Flexible circuit board and display device

Abstract

The present invention provides a flexible circuit board and a display device. The flexible circuit board comprises a pad area and copper foil areas at both sides. Each copper foil area comprises two subsidiary copper foil areas and an alignment mark area, each alignment mark area comprises an alignment mark and a connecting structure, and each connecting structure electrically connects subsidiarycopper foils of the two corresponding subsidiary copper foil areas. The Orthographic projections of the alignment mark of each alignment mark area and the corresponding connecting structure on the flexible circuit board are not overlapped. The technical scheme can improve the welding precision of the flexible circuit board and other components and keep the integrity of the electrical connection ofthe copper foils, so that electrostatic interference signals and electromagnetic interference signals produced in the installing or working process of the flexible circuit board are timely conductedinto a grounding wire and eliminated, the problem that the interference signals affect the normal operation of the other components of the flexible circuit board or signal lines is avoided, and thus the signal transmission quality of the flexible circuit board is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible circuit board and a display device. Background technique [0002] Flexible circuit boards are widely used in the field of display technology because they can be bent, folded, and flexibly arranged according to the installation space. With the development of electronic products in the direction of lighter, smaller and thinner, and the complexity of product functions, higher requirements are placed on the accuracy of soldering other devices on flexible circuit boards. [0003] The flexible circuit board is usually provided with pads for welding with other circuit boards as connection ports. During the welding process, it is necessary to weld according to the alignment marks. However, due to the problem of alignment accuracy, flexible circuit boards and other circuit boards are prone to alignment deviation, resulting in poor soldering and reduced soldering yield. [0...

AI Technical Summary

Problems solved by technology

However, due to the problem of alignment accuracy, flexible circuit boards and other circuit boards are prone to alignment deviation, resulting in poor soldering and reduced soldering yield

[0004] In addition, flexible circuit boards are generally made of base film made of polyimide or polyester film, copper foil and cover film through bonding glue, and some alignment marks are usually removed during the preparation process. Divide the copper foils that were originally connected together into copper foils that are not connected to each other, thereby destroying the integrity of the copper foil connection and reducing the anti-electromagnetic interference ability of the flexible circuit board

The copper foil of the flexible circuit board is usually grounded, and the destruction of the electrical connection integrity of the copper foil will further reduce the anti-static interference ability of the flexible circuit board, thereby affecting the normal operation of the signal lines and wiring circuits on the flexible circuit board

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