TWI706866B - Printing screen system with vibration structure and printing method - Google Patents

Abstract

A printing screen system with a vibrating structure includes: a scraper and a printing screen, the printing screen includes a screen frame and a printing screen, the printing screen is stretched and fixed on the screen; wherein, The scraper or the screen frame includes at least one vibration device, and the scraper or the screen frame is vibrated by the at least one vibration device.

Description

Printing screen system with vibration structure and printing method

The present invention is a printing screen and printing method, in particular to a printing screen and printing method with a vibration structure.

In the prior art, the structure of solar cells usually includes finger lines and bus bars, and most solar cell designs use very fine "finger electrodes". The photoelectrons collected in the effective area are transferred to the larger "monolithic electrode", and then transferred to the circuit system of the component. In order to increase the efficiency of the solar cell, the finger electrode should be thin and tall in design, so that the height and width in the solar cell structure are better, and the energy conversion efficiency is high. In the prior art, the finger electrodes are perpendicular to the monolithic electrode and are distributed on the silicon wafer (wafer) in an equidistant manner. With the improvement of the mesh production technology, the finger electrodes are becoming thinner and thinner.

In the prior art, the finger electrodes are usually made by screen printing. The finger electrodes are high-precision circuits with wire diameters below 30 μm. When printing with a screen, the paste is placed on the screen, and the squeegee of the printer is moved, and the squeegee moves the paste to roll through the opening of the screen, and finally the paste is printed on the substrate on. It can be understood from the above process that when the paste passes through the high-precision circuit of the screen (the wire diameter is less than 30 μm), the manufacturing process will become more and more difficult, and the material to be printed is generally less changeable. In the conventional technology, the thixotropy of the slurry is generally changed. However, when the formulation of the material itself is often changed to achieve good fluidity, the conductive efficiency of the slurry of this formulation will often decrease at the same time. However, in solar cells, high-viscosity pastes are required to have finer and higher lines after printing to increase power generation efficiency.

Based on the above reasons, how to use high-viscosity paste to transfer the ink in the high-precision circuit (less than 30μm) process without breaking the printed pattern, and at the same time, it can print a thin and high enough pattern. It is a problem to be solved.

To achieve the foregoing objective, the present invention provides a printing screen system with a vibrating structure, including: a squeegee and a printing screen, the printing screen including a screen frame and a printing screen, the printing screen is stretched and combined Fixed on the screen frame; wherein, the scraper or the screen frame includes at least one vibration device, and the scraper or the screen frame is vibrated by the at least one vibration device.

Preferably, the scraper further includes a body, a fixing member, and a scraper blade. The body includes at least one accommodating cavity, the at least one accommodating cavity accommodates the at least one vibration device, and the fixing member seals the at least An accommodating cavity, and the scraper is vibrated by the at least one vibrating device.

Preferably, the body includes at least one locking hole, the fixing member includes at least one perforation, and at least one locking component passes through the at least one perforation and is locked to the at least one locking hole to fix the fixing member The at least one accommodating cavity is sealed on the body.

Preferably, the fixing member includes at least one guide hole, and at least one wire connecting the at least one vibration device passes through the at least one guide hole and is connected to a control device.

Preferably, the screen frame further includes an outer frame and an inner frame fixture, the outer frame includes at least one accommodating cavity, the at least one accommodating cavity accommodates the at least one vibration device, and the inner frame fixture is clamped Closed to the outer frame and sealing the at least one accommodating cavity, the screen frame is vibrated by the at least one vibrating device.

Preferably, the outer frame has a first oblique side, the inner frame jig has a second oblique side corresponding to the first oblique side, and the inner frame jig is engaged to the outer by the second oblique side Box.

Preferably, the at least one accommodating cavity is arranged on two sides of the outer frame in an opposite manner.

