US 12,033,550 B2
Method of testing display device
Ahnho Jee, Hwaseong-si (KR); Heebum Park, Seongnam-si (KR); Sang-Woo Park, Cheonan-si (KR); Keunhyuk Youn, Hwaseong-si (KR); and Sungho Cho, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 15, 2022, as Appl. No. 18/082,187.
Claims priority of application No. 10-2022-0037942 (KR), filed on Mar. 28, 2022.
Prior Publication US 2023/0316965 A1, Oct. 5, 2023
Int. Cl. G09G 3/00 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 2310/0267 (2013.01); G09G 2330/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of testing a display device including a display panel which displays an image and a driver which drives the display panel, the method comprising:
measuring a driving operating current in a state where the driver is enabled and the display panel is disabled, and determining whether the driver is defective, based on the driving operating current, wherein the driver comprises:
a logic part which receives an image signal and changes the image signal into an image data signal corresponding to the display panel; and
an analog part which changes the image data signal into a data signal for driving the display panel; and
wherein determining whether the driver is defective comprises:
measuring a first sub driving current in a state where the logic part is enabled and the analog part is disabled; and
determining whether the logic part is defective, based on the first sub driving current.