Patent ID: 6833679
Filing Date: 2004-12-21
Classification: B82Y,H01J,H04N

Abstract:
A method for forming an image on a phosphor screen of a cathode ray tube, comprising:providing an electron gun assembly having an electron source disposed at a source end and electrodes for forming an image of the electron source on the phosphor screen; providing a multi-element field effect cathode to serve as the electron source, the multi-element field effect cathode comprising a common carrier assembly and a plurality of field emission arrays and electrical bond pads for controlling emission current from each array; providing a deflection apparatus to cause an electron beam from each array to traverse the phosphor screen in a horizontal and a vertical direction providing a clock signal having a selected number of succession of increments; providing a phosphor screen wherein the phosphor screen is comprised of a plurality of stripes of phosphor and a plurality of stripes of mask material disposed between the plurality of stripes of phosphor; and applying selected voltages to the deflection apparatus and to the electrical bond pads in response to the clock signal to cause a selected emission current from a selected array as the electron beam from the array traverses the phosphor screen.