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公开(公告)号：US09965109B2
公开(公告)日：2018-05-08
申请号：US14291283
申请日：2014-05-30
Applicant: LG Display Co., Ltd.
Inventor： Hyeongwon Kang , Beomjin Kim
CPC classification number: G06F3/044 , G06F3/0416
Abstract: A touch screen driver includes a touch screen comprising Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at the crossings of the Tx channels and the Rx channels; a Tx driving circuit for supplying a Tx driving pulse to the Tx channels; an Rx driving circuit comprising an offset charge compensation circuit that equally compensates for the amount of offset charge included in the voltages of the sensor nodes supplied through the Rx channels and a sampling circuit that samples the offset-compensated voltages of the sensor nodes in response to an Rx sampling clock and converts the sampled voltages into digital data; and a touch controller that analyzes the digital data input from the Rx driving circuit by a preset touch recognition algorithm and outputs touch data including coordinate information of a touch position.
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公开(公告)号：US09513742B2
公开(公告)日：2016-12-06
申请号：US14970313
申请日：2015-12-15
Applicant: LG Display Co., Ltd.
Inventor： Beomjin Kim , Sunghoon On
CPC classification number: G06F3/0418 , G05F1/463 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04111
Abstract: A touch sensing system includes a charge distributor, a pre-amplifier, an analog-to-digital converter (ADC), and a temperature compensating device. The temperature compensating device varies one or more of a first reference voltage supplied to the charge distributor, a second reference voltage supplied to the pre-amplifier, and the capacitance of the charge distributor, in response to temperature data from a temperature sensor.
Abstract translation: 触摸感测系统包括电荷分配器，前置放大器，模数转换器（ADC）和温度补偿装置。 温度补偿装置响应于来自温度传感器的温度数据改变提供给电荷分配器的第一参考电压，提供给前置放大器的第二参考电压和电荷分配器的电容中的一个或多个。
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3.发明授权公开(公告)号：US09927930B2
公开(公告)日：2018-03-27
申请号：US14585515
申请日：2014-12-30
Applicant: LG Display Co., Ltd.
Inventor： Dukhyo Lee , Beomjin Kim
IPC: G06F3/044 , G06F3/041 , G02F1/1333
CPC classification number: G06F3/044 , G02F1/13338 , G06F3/0412 , G06F3/0416
Abstract: A touch sensing device includes a panel including pixels disposed in a matrix form defined by data lines and gate lines, the pixels including thin film transistors (TFTs). The touch sensing device includes at least one touch sensor having a mutual capacitance and a sensor driving circuit configured to receive an electric charge from the mutual capacitance. The touch sensing device further includes a display driving circuit configured to supply a first parasitic capacitance suppressing signal to the data lines and a second parasitic capacitance suppressing signal to the gate lines during a touch sensor driving period.
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公开(公告)号：US09524054B2
公开(公告)日：2016-12-20
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，所述第二采样信号具有与所述第一采样相同的极性 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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5.发明授权公开(公告)号：US09430088B1
公开(公告)日：2016-08-30
申请号：US14968474
申请日：2015-12-14
Applicant: LG Display Co., Ltd.
Inventor： Dukhyo Lee , Beomjin Kim
CPC classification number: G06F3/0416 , G06F3/044 , G06F2203/04103
Abstract: A touch sensor driving device comprises: a plurality of touch sensing circuits that receive touch sensor sensing signals from touch sensors of a touchscreen through a plurality of receiving channels; and a plurality of discharge circuits connected between the receiving channels and the touch sensing circuits to receive charge eliminating pulse signals and reduce the swing amplitude of the touch sensor sensing signals input into the touch sensing circuits.
Abstract translation: 触摸传感器驱动装置包括：多个触摸感测电路，其通过多个接收通道从触摸屏的触摸传感器接收触摸传感器感测信号; 以及连接在接收通道和触摸感测电路之间的多个放电电路，以接收电荷消除脉冲信号并减小输入到触摸感测电路中的触摸传感器感测信号的摆幅。
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Patent Agency Ranking
公开(公告)号：US20160098151A1
公开(公告)日：2016-04-07
申请号：US14970313
申请日：2015-12-15
Applicant: LG Display Co., Ltd.
