公开(公告)号：US20170108993A1

公开(公告)日：2017-04-20

申请号：US15393166

申请日：2016-12-28

Applicant: LG Display Co., Ltd.

Inventor： Dukhyo LEE ,  Jaehun JUN ,  Hyeongwon KANG ,  Beomjin KIM

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

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.

公开(公告)号：US20160253005A1

公开(公告)日：2016-09-01

申请号：US15148217

申请日：2016-05-06

Applicant: LG Display Co., Ltd.

Inventor： Hyeongwon KANG ,  Beomjin KIM

IPC: G06F3/044 ,  G06F1/12 ,  G06F3/041

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。

公开(公告)号：US20160098141A1

公开(公告)日：2016-04-07

申请号：US14875502

申请日：2015-10-05

Applicant: LG Display Co., Ltd.

Inventor： Hyeongwon KANG ,  Jaehun JUN ,  Dukhyo LEE ,  Beomjin KIM

IPC: G06F3/041 ,  G06F3/044

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.

Abstract translation: 一种显示装置，包括耦合到所述多个触摸电极的多个触摸电极和触摸屏驱动电路。 在显示装置的正常显示模式中，触摸屏驱动电路使用自身电容触摸感测通过多个触摸电极来感测触摸。 在显示装置的睡眠模式中，触摸屏驱动电路使用互电容触摸感测来感测经由多个触摸电极的触摸。

公开(公告)号：US20150084923A1

公开(公告)日：2015-03-26

申请号：US14495163

申请日：2014-09-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyeongwon KANG

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: A touch screen driving device includes a touch screen including Tx channels, Rx channels, and sensor nodes formed at crossings of the Tx channels and the Rx channels, a Tx driving circuit supplying a Tx driving pulse to the Tx channels, sensing units sampling voltages of the sensor nodes supplied through the Rx channels, a multiplexer (mux) array including mux switches, each of which is cross-coupled with output terminals of the sensing units adjacent to each mux switch, an analog-to-digital converter converting an analog sampling signal received from the mux array into digital data, an average unit which averages the digital data and removes noise included in the digital data, and a touch controller which analyzes the digital data, in which the noise is removed, using a touch recognition algorithm and outputs touch data including coordinate information of a touch position.

Abstract translation: 触摸屏驱动装置包括触摸屏，其包括Tx通道，Rx通道和在Tx通道和Rx通道的交叉处形成的传感器节点，Tx驱动电路向Tx通道提供Tx驱动脉冲，感测单元的采样电压 通过Rx通道提供的传感器节点，包括多路复用器（多路复用器）阵列的多路复用器（多路复用器）阵列，每个复用器（多路复用器）阵列与每个复用器开关相邻的感测单元的输出端交叉耦合，转换模拟采样 将从多路复用器阵列接收的信号转换成数字数据，平均数字数据平均值并消除包含在数字数据中的噪声;以及触摸控制器，其使用触摸识别算法分析噪声被去除的数字数据， 输出包括触摸位置的坐标信息的触摸数据。