US 12,073,776 B2
Afterimage compensator, display device including the same, and method of compensating for image data of display device
Seok Ha Hong, Yongin-si (KR); Joon Chul Goh, Yongin-si (KR); Dong Joon Kwag, Yongin-si (KR); and Jae Sung Bae, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Sep. 28, 2022, as Appl. No. 17/955,327.
Claims priority of application No. 10-2021-0131951 (KR), filed on Oct. 5, 2021.
Prior Publication US 2023/0104466 A1, Apr. 6, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/045 (2013.01); G09G 2320/048 (2013.01); G09G 2360/147 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An afterimage compensator comprising:
a pixel data generator configured to generate characteristic data for one or more pixels from among a plurality of pixels by using a captured image, wherein the characteristic data includes a deterioration information for one or more pixels;
a stress accumulator configured to generate an accumulated stress for the one or more pixels from among the plurality of pixels in which stress corresponding to the one or more pixels is accumulated based on an image signal of a voltage domain, wherein the plurality of pixels include light emitting elements;
a domain converter configured to convert the accumulated stress for the one or more pixels from the voltage domain to accumulated stress data for the one or more pixels of a grayscale domain, wherein the stress data includes at least one information among an emission time, a grayscale, a luminance, and a temperature; and
a compensator configured to generate compensation data using the characteristic data for the one or more pixels and the accumulated stress data for the one or more pixels,
wherein stress accumulator accumulates the stress before the compensation data is output, and
wherein the afterimage compensator is implemented as one of an application processor and an integrated circuit.