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公开(公告)号：US11983347B2
公开(公告)日：2024-05-14
申请号：US18189067
申请日：2023-03-23
Applicant: LG Display Co., Ltd.
Inventor： HongJu Lee , HyeongWon Kang , Youngwoo Jo
IPC: G06F3/044 , G02F1/1333 , G02F1/1343 , G02F1/1362 , G06F3/041 , G09G3/36
CPC classification number: G06F3/0412 , G02F1/13338 , G02F1/134309 , G02F1/136286 , G06F3/0418 , G06F3/044 , G09G3/3677 , G09G3/3688 , G02F2201/121 , G02F2201/123 , G06F2203/04112 , G09G2310/027 , G09G2310/0286 , G09G2310/0289 , G09G2310/0291
Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.
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公开(公告)号：US11868564B2
公开(公告)日：2024-01-09
申请号：US17966370
申请日：2022-10-14
Applicant: LG Display Co., Ltd.
Inventor： Sojung Jung , Youngwoo Jo
CPC classification number: G06F3/0418 , G06F3/0412 , G09G3/20
Abstract: Embodiments of the present disclosure relate to a touch controller, a touch sensing system, and a touch display device. Among data communication periods between the touch controller and a touch driving circuit, during the data communication period included in a period in which a system clock signal is not output, a level of a communication control signal is changed a plurality of times, thereby allowing the touch driving circuit to recognize an address start time point. Therefore, it is possible to reduce power consumption of the touch sensing system by reducing a period in which the system clock signal is output and to improve the efficiency of data communication of the touch sensing system by enabling normal data communication in a period in which the system clock signal is not output.
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Patent Agency Ranking
公开(公告)号：US11620010B2
公开(公告)日：2023-04-04
申请号：US17354885
申请日：2021-06-22
Applicant: LG Display Co., Ltd.
Inventor： HongJu Lee , HyeongWon Kang , Youngwoo Jo
IPC: G06F3/044 , G06F3/041 , G02F1/1333 , G02F1/1343 , G02F1/1362 , G09G3/36
Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.
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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：US11307698B2
公开(公告)日：2022-04-19
申请号：US17116530
申请日：2020-12-09
Applicant: LG Display Co., Ltd.
Inventor： Youngwoo Jo , HyeongWon Kang
Abstract: Embodiments of the present disclosure relate to touch display devices, driving circuits, and driving methods, and more specifically, to a touch display device, a driving circuit, and a driving method for enabling the functionality of a micro control unit to be minimized and power consumption to be reduced by allowing one or more combined integrated circuits to generate a touch sensing control signal and provide the generated signal to a plurality of combined integrated circuits. Further, according to embodiments of the present disclosure, touch display devices, driving circuits, and driving methods are provided for enabling power consumption of a touch power integrated circuit to be reduced by using a touch sensing control signal generated by one or more combined integrated circuits as a load-free driving signal.
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公开(公告)号：US20200210007A1
公开(公告)日：2020-07-02
申请号：US16719006
申请日：2019-12-18
Applicant: LG DISPLAY CO., LTD.
Inventor： HongJu Lee , HyeongWon Kang , Youngwoo Jo
IPC: G06F3/041 , G06F3/047 , G09G3/36 , G02F1/1362 , G02F1/1333
Abstract: A touch display device, a common driving circuit, and a driving method are discussed. The touch display device can include a common driving circuit configured to drive a plurality of common electrodes used for display driving and touch driving, wherein the common driving circuit can include a common signal stabilization amplifier configured to control the average of a first input signal and a second input signal, which are respectively received from a first common electrode and a second common electrode, to correspond to a reference common signal and to output a first control input signal and a second control input signal; and a differential amplifier configured to output a differential sensing signal that is proportional to the difference between the first control input signal and the second control input signal. Accordingly, the impact of display driving and touch driving on each other when simultaneously performing the display driving and the touch driving can be reduced.
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公开(公告)号：US09733778B2
公开(公告)日：2017-08-15
申请号：US14983328
申请日：2015-12-29
Applicant: LG Display Co., Ltd.
Inventor： Sangyong Lee , Kyungjin Jang , Jaekyu Park , Youngwoo Jo
CPC classification number: G06F3/044 , G06F3/0412 , G06F3/0416 , G09G3/20
Abstract: A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.
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