Furthermore, the present invention also provides a printing method of a printing screen with a vibrating structure, which includes the following steps: arranging at least one vibrating device on a squeegee; setting the paste on a printing starting point of a printing screen; The squeegee is used to scrape the slurry into the printing screen from the printing starting point; when the squeegee is scraped into the slurry, the at least one vibration device starts to vibrate and drives the squeegee to begin to vibrate; The slurry is scraped into the printing screen and scraped to a printing end point on the printing screen; and the at least one vibration device stops vibration and stops the squeegee.

Preferably, the scraper includes a body, a fixing member and a scraper blade. The body includes at least one accommodating cavity, the at least one accommodating cavity accommodates the at least one vibration device, and the fixing member seals the at least one In the containing cavity, the scraper is vibrated by the at least one vibrating device.

Preferably, the body includes at least one locking hole, the fixing member includes at least one perforation, and at least one locking component passes through the at least one perforation and is locked to the at least one locking hole to fix the fixing member The at least one accommodating cavity is sealed on the body.

Furthermore, the present invention provides a printing method for a printing screen with a vibration structure, which includes the following steps: arranging at least one vibration device on a printing screen; and setting the paste on a printing starting point of the printing screen The paste is scraped into the printing screen by a squeegee from the printing starting point; when the squeegee is scraped into the paste, the at least one vibration device starts to vibrate and drives the printing screen to vibrate; the printing screen While the plate is vibrating, the squeegee scrapes the slurry into the printing screen and scrapes it to a printing end point on the printing screen; and the at least one vibration device stops vibrating and stops the printing screen.

Preferably, the screen frame includes an outer frame and an inner frame fixture, the outer frame includes at least one accommodating cavity, the at least one accommodating cavity accommodates the at least one vibration device, and the inner frame fixture is engaged To the outer frame and seal the at least one accommodating cavity, and the screen frame is vibrated by the at least one vibration device.

Preferably, the outer frame has a first oblique side, the inner frame jig has a second oblique side corresponding to the first oblique side, and the inner frame jig is engaged to the outer by the second oblique side Box.

The following describes the implementation of the present invention in more detail with the drawings and component symbols, so that those who are familiar with the art can implement it after studying this manual.

FIG. 1 is a schematic diagram illustrating the structure of a printing screen system with a vibration structure according to an embodiment of the present invention. 1, in an embodiment of the present invention, a printing screen system 1 with a vibration structure includes a squeegee 10 and a printing screen 20. The printing screen 20 includes a screen frame 201 and a printing screen 203. The mesh cloth 203 is stretched and fixed on the screen frame 201, the scraper 10 can be set on a printing press table (not shown in the figure); wherein the scraper 10 or the screen frame 201 includes at least one vibration device (shown in the figure) 2a and Fig. 4), the scraper 10 or the screen frame 201 is vibrated by the at least one vibrating device. In addition, the slurry 30 will be placed on the mesh cloth 203. When the slurry 30 is scraped into the mesh cloth 203 using the scraper 10, the scraper 10 or the screen frame 201 will vibrate, so that the scraper 10 or the screen frame 201 has a vibration frequency. In turn, the paste 30 will penetrate the opening pattern of the mesh 203 while vibrating, and finally the high-viscosity paste 30 can be continuously printed on the printed object, and the printed pattern meets the requirements of high-definition wiring ( The wire diameter is less than 30μm or less) and has a sufficient height.

The structure of the squeegee 10 and the printing screen 20 in the printing screen system 1 with a vibration structure in this case will now be described in detail.

Fig. 2a is a schematic diagram illustrating the squeegee structure of an embodiment of the present invention from a first perspective; Fig. 2b is a schematic diagram illustrating the squeegee structure of an embodiment of the present invention from a second perspective. 2a and 2b, in an embodiment of the present invention in which the vibrating device is arranged on the scraper 10, the scraper 10 includes a body 101, a fixing member 103, and a doctor blade 105, and the body 101 includes at least one accommodating In the cavity 1011, at least one accommodating cavity 1011 accommodates at least one vibration device 1013. For example, one accommodating cavity 1011 can accommodate one vibration device 1013, or one accommodating cavity 1011 can accommodate more than two vibration devices 1013. The fixing member 103 seals the accommodating cavity 1011 and has a space for accommodating the vibration device 1013, and the scraper 10 can be vibrated by the vibration of the vibration device 1013. Furthermore, in an embodiment of the present invention, the vibration device 1013 may be a wireless vibration device, and in other embodiments of the present invention, the vibration device 1013 may be a wired vibration device. Preferably, the number of the accommodating cavity 1011 can be two, and they are arranged on the main body 101 in a bilaterally symmetrical manner.

