CN114615804B - Manufacturing method of flexible circuit board with 180-degree bending single-sided golden finger and two-sided plugging function - Google Patents
Manufacturing method of flexible circuit board with 180-degree bending single-sided golden finger and two-sided plugging function Download PDFInfo
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- CN114615804B CN114615804B CN202210284539.9A CN202210284539A CN114615804B CN 114615804 B CN114615804 B CN 114615804B CN 202210284539 A CN202210284539 A CN 202210284539A CN 114615804 B CN114615804 B CN 114615804B
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- 238000005452 bending Methods 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005530 etching Methods 0.000 claims abstract description 39
- 239000003292 glue Substances 0.000 claims abstract description 34
- 239000004642 Polyimide Substances 0.000 claims abstract description 29
- 229920001721 polyimide Polymers 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000011265 semifinished product Substances 0.000 claims abstract description 14
- 239000000047 product Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 239000011889 copper foil Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 210000003811 finger Anatomy 0.000 description 67
- 239000010408 film Substances 0.000 description 18
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000013039 cover film Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 210000003813 thumb Anatomy 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
Abstract
The invention provides a method for manufacturing a flexible circuit board with a single-sided golden finger bending 180 DEG and two-sided plugging function, which is characterized in that: the single-sided flexible copper-clad plate is used for extending the golden finger extension section and the frame extension section on the basis of the length of the golden finger; typesetting is carried out, and an etching line is designed on the frame of the non-product area between the front golden finger and the golden finger extension section after typesetting; attaching the cut-out pure glue to the back position of the polyimide substrate corresponding to the golden finger on the front side of the polyimide substrate; bending the golden finger extension section outside the etching line by 180 degrees to the back surface of the golden finger in the etching line; the back of the polyimide substrate corresponding to the golden finger extension section is bonded with the back of the pure glue, so that a semi-finished product is obtained; and (3) carrying out prepressing, pressing, baking and post-process punching on the semi-finished product to obtain the flexible circuit board with the golden fingers on one end or both ends and both sides of the single-sided flexible circuit board. The invention enables the single-sided flexible circuit board to achieve the function of double-sided connection.
Description
Technical Field
The invention relates to a flexible circuit board, in particular to a flexible circuit board with a single-sided golden finger bent 180 degrees to realize a double-sided plugging function.
Background
The connection between each module of electronic product is realized through flexible circuit board in many, and some electronic products can't carry out homofacial line connection or welding with single face flexible circuit board because of volume and structural reason, need carry out positive and negative connection through the mode that double face circuit board via hole switched on, realize double face welding or connect the function of inserting, but double face board compliance is relatively poor, with high costs, the preparation cycle is long.
Disclosure of Invention
The invention provides a method for manufacturing a flexible circuit board with a single-sided golden finger bending 180-degree double-sided plugging function, which aims to solve the defects in the prior art and enable the single-sided flexible circuit board to achieve the double-sided plugging function.
The technical scheme adopted for solving the technical problems is as follows:
the manufacturing method of the flexible circuit board with the single-sided golden finger bending 180-degree double-sided plugging function is characterized by comprising the following steps of:
the single-sided flexible copper-clad plate is formed by coating copper foil on the front side of a polyimide substrate, and is a single-sided glue-free rolled copper-clad plate;
the length of the golden finger is prolonged on the basis of the length of the golden finger, the prolonged part is a golden finger extending section and a frame extending section, and the length of the golden finger extending section is as follows: the effective length of the golden finger, the thickness of the pure glue and the thickness of the polyimide substrate which are doubled;
typesetting is carried out, and an etching line is designed on the frame of the non-product area between the front golden finger and the golden finger extension section after typesetting;
cutting off the frame extension section after manufacturing the circuit and pasting and pressing the covering film;
attaching the cut-out pure glue to the back position of the polyimide substrate corresponding to the golden finger on the front side of the polyimide substrate;
bending the golden finger extension section outside the etching line by 180 degrees to the back surface of the golden finger in the etching line;
the back of the polyimide substrate corresponding to the golden finger extension section is bonded with the back of the pure glue, so that a semi-finished product is obtained;
and (3) carrying out prepressing, pressing, baking and post-process punching on the semi-finished product to obtain the flexible circuit board with the golden fingers on one end or both ends and both sides of the single-sided flexible circuit board.
