TWI650249B - Screen printing method - Google Patents
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- TWI650249B TWI650249B TW106134592A TW106134592A TWI650249B TW I650249 B TWI650249 B TW I650249B TW 106134592 A TW106134592 A TW 106134592A TW 106134592 A TW106134592 A TW 106134592A TW I650249 B TWI650249 B TW I650249B
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Abstract
一種網印用之擠刀與網印之方法。此擠刀包含擠刀座以及刮印部。刮印部固定於擠刀座，刮印部包含長條狀之刮面。刮面於網印時對漿料施力。刮面之長度延伸方向和擠刀座於網印時之既定移動方向不垂直。 A method for squeezing and screen printing for screen printing. The squeegee includes a squeegee seat and a squeegee. The squeegee portion is fixed to the squeegee seat, and the squeegee portion includes a strip-shaped scraping surface. The scraping surface applies force to the slurry during screen printing. The length of the scraping surface extends in a direction that is not perpendicular to the predetermined moving direction of the squeegee during screen printing.
Description
本發明是有關於一種印刷技術，且特別是有關於一種網印用之擠刀與網印之方法。 This invention relates to a printing technique, and more particularly to a method of squeezing and screen printing for screen printing.
傳統太陽能電池的電極常以絲網網印製程形成，該網印製程所用網版之網布層的鋼絲與阻擋層之落墨孔有一夾角，此夾角一般是介於22.5度至30度。由於鋼絲的網結會阻礙落墨孔的出墨，因此為了避免指狀電極(finger)之落墨孔內有鋼絲的網結，而將網布層之網絲的開口與指狀電極之落墨孔之間的夾角更改為0度(或90度)，並使網絲的網結避開指狀電極之落墨孔。這樣的網版一般稱為無網結網版。藉由這樣的設計，可提升指狀電極之印刷的出墨順暢性及細線印刷性。 The electrodes of the conventional solar cell are often formed by a screen printing process. The wire of the mesh layer of the screen used in the screen printing process has an angle with the ink drop hole of the barrier layer, and the angle is generally between 22.5 degrees and 30 degrees. Since the mesh of the steel wire can hinder the ink discharge of the ink drop hole, in order to avoid the wire knot of the wire in the ink drop hole of the finger electrode, the opening of the mesh of the mesh layer and the ink drop hole of the finger electrode are The angle between the angles is changed to 0 degrees (or 90 degrees), and the mesh of the mesh is avoided from the ink holes of the finger electrodes. Such a screen is generally referred to as a no-net version. With such a design, the ink discharge smoothness and fine line printability of the printing of the finger electrodes can be improved.
然而，利用此設計進行印刷時，由於鋼絲與擠刀行進方向垂直，因此當擠刀推動漿料來將其填入網版的落墨孔時，鋼絲會阻擋漿料流動，導致漿料無法有效填入鋼絲另一側的落墨孔。如此一來，印刷後，匯流電極(bus bar)在沿著鋼絲的方向上有整排填墨不良的空隙，使得匯流電極的外觀產生缺陷，進而導致生產良率下降。 However, when printing with this design, since the steel wire is perpendicular to the direction of travel of the squeegee, when the squeegee pushes the slurry to fill the ink drop hole of the screen, the steel wire blocks the flow of the slurry, resulting in the slurry being unable to be effectively filled. Into the ink drop hole on the other side of the wire. As a result, after printing, the bus bar has a complete row of poorly filled voids in the direction along the wire, causing defects in the appearance of the bus electrode, which in turn leads to a decrease in production yield.
因此，本發明之一目的就是在提供一種網印用之擠刀與網印之方法，其中擠刀之刮印部之刮面的長度延伸方向與其擠刀座的既定移動方向不垂直，如此在網版之網絲垂直擠刀座之既定移動方向時，刮印部對漿料的推動力有與擠刀座移動方向之間具一夾角的分力，而可改變漿料填入落墨孔的流動方向，使漿料可更順暢的填入落墨孔中。故，可避免匯流電極印刷時產生整排填墨不良的缺陷，進而可大幅提升無網結網版等印刷製程的良率。 Therefore, an object of the present invention is to provide a method for screen printing and screen printing for screen printing, wherein the length of the scraping surface of the squeegee portion of the squeegee extends in a direction that is not perpendicular to a predetermined moving direction of the squeegee holder, thus When the screen of the screen is perpendicular to the predetermined moving direction of the knife seat, the driving force of the scraping portion on the slurry has an angle component with the moving direction of the knife seat, and the slurry can be changed to fill the ink hole. The flow direction allows the slurry to be filled more smoothly into the ink holes. Therefore, it is possible to avoid the defect that the entire row of ink is poor when the bus electrode is printed, and the yield of the printing process such as the netless screen can be greatly improved.
