WO2022007080A1 - 白平衡调整方法及其装置、电子设备 - Google Patents

白平衡调整方法及其装置、电子设备 Download PDF

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Publication number
WO2022007080A1
WO2022007080A1 PCT/CN2020/106851 CN2020106851W WO2022007080A1 WO 2022007080 A1 WO2022007080 A1 WO 2022007080A1 CN 2020106851 W CN2020106851 W CN 2020106851W WO 2022007080 A1 WO2022007080 A1 WO 2022007080A1
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sub
pixel
panel
tested
target brightness
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PCT/CN2020/106851
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English (en)
French (fr)
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海博
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深圳市华星光电半导体显示技术有限公司
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Priority to US17/253,450 priority Critical patent/US11735130B2/en
Publication of WO2022007080A1 publication Critical patent/WO2022007080A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/34—Control 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 by control of light from an independent source
    • G09G3/36—Control 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 by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/34—Control 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 by control of light from an independent source
    • G09G3/36—Control 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 by control of light from an independent source using liquid crystals
    • G09G3/3607—Control 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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present application relates to the field of display, and in particular, to a white balance adjustment method and device thereof, and electronic equipment.
  • the white balance grayscale color performance will have a considerable degree of color shift difference.
  • the existing display when the RGB sub-pixels are displayed individually, the low voltage corresponding to the two sub-pixels in the low gray-scale state will affect the high voltage of the sub-pixel in the high gray-scale state, resulting in RGB monochrome.
  • the brightness will decrease; when W is displayed, RGB is fully bright, that is, the three sub-pixels of RGB correspond to high voltages, and the influence of the three sub-pixels of RGB on the brightness is small, that is, the brightness of W is high. Therefore, in the existing display, when the WRGB is in any gray scale, the brightness of W and the sum of the brightness of the three sub-pixels of RGB are not equal, which affects the display quality of the display.
  • the present application provides a white balance adjustment method, device, and electronic device to solve the technical problem of low display quality of existing displays.
  • This application proposes a white balance adjustment method, which includes:
  • the gray-scale voltage corresponding to each sub-pixel of the panel to be tested is acquired.
  • the step of acquiring the first image parameter of the panel to be tested includes:
  • the step of acquiring the white balance compensation coefficient of the panel to be tested according to the first image parameter of the panel to be tested includes:
  • n is an integer from 0 to M.
  • the step of setting the gamma value of the panel to be tested to a first threshold to obtain the first target brightness of the panel to be tested includes:
  • the first target brightness is normalized to obtain the first normalized target brightness of the panel to be tested.
  • the step of obtaining the second target brightness of the panel to be tested according to the white balance compensation coefficient of the panel to be tested and the first target brightness includes:
  • the second normalized target brightness of the panel to be tested is acquired according to the ratio of the first normalized target brightness of the panel to be tested to the white balance compensation coefficient of the panel to be tested.
  • the method for adjusting the white balance before the step of acquiring the grayscale voltage corresponding to each sub-pixel of the panel under test according to the second target brightness of the panel under test, the method for adjusting the white balance further includes: :
  • the first image parameters of the panel to be tested are converted from a low bit depth to a high bit depth by using a first function to obtain second image parameters of the panel to be tested.
  • the step of acquiring the grayscale voltage corresponding to each sub-pixel of the panel to be tested according to the second target brightness of the panel to be tested includes:
  • the second normalized target brightness of the panel to be tested obtain the brightness value corresponding to each gray scale of the first sub-pixel in the RGB sub-pixel;
  • the luminance value corresponding to each gray level of the first sub-pixel and the second image parameter of the panel under test obtain the luminance value corresponding to each gray level of the second sub-pixel and the third sub-pixel;
  • the gray-scale values of the first sub-pixel, the second sub-pixel and the third sub-pixel are obtained.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are different from each other among the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the present application also proposes a white balance adjustment device, which includes an acquisition module, a compensation module, a first target brightness calculation module, a second target brightness calculation module, and an adjustment module;
  • the acquisition module is used to acquire the first image parameter of the panel to be tested
  • the compensation module is configured to obtain the white balance compensation coefficient of the panel to be tested according to the first image parameter of the panel to be tested;
  • the first target brightness calculation module is configured to set the gamma value of the panel to be tested to a first threshold to obtain the first target brightness of the panel to be tested;
  • the second target brightness calculation module is configured to obtain the second target brightness of the panel to be tested according to the white balance compensation coefficient of the panel to be tested and the first target brightness;
  • the adjustment module is configured to acquire the grayscale voltage corresponding to each sub-pixel of the panel to be tested according to the second target brightness of the panel to be tested.
  • the compensation module includes a first acquisition unit, a second acquisition unit, a dark state brightness calculation unit, and a compensation unit;
  • the first acquisition unit luminance B sub-pixels for obtaining the luminance of the R sub-pixel in the first test panel grayscale value L M R (M), the luminance value L G sub-pixel G (M) the value L B (M), and the luminance value L W (M) of the W sub-pixel;
  • the second obtaining unit is used to obtain the luminance value L R (n) of the R sub-pixel, the luminance value L G (n) of the G sub-pixel, and the luminance of the B sub-pixel of the panel to be tested at the nth gray scale. the value L B (n), and the luminance value L W (n) of the W sub-pixel;
  • the dark state brightness calculation unit is used to obtain the brightness L P of one pixel when the panel to be tested is in a dark state
  • n is an integer from 0 to M.
