Invention Grant
US09035900B2 Touch detector and method of driving the same, display with touch detection function, and electronic unit having plural different drive electrodes
有权
触摸检测器及其驱动方法，具有触摸检测功能的显示器以及具有多个不同驱动电极的电子单元
- Patent Title: Touch detector and method of driving the same, display with touch detection function, and electronic unit having plural different drive electrodes
- Patent Title (中): 触摸检测器及其驱动方法，具有触摸检测功能的显示器以及具有多个不同驱动电极的电子单元
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Application No.: US13137340Application Date: 2011-08-08
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Publication No.: US09035900B2Publication Date: 2015-05-19
- Inventor: Kohei Azumi , Yoshitoshi Kida , Koji Noguchi , Koji Ishizaki
- Applicant: Kohei Azumi , Yoshitoshi Kida , Koji Noguchi , Koji Ishizaki
- Applicant Address: JP Tokyo
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Tokyo
- Agency: Fishman Stewart Yamaguchi PLLC
- Priority: JP2010-214188 20100924
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/044
Abstract:
A touch detector capable of achieving high position resolution while improving detection sensitivity to a touch is provided. The touch detector includes: a plurality of drive electrodes arranged side by side to extend in one direction; a detection electrode extending in a direction orthogonal to a direction where the drive electrodes extend, and arranged to form a capacitance at each of intersections with the drive electrodes; and a scanning drive section sequentially selecting a predetermined plural number of target electrodes from the plurality of drive electrodes in a time-divisional manner, and applying a touch detection drive signal with a plurality of pulse waveforms for detecting an external adjacent object to the selected target electrodes to perform a scanning drive. A scanning pitch in the scanning drive is smaller than the total width of the plural number of selected target electrodes.
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