US 11,984,069 B2
Image sticking compensating device and display device having the same
Sang-Myeon Han, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Oct. 17, 2022, as Appl. No. 17/967,802.
Application 17/967,802 is a continuation of application No. 17/090,308, filed on Nov. 5, 2020, granted, now 11,501,700.
Application 17/090,308 is a continuation of application No. 16/358,574, filed on Mar. 19, 2019, granted, now 10,839,743, issued on Nov. 17, 2020.
Application 16/358,574 is a continuation of application No. 15/411,486, filed on Jan. 20, 2017, granted, now 10,262,582, issued on Apr. 16, 2019.
Claims priority of application No. 10-2016-0007913 (KR), filed on Jan. 22, 2016.
Prior Publication US 2023/0038211 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2320/0257 (2013.01); G09G 2320/0271 (2013.01); G09G 2320/041 (2013.01); G09G 2320/046 (2013.01); G09G 2320/048 (2013.01); G09G 2320/0666 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An image sticking compensating circuit comprising:
a first circuit portion configured to generate age data by accumulating degradation data of each frame corresponding an image displayed on a display panel;
a second circuit portion configured to generate a scaled input grayscale of input image data by multiplying an input grayscale of the input image data by a scaling ratio that is determined by age value corresponding to the age data to downscale the input grayscale of the input image data; and
a third circuit portion configured to generate age compensation data, which is a compensated version of the input image data, by applying a grayscale compensation value that is determined by the age data and the scaled input grayscale of the input image data to the scaled input grayscale of the input image data.