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公开(公告)号：US20210247869A1
公开(公告)日：2021-08-12
申请号：US17245652
申请日：2021-04-30
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SeungMok SHIN , JuHan KIM , YongChan PARK , HyunHo PARK
Abstract: Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.
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公开(公告)号：US20190079623A1
公开(公告)日：2019-03-14
申请号：US16124998
申请日：2018-09-07
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SeungMok SHIN , JuHan KIM , YongChan PARK , HyunHo PARK
Abstract: Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.
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公开(公告)号：US20230004251A1
公开(公告)日：2023-01-05
申请号：US17942805
申请日：2022-09-12
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SeungMok SHIN , JuHan KIM , YongChan PARK , HyunHo PARK
Abstract: Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.
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Patent Agency Ranking
公开(公告)号：US20190384437A1
公开(公告)日：2019-12-19
申请号：US16439544
申请日：2019-06-12
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SungChul KIM , SunYeop KIM , Seongkyu KANG , SeungMok SHIN , SungHoon LEE
Abstract: A touch display device and a method of driving the same. A transition value due to polarity inversion of a data voltage supplied to a predetermined number of adjacent subpixels is reduced by varying an inversion pattern by analysis of image data, so that fluctuations in the voltage of touch electrodes due to the transition of the data voltage are minimized. Accordingly, noise due to fluctuations in the voltage of the touch electrodes is removed so as to improve the performance of touch sensing performed in a period in which display driving is performed.
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公开(公告)号：US20200073530A1
公开(公告)日：2020-03-05
申请号：US16460697
申请日：2019-07-02
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , SunYeop KIM , SungHoon LEE , SeungMok SHIN , SungChul KIM , Youngwoo JO , Seongkyu KANG , HongJu LEE
IPC: G06F3/041 , G06F3/0354 , G06F3/044 , G06F3/038
Abstract: A touch display device accurately distinguishes a touch input performed using a finger and a touch input performed using a pen, such as a stylus, significantly reduce a touch sensing time, simultaneously perform a display operation and a touch sensing operation, and operate in a power saving manner. Touch sensing does not restrict an image display time of a display panel. Touch inputs are sensed without degradation in touch performance, which would otherwise be caused by parasitic capacitance occurring in electrodes within the display panel, such as data lines or gate lines.
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公开(公告)号：US20200019270A1
公开(公告)日：2020-01-16
申请号：US16504783
申请日：2019-07-08
Applicant: LG DISPLAY CO., LTD.
Inventor： SeungMok SHIN , HoonBae KIM , SunYeop KIM , SungHoon LEE
Abstract: The present disclosure relates to touch display panels and touch display devices. More specifically, the touch display panels and touch display devices provided are capable of performing display driving and touch driving simultaneously or together through a ground modulation scheme. Further, by separating a power source for driving a display controller D-CTR from a power source for driving a touch controller T-CTR, and controlling respective power sources independently, it is possible to reduce power consumption. Also, by enabling a power source for driving a ground modulation circuit to be variable, it is possible to provide functions based on touch sensing under a condition of reduced power consumption.
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公开(公告)号：US20220206608A1
公开(公告)日：2022-06-30
申请号：US17357522
申请日：2021-06-24
Applicant: LG DISPLAY CO., LTD.
Inventor： SeungMok SHIN , Hyunkyung KIM , ChangHwan SEO , SeungChul PARK , KiJeong LEE
Abstract: Discussed are a display panel which can be applied to a touch display device by changing a design of a conductive layer to electrically connect a plurality of pads to a plurality of common electrodes, and a display device and a touch display panel device thereof.
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公开(公告)号：US20200004365A1
公开(公告)日：2020-01-02
申请号：US16448834
申请日：2019-06-21
Applicant: LG Display Co., Ltd.
Inventor： SeungMok SHIN , CheolSe KIM , JuHan KIM , HoonBae KIM , HyunHo PARK , Jinseong KIM , YongChan PARK
Abstract: A touch display panel and device. A common electrode is provided between a display driving signal line and a touch line. The common electrode functions as a shielding pattern that prevents display noise of a touch sensing signal without increasing the number of masks used to form the touch display device. A touch load reducing layer is disposed in a region between the touch line and the common electrode, except for a region in which the common electrode and pixel electrodes overlap. This reduces the load of the touch line and improves touch sensing performance without having an adverse effect on display driving.
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