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21. 发明授权

US09710114B2 Touch detection device, touch detection method and touch screen panel, using driving back phenomenon, and display device with built-in touch screen panel 有权
公开(公告)号：US09710114B2
公开(公告)日：2017-07-18
申请号：US14347892
申请日：2012-09-28
申请人： G2TOUCH Co., LTD.
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G09G3/36 , G06F3/0354 , G06F3/041
CPC分类号： G06F3/044 , G06F3/03545 , G06F3/0416 , G06F2203/04104 , G09G3/3655 , G09G3/3696 , G09G2310/08
摘要： Provided is a touch detection device, touch detection method, and touch screen panel, which detects a touch signal by detecting a driving back phenomenon occurring in a touch pad by a driving voltage applied to a driving capacitor, and a display device with a built-in touch screen panel. The touch detection device that is added on top of a display device and detects occurrence of a touch capacitance (Ct) by an approach of a bodily finger (25) or a touch input instrument such as a conductor similar to the bodily finger, the touch detection device comprising: a touch pad (10) that forms the touch capacitance (Ct) between the touch input instrument and the touch pad; a driving capacitor (Cdrv) whose one side is connected to the touch pad (10) and to the other side of which a driving voltage for detection of a touch input is applied; a common voltage detector that detects a common voltage generated from the display device; a driving voltage generator that generates the driving voltage in synchronization with the common voltage; and a touch detector that is connected to the touch pad (10), and that detects a touch signal by using a driving back phenomenon when the touch capacitance (Ct) is added to the driving capacitor (Cdrv) according to occurrence or non-occurrence of a touch in the touch input instrument. A touch signal is detected while avoiding a point in time of a change of a common voltage state, and a driving voltage is applied through a driving capacitor connected to a touch detector, to thus detect whether or not a driving back phenomenon occurs in the touch detector and to thereby acquire a touch signal. Accordingly, an influence due to parasitic capacitance generated by noise, coupling phenomenon or other factors is minimized, to thus acquire a touch signal stably.

22. 发明授权

US09606691B2 Voltage difference-based capacitive touch detection device, capacitive touch detection method and capacitive touch screen panel, and display device with built-in capacitive touch screen panel 有权
公开(公告)号：US09606691B2
公开(公告)日：2017-03-28
申请号：US14811107
申请日：2015-07-28
申请人： G2TOUCH Co., LTD.
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G06F3/041 , G06F3/045 , G06F3/01 , G09G3/36
CPC分类号： G06F3/044 , G02F1/13338 , G02F1/133512 , G02F1/133514 , G02F1/13439 , G02F1/1368 , G02F2201/121 , G02F2201/123 , G06F3/017 , G06F3/0412 , G06F3/0416 , G06F3/0418 , G06F3/045 , G06F3/047 , G06F2203/04101 , G06F2203/04103 , G06F2203/04105 , G06F2203/04111 , G09G3/36
摘要： Provided is a new capacitive touch detection device, detection method, and touch screen panel for detecting a touch signal by detecting a voltage difference of a sensor pattern from a driving voltage applied by an auxiliary capacitor, and to a display device having a built-in capacitive touch screen. A capacitive touch detection device includes: a sensor pattern (10) forming a touch capacitance (Ct) in between a touch input device and the sensor pattern; an auxiliary capacitor (Caux) connected on one side to the sensor pattern (10) and having a driving voltage for touch detection applied to the other side thereof; a charging unit (12) for providing pre-charge signals to the touch capacitance (Ct) and the auxiliary capacitor (Caux); and a touch detection sensor (14) which is connected to the sensor pattern (10) and which detects a touch signal by detecting a voltage difference in the sensor pattern (10) when the touch capacitance (Ct) is added to the auxiliary capacitor (Caux) according to a touch of a touch input instrument. Effects of parasitic capacitance generated due to noise, coupling phenomena and other factors are minimized, to thus stably acquire touch signals.

