Touch screen with light-enhancing layer

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C250S222100, C250S227140, C385S012000, C385S013000, C345S173000, C345S175000, C345S176000

Reexamination Certificate

active

11484908

ABSTRACT:
A touch indication device comprises a light guide structure for passing light of a light source via total internal reflection. A touch surface disturbs the total internal reflection when touched, causing light to leave the light guide structure. A light enhancement layer converts the light leaving the light guide and sends the converted light to a light detector. The light enhancement layer amplifies the intensity and/or changes the color of the light leaving the light guide. The detector determines the position of the touch on the touch surface based on the light from the light enhancement layer.

REFERENCES:
patent: 4346376 (1982-08-01), Mallos
patent: 4484179 (1984-11-01), Kasday
patent: 4542375 (1985-09-01), Alles et al.
patent: 7351949 (2008-04-01), Oon et al.
patent: 2004/0108990 (2004-06-01), Lieberman et al.
patent: 2006/0027120 (2006-02-01), Smith
patent: 2006/0066586 (2006-03-01), Gally et al.
patent: 2006/0279558 (2006-12-01), Van Delden et al.
patent: 2006/0290684 (2006-12-01), Giraldo et al.
patent: 2007/0084989 (2007-04-01), Lange et al.
patent: 2007/0125937 (2007-06-01), Eliasson et al.
patent: WO 2005/029394 (2005-03-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Touch screen with light-enhancing layer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Touch screen with light-enhancing layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Touch screen with light-enhancing layer will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3931133

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.