Rigid-flex board

Abstract

The utility model discloses a rigid-flex board which comprises a CS1 layer, a first empty layer, a first auxiliary board, a second empty layer, an SS1 layer, a CS2 layer, a third empty layer, a second auxiliary board, a fourth empty layer and an SS2 layer which are sequentially distributed from top to bottom, a circuit of a CS layer of a main board area is arranged in the CS1 layer of an auxiliary board area, a circuit of the CS1 layer of the auxiliary board area is arranged in the first empty layer, a circuit of an SS layer of the main board area is arranged in the SS2 layer of the auxiliary board area, and a circuit of the SS2 layer of the auxiliary board area is arranged in the third empty layer. The SS2 layer circuit of the auxiliary board area is arranged in the fourth empty layer, and the top surface of the CS1 layer and the bottom surface of the SS2 layer of the auxiliary board area are coated with waterproof breathable films. According to the rigid-flex board, an original CS layer and an original SS layer are omitted, so that the thickness of the main board area is reduced to be the same as or similar to that of the auxiliary board area, a connector on the main board area can be replaced normally, and the universality of the circuit board is improved. The waterproof breathable film is adopted to replace an original CS layer and an original SS layer to protect the auxiliary board area, and meanwhile circuit distribution of the main board area and the auxiliary board area is reset, so that the original circuit function of the rigid-flexible combined board is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a rigid-flexible board. Background Art

[0002] like Figure 1 and Figure 2 As shown, the existing main and sub-board structure rigid-flexible board includes a CS layer, empty layer 1, CS1 layer, empty layer 2, the first sub-board, empty layer 3, SS1 layer, CS2 layer, empty layer 4, the second sub-board, empty layer 5, SS2 layer, empty layer 6 and SS layer, which are distributed in sequence from top to bottom. The CS layer and SS layer of the sub-board area are mainly used to protect the hole positions of the sub-board area. After the subsequent process is completed, the CS layer and SS layer of the sub-board area need to be peeled off to expose the hole positions of the sub-board area. The CS layer and SS layer of the main board area need to be retained because they are equipped with circuits. This results in the main board area of ​​the existing rigid-flexible board being thicker than the sub-board area. The thicker main board area will make it impossible to replace some connectors on it normally. Only special connectors can be customized, which reduces the versatility of the circuit board. During assembly, extra attention needs to be paid to distinguishing the connectors, thereby increasing the production cost of the circuit board. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a rigid-flexible board that enables the connectors in the mainboard area to be normally replaced, thereby improving the versatility of the circuit board and reducing the production cost of the circuit board.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: a rigid-flexible board, comprising a CS1 layer, a first empty layer, a first sub-board, a second empty layer, a SS1 layer, a CS2 layer, a third empty layer, a second sub-board, a fourth empty layer and a SS2 layer distributed in sequence from top to bottom, the CS layer circuit of the main board area is arranged in the CS1 layer of the sub-board area, the CS1 layer circuit of the sub-board area is arranged in the first empty layer, the SS layer circuit of the main board area is arranged in the SS2 layer of the sub-board area, and the SS2 layer circuit of the sub-board area is arranged in the fourth empty layer, and the top surface of the CS1 layer and the bottom surface of the SS2 layer of the sub-board area are both covered with a waterproof and breathable film.

[0005] Compared with the prior art, the beneficial effect of the present invention is that the present rigid-flexible board eliminates the original CS layer and SS layer, the thickness of the sub-board area remains unchanged, and the thickness of the main board area is reduced to the same or similar to that of the sub-board area, so that the connector on the main board area can be replaced normally. For the connector on the original main board area, it is only necessary to shorten the pins to adapt and use it normally. Therefore, there is no need to customize special connectors, which can improve the versatility of the circuit board, and can also reduce the number of boards of the rigid-flexible board and reduce the production cost of the circuit board. In addition, the present rigid-flexible board is coated with a waterproof and breathable membrane on the top surface of the CS1 layer and the bottom surface of the SS2 layer of the sub-board area, which can replace the protective effect of the original CS layer and SS layer on the sub-board area and avoid the impact of subsequent processes on the hole position of the sub-board area. The CS layer circuit of the main board area is located in the CS1 layer of the sub-board area, so it can be ensured that after the CS layer is eliminated, the original circuit function of the main board area can still be maintained. The CS1 layer circuit of the sub-board area is located in the first empty layer, which can ensure the integrity of the circuit of the sub-board area and maintain the original circuit function of the sub-board area without affecting other circuits inside the sub-board area. Similarly, the SS layer circuits of the main board area are located within the SS2 layer of the sub-board area. This ensures that even after the SS layer is eliminated, the original circuit functions of the main board area can still be maintained. The SS2 layer circuits of the sub-board area are located within the fourth empty layer. While not affecting other circuits within the sub-board area, the integrity of the sub-board area circuits can also be guaranteed, maintaining the original circuit functions of the sub-board area. Therefore, this rigid-flex board can reduce the thickness of the main board area to the same or similar thickness as the sub-board area without changing the original circuit functions and the subsequent circuit board production process. This allows the connectors on the main board area to be replaced normally, improving the versatility of the circuit board.

[0006] In the rigid-flex board described above, the thickness of the main board area is equal to the thickness of the auxiliary board area.

