Circuit board structure and display device

CN116194871BActive Publication Date: 2026-07-07BOE TECHNOLOGY GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BOE TECHNOLOGY GROUP CO LTD
Filing Date
2021-09-27
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

When combining double-layer FPC with multi-layer FPC, the electromagnetic shielding layer is prone to breakage at the connection point, resulting in a reduction in the electromagnetic shielding performance of electronic products.

Method used

A filler portion is filled at the circuit board connection, with its extension direction aligned with the corner portion, and the thickness of the cross section increases as the distance from the second circuit board decreases, forming a transition bridge. An electromagnetic shielding layer covers the circuit board and the filler portion, providing support to prevent breakage.

Benefits of technology

It improves electromagnetic shielding performance, prevents the electromagnetic shielding layer from breaking due to height differences, and ensures the electromagnetic shielding effect.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN116194871B_ABST
    Figure CN116194871B_ABST
Patent Text Reader

Abstract

A circuit board structure and a display device, the circuit board structure comprising a first circuit board (1), a second circuit board (2), a filling part (4) and an electromagnetic shielding layer (5); the thickness of the second circuit board (2) is greater than the thickness of the first circuit board (1), the connection part of the second circuit board (2) and the first circuit board (1) forms at least one corner part (3), the connection part of the first circuit board (1) and the second circuit board (2) forms a connection line, the connection line is located in the corner part (3); the filling part (4) is filled in the corner part (3), the extension direction of the filling part (4) is consistent with the extension direction of the corner part (3), the extension direction is consistent with the direction of the connection line, the thickness of the cross section of the filling part (4) perpendicular to the extension direction increases with the decrease of the distance from the second circuit board (2); the electromagnetic shielding layer (5) covers the first circuit board (1), the second circuit board (2) and the filling part (4). The filling part (4) can avoid the fracture of the electromagnetic shielding layer (5) due to the height difference.
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