US 12,327,514 B2
Screen saver controller, display device including the same and method of operating a display device including the same
Hee Sook Park, Suwon-si (KR); and Ki Hyun Pyun, Gwangmyeong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jan. 12, 2024, as Appl. No. 18/411,973.
Application 18/411,973 is a continuation of application No. 17/386,700, filed on Jul. 28, 2021, granted, now 11,875,732.
Claims priority of application No. 10-2020-0136183 (KR), filed on Oct. 20, 2020.
Prior Publication US 2024/0153437 A1, May 9, 2024
Int. Cl. G09G 3/22 (2006.01)
CPC G09G 3/22 (2013.01) [G09G 2300/0439 (2013.01); G09G 2330/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A screen saver controller comprising:
a first logic circuit for generating load data of each of a plurality of panel blocks included in a display panel based on input image data;
a second logic circuit for generating life data of each of the panel blocks based on a deterioration stress value accumulated in the display panel;
a third logic circuit for receiving the load data and the life data and generating operation data including start time gain data and minimum luminance gain data based on the load data and the life data, the start time gain data indicating a start time of a screen saver mode, the minimum luminance gain data indicating a minimum luminance of the screen saver mode; and
a fourth logic circuit for receiving the input image data and the operation data and generating screen saver data based on the input image data and the operation data, wherein the fourth logic circuit maintains the luminance of the display panel until the start time and then begins to adjust the luminance at the start time based on the screen saver data when operating in the screen saver mode,
wherein the third logic circuit changes the start time based on the load data and the life data with respect to a reference start time and changes the minimum luminance based on the load data and the life data with respect to a reference minimum luminance.