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:
Apr. 15, 1997
Filed:
Apr. 14, 1995
Kang H Sung, Seoul, KR;
Chang W Huh, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A field emission display, and method of making, including: a first substrate; a transparent electrode formed on the first substrate; a fluorescent layer of emitting light formed on a predetermined area of the transparent electrode; an insulating layer formed around the fluorescent layer on the other areas of the transparent electrode; a gate electrode formed on the insulating layer; a second substrate; a conductive cathode layer formed on the second substrate; and a tip for emitting electrons formed on the conductive cathode layer, the tip being aligned with the fluorescent layer in such a way that they may stand opposed to each other at a distance under a vacuum condition. The electrons are emitted from the tip of the fluorescent layer under control of the gate electrode. The tip is formed by taper-etching the tip layer in a RIE process. Subsequent evaporation of the tip to sharpen it is not necessary. This simplifies, and cuts the cost of, fabrication of the FED.