US 12,142,203 B2
Display device including timing controller that estimates temperature using on-pixel ratio and method of driving the same
Min Weun Kim, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Dec. 23, 2022, as Appl. No. 18/146,273.
Claims priority of application No. 10-2022-0006761 (KR), filed on Jan. 17, 2022.
Prior Publication US 2023/0230541 A1, Jul. 20, 2023
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2300/0842 (2013.01); G09G 2310/0272 (2013.01); G09G 2310/08 (2013.01); G09G 2320/041 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixels;
a timing controller configured to calculate an on-pixel ratio of first image data and correct the first image data into second image data based on the on-pixel ratio; and
a data driver configured to generate a data signal based on the second image data and provide the data signal to the pixels,
wherein the timing controller calculates the second image data by estimating a temperature of the display panel using the on-pixel ratio and gamma-correcting the first image data in response to the temperature,
wherein the timing controller comprises a counter configured to calculate an accumulated value by counting the on-pixel ratio, and
wherein the counter includes a buffer that stores the accumulated value, and initializes the accumulated value stored in the buffer when a black pattern is included in the first image data or when power is turned off.