US 11,705,029 B1
Curved display panel color and brightness calibration systems and methods
Sheng Zhang, San Jose, CA (US); Shengchang Cai, Sunnyvale, CA (US); ByoungSuk Kim, Palo Alto, CA (US); and Yi Huang, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 26, 2020, as Appl. No. 17/3,660.
Claims priority of provisional application 62/898,524, filed on Sep. 10, 2019.
Int. Cl. G09G 3/00 (2006.01); G09G 5/10 (2006.01); G06T 7/00 (2017.01); G09G 3/20 (2006.01); G09G 3/3208 (2016.01)
CPC G09G 3/035 (2020.08) [G06T 7/97 (2017.01); G09G 3/2003 (2013.01); G09G 5/10 (2013.01); G09G 3/3208 (2013.01); G09G 2320/029 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0646 (2013.01); G09G 2320/0693 (2013.01); G09G 2330/00 (2013.01); G09G 2360/141 (2013.01); G09G 2360/145 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an electronic display comprising a display pixel implemented on a display panel, wherein the electronic display is configured to control light emission from the display pixel based at least in part on display image data to facilitate displaying image content on the display panel; and
image processing circuitry configured to process input image data corresponding with the image content to determine the display image data at least in part by:
when the electronic display is to display the display image data at a first brightness setting of the electronic display:
applying a first pixel uniformity compensation factor to the input image data, wherein the image processing circuitry is configured to determine the first pixel uniformity compensation factor to be applied to the input image data based at least in part on a first pixel uniformity compensation factor map that is calibrated to the display panel while the display panel has a flat shape; and
applying a first panel curvature compensation factor to the input image data when the image content is to be displayed on the display panel while the display panel has a curved shape, wherein the image processing circuitry is configured to determine the first panel curvature compensation factor to be applied to the input image data based at least in part on a first panel curvature compensation factor map that is calibrated to the display panel after the display panel is bent from the flat shape to the curved shape; and
when the electronic display is to display the display image data at a second brightness setting of the electronic display:
applying a second pixel uniformity compensation factor to the input image data, wherein the image processing circuitry is configured to determine the second pixel uniformity compensation factor to be applied to the input image data based at least in part on a second pixel uniformity compensation factor map calibrated to the display panel while the display panel has the flat shape; and
applying a second panel curvature compensation factor to the input image data when the image content is to be displayed on the display panel while the display panel has the curved shape, wherein the image processing circuitry is configured to determine the second panel curvature compensation factor to be applied to the input image data based at least in part on a second panel curvature compensation factor map that is calibrated to the display panel after the display panel is bent from the flat shape to the curved shape.