A covering film marking line is designed between a line section of the line layer and the golden finger; attaching the cut covering film to a line section of the line layer, aligning the side edge of the covering film with the covering film marking line, and pressing and baking to obtain a semi-finished single-sided flexible copper-clad plate with the covering film on the line layer; and the two side edges of the pure adhesive are respectively aligned with the etching line and the covering film marking line, and are attached to the back surface of the polyimide substrate, and the release paper on the pure adhesive is torn off after the laminator.
Bending the golden finger extension section at the outer side of the etching line by 180 degrees to the back surface of the golden finger in the etching line by using a jig according to the etching line:
the jig consists of a main board and two bending boards with equal thickness, and the diameter of the positioning hole of the bending board is larger than that of the positioning hole of the main board;
the main board and the two bending boards face downwards, and the left bending plate and the right bending plate are moved in parallel, so that the width of a gap between the bending plate and the main board is equal to the thickness plus the thickness of the pure glue;
then, pasting the two bending plates on the gaps by using a masking adhesive, positioning the two bending plates on the back surfaces of the main plate, pasting the two sides of the main plate, and knocking the positioning nails into the positioning holes of the main plate;
taking up the bending plates at two sides, sleeving the positioning holes of the bending plates into the positioning nails penetrating through the positioning holes of the main board after bending, and completing the manufacturing of the jig;
aligning the positioning holes of the single-sided flexible copper-clad plate with the upward side of the pure glue with the positioning nails of the jig penetrating through the positioning holes of the main board, enabling the golden finger extension section to fall on the bending plate of the jig, checking whether an etching line is between the main board and the bending plate of the jig, then pressing the pure glue, taking the bending plate of the jig from two sides to bend inwards, covering the bending plate, and sleeving the positioning holes on two sides of the single-sided flexible copper-clad plate, the positioning holes of the bending plate and the positioning holes into the positioning nails; and then pressing the bending plate, bonding the back of the polyimide substrate corresponding to the golden finger extension section with the back of the pure glue, turning over the bending plate, and taking out the bent semi-finished product, thereby completing the bending of the golden finger extension section outside the etching line by 180 degrees to the back of the golden finger in the etching line.
The thickness of the copper foil is 12-18um.
The etched line width was 0.2mm.
The thickness of the pure glue is 25um.
The invention has the advantages that:
the invention obtains the flexible circuit board with golden fingers at one end or two sides of two ends of a single-sided flexible circuit board, achieves the aim of double-sided plugging function of the single-sided flexible circuit board, has thinner product thickness, better flexibility and longer service life in dynamic use compared with a double-layer board by subtracting a layer of copper foil and a base material, simultaneously omits the working procedures of drilling and copper plating, greatly reduces the cost and improves the production efficiency.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is an original cross-sectional view of a wiring layer;
FIG. 2 is a cross-sectional view of an extension of a golden finger of a circuit layer;
FIG. 3 is a cross-sectional view of the cover film after attachment;
FIG. 4 is a cross-sectional view of the back of the golden finger after being stuck with pure glue;
FIG. 5 is a cross-sectional view of the finished product after bending the golden finger 180 degrees;
FIG. 6 is a layout of a circuit layer;
FIG. 7 is a plan view of the jig;
FIG. 8 is a rear plan view of the back of the jig with masking tape applied thereto;
FIG. 9 is a diagram illustrating bending of two side bendable movable plates of the fixture;
fig. 10 is a plan view of the two movable plates on two sides of the jig after being bent 180 degrees.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art. In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "bottom," and the like as used in this specification are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention discloses a flexible circuit board with a single-sided golden finger bending 180 DEG and two-sided plugging function, which comprises the following steps:
1. and (3) designing a circuit layer:
as shown in fig. 1: the single-sided flexible copper-clad plate 1 is formed by coating a copper foil 12 on the front side of a polyimide substrate 11, and is a single-sided glue-free rolled copper-clad plate with the thickness of 12-18um of the copper foil 12. According to the design size requirement, the length of the golden finger 2 of the circuit layer is designed according to the single-sided flexible copper-clad plate 1.
