CN212216032U - Precision welting spraying device suitable for COF substrate - Google Patents
Precision welting spraying device suitable for COF substrate Download PDFInfo
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- CN212216032U CN212216032U CN202020673819.5U CN202020673819U CN212216032U CN 212216032 U CN212216032 U CN 212216032U CN 202020673819 U CN202020673819 U CN 202020673819U CN 212216032 U CN212216032 U CN 212216032U
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Abstract
The utility model relates to an accurate welt spraying device suitable for COF base plate belongs to electronic circuit board technical field. Comprises a precise adhesive tape sticking machine, a stepping type spraying machine and a two-end adhesive tape stripping machine; the precise adhesive tape sticking machine is arranged at the front end of the stepping type spraying machine, the two-end adhesive tape stripping machine is arranged at the rear end of the stepping type spraying machine, and the COF substrate sequentially passes through the precise adhesive tape sticking machine, the stepping type spraying machine and the two-end adhesive tape stripping machine to finish adhesive tape sticking, photoresist spraying and adhesive tape stripping operations. The adhesive tape is firstly pasted on the PF hole of the base material according to needs, the spraying photoresist is prevented from leaking to the back of the base material, then the spraying machine is used for spraying the photoresist, the uniform deposition is carried out on the surface of the base material, the adhesive tape which is pasted previously is removed through the adhesive tape peeling machines at the two ends, the base material of the adhesive tape is removed, the edge of the photoresist is very smooth, the good appearance performance of the coating is ensured, the powerful guarantee is provided for the improvement of the production efficiency and the quality, and a large amount of cost and time are saved for enterprises.
Description
Technical Field
The utility model relates to an accurate welt spraying device suitable for COF base plate belongs to electronic circuit board technical field.
Background
With the continuous development of science and technology, electronic products are developed towards miniaturization, intellectualization, high performance and high reliability. The packaging substrate is transited from FPC to COF, the PTCH value of the COF substrate is smaller and smaller, pins for packaging are denser and more precise, and the integrated circuit packaging not only directly influences the performance of an integrated circuit, an electronic module and even a complete machine, but also restricts the miniaturization, low cost and reliability of the whole electronic system. In the whole market link with increasingly competitive development, the reduction of the production cost is a subject to be faced by COF enterprises. The line of COF base plate is made mainly by the photoresist, and the cost of photoresist is high or not little, reduces the cost of photoresist, can play the effect of instant effect to practicing thrift the cost, and good photoresist coating is the prerequisite of accurate line preparation, and the prerequisite guarantee that improves production yield is to improve the coating quality of photoetching machine.
The existing COF production is roll-to-roll, and the roller type coating is mostly adopted for coating photoresist, so that the following problems exist:
1) the roller type coating is to coat on the whole substrate surface, and due to the fluidity of the photoresist, the photoresist overflows into a nearby PF hole, and the back of a COF substrate is left along the hole wall, so that the back of the COF substrate is polluted, and after being dried, the photoresist can be wound into a reel, so that the indentation and the wrinkle of the substrate are caused, and the substrate is rejected badly.
2) In the roll-to-roll production process of COF products, a roll of COF substrate is bound to have a connection joint, and in one situation, if a roller coating unit does not avoid the COF substrate joint, the roller is seriously damaged. In another situation, if the roller coating unit avoids the COF substrate joint, the roller coating unit needs to be manually operated to retreat to avoid the joint, and the coating unit is manually reset after the joint runs past, so that the inaccuracy of the angle and the position can cause coating deviation and even cause product breakage due to uneven tension in the process of roll-to-roll transmission of the product in the manual adjustment process of the roller unit.
3) In roller type coating, the film thickness is mainly controlled by the rotating speed of a roller and the clearance of a substrate, and once the rotating speed and the spacing are not accurately controlled, the film thickness consistency of the whole roll of COF substrate after coating is difficult to ensure.
Disclosure of Invention
In order to overcome above-mentioned prior art's weak point, the utility model provides an accurate hem spraying device suitable for COF base plate, by accurate coating machine, three major parts of machine are peeled off with both ends sticky tape to step-type flush coater, accurate coating machine is with the both ends of sticky tape subsides at the COF substrate earlier, cover the PF hole, step-type flush coater is with the even spraying of photoresist on COF substrate surface that does not have the sticky tape to cover, both ends sticky tape is peeled off the machine, the PI sticky tape that will originally apply at COF substrate both ends peels off, expose the photoresist region that needs, the photoresist border is very smooth straight line.
