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US 2008/0290777 A1Published application
Electron emitter structure and associated method of producing field emission displays
AssigneeSony Corporation
InventorHiroyuki OKITA
Life of this patent
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Abstract
A method of forming an electron emitter structure for use in a field emission display, or as a field emission backlight for an LCD display is provided. The electron emitter structure is formed by depositing mask elements onto an laminar Al substrate, and etching the Al substrate chemically through gaps between the mask elements, such that a spikes are formed on the substrate. These spikes are then covered with an electron emitter material. The spikes can be formed with a desired pitch/height ratio.
Claims12
A method of forming an electron emitter structure, the method comprising:
- forming on a surface of a substrate a mask with a plurality of spaced-apart openings;
- and
- chemically etching the surface of substrate through the openings in the mask, until the surface of the substrate develops a structure with a plurality of spaced-apart spikes.
An electron emitter structure, comprising:
- a substrate, one surface of the substrate being formed with a plurality of spikes;
- and
- an electron emitter material deposited over the surface of the substrate.
Dependencies are inferred from the claim text.