US 11,817,067 B2
Display driving circuit
Unki Park, Suwon-si (KR); Minsik Kim, Seongnam-si (KR); Hyeonsu Park, Seoul (KR); Jonghyuk Lee, Suwon-si (KR); Hyunwook Lim, Seoul (KR); and Woohyuk Jang, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 2, 2021, as Appl. No. 17/221,461.
Claims priority of application No. 10-2020-0045439 (KR), filed on Apr. 14, 2020; and application No. 10-2020-0088464 (KR), filed on Jul. 16, 2020.
Prior Publication US 2021/0319770 A1, Oct. 14, 2021
Int. Cl. G09G 5/393 (2006.01); G09G 5/395 (2006.01); G04G 9/00 (2006.01)
CPC G09G 5/393 (2013.01) [G04G 9/0082 (2013.01); G09G 5/395 (2013.01); G09G 2330/023 (2013.01); G09G 2360/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display driving circuit for driving a display panel, the display driving circuit comprising:
a first memory configured to store main image data received from outside of the display driving circuit, wherein the main image data corresponds to a background image;
a second memory configured to store first additional image data in a normal mode, and to store second additional image data in an Always On Display (AOD) mode having lower power consumption than the normal mode;
a normal mode controller configured to operate in the normal mode according to the first additional image data stored in the second memory; and
an AOD mode controller configured to operate in the AOD mode according to the main image data stored in the first memory and the second additional image data stored in the second memory,
wherein the main image data is stored in a compressed form in the first memory, and is decompressed by the display driving circuit before being used, and wherein at least one of the first additional image data and the second additional image data is stored in an uncompressed form in the second memory, and is not decompressed by the display driving circuit before being used.