CORE FOR DEFLECTION YOKE AND ITS PRODUCTION METHOD

Title:

CORE FOR DEFLECTION YOKE AND ITS PRODUCTION METHOD

Document Type and Number:

WIPO Patent Application WO/2000/055883

Kind Code:

A1

Abstract:

A core for deflection yokes hardly causing magnetic saturation by optimizing the relationship between the distribution of magnetic flux density and the cross sectional area of the core. The core is tubular and fitted between the neck portion and the funnel portion of a cathode-ray tube, and has a hole (2) flaring out like a horn from the portion (3) on the neck side toward the portion (1) on the funnel side. The portion (1) has a shape having a minor axis X and a major axis Y when viewed at the end of the aperture. The area of the cross section of the core cut by a plane including the tube axis 01 and parallel to the tube axis 01 and the density of the core are maximum in the range of angle between 30° and 65° measured around the tube axis 01 with respect to the minor axis X.

Inventors:

IWAYA HITOSHI (JP)
ITO SHINICHIRO (JP)
ANBO MINORU (JP)
ONO MASAHIRO (JP)

Application Number:

PCT/JP2000/001551

Publication Date:

September 21, 2000

Filing Date:

March 14, 2000

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TDK CORP (JP)
IWAYA HITOSHI (JP)
ITO SHINICHIRO (JP)
ANBO MINORU (JP)
ONO MASAHIRO (JP)

International Classes:

H01J29/76; (IPC1-7): H01J29/76; H01J9/236

Foreign References:

JPS6210846A	1987-01-19
JPS5028652Y1	1975-08-23
JPS60745B2	1985-01-10
JPS645814Y2	1989-02-14
JPS5711092B2	1982-03-02
JPS4885030A	1973-11-12
JPH0479133A	1992-03-12
JPS6040660B2	1985-09-12
JPH0711751U	1995-02-21
JPH01283740A	1989-11-15
JPH01319226A	1989-12-25
JPH0162639U	1989-04-21
JP2000057969A	2000-02-25

Other References: