CN114340184A - Manufacturing method of flexible circuit board and processing method of flexible material - Google Patents
Manufacturing method of flexible circuit board and processing method of flexible material Download PDFInfo
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Abstract
The invention relates to the field of precision machining of flexible materials, in particular to a manufacturing method of a flexible circuit board and a machining method of a flexible material, wherein the machining method of the flexible material comprises the following steps of determining an original machining drawing file of the flexible material to be machined, and performing stretching deformation on the original machining drawing file to obtain a precision compensation machining drawing file; and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file. The processing method of the flexible material can solve the problems that when the flexible material is processed, the flexible material is directly stretched and deformed by tension force to cause processing precision loss, and when the flexible material is not pulled, the unwinding and winding of the flexible material cannot be carried out.
Description
Technical Field
The invention relates to the technical field of precision machining of flexible materials, in particular to a manufacturing method of a flexible circuit board and a machining method of a flexible material.
Background
Currently, the flexible circuit board is mainly manufactured by FCCL through mechanical or laser drilling and etching electroplating, and the production cost is relatively high whether electrolytic copper or rolled copper.
If the PI film (polyimide) is directly drilled, then the seed layer is sputtered and electroplated, then the copper foil is electroplated, and then the circuit is directly etched, the working procedures of plasma cleaning, micro etching and the like in the traditional flexible circuit board manufacturing process can be reduced, and the material cost of the FCCL can also be directly reduced. However, if only a single sheet is produced, it is difficult to automate the production and the cost cannot be reduced significantly.
If the roll-to-roll mode is adopted for production, the production cost can be obviously reduced because the production with higher automation degree can be realized. However, because the PI film is thin, the PI film must be pulled in roll-to-roll production to normally unwind and wind the material, otherwise, the deviation rectifying action of unwinding and winding cannot be realized. However, if the PI film is under the action of tensile force, elastic deformation is generated, and the processed pattern loses the original processing precision after the tensile force applied to the PI film disappears along with the disappearance of the elastic deformation of the PI film, so that the practical use cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a manufacturing method of a flexible circuit board and a processing method of a flexible material, wherein the manufacturing method of the flexible circuit board can reduce the procedures of plasma cleaning, micro etching and the like in the traditional flexible circuit board manufacturing process and can also directly reduce the material cost of FCCL; the processing method of the flexible material can solve the problems that when the flexible material is processed, the flexible material is directly stretched and deformed by tension force to cause processing precision loss, and when the flexible material is not pulled, the unwinding and winding of the flexible material cannot be carried out.
In a first aspect, the present invention provides a method for manufacturing a flexible printed circuit board, the method comprising the steps of,
s1, carrying out drawing and filing processing on the flexible material to form the flexible material with processing patterns;
s2, sputtering and electroplating the flexible material with the processing pattern to form a flexible copper-clad plate;
and S3, etching a circuit on the flexible copper clad laminate to form a flexible circuit board.
The invention has the beneficial effects that: the invention relates to a method for manufacturing a flexible circuit board, which directly processes a picture file on a flexible material required by FCCL manufacturing, then forms an FCCL material by adopting a sputtering and electroplating mode, and finally directly carries out development and photoetching.
In a second aspect, the present invention provides a method for processing a flexible material, which performs figure file processing on the flexible material, comprising the following steps,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
In a third aspect, the present invention provides a flexible material processing system for performing graphic processing on a flexible material, comprising the following modules,
the processing drawing compensation module is used for determining an original processing drawing of the flexible material and performing stretching deformation on the original processing drawing to obtain a precision compensation processing drawing;
and the figure file processing module is used for carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, and after the tensile force applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
In a fourth aspect, the present invention provides a processing apparatus for flexible material, comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when executed implementing the processing method as described above.
In a fifth aspect, the present invention provides a processing apparatus for flexible material, the processing apparatus is used for processing a figure file of a flexible material, and comprises a processing machine table, the processing machine table is used for,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
The invention has the beneficial effects that: according to the processing method, the system, the device and the equipment for the flexible material, the original processing drawing file is subjected to precision compensation by utilizing the tensile deformation of the flexible material in a processing breadth to obtain the precision compensation processing drawing file, and the flexible material under the action of tension is subjected to drawing file processing according to the precision compensation processing drawing file, so that the contradiction that the processing precision cannot be met due to the elastic deformation of the flexible material under the action of tension and the coil cannot be normally unwound and unwound once no tension exists is overcome, and the high-efficiency roll-to-roll processing of the high-precision flexible material has high feasibility.
