公开(公告)号：US10937371B2

公开(公告)日：2021-03-02

申请号：US16414663

申请日：2019-05-16

Applicant: Samsung Display Co., Ltd.

Inventor： Bo Yong Chung ,  Dongwoo Kim ,  Yeonkyung Kim ,  Chong Chul Chai

IPC: G09G3/3266

Abstract: A scan driver includes circuit stages each including a first input part to transfer a signal of a first node to a first output part having a second node in response to a first clock signal, a second input part to transfer a carry signal to the first node in response to a second clock signal that is different from the first clock signal, a holding part to maintain a signal of the second node, the first output part to transfer a third clock signal that is different from the first and second clock signals to an output terminal in response to the signal of the second node, a second output part to transfer the first clock signal to the output terminal in response to a signal of a third node, and a simultaneous driving part to turn off the second output part in response to the third clock signal.

公开(公告)号：US12112704B2

公开(公告)日：2024-10-08

申请号：US18501031

申请日：2023-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： Yeonkyung Kim ,  Kwihyun Kim ,  Dongwoo Kim

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2330/021

Abstract: A pixel circuit is disclosed that includes first through sixth transistors, first and second capacitors, and a light emitting element. A gate electrode of the second transistor receives a first gate signal. A gate electrode of the third transistor receive a second gate signal. Gate electrodes of each of the fourth and fifth transistors receive a third gate signal. A gate electrode of the sixth transistor receives an emission signal. First electrodes of the first transistor and the first capacitor each receive a first power supply voltage. A cathode electrode of the light emitting element receives a second power supply voltage. A first electrode of the fourth transistor receives an initialization voltage.

公开(公告)号：US11114036B2

公开(公告)日：2021-09-07

申请号：US16434432

申请日：2019-06-07

Applicant: Samsung Display Co., Ltd.

Inventor： Boyoung Chung ,  Youngwan Seo ,  Dongwoo Kim ,  Yeonkyung Kim ,  Chong Chul Chai

IPC: G06F3/038 ,  G09G3/3266 ,  G09G3/3225

Abstract: A scan driver includes a plurality of circuit stages, each circuit stage including a first input part configured to transfer a carry signal to a first node in response to a first clock signal, a second input part configured to transfer the first clock signal to a second node in response to a signal of the first node, a first output part configured to transfer a third clock signal to an output terminal in response to a signal of the second node, a holding part configured to maintain a signal of a third node response to a second clock signal, and a second output part configured to transfer a signal of the third node to the output terminal in response to the second clock signal.