  • the first target brightness calculation module includes a first target brightness calculation unit and a first normalization unit;
  • the first target brightness calculation unit is configured to set the gamma value of the panel to be tested to a first threshold to obtain the first target brightness of the panel to be tested;
  • the first normalization unit is configured to perform normalization processing on the first target brightness to obtain the first normalized target brightness of the panel to be tested.
  • the second target brightness calculation module is configured to obtain the ratio of the first normalized target brightness of the panel to be tested to the white balance compensation coefficient of the panel to be tested to obtain The second normalized target brightness of the panel to be tested.
  • the acquisition module is configured to scan the panel to be tested, and acquire the luminance values L R (i), G sub-pixels of the R sub-pixels of the panel to be tested at the i-th grayscale The luminance value L G (i) of the pixel, the luminance value L B (i) of the B sub-pixel, and the luminance value L W (i) of the W sub-pixel.
  • the white balance adjustment device further includes a bit depth conversion module
  • the depth conversion module converts the first image parameter of the panel to be tested from a low bit depth to a high bit depth by using a first function to obtain a second image parameter of the panel to be tested.
  • the adjustment module includes a first calculation unit, a second calculation unit and a third calculation unit;
  • the first calculation unit is configured to obtain the brightness value corresponding to each gray scale of the first sub-pixel in the RGB sub-pixels according to the second normalized target brightness of the panel to be tested;
  • the second calculation unit is used to obtain the luminance values of the second sub-pixel and the third sub-pixel in each gray level according to the luminance value corresponding to each gray level of the first sub-pixel and the second image parameter of the panel to be tested.
  • the third calculation unit is configured to obtain the first sub-pixel, the second sub-pixel and the corresponding luminance values of the first sub-pixel, the second sub-pixel and the third sub-pixel at each gray scale. the gray-scale voltage corresponding to the third sub-pixel at each gray-scale;
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are different from each other among the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the present application also proposes an electronic device, which includes a memory and a processor;
  • a computer program is stored in the memory, and the processor is configured to execute the computer program to implement a white balance adjustment method, which includes:
  • the gray-scale voltage corresponding to each sub-pixel of the panel to be tested is acquired.
  • the step of acquiring the first image parameter of the panel to be tested includes:
  • the step of acquiring the white balance compensation coefficient of the panel to be tested according to the first image parameter of the panel to be tested includes:
  • n is an integer from 0 to M.
  • the step of setting the gamma value of the panel to be tested to a first threshold to obtain the first target brightness of the panel to be tested includes:
  • the first target brightness is normalized to obtain the first normalized target brightness of the panel to be tested.
  • the white balance adjustment method before the step of acquiring the grayscale voltage corresponding to each sub-pixel of the panel to be tested according to the second target brightness of the panel to be tested, the white balance adjustment method further includes:
  • the first image parameters of the panel to be tested are converted from a low bit depth to a high bit depth by using a first function to obtain second image parameters of the panel to be tested.
  • the step of acquiring the gray-scale voltage corresponding to each sub-pixel of the panel to be tested includes:
  • the second normalized target brightness of the panel to be tested obtain the brightness value corresponding to each gray scale of the first sub-pixel in the RGB sub-pixel;
  • the luminance value corresponding to each gray level of the first sub-pixel and the second image parameter of the panel under test obtain the luminance value corresponding to each gray level of the second sub-pixel and the third sub-pixel;
  • the gray-scale values of the first sub-pixel, the second sub-pixel and the third sub-pixel are obtained.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are different from each other among the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the present application obtains the white balance compensation coefficient of the panel to be tested by processing the original image parameters, and the target brightness and the white balance compensation coefficient obtained according to the predetermined gamma value to obtain the desired value of the panel to be tested.
  • the target brightness eliminates the influence of the low voltage corresponding to the dark state subpixel on the high voltage corresponding to the bright state subpixel when the RGB subpixels are displayed alone, thereby improving the display quality of the display.
  • Fig. 1 is the step diagram of the white balance adjustment method of the present application
  • Fig. 2 is the ratio curve diagram of (R+G+B) and W of each gray scale in the white balance adjustment method of the present application;
  • FIG. 5 is a third structural diagram of the white balance adjustment device of the present application.
  • the present application proposes a white balance adjustment method and device.
  • the white balance adjustment method includes:
  • the first image parameter of the panel to be tested may be acquired by a scanning device, a reading device, etc., which is not specifically limited in this application.
  • This step is mainly used to obtain the luminance corresponding to each sub-pixel of the panel under test at any gray scale, for example, the luminance value L R (i) of the sub-pixel R of the panel to be tested at the ith gray scale, and the sub-pixel of G
  • the luminance value L G (i) of the pixel, the luminance value L B (i) of the B sub-pixel, and the luminance value L W (i) of the W sub-pixel is mainly used to obtain the luminance corresponding to each sub-pixel of the panel under test at any gray scale, for example, the luminance value L R (i) of the sub-pixel R of the panel to be tested at the ith gray scale, and the sub-pixel of G
  • L G (i) of the pixel the luminance value L B (i) of the B sub-pixel
  • L W (i) of the W sub-pixel the luminance value L W (i) of the W sub-pixel.
