TWM586504U - Tape-type flexible circuit board - Google Patents

Abstract

A tape-type flexible circuit board is used to solve the problems of abrasion and sticking of conventional flexible circuit boards during the winding process. The system comprises: at least one circuit pattern on the surface of a tape; at least one support pattern on the periphery of the circuit pattern; and the support pattern on the surface of the tape on the same side as the circuit pattern; and several protective layers, The circuit pattern and the supporting pattern are respectively covered, and the protective layer covering the supporting pattern has a plurality of openings.

Description

Tape and Reel Flexible Circuit Board

This creation relates to a substrate for mounting electronic components, particularly a tape-and-reel type flexible circuit board that prevents circuit wear and reel adhesion.

Please refer to FIG. 1. The conventional tape-and-reel flexible circuit board 9 is manufactured on a flexible base material S, and the whole roll of the flexible base material S is repeatedly unrolled, processed, and rolled. The electronic circuits are gradually formed by various processing processes. Among them, the electronic circuits are distributed in a plurality of circuit areas 91, and the unused space coefficient cut-out areas 92 between the plurality of circuit areas 91. The surface of the flexible substrate S causes the structure of the plurality of circuit regions 91 and the plurality of cut-out regions 92 to form a height difference. When the flexible circuit board 9 is rolled up and stacked layer by layer, it is easy to wind up and skew. Distorting the flexible substrate S causes the flexible circuit board 9 to be difficult to store and the electronic circuit to be easily damaged.

The conventional tape-and-reel flexible circuit board 9 can be provided with a reinforcing block at each of the cut-off areas 92, and each of the reinforcing blocks supports the flexible substrate S stacked on top and bottom, and disperses the pressure on the electronic circuit. The flexible circuit board 9 can be rolled up neatly and the abrasion of the electronic circuit can be reduced. However, each of the cut-out areas 92 is usually located on the periphery of the flexible circuit board 9 without protection processing, resulting in each of the reinforcing blocks being unrolled and rolled up. In the process, metal debris is easily generated due to friction and scratches. In this way, metal debris is entangled between the layers of the flexible circuit board 9, in addition to destroying the electronic circuit, it may also affect subsequent processing operations and even damage Processing Equipment.

In view of this, the conventional tape-and-reel flexible circuit board does still need to be improved.

In order to solve the above problems, the purpose of this creation is to provide a tape-and-reel flexible circuit board, which can avoid the generation of debris and circuit wear.

The secondary purpose of this creation is to provide a tape-and-reel flexible circuit board, which can avoid vacuum adhesion between the tapes and tapes.

Another purpose of this creation is to provide a tape-and-reel type flexible circuit board, which can improve the efficiency of processing and forming on the tape.

The use of the quantifier "a" or "an" in the elements and components recorded in the entire text of this work is only for convenience and to provide the general meaning of the scope of the work; in this work, it should be interpreted as including one or at least one, and a single The concept of plural also includes the plural case, unless it obviously means otherwise.

The tape-and-reel flexible circuit board of this creation includes: at least one circuit pattern on the surface of a tape; at least one supporting pattern on the periphery of the circuit pattern, and the supporting pattern on the side of the tape and the circuit pattern A surface; and a plurality of protective layers respectively covering the circuit pattern and the supporting pattern, and the protective layer covering the supporting pattern has a plurality of openings.

According to this, the reel-type flexible circuit board of this creation can make the reel easy to unwind and rewind through each of the supporting patterns and each of the openings in the protective layer, and has the effect of improving the efficiency of electronic circuit processing. In addition, the protective layer on the support pattern can prevent friction from generating debris, and has the effects of preventing circuit damage and improving work safety.

Wherein, the protective layer covering each of the supporting patterns is separated from the protective layer adjacent to the circuit pattern by a channel width, and the channel width is not less than 0.8 mm. In this way, the boundary between the line pattern and the support pattern can be divided, and the effect of improving the printing registration accuracy of the protective layer is improved.

The distance between two adjacent openings is a gap, and the gap is 1 to 5 mm. In this way, the system can evenly distribute the openings, and has the effect of improving the vacuum destruction effect.

The distance between the edge of the protective layer and each of the openings is a gap, and the gap is 1 to 5 mm. In this way, the openings can be distributed along the edges of the protective layer, which has the effect of improving the vacuum destruction effect.

The openings are horizontal strips, and each of the openings has a line width, and the line width is 0.8 to 1.5 mm. In this way, the plurality of openings can be arranged in accordance with the pattern and size of the protective layer, and have the effects of protecting the pattern and avoiding vacuum adhesion.