2. And (3) designing a circuit layer extension section:
as shown in fig. 2, 4 and 6:
the length of the golden finger 2 is prolonged, the prolonged part is a golden finger extending section 21 and a frame extending section 7, wherein the length of the golden finger extending section 21 is as follows: the effective length of the gold finger 2 + the thickness of the resist 6 + twice the thickness of the polyimide substrate 11.
And typesetting is carried out, and an etching line 4 with the width of about 2mm is designed on the frame of the non-product area between the golden finger 2 on the front face and the golden finger extension section 21 after typesetting, namely, an etching line 4 is designed on the frame between each product. The copper foil of the etching lines 4 is etched away during circuit etching, copper sheets on two sides are left, a polyimide substrate is exposed, and the etching lines 4 serve as alignment lines for bending the golden fingers and also serve as easy bending functions during bending the golden fingers.
3. Typesetting and locating hole design:
as shown in fig. 6:
according to the width and the processing capacity of the single-sided flexible copper-clad plate 1, typesetting into proper sizes, and arranging front positioning holes 8 on the inner side of the golden finger 2, and positioning holes 9 on the extending sections 21 and 7 of the frame, wherein the aperture of the front positioning holes 8 is 2.0mm, and the aperture of the positioning holes 9 on the extending sections is 3.0mm, namely, the aperture of the positioning holes 9 on the extending sections is larger than that of the positioning holes 8 on the front side, so that the positioning holes 9 on the extending sections can be sleeved into the jig positioning nails easily during bending.
4. And (3) line manufacturing:
as shown in fig. 2:
and manufacturing a circuit according to a general single-panel circuit flow to obtain the semi-finished single-sided flexible copper-clad plate 1 with the circuit section 0, the golden finger 2, the golden finger extension section 21, the frame extension section 7, the etching line 4 between the golden finger 2 and the golden finger extension section 21, and the covering film marking line 3 between the circuit section 0 and the golden finger 2.
5. Laminating a covering film:
as shown in fig. 3:
and (3) attaching the laser cut covering film 5 to the circuit section 0 of the circuit layer corresponding to the position of the covering film marking line 3, aligning the side edge of the covering film 5 with the covering film marking line 3, and pressing and baking to obtain the semi-finished single-sided flexible copper-clad plate 1 with the covering film 5 on the circuit layer.
6. And (3) laminating with pure glue:
as shown in fig. 4:
and (3) cutting the pure glue 6 with the size and thickness of 25um, aligning the etching line 4 and the covering film marking line 3 respectively on two side edges of the pure glue 6 according to the etching line 4 and the covering film marking line 3 (since the polyimide substrate 11 is transparent, the etching line 4 and the covering film marking line 3 on the front side are easy to see), attaching the pure glue to the back surface of the polyimide substrate 11, removing release paper on the pure glue 6 after laminator, and obtaining a semi-finished product of the pure glue 6 attached to the back surface position of the polyimide substrate 11 corresponding to the golden finger 2 on the front side of the polyimide substrate 11.
7. Manufacturing a special jig:
as shown in fig. 7:
the jig is composed of a main board 101 and two bending boards 201. And designing a numerical control drilling and milling file according to the positioning hole, the length and the width of the flexible circuit board. The length of the main board 101 is the same as the length of the flexible circuit board added up by the golden finger 2 and the circuit section 0, the width is 10mm, and the diameters of the positioning holes 301 and 302 are 1.9mm; the length of the bending plate 201 is consistent with the length of the golden finger extension section 21, the width is consistent with the main board 101, and the diameters of the positioning holes 401 and 402 are 3.0mm, namely, the diameters of the positioning holes 401 and 402 are larger than those of the positioning holes 301 and 302. The main board 101 and the two bending boards 201 have the same thickness, FR-4 epoxy glass cloth plates with the thickness of 1.0-1.5mm are adopted, and a numerical control drilling and milling machine is used for completing the manufacture of positioning holes and the appearance.
