Sample sealing device applied to SAT

Abstract

The utility model relates to the technical field of sealing devices, in particular to a sample sealing device applied to SAT. The sample sealing device comprises a box body, a protruding part is arranged on the top face of the box body, an upper cover covers the side wall of the protruding part, a detection opening is formed in the top face of the upper cover in a penetrating mode, and a sample abuts against the interior of the upper cover; and the upper cover is provided with a sealing and fixing piece for sealing and fixing the edge of the sample. The device has the effect of preventing the sample from being damaged during water immersion detection.

Description

Technical Field

[0001] This application relates to the technical field of sealing devices, and in particular to a sample sealing device for use in SAT. Background Technology

[0002] SAT (Scanning Acoustic Tomography) works by using the echo of ultrasound waves to detect the internal structure of materials. It operates by sending high-frequency sound waves emitted from an ultrasonic probe through the material. The sound waves are reflected, refracted, or scattered at the boundaries of different media, and the returned signals are converted into images, thus forming a three-dimensional image of the material's internal structure. SAT scanning is widely used in semiconductor packaging inspection and packaging integrity verification.

[0003] Currently, SAT scans are typically performed in a water bath. The main reason is that the acoustic impedance of water is close to that of the sample, and it can effectively transmit sound waves, thereby improving imaging results. The specific reasons are as follows:

[0004] Sound wave transmission medium: Water is an excellent medium for transmitting sound waves. SAT scans rely on ultrasound to detect internal structures or defects in objects, and water effectively transmits ultrasound waves from the transmitter to the sample and back to the receiver.

[0005] Reducing acoustic wave reflection loss: When sound waves enter another medium from one medium, if the acoustic impedance difference between the two is too large, significant acoustic wave reflection will occur, leading to energy loss. The acoustic impedance of water is relatively close to that of the sample material (such as semiconductors, packaging materials, etc.), which can reduce the loss of sound waves reflected between media, allowing more sound waves to penetrate the sample and improving scanning accuracy.

[0006] Avoiding air bubble interference: Water helps avoid interference from air bubbles or gaps that can reflect or scatter sound waves, affecting image quality. In water, sound waves propagate more evenly, resulting in clearer scans. Therefore, SAT scans are typically performed underwater to maximize the penetration of sound waves and improve image resolution.

[0007] However, some samples to be tested usually include a test surface and a non-test surface. If the non-test surface is immersed in water for a long time, the water will cause unnecessary corrosion and damage to the non-test surface of the sample, reducing the service life of the sample. Utility Model Content

[0008] To prevent damage to samples during water immersion testing, this application provides a sample sealing device for SAT.

[0009] This application provides a sample sealing device for SAT, which adopts the following technical solution:

[0010] A sample sealing device for SAT includes a box body, a protrusion on the top surface of the box body, a top cover on the side wall of the protrusion, a detection port through the top surface of the top cover, a sample abutting against the inside of the top cover, and a sealing fastener for sealing and fixing the edge of the sample.

[0011] By adopting the above technical solution, when a sample needs to be scanned by SAT, the sample is first placed inside the top cover with the detection surface facing the detection port. Then, the sample is fixed by the sealing fastener. Next, the top cover is placed on the protrusion to seal the sample. When the sealing device is immersed in water, the detection surface of the sample is detected through the detection port. The non-detection surface of the sample is sealed and protected by the box body and the top cover, which helps to avoid damage to the non-detection surface when the sample is immersed in water for testing.

[0012] Optionally, the sealing element is a sealant, which is applied to the periphery of the edge of the sample.

[0013] By adopting the above technical solution, the sample is sealed and fixed to the inner top wall of the cover with sealant, which helps to prevent water sample from seeping into the box body through the gap between the cover and the cover, thereby improving the sealing performance of the sealing device.

[0014] Optionally, the inner wall of the top cover is provided with a first waterproof rubber ring, and the top cover is tightly fitted onto the outer wall of the protrusion through the first waterproof rubber ring.

[0015] By adopting the above technical solution, water is prevented from seeping into the box body from between the top cover and the protrusion under the action of the first waterproof rubber ring, which helps to improve the sealing performance of the sealing device.

[0016] Optionally, a second waterproof rubber ring is fitted onto the outer wall of the protrusion, and the second waterproof rubber ring is disposed between the upper cover and the box body.

[0017] By adopting the above technical solution, the second waterproof rubber ring prevents water from seeping into the box body from between the top cover and the box body, thereby improving the sealing performance of the sealing device.

[0018] Optionally, the top edge of the protrusion is chamfered.

