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1. 发明授权

US09360957B2 Semiconductor device 有权
标题翻译：半导体器件
公开(公告)号：US09360957B2
公开(公告)日：2016-06-07
申请号：US14167043
申请日：2014-01-29
申请人： Synaptics Display Devices GK
发明人： Kazuhiro Okamura , Shigeru Ota
IPC分类号： G06F3/041
CPC分类号： G06F3/0412 , G06F3/0416
摘要： A semiconductor device including a display driving circuit that drives a display panel, a touch detection signal driving circuit that applies a touch detection signal to a touch sensor, and a touch state detection circuit that receives a signal obtained by observing the touch sensor is configured as follows. A connection switching circuit that switches connection between a terminal and an internal circuit is included therein. The connection switching circuit switches connection with the terminal by selecting one of at least two of the display driving circuit, the touch detection signal driving circuit and the touch state detection circuit. A protection circuit which is capable of changing a protection voltage level is connected to the terminal, and the protection voltage level varies depending on the signal amplitude of the circuit selected by the connection switching circuit.
摘要翻译：一种包括驱动显示面板的显示驱动电路，向触摸传感器施加触摸检测信号的触摸检测信号驱动电路和接收通过观察触摸传感器获得的信号的触摸状态检测电路的半导体器件被配置为如下。其中包括切换端子与内部电路之间的连接的连接切换电路。连接切换电路通过选择显示驱动电路，触摸检测信号驱动电路和触摸状态检测电路中的至少两个来切换与端子的连接。能够改变保护电压电平的保护电路连接到端子，并且保护电压电平根据由连接切换电路选择的电路的信号幅度而变化。

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