TW202333545A - Printing device - Google Patents

Abstract

The present invention provides a printing device to print on a substrate mounted with a plurality of electronic elements. The printing device includes a metallic plate and a scrapper. The metallic plate includes a first surface and a second surface opposite to the first surface. The first surface used to press close to the substrate is faced to a surface of the substrate, in which a plurality of blind holes are disposed on the first surface. These blind holes are aligned to the electronic elements, and a recess disposed on the second surface is used to contain an adhesive. A scrapped end of the scrapper can extend into the recess and perform a printing process by moving in the recess. The metallic plate further includes at least one through holes, and the adhesive is scrapped to the surface of the substrate by the scrapped end through the through holes.

Description

printing device

The present invention relates to a printing device, and in particular to a printing device that can directly print on a substrate having a plurality of electronic components on its surface.

Existing substrate printing technology or devices are used to print adhesive materials such as solder paste or optical glue onto the substrate to be printed. They mainly transfer the pattern to be printed to a printed steel plate and then process it to form through holes on the steel plate. Taking solder paste printing as an example, during printing, adhesive material is pre-coated on one side of the printed steel plate manually or with a printing machine, and the printed steel plate is aligned to the substrate to be printed. Then use the thrust of the scraper to push the adhesive material into these through holes, so that the adhesive material adheres to the corresponding printing position of the substrate to be printed. Finally, by removing the printed steel plate, the electronic components can be adhered to the solder paste and then sent to the reflow oven to solidify the solder paste.

With the evolution of existing semiconductor manufacturing processes, in order to improve the operational stability of these electronic components or chips, multiple passive components must be installed on the substrate to be printed before printing the adhesive material. However, when existing printing devices print on such a substrate to be printed that has passive components installed on it, it is difficult to transfer the adhesive material to a predetermined position on the substrate to be printed, and it is also easy to cause damage to the passive components. Therefore, it is still necessary to improve existing printing equipment to solve the above problems.

Based on the problems faced by the prior art, an object of the present invention is to provide a printing device suitable for printing a substrate with multiple electronic components on its surface.

Another object of the present invention is to provide a printing device that can reduce the waste of glue material during printing.

In order to achieve the above object, the present invention provides a printing device for printing a substrate with a plurality of electronic components on the surface. The printing device includes a metal plate and a scraper. The metal plate is used to be attached to the substrate. The metal plate includes a first side and a second side opposite to the first side. The first side faces the surface of the substrate. The first side is provided with a plurality of blind holes. These blind holes are opposite to the first side. These electronic components are located, and at least one groove is formed on the second surface to accommodate the adhesive material. The squeegee end of the squeegee can extend into the groove and move to print. The metal plate is also provided with a plurality of through holes connecting the first surface and at least one groove, and the scraper end scrapes the adhesive material to the surface of the substrate through these through holes.

In order to achieve the above object, the present invention also provides a printing device for printing a substrate with a plurality of electronic components on the surface. The printing device includes a metal plate and a scraper. A metal plate has a first side and a second side opposite to the first side. The first side faces the surface of the substrate for being attached to the substrate. The first side is provided with a plurality of blind holes, and these blind holes are aligned. These electronic components, and at least a groove is formed on the second surface to accommodate the adhesive material. The squeegee has a squeegee end, wherein the squeegee end also has at least one sub-squeegee end, and each sub-squeegee end can extend into a corresponding groove and move for printing. The at least one groove of the metal plate is further provided with a plurality of through holes connecting the first surface and the at least one groove, and the squeegee end prints the glue material onto the surface of the substrate through these through holes.

In a preferred embodiment, the projected length of the blind hole on the first surface is greater than the projected length of the electronic component on the surface.

In a preferred embodiment, the maximum depth of the blind hole on the first surface is greater than the maximum height of the electronic component on the surface.

In a preferred embodiment, the projected length of the squeegee end on the second surface is smaller than the projected length of the groove on the second surface.

In a preferred embodiment, the projected length of the squeegee end on the second surface is greater than the projected length of the through hole on the second surface.

In a preferred embodiment, the groove also has at least two sub-grooves, the scraper end has at least two sub-scraper ends, and the at least two sub-scraper ends correspond to the at least two sub-grooves.

