Flexible circuit board for illumination

Abstract

The utility model relates to the technical field of flexible circuit boards, and discloses a flexible circuit board for illumination. The flexible circuit board used for illumination comprises a basic structure assembly, a lower layer surface assembly is installed at the lower end of the basic structure assembly, a first conductor is installed at the upper end of the lower layer surface assembly, a reinforcing layer is installed at the upper end of the first conductor, an electromagnetic protective film is installed at the upper end of the reinforcing layer, and the electromagnetic protective film is installed at the lower end of the lower layer surface assembly. A first waterproof layer is mounted at the upper end of the electromagnetic protective film, an upper layer surface assembly is connected to the upper end of the basic structure assembly, a second waterproof layer is mounted at the upper end of the upper layer surface assembly, an adhesive layer is mounted at the upper end of the second waterproof layer, and a reinforcing layer is mounted at the upper end of the adhesive layer; according to the flexible circuit board, the following influence on the reliability and the stability of the circuit board caused by layering of the circuit board and breakage of the copper foil at the upper end of the flexible circuit board due to long-time bending of the flexible circuit board during long-time use of a traditional flexible circuit board can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board technology, specifically a flexible circuit board for lighting applications. Background Technology

[0002] With the increasing use of high-power light-emitting diodes in automotive lights and other applications, the aluminum substrate of rigid circuit boards used in the past had excellent heat dissipation, but poor assembly consistency and reliability, as well as requiring a large assembly space. Therefore, the use of flexible circuit boards to replace the original aluminum-based rigid circuit boards has become a new direction for the development of the electronics, electrical components and circuit board industries.

[0003] The existing Chinese utility model patent with publication number CN205093038U discloses a flexible circuit board for LED lighting products, comprising a solder resist layer, a copper foil layer, an upper hot-press adhesive layer, a polyimide layer, a lower hot-press adhesive layer, and an aluminum plate. The copper foil layer, the upper hot-press adhesive layer, and the polyimide layer are laminated to form a single-sided substrate for FPC. The aluminum plate is laminated to the single-sided substrate for FPC via the lower hot-press adhesive layer to form an FPC substrate. Positive and negative electrode connection lines are etched on both sides of the FPC substrate, and both the positive and negative electrode connection lines are flexible and foldable. This utility model is based on flexible circuit board processing technology. It uses a double-sided etching process to simultaneously etch copper foil and aluminum reinforcement to form a circuit board. It also reserves external wiring required for assembly and soldering on the circuit board and prints white solder resist ink on the circuit board surface, forming a flexible circuit board for LED lighting products with excellent flexibility and heat dissipation, which can be directly soldered using the reserved connection lines of the FPC.

[0004] Based on the above patent searches and the findings of existing technology, flexible circuit boards have been gradually applied in various electronic devices. However, when traditional flexible circuit boards are used for extended periods, the bending process can cause delamination and copper foil breakage at the top, which can affect the reliability and stability of the circuit board. Furthermore, the lack of internal waterproofing can also lead to further damage to the flexible circuit board, all of which affect the usability of the device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a flexible circuit board for lighting applications. It effectively prevents traditional flexible circuit boards from delaminating and breaking copper foil at the top of the board due to prolonged bending during use, which would otherwise affect the reliability and stability of the circuit board.

[0007] Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a flexible circuit board for lighting, comprising a basic structure component, wherein a lower layer component is installed at the lower end of the basic structure component to facilitate the use of subsequent devices and to reinforce the upper end of a first conductor through a reinforcing layer, and an upper layer component is connected at the upper end of the basic structure component to facilitate the reinforcement of the upper end of a second conductor through a reinforcing layer.

[0009] The lower layer component has a first conductor installed at its upper end, a reinforcing layer installed at its upper end, an electromagnetic protection film installed at its upper end, and a first waterproof layer installed at its upper end. The first waterproof layer is installed at the upper end of the electromagnetic protection film to facilitate subsequent waterproofing of the entire component.

