US 12,283,252 B2
Display device and method of driving display device
Tae Seok Ha, Hwaseong-si (KR); Koung Soo Kim, Suwon-si (KR); Kyu Jin Park, Cheonan-si (KR); Sung Jae Park, Seongnam-si (KR); Seung Woon Shin, Asan-si (KR); and Woon Rok Jang, Cheonan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Mar. 8, 2024, as Appl. No. 18/599,524.
Application 18/599,524 is a continuation of application No. 17/493,240, filed on Oct. 4, 2021, granted, now 11,942,045.
Claims priority of application No. 10-2020-0135532 (KR), filed on Oct. 19, 2020.
Prior Publication US 2024/0212632 A1, Jun. 27, 2024
Int. Cl. G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2300/0842 (2013.01); G09G 2310/061 (2013.01); G09G 2310/08 (2013.01); G09G 2330/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel configured to display an image based on image data;
a display panel driver configured to drive the display panel; and
a power supply voltage generation circuit configured to generate a plurality of panel driving voltages including a sensing initialization voltage to be applied to an anode of a light emitting element included in a pixel of the display panel,
wherein the power supply voltage generation circuit changes a voltage level of the sensing initialization voltage as a frame rate at which the display panel is driven changes in a variable frame mode, and
wherein the power supply voltage generation circuit generates the sensing initialization voltage having a first voltage level in a period in which the display panel is driven at a first frame rate and generates the sensing initialization voltage having a second voltage level different from the first voltage level in a period in which the display panel is driven at a second frame rate that is higher than the first frame rate, wherein the sensing initialization voltage is constant with the first voltage level throughout the period in which the display panel is driven at the first frame rate, wherein the sensing initialization voltage remains different from the first voltage level during the period in which the display panel is driven at the second frame rate.