Packaging structure of water quality sensitive chip

Abstract

The utility model discloses a packaging structure of a water quality sensitive chip, the water quality sensitive chip comprises a sensitive structure, the packaging structure comprises a packaging shell, an isolation layer and an electric connection structure, the packaging shell is provided with a water body channel, and the water quality sensitive chip, the isolation layer and the electric connection structure are all arranged in the packaging shell. And the isolation layer is positioned between the water quality sensitive chip and the electric connection structure. According to the packaging structure, the water quality sensitive chip can be packaged in the packaging shell, the water quality sensitive chip can be supported and protected, the water quality sensitive chip is prevented from being damaged by the outside world, and contact between the outside water body and the sensitive structure can be achieved through the water body channel; meanwhile, isolation between the internal structure and external water can be achieved through the isolation layer, and the external water is prevented from making contact with an electric signal access. The packaging structure is high in practicability, capable of achieving supporting protection, water sealing, electric connection and water pressure resistance of the water quality sensitive chip at the same time, and beneficial to application and popularization of the water quality sensitive chip in the field of water quality monitoring.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically to a packaging structure for a water quality sensitive chip. Background Technology

[0002] The sensitive element of a water quality sensor can be fabricated using MEMS technology and semiconductor processes; this is known as a water quality sensor chip. The water quality sensor chip contains a sensitive structure that converts the water quality signal into an electrical signal through chemical or physical reactions. Because the sensitive structure of the water quality sensor chip needs to be in contact with the water body being measured, existing water quality sensor chips are generally exposed structures. This not only makes them inconvenient for use in conjunction with other devices, but the chip structure itself is also easily damaged, and the electrical signal path is easily affected, making it difficult to achieve long-term stable application in actual water quality monitoring. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a packaging structure for a water quality sensitive chip, which can simultaneously achieve support and protection, water sealing, electrical connection and water pressure resistance for the water quality sensitive chip, which is conducive to the promotion and application of water quality sensitive chips in the field of water quality monitoring.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: The water quality sensitive chip includes a sensitive structure, and the packaging structure includes a packaging shell, an isolation layer, and an electrical connection structure. The packaging shell has a water channel. The water quality sensitive chip, the isolation layer, and the electrical connection structure are all disposed inside the packaging shell, and the isolation layer is located between the water quality sensitive chip and the electrical connection structure to isolate the external water body from the internal structure. The sensitive structure can be electrically connected to the electrical connection structure, and the sensitive structure can also contact the external water body through the water channel and transmit electrical signals to the internal environment through the electrical connection structure.

[0005] Compared to existing technologies, the advantages of this invention are as follows: This packaging structure can encapsulate the water quality sensitive chip within a housing, providing support and protection to prevent external damage. It also allows contact between the external water and the sensitive structure via a water channel, while an isolation layer isolates the internal structures, such as the electrical connection structure, from the external water, preventing contact with the electrical signal path and thus ensuring signal transmission. This packaging structure is simple, highly practical, and simultaneously provides support and protection for the water quality sensitive chip, water sealing, electrical connection, and water pressure resistance. It can be used stably for long-term water measurement, facilitating the widespread application of water quality sensitive chips in water quality monitoring.

[0006] The above-mentioned water quality sensitive chip packaging structure includes a sensitive electrode and a connecting electrode. The sensitive electrode and the connecting electrode are electrically connected. The connecting electrode can be electrically connected to the electrical connection structure. The sensitive electrode is used to sense the external water body and transmit electrical signals to the inner world through the connecting electrode and the electrical connection structure.

[0007] In the above-mentioned packaging structure of the water quality sensitive chip, the electrical connection structure is electrically connected to the inner side of the isolation layer, the connection electrode is electrically connected to the outer side of the isolation layer, and the inner side of the isolation layer is electrically connected to the outer side, wherein the inner side of the isolation layer is the side away from the water channel.

[0008] In the above-mentioned packaging structure of the water quality sensitive chip, the inner and outer sides of the isolation layer are electrically connected through the isolation layer electrical structure. The electrical connection structure is welded and fixed to the inner side of the isolation layer electrical structure, and the connection electrode is welded and fixed to the outer side of the isolation layer electrical structure.

