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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 9070831 B1

PDFFull Text
Date of Patent:
Jun. 30, 2015

Filed:

Sep. 28, 2012

Light-emitting device each having variable distances between pairs of electrode pads with respect to zener diodes and lighting apparatus using the same

Applicant:

Panasonic Corporation, Osaka, JP;

Inventors:

Kenji Sugiura, Osaka, JP;

Toshikatsu Kotaki, Osaka, JP;

Kenji Ueda, Nara, JP;

Yasufumi Wada, Osaka, JP;

Assignee:

PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Michael Jung

Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 29/18 (2006.01); H01L 33/36 (2010.01); F21S 2/00 (2006.01); G02F 1/1335 (2006.01); H01L 25/075 (2006.01); H01L 27/15 (2006.01); H01L 33/50 (2010.01); H01L 33/56 (2010.01); B60Q 1/26 (2006.01); F21V 9/00 (2006.01); F21V 1/00 (2006.01); F21S 4/00 (2006.01); F21V 21/00 (2006.01); F21V 29/00 (2006.01); H01L 25/16 (2006.01);
U.S. Cl.
CPC ...
H01L 33/36 (2013.01); F21S 2/00 (2013.01); G02F 1/1335 (2013.01); H01L 25/0753 (2013.01); H01L 25/167 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48137 (2013.01); H01L 2224/48227 (2013.01); H01L 27/153 (2013.01); H01L 33/502 (2013.01); H01L 33/56 (2013.01);
Abstract

A light-emitting device including: a substrate; LEDs arranged on the substrate in a row; electrode pad pairs each including electrode pads at opposite sides of a corresponding LED in a row direction; Zener diodes (protective elements) in one-to-one correspondence to circuits (groups) Uto Ueach including nine consecutive LEDs, each protective element being located between adjacent electrode pads; and a sealing member sealing the LEDs, the electrode pad pairs, and the Zener diodes, wherein, in each circuit, a distance between electrode pads included in an electrode pad pair corresponding to an LED located closest to the Zener diode is the shortest, and a distance between electrode pads varies between two electrode pad pairs other than the electrode pad pair corresponding to the closest LED.

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