-
公开(公告)号：US09058072B2
公开(公告)日：2015-06-16
申请号：US13687738
申请日：2012-11-28
Applicant: LG DISPLAY CO., LTD.
Inventor： Sanghyuck Bae , Sungchul Kim
CPC classification number: G06F3/041 , G06F3/0412 , G06F3/0416 , G06F3/044 , G09G3/36 , G09G2320/0223
Abstract: A touch sensing apparatus according to an embodiment of the present invention includes: a display device including a plurality of pixels and displaying an image; a touch screen including a plurality of touch sensors and being included in the display device; display panel driving circuits for driving the display device; a touch sensing circuit for applying a driving signal to the touch sensors to sense a voltage or capacitance variation in the touch sensors; a controller for time-dividing a first frame period into a first driving period for displaying an image on the display device and a second driving period for sensing the touch sensors; and a reset control circuit for controlling operations of the display panel driving circuits with a reset enable signal to initialize the pixels of the display device to an equivalent reset voltage at predetermined intervals between the first driving period and the second driving period.
Abstract translation: 根据本发明的实施例的触摸感测装置包括：显示装置，包括多个像素并显示图像; 包括多个触摸传感器并包括在所述显示装置中的触摸屏; 用于驱动显示装置的显示面板驱动电路; 触摸感测电路，用于向触摸传感器施加驱动信号以感测触摸传感器中的电压或电容变化; 控制器，用于将第一帧周期时分为用于在所述显示装置上显示图像的第一驱动周期和用于感测所述触摸传感器的第二驱动周期; 以及复位控制电路，用于通过复位使能信号控制显示面板驱动电路的操作，以在第一驱动周期和第二驱动周期之间以预定间隔将显示装置的像素初始化为等效复位电压。
-
公开(公告)号：US10268285B2
公开(公告)日：2019-04-23
申请号：US15249113
申请日：2016-08-26
Applicant: LG Display Co., Ltd.
Inventor： Doyoung Jung , Hyunguk Jang , Sungchul Kim , Sanghyuck Bae , Sungsu Han , Suyun Ju
IPC: G06F3/0354 , G06F3/041 , G06F3/0487 , G06F3/044
Abstract: An active stylus pen generates a pen driving signal synchronized with a touchscreen driving signal received from a touchscreen and outputs the pen driving signal to the touchscreen. The active stylus pen includes a pressure sensing unit for sensing pressure when touching the touchscreen to generate writing pressure information and a signal processor for modulating the pen driving signal in response to the signal level of the writing pressure information and outputs the modulated signal as a pen driving signal in which the writing pressure information has been reflected.
-
公开(公告)号：US10203782B2
公开(公告)日：2019-02-12
申请号：US15215769
申请日：2016-07-21
Applicant: LG Display Co., Ltd.
Inventor： Doyoung Jung , Hyunguk Jang , Sungchul Kim , Sanghyuck Bae , Sungsu Han , Suyun Ju
IPC: G06F3/045 , G06F3/038 , G06F3/044 , G06F3/0354
Abstract: A touch sensing system comprises a touchscreen with a plurality of touch electrodes, to which a touchscreen driving signal is applied, and a stylus pen that generates a pen driving signal based on the touchscreen driving signal and sends the same to the touchscreen. The stylus pen comprises: an amplifier that amplifies the touchscreen driving signal to generate an amplified signal; a comparator that compares the amplified signal with a preset reference voltage to generate a comparator output signal; and a signal processor that measures the pulse width of the comparator output signal, adjusts an amount of delay based on a measurement, and determines an output timing of the pen driving signal based on an adjusted amount of delay to synchronize the pen driving signal with the touchscreen driving signal.
-
公开(公告)号：US11803271B2
公开(公告)日：2023-10-31
申请号：US17974181
申请日：2022-10-26
Applicant: LG Display Co., Ltd.
Inventor： Yangsik Lee , Sanghyuck Bae
CPC classification number: G06F3/041662 , G06F3/0412 , G06F3/0446 , G06F3/04164
Abstract: A touch display device can include first and second touch electrodes spaced apart from each other, a first touch line to which a first touch driving signal is applied, a first touch driving transistor configured to control a connection between the first touch electrode and the first touch line, and a second touch driving transistor configured to control a connection between the second touch electrode and the first touch line. As the first touch driving transistor is turned on, a first touch driving signal can be supplied to the first touch electrode through the first touch line, and as the second touch driving transistor is turned on, the first touch driving signal can be supplied to the second touch electrode through the first touch line.
-
公开(公告)号：US10691228B2
公开(公告)日：2020-06-23
申请号：US15837459
申请日：2017-12-11
Applicant: LG DISPLAY CO., LTD.
Inventor： Sanghyuck Bae , Cheolse Kim
IPC: G06F3/044 , G06F3/0354 , G06F3/041 , G06F3/038 , G06F3/0488
Abstract: An electronic device having a touch sensor and a method of driving the same are disclosed. The electronic device includes a display panel having a touch screen, a touch driver configured to drive the touch screen, a timing controller configured to control the display panel and the touch driver, and a stylus pen configured to provide a signal to the touch screen. The timing controller, in order to synchronize with the stylus pen, generates and outputs a control signal having an extended vertical blanking period in which a vertical blanking period is extended, and a display driving period and a touch sensor driving period which alternate in two or more times for one frame.
