High-strength anti-bending aluminum nitride substrate

Abstract

The utility model discloses a high-strength anti-bending aluminum nitride substrate, which comprises a bottom plate layer, an insulating layer, a heat dissipation layer and an anti-bending structure, the anti-bending plate is fixed inside the bottom plate layer, when the left end and the right end of the bottom plate layer are pressed, the left end and the right end of the anti-bending plate can be stressed and bent, one end of the anti-bending rib is fixed on the anti-bending head, the other end of the anti-bending rib is fixed on the edge portion of the anti-bending plate, and therefore the left end and the right end of the anti-bending plate can be pulled by the anti-bending rib when being stressed and bent. When the anti-bending plate is pressed to deform, the anti-pressing plate can certainly restrain the middle of the anti-bending plate from being stressed to bend and deform so as to certainly restrain the anti-bending plate from bending, the first longitudinal anti-pressing rib and the second longitudinal anti-pressing rib can restrain the anti-bending plate from being longitudinally bent when the anti-bending plate is pressed to deform front and back, and due to the fact that the anti-bending plate is fixed in the bottom plate layer, the anti-bending plate is fixed to the bottom plate layer. And the beneficial effect of high-strength bending resistance of the bottom plate layer is achieved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum nitride substrate technology, specifically to a high-strength, bend-resistant aluminum nitride substrate. Background Technology

[0002] Aluminum nitride substrate is a high-performance ceramic material that is widely used in electronic packaging, power modules, LED heat dissipation and other fields due to its excellent thermal conductivity, electrical insulation and mechanical strength.

[0003] Existing patent CN207014900U discloses an aluminum nitride substrate, comprising a copper foil layer, a first thermally conductive silicone layer, an epoxy fiberglass board layer, a second thermally conductive silicone layer, and an aluminum nitride substrate layer. The lower surface of the copper foil layer has a plurality of copper foil thermally conductive grooves spaced apart, and the upper surface of the epoxy fiberglass board layer has a plurality of fiberglass board thermally conductive grooves spaced apart. The lower surface of the copper foil layer is bonded to the upper surface of the epoxy fiberglass board layer via the first thermally conductive silicone layer, and the lower surface of the epoxy fiberglass board layer is bonded to the aluminum nitride substrate layer via the second thermally conductive silicone layer. The aluminum nitride substrate layer has a plurality of through holes spaced apart along a horizontal direction, and each through hole is filled with a graphite thermally conductive sheet.

[0004] The aforementioned patents or existing aluminum nitride substrates have the following problems:

[0005] The bending resistance of existing aluminum nitride substrates is a key performance indicator when they are applied to flexible electronics, complex shape packaging or dynamic load environments. However, as a typical ceramic material, it is inherently brittle and has naturally weak bending resistance. Utility Model Content

[0006] The purpose of this invention is to provide a high-strength, bend-resistant aluminum nitride substrate to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength, bend-resistant aluminum nitride substrate, comprising a base plate layer, an insulating layer disposed on the base plate layer, a heat dissipation layer disposed on the insulating layer, an anti-bending structure disposed in the base plate layer, the anti-bending structure comprising an anti-bending plate, the anti-bending plate disposed in the base plate layer, an anti-bending head formed in the middle of the anti-bending plate, anti-bending ribs disposed on the anti-bending plate, and an anti-compression plate disposed on the anti-bending plate.

[0008] Preferably, the bottom slab layer is provided with a first longitudinal compressive rib, the first longitudinal compressive rib is arranged side by side, and the compressive plate is pressed on the first longitudinal compressive rib.

[0009] Preferably, the bending reinforcement includes a second longitudinal compression reinforcement.

[0010] Preferably, the bending reinforcement is staggered from the compression plate.

[0011] Preferably, the end of the bending plate is provided with a shaping plate, and the shaping plate is arranged vertically.

[0012] Preferably, the surface of the shaping plate is provided with a pressure-resistant strip, which is fixed to the bending reinforcement.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The bending-resistant plate is fixed inside the base slab. When the left and right ends of the base slab are compressed, the left and right ends of the bending-resistant plate will bend due to the force. However, one end of the bending-resistant rib is fixed to the bending head, and the other end is fixed to the edge of the bending-resistant plate. Therefore, when the left and right ends of the bending-resistant plate are bent under force, they will be pulled back by the bending-resistant rib. At the same time, when the bending-resistant plate is deformed under pressure, the compression plate can suppress the bending deformation of the middle part of the bending-resistant plate to a certain extent, so as to achieve a certain degree of suppression of bending of the bending-resistant plate. The first longitudinal compression rib and the second longitudinal compression rib can suppress the longitudinal bending of the bending-resistant plate when it is subjected to front and rear compression deformation. Since the bending-resistant plate is fixed inside the base slab, the beneficial effect of high-strength bending resistance of the base slab is achieved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the anti-bending plate structure of this utility model.

