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CN-122024625-A - Gamma voltage adjusting method, device and terminal

CN122024625ACN 122024625 ACN122024625 ACN 122024625ACN-122024625-A

Abstract

The application provides a gamma voltage regulating method, a device and a terminal, wherein the method comprises the steps of obtaining a first register value and a tristimulus value of each binding point of N screen bodies under a first brightness level, wherein the first register value is the register value of each binding point regulated by gamma voltage, and the tristimulus value indicates the brightness value of each binding point regulated by gamma voltage; according to the tristimulus values and the first register values, a first model is obtained, the first model is used for outputting initial register values of each binding point of M screens under a first brightness level, N screens and M screens belong to the same batch of screens, M is a positive integer greater than 1, N is a positive integer greater than N, and M screens are subjected to batch gamma voltage adjustment according to the initial register values. The gamma voltage adjusting method, the gamma voltage adjusting device and the gamma voltage adjusting terminal are beneficial to quickly and accurately determining the initial register value of each binding point of the batch of screen bodies and improving the gamma voltage adjusting efficiency.

Inventors

  • MEN XUEMIN
  • LI XING

Assignees

  • 北京京东方显示技术有限公司
  • 京东方科技集团股份有限公司
  • 北京京东方技术开发有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (12)

  1. 1. A gamma voltage adjustment method, comprising: acquiring a first register value and a tristimulus value of each binding point of N screen bodies under a first brightness level, wherein the first register value indicates the register value of each binding point after gamma voltage adjustment, and the tristimulus value indicates the brightness value of each binding point after gamma voltage adjustment; Obtaining a first model according to the tristimulus values and the first register values, wherein the first model is used for outputting initial register values of each binding point of M screen bodies under the first brightness level, the N screen bodies and the M screen bodies belong to the same batch of screen bodies, M is larger than N, and N and M are positive integers larger than 1; And carrying out batch gamma voltage adjustment on the M screen bodies according to the initial register value.
  2. 2. The method of claim 1, wherein the first model satisfies the formula: ; For the initial register value, Y is the luminance value in the tristimulus values, c is the first register value when Y is close to 0, b and Is constant.
  3. 3. The method of claim 2, wherein the obtaining a first model from the tristimulus values and the first register values comprises: Acquiring training data pairs of each binding point of the N screen bodies under a first brightness level, wherein the training data pairs comprise J and S, J=ln (reg-c), and S= lnY; Acquiring a change rate w, a mean value w mean and a standard deviation w std between adjacent training data pairs; Replacing the abnormal training data pair of w std with a first training data pair, wherein the absolute value of the difference value between the change rate w and the w mean is larger than 3 times, and acquiring the updated training data pair of each binding point of the N screen bodies under a first brightness level, wherein the first training data pair is the training data pair of the first binding point under the first brightness level; And training the first model according to the training data pairs corresponding to each binding point of the N updated screen bodies under the first brightness level.
  4. 4. A method according to claim 2 or 3, wherein the first model further satisfies the formula: J=B×S+A,B=b, 。
  5. 5. The method of claim 3 or 4, wherein training the first model based on the updated training data pairs for each binding point of the N panels at a first brightness level comprises: And carrying out iterative computation on the B and the A through a gradient descent method according to the loss function of the first model and the updated training data pair, and obtaining the values of the B and the A.
  6. 6. The method according to any one of claims 1 to 5, further comprising: Acquiring the first register value of each binding point of the N screen bodies under a plurality of brightness levels, wherein the first color coordinate value and the first brightness value of each binding point are regulated by gamma voltage, the first color coordinate value has a corresponding relation with the tristimulus value, and the plurality of brightness levels comprise the first brightness level; constructing a training database, wherein the training database comprises the first register value, the first color coordinate value and the first brightness value; in the process of batch gamma voltage adjustment, acquiring a second register value of each binding point of a first screen body in the M screen bodies under a first brightness level, wherein the second register value is a register value subjected to gamma voltage adjustment; and adding the second register value, the second color coordinate value and the second brightness value to the training database.
  7. 7. A gamma voltage regulating apparatus comprising means or units for performing the method of any one of claims 1 to 6.
  8. 8. A gamma voltage regulating apparatus, comprising: A processor for executing a computer program stored in a memory to cause the apparatus to perform the method of any one of claims 1 to 6.
  9. 9. A computer readable storage medium having stored thereon instructions which, when executed by a processor, implement the method of any of claims 1 to 6.
  10. 10. A chip, characterized in that it comprises a circuit for performing the method according to any of claims 1 to 6.
  11. 11. A computer program product, characterized in that it comprises computer program code which, when being executed by a processor, implements the method according to any of claims 1 to 6.
  12. 12. A terminal comprising the apparatus of claim 7 or 8, or the computer readable storage medium of claim 9, or the chip of claim 10, or the terminal loaded with the computer program product of claim 11.

