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:
Jul. 20, 2010
Filed:
May. 27, 2004
Takehiro Fujii, Kyoto, JP;
Takehiro Fujii, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An object of the present invention is to manufacture a white light-emitting diode element by coating a blue light-emitting diode chip with a coating of a synthetic resin containing a fluorescent material. The object is achieved by bonding an LED material plate corresponding to a plurality of LED chips to an expansion sheet, dividing the LED material plate into individual LED chips, stretching the expansion sheet to widen the spacing between the LED chips, forming a synthetic resin layer between the chips, and dicing the synthetic resin layer to remove portions of the synthetic resin layer between the LED chips while leaving part of the synthetic resin layer on a side surface of each of the LED chips.