AMB auxiliary back-patting device for sintered sic power module

Abstract

The utility model discloses a kind of AMB auxiliary back patting devices after SIC power module sintering, it is related to power module packaging technical field, including bottom plate, substrate moving assembly and camera installation component, the bottom of the bottom plate is fixedly connected with aluminium profile frame, the substrate moving assembly includes movable plate, the bottom of the movable plate is movably connected with bottom plate by first sliding mechanism. The utility model is through substrate moving assembly, utilize movable plate longitudinal movement on first sliding mechanism and the transverse movement of mounting frame on second sliding mechanism, realize the mounting frame of bearing AMB tray in plane flexible adjustment position, so that AMB substrate can be accurately positioned to the above of shooting camera without manual overturning or taking out, effectively solve the problem that AMB back is difficult to check and manual inversion is easy to contaminate substrate front, simultaneously double slide rail design is convenient for quickly moving different substrate inside AMB tray to shooting area, improve the inspection coverage and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power module packaging technology, and in particular to an AMB auxiliary back-mounting device after sintering a SiC power module. Background Technology

[0002] With the continuous advancement of the semiconductor industry, the AMB substrate used in SiC power module packaging mainly consists of a ceramic matrix and a metal layer. The ceramic matrix typically has a high Mohs hardness, which makes it perform well in many applications. However, high hardness also brings some potential problems. Experimental data shows that when SiC ceramic plates are subjected to mechanical stress exceeding their withstand limit, cracks will rapidly propagate and lead to material cracking. This phenomenon is particularly evident under impact loads or rapid temperature changes. In the field of semiconductor packaging, silver sintering technology is gradually becoming a key process for high-power electronic devices. During silver sintering, the AMB substrate is subjected to both high temperature and high pressure, which makes the ceramic matrix in the AMB substrate prone to cracking.

[0003] Traditional ceramic matrix crack inspection requires manual removal of the AMB from the AMB tray and examination under a microscope. Manual inspection still has many problems: it cannot effectively preserve images, fails to provide product traceability, the back of the AMB is difficult to inspect, requiring manual inversion, the chip on the front of the AMB is easily contaminated, posing a high quality risk, and prolonged manual visual inspection can lead to mental fatigue, increasing the product's quality risk.

[0004] To address these issues, we provide an AMB auxiliary back-mounting device after the SiC power module is sintered. Utility Model Content

[0005] To address the issue that the ceramic matrix in the AMB substrate is prone to cracking after silver sintering, requiring manual inspection, this invention provides an auxiliary back-image device for AMB after sintering of SiC power modules. This device solves the problems of lack of product traceability in existing AMB substrate inspection, difficulty in inspecting the back of the AMB, and the tendency for missed or incorrect inspections during manual inspection.

[0006] To solve the above problems, the technical solution adopted by this utility model is an AMB-assisted back-shooting device after sintering a SiC power module, including a base plate, a substrate moving assembly, and a camera mounting assembly. An aluminum profile frame is fixedly connected to the bottom of the base plate. The substrate moving assembly includes a movable plate, the bottom of which is movably connected to the base plate via a first sliding mechanism. A mounting frame is movably connected to the top of the movable plate via a second sliding mechanism. Blocks are fixedly connected to both the front and rear sides of the top of the mounting frame. An AMB tray is disposed on the top of the mounting frame between the four blocks. The camera mounting assembly includes a connecting plate, the top of which is fixedly connected to the base plate. A light source module is fixedly connected to the front side of the connecting plate, and a shooting camera is fixedly connected to the top of the front side of the connecting plate.

[0007] Preferably, the aluminum profile frame includes two short longitudinal aluminum profiles and two long transverse aluminum profiles, which are fixedly connected by aluminum profile connectors to form a square frame. In this preferred embodiment, the square frame composed of the two short longitudinal aluminum profiles and the two long transverse aluminum profiles can provide auxiliary support to the base plate and increase the counterweight, thereby improving the stability of the entire auxiliary back-tapping device.