根據本發明之上述目的，提出一種網印用之擠刀。此擠刀包含擠刀座以及刮印部。刮印部固定於擠刀座，刮印部包含長條狀之刮面，此刮面於網印時對漿料施力，其中刮面之長度延伸方向和擠刀座於網印時之既定移動方向不垂直。 According to the above object of the present invention, a squeegee for screen printing is proposed. The squeegee includes a squeegee seat and a squeegee. The squeegee portion is fixed to the squeegee seat, and the squeegee portion comprises a long strip-shaped scraping surface, and the scraping surface applies force to the slurry during screen printing, wherein the length of the scraping surface extends and the squeegee seat is determined at the time of screen printing The direction of movement is not vertical.
依據本發明之一實施例，上述之刮印部為厚度均勻之長形膠條，刮印部固定於擠刀座之第一表面，第一表面和擠刀座於網印時之既定移動方向不垂直。 According to an embodiment of the invention, the squeegee portion is a long strip of uniform thickness, the squeegee portion is fixed to the first surface of the squeegee seat, and the first surface and the squeegee seat are in a predetermined moving direction when screen printing not vertical.
依據本發明之一實施例，上述之刮印部之厚度沿著刮面之長度延伸方向變化，使刮面之長度延伸方向和擠刀座於網印時之既定移動方向不垂直。 According to an embodiment of the invention, the thickness of the squeegee portion varies along the length of the squeegee, so that the length of the squeegee extends in a direction that is not perpendicular to the predetermined direction of movement of the squeegee during screen printing.
依據本發明之一實施例，上述之刮面之長度延伸方向和擠刀座之延伸方向之夾角約為2度至5度。 According to an embodiment of the present invention, the angle between the extending direction of the scraping surface and the extending direction of the cutter seat is about 2 to 5 degrees.
根據本發明之上述目的，另提出一種網印之方法。在此方法中，使用擠刀及網版進行網印製程。網版包含網布層以及阻擋層。網布層包含沿第一方向延伸的複數條第 一網絲、以及沿第二方向延伸的複數條第二網絲，第一方向垂直於第二方向。阻擋層附著於網布層。阻擋層包含沿第一方向延伸的第一落墨孔、以及沿第二方向延伸之複數條第二落墨孔，第一落墨孔之寬度大於每條第二落墨孔之寬度。於進行網印製程時，擠刀沿第二方向移動，擠刀之刮面之長度延伸方向和第一方向不平行。 According to the above object of the present invention, a method of screen printing is further proposed. In this method, a screen and a screen are used for the screen printing process. The screen includes a mesh layer and a barrier layer. The mesh layer includes a plurality of strips extending in the first direction a wire mesh and a plurality of second mesh wires extending in the second direction, the first direction being perpendicular to the second direction. The barrier layer is attached to the mesh layer. The barrier layer includes a first ink drop hole extending in the first direction and a plurality of second ink drop holes extending in the second direction, the width of the first ink drop hole being greater than the width of each of the second ink drop holes. During the screen printing process, the squeegee moves in the second direction, and the length of the squeegee of the squeezing blade extends in a direction that is not parallel to the first direction.
依據本發明之一實施例，上述之第二落墨孔和第二網絲不相重疊。 According to an embodiment of the invention, the second ink drop hole and the second wire are not overlapped.
依據本發明之一實施例，上述之擠刀包含擠刀座、以及刮印部固定於擠刀座。刮印部包含上述之刮面。 According to an embodiment of the invention, the squeezing blade comprises a squeegee seat and the squeegee portion is fixed to the squeegee seat. The squeegee portion includes the above-mentioned scraping surface.
依據本發明之一實施例，上述之刮印部為厚度均勻之長形膠條，刮印部固定於擠刀座之第一表面，第一表面和第二方向不垂直。 According to an embodiment of the invention, the squeegee portion is a long strip of uniform thickness, and the squeegee portion is fixed to the first surface of the squeegee seat, and the first surface and the second direction are not perpendicular.
