CN210268693U - Sensor packaging structure - Google Patents
Sensor packaging structure Download PDFInfo
- Publication number
- CN210268693U CN210268693U CN201921540808.3U CN201921540808U CN210268693U CN 210268693 U CN210268693 U CN 210268693U CN 201921540808 U CN201921540808 U CN 201921540808U CN 210268693 U CN210268693 U CN 210268693U
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- flow channel
- cavity
- base
- circuit board
- seal
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- 238000004806 packaging method and process Methods 0.000 title abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000011247 coating layer Substances 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000000560 biocompatible material Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 15
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 14
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000003994 anesthetic gas Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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- Measuring Volume Flow (AREA)
Abstract
The utility model provides a sensor packaging structure, which belongs to the technical field of sensors and can at least partially solve the problems that the prior sensor packaging structure is complicated, large in volume, not easy to disassemble and assemble and incapable of measuring special liquid, the sensor packaging structure of the embodiment of the utility model comprises a base, a flow passage, a sensor component and a sealing element, wherein the base is provided with a chip placing position, the flow passage is arranged in the base in a penetrating way and is communicated with the chip placing position, the first end of the flow passage is penetrated to one side of the base, the second end of the flow passage is penetrated to the other side of the base, the sensor component comprises a circuit board and a sensing chip arranged on one side of the circuit board facing the base, the circuit board is connected with the base, the sensing chip is arranged in the chip placing position, the sealing element is clamped between the circuit board and the base, to seal the circuit board and the base.
Description
Technical Field
The utility model belongs to the technical field of the sensor, concretely relates to sensor packaging structure.
Background
In the medical industry, the flow, pressure or bubble detection of liquid medicine, blood, oxygen generation, anesthetic gas and the like are often required to be measured, in order to ensure the measurement accuracy, a sensing chip is immersed in a medium to be measured to be an effective method, the encapsulation of the sensor usually needs to meet the biocompatibility, a fluid channel of the sensor needs to be provided with holes or grooves on a channel wall for placing sensor parts, the holes or the grooves need to be sealed after the sensor is placed, and the structure of the channel is optimized so that the channel does not have residual air to generate bubbles in the process of flowing liquid, which is very important in a medical sensor channel which needs to keep the flow rate of fluid stable and does not have bubbles.
The utility model discloses well sensor packaging structure is complicated, bulky, difficult dismouting and unable special liquid scheduling problem of measurement for packaging structure among the sensor packaging structure in the past, the utility model discloses well sensor packaging structure is simple, has reduced the volume, has simplified the dismouting mode, uses the encapsulating material that has biocompatibility to reach the standard of measuring special liquid, especially the measurement standard of liquid medicine and blood.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a sensor packaging structure.
The utility model provides a sensor packaging structure, include:
the chip placing position is arranged on the base;
the flow channel penetrates through the base and is communicated with the chip placement position, a first end of the flow channel penetrates out of one side of the base, and a second end of the flow channel penetrates out of the other side of the base;
the sensor assembly comprises a circuit board and a sensing chip arranged on one side of the circuit board facing the base, the circuit board is connected with the base, and the sensing chip is placed in the chip placement position;
a sealing member interposed between the circuit board and the base to seal the circuit board and the base.
Further, the flow channel comprises a first flow channel cavity, a second flow channel cavity and a third flow channel cavity communicated with the first flow channel cavity and the second flow channel cavity, and the third flow channel cavity is communicated with the chip placement position; wherein,
at least one of the first and second channel cavities has an axis that is offset from the third channel cavity axis, and the third channel cavity axis is relatively closer to the sense die.
Further, the axes of the first runner cavity and the second runner cavity are offset from the axis of the third runner cavity. Further, the flow passage further comprises a first transition flow passage cavity and a second transition flow passage cavity; wherein,
the first transition runner cavity inclines from the first runner cavity to the third runner cavity and is respectively communicated with the first runner cavity and the third runner cavity;
the second transition runner cavity inclines from the third runner cavity to the second runner cavity and is respectively communicated with the third runner cavity and the second runner cavity.
