US 11,710,461 B2
Display device and method for measuring gamma of the same
Geon Hwi Park, Anyang-si (KR); Jung Eon An, Asan-si (KR); and Ki Hyun Pyun, Gwangmyeong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Dec. 8, 2021, as Appl. No. 17/545,992.
Claims priority of application No. 10-2021-0035945 (KR), filed on Mar. 19, 2021.
Prior Publication US 2022/0301508 A1, Sep. 22, 2022
Int. Cl. G09G 3/3291 (2016.01); G09G 3/3266 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 3/3266 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0673 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A gamma measurement method of a display device, the method including:
storing a current value that is measured during gamma tuning of a display panel;
updating a target current of global current management (GCM) from an initial value of the target current based on the current value; and
measuring gamma of the display panel while applying the updated target current of the GCM.