Patent ID: 11881145
Assignee: KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A method for determining a brightness compensation of a display panel to be compensated, the display panel to be compensated has a first display region and a second display region, and the method comprises:
obtaining, at any grayscale, a plurality of first acquired brightness values of a plurality of first sub-pixels of a target color in the first display region and a plurality of second acquired brightness values of a plurality of second sub-pixels of the target color in the second display region of the display panel to be compensated;
determining whether an acquisition ratio of an average value of the plurality of first acquired brightness values to an average value of the plurality of second acquired brightness values is within a standard range, wherein the standard range is determined according to a sample display panel;
correcting, under a condition that the acquisition ratio is not within the standard range, at least one of i) the plurality of first acquired brightness values or ii) the plurality of second acquired brightness values to obtain a corrected brightness value of the display panel to be compensated, so that a corrected ratio of an average brightness value of the plurality of first sub-pixels of the target color to an average brightness value of the plurality of second sub-pixels of the target color after correction is within the standard range, and wherein the corrected brightness value comprises at least one of i) a plurality of first corrected brightness values of the plurality of first sub-pixels or ii) a plurality of second corrected brightness values of the plurality of second sub-pixels; and
using the corrected brightness value as a display brightness value of the display panel to be compensated, and determining the brightness compensation parameter of the display panel to be compensated based on the corrected brightness value,
wherein correcting, under a condition that the acquisition ratio is not within the standard range, comprises:
obtaining the plurality of first corrected brightness values by multiplying the plurality of first acquired brightness values by a correction coefficient, so that a corrected ratio of an average value of the plurality of first corrected brightness values to the average value of the plurality of second acquired brightness values is within the standard range,
wherein the brightness compensation parameter comprises a compensation grayscale value, and determining the brightness compensation parameter of the display panel to be compensated based on the corrected brightness value comprises:
determining a first average brightness value of the first display region according to the plurality of first corrected brightness values of the plurality of first sub-pixels;
determining a second average brightness value of the second display region according to the plurality of second acquired brightness values of the plurality of second sub-pixels;
determining a first grayscale value corresponding to the first average brightness value and a second grayscale value corresponding to the second average brightness value according to a correspondence relationship between brightness values of the display panel to be compensated and grayscale values; and
using a difference between the second grayscale value and the first grayscale value as the compensation grayscale value for the plurality of first sub-pixels.