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    Pixel compensation circuit
    1.
    发明授权
    Pixel compensation circuit 有权

    公开(公告)号：US11170706B1

    公开(公告)日：2021-11-09

    申请号：US17237794

    申请日：2021-04-22

    Applicant: AU OPTRONICS CORPORATION ,  National Cheng Kung University

    Inventor： Chih-Lung Lin ,  Jie-An Lin ,  Ming-Yang Deng ,  Chia-En Wu

    IPC: G09G3/32

    Abstract: A pixel compensation circuit including a light emitting diode, a drive unit, a control unit, a data write-in unit, a reset unit, and a pull-down unit is disclosed. The control unit is configured to control a voltage drop time of the first node according to a data voltage value received by the data write-in unit, so as to control a gray scale of the light emitting diode. The data write-in unit includes a first transistor, a second transistor, a third transistor and a capacitor. The first transistor is connected to a first voltage source and a second node. The second transistor is connected to the second node and a third node. The third transistor is connected to the third node and a data input source. The first capacitor is connected to the second node and a first reference voltage source.

    OPTICAL SENSOR CIRCUIT
    2.
    发明申请
    OPTICAL SENSOR CIRCUIT 审中-公开

    公开(公告)号：US20200158574A1

    公开(公告)日：2020-05-21

    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.

    LIQUID CRYSTAL PIXEL CIRCUIT OF LIQUID CRYSTAL DISPLAY PANEL AND DRIVING METHOD THEREOF
    5.
    发明申请
    LIQUID CRYSTAL PIXEL CIRCUIT OF LIQUID CRYSTAL DISPLAY PANEL AND DRIVING METHOD THEREOF 有权
    液晶显示面板的液晶像素电路及其驱动方法

    公开(公告)号：US20150277177A1

    公开(公告)日：2015-10-01

    申请号：US14480641

    申请日：2014-09-09

    Applicant: Au Optronics Corporation

    Inventor： Chih-Lung Lin ,  Chia-En Wu ,  Mao-Hsun Cheng ,  Bo-Shiang Tzeng ,  Ching-Huan Lin

    IPC: G02F1/1362 ,  G02F1/1368 ,  G09G3/36

    CPC classification number: G09G3/3648 ,  G09G2310/06 ,  G09G2320/0252

    Abstract: A liquid crystal (LC) pixel circuit of a LC display panel includes a first, a second, a third and a fourth switches, a LC capacitor and a storage capacitor. A first and a control terminals of the first switch respectively receive a common voltage and a first gate signal. A first and a control terminals of the second switch respectively receive a data voltage and a second gate signal. The storage capacitor and the LC capacitor electrically connect between second terminals of the first and second switches. A first and a control terminals of the third switch respectively receive the common voltage and a third gate signal. A first and a control terminals of the fourth switch respectively receive a set voltage and a fourth gate signal. Second terminals of the third and the fourth switches respectively connect to the second terminals of the second and the first switches.

    Abstract translation: LC显示面板的液晶（LC）像素电路包括第一，第二，第三和第四开关，LC电容器和存储电容器。 第一开关的第一和控制端分别接收公共电压和第一门信号。 第二开关的第一和控制端分别接收数据电压和第二门信号。 存储电容器和LC电容器在第一和第二开关的第二端子之间电连接。 第三开关的第一和控制端子分别接收公共电压和第三栅极信号。 第四开关的第一控制端子和控制端子分别接收设定电压和第四栅极信号。 第三开关和第四开关的第二端子分别连接到第二开关和第二开关的第二端子。

    Pixel circuit and display device having the same
    6.
    发明授权
    Pixel circuit and display device having the same 有权

    公开(公告)号：US11289013B2

    公开(公告)日：2022-03-29

    申请号：US17075066

    申请日：2020-10-20

    Applicant: AU Optronics Corporation

    Inventor： Chih-Lung Lin ,  Po-Cheng Lai ,  Ting-Ching Chu ,  Po-Chun Lai ,  Mao-Hsun Cheng

    IPC: G09G3/3233 ,  G09G3/32

    Abstract: A pixel circuit including a compensation circuit, a writing circuit, a light emitting element, and a power supplying circuit is provided. The compensation circuit comprises a first node, and provides a driving current to the light emitting element according to a voltage of the first node and a system high voltage. The writing circuit provides a data voltage to the compensation circuit according to a first control signal so that the compensation circuit sets the voltage of the first node. The power supplying circuit selectively couples the compensation circuit to the light emitting element, and provides the system high voltage and a system low voltage to the compensation circuit, in which the system low voltage is configured to reset the voltage of the first node. The first control signal and the second control signal are opposite to the first emission signal and the second emission signal, respectively.

