WO2022222176A1 - 显示装置及其驱动方法、电子设备 - Google Patents

显示装置及其驱动方法、电子设备 Download PDF

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Publication number
WO2022222176A1
WO2022222176A1 PCT/CN2021/091353 CN2021091353W WO2022222176A1 WO 2022222176 A1 WO2022222176 A1 WO 2022222176A1 CN 2021091353 W CN2021091353 W CN 2021091353W WO 2022222176 A1 WO2022222176 A1 WO 2022222176A1
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Prior art keywords
display device
compensation value
compensation
display
driving parameter
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PCT/CN2021/091353
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English (en)
French (fr)
Inventor
占慧兰
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武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/419,859 priority Critical patent/US11699381B2/en
Publication of WO2022222176A1 publication Critical patent/WO2022222176A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007Display of intermediate tones
    • G09G3/2074Display of intermediate tones using sub-pixels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping

Definitions

  • the present application relates to the field of display, and in particular, to a display device, a driving method thereof, and an electronic device.
  • the existing dimming modes of the display panel include a pulse modulation (Pulse width modulation, PWM) mode and a DC (Direct Current, DC) dimming mode.
  • PWM Pulse width modulation
  • DC Direct Current, DC dimming mode.
  • Light mode is widely used because there is no screen flickering.
  • the brightness of some areas of the display panel cannot reach an ideal state, resulting in uneven brightness (mura) of the display panel during the display process. Therefore, it is necessary to compensate the brightness of the display panel.
  • the brightness of the position where the brightness of the display panel is high is decreased, and the brightness of the position where the brightness of the display panel is low is increased, so as to realize the uniformity of the brightness of the display panel.
  • the compensation value of the green sub-pixels will first drop to zero during compensation. There are luminance values of blue sub-pixels and luminance values of red sub-pixels, and purple dots appear during display, resulting in poor display of the display panel.
  • the compensation effect is poor in the driving process of the existing display panel, resulting in the problem of poor display of the display panel.
  • Embodiments of the present application provide a display device, a driving method thereof, and an electronic device, so as to alleviate the technical problem of poor compensation effect in the driving process of the existing display panel.
  • An embodiment of the present application provides a method for driving a display device, and the method for driving a display device includes:
  • the display device is driven using the second compensation value and the first driving parameter.
  • the step of acquiring the first driving parameter and the first compensation value of the display device includes:
  • the first driving parameter and the first compensation value of the display device are determined.
  • the step of determining the abnormal driving parameter of the display device according to the first driving parameter and the first compensation value of the display device includes:
  • An abnormal driving parameter of the display device is determined according to the second driving parameter and the minimum compensation value of each pixel.
  • the step of determining the abnormal driving parameter of the display device according to the second driving parameter and the minimum compensation value of each pixel includes:
  • the sub-compensation value of each sub-pixel and the minimum compensation value determine whether the sub-compensation value of each sub-pixel is less than the minimum compensation value
  • the abnormal driving parameter corresponding to the sub-pixel is determined.
  • the step of determining the abnormal driving parameters of the display device according to the driving parameters of the display device and the first compensation value includes:
  • the first driving parameter and the first compensation value of the abnormal display area of the display device are acquired to obtain the abnormal driving parameter.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • a second compensation value of the display device is determined according to the abnormal driving parameter of the display device and the compensation accuracy.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameters of the display device and the compensation precision includes:
  • the compensation accuracy includes the coefficient compensation accuracy
  • a second compensation value of the display device is determined according to the first reference compensation value and the second reference compensation coefficient.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • the compensation accuracy includes the voltage compensation accuracy
  • a second compensation value of the display device is determined according to the second reference compensation value and the first reference compensation coefficient.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • the first reference compensation coefficient and the first reference compensation value determine the second reference compensation coefficient and the second reference compensation value of the display device
  • a second compensation value of the display device is determined according to the second reference compensation coefficient and the second reference compensation value.
  • the method further includes:
  • the second compensation value is stored.
  • the present application also discloses a display device, which includes a display device driver and a display panel, wherein the display device driver includes:
  • an acquisition module configured to acquire the first driving parameter and the first compensation value of the display device
  • a first determining module configured to determine the abnormal driving parameter of the display device according to the first driving parameter and the first compensation value of the display device
  • a second determining module configured to determine a second compensation value of the display device according to an abnormal driving parameter of the display device, wherein the absolute value of the first compensation value is greater than the absolute value of the second compensation value;
  • a storage module for storing the second compensation value
  • a driving module for driving the display device using the second compensation value and the first driving parameter.
  • the display device driver is further used to:
  • the first driving parameter and the first compensation value of the display device are determined.
  • the display device driver is further used to:
  • An abnormal driving parameter of the display device is determined according to the second driving parameter and the minimum compensation value of each pixel.
  • the display device driver is further used to:
  • the sub-compensation value of each sub-pixel and the minimum compensation value determine whether the sub-compensation value of each sub-pixel is smaller than the minimum compensation value
  • an abnormal driving parameter corresponding to the sub-pixel is determined.
  • the display device driver is further used to:
  • the first driving parameter and the first compensation value of the abnormal display area of the display device are acquired to obtain the abnormal driving parameter.
  • the display device driver is further used to:
  • the second compensation value of the display device is determined according to the abnormal driving parameters and the compensation accuracy of the display device.
  • the display device driver is further used to:
  • a second compensation value of the display device is determined according to the first reference compensation value and the second reference compensation coefficient.
  • the display device driver is further used to:
  • a second compensation value of the display device is determined according to the second reference compensation value and the first reference compensation coefficient.
  • the display device driver is further used to:
  • the compensation accuracy determining a second reference compensation coefficient and a second reference compensation value of the display device
  • a second compensation value of the display device is determined according to the second reference compensation coefficient and the second reference compensation value.
  • the present application also provides an electronic device, which includes a memory and a processor; the memory stores a computer program, and the processor is configured to run the computer program in the memory to perform the operations in the above-mentioned display device driving method.
  • the present application provides a display device and a driving method thereof.
  • a first driving parameter and a first compensation value of the display device are obtained, and then a display device is determined according to the first driving parameter and the first compensation value of the display device.
  • the abnormal driving parameters of the device are obtained, and then determine the second compensation value of the display device according to the abnormal driving parameters of the display device; and then use the second compensation value and the first driving parameter to drive the display device.
  • the compensation effect of the display panel is poor, the compensation value of the display panel is modified, and the first compensation value is changed to the second compensation value. Since the second compensation value is smaller than the first compensation value, the display panel will not Overcompensation occurs, eliminating purple dots in the display panel and avoiding poor display on the display panel.
  • FIG. 1 is a comparison diagram of a theoretical display brightness curve and an actual display brightness curve of a conventional display device.
  • FIG. 2 is a comparison diagram of the prior art display device before compensation and after compensation.
  • FIG. 3 is a flowchart of a method for driving a display device provided by an embodiment of the present application.
  • FIG. 4 is a graph of compensation coefficients and compensation values of a display device according to an embodiment of the present application.
  • FIG. 5 is a comparison diagram of the first compensation and the second compensation of the display device provided by the embodiment of the present application.
  • FIG. 6 is a first comparison diagram of the first compensation value and the second compensation value of the display device provided by the embodiment of the present application.
  • FIG. 7 is a second comparison diagram of the first compensation value and the second compensation value of the display device according to the embodiment of the present application.
  • FIG. 8 is a schematic diagram of a display device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a hardware structure of an embodiment of a display device in an embodiment of the present application.
  • the PWM mode and the DC mode use a set of gamma bands, so the mura of the low-brightness mid-grayscale in the DC mode is the same as the high-brightness low-grayscale mura in the PWM mode.