-
Patent Agency Ranking
公开(公告)号：US09588615B2
公开(公告)日：2017-03-07
申请号：US14505903
申请日：2014-10-03
Applicant: LG DISPLAY CO., LTD.
Inventor： Sanghyuck Bae
CPC classification number: G06F3/0416 , G02F1/13338 , G06F3/0412 , G06F3/044
Abstract: A touch and gesture sensing system and a driving method thereof are provided. The touch and gesture sensing system comprises: a display panel comprising a pixel array, sensors, and sensor lines connected to the sensors; a display driving circuit that writes a data voltage to the pixels of the pixel array during a display driving period; and a sensor driving circuit that applies a touch sensor driving signal to the sensors to sense touch input during a touch sensing period and applies a gesture sensor driving signal to the sensors to sense gesture input during a gesture sensing period.
Abstract translation: 提供了触摸和手势感测系统及其驱动方法。 触摸和手势感测系统包括：显示面板，包括连接到传感器的像素阵列，传感器和传感器线; 显示驱动电路，其在显示驱动期间将数据电压写入所述像素阵列的像素; 以及传感器驱动电路，其将触摸传感器驱动信号施加到所述传感器以在触摸感测时段期间感测触摸输入，并且向所述传感器施加手势传感器驱动信号以在手势感测时段期间感测手势输入。
-
公开(公告)号：US10474280B2
公开(公告)日：2019-11-12
申请号：US15381410
申请日：2016-12-16
Applicant: LG Display Co., Ltd.
Inventor： Hyunguk Jang , Cheolse Kim , Sungchul Kim , Sanghyuck Bae , Sungsu Han , Suyun Ju , Doyoung Jung
IPC: G06F3/041 , G06F3/0354 , G06F3/038 , G06F3/044
Abstract: A touch sensing system is disclosed. The touch sensing system includes an active stylus pen that generates a first pen driving signal for detecting a touch input in synchronization with a touch driving signal input from a touch screen and a second pen driving signal for detecting an additional input related to an additional function of the active stylus pen in a touch driving period and outputs the first and second pen driving signals to the touch screen; and a touch driving device that applies the touch driving signal to the touch screen, senses the first pen driving signal in a first period of the touch driving period, and senses the second pen driving signal in a second period of the touch driving period.
-
公开(公告)号：US10324547B2
公开(公告)日：2019-06-18
申请号：US15384766
申请日：2016-12-20
Applicant: LG Display Co., Ltd.
Inventor： Sungsu Han , Hyunguk Jang , Sungchul Kim , Sanghyuck Bae , Suyun Ju , Doyoung Jung
IPC: G06F3/038 , G06F3/041 , G06F3/0354 , G06F3/044
Abstract: An active stylus pen according to the present invention includes a first signal processor configured to generate a touch frame recognition signal for discriminating touch frames on the basis of sub-pulses corresponding to part of each touchscreen driving signal received from a touchscreen and a second signal processor configured to generate a pen driving signal synchronized with main pulses of each touchscreen driving signal other than the sub-pulses and to vary the pen driving signal in units of a touch frame according to the touch frame recognition signal such that additional pen information is reflected in the pen driving signal.
-
公开(公告)号：US10241597B2
公开(公告)日：2019-03-26
申请号：US15392783
申请日：2016-12-28
Applicant: LG DISPLAY CO., LTD.
Inventor： Doyoung Jung , Cheolse Kim , Buyeol Lee , Hyunguk Jang , Sanghyuck Bae
IPC: G06F3/01 , G06F3/03 , G06F3/041 , G06F3/044 , G06F3/046 , G06F3/043 , G06F3/048 , H01Q1/24 , G06F3/038 , G06F3/0354
Abstract: An active stylus pen is insensitive to external noise and has enhanced sensing performance with respect to an uplink signal input from a touch screen. The active stylus pen includes a housing connected to a ground, a conductive tip protruding outwardly from one side of the housing and brought into contact with a touch screen, a conductor layer surrounding an outer surface of the housing with an insulator interposed therebetween, a pen driving circuit connected to the conductor layer, and a switch connecting the conductor layer and the pen driving circuit. The pen driving circuit is cased by the housing, receives an uplink signal and a touch sensor driving signal from the touch screen, generates a pen driving signal synchronized with the touch sensor driving signal and outputs the generated pen driving signal to the touch screen through the conductive tip.
-
公开(公告)号：US10002590B2
公开(公告)日：2018-06-19
申请号：US14457999
申请日：2014-08-12
Applicant: LG DISPLAY CO., LTD.
Inventor： Sanghyuck Bae , Juhan Kim , Jinseong Kim , Seongkyu Kang
CPC classification number: G09G5/18 , G02F2001/13312 , G06F3/017 , G06F3/0416 , G06F3/044 , G09G3/3275 , G09G3/3685 , G09G3/3688
Abstract: A display device and a method for driving the same are discussed. The display device includes a display panel including a common electrode commonly connected to pixels, a display driving circuit for applying a data voltage to the pixels during a vertical active time, and a sensor driving circuit which applies a gesture sensing driving signal to the common electrode during a vertical blank time and senses a gesture input.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.016 seconds)