In a preferred embodiment, the groove also has at least one protrusion, the scraper end has at least one recess, and the at least one recess corresponds to and accommodates the at least one protrusion.

In a preferred embodiment, the projected length of the protrusion on the first surface is smaller than the projected length of the recess on the second surface.

In a preferred embodiment, the projected length of the sub-scraper end on the second surface is smaller than the projected length of the at least one sub-groove on the first surface.

According to the above, in the embodiment of the present invention, the first side of the metal plate has a plurality of blind holes that can respectively face the plurality of electronic components located on the substrate, and the second side has grooves to accommodate the glue material. The metal plate also has a plurality of blind holes. A plurality of through holes are provided to connect the first surface and the groove, and the scraper end scrapes the adhesive material to the surface of the substrate through these through holes and moves it for printing. In this way, the printing device of the present invention can print on a substrate with multiple electronic components on the surface, thereby avoiding damage to the electronic components during the printing process and reducing the waste of glue material.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. Directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only for reference to the directions in the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the invention. In addition, the XYZ coordinate axes in the drawings are only used to illustrate the embodiments of the present invention, but are not used to limit the patentable scope of the present invention.

Please refer to FIG. 1A , which is a schematic cross-sectional view of a printing device according to an embodiment of the present invention. First, as shown in FIG. 1A , the printing device 10 is used to print the substrate 20 . The substrate 20 can be a printed circuit board (PCB), a metal-based printed circuit board (MPCB), a flexible printed circuit board (FPCB) or other A suitable substrate, wherein multiple electronic components are provided on the substrate 20 (three electronic components 211, 212, 213 are schematically shown in FIG. 1A, where the electronic components can be various active components or passive components, etc., this The invention is not limited to this). In addition, the printing device 10 includes a metal plate 11 and a scraper 12 . The metal plate 11 includes a first side 111 and a second side 112 opposite to the first side 111 . The scraper 12 has a scraper end 121 . The material of the metal plate 11 can be stainless steel or other alloy plates suitable for processing. The first surface 111 of the metal plate 11 faces the surface 21 of the substrate 20 so that the first surface 111 can be attached to the substrate 20 . In addition, what is particularly special is that the first surface 111 of the metal plate 11 is provided with a plurality of blind holes 14. These blind holes 14 are for electronic components located on the substrate 20. That is to say, each electronic component 211, Either 212 or 213 can be aligned to one of the blind holes 14 on the first surface 111 .

Next, please refer to FIG. 1B , which is a partially enlarged cross-sectional view of the printing device 10 according to the embodiment of FIG. 1A . Specifically, please refer to FIG. 1A and FIG. 1B at the same time. The first surface 111 of the metal plate 11 is parallel to the surface 21 of the substrate 20 . A plurality of blind holes 14 are arranged on the first surface 111 , and each blind hole 14 The position corresponds to one or more electronic components that have been fixed on the surface 21 of the substrate 20 . For example: Therefore, the blind hole 14 is concavely disposed toward the second surface 112, where the length of the blind hole 14 in the X direction is L1, the length of the electronic component 211 in the X direction is L2, and L1 is greater than L2. In addition, the maximum depth of the blind hole 14 in the Z direction is H1, and the maximum height of the electronic component 211 in the Z direction is H2, and H1 is greater than H2.

Next, please refer to FIG. 2 . FIG. 2 is a schematic cross-sectional view of the printing device 10 during operation according to the embodiment of FIG. 1A . As shown in Figure 2, when the metal plate 11 is attached to the substrate 20, since the length L1 is greater than L2 and the height H1 is greater than H2, the corresponding blind holes 14 can safely accommodate the electronic components 211 without causing any damage. Collision with the electronic component 211 during the printing process may cause damage to the electronic component 211 . This can also prevent the adhesive material 13 from overflowing during printing, causing a short circuit or open circuit in the circuit near the electronic component 211 on the substrate 20 . In particular, in FIGS. 1A , 1B and 2 , the cross-sectional shape of the blind hole 14 is shown as a rectangle. However, the present invention is not limited thereto. The shape of the blind hole 14 can be any suitable geometric shape, such as a hemispherical shape. , cylindrical or other shapes suitable for accommodating electronic components 211 .

