公开(公告)号：US11797125B2

公开(公告)日：2023-10-24

申请号：US17747085

申请日：2022-05-18

申请人： LX SEMICON CO., LTD.

发明人： Kwang Jun Lee ,  Woong Jin Oh ,  Yong Min Kim ,  Jae Woo Jeon

IPC分类号： G06F3/041 ,  G06F3/044

CPC分类号： G06F3/04166 ,  G06F3/044

摘要： Provided is a driving apparatus for the touch display device including: a signal generation circuit that generates a second image signal using an input first image signal and outputs the second image signal in a display period, and generates a common voltage signal and outputs the common voltage signal in a touch sensing period; and a dummy signal output determination circuit that determines whether to output a dummy signal using the second image signal, wherein when it is determined to output the dummy signal by the dummy signal output determination circuit, the signal generation circuit generates at least one dummy signal using the second image signal and the common voltage signal and outputs the at least one dummy signal in the display period.