Composite flexible circuit board
By applying strip-shaped flexible copper clad tape to the single-layer flexible circuit board and covering the mask, the problem of high cost and insufficient flexibility in the production of composite flexible circuit boards in the prior art is solved, and the flexibility and diversification of complex circuit design is achieved, and the production cost is reduced.
Patent Information
- Application Number
- CN202421755020.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-23
AI Technical Summary
It is difficult to efficiently produce composite flexible circuit boards suitable for personalized and customized small and medium-sized orders, and the production costs are relatively high.
A composite flexible circuit board structure including a single-layer flexible circuit board, a strip-shaped flexible copper clad strip and a facial mask is adopted. By bonding the strip-shaped flexible copper clad strip in the interval area of the single-layer flexible circuit board and covering the mask, the conduction of complex circuit design is achieved, avoiding hole punching and electroplating processes.
It realizes the flexibility and diversification of complex circuit design, reduces production costs, is suitable for mass production, and supports the production of flexible substrates with infinite lengths of roll-to-roll.
Smart Images
Figure CN222884849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flexible circuit boards, in particular to a composite flexible circuit board. Background Art
[0002] With the popularity of the no-main-lamp design in the lighting field, linear lighting fixtures have become the mainstream lighting products in the lighting industry, and their light sources are mostly long linear flexible light strips. With the popularization of intelligent lighting, flexible light strips have become more diversified, and color adjustment has become the direction of personalized pursuit. To make flexible light strips that can change colors, the circuits of the flexible substrates used are more complicated, and generally multi-layer flexible circuit boards are required. To make roll-to-roll infinitely long multi-layer flexible circuit boards suitable for large-scale production, it is generally adopted to drill holes in the multi-layer copper-clad laminates and then conduct the multi-layer circuits through a roll-to-roll electroplating production line. However, this process equipment requires large investment and low production efficiency, resulting in high costs. It is only suitable for large-scale production of a single product, and is not suitable for small and medium-sized orders such as personalized and customized production. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a composite flexible circuit board with high production flexibility and low cost.
[0004] According to the composite flexible circuit board of the embodiment of the utility model, it includes a single-layer flexible circuit board, a strip flexible copper-clad tape and a facial mask. The circuit of the single-layer flexible circuit board includes a main circuit area, a main conductor area and a spacing area. The main circuit area is used to mount electronic components such as LED lamp beads / LED chips, resistors, and ICs. The main conductor area is used to connect an external power supply. The spacing area is provided between the main circuit area and the main conductor area. The spacing area includes a plurality of thin lines connecting the main circuit area and the main conductor area. The strip flexible copper-clad tape is covered on the spacing area to form a composite circuit board, the copper surface of the strip flexible copper-clad tape faces upward, and the facial mask is covered on the composite circuit board.
[0005] According to some embodiments of the present invention, the strip-shaped flexible copper-clad tape is cut from a copper-clad laminate whose base film is a PI film or a PET film.
[0006] According to some embodiments of the utility model, the strip-shaped flexible copper-clad tape is formed by laminating a long strip of PI film or PET film to a long strip of copper foil of the same width by glue.
[0007] According to some embodiments of the present invention, two main wiring areas are provided on the single-layer flexible circuit board, and the main wiring area and the spacing area are both located between the two main wiring areas.
[0008] According to some embodiments of the present invention, there are a plurality of the main line areas, the main conductor areas and the spacing areas respectively, and correspondingly, there are a plurality of the strip-shaped flexible copper-clad tapes and they are fitted one-to-one with the spacing areas.
[0009] According to some embodiments of the present invention, the mask is solder resist ink or a covering film.
[0010] The composite flexible circuit board according to the embodiment of the utility model has at least the following beneficial effects: first, a roll-to-roll single-layer flexible circuit board is manufactured, and the circuit on the single-layer flexible circuit board includes a main circuit area for mounting electronic components such as LED lamp beads / LED chips, resistors, ICs, etc., a main conductor area for connecting an external power supply, and a spacing area for bonding a strip flexible copper-clad tape, and the main circuit area and the main conductor area are connected by a thin wire arranged on the spacing area, and then the strip flexible copper-clad tape is covered on the spacing area with its copper surface facing up, and later on, the strip flexible copper-clad tape can be connected to the main circuit area of the single-layer flexible circuit board by mounting components such as resistors, and complex circuit design can be realized without punching and electroplating processes to meet the diverse needs of intelligent lighting; that is, the single-layer flexible circuit board is prefabricated, and the strip flexible copper-clad tape only needs to be bonded to the prefabricated single-layer flexible circuit board, and then solder resist ink is printed or a covering film is affixed, which is convenient for manufacturing a roll-to-roll infinitely long flexible substrate, more suitable for mass production, and low production cost.
