Copper block-embedded PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB (printed circuit board) embedded with copper blocks. The PCB comprises a PCB body and a plurality of copper blocks, the PCB body is provided with a plurality of accommodating grooves matched with the copper blocks, the copper blocks are in a prismatic table shape, the accommodating grooves are prismatic table-shaped grooves, and resin is filled between the copper blocks and the accommodating grooves. According to the utility model, the copper block and the accommodating groove are designed to be prismatic table-shaped, so that the resin adhesive in the copper block and the accommodating groove can be effectively prevented from being scraped when the copper block is embedded into the accommodating groove, and the connection effect between the copper block and the PCB is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCB board technical field, concretely relates to a buried copper block PCB board. BACKGROUND

[0002] In the production and manufacturing process of multilayer circuit board, a pressing process is needed, that is, through a semi-cured sheet (also called a PP sheet, which is a sheet-shaped bonding material combined by resin and glass fiber cloth), an inner layer core plate with inner layer circuit is pressed with an outer layer copper foil to form a production plate with a multilayer structure, and then drilling, copper sinking, full plate electroplating, outer layer circuit, silk printing resistance welding, surface treatment, molding and other processes are sequentially performed on the production plate with the multilayer structure, thereby completing the manufacturing of the multilayer circuit board.

[0003] With the increasing demand of customers for PCB board heat dissipation, circuit boards with built-in copper blocks are increasingly valued by PCB manufacturers, and more and more PCB manufacturers develop different types of buried copper products. However, the traditional buried copper block PCB needs to coat resin glue on the accommodating groove and the copper block of the PCB first, and then embed the copper block into the accommodating groove. During the embedding process of the copper block into the accommodating groove, the resin glue in the copper block and the accommodating groove will be scraped off, resulting in a hollow gap between the accommodating groove and the copper block, which affects the connection effect between the copper block and the PCB. UTILITY MODEL CONTENT

[0004] The utility model solves the problem of providing a buried copper block PCB board, which can effectively prevent the resin glue in the copper block and the accommodating groove from being scraped off during the embedding process of the copper block into the accommodating groove, thereby improving the connection effect between the copper block and the PCB.

[0005] The utility model provides a technical scheme to solve the above problem: a buried copper block PCB board, comprising a PCB board body and a plurality of copper blocks.

[0006] The PCB board body is provided with a plurality of accommodating grooves matched with the copper blocks, the copper blocks are in the shape of a prism, the accommodating grooves are in the shape of a prism, and the copper blocks and the accommodating grooves are filled with resin.

[0007] Preferably, the PCB board body comprises core plate layer one, adhesive layer one, core plate layer two, adhesive layer two, and core plate layer three arranged in sequence.

[0008] Preferably, the adhesive layer one and the adhesive layer two are both resin glue layers.

[0009] Preferably, it further comprises two layers of glue-resistant film layers, and the two layers of glue-resistant film layers are arranged on the upper and lower end faces of the PCB board body, respectively.

[0010] Preferably, the resin is epoxy resin.

[0011] Preferably, the copper block is in the shape of a quadrangular prism.

[0012] Preferably, the side end surface of the copper block is provided with a convex rib, and the accommodating groove is provided with a positioning groove matched with the convex rib.

[0013] Preferably, the convex rib is four and is distributed on both sides of the copper block.

[0014] Compared with the prior art, the utility model has the advantages that: the copper block and the accommodating groove are designed in the shape of a quadrangular prism, so that the resin glue in the copper block and the accommodating groove can be effectively prevented from being scraped off during embedding of the copper block into the accommodating groove, and the connecting effect between the copper block and the PCB is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the utility model and are provided to explain the utility model and to complement the present utility model, and do not constitute improper limitations on the utility model.

[0016] Figure 1 is a three-dimensional structural schematic view of the utility model;

[0017] Figure 2 is a partial sectional view of the utility model;

[0018] Figure 3 is a structural schematic view of the copper block of the utility model;

[0019] Figure 4 is a bottom view of the copper block of the utility model.

[0020] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the utility model and are provided to explain the utility model and to complement the present utility model, and do not constitute improper limitations on the utility model. DETAILED DESCRIPTION

[0021] The embodiment of the utility model will be described in detail below by combining with the drawings and the embodiments, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects of the utility model can be fully understood and implemented.

[0022] In the description of the utility model, it is necessary to explain that, for the direction words, if the terms "center", "transverse", "vertical", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, and cannot be understood as limiting the specific protection scope of the utility model.

[0023] In addition, if the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first" and "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several" is two or more than two, unless otherwise explicitly specified and limited.