The main board 101 and the two bending boards 201 face downwards, and are placed on a table top to be orderly arranged, and the left bending board 201 and the right bending board 201 are moved in parallel, so that the width of a gap 501 between the main board 101 and the main board is equal to the thickness of the FR-4 epoxy glass cloth board (namely the thickness of the main board 101 and the two bending boards 201) +the thickness of the pure glue 6.
As shown in fig. 8:
then, the decorative adhesive 601 is adhered to the gap 501 and is positioned on the back surfaces of the main board 101 and the two bending boards 201, after the two sides are adhered, the main board 101 and the two bending boards 201 face upwards, and stainless steel positioning nails with the diameter of 1.9mm and the height of FR-4FR-4 epoxy glass cloth board and the thickness of 2 times of the flexible circuit board (namely, the thickness of 2 times of the single-sided flexible copper-clad board 1) are knocked in the positioning holes 301 and 302.
As shown in fig. 9 and 10:
therefore, the bending plates 201 on two sides can be taken up, and the positioning holes 401 and 402 are respectively sleeved into the two positioning nails penetrating through the positioning holes 301 and 301 after bending, so that the manufacturing of the jig is completed.
8. Cutting the frame of the extension section:
and cutting off the frame extension section 7 according to the frame line by using a special cutting die.
9. The golden finger extension section is bent by 180 degrees:
the method comprises the steps of aligning the four positioning holes 8 of the single-sided flexible copper-clad plate 1 of the semi-finished product with the side of the pure glue 6 facing upwards with the positioning nails penetrating through the positioning holes 301 and 302 around the jig, putting the positioning nails flat, then, enabling the golden finger extension section 21 of the semi-finished product to fall on the bending plate 201 of the jig, checking whether the etching line 4 is between the main plate 101 and the bending plate 201 of the jig, then, pressing the pure glue 6 with the thumbs of both hands, taking the bending plate 201 of the jig from both sides by the index finger and the middle finger to bend inwards, gradually loosening the thumbs, and then covering the bending plate 201, wherein the etching line 4 is arranged on the border between the front golden finger 2 and the golden finger extension section 21 of the semi-finished product, and the copper foil 12 is harder at both sides of the etching line 4 and the polyimide substrate 11 is softer in the middle, so that the bending is easy. Thus, the positioning holes 9 on the two sides of the single-sided flexible copper-clad plate 1 and the positioning holes 401 and 402 of the bending plate 201 of the semi-finished product can be sleeved into the positioning nails. Then the bending plate 201 is pressed by thumb, at this time, the back of the polyimide substrate 11 corresponding to the golden finger extension section 21 is adhered to the back of the pure glue 6 because of a certain viscosity of the pure glue 6, and then the bending plate 201 is turned over, and the bent semi-finished product is taken out, so that the whole row of golden finger extension sections 21 outside the etching line 4 are bent 180 degrees to the back of the golden finger 2 in the etching line 4, as shown in the structure of fig. 5.
9. Pressing:
as shown in fig. 5:
the pre-pressing time is 5 seconds, the pressure is 5Mpa, the molding time is 120-150 seconds, the pressing is carried out, the baking is carried out for 1 hour at 160 ℃, the subsequent punching and other processing are carried out, the flexible circuit board with golden fingers 2 at one end or both ends and both sides of a single-sided flexible circuit board is obtained, and the purpose that the single-sided flexible circuit board has a double-sided plugging function is achieved.
