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公开(公告)号：US11152185B2
公开(公告)日：2021-10-19
申请号：US17177944
申请日：2021-02-17
Applicant: DENKA COMPANY LIMITED
Inventor： Toshiyuki Morishita , Hiromitsu Chatani , Shimpei Hirokawa , Toshiyuki Ibayashi , Isao Sugimoto
Abstract: An electron source capable of suppressing consumption of an electron emission material is provide. The present invention provides an electron source including: an electron emission material; and, an electron emission-suppressing material covering a side surface of the electron emission material, wherein a work function of the electron emission-suppressing material is higher than that of the electron emission material, and a thermal emissivity of the electron emission-suppressing material is lower than that of the electron emission material.
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公开(公告)号：US10957511B2
公开(公告)日：2021-03-23
申请号：US16707877
申请日：2019-12-09
Applicant: DENKA COMPANY LIMITED
Inventor： Toshiyuki Morishita , Hiromitsu Chatani , Shimpei Hirokawa , Toshiyuki Ibayashi , Isao Sugimoto
Abstract: An electron source capable of suppressing consumption of an electron emission material is provide. The present invention provides an electron source including: an electron emission material; and, an electron emission-suppressing material covering a side surface of the electron emission material, wherein a work function of the electron emission-suppressing material is higher than that of the electron emission material, and a thermal emissivity of the electron emission-suppressing material is lower than that of the electron emission material.
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公开(公告)号：US10553390B2
公开(公告)日：2020-02-04
申请号：US16317640
申请日：2017-06-29
Applicant: DENKA COMPANY LIMITED
Inventor： Toshiyuki Morishita , Hiromitsu Chatani , Shimpei Hirokawa , Toshiyuki Ibayashi , Isao Sugimoto
Abstract: An electron source capable of suppressing consumption of an electron emission material is provide. The present invention provides an electron source including: an electron emission material; and, an electron emission-suppressing material covering a side surface of the electron emission material, wherein a work function of the electron emission-suppressing material is higher than that of the electron emission material, and a thermal emissivity of the electron emission-suppressing material is lower than that of the electron emission material.
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公开(公告)号：US20210193427A1
公开(公告)日：2021-06-24
申请号：US17177944
申请日：2021-02-17
Applicant: DENKA COMPANY LIMITED
Inventor： Toshiyuki Morishita , Hiromitsu Chatani , Shimpei Hirokawa , Toshiyuki Ibayashi , Isao Sugimoto
Abstract: An electron source capable of suppressing consumption of an electron emission material is provide. The present invention provides an electron source including: an electron emission material; and, an electron emission-suppressing material covering a side surface of the electron emission material, wherein a work function of the electron emission-suppressing material is higher than that of the electron emission material, and a thermal emissivity of the electron emission-suppressing material is lower than that of the electron emission material.
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