[0009] In the above-mentioned packaging structure of the water quality sensitive chip, the welding and fixing points between the connecting electrode and the electrical structure of the isolation layer are covered with waterproof adhesive, but the waterproof adhesive does not cover the sensitive electrode.

[0010] The above-mentioned packaging structure of the water quality sensitive chip includes a mounting shell and a protective cover. The protective cover is connected to the first end of the mounting shell. The water quality sensitive chip is installed inside the mounting shell, and the sensitive structure is closer to the first end of the mounting shell than the electrical connection structure. The water channel is opened in the protective cover.

[0011] The above-mentioned packaging structure of the water quality sensitive chip includes a first mounting cavity and a second mounting cavity arranged in a stepped manner inside the mounting shell. The isolation layer is installed at the step between the first mounting cavity and the second mounting cavity. The electrical connection structure is located in the first mounting cavity, the water quality sensitive chip is located in the second mounting cavity, and the second mounting cavity is connected to the water channel.

[0012] In the aforementioned packaging structure of the water quality sensitive chip, the water channel and the connection port to the external water body are located on the side of the protective cover.

[0013] In the above-mentioned packaging structure of the water quality sensitive chip, the width of the middle part of the water channel is greater than the width of the connecting port.

[0014] In the above-mentioned packaging structure of the water quality sensitive chip, the end of the packaging shell away from the water channel is filled with sealant, and the sealant covers the isolation layer or covers the isolation layer and part of the electrical connection structure.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the packaging structure according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 The cross-sectional view of the encapsulation structure shown.

[0018] Explanation of reference numerals: 100 Water quality sensitive chip, 110 Sensitive structure, 200 Package shell, 210 Mounting shell, 211 First mounting cavity, 212 Second mounting cavity, 213 Step, 220 Protective cover, 221 Water channel, 222 Connecting port, 300 Isolation layer, 310 Isolation layer electrical structure, 400 Waterproof adhesive, 500 Sealant, 600 Electrical connection structure. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below, with reference to Figure 1 and Figure 2 This utility model provides a packaging structure for a water quality sensitive chip. The water quality sensitive chip 100 includes a sensitive structure 110. The packaging structure includes a packaging shell 200, an isolation layer 300, and an electrical connection structure 600. The packaging shell 200 has a water channel 221. The water quality sensitive chip 100, the isolation layer 300, and the electrical connection structure 600 are all disposed inside the packaging shell 200. The isolation layer 300 is located between the water quality sensitive chip 100 and the electrical connection structure 600 to isolate the external water body from the internal structure. The sensitive structure 110 can be electrically connected to the electrical connection structure 600. The sensitive structure 110 can also contact the external water body through the water channel 221 and transmit electrical signals to the internal environment through the electrical connection structure 600.

[0020] This packaging structure encapsulates the water quality sensor chip 100 within the packaging shell 200. It provides support and protection for the water quality sensor chip 100, preventing external damage, while also allowing contact between external water and the sensing structure 110 via the water channel 221. Simultaneously, the isolation layer 300 isolates the electrical connection structure 600 from the external water, preventing external water from interfering with signal transmission. This packaging structure is simple, highly practical, and simultaneously provides support and protection for the water quality sensor chip 100, water sealing, electrical connection, and water pressure resistance. It can be used stably for long-term water measurement, facilitating the widespread application of water quality sensors in water quality monitoring.

[0021] Furthermore, the sensitive structure 110 includes a sensitive electrode and a connecting electrode. The sensitive electrode is used to contact the external water body and sense the external water quality parameters. The sensitive electrode is electrically connected to the connecting electrode, which is the signal transmission structure of the water quality sensitive chip 100 and is electrically connected to the electrical connection structure 600 so as to transmit the electrical signal to the inner world through the connecting electrode and the electrical connection structure 600.

