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:
Dec. 03, 2019
Filed:
Nov. 09, 2015
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Koichi Sugiyama, Sakai, JP;
Nobuyuki Yoshioka, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
Provided is an optical sensing member, comprising a light guide platewhich propagates light from a light source unit, detecting unitswhich detect scattered light from the light guide platebeing touched, an optical member which guides the scattered light to the detecting units, and a primary control unitwhich computes the touch location upon the light guide plateon the basis of information relating to the detected light. The optical member has arc-shaped curved surfaces formed on the end parts which face each of the detecting units. Each of the detecting units outputs, as the information relating to the light which is detected by the detecting units, location information corresponding to the angle of entry to the detecting units of the light which is radiated from the facing arc-shaped curved surfaces. It is thus possible to clarify contours of the light which is detected by the detecting units, and to improve the precision of the detection of the touch location.