Patent ID: 8125132
Filing Date: 2012-02-28
Classification: H01J

Abstract:
1. 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.