  • i is an integer from 0 to M, and M may be 2 8 -1, 2 10 -1, etc., which is not specifically limited here.
  • an 8-bit display panel to be tested includes 256 grayscale data.
  • the red sub-pixel it includes a total of 256 grayscale data from 0 to 255, and any grayscale corresponds to a luminance value.
  • the green sub-pixel the blue sub-pixel and the white sub-pixel, each corresponds to 256 gray-scale data. Therefore, for the 8-bit display panel to be tested, 1024 gray-scale data are obtained through the corresponding device in this step.
  • step S20 may include:
  • this step can easily obtain the luminance value corresponding to any gray scale of any sub-pixel of the panel to be tested.
  • step S201 taking 8 bits as an example, the value of M is 255.
  • the step S201 is used to acquire the luminance of the R sub-pixel in the first test panel 255 gray values L R (255), the luminance value L G sub-pixel G (255), the luminance values of the B subpixels L B (255), and the luminance value of the W sub-pixel L W (255).
  • step S203 for the LCD display panel, when the sub-pixels of the display panel are in a dark state, since the backlight is in a normally bright state, it has a certain degree of light transmittance, so that when a single pixel of the panel to be tested is displayed, for example, a red sub-pixel During display, the green and blue sub-pixels are in a dark state, but because the panel has a certain light transmittance, the gray-scale brightness corresponding to the green sub-pixel needs to be subtracted from the brightness values of the green and blue sub-pixels when the green and blue sub-pixels are in the dark state.
  • step L R (n) S202 + L R (n) + value of L R (n) should be subtracted emission luminance six subpixels in the dark state, while the three sub-pixels of a pixel is equal to the dark state luminance dark state brightness. Therefore, in step S204, the value of (L R (n)+L R (n)+L R (n)-2L P )/L W (n) is the nth gray-scale monochrome sub-pixel of the panel to be tested The ratio of the sum of the brightness in the bright state to the brightness of the white sub-pixels when the three sub-pixels are in the bright state. Please refer to Figure 2 for the specific ratio. In Figure 2, the X direction is the grayscale value, and the Y direction is (R+G+ B) Ratio to W.
  • n is an integer from 0 to M.
  • step S30 may specifically include:
  • step S301 it is mainly used to obtain the target brightness curve that the panel to be tested needs to achieve.
  • This step mainly introduces the concept of gamma value in the display field.
  • the gamma value is a graph of gray scale and brightness in the display panel, and different gamma values correspond to different graphs.
  • L is the brightness
  • n is the grayscale value
  • ⁇ is the gamma value
  • this embodiment can acquire the brightness value corresponding to any gray scale of the panel to be tested, that is, the first target brightness.
  • the first threshold may be any value, which is not specifically limited here.
  • the first threshold is 2.2.
  • the white balance compensation coefficient of the panel to be tested in step S20 and the first normalized target brightness of the panel to be tested in step S30 are first acquired. Secondly, according to the ratio of the first normalized target luminance of the panel to be tested to the white balance compensation coefficient of the panel to be tested, to obtain the second normalized target luminance of the panel to be tested.
  • the second normalized target brightness is the final brightness to be achieved by the panel under test after compensation.
  • the white balance adjustment method should further include the steps:
  • the first image parameters of the panel to be tested are converted from a low bit depth to a high bit depth by using a first function to obtain second image parameters of the panel to be tested.
  • the data of the aforementioned image parameters is 8 bits, and this step mainly converts the 8 bits to a higher bit depth.
  • the first image parameter of the panel to be tested is converted from 8 bits to 10 bits by using the first function, so as to obtain the second image parameter of the panel to be tested.
  • the difference between the numerical values of the high bit depth and the low bit depth is not less than 2.
  • the 8-bit first image parameter it includes a total of 256 gray-scale data from 0 to 255, while the 10-bit image parameter includes a total of 1024 gray-scale data from 0 to 1023.
  • This embodiment may, but is not limited to, convert the first image parameter from 8bit to 10bit by using the intradifference method, that is, insert several grayscale values into the adjacent two grayscale data in the 8bit image parameter, so that the second image The parameters are more refined than those of the first image parameters.
  • step S50 may specifically include:
  • a grayscale value corresponding to any compensated luminance can be obtained.
  • the luminance value corresponding to each gray-scale of the sub-pixel is obtained.
  • the curve relationship between the gray level value and the first sub-pixel may refer to the distribution law of the second normalized target brightness.
  • the voltage values applied to the second sub-pixel and the third sub-pixel are mainly calculated by keeping the white chromaticity of all grayscale displays fixed, according to the second sub-pixel and the third sub-pixel.
  • the sum of the brightness of the three sub-pixels and the brightness of the first sub-pixel matches the brightness corresponding to each gray scale on the second normalized target brightness.
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are different ones of the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the first sub-pixel is a G sub-pixel. Since the green sub-pixel has a great influence on the white brightness, when performing matching calculation, the gray-scale voltage of the G sub-pixel is preferentially calculated.
