US 12,014,680 B2
Display device and driving method thereof
Kihyun Pyun, Gwangmyeong-si (KR); and Hyunjoo Seo, Changwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Feb. 17, 2023, as Appl. No. 18/111,234.
Claims priority of application No. 10-2022-0030655 (KR), filed on Mar. 11, 2022.
Prior Publication US 2023/0290303 A1, Sep. 14, 2023
Int. Cl. G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2300/0828 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel which is driven in a mode selected from among a plurality of modes including different luminance values, respectively;
a voltage generator which generates a driving voltage;
a resistor connected to an output terminal of the voltage generator from which the driving voltage is output;
a current sensing unit connected in parallel to the resistor, wherein the current sensing unit measures a voltage value across both ends of the resistor, and calculates a driving current value using a resistance value of the resistor and a measured voltage value; and
a maximum current calculating unit which calculates a maximum measured current value corresponding to a luminance value of a selected mode, and outputs a selection signal corresponding to the maximum measured current value, and
wherein the current sensing unit sets a maximum measured voltage value corresponding to the maximum measured current value in response to the selection signal.