CN202551491U

CN202551491U - Flexible circuit board for manufacturing continuous LED light strip

Info

Publication number: CN202551491U
Application number: CN201220112654XU
Authority: CN
Inventors: 楼宇星; 吕亚; 楼帅
Original assignee: SHENZHEN CITY THREE GOLDS PRECISE CIRCUIT TECHNOLOGY Co Ltd
Current assignee: SHENZHEN CITY THREE GOLDS PRECISE CIRCUIT TECHNOLOGY Co Ltd
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2012-11-21
Anticipated expiration: 2022-03-23

Abstract

A flexible circuit board for a plasma display comprises a film substrate, wherein a substrate connecting part is arranged at one end of the film substrate; a signal inputting part is arranged at the other end of the film substrate; the film substrate connecting part and the signal inputting part consist of copper electrode columns; the signal inputting part applies a driving data signal to drive a driving IC (integrated circuit) of a plasma display panel; each electrode of the signal inputting part has a relatively wide terminal and has an irregular polygon shape. By reducing the widths of the other parts except the terminal, an equivalent effect with actual increase of the electrode spacing can be achieved, and the width of the terminal is kept equal to the conventional width, so that the connecting contact area with a circuit printing substrate electrode can be ensured.

Description

A kind of FPC that is used to make continuous LED lamp bar

Technical field

The utility model relates to the FPC field, especially relates to a kind of FPC that is used to make continuous LED lamp bar.

Background technology

Nowadays, the application of flexible print circuit board more and more widely particularly can be used to make LED lamp band, neon light or the like.In existing double-sided flexible printed circuit board, receive the restriction of the factors such as process equipment, growth technique cycle, process technology, cost of existing double-sided flexible printed circuit board, the continuous development length of flexible print circuit board finished product is between 0.5～1m.When LED lamp band is longer if desired; Existing flexible circuitry panel products does not reach such length requirement; Thereby have only the application that realizes longer LED lamp band through connection, but the various problems that the connected mode of existing FPC exists to FPC.Therefore, need a kind of FPC that does not need to connect to design, avoid deficiency of the prior art.

Summary of the invention

The utility model purpose provides a kind of FPC that is used to make continuous LED lamp bar.Lack, do not possess technical problems such as continuity to solve existing in prior technology LED lamp band.

For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of FPC that is used to make continuous LED lamp bar; Comprise first line layer, second line layer, insulating barrier, conductive through hole, conductive layer, led chip; Said insulating barrier is arranged between first line layer and second line layer, and wherein first line layer and second line layer are provided with a plurality of conductive through holes; The inwall of said conductive through hole is provided with conductive layer, and this conductive layer is the graphite layer; Said led chip is assemblied on first line layer through welding.

As preferably, be coated with dielectric ink or coverlay on the surface of said first line layer, wherein dielectric ink makes the circuit protection against the tide, prevents that solder shorts, coverlay from providing environmental protection and electronic isolation function.

As preferably, the conductive layer surface in the said conductive through hole is a copper facing thickening layer, and this copper facing thickening layer is through increasing the pore wall thickness of conductive through hole, thereby increases the conductive capability and the reliability of line layer.

This use is novel through increasing the length of existing double-sided flexible printed circuit board greatly; Reach and realize its successional purpose, thereby overcome the limitation of existing equipment, solved the too short deficiency of single largest production length of existing double-sided flexible printed circuit board with technology; And solved and used the technical bottleneck that this FPC LED lamp band exists at present; Thereby improved production efficiency and product reliability greatly, saved process time, reduced manufacturing cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is an A-A cutaway view Amplified image shown in Figure 1.

Embodiment

Below through embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.

Fig. 1 is the structural representation of the utility model; Fig. 2 is an A-A cutaway view Amplified image shown in Figure 1.Combine Fig. 2 to know by Fig. 1; A kind of FPC that is used to make continuous LED lamp bar; Comprise first line layer 5, second line layer 9, insulating barrier 4, conductive through hole 7, conductive layer 6, led chip 3; Said insulating barrier 4 is arranged between first line layer 5 and second line layer 9, and wherein first line layer 5 and second line layer 9 are provided with on the surface of a plurality of conductive through hole 7, the first line layers 5 and are coated with dielectric ink or coverlay; Wherein dielectric ink makes the circuit protection against the tide, prevents that solder shorts, coverlay from providing environmental protection and electronic isolation function.The inwall of said conductive through hole 7 is provided with conductive layer 6; This conductive layer 6 is the graphite layer; Conductive layer 6 surfaces in the conductive through hole 7 are a copper facing thickening layer 8, and this copper facing thickening layer 8 passes through to increase the pore wall thickness of conductive through hole 7, thereby has increased the conductive capability and the reliability of circuit 1.Led chip 3 is assemblied on first line layer 5 through welding.

The technological process of production of the utility model is:

FPC is through common line plate drilling machine, and the institute that gets out on the FPC is porose; With boring good through hole conductionization, conduction chemical industry preface comprises black hole chemical industry preface and electroless copper operation; In through hole, carry out the plating thickening of conductive layer, for example electric plated with copper; Printed wire printing ink forms line pattern Hangzhoupro erosion layer to plate, consent in printing, thus make the hole against corrosion; On FPC, cover anti-welding film of one deck or anti-solder ink; Method press mold through the roll shaft press mold; FPC behind the press mold is heating and curing; Make solder joint be difficult for oxidation through surface treatment, when preventing at the solder joint position welding component, the bad situation of welding quality occurs; Carry out the branch cutting process at last to form the continuous two-sided flexible print circuit board of wall scroll.

The utility model can reach indefinite length, and this is that existing flexible circuitry board production technology institute is inaccessiable.According to different application scenarios, different according to the preferred length of continuous FPC like 1～10m, 20～50m, need more than 100 meters, even reach about 200 meters more than 50 meters in some applications.This also means; Can realize the LED lamp bar product of this FPC of employing of same length, thereby overcome the short limitation of length of the LED lamp carries product of existing employing flexible print circuit board, no longer need carry out machinery and join with circuit and join flexible print circuit board; Thereby it is long to have overcome growth cycle; Production efficiency is not high, the defective that production reliability reduces, and therefore reduced and join the cost of labor that is spent.

Claims

1. FPC that is used to make continuous LED lamp bar; Comprise first line layer, second line layer, insulating barrier, conductive through hole, conductive layer, led chip; It is characterized in that; Said insulating barrier is arranged between first line layer and second line layer, and wherein first line layer and second line layer are provided with a plurality of conductive through holes; The inwall of said conductive through hole is provided with conductive layer, and this conductive layer is the graphite layer; Said led chip is assemblied on first line layer through welding.

2. a kind of FPC that is used to make continuous LED lamp bar according to claim 1; It is characterized in that; Be coated with dielectric ink or coverlay on the surface of said first line layer; Wherein dielectric ink makes the circuit protection against the tide, prevents that solder shorts, coverlay from providing environmental protection and electronic isolation function.

3. a kind of FPC that is used to make continuous LED lamp bar according to claim 1; It is characterized in that; Conductive layer surface in the said conductive through hole is a copper facing thickening layer, and this copper facing thickening layer increases the conductive capability and the reliability of line layer through increasing the pore wall thickness of conductive through hole.