CN107534065A

CN107534065A - Make the method for silk-screen printing on substrate for solar battery product, make the silk screen used in silk-screen printing on substrate for solar battery product and make the equipment of silk-screen printing on substrate for solar battery product

Info

Publication number: CN107534065A
Application number: CN201580078975.9A
Authority: CN
Inventors: 安德烈亚·贝茨尼; 托马索·维尔切斯; 马可·加里亚佐; 路易吉·德·桑蒂
Original assignee: Applied Materials Baccini SpA
Current assignee: Applied Materials Italia SRL
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2018-01-02
Also published as: WO2016180446A1; EP3295488A1; TW201701497A; TWI643356B

Abstract

Present disclosure provides a kind of method (100) for making silk-screen printing on substrate (10) for solar battery product.Method (100) using silk screen (410) in the first typography in carrying out the printing of First Line pattern (210) on substrate (10), substrate (10) is moved away from out into silk screen (410) and be moved back to substrate (10) towards silk screen (410), and carry out the printing of the second line pattern (220) on the first line pattern (210) in the second typography using silk screen (410).

Description

Make the method for silk-screen printing on substrate for solar battery product, for the sun Can battery product make silk screen used in silk-screen printing on substrate and for solar-electricity The equipment that pond product makees silk-screen printing on substrate

Technical field

The embodiment of present disclosure is related to a kind of side for making silk-screen printing on substrate for solar battery product Method, make on substrate for solar battery product silk screen used in silk-screen printing and for solar battery product in base Make the equipment of silk-screen printing on plate.The embodiment of present disclosure (such as refers to more particularly to the printing track of solar cell Shape portion) dual printing method and apparatus.

Background technology

Solar cell is photoelectricity (PV) device, and sunlight is converted directly into electric power by it.In this area, it is known that such as On the substrate of crystalline silicon substrates, solar cell is produced using the printing technology means of such as silk-screen printing etc, is realized too Electrical conduction printing track structure on one or more surfaces of positive energy battery.The printing track then can be in multiple printers It is printed in skill, for example, utilizes multiple printing stations (printing station) and silk screen.In view of manufactured solar energy The quality of battery, printed printing track should align relative to each other during the typography.As an example, institute The electrical characteristics of manufactured solar cell, such as power output may be influenceed by stating the alignment of printing track relative to each other.

Further, it is a kind of manufacture solar cell equipment can have multiple treating stations, such as with along one transport Multiple printing stations of paths arrangement are sent, substrate is transported during manufacturing process along the transport path.With multiple places Manage the sizable installing space of the hold facility at station.Further, the equipment is also produced and for example had with operation and maintenance The cost of pass.

In view of described above, overcome at least some problems in this area for solar battery product in substrate On make the new method of silk-screen printing, make on substrate silk screen used in silk-screen printing for solar battery product and for the sun The equipment that energy battery product makees silk-screen printing on substrate is favourable.Specifically, present disclosure aims at offer one The method that kind makees silk-screen printing for solar battery product on substrate, it realizes the improvement pair of printing track relative to each other Together.Further, aiming at for present disclosure provides a kind of equipment for making silk-screen printing on substrate, and it, which has, reduces number The treating stations of amount.

The content of the invention

In view of described above, there is provided make the method for silk-screen printing on substrate for solar battery product, for Solar battery product and make the silk screen used in silk-screen printing on substrate, and for solar battery product and on substrate Make the equipment of silk-screen printing.From claims, specification and accompanying drawing, further aspect, the advantage of present disclosure With being characterized in obviously.

According to the one side of present disclosure, there is provided make the side of silk-screen printing on substrate for solar battery product Method.Methods described using silk screen in the first typography on the substrate carry out First Line pattern printing, by institute State substrate to move away from each other with the silk screen, and the substrate and the silk screen are moved back to toward each other, and described in utilization Silk screen carries out the printing of the second line pattern in the second typography on first line pattern.

According to the another aspect of present disclosure, there is provided make silk-screen printing on substrate for solar battery product Method.Methods described using silk screen in the first typography on the substrate carry out First Line pattern printing, make The substrate is offset relative to each other with the silk screen, and utilizes the silk screen in the second typography in the First Line The printing of the second line pattern is carried out on pattern.

According to the another aspect of present disclosure, there is provided make silk-screen printing institute on substrate for solar battery product There are the fingers for solar cell to be printed the first configured silk-screen patterns and be directed to for silk screen, the silk screen The busbar (busbar) of solar cell and/or one or more redundant circuit are printed the second configured silk-screen patterns At least one.The silk screen can use in the method and apparatus of present disclosure.

According to the another aspect of present disclosure, there is provided carry out silk-screen printing on substrate for solar battery product Equipment.The equipment includes silk screen and conveyer, and the silk screen, which is configured for use on the substrate, carries out first The printing of line pattern and the second line pattern, the conveyer, which is configured for use in, to have the First Line of printing thereon The substrate of pattern is moved away from each other with the silk screen, and the substrate and the silk screen are moved back to toward each other, with described The printing of second line pattern is carried out on first line pattern.

According to the aspect of present disclosure, there is provided carry out setting for silk-screen printing on substrate for solar battery product It is standby.The equipment includes silk screen and conveyer, and the silk screen is configured for use in progress First Line pattern on the substrate With the printing of the second line pattern, the conveyer, which is configured for use in, to have the first line pattern of printing thereon Substrate is offset relative to each other with the silk screen, to carry out the printing of second line pattern on first line pattern.

Embodiment further relates to the equipment for carrying out disclosed method, and including for carrying out each narration method The part of appliance of aspect.The mode that hardware component can be utilized in terms of these methods, the computer programmed by appropriate software, by Practiced by this two kinds any combination or any other method.In addition, further relate to be used to grasp according to the embodiment of present disclosure The method for making to describe equipment.It includes carrying out the method aspect of each function of equipment.

Brief description of the drawings

Therefore, the mode for making present disclosure features described above to be understood in detail, for relevant summarized briefly above The particularly narration of disclosure, is obtained using the mode of reference implementation mode.The accompanying drawing then embodiment party with present disclosure Formula is relevant, and in described below：

Fig. 1 illustrates the flow chart of the method according to the embodiment described herein, and methods described is to be directed to solar cell Product and make silk-screen printing on substrate；

Fig. 2 is illustrated according to the embodiment described herein, in the first line pattern and the second line pattern printed on substrate Schematic diagram；

Fig. 3 illustrates the plan using the solar cell manufactured by the method according to the embodiment described herein；

Fig. 4 is illustrated according to the embodiment described herein, used in the silk-screen printing technique of solar cell manufacture Silk screen schematic diagram；

Fig. 5 (a) and Fig. 5 (b) is illustrated according to the embodiment described herein, in the first typography and the second typography The schematic diagram of the positioning of middle silk screen and substrate；

Fig. 6 is shown in the side cross-sectional view of the fingers on substrate；

Fig. 7 illustrates the fingers of solar cell and the plan of busbar according to the embodiment described herein；

Fig. 8 is illustrated according to the embodiment described herein, the first typography and second for solar cell manufacture The figure of printing parameter adjustment in typography；

Fig. 9 is illustrated according to the embodiment described herein, is printed for solar battery product on substrate The schematic diagram of equipment；With

Figure 10 is illustrated according to another embodiment described herein, is printed for solar battery product on substrate The schematic diagram of the equipment of brush.