依據本發明之一實施例，上述之刮印部之厚度沿著刮面之長度延伸方向變化，使刮面之長度延伸方向和第二方向不垂直。 According to an embodiment of the invention, the thickness of the squeegee portion varies along a direction in which the length of the squeegee extends, such that the length extending direction of the squeegee is not perpendicular to the second direction.
依據本發明之一實施例，上述之刮面之長度延伸方向和第一方向之夾角約為2度至5度。 According to an embodiment of the invention, the angle between the extending direction of the scraping surface and the first direction is about 2 to 5 degrees.
100‧‧‧擠刀 100‧‧‧Squeezing knife
110‧‧‧擠刀座 110‧‧‧Squeezing knife seat
110e‧‧‧延伸方向 110e‧‧‧ extending direction
110t‧‧‧厚度 110t‧‧‧ thickness
112‧‧‧第一表面 112‧‧‧ first surface
114‧‧‧第二表面 114‧‧‧ second surface
120‧‧‧刮印部 120‧‧‧Scratch
120t‧‧‧厚度 120t‧‧‧ thickness
122‧‧‧刮面 122‧‧‧Shaved noodles
122e‧‧‧長度延伸方向 122e‧‧‧ Length extension
130‧‧‧既定移動方向 130‧‧‧Definite moving direction
200‧‧‧擠刀 200‧‧‧Squeezing knife
210‧‧‧擠刀座 210‧‧‧Squeeing knife seat
210e‧‧‧延伸方向 210e‧‧‧Extension direction
210t‧‧‧厚度 210t‧‧‧ thickness
212‧‧‧第一表面 212‧‧‧ first surface
220‧‧‧刮印部 220‧‧‧Scratch Department
220t‧‧‧厚度 220t‧‧‧thickness
222‧‧‧刮面 222‧‧‧ shaved noodles
222e‧‧‧長度延伸方向 222e‧‧‧ Length extension
224‧‧‧表面 224‧‧‧ surface
230‧‧‧既定移動方向 230‧‧‧Definite moving direction
300‧‧‧擠刀 300‧‧‧Squeezing knife
310‧‧‧擠刀座 310‧‧‧Squeezing knife seat
312‧‧‧支承部 312‧‧‧Support
312a‧‧‧表面 312a‧‧‧ surface
312e‧‧‧延伸方向 312e‧‧‧Extension direction
314‧‧‧結合部 314‧‧‧Combination Department
314a‧‧‧第一表面 314a‧‧‧ first surface
314t‧‧‧上表面 314t‧‧‧ upper surface
320‧‧‧刮印部 320‧‧‧Scratch
322‧‧‧刮面 322‧‧‧Shaved noodles
322e‧‧‧長度延伸方向 322e‧‧‧ Length extension
330‧‧‧既定移動方向 330‧‧‧Definite moving direction
400‧‧‧網版 400‧‧‧Web Edition
410‧‧‧網布層 410‧‧‧Mesh layer
412‧‧‧第一網絲 412‧‧‧First mesh
414‧‧‧第二網絲 414‧‧‧Second mesh
420‧‧‧阻擋層 420‧‧‧Block
430‧‧‧第一方向 430‧‧‧First direction
432‧‧‧第二方向 432‧‧‧second direction
440‧‧‧第一落墨孔 440‧‧‧The first ink hole
440w‧‧‧寬度 440w‧‧‧Width
450‧‧‧第二落墨孔 450‧‧‧Second ink hole
450w‧‧‧寬度 450w‧‧‧Width
為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：〔圖1〕係繪示依照本發明之一實施方式的一種網印用之擠刀的上視示意圖； 〔圖2〕係繪示依照本發明之一實施方式的一種網印用之擠刀的上視示意圖；〔圖3A〕係繪示依照本發明之一實施方式的一種網印用之擠刀的前視示意圖；〔圖3B〕係繪示〔圖3A〕所示之擠刀的上視示意圖；以及〔圖4〕係繪示依照本發明之一實施方式的一種進行網印方法的裝置示意圖。 The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; a top view of the squeezing knife; FIG. 2 is a top view of a squeegee for screen printing according to an embodiment of the present invention; FIG. 3A illustrates a squeegee for screen printing according to an embodiment of the present invention. FIG. 3B is a schematic top view showing the squeezing blade shown in FIG. 3A; and FIG. 4 is a schematic view showing a device for performing a screen printing method according to an embodiment of the present invention.