Drawings
FIG. 1 is a flow chart of a method for manufacturing a flexible circuit board according to the present invention;
FIG. 2 is a flow chart of a method of processing a flexible material according to the present invention;
FIG. 3 is a block diagram of a flexible material processing system according to the present invention;
fig. 4 is a schematic structural diagram of a flexible material processing apparatus according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the flexible coil stock unwinding device comprises a discharging coil stock machine 11, an unwinding roller 12, a flexible coil stock to be unwound 13, an unwinding material counterweight roller 14 and an unwinding material driven roller; 2. a flexible material; 3. a processing machine table 31 and a processing table top; 4. a material receiving and rolling machine 41, a material rolling driven roller 42, a material rolling counterweight roller 43, a flexible rolled material which is received 44 and a material rolling roller.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
The first embodiment is as follows:
as shown in fig. 1, a method for manufacturing a flexible circuit board includes the following steps,
s1, carrying out drawing and filing processing on the flexible material to form the flexible material with processing patterns;
s2, sputtering and electroplating the flexible material with the processing pattern to form a flexible copper-clad plate;
and S3, etching a circuit on the flexible copper clad laminate to form a flexible circuit board.
In the production process of the Flexible Printed Circuit board, a Flexible Copper Clad Laminate (FCCL, also called as "Flexible Copper Clad Laminate") is used as a substrate material for processing a Flexible Printed Circuit board (FPC). FCCL is composed of a flexible insulating base film and a metal foil. The flexible copper clad laminate compounded by three different materials of copper foil, film and adhesive is called a three-layer flexible copper clad laminate (3L-FCCL for short). The flexible copper clad laminate without the adhesive is called a two-layer flexible copper clad laminate (2L-FCCL for short).
The manufacturing process of the flexible circuit board is generally as follows: FCCL drilling (laser drilling or mechanical drilling) -cleaning and micro-etching-photoetching development-film pasting and other procedures, the process flow is complex, the cost is high, and the yield is difficult to achieve very high.
If the flexible insulation film of the FCCL manufacturing raw material is directly drilled, for example, the polyimide PI film is directly drilled, then the FCCL material is formed by adopting a sputtering and electroplating mode, and finally the development and the photoetching are directly carried out, the cleaning and micro-etching process can be saved, the purchasing cost of the FCCL finished material is saved, and the manufacturing cost of the flexible circuit board can be greatly reduced.
Preferably, the manner of drawing processing in S1 includes any one or more of mechanical processing, plasma processing and laser processing.
The figure file processing comprises the processing in modes of mechanical drilling and cutting and the like, also comprises the processing of cutting and drilling the flexible material by laser, and also can be in a chemical or plasma processing mode.
Preferably, the step S1 is specifically to perform penetrating graphic processing on the flexible material to form a flexible material with a penetrating processing pattern;
and S2 is specifically a flexible copper clad laminate of an integrated rivet structure, wherein the flexible material with the penetrating processing pattern is subjected to double-sided sputtering and electroplating, and an electroplated layer is generated on the side wall of the penetrating processing pattern to form a double-sided conductive layer.
The integrated rivet structure of the double-sided conducting layer enables the physical and electrical connection of the double-sided conducting layer to be more reliable and perfect.
Preferably, the step S1 is to perform a non-penetrating pattern processing on the flexible material to form a flexible material with a non-penetrating processed pattern.
And performing non-penetrating drawing and filing processing on the flexible material, and increasing the adhesive force of the conductive layer sputtered and plated on the surface of the flexible material after sputtering and plating on the surface of the flexible material.
Preferably, the flexible material is subjected to micro-etching based on the non-penetrated processing pattern, and the obtained circuit faces the direction of the flexible material and is completely or partially embedded into the flexible material.
The partial embedding means that one part of the circuit faces the direction of the flexible material, is embedded into the flexible material, the other part of the circuit protrudes out of the flexible material, the embedded part and the protruding part form a circuit whole, and the proportion of embedding and protruding is reasonably set according to actual conditions.