Embodiment

The various embodiments of present disclosure are reference will now be made in detail to now, and one or more example is described in accompanying drawing. Accompanying drawing it is described below in, identical reference represents identical part.In general, just for individual embodiments Difference is described.Each example is provided in a manner of present disclosure, and these examples are not intended as present disclosure Limitation.Further, illustrate or describe the part for turning into embodiment feature can also be used for other embodiment or It is used in combination with other embodiment, and forms further embodiment.It is expected that this specification includes these modifications and become Change.

In solar cell manufacture, dual printing can be used to print line pattern on top of each other.As one Example, the second line pattern can be superimposed on the top of the first line pattern, to form the fingers of solar cell.Dual print Brush can form the finger width of reduction and the fingers thickness of raising.The printing of first line pattern and the second line pattern Printing can be carried out using two different silk screens in two different printing stations.As an example, the first printing station is used First line pattern is printed, to form the first layer of the fingers.Second line pattern is printed using the second printing station, To form the second layer of the fingers on the top of the first layer.

The dual typography can use multiple silk screens, and first is used such as in the printing of first line pattern Silk screen, and the second silk screen is used in the printing of second line pattern.First silk screen can not with second silk screen Matching, for example, due to the deformation of silk screen and/or the manufacturing tolerance of silk screen.Second line pattern is relative to the first line pattern Position may be inaccurate, and the quality of manufactured solar cell may reduce.Further, substrate and silk screen be relative to each other The first registration process can be carried out before the printing of the first line pattern.In addition, can be with before the printing of the second line pattern Carry out the second registration process.Registration process can utilize for example dual vision system construction, and one is used for the print of the first line pattern Brush, and another one is used for the printing of the second line pattern.There is provided dual vision system makes the system tray of solar cell manufacturing equipment Structure complicates.Further, cost, such as manufacturing cost and maintenance cost are improved.

Present disclosure provide it is a kind of for solar battery product and on substrate carry out silk-screen printing method, its Dual typography is carried out using single silk screen.Particularly, after First Line pattern printing, substrate and silk screen are relative to each other It is mobile, for example, to carry out the drying of the first line pattern.Substrate is positioned relative to each other with silk screen, the second line pattern then utilize with Identical silk screen in First Line pattern printing and be superimposed upon on first line pattern.

As an example, after the First Line pattern printing, substrate moves away from each other with silk screen, for example, carrying out The drying of first line pattern.Substrate is then moved back to toward each other with silk screen, and the second line pattern then utilizes and First Line pattern printing In identical silk screen and be superimposed upon on first line pattern.In another example, after the printing of first line pattern, Substrate can be offset relative to each other with silk screen, and the second line pattern is superimposed using silk screen identical with First Line pattern printing On first line pattern.

Caused by the manufacturing tolerance described above for being related to screen warpage and/or silk screen being avoided using identical silk screen Mismatch shortcoming.Second line pattern can be accurate relative to the positioning of the first line pattern, and this is particularly advantageous for slim fingers. The quality of manufactured solar cell can be improved.Further, in some embodiments, it is convenient to omit in the second line Before pattern printing, the step of substrate is alignd relative to each other with silk screen.It need not provide and be regarded for the second the dual of printing Feel system, and the system architecture of the manufacturing equipment for solar cell can be simplified.In addition, using according to the implementation described herein The method and apparatus of mode, the amount of printing paste can be reduced.

Fig. 1 illustrates the flow chart of the method 100 according to the embodiment described herein, and methods described is directed to solar cell Product and silk-screen printing is carried out on substrate.Fig. 2 is illustrated according to the embodiment described herein, in first printed on substrate 10 The schematic diagram of the line pattern 220 of line pattern 210 and second.

Methods described is included in block 110 carries out the first line chart on the substrate 10 using silk screen in the first typography The printing of case 210.In block 120, substrate 10 and silk screen move away from each other, and metacoxal plate 10 moved toward each other with silk screen Return.In block 130, the second line pattern 220 be printed in using the silk screen in the second typography the first line pattern 210 it On.As an example, the first line pattern 210 can be the fingers of solar cell and/or the first layer of busbar.Second line chart Case 220 can be the second layer of the fingers and/or busbar.First line pattern 210 can directly print on the substrate 10. The printing material used in one line pattern 210 and the printing of the second line pattern 220 can include silver or can be silver.According to some implementations Mode, it can be combined with the other embodiment described herein, the printing material may be selected from by based on silver, aluminium, copper, tin, nickel, The cream of silicon is combined formed group with it.

The use of identical silk screen is special in dual printing for printing for the slim fingers of solar cell Favourable.As an example, formed by the first line pattern 210 with the second line pattern 220 being superimposed upon on the first line pattern 210 Fingers width 230 can be less than 100 microns, particularly less than 80 microns, and more specifically be less than 60 microns.By The thickness 240 for the fingers that first line pattern 210 is formed with the second line pattern 220 being superimposed upon on the first line pattern 210 can More than 15 microns, particularly more than 20 microns, and to be more specifically greater than 30 microns.

When refer to term " ... on " when, for example, the second line pattern 220 is on the first line pattern 210, it should managed Solve as since substrate 10, the first line pattern 210 is printed on substrate 10, and the second line pattern 220 is in the first line pattern Printed after 210, therefore on the first line pattern 210 and on substrate 10.In other words, using term " ... on " order of pattern or printing layer printed by restriction, wherein starting point is substrate 10.This is not with solar cell Be described in a manner of reverse it is unrelated.

According to some embodiments, the second line pattern 220 be superimposed on the first line pattern 210 (or with the first line pattern 210 overlappings).As an example, the second line pattern 220 does not print on the substrate 10, but is printed on the first line pattern completely On 210 top.In other embodiments, the second line pattern 220 is partly superimposed upon on the first line pattern 210.Partly The example of the line pattern of superposition, reference picture 7 is illustrated.

According to some embodiments, it can be combined with the other embodiment described herein, silk screen can include reticulate body, At least one of mask to print, sheet material, metal sheet, plastic sheet, sheet material, sheet metal and plastic plate.In some implementations In mode, silk screen limit corresponding to structure on the substrate 10 to be printed silk-screen patterns or feature, wherein silk-screen patterns or Feature can include at least one of at least hole, slit, otch or other holes (aperture).In some embodiments, Such as printing equipment and mesh contacts of scraper plate (squeegee) etc, wherein printing equipment promote material to pass through silk screen to be printed On brush to substrate 10, and especially by this some holes, for example, this some holes limits the first line pattern 210 and the second line pattern 220。

In some embodiments, silk screen has the first silk screen of the fingers printing for being configured to carry out solar cell Pattern, and it is configured to carry out the second silk-screen patterns of the busbar printing of solar cell.First silk-screen patterns and second Silk-screen patterns can be used for the line pattern of continuous printing first and the second line pattern.According to some embodiments, silk screen has the 3rd line Pattern, it is configured to the printing for carrying out one or more redundant circuits of solar cell.

According to the substrate 10 of the embodiment described herein can include at least one conductive material, particularly silicon or aluminium, Sheet material, chip, paper tinsel, semiconductor wafer, solar cell wafer, silicon solar cell chip or green tape circuit board (green- Tape circuit board), it can be particularly for forming solar cell.