The structure of the flexible circuit board with the single-sided golden finger bending 180 DEG and two-sided plugging function is as follows:
the circuit board is a flexible copper-clad plate of single-sided glue-free rolled copper, wherein a polyimide substrate 11 is coated with a copper foil 12, and the thickness of the copper foil 12 is 12-18 mu m.
The line section 0 of the front face of the circuit board is covered with a cover film 5, and the side edge of the cover film 5 is aligned with the cover film mark line 3.
One or both ends of the front surface of the circuit board are provided with a golden finger 2 and a golden finger extension section 21 outside the golden finger 2, and an etching line 4 with the thickness of about 0.2mm is arranged on the frame of a non-product area between the golden finger 2 and the golden finger extension section 21.
The back of the circuit board is adhered with pure glue 6 corresponding to the golden finger 2, and two side edges of the pure glue 6 are aligned with the etching line 4 and the covering film marking line 3 respectively.
After the end part of the circuit board is bent 180 degrees, the back surface of the polyimide substrate 11 corresponding to the golden finger extension section 21 is adhered to the back surface of the pure glue 6, the golden finger 2 is arranged at the front end part of the flexible circuit board, and the position of the back surface end part of the flexible circuit board corresponding to the golden finger 2 is the golden finger extension section 21.
Because the rolled copper with certain ductility is selected, the thickness is below 18um, and the thickness of the polyimide substrate 11 and the pure glue 6 is also arranged in the bending area, under the condition that the lamination pressure is controlled to be not more than 5kg, the pressed product is detected, and the phenomenon of cracking of the copper foil 12 is not found at the bending part.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The manufacturing method of the flexible circuit board with the single-sided golden finger bending 180-degree double-sided plugging function is characterized by comprising the following steps of: the single-sided flexible copper-clad plate is formed by coating copper foil on the front side of a polyimide substrate, and is a single-sided glue-free rolled copper-clad plate; the length of the golden finger is prolonged on the basis of the length of the golden finger, the prolonged part is a golden finger extending section and a frame extending section, and the length of the golden finger extending section is as follows: the effective length of the golden finger, the thickness of the pure glue and the thickness of the polyimide substrate which are doubled; typesetting is carried out, and an etching line is designed on the frame of the non-product area between the front golden finger and the golden finger extension section after typesetting; cutting off the frame extension section after manufacturing the circuit and pasting and pressing the covering film; attaching the cut-out pure glue to the back position of the polyimide substrate corresponding to the golden finger on the front side of the polyimide substrate; bending the golden finger extension section outside the etching line by 180 degrees to the back surface of the golden finger in the etching line; the back of the polyimide substrate corresponding to the golden finger extension section is bonded with the back of the pure glue, so that a semi-finished product is obtained; the semi-finished product is punched through pre-pressing, baking and post-working procedures, and the flexible circuit board with golden fingers at one end or two ends and two sides of the single-sided flexible circuit board is obtained;
a covering film marking line is designed between a line section of the line layer and the golden finger; attaching the cut covering film to a line section of the line layer, aligning the side edge of the covering film with the covering film marking line, and pressing and baking to obtain a semi-finished single-sided flexible copper-clad plate with the covering film on the line layer; and the two side edges of the pure adhesive are respectively aligned with the etching line and the covering film marking line, and are attached to the back surface of the polyimide substrate, and the release paper on the pure adhesive is torn off after the laminator.