If the surface of the circuit partially embedded into the flexible material facing the flexible material is etched again, the convex surface of the circuit is etched, and the circuit is still present in the groove (in the non-penetrated processing pattern), it is equivalent to that the circuit is completely embedded into the flexible material.
The circuit is partially embedded into the flexible material in the direction facing the flexible material, so that the adhesive force of the fine circuit on the surface of the flexible material is increased.
The most critical part of the manufacturing method of the flexible circuit board is the precision problem of drilling the flexible insulating material. On one hand, in order to save the production cost, a roll-to-roll automatic production technology must be introduced, and due to roll-to-roll automatic production, the problems of roll discharging and flexible material processing and material winding are involved, and here, tension must be introduced to the flexible material to ensure that the roll discharging and the material winding can be completed. However, the flexible material is subjected to tension, the flexible material is elastically deformed, and after the tension of the flexible material is removed, the shape and position accuracy of the pattern processed on the surface of the flexible material are greatly changed, so that the shape and/or position accuracy of the pattern exceeds the requirement of production accuracy, and continuous production cannot be realized. In order to solve the technical problem, the invention further provides a processing method of the flexible material, and the specific description refers to the following second embodiment.
Example two:
as shown in fig. 2, a method for processing a flexible material, which performs figure file processing on the flexible material, comprises the following steps,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
The matching refers to that the obtained processing pattern and the theoretical processing pattern meet the design precision requirement.
In some cases, the flexible material needs tension to obtain a relatively flat processing plane, and once the tension is introduced, the shape and/or position accuracy of the processing pattern exceeds the original accuracy design requirement as the tension disappears. The processing method of the flexible material of the invention is to ensure that the shape and/or position precision of the processed pattern after the tension of the flexible material disappears meets the design requirement when the flexible material with tension is processed.
The processing method of the flexible material solves the problem of contradiction between the tension deformation of the flexible material and the shape and/or position precision of the processed graph. When the flexible material with tension force is processed, the original processing figure file (the shape and/or position precision of the processing figure) can be compensated, so that the shape and/or position precision of the processed figure meets the actual processing precision requirement after the flexible material is subjected to tension removal.
The specific methods for obtaining the precision compensation processing figure file by stretching and deforming the original processing figure file are three.
Preferably, the first method for obtaining the precision compensation processing drawing file by performing the stretching deformation on the original processing drawing file is,
calculating the tensile deformation of the flexible material in the processing web according to the magnitude of the tensile force applied to the flexible material and the elastic modulus of the flexible material;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
This compensation is simple and convenient, but the error can be relatively large because the modulus of elasticity of the film is not well measured.
Preferably, the second method for obtaining the precision compensation processing drawing file by performing the stretching deformation on the original processing drawing file is,
carrying out drawing and filing processing on the flexible material without tension force according to a preset processing drawing, so as to form a first processing figure on the flexible material without tension force, and reading and recording coordinate data of the first processing figure;
applying a pulling force on the flexible material, enabling the flexible material to deform, enabling the first processing graph to be transformed into a second processing graph due to deformation, and reading and recording coordinate data of the second processing graph;
comparing the coordinate data of the second processing graph with the theoretical coordinate data of the preset processing graph file, or comparing the coordinate data of the second processing graph with the coordinate data of the first processing graph to obtain the stretching deformation of the flexible material in the processing breadth;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
In the compensation mode, firstly, the flexible material in a free state is directly subjected to graphic file processing to form a first processing graph, then the flexible material is elastically stretched under corresponding tension, therefore, the first processing graph is transformed into a second processing graph due to deformation, then, the coordinate data (shape and/or position data) of the second processing graph under tension is measured, and the difference value of the coordinate data of the second processing graph and the theoretical coordinate data of the preset processing graphic file or the difference value of the coordinate data of the second processing graph and the coordinate data of the first processing graph is data to be compensated, so that compensation data (tensile deformation) can be relatively accurately obtained.