  • the normal maximum display brightness of PWM mode is 500nit (nits)
  • the calculation formula of the gamma curve is:
  • L is the brightness
  • Lmax is the maximum brightness
  • Gray is the gray scale
  • the 2nit Gray64 in DC mode is roughly equal to the 500nit Gray5 in PWM mode, that is, the mura of 64 grayscales in DC mode is 2nit and the 500nit of PWM mode is 5 grays.
  • the mura of the order is the same.
  • the abscissa is the gray scale
  • the ordinate is the brightness.
  • the theoretical display brightness of the display panel in each gray scale is Curve 1
  • the actual display brightness of the display panel in each gray scale is Curve 2.
  • the compensation process of the existing display panel is to reduce the brightness of the position with high brightness, and increase the brightness of the position of the display panel with low brightness.
  • the corresponding PWM mode is 500nit Gray5, that is, DC
  • the maximum gray level that can be lowered in the mode is 5 gray levels.
  • the red, green and blue gray levels of the display panel need to be reduced by 5 gray levels.
  • the brightness accounts for a large proportion, so the green sub-pixel only needs to reduce 3 gray levels, and at this time, the red sub-pixel and blue sub-pixel will display more than two gray levels, resulting in the red sub-pixel and blue sub-pixel during display. Pixels are composited into purple, and purple dots appear on the display panel.
  • the display panel includes a normal display area 11 and an over-bright display area 12 .
  • (a) in FIG. 2 is the display effect diagram before the compensation of the display panel, and (b) in FIG. 2 is the display panel after compensation. It can be seen from (b) in FIG. 2 that after compensation, the brightness of the over-bright display area 12 is reduced, but purple dots 121 appear in the over-bright display area 12, resulting in poor display on the display panel.
  • embodiments of the present application provide a display device and a driving method thereof, so as to alleviate the above technical problems.
  • an embodiment of the present application provides a method for driving a display device, and the method for driving a display device includes:
  • An embodiment of the present application provides a display panel driving method.
  • the display panel driving method modifies the compensation value of the display panel when the compensation effect of the display panel is poor, and modifies the first compensation value to the second compensation value.
  • the second compensation value is smaller than the first compensation value, so that the display panel will not be over-compensated, the purple dots in the display panel will be eliminated, and the display panel will be prevented from displaying poor display.
  • the first driving parameter may include the first driving voltage
  • the first compensation value may include the first compensation voltage and the first compensation gray scale
  • the abnormal driving parameter may include the abnormal driving voltage
  • the second compensation value may include the second compensation value. Compensation voltage and second compensation grayscale.
  • the step of acquiring the first driving parameter and the first compensation value of the display device may include:
  • the first driving parameter and the first compensation value of the display device are determined according to the gray scale to be displayed and the brightness to be displayed in the first display mode, and the corresponding relationship between the first display mode and the second display mode.
  • the first driving parameter and the first compensation value of the display panel can be determined, so that the display The panel can be displayed according to the display mode, and the driving parameters and compensation values of different display modes are programmed to the driver chip, and the corresponding driving is performed to make the display panel display the picture to be displayed.
  • the first driving parameter is the actual driving parameter of the display device, and by compensating the first driving parameter by the first compensation value, the theoretical driving parameter of the display device can be obtained, so that the display panel can display normally, but The problem of purple dots may occur in actual compensation. Therefore, the first compensation value is modified to the second compensation value, so that the first driving parameter can be compensated when the display device is driven by the first driving parameter and the second compensation value. And the display device will not show poor display.
  • the first display mode may be a DC mode
  • the second display mode may be a PWM mode
  • the step of determining the abnormal driving parameter of the display device according to the first driving parameter and the first compensation value of the display device includes:
  • An abnormal driving parameter of the display device is determined according to the second driving parameter and the minimum compensation value of each pixel.
  • the second driving parameter is a driving parameter after each pixel is compensated by the first compensation value
  • the minimum compensation value is a compensation value that does not appear purple dots on the display panel.
  • the area where the purple dot appears in the display device can be determined, so as to process the area where the purple spot appears, Make the display panel display normally.
  • the step of determining the abnormal driving parameter of the display device according to the second driving parameter and the minimum compensation value of each pixel includes:
  • the sub-compensation value of each sub-pixel and the minimum compensation value determine whether the sub-compensation value of each sub-pixel is less than the minimum compensation value
  • the abnormal driving parameter corresponding to the sub-pixel is determined. That is, after the second driving parameter of each pixel is obtained, the sub-compensation value of each sub-pixel is determined, and then by comparing the sub-compensation value of the sub-pixel with the minimum compensation value, it can be determined whether an abnormal driving parameter occurs. For example, if the minimum compensation value of the green sub-pixel is -8 gray levels, and the sub-compensation value of the green sub-pixel is -9 gray levels at this time, it can be judged that an abnormal driving parameter occurs at this time, and it can be determined according to the sub-pixel The compensation value determines the corresponding abnormal drive parameters and handles them accordingly.
  • the sub-compensation value includes the sub-compensation voltage and the sub-compensation gray scale
  • the minimum compensation value includes the minimum compensation voltage and the minimum compensation gray scale
  • the sub-compensation value and the minimum compensation value of the green sub-pixel can be compared to determine the abnormal driving parameters of the display panel.
  • the abnormal driving parameters of the display panel can be determined according to the first compensation value and the minimum compensation value of the pixel.
  • the determination may be made according to the sub-compensation value of each sub-pixel. For example, at a certain brightness and gray level, the gray level of the green sub-pixel of the display panel will drop to 0, then a purple point must appear at this time, the compensation value corresponding to the brightness and gray scale can be used as the minimum compensation value, and then according to the first compensation value of the pixel or the sub-compensation value of the sub-pixel, and the minimum compensation value, determine the abnormality drive parameters.
  • the step of determining the abnormal driving parameters of the display device according to the driving parameters of the display device and the first compensation value includes:
  • the first driving parameter and the first compensation value of the abnormal display area of the display device are acquired to obtain the abnormal driving parameter.
  • the display device is driven to observe the display effect of the display device, thereby determining the abnormal display area of the display device according to the display effect of the display device, and correspondingly, the abnormal driving parameter corresponding to the abnormal display area can be determined.
  • the abnormal display area of the display device when the abnormal display area of the display device is determined through the display screen and the standard display screen of the display device, a purple dot may appear on the display screen of the display device, and the area can be regarded as the abnormal display area.
  • the abnormal driving parameters can also be determined by comparing the display screen with the standard display screen, and using different areas of the two display screens as abnormal display areas.
  • the image recognition device can be used for comparison, so as to avoid errors in human observation.
  • the step of determining the abnormal driving parameter of the display device and determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • a second compensation value of the display device is determined according to the abnormal driving parameter of the display device and the compensation accuracy.
  • the compensation value of the display device can be adjusted according to the compensation accuracy and the abnormal driving parameter, so that when the second compensation value and the first driving parameter drive the display device, the display device is displayed The device does not display abnormality.
  • the compensation accuracy of the display device is 0.5 gray scales
  • the accuracy of the compensation value of the display device can be determined according to the corresponding relationship between gray scales and voltages, and then according to the accuracy of the compensation value of the display device,
  • the abnormal drive parameters are modified to obtain the drive parameters of the normal display.
  • the first compensation value can also be modified to obtain the second compensation value; the first compensation value is obtained according to the abnormal driving parameters, and then According to the first compensation value and the compensation precision, the second compensation value is obtained.
