公开(公告)号：US20210295775A1

公开(公告)日：2021-09-23

申请号：US16820805

申请日：2020-03-17

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chieh-An LIN ,  Tzu-Chien TZENG

IPC: G09G3/3258

Abstract: A differential input circuit and a driving circuit including the same are provided. The differential input circuit transforms an analog voltage signal corresponding to a sensing line on an OLED panel to a pair of differential input signals being output to a gain amplifier. The differential input circuit includes a sampling circuit and a scaling circuit. The sampling circuit receives the analog voltage signal and a reference voltage through a first scaling path and a second scaling path, respectively. The scaling circuit includes a first scaling path and a second scaling path. The first scaling path and the second scaling path collectively generate the pair of differential input signals, based on a first shift voltage, a first scaled voltage, a second shift voltage, and a second scaled voltage. The first shift voltage is less than the second shift voltage.