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.

Date of Patent:
Dec. 05, 2000

Filed:

Mar. 26, 1998
Applicant:
Inventors:

Norikazu Itoh, Kyoto, JP;

Shunji Nakata, Kyoto, JP;

Yukio Shakuda, Kyoto, JP;

Masayuki Sonobe, Kyoto, JP;

Tsuyoshi Tsutsui, Kyoto, JP;

Assignee:

Rohm Co., Ltd., Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
438 33 ; 438462 ;
Abstract

Deposited on a wafer-like substrate for forming a plurality of light emitting device chips is a semiconductor layer laminate with a different property from that of the substrate. Then, electrodes are provided on and in electric connection with a top semiconductor layer of a first conductivity type of the semiconductor layer laminate, and on and in electric connection with a semiconductor layer of a second conductivity type, exposed by locally etching the semiconductor layer laminate, in association with the individual chips. Then, the semiconductor layer laminate is etched at boundary portions between the chips to expose the substrate, and the substrate is broken at the exposed portions into the chips. As the semiconductor layer laminate is etched out at the boundary portions between the chips before breaking the wafer, breaking can be facilitated without damaging the light emitting portions of the semiconductor layer laminate. This helps provide high-performance semiconductor light emitting devices.


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