[0024] In the utility model, except for another explicit provision and limitation, if the terms "assembly", "connection", "connection" are understood in a broad sense, for example, it can be fixedly connected, and can also be detachably connected, or integrally connected, and can also be mechanically connected, and can be directly connected, or connected through an intermediate medium, and can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.

[0025] It should be understood that when used in the specification and the appended claims, the terms "include" and "contain" indicate the existence of the described features, whole, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0026] It should also be understood that the terms used in the description of the utility model embodiments herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model embodiments. As used in the description of the utility model embodiments and the appended claims, unless the context clearly indicates otherwise, the singular form "a", "an" and "the" is intended to include the plural form.

[0027] The specific embodiment of the utility model is shown in the drawings, a copper block PCB board, including PCB board body and several copper blocks 7;

[0028] The PCB plate body is provided with a plurality of accommodating grooves matched with the copper blocks, the copper block 7 is a prism, the accommodating grooves are prism-shaped grooves, and the copper block 7 is filled with resin between the copper block and the accommodating grooves.

[0029] In the above scheme, by designing the copper block and the accommodating groove as a prism, the resin glue in the copper block and the accommodating groove can be effectively prevented from being scraped off during embedding of the copper block in the accommodating groove, and the connecting effect between the copper block and the PCB is improved.

[0030] Specifically, those skilled in the art can know that the PCB plate body includes core plate layer one 2, bonding layer one 3, core plate layer two 4, bonding layer two 5, and core plate layer three which are sequentially arranged, and it should be noted that the specific composition of the PCB plate body can be designed and combined according to different needs, and is not limited to the scheme in the embodiment. Further, the bonding layer one 3 and the bonding layer two 5 are both resin glue layers.

[0031] As another embodiment of the utility model, it further includes two layers of glue-resistant film layers 1, and the two layers of glue-resistant film layers 1 are arranged on the upper and lower end faces of the PCB plate body, respectively.

[0032] In the embodiment, the resin is epoxy resin. Specifically, the copper block 7 is a quadrangular prism.

[0033] In order to improve the contact area between the copper block and the accommodating groove, a convex rib 8 is arranged on the side end face of the copper block 7, and a positioning groove matched with the convex rib 8 is arranged on the accommodating groove. Through the cooperation of the convex rib and the positioning groove, on the one hand, the contact area between the copper block and the accommodating groove can be effectively improved, and on the other hand, the stability of the cooperation between the copper block and the accommodating groove can be improved.

[0034] Specifically, as shown in Figure 3 and Figure 4 The convex rib 8 is four and is distributed on both sides of the copper block 7.

[0035] During installation, the area of the lower end of the copper block is smaller than the area of the upper opening of the accommodating groove, so the resin glue on the copper block and the accommodating groove will not be scraped off during installation of the copper block.

[0036] The above only describes the best embodiment of the utility model, but cannot be understood as a limitation on the claims. The utility model is not limited to the above embodiments, and the specific structure can be changed. Any change made within the protection scope of the independent claims of the utility model is within the protection scope of the utility model.

Claims

1. A buried-copper mass (BCM) PCB board, characterized by: The PCB plate body and a plurality of copper blocks (7) are included. A plurality of accommodating grooves matched with the copper blocks are arranged on the PCB plate body, the copper block (7) is in the shape of a prism, the accommodating groove is in the shape of a prism, and the copper block (7) and the accommodating groove are filled with resin.

2. The buried-copper mass PCB board of claim 1, wherein: The PCB plate body includes a core plate layer one (2), a bonding layer one (3), a core plate layer two (4), a bonding layer two (5) and a core plate layer three which are sequentially arranged.

3. The buried-copper mass PCB board of claim 2, wherein: The bonding layer one (3) and the bonding layer two (5) are both resin glue layers.

4. The buried-copper mass PCB of claim 1, wherein: Two layers of glue-resistant film layers (1) are further included, and the two layers of glue-resistant film layers (1) are respectively arranged on the upper and lower end faces of the PCB plate body.

5. The buried-copper mass PCB of claim 1, wherein: The resin is epoxy resin.

6. The buried-copper mass PCB of claim 1, wherein: The copper block (7) is in the shape of a quadrangular prism.

7. The buried-copper mass PCB of claim 1, wherein: A convex rib (8) is arranged on the side end face of the copper block (7), and a positioning groove matched with the convex rib (8) is arranged on the accommodating groove.

8. The buried-copper mass PCB board of claim 7, wherein: The convex rib (8) is four and is distributed on both sides of the copper block (7).

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