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公开(公告)号：US20230367425A1
公开(公告)日：2023-11-16
申请号：US18144513
申请日：2023-05-08
Applicant: LG Display Co., Ltd.
Inventor： HyunWoo Jang
CPC classification number: G06F3/04186 , G06F3/0412 , G06F3/0446
Abstract: A touch display device and a weighted touch sensing method of a touch controller for providing an accurate touch sensing performance and a high quality of image display are disclosed. The touch display device may include a display panel in which a plurality of subpixels are disposed and a plurality of touch electrodes overlapping one or more of the plurality of subpixels are disposed, and a touch driving circuit configured to supply a touch driving signal including a plurality of pulses to one or more of the plurality of touch electrodes, the touch driving circuit configured to output respective touch driving signals having different numbers of pulses in a first sensing sub-period and a second sensing sub-period in the period of one frame.
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公开(公告)号：US10452162B2
公开(公告)日：2019-10-22
申请号：US15782738
申请日：2017-10-12
Applicant: LG Display Co., Ltd.
Inventor： HyunWoo Jang , SuWon Lee
IPC: G06F3/0354 , G06F3/041 , G06F3/044
Abstract: The present disclosure provides a touch display device and a touch driving circuit which support touch sensing of an active pen, and a method of driving the same. Sensing data acquired during a first sensing time period in a pen position sensing section may be transmitted as one data packet, and a plurality of pieces of sensing data acquired during a second sensing time period shorter than the first sensing time period in a pen data sensing section may be transmitted as one data packet, so that it is possible to reduce an unnecessary sensing time period when pen data is sensed, while preventing sensing data transmission sections from overlapping each other. In addition, information about a Most Significant Bit (MSB) of the sensing data to be transmitted when the sensing data is transmitted may be transmitted in the pen data sensing section, so that it is possible to easily restore the sensing data while minimizing a loss of the sensing data.
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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：US11614827B2
公开(公告)日：2023-03-28
申请号：US17395150
申请日：2021-08-05
Applicant: LG Display Co., Ltd.
Inventor： HongJu Lee , Youngwoo Jo , HyunWoo Jang
IPC: G06F3/041 , G06F3/0354 , G06F3/044
Abstract: Discussed is a touch display device, including a display panel on which a touch screen panel including a plurality of touch electrodes is embedded, and a touch control unit configured to generate a pen detection signal corresponding to a pen driving signal of a stylus from a touch sensing signal transmitted from the display panel, and generate a touch driving signal synchronized with the pen driving signal of the stylus by using the pen detection signal.
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Patent Agency Ranking
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：US11163398B2
公开(公告)日：2021-11-02
申请号：US17113781
申请日：2020-12-07
Applicant: LG DISPLAY CO., LTD.
Inventor： HyunWoo Jang , JuneGun Chung , Youngwoo Jo , HongJu Lee
Abstract: Provided are a touch display device and a touch driving method thereof. Touch electrodes are grouped into a touch sensing block and non-touch blocks. The touch electrodes in the touch sensing block and the touch electrodes in the non-touch blocks are sensed at different sensing ratios. Power consumption is efficiently managed and sensitivity in touch sensing is maintained.
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公开(公告)号：US11069140B2
公开(公告)日：2021-07-20
申请号：US16424764
申请日：2019-05-29
Applicant: LG DISPLAY CO., LTD.
Inventor： HyunWoo Jang , Kyungjin Jang
Abstract: A display device includes a display panel in which a plurality of subpixels are disposed and the display panel comprises a first active area in which N number of subpixels among the plurality of subpixels are disposed, and a second active area in which M number of subpixels among the plurality of subpixels are disposed and is located outside of the first active area, and a first image and a second image are displayed on the subpixels disposed in the first active area, and the first image and a blank image are displayed on the subpixels disposed in the second active area.
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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：US11907470B2
公开(公告)日：2024-02-20
申请号：US17964780
申请日：2022-10-12
Applicant: LG Display Co., Ltd.
Inventor： HyunWoo Jang
CPC classification number: G06F3/04164 , G06F3/0445
Abstract: A touch display device and a touch sensing system are disclosed. When a touch controller transmits or receives data to or from a plurality of touch driving circuits through a common line, the touch driving circuit that does not transmit a sensing completion signal to the touch controller may identify whether a malfunctioned state occurs based on an operation state when a read command is received from the touch controller and may transmit transformed sensing data to the touch controller. Accordingly, the touch controller easily identifies the malfunctioned state of the touch driving circuit and performs control according to a type of the malfunctioned state, thereby preventing or reducing the performance degradation of touch sensing due to a malfunction of the touch driving circuit.
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