To further explain, the fixing member 103 includes at least one guide hole 109. When the vibration device 1013 is a wired vibration device, a wire (not shown in the figure) connected to the vibration device 1013 can pass through the guide hole 109 and be connected to A control device (not shown in the figure), and the vibration frequency of the vibration device 1013 is controlled by the control device. In addition, the body 101 includes at least one locking hole 1015, and the fixing member 103 includes at least one perforation 1031. At least one locking member 107 can pass through the perforation 1031 and be locked to the locking hole 1015, so that the fixing member 103 is fixed to The main body 101 seals the accommodating cavity 1011. It should be understood that the fixing member 103 can be fixed to the main body 101 in other ways, such as magnetic attraction or snap-fitting.

Fig. 3 is a schematic diagram for explaining the structure of a printing screen according to another embodiment of the present invention; Fig. 4 is an exploded view for explaining the structure of a printing screen according to another embodiment of the present invention; Fig. 5a is a schematic diagram , Is used to illustrate the cross-sectional structure of the printing screen of another embodiment of the present invention; FIG. 5b is a schematic diagram to illustrate the partially enlarged structure in FIG. 5a. 3 to 5b, in an embodiment of the present invention in which the vibration device is disposed on the screen frame 201, the screen frame 201 further includes an outer frame 2011 and an inner frame fixture 2013, and the outer frame 2011 includes at least one The accommodating cavity 2015, the accommodating cavity 2015 accommodating the vibrating device, the inner frame fixture 2013 is a one-time-shaped structure, and is snapped into the outer frame 2011 to seal the accommodating cavity 2015, and the screen frame 201 can use the vibrating device The vibration of the vibration. Wherein, the accommodating cavity 2015 is arranged on two sides of the outer frame 2011 in a relative manner, for example, as shown in FIG. In addition, similarly, in an embodiment of the present invention, the vibration device provided in the screen frame 201 may be a wireless vibration device, while in other embodiments of the present invention, the vibration device provided in the screen frame 201 may be a wireless vibration device. Wired vibration device.

Referring again to FIGS. 5a and 5b, in an embodiment of the present invention, the outer frame 2011 has a first oblique side S1, and the inner frame fixture 2013 has a second oblique side S2 corresponding to the first oblique side S1. , The inner frame fixture 2013 can be locked into the outer frame 2011 by the second oblique side S2, so that the outer frame 2011 and the inner frame fixture 2013 can be snapped and fixed together by the corresponding two oblique sides. To further illustrate, the outer frame 2011 includes at least one guide hole 2017, and the guide hole 2017 and the accommodating cavity 2015 communicate with each other. When the vibration device provided in the screen frame 201 is a wired vibration device, the wire ( Not shown in the figure) can pass through the guide hole 2017 and be connected to a control device (not shown in the figure), and the vibration frequency of the vibration device is controlled by the control device.

On the other hand, the present invention also provides a printing method of a printing screen with a vibrating structure, which will now be further explained with the schematic diagram.

