CN204216859U - Quartz crystal unit base plate - Google Patents
Quartz crystal unit base plate Download PDFInfo
- Publication number
- CN204216859U CN204216859U CN201420599881.9U CN201420599881U CN204216859U CN 204216859 U CN204216859 U CN 204216859U CN 201420599881 U CN201420599881 U CN 201420599881U CN 204216859 U CN204216859 U CN 204216859U
- Authority
- CN
- China
- Prior art keywords
- base plate
- annular groove
- upper casing
- quartz crystal
- boss
- 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
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The utility model discloses a kind of quartz crystal unit base plate, described base plate comprises substrate and is protruded the boss formed by described substrate, and the outside of described boss is formed with a step surface, is provided with annular groove in described step surface.The quartz crystal unit base plate that the utility model provides, outside boss, step surface is provided with annular groove, when assembling with upper casing, fill with in the annular groove of base plate and have colloid, this upper casing lower end directly snaps in the annular groove on base plate, and so, the gap of upper casing lower end and annular groove forms colloid layer, better sealing effectiveness can be arrived, avoid the problems such as gas leakage, increase substantially vacuum degree, simultaneously, due to the bonding effect of colloid, also enhance its stability and fastness.In addition, base plate entirety adopts ellipsoidal structure, and this ellipsoidal structure and upper casing assemble the shell formed, and enclosure can be made to form high vacuum space, and vacuum degree increases substantially, and meanwhile, wafer stably can be fixed on enclosure, and its stability is higher.
Description
Technical field
The utility model relates to quartz crystal unit, particularly relates to a kind of quartz crystal unit base plate.
Background technology
Quartz-crystal resonator is the quartz crystal unit utilizing quartz crystal to be formed by packaging technology, and by quartz-crystal resonator and semiconductor, hold resistance element and combine and can form quartz oscillator, this quartz-crystal resonator and oscillator are widely used in various electronic product.
Quartz crystal unit (resonator etc.) generally comprises upper casing, base plate and wafer etc., the enclosure that wafer package is formed in upper casing and base plate, it is inner in vacuum state, and internal vacuum is the principal element affecting resonator behavior, existing quartz crystal base plate lower end is a boss structure, directly weld with upper casing, be difficult to ensure its inner condition of high vacuum degree requirement, cause its poor-performing, and due to contact area little, the easy sealing-off of welding manner or rosin joint, make its structure insecure; In addition, base plate adopts circular configuration, the base plate lower end of circular configuration directly with upper casing by welding manner fixing seal, its wafer is vacant state in upper casing, so, causes in use procedure, poor stability.
Utility model content
The purpose of this utility model is overcome deficiency of the prior art and provide one can make quartz crystal unit good airproof performance, and stability is high, well-set quartz crystal unit base plate.
The technical scheme that the utility model solution prior art problem adopts is: a kind of quartz crystal unit base plate, described base plate comprises substrate and is protruded the boss formed by described substrate, the outside of described boss is formed with a step surface, is provided with annular groove in described step surface.
Preferably, described annular groove is posted by the outer surface of described boss.
Preferably, described substrate and boss ovalize.
Preferably, described boss and described substrate are integral type structure.
Preferably, described convex edge of table is provided with rounding.
The beneficial effects of the utility model are: the quartz crystal unit base plate that the utility model provides, outside boss, step surface is provided with annular groove, when assembling with upper casing, fill with in the annular groove of base plate and have colloid, this upper casing lower end directly snaps in the annular groove on base plate, so, the gap of upper casing lower end and annular groove forms colloid layer, better sealing effectiveness can be arrived, avoid the problems such as gas leakage, increase substantially vacuum degree, reduce leak rate, meanwhile, due to the bonding effect of colloid, also enhance its stability and fastness.In addition, base plate entirety adopts ellipsoidal structure, and this ellipsoidal structure and upper casing assemble the shell formed, and enclosure can be made to form high vacuum space, and vacuum degree increases substantially, and meanwhile, wafer stably can be fixed on enclosure, and its stability is higher.