  • the voltage compensation accuracy is 0.5 grayscales
  • the first compensation value is -8 grayscales
  • the second compensation value can be -7.5 grayscales, so as to avoid abnormal display when compensating the display device.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameters of the display device and the compensation precision includes:
  • the compensation accuracy includes the coefficient compensation accuracy
  • a second compensation value of the display device is determined according to the first reference compensation value and the second reference compensation coefficient. After the abnormal driving parameters of the display device are obtained, considering that the first compensation value of the display device is determined by the first reference compensation coefficient and the first reference compensation value, when the display device has abnormal display, the compensation value is based on the first reference compensation of the display device.
  • the coefficient and the coefficient compensation accuracy determine the second reference compensation coefficient of the display device, so that the absolute value of the second compensation value of the display device determined by the second reference compensation coefficient and the first reference compensation value can be smaller than the absolute value of the first compensation value , there will be no display abnormality when the display device is displaying.
  • the first reference compensation coefficient is a compensation coefficient corresponding to a first compensation value of the display device
  • the first reference compensation value is a reference compensation value corresponding to the first compensation value
  • the first compensation value is determined by the first compensation value.
  • the reference compensation coefficient and the first reference compensation value are determined.
  • the coefficient compensation accuracy is the compensation accuracy of the first reference compensation coefficient, and the accuracy may be 0.01 or 0.1.
  • the embodiment of the present application is not limited to this, and the compensation accuracy is set according to requirements.
  • the voltage compensation accuracy is the compensation accuracy of the first reference compensation value, and the accuracy is the accuracy that affects the display screen of the display device. For example, when the voltage changes by 0.1V, there is a significant difference in the display screen of the display device. Then the voltage compensation accuracy is 0.1V, and the embodiment of the present application is not limited to this, and is set according to actual driving parameters.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • the compensation accuracy includes the voltage compensation accuracy
  • a second compensation value of the display device is determined according to the second reference compensation value and the first reference compensation coefficient.
  • the step of determining the second compensation value of the display device according to the abnormal driving parameter of the display device includes:
  • the first reference compensation coefficient and the first reference compensation value determine the second reference compensation coefficient and the second reference compensation value of the display device
  • a second compensation value of the display device is determined according to the second reference compensation coefficient and the second reference compensation value.
  • the first compensation value of the display device is adjusted so that the display device can display normally when the display device is compensated by the second compensation value
  • the first reference compensation coefficient and the first reference compensation value of the display device can be modified at the same time as required , so as to avoid purple dots in the display device while compensating for the brighter area of the display device.
  • the second reference compensation coefficient is a compensation coefficient corresponding to a second compensation value of the display device
  • the second reference compensation value is a reference compensation value corresponding to the second compensation value
  • the second compensation value is determined by the second compensation value.
  • the reference compensation coefficient and the second reference compensation value are determined.
  • compensation value reference compensation value*compensation coefficient
  • the corresponding PWM mode is 500nit Gray5
  • the normal display area and abnormal display of the display device can be obtained according to the test of the display device
  • the graph of the area is shown in Figure 4, curve 1 is the theoretical curve of 500nit Gray5 in PWM mode, curve 2 is the actual curve of 500nit Gray5 in PWM mode, curve 3 is the actual curve of 2nit Gray64 in DC mode, area 21 is the normal display area, The area 22 is the area where the purple spot appears, and the critical value of the compensation coefficient and the compensation value is obtained when the purple spot appears.
  • the compensation value of the purple spot under different compensation coefficients is as follows:
  • FIG. 5 (a) in FIG. 5 is the display effect of the display device after compensation by the first compensation value, and (b) in FIG. 5 is the display effect of the display device after compensation by the second compensation value,
  • the display device includes a first display area 31 and a second display area 32. After the second display area 32 is compensated, no purple dots appear in the second display area 32, and the display panel can display normally.
  • the abscissa is the pixel
  • the ordinate is the compensation value
  • the curve 1 is the curve of the first compensation value corresponding to each pixel
  • the curve 2 is the curve of the second compensation value corresponding to each pixel.
  • the abscissa is the pixel
  • the ordinate is the compensation value
  • the curve 1 is the curve of the first compensation value corresponding to each pixel
  • the curve 2 is the curve of the second compensation value corresponding to each pixel.
  • an embodiment of the present application provides a display device.
  • the display device includes a display device driver and a display panel.
  • the display device driver includes:
  • an obtaining module 401 configured to obtain a first driving parameter and a first compensation value of the display device
  • a first determining module 402 configured to determine an abnormal driving parameter of the display device according to the first driving parameter and the first compensation value of the display device;
  • a second determination module 403, configured to determine a second compensation value of the display device according to the abnormal driving parameter of the display device; the absolute value of the first compensation value is greater than the absolute value of the second compensation value;
  • a storage module 404 configured to store the second compensation value
  • the driving module 405 is configured to use the second compensation value and the first driving parameter to drive the display device.
  • the display device driver is further used to obtain the corresponding relationship between the first display mode and the second display mode of the display device; obtain the grayscale to be displayed and the brightness to be displayed of the display device in the first display mode ; According to the gray scale to be displayed and the brightness to be displayed of the first display mode, and the corresponding relationship between the first display mode and the second display mode, determine the first driving parameter and the first compensation value of the display device.
  • the display device driver is further configured to determine the second driving parameter and the minimum compensation value of each pixel according to the first driving parameter and the first compensation value of the display device; Two driving parameters and a minimum compensation value to determine the abnormal driving parameters of the display device.
  • the display device driver is further configured to determine the sub-compensation value of the sub-pixels in each pixel according to the second driving parameter of each pixel; according to the sub-compensation value of each sub-pixel and the minimum compensation value, Determine whether the sub-compensation value of each sub-pixel is smaller than the minimum compensation value; when the sub-compensation value of the sub-pixel is smaller than the minimum compensation value, determine the abnormal driving parameter of the display device.
  • the display device driver is further configured to drive the display device according to the first driving parameter and the first compensation value of the display device to obtain the display screen of the display device;
  • the display screen and the standard display screen of the display device are used to determine the abnormal display area of the display device; according to the abnormal display area of the display device, the first driving parameter and the first compensation of the abnormal display area of the display device are obtained. value to get the abnormal drive parameters.
  • the display device driver is further used to obtain the compensation accuracy of the display device; according to the abnormal driving parameters of the display device and the compensation accuracy, the second compensation value of the display device is determined .
  • the display device driver is further configured to determine a first reference compensation coefficient and a first reference compensation value of the display device according to an abnormal driving parameter of the display device; according to the first reference
  • the compensation coefficient and the coefficient compensation accuracy are used to determine the second reference compensation coefficient of the display device; the compensation accuracy includes the coefficient compensation accuracy; according to the first reference compensation value and the second reference compensation coefficient, the first reference compensation coefficient of the display device is determined. Two compensation values.
  • the display device driver is further configured to determine a first reference compensation coefficient and a first reference compensation value of the display device according to abnormal driving parameters of the display device;
  • the first reference compensation value and the voltage compensation accuracy determine the second reference compensation value of the display device;
  • the compensation accuracy includes the voltage compensation accuracy;
  • the display device is determined according to the second reference compensation value and the first reference compensation coefficient The second compensation value for the device.
  • the display device driver is further configured to determine a first reference compensation coefficient and a first reference compensation value of the display device according to an abnormal driving parameter of the display device; according to the first reference
  • the compensation coefficient, the first reference compensation value, and the compensation accuracy are used to determine the second reference compensation coefficient and the second reference compensation value of the display device; and the display device is determined according to the second reference compensation coefficient and the second reference compensation value.
  • the second compensation value for the device is further configured to determine a first reference compensation coefficient and a first reference compensation value of the display device according to an abnormal driving parameter of the display device; according to the first reference
  • the compensation coefficient, the first reference compensation value, and the compensation accuracy are used to determine the second reference compensation coefficient and the second reference compensation value of the display device; and the display device is determined according to the second reference compensation coefficient and the second reference compensation value.