23. 发明公开

US20240231541A1 METHOD OF DRIVING TOUCH PANEL FOR SUPPRESSING EMI EFFECT 审中-公开
公开(公告)号：US20240231541A1
公开(公告)日：2024-07-11
申请号：US18402724
申请日：2024-01-03
申请人： G2touch Co., Ltd.
发明人： Sung-Won CHO , Dong-Won YUN
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/04184 , G06F3/0412 , G06F3/04164 , G06F3/04166 , G06F3/0446
摘要： A touch detection device includes a panel including a plurality of electrodes regularly arranged in rows and columns, a connector configured to electrically connect some of the electrodes to form a plurality of sensing channels, and a driver configured to provide driving signals to the sensing channels, wherein the driver parts different edges of the driving signals to different sensing channels.

24. 发明授权

US11042246B2 Touch pad for detecting contact and contactless touches, method of detecting touch by using touch pad, and display device including touch pad 有权
公开(公告)号：US11042246B2
公开(公告)日：2021-06-22
申请号：US16382107
申请日：2019-04-11
申请人： G2TOUCH Co., LTD.
发明人： Young Woo Yun , Tae Wook Kim , Hwa Joo Noh , Ki Hwan Oh
IPC分类号： G06F3/044
摘要： The present invention relates to a display device having a touch detection function, and relates to a touch pad which is capable of detecting a contact touch and a contactless touch, a method of detecting a touch by using the same, and a display device including the same. According to the touch pad, the method of detecting a touch by using the touch pad, and the display device including the touch pad of the present invention, it is possible to simultaneously detect a contact touch and a contactless touch, and increase touch sensitivity by additionally applying a driving back voltage.

25. 发明授权

US10620749B2 Display device having embedded touch screen and method for detecting touch to prevent a signal line from being observed and remove an influence of a touch sensor 有权
公开(公告)号：US10620749B2
公开(公告)日：2020-04-14
申请号：US15375067
申请日：2016-12-09
申请人： G2TOUCH Co., LTD
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G06F3/041 , G06F3/047 , G02F1/1333 , G02F1/1343
CPC分类号： G06F3/0418 , G02F1/13338 , G02F1/13439 , G02F1/133345 , G02F1/134309 , G06F3/044 , G06F3/047 , G06F3/0412 , G06F3/0416 , G02F2201/121 , G02F2201/123 , G06F2203/04103 , G06F2203/04107 , G06F2203/04112
摘要： Disclosed herein are a display device having an embedded touch screen and a method for detecting a touch, and more particularly, a display device having an embedded touch screen capable of preventing deterioration of image quality generated in the display device when a touch sensor and a sensor signal line are disposed in the display device and solving a problem that sensitivity of a detected touch signal is weakened due to a parasitic capacitance generated between the touch sensor and the sensor signal line and a signal line and components of the display device, and a method for detecting a touch.

26. 发明授权

US10474261B2 Touch detecting apparatus and touch detecting method using pixel or pixels in display devices 有权
公开(公告)号：US10474261B2
公开(公告)日：2019-11-12
申请号：US15375011
申请日：2016-12-09
申请人： G2TOUCH Co., LTD
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G09G3/3208 , G06F3/041
摘要： Disclosed herein are a touch detecting apparatus and a touch detecting method using a pixel or pixels in display devices including a means for applying an AC input voltage to a drive IC of the display device and detecting a change in touch capacitance between the pixel and an object in synchronization with a change in amplitude of the AC input voltage. In particular, the touch detecting apparatus using a pixel or pixels in display devices according to an exemplary embodiment of the present invention includes: a grayscale voltage generator applying a grayscale voltage to a source line and a sensing signal processor detecting a touch signal based on a feedback voltage of the grayscale voltage applied to the source line.

27. 发明授权

US10386973B2 Display device having a guard layer configured to prevent interference of signals between a touch screen and a signal line, and method of manufacturing the same 有权
公开(公告)号：US10386973B2
公开(公告)日：2019-08-20
申请号：US15375005
申请日：2016-12-09
申请人： G2TOUCH Co., LTD
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G06F3/041
摘要： Disclosed herein are a display device having an embedded touch screen capable of preventing deterioration of image quality generated in the display device when a touch sensor and a sensor signal line are disposed in the display device and solving a problem that sensitivity of a detected touch signal is weakened due to a parasitic capacitance generated between the touch sensor and the sensor signal line and a driving signal line and components of the display device, and a method of manufacturing the same.

