Flexible printed circuit board and fabrication method thereof
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A technology of flexible circuit boards and circuit boards, which is applied in the direction of printed circuits, printed circuits, printed circuit components, etc., to achieve the effect of simplifying the connection steps and simple methods
Inactive Publication Date: 2016-03-30
GOERTEK INC
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Abstract
Description
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Problems solved by technology
[0005] In view of the above problems, the present invention provides a flexible circuit board and its preparation method to solve the problem that the existing flexible circuit board needs to use a connector to be electrically connected to other circuit boards
Method used
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Embodiment 1
[0042] figure 2 A cross-sectional schematic diagram of a flexible circuit board with arched protrusions provided in this embodiment, image 3 A cross-sectional schematic diagram of a flexible circuit board with cylindrical protrusions provided for this embodiment.
[0043] refer to figure 2 and image 3 As shown, the flexible circuit board of this embodiment includes a substrate 1, copper foil and a reinforcing part 2, the copper foil covers the upper surface of the substrate 1, and a circuit layer and a plurality of pads 3 are formed on the copper foil; the reinforcing part 2 is bonded to The lower surface of the substrate 1 is used to strengthen the strength of the flexible circuit board;
[0044] At least one bump 4 is provided on each pad 3 of the flexible circuit board in this embodiment;
[0045] The pads 3 of the flexible circuit board contact the pads of another circuit board through the bumps 4 thereon, so as to realize the electrical connection between the flex...
Embodiment 2
[0074] This embodiment provides a method for preparing the flexible circuit board in Embodiment 1.
[0075] Figure 6 The flow chart of the preparation method of the flexible circuit board provided in this embodiment, as Figure 6 as shown, Figure 6 The methods in include:
[0076] S610, covering the upper surface of the substrate with copper foil, and forming a circuit layer and several pads by etching the copper foil.
[0077] S620, providing at least one bump on each pad.
[0078] S630, adhering a reinforcing part to strengthen the strength of the flexible circuit board on the lower surface of the substrate.
[0079] In this embodiment, protrusions are provided on the pads of the flexible circuit board, so that the flexible circuit board can directly contact the pads of other circuit boards through the protrusions on the pad, so as to realize the electrical connection between the flexible circuit board and other circuit boards. connect.
[0080] The method for prepar...
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Abstract
The invention discloses a flexible printed circuit board and a fabrication method thereof. The flexible printed circuit board comprises a base plate (1), a copper foil and a reinforcement part (2), wherein the copper foil covers the upper surface of the base plate (1), a circuit layer and a plurality of bonding pads (3) are formed on the copper foil, the reinforcement part (2) is bonded with the lower surface of the base plate (1) and used for enhancing the strength of the flexible printed circuit board, at least one bulge (4) is arranged on each bonding pad (3), and the bonding pad (3) of the flexible printed circuit board is in contact with the bonding pad of another circuit board through the bulge (4) on the bonding pad (3) so as to achieve electric connection of the flexible printed circuit board and another circuit board. In the technical scheme, the flexible printed circuit board can be electrically connected with other circuit boards by means of the bulges of the flexible printed circuit board, and compared with the flexible printed circuit board connected with other circuit boards by a connector in the prior art, the flexible printed circuit board has the advantages that the connection step of the flexible printed circuit board with other circuit boards is effectively simplified.
Description
technical field [0001] The invention relates to the technical field of flexible circuit boards, in particular to a flexible circuit board and a preparation method thereof. Background technique [0002] Flexible printed circuit board (Flexible Printed Circuit Board) is a new type of data cable made of insulating materials and extremely thin tinned flat copper wires, which are laminated by high-tech automatic equipment production lines. , Easy to disassemble, easy to solve electromagnetic shielding, etc., the number and spacing of wires can be selected arbitrarily, which makes the connection more convenient, greatly reduces the volume of electronic products, reduces production costs, and improves production efficiency. It is more suitable for the connection between moving parts and the main board. , PCB board to PCB board, used as data transmission cable in miniaturized electrical equipment. [0003] At present, existing flexible circuit boards generally need to use connector...
Claims
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Application Information
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