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. 19, 1991
Filed:
Aug. 28, 1989
Yoshihiro Hisa, Itami, JP;
Abstract
An infrared light detecting element which may be employed in a two-dimensional light detecting array includes a light responsive photodiode that generates electrical charges in response to incident light. The electrical charges are conveyed to a charge storage means and subsequently transferred to a charge coupled device. The charges are stored in potential wells produced opposite electrodes in a laminated structure including a semiconductor substrate on which one charge storage electrode is disposed and a first semiconductor layer disposed on the substrate on which a second charge storage electrode is disposed. The charge storage electrodes are interconnected in series or in parallel. Additional semiconductor layers and charge storage electrodes may be employed. The laminated structure produces a significant increase in the charge storage capacity of the device without increasing its area. The dynamic range of the charge storage capacity and signal-to-noise ratio of the element and the array are significantly improved over the prior art.