Invention Grant
- Patent Title: Key sheet
- Patent Title (中): 钥匙表
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Application No.: US12365301Application Date: 2009-02-04
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Publication No.: US08013262B2Publication Date: 2011-09-06
- Inventor: Yoshifumi Honmatsu , Yasunori Takeda , Yutaka Nakanishi
- Applicant: Yoshifumi Honmatsu , Yasunori Takeda , Yutaka Nakanishi
- Applicant Address: JP Tokyo
- Assignee: Polymatech Co., Ltd.
- Current Assignee: Polymatech Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cermak Nakajima LLP
- Agent Tomoko Nakajima
- Priority: JP2008-028392 20080208
- Main IPC: H01H13/70
- IPC: H01H13/70 ; H01H9/00

Abstract:
Provided is a key sheet allowing reliable sliding operation input through accurate coordinate position detection and depressing operation input of satisfactory depression operability through clear click feel. Fixation layers are formed at positions under depressing operation portions, and there are no fixation layers in portions around the depressing operation portions but gaps are formed. With this construction, it is possible to suppress a depression operation load to a low level at a time of depressing input operation, and, when contact switches with click feel are depressed, the click feel can be easily transmitted. Further, a surface sheet has movable contact portions which enter the gaps at a time of sliding input operation and which are displaced so as to be capable of coming into contact with a sensor sheet. With this construction, it is possible to sense, in a stable manner, capacitance at an in-plane position of a sliding operation surface of the sensor sheet.
Public/Granted literature
- US20090200148A1 KEY SHEET Public/Granted day:2009-08-13
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