GB794973A - Improvements relating to the manufacture of printed electrical circuit components - Google Patents

Improvements relating to the manufacture of printed electrical circuit components

Info

Publication number
GB794973A
GB794973A GB799456A GB799456A GB794973A GB 794973 A GB794973 A GB 794973A GB 799456 A GB799456 A GB 799456A GB 799456 A GB799456 A GB 799456A GB 794973 A GB794973 A GB 794973A
Authority
GB
United Kingdom
Prior art keywords
conducting
semi
coating
resistive
printing
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
GB799456A
Inventor
Fred Ashworth
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB799456A priority Critical patent/GB794973A/en
Publication of GB794973A publication Critical patent/GB794973A/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
    • H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/04—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching
    • H05K3/046—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching by selective transfer or selective detachment of a conductive layer
    • H05K3/048—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching by selective transfer or selective detachment of a conductive layer using a lift-off resist pattern or a release layer pattern

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)

Abstract

794,973. Electric resistors; capacitors; semiconductors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 28, 1954 [Sept. 28, 1953], No. 7994/56. Divided out of 794,971. Class 37. A printed circuit component is made by printing a negative mask of the desired pattern on an insulating backing, applying by vacuum deposition a conducting, resistive or semi-conducting coating over the whole, forming a subsequent layer by further printing and coating and removing the masking material and coatings superimposed thereon. A negative mask of the desired resistive or semi-conducting areas may first be printed on the base and a coating of resistive or semi-conducting material applied after which the mask and overlying coating are removed. An alternative method comprises printing on the base a negative mask of the desired resistive or semi-conducting pattern, applying a coating of resistive or semi-conducting material, printing a second negative mask of the desired conducting pattern thereover, coating this with conductive material, which adheres to the exposed areas of the resistive or semi-conducting coating, then removing the masking layers and any superimposed material. Two or more successive layers of resistance material may be applied to obtain the desired resistivity. A nickel-chromium alloy may be used for the resistance material and selenium or germanium for semi-conductors. The insulating base may comprise polyester-bonded glass laminates, glass, paper-based. " Bakelite " board or " Araldite " (" Bakelite " and " Araldite " are Registered Trade Marks). The component may be rolled or folded and encased in plastic, wire leads soldered to the films of nickelchromium and being brought out for connection. Condensers may be made of metallizing an area on both surfaces of an insulator or metallizing similar areas on one side of a sheet insulator which is then folded, additional layers being placed within the folds if necessary.
GB799456A 1953-09-28 1953-09-28 Improvements relating to the manufacture of printed electrical circuit components Expired GB794973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB799456A GB794973A (en) 1953-09-28 1953-09-28 Improvements relating to the manufacture of printed electrical circuit components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB799456A GB794973A (en) 1953-09-28 1953-09-28 Improvements relating to the manufacture of printed electrical circuit components

Publications (1)

Publication Number Publication Date
GB794973A true GB794973A (en) 1958-05-14

Family

ID=9843737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB799456A Expired GB794973A (en) 1953-09-28 1953-09-28 Improvements relating to the manufacture of printed electrical circuit components

Country Status (1)

Country Link
GB (1) GB794973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382154A (en) * 1979-12-03 1983-05-03 Agence Nationale De Valorisation De La Recherche (Anvar) Device sensitive to a temperature gradient and its application for constructing a thermal fluxmeter or solar sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382154A (en) * 1979-12-03 1983-05-03 Agence Nationale De Valorisation De La Recherche (Anvar) Device sensitive to a temperature gradient and its application for constructing a thermal fluxmeter or solar sensor

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