FPC windowing structure for anti-reinforcement drop and LED lamp with the same
Patent Information
- Application Number
- CN202521762466.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-08-19
AI Technical Summary
[0013]通过将所述疏水性薄膜层设置有开窗区以及所述开窗区的面积大于所述FPC补强的背胶区，以保证所述FPC补强的背胶区能够贴附于所述FPC本体的表面，即避免将所述FPC补强贴附于所述疏水性薄膜层的疏水面并保证良好的结合力，如此能够保证FPC补强具有可靠的附着力，且有效防止FPC补强脱落。
Smart Images
Figure CN224790832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flexible printed circuit board technology, and in particular to an FPC window structure for preventing reinforcement detachment and an FPC for LED lights. Background Technology
[0002] FPC, short for Flexible Printed Circuit, is a type of flexible printed circuit board made of polyimide or polyester film as a substrate, and is widely used in electronic products.
[0003] LED lights on the market use white film (i.e. white cover film) to enhance brightness through FPC. However, because the outer surface of the white film is coated with hydrophobic white oil, the adhesion of FPC reinforcement on it is insufficient, and FPC reinforcement is prone to falling off. At the same time, white oil will also stick to the adhesive backing of FPC reinforcement. Utility Model Content
[0004] To address the aforementioned problems, this invention provides an FPC window structure for preventing reinforcement detachment and an FPC for LED lights, ensuring reliable adhesion of the FPC reinforcement.
[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0006] This utility model provides an FPC window structure for preventing reinforcement detachment, including an FPC body, a hydrophobic film layer attached to one side of the FPC body, and an FPC reinforcement disposed on the side of the hydrophobic film layer away from the FPC body. The hydrophobic film layer is provided with a window area, and the area of the window area is larger than the adhesive backing area of the FPC reinforcement.
[0007] Furthermore, the FPC reinforcement is used to reinforce the handle.
[0008] Furthermore, the reinforcing handle has an adhesive portion and a handle portion, and only the adhesive portion has the adhesive backing area; the adhesive backing area is at least 1.0 mm away from the outer edge of the handle portion and the inner edge of the window area.
[0009] Furthermore, the outer edges of the adhesive backing area away from the handle are at least 0.8 mm apart from the inner edge of the window area.
[0010] Furthermore, the hydrophobic film layer is a white film or an EMI film, and a hydrophobic ink layer is provided on the outer side of the hydrophobic film layer away from the FPC body, and the outer surface of the ink layer is the hydrophobic surface of the hydrophobic film layer.
[0011] This utility model provides an FPC for LED lights, which includes at least the aforementioned FPC window structure for preventing reinforcement detachment.
[0012] The technical solution provided by this utility model has the following beneficial effects:
[0013] By providing a windowed area in the hydrophobic film layer, and ensuring that the area of the windowed area is larger than the adhesive backing area of the FPC reinforcement, it is guaranteed that the adhesive backing area of the FPC reinforcement can adhere to the surface of the FPC body. This avoids attaching the FPC reinforcement to the hydrophobic surface of the hydrophobic film layer and ensures good adhesion. This ensures that the FPC reinforcement has reliable adhesion and effectively prevents the FPC reinforcement from falling off. Attached Figure Description
[0014] Figure 1 The diagram shown is a schematic of the FPC window structure used to prevent reinforcement detachment in Embodiment 1. Detailed Implementation
[0015] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.
[0017] Example 1
[0018] Reference Figure 1 Example 1 provides an FPC window structure (hereinafter referred to as window structure) for preventing reinforcement detachment, as part of the FPC of an LED light.
[0019] The window structure of this embodiment includes an FPC body 1, a hydrophobic film layer attached to the outer surface of the FPC body 1, and an FPC reinforcement 2 disposed on the side of the hydrophobic film layer away from the FPC body 1. The hydrophobic film layer is provided with a hollowed-out window area 3, and the area of the window area 3 is larger than the adhesive backing area 211 of the FPC reinforcement 2.
[0020] In this embodiment, the FPC reinforcement 2 is a reinforcing handle, and the specific hydrophobic film layer is a white film (i.e., a white cover film or black and white film used for LED brightness enhancement). The hydrophobic film layer is provided with a hydrophobic ink layer (such as a white oil layer) on the outer surface of the FPC body 1 away from the outer surface of the hydrophobic film layer. At this time, the outer surface of the ink layer is the hydrophobic surface of the hydrophobic film layer, and the adhesion between the adhesive backing of the FPC reinforcement 2 and the hydrophobic surface is poor.
[0021] More specifically, the FPC reinforcement 2 has an adhesive portion 21 and a handle portion 22. Only the adhesive portion 21 has an adhesive backing area 211. The distance L1 between the outer edge of the adhesive backing area 211 near the handle portion 22 and the inner edge of the window area 3 is at least 1.0 mm, and the distance L2 between each outer edge of the adhesive backing area 211 away from the handle portion 22 and the inner edge of the window area 3 is at least 0.8 mm.
[0022] By providing a windowed area 3 in the hydrophobic film layer and ensuring that the area of the windowed area 3 is larger than the adhesive backing area 211 of the FPC reinforcement 2, it is ensured that the adhesive backing area 211 of the FPC reinforcement 2 can be directly attached to the surface of the FPC body 1. This avoids attaching the FPC reinforcement 2 to the hydrophobic surface of the hydrophobic film layer and ensures good adhesion. This ensures that the FPC reinforcement 2 has reliable adhesion, effectively prevents the FPC reinforcement 2 from falling off, and avoids white oil adhering to the adhesive backing of the FPC reinforcement 2.
[0023] Of course, in other embodiments, the hydrophobic thin film layer may also be an EMI film, and the outer side of the EMI film is coated with a hydrophobic ink layer.
[0024] Example 2
[0025] Example 2 provides an FPC for an LED lamp, which includes at least the FPC window structure for preventing reinforcement detachment from Example 1.
[0026] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.
Claims
1. An FPC window structure for preventing reinforcement detachment, comprising an FPC body, a hydrophobic thin film layer attached to one side of the FPC body, and an FPC reinforcement disposed on the side of the hydrophobic thin film layer opposite to the FPC body, characterized in that: The hydrophobic film layer has a windowed area, and the area of the windowed area is larger than the adhesive backing area reinforced by the FPC.
2. The FPC window structure for preventing reinforcement detachment according to claim 1, characterized in that: The FPC reinforcement is used to reinforce the handle.
3. The FPC window structure for preventing reinforcement detachment according to claim 2, characterized in that: The reinforcing handle has an adhesive portion and a handle portion, and only the adhesive portion has the adhesive backing area; the outer edge of the adhesive backing area near the handle portion and the inner edge of the window area are at least 1.0 mm apart.
4. The FPC window structure for resisting reinforcement detachment according to claim 3, characterized in that: The outer edges of the adhesive backing area away from the handle are at least 0.8 mm apart from the inner edge of the window area.
5. The FPC window structure for resisting reinforcement detachment according to any one of claims 1-4, characterized in that: The hydrophobic film layer is a white film or an EMI film, and a hydrophobic ink layer is provided on the outer side of the hydrophobic film layer away from the FPC body. The outer surface of the ink layer is the hydrophobic surface of the hydrophobic film layer.
6. An FPC for an LED lamp, characterized in that: It includes at least the FPC window structure for resisting reinforcement detachment as described in any one of claims 1-5.