  • the gray-scale brightness of the compensated original image parameters will change to a certain extent, there may be gray-scale brightness that does not correspond to the original image parameters.
  • the original image data needs to be converted from low bit depth to high bit depth to expand the range that can be matched.
  • the present application obtains the white balance compensation coefficient of the panel to be tested by processing the original image parameters, and the target brightness and the white balance compensation coefficient obtained according to the predetermined gamma value to obtain the desired value of the panel to be tested.
  • the target brightness eliminates the influence of the low voltage corresponding to the dark sub-pixel on the high voltage corresponding to the bright sub-pixel when the RGB sub-pixel is displayed alone, and improves the display quality of the display.
  • the present application also proposes a white balance adjustment device 100 , which includes an acquisition module 10 , a compensation module 20 , a first target brightness calculation module 30 , a second target brightness calculation module 40 , and an adjustment module 50 ;
  • the acquisition module 10 is used to acquire the first image parameter of the panel to be tested
  • the compensation module 20 is configured to obtain the white balance compensation coefficient of the panel to be tested according to the first image parameter of the panel to be tested;
  • the first target brightness calculation module 30 is configured to set the gamma value of the panel to be tested to a first threshold to obtain the first target brightness of the panel to be tested;
  • the second target brightness calculation module 40 is configured to obtain the second target brightness of the panel under test according to the white balance compensation coefficient of the panel under test and the first target brightness;
  • the adjustment module 50 is configured to acquire the gray-scale voltage corresponding to each sub-pixel of the panel to be tested according to the second target brightness of the panel to be tested.
  • the acquisition module 10 includes a scanning unit 101 and a brightness acquisition unit 102;
  • the scanning unit 101 is used for scanning the panel to be tested
  • the luminance obtaining unit 102 is configured to obtain the luminance value L R (i) of the R sub-pixel, the luminance value L G (i) of the G sub-pixel, and the luminance of the B sub-pixel of the panel to be tested at the i-th grayscale.
  • the compensation module 20 includes a first acquisition unit 201 , a second acquisition unit 202 , a dark state brightness calculation unit 203 , and a compensation unit 204 ;
  • the first obtaining unit 201 for obtaining the luminance of the R sub-pixel in the first test panel M gray level values L R (M), the luminance values of the sub-pixels G L G (M), B subpixels The luminance value L B (M), and the luminance value L W (M) of the W sub-pixel;
  • the second obtaining unit 202 is configured to obtain the luminance value L R (n) of the R sub-pixel, the luminance value L G (n) of the G sub-pixel, and the luminance value of the B sub-pixel of the panel to be tested at the nth grayscale. the luminance value L B (n), and the luminance value L W (n) of the W sub-pixel;
  • the dark state brightness calculation unit 203 is used to obtain the brightness L P of one pixel when the panel to be tested is in a dark state;
  • the first target brightness calculation module 30 includes a first target brightness calculation unit 301 and a first normalization unit 302;
  • the first target brightness calculation unit 301 is configured to set the gamma value of the panel to be tested to a first threshold, and obtain the first target brightness of the panel to be tested;
  • the first normalization unit 302 is configured to perform normalization processing on the first target brightness to obtain the first normalized target brightness of the panel to be tested.
  • the second target brightness calculation module 40 is configured to obtain the to-be-measured panel according to the ratio of the first normalized target brightness of the to-be-measured panel to the white balance compensation coefficient of the to-be-measured panel The second normalized target brightness of the measurement panel.
  • the white balance adjustment device 100 further includes a bit depth conversion module 60;
  • the bit depth conversion module 60 is configured to convert the first image parameter of the panel under test from a low bit depth to a high bit depth by using a first function to obtain a second image parameter of the panel under test.
  • the adjustment module 50 includes a first calculation unit 501, a second calculation unit 502 and a third calculation unit 503;
  • the first calculation unit 501 is configured to obtain the luminance value corresponding to each gray scale of the first sub-pixel in the RGB sub-pixels according to the second normalized target luminance of the panel to be tested;
  • the second calculation unit 502 is configured to obtain the luminance values of the second sub-pixel and the third sub-pixel at each gray level according to the luminance value corresponding to each gray level of the first sub-pixel and the second image parameter of the panel under test.
  • the third calculation unit 503 is configured to obtain the first sub-pixel, the second sub-pixel and the the gray-scale voltage corresponding to each gray-scale of the third sub-pixel;
  • the first sub-pixel, the second sub-pixel, and the third sub-pixel are different from each other among the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the present application also proposes an electronic device including a memory and a processor.
  • a computer program is stored in the memory; the processor is configured to execute the computer program to implement the above-mentioned white balance adjustment method, which is not repeated here.
  • the present application also proposes a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned white balance adjustment method is implemented, which will not be repeated here.
  • the present application proposes a white balance adjustment method, a device, and an electronic device.
  • the method includes: acquiring a first image parameter of a panel to be tested; white balance compensation coefficient; set the gamma value of the panel to be tested as a first threshold to obtain the first target brightness of the panel to be tested; according to the white balance compensation coefficient of the panel to be tested and the first target brightness to obtain the second target brightness of the panel to be tested; and to obtain the grayscale voltage corresponding to each sub-pixel of the panel to be tested according to the second target brightness of the panel to be tested.
