Reinforcing structure for flexible circuit board

Abstract

The invention provides a flexible circuit board strengthening structure which includes a flexible circuit board and a reinforcing plate. The flexible circuit board side has at least one extended accessory, and the reinforcing plate is stacked on the surface of the extended accessory. The reinforcing plate is concave set with a gap corresponding to an extended direction position of the extended accessory for reducing centralizing between the reinforcing plate and the extended accessory of the flexible circuit board, creating cross-section shearing stress and increasing intension of the flexible circuit board.

Description

technical field [0001] The invention relates to a flexible circuit board, in particular to a flexible circuit board strengthening structure designed to reinforce the area where the flexible circuit board is likely to generate concentrated stress. Background technique [0002] With the rapid development of science and technology and the increasing quality of human life, various forms of consumer electronics products, including handheld computers, handheld game consoles, smart phones, etc. For a short time, the folding design is the mainstream in the market, and in the electronic products of the folding design, almost all the flexible printed circuit boards are used as the circuit transmission device at the folding place, because of its good flexibility, light weight and thickness Therefore, it is especially suitable for consumer electronic products that are light, thin, short, changeable in design and have movable structures. [0003] At present, manufacturers in the industr...

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Problems solved by technology

[0003] At present, manufacturers in the industry regard the backlight module (BLM) as the main core part of the product in the structural design of the back-end liquid crystal module (LCM), but in the process of transportation or assembly, parts of the product are often damaged due to careless operation , wherein, in the part of the flexible printed circuit board, a reinforcing plate is often provided at the circuit board of the light-emitting module (Light Bar) to reinforce the defect of insufficient strength of the flexible printed circuit board. However, due to the part of the flexible printed circuit board The position may need to be flexed and other settings, and the reinforcement board cannot be laid, resulting in the thickness of the reinforced circuit board and the circuit board without the reinforcement board, which often causes stress concentration at the junction, especially for T-shaped components. The most serious, in this case, shear fracture or tearing often occurs, resulting in open circuit and resulting product failure, resulting in troubles in product maintenance and an increase in the cost of after-sales service

[0004] As shown in Figure 1, the existing flexible circuit board 10 has been provided with a reinforcement board, and the flexible circuit board has an extension part 11 without a reinforcement board, when the extension part 11 or the When the flexible circuit board 10 is subjected to a lateral external force, stress concentration is likely to occur at the junction of the extension part 11 and the edge of the flexible circuit board 10 due to thickness difference, causing the flexible circuit board 10 to be damaged and fractured. Like the course of the arc (C), the result will cause the extension part 11 and the flexible circuit board 10 to break and separate completely

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