| (19) |
 |
|
(11) |
EP 0 399 515 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
13.05.1992 Bulletin 1992/20 |
| (43) |
Date of publication A2: |
|
28.11.1990 Bulletin 1990/48 |
| (22) |
Date of filing: 23.05.1990 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
24.05.1989 JP 130867/89
24.05.1989 JP 130868/89
|
| (71) |
Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
|
Kadoma-shi,
Osaka-fu, 571 (JP) |
|
| (72) |
Inventors: |
|
- Murai, Ryuichi
Katano-shi (JP)
- Nonomura, Kinzo
Ikoma-shi (JP)
- Kitao, Satoshi
Kyoto-shi (JP)
- Hashiguchi, Jumpei
Suita-shi (JP)
- Hamada, Kiyoshi
Sakai-shi (JP)
- Takahashi, Masayuki
Katano-shi (JP)
|
| (74) |
Representative: Patentanwälte
Leinweber & Zimmermann |
|
Rosental 7/II Aufg.
80331 München
80331 München (DE) |
|
| |
|
| (54) |
Flat tube display apparatus |
(57) A flat tube display apparatus wherein a row of many electron beam generators (2)
is arranged transversely in a thin flat vacuum tube body (1) to generate a number
of beams in parallel with each other which travel in parallel with an image screen
(6) and to deflect the beams toward the image screen at a predetermined position.
The beams are guided without being widely diverged due to the provision of a number
of side walls arranged in parallel with each other to confine beams and due to the
provision of alternately strong and weak magnetic fields along the side walls. Image
brightness can be further increased by a frit-glass-laminated structure of a multiplier
or microchannel (5).