EP 0806780 A1 19971112 - Zinc phosphate coating for varistor and method
Title (en)
Zinc phosphate coating for varistor and method
Title (de)
Zink-Phosphatbeschichtung für Varistor und Verfahren zur Herstellung
Title (fr)
Revêtement en phosphate de zinc pour varistor et méthode de fabrication
Publication
Application
Priority
EP 96400993 A 19960509
Abstract (en)
A method of providing a semiconductor device (20) with an inorganic electrically insulative layer (34) the device having exposed semiconductor surfaces (34) and electrically conductive metal end terminations (30) in which the device is reacted with phosphoric acid to form a phosphate on the exposed surfaces (34) of the semiconductor but not on the metal end terminations (30), and in which the device is thereafter barrel plated in a conventional electrical barrel plating process and the plating is provided only on the end terminations (30) because the phosphate is not electrically conductive. <IMAGE>
IPC 1-7
IPC 8 full level
H01C 1/034 (2006.01); H01C 7/102 (2006.01)
CPC (source: EP)
H01C 1/034 (2013.01); H01C 7/102 (2013.01)
Citation (search report)
- [A] GB 2100246 A 19821222 - ARMSTRONG WORLD IND INC
- [AD] US 5115221 A 19920519 - COWMAN STEPHEN P [IE]
- [A] GB 2044531 A 19801015 - TDK ELECTRONICS CO LTD & US 4316171 A 19820216 - MIYABAYASHI SUSUMU, et al
- [E] EP 0716429 A2 19960612 - HARRIS CORP [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 303 (E - 1228) 3 July 1992 (1992-07-03)
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 343 (E - 1106) 30 August 1991 (1991-08-30)
- [A] PATENT ABSTRACTS OF JAPAN vol. 014, no. 016 (E - 872) 12 January 1989 (1989-01-12)
- [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 514 (E - 1433) 16 September 1993 (1993-09-16)
Designated contracting state (EPC)
AT BE NL
DOCDB simple family (publication)
EP 0806780 A1 19971112; EP 0806780 B1 20000802; AT E195198 T1 20000815
DOCDB simple family (application)
EP 96400993 A 19960509; AT 96400993 T 19960509