Accompanying drawing explanation
Fig. 1 is the stereogram of the utility model base plate;
Fig. 2 is the cutaway view of the utility model base plate;
Fig. 3 is the shell mechanism schematic diagram that the utility model base plate and upper casing are assembled into;
In figure: base plate 100; Substrate 10; Boss 11; Rounding 110; Step surface 12; Annular groove 121; Upper casing 200; Convex annular is along 201; Colloid 202.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below with reference to drawings and the specific embodiments describe in detail the technical solution of the utility model so as clearer, understand invention essence of the present utility model intuitively.
Shown in Fig. 2, the utility model provides a kind of quartz crystal unit base plate 100, for assembling with upper casing 200 shell forming encapsulated wafer, this base plate 100 comprises substrate 10 and is protruded the boss 11 formed by substrate 10, this boss 11 is integral type structure with substrate 10, and the outside of boss 11 is formed with a step surface 12, is provided with annular groove 121 in step surface 12, preferably, annular groove 121 is posted by the outer surface of boss 11.
Preferably, the edge of boss 11 is provided with rounding 110, and when being convenient to be that upper casing 200 assembles, rounding 110 position is played guiding and reduced drag effect, and upper casing 200 can be covered with base plate 100 accurate contraposition.
As further improvement of the utility model, substrate 10 and boss 11 ovalize, the i.e. overall ovalize of base plate 100, when base plate 100 and the upper casing 200 of this ellipsoidal structure are assembled into shell, can improve the vacuum degree of enclosure.
With reference to shown in Fig. 3, shown in Fig. 2 is the shell mechanism that base plate 100 of the present utility model forms with upper casing 200, for encapsulated wafer (not shown), form the quartz crystal units such as resonator, the lower end of upper casing 200 has outwardly convex annular along 201, fill with in the annular groove 121 of base plate 100 and have colloid 202 (being generally resin glue), upper casing 200 is pressed together on base plate 100, the convex annular of upper casing 200 lower end snaps in annular groove 121 along 201 under pressure, colloid 202 in annular groove 121 is extruded, convex annular all has colloid layer along in the gap between 201 and the annular groove 121 and surface of convex annular along 201.
So, after colloid solidification, on the one hand, due to the sealing function of colloid 202, can make to reach good sealing effectiveness between base plate 100 and upper casing 200, its enclosure formed has higher vacuum degree, avoids the problems such as gas leakage, on the other hand, due to the bonding effect of colloid 202 and the convex annular inhibition along 201, upper casing 200 can be made firmly to be fixed on base plate 100, sound construction, stability is better; Again on the one hand, the employing ellipsoidal structure of base plate 100, base plate 100 and the upper casing 200 of this ellipsoidal structure assemble the shell formed, and enclosure can be made to form higher vacuum degree, and meanwhile, wafer stably can be fixed on enclosure, and its stability is higher.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a quartz crystal unit base plate, is characterized in that: described base plate comprises substrate and protruded the boss formed by described substrate, and the outside of described boss is formed with a step surface, is provided with annular groove in described step surface.
2. quartz crystal unit base plate according to claim 1, is characterized in that: described annular groove is posted by the outer surface of described boss.
3. quartz crystal unit base plate according to claim 1, is characterized in that: described substrate and boss ovalize.
4. quartz crystal unit base plate according to claim 3, is characterized in that: described boss and described substrate are integral type structure.
5. quartz crystal unit base plate according to claim 1, is characterized in that: described convex edge of table is provided with rounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599881.9U CN204216859U (en) | 2014-10-16 | 2014-10-16 | Quartz crystal unit base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599881.9U CN204216859U (en) | 2014-10-16 | 2014-10-16 | Quartz crystal unit base plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216859U true CN204216859U (en) | 2015-03-18 |
Family
ID=52985491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420599881.9U Expired - Fee Related CN204216859U (en) | 2014-10-16 | 2014-10-16 | Quartz crystal unit base plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743857A (en) * | 2019-01-07 | 2019-05-10 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Antivibration electronic component encapsulating structure |
-
2014
- 2014-10-16 CN CN201420599881.9U patent/CN204216859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743857A (en) * | 2019-01-07 | 2019-05-10 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Antivibration electronic component encapsulating structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |