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:
Jun. 04, 2002
Filed:
Sep. 18, 2001
Charles M. Watkins, Eagle, ID (US);
Danny Dynka, Meridian, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
Faceplates for field mission displays having novel cathodoluminescent layers are disclosed. In one embodiment a faceplate includes a transparent conductive layer, and a cathodoluminescent layer formed on the transparent conductive layer, the cathodoluminescent layer having been scrubbed by electron irradiation from an electron source with an electron current having a duty cycle in excess of ten percent, the electron current having a current density of greater than one-tenth milliampere per square centimeter while a voltage less than a thousand volts is maintained between the cathodoluminescent layer and the electron source. In one aspect, the transparent conductive layer may be formed on a transparent insulating viewing screen. In alternate aspects, the voltage maintained between the cathodoluminescent layer and the electron source may be dithered to treat the cathodoluminescent layer to varying depths. Significantly, the scrubbed faceplate has significantly enhanced performance and increased useful life compared to faceplates that have not been scrubbed.