Preferably, the third method for obtaining the precision compensation processing drawing file by performing the stretching deformation on the original processing drawing file is,
carrying out drawing file processing on the flexible material under the action of tension according to a preset processing drawing file, thereby forming a third processing graph on the flexible material under the action of tension, and reading and recording coordinate data of the third processing graph;
unloading the tensile force applied to the flexible material, recovering the deformation of the flexible material, converting the third processing graph into a fourth processing graph due to the recovery deformation, and reading and recording the coordinate data of the fourth processing graph;
comparing the coordinate data of the fourth processing graph with the theoretical coordinate data of the preset processing graph file, or comparing the coordinate data of the fourth processing graph with the coordinate data of the third processing graph to obtain the stretching deformation of the flexible material in the processing breadth;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
The compensation method comprises the steps of firstly, directly processing a figure file on a flexible material under the action of tension to obtain a third processed figure, then removing the tension borne by the flexible material, converting the third processed figure into a fourth processed figure due to recovery deformation, and then measuring coordinate data of the fourth processed figure, wherein the difference value of the coordinate data of the fourth processed figure and the theoretical coordinate data of the preset processed figure file or the difference value of the coordinate data of the fourth processed figure and the coordinate data of the third processed figure file is data to be compensated, so that the compensation data can be relatively accurately obtained.
Specifically, in the second or third scheme for obtaining the precision compensation processing drawing file, the preset processing drawing file preferentially adopts a drawing which is easier to identify the position coordinates, for example, the processing drawing corresponding to the preset processing drawing file is any one or a combination of a plurality of shapes selected from a circle, a cross and a square.
Preferably, the deformation of the flexible material caused by the tensile force is specifically elastic deformation; and the compensation of the original processing figure file by utilizing the stretching deformation of the flexible material in the processing breadth is specifically linear compensation or nonlinear compensation.
Preferably, before and after the flexible material is subjected to drawing and filing processing, the method comprises the following steps of synchronously performing unreeling operation and reeling operation on the coiled flexible material; the flexible material is under tension force action due to the unreeling operation and the reeling operation.
Because the PI film is thin, the PI film is required to be pulled in roll-to-roll production, the roll material and the rolling material can be normally discharged, otherwise, the deviation rectifying action of winding and unwinding cannot be realized, and therefore, the flexible material is under the action of the pulling force in the process of unwinding operation and winding operation.
Preferably, the flexible material is fixed by adsorption when the flexible material is subjected to graphic processing.
And the flexible material is fixed by adopting an adsorption method, so that the flexible material is prevented from moving in the processing process of the drawing file, and the processing precision of the drawing file is ensured.
Preferably, the graphic arts processing of the flexible material includes one or a combination of drilling, cutting and welding.
Preferably, the flexible material is a single-layer flexible material or a multi-layer laminated composite flexible material.
Preferably, the flexible material is a combined lamination of any one or more of a polyimide film, a teflon film and a copper foil.
Polyimide film and Teflon film are flexible insulating materials commonly used in the circuit board industry, and are very suitable for producing flexible circuit boards.
Preferably, the thickness of the flexible material is less than 100 microns.
Example three:
based on the processing method of the flexible material, the invention also provides a processing system of the flexible material.
As shown in fig. 3, a system for processing a flexible material includes the following modules,
the processing drawing compensation module is used for determining an original processing drawing of the flexible material and performing stretching deformation on the original processing drawing to obtain a precision compensation processing drawing;
and the figure file processing module is used for carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, and after the tensile force applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
Example four:
based on the processing method of the flexible material, the invention also provides a processing device of the flexible material.
A processing device for flexible material, comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when executed implementing a processing method as described above.
Example five:
based on the processing method of the flexible material, the invention also provides processing equipment of the flexible material.
The processing equipment of the flexible material comprises a processing machine platform, wherein the processing machine platform is used for,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
Preferably, the processing equipment for the flexible material further comprises a discharging material rolling machine and a receiving material rolling machine; two ends of the flexible material are respectively wound on a coiling roller of the discharging coiling machine and a coiling roller of the receiving coiling machine;
the discharging and coiling machine is used for coiling the coiled flexible material out of the discharging roller and sending the coiled flexible material into the processing machine table;
the receiving and rolling machine is used for receiving and aligning the flexible material subjected to drawing and filing processing by the processing machine station into a roll;
the flexible material is tensioned by the mutual matching of the discharging material rolling machine and the receiving material rolling machine, and the flexible material is subjected to tensile elastic deformation generated by the tensile force between the discharging material rolling machine and the receiving material rolling machine.
