The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 07, 2026

Filed:

Sep. 01, 2021
Applicant:

Nhk Spring Co., Ltd., Yokohama, JP;

Inventors:

Toshihiko Hanamachi, Yokohama, JP;

Shuhei Morota, Yokohama, JP;

Masaru Takimoto, Yokohama, JP;

Yoshihito Araki, Yokohama, JP;

Hibiki Yokoyama, Yokohama, JP;

Masahiro Fujii, Yokohama, JP;

Assignee:

NHK SPRING CO., LTD., Yokohama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/683 (2006.01); C23C 4/12 (2016.01); H01J 37/32 (2006.01);
U.S. Cl.
CPC ...
H01L 21/6833 (2013.01); C23C 4/12 (2013.01); H01J 37/32715 (2013.01); H01J 2237/334 (2013.01);
Abstract

A stage includes a base material having a first surface and a second surface adjacent to the first surface, and an insulating film including a plurality of particles, each of the plurality of particles having a flat surface. The flat surface included in the insulating film is provided along the first surface and the second surface. The base material includes a third surface in a direction 180 degrees opposite to the first surface, and a part of the flat surface included in the insulating film is provided along the third surface, and a surface obtained by extending the first surface and a surface obtained by extending the second surface intersect at 90 degrees. The base material includes a third surface in a direction 180 degrees opposite to the first surface, and a part of the flat surface included in the insulating film is provided along the third surface.


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