发明申请
US20090235750A1 Capacitive Ultrasonic Sensors and Display Devices Using the Same
有权
电容式超声波传感器及使用其的显示装置
- 专利标题: Capacitive Ultrasonic Sensors and Display Devices Using the Same
- 专利标题(中): 电容式超声波传感器及使用其的显示装置
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申请号: US12054302申请日: 2008-03-24
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公开(公告)号: US20090235750A1公开(公告)日: 2009-09-24
- 发明人: Ming-Wei CHANG , Hsu-Cheng DENG , Tsung-Ju GWO
- 申请人: Ming-Wei CHANG , Hsu-Cheng DENG , Tsung-Ju GWO
- 申请人地址: TW Chutung
- 专利权人: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
- 当前专利权人: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
- 当前专利权人地址: TW Chutung
- 主分类号: G01B17/00
- IPC分类号: G01B17/00
摘要:
A capacitive ultrasonic device is capable of detecting an object and providing information regarding an orientation of the object. The capacitive ultrasonic device includes a power source configured to generate a voltage signal, an array of sensor elements, each of the sensor elements being configured to generate an ultrasonic wave during a first period of the voltage signal and detect whether a wave is reflected from the object during a second period of the voltage signal when the voltage signal is applied thereto, and a control unit configured to activate a first portion of the array of sensor elements through the power source, and activate a second portion of the array of sensor elements when at least one of the first portion of the sensor elements detects a wave reflected from the object.