US 12,333,970 B2
Method of determining a gate voltage of a display device, and display device
Jun-Ho Hwang, Yongin-si (KR); and Hyungjun An, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 23, 2024, as Appl. No. 18/643,641.
Claims priority of application No. 10-2023-0125954 (KR), filed on Sep. 20, 2023.
Prior Publication US 2025/0095525 A1, Mar. 20, 2025
Int. Cl. G09G 3/00 (2006.01); G09G 3/20 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 3/2007 (2013.01); G09G 2320/02 (2013.01); G09G 2330/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a gate voltage of a display device, the method comprising:
determining gamma reference voltages including a black data voltage by performing a multi-time programming operation on the display device;
providing copy mura pattern data to the display device;
obtaining a luminance curve of the gate voltage by measuring luminance of the display device while gradually changing the gate voltage;
determining a peak gate voltage corresponding to a peak point of the luminance curve; and
determining a final gate voltage based on the black data voltage and the peak gate voltage.
 
11. A display device comprising:
a display panel including a plurality of pixels;
a gamma reference voltage generator which generates gamma reference voltages including a black data voltage;
a data driver which provides data voltages to the plurality of pixels based on the gamma reference voltages; and
a gate driver which provides gate signals having a final gate voltage to the plurality of pixels,
wherein the gamma reference voltages are determined by performing a multi-time programming operation on the display device,
wherein copy mura pattern data are provided to the display device, luminance of the display device is measured while gradually changing a gate voltage, and a luminance curve of the gate voltage is obtained, and
wherein the final gate voltage is determined based on the black data voltage and a peak gate voltage corresponding to a peak point of the luminance curve.