The utility model discloses a realize through following technical scheme: the utility model provides a precision hem spraying device suitable for COF base plate which characterized in that: comprises a precise adhesive tape sticking machine, a stepping type spraying machine and a two-end adhesive tape stripping machine; the precise adhesive tape sticking machine is arranged at the front end of the stepping type spraying machine, the two-end adhesive tape stripping machine is arranged at the rear end of the stepping type spraying machine, and the COF substrate sequentially passes through the precise adhesive tape sticking machine, the stepping type spraying machine and the two-end adhesive tape stripping machine to finish adhesive tape sticking, photoresist spraying and adhesive tape stripping operations.
The precision adhesive tape sticking machine comprises a CCD (charge coupled device) alignment camera I, a pressing wheel I, an adhesive tape reel I, a transmission bearing wheel I and a bearing wheel I, wherein an adhesive tape is arranged in the adhesive tape reel I, the adhesive tape is pressed on a PF (chip on film) hole of a COF (chip on film) substrate through the pressing wheel I, the transmission bearing wheel I conveys the pressed COF substrate away and transmits the COF substrate to a stepping spraying machine through the bearing wheel I, the CCD alignment camera I is arranged at the rear end of the pressing wheel I, and the position of the adhesive tape is captured by the CCD alignment camera I in the transmission process of the COF substrate with the adhesive tape and is fed back to a;
the step-by-step spraying machine comprises a spraying machine body, a spraying unit and a positive-pressure vacuum cavity, wherein CCD (charge coupled device) alignment cameras II are arranged at two ends of the spraying machine body, the CCD alignment cameras II capture corresponding PF (positive-pressure coefficient) holes in COF (chip on film) substrates and use the PF holes as positioning spraying areas, high-pressure atomizing nozzles are arranged on the spraying unit, the spraying unit is connected with a drawing pump, the drawing pump is connected with a photoresist storage tank, photoresist enters from the photoresist storage tank and enters the spraying unit under the action of the drawing pump and is sprayed out from the high-pressure atomizing nozzles, and the photoresist is uniformly deposited on the surface of;
the two-end adhesive tape stripping machine comprises a pinch roller II, an adhesive tape reel II, a transmission bearing wheel II and a bearing wheel II, COF (chip on film) base materials pasted with adhesive tapes are transmitted from the stepping spraying machine by the bearing wheel II, the front ends of the adhesive tapes are wound on the adhesive tape reel II, and the COF base materials stripped by the transmission bearing wheel II are transmitted away.
The width of the adhesive tape is 3-10mm, the width of the adhesive tape is selected according to the size of an area needing to be coated with photoresist, the thickness of the adhesive tape is 2-10um PET adhesive tape, and the thickness of the adhesive tape is matched with the thickness of the photoresist needing to be sprayed.
The step-type spraying machine uniformly sprays the photoresist on the surface of the COF substrate which is not covered by the adhesive tape through the high-pressure atomizing nozzle, and the sprayed photoresist is quickly leveled under the action of the positive-pressure vacuum cavity.
The step-type coating machine is provided with a hot air drying mechanism, and the COF substrate is dried by the hot air drying mechanism.
The utility model has the advantages that: according to needs, the adhesive tape is pasted on the PF hole of the base material, the spraying photoresist is prevented from leaking to the back of the base material, the spraying machine is used for spraying the photoresist, the high-pressure atomizing nozzle is arranged in the nozzle, the sprayed photoresist meets the condition that air is instantly atomized, the uniform deposition is carried out on the surface of the base material, the thickness of the photoresist can be controlled through the pressure and the speed of the nozzle, and the accurate coating is realized. The adhesive tape applied previously is removed through the adhesive tape stripping machines at the two ends, the base material of the adhesive tape is removed, the edge of the photoresist is very smooth, the good appearance performance of coating is guaranteed, and powerful guarantee is provided for the improvement of production efficiency and quality. This utility model combines COF base plate production reality, has practiced thrift a large amount of costs and time for the enterprise.
