公开(公告)号：US20230078957A1

公开(公告)日：2023-03-16

申请号：US17891882

申请日：2022-08-19

申请人： Samsung Display Co., Ltd.

发明人： KYUNGEUN PARK ,  DONGHYUN HWANG ,  Dongkyu Lee

IPC分类号： G09G3/20

摘要： A data driver is disclosed that includes a first digital-to-analog converter, a second digital-to-analog converter, a third digital-to-analog converter, a first pseudo amplifier, a second pseudo amplifier, and a main amplifier. The first digital-to-analog converter includes a first resistor string including first resistors and a first decoder. The second digital-to-analog converter includes a second resistor string including second resistors and a second decoder, and is connected to the first digital-to-analog converter. The third digital-to-analog converter is connected to the second digital-to-analog converter. The first pseudo amplifier includes first and second driving transistors. The second pseudo amplifier includes third and fourth driving transistors. The main amplifier is connected to the first and second pseudo amplifiers, and is configured to generate a reference current. The second resistor string is connected between first and second nodes, and a first output node disposed between the first and second driving transistors is connected to the first node. A second output node disposed between the third and fourth driving transistors is connected to the second node.