US 11,942,031 B2
Current limiting circuit, display device, and current limiting method
Manabu Fujiwara, Tokyo (JP)
Assigned to JOLED INC., Tokyo (JP)
Filed by JOLED INC., Tokyo (JP)
Filed on Nov. 17, 2022, as Appl. No. 17/989,386.
Claims priority of application No. 2022-010054 (JP), filed on Jan. 26, 2022.
Prior Publication US 2023/0237962 A1, Jul. 27, 2023
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2310/0286 (2013.01); G09G 2330/021 (2013.01); G09G 2330/025 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A current limiting circuit that receives a video signal for a display panel including pixels, and limits current consumption of the pixels, the current limiting circuit comprising:
a first gain calculation circuit that calculates a first gain for multiplying with the video signal, based on first power consumption that is power consumption of the pixels corresponding to the video signal;
a second gain calculation circuit that calculates a second gain for multiplying with the video signal, based on the first power consumption and a rate of change of the first power consumption;
a gain selection circuit that selects one of the first gain and the second gain as a gain by which the video signal is to be multiplied; and
a gain multiplication circuit that multiplies the video signal by the gain.