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:
Jul. 14, 1992
Filed:
May. 16, 1991
Applicant:
Inventors:
Clinton C Kuo, Austin, TX (US);
Ko-Min Chang, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 235 ; 357 13 ; 357 55 ;
Abstract
A floating gate is utilized which has two portions. A first portion overlies the channel region formed between the source and drain. The control gate overlies this portion of the floating gate and the remaining portion of the channel region forming an enhancement transistor. The second portion of the floating gate extends from the first portion over a thin oxide tunnel area of the source. An additional diode implant forming a junction with the drain region is provided to regulate the current flow through the drain, particularly during erasure.