請參照圖1，其係繪示依照本發明之一實施方式的一種網印用之擠刀的上視示意圖。擠刀100係運用於絲網網印製程，特別是使用無網結網版設計的網印製程。在一些實施例中，擠刀100可包含擠刀座110以及刮印部120。擠刀座110配置以裝載刮印部120，因而擠刀座110可為硬質結構體。舉例而言，擠刀座110之材質可為硬質塑膠、或金屬，例如不鏽鋼。擠刀座110可與驅動裝置連接，藉此，驅動裝置可驅動擠刀座110來進行網印製程。每個擠刀座110均有其預設的網印移動方向。 Please refer to FIG. 1 , which is a top view of a squeegee for screen printing according to an embodiment of the present invention. The squeezing knife 100 is used in the screen printing process, especially the screen printing process using the meshless screen design. In some embodiments, the squeegee 100 can include a squeeze seat 110 and a squeegee 120. The squeegee seat 110 is configured to load the squeegee portion 120, and thus the squeegee seat 110 can be a rigid structure. For example, the material of the extrusion block 110 can be a hard plastic or a metal such as stainless steel. The extruder block 110 can be coupled to a drive unit whereby the drive unit can drive the cutter block 110 for screen printing. Each of the squeeze blocks 110 has its preset screen printing direction.
刮印部120固定於擠刀座110之第一表面112上，因此擠刀座110的移動可帶動刮印部120。刮印部120又可稱為擠刀條，一般為具有可撓性的結構。舉例而言，刮印部120之材料可為橡膠。由於刮印部120於網印時會接觸漿料與網版，經過一段時間的使用會磨耗，因此刮印部120為擠刀100中的耗材。 The squeegee portion 120 is fixed to the first surface 112 of the turret seat 110, so that the movement of the squeegee holder 110 can drive the squeegee portion 120. The squeegee portion 120, which may also be referred to as a squeegee blade, is generally of a flexible construction. For example, the material of the squeegee 120 may be rubber. Since the squeegee 120 contacts the stencil and the screen during screen printing, it will wear out after a period of use, so the squeegee 120 is a consumable in the squeegee 100.
如圖1所示，刮印部120包含刮面122，其為網印時擠刀100和網版的接觸面。在一些示範例子中，刮面122大致為長條狀，或者刮面122可為線狀。於網印時，刮印部120之刮面122在網版上對印刷之漿料施力，藉以推動漿料填入網版之落墨孔中。在本實施方式中，刮面122具有長度延伸方向122e，擠刀座110於網印時有其既定移動方向130，其中刮面122之長度延伸方向122e與擠刀座110之既定移動方向130不垂直。在一些例子中，刮面122之長度延伸方向122e與擠刀座110之延伸方向110e之夾角為約2度至約5度。 As shown in FIG. 1, the squeegee portion 120 includes a scraping surface 122 which is a contact surface of the squeegee 100 and the screen when screen printing. In some exemplary examples, the shaving surface 122 is generally elongated or the shaving surface 122 may be linear. At the time of screen printing, the scraping surface 122 of the squeegee portion 120 applies a force to the printed paste on the screen to push the slurry into the ink smear of the screen. In the present embodiment, the scraping surface 122 has a length extending direction 122e, and the squeegee seat 110 has a predetermined moving direction 130 when the screen printing is performed, wherein the length extending direction 122e of the scraping surface 122 and the predetermined moving direction 130 of the squeegee holder 110 are not vertical. In some examples, the angle between the length extension direction 122e of the scraping surface 122 and the direction of extension 110e of the blade holder 110 is from about 2 degrees to about 5 degrees.