  • the second compensation value for the device is further configured to determine a first reference compensation coefficient and a first reference compensation value of the display device according to an abnormal driving parameter of the display device; according to the first reference
  • An embodiment of the present application provides a display device, the display device is driven to modify the compensation value of the display panel when the compensation effect of the display panel is poor, and modify the first compensation value to the second compensation value.
  • the compensation value is smaller than the first compensation value, so that the display panel will not be over-compensated, the purple dots in the display panel will be eliminated, and the display panel will be prevented from displaying poor display.
  • the embodiments of the present application also provide a display device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the When the processor executes the program, the display device driving method is realized when the processor executes the program according to any one of the above.
  • FIG. 9 it is a schematic diagram of the hardware structure of an embodiment of the apparatus for executing the display device driving method provided by the present application.
  • the device includes one or more processors 601 and a memory 602 , and one processor 601 is taken as an example in FIG. 9 .
  • the apparatus for executing the display device driving method may further include: an input device 603 and an output device 604 .
  • the processor 601 , the memory 602 , the input device 603 and the output device 604 may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 9 .
  • the memory 602 can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as programs corresponding to the display device driving method in the embodiments of the present application Directive/Module.
  • the processor 601 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 602, ie, implements the display device driving method of the above method embodiments.
  • the memory 602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the Mura phenomenon compensation device, and the like. Additionally, memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 602 may optionally include memory located remotely relative to processor 601, and these remote memories may be connected to the member user behavior monitoring device via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the input device 603 can receive input numerical or character information, and generate key signal input related to user setting and function control of the Mura phenomenon compensation device.
  • the output device 604 may include a display device such as a display screen.
  • the one or more modules are stored in the memory 602, and when executed by the one or more processors 601, execute the driving method in any of the above method embodiments.
  • the technical effect of the embodiment of the apparatus for executing the driving method is the same as or similar to any of the foregoing method embodiments.
  • Embodiments of the present application provide a display device and a driving method thereof.
  • the display device driving method first obtains a first driving parameter and a first compensation value of the display device, and then, according to the first driving parameter and the first compensation value of the display device, Determine the abnormal driving parameter of the display device; then determine the second compensation value of the display device according to the abnormal driving parameter of the display device; then use the second compensation value and the first driving parameter to drive the display device.
  • the compensation effect of the display panel is poor, the compensation value of the display panel is modified, and the first compensation value is changed to the second compensation value. Since the second compensation value is smaller than the first compensation value, the display panel will not Overcompensation occurs, eliminating purple dots in the display panel and avoiding poor display on the display panel.

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Abstract

