CN216820209U

CN216820209U - Bonding-free blood analysis assembly

Info

Publication number: CN216820209U
Application number: CN202220327734.0U
Authority: CN
Inventors: 王新军
Original assignee: Hunan Yuemo Advanced Semiconductor Co ltd
Current assignee: Hunan Yuemo Advanced Semiconductor Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-24
Anticipated expiration: 2032-02-18

Abstract

The utility model relates to the technical field of medical detection, and particularly discloses a bonding-free blood analysis assembly. The bonding-free blood analysis assembly is used for detecting a blood sample and comprises a detection main body and a protective cover; the detection main body comprises a detection chip, a substrate piece and a switching PCB which are sequentially connected in a communication manner, the lower plate surface of the substrate piece is fixedly connected with the upper plate surface of the switching PCB through a conductive block, the substrate piece penetrates through a substrate through hole, the detection chip is fixedly connected to the lower plate surface of the substrate piece, and the induction surface of the detection chip is arranged in the substrate through hole; the visor rigid coupling is in the last face of base plate spare, and the response face, base plate spare and the visor that detect the chip have formed the detection chamber, and blood sample can flow through the detection chamber. This exempt from bonding blood analysis subassembly is through the configuration optimization to detecting the main part, under the prerequisite that does not influence detection chip, base plate spare and the normal communication connection of switching PCB, has adjusted the position of laying of each component, has reduced the equipment degree of difficulty, has promoted the yields, has guaranteed the accuracy that detects.

Description

Bonding-free blood analysis assembly

Technical Field

The utility model relates to the technical field of medical detection, in particular to a bonding-free blood analysis assembly.

Background

When the medical staff detects blood, blood routine examination is often performed, tissues such as cells in the blood are counted under a microscope through manual operation, platelets and hemoglobin still need to be detected by other equipment, errors and technical errors of different degrees are easily caused to detected results according to experience and technology of different medical staff, time and labor are consumed by the conventional detection method, the blood detection speed is greatly influenced, the method is not suitable for large-batch blood detection, the working difficulty of the medical staff is greatly increased in the past, and if the detected results are inconsistent with real disease conditions, secondary damage can be caused to the body of a patient. To solve the above problems, a blood analysis module having a structure in which a detection chip is coupled to a PCB (Printed circuit board) is becoming popular among those skilled in the art.

As shown in fig. 1, the blood analysis assembly includes a detection body 100 and a protective cap 200, and the detection body 100 includes a detection chip and a carrier PCB 180. In the prior art, the die substrate 130 of the test die is directly bonded to the upper surface of the carrier PCB180 by the die bonding adhesive 120, and then the connection leads 150 for connecting the test die and the carrier PCB180 are protected by the protection adhesive 160. The sensing surface of the sensing layer 140 of the chip on the detection chip and the protective cover 200 form a detection cavity, a blood sample can flow through the detection cavity, and the detection cavity is communicated with the external environment through the liquid inlet 201 and the liquid outlet 203.

At present, the protective adhesive 160 is usually formed by dripping adhesive, and the blood analysis assembly produced by the method has poor reliability and uneven surface of the protective adhesive 160 around the detection chip. This makes visor 200 need set up on detecting the non-functional region of chip, and when the pressure that visor 200 acted on detecting the chip was too big, reliability risks such as connecting lead 150 broken string, intersection line can be produced, can cause the fragmentation of detecting the chip even, and this production yields that causes blood analysis subassembly is low, causes direct influence to the detection precision, and then leads to the condition emergence that the testing result is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bonding-free blood analysis assembly to solve the problems of difficult assembly and low yield of the bonding-free blood analysis assembly.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a bonding-free blood analysis assembly for detecting a blood sample comprises a detection main body and a protective cover; the detection main body comprises a detection chip, a substrate piece and a switching PCB which are sequentially connected in a communication manner, the lower plate surface of the substrate piece is fixedly connected with the upper plate surface of the switching PCB through a conductive block, a substrate through hole penetrates through the substrate piece, the detection chip is fixedly connected to the lower plate surface of the substrate piece, and the induction surface of the detection chip is arranged in the substrate through hole; the visor rigid coupling in the last face of base plate spare, detect the chip the response face base plate spare with the visor has formed the detection chamber, the blood sample can flow through detect the chamber.

As the preferred technical scheme who exempts from bonding blood analysis subassembly, it includes chip substrate and chip response layer to detect the chip, the chip response layer is located the last face of chip substrate, the response face is located the top surface of chip response layer.

