US 11,967,287 B2
Column driver integrated circuit for low-power driving and devices including the same
Donghan Lee, Busan (KR); and Yong-Hun Kim, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Sep. 22, 2022, as Appl. No. 17/950,599.
Claims priority of application No. 10-2021-0134302 (KR), filed on Oct. 8, 2021; and application No. 10-2022-0047805 (KR), filed on Apr. 18, 2022.
Prior Publication US 2023/0111814 A1, Apr. 13, 2023
Int. Cl. G09G 3/3275 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/3275 (2013.01) [G09G 3/2007 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0291 (2013.01); G09G 2330/023 (2013.01); G09G 2330/028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A column driver integrated circuit (IC) which drives a first group of pixel lines connected to a first group of pixels included in a display panel, and a second group of pixel lines connected to a second group of pixels included in the display panel, the column driver IC comprising:
a master gray scale voltage generation circuit configured to:
divide a reference voltage to generate tap voltages, and
generate a first low-power mode gray scale voltage based on at least one of the tap voltages;
a plurality of first source amplifiers configured to drive the first group of pixel lines based on gray scale voltages corresponding to the tap voltages;
a first low-power mode amplifier separated from the plurality of first source amplifiers and configured to drive the first group of pixel lines based on only the first low-power mode gray scale voltage; and
a first pin configured to provide the first low-power mode gray scale voltage to an outside of the column driver IC.