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1. 发明授权

US09104286B2 Control circuit and control method for touch panel to determine coordinates touched by user 有权
标题翻译：触摸屏的控制电路和控制方法，以确定用户触摸的坐标
公开(公告)号：US09104286B2
公开(公告)日：2015-08-11
申请号：US14479586
申请日：2014-09-08
申请人： ROHM CO., LTD.
发明人： Naoki Tada , Shinichi Abe , Koichi Saito , Kazunori Hisa
IPC分类号： G06F3/041 , G06F3/045
CPC分类号： G06F3/045 , G06F3/0416 , G06F2203/04104
摘要： A first resistive film is arranged such that one edge thereof is connected to a first terminal, and an edge that is opposite to the aforementioned edge is connected to a second terminal. A second resistive film is arranged with a gap between it and the first resistive film such that one edge thereof is connected to a third terminal. A voltage generating unit applies a predetermined first bias voltage and a predetermined second bias voltage to the first terminal and the second terminal, respectively. A voltage detection unit detects a panel voltage that occurs at the third terminal. A current detection unit detects a panel current that flows through a path including the first terminal, the first resistive film, and the second terminal. A computation unit determines the coordinates touched by the user, based upon the values of the panel voltage and the panel current.
摘要翻译：第一电阻膜被布置成使得其一个边缘连接到第一端子，并且与上述边缘相对的边缘连接到第二端子。第二电阻膜在其与第一电阻膜之间布置有间隙，使得其一个边缘连接到第三端子。电压产生单元分别向第一端子和第二端子施加预定的第一偏置电压和预定的第二偏置电压。电压检测单元检测在第三端子处发生的面板电压。电流检测单元检测流过包括第一端子，第一电阻膜和第二端子的路径的面板电流。计算单元基于面板电压和面板电流的值来确定用户触摸的坐标。

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