[0010] The upper layer component has a second waterproof layer installed on its upper end, and an adhesive layer is installed on the upper end of the second waterproof layer. A reinforcing layer is installed on the upper end of the adhesive layer, and a second conductor is installed on the upper end of the reinforcing layer. The second conductor is a copper foil structure, which facilitates the subsequent increase of the overall conductivity.

[0011] As a preferred embodiment of this utility model, a first adhesive layer is installed on the upper end of the basic structure component, and a substrate film is installed on the upper end of the first adhesive layer. A second adhesive layer is installed on the upper end of the substrate film. The two adhesive layers are installed on the upper end of the substrate film, which facilitates the subsequent connection and installation of the upper layer components.

[0012] As a preferred technical solution of this utility model, a protective layer is installed on the upper end of the lower layer component. The protective layer protects the first conductor at the upper end, and the protective layer is a polyester film, which facilitates the improvement of wear resistance and bending resistance.

[0013] As a preferred embodiment of this utility model, an insulating film is installed on the upper end of the upper layer component, and a protective film is installed on the upper end of the insulating film. The protective film is installed on the upper end of the insulating film, which facilitates the subsequent improvement of wear resistance and bending resistance.

[0014] As a preferred embodiment of this utility model, the lower layer component is installed at the lower end of the first adhesive layer in the base structure component, and the upper layer component is installed at the upper end of the second adhesive layer in the base structure component.

[0015] As a preferred embodiment of this utility model, the upper end of the first adhesive layer is fitted with an adhesive, and the first adhesive layer and the second adhesive layer have the same structure.

[0016] As a preferred embodiment of this utility model, the upper end of the first conductor is copper foil, the upper end of the reinforcing layer is fiberglass cloth, the upper end of the protective layer is polyester film, and waterproof adhesive is installed on the upper end of the first waterproof layer.

[0017] As a preferred embodiment of this utility model, the second waterproof layer has the same structure as the first waterproof layer, the upper end of the adhesive layer is a pure adhesive structure, the upper end of the reinforcing layer is an epoxy resin adhesive, and the second conductor has the same structure as the first conductor.

[0018] Compared with the prior art, the present invention provides a flexible circuit board for lighting applications with the following advantages:

[0019] 1. This utility model, through the configuration of the overall device, includes a first conductor installed in the lower layer component. The first conductor is a copper foil structure. A reinforcing layer is installed at the upper end of the first conductor. The upper end of the reinforcing layer is made of fiberglass cloth. Fiberglass cloth is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. A first waterproof layer is installed at the upper end. The waterproof layer is made of polyimide, which effectively prevents moisture intrusion. A reinforcing layer is installed in the upper layer component. The reinforcing layer is made of epoxy resin. Epoxy resin typically has the characteristics of high bonding strength, chemical resistance, and good electrical insulation. The upper and lower layer components are combined to form a double-sided structure, effectively preventing the delamination and copper foil breakage that can occur on the upper part of traditional flexible circuit boards during long-term use due to prolonged bending. This would affect the reliability and stability of the circuit board and prevent the internal waterproofing function from being compromised, thus causing subsequent damage to the flexible circuit board. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the basic structural components of this utility model;

[0022] Figure 3 This is a schematic diagram of the lower layer components of the present invention.

[0023] Figure 4 This is a schematic diagram of the upper layer components of the present invention.

