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公开(公告)号：US09791986B2
公开(公告)日：2017-10-17
申请号：US14804591
申请日：2015-07-21
发明人： Hyunkyu Ouh , Bumsoo Kim , Junchul Park , Jinchul Lee , Yoonkyung Choi
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0418
摘要： A touch display device configured to drive a signal line in a first plurality of steps during a line-sensing period and adjust an offset capacitance in a second plurality of steps corresponding to the first plurality of steps.
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2.发明授权公开(公告)号：US09973199B2
公开(公告)日：2018-05-15
申请号：US15199010
申请日：2016-06-30
发明人： San-Ho Byun , Chadong Kim , Jinchul Lee , Bumsoo Kim , Junchul Park , Kyeonggon Lee
摘要： A touch processor circuit includes a capacitance-to-voltage converter and an analog-to-digital converter. The capacitance-to-voltage converter converts an input signal transmitted from a touch sensor into a conversion signal corresponding to a capacitance of the touch sensor. The analog-to-digital converter digitizes the conversion signal transmitted from the capacitance-to-voltage converter and generates a digital value. The analog-to-digital converter includes a first converter, a second converter, and a combination logic circuit. The first converter calculates upper bits of the digital value based on the conversion signal during a first time period. The second converter calculates lower bits of the digital value based on a residue component signal transmitted from the first converter during a second time period. The combination logic circuit combines the upper bits and the lower bits and generates the digital value.
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公开(公告)号：US09898149B2
公开(公告)日：2018-02-20
申请号：US14741940
申请日：2015-06-17
发明人： Sanghyub Kang , San-ho Byun , Jinchul Lee , Chadong Kim , Bumsoo Kim , Junchul Park , Hojin Park , Hyunkyu Ouh , Kyunghoon Lee , Michael Choi , YoonKyung Choi
IPC分类号： G06F3/044 , G06F3/041 , G06F1/16 , G06F3/01 , G06F3/0354
CPC分类号： G06F3/044 , G06F1/163 , G06F3/011 , G06F3/03547 , G06F3/0418 , G06F2203/0339 , G06F2203/04108
摘要： A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.
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公开(公告)号：US11656729B2
公开(公告)日：2023-05-23
申请号：US17590008
申请日：2022-02-01
发明人： Junchul Park , Jonghee Na , Gwangho Nam , Taekon Yu , Hyunwook Lim , Woohyuk Jang , Bumsoo Kim , Byunghwee Park , Wongab Jung , Yoon-Kyung Choi
CPC分类号： G06F3/0445 , G06F3/0412 , G06F3/0418 , G06F3/0446 , G06F3/04164 , G06F3/04166
摘要： A touch sensor controller for driving a touch sensor that is stacked on a display panel and includes driving electrodes and receiving electrodes crossing the driving electrodes, the touch sensor controller including: a driving circuit configured to sequentially provide driving signals to the driving electrodes; a read-out circuit configured to, in response to the driving signals, generate touch data based on first sensing signals received from the receiving electrodes and generate display noise data based on a second sensing signal received from a first driving electrode to which a driving signal of the driving signals is not applied from among the driving electrodes; and a touch processor configured to determine whether a touch input has occurred on the touch sensor based on the touch data and the display noise data.
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5.发明授权公开(公告)号：US09710118B2
公开(公告)日：2017-07-18
申请号：US14750079
申请日：2015-06-25
发明人： Junchul Park , Bumsoo Kim , Hyunkyu Ouh , Sang-Hyub Kang , Chadong Kim , Sanho Byun , Jinchul Lee , Yoon-Kyung Choi
CPC分类号： G06F3/044 , G06F3/0416 , G06F3/0418
摘要： Provided are a semiconductor device and a semiconductor system, which can increase immunity against noises through tertiary correlated double sampling (CDS). The semiconductor device includes an amplifier that receives noise and a driving signal, resets for each predetermined period of the driving signal and samples the noise to generate first sampled noise. The first sampled noise includes multiple noise differences each occurring between consecutive reset points. A sampler performs second sampling and third sampling on the first sampled noise and performs fourth sampling on the second and third sampled noises. The first sampled noise includes first to third noise differences, the second sampled noise is a difference between the first and second noise differences, the third sampled noise is a difference between the second and third noise differences, and the fourth sampled noise is a difference between the second and third sampled noises.
