US 12,260,803 B2
Data driving device
Da Sol Won, Daejeon (KR); Kwang Myung Kang, Daejeon (KR); Yong Min Kim, Daejeon (KR); Dong Keun Song, Daejeon (KR); Jung Min Choi, Daejeon (KR); and Seon Ho Hong, Daejeon (KR)
Assigned to LX SEMICON CO., LTD., Daejeon (KR)
Filed by LX SEMICON CO., LTD., Daejeon (KR)
Filed on Nov. 17, 2023, as Appl. No. 18/512,345.
Claims priority of application No. 10-2022-0122510 (KR), filed on Sep. 27, 2022.
Prior Publication US 2024/0105099 A1, Mar. 28, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/00 (2006.01)
CPC G09G 3/2092 (2013.01) [G09G 3/007 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0291 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A data driving device, comprising:
a first channel circuit comprising a first digital to analog converter (DAC) configured to perform digital-to-analog conversion using a plurality of first switches, and configured to drive a first pixel with a first data voltage that amplifies an output of the first DAC; and
a second channel circuit configured to perform digital-analog conversion using a plurality of second switches and drive a second pixel with a second data voltage that amplifies an output of a second DAC,
wherein in the second DAC, the plurality of second switches are disposed so that the number of the plurality of second switches turned on for one digital signal corresponding to one grayscale value is different from the number of the plurality of first switches turned on in the first DAC.