Furthermore, the cross section of the flow channel is trapezoidal.
Furthermore, one side of the base, which faces the circuit board, is further provided with a sealing limiting part, and the sealing limiting part is used for limiting the position of the sealing element on the base.
Further, the sealing limit part comprises a sealing limit groove or a sealing limit mark.
Further, the sensor chip comprises a coating layer, wherein the coating layer covers the area where the circuit board is connected with the sensing chip, and,
an orthographic projection of the coating layer on the seal falls outside the seal.
Furthermore, the coating layer is made of biocompatible materials such as gold, titanium and medical alloy.
Further, the sealing element is made of sealing glue and/or a sealing ring; wherein,
the sealant is made of a medical curing adhesive material;
the sealing ring is made of medical rubber.
The utility model discloses sensor packaging structure, this compact structure is simple, occupation space is little, and sealing performance is good and easily dismouting, when the runner lets in liquid, the third runner chamber with the position intercommunication is placed to the chip, the transversal trapezoidal of personally submitting of runner guides liquid gently to rise and contacts the chip, avoids runner cavity sudden change to produce the bubble that the vortex leads to the unsteady and dead angle department residual gas that flow to lead to and leads to and produces, through the part that the fluid of runner contacted all satisfies biocompatibility, therefore the sample that awaits measuring can be special liquid such as liquid medicine, blood.
Drawings
Fig. 1 is a schematic structural diagram of a sensor package structure according to a first embodiment of the present invention;
FIG. 2 is an exploded view of the sensor package structure shown in FIG. 1;
FIG. 3 is a cross-sectional view of the sensor package structure shown in FIG. 1;
fig. 4 is a schematic structural diagram of a base and a flow channel of a sensor package structure according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a sensor assembly of a sensor package structure according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, the present invention relates to a sensor package structure 100, which includes a base 110, a flow channel 120, a sensor assembly 130, and a sealing member 140. The base 110 is provided with a chip placement site 111. The flow channel 120 is disposed in the base 110 and is communicated with the chip placement site 111, a first end of the flow channel 120 penetrates through one side of the base 110, and a second end of the flow channel 120 penetrates through the other side of the base 110. The sensor assembly 130 includes a circuit board 131 and a sensing chip 132 disposed on a side of the circuit board 131 facing the base 110, the circuit board 131 is connected to the base 110, and the sensing chip 132 is disposed in the chip placement position 111. The sealing member 140 is interposed between the circuit board 131 and the base 110 to seal the circuit board 131 and the base 110.
Specifically, in actual use, as shown in fig. 1 and 3, the fluid medium is transited to contact the sensor chip 132 through the flow channel 120, and the fluid medium is tested by the sensor chip 132 to collect the required data. A sealing member 140 is disposed between the circuit board 131 and the base 110, and functions to prevent the fluid medium in the flow channel 120 from overflowing and eroding the circuit board 131, and simultaneously isolate the external environment from affecting the fluid medium.
The utility model discloses a sensor packaging structure 100, its compact structure is simple, occupation space is little, has strengthened the leakproofness of this structure through sealing member 140, simplifies the dismouting procedure, and reduction in production cost is low, easily batch production. As shown in fig. 1 and 3, the flow channel 120 includes a first flow channel cavity 121, a second flow channel cavity 122, and a third flow channel cavity 123 communicating the first flow channel cavity 1211 and the second flow channel cavity 122, and the third flow channel cavity 123 is communicated with the chip placement site 111; wherein the axes of the first flow channel chamber 121 and the second flow channel chamber 122 are offset from the axis of the third flow channel chamber 123, and the axis of the third flow channel chamber 123 is relatively closer to the sensor chip 132.