Please continue to refer to FIG. 1A . The second surface 112 of the metal plate 11 is provided with at least one groove 113 . The groove 113 is suitable for placing or filling some adhesive materials 13 . The groove 113 is concave toward the first surface 111 . Next, the scraper 12 has a scraper end 121, and the scraper end 121 corresponds to the groove 113, so the scraper end 121 can extend into the groove 113 to scrape the glue material 13 for printing. In addition, the metal plate 11 also has a plurality of through holes 15 (three through holes 15 are schematically shown in FIG. 1A , but it is not limited thereto), and each through hole 15 is arranged in the groove 113 , the groove 113 and the first surface 111 of the metal plate 11 can be connected through the through hole 15 . In this way, when the adhesive material 13 is disposed in the groove 113 , the adhesive material 13 can be printed on the surface 21 of the substrate 20 through each of the through holes 15 . In this embodiment, the adhesive material 13 can be various conductive adhesives, insulating adhesives, optical adhesives or other curable adhesives that can be used for printing, and the present invention is not limited thereto. The cross-sectional shapes of the groove 113 and the through-hole 15 are shown as rectangular for ease of explanation. However, the present invention is not limited thereto. The groove 113 can also be any other geometric shape suitable for accommodating the adhesive material 13. The through-hole 15 can also be designed to have a cross-sectional shape suitable for allowing the glue material 13 to pass through.

Next, please refer to FIG. 1C , which is a partial enlarged cross-sectional view of the printing device according to the embodiment of FIG. 1A . Please refer to Figure 1A and Figure 1C at the same time. Specifically, in this embodiment, the projected length of the end surface of the squeegee end 121 on the second surface is L3, the projected length of the groove 113 on the second surface 112 is L4, and L3 is smaller than L4. In addition, the projected length of each through hole 15 on the first surface 111 is L5 (one L5 is schematically shown in FIG. 1C ), and L3 is larger than L5, and L4 is larger than L5. Please refer to Figure 2 as well. When the metal plate 11 is attached to the substrate 20, since the length L3 is less than L4, the scraper end 121 of the scraper 12 can extend into the groove 13 and move in the Y direction, and The glue material 13 will not overflow to the second surface 112 of the metal plate 11 , thereby increasing the usage ratio of the glue material 13 and reducing the manufacturing cost. In addition, since the length L3 is greater than L5 and L4 is greater than L5, the glue material 13 can also be directly scraped into each through hole 15 by the scraper end 121 without spilling on the surface 21 of the substrate 20 .

Next, please refer to FIG. 3 . FIG. 3 is a schematic cross-sectional view of the printing device 10 after operation according to the embodiment of FIG. 1 . As shown in Figure 3, after the adhesive material 13 is scraped into each through hole 15, the adhesive material 13 will be fixed on the surface 21 of the substrate 20. After that, the metal plate 11 and the scraper 12 of the printing device 10 are controlled to move away from the substrate 20. Then, the adhesive material 13 can be printed and fixed to the surface 21 of the substrate 20 in a predetermined shape and position through each through hole 15, wherein the predetermined shape and position of the adhesive material 13 on the surface 21 of the substrate 20 can be determined by each through hole. Determined by the shape and corresponding position of 15. Obviously, the first surface 111 of the metal plate 11 is designed with a plurality of blind holes 14 so that after printing is completed, the electronic components 211 , 212 and 213 can be exposed.

Please continue to refer to FIG. 4 , which is a schematic cross-sectional view of a printing device according to another embodiment of the present invention. First, as shown in FIG. 4 , the printing device 10A is similar to the printing device 10 in FIG. 1A , so the same components are given the same reference numerals and will not be described again. As shown in FIG. 4 , the difference between the printing device 10A and the printing device 10 is that when the electronic components 212 on the surface 21 of the substrate 20 are arranged in the grooves 113 of the metal plate 11, they must be in the grooves of the metal plate 11. 113 is provided with a blind hole 14a at the position corresponding to the electronic component 212. This blind hole 14a forms a raised portion 1133 in the groove 113 of the metal plate 11. The raised portion 1133 can distinguish two sub-sections in the groove 113. The groove area 1131 and the groove area 1132, and therefore, a recessed portion 1213 must also be formed on the scraper end 121 of the scraper 12 at the protruding portion 1133 of the corresponding blind hole 14a. The recessed portion 1213 of the scraper 12 divides the scraper end 121 into two sub-squeegee ends 1211 and 1212. Obviously, the sub-squeegee end 1211 and the sub-squeegee end 1212 can respectively correspond to the sub-groove areas 1131 and 1132.

