Patent ID: 11894224
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A high voltage driving device comprising:
a housing; and
a cathode, an anode, and an insulation structure, which are disposed in the housing,
wherein the cathode and the anode are spaced apart from each other with the insulation structure therebetween,
wherein the insulation structure comprises:
a first solid insulator disposed adjacent to the cathode; and
a second solid insulator disposed adjacent to the anode,

wherein the first solid insulator has first volumetric resistivity less than second volumetric resistivity of the second solid insulator, and the first solid insulator contacts the cathode,
wherein each of the first solid insulator and the second solid insulator comprises alumina (Al2O3) and titania (TiO2) doped in the alumina,
the titania doped in the alumina of the first solid insulator has a concentration of about 2% or more, and
the titania doped in the alumina of the second solid insulator has a concentration less than about 2%.