GB2093634B - Capacitive keyswitch circuit boards - Google Patents

Capacitive keyswitch circuit boards

Info

Publication number
GB2093634B
GB2093634B GB8205132A GB8205132A GB2093634B GB 2093634 B GB2093634 B GB 2093634B GB 8205132 A GB8205132 A GB 8205132A GB 8205132 A GB8205132 A GB 8205132A GB 2093634 B GB2093634 B GB 2093634B
Authority
GB
United Kingdom
Prior art keywords
circuit boards
keyswitch circuit
capacitive
capacitive keyswitch
boards
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
GB8205132A
Other versions
GB2093634A (en
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of GB2093634A publication Critical patent/GB2093634A/en
Application granted granted Critical
Publication of GB2093634B publication Critical patent/GB2093634B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/01—Details
    • H01G5/013—Dielectrics
    • H01G5/0134—Solid dielectrics
    • H01G5/0136—Solid dielectrics with movable electrodes
    • 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
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
    • 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
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H05K1/0239—Signal transmission by AC coupling
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0286—Programmable, customizable or modifiable circuits
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/09—Use of materials for the conductive, e.g. metallic pattern
    • H05K1/092—Dispersed materials, e.g. conductive pastes or inks
    • H05K1/095—Dispersed materials, e.g. conductive pastes or inks for polymer thick films, i.e. having a permanent organic polymeric binder
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10053—Switch
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10196—Variable component, e.g. variable resistor
    • 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
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3452—Solder masks

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Manufacture Of Switches (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
GB8205132A 1981-02-25 1982-02-22 Capacitive keyswitch circuit boards Expired GB2093634B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23825481A 1981-02-25 1981-02-25

Publications (2)

Publication Number Publication Date
GB2093634A GB2093634A (en) 1982-09-02
GB2093634B true GB2093634B (en) 1985-01-09

Family

ID=22897118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8205132A Expired GB2093634B (en) 1981-02-25 1982-02-22 Capacitive keyswitch circuit boards

Country Status (10)

Country Link
JP (1) JPS57154721A (en)
BR (1) BR8200678A (en)
DE (1) DE3205936A1 (en)
DK (1) DK83082A (en)
FI (1) FI820630L (en)
FR (1) FR2500714B1 (en)
GB (1) GB2093634B (en)
IT (1) IT1153461B (en)
NO (1) NO820582L (en)
SE (1) SE8201140L (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778817A (en) * 1972-08-02 1973-12-11 Xerox Corp Output keyboard apparatus and signal translating methods therefor
US3921167A (en) * 1974-06-14 1975-11-18 Ibm Capacitive circuitboard
US4049844A (en) * 1974-09-27 1977-09-20 General Electric Company Method for making a circuit board and article made thereby
US4090229A (en) * 1976-09-30 1978-05-16 Becton, Dickinson Electronics Company Capacitive key for keyboard
GB1584345A (en) * 1977-05-11 1981-02-11 Alphameric Keyboards Ltd Keyboards
DE3000940C2 (en) * 1979-01-12 1984-02-02 Kollmorgen Technologies Corp., 75201 Dallas, Tex. Mixing for masking masks and layer formers to be applied by screen printing

Also Published As

Publication number Publication date
FR2500714A1 (en) 1982-08-27
DE3205936A1 (en) 1982-10-07
GB2093634A (en) 1982-09-02
FI820630L (en) 1982-08-26
FR2500714B1 (en) 1985-08-23
SE8201140L (en) 1982-08-26
IT1153461B (en) 1987-01-14
JPS57154721A (en) 1982-09-24
BR8200678A (en) 1982-12-14
DK83082A (en) 1982-08-26
IT8219775A0 (en) 1982-02-19
NO820582L (en) 1982-08-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee