Copper foil structure for preventing dead folding of backlight FPC (Flexible Printed Circuit)
By setting a notch at the contact point between the flexible copper foil and the flexible FPC, the problem of dead bending of the backlight FPC caused by copper foil extrusion was solved, improving the yield rate and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-31
AI Technical Summary
During the production of backlight FPCs, copper foil extrusion causes the flexible FPCs to fold, resulting in low yield and high cost.
A notch is set at the contact point between the flexible copper foil and the flexible FPC to prevent the flexible FPC from breaking when workers pull the copper foil.
This improved the yield rate of backlight FPCs and reduced production costs.
Smart Images

Figure CN224068862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flexible circuit board technology, and in particular to a copper foil structure for preventing backlight FPC from folding. Background Technology
[0002] In the display module industry, copper foil is used to wrap components for shielding. However, during the copper foil application process, the copper foil often squeezes the backlight FPC, causing dead bends, resulting in low yield and increased manufacturing costs. This patent will introduce a new copper foil structure to avoid dead bends in the backlight FPC, improve product yield, and reduce manufacturing costs.
[0003] Based on this, in order to improve the yield rate of backlight FPC production, this design proposes a copper foil structure to prevent backlight FPC from being dead-folded. Utility Model Content
[0004] The purpose of this invention is to provide a copper foil structure that prevents backlight FPC from folding.
[0005] A copper foil structure for preventing backlight FPC from folding includes: a flexible FPC, a flexible copper foil, and an iron frame, wherein the flexible copper foil wraps the flexible FPC at the bottom, the iron frame is located inside the flexible copper foil, and the flexible FPC is located at the bottom of the iron frame.
[0006] Preferably, a notch is provided at the point where the flexible copper foil overlaps with the flexible FPC.
[0007] The beneficial effects of the above scheme are:
[0008] 1. This utility model exposes the FPC by creating a notch at the contact point between the copper foil and the flexible FPC, thus preventing the flexible FPC from folding when workers pull the copper foil. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the conventional structure of this utility model;
[0011] Figure 3 This is a schematic diagram illustrating a dead bend in the conventional structure of this utility model;
[0012] In the diagram: 1. Flexible FPC; 2. Flexible copper foil; 3. Iron frame. Detailed Implementation
[0013] The present invention will be further described clearly and completely below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.
[0014] according to Figure 1 As shown, a copper foil structure for preventing backlight FPC from folding includes: a flexible FPC 1, a flexible copper foil 2, and an iron frame 3, wherein the flexible copper foil 2 wraps the flexible FPC 1 at the bottom, the iron frame 3 is located inside the flexible copper foil 2, and the flexible FPC 1 is located at the lower part of the iron frame 3.
[0015] Specifically, a notch is provided at the point where the flexible copper foil 2 overlaps with the flexible FPC 1.
[0016] During operation, the traditional flexible copper foil wrapping method is as follows: Figure 2 As shown, workers often habitually pull on the flexible copper foil 2. During this pulling process, a sharp bend may occur, such as... Figure 3 As shown, poor contact may occur in defective products; improvements will be made as follows. Figure 3 As shown, a notch is set at the contact point between the flexible copper foil 2 and the flexible FPC1. By avoiding the flexible FPC, the flexible FPC1 will pass through the flexible copper foil 2, ensuring that the flexible FPC1 will not be bent, thereby improving the product yield and saving production costs.
Claims
1. A copper foil structure to prevent backlight FPC dead fold, comprising: Flexible FPC (1), flexible copper foil (2), iron frame (3), characterized in that the flexible copper foil (2) wraps the flexible FPC (1) at the bottom, the iron frame (3) is located inside the flexible copper foil (2), and the flexible FPC (1) is located at the lower part of the iron frame (3).
2. A copper foil structure to prevent backlight FPC dead fold as claimed in claim 1, wherein, The flexible copper foil (2) is provided with a notch at the coincident position of the flexible FPC (1).