一种显示装置及其驱动方法、电子设备;该显示装置驱动方法通过先获取显示装置的第一驱动参数和第一补偿值(S1),然后根据显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数(S2);然后根据显示装置的异常驱动参数,确定显示装置的第二补偿值(S3);然后使用第二补偿值和第一驱动参数驱动显示装置(S4)。

Description

显示装置及其驱动方法、电子设备 技术领域
本申请涉及显示领域,尤其涉及一种显示装置及其驱动方法、电子设备。
背景技术
显示面板为了实现不同的显示亮度,需要对显示面板进行调光,现有显示面板的调光模式包括脉冲调制(Pulse width modulation,PWM)模式和直流(Direct Current,DC)调光模式,DC调光模式由于不会出现屏幕闪烁而被广泛应用。
对于当前的显示面板,由于制程稳定性的差异,显示面板部分区域的亮度无法达到理想状态,导致显示面板在显示过程中出现亮度不均匀(mura),因此需要对显示面板的亮度进行补偿,即将显示面板的亮度较高的位置的亮度降低,将显示面板的亮度较低的位置的亮度提高,实现显示面板的亮度均一性。但在显示面板的亮度补偿过程中,对显示面板亮度较高位置进行补偿时,由于绿色子像素的亮度占比较高,因此在补偿时绿色子像素的补偿值会先降到零,此时仍然会存在蓝色子像素的亮度值和红色子像素的亮度值,在显示时呈现紫点,导致显示面板出现显示不良。
所以,现有显示面板驱动过程中存在补偿效果较差,导致显示面板出现显示不良的问题。
技术问题
本申请实施例提供一种显示装置及其驱动方法、电子设备,用以缓解现有显示面板驱动过程中存在补偿效果较差的技术问题。
技术解决方案
本申请实施例提供一种显示装置驱动方法,该显示装置驱动方法包括:
获取显示装置的第一驱动参数和第一补偿值;
根据所述显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数;
根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值;所 述第一补偿值的绝对值大于所述第二补偿值的绝对值;
使用所述第二补偿值和第一驱动参数驱动所述显示装置。
在一些实施例中,所述获取显示装置的第一驱动参数和第一补偿值的步骤,包括:
获取显示装置的第一显示模式和第二显示模式的对应关系;
获取显示装置在第一显示模式的待显示灰阶和待显示亮度;
根据所述第一显示模式的待显示灰阶和待显示亮度,以及所述对应关系,确定显示装置的第一驱动参数和第一补偿值。
在一些实施例中,所述根据所述显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数的步骤,包括:
根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;
根据各像素的第二驱动参数和最小补偿值,确定所述显示装置的异常驱动参数。
在一些实施例中,所述根据各像素的第二驱动参数和最小补偿值,确定所述显示装置的异常驱动参数的步骤,包括:
根据各像素的第二驱动参数,确定各像素中子像素的子补偿值;
根据各子像素的子补偿值,以及最小补偿值,判断各子像素的子补偿值是否小于所述最小补偿值;
在所述子像素的子补偿值小于所述最小补偿值时,确定所述子像素对应的异常驱动参数。
在一些实施例中,所述根据所述显示装置的驱动参数和第一补偿值,确定显示装置的异常驱动参数的步骤,包括:
根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;
根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;
根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。
在一些实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
获取所述显示装置的补偿精度;
根据所述显示装置的异常驱动参数和所述补偿精度,确定所述显示装置的第二补偿值。
在一些实施例中,所述根据所述显示装置的异常驱动参数和所述补偿精度,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和系数补偿精度,确定所述显示装置的第二基准补偿系数;所述补偿精度包括系数补偿精度;
根据所述第一基准补偿值和第二基准补偿系数,确定所述显示装置的第二补偿值。
在一些实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述显示装置的第一基准补偿值和电压补偿精度,确定所述显示装置的第二基准补偿值;所述补偿精度包括电压补偿精度;
根据所述第二基准补偿值和第一基准补偿系数,确定所述显示装置的第二补偿值。
在一些实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和第一基准补偿值,以及补偿精度,确定所述显示装置的第二基准补偿系数和第二基准补偿值;
根据所述第二基准补偿系数和第二基准补偿值,确定所述显示装置的第二补偿值。
在一些实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤之后,还包括:
存储所述第二补偿值。
本申请还日出了一种显示装置,其包括显示装置驱动和显示面板,所述显示装置驱动包括:
获取模块,用于获取所述显示装置的第一驱动参数和第一补偿值;
第一确定模块,用于根据所述显示装置的第一驱动参数和第一补偿值,确定所述显示装置的异常驱动参数;
第二确定模块,用于根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值,所述第一补偿值的绝对值大于所述第二补偿值的绝对值;
存储模块,用于存储所述第二补偿值;
驱动模块,用于使用所述第二补偿值和所述第一驱动参数驱动所述显示装置。
在一些实施例中,所述显示装置驱动还用于:
获取所述显示装置的第一显示模式和第二显示模式的对应关系;
获取所述显示装置在第一显示模式的待显示灰阶和待显示亮度;
根据所述第一显示模式的待显示灰阶和待显示亮度,以及所述对应关系,确定所述显示装置的第一驱动参数和第一补偿值。
在一些实施例中,所述显示装置驱动还用于:
根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;
根据各像素的所述第二驱动参数和所述最小补偿值,确定所述显示装置的异常驱动参数。
在一些实施例中,所述显示装置驱动还用于:
根据各像素的所述第二驱动参数,确定各像素中子像素的子补偿值;
根据各子像素的所述子补偿值,以及所述最小补偿值,判断各子像素的所述子补偿值是否小于所述最小补偿值;
在所述子像素的所述子补偿值小于所述最小补偿值时,确定所述子像素对应的异常驱动参数。
在一些实施例中,所述显示装置驱动还用于:
根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;
根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;
根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。
在一些实施例中,所述显示装置驱动还用于:
获取所述显示装置的补偿精度;
根据所述显示装置的异常驱动参数和补偿精度,确定所述显示装置的第二补偿值。
在一些实施例中,所述显示装置驱动还用于:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和所述系数补偿精度,确定所述显示装置的第二基准补偿系数;
根据所述第一基准补偿值和所述第二基准补偿系数,确定所述显示装置的第二补偿值。
在一些实施例中,所述显示装置驱动还用于:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿值和所述电压补偿精度,确定所述显示装置的第二基准补偿值;
根据所述第二基准补偿值和所述第一基准补偿系数,确定所述显示装置的第二补偿值。
在一些实施例中,所述显示装置驱动还用于:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和所述第一基准补偿值,以及所述补偿精度, 确定所述显示装置的第二基准补偿系数和第二基准补偿值;
根据所述第二基准补偿系数和所述第二基准补偿值,确定所述显示装置的第二补偿值。
本申请还提出了一种电子设备,其包括存储器和处理器;所述存储器存储有计算机程序,所述处理器用于运行所述存储器内的计算机程序,以执行上述显示装置驱动方法中的操作。
有益效果
本申请提供一种显示装置及其驱动方法,该显示装置驱动方法通过先获取显示装置的第一驱动参数和第一补偿值,然后根据显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数;然后根据显示装置的异常驱动参数,确定显示装置的第二补偿值;然后使用第二补偿值和第一驱动参数驱动显示装置。本申请通过在显示面板出现补偿效果较差时,对显示面板的补偿值进行修改,将第一补偿值修改为第二补偿值,由于第二补偿值小于第一补偿值,使得显示面板不会出现过度补偿,消除显示面板中的紫点,避免显示面板出现显示不良。
附图说明
图1为现有显示装置的理论显示亮度曲线和实际显示亮度曲线的对比图。
图2为现有显示装置补偿前和补偿后的对比图。
图3为本申请实施例提供的显示装置驱动方法的流程图。
图4为本申请实施例提供的显示装置的补偿系数与补偿值的曲线图。
图5为本申请实施例提供的显示装置第一次补偿和第二次补偿的对比图。
图6为本申请实施例提供的显示装置的第一补偿值和第二补偿值的第一种对比图。
图7为本申请实施例提供的显示装置的第一补偿值和第二补偿值的第二种对比图。