6 is a schematic diagram for explaining the implementation of a printing screen system with a vibration structure according to an embodiment of the present invention; FIG. 7 is a flowchart for explaining a printing screen with a vibration structure according to an embodiment of the present invention The printing method. 6 and 7, a printing screen method with a vibration structure according to an embodiment of the present invention includes steps S101 to S111. Step S101 is: setting at least one vibration device on a scraper 10; and step S103 is: The material 30 is set at a printing starting point P1 on a printing screen 20; Step S105 is: the squeegee 10 is used to scrape the paste 30 from the printing starting point P1 into the printing screen 20; Step S107 is: the squeegee 10 is used to scrape the paste At 30 o'clock, the vibration device starts to vibrate at a frequency and drives the squeegee 10 to vibrate; step S109 is: the squeegee 10 vibrates while scraping the slurry 30 into the printing screen 20 and scraping it to a printing end point on the printing screen 20 P2; and step S111 is: the vibration device stops vibration, and the scraper 10 stops vibration. In this printing method, the squeegee can scrape the paste into the printing screen while vibrating, so that the paste can penetrate through the opening pattern on the printing screen while vibrating, and finally the high viscosity paste can be printed continuously. It is made on the object to be printed, and the printed pattern meets the requirements of high-precision circuit (line diameter less than 30μm) and has sufficient height.

In addition, similarly, referring to FIGS. 2a and 2b again, the scraper 10 includes a body 101, a fixing member 103, and a doctor blade 105. The body 101 includes at least one accommodating cavity 1011, and at least one accommodating cavity 1011 is accommodated. At least one vibration device 1013, for example, one containing cavity 1011 can contain one vibration device 1013, or one containing cavity 1011 can contain more than two vibration devices 1013. The fixing member 103 seals at least one accommodating cavity 1011, and the scraper 10 can be vibrated by the vibration of the vibrating device 1013. Furthermore, the body 101 includes at least one locking hole 1015, and the fixing member 103 includes at least one through hole 1031. The at least one locking member 107 passes through the at least one through hole 1031 and is locked to the at least one locking hole 1015, so that the fixing member 103 is fixed on the main body 101 and seals at least one accommodating cavity 1013.

FIG. 8 is a flowchart for explaining a printing method of a printing screen with a vibration structure according to another embodiment of the present invention. Please refer to FIG. 6 and FIG. 8, a printing screen method with a vibration structure according to another embodiment of the present invention includes steps S201 to S211. Step S201 is: setting at least one vibration device on a printing screen 20; Step S203: setting the paste 30 at a printing starting point P1 on the printing screen 20; Step S205: Disposing the paste with a squeegee 10 30 is scraped into the printing screen 20 from the printing starting point P1; step S207 is: when the squeegee 10 is scraped into the paste 30, the vibration device starts to vibrate and drives the printing screen 20 to vibrate; step S209 is: the printing screen 20 vibrates At the same time, the squeegee 10 scrapes the paste 30 into the printing screen 20 and scrapes it to a printing end point P2 on the printing screen 20; and step S211 is: the vibration device stops the vibration, and the printing screen 20 stops the vibration. In this printing method, when the squeegee scrapes the paste into the printing screen, the printing screen can continue to vibrate, so that the paste can penetrate through the opening pattern on the printing screen while vibrating, and finally make the high viscosity paste The material can be printed on the printed material continuously, and the printed pattern meets the requirements of high-precision circuit (line diameter less than 30μm) and has sufficient height.

In addition, similarly, referring to FIGS. 3 to 5b again, the screen frame 201 includes an outer frame 2011 and an inner frame fixture 2013, and the outer frame 2011 includes at least one accommodating cavity 2015, and at least one accommodating cavity 2015 accommodates At least one vibration device, the inner frame fixture 2013 is engaged in the outer frame 2011 and seals the containing cavity 2015, and the screen frame 201 is vibrated by the vibration of the at least one vibration device. Furthermore, the outer frame 2011 has a first oblique side S1, the inner frame fixture 2013 has a second oblique side S2 corresponding to the first oblique side S1, and the inner frame fixture 2013 is locked to the outer by the second oblique side S2 Box 2011.

In summary, the present invention successfully provides a printing screen system and printing method with a vibration structure. With the printing system and printing method of the present invention, the paste can penetrate through the opening patterns on the printing screen while vibrating, so that the high-viscosity paste can be continuously printed on the object to be printed, and the printed pattern It meets the requirements of high-precision circuits (wire diameter less than 30μm) and has sufficient height.

