08624853 is referenced by 2 patents and cites 71 patents.

A touch-screen device includes a radiation source, a pliable waveguide configured to receive radiation emitted by the radiation source and to cause some of the received radiation to undergo total internal reflection within the pliable waveguide, a frustrating layer disposed relative to the pliable waveguide so as to enable the frustrating layer to contact the pliable waveguide when the pliable waveguide is physically deformed, the frustrating layer being configured to cause frustration of the total internal reflection of the received radiation within the pliable waveguide at a contact point between the frustrating layer and the pliable waveguide when the pliable waveguide is physically deformed to contact the frustrating layer such that some of the received radiation undergoing total internal reflection within the pliable waveguide escapes from the pliable waveguide at the contact point, and an imaging sensor configured to detect some of the radiation that escapes from the optical waveguide.

Title
Structure-augmented touch sensing with frustated total internal reflection
Application Number
12/757693
Publication Number
8624853 (B2)
Application Date
April 9, 2010
Publication Date
January 7, 2014
Inventor
David Elliott Slobodin
Lake Oswego
OR, US
Joel S Kollin
Seattle
WA, US
Jefferson Y Han
Holliswood
NY, US
Agent
Alleman Hall McCoy Russell & Tuttle
Assignee
Perceptive Pixel
NY, US
IPC
G06F 3/041
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