  • the present application obtains the white balance compensation coefficient of the panel to be tested by processing the original image parameters, and the target brightness and the white balance compensation coefficient obtained according to the predetermined gamma value to obtain the desired value of the panel to be tested.
  • the target brightness eliminates the influence of the low voltage corresponding to the dark sub-pixel on the high voltage corresponding to the bright sub-pixel when the RGB sub-pixel is displayed alone, and improves the display quality of the display.

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Abstract

一种白平衡调整方法及其装置(100)、电子设备，方法包括：获取待测面板的第一图像参数(S10)；获取待测面板的白平衡补偿系数(S20)；使待测面板的伽马值为第一阈值，以获取待测面板的第一目标亮度(S30)；以及，获取待测面板的第二目标亮度(S40)；根据待测面板的第二目标亮度，以获取待测面板各子像素对应的灰阶电压(S50)。

Description

白平衡调整方法及其装置、电子设备 技术领域
本申请涉及显示领域，特别涉及一种白平衡调整方法及其装置、电子设备。
 背景技术
由于液晶面板的驱动与特性等因素，其白平衡灰阶色彩表现会有相当程度的色偏差异。为使显示器的色彩达到一定的正确性与一致性，因此，必须逐一对显示器进行灰阶白平衡(Grayscale white balance)的调整。
在现有的显示器中，当RGB子像素单独显示时，处于低灰阶状态下的两个子像素对应的低电压将会影响处于高灰阶状态下的子像素的高电压，从而导致RGB单色亮度会降低；当W显示时，RGB全亮，即RGB三个子像素都对应高电压，RGB三个子像素之间关于亮度的影响较小，即W亮度高。因此，在现有显示器中，当WRGB均处于任一灰阶时，W的亮度与RGB三个子像素的亮度之和均不相等，影响了显示器的显示品质。
因此，亟需一种白平衡的调整方法以解决上述技术问题。
 技术问题
本申请提供一种白平衡调整方法及装置、电子设备，以解决现有显示器显示品质低的技术问题。
 技术解决方案
本申请提出了一种白平衡调整方法，其包括：
获取待测面板的第一图像参数；
根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
在本申请的白平衡调整方法中，获取待测面板的第一图像参数的步骤包括：
扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
在本申请的白平衡调整方法中，根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数的步骤包括：
获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
获取所述待测面板处于暗态下时，一个像素的亮度L P；
获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
其中，n为0~M中的整数。
在本申请的白平衡调整方法中，使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度的步骤包括：
使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
在本申请的白平衡调整方法中，根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度的步骤包括：
根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
在本申请的白平衡调整方法中，在根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤之前，所述白平衡调整方法还包括：
利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
在本申请的白平衡调整方法中，根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤包括：
根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
本申请还提出了一种白平衡调整装置，其包括获取模块、补偿模块、第一目标亮度计算模块、第二目标亮度计算模块及调整模块；
所述获取模块用于获取待测面板的第一图像参数；
所述补偿模块用于根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
所述第一目标亮度计算模块用于使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
所述第二目标亮度计算模块用于根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
所述调整模块用于根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
在本申请的白平衡调整装置中，所述补偿模块包括第一获取单元、第二获取单元、暗态亮度计算单元、及补偿单元；
所述第一获取单元用于获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
所述第二获取单元用于获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
所述暗态亮度计算单元用于获取所述待测面板处于暗态下时，一个像素的亮度L P；
所述补偿单元用于获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
其中，n为0~M中的整数。
在本申请的白平衡调整装置中，所述第一目标亮度计算模块包括第一目标亮度计算单元和第一归一化单元；
所述第一目标亮度计算单元用于使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
所述第一归一化单元用于对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
在本申请的白平衡调整装置中，所述第二目标亮度计算模块用于根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
在本申请的白平衡调整装置中，所述获取模块用于扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
在本申请的白平衡调整装置中，所述白平衡调整装置还包括位深转换模块；
所述深转换模块利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
在本申请的白平衡调整装置中，所述调整模块包括第一计算单元、第二计算单元及第三计算单元；
所述第一计算单元用于根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
所述第二计算单元用于根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
所述第三计算单元用于根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
本申请还提出了一种电子设备，其包括存储器和处理器；
所述存储器中存储有计算机程序，所述处理器，用于执行所述计算机程序以实现一种白平衡调整方法，其包括：
获取待测面板的第一图像参数；
根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
在本申请的电子设备中，获取待测面板的第一图像参数的步骤包括：
扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
在本申请的电子设备中，根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数的步骤包括：
获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
获取所述待测面板处于暗态下时，一个像素的亮度L P；
获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
其中，n为0~M中的整数。
在本申请的电子设备中，使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度的步骤包括：
使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
在本申请的电子设备中，在根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤之前，所述白平衡调整方法还包括：
利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
在本申请的电子设备中，根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤包括：
根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
 有益效果
本申请通过对原始图像参数进行处理以获取所述待测面板的白平衡补偿系数，以及根据预定的伽马值所获取的目标亮度以及该白平衡补偿系数以获取所述待测面板所要达到的目标亮度，消除了RGB子像素单独显示时，暗态子像素对应的低电压对亮态子像素对应的高电压的影响，提升了显示器的显示品质。
 附图说明
图1为本申请白平衡调整方法的步骤图；
图2为本申请白平衡调整方法中各灰阶的(R+G+B)与W的比值曲线图；
图3为本申请白平衡调整装置的第一种结构图；
图4为本申请白平衡调整装置的第二种结构图；
图5为本申请白平衡调整装置的第三种结构图。
 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。
在现有的显示器中，当RGB子像素单独显示时，处于低灰阶状态下的两个子像素对应的低电压将会影响处于高灰阶状态下的子像素的高电压，从而导致RGB单色亮度会降低；当W显示时，RGB全亮，即RGB三个子像素都对应高电压，RGB三个子像素之间关于亮度的影响较小，即W亮度高。因此，在现有显示器中，当WRGB均处于任一灰阶时，W的亮度与RGB三个子像素的亮度之和均不相等，影响了显示器的显示品质。本申请基于上述技术问题提出了一种白平衡调整方法及装置。
请参阅图1，所述白平衡调整方法包括：
S10、获取待测面板的第一图像参数；
在本步骤中，其可以通过扫描装置、读取装置等获取所述待测面板的第一图像参数，本申请不作具体限制。
本步骤主要用于获取所述待测面板在任意灰阶下各子像素对应的亮度，例如所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
在本实施例中，i为0~M中的整数，M可以为2 8-1，2 10-1等，此处不作具体限定。
例如，8bit的待测显示面板，其包括256个灰阶数据。对于红色子像素，其包括0~255共256个灰阶数据，任一灰阶对应一亮度值。同理，对于绿色子像素、蓝色子像素及白色子像素，其均各对应256个灰阶数据。因此，对于8bit的待测显示面板，本步骤通过对应的装置获取了1024个灰阶数据。
S20、根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
在本实施例中，步骤S20可以包括：
S201、获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
S202、获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
由步骤S10所获取的数据，此处本步骤可以很容易获取所述待测面板的任一子像素在任一灰阶对应的亮度值。
在步骤S201中，以8bit为例，则M的数值为255。因此，步骤S201主要用于获取所述待测面板在第255灰阶时的R子像素的亮度值L R(255)、G子像素的亮度值L G(255)、B子像素的亮度值L B(255)、及W子像素的亮度值L W(255)。
S203、获取所述待测面板处于暗态下时，一个像素的亮度L P；
S204、获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
在步骤S203中，对于LCD显示面板，当显示面板子像素处于暗态时，由于背光是处于常亮状态，因此其具备一定的透光性，导致待测面板单像素显示时，例如红色子像素显示时，绿色和蓝色子像素处于暗态，但是由于面板具有一定的透光性，绿色子像素对应的灰阶亮度还需要减去绿色和蓝色子像素处于暗态时的亮度值。
另外，对于步骤S202中L R(n)+L R(n)+L R(n)的数值应该减去6个子像素在暗态时的发光亮度，而三个子像素的暗态亮度等于一个像素的暗态亮度。因此在步骤S204中，(L R(n)+L R(n)+L R(n)-2L P)/L W(n)的数值为所述待测面板第n灰阶单色子像素处于亮态时的亮度之和与三个子像素均处于亮态时白色子像素的亮度的比值，具体比值请参阅图2，图2中X方向为灰阶值，Y方向为（R+G+B）与W的比值。
而为了保证任一灰阶单色子像素处于亮态时的亮度之和与三个子像素均处于亮态时白色子像素的亮度相等，则需要将图2中曲线补偿至100%，因此可以具体得到所述待测面板的第n灰阶的补偿系数a={(L R(255)+L R(255)+L R(255)-2L P)/L W(255)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}。
在本实施例中，n为0~M中的整数。
S30、使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
在本实施例中，步骤S30具体可以包括：
S301、使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
S302、对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
在步骤S301中，主要用于获取所述待测面板需要达到的目标亮度曲线。
本步骤主要引入了显示领域中关于伽马值的概念，伽马值为显示面板中灰阶与亮度曲线图，不同的伽马值对应不同的曲线图。
以8bit的待测面板为例，伽马值与灰阶、亮度相关的公式为L=(n/255) γ；
在上述公式中，L为亮度，n为灰阶值，γ为伽马值。
因此，在预先设定一伽马值的前提下，本实施例可以获取所述待测面板的任一灰阶对应的亮度值，即所述第一目标亮度。
在本实施例中，所述第一阈值可以为任意值，此处不作具体的限定。
在本实施例中，所述第一阈值为2.2。
S40、根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
在本步骤中，首先获取步骤S20中的所述待测面板的白平衡补偿系数、以及步骤S30中的所述待测面板的第一归一化目标亮度。其次，根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
在本实施例中，所述第二归一化目标亮度为所述待测面板经补偿后所要达到的最终亮度。
在步骤S50之前，所述白平衡调整方法还应该包括步骤：
利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
例如，前述图像参数的数据为8bit，本步骤主要将该8bit向更高位深的转换。利用第一函数将所述待测面板的第一图像参数由8bit向10bit转换，以获取所述待测面板的第二图像参数。
在本实施例中，高位深与低位深的数值之差不小于2。
对于8bit的第一图像参数，其包括0~255共256个灰阶数据，而10bit的图像参数包括0~1023共1024个灰阶数据。本实施例可以但不限定于利用内差值法将第一图像参数由8bit向10bit转换，即在8bit图像参数中相邻两个灰阶数据插入数个灰阶值，使得所述第二图像参数相比第一图像参数的更加细化。
S50、根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
在本实施例中，步骤S50具体可以包括：