图8为本申请实施例提供的显示装置的示意图。
图9为本申请实施例中的显示设备的一个实施例的硬件结构示意图。
本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确,以下参照附图并举实施例对本申请进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本申请,并不用于限定本申请。
现有显示面板中PWM模式和DC模式会采用一组伽马波段,因此DC模式的低亮度中灰阶的mura与PWM模式的高亮度低灰阶mura相同。例如,PWM模式的正常最大显示亮度为500nit(尼特),伽马曲线的计算公式为:
L/Lmax=(Gray/255)^2.2;
其中,L为亮度,Lmax为最大亮度,Gray为灰阶,则DC模式下2nit Gray64与PWM模式下500nit Gray5大致相等,即DC模式下2nit时64灰阶的mura与PWM模式的500nit时5灰阶的mura相同。
如图1所示,横坐标为灰阶,纵坐标为亮度,显示面板在各灰阶的理论显示亮度为曲线1,显示面板在各灰阶的实际显示亮度为曲线2,可以看到在DC模式下需要对显示面板进行补偿。现有显示面板的补偿过程是将亮度较高的位置的亮度降低,将显示面板的亮度较低的位置的亮度提高,以DC模式2nit Gray64为例,其对应的PWM模式为500nit Gray5,即DC模式最大可以下降的灰阶为5灰阶,在显示面板的亮度较高时,需要将显示面板的红色、绿色和蓝色的灰阶降低5个灰阶,而由于显示面板的绿色子像素的亮度占比较大,因此绿色子像素只需要降低3个灰阶即可,而此时红色子像素和蓝色子像素会多余两个灰阶进行显示,导致在显示时红色子像素和蓝色子像素合成为紫色,显示面板出现紫点。
如图2所示,显示面板包括正常显示区域11和过亮显示区域12,图2中的(a)为显示面板补偿前的显示效果图,图2中的(b)为显示面板补偿后的显示效果图,从图2中的(b)可以看出,在补偿后,过亮显示区域12的亮度降低,但过亮显示区域12出现紫点121,导致显示面板出现显示不良。
针对上述技术问题,本申请实施例提供一种显示装置及其驱动方法,用以缓解上述技术问题。
如图3所示,本申请实施例提供一种显示装置驱动方法,该显示装置驱动方法包括:
S1,获取显示装置的第一驱动参数和第一补偿值;
S2,根据所述显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数;
S3,根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值;所述第一补偿值的绝对值大于所述第二补偿值的绝对值;
S4,使用所述第二补偿值和第一驱动参数驱动所述显示装置。
本申请实施例提供一种显示面板驱动方法,该显示面板驱动方法通过在显示面板出现补偿效果较差时,对显示面板的补偿值进行修改,将第一补偿值修改为第二补偿值,由于第二补偿值小于第一补偿值,使得显示面板不会出现过度补偿,消除显示面板中的紫点,避免显示面板出现显示不良。
需要说明的是,第一驱动参数可以包括第一驱动电压,第一补偿值可以包括第一补偿电压和第一补偿灰阶,异常驱动参数可以包括异常驱动电压,第二补偿值可以包括第二补偿电压和第二补偿灰阶。
需要说明的是,由于在显示面板出现较暗的区域,对较暗的区域进行补偿不会出现紫点的问题,因此,在本申请实施例中,出现显示不良指的是对过亮区域进行补偿出现紫点的显示问题,异常驱动参数是指出现紫点时显示面板的电压。
针对显示面板会采用不同的显示模式,对不同的显示模式采用不同的驱动方法存在较为复杂的问题。在一种实施例中,所述获取显示装置的第一驱动参数和第一补偿值的步骤可以包括:
获取显示装置的第一显示模式和第二显示模式的对应关系;
获取显示装置在第一显示模式的待显示灰阶和待显示亮度;
根据所述第一显示模式的待显示灰阶和待显示亮度,以及第一显示模式和第二显示模式的对应关系,确定显示装置的第一驱动参数和第一补偿值。通过建立第一显示模式和第二显示模式的对应关系,使得在确定第一显示模式的待显示灰阶和待显示亮度后,能够确定显示面板的第一驱动参数和第一补偿值,使得显示面板能够根据显示模式进行显示,且不同显示模式的驱动参数和补偿值通过烧录至驱动芯片,相应的进行驱动使显示面板显示待显示画面。
在本申请实施例中,第一驱动参数为显示装置的实际驱动参数,通过第一补偿值对第一驱动参数进行补偿,则可以得到显示装置的理论驱动参数,从而 使得显示面板正常显示,但实际补偿中会出现紫点的问题,因此,将第一补偿值修改为第二补偿值,使得采用第一驱动参数和第二补偿值对显示装置进行驱动时可以对第一驱动参数进行补偿,且显示装置不会出现显示不良。
在一种实施例中,所述第一显示模式可以为DC模式,所述第二显示模式可以为PWM模式。
针对显示面板在补偿过程中,会存在过度补偿导致显示面板出现紫点,但无法准确找到出现紫点的区域的问题。在一种实施例中,所述根据所述显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数的步骤,包括:
根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;
根据各像素的第二驱动参数和最小补偿值,确定所述显示装置的异常驱动参数。
在一种实施例中,第二驱动参数为各个像素通过第一补偿值进行补偿后的驱动参数,最小补偿值为显示面板不出现紫点的补偿值。
本申请实施例通过在得到各像素的第二驱动参数和最小补偿值后,确定显示装置的异常驱动参数,则可以确定显示装置中出现紫点的区域,从而对出现紫点的区域进行处理,使得显示面板正常显示。
在一种实施例中,所述根据各像素的第二驱动参数和最小补偿值,确定所述显示装置的异常驱动参数的步骤,包括:
根据各像素的第二驱动参数,确定各像素中子像素的子补偿值;
根据各子像素的子补偿值,以及最小补偿值,判断各子像素的子补偿值是否小于所述最小补偿值;
在所述子像素的子补偿值小于所述最小补偿值时,确定所述子像素对应的异常驱动参数。即在得到各像素的第二驱动参数后,确定各子像素的子补偿值,然后通过比较子像素的子补偿值和最小补偿值,则可以判断是否出现异常驱动参数。例如,绿色子像素的最小补偿值为-8个灰阶,而此时绿色子像素的子补偿值为-9个灰阶,则可以判断此时出现异常驱动参数,且可以根据子像素的子 补偿值确定对应的异常驱动参数,相应的进行处理。
需要说明的是,子补偿值包括子补偿电压和子补偿灰阶,最小补偿值包括最小补偿电压和最小补偿灰阶。
具体的,考虑到在显示面板出现显示异常时,绿色子像素的补偿量会先降到0,则可以比较绿色子像素的子补偿值和最小补偿值,从而确定显示面板的异常驱动参数。
具体的,考虑到显示面板出现显示异常时,像素的第一补偿值会超出最小补偿值,则可以根据像素的第一补偿值和最小补偿值确定显示面板的异常驱动参数。
在一种实施例中,在确定显示面板的最小补偿值时,可以根据各子像素的子补偿值进行判断,例如在某一亮度和灰阶,显示面板的绿色子像素的灰阶会降到0,则此时必然出现紫点,则可以将该亮度和灰阶对应的补偿值作为最小补偿值,进而根据像素的第一补偿值或者子像素的子补偿值,以及最小补偿值,确定异常驱动参数。
针对显示面板补偿时,无法准确找到出现异常显示的问题。在一种实施例中,所述根据所述显示装置的驱动参数和第一补偿值,确定显示装置的异常驱动参数的步骤,包括:
根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;
根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;
根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。通过在显示装置进行显示时,对显示装置进行驱动以观测到显示装置的显示效果,从而根据显示装置的显示效果确定显示装置的异常显示区域,相应的可以确定异常显示区域对应的异常驱动参数。
在一种实施例中,在通过显示装置的显示画面和标准显示画面确定显示装置的异常显示区域时,可以是在显示装置的显示画面中出现紫点即可将该区域作为异常显示区域。还可以是通过显示画面与标准显示画面的对比,将两个显 示画面的不同区域作为异常显示区域,则可以确定异常驱动参数。且在两个显示画面的对比过程中,可以通过图像识别装置进行比对,避免人员的观测出现错误。
针对显示面板补偿后出现显示不良的问题。在一种实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
获取所述显示装置的补偿精度;
根据所述显示装置的异常驱动参数和所述补偿精度,确定所述显示装置的第二补偿值。通过获取显示装置的补偿精度,则可以在显示装置出现异常显示时,通过补偿精度和异常驱动参数调整显示装置的补偿值,使得第二补偿值和第一驱动参数对显示装置进行驱动时,显示装置不会出现显示异常。
在一种实施例中,所述显示装置的补偿精度为0.5个灰阶,则可以根据灰阶与电压的对应关系确定显示装置的补偿值的精度,然后根据显示装置的补偿值的精度,对异常驱动参数进行修改,得到正常显示时的驱动参数。
上述实施例为对显示装置的异常驱动参数进行修改的描述,在一种实施例中,还可以对第一补偿值进行修改,得到第二补偿值;根据异常驱动参数得到第一补偿值,然后根据第一补偿值和补偿精度,得到第二补偿值。例如电压的补偿精度为0.5个灰阶,第一补偿值为-8个灰阶,则第二补偿值可以为-7.5个灰阶,从而使得在对显示装置进行补偿时,避免出现异常显示。
针对显示面板补偿后出现显示不良的问题。在一种实施例中,所述根据所述显示装置的异常驱动参数和所述补偿精度,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和系统补偿精度,确定所述显示装置的第二基准补偿系数;所述补偿精度包括系数补偿精度;
