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:
Feb. 04, 2014
Filed:
Jun. 30, 2009
Hawaii W Y Xuan, Taipei, TW;
Robert D. Parsons, Research Triangle Park, NC (US);
Edward Y S Lee, Taipei, TW;
Albert Lin, Lugu, TW;
Hawaii W Y Xuan, Taipei, TW;
Robert D. Parsons, Research Triangle Park, NC (US);
Edward Y S Lee, Taipei, TW;
Albert Lin, Lugu, TW;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An optical touch panel and corresponding method are disclosed. The optical touch panel may comprise a rectangular position-detecting surface; a frame-shaped circuit board surrounding the rectangular position-detecting surface; a plurality of light-emitting elements configured for emitting a plurality of light beams, wherein the light-emitting elements are arranged along a first side of the rectangular position-detecting surface and disposed on the frame-shaped circuit board; a plurality of light-receiving elements configured for receiving light beams emitted by the plurality of light-emitting elements; a plurality of SMT components configured as optical gates for isolating ambient light to prevent erroneous light detection; and a control circuit. The plurality of SMT components and the plurality of light-receiving elements may be alternately arranged along a second side of the rectangular position-detecting surface opposite to the first side and disposed on the frame-shaped circuit board. The plurality of light-receiving elements may be arranged behind the plurality of SMT components.