[0019] By adopting the above technical solution, the chamfering helps to improve the convenience of the protruding part of the top cover.

[0020] Optionally, the inner top wall of the top cover is provided with four corner seats, and the four corner seats enclose the sample to form an accommodating space.

[0021] By adopting the above technical solution, placing the sample in the accommodating space and limiting the sample with the four corner seats, it is beneficial to improve the convenience of placing the sample in the center.

[0022] Optionally, the top surface of the corner seat is provided with a limiting slider, and the inner top wall of the upper cover is provided with a sliding groove, and the limiting slider is slidably disposed in the sliding groove.

[0023] By adopting the above technical solution, when it is necessary to adjust the size of the accommodating space, the corner seat slides along the slide groove through the limiting slider, thereby adapting to samples of different specifications, which in turn helps to improve the applicability of the sealing device.

[0024] Optionally, the inner wall of the corner bracket is provided with a sealing gasket.

[0025] By adopting the above technical solution, the sealing performance between the sealing gasket and the sample can be improved under the action of the sealing gasket.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] When a sample needs to be scanned using SAT, the sample is first placed inside the top cover with the detection surface facing the detection port. The sample is then secured using the sealing fastener. Next, the top cover is placed on the protruding part to seal the sample. When the sealing device is immersed in water, the detection surface of the sample is detected through the detection port. The non-detection surfaces of the sample are sealed and protected by the box body and the top cover, which helps to prevent damage to the non-detection surfaces when the sample is immersed in water for testing. Attached Figure Description

[0028] Figure 1 This is a cross-sectional front view of the sample sealing device applied to SAT according to this application;

[0029] Figure 2 This is a bottom view of the top cover of this application;

[0030] Figure 3 This is a schematic diagram of the corner bracket structure of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Protrusion; 3. Top cover; 4. Inspection port; 5. Sample; 6. Sealant; 7. First waterproof rubber ring; 8. Second waterproof rubber ring; 9. Chamfer; 10. Corner seat; 11. Limiting slider; 12. Slide groove; 13. Sealing gasket. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0033] Example:

[0034] See Figure 1 A sample sealing device for SAT (Saturates and Assays) includes a housing 1. A protrusion 2 is fixedly connected to the top surface of the housing 1. A top cover 3 is provided on the side wall of the protrusion 2. A detection port 4 extends through the top surface of the top cover 3. A sample 5 is mounted on the inner top wall of the top cover 3, and the detection surface of the sample 5 is detected through the detection port 4. A sealing fastener is also installed on the top cover 3 to seal and fix the sample 5 to the inner top wall of the sample 5.

[0035] Because the acoustic impedance of water is close to that of sample 5 and it can effectively transmit sound waves, thus improving imaging results, SAT scanning is usually performed in a water bath. When SAT scanning of sample 5 needs to be performed in a water bath, sample 5 is first placed inside the upper cover 3 with the detection surface of sample 5 facing the detection port 4. Then, sample 5 is fixed in its current position by the sealing fastener, and then the upper cover 3 is closed onto the protrusion 2. The upper cover 3 and the box body 1 cooperate to complete the sealing of sample 5. When the box body 1 is immersed in the water bath, water is immersed in the detection surface of sample 5 through the detection port 4, which helps to improve the accuracy of solder distribution analysis on the detection surface of sample 5. At the same time, the upper cover 3, the box body 1, and the sealing fastener prevent water from corroding and damaging the non-detection surfaces.

[0036] For details, see Figure 1 The sealing and fixing component is sealant 6. Sealant 6 is applied and bonded to the periphery of the edge of sample 5.

[0037] When it is necessary to fix sample 5, first place sample 5 on the inner top wall of the upper cover 3, with the detection surface of sample 5 facing the detection port 4, and then apply adhesive sealant 6 to the edge of sample 5. After the sealant 6 solidifies, sample 5 is sealed and fixed to the inner top wall of the upper cover 3.

[0038] See Figure 1 To improve the sealing between the top cover 3 and the protrusion 2, a first waterproof rubber ring 7 is fixedly connected to the inner wall of the top cover 3, and the top cover 3 is tightly fitted to the protrusion 2 through the first waterproof rubber ring 7.

[0039] Similarly, in order to improve the sealing between the top cover 3 and the box body 1, a second waterproof rubber ring 8 is fixedly connected to the top surface of the top cover 3. The second waterproof rubber ring 8 is sleeved on the outer wall of the protrusion 2, and when the top cover 3 is closed, the top cover 3 abuts against the top surface of the second waterproof rubber ring 8.