根据所述第一基准补偿值和第二基准补偿系数,确定所述显示装置的第二补偿值。在得到显示装置的异常驱动参数后,考虑到显示装置的第一补偿值由第一基准补偿系数和第一基准补偿值确定,则在显示装置出现显示异常时,根 据显示装置的第一基准补偿系数和系数补偿精度确定显示装置的第二基准补偿系数,从而可以使得由第二基准补偿系数和第一基准补偿值确定的显示装置的第二补偿值的绝对值小于第一补偿值的绝对值,则显示装置在显示时,不会出现显示异常。
在本申请实施例中,第一基准补偿系数为显示装置的第一补偿值对应的补偿系数,所述第一基准补偿值为第一补偿值对应的基准补偿值,第一补偿值由第一基准补偿系数和第一基准补偿值决定。
在本申请实施例中,系数补偿精度为第一基准补偿系数的补偿精度,该精度可以为0.01、0.1,本申请实施例不限于此,根据需求设定补偿精度。
在本申请实施例中,电压补偿精度为第一基准补偿值的补偿精度,该精度为对显示装置的显示画面产生影响的精度,例如在电压变化0.1V时显示装置的显示画面存在明显差异,则电压补偿精度为0.1V,本申请实施例不限于此,根据实际驱动参数设定。
上述实施例为通过对显示装置的第一基准补偿系数进行调整,以避免显示装置出现显示异常进行详细描述。考虑到第一基准补偿系数的调整会导致所有的区域的补偿值变更,而在避免显示装置出现显示不良时,仅需要对出现显示不良的区域的驱动参数进行修改。因此,在一种实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述显示装置的第一基准补偿值和电压补偿精度,确定所述显示装置的第二基准补偿值;所述补偿精度包括电压补偿精度;
根据所述第二基准补偿值和第一基准补偿系数,确定所述显示装置的第二补偿值。通过对显示装置的第一基准补偿值进行修改,使得在出现显示异常的区域的第一基准补偿值变为第二基准补偿值,则可以将第一补偿值修改为第二补偿值,相应的由于第二补偿值的绝对值小于第一补偿值的绝对值,使得在补偿时绿色子像素的补偿值不会变为0,从而避免显示装置出现紫点,且对第一基准补偿值的修改可以精确到每一个子像素,从而避免对显示异常区域的补偿导致其他区域出现显示不良。
在一种实施例中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
根据所述第一基准补偿系数和第一基准补偿值,以及补偿精度,确定所述显示装置的第二基准补偿系数和第二基准补偿值;
根据所述第二基准补偿系数和第二基准补偿值,确定所述显示装置的第二补偿值。在对显示装置的第一补偿值进行调整,以使显示装置通过第二补偿值进行补偿时能够正常显示时,可以根据需求对显示装置的第一基准补偿系数和第一基准补偿值同时进行修改,以在对显示装置的较亮区域进行补偿的同时,避免显示装置出现紫点。
在本申请实施例中,第二基准补偿系数为显示装置的第二补偿值对应的补偿系数,所述第二基准补偿值为第二补偿值对应的基准补偿值,第二补偿值由第二基准补偿系数和第二基准补偿值决定。
在一种实施例中,补偿值=基准补偿值*补偿系数,以DC模式2nit Gray64为例,其对应PWM模式为500nit Gray5,根据对显示装置的测试可以得到显示装置的正常显示区域和异常显示区域的曲线图如图4所示,曲线1为PWM模式500nit Gray5的理论曲线,曲线2为PWM模式500nit Gray5的实际曲线,曲线3为DC模式2nit Gray64的实际曲线,区域21为正常显示区域,区域22为出现紫点的区域,并得到出现紫点时补偿系数和补偿值的临界值,不同补偿系数下出现紫点的补偿值如下表:
表1不同补偿系数下出现紫点的补偿值
Figure PCTCN2021091353-appb-000001
Figure PCTCN2021091353-appb-000002
Figure PCTCN2021091353-appb-000003
根据图4和表1可以知道,在显示装置的补偿值超出临界值时,显示装置会出现紫点,例如,补偿系数为34时,补偿值为-8个灰阶,此时显示装置会出现紫点,则可以将显示装置的补偿值设定为-7.5个灰阶,相应的确定显示装置的第二补偿值,从而使得显示装置能够消除显示不均的同时,避免显示装置出现紫点。
如图5所示,图5中的(a)是通过第一补偿值进行补偿后显示装置的显示效果,图5中的(b)为通过第二补偿值进行补偿后显示装置的显示效果,显示装置包括第一显示区域31和第二显示区域32,在对第二显示区域32进行补偿后,第二显示区域32不出现紫点,显示面板能够正常显示。
如图6所示,横坐标为像素,纵坐标为补偿值,曲线1为各像素对应的第一补偿值的曲线,曲线2为各像素对应的第二补偿值的曲线,从图6可以看出,若曲线1和曲线2的整体趋势大致相同,则表示该曲线未采用本申请的驱动方法。
如图7所示,横坐标为像素,纵坐标为补偿值,曲线1为各像素对应的第一补偿值的曲线,曲线2为各像素对应的第二补偿值的曲线,从图7可以看出,在部分区域(即出现紫点的区域),第一补偿值与第二补偿值的大小相差较大,即通过采用第二补偿值对显示装置进行补偿,可以避免显示面板出现紫点。
如图8所示,本申请实施例提供一种显示装置,该显示装置包括显示装置驱动和显示面板,所述显示装置驱动包括:
获取模块401,用于获取显示装置的第一驱动参数和第一补偿值;
第一确定模块402,用于根据所述显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数;
第二确定模块403,用于根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值;所述第一补偿值的绝对值大于所述第二补偿值的绝对值;
存储模块404,用于存储所述第二补偿值;
驱动模块405,用于使用所述第二补偿值和第一驱动参数驱动所述显示装置。
在本申请的显示装置中,所述显示装置驱动还用于获取显示装置的第一显示模式和第二显示模式的对应关系;获取显示装置在第一显示模式的待显示灰阶和待显示亮度;根据所述第一显示模式的待显示灰阶和待显示亮度,以及第一显示模式和第二显示模式的对应关系,确定显示装置的第一驱动参数和第一补偿值。
在本申请的显示装置中,所述显示装置驱动还用于根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;根据各像素的第二驱动参数和最小补偿值,确定所述显示装置的异常驱动参数。
在本申请的显示装置中,所述显示装置驱动还用于根据各像素的第二驱动参数,确定各像素中子像素的子补偿值;根据各子像素的子补偿值,以及最小补偿值,判断各子像素的子补偿值是否小于所述最小补偿值;在所述子像素的子补偿值小于所述最小补偿值时,确定所述显示装置的异常驱动参数。
在本申请的显示装置中,所述显示装置驱动还用于根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。
在本申请的显示装置中,所述显示装置驱动还用于获取所述显示装置的补偿精度;根据所述显示装置的异常驱动参数和所述补偿精度,确定所述显示装置的第二补偿值。
在本申请的显示装置中,所述显示装置驱动还用于根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;根据所述第一基准补偿系数和系数补偿精度,确定所述显示装置的第二基准补偿系数;所述补偿精度包括系数补偿精度;根据所述第一基准补偿值和第二基准补偿系数,确定所述显示装置的第二补偿值。
在本申请的显示装置中,所述显示装置驱动还用于根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;根据所述显示装置的第一基准补偿值和电压补偿精度,确定所述显示装置的第二基准补偿值;所述补偿精度包括电压补偿精度;根据所述第二基准补偿值和第一 基准补偿系数,确定所述显示装置的第二补偿值。
在本申请的显示装置中,所述显示装置驱动还用于根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;根据所述第一基准补偿系数和第一基准补偿值,以及补偿精度,确定所述显示装置的第二基准补偿系数和第二基准补偿值;根据所述第二基准补偿系数和第二基准补偿值,确定所述显示装置的第二补偿值。
本申请实施例提供一种显示装置,该显示装置驱动用于在显示面板出现补偿效果较差时,对显示面板的补偿值进行修改,将第一补偿值修改为第二补偿值,由于第二补偿值小于第一补偿值,使得显示面板不会出现过度补偿,消除显示面板中的紫点,避免显示面板出现显示不良。
除了上述介绍用于显示装置及其驱动方法之外,本申请实施例还提供一种显示设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其中,所述处理器执行所述程序时实现如上述任意一项所述处理器执行所述程序时实现所述显示装置驱动方法。如图9所示,为本申请提供的执行所述显示装置驱动方法的设备的一个实施例的硬件结构示意图。
如图9所示,所述设备包括一个或多个处理器601以及存储器602,图9中以一个处理器601为例。
执行所述显示装置驱动方法的设备还可以包括:输入装置603和输出装置604。处理器601、存储器602、输入装置603和输出装置604可以通过总线或者其他方式连接,图9中以通过总线连接为例。
存储器602作为一种非易失性计算机可读存储介质,可用于存储非易失性软件程序、非易失性计算机可执行程序以及模块,如本申请实施例中的显示装置驱动方法对应的程序指令/模块。处理器601通过运行存储在存储器602中的非易失性软件程序、指令以及模块,从而执行服务器的各种功能应用以及数据处理,即实现上述方法实施例的显示装置驱动方法。
