Patent ID: 7298074
Filing Date: 2007-11-20
Classification: H01J

Abstract:
1. An image forming device comprising: a rear plate having a conductor set to a low voltage; an electron emitter disposed on the rear plate, the electron emitter including the conductor; a face plate having an electrode set to a high voltage, the face plate facing the rear plate; image forming means provided on the face plate, the image forming means including the electrode; a spacer electrically connected to the conductor and the electrode; the spacer comprising: an insulating substrate having a first end surface facing the rear plate, a second end surface facing the electrode, and side surfaces connecting the first end surface and the second end surface; a first high-resistance film covering the side surfaces of the insulating substrate; and a second high-resistance film covering at least one of the first end surface and the second end surface of the insulating substrate and having a sheet resistance greater than or equal to a sheet resistance of the first high-resistance film; wherein the spacer, the conductor and the electrode are electrically connected via a third high-resistance film interposed between the conductor or the electrode and the second high-resistance film, and wherein the resistivity ρ