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公开(公告)号：US10916189B2
公开(公告)日：2021-02-09
申请号：US16544032
申请日：2019-08-19
Applicant: LG Display Co., Ltd.
Inventor： Soondong Cho , Hoon Jang , Jongwoo Kim , Juno Hur , Jungjae Kim , Dongju Kim
IPC: G09G3/3225 , G09G3/3266 , G09G3/3275 , G09G3/36
Abstract: A scan driver comprises a level shifter configured to output varied clock signals that have different frequencies for at least two consecutive periods; and a shift register operating based on the varied clock signals output from the level shifter and outputting scan signals.
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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：US20150187319A1
公开(公告)日：2015-07-02
申请号：US14514074
申请日：2014-10-14
Applicant: LG Display Co., Ltd.
Inventor： Soondong Cho , Minki Kim , Juno Hur , Dongju Kim
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3614 , G09G2320/0613 , G09G2330/023 , G09G2330/12
Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a power module, which senses an input voltage and outputs a mode conversion signal when the input voltage is equal to or less than a reference voltage, and a timing controller which changes a driving mode of a source driver integrated circuit (IC) in response to receiving the mode conversion signal from the power module.
Abstract translation: 公开了一种液晶显示器。 液晶显示器包括功率模块，其在输入电压等于或小于参考电压时感测输入电压并输出模式转换信号;以及定时控制器，其改变源极驱动器集成电路的驱动模式（ IC）响应于从电源模块接收模式转换信号。
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公开(公告)号：US10795473B2
公开(公告)日：2020-10-06
申请号：US16155632
申请日：2018-10-09
Applicant: LG Display Co., Ltd.
Inventor： Juno Hur , Soondong Cho , Hoon Jang , Dongju Kim
Abstract: 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.
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公开(公告)号：US10444881B2
公开(公告)日：2019-10-15
申请号：US15812702
申请日：2017-11-14
Applicant: LG Display Co., Ltd.
Inventor： Hoon Jang , Soon-Dong Cho , Juno Hur , Dong-Ju Kim , Won-Yong Jang
Abstract: Disclosed are a touch power circuit and a touch display device in which an operational amplifier buffers an input pulse having a first voltage and a higher second voltage alternate, and uses the buffered input pulse to provide an output pulse. The operational amplifier includes a non-inverting input terminal to which the input pulse is supplied, an inverting input terminal connected to the output terminal, and an output unit driven according to a result of amplifying a difference between a voltage of the non-inverting input terminal and a voltage of the inverting input terminal and configured to charge and discharge the output terminal. The circuits and devices may further include an offset voltage applier configured to supply an offset voltage having a first polarity to the non-inverting input terminal and/or the inverting input terminal to level-shift the input pulse.
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Patent Agency Ranking
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：US11263977B2
公开(公告)日：2022-03-01
申请号：US17111179
申请日：2020-12-03
Applicant: LG Display Co., Ltd.
Inventor： Dongju Kim , Minki Kim , Inho Yeo , Juno Hur
IPC: G09G3/3266 , G09G3/3275
Abstract: Disclosed is a display device including: a display panel; a timing controller generating image data corresponding to an input image, and generating and outputting a first start signal, an on clock, and an off clock; a level shifter generating a second start signal in synchronization with the first start signal, generating gate clocks that swing to a predetermined voltage and have multiple phases, by using the on clock and the off clock, and outputting the generated gate clocks; a shift register including multiple stages connected to gate lines of the display panel, respectively, and outputting a scan signal sequentially to the gate lines by using the second start signal and the gate clocks; and a data driving circuit supplying a data voltage corresponding to the image data to data lines of the display panel in synchronization with the scan signal.
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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：US09905189B2
公开(公告)日：2018-02-27
申请号：US14966147
申请日：2015-12-11
Applicant: LG Display Co., Ltd.
Inventor： Soondong Cho , Juno Hur , Dongju Kim
IPC: G09G3/36
CPC classification number: G09G3/3696 , G09G3/3648 , G09G3/3655 , G09G3/3681 , G09G2330/02 , G09G2330/021 , G09G2330/025 , G09G2330/12
Abstract: A liquid crystal display device includes a liquid crystal panel configured to display an image, a driver configured to drive the liquid crystal panel, a timing controller configured to control the driver, and a power supply configured to be supplied by an input voltage, supply a common voltage to the liquid crystal panel, and temporarily vary a compensation ratio of the common voltage when a pattern causing a drop of the input voltage is displayed by the display device.
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公开(公告)号：US09418612B2
公开(公告)日：2016-08-16
申请号：US14514074
申请日：2014-10-14
Applicant: LG Display Co., Ltd.
Inventor： Soondong Cho , Minki Kim , Juno Hur , Dongju Kim
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3614 , G09G2320/0613 , G09G2330/023 , G09G2330/12
Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a power module, which senses an input voltage and outputs a mode conversion signal when the input voltage is equal to or less than a reference voltage, and a timing controller which changes a driving mode of a source driver integrated circuit (IC) in response to receiving the mode conversion signal from the power module.
Abstract translation: 公开了一种液晶显示器。 液晶显示器包括功率模块，其在输入电压等于或小于参考电压时感测输入电压并输出模式转换信号;以及定时控制器，其改变源极驱动器集成电路的驱动模式（ IC）响应于从电源模块接收模式转换信号。
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