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1. 发明授权

US09437169B2 Touch panel control circuit and semiconductor integrated circuit using the same 有权
标题翻译：触摸屏控制电路和半导体集成电路采用相同的方式
公开(公告)号：US09437169B2
公开(公告)日：2016-09-06
申请号：US14567386
申请日：2014-12-11
申请人： Synaptics Display Devices GK
发明人： Takayuki Noto , Akihito Akai
IPC分类号： G06F3/044 , G09G5/18 , G06F3/041
CPC分类号： G09G5/18 , G06F3/0416 , G06F3/044
摘要： A touch panel control circuit includes a drive circuit that drives Y electrodes of a touch panel, and a detection circuit that is connected to X electrodes and detects a capacitance value of an intersection capacitor. The drive circuit applies a plurality of pulses to the Y electrodes in a predetermined period. The detection circuit includes a switched capacitor circuit capable of operating with respect to an input signal from the X electrodes in synchronization with the plurality of pulses, and an integration circuit that is connected to an output of the switched capacitor circuit and operates in synchronization with the pulses. The switched capacitor circuit is allowed to operate as a filter, and the switched capacitor circuit is set to have characteristics which have a maximum gain at a direct current and a frequency of a corresponding pulse and in which the gain is suppressed at a frequency therebetween.
摘要翻译：触摸面板控制电路包括驱动触摸面板的Y电极的驱动电路和与X电极连接并检测交叉电容器的电容值的检测电路。驱动电路在预定时间内向Y电极施加多个脉冲。检测电路包括能够与多个脉冲同步地来自X电极的输入信号进行操作的开关电容器电路，以及连接到开关电容器电路的输出并与其同步工作的积分电路脉冲。开关电容电路被允许作为滤波器工作，并且开关电容器电路被设置为具有在直流电流和相应脉冲的频率下具有最大增益的特性，并且其中增益被抑制在它们之间的频率处。

2. 发明授权

US09519385B2 Semiconductor device and electronic device 有权
标题翻译：半导体器件和电子器件
公开(公告)号：US09519385B2
公开(公告)日：2016-12-13
申请号：US14085893
申请日：2013-11-21
申请人： Synaptics Display Devices GK
发明人： Akihito Akai , Tatsuya Ishii , Toshikazu Tachibana , Toshiyuki Takani
IPC分类号： G06F3/044 , G06F3/041
CPC分类号： G06F3/044 , G06F3/0416 , G06F2203/04112
摘要： The touch panel controller is connected with a touch panel having a plurality of drive electrodes, a plurality of detection electrodes, and a plurality of capacitance components formed at intersections of the drive and detection electrodes. A two-edge detection mode is adopted for the touch panel controller, in which signals arising on each detection electrode in synchronization with rising and falling edges of a drive pulse output to the drive electrodes, and alternately changing in polarity are accumulated in the integration circuit in terms of absolute value components. The integration circuit switches the connection of the integration capacitance between an input and an output before the drive pulse edge changing. The touch panel controller contributes to the shortening of the time for touch detection by the touch panel and the increase of the accuracy of touch detection.
摘要翻译：触摸面板控制器与具有多个驱动电极，多个检测电极和形成在驱动和检测电极的交点处的多个电容部件的触摸面板连接。对于触摸面板控制器采用双边检测模式，其中在每个检测电极上产生的信号与驱动电极输出的驱动脉冲的上升沿和下降沿同步并且极性交替变化积累在积分电路中在绝对值组件方面。积分电路在驱动脉冲边沿变化之前切换输入和输出之间的积分电容的连接。触摸面板控制器有助于缩短触摸面板的触摸检测时间和提高触摸检测的准确性。

3. 发明授权

US09354741B2 Touch panel controller and semiconductor device 有权
标题翻译：触摸屏控制器和半导体器件
公开(公告)号：US09354741B2
公开(公告)日：2016-05-31
申请号：US14166971
申请日：2014-01-29
申请人： Synaptics Display Devices GK
发明人： Yusuke Uchida , Tatsuya Ishii , Tsuyoshi Kuroiwa , Akihito Akai , Hisayoshi Kajiwara , Kazuo Okado
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/0416 , G06F3/044
摘要： The touch panel controller activates a touch panel having a detection plane superposed on a display plane of a display device, and performs a touch detection. The touch panel controller uses a cycle of 1/n (n is a positive integer) of a display frame cycle on the display plane as the detection frame cycle of the detection plane. The touch panel controller decides an order of driving the detection-scan electrodes in each detection frame cycle according to predetermined phase-delay and phase-advance positions with respect to a display-scan electrode drive position of the display device so as to correspond to an order of the detection-scan electrode array of the touch panel. The touch panel controller makes possible to avoid the coincidence of display-scan and touch-detection positions without thinning touch detections even with the detection frame cycle of a touch sensor shorter than the display frame cycle of a liquid crystal panel.
摘要翻译：触摸面板控制器激活具有叠加在显示装置的显示平面上的检测平面的触摸面板，并进行触摸检测。触摸面板控制器使用显示平面上的显示帧周期的1 / n（n为正整数）的周期作为检测平面的检测帧周期。触摸板控制器根据相对于显示装置的显示扫描电极驱动位置的预定相位延迟和相位提前位置，在每个检测帧周期中决定驱动检测扫描电极的顺序，以对应于触摸面板的检测扫描电极阵列的顺序。即使触摸传感器的检测帧周期短于液晶面板的显示帧周期，触摸面板控制器也可以避免显示扫描和触摸检测位置的重合，而不会使触摸检测变薄。

4. 发明授权

US09250740B2 Capacitive touch panel device with differing drive pulse widths 有权
标题翻译：具有不同驱动脉冲宽度的电容式触摸屏设备
公开(公告)号：US09250740B2
公开(公告)日：2016-02-02
申请号：US14037707
申请日：2013-09-26
申请人： Synaptics Display Devices GK
发明人： Akihito Akai , Tatsuya Ishii , Kazuo Okado
IPC分类号： G06F3/044 , G06F3/041
CPC分类号： G06F3/0416 , G06F3/0418 , G06F3/044
摘要： It becomes possible to use drive pulses having different pulse widths for one kind of drive pulse signal period. Therefore, even if a voltage acting on a crossing part of drive and detection electrodes is periodically changed through a stray capacitance attributed to an external object such as a finger in an undesired manner, the pulse width of the drive pulse is never fixed with respect to the period, and the periodic buildup of a certain voltage on a detection signal, which would make appreciable noise, is suppressed. Thus, the reduction of detection signals can be suppressed in quantity without switching the pulse signal frequency of the drive pulse of a touch panel.
摘要翻译：对于一种驱动脉冲信号周期，可以使用具有不同脉冲宽度的驱动脉冲。因此，即使作用于驱动和检测电极的交叉部分的电压由于诸如手指等外部物体而引起的杂散电容周期性地变化，驱动脉冲的脉冲宽度也不会相对于周期以及对检测信号的一定电压的周期性累积将被抑制，这将产生可观的噪声。因此，可以在不切换触摸面板的驱动脉冲的脉冲信号频率的情况下抑制检测信号的减少。

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