CN215008258U

CN215008258U - Film turning device and packaging system

Info

Publication number: CN215008258U
Application number: CN202120881113.2U
Authority: CN
Inventors: 吴学坚; 程寅山; 徐钊; 郑世鹏; 郑朝曦
Original assignee: Shenzhen Youming Photoelectric Co ltd
Current assignee: Shenzhen Youming Photoelectric Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-03
Anticipated expiration: 2031-04-26

Abstract

The utility model belongs to the technical field of the LED encapsulation, especially, relate to a turn over membrane device and packaging system. The membrane overturning device comprises a supporting structure and an overturning structure. The supporting structure comprises a heater and a base with a placement cavity, a bearing surface is arranged on the outer surface of the base, a heating area is arranged on the bearing surface, a first membrane is flatly laid on the bearing surface, a target is located in the heating area, and the heater is located in the placement cavity and radiates heat towards the heating area. The turnover structure comprises a film pressing plate and a roller wheel made of flexible materials, the film pressing plate is provided with turnover holes, the film pressing plate compresses a first diaphragm towards the bearing surface, the target object is positioned in the turnover holes, a second diaphragm is tiled and arranged on the film pressing plate and covers the turnover holes, the position of the second diaphragm corresponding to the turnover holes is provided with a bonding area for bonding the target object, and the roller wheel rolls along the bearing surface in a reciprocating manner and rolls the target object. The utility model discloses at the upset in-process of wafer, can not produce the bubble between the rete, and simple structure, it is with low costs.

Description

Film turning device and packaging system

Technical Field

The utility model belongs to the technical field of the LED encapsulation, especially, relate to a turn over membrane device and packaging system.

Background

With the development of the LED (Light-Emitting Diode) packaging industry, the LED packaging industry gradually extends to various sub-industries, such as plant lighting, animal lighting, and the like. The quality requirements of different fields on the LED light source are different, and especially for the application in severe environments, new requirements are provided for the reliability of the LED lamp beads. However, since the LED chip is mainly a normal chip, the chip has the advantages of high brightness and the disadvantages of electrical interconnection by soldering with wires having a small diameter (such as 23 microns, 25 microns, etc.). The quality risk that this kind of LED lamp pearl was used and is aroused in some environments that the temperature is high, the difference in temperature is great, humidity is great is high, has consequently developed a flip chip on the market and has been applied to this kind of place. The structure of the chip is that an electrode is arranged at the bottom of the chip, and metal tin is implanted on the electrode, which is called as a tin ball implantation in the industry.

In order to facilitate the sorting and transportation of the wafer, when an upstream supplier supplies the wafer to an LED lamp bead packaging factory, the incoming material is tightly attached to one surface of the LED wafer through a blue film. When the LED wafer is used in an LED packaging factory, the LED wafer can not directly expand the blue film for use, but the wafer is firstly turned over by 180 degrees from top to bottom, and then the wafer can be sucked by a suction nozzle of a die bonder in the LED die bonding process and transferred and bound.

Therefore, when the above type of wafer is packaged, the film turning transfer is required, and the film turning machine in the market mainly transfers the wafer from one film to another film in a manner of lifting and pressing the wafer up and down by using an air cylinder, the manufacturing cost of the film turning machine is too high, and bubbles exist between the film layers during the film turning, which causes the failure of the crystal turning or the low turning rate.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a film turning device, which aims to solve the problem of how to reduce the cost of the film turning device and avoid bubbles in the film turning process.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the film turning device is used for turning a target object on a first film sheet to a second film sheet and comprises:

the supporting structure comprises a heater and a base with a placement cavity, a bearing surface is arranged on the outer surface of the base, a heating area is arranged on the bearing surface, the first membrane is flatly laid on the bearing surface, the target is located in the heating area, the heater is located in the placement cavity and radiates heat towards the heating area so as to heat the first membrane and the target; and

upset structure, including the pressure membrane board and the running roller of making by flexible material, the upset hole has been seted up to the pressure membrane board, the pressure membrane board court the loading end compresses tightly first diaphragm, just the target level in the upset is downthehole, the second diaphragm tiling set up in just cover on the pressure membrane board the upset hole, the second diaphragm corresponds the position in upset hole is equipped with and is used for bonding the bonding region of target, the running roller is followed the reciprocal roll of loading end rolls the target, with the target upset with bond extremely the second diaphragm.

