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. 18, 1994
Filed:
Aug. 27, 1993
Uya Shinji, Kyungki, KR;
Goldstar Electron Co., Ltd., , KR;
Abstract
A charge detecting device in which a buried type charge sensing channel and a surface type floating surface channel crossing with the charge sensing channel in three-dimensional, the floating surface channel having a surface potential varying depending on a charge amount of the charge sensing channel, the device being characterized by a surface channel region disposed on the charge sensing channel, surface channel the region having a conductivity opposite to that of the charge sensing channel. A surface-invertible buried channel isolation region is disposed between the charge sensing channel and each of a source and a drain both formed on either side of the floating surface channel. Carriers of the floating surface channel and the charge sensing channel correspond to electrons of the same polarity. With this structure, there is no problem of dark current. Also, a short noise caused by dark noise is reduced, thereby enabling a high sensitivity to be obtained.