CN207689413U - A kind of surface mount type polymer humicap of high sensitivity - Google Patents
A kind of surface mount type polymer humicap of high sensitivity Download PDFInfo
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- CN207689413U CN207689413U CN201820053723.1U CN201820053723U CN207689413U CN 207689413 U CN207689413 U CN 207689413U CN 201820053723 U CN201820053723 U CN 201820053723U CN 207689413 U CN207689413 U CN 207689413U
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- upper electrode
- humicap
- lower electrode
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Abstract
This application involves Humidity-Sensitive Capacitance Sensors, more particularly to a kind of surface mount type polymer humicap of high sensitivity, including substrate, the substrate is equipped with lower electrode, it is respectively equipped with lower electrode pad and upper electrode pad close to lower electrode, the lower electrode pad is electrically connected with lower electrode；It is covered with macromolecule wet sensory material layer on the lower electrode comprehensively, on the macromolecule wet sensory material layer and section top electrode pad overlying lid upper electrode, the upper electrode and upper electrode pad are in contact electrical connection.The utility model can be while ensureing humicap miniaturized structure, take full advantage of the performance of material, it ensure that sensitivity, the response speed of Humidity-Sensitive Capacitance Sensor, convenient for integrated with the components such as other sensors, resistance, can be applied on high-precision miniaturized circuit.
Description
Technical field
This application involves Humidity-Sensitive Capacitance Sensor more particularly to a kind of surface mount type polymer humicaps of high sensitivity.
Background technology
Polymer Humidity Sensitive Capacitance occupies critically important status in humidity sensor industry, in some high-end fields or requirement
Higher hygrometric control wet situation generally can all be selected, mainly utilize its high sensitivity, fast-response, stability and accurately
Property.With the development of hygrometric industry and the raising of application requirement, the volume requirement of humicap is also being improved at present, is being protected
Under the premise of demonstrate,proving performance, it is desirable to which the volume of humicap increasingly minimizes, and is convenient for and humidity sensor, gas sensor, electricity
Resistance etc. is integrated into circuit.
Utility model content
In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, a kind of achievable miniaturization is provided
Highly sensitive surface mount type polymer humicap.
In order to solve the above-mentioned technical problem, the utility model is realized using following scheme：
A kind of surface mount type polymer humicap of high sensitivity, including substrate, the substrate are equipped with lower electrode, tightly
Adjacent lower electrode is respectively equipped with lower electrode pad and upper electrode pad, and the lower electrode pad is electrically connected with lower electrode
It connects；Macromolecule wet sensory material layer is covered on the lower electrode comprehensively, on the macromolecule wet sensory material layer and section top
Electrode pad overlying lid upper electrode, the upper electrode and upper electrode pad are in contact electrical connection.
According to the good lower electrode of graphic making, lower electrode pad and upper electrode pad on substrate, pad is used for will
Humicap is connected on application circuit.Lower electrode pad is connected with lower electrode, upper electrode pad and lower electrode point
It opens.Macromolecule wet sensory material layer is coated using macromolecule wet sensory material, forms the dense film of thickness about 200 ~ 500nm
Layer.Upper electrode covers macromolecule wet sensory material layer, is electrically connected with upper electrode pad, with lower electrode pads insulated.Pass through
The humicap that the above structure is made can take full advantage of the performance of material, ensure that wet while ensureing miniaturized structure
The sensitivity of quick capacitance sensor, response speed can be applied to convenient for integrated with the components such as other sensors, resistance
On high-precision miniaturized circuit.
The upper electrode pad includes the first pad and the second pad, and first pad and the second pad are electrically connected；
Second pad of upper electrode the covering polymer material layer and upper electrode pad.Upper electrode pad is provided with the first weldering
Disk and the second pad, the second pad are electrically connected with upper electrode, and the first pad with application circuit for connecting, such design energy
Improve the stability of connection.
It is described to electrically connect as being electrically connected by metallic film lead.
