Patent ID: 6452319
Filing Date: 2002-09-17
Classification: H01J

Abstract:
An electrode unit of an electron gun for a cathode ray tube comprising:an outer rim electrode having a large-diameter electron beam passing hole through which three electron beams pass; and an inner electrode installed within the outer rim electrode and having a central electron beam passing hole disposed at its center and side electron beam passing holes disposed at opposite sides of the central electron beam passing hole, the side electron beam passing holes having respective peripheries, each periphery including first and second curved portions having different curvatures, and first and second straight portions directly connecting opposite ends of the first and second curved portions to each other, wherein side of the side electron beam passing holes closest to the central electron beam passing hole are curved, and sides of the side electron beam passing holes opposite the sides closest to the central electron beam passing hole are curved, and vertical and horizontal dimensions of the side electron beam passing holes are identical to each other.