Preferably, the discharging and rolling machine or/and the receiving and rolling machine is/are provided with a counterweight roller or an elastic mechanism, the counterweight roller is used for pressing the flexible material downwards through self gravity, or the elastic mechanism is used for applying tension to the flexible material.
If a gravity roller is provided, the tension (pulling force) applied to the flexible material is basically fixed, and the precision compensation at the moment is relatively simple. If a spring mechanism is provided, it is preferable to preferentially maintain the tension of the flexible material constant, as the case may be.
Preferably, a graphic coordinate recognition system is arranged on the processing table of the processing machine, and the graphic coordinate recognition system is used for reading and recording coordinate data of a processing graphic formed after the processing machine performs graphic file processing.
Preferably, a negative pressure adsorption system is arranged on a processing table surface of the processing machine table and used for adsorbing and fixing the flexible material on the processing table surface.
Preferably, the processing machine is any one or combination of a laser drilling machine, a laser cutting machine and a laser welding machine.
In this embodiment, as shown in fig. 4, 1 is a discharging material rolling machine, 2 is a flexible material, 3 is a processing machine, and 4 is a receiving material rolling machine.
The material rolling roller of the material discharging and rolling machine 1 comprises an material unwinding roller 11 and an material unwinding driven roller 14, the counter weight roller arranged on the material discharging and rolling machine 1 is an material unwinding counter weight roller 13, and the flexible material 2 to be processed is wound on the material unwinding roller 11 to form a flexible material 12 to be discharged; the winding roller of the material receiving and winding machine 4 comprises a winding roller 44 and a winding driven roller 41, the counterweight roller arranged on the material receiving and winding machine 4 is a winding counterweight roller 42, and the processed flexible material 2 is wound on the winding roller 44 to form a received flexible winding material 43.
The flexible coil stock 12 to be unwound is arranged on the coil stock unwinding roller 11, the coil stock unwinding roller 11 rotates clockwise, the flexible coil stock 12 to be unwound can be rolled out, is pressed downwards by the gravity of the coil stock unwinding counterweight roller 13, winds around the coil stock unwinding driven roller 14, and is pulled out horizontally to form the flexible coil stock 2.
The flexible material 2 is located the top of the processing mesa 31 of processing board 3, and processing mesa 31 surface design has the bleeder vent, can form the negative pressure, adsorbs flexible material 2 on the surface of processing mesa 31, and processing mesa 31 upper surface can design installation tool board (not shown in the picture) for processing chip removal usage such as drilling, and flexible material 2 will be adsorbed on the tool board by the negative pressure this moment.
The flexible material 2 winds downwards after passing through a material winding driven roller 41 to form a material winding counterweight roller 42, and a collected flexible material 43 is installed on a material winding roller 44.
In principle, the unwinding material counter weight roller 13 and the winding material counter weight roller 42 need to be gravity-matched; the tension applied to the flexible material 2 is the gravity of the unwinding material counter weight roller 13 or the winding material counter weight roller 42.
Connect the flexible material of blowing coil stock machine and receipts material coil stock machine, the tensile deformation that produces by the pulling force of blowing coil stock machine and receipts material coil stock machine, after being adsorbed by the processing mesa, produced elastic deformation remains basically in the course of working, the processing software of processing board sets up the compensation of tensile elastic deformation precision in the processing breadth, make processing back, get rid of the tensile that the flexible coil stock of processing breadth receives, tensile flexible coil stock elastic shrinkage resumes, make the figure of processing and/or position precision on the flexible material accord with design machining precision requirement, the flexible material can't satisfy the machining precision by tensile force elastic deformation, in case do not have the contradiction that the pulling force just can't normally unreel the coil stock and receive the coil stock, make the high-efficient roll-to-roll processing of high accuracy flexible coil stock possess high feasibility.
The manufacturing method of the flexible circuit board has the following advantages:
1) a brand-new manufacturing process route of the low-cost flexible circuit board is realized;
2) for the penetrable processing pattern, a perfect integrated rivet connection structure of double-sided conductive circuits can be obtained, and reliable perfect electrical property connection, reliable mechanical connection and mechanical fatigue resistance connection are realized;
3) for non-penetrating processing patterns, the adhesion of the single-panel circuit on the surface of the flexible material can be remarkably increased.
