Flexible circuit board, flexible LED lamp bar and manufacturing method of flexible LED lamp bar

Abstract

The invention discloses a flexible circuit board, a flexible LED lamp bar and a manufacturing method of the flexible LED lamp bar. The flexible circuit board comprises a first insulation layer, a second insulation layer and a circuit layer. The first insulation layer and the second insulation layer are attached to the two sides of the circuit layer respectively. The first insulation layer and the second insulation layer are respectively provided with a folding portion in the length direction. The folding portion of the first insulation layer corresponds to the folding portion of the second insulation layer in position. The circuit layer comprises a set of power lines and at least one light source line. The light source lines and the power lines are arranged on the two sides of the folding portions in a separable mode. The width of the folded flexible circuit board is smaller, so that more occasions where the flexible circuit board with the smaller width is needed are met, and the power lines and the light source lines are not bent when the flexible circuit board is folded. Due to the existence of the folding portions, folding face layers of the power lines and folding face layers of the light source lines can be prevented from tilting up along the folding portions, the folding face layers of the power lines and the folding face layers of the light source lines are easily attached together, and the wrinkling phenomenon is reduced.

Description

technical field [0001] The invention relates to the technical field of lighting devices, in particular to a flexible circuit board, a flexible LED light bar and a manufacturing method thereof. Background technique [0002] Because the flexible circuit board can be bent, it is suitable for some occasions that need to bend the circuit board. The flexible LED light bar using the flexible circuit board can produce a long strip of line light source after being energized, so it can be widely used for decoration in various occasions. Or lighting, such as architectural outlines, modeling signs, showcase lighting, etc. [0003] In the traditional flexible circuit board, a plurality of LEDs are welded on the strip-shaped flat flexible circuit board to form a strip-shaped LED light source, and then an insulating layer is coated on the periphery of the strip-shaped LED light source. line light source. The flexible circuit board includes conductive copper foil and insulating film. The ...

AI Technical Summary

Problems solved by technology

Because the flexible LED strip light has high requirements on width, the narrower the width, the softer it is, and the easier it is to install or shape. However, the wiring lines and power lines in the traditional flexible circuit board are set on the same plane, so the width is very wide. ; There are also wiring lines and power lines on different levels to reduce the width, but this structure has many defects in production, such as the need to stack many layers, more complex steps in the process, and more alignment of each layer. Trouble, low yield, etc.

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