发明申请
- 专利标题: SYSTEM AND METHOD OF INTEGRATING A TOUCHSCREEN WITHIN AN LCD
- 专利标题(中): 在LCD中集成触摸屏的系统和方法
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申请号: US11871264申请日: 2007-10-12
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公开(公告)号: US20080030479A1公开(公告)日: 2008-02-07
- 发明人: Robert Lowles , James Robinson , Ken Wu
- 申请人: Robert Lowles , James Robinson , Ken Wu
- 申请人地址: CA Waterloo N2L 3W8
- 专利权人: RESEARCH IN MOTION LIMITED
- 当前专利权人: RESEARCH IN MOTION LIMITED
- 当前专利权人地址: CA Waterloo N2L 3W8
- 主分类号: G09G5/00
- IPC分类号: G09G5/00
摘要:
A touchscreen liquid crystal display, method for using a liquid crystal display as a user input, and a mobile electronic device are provided. The touchscreen liquid crystal display comprises: a liquid crystal display having a viewing surface and including a plurality of parallel first electrodes located on one side of a liquid crystal containing area and overlapping with a plurality of parallel second electrodes located on an opposite side of the liquid crystal containing area, the first and second electrodes overlapping to form an array of liquid crystal pixel elements, at least some of the first electrodes being displaceable towards the second electrodes in response to external pressure applied to the viewing surface; a driver circuit coupled to the first and second electrodes for driving the electrodes for selectively controlling a display state of the display pixel elements; and a measurement circuit coupled to the electrodes for measuring display pixel element voltages for at least some of the display pixel elements formed by the first electrode, and for each display pixel element for which a display pixel element voltage is measured, comparing the measured voltages to reference voltages and determining a relative force of the external pressure on the viewing surface based on the measured voltages.
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