US 12,333,985 B2
Compensation method for a pixel circuit and display panel
Tao Bi, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
Filed on Dec. 31, 2023, as Appl. No. 18/401,527.
Claims priority of application No. 202310545136.X (CN), filed on May 15, 2023.
Prior Publication US 2024/0386827 A1, Nov. 21, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/12 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2007 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0251 (2013.01); G09G 2310/0262 (2013.01); G09G 2320/0233 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A compensation method for a pixel circuit, comprising steps of:
obtaining a nonlinear function of the pixel circuit, wherein the nonlinear function is a relationship curve between a voltage transmission loss ratio and a voltage of a data signal, the voltage transmission loss ratio is a ratio of a second gate-source voltage difference of a driving transistor in the pixel circuit in a light-emitting phase to a first gate-source voltage difference of the driving transistor in a writing phase;
converting the nonlinear function into a corresponding linear function which is a relationship curve between the first gate-source voltage difference and the second gate-source voltage difference;
obtaining a compensated first gate-source voltage difference according to the linear function and the second gate-source voltage difference;
wherein the step of converting the nonlinear function into the corresponding linear function which is the relationship curve between the first gate-source voltage difference and the second gate-source voltage difference comprises steps of:
setting the voltage transmission loss ratio, the first gate-source voltage difference and the second gate-source voltage difference as Efficiency, Vgs@write and Vgs@emission, respectively;
converting the nonlinear function into a following intermediate relationship:
Efficiency*Vgs@write=Vgs@emission.