Drawings
The invention will be further explained below with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a precision adhesive tape dispenser and a step-type coating machine of the present invention;
FIG. 2 is a schematic structural view of a two-end tape stripping machine of the present invention;
FIG. 3 is a schematic structural view of a spraying unit of the step-type spraying machine of the present invention;
FIG. 4 is a schematic diagram of the spraying effect of the high-pressure atomizing nozzle of the present invention;
fig. 5 is a schematic view showing the effect of the COF base material tape of the present invention after application;
fig. 6 is a schematic diagram illustrating the effect of the COF substrate coated with the photoresist according to the present invention;
fig. 7 is a schematic view showing the effect of the COF substrate of the present invention after peeling the tape.
Detailed Description
As shown in fig. 1 to 7, the precise edge-pasting spraying device suitable for COF substrates is characterized in that: comprises a precise adhesive tape sticking machine, a stepping type spraying machine and a two-end adhesive tape stripping machine; the precise adhesive tape sticking machine is arranged at the front end of the stepping type spraying machine, the two-end adhesive tape stripping machines are arranged at the rear end of the stepping type spraying machine, and the COF substrate 1 sequentially passes through the precise adhesive tape sticking machine, the stepping type spraying machine and the two-end adhesive tape stripping machines to complete the operations of adhesive tape 2 sticking, photoresist 3 spraying and adhesive tape 2 stripping.
The precise adhesive tape sticking machine comprises a CCD (charge coupled device) alignment camera I4, a pressing wheel I5, an adhesive tape reel I6, a transmission bearing wheel I7 and a bearing wheel I8, wherein an adhesive tape 2 is arranged in the adhesive tape reel I6, the adhesive tape 2 is pressed on a PF (particle Filter) hole 9 of a COF (chip on film) substrate 1 through the pressing wheel I5, the transmission bearing wheel I7 conveys the pressed COF substrate 1 away and transmits the COF substrate 1 to a stepping spraying machine through the bearing wheel I8, the CCD alignment camera I4 is arranged at the rear end of the pressing wheel I5, the CCD alignment camera I4 is an edge-walking CCD (charge coupled device), the edge of the adhesive tape 2 is consistent with the COF substrate 1, if the edge of the adhesive tape 2 is inconsistent with the COF substrate 1, the CCD alignment camera I4 can capture the adhesive tape and feed back to a front-end controller, and the controller receives a feedback signal and immediately adjusts;
the stepping type spraying machine comprises a spraying machine body 10, a spraying unit 11 and a positive pressure vacuum cavity 12, wherein CCD (charge coupled device) alignment cameras II 13 are arranged at two ends of the spraying machine body 10, the CCD alignment cameras II 13 capture corresponding PF holes 9 on a COF (chip on film) substrate 1 and use the PF holes 9 as positioning spraying areas, servo motor control is arranged at the rear ends of the CCD alignment cameras II 13, the CCD alignment cameras II 13 can move left and right to be automatically adjusted according to the positions of the PF holes 9, the captured PF holes 9 are guaranteed to be complete and accurate, so that the spraying position is guaranteed to be accurate, a high-pressure atomizing nozzle 14 is arranged on the spraying unit 11, the spraying unit 11 is connected with a drawing pump 15, the drawing pump 15 is connected with a photoresist storage tank 16, photoresist 3 enters from the photoresist storage tank 16 to the spraying unit 11 to be sprayed from the high-pressure atomizing nozzle 14 under the action of the drawing; a vacuum blowing port is arranged in the positive pressure vacuum cavity 12, and air can be uniformly blown to the COF substrate 1 from the vacuum blowing port, so that the smoothness of the surface of the photoresist dripped in the frame is ensured. The thickness of the sprayed photoresist 3 can be precisely controlled. The thickness H of the photoresist 3 = the pressure T of the actual ejection multiplied by the substrate transfer speed S.
The two-end adhesive tape stripping machine comprises a pinch roller II 17, an adhesive tape reel II 18, a transmission bearing wheel II 19 and a bearing wheel II 20, the COF substrate 1 with the adhesive tape 2 is transmitted from the stepping spraying machine by the bearing wheel II 20, the front end of the adhesive tape 2 is wound on the adhesive tape reel II 18, and the stripped COF substrate 1 is transmitted away by the transmission bearing wheel II 19.