The processing method, the system, the device and the equipment for the flexible material provided by the invention have the following advantages:
1) the flexible material can realize reel-to-reel tension processing of the flexible material due to the tensile force action of the flexible material, and particularly solves the problems of figure shape and/or position precision of laser processing of the flexible material with tension;
2) the method is suitable for roll-to-roll batch automatic production;
3) the manufacturing process route of the flexible circuit board with low cost is realized, the production and manufacturing cost of the flexible circuit board is greatly reduced, and the bottleneck of imported materials of FCCL flexible copper foil is avoided;
4) the manufacturing method of the double-sided flexible circuit board with high-performance electric connection/high-reliability mechanical connection is realized.
The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (25)
1. A manufacturing method of a flexible circuit board is characterized in that: comprises the following steps of (a) carrying out,
s1, carrying out drawing and filing processing on the flexible material to form the flexible material with processing patterns;
s2, sputtering and electroplating the flexible material with the processing pattern to form a flexible copper-clad plate;
and S3, etching a circuit on the flexible copper clad laminate to form a flexible circuit board.
2. The method for manufacturing a flexible wiring board according to claim 1, characterized in that: the manner of drawing processing in S1 includes any one or a combination of mechanical processing, plasma processing and laser processing.
3. The method for manufacturing a flexible wiring board according to claim 1, characterized in that: the step S1 is specifically to perform penetrating drawing processing on the flexible material to form a flexible material with penetrating processing patterns;
and S2 is specifically a flexible copper clad laminate of an integrated rivet structure, wherein the flexible material with the penetrating processing pattern is subjected to double-sided sputtering and electroplating, and an electroplated layer is generated on the side wall of the penetrating processing pattern to form a double-sided conductive layer.
4. The method for manufacturing a flexible wiring board according to claim 1, characterized in that: specifically, the step S1 is to perform a non-penetrating pattern processing on the flexible material to form the flexible material with the non-penetrating processed pattern.
5. The method for manufacturing a flexible wiring board according to claim 4, characterized in that: and carrying out micro-etching on the flexible material by taking the non-penetrating processing pattern as a reference, wherein the obtained circuit faces to the direction of the flexible material and is completely or partially embedded into the flexible material.
6. A processing method of flexible materials is characterized in that: the method for processing the picture files of the flexible material comprises the following steps,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
7. The method of processing a flexible material according to claim 6, wherein: the specific method for obtaining the precision compensation processing figure file by stretching and deforming the original processing figure file comprises the following steps,
calculating the tensile deformation of the flexible material in the processing web according to the magnitude of the tensile force applied to the flexible material and the elastic modulus of the flexible material;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
8. The method of processing a flexible material according to claim 6, wherein: the specific method for obtaining the precision compensation processing figure file by stretching and deforming the original processing figure file comprises the following steps,
carrying out drawing and filing processing on the flexible material without tension force according to a preset processing drawing, so as to form a first processing figure on the flexible material without tension force, and reading and recording coordinate data of the first processing figure;
applying a pulling force on the flexible material, enabling the flexible material to deform, enabling the first processing graph to be transformed into a second processing graph due to deformation, and reading and recording coordinate data of the second processing graph;
comparing the coordinate data of the second processing graph with the theoretical coordinate data of the preset processing graph file, or comparing the coordinate data of the second processing graph with the coordinate data of the first processing graph to obtain the stretching deformation of the flexible material in the processing breadth;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
9. The method of processing a flexible material according to claim 6, wherein: the specific method for obtaining the precision compensation processing figure file by stretching and deforming the original processing figure file comprises the following steps,
carrying out drawing file processing on the flexible material under the action of tension according to a preset processing drawing file, thereby forming a third processing graph on the flexible material under the action of tension, and reading and recording coordinate data of the third processing graph;
unloading the tensile force applied to the flexible material, recovering the deformation of the flexible material, converting the third processing graph into a fourth processing graph due to the recovery deformation, and reading and recording the coordinate data of the fourth processing graph;
comparing the coordinate data of the fourth processing graph with the theoretical coordinate data of the preset processing graph file, or comparing the coordinate data of the fourth processing graph with the coordinate data of the third processing graph to obtain the stretching deformation of the flexible material in the processing breadth;
and compensating the original processing drawing file by utilizing the tensile deformation of the flexible material in the processing breadth to obtain the precision compensation processing drawing file.
