Patent ID: 6225738
Filing Date: 2001-05-01
Classification: H01J

Abstract:
A field emission device, comprising:a front surface substrate and a rear surface substrate disposed in a vacuum opposedly spaced apart from each other by a predetermined distance;cathodes formed in strips on the rear surface substrate;a plurality of microtips formed on the cathodes in an array pattern and electrically connected to the cathodes;a first insulating layer formed on the cathodes having throughholes to the cathodes for holding the plurality of the microtips;gates formed in strips on the first insulating layer in a direction crossing the cathodes maintaining the throughholes of the first insulating layer;anodes arranged into three groups formed in strips on the surface of the front surface substrate;contact wiring connecting the anodes within each group;external terminals corresponding to the groups of cathodes formed on the rear surface substrate;contact lines formed from a mixture of In and Sn in a ratio of 50:50 connecting the external terminals on the front surface to corresponding external terminals on the rear surface; andred, green, blue fluorescent films with a different color being coated on each group of anodes,wherein respective pixel cells are formed by sequentially forming a red, green, and blue fluorescent films on the abodes, each of which is comprised of three anodes, and a second insulating layer is included in an area in which the anodes cross each other, so that the contact wiring of one group does not contact that of another group.