Inner shield color cathode ray tube
AssigneeOrion Electric Co., Ltd.
InventorHyung-Jin Kim
Life of this patent
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Abstract
The invention relates to an inner shield for color cathode ray tube. The inner shield has two long side parts and two short side parts. Each of two long sides has an opening part which comprises an inclined part and an U-shape recessed edge. Otherwise, the opening part may comprise an vertical part and an U-shape recessed edge. Each of two short sides has a V-shaped opening. The inner shield of the invention is capable of surely shielding unintended external magnetic field.
Claims9
An inner shield for color cathode ray tube, composed of two long side parts facing each other and two short side parts facing each other, which form a small opening part at a electron gun's side and a large opening part at a panel's side, comprising:
- a plurality of first recessed parts recessed for a given depth at one or more slopes from each of diagonal points of said long side parts at a small opening part's side towards a large opening part's side of said long side parts;
- and
- a plurality of second recessed parts recessed for a given depth in a round shape in connection with said first recessed parts,
- wherein said slopes are corresponding to the ratio of a length of said first recessed parts in the direction of center axis of said long side parts to a length of said first recessed parts at the right angle to center axis of said long side parts.
Dependencies are inferred from the claim text.