US 11,749,186 B2
Display device for correcting an image including a logo and driving method of display device
DongHyun Noh, Seoul (KR); Wonwoo Jang, Seoul (KR); and Kyoungho Lim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Mar. 30, 2022, as Appl. No. 17/708,485.
Claims priority of application No. 10-2021-0061595 (KR), filed on May 12, 2021.
Prior Publication US 2022/0366843 A1, Nov. 17, 2022
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2320/0257 (2013.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a correction area, in which a correction image including a logo image and a logo background image around the logo image is displayed; and
a panel driving block which receives an image signal and transmits a data signal to the display panel, and
wherein the panel driving block includes a luminance correction block which corrects a luminance of the correction image, and
wherein the luminance correction block includes:
a first correction block which divides the correction area into a plurality of sub-areas, based on a distance from the logo image and generates an area correction signal for correcting the luminance of the correction image displayed in each of the sub-areas, wherein the area correction signal includes a plurality of area correction values which are weights corresponding to the sub-areas, respectively, and each of the area correction values decreases as the distance of a corresponding sub area thereof from the logo image increases;
a second correction block which receives the image signal and the area correction signal, and generates a luminance correction signal for correcting the luminance of the correction image displayed in each of the sub-areas, based on a grayscale of the image signal and the area correction signal; and
a third correction block which corrects the luminance of the correction image, based on the image signal and the luminance correction signal.