US 12,412,503 B2
Display device and method of compensating data for the same
Se Hyuk Park, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 12, 2022, as Appl. No. 17/886,458.
Claims priority of application No. 10-2021-0163454 (KR), filed on Nov. 24, 2021.
Prior Publication US 2023/0162647 A1, May 25, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/3258 (2016.01)
CPC G09G 3/2074 (2013.01) [G09G 3/2003 (2013.01); G09G 3/3258 (2013.01); G09G 2360/16 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A display device comprising:
a data compensator to generate output image data by adding an extension bit to input image data received from an external processor;
a data driver to supply a data voltage corresponding to the output image data to each of data lines; and
a pixel unit including a plurality of sub-pixels,
wherein a first data line for providing a first color data signal is connected to a first sub-pixel disposed in an odd-numbered pixel row through a first anode, and is connected to a second sub-pixel disposed in an even-numbered pixel row through a second anode having a different size than the first anode, where the first sub-pixel and the second sub-pixel are same color sub-pixels;
wherein the first anode comprises a first connection portion connected to a first contact hole,
wherein the second anode comprises a second connection portion connected to a second contact hole, the second connection portion having a different length than the first connection portion, and
wherein the data compensator is configured to add a first extension bit to the input image data corresponding to the first sub-pixel and add a second extension bit to the input image data corresponding to the second sub-pixel; wherein:
the extension bit is 2 bits,
the first extension bit is ‘00’, and the second extension bit is set to any one of ‘00’, ‘01’, 10’, and ‘11’ based on a lookup table set according to each grayscale level and each emission color of the sub-pixels; and wherein the second extension bit is determined based on a ratio of a difference in value between a driving current of the first sub-pixel and a driving current of the second sub-pixel to a magnitude of a driving current that changes 1 grayscale value at each grayscale level.