Circuit board and display device

Abstract

The invention discloses a circuit board and a display device. The circuit board comprises at least one flexible base layer and a metal circuit layer which are arranged in a laminated mode, rigid areas and a flexible area, wherein the rigid areas are located on the two sides of the flexible area, rigid base materials are arranged on the rigid areas, at least part of the flexible area is arranged to be of a wave structure to form a bending area, and the wave structure extends towards the rigid area. According to the embodiment of the invention, the integrated board with the soft and hard structure is arranged, and at least part of the flexible area is arranged to be of the wave structure to form the bending area, so that the circuit board can achieve the accumulation and release of stress through tiny tensile compression deformation by utilizing the wave structure similar to a spring in the folding, bending or flattening process, and high bending times of the circuit board in the bending area can be ensured; and the soft and hard integrated structure can prevent the soft board from being damaged due to pulling during assembling, bending and pulling, so that the reliability of the circuit board in a folded product is improved.

Description

technical field [0001] The present invention generally relates to the field of display technology, in particular to a circuit board and a display device. Background technique [0002] Printed Circuit Board (PCB), as a collection of various electronic components, is widely used in large-size display products, especially in the display of folding notebook computers (Note Book, NB). The popularity of folding displays and the demand for large-size display screens have put forward new requirements for PCB boards. If the PCB board is required to meet the work requirements, it can also be folded and reach up to 100,000 or more than 200,000 times of bending times. . [0003] At present, a PCB board is bonded on the two display surfaces of the folding NB, and a flexible connector (Bridge) is connected between the two PCB boards through a connector (Connector) to realize the intercommunication of circuit information on the PCB board. [0004] For the above-mentioned structure, durin...

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Problems solved by technology

[0004] For the above structure, during the manufacturing process, each process inspection requires plugging and unplugging of the Bridge and Connector, which may easily cause damage near the plugging and unplugging positions of the Bridge and Connector.

In addition, since the arc length of the outer film layer is greater than the arc length of the inner film layer in the bent state, there is an arc or a bulging state on the Bridge in the flattened state. At the same time, after bending along the center line for many times, the Bridge The state of bending and flattening is constantly changing, so that the stress is continuously released and accumulated, which can easily cause Bridge damage or Connector fall off

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