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：US20220276097A1

公开(公告)日：2022-09-01

申请号：US17742384

申请日：2022-05-11

Applicant: Au Optronics Corporation ,  National Cheng-Kung University

Inventor： Chih-Lung Lin ,  Chia-En Wu ,  Chia-Lun Lee ,  Jui-Hung Chang ,  Jian-Shen Yu

IPC: G01J3/51 ,  G01J3/50

Abstract: An optical sensor circuit is provided. In the optical sensor circuit, an output stage circuit transmits a voltage of first and second node to the output line according to a first driving signal. A first sensor is configured to generate a first photocurrent according to a first color light that senses an ambient light, and generate a second photocurrent according to a second color light. A second sensor is configured to generate a third photocurrent according to a third color light, and generate a fourth photocurrent according to the second color light. In a sensing phase, when the first sensor senses the first color light, and the second sensor senses the third color light, the first sensor adjusts a voltage level of the voltage according to the first photocurrent, and the second sensor adjusts the voltage level of the voltage according to the third photocurrent.

公开(公告)号：US11371885B2

公开(公告)日：2022-06-28

申请号：US16594085

申请日：2019-10-07

Applicant: Au Optronics Corporation ,  National Cheng-Kung University

Inventor： Chih-Lung Lin ,  Chia-En Wu ,  Chia-Lun Lee ,  Jui-Hung Chang ,  Jian-Shen Yu

IPC: G01J3/51 ,  G01J3/50

Abstract: An optical sensor circuit is provided. In the optical sensor circuit, an output stage circuit transmits a voltage of first and second node to the output line according to a first driving signal. A first sensor is configured to generate a first photocurrent according to a first color light that senses an ambient light, and generate a second photocurrent according to a second color light. A second sensor is configured to generate a third photocurrent according to a third color light, and generate a fourth photocurrent according to the second color light. In a sensing phase, when the first sensor senses the first color light, and the second sensor senses the third color light, the first sensor adjusts a voltage level of the voltage according to the first photocurrent, and the second sensor adjusts the voltage level of the voltage according to the third photocurrent.

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：US20170031219A1

公开(公告)日：2017-02-02

申请号：US15083862

申请日：2016-03-29

Applicant: AU OPTRONICS CORPORATION

Inventor： Chih-Lung Lin ,  Jian-Shen Yu ,  Chia-En Wu ,  Chia-Che Hung

IPC: G02F1/1362 ,  G02F1/1368

CPC classification number: G09G3/3648 ,  G09G2300/0491 ,  G09G2300/0833

Abstract: A liquid-crystal pixel unit includes a storage capacitor, a liquid-crystal capacitor, a data writing circuit, and a source-follower type output circuit. The storage capacitor includes a first electrode and a second electrode. The second electrode is configured to receive a first reference voltage. The liquid-crystal capacitor includes a third electrode and a fourth electrode. The fourth electrode is configured to receive a second reference voltage. The data writing circuit is electrically connected to the first electrode and the third electrode. The data writing circuit is controlled by a control signal to charge a data voltage into the storage capacitor and the liquid-crystal capacitor. The source-follower type output circuit includes an input terminal and an output terminal. The input terminal is electrically connected to the first electrode. The output terminal is electrically connected to the third electrode.

Abstract translation: 液晶像素单元包括存储电容器，液晶电容器，数据写入电路和源极跟随器型输出电路。 存储电容器包括第一电极和第二电极。 第二电极被配置为接收第一参考电压。 液晶电容器包括第三电极和第四电极。 第四电极被配置为接收第二参考电压。 数据写入电路电连接到第一电极和第三电极。 数据写入电路由控制信号控制，以将数据电压充电到存储电容器和液晶电容器中。 源极跟随器型输出电路包括输入端子和输出端子。 输入端子电连接到第一电极。 输出端子电连接到第三电极。