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. 27, 1999
Filed:
Dec. 18, 1997
Mark I Gardner, Cedar Creek, TX (US);
Thomas E Spikes, Jr, Round Rock, TX (US);
Robert Paiz, Austin, TX (US);
Other;
Abstract
A method and structure are provided for an IGFET which has a highly scalable short conduction channel length. The short channel IGFET functions more rapidly than do longer conduction channel devices. Lightly doped regions provide a graded extension or buffer region to the conduction channel. Thus, the voltage drop is shared by the source/drain and channel, in contrast to an abrupt n+/p junction where the almost the entire voltage drop occurs across the lightly doped (channel) side of the junction. This method and structure preserves the integrity of the IGFET by protecting the gate from 'hot electron injection.' The method and structure provide an IGFET with increased performance without compromising the IGFET's reliability or longevity.