As the preferred technical scheme of exempting from bonding blood analysis subassembly, the last face of chip substrate is equipped with the chip pad, the lower face of substrate piece is equipped with the base plate pad, the chip pad with base plate pad looks rigid coupling, detect the chip with the substrate piece passes through the chip pad with base plate pad communication connection.

As a preferred technical scheme of the bonding-free blood analysis component, the lower plate surface of the chip substrate and the upper plate surface of the adapter PCB are arranged at intervals.

As a preferred technical solution of the bonding-free blood analysis component, the base component and the adapting PCB are connected in communication through the conductive block.

As a preferred technical solution of the bonding-free blood analysis component, the conductive blocks are solder balls.

As a preferred technical scheme of the bonding-free blood analysis component, the solder balls are made of conductive metal.

As a preferred technical scheme of the bonding-free blood analysis assembly, the substrate through hole penetrates through the upper plate surface and the lower plate surface of the substrate.

As a preferred technical scheme of the bonding-free blood analysis component, an output bonding pad is arranged on the switching PCB, and the switching PCB is in communication connection and electric connection with an external circuit through the output bonding pad.

As a preferred technical solution of the bonding-free blood analysis assembly, the detection chamber is communicated with the external environment through a liquid inlet and a liquid outlet.

The utility model has the beneficial effects that:

this exempt from bonding blood analysis subassembly is through the configuration optimization to the detection subject, under the prerequisite that does not influence detection chip, base plate spare and the normal communication connection of switching PCB, has adjusted the position of laying of detection chip, base plate spare and switching PCB, has reduced the space that the detection subject took, has reduced this exempt from bonding blood analysis subassembly in the risk of equipment in-process error, has promoted the yields of production to the accuracy of testing result has been guaranteed. The sensing surface of the detection chip, the substrate part and the protective cover form a detection cavity, so that the structure of the detection cavity is simplified, and the space occupied by the protective cover is effectively reduced on the premise of ensuring that a blood sample flowing through the detection cavity can be smoothly contacted with the sensing surface; the induction surface of the detection chip, the split arrangement of the base plate part and the switching PCB reduces the production difficulty of the PCB part of the bonding-free blood analysis assembly, and is beneficial to the structural improvement of the base plate part, thereby facilitating the establishment of the base plate through hole on the base plate part and the accurate realization of the fixed connection of the detection chip and the base plate part, simplifying the structure of the bonding-free blood analysis assembly by the improvement, reducing the difficulty of the production and the assembly of the bonding-free blood analysis assembly, and improving the integration level and the working reliability of the bonding-free blood analysis assembly.

Drawings

FIG. 1 is a schematic diagram of a prior art blood analysis assembly;

FIG. 2 is a cross-sectional view of a bond-free blood analysis assembly provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a substrate member and a conductive block according to an embodiment of the present invention.

In the figure:

100. detecting a subject; 110. a base member; 111. a substrate through hole; 112. a substrate pad; 120. sticking a piece adhesive; 130. a chip substrate; 131. a chip bonding pad; 140. a chip sensing layer; 150. connecting a lead; 160. protective glue; 170. switching the PCB; 171. an output pad; 180. carrying the PCB; 190. a conductive block;

200. a protective cover; 201. a liquid inlet; 203. and a liquid outlet.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 2 and 3, the present embodiment provides a bonding-free blood analysis assembly for testing a blood sample, comprising a testing body 100 and a protection cap 200; the detection main body 100 comprises a detection chip, a substrate piece 110 and a switching PCB170 which are sequentially connected in a communication manner, the lower plate surface of the substrate piece 110 is fixedly connected with the upper plate surface of the switching PCB170 through a conductive block 190, the substrate piece 110 penetrates through a substrate through hole 111, the detection chip is fixedly connected to the lower plate surface of the substrate piece 110, and the induction surface of the detection chip is arranged in the substrate through hole 111; the protective cover 200 is fixedly connected to the upper plate surface of the substrate 110, the sensing surface of the detection chip, the substrate 110 and the protective cover 200 form a detection cavity, and a blood sample can flow through the detection cavity.

