GB1100544A - Improvements in or relating to printed circuits - Google Patents

Improvements in or relating to printed circuits

Info

Publication number
GB1100544A
GB1100544A GB1523865A GB1523865A GB1100544A GB 1100544 A GB1100544 A GB 1100544A GB 1523865 A GB1523865 A GB 1523865A GB 1523865 A GB1523865 A GB 1523865A GB 1100544 A GB1100544 A GB 1100544A
Authority
GB
United Kingdom
Prior art keywords
copper
relating
printed circuits
vapour deposited
tartrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1523865A
Inventor
John Duckles Underwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1523865A priority Critical patent/GB1100544A/en
Priority to NL6604584A priority patent/NL6604584A/xx
Priority to FR56993A priority patent/FR1475306A/en
Priority to BE679254D priority patent/BE679254A/xx
Publication of GB1100544A publication Critical patent/GB1100544A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/46—Manufacturing multilayer circuits
    • H05K3/4685—Manufacturing of cross-over conductors

Abstract

An electroless copper plating solution used in printed circuit manufacture comprises:- .Copper Tartrate.5.9 gm .Sodium Potassium Tartrate.9.7 gm .Sodium Hydroxide.9.0 gm .Ethylene-diamine-tetra-acetic acid.4.0 gm .Distilled water to.1.01 When ready for use, 120 ml. of formaldehyde solution is added The bath is used at 70 DEG F. The insulating substrate may first be sensitized. The copper may also be vapour deposited and an outer coating of SiO may also be vapour deposited through a mask.
GB1523865A 1965-04-09 1965-04-09 Improvements in or relating to printed circuits Expired GB1100544A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1523865A GB1100544A (en) 1965-04-09 1965-04-09 Improvements in or relating to printed circuits
NL6604584A NL6604584A (en) 1965-04-09 1966-04-05
FR56993A FR1475306A (en) 1965-04-09 1966-04-08 Improvements in printed circuit manufacturing methods
BE679254D BE679254A (en) 1965-04-09 1966-04-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1523865A GB1100544A (en) 1965-04-09 1965-04-09 Improvements in or relating to printed circuits

Publications (1)

Publication Number Publication Date
GB1100544A true GB1100544A (en) 1968-01-24

Family

ID=10055510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1523865A Expired GB1100544A (en) 1965-04-09 1965-04-09 Improvements in or relating to printed circuits

Country Status (4)

Country Link
BE (1) BE679254A (en)
FR (1) FR1475306A (en)
GB (1) GB1100544A (en)
NL (1) NL6604584A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259784A3 (en) * 1986-09-11 1988-10-12 General Electric Company Photo-imaged dielectric layer

Also Published As

Publication number Publication date
NL6604584A (en) 1966-10-10
FR1475306A (en) 1967-03-31
BE679254A (en) 1966-10-10

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