The above descriptions are only used to explain the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modifications or changes related to the present invention made under the same spirit of the invention , Should still be included in the scope of the invention's intention to protect.

1: Printing screen system 10: Scraper 20: Printing screen 30: Slurry 101: body 103: fixed parts 105: scraper blade 107: Locking parts 109: Guiding Hole 1011: containing cavity 1013: Vibration device 1015: Lock hole 1031: Piercing 201: Screen Frame 203: printing mesh 2011: Outer frame 2013: inner frame governance 2015: containing cavity 2017: pilot hole S1: The first hypotenuse S2: second hypotenuse P1: starting point P2: End S101-S111: steps S201-S211: steps

Those with ordinary knowledge in the art can have a better understanding of the various aspects of the present invention and its specific features and advantages after reading the detailed description below with reference to the drawings. The drawings include: FIG. 1 is a schematic diagram illustrating the structure of a printing screen system with a vibration structure according to an embodiment of the present invention; 2a is a schematic diagram illustrating the structure of a scraper from a first perspective according to an embodiment of the present invention; 2b is a schematic diagram illustrating the structure of a scraper from a second perspective according to an embodiment of the present invention; 3 is a schematic diagram illustrating the structure of a printing screen according to another embodiment of the present invention; 4 is an exploded view illustrating the structure of a printing screen according to another embodiment of the present invention; 5a is a schematic diagram illustrating a cross-sectional structure of a printing screen according to another embodiment of the present invention; Figure 5b is a schematic diagram illustrating a part of the enlarged structure in Figure 5a; 6 is a schematic diagram illustrating an implementation of a printing screen system with a vibration structure according to an embodiment of the present invention; 7 is a flowchart illustrating a printing method of a printing screen with a vibration structure according to an embodiment of the present invention; and FIG. 8 is a flowchart illustrating a printing method of a printing screen with a vibration structure according to another embodiment of the present invention.

1: Printing screen system

10: Scraper

20: Printing screen

30: Slurry

201: Screen Frame

203: printing mesh

Claims (5)

A printing screen system with a vibrating structure includes: a scraper and a printing screen, the printing screen includes a screen frame and a printing screen, the printing screen is stretched and fixed on the screen; wherein, The scraper includes at least one vibrating device, and the scraper is vibrated by the at least one vibrating device. The scraper further includes a main body, a fixing member, and a scraper blade. The main body includes at least one accommodating cavity. An accommodation cavity accommodates the at least one vibration device, the fixing member seals the at least one accommodation cavity, and the scraper is vibrated by the at least one vibration device. The printing screen system according to item 1 of the scope of patent application, wherein the body includes at least one locking hole, the fixing member includes at least one perforation, and at least one locking component passes through the at least one perforation and is locked To the at least one locking hole, the fixing member is fixed on the body and seals the at least one accommodating cavity. The printing screen system according to claim 1, wherein the fixing member includes at least one guide hole, and at least one wire connecting the at least one vibrating device passes through the at least one guide hole and is connected to a Control device. A printing method of a printing screen with a vibrating structure includes the following steps: at least one vibrating device is arranged on a squeegee; a paste is set on a printing starting point of a printing screen; the paste is applied by the squeegee Scrape into the printing screen from the printing starting point; when the scraper scrapes into the slurry, the at least one vibrating device starts to vibrate and drives the scraper to vibrate; the scraper vibrates while scraping the slurry into the printing screen And scrape to a printing end point on the printing screen; and The at least one vibration device stops vibrating and stops the scraper. The scraper includes a body, a fixing member, and a scraper blade. The body includes at least one accommodating cavity, and the at least one accommodating cavity accommodates the At least one vibrating device, the fixing part seals the at least one accommodating cavity, and the scraper is vibrated by the at least one vibrating device. The printing method according to claim 4, wherein the body includes at least one locking hole, the fixing member includes at least one perforation, and at least one locking component passes through the at least one perforation and is locked to the At least one locking hole is used to fix the fixing member on the body and seal the at least one accommodating cavity.

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