在一些示範例子中，請再次參照圖1，刮印部120為具有均勻之厚度120t的長形膠條，且擠刀座110之厚度110t則隨著刮印部120之刮面122的長度延伸方向122e而變化。舉例而言，擠刀座110之厚度110t隨著刮面122的長度延伸方向122e漸增或漸減。擠刀座110具有與第一表面112相對的第二表面114，其中因擠刀座110之厚度110t的變化，第一表面112相對於第二表面114傾斜。在這些例子中，第二表面114與擠刀座110之既定移動方向130垂直，因此第一表面112與擠刀座110之既定移動方向130不垂直，藉此可使固定在第一表面112上之刮印部120之刮面122的長度延伸方向122e與擠刀座110之既定移動方向130不垂直。 In some exemplary examples, referring again to FIG. 1, the squeegee 120 is an elongated strip having a uniform thickness of 120t, and the thickness 110t of the squeegee 110 extends with the length of the squeegee 122 of the squeegee 120. The direction 122e changes. For example, the thickness 110t of the squeegee seat 110 gradually increases or decreases as the length extending direction 122e of the scraping surface 122. The squeegee seat 110 has a second surface 114 opposite the first surface 112, wherein the first surface 112 is inclined relative to the second surface 114 due to variations in the thickness 110t of the squeegee seat 110. In these examples, the second surface 114 is perpendicular to the predetermined direction of movement 130 of the squeegee seat 110, such that the first surface 112 is not perpendicular to the predetermined direction of movement 130 of the squeegee seat 110, thereby being secured to the first surface 112. The length extending direction 122e of the scraping surface 122 of the squeegee portion 120 is not perpendicular to the predetermined moving direction 130 of the squeegee holder 110.
由於刮印部120之刮面122的長度延伸方向122e與擠刀座110之既定移動方向130不垂直，因此在網版 之網絲垂直此既定移動方向130時，刮印部120可提供漿料與此既定移動方向130之間具有一夾角的分力，而可使漿料更順暢的填入網版的落墨孔中。 Since the length extending direction 122e of the scraping surface 122 of the squeegee portion 120 is not perpendicular to the predetermined moving direction 130 of the squeegee holder 110, the screen is When the wire is perpendicular to the predetermined moving direction 130, the squeegeing portion 120 can provide a component of the angle between the slurry and the predetermined moving direction 130, so that the slurry can be smoothly filled into the ink smear of the screen. .
在本發明中，可利用不同設計來使刮印部之刮面的長度延伸方向與擠刀座之既定移動方向不垂直。請參照圖2係繪示依照本發明之一實施方式的一種網印用之擠刀的上視示意圖。在本實施方式中，擠刀200同樣可包含擠刀座210以及刮印部220，其中刮印部220固定於擠刀座210之第一表面212上。擠刀座210於網印時有其既定移動方向230。刮印部220包含刮面222，刮面222具有長度延伸方向222e。刮面222之長度延伸方向222e與擠刀座210之既定移動方向230不垂直。在一些例子中，刮面222之長度延伸方向222e與擠刀座210之延伸方向210e之夾角為約2度至約5度。 In the present invention, different designs can be utilized to make the length of the scraping surface of the squeegee extending in a direction that is not perpendicular to the intended direction of movement of the squeegee. 2 is a schematic top view of a squeegee for screen printing according to an embodiment of the present invention. In the present embodiment, the squeegee 200 can also include a squeegee holder 210 and a squeegee portion 220, wherein the squeegee portion 220 is fixed to the first surface 212 of the squeegee holder 210. The squeegee holder 210 has its intended direction of movement 230 when screen printing. The squeegee portion 220 includes a scraping surface 222 having a length extending direction 222e. The length extending direction 222e of the scraping surface 222 is not perpendicular to the predetermined moving direction 230 of the squeegee holder 210. In some examples, the longitudinal extension direction 222e of the scraping surface 222 is at an angle of from about 2 degrees to about 5 degrees from the direction of extension 210e of the blade holder 210.
