A lvds line with controllable characteristic impedance and its manufacturing method

Abstract

The invention provides a characteristic-impedence-controllable low voltage differential signaling (LVDS) wire and a manufacture method of the characteristic-impedence-controllable LVDS. The LVDS wire comprises a stranded wire flexible flat cable (FFC), a flexible printed circuit (FPC) and an electronic connector. The stranded wire FFC comprises multiple copper stranded wires, and an upper layer insulating coating membrane and a lower layer insulating coating membrane, the upper layer insulating coating membrane and the lower layer insulating coating membrane are respectively attached to the top and the bottom of the multiple copper stranded wires, two ends of the copper stranded wire are exposed outside, one exposed end of the copper stranded wire is welded to the FPC, and the other exposed end of the copper stranded wire is welded to the electronic connector. The FPC comprises an upper insulating layer, an FPC Pin foot, and a lower insulating layer. One end of the FPC is formed into a buckle structure after being processed by a punch die, and the FPC Pin foot at the other end of the FPC is welded to the copper stranded wires of the stranded wire FFC. The electronic connector comprises a connector upper cover and a connector body, the connector body is welded to the copper stranded wires of the stranded wire FFC, and the connector upper cover is buckled with the connector body. The characteristic-impedence-controllable LVDS wire has the advantages of being low in cost, high in production efficiency, long in buckling life, and controllable in characteristic-impedence. The characteristic-impedence-controllable LVDS wire meets halogen-free requirements, is good in shielding performance and has other advantages.

Description

technical field [0001] The invention relates to the technical field of signal lines, in particular to an LVDS (Low Voltage Differential Signaling, Low Voltage Differential Signaling) line with controllable characteristic impedance applied to a notebook computer and a manufacturing method thereof. Background technique [0002] At present, three kinds of LVDS lines are disclosed on the market, namely FPC (flexible printed circuit board), MIRCO COAXIAL CABLE (very thin coaxial cable MCC) and ELECTRONIC WIRE (electronic wire) are widely used in notebook computers, LCD, LED, etc. Electronic signal transmission of electronic products. [0003] The production process of the existing ELECTRONIC WIRE LVDS line is: bonding, cutting, Hot bar, dispensing and sealing, and inserting the plastic shell. This traditional structure mainly has the following disadvantages: [0004] 1. High cost: it needs to be sealed, plugged with rubber shell, etc., the process is complicated, and the labor c...

AI Technical Summary

Problems solved by technology

[0004] 1. High cost: it needs to be sealed, plugged with rubber shell, etc., the process is complicated, and the labor cost is high;

[0005] 2. Low production efficiency: complex process and low manual operation efficiency

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