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:
Nov. 25, 2008
Filed:
Nov. 17, 2006
Ko-ju Chen, Taoyuan, TW;
Ko-Ju Chen, Taoyuan, TW;
Ichia Technologies, Inc., Taoyuan, TW;
Abstract
A light guide structure installed in a keypad includes a light guide plate and a plurality of light emitting components. The light guide plate has a plurality of light guiding areas, each having a center light guiding circle with a plurality of light guide rings extended outward. The light guiding area and the adjacent light guiding area form light guide rings connected with an intersection, and the center light guiding circle and the light guide rings have a plurality of arc light guiding particles. The light emitting component is installed under the light guide plate and at the corresponding center position of the center light guiding circle. If the light emitting component is lit, light is projected onto the light guide plate and refracted by the light guiding particles to produce a light transmission effect for showing a number or a figure on the surface of the push button.