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6.发明授权Digital filter, touch sense device including the digital filter, and method for performing the digital filtering 有权数字滤波器，包括数字滤波器的触摸感测装置以及用于执行数字滤波的方法公开(公告)号：US09292125B2
公开(公告)日：2016-03-22
申请号：US14185624
申请日：2014-02-20
发明人： Ki-Duk Kim , Yoonkyung Choi , Junchul Park , San-Ho Byun , Minchul Lee , Ji-Sung Jung
CPC分类号： G06F3/0416 , G06F3/0412 , G06F3/044 , G06F2203/04112 , H03M3/504
摘要： A touch sensing device including digital filter is provided. The touch sensing device includes a touch panel and a touch sensor configured to sensing a touch through the touch panel. The touch sensor includes a plurality of sensing units connected to the touch panel through a plurality of sensing lines. Each of the plurality of sensing units includes a digital filter configured to generate a valid filtered value at a time and invalid filtered value at other times by performing an operation on a plurality of input digital samples and a plurality of filter coefficients.
摘要翻译： 提供了包括数字滤波器的触摸感测装置。 触摸感测装置包括触摸面板和被配置为感测通过触摸面板的触摸的触摸传感器。 触摸传感器包括通过多个感测线连接到触摸面板的多个感测单元。 多个感测单元中的每一个包括数字滤波器，其被配置为通过对多个输入数字样本和多个滤波器系数执行操作来一次生成有效的滤波值并且在其它时间产生无效滤波值。
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公开(公告)号：US12067201B2
公开(公告)日：2024-08-20
申请号：US18200402
申请日：2023-05-22
发明人： Junchul Park , Jonghee Na , Gwangho Nam , Taekon Yu , Hyunwook Lim , Woohyuk Jang , Bumsoo Kim , Byunghwee Park , Wongab Jung , Yoon-Kyung Choi
IPC分类号： G06F3/044 , G06F3/041 , G09G3/3233
CPC分类号： G06F3/0445 , G06F3/0412 , G06F3/04164 , G06F3/04166 , G06F3/0418 , G06F3/0446 , G09G3/3233 , G09G2320/0223 , G09G2320/0295 , G09G2354/00
摘要： A touch sensor controller for driving a touch sensor that is stacked on a display panel and includes driving electrodes and receiving electrodes crossing the driving electrodes, the touch sensor controller including: a driving circuit configured to sequentially provide driving signals to the driving electrodes; a read-out circuit configured to, in response to the driving signals, generate touch data based on first sensing signals received from the receiving electrodes and generate display noise data based on a second sensing signal received from a first driving electrode to which a driving signal of the driving signals is not applied from among the driving electrodes; and a touch processor configured to determine whether a touch input has occurred on the touch sensor based on the touch data and the display noise data.
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公开(公告)号：US10705654B2
公开(公告)日：2020-07-07
申请号：US15675398
申请日：2017-08-11
发明人： Bumsoo Kim , Chadong Kim , Junchul Park , Kyeonggon Lee , YoonKyung Choi
摘要： An operating method of a touch driving integrated circuit (TDI) sensing a user touch on a touch panel includes: transmitting a first touch signal through a transmission line connected with the touch panel; receiving a first sensing signal through a reception line connected to the touch panel; receiving a first display noise through a detection line connected to the touch panel; and offsetting a noise included in the first sensing signal by using the first display noise.
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公开(公告)号：US20160124544A1
公开(公告)日：2016-05-05
申请号：US14741940
申请日：2015-06-17
发明人： Sanghyub Kang , San-ho Byun , Jinchul Lee , Chadong Kim , Bumsoo Kim , Junchul Park , Hojin Park , Hyunkyu Ouh , Kyunghoon Lee , Michael Choi , Yoonkyung Choi
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F1/163 , G06F3/011 , G06F3/03547 , G06F3/0418 , G06F2203/0339 , G06F2203/04108
摘要： A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.
摘要翻译： 用于触敏屏幕的触摸模拟前端（AFE）可以包括被配置为对触摸面板和被配置为感测触摸面板的接收器充电的发射器。 接收器可以包括被配置为将从触摸面板接收的电容的变化转换为电压信号的电荷 - 电压（C2V）转换器，被配置为将电压信号转换为差分信号的相关双采样（CDS）块，以及 对差分信号的正和负信号进行采样，以及积分器，被配置为累积采样的正和负信号之间的差。
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