存储器602可以包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需要的应用程序;存储数据区可存储根据Mura现象补偿装置的使用所创建的数据等。此外,存储器602可以包括高速随机存取 存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实施例中,存储器602可选包括相对于处理器601远程设置的存储器,这些远程存储器可以通过网络连接至会员用户行为监控装置。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
输入装置603可接收输入的数字或字符信息,以及产生与Mura现象补偿装置的用户设置以及功能控制有关的键信号输入。输出装置604可包括显示屏等显示设备。
所述一个或者多个模块存储在所述存储器602中,当被所述一个或者多个处理器601执行时,执行上述任意方法实施例中的驱动方法。执行所述驱动方法的装置的实施例,其技术效果与前述任意方法实施例相同或者类似。
根据以上实施例可知:
本申请实施例提供一种显示装置及其驱动方法,该显示装置驱动方法通过先获取显示装置的第一驱动参数和第一补偿值,然后根据显示装置的第一驱动参数和第一补偿值,确定显示装置的异常驱动参数;然后根据显示装置的异常驱动参数,确定显示装置的第二补偿值;然后使用第二补偿值和第一驱动参数驱动显示装置。本申请通过在显示面板出现补偿效果较差时,对显示面板的补偿值进行修改,将第一补偿值修改为第二补偿值,由于第二补偿值小于第一补偿值,使得显示面板不会出现过度补偿,消除显示面板中的紫点,避免显示面板出现显示不良。
可以理解的是,对本领域普通技术人员来说,可以根据本申请的技术方案及其发明构思加以等同替换或改变,而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示装置驱动方法,其中,包括:
    获取显示装置的第一驱动参数和第一补偿值;
    根据所述显示装置的第一驱动参数和第一补偿值,确定所述显示装置的异常驱动参数;
    根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值;所述第一补偿值的绝对值大于所述第二补偿值的绝对值;
    使用所述第二补偿值和所述第一驱动参数驱动所述显示装置。
  2. 如权利要求1所述的显示装置驱动方法,其中,所述获取显示装置的第一驱动参数和第一补偿值的步骤,包括:
    获取所述显示装置的第一显示模式和第二显示模式的对应关系;
    获取所述显示装置在第一显示模式的待显示灰阶和待显示亮度;
    根据所述第一显示模式的待显示灰阶和待显示亮度,以及所述对应关系,确定所述显示装置的第一驱动参数和第一补偿值。
  3. 如权利要求2所述的显示装置驱动方法,其中,所述根据所述显示装置的第一驱动参数和第一补偿值,确定所述显示装置的异常驱动参数的步骤,包括:
    根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;
    根据各像素的所述第二驱动参数和所述最小补偿值,确定所述显示装置的异常驱动参数。
  4. 如权利要求3所述的显示装置驱动方法,其中,所述根据各像素的所述第二驱动参数和所述最小补偿值,确定所述显示装置的异常驱动参数的步骤,包括:
    根据各像素的所述第二驱动参数,确定各像素中子像素的子补偿值;
    根据各子像素的所述子补偿值,以及所述最小补偿值,判断各子像素的所述子补偿值是否小于所述最小补偿值;
    在所述子像素的所述子补偿值小于所述最小补偿值时,确定所述子像素对应的异常驱动参数。
  5. 如权利要求2所述的显示装置驱动方法,其中,所述根据所述显示装置的第一驱动参数和第一补偿值,确定所述显示装置的异常驱动参数的步骤,包括:
    根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;
    根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;
    根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。
  6. 如权利要求5所述的显示装置驱动方法,其中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
    获取所述显示装置的补偿精度;
    根据所述显示装置的异常驱动参数和补偿精度,确定所述显示装置的第二补偿值。
  7. 如权利要求6所述的显示装置驱动方法,其中,所述补偿精度包括系数补偿精度,所述根据所述显示装置的异常驱动参数和补偿精度,确定所述显示装置的第二补偿值的步骤,包括:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿系数和所述系数补偿精度,确定所述显示装置的第二基准补偿系数;
    根据所述第一基准补偿值和所述第二基准补偿系数,确定所述显示装置的第二补偿值。
  8. 如权利要求6所述的显示装置驱动方法,其中,所述补偿精度包括电压补偿精度,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿值和所述电压补偿精度,确定所述显示装置的第二 基准补偿值;
    根据所述第二基准补偿值和所述第一基准补偿系数,确定所述显示装置的第二补偿值。
  9. 如权利要求6所述的显示装置驱动方法,其中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤,包括:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿系数和所述第一基准补偿值,以及所述补偿精度,确定所述显示装置的第二基准补偿系数和第二基准补偿值;
    根据所述第二基准补偿系数和所述第二基准补偿值,确定所述显示装置的第二补偿值。
  10. 如权利要求1所述的显示装置驱动方法,其中,所述根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值的步骤之后,还包括:
    存储所述第二补偿值。
  11. 一种显示装置,其包括显示装置驱动和显示面板,所述显示装置驱动包括:
    获取模块,用于获取所述显示装置的第一驱动参数和第一补偿值;
    第一确定模块,用于根据所述显示装置的第一驱动参数和第一补偿值,确定所述显示装置的异常驱动参数;
    第二确定模块,用于根据所述显示装置的异常驱动参数,确定所述显示装置的第二补偿值,所述第一补偿值的绝对值大于所述第二补偿值的绝对值;
    存储模块,用于存储所述第二补偿值;
    驱动模块,用于使用所述第二补偿值和所述第一驱动参数驱动所述显示装置。
  12. 如权利要求11所述的显示装置,其中,所述显示装置驱动还用于:
    获取所述显示装置的第一显示模式和第二显示模式的对应关系;
    获取所述显示装置在第一显示模式的待显示灰阶和待显示亮度;
    根据所述第一显示模式的待显示灰阶和待显示亮度,以及所述对应关系,确定所述显示装置的第一驱动参数和第一补偿值。
  13. 如权利要求12所述的显示装置,其中,所述显示装置驱动还用于:
    根据所述显示装置的第一驱动参数和第一补偿值,确定各像素的第二驱动参数和最小补偿值;
    根据各像素的所述第二驱动参数和所述最小补偿值,确定所述显示装置的异常驱动参数。
  14. 如权利要求13所述的显示装置,其中,所述显示装置驱动还用于:
    根据各像素的所述第二驱动参数,确定各像素中子像素的子补偿值;
    根据各子像素的所述子补偿值,以及所述最小补偿值,判断各子像素的所述子补偿值是否小于所述最小补偿值;
    在所述子像素的所述子补偿值小于所述最小补偿值时,确定所述子像素对应的异常驱动参数。
  15. 如权利要求12所述的显示装置,其中,所述显示装置驱动还用于:
    根据所述显示装置的第一驱动参数和第一补偿值,对所述显示装置进行驱动,得到所述显示装置的显示画面;
    根据所述显示装置的显示画面和标准显示画面,确定所述显示装置的异常显示区域;
    根据所述显示装置的异常显示区域,获取所述显示装置的异常显示区域的第一驱动参数和第一补偿值,得到异常驱动参数。
  16. 如权利要求15所述的显示装置,其中,所述显示装置驱动还用于:
    获取所述显示装置的补偿精度;
    根据所述显示装置的异常驱动参数和补偿精度,确定所述显示装置的第二补偿值。
  17. 如权利要求16所述的显示装置,其中,所述显示装置驱动还用于:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿系数和所述系数补偿精度,确定所述显示装置的第二基准补偿系数;
    根据所述第一基准补偿值和所述第二基准补偿系数,确定所述显示装置的第二补偿值。
  18. 如权利要求16所述的显示装置,其中,所述显示装置驱动还用于:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿值和所述电压补偿精度,确定所述显示装置的第二基准补偿值;
    根据所述第二基准补偿值和所述第一基准补偿系数,确定所述显示装置的第二补偿值。
  19. 如权利要求16所述的显示装置,其中,所述显示装置驱动还用于:
    根据所述显示装置的异常驱动参数,确定所述显示装置的第一基准补偿系数和第一基准补偿值;
    根据所述第一基准补偿系数和所述第一基准补偿值,以及所述补偿精度,确定所述显示装置的第二基准补偿系数和第二基准补偿值;
    根据所述第二基准补偿系数和所述第二基准补偿值,确定所述显示装置的第二补偿值。
  20. 一种电子设备,其包括存储器和处理器;所述存储器存储有计算机程序,所述处理器用于运行所述存储器内的计算机程序,以执行权利要求1所述的显示装置驱动方法中的操作。
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