Invention Grant
- Patent Title: Capacitive touch screen
- Patent Title (中): 电容式触摸屏
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Application No.: US12888152Application Date: 2010-09-22
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Publication No.: US08169416B2Publication Date: 2012-05-01
- Inventor: Sang-Youl Han
- Applicant: Sang-Youl Han
- Applicant Address: KR Seoul
- Assignee: Hi-Dis Touchscreen Co., Ltd.
- Current Assignee: Hi-Dis Touchscreen Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Lowe Hauptman Ham & Berner LLP
- Priority: KR10-2008-0030902 20080402
- Main IPC: G06F3/041
- IPC: G06F3/041

Abstract:
The present invention provides a capacitive touch screen (1) which includes a substrate (10), a first electrode plate (20), an elastic spacer (30), a second electrode plate (40) and a transparent panel (50). The substrate (10) is made of a plate having a rim (11). The first electrode plate (20) is placed on the rim (11) of the substrate (10). The elastic spacer (30) is interposed between the first electrode plate (20) and second electrode plate (40). One of the first and second electrode plates comprises four or more electrode plates arranged along the rim (11) of the substrate (10). When a pressure is applied to the transparent panel (50), a distance (d) between the first and second electrode plate changes. Thereby, capacitances are varied at sensing points (S) corresponding to locations of the four or more electrode plates, and a touch location and a touch pressure are determined by variation rates of the measured capacitances.
Public/Granted literature
- US20110025631A1 CAPACITIVE TOUCH SCREEN Public/Granted day:2011-02-03
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