[0022] Furthermore, referring to Figure 2 The electrical connection structure 600 is electrically connected to the inner side of the isolation layer 300, and the connecting electrode is electrically connected to the outer side of the isolation layer 300. The inner and outer sides of the isolation layer 300 are electrically connected, thereby enabling the electrical signal of the sensitive structure 110 to be transmitted to the inner boundary through the connecting electrode and the electrical connection structure 600. The inner side of the isolation layer 300 is the side away from the water channel 221, while the outer side is the side closer to the water channel 221, i.e., the side closer to the external water body. Furthermore, the inner and outer sides of the isolation layer 300 are electrically connected through an isolation layer electrical structure 310, which is embedded inside the isolation layer 300. The electrical connection structure 600 is welded and fixed to the inner side of the isolation layer electrical structure 310, and the connecting electrode is welded and fixed to the outer side of the isolation layer electrical structure 310. Waterproof adhesive 400 covers the outer side of the connecting electrode, the insulating layer electrical structure 310, and the welding and fixing points between the connecting electrode and the insulating layer electrical structure 310. The waterproof adhesive 400 does not cover the sensitive electrode to prevent external water from contacting the electrical signal path. The end of the insulating layer 300 furthest from the water channel 221 is filled with sealant 500, which covers the insulating layer 300 from the inside or covers the insulating layer 300 and part of the electrical connection structure 600. During encapsulation, the water quality sensitive chip 100 and the insulating layer 300 are fixed inside the encapsulation shell 200. The sealant 500 covers the insulating layer 300 from the inside, and may also cover part of the electrical connection structure 600, thereby achieving fixation between the insulating layer 300 and the encapsulation shell 200, while providing sufficient water pressure resistance for the entire encapsulation structure. Further, as... Figure 2 As shown, sealant 500 is filled into the inner end of the first mounting cavity 211 to cover the electrical connection structure 600 and the isolation layer 300.

[0023] Furthermore, the overall shape of the enclosure 200 can be square, cylindrical, or other shapes. The enclosure 200 can be a one-piece structure or a separate structure. For example... Figure 1 , Figure 2In the encapsulation housing 200, there are a mounting shell 210 and a protective cover 220. The protective cover 220 is connected to the first end of the mounting shell 210. A water channel 221 is formed in the protective cover 220. The water quality sensitive chip 100 is installed inside the mounting shell 210. The sensitive structure 110 is closer to the first end of the mounting shell 210 than the electrical connection structure 600, that is, closer to the protective cover 220 and the water channel 221, so that the sensitive electrode can contact the external water through the water channel 221. During encapsulation, the water quality sensitive chip 100 can be installed into the mounting shell 210 first, and then the protective cover 220 can be fixedly connected to the first end of the mounting shell 210, so that the space where the sensitive electrode is located can communicate with the water channel 221, or the sensitive electrode can be directly exposed in the water channel 221, so that the external water can contact the sensitive electrode through the water channel 221. The protective cover 220 can be fixed to the first end of the mounting shell 210 by welding, threaded connection or snap-fit ​​connection.

[0024] Furthermore, referring to Figure 2 The mounting housing 210 has a first mounting cavity 211 and a second mounting cavity 212 arranged in a stepped manner. An isolation layer 300 is installed at the step 213 between the first mounting cavity 211 and the second mounting cavity 212. An electrical connection structure 600 is located within the first mounting cavity 211, and the water quality sensitive chip 100 is located within the second mounting cavity 212, which is connected to the water channel 221. Furthermore, the sensitive electrode does not extend outside the second mounting cavity 212. Before the protective cover 220 is installed, the entire sensitive electrode is located within the second mounting cavity 212 and can be protected by the mounting housing 210 to prevent collision damage. After the protective cover 220 is installed, it further protects the water quality sensitive chip 100. The second mounting cavity 212 is connected to the water channel 221, allowing external water to contact the sensitive electrode through the water channel 221.

[0025] Furthermore, the connection port 222 between the water channel 221 and the external water body is located on the side of the protective cover 220, so that the side directly opposite the sensitive structure 110 can be directly protected by the protective cover 220. During measurement, the water body enters through the connection port 222 on the side of the protective cover 220 and comes into contact with the sensitive electrode. Multiple connection ports 222 of the water channel 221 can be distributed along the outer periphery of the protective cover 220, and the width of the middle part of the water channel 221 is greater than the width of the connection port 222, which allows the sensitive structure 110 to be in a relatively safe internal space, better preventing damage to the sensitive structure 110. Furthermore, auxiliary water quality measurement structures, such as filters or specific selective membranes, can be added to the water channel 221 to improve the measurement accuracy of the water quality sensitive chip.