[0024] Among them: 1. Basic structural components; 101. First adhesive layer; 102. Substrate film; 103. Second adhesive layer; 2. Lower layer components; 201. Protective layer; 202. First conductor; 203. Reinforcing layer; 204. Electromagnetic protection film; 205. First waterproof layer; 3. Upper layer components; 301. Second waterproof layer; 302. Adhesive layer; 303. Reinforcing layer; 304. Second conductor; 305. Insulating film; 306. Protective film. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1 - Figure 4In this embodiment, a flexible circuit board for lighting includes: a base structure component 1, a lower layer component 2 mounted on the lower end of the base structure component 1, a first conductor 202 mounted on the upper end of the lower layer component 2, a reinforcing layer 203 mounted on the upper end of the first conductor 202, an electromagnetic protection film 204 mounted on the upper end of the reinforcing layer 203, a first waterproof layer 205 mounted on the upper end of the electromagnetic protection film 204, an upper layer component 3 connected to the upper end of the base structure component 1, a second waterproof layer 301 mounted on the upper end of the upper layer component 3, an adhesive layer 302 mounted on the upper end of the second waterproof layer 301, a reinforcing layer 303 mounted on the upper end of the adhesive layer 302, a second conductor 304 mounted on the upper end of the reinforcing layer 303, the lower layer component 2 mounted on the lower end of the first adhesive layer 101 in the base structure component 1, and the upper layer component 3 mounted on the upper end of the second adhesive layer 103 in the base structure component 1.

[0029] With the above structure: the basic structure component 1 facilitates the installation and connection of the upper structure, and facilitates the subsequent connection of the upper components through the adhesive layer; the lower layer component 2 facilitates the use of the subsequent device, and the upper end of the first conductor 202 is reinforced by the reinforcing layer 203; the upper layer component 3 facilitates the reinforcement of the upper end of the second conductor 304 through the reinforcing layer 303.

[0030] Please see Figure 1 - Figure 4 The upper end of the basic structure component 1 is provided with a first adhesive layer 101, and a substrate film 102 is provided on the upper end of the first adhesive layer 101. A second adhesive layer 103 is provided on the upper end of the substrate film 102. An adhesive is provided on the upper end of the first adhesive layer 101. The first adhesive layer 101 and the second adhesive layer 103 have the same structure.

[0031] With the above structure: the lower layer component 2 is connected and installed by installing the first adhesive layer 101, which facilitates subsequent use. The substrate film 102 is installed on the upper end of the first adhesive layer 101. This material is lightweight, thin, and can withstand dynamic flexural motion. The second adhesive layer 103 is installed on the upper end of the substrate film 102, which facilitates the subsequent connection and installation of the upper layer component 3.

[0032] Please see Figure 1 - Figure 4 The upper end of the lower layer component 2 is equipped with a protective layer 201, the upper end of the first conductor 202 is copper foil, the upper end of the reinforcing layer 203 is fiberglass cloth, the upper end of the protective layer 201 is polyester film, and the upper end of the first waterproof layer 205 is equipped with waterproof adhesive.

[0033] The above structure provides protection for the upper first conductor 202 by installing a protective layer 201. The protective layer 201 is a polyester film, which improves wear resistance and bending resistance. The first conductor 202 is installed on the upper end of the protective layer 201 and is made of copper foil. A reinforcing layer 203 is installed on the upper end of the first conductor 202. The upper end of the reinforcing layer 203 is made of glass fiber. Glass fiber cloth is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. An electromagnetic protection film 204 is installed on the upper end of the reinforcing layer 203 to facilitate subsequent protection of electronic components from electromagnetic interference. A first waterproof layer 205 is installed on the upper end of the electromagnetic protection film 204 to facilitate subsequent waterproofing of the entire structure.

[0034] Please see Figure 1 - Figure 4 An insulating film 305 is installed on the upper end of the upper layer component 3, and a protective film 306 is installed on the upper end of the insulating film 305. The second waterproof layer 301 has the same structure as the first waterproof layer 205. The upper end of the adhesive layer 302 is a pure adhesive structure. The upper end of the reinforcing layer 303 is an epoxy resin adhesive. The second conductor 304 has the same structure as the first conductor 202.