Substrate 10 and silk screen are moved away from and are understood to be substrate 10 and silk screen each other after the first typography Space and/or physical separation.As an example, substrate 10 can be through being spatially separating, to have such as one between with silk screen Millimeter or the distance more than one millimeter or one centimetre or more than one centimetre.By substrate 10 and silk screen point after the first typography From substrate 10 can be avoided to be bonded to each other with silk screen after the first typography, for example, because printing on the substrate 10 the The drying of one line pattern 210 and be bonded.

Substrate 10 is moved back to be understood to be toward each other with silk screen and positions substrate 10 relative to silk screen, therefore can be real Row is used for the second typography for forming the second line pattern 220.As an example, substrate 10 can be located in below silk screen, because This can carry out the second typography.In some embodiments, substrate 10 and the relative position of silk screen relative to each other, in the It is essentially identical or identical (identical) during one typography and the second typography.For the first printing It is essentially that identical or identical relative position causes the first line pattern 210 and second that technique uses with the second typography Line pattern 220 aligns relative to each other.As an example, before the printing of the second line pattern 220, it is not necessary to carry out for example using The extra registration process of vision system.However, present disclosure is not restricted to this, and according to some embodiments, second Registration process can be carried out before the printing of line pattern 220.

Term " being essentially identical or identical " is related in the first typography and the second typography, substrate 10 It is essentially identical or identical relative orientation with silk screen, wherein the tolerance at a distance of accurate identical or identical orientation In the range of skew be still regarded as " being essentially identical or identical ".The margin of tolerance can be for example any Positive/negative 50 microns in direction are (for example, in the direction extended along its length of the circuit parallel to the first line pattern 210 In), particularly in any direction in positive/negative 1 micron.

According to some embodiments, it can be combined with the other embodiment described herein, can be in the first typography Between the second typography, the one or more further processing of solar cell manufacture processing is carried out.As an example, too It is positive can the one or more of battery manufacture processing further processing can be moved away from each other and by base by substrate 10 and silk screen During plate 10 and silk screen are moved back to toward each other and/or between carry out.In some embodiments, the first line pattern 210 can be in It is dried between first typography and the second typography., for example, can be from the first line chart during drying process Case 210 removes solvent.

According to some embodiments, it can be combined with the other embodiment described herein, and method 100 is included in First Line The drying of the first line pattern 210 is carried out after the printing of pattern 210, and the second line is carried out after the printing of the second line pattern 220 At least one of the drying of pattern 220.As an example, the drying of the first line pattern 210 can move by substrate 10 and silk screen It is dynamic away from each other and during substrate 10 and silk screen are moved back to toward each other and/or between carry out.In the print of the second line pattern 220 The drying of the second line pattern 220 after brush can be carried out after the second typography.In order to carry out the second line pattern 220 Dry, substrate 10 can move away from each other again with silk screen.In some embodiments, substrate 10 can be moved into drying Stand, for example, including baking oven (oven), the first line pattern 210 and/or the second line pattern 220 are dried.

In some embodiments, the drying of at least one of the first line pattern 210 and the second line pattern 220 includes conduction Heating, Convective Heating, radiant heating and its at least one being combined.As an example, the first line pattern 210 and second The drying of at least one of line pattern 220 is included laser and heats and added using the heater being included in substrate support At least one of heat.Reference picture 9 and Figure 10 are described in more detail for this.According to some embodiments, the first line pattern 210 and/ Or second drying time of line pattern 220 be at least 1 second.As an example, the first line pattern 210 and/or the second line pattern 220 Drying time can be in the range of 1 to 20 seconds, particularly in the range of 1 to 10 seconds, and more particularly at 5 to 10 seconds In the range of.In some embodiments, it is convenient to omit the drying of the second line pattern 220.

Substrate 10 is moved relative to each other with silk screen, such as moved away from substrate 10 and silk screen each other and by substrate 10 are moved back to toward each other with silk screen, are related to the relative movement of substrate 10 and silk screen.As an example, substrate 10 can be moved and Silk screen keeps fixing, or silk screen can the passively holding fixation of substrate 10.In other instances, substrate 10 and silk screen are all moved It is dynamic, for example, it is simultaneously displaced or sequentially moves.

In some embodiments, substrate 10 and silk screen are moved away from each other and by substrate 10 and silk screen toward each other It is moved back to, including substrate 10 is moved away from into silk screen, and substrate is moved back to towards silk screen, for example, is filled using one kind transmission Put and move.While substrate 10 is by movement, silk screen can be fixed.As an example, the first typography and second Typography can be carried out in identical printing station.Printing station can have the silk screen positioned at fixed position.Substrate 10 can utilize example Printing station or the printing station is moved away from as described in being shifted to the conveyer.

According to some embodiments, it can be combined with the other embodiment described herein, and the conveyer can wrap Include at least one of turntable (rotary table) and movable substrate support member.In some embodiments, by substrate 10 Moving away from silk screen and substrate 10 is moved back into silk screen includes the rotation of the turntable and the movable substrate support member At least one mobile.Reference picture 9 and Figure 10 are provided to the example of the movement of the conveyer and substrate 10.

According to further embodiment, by substrate 10 and silk screen move away from each other and by substrate 10 and silk screen towards that This is moved back to, including silk screen is moved away from into substrate 10 and is moved back to silk screen towards substrate 10.As an example, the first typography It can be carried out from the second typography in different printing stations, such as the first printing station and use for the first typography In the second printing station of the second typography.Silk screen can move to the second printing station with substrate 10 from the first printing station.Solar energy The further processing of one or more of battery manufacture processing then can during substrate 10 is moved to second station from first stop and/ Carried out between or.As an example, drying process can be carried out to remove solvent from the first line pattern 210.

According to some embodiments, it can be combined with the other embodiment described herein, and method 100 further comprises Before the printing of first line pattern 210, substrate 10 is alignd relative to silk screen.In some embodiments, substrate 10 relative to The alignment of silk screen can be carried out only before the first typography, and can be omitted before the second typography.It is real as one Example, substrate 10 and the relative position of silk screen relative to each other can be substantial during the first typography and the second typography It is identical or identical.Identical relative position is used to cause the first line chart for the first typography and the second typography Case can be alignd relative to each other with the second line pattern.Before the second typography, it is not necessary to carry out extra registration process.

In some embodiments, before the printing of the first line pattern 210, substrate 10, can be with relative to the alignment of silk screen Carried out using such as vision system, the vision system includes one or more cameras.According to some embodiments, the side Method further comprise the second line pattern 220 print before, substrate 10 relative to silk screen alignment.In other embodiments, Alignment of the substrate 10 relative to silk screen is not carried out before the printing of the second line pattern 220.In the printing and the of the first line pattern 210 Before the printing of two line patterns 220, any one of the registration process, the photograph for being configured to shoot substrate 10 can be used The camera of piece is carried out.Processing unit can assess substrate 10 relative to such as substrate support, printing equipment and silk screen at least The position of one.Processing unit can adjust the position of at least one of substrate 10, substrate support and silk screen, to adjust base The relative position of plate 10 and silk screen.

According to the embodiment described herein, the method for carrying out silk-screen printing on substrate for solar cell can The construction in a manner of using computer program, software, computer software product and CCU, it can have CPU, storage Device, user interface and input and output device, it communicates with for handling the corresponding component of the equipment of large-area substrates.

The embodiment of present disclosure can be used for the printing in the enterprising line pattern in the preceding surface of solar cell.So And present disclosure is not restricted to this, and the embodiment of present disclosure can be used for using identical silk screen in solar energy In at least one of a front surface and a rear surface of battery, the printing of line pattern is carried out.As an example, methods described can with equipment Applied in the manufacture processing of double-sided solar battery.

