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US 6,737,817 B2Granted
Cathode ray tube apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTakahiko Yoshinaga
Life of this patent
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Abstract
A deflection yoke arranged on an outer part of a funnel of a cathode ray tube includes a holder for housing a ferrite member as a magnetic field correction part for varying a main magnetic field, and the ferrite member is fixed and held by inner walls as resilient members in a housing portion of the holder, thereby holding the ferrite member at the desired position with a simple construction and realizing a cathode ray tube apparatus with reduction of cost and secure convergence correction.
Claims2
A cathode ray tube apparatus comprising:
- a cathode ray tube comprising an envelope composed of a panel and a funnel;
- and
- a deflection yoke arranged on an outer part of the funnel of the cathode ray tube and having a vertical deflection coil and a horizontal deflection coil for generating a main magnetic field, the deflection yoke further comprising a holder for housing a magnetic field correction part for varying the main magnetic field, the holder comprising a resilient member supported in a cantilever fashion,
- wherein the magnetic field correction part is fixed and held by the resilient member.
1 more element
Dependencies are inferred from the claim text.