10. A method of processing a flexible material according to claim 8 or 9, characterized in that: the processing pattern corresponding to the preset processing figure file is any one or combination of a plurality of circular shapes, cross shapes and square shapes.
11. A method of processing a flexible material according to claim 8 or 9, characterized in that: the deformation of the flexible material caused by the tensile force is specifically elastic deformation; and the compensation of the original processing figure file by utilizing the stretching deformation of the flexible material in the processing breadth is specifically linear compensation or nonlinear compensation.
12. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: before and after the flexible material is subjected to drawing processing, synchronously carrying out unreeling operation and reeling operation on the coiled flexible material; the flexible material is under tension force action due to the unreeling operation and the reeling operation.
13. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: and when the flexible material is subjected to drawing processing, the flexible material is fixed by an adsorption method.
14. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: the graphic processing of the flexible material includes one or more of a combination of drilling, cutting and welding.
15. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: the flexible material is a single-layer flexible material or a multi-layer superposed composite flexible material.
16. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: the flexible material is a composite lamination of any one or more of a polyimide film, a Teflon film and a copper foil.
17. A method of processing a flexible material according to any of claims 6 to 9, characterized in that: the flexible material has a thickness of less than 100 microns.
18. A system for processing a flexible material, comprising: used for processing figures and files of flexible materials, comprises the following modules,
the processing drawing compensation module is used for determining an original processing drawing of the flexible material and performing stretching deformation on the original processing drawing to obtain a precision compensation processing drawing;
and the figure file processing module is used for carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, and after the tensile force applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
19. A processing device for flexible materials is characterized in that: comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when executed implementing a processing method according to any one of claims 6 to 17.
20. The processing equipment of the flexible material is characterized in that: is used for processing the figure files of the flexible materials, comprises a processing machine station used for processing the figure files,
determining an original processing drawing file of a flexible material to be processed, and performing stretching deformation on the original processing drawing file to obtain a precision compensation processing drawing file;
and carrying out figure file processing on the flexible material under the action of tension according to the precision compensation processing figure file so as to form a processing figure on the flexible material under the action of tension, wherein after the tension applied to the flexible material is unloaded, the processing figure on the flexible material without the action of tension is matched with the theoretical figure of the original processing figure file.
21. The apparatus for processing a flexible material as defined in claim 20, wherein: the device also comprises a discharging material rolling machine and a receiving material rolling machine; two ends of the flexible material are respectively wound on a coiling roller of the discharging coiling machine and a coiling roller of the receiving coiling machine;
the discharging and coiling machine is used for coiling the coiled flexible material out of the discharging roller and sending the coiled flexible material into the processing machine table;
the receiving and rolling machine is used for receiving and aligning the flexible material subjected to drawing and filing processing by the processing machine station into a roll;
the flexible material is tensioned by the mutual matching of the discharging material rolling machine and the receiving material rolling machine, and the flexible material is subjected to tensile elastic deformation generated by the tensile force between the discharging material rolling machine and the receiving material rolling machine.
22. The apparatus for processing a flexible material as defined in claim 21, wherein: the feeding and rolling machine or/and the receiving and rolling machine is/are provided with a counterweight roller or an elastic mechanism, the counterweight roller is used for pressing the flexible material downwards through self gravity, or the elastic mechanism is used for applying pulling force to the flexible material.
23. The processing plant of flexible material according to any one of claims 20 to 22, characterized in that: and a graphic coordinate recognition system is arranged on the processing table surface of the processing machine table and used for reading and recording coordinate data of a processing graphic formed after the processing machine table processes a graphic file.
24. The processing plant of flexible material according to any one of claims 20 to 22, characterized in that: and a negative pressure adsorption system is arranged on the processing table surface of the processing machine table and is used for adsorbing and fixing the flexible material on the processing table surface.
25. The processing plant of flexible material according to any one of claims 20 to 22, characterized in that: the processing machine platform is specifically any one or combination of a plurality of laser drilling machine platforms, laser cutting machine platforms and laser welding machine platforms.
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