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:
Dec. 21, 1993
Filed:
May. 20, 1992
Applicant:
Inventors:
Fereydoon Namavar, Ashford, CT (US);
Nader M Kalkhoran, Malden, MA (US);
H Paul Maruska, Acton, MA (US);
Assignee:
Spire Corporation, Bedford, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257-3 ; 257 55 ; 257 59 ; 257103 ; 257 94 ;
Abstract
A solid state optoelectronic switching and display device and a method for its manufacture are disclosed. The device, formed in silicon, essentially is a surface-emitting visible light-emitting diode that allows rapid and efficient switching and information transfer, via optical means, between IC's, PC boards and displays in a computer. The method essentially includes electrochemically etching a silicon wafer to form a porous silicon region therein, depositing a transparent semiconductor layer on the porous silicon region, and forming a back contact on the wafer.