The substrate is ceramic substrate.Ceramic substrate has that high temperature resistant, that electrical insulation capability is good, chemical stability is high is excellent
Point.
The lower electrode, lower electrode pad, upper electrode pad and upper electrode material be in gold, platinum, silver, palladium
One kind.
The size of the substrate is 2.4mm × 4.9mm.
Compared with prior art, the utility model has the advantages that：The utility model can ensure humicap
While miniaturized structure, the performance of material is taken full advantage of, ensure that sensitivity, the response speed of Humidity-Sensitive Capacitance Sensor,
Convenient for integrated with the components such as other sensors, resistance, can be applied on high-precision miniaturized circuit.
Description of the drawings
Fig. 1 is humicap part-structure schematic diagram；
Fig. 2 is humicap part-structure schematic diagram；
Fig. 3 is humicap part-structure schematic diagram.
Specific implementation mode
In order to allow those skilled in the art to more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this
Utility model is further elaborated.
Embodiment
As shown in Fig. 1 ~ 3, a kind of surface mount type polymer humicap of high sensitivity, including ceramic substrate 100, the pottery
Ceramic chip 100 is equipped with lower electrode 200, and lower electrode pad 300 and upper electrode weldering are respectively equipped with close to lower electrode 200
Disk, the upper electrode pad include the first pad 410 and the second pad 420, first pad, 410 and second pad 420
It is electrically connected by metallic film lead 401, the lower electrode pad 300 passes through metallic film lead 301 with lower electrode 200
Electrical connection；Macromolecule wet sensory material layer 500, the macromolecule wet sensory material layer 500 are covered on the lower electrode 200 comprehensively
Upper and 420 overlying lid upper electrode 600 of the second pad, the upper electrode 600 is realized by the second pad 420 and upper electrode
Pad is in contact electrical connection.The size of the substrate is 2.4mm × 4.9mm.
Above-described embodiment is only the wherein specific implementation of the utility model, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the utility model patent range therefore be interpreted as.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are apparent
Alternative forms belong to the scope of protection of the utility model.
Claims (6)
1. a kind of surface mount type polymer humicap of high sensitivity, which is characterized in that including substrate, the substrate is equipped with down
Layer electrode, lower electrode pad and upper electrode pad, the lower electrode pad and lower layer are respectively equipped with close to lower electrode
Electrode is electrically connected；Be covered with macromolecule wet sensory material layer on the lower electrode comprehensively, on the macromolecule wet sensory material layer and
Section top electrode pad overlying lid upper electrode, the upper electrode and upper electrode pad are in contact electrical connection.
2. surface mount type polymer humicap according to claim 1, which is characterized in that the upper electrode pad includes
First pad and the second pad, first pad and the electrical connection of the second pad；The upper electrode covers polymer material layer
With the second pad of upper electrode pad.
3. surface mount type polymer humicap according to claim 1 or 2, which is characterized in that described to electrically connect as passing through
Metallic film lead is electrically connected.
4. surface mount type polymer humicap according to claim 1, which is characterized in that the substrate is ceramic substrate.
5. surface mount type polymer humicap according to claim 1, which is characterized in that the lower electrode, lower layer's electricity
The material of pole pad, upper electrode pad and upper electrode is one kind in gold, platinum, silver, palladium.
6. surface mount type polymer humicap according to claim 1 or 2, which is characterized in that the size of the substrate is
2.4mm×4.9mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053723.1U CN207689413U (en) | 2018-01-12 | 2018-01-12 | A kind of surface mount type polymer humicap of high sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053723.1U CN207689413U (en) | 2018-01-12 | 2018-01-12 | A kind of surface mount type polymer humicap of high sensitivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207689413U true CN207689413U (en) | 2018-08-03 |
Family
ID=62991678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820053723.1U Active CN207689413U (en) | 2018-01-12 | 2018-01-12 | A kind of surface mount type polymer humicap of high sensitivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207689413U (en) |
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2018
- 2018-01-12 CN CN201820053723.1U patent/CN207689413U/en active Active
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