S501、根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
在本步骤中，首先根据所述第二归一化目标亮度以及L=(n/255) γ，可以获取任一补偿后的亮度所对应的灰阶值。其次，根据灰阶值与第一子像素的曲线关系，获取该种子像素在各灰阶对应的亮度值。
在本实施例中，灰阶值与第一子像素的曲线关系可以参考所述第二归一化目标亮度的分布规律。
S502、根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
S503、根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
在本步骤S502~S503中，主要通过在保持所有灰阶显示的白色色度固定的情况下，计算施加于第二子像素和第三子像素的电压值，根据所述第二子像素和第三子像素的亮度加上所述第一子像素的亮度三者之和去匹配所述第二归一化目标亮度上各灰阶对应的亮度。
在本实施例中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
在本实施例中，所述第一子像素为G子像素。由于绿色子像素对白光明度的影响较大，因此在进行匹配计算时，优先计算G子像素的各灰阶电压。
在本实施例中，由于补偿后的原始图像参数的灰阶亮度会发生一定的变化，原始图像参数中可能存在与之不对应的灰阶亮度，因此本申请在进行RGB子像素灰阶电压的匹配计算时，需要将原始图像数据由低位深向高位深转换，扩大可以匹配的范围。
本申请通过对原始图像参数进行处理以获取所述待测面板的白平衡补偿系数，以及根据预定的伽马值所获取的目标亮度以及该白平衡补偿系数以获取所述待测面板所要达到的目标亮度，消除了RGB子像素单独显示时，暗态子像素对应的低电压对亮态子像素对应的高电压的影响，提升了显示器的显示品质。
请参阅图3，本申请还提出了一种白平衡调整装置100，其包括获取模块10、补偿模块20、第一目标亮度计算模块30、第二目标亮度计算模块40及调整模块50；
所述获取模块10用于获取待测面板的第一图像参数；
所述补偿模块20用于根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
所述第一目标亮度计算模块30用于使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
所述第二目标亮度计算模块40用于根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
所述调整模块50用于根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
请参阅图4，所述获取模块10包括扫描单元101和亮度获取单元102；
所述扫描单元101用于扫描所述待测面板；
所述亮度获取单元102用于获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)，其中i为0~M中的整数。
请参阅图4，所述补偿模块20包括第一获取单元201、第二获取单元202、暗态亮度计算单元203、及补偿单元204；
所述第一获取单元201用于获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
所述第二获取单元202用于获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
所述暗态亮度计算单元203用于获取所述待测面板处于暗态下时，一个像素的亮度L P；
所述补偿单元204用于获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}。
请参阅图4，所述第一目标亮度计算模块30包括第一目标亮度计算单元301和第一归一化单元302；
所述第一目标亮度计算单元301用于使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
所述第一归一化单元302用于对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
在本实施例中，所述第二目标亮度计算模块40用于根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
请参阅图5，所述白平衡调整装置100还包括位深转换模块60；
所述位深转换模块60用于利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
请参阅图4，所述调整模块50包括第一计算单元501、第二计算单元502及第三计算单元503；
所述第一计算单元501用于根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
所述第二计算单元502用于根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
所述第三计算单元503用于根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
在本实施例中，所述白平衡调整装置相关工作原理可以参阅上述白平衡调整方法，此处不再详细赘述。
本申请还提出了一种电子设备，其包括存储器和处理器。
在本实施例中，所述存储器中存储有计算机程序；所述处理器，用于执行所述计算机程序以实现上述白平衡调整方法，此处不再赘述。
本申请还提出了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现上述白平衡调整方法，此处不再赘述。
本申请提出了一种白平衡调整方法及其装置、电子设备，该方法包括：获取待测面板的第一图像参数；根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。本申请通过对原始图像参数进行处理以获取所述待测面板的白平衡补偿系数，以及根据预定的伽马值所获取的目标亮度以及该白平衡补偿系数以获取所述待测面板所要达到的目标亮度，消除了RGB子像素单独显示时，暗态子像素对应的低电压对亮态子像素对应的高电压的影响，提升了显示器的显示品质。
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. 一种白平衡调整方法，其中，包括：
    获取待测面板的第一图像参数；
    根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
    使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
    根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
    根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
  2. 根据权利要求1所述的白平衡调整方法，其中，获取待测面板的第一图像参数的步骤包括：
    扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
  3. 根据权利要求2所述的白平衡调整方法，其中，根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数的步骤包括：
    获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
    获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
    获取所述待测面板处于暗态下时，一个像素的亮度L P；
    获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
    其中，n为0~M中的整数。
  4. 根据权利要求1所述的白平衡调整方法，其中，使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度的步骤包括：
    使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
    对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
  5. 根据权利要求4所述的白平衡调整方法，其中，
    根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度的步骤包括：
