Display device with connection board and method of testing pad contact state thereof

    公开(公告)号:US11094237B2

    公开(公告)日:2021-08-17

    申请号:US16847663

    申请日:2020-04-14

    Abstract: A display device includes a display panel including first to fourth panel pads and a connection board including first to fourth connection board pads coupled to the first to fourth pads, respectively. The first and second panel pads are electrically connected to each other, and the third and fourth panel pads are electrically connected to each other. The connection board includes a driving circuit which generates a first test result signal based on a first panel test signal transmitted to the first connection board pad and a first panel feedback signal received from the second connection board pad, generates a second test result signal based on a second panel test signal transmitted to the third connection board pad and a second panel feedback signal received from the fourth connection board pad, and sequentially outputs the first and second test result signals as a test result signal.

    LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF
    2.
    发明申请
    LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF 有权
    液晶显示装置及其驱动方法

    公开(公告)号:US20160086561A1

    公开(公告)日:2016-03-24

    申请号:US14728383

    申请日:2015-06-02

    CPC classification number: G09G3/3655 G09G3/3696 G09G2310/08 G09G2320/0693

    Abstract: A liquid crystal display device, including a display panel including data lines and gate lines intersecting the data lines, a gate driver configured to sequentially apply a scan signal to the gate lines, a data driver configured to apply data voltages corresponding to each gate lines to the data lines, a timing controller configured to control the gate driver and the data driver, a power source supply circuit configured to supply a positive power source and a negative power source, a common voltage feedback circuit configured to receive the positive power source and the negative power source from the power source supply circuit, receive a reference voltage and a common voltage from the display panel, and output an amplified feedback signal corresponding to a voltage level difference between the reference voltage and the common voltage.

    Abstract translation: 一种液晶显示装置,包括包括与数据线交叉的数据线和栅极线的显示面板,配置成向扫描线顺序施加扫描信号的栅极驱动器,配置为将对应于每条栅极线的数据电压施加到的数据驱动器 数据线,被配置为控制栅极驱动器和数据驱动器的定时控制器,被配置为提供正电源和负电源的电源供给电路,配置成接收正电源的公共电压反馈电路和 来自电源电路的负电源,从显示面板接受参考电压和公共电压,并输出对应于参考电压和公共电压之间的电压电平差的放大反馈信号。

    Display device and driving method thereof
    4.
    发明授权
    Display device and driving method thereof 有权
    显示装置及其驱动方法

    公开(公告)号:US09449565B2

    公开(公告)日:2016-09-20

    申请号:US14449874

    申请日:2014-08-01

    CPC classification number: G09G3/3611 G09G2310/08 G09G2330/04

    Abstract: A display device includes: a plurality of pixels; a scan driver configured to apply a scan signal to a plurality of scan lines connected to the plurality of pixels; a data driver configured to apply a gray voltage to a plurality of data lines connected to the plurality of pixels; a signal controller configured to transmit a scan control signal for controlling operating of the scan driver to the scan driver, and configured to transmit a data control signal for controlling operating of the data driver to the data driver; a power supply configured to supply a power voltage for generation of the scan signal to the scan driver; and a short detector configured to detect a voltage level of the power voltage and generate an enable signal in response to the detection.

    Abstract translation: 显示装置包括:多个像素; 扫描驱动器,被配置为向连接到所述多个像素的多条扫描线施加扫描信号; 配置为向连接到所述多个像素的多条数据线施加灰度电压的数据驱动器; 信号控制器,被配置为发送用于控制扫描驱动器的操作到扫描驱动器的扫描控制信号,并且被配置为发送用于控制数据驱动器的操作的数据控制信号到数据驱动器; 电源,被配置为向扫描驱动器提供用于产生扫描信号的电源电压; 以及短检测器,被配置为检测电源电压的电压电平并响应于检测而产生使能信号。

    Display apparatus and operation method thereof

    公开(公告)号:US09824652B2

    公开(公告)日:2017-11-21

    申请号:US14462064

    申请日:2014-08-18

    CPC classification number: G09G3/3614 G09G3/3696 G09G2310/08 G09G2320/0209

    Abstract: A display apparatus includes: a display panel which displays an image; a data driver which supplies a data voltage to the display panel in response to a polarity control signal, where the polarity control signal controls a polarity of the data voltage; a timing controller which outputs a polarity signal corresponding to a polarity of the data voltage; and a polarity converter which receives a common voltage from a common electrode of the display panel and the polarity signal from the timing controller, where the polarity converter outputs the polarity control signal to the data driver in response to a difference in voltage level between the common voltage from the common electrode and the polarity signal from the timing controller.

    Display device including gate line driver and driving method thereof
    7.
    发明授权
    Display device including gate line driver and driving method thereof 有权
    显示装置,包括栅线驱动器及其驱动方法

    公开(公告)号:US09449545B2

    公开(公告)日:2016-09-20

    申请号:US14161521

    申请日:2014-01-22

    Abstract: A method of reducing a time for switching a gate line driving signal of display device having plural gate lines from a level that is less than a full gate-on level to the gate-on level is disclosed. The method may include: during a gate line pre-charging period of a respective gate line, causing the gate line driving signal to be at the full gate-on level; during a corresponding gate line main-charging period that follows the pre-charging period, causing the gate line driving signal of to be at the full gate-on level; and during an interposed period that is interposed between the gate line pre-charging period and its corresponding gate line main-charging period, causing the gate line driving signal to be at an intermediate level that is between the full gate-on level and an opposed gate-off level.

    Abstract translation: 公开了一种减少将具有多个栅极线的显示装置的栅极线驱动信号从小于全栅极导通电平的电平切换到栅极导通电平的方法。 该方法可以包括:在相应栅极线的栅极线预充电周期期间,使栅极线驱动信号处于完全栅极导通电平; 在预充电周期之后的相应的栅极线主充电期间,使栅极线驱动信号处于全栅极导通电平; 并且在插入在栅极线预充电周期与其对应的栅极线主充电周期之间的插入时段期间,使栅极线驱动信号处于处于完全栅极导通电平之间的中间电平, 关门水平

    Liquid crystal display device and driving method thereof

    公开(公告)号:US09978326B2

    公开(公告)日:2018-05-22

    申请号:US14728383

    申请日:2015-06-02

    CPC classification number: G09G3/3655 G09G3/3696 G09G2310/08 G09G2320/0693

    Abstract: A liquid crystal display device, including a display panel including data lines and gate lines intersecting the data lines, a gate driver configured to sequentially apply a scan signal to the gate lines, a data driver configured to apply data voltages corresponding to each gate lines to the data lines, a timing controller configured to control the gate driver and the data driver, a power source supply circuit configured to supply a positive power source and a negative power source, a common voltage feedback circuit configured to receive the positive power source and the negative power source from the power source supply circuit, receive a reference voltage and a common voltage from the display panel, and output an amplified feedback signal corresponding to a voltage level difference between the reference voltage and the common voltage.

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