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. 09, 2002
Filed:
Sep. 19, 2001
Charles M. Watkins, Eagle, ID (US);
Danny Dynka, Meridian, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
Field emission displays having novel cathodoluminescent layers are disclosed. In one embodiment, the cathodoluminescent layers are exposed to electron irradiation with an electron current having a duty cycle in excess of ten percent. In alternate aspects, the electron irradiation (scrubbing) may be performed in a vacuum, and an accelerating voltage may be maintained between the cathodoluminescent layer and an source of electrons. The cathodoluminescent layer may be reversibly darkened by the scrubbing. The cathodoluminescent layers may be formed on a transparent conductive layer formed on a transparent insulating viewing screen to provide a faceplate. In one aspect, the cathodoluminescent layers are irradiated with electrons having a density of greater than one hundred microamperes/cm . Significantly, this results in improved emitter life in a field emission display. The display including the scrubbed faceplate has significantly enhanced performance and increased useful life compared to displays including faceplates that have not been scrubbed.