公开(公告)号：US10810933B1

公开(公告)日：2020-10-20

申请号：US16505784

申请日：2019-07-09

Applicant: AU Optronics Corporation

Inventor： Chun-Feng Lin ,  Chuang-Cheng Yang ,  Ming-Hsien Lee ,  Yi-Cheng Lin ,  Wei-Chia Chiu

IPC: G09G3/30 ,  G09G3/32

Abstract: A control circuit includes a power supply switch unit and a reset switch unit. The power supply switch unit is electrically connected to a data line and a pixel circuit. When the data line has a data voltage, the power supply switch unit is turned on according to a power supply signal, so that the pixel circuit is charged by the data voltage. The reset switch unit is electrically connected to the pixel circuit. After the pixel circuit is charged by the data voltage, the reset switch unit is turned on according to the reset signal to reset a voltage of the pixel circuit to the reset voltage.

公开(公告)号：US11501696B2

公开(公告)日：2022-11-15

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：US11120736B2

公开(公告)日：2021-09-14

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：US10971045B2

公开(公告)日：2021-04-06

申请号：US16441018

申请日：2019-06-14

Applicant: Au Optronics Corporation

Inventor： Chun-Feng Lin ,  Chuang-Cheng Yang ,  Ming-Hsien Lee ,  Yi-Cheng Lin ,  Wei-Chia Chiu

IPC: G09G3/20

Abstract: A display apparatus includes a pixel array, a plurality of gate lines and a plurality of de-load lines. The pixel array includes a plurality of display rows, each of the display rows includes a plurality of pixel circuits, and each of the pixel circuits includes a first transistor and a second transistor coupled in series between a data line and a display pixel. A control end of the first transistor of each of the pixel circuits is coupled to one of the gate lines for receiving a gate driving signal. A control end of the second transistor of each of the pixel circuits is coupled to one of the de-load lines for receiving a de-loading signal. Where an enable time period of the de-loading signal received by each of the pixel circuits covers an enable time period of the gate driving signal received by each of the pixel circuits.

公开(公告)号：US20200211433A1

公开(公告)日：2020-07-02

申请号：US16441018

申请日：2019-06-14

Applicant: Au Optronics Corporation

Inventor： Chun-Feng Lin ,  Chuang-Cheng Yang ,  Ming-Hsien Lee ,  Yi-Cheng Lin ,  Wei-Chia Chiu

IPC: G09G3/20

Abstract: A display apparatus includes a pixel array, a plurality of gate lines and a plurality of de-load lines. The pixel array includes a plurality of display rows, each of the display rows includes a plurality of pixel circuits, and each of the pixel circuits includes a first transistor and a second transistor coupled in series between a data line and a display pixel. A control end of the first transistor of each of the pixel circuits is coupled to one of the gate lines for receiving a gate driving signal. A control end of the second transistor of each of the pixel circuits is coupled to one of the de-load lines for receiving a de-loading signal. Where an enable time period of the de-loading signal received by each of the pixel circuits covers an enable time period of the gate driving signal received by each of the pixel circuits.