US 12,424,142 B2
Driving controller and a display device including the same
Jaesung Bae, Suwon-si (KR); and Junhan Ko, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Apr. 8, 2023, as Appl. No. 18/132,383.
Claims priority of application No. 10-2022-0092249 (KR), filed on Jul. 26, 2022.
Prior Publication US 2024/0038134 A1, Feb. 1, 2024
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2092 (2013.01) [G09G 2310/027 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A driving controller, comprising:
a data converter configured to convert an X grayscale value of N-th frame data into a Y grayscale value of the N-th frame data based on a Y grayscale value of N−1-th frame data, wherein the Y grayscale value of the N-th frame data represents a grayscale value corresponding to the actual luminance of the N-th frame data, and the Y grayscale value of the N−1-th frame data represents a grayscale value corresponding to the actual luminance of the N−1-th frame data;
a frame memory configured to receive the Y grayscale value of the N-th frame data directly from the data convertor and output the Y grayscale value of N−1-th frame data to the data converter; and
a data compensator configured to compensate the X grayscale value of the N-th frame data based on the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data and generate a compensated grayscale value for the N-th frame data, wherein the compensated grayscale value is applied for overdriving a display panel over a plurality of frames, and wherein N is a natural number greater than or equal to 2,
wherein the data converter is configured to convert the X grayscale value of the N-th frame data into the Y grayscale value of the N-th frame data based on the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data,
wherein when the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data are different, the data converter is configured to generate the Y grayscale value of the N-th frame data that is adjusted for the overdriving based on the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data, wherein the Y grayscale value of the N-th frame data is distinct from both the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data, wherein the Y grayscale value of the N-th frame data is stored in the frame memory for use in adjusting subsequent frame data based on the Y grayscale value of the N−1th frame data, and
wherein when the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data are different, the Y grayscale value of the N-th frame data is a value between the X grayscale value of the N-th frame data and the Y grayscale value of the N−1-th frame data.