28. 发明授权

US09772733B2 Touch signal detection apparatus and touch signal detection method 有权
公开(公告)号：US09772733B2
公开(公告)日：2017-09-26
申请号：US14961593
申请日：2015-12-07
申请人： G2TOUCH Co., LTD
发明人： Sung Ho Lee
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/044 , G06F3/0416 , G06F2203/04107
摘要： Disclosed herein is a capacitive touch input apparatus of a human finger or a touch input means having conductive characteristics similar thereto, and more particularly, are a touch signal detection apparatus and a touch signal detection method capable of being widely used for a touch detection sensor having different array arrangements. According to the touch signal detection apparatus and the touch signal detection method according to the present invention, one touch signal detection apparatus may be widely used for the touch detection sensor having different arrays by using a re-map technology. According to the touch signal detection apparatus and the touch signal detection method according to the present invention, it is possible to save costs using the same touch signal detection apparatus without producing the separate touch signal detection apparatus for a display device including the touch detection sensor having different arrays.

29. 发明授权

US09703438B2 Touch detection device, touch detection method and touch screen panel, using driving back phenomenon, and display device with built-in touch screen panel 有权
公开(公告)号：US09703438B2
公开(公告)日：2017-07-11
申请号：US14800991
申请日：2015-07-16
申请人： G2TOUCH Co., LTD.
发明人： Sung Ho Lee
IPC分类号： G06F3/044 , G09G3/36 , G06F3/0354 , G06F3/041
CPC分类号： G06F3/044 , G06F3/03545 , G06F3/0416 , G06F2203/04104 , G09G3/3655 , G09G3/3696 , G09G2310/08
摘要： Provided is a touch detection device, touch detection method, and touch screen panel, which detects a touch signal by detecting a driving back phenomenon occurring in a touch pad by a driving voltage applied to a driving capacitor, and a display device with a built-in touch screen panel. The touch detection device that is added on top of a display device and detects occurrence of a touch capacitance (Ct) by an approach of a bodily finger (25) or a touch input instrument such as a conductor similar to the bodily finger, the touch detection device comprising: a touch pad (10) that forms the touch capacitance (Ct) between the touch input instrument and the touch pad; a driving capacitor (Cdrv) whose one side is connected to the touch pad (10) and to the other side of which a driving voltage for detection of a touch input is applied; a common voltage detector that detects a common voltage generated from the display device; a driving voltage generator that generates the driving voltage in synchronization with the common voltage; and a touch detector that is connected to the touch pad (10), and that detects a touch signal by using a driving back phenomenon when the touch capacitance (Ct) is added to the driving capacitor (Cdrv) according to occurrence or non-occurrence of a touch in the touch input instrument. A touch signal is detected while avoiding a point in time of a change of a common voltage state, and a driving voltage is applied through a driving capacitor connected to a touch detector, to thus detect whether or not a driving back phenomenon occurs in the touch detector and to thereby acquire a touch signal. Accordingly, an influence due to parasitic capacitance generated by noise, coupling phenomenon or other factors is minimized, to thus acquire a touch signal stably.

30. 发明授权

US11656731B2 Touch screen implementing low power consumption by using interrupt method and sensing method using the same 有权
公开(公告)号：US11656731B2
公开(公告)日：2023-05-23
申请号：US17694521
申请日：2022-03-14
申请人： G2TOUCH CO., LTD.
发明人： Hyung Guel Kim
IPC分类号： G06F3/044 , G06F3/041
CPC分类号： G06F3/0446 , G06F3/0412 , G06F3/0416
摘要： A touch screen according to the present invention senses a touch in an idle mode by using an interrupt method of touch event capturing, not by a method of bottom up or top down polling lines of each row or column, thereby implementing an improved touch response speed and low power consumption.

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