| 发明名称 |
Strengthened glass bulb for a cathode ray tube |
| 摘要 |
A glass bulb for a cathode ray tube in which a compressive stress is formed in a surface of a panel portion by physically strengthening; the maximum wall thickness tF of a face portion 7 on at least one axis of a long axis and a short axis of the face portion and the maximum wall thickness tR of a blend R portion satisfy 1.0</=tR/tF</=1.4; and the absolute value of a compressive stress value by physically strengthening in an area where a tensile vacuum stress is distributed after the assembling of the cathode ray tube is 7-30 MPa, whereby there is a small possibility of implosion of the glass bulb even when the wall thickness of the panel portion is made thin in comparison with a conventional glass bulb.
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| 申请公布号 |
US5925977(A) |
申请公布日期 |
1999.07.20 |
| 申请号 |
US19970958562 |
申请日期 |
1997.10.27 |
| 申请人 |
ASAHI GLASS COMPANY LTD. |
发明人 |
SUGAWARA, TSUNEHIKO;MURAKAMI, TOSHIHIDE |
| 分类号 |
C03B27/00;H01J29/86;H01J31/20;(IPC1-7):H01J31/00 |
主分类号 |
C03B27/00 |
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