FPC and FPC double-sided adhesive tape integrated cutting method

Abstract

The invention provides an FPC and FPC double-sided adhesive tape integrated cutting method; the integrated cutting method comprises the following steps that: S1, a release paper on one side of an FPCdouble-sided adhesive tape is replaced with an anti-static blue PET film by a laminating machine, wherein one surface of the replaced FPC double-sided adhesive tape is the release paper, while the other surface is the anti-static blue PET film; S2, and an LED lamp is fixedly connected to the whole board of the FPC by an SMT technology; S3, one side, with the release paper, of the FPC double-sidedadhesive tape is removed, and then the side is attached to the back surface of the whole board of the FPC to enable the FPC double-sided adhesive tape to be combined with the whole board of the FPC; and S4, a product obtained in the step S3 is placed on a lower die table of an outer shape punching die, and the product obtained in the step S3 is cut by a punching cutter of the outer shape punchingdie, so as to obtain a plurality of independent FPCAs. By adoption of the method, the whole board of the FPC and the whole FPC double-sided adhesive tape are attached together firstly, and the cut FPCs do not need to be connected with each other via a connection point, so that the problems of edge tearing, burrs, salient points and the like of the FPCA can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of FPC cutting, in particular to a method for integral cutting of FPC and FPC double-sided adhesive tape. Background technique [0002] The flexible circuit board is referred to as FPC. From FPC to FPCA, it needs to go through surface mount technology SMT, attach FPC double-sided tape, and form multiple independent FPCAs after cutting. Such as figure 1 and figure 2 As shown, there are two processing methods of the existing FPCA 1. The first method is to first cut the full-page FPC 1 into multiple small FPCs by using a shape punching die, and the two adjacent small FPCs They are connected through the connection point 14, and then carry out the SMT process for each small FPC to attach the LED lamp 11, and finally attach the FPC double-sided adhesive to the back of each small FPC one by one, thereby forming a plurality of FPCA 12, Wherein the LED lamp 11 and the FPC double-sided adhesive tape are respective...

AI Technical Summary

Problems solved by technology

like figure 1 and figure 2 As shown, there are two processing methods of the existing FPCA 1. The first method is to first cut the full-page FPC 1 into multiple small FPCs by using a shape punching die, and the two adjacent small FPCs They are connected through the connection point 14, and then carry out the SMT process for each small FPC to attach the LED lamp 11, and finally attach the FPC double-sided adhesive to the back of each small FPC one by one, thereby forming a plurality of FPCA 12, Wherein the LED lamp 11 and the FPC double-sided adhesive tape are respectively located on both sides of the FPC. At this time, a plurality of FPCAs 12 are connected to each other through the connection point 14. During use, the connection point 14 between adjacent FPCAs 12 is torn so that Remove the separate FPCA 12. In this method, attaching a single FPC double-sided tape requires high operating skills for the operator, so problems such as FPC double-sided tape offset and blocking the light outlet of the LED lamp 11 are prone to occur, which in turn leads to backlighting. The finished product has problems such as dark areas and poor light beams, and the entire FPC double-sided tape is less efficient; the second method is to use a shape die-cutting die to cut out multiple independent small FPCs for the full-page FPC. , two adjacent small FPCs are connected by connection point 14, and then carry out SMT process on each small FPC to attach LED lights 11, and finally paste the full-page FPC double-sided adhesive tape made by another manufacturer. Attached to the side of the full-page FPC 1 without LED lights 11, and then form a plurality of small FPCAs 12 connected to each other. When in use, tear the connection point 14 between adjacent small FPCAs 12 to take out Independent small FPCA 12, although the attachment efficiency of FPC double-sided tape has improved in this way, because the first positioning hole 13 and the second positioning hole 13 are respectively provided on the full-page FPC 1 and the FPC double-sided tape Holes, when attaching FPC double-sided tape, it is necessary to manually align the first positioning hole 13 and the second positioning hole up and down, which requires high alignment accuracy. After the cutting process, its size will change, and the change range of each version of FPC is inconsistent, so it will cause the size of the FPC double-sided tape to be inconsistent with the full-page FPC 1 when the full-page FPC double-sided tape is attached, and some FPC areas It may not be covered by the FPC double-sided tape, which will lead to the deviation of the FPC double-sided tape, resulting in dark areas and poor light beams in the finished backlight; finally, no matter in the first method or the second method, when used, tearing The final connection point 14 not only causes burrs or bumps on the edge of the FPCA 12, but also easily damages the FPCA 12 when the connection point 14 is torn, and also produces powder dust, which will enter the backlight product during the subsequent assembly process In this process, it may cause bad taste such as foreign matter and white spots in the backlight finished product, which increases the defect rate of the backlight finished product

Therefore, the existing FPC and FPC double-sided tape cutting methods have the disadvantages of low FPC double-sided tape attachment efficiency, high precision requirements, and easy attachment displacement. Bad and other problems

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