在本實施方式中，擠刀座210具有均勻之厚度210t，刮印部220之厚度220t則沿著其刮面222之長度延伸方向222e而變化。舉例而言，刮印部220之厚度220t沿著其刮面222之長度延伸方向222e漸增或漸減。刮印部220具有與刮面222相對的表面224，刮印部220之表面224固定在具有均勻厚度210t之擠刀座210的第一表面212上。因此，刮印部220之厚度220t的變化，使得刮面222相對於表面224傾斜。在此實施方式中，擠刀座210之第一表面212與擠刀座210之既定移動方向230垂直，因此刮印部220之表面224亦與擠刀座210之既定移動方向230垂直，因而相對 於表面224傾斜之刮面222的長度延伸方向222e與擠刀座210之既定移動方向230不垂直。 In the present embodiment, the trowel holder 210 has a uniform thickness 210t, and the thickness 220t of the squeegee portion 220 varies along the length extending direction 222e of the scraping surface 222. For example, the thickness 220t of the squeegee portion 220 is gradually increased or decreased along the length extending direction 222e of the scraping surface 222. The squeegee portion 220 has a surface 224 opposite the squeegee 222, and the surface 224 of the squeegee portion 220 is secured to the first surface 212 of the squeegee holder 210 having a uniform thickness 210t. Therefore, the thickness 220t of the squeegee portion 220 is varied such that the squeegee 222 is inclined relative to the surface 224. In this embodiment, the first surface 212 of the squeegee holder 210 is perpendicular to the predetermined moving direction 230 of the squeegee holder 210, so that the surface 224 of the squeegee portion 220 is also perpendicular to the predetermined moving direction 230 of the squeegee holder 210, thus The length extending direction 222e of the scraping surface 222 inclined at the surface 224 is not perpendicular to the predetermined moving direction 230 of the squeegee holder 210.
請參照圖3A與圖3B，其係分別繪示依照本發明之一實施方式的一種網印用之擠刀的前視示意圖與上視示意圖。在一些實施例中，擠刀300主要包含擠刀座310與刮印部320。擠刀座310於網印時有其既定移動方向330。擠刀座310包含支承部312與結合部314。支承部312固接在結合部314之上表面314t上。刮印部320則固定於結合部314之第一表面314a上。刮印部320包含刮面322，其中刮面322大致為長條狀且具有長度延伸方向322e。在一些示範例子中，刮面322之長度延伸方向322e大致平行於結合部314之第一表面314a。 Please refer to FIG. 3A and FIG. 3B , which are respectively a front view and a top view of a squeeze knife for screen printing according to an embodiment of the present invention. In some embodiments, the squeegee 300 primarily includes a squeegee block 310 and a squeegee 320. The squeegee holder 310 has its intended direction of movement 330 when screen printing. The squeezing seat 310 includes a support portion 312 and a joint portion 314. The support portion 312 is fixed to the upper surface 314t of the joint portion 314. The squeegee portion 320 is fixed to the first surface 314a of the joint portion 314. The squeegee portion 320 includes a scraping surface 322, wherein the scraping surface 322 is substantially elongated and has a length extending direction 322e. In some exemplary examples, the length extension direction 322e of the scraping surface 322 is substantially parallel to the first surface 314a of the joint portion 314.
如圖3B所示，在擠刀座310中，支承部312之表面312a與擠刀座310之既定移動方向330垂直。結合部314之第一表面314a與擠刀座310之既定移動方向330不垂直。因此，固定於結合部314之第一表面314a上之刮印部320的刮面322的長度延伸方向322e與擠刀座310之既定移動方向330不垂直。在一些例子中，支承部312之表面312a與結合部314之第一表面314a之夾角為約2度至約5度，因而刮面322之長度延伸方向322e與擠刀座310之支承部312之延伸方向312e的夾角也約為2度至5度。 As shown in FIG. 3B, in the squeezing seat 310, the surface 312a of the support portion 312 is perpendicular to the predetermined moving direction 330 of the squeegee holder 310. The first surface 314a of the joint portion 314 is not perpendicular to the predetermined direction of movement 330 of the knife seat 310. Therefore, the length extending direction 322e of the scraping surface 322 of the squeegee portion 320 fixed to the first surface 314a of the joint portion 314 is not perpendicular to the predetermined moving direction 330 of the squeegee holder 310. In some examples, the surface 312a of the support portion 312 and the first surface 314a of the joint portion 314 are at an angle of about 2 degrees to about 5 degrees, so that the length extending direction 322e of the scraping surface 322 and the support portion 312 of the blade holder 310 are The angle of the extension direction 312e is also about 2 to 5 degrees.