[0018] In the diagram: base plate layer-1, insulation layer-2, heat dissipation layer-3, bending structure-4, bending plate-41, bending head-42, bending rib-43, compression plate-44, first longitudinal compression rib-45, second longitudinal compression rib-46, shaping plate-47, compression strip plate-48. Detailed Implementation

[0019] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0020] Please see Figure 1 and Figure 2 This utility model provides a high-strength, bend-resistant aluminum nitride substrate, including a base plate layer 1, an insulating layer 2 disposed on the base plate layer 1, a heat dissipation layer 3 disposed on the insulating layer 2, and an anti-bending structure 4 disposed in the base plate layer 1.

[0021] Please see Figure 2 and Figure 3This utility model provides a high-strength, bend-resistant aluminum nitride substrate. The bend-resistant structure 4 includes a bend-resistant plate 41. The bend-resistant plate 41 is disposed in the bottom plate layer 1. A bend-resistant head 42 is formed in the middle of the bend-resistant plate 41. A bend-resistant rib 43 is fixed on the bend-resistant plate 41. One end of the bend-resistant rib 43 is connected to the bend-resistant head 42, and the other end is fixed to the end of the bend-resistant plate 41. A pressure-resistant plate 44 is fixed on the bend-resistant plate 41. The pressure-resistant plate 44 is fixed inside the bend-resistant head 42. A first longitudinal pressure-resistant rib 45 is fixed in the bottom plate layer 1. The first longitudinal pressure-resistant ribs 45 are arranged side by side. The pressure-resistant plate 44 presses on the first longitudinal pressure-resistant ribs 45. A second longitudinal pressure-resistant rib 46 is arranged in the bend-resistant rib 43. The bend-resistant rib 43 and the pressure-resistant plate 44 are staggered.

[0022] Specifically, the bending plate 41 is fixed inside the bottom plate layer 1. When the left and right ends of the bottom plate layer 1 are compressed, the left and right ends of the bending plate 41 will bend under stress. However, one end of the bending rib 43 is fixed to the bending head 42, and the other end is fixed to the edge of the bending plate 41. Therefore, when the left and right ends of the bending plate 41 are bent under stress, they will be pulled by the bending rib 43. At the same time, when the bending plate 41 is deformed under pressure, the compression plate 44 can suppress the bending deformation of the middle part of the bending plate 41 to a certain extent, so as to suppress the bending of the bending plate 41 to a certain extent. The first longitudinal compression rib 45 and the second longitudinal compression rib 46 can suppress the longitudinal bending of the bending plate 41 when the bending plate 41 is deformed under front and rear pressure. Since the bending plate 41 is fixed inside the bottom plate layer 1, the beneficial effect of high-strength bending resistance is achieved for the bottom plate layer 1.

[0023] A shaping plate 47 is provided at the end of the bending plate 41. The shaping plate 47 is vertically arranged, and a pressure-resistant strip 48 is provided on the surface of the shaping plate 47. The pressure-resistant strip 48 is fixed on the bending reinforcement 43.

[0024] Specifically, the shaping plate 47 can enhance the compressive strength of the side wall of the bottom plate layer 1 when it is under pressure, thus ensuring the shape of the shaping plate 47. Moreover, the pressure-resistant strip plate 48 can provide support for the shaping plate 47.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength, bend-resistant aluminum nitride substrate, comprising a base plate layer (1), an insulating layer (2) disposed on the base plate layer (1), and a heat dissipation layer (3) disposed on the insulating layer (2), characterized in that: It also includes a bending structure (4), in which the bottom plate layer (1) is provided with a bending structure (4), the bending structure (4) includes a bending plate (41), the bottom plate layer (1) is provided with a bending plate (41), a bending head (42) is formed in the middle of the bending plate (41), a bending rib (43) is provided on the bending plate (41), and a compression plate (44) is provided on the bending plate (41).

2. The high-strength, bend-resistant aluminum nitride substrate according to claim 1, characterized in that: The bottom plate layer (1) is provided with a first longitudinal compressive rib (45), which is arranged in a row, and the compressive plate (44) is pressed on the first longitudinal compressive rib (45).

3. The high-strength, bend-resistant aluminum nitride substrate according to claim 1, characterized in that: The bending reinforcement (43) includes a second longitudinal compression reinforcement (46).

4. The high-strength, bend-resistant aluminum nitride substrate according to claim 1, characterized in that: The bending reinforcement (43) is staggered from the compression plate (44).

5. The high-strength, bend-resistant aluminum nitride substrate according to claim 1, characterized in that: The bending plate (41) is provided with a shaping plate (47) at its end, and the shaping plate (47) is arranged vertically.

6. The high-strength, bend-resistant aluminum nitride substrate according to claim 5, characterized in that: The surface of the shaping plate (47) is provided with a pressure-resistant strip (48), which is fixed on the bending reinforcement (43).

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