Patent ID: 8080943

Claim:
An image display apparatus, comprising: a rear plate which has a plurality of scanning wirings and a plurality of signal wirings arranged in a matrix and a plurality of electron-emitting devices arranged respectively at intersection points of the scanning wirings and the signal wirings; a face plate which has a light-emitting member for emitting light due to collision of electrons; a high-voltage power source which applies a high voltage to the light-emitting member; a current detecting unit which is connected between the light-emitting member and the high-voltage power source in order to detect an emission current from the electron-emitting devices; a control unit which controls a voltage to be applied to the electron-emitting devices based on detection result of the current detecting unit; and a bypass capacitor, wherein one end of the bypass capacitor is connected between the high-voltage power source and the current detecting unit, and the other end of the bypass capacitor is connected to a potential regulating electrode, wherein an electrostatic capacitance Cp of the bypass capacitor satisfies a following formula: Cp>∈A/d where ∈: permittivity of vacuum, A: an area of the light-emitting member, and d: a distance between the rear plate and the face plate.