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:
Oct. 16, 1990
Filed:
Apr. 27, 1988
Applicant:
Inventors:
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
437130 ; 437122 ; 437129 ; 437133 ; 437905 ; 148D / ; 148D / ;
Abstract
In the manufacture of laser diodes having a stripe-shaped, active layer, a problem arises upon application of lateral layers, particularly of blocking pn-junctions for lateral current conduction, in that these layers are undesired above the active layer. By applying a protective cover layer that will dissolve in super-cooled melts of the material of the lateral layers, before the growth of the lateral layers, the growth of the lateral layers, particularly blocking pn-junctions, above the active stripe is avoided since the cover layer dissolves in the melt given epitaxial application of the lateral layers.