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GB2230645B - Hermetic crystal packages - Google Patents

Hermetic crystal packages

Info

Publication number
GB2230645B
GB2230645B GB9005777A GB9005777A GB2230645B GB 2230645 B GB2230645 B GB 2230645B GB 9005777 A GB9005777 A GB 9005777A GB 9005777 A GB9005777 A GB 9005777A GB 2230645 B GB2230645 B GB 2230645B
Authority
GB
United Kingdom
Prior art keywords
hermetic
crystal packages
packages
hermetic crystal
crystal
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 - Fee Related
Application number
GB9005777A
Other versions
GB9005777D0 (en
GB2230645A (en
Inventor
Mervyn Keith Hobden
Philip Alan Durrant
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.)
Marconi Electronic Devices Ltd
Plessey Semiconductors Ltd
Original Assignee
Marconi Electronic Devices Ltd
Plessey Semiconductors 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 Marconi Electronic Devices Ltd, Plessey Semiconductors Ltd filed Critical Marconi Electronic Devices Ltd
Publication of GB9005777D0 publication Critical patent/GB9005777D0/en
Publication of GB2230645A publication Critical patent/GB2230645A/en
Application granted granted Critical
Publication of GB2230645B publication Critical patent/GB2230645B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/0504—Holders or supports for bulk acoustic wave devices
    • H03H9/0514—Holders or supports for bulk acoustic wave devices consisting of mounting pads or bumps
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/88—Mounts; Supports; Enclosures; Casings
    • H10N30/883—Additional insulation means preventing electrical, physical or chemical damage, e.g. protective coatings

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB9005777A 1989-03-22 1990-03-14 Hermetic crystal packages Expired - Fee Related GB2230645B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898906619A GB8906619D0 (en) 1989-03-22 1989-03-22 Hermetic crystal packages

Publications (3)

Publication Number Publication Date
GB9005777D0 GB9005777D0 (en) 1990-05-09
GB2230645A GB2230645A (en) 1990-10-24
GB2230645B true GB2230645B (en) 1993-04-28

Family

ID=10653828

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898906619A Pending GB8906619D0 (en) 1989-03-22 1989-03-22 Hermetic crystal packages
GB9005777A Expired - Fee Related GB2230645B (en) 1989-03-22 1990-03-14 Hermetic crystal packages

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898906619A Pending GB8906619D0 (en) 1989-03-22 1989-03-22 Hermetic crystal packages

Country Status (1)

Country Link
GB (2) GB8906619D0 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040561A (en) * 1978-11-16 1980-08-28 Suisse Horlogerie Piezoelectric bar resonator
EP0222272A2 (en) * 1985-11-07 1987-05-20 Schott Glaswerke Flat housing for hermetically enclosing piezo-electric components
US4750246A (en) * 1984-10-29 1988-06-14 Hughes Aircraft Company Method of making compensated crystal oscillator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040561A (en) * 1978-11-16 1980-08-28 Suisse Horlogerie Piezoelectric bar resonator
US4750246A (en) * 1984-10-29 1988-06-14 Hughes Aircraft Company Method of making compensated crystal oscillator
EP0222272A2 (en) * 1985-11-07 1987-05-20 Schott Glaswerke Flat housing for hermetically enclosing piezo-electric components
US4742182A (en) * 1985-11-07 1988-05-03 Schott Glaswerke Flatpack for hermetic encapsulation of piezoelectric components

Also Published As

Publication number Publication date
GB8906619D0 (en) 1989-05-04
GB9005777D0 (en) 1990-05-09
GB2230645A (en) 1990-10-24

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980314