Title:
【発明の名称】陰極線管
Document Type and Number:
Japanese Patent JP2003511821
Kind Code:
A
Abstract:
A cathode ray tube comprising an electron source and an electron beam guidance cavity having an input aperture and an output aperture, wherein at least a part of the wall of the electron beam guidance cavity near the output aperture comprises an insulating material having a secondary emission coefficient delta1 for cooperation with the cathode. Furthermore, the cathode ray tube comprises a first electrode which is connectable to a first power supply for applying, in operation, an electric field with a first field strength E1 between the cathode and the output aperture. delta1 and E1 have values which allow electron transport through the electron beam guidance cavity. The cathode ray tube further comprises a conventional main lens to obtain a spot on a display screen. According to the invention, an electron lens is placed between the exit of the cavity and the main lens for directing the electron beam at a predetermined angle towards the entrance of the main lens.
Inventors:
NACE SEPHAN DEL FERT
Heraldas Hee Phan Holcomb
Petras Harf Tronpenhard
Heraldas Hee Phan Holcomb
Petras Harf Tronpenhard
Application Number:
JP2001529001A
Publication Date:
March 25, 2003
Filing Date:
September 25, 2000
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H01J3/02; H01J29/48; (IPC1-7): H01J29/48
Attorney, Agent or Firm:
Sugimura Kosaku (1 person outside)