PLASMA PRODUCING DEVICE COMPRISING MAGNESIUM OXIDE MICROPARTICLES HAVING SPECIFIC CATHODOLUMINESCENCE CHARACTERISTICS

摘要

PURPOSE: A plasma device including a magnesium oxide fine particle of a specific cathode light-emitting property is provided to lower discharge voltage and reduce discharge delay time by including the magnesium oxide fine particle. CONSTITUTION: A front substrate(1) and back substrate faces each other leaving discharge space in interval. Electrode is inscribed in each of substrates. A dielectric layer coats each of electrodes. An MgO protection layer(4) is located in surface of the front surface among the dielectric layer. A fine particle layer(11) of a magnesium oxide fine particle has not cathode light-emitting peak in 300 nm or less wavelength area, has the cathode light-emitting peak between 350 and 500 nm, and has at least one cathode light-emitting peak between 550~650 nm and 700~800 nm on the MgO protection layer.