Description

Gamma voltage adjusting method, device and terminal Technical Field The present application relates to the field of display technologies, and in particular, to a gamma voltage adjustment method, apparatus, and terminal. Background On the production line of the display screen, gamma voltage adjustment is an iterative optimization technique for correcting the brightness and chromaticity of the display screen. But the efficiency of the gamma voltage adjustment depends on the difference between the initial register value and the actual gamma voltage adjusted register value. For example, when the set initial register value is smaller than the register value after the actual gamma voltage adjustment, the adjustment frequency of the gamma voltage adjustment is smaller, and the efficiency is higher. In view of this, how to set a proper initial register value to improve the efficiency of gamma voltage adjustment is an urgent issue to be solved. Disclosure of Invention The application provides a gamma voltage adjusting method, a gamma voltage adjusting device and a gamma voltage adjusting terminal, which are beneficial to quickly and accurately determining the initial register value of each binding point of batch screen bodies and improving the gamma voltage adjusting efficiency. The application provides a gamma voltage adjusting method, which comprises the steps of obtaining a first register value and a tristimulus value of each binding point of N screens under a first brightness level, wherein the first register value is a register value of each binding point after gamma voltage adjustment, the tristimulus value indicates the brightness value of each binding point after gamma voltage adjustment, obtaining a first model according to the tristimulus value and the first register value, the first model is used for outputting an initial register value of each binding point of M screens under the first brightness level, the N screens and the M screens belong to the same batch of screens, M is a positive integer larger than 1, and the M screens are subjected to batch gamma voltage adjustment according to the initial register value. Based on the scheme, a first model is constructed through the data of each binding point of a small number of screen bodies under the first brightness level (band) after gamma voltage adjustment, the first model is obtained based on the actual measurement data of part of screen bodies in the same batch of screen bodies, the characteristics of the screen bodies in the batch can be accurately reflected, and the initial register value output by the first model has higher precision and can reflect the initial register value of each binding point of the screen bodies in the same batch under the first brightness level. The method is suitable for a large-scale batch production scene, can quickly and accurately determine the initial register value of each binding point of the batch of screen bodies, is beneficial to saving the time of gamma voltage adjustment and improves the efficiency of gamma voltage adjustment. With reference to the first aspect, in certain implementations of the first aspect, the first model satisfies the formula: reg is the initial register value, Y is the luminance value in the tristimulus values, c is the first register value when Y is close to 0, b and Is constant. With reference to the first aspect, in certain implementations of the first aspect, the first model further satisfies the formula j=b×s+a, b=b,。 With reference to the first aspect, in some implementations of the first aspect, obtaining the first model according to the tristimulus values and the first register values includes obtaining training data pairs of each binding point of N screen bodies under the first brightness level, where the training data pairs include J and S, j=ln (reg-c), s= lnY, obtaining a mean value w mean and a standard deviation w std of a change rate w between adjacent training data pairs (J, S), replacing an abnormal training data pair with a change rate w and w mean, where an absolute value of the difference value is greater than 3 times w std, with the first training data pair, obtaining training data pairs of each binding point of the updated N screen bodies under the first brightness level, where the first training data pairs are training data pairs of the first binding point under the first brightness level, and training the first model according to the training data pairs of each binding point of the updated N screen bodies under the first brightness level. Based on the scheme, the abnormal training data pairs are screened through the change rate, the abnormal training data pairs are replaced by the first training data pairs, the training data pairs deviating from the normal trend can be identified and deleted, the reliability of the training data pairs is guaranteed, the interference of the abnormal training data pairs to the first model is reduced, and the accuracy and the robustness o