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:
Nov. 09, 2010
Filed:
Jun. 05, 2006
Salvatore Coffa, Catania, IT;
Maria Castagna, Enna, IT;
Anna Muscara', Messina, IT;
Mariantonietta Monaco, Campobasso, IT;
Salvatore Coffa, Catania, IT;
Maria Castagna, Enna, IT;
Anna Muscara', Messina, IT;
Mariantonietta Monaco, Campobasso, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
A device for emitting optical radiation is integrated on a substrate of semiconductor material. The device includes an active layer having a main area for generating radiation, and first and second electro-conductive layers having an electric signal that generates an electric field to which an exciting current is associated. In the device, a dielectric region is formed between the first and second layers to space peripheral portions of the first and second layers so that the electric field in the main area is higher than the electric field between the peripheral portions, thereby facilitating generation of the exciting current in the main area. A method of manufacturing is also disclosed.