Title:
CIRCULAR ELECTRON EMISSION ELEMENT AND CELL STIMULATION DEVICE
Document Type and Number:
Japanese Patent JP2020080249
Kind Code:
A
Abstract:
To provide a circular electron emission element capable of effectively securing an electron emission region of the electron emission element and improving uniformity of an electron emission amount in the electron emission region.SOLUTION: A circular electron emission element comprises: a lower electrode; a surface electrode facing the lower electrode; an intermediate layer disposed between the lower electrode and the surface electrode; and an insulation layer including an opening. The insulation layer is disposed between the lower electrode and the intermediate layer or between the intermediate layer and the surface electrode. The lower electrode, the intermediate layer and the surface electrode are provided in such a manner that a potential difference is generated between the lower electrode and the surface electrode, thereby causing a current to flow to the intermediate layer and emitting electrons from an electron emission region of the surface electrode. The electron emission region is defined by the opening of the insulation layer, and the opening is a circle or a partially missed circle.SELECTED DRAWING: Figure 1
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Inventors:
SHINKAWA KOJI
IWAMATSU TADASHI
TAKASAKI MAI
IWAMATSU TADASHI
TAKASAKI MAI
Application Number:
JP2018213027A
Publication Date:
May 28, 2020
Filing Date:
November 13, 2018
Export Citation:
Assignee:
SHARP KK
International Classes:
H01J1/312; C12M1/42
Attorney, Agent or Firm:
Shintaro Nogawa
Shinji Kai
Yusuke Kaneko
Kiyoshi Inamoto
Masami Tomita
Shinji Kai
Yusuke Kaneko
Kiyoshi Inamoto
Masami Tomita