US 11,749,215 B2
Display driving device and driving method
Do Hoon Lee, Daejeon (KR); Jung Eun Baek, Daejeon (KR); Chan Yung Kim, Daejeon (KR); Hyun Kyu Jeon, Daejeon (KR); and Ji Won Lee, Daejeon (KR)
Assigned to LX SEMICON CO., LTD., Daejeon (KR)
Filed by SILICON WORKS CO., LTD., Daejeon (KR)
Filed on May 11, 2021, as Appl. No. 17/317,385.
Claims priority of application No. 10-2020-0056624 (KR), filed on May 12, 2020.
Prior Publication US 2021/0358426 A1, Nov. 18, 2021
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/3406 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display driving device comprising:
a brightness calculator for calculating first brightness data corresponding to a first resolution and second brightness data corresponding to a second resolution less than the first resolution using input image data;
an offset calculator for calculating an offset on the basis of the first brightness data and the second brightness data;
an input image converter for converting the input image data into input image data to which the calculated offset has been applied;
a first data output unit for generating output image data for a first panel using the converted input image data and outputting the generated output image data; and
a second data output unit for generating output brightness data for a second panel using the second brightness data and outputting the generated output brightness data,
wherein the first panel has the first resolution, includes a plurality of first unit pixels, and each of the plurality of first unit pixels includes a plurality of subpixels having different colors,
wherein the second panel has the second resolution and includes a plurality of second unit pixels, and
wherein the offset calculator includes a second offset calculator for calculating a second offset on the basis of a brightness value of a first edge unit pixel determined based on a difference in brightness values from adjacent first unit pixels from among the plurality of first unit pixels, an expected brightness value of a second edge unit pixel disposed at a position corresponding to the first edge unit pixel from among the plurality of second unit pixels, and an edge intensity.