    根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
  6. 根据权利要求1所述的白平衡调整方法，其中，
    在根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤之前，所述白平衡调整方法还包括：
    利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
  7. 根据权利要求6所述的白平衡调整方法，其中，根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤包括：
    根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
    根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
    根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
    其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
  8. 一种白平衡调整装置，其中，包括获取模块、补偿模块、第一目标亮度计算模块、第二目标亮度计算模块及调整模块；
    所述获取模块用于获取待测面板的第一图像参数；
    所述补偿模块用于根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
    所述第一目标亮度计算模块用于使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
    所述第二目标亮度计算模块用于根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
    所述调整模块用于根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
  9. 根据权利要求8所述的白平衡调整装置，其中，所述补偿模块包括第一获取单元、第二获取单元、暗态亮度计算单元、及补偿单元；
    所述第一获取单元用于获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
    所述第二获取单元用于获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
    所述暗态亮度计算单元用于获取所述待测面板处于暗态下时，一个像素的亮度L P；
    所述补偿单元用于获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
    其中，n为0~M中的整数。
  10. 根据权利要求8所述的白平衡调整装置，其中，所述第一目标亮度计算模块包括第一目标亮度计算单元和第一归一化单元；
    所述第一目标亮度计算单元用于使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
    所述第一归一化单元用于对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
  11. 根据权利要求8所述的白平衡调整装置，其中，所述第二目标亮度计算模块用于根据所述待测面板的第一归一化目标亮度与所述待测面板的白平衡补偿系数的比值，以获取所述待测面板的第二归一化目标亮度。
  12. 根据权利要求8所述的白平衡调整装置，其中，所述获取模块用于扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
  13. 根据权利要求8所述的白平衡调整装置，其中，所述白平衡调整装置还包括位深转换模块；
    所述深转换模块利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
  14. 根据权利要求13所述的白平衡调整装置，其中，所述调整模块包括第一计算单元、第二计算单元及第三计算单元；
    所述第一计算单元用于根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
    所述第二计算单元用于根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
    所述第三计算单元用于根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
    其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
  15. 一种电子设备，其中，包括存储器和处理器；
    所述存储器中存储有计算机程序，所述处理器，用于执行所述计算机程序以实现一种白平衡调整方法，其包括：
    获取待测面板的第一图像参数；
    根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数；
    使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度；
    根据所述待测面板的白平衡补偿系数及所述第一目标亮度，以获取所述待测面板的第二目标亮度；
    根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压。
  16. 根据权利要求15所述的电子设备，其中，获取待测面板的第一图像参数的步骤包括：
    扫描所述待测面板，获取所述待测面板在第i灰阶时的R子像素的亮度值L R(i)、G子像素的亮度值L G(i)、B子像素的亮度值L B(i)、及W子像素的亮度值L W(i)。
  17. 根据权利要求16所述的电子设备，其中，根据所述待测面板的第一图像参数，获取所述待测面板的白平衡补偿系数的步骤包括：
    获取所述待测面板在第M灰阶时的R子像素的亮度值L R(M)、G子像素的亮度值L G(M)、B子像素的亮度值L B(M)、及W子像素的亮度值L W(M)；
    获取所述待测面板在第n灰阶时的R子像素的亮度值L R(n)、G子像素的亮度值L G(n)、B子像素的亮度值L B(n)、及W子像素的亮度值L W(n)；
    获取所述待测面板处于暗态下时，一个像素的亮度L P；
    获取所述待测面板第n灰阶的补偿系数a={(L R(M)+L R(M)+L R(M)-2L P)/L W(M)}/{(L R(n)+L R(n)+L R(n)-2L P)/L W(n)}；
    其中，n为0~M中的整数。
  18. 根据权利要求15所述的电子设备，其中，使所述待测面板的伽马值为第一阈值，以获取所述待测面板的第一目标亮度的步骤包括：
    使所述待测面板的伽马值为第一阈值，获取所述待测面板的第一目标亮度；
    对所述第一目标亮度进行归一化处理，以获取所述待测面板的第一归一化目标亮度。
  19. 根据权利要求15所述的电子设备，其中，
    在根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤之前，所述白平衡调整方法还包括：
    利用第一函数将所述待测面板的第一图像参数由低位深向高位深转换，以获取所述待测面板的第二图像参数。
  20. 根据权利要求19所述的电子设备，其中，根据所述待测面板的第二目标亮度，以获取所述待测面板各子像素对应的灰阶电压的步骤包括：
    根据所述待测面板的第二归一化目标亮度，获取RGB子像素中第一子像素在各灰阶对应的亮度值；
    根据第一子像素在各灰阶对应的亮度值及所述待测面板的第二图像参数，获取所述第二子像素及所述第三子像素在各灰阶对应的亮度值；
    根据所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的亮度值，获取所述第一子像素、第二子像素及所述第三子像素在各灰阶对应的灰阶电压；
    其中，所述第一子像素、所述第二子像素、及所述第三子像素为R子像素、G子像素及B子像素中互不相同的一者。
PCT/CN2020/106851 2020-07-07 2020-08-04 白平衡调整方法及其装置、电子设备 WO2022007080A1 (zh)

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