Specifically, when the fluid medium enters the base 110 through the flow channel 120, the fluid medium flows into the third flow channel chamber 123 via the first flow channel chamber 121, and flows out via the second flow channel chamber 122, and during the flow of the fluid medium, which is in contact with a sensing chip 132, the sensing chip 132 can measure data, e.g., pressure or flow rate, in this example, to mitigate the flow of fluid medium through the region of the sensor chip 132, such that the axes of the first and second flow channel cavities 121, 122 are both remote from the sensor chip 132, and the axis of the third flow channel chamber 123 is close to the sensing chip 132, so that the fluid medium can smoothly transition to contact with the sensing chip 132 via the first flow channel chamber 121 and the third flow channel chamber 123, therefore, the unstable flow rate caused by the shape mutation can be reduced, and the first flow channel cavity 121 should be long enough to ensure the stability of the introduction speed of the fluid meson in the first flow channel cavity 121.
It should be noted that, only the axis of the first flow channel chamber 121 may be deviated from the axis of the third flow channel chamber 122, or only the axis of the second flow channel chamber 122 may be deviated from the axis of the third flow channel chamber 123, which may be determined according to actual requirements.
To simplify the flow channel structure, as shown in fig. 3, the axis of the first flow channel chamber 121 and the axis of the second flow channel chamber 122 may be collinear, which may facilitate machining of the flow channel 120.
As shown in FIG. 3, the flow passage 120 further includes a first transition passage cavity 124 and a second transition passage cavity 125; the first transition runner cavity 124 is inclined from the first runner cavity 121 to the third runner cavity 123, and is respectively communicated with the first runner cavity 121 and the third runner cavity 123. The second transition runner cavity 125 is inclined 122 from the third runner cavity 123 to the second runner cavity, and communicates with the third runner cavity 123 and the second runner cavity 122, respectively.
In this embodiment, by using the first transition flow channel cavity 124 and the second transition flow channel cavity 125 which are obliquely arranged, a smooth transition of the fluid medium to contact with the sensing chip 132 can be realized, so that the unstable flow rate caused by the shape jump can be reduced. It should be noted that, no limitation is made on the specific shape of the flow channel 120, for example, as shown in fig. 3, the cross section of the flow channel 120 may be trapezoidal, and besides, those skilled in the art may design other flow channel 120 structures with some cross-sectional shapes according to actual needs.
It should be further noted that, no limitation is made on the specific material of the housing of the flow channel 120, and the housing material of the flow channel 120 is preferably selected from biocompatible materials, for example, the housing material of the flow channel 120 may be a biocompatible material such as PVC, PE, PP, PS, TPU, PEEK, PA, PC, PTFE, and the like.
As shown in fig. 2 and 4, a seal stopper 150 is further disposed on a side of the base 110 facing the circuit board, and the seal stopper 150 is used for limiting a position of the seal member 140 on the base 110.
It should be noted that, no specific limitation is made on the specific structure of the seal limiting member 150, for example, as shown in fig. 4, the seal limiting member 150 may be in the form of a seal limiting groove, and of course, besides, the seal limiting member 150 may also adopt other structures, for example, a seal limiting mark, etc., the specific structure of the seal limiting member 150 should be set according to the seal member, for example, when the material of the seal member 140 is a solid, the seal limiting member 150 may adopt the form of a seal limiting mark to realize the limiting, and conversely, when the seal member 140 adopts a liquid, the seal limiting member 150 may not be used. In the present invention, other forms can be selected by those skilled in the art according to actual needs.
As shown in fig. 3 and 5, the sensor package structure 100 further includes a coating layer 160, the coating layer 160 covers a region where the circuit board 131 is connected to the sensor chip 132, and an orthographic projection of the coating layer 160 on the sealing member 140 falls outside the sealing member 140.
Specifically, as shown in fig. 3 and 5, the coating layer 160 is located between the circuit board 131 and the sensing chip 132, the electrical connection between the sensing chip 132 and the circuit board 131 should be coated with a biocompatible insulating adhesive to prevent the electrical connection between the circuit board 131 and the sensing chip 132 from being corroded by liquid, and the position range of the sealing member 140 should be completely within the position range of the coating layer 160 to ensure that gas or liquid does not contact the circuit board 131.