Fig. 3 illustrates the plan using the solar cell 300 according to manufactured by the embodiment described herein.

Solar cell 300 includes multiple fingers 310 and two or more busbars 320.In solar cell In 300, light is absorbed and causes charge carrier to flow to busbar 320 along fingers 310, and busbar 320 can be used as too The connection end point between each solar cell 300 in positive energy battery module.According to some embodiments, solar cell 300 can include one or more redundant circuits 330.One or more redundant circuits 330 can be provided in the connection of substrate 10 and refer to The marginal portion of the end in shape portion 310.Redundant circuit 330 can provide the bypass of the charge carrier flowed along fingers 310, Such as when (electricity) interruption in a fingers 310 be present or block.

In some embodiments, the first line pattern and the second line pattern are provided in fingers 310, busbar 320 and one At at least one of individual or multiple redundant circuits 330.As an example, at least one of the first line pattern and the second line pattern bag Two or more circuit sub-patterns are included, wherein described two or more circuit sub-patterns are selected from by the following group formed：The sun Can the fingers of battery, the busbar of solar cell, the fingers redundant circuit of solar cell and its any combinations.

According to some embodiments, fingers 310, busbar 320 and one or more redundant circuits 330 can be utilized only Single silk-screen printing.Fingers 310, busbar 320 and one or more redundant circuits 330 can be in the first typographies and In two typographies, for example it is printed in identical printing station.According to some embodiments, it can be with describing herein Other embodiment combines, and the first line pattern can form the first layer of fingers 310, and be formed selectively busbar 320 and/or the first layer of one or more redundant circuits 330.Second line pattern can form the second layer of fingers 310, with And it is formed selectively the second layer of busbar 320 and/or one or more redundant circuits 330.As an example, fingers 310th, the first layer of busbar 320 and one or more redundant circuits 330 can be printed on substrate 10 in the first typography On.The second layer of fingers 310, busbar 320 and one or more redundant circuits 330 is then printed in the second typography On first layer.

In some embodiments, fingers 310 by the first line pattern and be printed on the first line pattern second Line pattern is formed.Busbar 320 can be formed by the first line pattern and/or the second line pattern.In other words, busbar 320 can It is printed in the first typography, in the second typography or in two typographies.One or more redundant circuits 330 can be formed by the first line pattern and/or the second line pattern.In other words, one or more redundant circuits 330 can be in the first print It is printed in dataller's skill, in the second typography or in two typographies.

As an example, in some embodiments, the first typography includes the printing of the first line pattern, the first line chart Case has the fingers 310, busbar 320 and one or more redundant circuits 330 of solar cell, wherein at least one Or multiple redundant circuits 330 do not print in the second typography.It is for example right that this selective typography can utilize Carried out in the adjustment of one or more printing parameters, as reference picture 8 is illustrated.

Using identical silk screen and optionally only using single printing station progress fingers 310, busbar 320 and one The printing of individual or multiple redundant circuits 330 can reduce the quantity of printing station.The productivity ratio of system can be improved, especially because The printing of fingers 310, busbar 320 and one or more redundant circuits 330 is only carried out using two typographies.

Fig. 4 is illustrated according to the embodiment described herein, is configured in the silk-screen printing technique of solar cell manufacture Silk screen 410 schematic diagram.Fingers that the silk screen can be configured illustrate in Fig. 3 example, busbar and one Or the printing of multiple redundant circuits.

According to some embodiments, it can be combined with the other embodiment described herein, silk screen 410 limit pair with treat by The structure (for example, the first line pattern and second line pattern) that is printed on substrate corresponding silk-screen patterns 420 or feature.Silk screen Pattern 420 or feature may include at least one of hole, slit, otch or other holes.Silk-screen patterns 420 are limited respectively first The first line pattern and the second line pattern to be printed on substrate in typography and the second typography.Fig. 4 example is painted Show multiple parallel holes 430, it provides the first line pattern and the second line pattern.A kind of printing equipment and silk screen of such as scraper plate etc Contact, and moved along print direction 425.Printing equipment promotes material printed on the substrate 10 by silk screen 410, and especially It is printed by silk-screen patterns 420.The material may include silver.

In some embodiments, silk screen 410 has the first of the fingers printing for being configured to carry out solar cell Silk-screen patterns, and it is configured to carry out the second silk-screen patterns of the busbar printing of solar cell.In some embodiments In, silk screen 410 has the 3rd silk-screen patterns of the one or more redundant circuits printing for being configured to carry out solar cell.The 3rd silk-screen patterns of one silk-screen patterns, the second silk-screen patterns and selectivity can be used for sequentially printing the first line pattern and the Two line patterns.

In some embodiments, can be at least some middle offer reticulate bodies or net in the hole 430 of pattern silk screen 420 Hole, for example, being provided in multiple parallel holes 430 of the first line pattern of offer and the second line pattern.Reticulate body or mesh can by A plurality of first wiring 442 and provided in a plurality of second wiring 444 of second direction extension that first direction extends.Reticulate body or Mesh can be the interwoven mesh body or mesh of a plurality of wiring.A plurality of first wiring 442 can be micro- with 10 with a plurality of second wiring 444 Rice is to the diameter in 30 micrometer ranges, and particularly in 15 microns to 20 micrometer ranges.A plurality of first wiring 442 with it is a plurality of Second wiring 444 limits multiple openings 446 between.The opening can have the chi in 1 micron to 500 micrometer ranges Very little (for example, average diameter), particularly in the range of 10 microns to 150 microns, and more particularly at 15 microns to 100 In the range of micron.As an example, the size may be about 60 microns.

In some embodiments, the first direction of the first wiring 442 can be different from the second direction of the second wiring 444 's.As an example, first direction can substantially be perpendiculared to one another with second direction.Term " substantial orthogonality " is related to such as first Direction and the substantially perpendicular orientation of second direction, wherein have the skew of a little angle between precise perpendicularity orientation, such as at most To 10 ° or even still it is regarded as " substantial orthogonality " to 15 °.

In some embodiments, first direction and second direction can be relative to the holes 430 of silk-screen patterns 420 along length Bearing of trend is spent to tilt, for example, relative to the first line pattern first line and/or the second line pattern the second circuit along length Bearing of trend is spent to tilt.As an example, first direction and second direction can be relative to the holes 430 of pattern 420 along length Bearing of trend tilts the angle in the range of about 20 degree to about 60 degree.As an example, first direction and second direction can be with About 22.5 degree of inclination, about 30 degree, or about 45 degree, as shown in the example of fig. 4.

Fig. 5 (a) and Fig. 5 (b) is illustrated according to the embodiment described herein, in the first typography and the second typography In silk screen 410 and substrate 10 positioning schematic diagram.

In silk-screen printing technique silk screen 410 during use, silk screen may because of printing material local stoppages.As one One or more of example, reference picture 4, reticulate body or mesh provided in the hole 430 of silk-screen patterns 420 opening 446 Probably due to dried printing material and block.The wire part of blocking may cause to print in pattern on the substrate 10 It is disconnected, such as interruption of the first line pattern and the second line pattern.As an example, the wire part blocked may cause line pattern In interruption, its prevent electric current flowing pass through disrupted circuit.

According to some embodiments, it can be combined with the other embodiment described herein, in first typography (Fig. 5 (a) in) substrate 10 relative to silk screen the first relative direction with the second typography (Fig. 5 (b)) substrate 10 relative to silk Second relative direction of net can be different.As an example, the first relative direction and the second relative direction can be offset from one another (with Reference 530 indicates).