[0007] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of an existing rigid-flex board with the sub-board area uncovered;

[0009] Figure 2 This is a schematic diagram of the existing rigid-flex board sub-board area after the cover is removed;

[0010] Figure 3 Schematic diagram of a rigid-flex board according to an embodiment of the present invention.

[0011] Description of the accompanying drawings: 100 waterproof breathable membrane, 200 first empty layer, 300 first sub-board, 400 second empty layer, 500 third empty layer, 600 second sub-board, 700 fourth empty layer, 800 main board area, 900 sub-board area. DETAILED DESCRIPTION

[0012] The embodiments of the present invention are described in detail below. Figure 3 An embodiment of the present invention provides a rigid-flexible board, including a CS1 layer, a first empty layer 200, a first sub-board 300, a second empty layer 400, an SS1 layer, a CS2 layer, a third empty layer 500, a second sub-board 600, a fourth empty layer 700, and an SS2 layer, which are arranged in sequence from top to bottom. The CS layer circuit of the main board area 800 is arranged in the CS1 layer of the sub-board area 900, the CS1 layer circuit of the sub-board area 900 is arranged in the first empty layer 200, the SS layer circuit of the main board area 800 is arranged in the SS2 layer of the sub-board area 900, and the SS2 layer circuit of the sub-board area 900 is arranged in the fourth empty layer 700. The top surface of the CS1 layer and the bottom surface of the SS2 layer of the sub-board area 900 are both covered with a waterproof and breathable membrane 100.

[0013] This rigid-flex board eliminates the original CS layer and SS layer. The thickness of the sub-board area 900 remains unchanged, while the thickness of the main board area 800 is reduced to the same or similar thickness as the sub-board area 900. This allows the connectors on the main board area 800 to be replaced normally. For the original connectors on the main board area 800, only the pins need to be shortened for normal adaptation and use. Therefore, there is no need for additional customized special connectors, which can improve the versatility of the circuit board, reduce the number of rigid-flex boards, and reduce the production cost of the circuit board. In addition, this rigid-flex board has a waterproof and breathable membrane 100 attached to the top surface of the CS1 layer and the bottom surface of the SS2 layer of the sub-board area 900, which can replace the original CS layer and SS layer to protect the sub-board area 900 and avoid the impact of subsequent processes on the holes in the sub-board area 900. The CS layer circuits of the main board area 800 are located within the CS1 layer of the secondary board area 900. This ensures that even after the CS layer is removed, the original circuit functions of the main board area 800 are still maintained. The CS1 layer circuits of the secondary board area 900 are located within the first vacant layer 200. This does not affect other circuits within the secondary board area 900, while also ensuring the integrity of the circuits in the secondary board area 900 and maintaining the original circuit functions of the secondary board area 900. Similarly, the SS layer circuits of the main board area 800 are located within the SS2 layer of the secondary board area 900. This ensures that even after the SS layer is removed, the original circuit functions of the main board area 800 are still maintained. The SS2 layer circuits of the secondary board area 900 are located within the fourth vacant layer 700. This does not affect other circuits within the secondary board area 900, while also ensuring the integrity of the circuits in the secondary board area 900 and maintaining the original circuit functions of the secondary board area 900. Therefore, this rigid-flexible board can reduce the thickness of the main board area 800 to the same or similar thickness as the sub-board area 900 without changing the original circuit function and subsequent circuit board production process, so that the connector on the main board area 800 can be replaced normally, thereby improving the versatility of the circuit board.

[0014] Of course, it is understandable that the first empty layer 200 in this solution corresponds to the empty layer 2 in the original structure, and the fourth empty layer 700 corresponds to the empty layer 5 in the original structure. The empty layers are some structures that naturally remain after etching the circuits on the core board. Some places are copper sheets, and some places are base materials. The empty layers originally have no other functions. Therefore, the CS1 layer circuit of the sub-board area 900 is set in the first empty layer 200, which does not affect the functions of other circuits in the sub-board area 900. The same is true for other circuit layers, which will not be elaborated here. In addition, for the circuit board, the function of the circuit board is not affected without affecting the wiring network. The rigid-flexible board moves the CS1 layer circuit of the sub-board area 900 to the first empty layer 200 and the SS2 layer circuit to the fourth empty layer 700, which does not affect the wiring network, and therefore does not affect the original function of the rigid-flexible board. The same is true for the circuit of the main board area 800, which will not be elaborated here.

[0015] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operated in a specific direction, and cannot be understood as a limitation on the present invention.

[0016] In the description of this utility model, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0017] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0018] 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 rigid-flex board having a main board area and a sub-board area, characterized in that: It includes a CS1 layer, a first empty layer, a first sub-board, a second empty layer, a SS1 layer, a CS2 layer, a third empty layer, a second sub-board, a fourth empty layer and a SS2 layer, which are distributed in sequence from top to bottom. The CS layer circuit of the main board area is arranged in the CS1 layer of the sub-board area, the CS1 layer circuit of the sub-board area is arranged in the first empty layer, the SS layer circuit of the main board area is arranged in the SS2 layer of the sub-board area, and the SS2 layer circuit of the sub-board area is arranged in the fourth empty layer. The top surface of the CS1 layer and the bottom surface of the SS2 layer of the sub-board area are both covered with a waterproof and breathable membrane.

2. The rigid-flex board according to claim 1, wherein: The thickness of the main plate region is equal to the thickness of the auxiliary plate region.

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