Please refer to FIG. 5A again, which is a schematic cross-sectional view of the printing device 10A during operation according to the embodiment of FIG. 4 . As shown in Figure 5A, specifically, in this embodiment, when the printing device 10A is used to print the adhesive material 13, the adhesive material 13 is filled in the sub-groove area 1131 and the sub-groove area 1132. When the metal plate 11 is pasted When closed on the substrate 20, the two sub-squeegee ends 1211 and 1212 on the squeegee end 121 can respectively extend into the two sub-groove areas 1131 and 1132 of the groove 113 to scrape. When the adhesive material 13 is printed, the sub-squeegee end 1211 and the sub-squeegee end 1212 can move in the Y direction to scrape the adhesive material 13 into the through hole 15 . In this way, the adhesive material 13 can be printed on the surface 21 of the substrate 20 in a predetermined shape and position through each through hole 15 . Obviously, the first surface 111 of the metal plate 11 is configured with a plurality of blind holes 14 so that after printing is completed, the electronic components 211 , 212 and 213 can be exposed.

FIG. 5B is a partially enlarged cross-sectional schematic diagram showing the printing device 10A during operation according to the embodiment of FIG. 4 . Please refer to FIG. 5A and FIG. 5B . In this embodiment, the sub-squeegee end 1211 has a projected length L6 on the first surface 111 of the metal plate 11, and the projected length of the sub-groove 1131 on the second surface 112 is L9, where L6 is smaller than L9 so that the sub-squeegee end End 1211 can extend into sub-groove 1131. The projected length of the sub-squeegee end 1212 on the first surface is L7, and the projected length of the sub-groove 1132 on the second surface 112 is L10, where L7 is smaller than L10 so that the sub-squeegee end 1212 can extend into the sub-groove 1132 middle. In addition, the squeegee end 121 also has at least one recessed portion 1213, and the metal plate 11 also has at least one protruding portion 1133 corresponding to the recessed portion 1213, wherein the projected length of the recessed portion 1213 on the first surface 111 is L8, and the protruding portion 1133 has a projection length of L8 on the first surface 111. The projected length of the portion 1133 on the second surface is L11, and L11 is smaller than L8. The recessed portion 1133 of the squeegee end 121 can accommodate the protruding portion 1133 of the metal plate 11. In this way, the printing device 10A of the present invention can correspond to the design of the upper surface 21 of the different substrates 20 and correspondingly change the configuration of the squeegee end 121 and the groove 113 on the metal plate 11, so that the adhesive material 13 can be accurately printed on the surface 21. The waste of adhesive material 13 can also be reduced at locations to be printed, such as soldering pads, thereby reducing manufacturing costs. In addition, since the entire squeegee end 121 can be accommodated in the groove 113 of the metal plate 11, the sum of the projected lengths L6, L7, and 8 is smaller than the sum of the projected lengths L9, L10, and L11, that is, L6+L7+ L8 is smaller than L9+L10+L11. In this embodiment, FIGS. 5A and 5B schematically illustrate that a depression 1213 can correspond to and accommodate a protrusion 1133 . However, depending on the predetermined printing position of the substrate 20 and the placement of electronic components on the surface 21 , a scraper The recess of the glue end 121 can also correspond to and accommodate the protrusions on multiple metal plates 11 at the same time, and the present invention is not limited to this.

To sum up, in the embodiment of the present invention, the first side of the metal plate has a plurality of blind holes that can respectively face a plurality of electronic components on the substrate, and the second side has grooves to accommodate the glue material. The plate is also provided with a plurality of through holes connecting the first surface and the groove, and the squeegee end scrapes the adhesive material to the surface of the substrate through these through holes and moves it for printing. In this way, the printing device of the present invention can print on a substrate with multiple electronic components on the surface, thereby avoiding damage to the electronic components during the printing process and reducing the waste of glue material.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made based on the patentable scope and content of the present invention are It is still within the scope of the patent of this invention. In addition, the terms "first" and "second" mentioned in this specification or the patent application are only used to name components or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit on the number of components. .

