logo

For the Inventor, By the Inventor

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.:

US 10158053 B1

PDFFull Text
Expired
Date of Patent:
Dec. 18, 2018

Filed:

Feb. 16, 2017

Light emitting device that emits secondary light with a fast response

Applicant:

Sharp Kabushiki Kaisha, Sakai, Osaka, JP;

Inventors:

Atsushi Yamashita, Sakai, JP;

Masatsugu Masuda, Sakai, JP;

Toyonori Uemura, Sakai, JP;

Masanobu Okano, Sakai, JP;

Masayuki Ohta, Sakai, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Daniel Whalen

Int. Cl.
CPC ...
H01L 33/50 (2010.01); H05B 37/02 (2006.01); H01L 25/075 (2006.01); H01L 33/56 (2010.01); F21V 8/00 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); G02B 6/0091 (2013.01); H01L 25/0753 (2013.01); H01L 33/56 (2013.01); H05B 33/086 (2013.01); H05B 33/0845 (2013.01); H05B 37/02 (2013.01); H01L 2933/005 (2013.01); H01L 2933/0033 (2013.01); H01L 2933/0041 (2013.01);
Abstract

A light emitting device which emits a secondary light with high color purity and has a fast response speed is obtained. A KSF phosphor () which absorbs a part of blue light and emits red light and a CASN phosphor () are distributed in a resin () which seals an LED chip () which emits the blue light. The KSF phosphor () absorbs the blue light and emits the red light by forbidden transition, and the CASN phosphor () absorbs the blue light and emits the red light by allowed transition.

Find Patent Forward Citations

Yamashita, Atsushi. (2018). Light emitting device that emits secondary light with a fast response (U.S. Patent No. 10158053). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10158053

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…