Display apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAkira Hayama, Koichi Tsunoda
Life of this patent
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Abstract
A display apparatus comprises: a rear plate which has an electron-emitting device; a face plate which has an anode electrode and a potential defining electrode; and a plate spacer which is opposite to the anode electrode and the potential defining electrode, between the rear plate and the face plate. An insulative base member of the spacer has a recessed portion which opposes to the anode electrode, the potential defining electrode, and a portion of the face plate between the anode electrode and the potential defining electrode. Thus, electric discharges between the spacer and the anode electrode and between the spacer and the potential defining electrode can be suppressed.
Claims11
A display apparatus comprising:
- a rear plate which has an electron-emitting device;
- a face plate which is opposite to the rear plate, and has an anode electrode defined with a potential higher than a potential of the electron-emitting device, and a potential defining electrode positioned apart from the anode electrode and defined with a potential lower than the potential of the anode electrode;
- and
- a plate spacer comprising at least an insulative base member and being arranged between the rear plate and the face plate and having a face opposing to the face plate, the face partly contacting with the anode electrode and the potential defining electrode,
- wherein the insulative base member has a recessed portion in the face, and the recessed portion opposes through a gap to a portion of the face plate between the anode electrode and the potential defining electrode,
- an end of the anode electrode on a side of the potential defining electrode is positioned closer to the potential defining electrode than an edge of the recessed portion on a side of the anode electrode, and
- an end of the potential defining electrode on a side of the anode electrode is positioned closer to the anode electrode than an edge of the recessed portion on a side of the potential defining electrode.
Dependencies are inferred from the claim text.