Inventor： Beomjin Kim , Sunghoon On
CPC classification number: G06F3/0418 , G05F1/463 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04111
Abstract: A touch sensing system includes a charge distributor, a pre-amplifier, an analog-to-digital converter (ADC), and a temperature compensating device. The temperature compensating device varies one or more of a first reference voltage supplied to the charge distributor, a second reference voltage supplied to the pre-amplifier, and the capacitance of the charge distributor, in response to temperature data from a temperature sensor.
Abstract translation: 触摸感测系统包括电荷分配器，前置放大器，模数转换器（ADC）和温度补偿装置。 温度补偿装置响应于来自温度传感器的温度数据改变提供给电荷分配器的第一参考电压，提供给前置放大器的第二参考电压和电荷分配器的电容中的一个或多个。
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公开(公告)号：US20140354592A1
公开(公告)日：2014-12-04
申请号：US14291283
申请日：2014-05-30
Applicant: LG DISPLAY CO., LTD.
Inventor： Hyeongwon Kang , Beomjin Kim
IPC: G06F3/044
CPC classification number: G06F3/044 , G06F3/0416
Abstract: A touch screen driver includes a touch screen comprising Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at the crossings of the Tx channels and the Rx channels; a Tx driving circuit for supplying a Tx driving pulse to the Tx channels; an Rx driving circuit comprising an offset charge compensation circuit that equally compensates for the amount of offset charge included in the voltages of the sensor nodes supplied through the Rx channels and a sampling circuit that samples the offset-compensated voltages of the sensor nodes in response to an Rx sampling clock and converts the sampled voltages into digital data; and a touch controller that analyzes the digital data input from the Rx driving circuit by a preset touch recognition algorithm and outputs touch data including coordinate information of a touch position.
Abstract translation: 触摸屏驱动器包括触摸屏，其包括Tx信道，穿过Tx信道的Rx信道和形成在Tx信道和Rx信道的交叉点处的传感器节点; Tx驱动电路，用于向Tx信道提供Tx驱动脉冲; Rx驱动电路，其包括偏移电荷补偿电路，其补偿包括在通过Rx通道提供的传感器节点的电压中的偏移电荷的量;以及采样电路，其对响应于传感器节点的偏移补偿电压进行采样 Rx采样时钟，并将采样电压转换成数字数据; 以及触摸控制器，其通过预设的触摸识别算法分析从Rx驱动电路输入的数字数据，并输出包括触摸位置的坐标信息的触摸数据。
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公开(公告)号：US10939514B2
公开(公告)日：2021-03-02
申请号：US16002197
申请日：2018-06-07
Applicant: LG Display Co., Ltd.
Inventor： Gyungmin Kim , Beomjin Kim
IPC: H05B33/10 , H01L51/56 , G09G3/3233 , G09G3/30
Abstract: An electroluminescence display and a method for driving the same are provided to enhance the aging performance of the electroluminescence display. The electroluminescence display comprises: a display panel on which a plurality of pixels each comprising an electroluminescence element; and a power supply part that outputs a drive voltage for driving the pixels, wherein an externally applied aging signal is applied to a cathode of the electroluminescence element to perform aging on the display panel.
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公开(公告)号：US09857914B2
公开(公告)日：2018-01-02
申请号：US14866615
申请日：2015-09-25
Applicant: LG Display Co., Ltd.
Inventor： Beomjin Kim , Sunghoon On
CPC classification number: G06F3/0418 , G05F1/463 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04111
Abstract: A touch sensing system includes a charge distributor, a pre-amplifier, an analog-to-digital converter (ADC), and a temperature compensating device. The temperature compensating device varies one or more of a first reference voltage supplied to the charge distributor, a second reference voltage supplied to the pre-amplifier, and the capacitance of the charge distributor, in response to temperature data from a temperature sensor.
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10.发明授权Method and circuit for driving touch sensors to reduce noise measurement time and display device using the same 有权用于驱动触摸传感器以减少噪声测量时间的方法和电路以及使用其的显示装置公开(公告)号：US09569035B1
公开(公告)日：2017-02-14
申请号：US14981313
申请日：2015-12-28
Applicant: LG Display Co., Ltd.
Inventor： Dukhyo Lee , Jaehun Jun , Hyeongwon Kang , Beomjin Kim
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.
Abstract translation: 这里公开了用于驱动触摸传感器的方法和电路以及使用其的显示装置。 驱动触摸传感器的方法包括将触摸传感器驱动信号提供给触摸传感器或放大器，并且在触摸输入感测部分期间感测触摸输入，并且在噪声测量期间测量通过触摸传感器接收的电流噪声而不用触摸传感器驱动信号 一部分。
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