Patent ID: 11887531
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A display device comprising:
a display panel comprising a first display area and a second display area, and which displays a first image through the first and second display areas in a first mode, and displays a second image through the first display area in a second mode;
a panel driver, which drives the display panel in the first mode or the second mode; and
a driving controller, which controls a drive of the panel driver, the driving controller comprising:
a compensation determination block, which is activated after the second mode is switched to the first mode and generates a compensation value based on a final afterimage component calculated using an afterimage algorithm obtained by a combination of a first afterimage calculation equation and a second afterimage calculation equation; and
a data compensation block, which receives a second image signal corresponding to the second display area and reflects the compensation value to the second image signal to generate a second compensation image signal,
wherein the afterimage algorithm is defined by following Equation:

f(x)=f1(x)+f2(x),, where f1(x) denotes the afterimage algorithm, f1(x) denotes the first afterimage calculation equation, and f2(x) denotes the second afterimage calculation equation,, wherein the first afterimage calculation equation f1(x) is defined by following Equation:

f1(x)=aebx,

the second afterimage calculation equation f2(x) is defined by one of following Equations:

f2(x)=Rb+cx+d, 

f2(x)=cx+d, and

f2(x)=cedx,

where Rb denotes a ratio obtained by dividing a luminance of the target image by a self-luminance, and each of a, b, c and d is a constant.