature intervals and the compensation values ​​of the test driver chip; The correspondence table between the temperature range and the compensation value of the kth test driver chip in the first group of test driver chips is used as the correspondence table between the temperature range and the compensation value of the kth driver chip in the first group of driver chips and the correspondence table between the temperature range and the compensation value of the kth driver chip in the second group of driver chips.

7. The driving method according to claim 5 or 6, characterized in that: The step of performing an eye diagram test on the display signal received by the test driving chip from the test timing controller after compensating the display signal using different compensation values ​​comprises: The display signal received by the test driving chip from the test timing controller is subjected to an eye diagram test after being compensated by using a plurality of set compensation values.

8. The driving method according to claim 1, characterized in that: The multiple set working temperature intervals have different interval lengths.

9. A display device, characterized in that: Including a timing controller, multiple driver chips and a display panel; The driving chip is used to obtain the current operating temperature of the display device; The driver chip is further used to search a pre-stored correspondence table of temperature intervals and compensation values ​​according to the current operating temperature to obtain a compensation value corresponding to the temperature interval where the current operating temperature is located, wherein the correspondence table of temperature intervals and compensation values ​​is determined by performing an eye diagram test on a display signal corresponding to the driver chip under multiple set operating temperature intervals; The driving chip is further used to compensate the display signal received from the timing controller according to the compensation value corresponding to the temperature interval where the current operating temperature is located, and output a data voltage according to the compensated display signal.

10. The display device according to claim 9, characterized in that: The driver chip acquiring the current operating temperature of the display device includes: the driver chip determining the current operating temperature of the display device according to a sensing signal from a temperature sensor.

11. The display device according to claim 10, characterized in that: The temperature sensor is a temperature sensing circuit, which is used to sense the current operating temperature of the control board or printed circuit board in the display device.

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