As an example, according to the further aspect of present disclosure, there is provided one kind for solar battery product and in The method that silk-screen printing is carried out on substrate.Methods described is entered using silk screen 410 in the first typography on substrate 10 The printing of the line pattern of row first, substrate 10 and silk screen 410 are offset relative to each other, and (identical) silk screen 410 described in utilization The printing of the second line pattern is carried out on first line pattern in the second typography.When in present disclosure content In use, term " skew " and " deflection " also are taken to as " transfer " (shifted) or " displacement " (displaced).

By make substrate 10 and silk screen 410 after the first typography and the second typography before it is inclined relative to each other (transfer, displacement) is moved, can reduce or even avoid printing the interrupt situation in line pattern.As an example, work as wire part When being blocked because of (dried) printing material, in there may be in the first line pattern printed in the first typography It is disconnected.When identical wire part is still to block during the second typography, the second line pattern, which may also have, to interrupt.So And the interruption in the second line pattern occurs will have skew situation relative to the interruption occurred in the first line pattern.Change sentence To talk about, the second line pattern provides bridge joint on the interrupt unit of the first line pattern, and in the pattern of printing, such as in the sun Interruption can just be not present in the fingers of battery.This can improve the efficiency of manufactured solar cell.

Further, substrate 10 and silk screen 410 is made to offset relative to each other that silk screen can be made between the typography The number of 410 cleaning treatments reduces, because possible interruption can be healed because of the second line pattern in the first line pattern (bridge joint), vice versa.Therefore the maintenance downtime of such as solar cell manufacturing equipment can be reduced, and improves yield.

In some embodiments, the direction of the skew (being indicated in Fig. 5 with reference " 520 ") is substantial parallel In the first direction extended along length of one or more first line of the first line pattern.One or more first line Can be the fingers of solar cell.As an example, edge of the skew substantially parallel to the fingers of solar cell Length bearing of trend.Term " substantial parallel " is related to a kind of reality along length bearing of trend of such as offset direction and fingers Matter parallel orientation, wherein there is the skew of a little angle between exactly parallel orientation, such as up to 10 ° or even to 15 ° still It is regarded as " substantial parallel ".Term " extending along length " should be understood in the length direction of circuit, the first line pattern The extension of the circuit of (and second line pattern).The length of circuit means the longer dimension of circuit, and the width of wherein circuit means line The shorter size on road.

According to some embodiments, it can be combined with the other embodiment described herein, using substrate 10 and silk screen 410 modes for being in a direction substantially parallel to move in the plane on the surface of substrate 10 relative to each other provide skew, Yu Ji Will the first line pattern of printing and the second line pattern on the surface of plate 10.In some embodiments, substrate 10 and silk screen 410 are utilized Linear mobile offer skew relative to each other.Linear movement can be substantial parallel or substantially perpendicular to the first line pattern one The first of bar or a plurality of first line is along length bearing of trend.As an example, using being in a direction substantially parallel to solar cell Fingers moved along the linear of the substrate 10 in length bearing of trend and/or silk screen 410 to provide skew.

According to further embodiment, skew is provided using the two-dimensional movement of substrate 10 and silk screen 410 relative to each other. The two-dimensional movement can be the movement in the plane on the surface for being in a direction substantially parallel to substrate 10, on the surface of substrate 10 will printing First line pattern and the second line pattern.As an example, using with substantially parallel and perpendicular to the first line pattern one The first of bar or a plurality of first line along the substrate 10 of the mobile component of length bearing of trend and/or the two-dimensional movement of silk screen 410, Skew is provided.

In some embodiments, skew (for example, by reference " 530 " and the displacement indicated) at 10 microns extremely In the range of 1000 microns, particularly in the range of 10 microns to 500 microns, and more particularly at 100 microns to 200 In the range of micron.As an example, skew 430 can be at least 10 microns, and more particularly be at least 50 microns.

In some embodiments, substrate 10 is made to be filled with the skew of silk screen 410 relative to each other using such as transmission Putting moves substrate 10.The example reference picture 9 and Figure 10 moved for conveyer with substrate 10 illustrates.Moved in substrate 10 Silk screen 410 can be fixed when dynamic.As an example, the first typography can be in identical printing station with the second typography Middle implementation.Printing station can have the silk screen 410 being in a fixed position.It can be moved using such as movable substrate support member To provide skew, substrate 10 is arranged on the movable substrate support member substrate 10.

In other embodiments, substrate 10 and the skew of silk screen 410 relative to each other is made to include the movement of silk screen 410. In actuator movement of the silk screen 410 using such as such as linear motor etc, substrate 10 can be fixed.As an example, First typography can be carried out with the second typography in identical printing station.Printing station, which can have, movably to be carried For silk screen 410 therein.

According to some embodiments, it can be combined with the other embodiment described herein, in the first typography and the The one or more further processing of solar cell manufacture processing can be carried out between two typographies, as reference picture 1 is chatted State.As an example, further processing can be in substrate 10 and silk screen 410 for the one or more of solar cell manufacture processing Carried out before or after offsetting relative to each other.In some embodiments, can be in the first typography and the second printer The first line pattern is dried between skill.The second line pattern can be carried out into selectivity after the second typography to dry. During drying process, for example, solvent can be removed from the first line pattern 210.In some embodiments, the first line chart The drying of at least one of case and the second line pattern includes laser and heats or utilize included heater in substrate support At least one heated.According to some embodiments, the drying time of the first line pattern and/or the second line pattern is at least 1 second.As an example, the drying time of the first line pattern and/or the second line pattern in the range of 1 second to 20 seconds, specifically It is in the range of 1 second to 10 seconds, and more particularly in the range of 5 seconds to 10 seconds.

Fig. 6 illustrates the side cross-sectional view of the circuit of the first line pattern printed on the substrate 10.The circuit can be the sun The fingers 310 of energy battery.

The circuit of the first printed line pattern can have the thickness of change in the first typography.It is real as one Example, the thickness of the circuit of the first line pattern (sinusoidal) can be changed in a manner of near sinusoidal.The thickness of change be probably because For caused by the structure of silk screen, specifically as caused by the mesh or reticulate body provided in hole as shown in Figure 4.As One example, the circuit of the first line pattern can have maximum 610 and minimum value 620.Maximum 610 and minimum value 620 can be with With a cycle 630.

Present disclosure can apply the offset manner as described in reference picture 5 (a) and Fig. 5 (b), carry out the first line pattern Line thicknesses it is smooth.The second line pattern being printed on the first line pattern can have similar thickness change.According to some realities Mode is applied, it can be combined with the other embodiment described herein, and skew may be selected such that the thickness in the second line pattern Degree change can at least partially compensate for the thickness change in the first line pattern.As an example, the minimum value of the second line pattern Positioned at the top of the maximum of the first line pattern, and the maximum of the second line pattern is located at the upper of the minimum value of the first line pattern Side.

In some embodiments, skew can be selected according to the cycle 630 of thickness change.As an example, skew It may correspond to the cycle 630 of the thickness change of the first line pattern.According to some embodiments, the thickness of the first line pattern can be measured The cycle of change is spent, for example, (in-situ) in situ measurement is carried out between the first typography and the second typography. Then can determine to offset according to measurement result.In other embodiments, the cycle 630 of the first line pattern can be in calibration measurement In in advance measurement or can be estimated.Then the cycle of this determination can be used, it is predetermined inclined to apply for the second typography Move.