The width of the adhesive tape 2 is 3-10mm, the width of the adhesive tape 2 is selected according to the size of the area needing to be coated with the photoresist 3, the thickness of the adhesive tape 2 is 2-10um PET adhesive tape, and the thickness of the adhesive tape 2 is matched with the thickness of the photoresist 3 needing to be sprayed.
The step-type spraying machine uniformly sprays the photoresist 3 on the surface of the COF substrate 1 which is not covered by the adhesive tape 2 through the high-pressure atomizing nozzle 14, and the sprayed photoresist 3 is quickly leveled under the action of the positive-pressure vacuum cavity 12. The photoresist 3 is sprayed out through high pressure and meets air to be instantly atomized, and finally, the photoresist is uniformly deposited on the surface of the COF substrate 1. The high pressure mist nozzle 14 is easy to replace and disassemble, and can be disassembled and cleaned when the machine stops working for a long time, so as to prevent the photoresist from solidifying and blocking the nozzle.
The step-type coating machine is provided with a hot air drying mechanism, and the COF substrate 1 is dried through the hot air drying mechanism.
In addition, the utility model discloses a use method does: firstly, an adhesive tape reel I6 is replaced with an adhesive tape 2, the adhesive tape 2 is pressed on a COF substrate 1 through a heating and pressurizing press wheel I5, a transmission bearing wheel I7 conveys the pressed COF substrate 1 away, the COF substrate 1 is transmitted to a stepping spraying machine through a bearing wheel I8, and the position of the adhesive tape 2 is captured by a CCD (charge coupled device) contraposition camera I4 and fed back to a front-end controller in the transmission process of the COF substrate 1 with the adhesive tape 2;
CCD contraposition cameras II 13 at two ends of the stepping spraying machine capture corresponding PF holes 9 on the COF substrate 1 and use the PF holes 9 as a positioning spraying area, after contraposition is completed, a spraying machine body 10 moves to an initial position, a spraying unit 11 sprays photoresist 3, the sprayed photoresist 3 is in an atomized droplet shape and is uniformly deposited on the surface of the COF substrate 1, the photoresist 3 cannot be quickly leveled in a frame body after spraying due to certain viscosity, a vacuum blowing port is formed in a positive pressure vacuum cavity 12, and the photoresist 3 which is dripped in the frame body can be uniformly blown to the COF substrate 1 from the vacuum blowing port, so that the surface smoothness of the photoresist 3 in the frame body is ensured;
and finally, the COF substrate 1 with the adhesive tape 2 is conveyed from the stepping spraying machine by a bearing wheel II 20, the front end of the adhesive tape 2 is wound on an adhesive tape reel II 18, the adhesive tape reel II 18 peels off the adhesive tape 2, and the peeled COF substrate 1 is conveyed away by a conveying bearing wheel II 19.
Claims (5)
1. The utility model provides a precision hem spraying device suitable for COF base plate which characterized in that: comprises a precise adhesive tape sticking machine, a stepping type spraying machine and a two-end adhesive tape stripping machine; the precise adhesive tape sticking machine is arranged at the front end of the stepping type spraying machine, the two-end adhesive tape stripping machines are arranged at the rear end of the stepping type spraying machine, and the COF substrate (1) sequentially passes through the precise adhesive tape sticking machine, the stepping type spraying machine and the two-end adhesive tape stripping machines to finish the operations of adhesive tape (2) sticking, photoresist (3) spraying and adhesive tape (2) stripping.