[0008] Preferably, the first sliding mechanism includes two longitudinal slide rails. The bottom of the longitudinal slide rails is fixedly connected to the base plate, and a longitudinal slider is slidably connected to the surface of the longitudinal slide rails. The top of the longitudinal slider is fixedly connected to the movable plate. In this preferred embodiment, the longitudinal slide rails and the longitudinal slider enable the movable plate to slide back and forth on the top of the base plate, facilitating the adjustment of the installation frame's position.

[0009] Preferably, the second sliding mechanism includes two transverse slide rails, with transverse sliders slidably connected to the surfaces of the transverse slide rails, and the tops of the transverse sliders fixedly connected to the mounting frame. In this preferred embodiment, the transverse slide rails and transverse sliders can adjust the lateral position of the mounting frame and the AMB tray, facilitating the alignment of the substrate placed on the AMB tray with the lens of the camera.

[0010] Preferably, both the base plate and the movable plate have shooting openings at their tops, and handles are fixedly connected to both sides of the mounting frame. In this preferred embodiment, the shooting openings facilitate the camera's shooting operation on the back of the substrate, and the handles facilitate the operator to pull the mounting frame and adjust the shooting position of the substrate.

[0011] Preferably, limit baffles are provided on both the front and rear sides of the first sliding mechanism, and the bottom of the limit baffles is fixedly connected to the base plate. In this preferred embodiment, the limit baffles can limit the longitudinal slider and prevent it from detaching from the surface of the longitudinal slide rail.

[0012] Preferably, the rear side of the light source module is fixedly connected to the connecting plate via a light source mounting plate, and ear plates are fixedly connected to both sides of the bottom of the light source mounting plate. In this preferred embodiment, the light source mounting plate can stably install the light source module, and the ear plates are used to improve the stability of the light source module during operation and prevent it from shaking.

[0013] Preferably, the bottom front side of the connecting plate is fixedly connected to the shooting camera via a camera mounting frame, and both sides of the rear side of the connecting plate are provided with adjustment grooves that cooperate with the camera mounting frame. In this preferred embodiment, the camera mounting frame can cooperate with the adjustment grooves to adjust the shooting camera's height, thereby improving its shooting effect.

[0014] Preferably, the bottom of the base plate has screw holes for use with the aluminum profile frame, and the top of the connecting plate is fixedly connected to the base plate by bolts. In this preferred embodiment, the screw holes facilitate the installation and connection of the base plate and the aluminum profile frame, and the bolt-mounted connecting plate facilitates its disassembly and maintenance.

[0015] Preferably, the bottom of the light source mounting plate has an annular through hole, and the ear plate is triangular in shape, with its rear side fixedly connected to the connecting plate. In this preferred embodiment, the triangular ear plate can improve the stability of the light source mounting plate support and prevent the light source module from shaking during shooting, thus affecting the shooting effect.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model utilizes a substrate moving assembly to achieve flexible adjustment of the mounting frame carrying the AMB tray within a plane by using the longitudinal movement of the movable plate on the first sliding mechanism and the lateral movement of the mounting frame on the second sliding mechanism. This allows the AMB substrate to be precisely positioned above the camera without manual flipping or removal, effectively solving the problems of the back of the AMB being difficult to inspect and the front of the substrate being easily contaminated by manual inversion. At the same time, the dual sliding rail design facilitates the rapid movement of different substrates inside the AMB tray to the shooting area, improving inspection coverage and efficiency.

[0018] 2. This utility model uses a camera mounting assembly and a light source module to provide uniform illumination to the bottom of the substrate placed in the AMB tray. With the adjustable camera, it can clearly image the back of the substrate through the shooting openings of the base plate and the movable plate and automatically save the image. This replaces manual visual inspection, solves the problem that manual inspection cannot effectively save images and lacks product traceability functions, and eliminates the risk of missed or incorrect inspections caused by mental fatigue due to long-term manual visual inspection. This improves the objectivity and reliability of the inspection. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of an AMB auxiliary back-mounting device after sintering a SiC power module;

[0021] Figure 2 A schematic diagram of the base plate and aluminum profile frame in an AMB auxiliary back-mounting device after SiC power module sintering;

[0022] Figure 3 This is a schematic diagram of a substrate moving component in an AMB auxiliary back-mounting device after SiC power module sintering.