Fig. 7 is illustrated according to the embodiment described herein, in the first line pattern and the second line pattern that are printed on substrate 10 Plan.First line pattern and the second line pattern can form the fingers 310 and busbar 320 of solar cell.Such as scrape The printing equipment of plate etc and can move with mesh contacts along print direction 340, to carry out the first line pattern and the second line The printing of pattern.

The busbar 320 of solar cell is included in the Part I 322 that is printed in the first typography and second The Part II 324 printed in typography.In other words, busbar can two step process printed, wherein first 322 are divided to be printed in the first typography, and Part II 324 prints in the second typography, Part I 322 can be to converge The first half part of bar is flowed, and Part II 324 can be the second half part of busbar.Part I 322 and Part II 324 It can be printed upper on the surface of the substrate 10 and be adjacent to each other.In other words, Part I 322 and Part II 324 be not Printing is on top of each other.Part I 322 can be in contact with each other with Part II 324.As an example, Part II 324 can be partly overlapping with Part I 322.

According to some embodiments, it can be combined with the other embodiment described herein, and the first typography includes the The printing of one line pattern, the first line pattern have a Part I 322 of fingers 310 and busbar 320, and the second typography Include the printing of the second line pattern, the second line pattern has the Part II 324 of fingers 310 and busbar 320.Busbar 320 Part I 322 and the Part II 324 of busbar 324 can be located adjacent one another on substrate.Part I 322 and Two parts 324 can be in contact with each other, to provide electrical contact between Part I 322 and Part II 324.Selectively, Part I 322 can partially overlap each other with Part II 324, further to improve Part I 322 and Part II Electrical contact between 324.

Part I 322 can have the substantially edge in the direction of print direction 340 with Part II 324 Length direction extends.As an example, Part I 322 can have substantially perpendicular to fingers with Part II 324 Extension along its length in 310 directions extended along its length.Likewise, Part I 322 and Part II 324 can be with With the extension in the width direction being in a direction substantially parallel in the direction of print direction 340.First width of Part I 322 with Second width of Part II 324 can be substantially the same.Term " substantially the same " is related to Part I 322 and Part II 324 be essentially identical width, wherein being still regarded as " essence at a distance of accurate same widths for the skew in the margin of tolerance It is upper identical ".For example, the margin of tolerance can be in busbar middle 50 microns of plus/minus in the width direction, and particularly exist Busbar middle 10 microns of plus/minus in the width direction.In other instances, the width of Part I 322 and Part II 324 can be It is different.

In some embodiments, the skew between the first relative direction and the second relative direction can be with Part I 322 Width it is corresponding.As an example, the skew between the first relative direction and the second relative direction can be with the width of busbar 320 The half of degree is corresponding.According to some embodiments, offset in the range of 250 microns to 1500 microns, it is particularly micro- 500 Rice is more specifically about 750 microns in the range of 1000 microns.As an example, about 750 microns of skew can It can cause busbar 320 that there is about 1500 microns of width.

Skew can be utilized to reduce for example in line pattern in the printing for carrying out busbar 320 along width with two step process Circuit in interruption and/or reduce do not carry out redundancy busbar printing when line pattern thickness change or reduce in substrate On " blind (blind) " busbar or circuit.Further, the length-width ratio (aspect ratio) of busbar 320 can be improved. It can omit for printing the single printing station of busbar 320, and the quantity of printing station can be reduced.

Fig. 8 is illustrated according to the embodiment described herein, the first typography and second for solar cell manufacture The figure of printing parameter adjustment in typography.X-axis indicates position of the printing equipment relative to silk screen and/or substrate.X directions Also referred to as " print direction ".During y-axis is indicated in the first typography (Fig. 8 upper graphics) and in the second typography Printing parameter applied in (Fig. 8 INFERIOR GRAPHs).The printing parameter can be the printing equipment of such as scraper plate etc to silk screen And/or substrate pressure applied P.

According to some embodiments, it can be combined with the other embodiment described herein, there is provided one or more printing The change (for example, real-time change during printing) of parameter.In some embodiments, one or more of printing parameters Including scraper plate relative to the angle of silk screen, scraper plate relative to the translational speed of silk screen, and scraper plate acted on silk screen, on substrate At least one of and/or pressure on substrate support or strength.By before printing or printing during control or adjustment institute At least one of printing parameter is stated, such as different printing conditions can be provided in different net areas.As an example, At least one printing parameter of one or more of printing parameters can it is controlled so as to by printing material print to (or transfer Extremely) on substrate, or printing material is not printed to (or being transferred to) substrate.

According to some embodiments, it can be combined with the other embodiment described herein, and scraper plate is acted on silk screen Pressure can be by controlling scraper plate to be adjusted relative to the distance (interval (snap off)) of silk screen.As an example, scraper plate can To be moved in the direction perpendicular to silk screen.According to some embodiments, it can be combined with the other embodiment described herein, Scraper plate can change relative to the distance of silk screen from about+20 millimeters can be from about+5 millimeters to about -50 millimeters, and specifically Change to about -35 millimeters, wherein when it is not deformed because of the contact with the silk screen of such as scraper plate, the silk screen Surface is positioned at 0 millimeter.As an example, when scraper plate is positioned at+5 millimeters, silk screen pushes (or deformation) 5 towards substrate Millimeter, wherein when scraper plate is positioned at -35 millimeters, it is positioned at the distance that silk screen is 35 millimeters.

In some embodiments, one or more of printing parameters in the first typography are selected such that print Brush material provides in the substantive complete area of the silk-screen patterns of First Line pattern printing in silk screen and is printed to (or being transferred to) base On plate.In other words, complete first line pattern substantially limited by silk-screen patterns is printed on substrate.It is real as one Example, the pressure P that scraper plate is acted on silk screen is maintained on printing level, therefore printing material will pass through silk screen and be transferred to base Plate.The pressure can be essentially constant, (being indicated with " P0 ") as shown in Fig. 8 upper graphic shown in property.Accompanying drawing mark Note 810 then indicates the position of the redundant circuit shown as depicted in fig. 3.

One or more of printing parameters in second typography are selected such that choosing of the printing material in silk screen Select in region on printing to (or being transferred to) substrate.In other words, the one of the second line pattern only limited by silk-screen patterns Part is printed on substrate.As an example, the fingers and remittance of pressure P that scraper plate is acted on silk screen in solar cell Flow and be maintained in the region of bar on printing level, and be maintained in one or more lands under printing level.Refer to Shape portion and busbar have double-decker.Redundant circuit can only have the individual layer printed in the first typography.

The printing of line pattern is carried out using at least one printing parameter adjusted in one or more of printing parameters, is permitted Perhaps using skew to reduce interruption in the circuit of such as line pattern and/or in the case where being printed without dual redundant circuit Reduce the thickness change of line pattern.

Fig. 9 is illustrated according to the embodiment described herein, is printed for solar battery product on substrate The schematic diagram of equipment 900.

Equipment 900 includes silk screen and conveyer, and the silk screen, which is configured on substrate, carries out First Line pattern and the The printing of two line patterns, the conveyer are configured to the substrate for being printed with the first line pattern thereon is relative with the first silk screen In moving each other.As an example, the conveyer is configured to that the substrate and first of the first line pattern will be printed with thereon Silk screen is moved away from each other, and substrate and the first silk screen are moved back to carry out the second line chart on the first line pattern toward each other The printing of case.In further example, the conveyer be configured to be printed with thereon the substrate of the first line pattern with Silk screen is offset relative to each other, to carry out the printing of the second line pattern on the first line pattern.