The plurality of openings are a plurality of straight long bars, and each of the openings has a line width, and the line width is 0.8 to 1.5 mm. In this way, the plurality of openings can be arranged in accordance with the pattern and size of the protective layer, and have the effects of protecting the pattern and avoiding vacuum adhesion.

The plurality of openings are distributed in rows and columns, and each of the openings has a side width of 1 to 2 mm. In this way, the plurality of openings can be arranged in accordance with the pattern and size of the protective layer, and have the effects of protecting the pattern and avoiding vacuum adhesion.

The line pattern is surrounded by a cutting line, and the support pattern is located outside the surrounding range of the cutting line. In this way, the system can be cut along the cutting line after the processing is completed, and the system has the effect of separating the unused area on the tape.

The protective layer is a solder resist paint, and the circuit pattern and the supporting pattern are conductive materials. In this way, it has the effect of increasing the protection function and improving the efficiency of processing and molding.

In order to make the above and other purposes, features, and advantages of this creation more obvious and easy to understand, the following describes the preferred embodiment of this creation in conjunction with the accompanying drawings, as follows:

Please refer to FIG. 2, which is a preferred embodiment of the creative tape-and-reel flexible circuit board, which includes at least one circuit pattern 1, at least one support pattern 2 and several protective layers 3. The circuit pattern 1 and the The support pattern 2 is located on the surface on the same side of a roll of tape T, and the support pattern 2 is located on the periphery of the line pattern 1. The protective layers 3 cover the line pattern 1 and the support pattern 2, respectively.

The circuit pattern 1 is an electronic circuit composed of a conductive material, and can be used to install and electrically connect electronic components in the electronic circuit. In addition, the circuit pattern 1 is preferably located in the center of the tape T and is cut by a cutting line. C surrounds the circuit pattern 1. After the processing and testing of the electronic circuit is completed, the circuit pattern 1 can be cut along the cutting line C, and the circuit pattern 1 can be separated from the tape T to form a flexible circuit board that can be packaged and shipped. .

Please refer to Figs. 3a, 3b and 3c. The support pattern 2 may be the same conductive material as the circuit pattern 1. The support pattern 2 is used to fill the gap left on the surface of the tape T by the circuit pattern 1. In other words, the support pattern 2 is located outside the surrounding area of the cutting line C. The support pattern 2 is a block that is not used for the finished product of the flexible circuit board. As shown in FIG. 3a, the support pattern 2 may be a plurality of long straight bars parallel to the winding direction of the reel T; as shown in FIG. 3b, the support pattern 2 may also be perpendicular to the reel T Several long straight bars in the rolling direction; as shown in FIG. 3c, the support pattern 2 may be a single pattern and a plurality of hollowed-out blocks inside it, which is not limited in this creation.

Please refer to FIG. 2, the protective layer 3 covers areas where the circuit pattern 1 does not need to be soldered and the supporting pattern 2 by printing technology, and the protective layer 3 has a function of preventing the circuit pattern 1 and the supporting pattern 2 from abrasion. The protective layer 3 is preferably a solder resist (Solder Resist). The protective layer 3 may also have the functions of moisture resistance, insulation, solder resistance, high temperature resistance, and aesthetic appearance.

Please refer to FIGS. 4 to 6, the protective layer 3 a covering each of the support patterns 2 is spaced a channel width G from the protective layer 3 b of the adjacent circuit pattern 1, and the channel width G is preferably not less than 0.8. Millimeters, and the protective layer 3a covering each of the supporting patterns 2 may also have several openings 31, each of the openings 31 is a hollowed out block on the protective layer 3a, so that a part of the supporting pattern 2 By exposing each of the openings 31 to the air, the openings 31 have the effect of destroying the vacuum. The distance between two adjacent openings 31 and the distance between the edge of the protective layer 3a and each of the openings 31 are the same. The gap P is preferably 1 to 5 mm.

As shown in FIG. 4, the plurality of openings 31 may be a plurality of horizontal strips, each of which is perpendicular to the circuit board winding direction, and each of the openings 31 has a line width W1; as shown in FIG. 5. The plurality of openings 31 may be a plurality of straight strips, each of the straight strips is parallel to the winding direction of the circuit board, and each of the openings 31 has the line width W1, and the line width W1 is preferably 0.8 to 1.5 mm. As shown in FIG. 6, the plurality of openings 31 may be distributed in a plurality of squares in rows and columns, and each of the openings 31 has a width W2 on one side, and the width W2 is preferably 1 to 2 mm.