[0023] Figure 4 An exploded view of the substrate moving component in an AMB auxiliary back-mounting device after sintering a SiC power module.

[0024] Figure 5 This is a partial exploded view of the substrate moving component in an AMB auxiliary back-mounting device after sintering a SiC power module.

[0025] Figure 6 This is a schematic diagram of the camera mounting components in an AMB-assisted back-camera device after the SiC power module has been sintered.

[0026] In the attached diagram: 1. Base plate; 2. Aluminum profile frame; 3. Base plate moving assembly; 31. Movable plate; 32. First sliding mechanism; 33. Second sliding mechanism; 34. Mounting frame; 35. Stop block; 36. AMB tray; 4. Camera mounting assembly; 41. Connecting plate; 42. Light source module; 43. Camera; 321. Longitudinal slide rail; 322. Longitudinal slider; 331. Transverse slide rail; 332. Transverse slider; 5. Shooting opening; 6. Handle; 7. Limiting baffle; 8. Light source mounting plate; 9. Ear plate; 10. Camera fixing frame. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] Example 1

[0029] like Figures 1-6 As shown, an AMB-assisted back-shooting device after sintering a SiC power module includes a base plate 1, a substrate moving assembly 3, and a camera mounting assembly 4. An aluminum profile frame 2 is fixedly connected to the bottom of the base plate 1. The substrate moving assembly 3 includes a movable plate 31. The bottom of the movable plate 31 is movably connected to the base plate 1 via a first sliding mechanism 32. The top of the movable plate 31 is movably connected to a mounting frame 34 via a second sliding mechanism 33. Blocks 35 are fixedly connected to both the front and rear sides of the top of the mounting frame 34. An AMB tray 36 is provided on the top of the mounting frame 34 and between the four blocks 35. The camera mounting assembly 4 includes a connecting plate 41. The top of the connecting plate 41 is fixedly connected to the base plate 1. A light source module 42 is fixedly connected to the front side of the connecting plate 41. A shooting camera 43 is fixedly connected to the top of the front side of the connecting plate 41.

[0030] The aluminum profile frame 2 provides stable support for the base plate 1. It can be directly mounted on the track platform, and its position on the platform can be adjusted vertically. This adjustment is tailored to the specific requirements of the camera 43 for assisted back-view photography in various scenarios, thus enhancing the device's practicality. The first sliding mechanism 32 and the second sliding mechanism 33, in conjunction with the movable plate 31 and the mounting frame 34, control the AMB tray 36 for horizontal and vertical position adjustments, ensuring that all substrates placed on the AMB tray 36 are within the shooting range of the camera 43, further improving the device's usability. The connecting plate 41 is used to mount and fix the light source module 42 and the camera 43. The light source module 42 provides supplementary lighting to the bottom of the substrate, improving image clarity. The camera 43 is used to photograph the back of the substrate, facilitating product traceability, improving inspection efficiency, and reducing manual intervention.

[0031] The aluminum profile frame 2 includes two short longitudinal aluminum profiles and two long transverse aluminum profiles. The short longitudinal aluminum profiles and the long transverse aluminum profiles are fixedly connected by aluminum profile connectors to form a square frame.

[0032] The square frame composed of two short longitudinal aluminum profiles and two long transverse aluminum profiles can provide auxiliary support for the base plate 1 and increase the counterweight, thereby improving the stability of the entire auxiliary back-beating device.

[0033] The first sliding mechanism 32 includes two longitudinal slide rails 321. The bottom of the longitudinal slide rails 321 is fixedly connected to the base plate 1. A longitudinal slider 322 is slidably connected to the surface of the longitudinal slide rails 321. The top of the longitudinal slider 322 is fixedly connected to the movable plate 31. The second sliding mechanism 33 includes two transverse slide rails 331. A transverse slider 332 is slidably connected to the surface of the transverse slide rails 331. The top of the transverse slider 332 is fixedly connected to the mounting frame 34.

