EP 0406503 A3 19910724 - COLOR CATHODE RAY TUBE LACKING INNER SHIELD
Title (en)
COLOR CATHODE RAY TUBE LACKING INNER SHIELD
Publication
Application
Priority
KR 890009624 A 19890706
Abstract (en)
[origin: EP0406503A2] A color cathode ray tube (10b) lacking an inner shield (16) is disclosed which is characterized in that the inner surface of the funnel is coated with a conductive layer (18b), the conductive layer being made of a high permeability metal or an alloy of high permeability metals, or being made of a high permeability metal or an alloy of high permeability metals and a high resistance material. According to the present invention, the inner shield is totally removed, and therefore, the manufacturing process for the products is simplified and the manufacturing cost is saved.
IPC 1-7
IPC 8 full level
H01J 29/02 (2006.01); H01J 29/06 (2006.01); H01J 29/88 (2006.01)
CPC (source: EP KR)
H01J 29/02 (2013.01 - KR); H01J 29/06 (2013.01 - EP); H01J 29/88 (2013.01 - EP KR); H01J 2229/882 (2013.01 - EP)
Citation (search report)
- [X] US 3443138 A 19690506 - SCHWARTZ JAMES W
- [X] DE 2050841 A1 19720504 - LICENTIA GMBH
- [A] FR 2441918 A1 19800613 - GTE SYLVANIA INC [US]
- [A] US 2721995 A 19551025 - WILEY FRIEND ALBERT
- [A] PATENT ABSTRACTS OF JAPAN, vol. 9, no. 27 (E-294)[1750], 6th February 1985; & JP-A-59 171 439 (HITACHI SEISAKUSHO K.K.) 27-09-1984
- [A] R.C. WEAST (ed.): "CRC Handbook of Chemistry and Physics", 63rd edition 1982-1983, Chemical Rubber Co., Cleveland, Ohio, US
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0406503 A2 19910109; EP 0406503 A3 19910724; CN 1048631 A 19910116; ES 2025871 A6 19920401; JP H0343943 A 19910225; KR 910003733 A 19910228; KR 910010104 B1 19911216; MY 105192 A 19940830
DOCDB simple family (application)
EP 89403138 A 19891115; CN 90100749 A 19900125; ES 9000117 A 19900117; JP 28728789 A 19891102; KR 890009624 A 19890706; MY PI19900098 A 19900119