JPS54131850A - Crystal oscillator for watch - Google Patents
Crystal oscillator for watchInfo
- Publication number
- JPS54131850A JPS54131850A JP3939378A JP3939378A JPS54131850A JP S54131850 A JPS54131850 A JP S54131850A JP 3939378 A JP3939378 A JP 3939378A JP 3939378 A JP3939378 A JP 3939378A JP S54131850 A JPS54131850 A JP S54131850A
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic capacity
- crystal oscillator
- film
- capacity
- parallel
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
- H03H9/1021—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being of the cantilever type
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
PURPOSE:To secure the flat frequency temperature characteristics for the crystal oscillator as well as to increase the accuracy by connecting the electrostatic capacity formed by a pair of metal films provided on the surface of the sealed container in parallel to the electrostatic capacity the crystal oscillator itself owns. CONSTITUTION:The airtight container of the crystal oscillator composed with bottomed container 1 and the plate-type component 2, and metal thin film 5 and 6 are formed on the surface of conponent 2. And film 5 and 6 are connected to the electrode of crystal oscillation bar 3 to produce electric field E, and thus the electrostatic capacity which is determined by gap width g and continuous length l of the gap of field E can be secured. In other words, both g and l are set freely to form the electrostatic capacity identical to the parallel capacity possessed by bar 3. And the capacity of the crystal oscillator can be set to the proper value by controlling the electrostatic capacity produced between film 5 and 6. For example, if film 5 is cut off like A by the laser beam, the electrostatic capacity reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3939378A JPS54131850A (en) | 1978-04-04 | 1978-04-04 | Crystal oscillator for watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3939378A JPS54131850A (en) | 1978-04-04 | 1978-04-04 | Crystal oscillator for watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54131850A true JPS54131850A (en) | 1979-10-13 |
Family
ID=12551745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3939378A Pending JPS54131850A (en) | 1978-04-04 | 1978-04-04 | Crystal oscillator for watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54131850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0246431U (en) * | 1988-09-22 | 1990-03-29 | ||
| JP2005244939A (en) * | 2004-01-29 | 2005-09-08 | Seiko Epson Corp | Package for electronic component, electronic component and method of manufacturing piezoelectric device |
-
1978
- 1978-04-04 JP JP3939378A patent/JPS54131850A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0246431U (en) * | 1988-09-22 | 1990-03-29 | ||
| JP2005244939A (en) * | 2004-01-29 | 2005-09-08 | Seiko Epson Corp | Package for electronic component, electronic component and method of manufacturing piezoelectric device |
| JP4692722B2 (en) * | 2004-01-29 | 2011-06-01 | セイコーエプソン株式会社 | Electronic component package and electronic component |
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