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:
Jun. 19, 2012
Filed:
Jul. 13, 2010
Chih-chao Chen, Taoyuan, TW;
Chih-Chao Chen, Taoyuan, TW;
Ichia Technologies, Inc., Hwa-Ya Tech. Park, Gueishan, Taoyuan, TW;
Abstract
A keypad structure with a backlight source includes a base, a light guiding plate, a thin film circuit board, a resilient component, a keycap, and an elevating mechanism. The thin film circuit board includes at least one exhausting notch for increasing exhaust as the resilient component is compressed. A plurality of microstructures is formed on the light guiding plate, and the keypad structure further includes a transparent layer formed on the keycap. Light emitted from the backlight source and refracted by the plurality of microstructures passes through the keycap and the transparent layer as the backlight source lights the lateral side of the light guiding plate, so as to illuminate the transparent layer. Thus, the present invention has advantages of illuminating pattern, regional illumination, and preferable comfort.