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    • 1. 发明授权
    • Readout circuit for touch sensor
    • 触摸传感器读出电路
    • US08692180B2
    • 2014-04-08
    • US13226619
    • 2011-09-07
    • Seung-Seok OhMin-Ho Sohn
    • Seung-Seok OhMin-Ho Sohn
    • H01J40/14H03F3/08H01J43/00H03F1/00H03F3/45
    • G06F3/0416G06F3/0412G06F3/0418
    • The present invention relates to a readout circuit for a touch sensor which can increase touch sensing sensitivity regardless of a process variation and a driving voltage of the touch sensor.The readout circuit includes a comparative circuit for setting an input range of a readout signal from the readout line as well as scaling the readout signal to be a required driving range and forwarding the readout signal scaled thus as a touch sensing signal, and an analog to digital converter for converting the touch sensing signal from the comparative circuit as a digital sensing signal and forwarding the digital sensing signal.
    • 本发明涉及一种用于触摸传感器的读出电路,其可以随着触摸传感器的工艺变化和驱动电压而增加触摸感测灵敏度。 读出电路包括用于设置来自读出线的读出信号的输入范围以及将读出信号缩放为所需驱动范围的比较电路,并且将作为触摸感测信号缩放的读出信号转发到模拟信号 数字转换器,用于将来自比较电路的触摸感测信号作为数字感测信号转换并转发数字感测信号。