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:
Aug. 24, 1993
Filed:
Jun. 07, 1991
David J Lawrence, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An integrated semiconductor device includes a pair of spaced apart regions of semiconductor material on a surface of a substrate of semiconductor material. One of the regions is a light emitting device and the other region is a light detector device. Each of the regions is formed of a first layer on the substrate surface of a composition suitable for serving as a light detector active layer. Additional layers are on the first layer with at least one of the additional layers being of a composition to act as a light emitter active layer. A contact layer may be provided on the additional layers. The light detector region has a highly conductive region extending through the additional layers and slightly into the light detector active layer. The light emitter region may have a highly conductive region extending through some of the additional layers to the light emitting active layer. Thus, both the light emitting region and the light detecting region are formed from the same layers of semiconductor material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile