CN103171256B - Electrode of solar battery printing mask board and manufacture method thereof - Google Patents
Electrode of solar battery printing mask board and manufacture method thereof Download PDFInfo
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- CN103171256B CN103171256B CN201110436110.9A CN201110436110A CN103171256B CN 103171256 B CN103171256 B CN 103171256B CN 201110436110 A CN201110436110 A CN 201110436110A CN 103171256 B CN103171256 B CN 103171256B
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Abstract
The present invention relates to a kind of electrode of solar battery printing mask board and manufacture method thereof, described mask comprises sandwich construction, is at least made up of ground floor and second layer electroformed layer, described electroformed layer is provided with main gate line and thin grid line.The invention solves the problem that silk screen intertexture overlap is worked out, individual layer solar energy prints out grid line calabash shaped phenomenon, improve printing quality; The thin grid line depth-width ratio of effective raising, promotes solar conversion efficiency, has wide market prospects.
Description
Technical field
A kind of electrode of solar battery printing mask board that the present invention relates to and manufacture method thereof, belong to solar cell print field.
Background technology
Serigraphy is stretched tight on screen frame by silk fabrics, synthetic fabrics or woven wire, adopts manual method of carving paint film or photochemistry plate-making to make screen printing forme.Modern screen printing technology is then utilize photosensitive material to make screen printing forme (make the silk screen hole of areas on screen printing forme be through hole, but not the silk screen hole of areas being plugged) by photomechanical method.By the extruding of scraper plate during printing, make ink transfer on stock by the mesh of areas, form the picture and text the same with original copy.Screen printing apparatus is simple, easy to operate, print, make a plate simple and easy and with low cost, strong adaptability.
Serigraphy originates from China the earliest, apart from the history of modern existing more than 2,000 year.Just there is folder a word used in person's names printing method in the Qin Han dynasty as far back as Ancient Times in China.Generally popular to the Eastern Han Dynasty folder a word used in person's names batik method, and the level of printed product is also improved.To between great cause year Sui Dynasty, people start to carry out stamp with the frame of the tulle that stretches tight, and make folder a word used in person's names printing technology develop into screen printing.Record according to history records, the exquisite dress ornament worn in imperial palace during the Tang Dynasty just has to be printed in this way.There is again development to Song dynasty serigraphy, and improved the original oil paint used, started the rubber powder adding starch based in dyestuff, become slurry and carry out serigraphy, make the color of screen printing products more gorgeous.
Screen printing is that one of China invents greatly.The U.S.'s " serigraphy " magazine had such commentary to Chinese screen printing technique: " prove that Chinese just used horse-hair and template before bimillennium on evidence.The uniforms card at Ming Dynasty's initial stage understands their competitive spirit and process technology." invention of screen printing, facilitate the development of world human material civilization.Today after bimillennium, screen printing technique development is perfect, has now become an indispensable part in human lives.
Serigraphy not only adapts to general paper printing, and adaptability widely.Such as: pottery, glass, printed substrate etc.Different according to the quality of stock, be just not quite similar during printing, although there is inseparable inner link between each series, because of stock quality difference (namely chemical property is different with physical property), have again its respective particularity separately.So people by stock different demarcation are usually: several large classes such as paper printing, Plastic printing, ceramic-like printing, category of glass printing, wiring board printing, metal species printing, textile printings.Material is thus formed respective relatively independent print system.
One of process for manufacturing circuit board, on the screen cloth of existing negative pattern, scrape with scraper and extrude appropriate ink (i.e. resist), positive pattern is formed through local screen cloth, print on the smooth copper face of substrate, form a kind of resist of covering, for the etching of subsequent selective or electroplating processes are prepared in advance.The mode of this transfer is commonly referred to as " screen painting " also known as " serigraphy ".
Under the background of global warming, " low-carbon economy " based on low energy consumption, low stain becomes global focus.Energy-saving and emission-reduction are imperative, and low carbon development has become the inexorable trend of social development gradually, and a kind of attitude, a kind of obligation are not only in low-carbon (LC) life, a kind of responsibility especially.The utilization of solar energy occupies consequence in the process pursuing low-carbon (LC), and solar cell is exactly a core representative of Solar use.
But traditional electrode of solar battery printing adopts common silk screen plate to print, the wire diameter of its thin grid line printing, generally at more than 70um, this severely limits the raising of solar cell conversion ratio.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electrode of solar battery printing mask board, this mask can print out the thin grid line that wire diameter is little, depth-width ratio is large, reduce the resistance of grid line, increase silicon plate light-receiving area, improve the electricity conversion of solar cell.
In order to solve the problems of the technologies described above, the technical scheme that the present invention takes is as follows:
A kind of electrode of solar battery printing mask board, is characterized in that, comprise sandwich construction, be at least made up of ground floor and second layer electroformed layer, described electroformed layer is provided with main gate line and thin grid line.
The main gate line of ground floor electroformed layer is connected by bridging with thin grid line.
The main gate line bridging connection network of ground floor electroformed layer is provided with conductive silver paste cannot through array point.
The graphics shape of described array point is circle, rhombus, rectangle, square, triangle or polygon.
The main gate line of second layer electroformed layer is connected without bridging with thin grid line.
Mask also comprises third layer electroformed layer, and the main gate line of third layer electroformed layer is connected without bridging with thin grid line.
Mask also comprises the 4th layer of electroformed layer, and the main gate line of the 4th layer of electroformed layer is connected without bridging with thin grid line.
The width of described thin grid line is less than 70 microns.
Described mask is by being stainless steel mask, nickel metallic mask, nickel based metal mask or other metallic mask
Be provided with in described mask edge arrange according to certain rules lateral opening.
Described mask is directly fixed on screen frame.
Described mask is by being fixed on screen frame after screen tension.
A preparation method for electrode of solar battery printing mask board, is characterized in that, comprises the following steps:
The first step: core film pre-treatment;
Second step: ground floor electroformed layer is shaping;
3rd step: second layer electroformed layer is shaping;
4th step: the above electroformed layer of the second layer is shaping;
5th step: move back film;
6th step: fixing.
Described first step technique: in core is carried out pre-treatment, make core film clean surface smooth; Described second step technique: even spread one deck light-sensitive surface on the core in one piece of light face, by exposure machine by above the electrode mask version ground floor Graphic transitions to photosensitive dry film of solar cell, the series of processes such as development cleaning, drying are carried out after exposure, dry film cleaning in unexposed place is dissolved, leave the electrode mask domain shape of solar cell, the core making figure is put in electroforming solution that to carry out electro-deposition shaping, when reaching expection thickness, from electroforming solution, takes out the core having one deck electroformed layer; Described three step process: take out and have the core of electroformed layer through operations such as pre-treatment sandblasting, cleanings, one deck light-sensitive surface is coated with there being the core cast layer surface uniform of electroformed layer, again with exposure machine by the Graphic transitions of the electrode mask version second layer of solar cell above photosensitive dry film, repeat electroforming process, when electroformed layer reaches expection thickness, take out core film; Described 4th step process: as carried out two-layer above electroformed layer, repeats the 3rd step, and wherein each exposure figure does certain change with the needs of electroformed layer, and the thickness of every layer of electroformed layer also adjusts according to related process parameters; Described 5th step process: utilize ultrasonic washing and other related process to carry out taking off film process, and will the complete multilayer electroforming mask of film be moved back from core film sur-face peeling; Described 6th step process: the mask stripped down directly is fixed on screen frame by methods such as welding or glue, also can be by being fixed on screen frame by methods such as welding or glue after screen tension, described screen frame is metal frame or nonmetal frame, described metal frame is aluminium frame or rust steel framework, and described silk screen is woven wire or polyester net.
Electrode of solar battery printing mask board provided by the invention, can overcome conventional solar cell screen printing mask version electrode precision poor, and depth-width ratio is difficult to improve, and thin grid line is difficult to make the limitation on fine rule road owing to working out the cause of silk screen; And can solve individual layer solar energy printing mask board print out thin grid line silver slurry lageniform bad phenomenon.The electrode of solar battery printing mask board that the present invention makes can print out the thin grid line of small size electrode, and the thin grid line silver slurry width printed out can control within 70um, and the more smooth homogeneity of surface ratio of thin grid line is good, and grid line depth-width ratio is large.These changes effectively decrease the light-receiving area caused because silicon chip surface grid line is wide and lose and reduce the resistance of grid line, increasing silicon plate light-receiving area, reducing the loss caused when collecting electric current, and then improve the electricity conversion of battery.The invention solves the problem that silk screen intertexture overlap is worked out, individual layer solar energy prints out grid line calabash shaped phenomenon, improve printing quality; The thin grid line depth-width ratio of effective raising, promotes solar conversion efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is ground floor electroformed layer schematic diagram;
Fig. 2 is second layer electroformed layer schematic diagram;
Fig. 3 is the mask being provided with array point;
Fig. 4 is provided with lateral opening mask;
Fig. 5 is the mask be directly fixed on screen frame;
Fig. 6 stretches tight after net to be fixed on mask on screen frame;
Fig. 7 is mask fabrication processing figure.
In figure, the enlarged diagram, 4 of 1 to be the enlarged diagram, 3 be second layer electroformed layer main gate line and thin grid line for the enlarged diagram, 2 of ground floor electroformed layer main gate line and thin grid line be main gate line and thin grid line is array point, 5 is lateral opening.
Detailed description of the invention
Embodiment 1:
Be the flow chart of one embodiment of the present of invention shown in Fig. 7, involved mask is double-layer structure, and concrete scheme is as follows:
A, stainless steel core is carried out pre-treatment, make core film clean surface smooth.
B, on stainless steel core even spread one deck light-sensitive surface; By exposure machine by above the electrode mask version ground floor Graphic transitions to photosensitive dry film of solar cell; The series of processes such as development cleaning, drying are carried out after exposure, dry film cleaning in unexposed place is dissolved, leave the electrode mask domain shape of solar cell, the thin grid line of electrode of solar battery mask ground floor and main gate line be all by grid line between bridging be connected, mask graph is corresponding thereto; The core making figure is put in electroforming solution that to carry out electro-deposition shaping, when reaching expection thickness, from electroforming solution, takes out the core having one deck electroformed layer.Figure 1 shows that electroforming electrode of solar battery mask ground floor floor map, 1 is the enlarged diagram of ground floor electroformed layer main gate line and thin grid line.
C, taking-up have the core of electroformed layer through operations such as pre-treatment sandblasting, cleanings; One deck light-sensitive surface is coated with there being the core cast layer surface uniform of electroformed layer; Again with exposure machine by the Graphic transitions of the electrode mask version second layer of solar cell above photosensitive dry film, connect without bridging between the thin grid line of the electrode of solar battery mask second layer and main gate line, it is complete hollow out, mask graph corresponding thereto, repeat electroforming process, when electroformed layer reaches expection thickness, take out core film.Figure 2 shows that electroforming electrode of solar battery mask second layer floor map, 2 is the enlarged diagram of second layer electroformed layer main gate line and thin grid line.
D, utilize ultrasonic washing and other related process to carry out taking off film process, and will the complete multilayer electroforming mask of film be moved back from core film sur-face peeling.
E, the mask made directly are fixed on screen frame by welding manner; Described screen frame is solid metal aluminium frame.Figure 5 shows that the electrode of solar battery mask be directly welded on screen frame.(mask made also can be tightened the gluing method of rear glue by polyester webs and be fixed on hollow stainless steel screen frame.The electrode of solar battery mask on screen frame is fixed on) after Figure 6 shows that the net that stretches tight
Embodiment 2:
The main gate line of mask is provided with conductive silver paste cannot through array point, the graphics shape of array point can be any shape, as circle, rhombus, rectangle, square, triangle, polygon etc., is preferably circular; When the shape of described array point is circular, circular diameter is 50um ~ 1mm, and when the shape of described array point is rectangle, the circular length of side is 50um ~ 1mm, and when the shape of described array point is triangle, the leg-of-mutton length of side is 50um ~ 1mm; Described array dot center spacing is 50um ~ 1mm; It is parallel with main gate line, vertical or at an angle that described array point is expert at (or row).Fig. 3 is the mask being provided with array point; 3 is the enlarged diagram of main gate line and thin grid line, and the graphics shape of array point 4 is circular, and diameter is 50um, and the center of circle spacing of any two adjacent circles is 125um; Described array point 4 be expert at, column parallel with main gate line and main gate line main body be 60 ° of angles.
Embodiment 3:
Figure 4 shows that and be a kind ofly provided with lateral opening mask schematic diagram.This mask edge is provided with arrange according to certain rules lateral opening; The lateral opening of mask can be any shape, is preferably circular; Being parallel to limit near described mask every bar limit has two rows lateral opening, and often row's equidistantly dispersion; Described lateral opening be fixed on frame for being fixed on frame or by silk screen by mask glue.
Above embodiment object is the present invention is described, but not limits the scope of the invention, and all application come by simple change of the present invention all drop in protection scope of the present invention.
Claims (11)
1. an electrode of solar battery printing mask board, it is characterized in that, comprise sandwich construction, at least be made up of ground floor electroformed layer and second layer electroformed layer, ground floor electroformed layer and second layer electroformed layer are provided with main gate line and thin grid line, the main gate line of described ground floor electroformed layer is connected by bridging with thin grid line, and the main gate line of described second layer electroformed layer is connected without bridging with thin grid line.
2. electrode of solar battery printing mask board according to claim 1, is characterized in that, the main gate line bridging connection network of ground floor electroformed layer is provided with conductive silver paste cannot through array point.
3. electrode of solar battery printing mask board according to claim 2, is characterized in that, the graphics shape of described array point is circle, rhombus, rectangle or triangle.
4. according to the electrode of solar battery printing mask board described in claim 1, it is characterized in that, also comprise third layer electroformed layer, the main gate line of third layer electroformed layer is connected without bridging with thin grid line.
5. according to the electrode of solar battery printing mask board described in claim 4, it is characterized in that, also comprise the 4th layer of electroformed layer, the main gate line of the 4th layer of electroformed layer is connected without bridging with thin grid line.
6. the electrode of solar battery printing mask board according to any one of claim 1-5, is characterized in that, the width of described thin grid line is less than 70 microns.
7. the electrode of solar battery printing mask board according to any one of claim 1-5, is characterized in that, described mask is nickel metallic mask, nickel based metal mask or other metallic mask.
8. the electrode of solar battery printing mask board according to any one of claim 1-5, is characterized in that, is provided with in described mask edge arrange according to certain rules lateral opening.
9. the electrode of solar battery printing mask board according to any one of claim 1-5, is characterized in that, described mask is directly fixed on screen frame.
10. the electrode of solar battery printing mask board according to any one of claim 1-5, is characterized in that, described mask is by being fixed on screen frame after screen tension.
The preparation method of 11. 1 kinds of electrode of solar battery printing mask boards, is characterized in that, comprises the following steps:
The first step: core film pre-treatment;
Second step: ground floor electroformed layer is shaping;
3rd step: second layer electroformed layer is shaping;
4th step: the above electroformed layer of the second layer is shaping;
5th step: take off film;
6th step: fixing;
Described first step technique: core is carried out pre-treatment, makes core film clean surface smooth; Described second step technique: even spread one deck photosensitive dry film on the core in one piece of light face, by exposure machine by above the electrode mask version ground floor Graphic transitions to photosensitive dry film of solar cell, development cleaning, drying is carried out after exposure, dry film cleaning in unexposed place is dissolved, leave the electrode mask domain shape of solar cell, the core making figure is put in electroforming solution that to carry out electro-deposition shaping, when reaching expection thickness, from electroforming solution, takes out the core having one deck electroformed layer; Described three step process: take out and have the core of electroformed layer through pre-treatment sandblasting, matting, one deck photosensitive dry film is coated with there being the core cast layer surface uniform of electroformed layer, again with exposure machine by the Graphic transitions of the electrode mask version second layer of solar cell above photosensitive dry film, repeat electroforming process, when electroformed layer reaches expection thickness, take out core film; Described 4th step process: repeat the 3rd step, wherein each exposure figure does certain change with the needs of electroformed layer, and the thickness of every layer of electroformed layer also adjusts according to related process parameters; Described 5th step process: utilize ultrasonic washing and other related process to carry out taking off film process, and will the complete multilayer electroforming mask of film be taken off from core film sur-face peeling; Described 6th step process: the mask stripped down directly is fixed on screen frame by welding or glue, or by being fixed on screen frame with welding or glue after screen tension, described screen frame is metal frame or nonmetal frame, described metal frame is aluminium frame or stainless steel framework, and described silk screen is woven wire or polyester net; The main gate line of described ground floor electroformed layer is connected by bridging with thin grid line, and the main gate line of described second layer electroformed layer and the above electroformed layer of the second layer is connected without bridging with thin grid line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436110.9A CN103171256B (en) | 2011-12-23 | 2011-12-23 | Electrode of solar battery printing mask board and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110436110.9A CN103171256B (en) | 2011-12-23 | 2011-12-23 | Electrode of solar battery printing mask board and manufacture method thereof |
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| CN103171256A CN103171256A (en) | 2013-06-26 |
| CN103171256B true CN103171256B (en) | 2015-09-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103770452A (en) * | 2014-01-26 | 2014-05-07 | 昆山允升吉光电科技有限公司 | Metal wire mesh |
| CN104029469A (en) * | 2014-06-04 | 2014-09-10 | 浙江尖山光电股份有限公司 | Screen printing plate for solar battery and method of manufacturing solar battery |
| CN104275915B (en) * | 2014-10-31 | 2017-04-05 | 英利集团有限公司 | A kind of manufacture method and solaode half tone of solaode half tone |
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| CN101855599A (en) * | 2007-09-20 | 2010-10-06 | 弗赖斯金属有限公司 | Be used on the front of solar cell, forming the electroforming masterplate of spray metal coating |
| CN202528559U (en) * | 2011-12-23 | 2012-11-14 | 昆山允升吉光电科技有限公司 | Electrode printing mask of solar cell |
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| CN1804138A (en) * | 2005-11-14 | 2006-07-19 | 深圳市允升吉电子有限公司 | Mask electro-forming method for vaporization coating of organic light-emitting display |
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| CN101855599A (en) * | 2007-09-20 | 2010-10-06 | 弗赖斯金属有限公司 | Be used on the front of solar cell, forming the electroforming masterplate of spray metal coating |
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