This exempt from bonding blood analysis subassembly is through the configuration optimization to main detection body 100, under the prerequisite that does not influence the detection chip, base plate spare 110 and the normal communication connection of switching PCB170, the position of laying of detection chip, base plate spare 110 and switching PCB170 has been adjusted, the space that main detection body 100 took has been reduced, this exempt from bonding blood analysis subassembly is at the risk of equipment in-process error, the yields of production has been promoted, thereby the accuracy of testing result has been guaranteed. The sensing surface of the detection chip, the substrate piece 110 and the protective cover 200 form a detection cavity, so that the structure of the detection cavity is simplified, and the space occupied by the protective cover 200 is effectively reduced on the premise of ensuring that the blood sample flowing through the detection cavity can be smoothly contacted with the sensing surface; the sensing surface of the detection chip, the split arrangement of the base plate part 110 and the switching PCB170 reduces the production difficulty of the PCB part of the bonding-free blood analysis assembly, and contributes to the structural improvement of the base plate part 110, so that the opening of the base plate through hole 111 on the base plate part 110 and the fixed connection of the detection chip and the base plate part 110 can be realized accurately, the structure of the bonding-free blood analysis assembly is simplified through the improvement, the difficulty of the production and the assembly of the bonding-free blood analysis assembly is reduced, and the integration level and the working reliability of the bonding-free blood analysis assembly are improved.

By designing the base plate 110 and the adapting PCB170 separately, the production difficulty and the manufacturing cost of the PCB portion of the bonding-free blood analysis module can be greatly reduced, which greatly improves the circuit accuracy of the base plate 110. In this embodiment, the thickness of the substrate member 110 is 200 μm.

In this embodiment, the detection chip includes a chip substrate 130 and a chip sensing layer 140, the chip sensing layer 140 is disposed on an upper surface of the chip substrate 130, and the sensing surface is located on a top surface of the chip sensing layer 140. Specifically, the chip sensing layer 140 is partially disposed in the substrate via hole 111. The structure design is simple and compact, the detection chip can successfully complete the actions of sample information induction and information transmission, and the difficulty of communication connection between the detection chip and the substrate piece 110 is effectively reduced.

Preferably, the chip substrate 130 is less than 600 microns thick.

In this embodiment, the substrate through hole 111 penetrates the upper plate surface and the lower plate surface of the substrate 110. The above design effectively simplifies the arrangement of each component on the detection main body 100, reduces the difficulty of blood sample detection, and further reduces the space occupied by the bonding-free blood analysis component.

Specifically, the substrate through hole 111 is opened in the middle of the substrate member 110, the substrate through hole 111 extends in the vertical direction, and a projection size of the substrate through hole 111 in the horizontal plane is larger than a projection size of the chip sensing layer 140 in the horizontal plane and smaller than a projection size of the chip substrate 130 in the horizontal plane.

Preferably, glue is smeared between the upper plate surface of the chip substrate 130 and the lower plate surface of the substrate 110, and the glue is filled in a part where the projection of the chip substrate 130 in the horizontal plane coincides with the projection of the substrate 110 in the horizontal plane, so that the blood sample is ensured not to permeate below the chip substrate 130, and the cleanliness of the working environment of the bonding-free blood analysis assembly is improved.

In this embodiment, a chip pad 131 is disposed on an upper surface of the chip substrate 130, a board pad 112 is disposed on a lower surface of the board 110, the chip pad 131 is fixedly connected to the board pad 112, and the detection chip is in communication connection with the board 110 through the chip pad 131 and the board pad 112. The design of the connection mode improves the connection stability of the detection chip on the substrate part 110, reduces the maintenance frequency of the bonding-free blood analysis component and prolongs the service life of the bonding-free blood analysis component; the design that the detection chip and the substrate piece 110 are in communication connection through the chip bonding pad 131 and the substrate bonding pad 112 simplifies the structure of the detection main body 100, ensures the stability of communication connection between the detection chip and the substrate piece 110, further improves the yield of the production of the bonding-free blood analysis assembly, and ensures the accuracy of the detection result. Specifically, the connection manner of the die pad 131 and the substrate pad 112 is soldering.

Preferably, the lower plate surface of chip substrate 130 is spaced apart from the upper plate surface of relay PCB 170. The interval arrangement of chip substrate 130 and switching PCB170 has reduced chip substrate 130 and has caused the risk of damage to the circuit of switching PCB170 upper surface, has further reduced the equipment degree of difficulty of this bonding-free blood analysis subassembly, has promoted the yields of production.

In this embodiment, the detection chamber is in communication with the external environment via a liquid inlet 201 and a liquid outlet 203. The liquid inlet 201 and the liquid outlet 203 are arranged to facilitate the use of detection personnel, ensure that the blood sample can flow according to a preset track, and improve the efficiency of the blood sample discharging detection cavity for completing the detection.