2. The precise edge-pasting spraying device suitable for the COF substrate as claimed in claim 1, wherein: the precision adhesive tape sticking machine comprises a CCD (charge coupled device) alignment camera I (4), a pressing wheel I (5), an adhesive tape reel I (6), a transmission bearing wheel I (7) and a bearing wheel I (8), an adhesive tape (2) is arranged in the adhesive tape reel I (6), the adhesive tape (2) is pressed on a PF (9) of a COF (chip on film) substrate (1) through the pressing wheel I (5), the transmission bearing wheel I (7) conveys the pressed COF substrate (1) away and transmits the COF substrate to a stepping spraying machine through the bearing wheel I (8), the CCD alignment camera I (4) is arranged at the rear end of the pressing wheel I (5), and the COF substrate (1) with the adhesive tape (2) is captured by the CCD alignment camera I (4) in the transmission process and fed back to a front end controller;
the stepping type coating machine comprises a coating machine body (10), a coating unit (11) and a positive pressure vacuum cavity (12), CCD (charge coupled device) alignment cameras II (13) are arranged at two ends of the coating machine body (10), the CCD alignment cameras II (13) capture corresponding PF holes (9) on a COF (chip on film) substrate (1) and use the PF holes (9) as positioning coating areas, a high-pressure atomizing nozzle (14) is arranged on the coating unit (11), the coating unit (11) is connected with a drawing pump (15), the drawing pump (15) is connected with a photoresist storage tank (16), photoresist (3) enters the coating unit (11) from the photoresist storage tank (16) under the action of the drawing pump (15) and is ejected from the high-pressure atomizing nozzle (14), and the photoresist is uniformly deposited on the surface of the COF substrate (1);
the two-end adhesive tape stripping machine comprises a pinch roller II (17), an adhesive tape reel II (18), a transmission bearing wheel II (19) and a bearing wheel II (20), the COF base material (1) pasted with the adhesive tape (2) is transmitted from the stepping spraying machine by the bearing wheel II (20), the front end of the adhesive tape (2) is wound on the adhesive tape reel II (18), and the stripped COF base material (1) is conveyed away by the transmission bearing wheel II (19).
3. The precise edge-pasting spraying device suitable for the COF substrate as claimed in claim 1, wherein: the width of the adhesive tape (2) is 3-10mm, the width of the adhesive tape (2) is selected according to the size of an area coated with the photoresist (3) as required, the thickness of the adhesive tape (2) is 2-10um PET adhesive tape, and the thickness of the adhesive tape (2) is matched with the thickness of the photoresist (3) to be sprayed.
4. The precise edge-pasting spraying device suitable for the COF substrate as claimed in claim 1, wherein: the step-type spraying machine uniformly sprays the photoresist (3) on the surface of the COF substrate (1) which is not covered by the adhesive tape (2) through the high-pressure atomizing nozzle (14), and the sprayed photoresist (3) is quickly leveled under the action of the positive-pressure vacuum cavity (12).
5. The precise edge-pasting spraying device suitable for the COF substrate as claimed in claim 1, wherein: the step-type coating machine is provided with a hot air drying mechanism, and the COF substrate (1) is dried through the hot air drying mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020673819.5U CN212216032U (en) | 2020-04-28 | 2020-04-28 | Precision welting spraying device suitable for COF substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020673819.5U CN212216032U (en) | 2020-04-28 | 2020-04-28 | Precision welting spraying device suitable for COF substrate |
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| Publication Number | Publication Date |
|---|---|
| CN212216032U true CN212216032U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020673819.5U Active CN212216032U (en) | 2020-04-28 | 2020-04-28 | Precision welting spraying device suitable for COF substrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375514A (en) * | 2020-04-28 | 2020-07-07 | 江苏上达电子有限公司 | Precise edge-pasting spraying device suitable for COF substrate and using method thereof |
| CN115501999A (en) * | 2022-09-23 | 2022-12-23 | 苏州瀚川智能科技股份有限公司 | Full-automatic spraying assembly line for double-sided spraying |
-
2020
- 2020-04-28 CN CN202020673819.5U patent/CN212216032U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375514A (en) * | 2020-04-28 | 2020-07-07 | 江苏上达电子有限公司 | Precise edge-pasting spraying device suitable for COF substrate and using method thereof |
| CN115501999A (en) * | 2022-09-23 | 2022-12-23 | 苏州瀚川智能科技股份有限公司 | Full-automatic spraying assembly line for double-sided spraying |
| CN115501999B (en) * | 2022-09-23 | 2024-06-21 | 苏州瀚川智能科技股份有限公司 | Full-automatic spraying assembly line for double-sided spraying |
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Address after: 221000 north of Liaohe Road and west of Huashan Road, Pizhou Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Jiangsu SHANGDA Semiconductor Co.,Ltd. Address before: 221300 north of Liaohe Road and west of Huashan Road, Pizhou Economic Development Zone, Xuzhou City, Jiangsu Province Patentee before: Jiangsu Shangda Electronics Co.,Ltd. |