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:
Feb. 27, 2001
Filed:
Mar. 13, 1998
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A laser diode for digital versatile disks or other purposes and its fabricating method are disclosed. The fabrication does not require any regrowth steps during the MOCVD process or the formation of nitride or oxide to serve as dielectrics, thus significantly simplifying the fabrication process. Further, the laser diode can operate with a relatively low threshold current due to its excellent current confinement. The laser diode for digital versatile disk is made of AlGaInP alloy, in which a layer of Al,Ga,As, where x>0.8, is formed between the AlGaInP cladding layers. The layer of Al,Ga,As is then oxidized in a hot vapor atmosphere to form AlO,that has at least one opening formed thereon. The AlO,layer serves as a current confinement layer and can provide excellent current confinement. The AlO,layer can also serve as a dielectric layer in the ridge structure.