[0040] The first waterproof rubber ring 7 and the second waterproof rubber ring 8 help prevent water from seeping in through the connection gap between the top cover 3 and the box body 1, and the connection gap between the top cover 3 and the protrusion 2, thereby improving the overall sealing performance of the sealing device.

[0041] It is worth mentioning that, see Figure 1To improve the ease with which the top cover 3 closes onto the protrusion 2, the top edge of the protrusion 2 is chamfered 9. The chamfer 9 ensures that the top cover 3 is securely and tightly closed onto the protrusion 2 via the first waterproof rubber ring 7.

[0042] See Figure 2 and Figure 3 The inner top wall of the top cover 3 is equipped with four corner seats 10, which enclose a receiving space that is adapted to the shape of the sample 5.

[0043] The top surface of the corner seat 10 is fixedly connected to the limiting slider 11, and the inner top wall of the upper cover 3 is provided with a sliding groove 12. The sliding groove 12 is inclined along the diagonal position of the upper cover 3, and the limiting slider 11 slides tightly in the sliding groove 12.

[0044] When the size of the accommodating space needs to be adjusted, the four corner seats 10 are moved in sequence in the direction of moving away from or towards each other, so that the sample 5 can be adapted to the size of the accommodating space, and at the same time it is also conducive to the centered installation of the sample 5.

[0045] In addition, to prevent water from seeping into the box body 1 from the connection between the sample 5 and the corner bracket 10, a sealing gasket 13 is fixedly connected to the inner wall of the corner bracket 10. The corner bracket 10 clamps the sample 5 through the sealing gasket 13, thereby improving the sealing performance of the sealing device.

[0046] The working principle of a sample sealing device used in SAT:

[0047] When SAT scanning of sample 5 is required in the water tank, the four corner brackets 10 are first moved sequentially according to the shape and size of sample 5, so that sample 5 is pre-installed in the receiving space, and the detection surface of sample 5 faces the detection port 4. The corner brackets 10 clamp the corners of sample 5 through the sealing gaskets 13. Then, adhesive sealant 6 is applied to the edge of sample 5. After the sealant 6 solidifies, sample 5 is fixed in the receiving space. Next, the upper cover 3 is tightly closed to the protrusion 2 by the first waterproof rubber ring 7 until the upper cover 3 is pressed against the top surface of the second waterproof rubber ring 8. Finally, the sealing device is immersed in the water tank, and water is used to immerse the detection surface of sample 5 through the detection port 4, thus completing the SAT scan.

[0048] In summary, the non-testing surface of sample 5 is sealed and protected by the box body 1, the top cover 3, and the sealing fastener, which helps to prevent damage to the non-testing surface of sample 5 when it is immersed in water for testing.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sample sealing device for SAT, comprising a housing (1), characterized in that: The top surface of the box body (1) is provided with a protrusion (2), and the side wall of the protrusion (2) is covered with an upper cover (3). The top surface of the upper cover (3) is provided with a detection port (4). The sample (5) is abutted inside the upper cover (3). The upper cover (3) is provided with a sealing and fixing member for sealing and fixing the edge of the sample (5).

2. The sample sealing device for SAT according to claim 1, characterized in that: The sealing fastener is a sealant (6), which is applied to the periphery of the edge of the sample (5).

3. A sample sealing device for SAT according to claim 1, characterized in that: The inner wall of the upper cover (3) is provided with a first waterproof rubber ring (7), and the upper cover (3) is tightly fitted onto the outer wall of the protrusion (2) through the first waterproof rubber ring (7).

4. A sample sealing device for SAT according to claim 1, characterized in that: The outer wall of the protrusion (2) is fitted with a second waterproof rubber ring (8), which is located between the top cover (3) and the box body (1).

5. A sample sealing device for SAT according to claim 1, characterized in that: The top edge of the protrusion (2) is provided with a chamfer (9).

6. A sample sealing device for SAT according to claim 1, characterized in that: The inner top wall of the upper cover (3) is provided with four corner seats (10), and the four corner seats (10) enclose the space for accommodating the sample (5).

7. A sample sealing device for SAT according to claim 6, characterized in that: The top surface of the corner seat (10) is provided with a limiting slider (11), and the inner top wall of the upper cover (3) is provided with a sliding groove (12). The limiting slider (11) is tightly slidably disposed in the sliding groove (12).

8. A sample sealing device for SAT according to claim 6, characterized in that: The inner wall of the corner seat (10) is provided with a sealing gasket (13).

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