[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;
[0013] Figure 1 It is a structural diagram of a single-layer flexible circuit board;
[0014] Figure 2 This is a structural diagram of a multi-layer flexible circuit board;
[0015] Figure 3 This is the second structural diagram of the multi-layer flexible circuit board. DETAILED DESCRIPTION
[0016] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0017] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0018] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0019] Reference Figures 1 to 3 The utility model provides a composite flexible circuit board, including a single-layer flexible circuit board 10, a strip flexible copper-clad tape 20 and a mask 30. The single-layer flexible circuit board 10 is a roll-to-roll single-layer circuit board with pre-made circuits. The circuits of the single-layer flexible circuit board 10 include a main circuit area 12, a main conductor area 11 and a spacing area 13. The main circuit area 12 is used to mount electronic components such as LED lamp beads / LED chips, resistors, and ICs. The main conductor area 11 is used to connect an external power supply. A spacing area 13 is provided between the main circuit area 12 and the main conductor area 11. The spacing area 13 includes a plurality of thin wires 14 connecting the main circuit area 12 and the main conductor area 11; the strip flexible copper-clad tape 20 is covered and attached to the spacing area 13 to form a composite circuit board, the copper surface of the strip flexible copper-clad tape 20 faces upward, and the mask covers the composite circuit board.
[0020] That is, firstly, a roll-to-roll single-layer flexible circuit board 10 is prepared, and the circuit on the single-layer flexible circuit board 10 includes a main circuit area 12 for mounting electronic components such as LED lamp beads / LED chips, resistors, ICs, etc., a main conductor area 11 for connecting an external power supply, and a spacing area 13 for fitting a strip flexible copper-clad tape 20, and the main circuit area 12 and the main conductor area 11 are connected by a thin wire 14 arranged on the spacing area 13, and then the strip flexible copper-clad tape 20 is covered on the spacing area 13 with its copper surface facing up. In the later stage, the strip flexible copper-clad tape 20 can be connected to the main circuit area 12 of the single-layer flexible circuit board 10 by mounting components such as resistors. Complex circuit design can be achieved without punching and electroplating processes to meet the diverse needs of intelligent lighting; that is, the single-layer flexible circuit board 10 is prefabricated, and the strip flexible copper-clad tape 20 only needs to be attached to the prefabricated single-layer flexible circuit board 10, and then solder mask ink is printed or covering film is attached, which is convenient for making a roll-to-roll infinitely long flexible substrate, more suitable for mass production, and low production cost.
[0021] Further, the strip-shaped flexible copper-clad tape 20 is cut from a copper-clad laminate whose bottom film is a PI film or a PET film. Alternatively, the strip-shaped flexible copper-clad tape 20 is formed by gluing a long strip of PI film or PET film onto a long strip of copper foil of the same width.
[0022] In some embodiments, two main wiring areas 11 are provided on the single-layer flexible circuit board 10 , and the main wiring area 12 and the spacing area 13 are both located between the two main wiring areas 11 .
[0023] In some embodiments, there are multiple main line areas 12, main line areas 11, and spacing areas 13. Correspondingly, there are multiple strip-shaped flexible copper-clad tapes 20 and they correspond one-to-one with the spacing areas 13, which is convenient for adapting to various needs and has strong production flexibility.
[0024] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.
[0025] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A composite flexible circuit board, characterized in that: include: A single-layer flexible circuit board (10), a strip-shaped flexible copper-clad tape (20) and a facial mask (30), wherein the circuit of the single-layer flexible circuit board (10) comprises a main circuit area (12), a main conductor area (11) and a spacing area (13), wherein the main circuit area (12) is used for mounting LED lamp beads / LED chips, resistors, and IC electronic components, and the main conductor area (11) is used for connecting an external power supply, and the spacing area (13) is provided between the main circuit area (12) and the main conductor area (11), and the spacing area (13) comprises a plurality of thin wires (14) connecting the main circuit area (12) and the main conductor area (11); The strip-shaped flexible copper-clad tape (20) is covered on the spacing area (13) to form a composite circuit board, the copper surface of the strip-shaped flexible copper-clad tape (20) faces upward, and the mask is covered on the composite circuit board.
2. The composite flexible circuit board according to claim 1, characterized in that: The strip-shaped flexible copper-clad tape (20) is cut from a copper-clad laminate whose base film is a PI film or a PET film.
3. The composite flexible circuit board according to claim 1, characterized in that: The strip-shaped flexible copper-clad tape (20) is formed by laminating a long strip-shaped PI film or PET film to a long strip-shaped copper foil of the same width by glue.
4. The composite flexible circuit board according to claim 1, characterized in that: The single-layer flexible circuit board (10) is provided with two main wiring areas (11), and the main wiring area (12) and the spacing area (13) are both located between the two main wiring areas (11).
5. The composite flexible circuit board according to claim 1, characterized in that: There are a plurality of main line areas (12), a plurality of main line areas (11) and a plurality of spacing areas (13), and correspondingly, there are a plurality of strip-shaped flexible copper-clad tapes (20) which are bonded to the spacing areas (13) in a one-to-one correspondence.
6. The composite flexible circuit board according to claim 1, characterized in that: The mask is solder resist ink or a covering film.