在本實施方式中，透過在組裝擠刀座310時，相對於支承部312偏轉結合部314一角度的方式，可偏轉刮印部320之刮面322，而使得刮面322之長度延伸方向322e 與擠刀座310之既定移動方向330不垂直。這樣的設計僅需在組裝擠刀座310時偏轉結合部314，而無需改造網印機台，也可直接採用現行具有均勻厚度的刮印部320。 In the present embodiment, when the cutter seat 310 is assembled, the scraping surface 322 of the squeegee portion 320 can be deflected with respect to the support portion 312 at an angle of the joint portion 314, so that the length of the scraping surface 322 extends in the direction 322e. It is not perpendicular to the predetermined moving direction 330 of the squeegee holder 310. Such a design only needs to deflect the joint portion 314 when assembling the knife seat 310 without modifying the screen printing machine, or directly using the current shading portion 320 having a uniform thickness.
請參照圖4，其係繪示依照本發明之一實施方式的一種進行網印方法的裝置示意圖。此實施方式係利用上述之擠刀100來說明網印方法的進行，當然擠刀200與300、或其他刮面之長度延伸方向與擠刀座之既定移動方向不垂直的擠刀亦可用來進行本發明之網印方法。 Please refer to FIG. 4 , which is a schematic diagram of an apparatus for performing a screen printing method according to an embodiment of the present invention. This embodiment utilizes the above-described squeegee 100 to illustrate the progress of the screen printing method. Of course, the squeegees 200 and 300, or other squeegees whose length extension direction is not perpendicular to the predetermined moving direction of the squeegee seat, can also be used. The screen printing method of the present invention.
在此網印方法中，提供擠刀100，並製備所需網版400，再利用擠刀100與網版400來進行網印製程。在一些實施例中，網印製程是用以製作太陽能電池之匯流電極與指狀電極。當然，擠刀100亦可應用在其他的網印製程，並不限於太陽能電池之電極的網印。擠刀100的裝置設計如前所述，於此不再贅述。 In this screen printing method, the squeegee 100 is provided, and the desired screen 400 is prepared, and the squeegee 100 and the screen 400 are used for the screen printing process. In some embodiments, the screen printing process is used to fabricate the bus electrodes and finger electrodes of the solar cell. Of course, the squeegee 100 can also be applied to other screen printing processes, and is not limited to screen printing of electrodes of solar cells. The device design of the squeegee 100 is as described above and will not be described herein.
網版400包含網布層410以及阻擋層420。如圖4所示，網布層410包含數條第一網絲412以及數條第二網絲414。第一網絲412沿第一方向430延伸，第二網絲414沿第二方向432延伸，因而交織成網布層410。在一些示範例子中，第一方向430垂直於第二方向432。 The screen 400 includes a mesh layer 410 and a barrier layer 420. As shown in FIG. 4, the mesh layer 410 includes a plurality of first mesh wires 412 and a plurality of second mesh wires 414. The first mesh 412 extends in a first direction 430 and the second mesh 414 extends in a second direction 432, thereby being interwoven into a mesh layer 410. In some exemplary examples, the first direction 430 is perpendicular to the second direction 432.
阻擋層420附著於網布層410上。在一些例子中，如圖4所示，阻擋層420包含一第一落墨孔440以及數條第二落墨孔450。第一落墨孔440可沿第一方向430延伸，每條第二落墨孔450可沿著第二方向432延伸，即第二落墨孔450可垂直於第一落墨孔440。第一落墨孔400之寬度 440w大於每條第二落墨孔450之寬度450w。在這些例子中，第一落墨孔440配置以製作匯流電極，第二落墨孔450配置以製作指狀電極。由於每個太陽能電池可包含多個匯流電極，因此網版400可對應設有多個第一落墨孔440。在一些例子中，第二落墨孔450與第二網絲414不重疊，使第二落墨孔450之中不會有網結出現，因此網版400又可稱為無網結網版。 The barrier layer 420 is attached to the mesh layer 410. In some examples, as shown in FIG. 4, the barrier layer 420 includes a first ink drop hole 440 and a plurality of second ink drop holes 450. The first ink drop holes 440 may extend along the first direction 430 , and each of the second ink drop holes 450 may extend along the second direction 432 , that is, the second ink drop holes 450 may be perpendicular to the first ink drop holes 440 . The width of the first ink drop hole 400 440w is greater than the width 450w of each second ink drop hole 450. In these examples, the first ink drop hole 440 is configured to make a bus electrode, and the second ink drop hole 450 is configured to make a finger electrode. Since each solar cell can include a plurality of bus electrodes, the screen 400 can be correspondingly provided with a plurality of first ink holes 440. In some examples, the second ink drop hole 450 does not overlap with the second wire 414, so that no netting occurs in the second ink drop hole 450, so the screen 400 can also be referred to as a netless screen.
網印製程係利用擠刀100刮動網版400上的漿料，使漿料經由網版400之第一落墨孔440與第二落墨孔450而落在一基板的表面，例如太陽能板的表面，藉以在此基板的表面上形成匯流電極與指狀電極之漿料圖案層。在進行網印製程時，擠刀100沿著既定移動方向130移動，其中擠刀100之既定移動方向130即為第二落墨孔450所延伸之第二方向432。由於擠刀100之刮印部120係設於擠刀座110之第一表面112上，第一表面112與擠刀100之既定移動方向130(即第二方向432)不垂直，因此刮印部120之刮面122的長度延伸方向122e與第二方向432不垂直，因而刮面122的長度延伸方向122e和第一方向430不平行。 The screen printing process uses the squeegee 100 to scrape the slurry on the screen 400, and causes the slurry to fall on the surface of the substrate, such as the surface of the solar panel, via the first ink-removing holes 440 and the second ink-removing holes 450 of the screen 400. Thereby, a paste pattern layer of the bus electrode and the finger electrode is formed on the surface of the substrate. When the screen printing process is performed, the squeegee 100 moves along a predetermined moving direction 130, wherein the predetermined moving direction 130 of the squeegee 100 is the second direction 432 in which the second ink blasting hole 450 extends. Since the squeegee portion 120 of the squeegee 100 is disposed on the first surface 112 of the squeegee base 110, the first surface 112 is not perpendicular to the predetermined moving direction 130 (ie, the second direction 432) of the squeegee 100, and thus the squeegee portion The length extending direction 122e of the scraping surface 122 of 120 is not perpendicular to the second direction 432, and thus the length extending direction 122e of the scraping surface 122 and the first direction 430 are not parallel.
透過使擠刀100之刮印部120之刮面122的長度延伸方向122e不平行於第一落墨孔440所延伸之第一方向430，即亦不平行第一網絲412之延伸方向，可使刮面122對漿料的推動力具有一分力，此分力與第二方向432之間具有一夾角，因此可改變漿料填入第一落墨孔440與第二落墨孔450的流動方向，藉此提升漿料填入第一落墨孔440與第 二落墨孔450的順暢性。故，可有效避免匯流電極印刷時產生整排填墨不良的缺陷，進而可提升無網結網版等印刷製程的良率。 By making the length extending direction 122e of the scraping surface 122 of the squeegee portion 120 of the squeegee 100 not parallel to the first direction 430 extending by the first ink blasting hole 440, that is, not extending parallel to the extending direction of the first mesh 412, The scraping surface 122 has a component force to the driving force of the slurry, and the component has an angle with the second direction 432, so that the flow direction of the slurry filling the first ink removing hole 440 and the second ink removing hole 450 can be changed. Thereby lifting the slurry into the first ink-removing hole 440 and the first The smoothness of the two ink holes 450. Therefore, it is possible to effectively avoid the defects of the entire row of ink filling defects when the bus electrode is printed, and thereby improve the yield of the printing process such as the netless screen.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何在此技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 While the present invention has been described above by way of example, it is not intended to be construed as a limitation of the scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
Claims (6)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW493544U (en) * | 2000-01-25 | 2002-07-01 | Shin Chin Iron Works Co Ltd | Collecting tank for printing ink of lithographic plate printing machine |
| CN1951691A (en) * | 2005-10-17 | 2007-04-25 | 三星电子株式会社 | Printing apparatus, controlling method thereof and manufacturing method of a flat panel display |
| TW201718275A (en) * | 2015-11-16 | 2017-06-01 | 茂迪股份有限公司 | Screen plate and method of manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW493544U (en) * | 2000-01-25 | 2002-07-01 | Shin Chin Iron Works Co Ltd | Collecting tank for printing ink of lithographic plate printing machine |
| CN1951691A (en) * | 2005-10-17 | 2007-04-25 | 三星电子株式会社 | Printing apparatus, controlling method thereof and manufacturing method of a flat panel display |
| TW201718275A (en) * | 2015-11-16 | 2017-06-01 | 茂迪股份有限公司 | Screen plate and method of manufacturing the same |
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