The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Apr. 26, 2010
Kari Rönkä, Oulu, FI;
Antti Keränen, Oulu, FI;
Janne Aikio, Oulu, FI;
Teknologian Tutkimuskeskus VTT, VTT, FI;
Abstract
Arrangement () for a user input device, such as a touchscreen or a touchpad, comprising a substrate (), such as an optically substantially transparent flex film or a multilayer film, said substrate comprising support electronics () for providing power, control and/or communications connection to further electronic components (), a number of emitters and detectors () arranged to said substrate into contact with the support electronics, for emitting and detecting light, respectively, and a lightguide () provided, such as laminated, onto the substrate such that said emitters and detectors are optically coupled to the lightguide material, the properties of the lightguide including the refractive index of the lightguide material being selected and the emitters and detectors being configured so as to enable, when in use, total internal reflection (TIR) -type propagation of light within the lightguide between the emitters and detectors, and recognition of a touch on the basis of a drop in the TIR performance as determined from the detected light. A related method of manufacture is presented.