Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2010-04-29
2011-12-27
Macchiarolo, Peter (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C313S446000
Reexamination Certificate
active
08084932
ABSTRACT:
Deformation of a gate by Coulomb force generated when operating an electron-emitting device is inhibited by appropriately maintaining relationship between film thickness h of the gate and distance L from an outer surface of an insulating member to an inner surface of a concave portion. According to this, in an electron beam apparatus provided with a laminate-type electron-emitting device, the deformation of the gate is prevented to reduce variation in electron emission characteristics, thereby preventing the element from being broken.
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European Search Report issued by the European Patent Office in European Application No. 10159852.2.—6 pages.
Azuma Hisanobu
Sumiya Toshiharu
Suwa Takanori
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Macchiarolo Peter
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