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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 9091415 B1

PDFFull Text
Date of Patent:
Jul. 28, 2015

Filed:

Sep. 11, 2012

Light-emitting device, and display apparatus, which can efficiently emit, to outside, fluorescence generated in fluorescent layer and can realize high-luminance light emission and in which generation of blurriness and fuzziness of display is suppressed

Applicants:

Hisanori Bessho, Osaka, JP;

Mitsuhiro Koden, Osaka, JP;

Akiko Iwata, Osaka, JP;

Yoshimasa Fujita, Osaka, JP;

Yuhki Kobayashi, Osaka, JP;

Inventors:

Hisanori Bessho, Osaka, JP;

Mitsuhiro Koden, Osaka, JP;

Akiko Iwata, Osaka, JP;

Yoshimasa Fujita, Osaka, JP;

Yuhki Kobayashi, Osaka, JP;

Assignee:

Sharp Kabushiki Kaisha, Osaka, JP;

Attorney:

Morrison & Foerster LLP

Primary Examiner:

Joseph L Williams

Int. Cl.
CPC ...
H05B 33/02 (2006.01); H01L 33/48 (2010.01); F21V 9/10 (2006.01); H01L 51/52 (2006.01); H01L 27/32 (2006.01); F21V 13/02 (2006.01); F21V 13/14 (2006.01); H01L 33/50 (2010.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
F21V 9/10 (2013.01); F21V 13/02 (2013.01); F21V 13/14 (2013.01); H01L 27/322 (2013.01); H01L 33/507 (2013.01); H01L 51/5262 (2013.01); H01L 51/5268 (2013.01); H01L 51/5271 (2013.01); G02F 1/133617 (2013.01);
Abstract

A light-emitting device includes an excitation light source that emits excitation light; a first substrate which is disposed so as to face the excitation light source and on which a fluorescent layer and a first low-refractive-index layer are formed, the fluorescent layer being excited by the excitation light to emit fluorescence; and a barrier that surrounds side surfaces of the fluorescent layer, the side surfaces extending in a stacking direction of the excitation light source and the first substrate. At least a portion of the barrier that faces the fluorescent layer has a light-scattering property. The first low-refractive-index layer is located between the fluorescent layer and the first substrate. The first low-refractive-index layer has a refractive index lower than that of the first substrate.

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