In some embodiments, equipment 900 includes multiple treating stations, such as printing station 910, dry station 920 and one Individual or multiple further treating stations 930, such as another printing station, inspection post and another dry station at least one.Silk screen carries For in printing station 910.Dry station 920 can be configured with to the first line pattern being printed in printing station 910 on substrate and/ Or second line pattern be dried.Dry station 920 for example may include baking oven.One or more of further treating stations Another printing station can be included, it is configured to that busbar for example is printed on into the substrate with the fingers being printed thereon On.Inspection post can be configured to carry out quality control to the line pattern being printed on substrate.As an example, inspection post can wrap Vision system is included, it includes one or more cameras.As an example, camera can shoot the substrate for being printed with line pattern thereon Or the photo of some of substrate.Processing unit can determine some of line pattern or line pattern relative to the spy of substrate Levy structure (for example, edge) and/or relative to each other between position.Processing unit can determine the product of printed line pattern Matter, and selectively determine whether discharge (dump) described substrate.

Conveyer is configured to moving substrate between at least some treating stations.As an example, conveyer is through matching somebody with somebody Put (to be indicated from the moving substrate of printing station 910 to dry station 920 with arrow 940), to carry out the drying of the first line pattern.Transmission Device is configured to that substrate is moved back to and (indicated with arrow 950) from dry station 920 towards printing station 910, to carry out the second line chart The printing of case.Conveyer can be further configured to from the moving substrate of printing station 910 to from one or more further 930 (being indicated with arrow 960) of reason station, to carry out such as quality control, further printing and/or further drying process At least one of.

According to some embodiments, it can be combined with the other embodiment described herein, and printing station 910 can be the first print Brush station, it is configured to the printing for carrying out the first line pattern, and one or more further printing stations 930 may include the second print Brush station, it is configured to the printing for carrying out the second line pattern.Conveyer can be configured to be printed in the first printing station and second Mobile silk screen between standing.As an example, the first line pattern can be printed on substrate in the first printing station, and silk screen can quilt It is moved to the second printing station.Selectively, conveyer can further be configured to substrate being moved to dry station 920 to enter The drying of the line pattern of row first, and substrate is moved to the second printing station, to print the second line chart in the top of the first line pattern Case.

According to some embodiments, it can be combined with the other embodiment described herein, and substrate is arranged at substrate support On part, such as it is arranged on movable substrate support member (" shuttle motivation structure (shuttle) ").In some embodiments, substrate Support member can include reticulate body or other support members, in can place substrate on the reticulate body or other support members to carry out silk Wire mark brush.In order to carry out the printing of line pattern, the printing equipment of such as scraper plate etc can be along print direction relative to substrate Support member moves.

Figure 10 is illustrated according to the further embodiment described herein, enterprising in substrate for solar battery product The schematic diagram of the equipment of row printing.

According to some embodiments, it can be combined with the other embodiment described herein, and conveyer includes turntable With movable substrate support member at least one.The equipment illustrated in Figure 10 example has turntable 1000.In some implementations In mode, substrate is arranged on substrate support, is such as arranged on movable substrate support member (" shuttle motivation structure "), may move Substrate support is attached to turntable 1000.In other embodiments, turntable 1000 has substrate support.As one Example, turntable 1000 can provide support surface, and substrate may be provided on the support surface.

The equipment with such as conveyer of turntable 1000 etc according to present disclosure can be tinuous production A part, and can be configured to manufacture solar cell.In some embodiments, the equipment can at least have printing Stand, solar cell turnover machine (solar cell flipper), center positioning device and testing station, the testing station utilize light Source or lamp simulated solar irradiation, to determine the electrical characteristics of manufactured solar cell.In some embodiments, because substrate 10 Substantially the same position is maintained at during the rotation of turntable 1000 and for example can be protected by vacuum or other holding technologies Positioning is held, therefore vision system of second typography before for the substrate 10 that aligns can be omitted in.

Figure 10 is illustrated according to the embodiment that describes herein, for solar battery product in carrying out screen printing on substrate The example apparatus of brush, it has turntable 1000 and printing station 910.According to some embodiments, the equipment includes input and filled 3100, alignment means 3300 and output device 3200 are put, input unit 3100 is configured to substrate 10 being transported to turntable 1000, alignment means 3300 are configured to the alignment that substrate 10 is transported to progress substrate 10 before turntable 1000, output Device 3200 is configured to receive the substrate 10 for being printed with the first line pattern and the second line pattern thereon from turntable 1000.

As illustrated, input unit 3100 can have pan feeding conveyer.Pan feeding conveyer can have one or more the One conveyer belt.For example, pan feeding conveyer may include two first conveyer belts 3150 of parallel arrangement, for example, its that At a distance of 5 centimetres to 15 centimetres of distance between this.Output device 3200 can be configured to be printed thereon with being received from turntable 1000 There is the substrate 10 of the first line pattern and the second line pattern.Output device 3200 can have discharging conveyer.Discharging conveyer can With one or more second conveyer belts.For example, discharging conveyer may include two the second conveyer belts of parallel arrangement 3250, for example, it is each other at a distance of 5 centimetres to 15 centimetres of distance.Input unit 3100 can with output device 3200 For automated substrate handling device, it is a part for larger production line.

According to some embodiments, equipment includes alignment means 3300, and it is configured to is transported to rotation by substrate 10 The alignment of substrate 10 is carried out before platform 1000.As an example, can be provided at input unit 3100 or alignment means 3300 Inspection system (not shown).The inspection system can be configured to determine the position of substrate 10, such as on conveyer belt 3150 Position.Alignment means 3300 can be configured with the position according to the substrate 10 that from inspection system received data, aligns.

The equipment includes printing station 910, and silk screen is provided with printing station 910.Printing station 910 can extend turntable On 1000.The printing of first line pattern and/or the second line pattern can be complete while substrate 10 is provided at printing position 2 Into.

Turntable 1000 can rotate around rotary shaft 1050.As an example, turntable 1000 can be configured at least to exist Rotated between substrate receiving position 1 and printing position 2 around rotary shaft 1050.According to most embodiments, turntable 1000 passes through Configure to be revolved between at least one of substrate receiving position 1, printing position 2 and substrate unloading position 3 and substrate discharge position 4 Turn.

Turntable 1000 is configured to along being rotated by the limited track in rotary moving of turntable and transmit substrate 10, Such as the track around rotary shaft 1050.Turntable 1000 can be rotated according to clockwise or inverse clock rotation mode, will to set Put in turntable 1000 or be attached to the substrate support (for example, movable substrate support member or shuttle motivation structure) of turntable 1000 On substrate 10 move.Turntable 1000 can be configured to accelerate to maximum rotative speed, and then be slowed down again It is mobile, with the platform 1000 that stops the rotation again.

In some embodiments, the anglec of rotation between adjacent position (such as substrate receiving position 1 and printing position 2) It may be about 90 °.As an example, 1000 rotatable 90 ° of turntable from substrate receiving position 1 by substrate 10 to be moved to printing Position 2.Likewise, 1000 rotatable 90 ° of turntable from printing position 2 by substrate 10 to be moved to substrate unloading position 3.

