公开(公告)号：US11900865B2

公开(公告)日：2024-02-13

申请号：US18056406

申请日：2022-11-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yongsik Kwak ,  Sunkwon Kim ,  Yongil Kwon ,  Uijong Song ,  Moonsuk Jeong ,  Youngkil Choi

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G2300/0828 ,  G09G2300/0852 ,  G09G2310/0291 ,  G09G2330/021

Abstract: A light-emitting diode (LED) driving circuit for driving an LED channel including a plurality of LED elements includes a switch-capacitor amplifier circuit configured to sample received input current and amplify an input voltage corresponding to the input current, a replica circuit configured to connect to the switch-capacitor amplifier circuit in a first period to define a first feedback loop, and an output circuit configured to connect to the switch-capacitor amplifier in a second period to define a second feedback loop. The second period is after the first period, and the output circuit is configured to generate output current according to an output voltage of the switch-capacitor amplifier circuit and provide the output current to the LED.