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. 30, 1993
Filed:
May. 18, 1992
Paul Y Lin, Taipei, TW;
Other;
Abstract
A light emitting diode includes a base with a recess and a housing mounted above the base. A conductive plate is mounted in the recess with a red chip, a green chip, and two blue chips disposed thereon, all of which being enclosed by the housing. A first pin has a first contact electrically connected to the red chip and a second contact extending downward and out of the base. A second pin has a first contact electrically connected to the green chip and a second contact extending downward and out of the base. A third pin has a first contact electrically connected to the blue chips and a second contact extending downward and out of the base. A common cathode pin has a first contact electrically connected to the conductive plate and a second contact extending downward and out of the base. Different intensities of light of the three primary colors emitted by the chips result in any desired colored light. A bottom surface and a peripheral wall of the recess are covered by a scattering agent, providing a complete mixing of light emitted by the chips.