AUTOEMISSION CATHODE AND ELECTRON DEVICE BUILT ON ITS BASE ( VARIANTS ) Russian patent published in 2002 - IPC

FIELD: instrumentation engineering. SUBSTANCE: invention can be employed for manufacture of matrix autoemission cathodes and electron devices on their bases. Matrix autoemission cathode includes collection of points 1. Each point is formed by electrolytic metallization of through pores passing through thickness of dielectric plate 3 made of anodized aluminum oxide, for example, from one its surface to another surface perpendicular to them. Micropoints can be grouped in bundles which present macropoints. Contact to points is realized by deposition of layer of current-conductive material or material with high specific resistance of which currentstabilizing resistors 12 connecting each point to proper contact are made on nonemitting side of plate. Layer of current-conductive material can be fabricated either in the form of lattice 11 so that each bundle of micropoints is located in center of cell of this lattice or solid. Controlling film electrode 9 with holes corresponding to each bundle of micropoints or to each metallized pore can be formed on emitting surface of plate. Material with negative affinity to electron, for instance, particles of diamond, can be deposited on ends of micropoints or internal parts of pores can be filled up with material of low output, for instance, by barium compounds, which gradually diffuse to ends of micropoints. Given cathode can be employed in electron device for optical display of information which can include besides matrix autoemission cathode 3 comprising point emitters with cathode contact tracks 2 and current-stabilizing resistors 12 clear anode 8 with luminophor coat 6 and conductive layer 7. Controlling film electrode which as anode can be fabricated in the form of stripes 9 which projection on cathode is perpendicular to tracks of conductive material can be deposited on emitting side of dielectric plate. Integrated spacer 5 can be formed on emitting surface of dielectric plate. EFFECT: diminished manufacturing cost of structure, enhanced density of current and its stability, design of device with high uniformity of glow, low capacitance and integrated spacer. 20 cl, 25 dwg