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公开(公告)号：US20160147368A1
公开(公告)日：2016-05-26
申请号：US14946676
申请日：2015-11-19
Applicant: LG Display Co., Ltd.
Inventor： Beomjin Kim , Dukhyo Lee
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044 , G09G3/3696
Abstract: A touch sense circuit comprises a first sampling circuit to sample a touch sense signal during a first period of a touch drive signal in which the touch drive signal is at a first level, to generate a first sampled signal; a second sampling circuit to sample the touch sense signal during a second period of the touch drive signal in which the touch drive signal is at a second level, to generate a second sampled signal, the second sampled signal in a same polarity as the first sampled signal; and an integrator including an input terminal and an output terminal, both the first sampled signal and the second sampled signal being input to the input terminal of the integrator and integrated to generate an output signal at the output terminal of the integrator, the output signal being used to detect a touch input.
Abstract translation: 触摸感测电路包括：第一采样电路，用于在其中触摸驱动信号处于第一电平的触摸驱动信号的第一周期期间对触摸感测信号进行采样，以产生第一采样信号; 第二采样电路，用于在所述触摸驱动信号处于第二电平的所述触摸驱动信号的第二周期期间对所述触摸感测信号进行采样，以产生第二采样信号，所述第二采样信号的极性与所述第一采样 信号; 以及包括输入端子和输出端子的积分器，第一采样信号和第二采样信号都被输入到积分器的输入端，并被积分以在积分器的输出端产生输出信号，输出信号为 用于检测触摸输入。
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Patent Agency Ranking
公开(公告)号：US20140168148A1
公开(公告)日：2014-06-19
申请号：US14096013
申请日：2013-12-04
Applicant: LG Display Co., Ltd.
Inventor： Hyeongwon Kang , Beomjin Kim
IPC: G06F3/044
CPC classification number: G06F3/044 , G06F1/12 , G06F3/0416
Abstract: A touch screen driver includes a touch screen including Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at crossings of the Tx channels and the Rx channels, a Tx driving circuit supplying a driving pulse to the Tx channels, an Rx driving circuit which samples voltages of the sensor nodes supplied through the Rx channels in response to Rx sampling clocks and converts the sampled voltages into digital data, and a touch controller which modulates the Rx sampling clocks based on an RC delay deviation between the Rx channels, supplies the modulated Rx sampling clocks to the Rx driving circuit, differently controls sampling times of the Rx channels, and analyzes the digital data using a previously determined touch recognition algorithm.
Abstract translation: 触摸屏驱动器包括触摸屏，包括Tx通道，穿过Tx通道的Rx通道，以及在Tx通道和Rx通道的交叉处形成的传感器节点，向Tx通道提供驱动脉冲的Tx驱动电路，Rx驱动 电路，其响应于Rx采样时钟采样通过Rx通道提供的传感器节点的电压，并将采样的电压转换成数字数据;以及触摸控制器，其基于Rx通道之间的RC延迟偏差来调制Rx采样时钟 对Rx驱动电路的调制Rx采样时钟不同地控制Rx通道的采样时间，并且使用先前确定的触摸识别算法分析数字数据。
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公开(公告)号：US10198124B2
公开(公告)日：2019-02-05
申请号：US15393166
申请日：2016-12-28
Applicant: LG Display Co., Ltd.
Inventor： Dukhyo Lee , Jaehun Jun , Hyeongwon Kang , Beomjin Kim
Abstract: Disclosed herein are a method and circuit for driving touch sensors and a display device using the same. A method of driving touch sensors includes supplying a touch sensor driving signal to the touch sensors or an amplifier and sensing a touch input during a touch input sensing portion and measuring current noise received through the touch sensors without the touch sensor driving signal during a noise measurement portion.
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公开(公告)号：US09927936B2
公开(公告)日：2018-03-27
申请号：US15148217
申请日：2016-05-06
Applicant: LG Display Co., Ltd.
Inventor： Hyeongwon Kang , Beomjin Kim
CPC classification number: G06F3/044 , G06F1/12 , G06F3/0416
Abstract: A touch screen driver includes a touch screen including Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at crossings of the Tx channels and the Rx channels, a Tx driving circuit supplying a driving pulse to the Tx channels, an Rx driving circuit which samples voltages of the sensor nodes supplied through the Rx channels in response to Rx sampling clocks and converts the sampled voltages into digital data, and a touch controller which modulates the Rx sampling clocks based on an RC delay deviation between the Rx channels, supplies the modulated Rx sampling clocks to the Rx driving circuit, differently controls sampling times of the Rx channels, and analyzes the digital data using a previously determined touch recognition algorithm.
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公开(公告)号：US09904404B2
公开(公告)日：2018-02-27
申请号：US14875502
申请日：2015-10-05
Applicant: LG Display Co., Ltd.
Inventor： Hyeongwon Kang , Jaehun Jun , Dukhyo Lee , Beomjin Kim
CPC classification number: G06F3/0416 , G06F1/3262 , G06F1/3265 , G06F3/0412 , G06F3/044 , G06F2203/04112 , Y02D10/153
Abstract: A display device that comprises a plurality of touch electrodes and a touchscreen driving circuit coupled to the plurality of touch electrodes. In a normal display mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using self capacitance touch sensing. In a sleep mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using mutual capacitance touch sensing.
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公开(公告)号：US09348472B2
公开(公告)日：2016-05-24
申请号：US14096013
申请日：2013-12-04
Applicant: LG Display Co., Ltd.
Inventor： Hyeongwon Kang , Beomjin Kim
CPC classification number: G06F3/044 , G06F1/12 , G06F3/0416
Abstract: A touch screen driver includes a touch screen including Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at crossings of the Tx channels and the Rx channels, a Tx driving circuit supplying a driving pulse to the Tx channels, an Rx driving circuit which samples voltages of the sensor nodes supplied through the Rx channels in response to Rx sampling clocks and converts the sampled voltages into digital data, and a touch controller which modulates the Rx sampling clocks based on an RC delay deviation between the Rx channels, supplies the modulated Rx sampling clocks to the Rx driving circuit, differently controls sampling times of the Rx channels, and analyzes the digital data using a previously determined touch recognition algorithm.
Abstract translation: 触摸屏驱动器包括触摸屏，包括Tx通道，穿过Tx通道的Rx通道，以及在Tx通道和Rx通道的交叉处形成的传感器节点，向Tx通道提供驱动脉冲的Tx驱动电路，Rx驱动 电路，其响应于Rx采样时钟采样通过Rx通道提供的传感器节点的电压，并将采样的电压转换成数字数据;以及触摸控制器，其基于Rx通道之间的RC延迟偏差来调制Rx采样时钟 对Rx驱动电路的调制Rx采样时钟不同地控制Rx通道的采样时间，并且使用先前确定的触摸识别算法分析数字数据。
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