Waveguide member and keypad assembly using the same

Details Waveguide member and keypad assembly using the same Waveguide member and keypad assembly using the same

2011-06-14

2011-06-14

Sember, Thomas M (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S610000, C362S623000, C362S629000, C200S314000

Reexamination Certificate

active

07959342

ABSTRACT:
Disclosed are a waveguide member and a keypad assembly including the same. The waveguide member includes a waveguide for guiding light propagated inside, and at least one recess formed in a direction perpendicular to a direction of guidance of light coupled to the inside of the waveguide so that light guided by the waveguide is reflected to the waveguide. The keypad assembly includes a keypad having at least one key button and an elastic sheet fixing the key button, a waveguide member positioned beneath the keypad, the waveguide member having a waveguide for guiding light coupled to an inside and at least one recess for reflecting light guided by the waveguide to the waveguide, and a switch pad positioned beneath the waveguide member so as to establish an electric contact when the key button is pressed.

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