US 12,243,465 B2
Display pixel non-uniformity compensation
Sunmin Jang, Sunnyvale, CA (US); Mahdi Farrokh Baroughi, Santa Clara, CA (US); Saif Choudhary, San Jose, CA (US); Hopil Bae, Palo Alto, CA (US); Gautam Agrawal, Santa Clara, CA (US); Ionut A Mirel, Cupertino, CA (US); Hari P Paudel, Milpitas, CA (US); Haitao Li, Mountain View, CA (US); Wei H Yao, Palo Alto, CA (US); Mahesh B Chappalli, San Jose, CA (US); and Young Don Bae, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Apr. 6, 2023, as Appl. No. 18/296,934.
Claims priority of provisional application 63/340,841, filed on May 11, 2022.
Prior Publication US 2023/0368718 A1, Nov. 16, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2007 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0426 (2013.01); G09G 2310/0264 (2013.01); G09G 2310/08 (2013.01); G09G 2320/02 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/16 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an electronic display comprising a plurality of display pixels configured to display image content; and
processing circuitry configured to:
receive image data corresponding to a display pixel of the plurality of display pixels;
convert a gray level of the image data into a luminance value of a luminance domain;
perform a first correction for non-uniformity associated with the display pixel by adjusting the luminance value of the display pixel according to one or more gain masks; and
perform a second correction for the non-uniformity associated with the display pixel by converting the luminance value to a digital code based at least in part on a curve associated with an anode on which the display pixel is disposed.