公开(公告)号：US20210134211A1

公开(公告)日：2021-05-06

申请号：US16920463

申请日：2020-07-03

Applicant: AU Optronics Corporation

Inventor： Chia-En WU ,  Ming-Hsien LEE ,  Wei-Chia CHIU ,  Kuan-Yu CHEN

IPC: G09G3/32 ,  G09G3/20

Abstract: A pixel circuit including a driving transistor, a light emission element, a compensation circuit, a storage capacitor, and a writing circuit is provided. The light emission control circuit is configured to selectively conduct the light emission element to the driving transistor. The compensation circuit is coupled with the light emission control circuit and a control terminal of the driving transistor, and is configured to form a diode-connected structure with the driving transistor. The storage capacitor includes a first terminal and a second terminal. The first terminal of the storage capacitor is coupled with the control terminal of the driving transistor, and the light emission control circuit is configured to selectively conduct the second terminal of the storage capacitor to a first power terminal. The writing circuit is configured to provide different voltages to the first terminal of the storage capacitor and the second terminal of the storage capacitor.

公开(公告)号：US20220036809A1

公开(公告)日：2022-02-03

申请号：US17320413

申请日：2021-05-14

Applicant: AU Optronics Corporation

Inventor： Chia-En WU ,  Ming-Hsien LEE ,  Wei-Chia CHIU ,  Kuan-Yu CHEN ,  Chia-Yen LIN

IPC: G09G3/32

Abstract: A pixel driving device includes a capacitance, a reset circuit, a compensation circuit, a driving transistor and a first transistor. Reset circuit and compensation circuit are coupled to a first end and a second end of capacitance. First transistor is coupled between second end of driving transistor and second end of capacitance. Reset circuit resets first end of capacitance at a power supply voltage and reset second end of capacitance at a reference voltage according to a first sweep signal respectively. Compensation circuit writes a data voltage into first end of capacitance via driving transistor and second end of capacitance is maintained at reference voltage according to a second sweep signal. First transistor generates a driving voltage difference between first end and second end of capacitance according to a control signal. Driving transistor outputs a current to a luminous element according to driving voltage difference.

公开(公告)号：US20200158567A1

公开(公告)日：2020-05-21

申请号：US16590961

申请日：2019-10-02

Applicant: AU Optronics Corporation ,  NATIONAL CHENG KUNG UNIVERSITY

Inventor： Chih-Lung LIN ,  Fu-Hsing CHEN ,  Chia-Lun LEE ,  Chia-En WU ,  Jian-Shen YU

IPC: G01J1/46 ,  G01J1/04 ,  G01J1/42

Abstract: An optical sensing circuit includes a first light sensor, a second light sensor, a third light sensor, a capacitor, and a sampling circuit. The first light sensor, the second light sensor, and the third light sensor are respectively covered by a first color filter, a second color filter, and a third color filter. The first light sensor is coupled to the capacitor, the sampling circuit, and the third light sensor. The second light sensor is coupled to the first light sensor and is configured to receive a first sensing signal. The third light sensor is coupled between the first light sensor and a voltage source.

公开(公告)号：US20170276541A1

公开(公告)日：2017-09-28

申请号：US15450583

申请日：2017-03-06

Applicant: AU Optronics Corporation

Inventor： Chih-Lung LIN ,  Chia-En WU ,  Po-Syun CHEN ,  Fu-Hsing CHEN ,  Ming-Xun WANG ,  Ching-En LEE ,  Po-Cheng LAI ,  Jian-Shen YU

IPC: G01J1/02 ,  G01J1/04 ,  G01J1/46

CPC classification number: G01J1/0214 ,  G01J1/0488 ,  G01J1/46 ,  G01J2001/4473 ,  G06F3/0304 ,  G06F3/042

Abstract: An optical sensing circuit has a plurality of optical sensing units arranged so that the optical sensing circuit is ambient light insensitive or sensitive to light within certain spectrum. The sensitive spectra corresponding to the plurality of optical sensing units are different from one another.