A high-voltage flexible circuit board and multilayer flexible circuit board

Abstract

The invention relates to the technical field of a flexible circuit board, in particular to a high-voltage flexible circuit board. The high-voltage flexible circuit board comprises an insulation base layer, wherein a first copper foil circuit layer is arranged at one side of the insulation base layer, a second copper foil circuit layer, a first PET film layer and a third copper foil circuit layer are sequentially arranged at the other side of the insulation base layer, a first through hole is formed between the first copper foil circuit layer and the insulation base layer to achieve the conduction between the first copper foil circuit layer and the second copper foil circuit layer, and a second through hole is formed among the first copper foil circuit layer, the insulation base layer, the second copper foil circuit layer and the first PET film layer to achieve the conduction between the first copper foil circuit layer and the third copper foil circuit layer. A positive electrode and a negative electrode of a traditional multi-layer circuit board are arranged at the same layer, and the widths of a positive electrode copper foil and a negative electrode copper foil are affected due to limitation of creeping distance; and the electrodes of the multi-layer circuit board are arranged at several layers, creepage between the electrodes can be prevented, the width of the circuit board is reduced to the greatest extend on the condition that the voltage drop is consistent with that of a dual-layer circuit board, and a higher cooling effect also can be achieved.

Description

technical field [0001] The utility model relates to the technical field of flexible circuit boards, in particular to a high-voltage flexible circuit board and a multilayer flexible circuit board. Background technique [0002] Flexible circuit board is referred to as "soft board", commonly known as FPC in the industry, is a printed circuit board made of flexible insulating substrates, and has many advantages that rigid printed circuit boards do not have. For example, it can be bent, bent, folded, etc. freely. The use of flexible circuit boards can greatly reduce the volume of electronic products, which is suitable for the development of electronic products in the direction of high density, miniaturization and high reliability. Therefore, flexible circuit boards have been widely used in fields or products such as aerospace, military affairs, mobile communications, laptop computers, computer peripherals, PDAs, and digital cameras. [0003] Light strips are a popular area for ...

AI Technical Summary

Problems solved by technology

The circuit board of the double-line LED high-voltage light strip adopts a double-circuit board design, which solves the shortcomings of the traditional single-sided circuit board. However, this utility model ignores a problem, and its conductor circuit is easy to break when it is used for a long time. Affected by the surrounding environment such as dust, moisture, etc., the soldering of the LED lamp is short-circuited, thereby reducing the service life

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