2. The method for manufacturing the single-sided golden finger bending 180-degree double-sided plugging functional flexible circuit board according to claim 1, wherein the method comprises the following steps: bending the golden finger extension section at the outer side of the etching line by 180 degrees to the back surface of the golden finger in the etching line by using a jig according to the etching line;
the jig consists of a main board and two bending boards with equal thickness, and the diameter of the positioning hole of the bending board is larger than that of the positioning hole of the main board;
the main board and the two bending boards face downwards, and the left bending plate and the right bending plate are moved in parallel, so that the width of a gap between the bending plate and the main board is equal to the thickness plus the thickness of the pure glue;
then, pasting the two bending plates on the gaps by using a masking adhesive, positioning the two bending plates on the back surfaces of the main plate, pasting the two sides of the main plate, and knocking the positioning nails into the positioning holes of the main plate;
taking up the bending plates at two sides, sleeving the positioning holes of the bending plates into the positioning nails penetrating through the positioning holes of the main board after bending, and completing the manufacturing of the jig;
aligning the positioning holes of the single-sided flexible copper-clad plate with the upward side of the pure glue with the positioning nails of the jig penetrating through the positioning holes of the main board, enabling the golden finger extension section to fall on the bending plate of the jig, checking whether an etching line is between the main board and the bending plate of the jig, then pressing the pure glue, taking the bending plate of the jig from two sides to bend inwards, covering the bending plate, and sleeving the positioning holes on two sides of the single-sided flexible copper-clad plate, the positioning holes of the bending plate and the positioning holes into the positioning nails; and then pressing the bending plate, bonding the back of the polyimide substrate corresponding to the golden finger extension section with the back of the pure glue, turning over the bending plate, and taking out the bent semi-finished product, thereby completing the bending of the golden finger extension section outside the etching line by 180 degrees to the back of the golden finger in the etching line.
3. The method for manufacturing the single-sided golden finger bending 180-degree double-sided plugging functional flexible circuit board according to claim 1, wherein the method comprises the following steps: the thickness of the copper foil is 12-18um.
4. The method for manufacturing the single-sided golden finger bending 180-degree double-sided plugging functional flexible circuit board according to claim 1, wherein the method comprises the following steps: the etched line width was 0.2mm.
5. The method for manufacturing the single-sided golden finger bending 180-degree double-sided plugging functional flexible circuit board according to claim 1, wherein the method comprises the following steps: the thickness of the pure glue is 25um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284539.9A CN114615804B (en) | 2022-03-22 | 2022-03-22 | Manufacturing method of flexible circuit board with 180-degree bending single-sided golden finger and two-sided plugging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284539.9A CN114615804B (en) | 2022-03-22 | 2022-03-22 | Manufacturing method of flexible circuit board with 180-degree bending single-sided golden finger and two-sided plugging function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114615804A CN114615804A (en) | 2022-06-10 |
| CN114615804B true CN114615804B (en) | 2024-03-08 |
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|---|---|---|---|
| CN202210284539.9A Active CN114615804B (en) | 2022-03-22 | 2022-03-22 | Manufacturing method of flexible circuit board with 180-degree bending single-sided golden finger and two-sided plugging function |
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| CN (1) | CN114615804B (en) |
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|---|---|---|---|---|
| CN204681669U (en) * | 2015-06-12 | 2015-09-30 | 信丰福昌发电子有限公司 | A kind of display circuit plate |
| CN204905046U (en) * | 2015-08-27 | 2015-12-23 | 昆山微容电子企业有限公司 | 180 axialmode components and parts |
| CN106060734A (en) * | 2016-07-27 | 2016-10-26 | 歌尔股份有限公司 | FPCB structure, loudspeaker module and manufacturing method of FPCB |
| CN217011280U (en) * | 2022-03-22 | 2022-07-19 | 福建世卓电子科技有限公司 | Flexible circuit board with single-sided golden finger bending 180-degree double-sided plugging function |
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2022
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204681669U (en) * | 2015-06-12 | 2015-09-30 | 信丰福昌发电子有限公司 | A kind of display circuit plate |
| CN204905046U (en) * | 2015-08-27 | 2015-12-23 | 昆山微容电子企业有限公司 | 180 axialmode components and parts |
| CN106060734A (en) * | 2016-07-27 | 2016-10-26 | 歌尔股份有限公司 | FPCB structure, loudspeaker module and manufacturing method of FPCB |
| CN217011280U (en) * | 2022-03-22 | 2022-07-19 | 福建世卓电子科技有限公司 | Flexible circuit board with single-sided golden finger bending 180-degree double-sided plugging function |
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