[0034] The longitudinal slide rail 321 and the longitudinal slider 322 enable the movable plate 31 to slide back and forth on the top of the base plate 1, which facilitates the adjustment of the position of the mounting frame 34. The transverse slide rail 331 and the transverse slider 332 enable the horizontal left and right position adjustment of the mounting frame 34 and the AMB tray 36, which facilitates aligning the substrate placed on the AMB tray 36 with the lens of the camera 43.

[0035] Example 2

[0036] Both the base plate 1 and the movable plate 31 have shooting openings 5 ​​at their tops, and both sides of the mounting frame 34 are fixedly connected with handles 6.

[0037] The shooting opening 5 facilitates the shooting operation of the camera 43 to shoot the back of the substrate, and the handle 6 facilitates the staff to pull the mounting frame 34 to adjust the shooting position of the substrate.

[0038] Limiting baffles 7 are provided on both the front and rear sides of the first sliding mechanism 32, and the bottom of the limiting baffles 7 is fixedly connected to the base plate 1.

[0039] The limiting baffle 7 can limit the longitudinal slider 322 to prevent it from detaching from the surface of the longitudinal slide rail 321.

[0040] The rear side of the light source module 42 is fixedly connected to the connecting plate 41 through the light source mounting plate 8, and ear plates 9 are fixedly connected to both sides of the bottom of the light source mounting plate 8.

[0041] The light source mounting plate 8 can stably install the light source module 42, and the ear plate 9 is used to improve the stability of the light source module 42 during operation and prevent it from shaking.

[0042] The bottom front of the connecting plate 41 is fixedly connected to the shooting camera 43 via the camera fixing frame 10, and both sides of the rear side of the connecting plate 41 are provided with adjustment grooves that cooperate with the camera fixing frame 10.

[0043] The camera mounting frame 10 can work with the adjustment slide to adjust the height of the shooting camera 43, thereby improving its shooting effect.

[0044] The bottom of the base plate 1 has screw holes for use with the aluminum profile frame 2, and the top of the connecting plate 41 is fixedly connected to the base plate 1 by bolts.

[0045] The screw holes facilitate the installation and connection of the base plate 1 and the aluminum profile frame 2, while the bolt-mounted connecting plate 41 facilitates its disassembly and maintenance.

[0046] The bottom of the light source mounting plate 8 has an annular through hole, and the ear plate 9 is triangular in shape. The rear side of the ear plate 9 is fixedly connected to the connecting plate 41.

[0047] The triangular ear plate 9 can improve the stability of the light source mounting plate 8 and prevent the light source module 42 from shaking during shooting, thus affecting the shooting effect.