It should be noted that, no limitation is made on the specific material of the coating layer 160, and preferably, the material of the coating layer 160 is a biocompatible material, for example, the material of the coating layer 160 may be a biocompatible material such as gold, titanium, medical alloy, and the like.
It should be further noted that, the material of the sealing element 140 is not particularly limited, and preferably, the sealing element 140 is also made of a biocompatible material, for example, the material of the sealing element 140 may be a light-cured adhesive, a flexible polymer, or the like; the shape of the sealing member 140 is not particularly limited, for example, as shown in fig. 2, the shape of the sealing member 140 may be rectangular, but of course, the sealing member 140 may also take other shapes; the shape of the cross section of the sealing member 140 is not particularly limited, and for example, as shown in fig. 3, the cross section of the sealing member 140 may be circular, but the cross section of the sealing member 140 may have other shapes.
The sensor package structure 100 of the present embodiment uses the biocompatible material to form the coating layer 160 and the sealing member 140, so as to expand the range of the sample to be tested, and meet the requirement standards of special liquids such as testing liquid medicine and blood.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A sensor package structure, comprising:
the chip placing position is arranged on the base;
the flow channel penetrates through the base and is communicated with the chip placement position, a first end of the flow channel penetrates out of one side of the base, and a second end of the flow channel penetrates out of the other side of the base;
the sensor assembly comprises a circuit board and a sensing chip arranged on one side of the circuit board facing the base, the circuit board is connected with the base, and the sensing chip is placed in the chip placement position;
a sealing member interposed between the circuit board and the base to seal the circuit board and the base.
2. The sensor package structure of claim 1, wherein the flow channel comprises a first flow channel cavity, a second flow channel cavity, and a third flow channel cavity communicating the first flow channel cavity and the second flow channel cavity, the third flow channel cavity communicating with the chip placement site; wherein,
at least one of the first and second channel cavities has an axis that is offset from the third channel cavity axis, and the third channel cavity axis is relatively closer to the sense die.
3. The sensor package structure of claim 2, wherein the axes of the first and second flow channel cavities are offset from the axis of the third flow channel cavity.
4. The sensor package structure of claim 3, wherein the flow channel further comprises a first transition flow channel cavity and a second transition flow channel cavity; wherein,
the first transition runner cavity inclines from the first runner cavity to the third runner cavity and is respectively communicated with the first runner cavity and the third runner cavity;
the second transition runner cavity inclines from the third runner cavity to the second runner cavity and is respectively communicated with the third runner cavity and the second runner cavity.
5. The sensor package of claim 3, wherein the flow channel has a trapezoidal cross-section.
6. The sensor package structure according to any one of claims 1 to 5, wherein a side of the base facing the circuit board is further provided with a seal stopper for limiting a position of the seal member on the base.
7. The sensor package structure of claim 6, wherein the seal retainer comprises a seal retainer groove or a seal retainer mark.
8. The sensor package structure of any one of claims 1 to 5, further comprising a coating layer covering an area where the circuit board is connected to the sensor chip, and,
an orthographic projection of the coating layer on the seal falls outside the seal.
9. The sensor package structure of claim 8, wherein the coating layer is made of a biocompatible material such as gold, titanium, or medical alloy.
10. The sensor package structure of claim 8, wherein the seal is made of a sealant and/or a gasket; wherein,
the sealant is made of a medical curing adhesive material;
the sealing ring is made of medical rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540808.3U CN210268693U (en) | 2019-09-17 | 2019-09-17 | Sensor packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540808.3U CN210268693U (en) | 2019-09-17 | 2019-09-17 | Sensor packaging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210268693U true CN210268693U (en) | 2020-04-07 |
Family
ID=70019183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921540808.3U Active CN210268693U (en) | 2019-09-17 | 2019-09-17 | Sensor packaging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210268693U (en) |
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2019
- 2019-09-17 CN CN201921540808.3U patent/CN210268693U/en active Active
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