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US Patent 7816847 Dielectric electron emitter comprising a polycrystalline substance

Patent 7816847 was granted and assigned to NGK Insulators on October, 2010 by the United States Patent and Trademark Office.

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Patent abstract

A dielectric device of higher performance is provided. An electron emitter, to which the dielectric device is applied is provided with: an emitter including a dielectric; and an upper electrode and a lower electrode to which drive voltage is applied in order to emit electrons. The emitter is formed by the aerosol deposition method or the sol impregnation method.

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