GLASS BULB FOR CATHODE RAY TUBE AND METHOD FOR MANUFACTURING THE SAME

Title:

GLASS BULB FOR CATHODE RAY TUBE AND METHOD FOR MANUFACTURING THE SAME

Document Type and Number:

WIPO Patent Application WO/2003/063194

Kind Code:

A1

Abstract:

In order to obtain a lightweight glass bulb having high safety and reliability by chemical reinforcement ensuring a compression stress layer of effective thickness even for a high tensile vacuum stress, a fractural region of low mechanical strength on the outer surface at at least the body section (4) of a glass funnel where a maximum tensile vacuum stress is generated is partially reinforced chemically through combination of a field assist method and a paste chemical reinforcing method thus providing in that region a chemically reinforced part (9), where the concentration of implanted ions is distributed inward from the surface substantially according to a step function.

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Inventors:

SUGAWARA TSUNEHIKO (JP)
UEKI MIKIO (JP)

Application Number:

PCT/JP2002/005796

Publication Date:

July 31, 2003

Filing Date:

June 11, 2002

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
SUGAWARA TSUNEHIKO (JP)
UEKI MIKIO (JP)

International Classes:

C03C21/00; C03C23/00; H01J9/24; H01J29/86; (IPC1-7): H01J29/86; C03C3/105; C03C21/00; H01J9/24

Domestic Patent References:

WO1999048824A1

1999-09-30

Foreign References:

JP2000348643A	2000-12-15
JPS5171314A	1976-06-21

Other References: