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公开(公告)号：US11009985B2
公开(公告)日：2021-05-18
申请号：US16843252
申请日：2020-04-08
Applicant: LG Display Co., Ltd.
Inventor： JaeKyu Park , HyunWoo Jang , HyeongWon Kang , SuWon Lee
IPC: G06F3/033 , G06F3/041 , G06F3/044 , G06F3/0354 , G06F3/047
Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.
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公开(公告)号：US10656741B2
公开(公告)日：2020-05-19
申请号：US15793262
申请日：2017-10-25
Applicant: LG Display Co., Ltd.
Inventor： JaeKyu Park , HyunWoo Jang , HyeongWon Kang , SuWon Lee
IPC: G06F3/041 , G06F3/0354 , G06F3/044 , G06F3/047
Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.
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公开(公告)号：US11250768B2
公开(公告)日：2022-02-15
申请号：US17130173
申请日：2020-12-22
Applicant: LG Display Co., Ltd.
Inventor： JaeKyu Park , Sangki Jeon
IPC: G09G3/32
Abstract: A gate driving circuit and a display apparatus comprising the same are disclosed, in which a maximum voltage level of a plurality of scan signals output from one stage circuit can be prevented from being deteriorated. The gate driving circuit comprises first to mth stage circuits, wherein each of the first to mth stage circuits includes a logic circuit portion controlling a voltage of each of a first control node and a second control node, a node boosting circuit boosting the voltage of each of the control nodes in accordance with boosting shift clock signals, a scan output circuit outputting each of first to ith scan shift clock signals as first to ith scan signals (i is a natural number of 3 or more) in response to the boosting voltage of the first control node, and a carry output circuit outputting carry shift clock signals as carry signals in response to the boosting voltage of the first control node.
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Patent Agency Ranking
公开(公告)号：US11250767B2
公开(公告)日：2022-02-15
申请号：US17129412
申请日：2020-12-21
Applicant: LG Display Co., Ltd.
Inventor： JaeKyu Park , SooHong Choi , HongJae Shin , Seongho Yun , Jeongrim Seo
IPC: G09G3/32
Abstract: A gate driving circuit and a light emitting display apparatus comprising the same are discussed, in which a charging characteristic of a control node is improved. The gate driving circuit comprises first to mth stage circuits, wherein each of the first to mth stage circuits includes first to third control nodes, a node control circuit controlling a voltage of each of the first to third control nodes, and an output buffer circuit outputting each of a scan signal, a sense signal and a carry signal in accordance with each of the first to third control nodes, the node control circuit including a node setup circuit charging a first gate high potential voltage in the first control node in response to a first carry signal supplied from a front stage circuit.
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公开(公告)号：US11211013B2
公开(公告)日：2021-12-28
申请号：US17132735
申请日：2020-12-23
Applicant: LG Display Co., Ltd.
Inventor： KwangSoo Kim , HongJae Shin , JaeKyu Park
IPC: G09G3/3266
Abstract: A gate driving circuit and a display apparatus including the same are disclosed, in which a plurality of gate lines may be driven through one stage circuit. The gate driving circuit includes first to mth stage circuits outputting a plurality of scan signals by dividing the scan signals into a first signal group and a second signal group. The first to mth stage circuits are grouped into k number of stage groups having two adjacent stage circuits, stage circuits of jth stage group (j is a natural number of 1 to k−1) output the scan signals of the first signal group to be earlier than the scan signals of the second signal group, and stage circuits of (j+1)th stage group output the scan signals of the second signal group to be earlier than the scan signals of the first signal group.
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公开(公告)号：US11526247B2
公开(公告)日：2022-12-13
申请号：US17350373
申请日：2021-06-17
Applicant: LG DISPLAY CO., LTD.
Inventor： HoonBae Kim , HyunWoo Jang , KiYong Kim , JaeKyu Park , Youngwoo Jo , SunChul Kim , SunYeop Kim , Seongkyu Kang
Abstract: Embodiments of the present disclosure relate to a touch display device, a touch circuit and a touch driving method thereof, and more particularly, a touch display device, a touch circuit and a touch driving method thereof enable to reduce effectively a ghost phenomenon in touch electrode groups by dividing a plurality of touch electrodes into a plurality of touch electrode groups with same patterns. The touch display device may include a display panel including a touch electrode group in which a plurality of long touch electrodes with long length and a plurality of short touch electrodes with short length in a first direction are alternately arranged in a second direction; and a touch circuit sequentially performing a self-capacitance sensing operation and a mutual-capacitance sensing operation for the touch electrode group.
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公开(公告)号：US11526223B2
公开(公告)日：2022-12-13
申请号：US17233182
申请日：2021-04-16
Applicant: LG Display Co., Ltd.
Inventor： JaeKyu Park , HyunWoo Jang , HyeongWon Kang , SuWon Lee
IPC: G06F3/041 , G06F3/044 , G06F3/0354 , G06F3/047
Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.
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公开(公告)号：US10042470B2
公开(公告)日：2018-08-07
申请号：US15393125
申请日：2016-12-28
Applicant: LG Display Co., Ltd.
Inventor： MyungHo Shin , SungUk Byun , YongWoo Choi , MinWoo Hwang , KiYong Kim , Youngho Kwon , Kyungjin Jang , JaeKyu Park
Abstract: A touch sensing method, a touch sensing circuit, and a touch display device perform multifrequency touch driving by varying the frequencies of touch driving signals when sensing a touch or a touched position by outputting pulse-type touch driving by which one or more touch electrodes among a number of touch electrodes disposed on a display panel are driven sequentially. Undesired parasitic capacitance that would otherwise be caused by touch driving signals is prevented from occurring, and EMI influence is reduced.
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