Preferably, the adaptor PCB170 is provided with a PCB terminal, the lower surface of the substrate 110 is provided with a substrate pad 112, and both ends of the conductive block 190 are soldered to the PCB terminal and the substrate pad 112, respectively. The arrangement of the PCB terminals and the substrate pads 112 ensures the stability of the connection of the conductive bumps 190 on the relay PCB170 and the substrate 110. The structure design effectively optimizes the structure of the bonding-free blood analysis component, reduces the difficulty of accurately connecting the substrate component 110 and the switching PCB170, reduces the space occupied by the bonding-free blood analysis component, and further improves the efficiency of assembling the substrate component 110 on the switching PCB170 by production personnel.

In this embodiment, the substrate member 110 and the relay PCB170 are communicatively connected by conductive bumps 190. The above design further simplifies the structure of the detection main body 100, ensures the stability of communication connection between the substrate member 110 and the adapting PCB170, and further improves the yield of the bonding-free blood analysis assembly.

Preferably, the conductive bumps 190 are solder balls. The solder balls are simple to prepare, high in working stability and good in connection effect, and can effectively achieve the effect of connecting the substrate 110 and the transfer PCB170 in a communication mode while ensuring that the relative positions of the substrate 110 and the transfer PCB170 are not deviated.

Furthermore, the solder balls are made of conductive metal. Specifically, the conductive metal is tin. The tin has the advantages of good fluidity, good conductivity, low melting point, good welding fastness, better affinity with metal and the like after being heated.

In this embodiment, the adaptor PCB170 is provided with an output pad 171, and the adaptor PCB170 is connected to and electrically connected to an external circuit through the output pad 171, and the external circuit can supply power to the bonding-free blood analysis component and perform an operation on data obtained by the detection chip.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bond-free blood analysis assembly for testing a blood sample, comprising:

the detection device comprises a detection main body (100) and a detection chip, a substrate piece (110) and a switching PCB (170), wherein the detection main body, the substrate piece (110) and the switching PCB (170) are sequentially in communication connection, the lower plate surface of the substrate piece (110) is fixedly connected with the upper plate surface of the switching PCB (170) through a conductive block (190), a substrate through hole (111) penetrates through the substrate piece (110), the detection chip is fixedly connected to the lower plate surface of the substrate piece (110), and the induction surface of the detection chip is arranged in the substrate through hole (111);

the protective cover (200) is fixedly connected to the upper plate surface of the substrate piece (110), the sensing surface of the detection chip, the substrate piece (110) and the protective cover (200) form a detection cavity, and the blood sample can flow through the detection cavity.

2. The bonding-free blood analysis assembly according to claim 1, wherein the detection chip comprises a chip substrate (130) and a chip sensing layer (140), the chip sensing layer (140) is disposed on an upper plate surface of the chip substrate (130), and the sensing surface is located on a top surface of the chip sensing layer (140).

3. The bonding-free blood analysis assembly according to claim 2, wherein the upper plate surface of the chip substrate (130) is provided with a chip pad (131), the lower plate surface of the substrate (110) is provided with a substrate pad (112), the chip pad (131) is fixedly connected with the substrate pad (112), and the detection chip is in communication connection with the substrate (110) through the chip pad (131) and the substrate pad (112).

4. The bond-free blood analysis assembly of claim 2, wherein the lower plate surface of the chip substrate (130) is spaced apart from the upper plate surface of the adapter PCB (170).

5. The bond-free blood analysis assembly of claim 1, wherein the base member (110) and the adapter PCB (170) are communicatively connected via the conductive bumps (190).

6. The bonding-free blood analysis assembly of claim 5, wherein the conductive bumps (190) are solder balls.

7. The bonding-free blood analysis assembly of claim 6, wherein the solder balls are made of a conductive metal.

8. The bonding-free blood analysis assembly according to claim 1, wherein the substrate through-hole (111) penetrates through upper and lower plate surfaces of the substrate member (110).

9. The bond-free blood analysis assembly of claim 1, wherein the adapter PCB (170) has output pads (171) thereon, and wherein the adapter PCB (170) is communicatively and electrically connected to an external circuit via the output pads (171).

10. The bonding-free blood analysis assembly of any one of claims 1-9, wherein the detection chamber is in communication with the external environment via a liquid inlet (201) and a liquid outlet (203).