[0026] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A packaging structure for a water quality sensitive chip, the water quality sensitive chip (100) comprising a sensitive structure (110), characterized in that, The encapsulation structure includes an encapsulation shell (200), an isolation layer (300), and an electrical connection structure (600). The encapsulation shell (200) has a water channel (221). The water quality sensitive chip (100), the isolation layer (300), and the electrical connection structure (600) are all located inside the encapsulation shell (200). The isolation layer (300) is located between the water quality sensitive chip (100) and the electrical connection structure (600) to isolate the external water body from the internal structure. The sensitive structure (110) can be electrically connected to the electrical connection structure (600). The sensitive structure (110) can also contact the external water body through the water channel (221) and transmit electrical signals to the internal environment through the electrical connection structure (600).

2. The packaging structure of the water quality sensitive chip according to claim 1, characterized in that, The sensitive structure (110) includes a sensitive electrode and a connecting electrode, which are electrically connected. The connecting electrode is electrically connected to the electrical connection structure (600). The sensitive electrode is used to sense the external water body and transmits electrical signals to the inner world through the connecting electrode and the electrical connection structure (600).

3. The packaging structure of the water quality sensitive chip according to claim 2, characterized in that, The electrical connection structure (600) is electrically connected to the inner side of the isolation layer (300), the connection electrode is electrically connected to the outer side of the isolation layer (300), and the inner side of the isolation layer (300) is electrically connected to the outer side, wherein the inner side of the isolation layer (300) is the side away from the water channel (221).

4. The packaging structure of the water quality sensitive chip according to claim 3, characterized in that, The inner and outer sides of the isolation layer (300) are electrically connected by an isolation layer electrical structure (310). The electrical connection structure (600) is welded and fixed to the inner side of the isolation layer electrical structure (310), and the connection electrode is welded and fixed to the outer side of the isolation layer electrical structure (310).

5. The packaging structure of the water quality sensitive chip according to claim 4, characterized in that, The connecting electrode, the outer side of the insulating layer electrical structure (310), and the welding and fixing points of the connecting electrode and the insulating layer electrical structure (310) are all covered with waterproof adhesive (400), and the waterproof adhesive (400) does not cover the sensitive electrode.

6. The packaging structure of the water quality sensitive chip according to claim 1, characterized in that, The encapsulation housing (200) includes a mounting housing (210) and a protective cover (220). The protective cover (220) is connected to the first end of the mounting housing (210). The water quality sensitive chip (100) is installed inside the mounting housing (210), and the sensitive structure (110) is closer to the first end of the mounting housing (210) than the electrical connection structure (600). The water channel (221) is opened in the protective cover (220).

7. The packaging structure of the water quality sensitive chip according to claim 6, characterized in that, The mounting housing (210) has a first mounting cavity (211) and a second mounting cavity (212) arranged in a stepped manner. The isolation layer (300) is installed at the step (213) between the first mounting cavity (211) and the second mounting cavity (212). The electrical connection structure (600) is located in the first mounting cavity (211). The water quality sensitive chip (100) is located in the second mounting cavity (212), and the second mounting cavity (212) is connected to the water channel (221).

8. The packaging structure of the water quality sensitive chip according to claim 6, characterized in that, The water channel (221) and the connection port (222) with the external water body are located on the side of the protective cover (220).

9. The packaging structure of the water quality sensitive chip according to claim 8, characterized in that, The width of the middle part of the water channel (221) is greater than the width of the connecting port (222).

10. The packaging structure of the water quality sensitive chip according to claim 1, characterized in that, The end of the encapsulation shell (200) away from the water channel (221) is filled with sealant (500), which covers the isolation layer (300) or the isolation layer (300) and part of the electrical connection structure (600).

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