公开(公告)号：US10923029B2

公开(公告)日：2021-02-16

申请号：US16355846

申请日：2019-03-18

Applicant: Au Optronics Corporation

Inventor： Yi-Chiung Chen ,  Mao-Hsun Cheng

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3266

Abstract: A pixel circuit including a light-emitting element, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor and a storage capacitor is provided. The third transistor is coupled to the second transistor. The fourth transistor is coupled to the second transistor. The storage capacitor is coupled between the first transistor and the fourth transistor. The fifth transistor is coupled to the fourth transistor. The sixth transistor is coupled to the fourth transistor. The seventh transistor is coupled to the fourth transistor and the light-emitting element. The eighth transistor is coupled to the first transistor.

公开(公告)号：US11289008B2

公开(公告)日：2022-03-29

申请号：US16734455

申请日：2020-01-06

Applicant: AU Optronics Corporation

Inventor： Yi-Chiung Chen ,  Mao-Hsun Cheng

IPC: G09G3/32 ,  G09G3/3233

Abstract: A pixel circuit is disclosed herein, which includes a first switch, a capacitor, a driving transistor, and a light-emitting diode (LED). The first switch outputs voltage data in response to a scan signal. A first terminal of the capacitor and the first switch are coupled to a node. A second terminal of the capacitor receives a reference signal. The driving transistor is coupled to the node, and configured to output current according to a voltage stored in the node. The LED is coupled to the driving transistor, and emits light according to the current. The reference voltage is different during different operation periods. The driving transistor outputs a first current according to the voltage data and the voltage difference, and outputs a second current according to the voltage data during different operation periods, such that the LED emits a first light and a second light during different operation periods.

公开(公告)号：US20190325824A1

公开(公告)日：2019-10-24

申请号：US16355846

申请日：2019-03-18

Applicant: Au Optronics Corporation

Inventor： Yi-Chiung Chen ,  Mao-Hsun Cheng

IPC: G09G3/3233 ,  G09G3/3266 ,  H01L27/32

Abstract: A pixel circuit including a light-emitting element, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor and a storage capacitor is provided. The third transistor is coupled to the second transistor. The fourth transistor is coupled to the second transistor. The storage capacitor is coupled between the first transistor and the fourth transistor. The fifth transistor is coupled to the fourth transistor. The sixth transistor is coupled to the fourth transistor. The seventh transistor is coupled to the fourth transistor and the light-emitting element. The eighth transistor is coupled to the first transistor.

公开(公告)号：US20200226974A1

公开(公告)日：2020-07-16

申请号：US16683505

申请日：2019-11-14

Applicant: AU OPTRONICS CORPORATION

Inventor： Mao-Hsun Cheng ,  Cheng-Han Huang ,  Mei-Sheng Ma ,  Yi-Chiung Chen ,  Hsiang-Sheng Chang ,  Po-Jung Wu ,  Yung-Chih Chen ,  Ching-Sheng Cheng

IPC: G09G3/32

Abstract: A pixel driving circuit includes a driving unit receiving a first control signal via a first control end, and the driving unit is biased according to the first control signal to provide a driving current to a light emitting element. One end of a capacitor is connected to a second control end of the driving unit, and the other end of the capacitor is connected to a first end or a second end of the driving unit. A compensation unit receives a second control signal via a first control end, and the compensation unit is biased according to the second control signal. A first switch unit receives a third control signal via a control end, and thereby the first switch unit is turned on. A second switch unit receives a fourth control signal via a control end, and thereby the second switch unit is turned on. A third switch unit receives a third control signal or a fourth control signal via a control end, and thereby the third switch uni