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公开(公告)号：US10181290B2
公开(公告)日：2019-01-15
申请号：US15991837
申请日：2018-05-29
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang , Wonyong Jang
IPC: G09G5/00 , G09G3/3258 , G09G3/20 , G09G3/36
Abstract: Embodiments relate to a display device and a method of operating the display device. The display device includes a power supply circuit configured to generate a gate voltage at an output terminal of the power supply circuit based on an input voltage to supply the gate signal to the pixels of the panel. The display device generates a switching pulse signal for a predetermined time period after the input voltage dropping below the predetermined threshold voltage. The display device generates the gate voltage at a first voltage level responsive to the switching pulse signal, the gate voltage at the first voltage level higher than the gate voltage at a second voltage level absent the switching pulse signal. Charges stored in pixels are discharged by applying the gate voltage to the pixels through gate lines, responsive to the input voltage dropping below the predetermined threshold voltage.
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公开(公告)号：US20230196955A1
公开(公告)日：2023-06-22
申请号：US17961551
申请日：2022-10-06
Applicant: LG Display Co., Ltd.
Inventor： Won Yong Jang , Soon Dong Cho , Hoon Jang , Jung Jae Kim , Dong Ju Kim
IPC: G09G3/00
CPC classification number: G09G3/006 , G09G2310/08 , G09G2330/028 , G09G2310/0286 , G09G2330/12
Abstract: A display apparatus includes a display panel driven based on a first gate clock and a second gate clock, a clock supply circuit including a first output terminal for an output of the first gate clock and a second output terminal for an output of the second gate clock, supplying the first output terminal with one of a gate high voltage and a gate low voltage as a first test voltage, and supplying the second output terminal with the other of the gate high voltage and the gate low voltage as a second test voltage, for a first time immediately after a system power is applied thereto, a power generator generating the gate high voltage and the gate low voltage and supplying the gate high voltage and the gate low voltage to the clock supply circuit, and an overcurrent detector receiving a flag signal to recognize overcurrent from the power generator to shut down the power generator, when the first output terminal and the second output terminal are short-circuited with each other at the first time interval.
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公开(公告)号：US11635841B1
公开(公告)日：2023-04-25
申请号：US17890799
申请日：2022-08-18
Applicant: LG Display Co., Ltd.
Inventor： Dongju Kim , Wonyong Jang , Hoon Jang , Juno Hur
Abstract: A touch display device operates between a normal mode and a sleep mode, the touch display device including: a display panel; a touch panel; a data drive circuit to supply a data voltage; a touch drive circuit to supply a touch driving signal; a timing controller to supply a data control signal; a micro-control unit to supply a touch synchronization signal; and a power supply to supply a first and second driving voltage, the power supply including: a first converter to output the first driving voltage; a second converter to output the second driving voltage; a first switching unit to supply the first or second input voltage to the first converter; a second switching unit to supply the first or second input voltage to the second converter; and a switching control circuit to control the first and second switching units. Therefore, power consumption of the power supply is reduced.
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公开(公告)号：US10902818B2
公开(公告)日：2021-01-26
申请号：US16503850
申请日：2019-07-05
Applicant: LG DISPLAY CO., LTD.
Inventor： Dongju Kim , Soondong Cho , Hoon Jang , Jongwoo Kim , Juno Hur
IPC: G09G3/36
Abstract: A display device and a method of driving the same are provided. The display device includes a control signal generator that generates a control signal, a first demultiplexer that time-divides a data voltage from a first channel of a data driver and distributes the data voltage from the first channel to two or more data lines, in response to the control signal, a signal delay part that delays the control signal, and a second demultiplexer that time-divides a data voltage from a second channel of the data driver and distributes the data voltage from the second channel to other two or more data lines, in response to the control signal delayed by the signal delay part.
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公开(公告)号：US10691242B2
公开(公告)日：2020-06-23
申请号：US16135596
申请日：2018-09-19
Applicant: LG DISPLAY CO., LTD.
Inventor： Hoon Jang , Soon-Dong Cho , Won-Yong Jang
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US10055056B2
公开(公告)日：2018-08-21
申请号：US15167341
申请日：2016-05-27
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang , SoonDong Cho , Wonyong Jang
IPC: G09G3/36 , G09G3/3275 , G06F3/041 , G06F1/32 , G06F3/044
CPC classification number: G06F3/0418 , G06F1/3262 , G06F3/0412 , G06F3/044 , G06F2203/04102 , G06F2203/04103
Abstract: The present embodiments relate to a display device, a touch sensing circuit, and a driving method, and more specifically, to a display device, a touch sensing circuit, and a driving method, which may: detect the power mode; create touch driving signals that have different amplitudes depending on the detected power mode; and drive touch electrodes for sensing the touch by using the created touch driving signals in order to thereby provide a high touch sensitivity regardless of the type of power mode.
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公开(公告)号：US09142191B2
公开(公告)日：2015-09-22
申请号：US14134321
申请日：2013-12-19
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang
CPC classification number: G09G5/10 , G09G3/20 , G09G3/3406 , G09G3/3696 , G09G2300/0408 , G09G2300/0426 , G09G2310/0259 , G09G2320/0673 , G09G2330/028 , H02H1/04 , H02H3/24 , H02H7/125
Abstract: A power supplying apparatus is disclosed, in which an under voltage lock out function is not performed for instantaneous voltage dip even in case that a reference under voltage detection voltage is set at high level. The power supplying apparatus comprises an under voltage detector generating an under voltage lock out signal by detecting voltage dip of an input power and performing an under voltage protection function, wherein the under voltage detector delays the input power for a delay time, which is set, to generate the under voltage lock out signal.
Abstract translation: 公开了一种供电装置，其中即使在基准欠压检测电压被设置为高电平的情况下，也不对瞬时电压骤降进行欠压锁定功能。 该供电装置包括：欠压检测器，通过检测输入功率的电压下降并执行欠压保护功能来产生欠压锁定信号，其中所述欠压检测器将所输入的功率延迟延迟时间， 产生欠压锁定信号。
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公开(公告)号：US20140184664A1
公开(公告)日：2014-07-03
申请号：US14134321
申请日：2013-12-19
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang
CPC classification number: G09G5/10 , G09G3/20 , G09G3/3406 , G09G3/3696 , G09G2300/0408 , G09G2300/0426 , G09G2310/0259 , G09G2320/0673 , G09G2330/028 , H02H1/04 , H02H3/24 , H02H7/125
Abstract: A power supplying apparatus is disclosed, in which an under voltage lock out function is not performed for instantaneous voltage dip even in case that a reference under voltage detection voltage is set at high level. The power supplying apparatus comprises an under voltage detector generating an under voltage lock out signal by detecting voltage dip of an input power and performing an under voltage protection function, wherein the under voltage detector delays the input power for a delay time, which is set, to generate the under voltage lock out signal.
Abstract translation: 公开了一种供电装置，其中即使在基准欠压检测电压被设置为高电平的情况下，也不对瞬时电压骤降进行欠压锁定功能。 该供电装置包括：欠压检测器，通过检测输入功率的电压下降并执行欠压保护功能来产生欠压锁定信号，其中所述欠压检测器将所输入的功率延迟延迟时间， 产生欠压锁定信号。
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公开(公告)号：US11094280B2
公开(公告)日：2021-08-17
申请号：US16930951
申请日：2020-07-16
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang , Juno Hur , Dong Ju Kim , Soon Dong Cho
IPC: G09G3/36
Abstract: The present disclosure relates to a level shifter and a display device using the same, and the level shifter includes a first transistor configured to increase a voltage of an output signal, a second transistor configured to lower a voltage of the output signal, a first driver configured to vary a gate voltage of the first transistor in response to a first Vgs signal being varied within a transition time of the output signal, and a second driver configured to vary a gate voltage of the second transistor in response to a second Vgs signal being varied within a transition time of the output signal.
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公开(公告)号：US10747347B2
公开(公告)日：2020-08-18
申请号：US16142640
申请日：2018-09-26
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang , SoonDong Cho , Wonyong Jang
Abstract: Disclosed are a touch display device, a touch display panel, and a driving circuit. More specifically, the present disclosure provides a touch display device, a touch display panel, and a driving circuit which can simultaneously perform display driving and touch driving through a ground modulation technique.
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