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11.发明申请公开(公告)号：US20180196573A1
公开(公告)日：2018-07-12
申请号：US15916199
申请日：2018-03-08
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu KANG , SungChul KIM
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/0418 , G06F3/044 , G09G5/006 , G09G2300/0413 , G09G2310/0245 , G09G2310/0275 , G09G2310/0297 , G09G2310/08
Abstract: A touch circuit, a display driver circuit, a touch display device, and a method of driving the same. After display driving is ended and before touch driving begins to be performed, touch driving and touch sensing are accurately performed through pre-setting driving without the influence of display driving that was ended already. An accurate touch sensing result without touch sensing noise is obtained.
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12.发明申请公开(公告)号：US20170102824A1
公开(公告)日：2017-04-13
申请号：US14957574
申请日：2015-12-02
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu KANG , SungChul KIM
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/0418 , G06F3/044 , G09G5/006 , G09G2300/0413 , G09G2310/0245 , G09G2310/0275 , G09G2310/0297 , G09G2310/08
Abstract: A touch circuit, a display driver circuit, a touch display device, and a method of driving the same. After display driving is ended and before touch driving begins to be performed, touch driving and touch sensing are accurately performed through pre-setting driving without the influence of display driving that was ended already. An accurate touch sensing result without touch sensing noise is obtained.
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公开(公告)号：US20200210018A1
公开(公告)日：2020-07-02
申请号：US16710829
申请日：2019-12-11
Applicant: LG Display Co., Ltd.
Inventor： SungChul KIM , HoonBae KIM , SunYeop KIM , Seongkyu KANG
Abstract: A touch display device, a driving circuit, and a driving method are provided. An image defect which occurs when display driving and touch driving are simultaneously executed can be reduced by performing control such that a voltage level of a touch electrode driving signal (TDS) varies in a section other than a high-level period (Pon) of an ON-clock signal (ON_CLK) and/or a high-level period (Poff) of an OFF-clock signal (OFF_CLK).
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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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Patent Agency Ranking
公开(公告)号：US20190385551A1
公开(公告)日：2019-12-19
申请号：US16440187
申请日：2019-06-13
Applicant: LG Display Co., Ltd.
Inventor： SungChul KIM , CheolSe KIM , HoonBae KIM , SunYeop KIM , Seongkyu KANG
IPC: G09G3/36 , G06F3/041 , G02F1/1333
Abstract: The present disclosure relates to a touch display device, a touch sensing circuit, and a driving method. Further, the present disclosure relates to a touch display device, a touch sensing circuit, and a driving method, in which multiple touch electrodes are grouped into multiple touch electrode groups, and sensing is concurrently performed for each of the multiple touch electrode groups, so that excellent touch sensitivity and a fast touch sensing speed are allowed.
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公开(公告)号：US20180164950A1
公开(公告)日：2018-06-14
申请号：US15836583
申请日：2017-12-08
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu KANG , HongChul KIM , SungYub LEE
CPC classification number: G06F3/0421 , G06F3/0412 , G06K9/0004
Abstract: The present disclosure relates to a touch display device, a touch sensing system, and a touch sensing method. More specifically, touch information (fingerprint information or touch position information) may be acquired in response to current flowing in a data line through a touch sensing mode period that includes: a first period in which an optical sensor, the opposite ends of which are connected to a source node and a drain node of a switching transistor, is disposed in a pixel region, a gate signal of a turn-on level voltage is supplied to a gate line and a driving voltage is supplied to the data line; and a second period in which a gate signal of a turn-off level voltage is supplied to the gate line, a reference voltage is supplied to the data line, and an optical sensor is irradiated with light. According to the present disclosure, it is possible to accurately sense a touch position and/or a fingerprint in an optical manner using an optical sensor without being influenced by parasitic capacitance.
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公开(公告)号：US20180088715A1
公开(公告)日：2018-03-29
申请号：US15707714
申请日：2017-09-18
Applicant: LG Display Co., Ltd.
Inventor： SungYub LEE , HongChul KIM , YoungJoon LEE , Seongkyu KANG
IPC: G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1343
CPC classification number: G06F3/0412 , G02F1/13338 , G02F1/1343 , G06F3/0416 , G06F3/044
Abstract: Provided is a driving circuit included in a touch display device, which is capable of performing display driving, touch sensing, and additional sensing in addition to the touch sensing. The driving circuit includes a common electrode driving controller, a pixel electrode driving controller, and a sending unit. The common electrode driving controller is configured to apply a common voltage to a common electrode during a display-driving period. The pixel electrode driving controller is configured to apply a data voltage to a pixel electrode during the display-driving period. The sensing unit is connected to the common electrode driving controller during a first sensing period and to the pixel electrode driving controller during a second sensing period. The sensing unit is configured to sense a change in capacitance between the common electrode or pixel electrode and an object that is in contact with the display panel.
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18.发明申请公开(公告)号：US20170168644A1
公开(公告)日：2017-06-15
申请号：US15444105
申请日：2017-02-27
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu KANG , SungChul KIM
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/0418 , G06F3/044 , G09G5/006 , G09G2300/0413 , G09G2310/0245 , G09G2310/0275 , G09G2310/0297 , G09G2310/08
Abstract: A touch circuit, a display driver circuit, a touch display device, and a method of driving the same. After display driving is ended and before touch driving begins to be performed, touch driving and touch sensing are accurately performed through pre-setting driving without the influence of display driving that was ended already. An accurate touch sensing result without touch sensing noise is obtained.
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公开(公告)号：US20150185913A1
公开(公告)日：2015-07-02
申请号：US14478196
申请日：2014-09-05
Applicant: LG Display Co., Ltd.
Inventor： Sungsu HAN , Seongkyu KANG
IPC: G06F3/044
CPC classification number: G06F3/044 , G06F3/0418
Abstract: A touch sensing system includes a plurality of touch sensors, sensing lines connected to the touch sensors, a touch sensing integrated circuit (IC) sensing a touch input using signals received through a plurality of receiving channels, a plurality of differential amplifiers which are formed between the sensing lines and the receiving channels of the touch sensing IC and amplify a difference between touch sensor signals received through adjacent sensing lines, and a multiplexer which connects the adjacent sensing lines to input terminals of each differential amplifier in a forward sensing mode and switches the adjacent sensing lines connected to the input terminals of each differential amplifier in a reverse sensing mode.
Abstract translation: 触摸感测系统包括多个触摸传感器，连接到触摸传感器的感测线，使用通过多个接收通道接收的信号来感测触摸输入的触摸感测集成电路（IC）;多个差分放大器， 触摸感测IC的感测线路和接收通道，并且放大通过相邻感测线路接收的触摸传感器信号之间的差异;以及多路复用器，其将相邻感测线路连接到前向感测模式中的每个差分放大器的输入端子，并切换 相邻的感测线以反向感测模式连接到每个差分放大器的输入端。
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