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:
Oct. 22, 1996
Filed:
Oct. 18, 1993
Yasutaka Nakashiba, Tokyo, JP;
Satoshi Uchiya, Tokyo, JP;
Other;
Abstract
A solid state image sensor device includes: a photoelectric conversion section having a first conductivity type semiconductor thin region and a second conductivity type semiconductor region in a surface area of a first conductivity type semiconductor layer; a signal electron transfer section formed within the surface area of the first conductivity type semiconductor layer, for transferring a signal electron generated at the photoelectric conversion section; and a signal electron read-out section formed over the surface area of the first conductivity type semiconductor layer, for reading-out the signal electron from the photoelectric conversion section to the signal electron transfer section. The first conductivity type semiconductor thin region is self-aligned with respect to the second conductivity type semiconductor region and this is achieved by using the same mask and controlling the angles of incidence in the ion implantation. It is possible to prevent occurrence of a potential well or a potential barrier which may otherwise occur under the electrode in case any misalignment develops during the photolithography process or any dimension deviation in the electrodes develops during the fabrication and it is possible to enhance the efficiency in which the signal electron is read-out from the photoelectric conversion section.