[0035] The above structure provides waterproofing for the entire structure through the installation of the second waterproof layer 301. The adhesive layer 302 is a pure adhesive structure, which facilitates subsequent bonding between layers. The reinforcing layer 303 is an epoxy resin adhesive, which typically has the characteristics of high bonding strength, chemical resistance, and good electrical insulation. The second conductor 304 is a copper foil structure, which facilitates subsequent increase in overall conductivity. The insulating film 305 is installed on the upper end of the second conductor 304, which facilitates subsequent protection of the circuit from external interference. The protective film 306 is installed on the upper end of the insulating film 305, which facilitates subsequent improvement in wear resistance and bending resistance.

[0036] In use, firstly, to waterproof and reinforce the original flexible circuit board, the internal structure is modified. A first conductor 202, which is a copper foil structure, is installed in the lower layer component 2. A reinforcing layer 203 is installed on the upper end of the first conductor 202. The upper end of the reinforcing layer 203 is made of fiberglass cloth. Fiberglass cloth is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The upper end of the reinforcing layer 203 is equipped with a first... A waterproof layer 205 is made of polyimide, which effectively prevents moisture from entering. A second conductor 304 is installed in the upper component 3. A reinforcing layer 303 is installed at the lower end of the second conductor 304. The reinforcing layer 303 is made of epoxy resin. Epoxy resin usually has the characteristics of high bonding strength, chemical resistance and good electrical insulation. An insulating film 305 is installed at the upper end of the second conductor 304. The insulating film 305 facilitates the subsequent improvement of the internal structure's wear resistance and bending resistance.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board for lighting applications, characterized in that, The system includes a basic structural component (1), a lower layer component (2) installed at the lower end of the basic structural component (1), a first conductor (202) installed at the upper end of the lower layer component (2), a reinforcing layer (203) installed at the upper end of the first conductor (202), an electromagnetic protection film (204) installed at the upper end of the reinforcing layer (203), a first waterproof layer (205) installed at the upper end of the electromagnetic protection film (204), an upper layer component (3) connected to the upper end of the basic structural component (1), a second waterproof layer (301) installed at the upper end of the upper layer component (3), an adhesive layer (302) installed at the upper end of the second waterproof layer (301), a reinforcing layer (303) installed at the upper end of the adhesive layer (302), and a second conductor (304) installed at the upper end of the reinforcing layer (303).

2. The flexible circuit board for lighting according to claim 1, characterized in that, The upper end of the basic structure component (1) is provided with a first adhesive layer (101), and a substrate film (102) is provided on the upper end of the first adhesive layer (101), and a second adhesive layer (103) is provided on the upper end of the substrate film (102).

3. The flexible circuit board for lighting according to claim 1, characterized in that, A protective layer (201) is installed on the upper end of the lower layer component (2).

4. A flexible circuit board for lighting according to claim 1, characterized in that, An insulating film (305) is installed on the upper end of the upper layer component (3), and a protective film (306) is installed on the upper end of the insulating film (305).

5. A flexible circuit board for lighting according to claim 1, characterized in that, The lower layer component (2) is installed at the lower end of the first adhesive layer (101) in the base structure component (1), and the upper layer component (3) is installed at the upper end of the second adhesive layer (103) in the base structure component (1).

6. A flexible circuit board for lighting according to claim 2, characterized in that, The upper end of the first adhesive layer (101) is fitted with an adhesive, and the first adhesive layer (101) has the same structure as the second adhesive layer (103).

7. A flexible circuit board for lighting according to claim 3, characterized in that, The upper end of the first conductor (202) is copper foil, the upper end of the reinforcing layer (203) is fiberglass cloth, the upper end of the protective layer (201) is polyester film, and the upper end of the first waterproof layer (205) is fitted with waterproof adhesive.

8. A flexible circuit board for lighting according to claim 4, characterized in that, The second waterproof layer (301) has the same structure as the first waterproof layer (205). The upper end of the adhesive layer (302) is a pure adhesive structure, and the upper end of the reinforcing layer (303) is an epoxy resin adhesive. The second conductor (304) has the same structure as the first conductor (202).

Images