    Shift register circuit and gate driver
    7.
    发明授权
    Shift register circuit and gate driver 有权

    公开(公告)号：US10964245B2

    公开(公告)日：2021-03-30

    申请号：US16653459

    申请日：2019-10-15

    Applicant: AU Optronics Corporation

    Inventor： Po-Cheng Lai ,  Mao-Hsun Cheng ,  Cheng-Han Huang ,  Yung-Chih Chen ,  Ching-Sheng Cheng ,  Chih-Lung Lin

    IPC: G11C19/00 ,  G09G3/20 ,  G11C19/28 ,  G09G3/36

    Abstract: A shift register circuit and a gate driver including the shift register circuit. The shift register circuit includes an input circuit, a drive circuit, a pull-down circuit, a regulator circuit and a pull-up circuit. The input circuit is configured to receive a first clock signal and is coupled to the first node. The driving circuit is configured to receive the first clock signal and a second clock signal. The input circuit is coupled to the first node. The pull-down circuit is configured to receive the voltage of the first node. The pull-down circuit is coupled to the first node and an output terminal. The pull-down circuit outputs the first voltage to the output terminal in response to the voltage of the first node.

    Pixel driving circuit and driving method thereof
    8.
    发明授权
    Pixel driving circuit and driving method thereof 有权

    公开(公告)号：US09799291B2

    公开(公告)日：2017-10-24

    申请号：US15172853

    申请日：2016-06-03

    Applicant: AU Optronics Corporation

    Inventor： Chia-Che Hung ,  Tokuro Ozawa ,  Chia-Ting Hsieh ,  Bo-Shiang Tzeng ,  Chia-Wei Kuo ,  Chih-Lung Lin

    IPC: G09G3/36

    CPC classification number: G09G3/3659 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0819 ,  G09G2310/0202 ,  G09G2310/061 ,  G09G2310/063

    Abstract: A pixel driving circuit includes a first capacitor, a data input unit, a liquid crystal capacitor, a control unit and a driving unit. The first capacitor has a first terminal and a second terminal, wherein the first terminal is configured for receiving a first reference voltage. The data input unit is configured for inputting a data signal to the second terminal of the first capacitor according to a first scanning signal. The liquid crystal capacitor has a first terminal and a second terminal. The first terminal receives a first operating signal. The control unit is configured to control a voltage of the second terminal of the liquid crystal capacitor according to a second scanning signal. The driving unit is configured to control the voltage of the second terminal of the liquid crystal capacitor in response to the data input unit is disabled by the first scanning signal.

    PIXEL CIRCUIT
    9.
    发明申请
    PIXEL CIRCUIT 有权

    公开(公告)号：US20210074195A1

    公开(公告)日：2021-03-11

    申请号：US16952199

    申请日：2020-11-19

    Applicant: AU Optronics Corporation

    Inventor： Chih-Lung Lin ,  Chin-Hsien Tseng ,  Po-Cheng Lai ,  Yu-Sheng Lin ,  Mao-Hsun Cheng

    IPC: G09G3/20

    Abstract: A pixel circuit includes a light emitting element, a first driver transistor, a second driver transistor, and a first compensation capacitor. A first terminal of the first driving transistor is configured to receive a power signal, and a second terminal of the first driving transistor is electrically coupled to the light emitting element. A first terminal of the second driving transistor receives the power signal, and a control terminal of the second driving transistor is electrically coupled to the light emitting element. The first compensation capacitance is electrically coupled to a control terminal of the first driving transistor and the second terminal of the second driving transistor, respectively.

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