Title:
SHADOW MASK FOR CATHODE RAY TUBE
Document Type and Number:
WIPO Patent Application WO/2002/039478
Kind Code:
A1
Abstract:
A shadow mask for cathode ray tube of slot tension type having a dummy bridge formed at a slot part, characterized in that the cross-eye of the shadow mask in Y-axis direction is formed on the dummy bridge; the cross-eye in Y-axis direction being the longer state of an inside etching part in the relation between the width of the etching part at the mask outer peripheral edge part in Y-axis direction on the surface of a screen (outside etching part) and the width of the etching part at the mask center part in Y-axis direction (inside etching part); the outside etching part being a portion between the mask outer peripheral side endmost part in Y-axis direction and the mask outer peripheral side surface end part in Y-axis direction on the surface of the screen at a projected part, whereas the inside etching part being a portion between the mask center side endmost part in Y-axis direction and the mask center side surface end part in Y-axis direction on the surface of the screen at the projected part.
Inventors:
HIDESHIMA HIROFUMI (JP)
HATORI TOSHIHIRO (JP)
MAKITA AKIRA (JP)
HATORI TOSHIHIRO (JP)
MAKITA AKIRA (JP)
Application Number:
PCT/JP2001/009876
Publication Date:
May 16, 2002
Filing Date:
November 12, 2001
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
HIDESHIMA HIROFUMI (JP)
HATORI TOSHIHIRO (JP)
MAKITA AKIRA (JP)
HIDESHIMA HIROFUMI (JP)
HATORI TOSHIHIRO (JP)
MAKITA AKIRA (JP)
International Classes:
H01J29/07; (IPC1-7): H01J29/07; H01J9/14
Foreign References:
| JP2001043808A | 2001-02-16 | |||
| JP2000123753A | 2000-04-28 | |||
| JPH0278134A | 1990-03-19 | |||
| JP2001084918A | 2001-03-30 | |||
| JP2001185048A | 2001-07-06 | |||
| JP2001312976A | 2001-11-09 |
Attorney, Agent or Firm:
Ishikawa, Yasuo (17-11 Shiba 2-chom, Minato-ku Tokyo, JP)
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