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    LEVEL SHIFTER AND DISPLAY DEVICE INCLUDING THE SAME
    3.
    发明公开
    LEVEL SHIFTER AND DISPLAY DEVICE INCLUDING THE SAME 审中-公开

    公开(公告)号：US20240204781A1

    公开(公告)日：2024-06-20

    申请号：US18455718

    申请日：2023-08-25

    申请人： LG DISPLAY CO., LTD.

    发明人： Hoon JANG ,  Jun O HUR ,  Dong Ju KIM

    IPC分类号： H03K19/0185 ,  G09G3/3233

    CPC分类号： H03K19/01855 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2330/06 ,  G11C19/28

    摘要： A level shifter includes a first power input terminal to which a first gate voltage may be applied; a second power input terminal to which a second gate voltage may be applied; a third power input terminal to which a third gate voltage may be applied; an output terminal; a first switch element configured to electrically connect the first power input terminal to the output terminal in response to a voltage of on-intervals of a first control signal; a second switch element configured to electrically connect the second power input terminal to the output terminal in response to a voltage of on-intervals of a second control signal; and a third switch element configured to electrically connect the third power input terminal to the output terminal in response to a voltage of on-intervals of a third control signal.

    DISPLAY DEVICE
    5.
    发明公开
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230306895A1

    公开(公告)日：2023-09-28

    申请号：US18201011

    申请日：2023-05-23

    申请人： LG Display Co., Ltd.

    发明人： Hoon JANG ,  Sang-Uk LEE ,  Taehwa PARK ,  SoonDong CHO ,  Wonyong JANG

    IPC分类号： G09G3/20

    CPC分类号： G09G3/2096 ,  G09G2330/021 ,  G09G2310/0297 ,  G09G2360/10 ,  G09G2310/0291

    摘要： A power supply including a first converter configured to convert an input voltage into a first output voltage; a second converter configured to convert the first output voltage into a second output voltage; a first feedback circuit configured to output a first pulse width modulation (PWM) signal to the first converter to control a level of the first output voltage; and a mode controller configured to compare the input voltage and a reference voltage and determine whether the first converter operates in a first mode or a second mode based on the compared result. When the input voltage is less than or equal to the reference voltage, the first converter boosts the input voltage and output the boosted voltage as the first output voltage in the first mode, and when the input voltage is greater than the reference voltage, the first converter bypasses the input voltage and output the bypassed voltage as the first output voltage in the second mode.

    Display Device Including Touch Sensor
    7.
    发明申请
    Display Device Including Touch Sensor 审中-公开

    公开(公告)号：US20190204968A1

    公开(公告)日：2019-07-04

    申请号：US16155632

    申请日：2018-10-09

    申请人： LG Display Co., Ltd.

    发明人： Juno HUR ,  Soondong CHO ,  Hoon JANG ,  Dongju KIM

    IPC分类号： G06F3/041 ,  G06F3/044 ,  G09G3/36

    摘要： Provided is a display device including a level shifter generating an output clock swinging between a first voltage and a third voltage during a display period and swinging between a second voltage and the third voltage during a touch sensing period. Waveform distortion of a no-load alternating current (AC) signal may be prevented without eliminating a stabilizing capacitor of the level shifter, and thus, sensing sensitivity may be increased by reducing noise of a touch sensor signal.

    TOUCH DISPLAY DEVICE
    8.
    发明申请
    TOUCH DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190121476A1

    公开(公告)日：2019-04-25

    申请号：US16135596

    申请日：2018-09-19

    申请人： LG DISPLAY CO., LTD.

    发明人： Hoon JANG ,  Soon-Dong CHO ,  Won-Yong JANG

    IPC分类号： G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  G09G3/20

    CPC分类号： G06F3/0412 ,  G06F3/0416 ,  G06F3/04166 ,  G06F3/0418 ,  G06F3/044 ,  G06F3/0446 ,  G06F3/047 ,  G09G3/20 ,  G09G2310/08 ,  G09G2330/021

    摘要： A touch display device can include a panel including touch electrodes; a touch/data driver to drive data lines and the touch electrodes of the panel, read out capacitance variations in the touch electrodes and output sensing data; a gate driver to drive gate lines of the panel; a timing controller to control display operations of the touch/data driver and the gate driver; a microcontroller unit (MCU) to control touch driving and sensing operations of the touch/data driver; a first power circuit to drive the timing controller and the gate driver using a main voltage supplied through a first power line; a multiplexer to output one of a universal serial bus (USB) voltage supplied through a second power line and the main voltage supplied through the first power line; a second power circuit configured to drive the touch/data driver, the gate driver and the MCU based on an output voltage from an output of the multiplexer; and a switch connected between the output of the multiplexer and the second power line, the switch being configured to switch the output of the multiplexer to the second power line.

    BACKLIGHT UNIT
    9.
    发明申请
    BACKLIGHT UNIT 有权
    背光单元

    公开(公告)号：US20150145434A1

    公开(公告)日：2015-05-28

    申请号：US14533272

    申请日：2014-11-05

    申请人： LG DISPLAY CO., LTD.

    发明人： Hoon JANG

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0815 ,  H05B33/0812 ,  H05B33/0845 ,  H05B33/086

    摘要： A backlight unit includes a first switch receiving a constant current applied from an outside circuit and a sensing current, a first comparator receiving an output of the first switch, a second switch receiving an output of the first comparator, a second comparator receiving an output of the second switch; a thin film transistor having a gate electrode receiving an output of the second comparator; a light-emitting diode array connected to a source electrode of the thin film transistor; and a current sensor connected to a drain electrode of the thin film transistor.

    摘要翻译： 背光单元包括接收从外部电路施加的恒定电流和感测电流的第一开关，接收第一开关的输出的第一比较器，接收第一比较器的输出的第二开关，接收第一比较器的输出的第二比较器 第二个开关; 薄膜晶体管，其具有接收所述第二比较器的输出的栅电极; 连接到薄膜晶体管的源电极的发光二极管阵列; 以及连接到薄膜晶体管的漏电极的电流传感器。

    DISPLAY DEVICE
    10.
    发明公开
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230154381A1

    公开(公告)日：2023-05-18

    申请号：US17941903

    申请日：2022-09-09

    申请人： LG Display Co., Ltd.

    发明人： Hoon JANG ,  Sang-Uk LEE ,  Taehwa PARK ,  SoonDong CHO ,  Wonyong JANG

    IPC分类号： G09G3/20

    CPC分类号： G09G3/2096 ,  G09G2330/021 ,  G09G2310/0291 ,  G09G2360/10 ,  G09G2310/0297

    摘要： A display device can include a display panel having a plurality of pixels disposed on a substrate, and a power supplier configured to supply a driving voltage to the display panel. The power supplier can include a first converter configured to receive an input voltage supplied from an external system and convert the input voltage into a boost voltage, a second converter configured to convert the boost voltage into the driving voltage, a first feedback unit configured to output a first pulse width modulation (PWM) signal to the first converter so that the boost voltage is proportional to a first reference voltage, and a second feedback unit configured to output a second PWM signal to the second converter so that the driving voltage is proportional to a second reference voltage.