10, 10A: Printing device 11:Metal sheet 111: Side 1 112:Second side 113: Groove 1131, 1132: sub-groove area 1133:Protruding part 12:Scraper 121: Squeegee end 1211, 1212: Sub-squeegee end 1213:dent 13: Adhesive material 14, 14a: blind hole 15:Through hole 20:Substrate 21:Surface 211, 212, 213: Electronic components L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11: projection length

Figure 1A is a schematic cross-sectional view of a printing device according to an embodiment of the present invention; Figure 1B is a partial enlarged cross-sectional schematic view of the printing device according to the embodiment of Figure 1A; Figure 1C is a partial enlarged cross-sectional schematic view of the printing device according to the embodiment of Figure 1A; Figure 2 is a schematic cross-sectional view showing the printing device during operation according to the embodiment of Figure 1A; Figure 3 is a schematic cross-sectional view of the printing device after completion of work according to the embodiment of Figure 1A; Figure 4 is a schematic cross-sectional view of a printing device according to another embodiment of the present invention; Figure 5A is a schematic cross-sectional view showing the printing device during operation according to the embodiment of Figure 4; and FIG. 5B is a partial cross-sectional enlarged schematic diagram showing the operation of the printing device according to the embodiment of FIG. 4 .

10:Printing device

11:Metal sheet

111: Side 1

112:Second side

12:Scraper

121: Squeegee end

13: Adhesive material

14:Blind hole

15:Through hole

20:Substrate

21:Surface

211, 212, 213: Electronic components

Claims (10)

A printing device is used to print a substrate. A plurality of electronic components are arranged on a surface of the substrate. The printing device includes: A metal plate has a first side and a second side opposite to the first side. The first side faces the surface of the substrate for being attached to the substrate, wherein the first side is configured with a plurality of Blind holes are aligned with the electronic components, and a groove is formed on the second surface to accommodate a glue material; and A squeegee having a squeegee end, wherein the squeegee end can extend into the groove and move to perform printing; The groove of the metal plate is further provided with a plurality of through holes connecting the first surface and the groove, and the squeegee end prints the glue material onto the surface of the substrate through the through holes. A printing device is used to print a substrate. A plurality of electronic components are arranged on a surface of the substrate. The printing device includes: A metal plate has a first side and a second side opposite to the first side. The first side faces the surface of the substrate for being attached to the substrate, wherein the first side is configured with a plurality of Blind holes are aligned with the electronic components, and at least one groove is opened on the second surface to accommodate a glue material; and A squeegee having a squeegee end, wherein the squeegee end also includes at least one sub-squeegee end, and each of the sub-squeegee ends can extend into the corresponding groove and move to perform printing; The at least one groove of the metal plate is further provided with a plurality of through holes connecting the first surface and the at least one groove, and the squeegee end prints the adhesive material onto the substrate through the through holes. the surface. The printing device of claim 1 or 2, wherein the projected length of the blind hole on the first surface is greater than the projected length of the electronic component on the surface. The printing device of claim 1 or 2, wherein the maximum depth of the blind hole on the first surface is greater than the maximum height of the electronic component on the surface. The printing device of claim 1 or 2, wherein the projected length of the squeegee end on the second surface is smaller than the projected length of the groove on the second surface. The printing device of claim 1 or 2, wherein the projected length of the squeegee end on the second surface is greater than the projected length of the through hole on the second surface. The printing device of claim 2, wherein the groove further has at least two sub-grooves, the scraper end has at least two sub-squeegee ends, and the at least two sub-squeegee ends correspond to the at least two sub-grooves. The printing device of claim 1 or 2, wherein the groove further has at least one protrusion, the scraper end has at least one recess, and the at least one recess corresponds to and accommodates the at least one protrusion. The printing device of claim 8, wherein the projected length of the protrusion on the first surface is smaller than the projected length of the depression on the second surface. The printing device of claim 2 or 7, wherein the projected length of the sub-squeegee end on the second surface is smaller than the projected length of the at least one sub-groove on the first surface.

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