Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-08-11
2011-11-15
Phan, Thiem (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S846000, C029S874000, C029S876000, C029S881000, C362S026000, C362S030000, C362S616000
Reexamination Certificate
active
08056216
ABSTRACT:
A method of manufacturing non-backlighted illuminating keypad includes preparing a transparent plastic thin plate; forming a plurality of keycaps on a surface the plastic thin plate; forming a light gathering layer on another surface of the plastic thin plate opposite to the keycaps; attaching the plastic thin plate onto an electronic ink layer; and attaching an first elastic layer on the electronic ink layer.
REFERENCES:
patent: 3660919 (1972-05-01), Nagel
patent: 7064288 (2006-06-01), Nam
patent: 7182907 (2007-02-01), Shimizu et al.
patent: 2008/0037765 (2008-02-01), Finney et al.
patent: 2008/0179173 (2008-07-01), Jung et al.
patent: M322027 (2007-11-01), None
Chang Yu-Chih
Liu Chang-Li
HDLS IPR Services
Ichia Technologies, Inc.
Phan Thiem
Shih Chun-Ming
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