公开(公告)号：US20240185814A1

公开(公告)日：2024-06-06

申请号：US18526004

申请日：2023-12-01

申请人： LX SEMICON CO., LTD.

发明人： Woong Jin OH ,  Yong Min KIM ,  Kwang Jun LEE

IPC分类号： G09G3/36 ,  G09G3/3275

CPC分类号： G09G3/3685 ,  G09G3/3275 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2370/10

摘要： Disclosed is a source driver IC including a first latch circuit configured to sample image data, a second latch circuit configured to latch and output the sampled image data at a rising edge of a latch enable signal, a latch enable signal output control circuit configured to output the latch enable signal at a first timing or second timing according to a timing setting signal, a digital-to-analog converter configured to convert the image data into an analog data voltage, an output buffer circuit configured to amplify and output the data voltage in synchronization with the latch enable signal, and a Mux circuit configured to be turned on during a period of a low level of a source output enable signal to output the data voltage to each channel.

公开(公告)号：US20230071380A1

公开(公告)日：2023-03-09

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

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.