[0048] The working principle of this utility model is as follows: The AMB tray 36, carrying the sintered AMB substrate, is stably placed on top of the mounting frame 34 and fixed by four stops 35. The operator can push the mounting frame 34 along the horizontal slide rail 331 by holding the handles 6 on both sides of the mounting frame 34, so that it slides horizontally on the second sliding mechanism 33 via the horizontal slider 332, thereby initially adjusting the position of the AMB substrate in the left and right directions. Subsequently, the movable plate 31 is pushed, and the movable plate 31 drives the vertical slider 322 at its bottom to slide back and forth along the vertical slide rail 321 fixed on the base plate 1 on the first sliding mechanism 32, thereby adjusting the position of the AMB substrate in the front and back directions. Through the coordinated movement of the horizontal and vertical directions, the AMB substrate to be tested in the AMB tray 36 is precisely moved to be directly above the imaging opening 5 of the base plate 1 and the movable plate 31, and its back area is aligned with the imaging opening below. The camera 43 lens, fixed to the front of the connecting plate 41, is stably supported by the light source module 42 via the light source mounting plate 8 and the ear plate 9. It emits light upwards, which shines through the shooting opening 5 onto the back of the AMB substrate, providing uniform and sufficient illumination. The camera 43 automatically takes pictures of the back of the AMB substrate illuminated by the light source module 42 through the shooting opening 5, acquires high-definition images, and stores them. After image acquisition is completed, the operator can move the mounting frame 34 again via the handle 6 or push the movable plate 31 to move the next substrate on the AMB tray 36 to the shooting position, repeating the above shooting process until the back of the entire tray of substrates is inspected. Throughout the process, the AMB substrate is always placed inside the AMB tray 36 with its front side facing up, without the need for manual flipping or touching of the front of the substrate, effectively avoiding the risk of contamination. At the same time, all inspection images are automatically saved for subsequent traceability and analysis.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An AMB-assisted back-camera device after sintering a SiC power module, comprising a base plate (1), a substrate moving assembly (3), and a camera mounting assembly (4), characterized in that: The bottom of the base plate (1) is fixedly connected to an aluminum profile frame (2); the base plate moving assembly (3) includes a movable plate (31), the bottom of the movable plate (31) is movably connected to the base plate (1) through a first sliding mechanism (32), the top of the movable plate (31) is movably connected to a mounting frame (34) through a second sliding mechanism (33), the front and rear sides of the top of the mounting frame (34) are fixedly connected to blocks (35), and an AMB tray (36) is provided on the top of the mounting frame (34) and between the four blocks (35); the camera mounting assembly (4) includes a connecting plate (41), the top of the connecting plate (41) is fixedly connected to the base plate (1), the front side of the connecting plate (41) is fixedly connected to a light source module (42), and the top of the front side of the connecting plate (41) is fixedly connected to a shooting camera (43).

2. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The aluminum profile frame (2) includes two short longitudinal aluminum profiles and two long transverse aluminum profiles. The short longitudinal aluminum profiles and the long transverse aluminum profiles are fixedly connected by aluminum profile connectors to form a square frame.

3. The AMB auxiliary back-mounting device after sintering a SiC power module according to claim 1, characterized in that: The first sliding mechanism (32) includes two longitudinal slide rails (321), the bottom of the longitudinal slide rails (321) is fixedly connected to the base plate (1), and a longitudinal slider (322) is slidably connected to the surface of the longitudinal slide rails (321), and the top of the longitudinal slider (322) is fixedly connected to the movable plate (31).

4. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The second sliding mechanism (33) includes two transverse slide rails (331), and a transverse slider (332) is slidably connected to the surface of the transverse slide rails (331). The top of the transverse slider (332) is fixedly connected to the mounting frame (34).

5. The AMB auxiliary back-mounting device after sintering a SiC power module according to claim 1, characterized in that: The top of the base plate (1) and the movable plate (31) are both provided with shooting openings (5), and the two sides of the mounting frame (34) are fixedly connected with handles (6).

6. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The first sliding mechanism (32) is provided with limit baffles (7) on both the front and rear sides, and the bottom of the limit baffles (7) is fixedly connected to the base plate (1).

7. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The rear side of the light source module (42) is fixedly connected to the connecting plate (41) through the light source mounting plate (8), and ear plates (9) are fixedly connected to both sides of the bottom of the light source mounting plate (8).

8. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The bottom front side of the connecting plate (41) is fixedly connected to the shooting camera (43) via the camera fixing frame (10), and both sides of the rear side of the connecting plate (41) are provided with adjustment grooves that cooperate with the camera fixing frame (10).

9. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 1, characterized in that: The bottom of the base plate (1) is provided with screw holes for use with the aluminum profile frame (2), and the top of the connecting plate (41) is fixedly connected to the base plate (1) by bolts.

10. The AMB auxiliary back-mounting device after sintering of a SiC power module according to claim 7, characterized in that: The bottom of the light source mounting plate (8) is provided with an annular through hole, the ear plate (9) is triangular in shape, and the rear side of the ear plate (9) is fixedly connected to the connecting plate (41).

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