US 11,741,865 B2
Apparatus for testing display device and display device for performing mura compensation and mura compensation method
Sihun Jang, Hwaseong-si (KR); Seyun Kim, Hwaseong-si (KR); Sangcheol Park, Hwaseong-si (KR); and Mingyu Kim, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Mar. 3, 2021, as Appl. No. 17/191,600.
Claims priority of application No. 10-2020-0076019 (KR), filed on Jun. 22, 2020.
Prior Publication US 2021/0398462 A1, Dec. 23, 2021
Int. Cl. G09G 3/00 (2006.01); G09G 3/34 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 2310/0267 (2013.01); G09G 2310/0275 (2013.01); G09G 2320/0233 (2013.01); G09G 2340/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A test apparatus comprising:
a mura detection filter configured to detect a mura area based on a detected image signal, and output position information of the mura area and a filtered image signal;
an image enhancement processor configured to perform deblurring on the filtered image signal based on the position information, and output a deblurred image signal;
a mura corrector configured to generate first compensation data for the mura area based on the deblurred image signal;
a sampling corrector configured to generate second compensation data for a non-mura area based on the detected image signal; and
a compensator configured to output compensation data based on the first compensation data and the second compensation data.