According to some embodiments, rotational time of the turntable 1000 between adjacent position can be at 400 milliseconds to 500 millis In the range of second, and it particularly may be about 450 milliseconds.As an example, turntable 1000 is in substrate receiving position 1 and print The rotational time brushed between position 2 can be in the range of 400 milliseconds to 500 milliseconds, and particularly may be about 450 milliseconds. Term " rotational time " means turntable 1000 from a position (such as the substrate receiving position 1) adjacent position of moving substrate 10 to one The time that (such as printing position 2) is spent.

According to some embodiments, it can be combined with the other embodiment described herein, and turntable 1000 includes driving Device or motor, the driver or motor are configured so that turntable 1000 rotates around rotary shaft 1050.As an example, institute It can be the direct driver for being configured to directly drive rotary shaft 1050 to state driver or motor.In other instances, the drive Dynamic device or motor may include the transmitting device of such as belt etc, by the rotary transfer provided by driver or motor to rotation Rotating shaft 1050.

According to some embodiments, it can be combined with the other embodiment described herein, in the rotation of turntable 1000 Period and/or between, the further processing of one or more of solar cell manufacture processing can be carried out.In some embodiment party In formula, can be rotated since printing station 910 by being printed with the substrate 10 of the first line pattern thereon by about 360 degree.In other words, base The mode that plate 10 rotates by turntable 1000 around rotary shaft 1050, moved away from out printing station 910 and be then moved back into To printing station 910.During the rotation of turntable 100, the first line pattern and/or the second line pattern can be dried.

In some embodiments, the equipment, which comprises at least, is selected from what is be made up of laser heater and electronic heater At least one heater of group.The heater, which can be included in, to be attached into the substrate support of turntable 1000, such as In movable substrate support member (" shuttle motivation structure ").In other embodiments, heater can be included in turntable 1000, For example, when substrate is arranged on the support surface provided by turntable 1000.

According to some embodiments, it can be combined with the other embodiment described herein, and following many aspects can be in Single treatment is carried out in station.Load substrate (battery).Carry out the first typography (for example, only fingers).In turntable 1000 rotation during, can use conduction heating, Convective Heating, radiant heating and its be combined it is at least one by way of, Carry out the drying of the first line pattern.As an example, the drying of the first line pattern can include laser and heat and be integrated into substrate At least one of heater in support member (reticulate body).After drying treatment, substrate returns to printing station to carry out the second print Dataller's skill.Carry out the second typography (for example, only fingers).Substrate by the second time heating and be unloaded.Substrate It is moved to the second printing station and busbar deposition is carried out with (only).

Present disclosure provide it is a kind of for solar battery product and on substrate carry out silk-screen printing method, its Dual typography is carried out using single silk screen.Particularly, after First Line pattern printing, substrate and silk screen are relative to each other It is mobile, for example, to carry out the drying of the first line pattern.Substrate is positioned relative to each other with silk screen, and the second line pattern is then sharp It is superimposed upon with the identical silk screen in First Line pattern printing on the first line pattern.

Avoided using identical silk screen and be related to mismatch shortcoming caused by screen warpage and/or silk screen manufacturing tolerance. Second line pattern can be accurate relative to the positioning of the first line pattern, and this is particularly advantageous for slim fingers.It is manufactured too The quality of positive energy battery can be improved.Further, in some embodiments, it is convenient to omit print it in the second line pattern Before, the step of substrate is alignd relative to each other with silk screen.It need not provide for the second dual vision system printed, and energy Simplify and obtain system architecture for the manufacturing equipment of solar cell.In addition, using according to the embodiment described herein Method and apparatus, the amount of printing paste can be reduced.

Although foregoing teachings are the embodiment narrations for present disclosure, without departing substantially from the basic of present disclosure In the case of scope, other and further embodiment of present disclosure can be designed, and present disclosure scope by Claims below is determined.

Claims

1. a kind of method that silk-screen printing is carried out on substrate for solar battery product, methods described include following step Suddenly：

Using silk screen in the first typography on the substrate carry out First Line pattern printing；

The substrate and the silk screen are moved away from each other, and the substrate and the silk screen are moved back to toward each other；With

Carry out the printing of the second line pattern on first line pattern in the second typography using the silk screen.

At least one of 2. the method as described in claim 1, further comprise the steps：

After the printing of first line pattern, the drying of first line pattern is carried out；With

After the printing of second line pattern, the drying of second line pattern is carried out,

The drying of wherein described First Line pattern is moved away from each other and by the substrate by the substrate and the silk screen With the silk screen be moved back to toward each other during and/or between carry out.

3. method as claimed in claim 1 or 2, wherein the substrate and the silk screen are moved away from each other, and by described in The step of substrate is moved back to toward each other with the silk screen comprises the following steps：

The substrate is moved away from into the silk screen, and the substrate is moved back to towards the silk screen.

4. method as claimed in claim 3, wherein the substrate moved away from into the silk screen, and by the substrate towards described Silk screen be moved back to including：At least one of the rotation of turntable and the movement of movable substrate support member.

5. the method as described in one of claim 1 to claim 4, wherein by the substrate with being that silk screen moves away from that This, and the substrate and the silk screen are moved back to the movement for including the silk screen toward each other.

6. the method as any one of claim 1 to claim 5, wherein first typography and described second Typography is carried out in identical printing station.

7. the method as any one of claim 1 to claim 6, wherein the First Line pattern and second line At least one of pattern includes two or more circuit sub-patterns, wherein described two or more circuit sub-patterns be selected from by The group formed below：The fingers of the solar cell, the busbar of the solar cell, the finger of the solar cell Shape portion redundant circuit and its any combination.

8. method as claimed in claim 7, wherein first typography includes the printing of first line pattern, it is described First line pattern has the fingers, busbar and one or more redundant circuits of the solar cell, and wherein at least One or more redundant circuit does not print in second typography.

9. method as claimed in claim 7 or 8, wherein first typography includes the printing of first line pattern, First line pattern has the fingers of the solar cell and the Part I of the busbar, wherein second print Dataller's skill includes the printing of second line pattern, and second line pattern has the second of the fingers and the busbar Part, and the Part II of the Part I of wherein described busbar and the busbar is adjacent to each other on the substrate.

10. the method as any one of claim 1 to claim 9, wherein described in first typography Substrate is relative to the first relative direction of the silk screen with the substrate described in second typography relative to the silk screen The second relative direction be different.

11. method as claimed in claim 10, wherein first relative direction is inclined each other with second relative direction Move.

12. method as claimed in claim 11, wherein the skew is parallel to one of first line pattern or more In the direction that the first of multiple first line extends along its length.

A kind of 13. silk screen used in the method any one of claim 1 to claim 12, wherein the silk screen The first configured silk-screen patterns are printed with the fingers for the solar cell and are directed to the solar-electricity The busbar in pond and/or one or more redundant circuits are printed at least one of the second configured silk-screen patterns.

14. a kind of equipment that silk-screen printing is carried out on substrate for solar battery product, the equipment include：

Silk screen, the silk screen are configured for use in the printing that the first line pattern and the second line pattern are carried out on the substrate； With

Conveyer, the conveyer are configured for use in the institute that will have first line pattern of printing thereon State substrate to move away from each other with the silk screen, and the substrate and the silk screen are moved back to toward each other, with described first The printing of second line pattern is carried out on line pattern.

15. equipment as claimed in claim 14, wherein the conveyer includes turntable and movable substrate support member At least one.