US 12,170,049 B2
Gamma voltage generation circuit and display device including the same
Se Byung Chae, Yongin-si (KR); Su Bin Kim, Yongin-si (KR); and Jin Young Jeon, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 10, 2023, as Appl. No. 18/232,573.
Application 18/232,573 is a continuation of application No. 17/958,125, filed on Sep. 30, 2022.
Application 18/232,573 is a continuation of application No. 17/519,921, filed on Nov. 5, 2021, granted, now 11,462,146, issued on Oct. 4, 2022.
Claims priority of application No. 10-2021-0002883 (KR), filed on Jan. 8, 2021.
Prior Publication US 2023/0387472 A1, Nov. 30, 2023
Int. Cl. H01M 10/0585 (2010.01); G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2007 (2013.01) [G09G 3/32 (2013.01); H01M 10/0585 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/0297 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0673 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A gamma voltage generation circuit comprising:
a reference voltage generator including a first reference voltage generation circuit which generates a first reference voltage based on a first source voltage and a second reference voltage generation circuit which generates a second reference voltage based on the first source voltage;
a first reference voltage corrector which generates a first corrected reference voltage by correcting the first reference voltage using a ground voltage and an external power voltage provided from an outside;
a second reference voltage corrector which generates a second corrected reference voltage by correcting the second reference voltage using a target voltage and the external power voltage; and
a gamma voltage output unit which generates a plurality of gamma voltages by dividing the first and second corrected reference voltages,
wherein the first reference voltage corrector sets the target voltage based on the first reference voltage and a ground voltage.