ELECTRIC FIELD EMISSION ELEMENT

外国特許コード	F120006148
整理番号	S2010-0151-C0
掲載日	2012年1月12日
出願国	世界知的所有権機関（ＷＩＰＯ）
国際出願番号	2010JP070416
国際公開番号	WO 2011/059103
国際出願日	平成22年11月10日(2010.11.10)
国際公開日	平成23年5月19日(2011.5.19)
優先権データ	特願2009-259464 (2009.11.13) JP
発明の名称 （英語）	ELECTRIC FIELD EMISSION ELEMENT
発明の概要（英語）	Provided is an electric field emission element, wherein the causes of spherical aberration in relation to an emitted electron beam orbit are fundamentally eliminated or alleviated. An aberration suppression electrode (31) is disposed at a lower position, in terms of height, than an extraction gate electrode (13) such that the inner peripheral edge (31e) of the opening of the aberration suppression electrode (31) is disposed close to an emitter tip (11tp). The position of the inner peripheral edge (31e) of the opening of the aberration suppression electrode (31) is lower, in terms of height, than the position of the emitter tip (11tp). An aberration suppression voltage (Vs) which is a voltage lower than the electric potential of the emitter (11), and which controls the equipotential line near the emitter tip (11tp) in a manner such that the equipotential line becomes parallel, is applied to the aberration suppression electrode (31).
出願人（英語） ※2012年7月以前掲載分については米国以外のすべての指定国	National Institute of Advanced Industrial Science and Technology NATIONAL UNIVERSITY CORPORATION SIZUOKA UNIVERSITY
発明者（英語）	NAGAO Masayoshi YOSHIDA Tomoya NEO Yoichiro
国際特許分類(IPC)	H01J   1/304     電界放射陰極
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