Light guide member and keypad assembly using the same

Details Light guide member and keypad assembly using the same Light guide member and keypad assembly using the same

2011-03-02

2011-11-08

Sember, Thomas (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S610000, C362S623000, C200S314000

Reexamination Certificate

active

08052318

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

REFERENCES:
patent: 5746493 (1998-05-01), Jonsson et al.
patent: 6026283 (2000-02-01), Stephenson
patent: 2007/0012553 (2007-01-01), Lee et al.
patent: 1217079 (1999-05-01), None
patent: 1769933 (2006-05-01), None
patent: 1866439 (2006-11-01), None
patent: 09-281341 (1997-10-01), None
patent: 2001-255416 (2001-09-01), None
patent: 2003-177250 (2003-06-01), None
patent: 2004-319364 (2004-11-01), None
patent: 2002-60550 (2002-07-01), None
patent: 2006-117699 (2006-11-01), None
patent: WO 2007/024213 (2007-03-01), None

Affiliated with

Also associated with

Rating

Light guide member and keypad assembly using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light guide member and keypad assembly using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light guide member and keypad assembly using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4301211