US 12,333,978 B2
Method for driving display panel, and display apparatus
Chenguang Sun, Wuhan (CN); Xingyao Zhou, Wuhan (CN); Yana Gao, Wuhan (CN); Shuai Yang, Wuhan (CN); Mengmeng Zhang, Wuhan (CN); and Jian Kuang, Wuhan (CN)
Assigned to WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan (CN); and Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed by WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan (CN); and Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed on Jan. 17, 2024, as Appl. No. 18/414,721.
Claims priority of application No. 202310738980.4 (CN), filed on Jun. 20, 2023.
Prior Publication US 2024/0161671 A1, May 16, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/3233 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/20 (2013.01) [G09G 3/3233 (2013.01); G09G 3/3291 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/064 (2013.01); G09G 2330/021 (2013.01); G09G 2360/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for driving a display panel, wherein the display panel has a low-frequency driving mode where a keeping phase is arranged between two active phases;
wherein the method comprises:
in the low-frequency driving mode, providing a light-emitting control signal with a duty cycle of a % to a pixel circuit during one of the two active phases, the duty cycle representing a proportion of a width of an active level to a pulse width in the light-emitting control signal; and
performing at least one first switch and a second switch on the light-emitting control signal during the keeping phase,
wherein the at least one first switch is performed before the second switch; panel brightness when one of the at least one first switch is performed is higher than panel brightness when the second switch is performed; the duty cycle of the light-emitting control signal is b % after the second switch is performed, where a % and b % refer to lengths of the duty cycles, a and b are positive numbers, and b>a; and a total duration of at least one active level of the light-emitting control signal within one frame period after one of the at least one first switch is performed is between a total duration of at least one active level of the light-emitting control signal with the duty cycle of a % within one frame period and a total duration of at least one active level of the light-emitting control signal with the duty cycle of b % within one frame period.