Please refer to FIG. 2. According to the foregoing structure, each of the supporting patterns 2 can fill the difference in height between the surface of the tape T, prevent the tape T from being skewed during the winding process, and keep the tape T in the roll. After being stored, it is difficult to deform; when the tape T is rolled and stacked one by one, the protective layer 3 is used to prevent the line pattern 1 and the support pattern 2 from directly touching the bottom surface of the tape T It can reduce the pattern friction and prevent the generation of debris. In addition, each of the openings 31 can be used to destroy the vacuum adhesion between the protective layer 3 and the tape T of the previous layer, which can avoid the tape. T is difficult to separate in the unrolling process and affects subsequent processing processes.

In summary, the reel-type flexible circuit board of this creation can make the reel easy to unwind and rewind with each of the supporting patterns and each of the openings in the protective layer, which can improve the processing efficiency of electronic circuits. In addition, the protective layer on the support pattern can prevent friction from generating debris, and has the effects of preventing circuit damage and improving work safety.

Although this creation has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit this creation. Anyone skilled in this art can make various changes and modifications to the above-mentioned embodiments without departing from the spirit and scope of this creation. The technical scope protected by the creation, so the scope of protection of this creation shall be determined by the scope of the attached patent application.

﹝ 本 ﹞ ﹞
1‧‧‧line pattern
2‧‧‧ support pattern
3, 3a, 3b‧‧‧ cover
31‧‧‧ opening
T‧‧‧Tape
C‧‧‧cut line
G‧‧‧Channel width
P‧‧‧ Clearance
W1‧‧‧line width
W2‧‧‧Side Width Customary
9‧‧‧ flexible circuit board
91‧‧‧ route area
92‧‧‧ resection area
S‧‧‧ Flexible substrate

[Figure 1] A conventional tape-and-reel flexible circuit board.
[Fig. 2] A plan view of a pattern configuration of a preferred embodiment of the present invention.
[Fig. 3a] A plan view of a straight support pattern as shown in Fig. 2.
[Figure 3b] A plan view of the supporting pattern of the horizontal bar as shown in Figure 2.
[Figure 3c] A plan view of the support pattern of the internal hollowing as shown in Figure 2.
[Figure 4] A partially enlarged view of the protective layer of a straight opening as shown in Figure 2.
[Figure 5] A partially enlarged view of the protective layer of the horizontally-opened hole as shown in Figure 2.
[Figure 6] Partially enlarged view of the protective layer with square openings as shown in Figure 2.

Claims (9)

A tape and reel flexible circuit board includes:
At least one line pattern on the surface of a roll of tape;
At least one support pattern is located on the periphery of the line pattern, and the support pattern is located on the surface of the tape on the same side as the line pattern; and a plurality of protective layers respectively covering the line pattern and the support pattern, and covering the support The protective layer of the pattern has a plurality of openings. The tape-and-reel flexible circuit board described in item 1 of the scope of patent application, wherein the protective layer covering each of the supporting patterns is spaced a channel wide from the protective layer of the adjacent circuit pattern, and the channel width is not less than 0.8 mm. The tape-and-reel flexible circuit board according to item 1 of the scope of patent application, wherein a distance between two adjacent openings is a gap, and the gap is 1 to 5 mm. The tape-and-reel flexible circuit board according to item 1 of the scope of patent application, wherein the distance between the edge of the protective layer and each of the openings is a gap, and the gap is 1 to 5 mm. The tape-and-reel flexible circuit board according to item 1 of the scope of patent application, wherein the plurality of openings are horizontal strips, and each of the openings has a line width, and the line width is 0.8 to 1.5 mm. The tape-and-reel flexible circuit board according to item 1 of the scope of patent application, wherein the plurality of openings are a plurality of straight strips, and each of the openings has a line width, and the line width is 0.8 to 1.5 mm. The tape-and-reel flexible circuit board according to item 1 of the scope of patent application, wherein the plurality of openings are distributed in a plurality of squares in rows and columns, and each of the openings has a side width of 1 to 2 mm. The reel-type flexible circuit board according to any one of claims 1 to 7, wherein the circuit pattern is surrounded by a cutting line, and the supporting pattern is located outside the surrounding range of the cutting line. The tape-and-reel flexible circuit board according to any one of claims 1 to 7, wherein the protective layer is solder resist paint, the circuit pattern and the support pattern are conductive materials.