In one embodiment, the turnover structure further includes a spacer made of a flexible material, a through hole is formed in a position of the spacer corresponding to the turnover hole, and the spacer is located between the first membrane and the second membrane.

In one embodiment, the turnover structure further comprises a rotating shaft, the roller is provided with a rotating hole, and the rotating shaft penetrates through the rotating hole.

In one embodiment, the flip structure further includes an elastic member having an elastic restoring force, one end of the elastic member is fixedly disposed, and the other end of the elastic member is connected to the rotating shaft and presses the rotating shaft toward the bearing surface under the action of the elastic restoring force, the number of the elastic member is two, and the two elastic other ends are respectively connected to two ends of the rotating shaft.

In one embodiment, the resilient member is a tube spring.

In one embodiment, the turnover structure further comprises a portal frame arranged along the bearing surface in a sliding manner, the portal frame is provided with a rotating groove, and one end of the elastic member is connected with the bottom of the rotating groove.

In one embodiment, the portal frame comprises a cross beam which is arranged in a suspended manner relative to the bearing surface and two upright columns which are arranged in a sliding manner along the bearing surface, two of the upright columns are arranged at intervals, two ends of the cross beam are respectively connected with the two upright columns, and the rotating groove is formed in the cross beam.

In one embodiment, the turnover structure further comprises two guide rails arranged on the bearing surface, and the two guide rails are arranged at intervals and used for guiding two ends of the portal frame to slide respectively.

In one embodiment, the membrane turning device further comprises a temperature controller arranged at one end of the base and used for controlling the heater.

It is also an object of the present application to provide a packaging system comprising a film flipping device as described above.

The beneficial effect of this application lies in: through heating second diaphragm and target, reuse the press mold and compress tightly first diaphragm to keep apart first diaphragm and second diaphragm, reuse the running roller and roll repeatedly and lie in the target between first diaphragm and the second diaphragm, finally make the target by upset to the second diaphragm, and because rolling repeatedly of running roller, make the bubble can not appear between first diaphragm and the second diaphragm, simple structure moreover, it is with low costs.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a film turning device provided in an embodiment of the present application;

fig. 2 is a partially enlarged view of the membrane inverting device of fig. 1 at a.

Wherein, in the figures, the respective reference numerals:

100. a film turning device;

10. a support structure;

11. a base;

12. a temperature controller;

112. a bearing surface;

111. a heating zone;

20. a turning structure;

21. a film pressing plate;

22. a roller;

211. turning over the hole;

30. a guide rail;

23. a gantry;

231. a column;

232. a cross beam;

233. a handle;

24. a rotating shaft;

2321. a rotating groove;

25. an elastic member;

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a film flipping device 100 for flipping an object located on a first film to a second film. Optionally, in this embodiment, the target is adhered to the first membrane, and the target is adhered to the second membrane by the membrane flipping device 100. Optionally, the first membrane and the second membrane are both arranged in a sheet. In this embodiment, the first film is a blue film, the target is a wafer, and the second film is a UV film. Optionally, the wafer is an LED wafer. The membrane flipping device 100 comprises a support structure 10 and a flipping structure 20. The supporting structure 10 includes a heater and a base 11 having a mounting cavity, wherein a bearing surface 112 is disposed on an outer surface of the base 11, and a heating region 111 is disposed on the bearing surface 112. Optionally, the bearing surface 112 is horizontally disposed. The first film is laid on the carrying surface 112 and the target is located in the heating area 111, and the heater is located in the placing cavity and radiates heat towards the heating area 111 to heat the first film and the target, so that the adhesive force between the first film and the target is reduced. Alternatively, the heater may be a resistive heating block. By connecting the resistance heating block to a power source, the resistance heating block radiates heat to the heating region 111. The turning structure 20 includes a lamination plate 21 and a roller 22 made of a flexible material, and the roller 22 has a predetermined softness so that the roller 22 can avoid damaging the target object when rolling the target object. The film pressing plate 21 is provided with a turning hole 211, the film pressing plate 21 compresses the first membrane towards the bearing surface 112, the position of the first membrane in the film turning process is prevented from being deviated, and the film pressing plate 21 is also used for isolating the first membrane and the second membrane and placing the first membrane and the second membrane in direct contact. And the target object is located in the turning hole 211, the second membrane is flatly laid on the film pressing plate 21 and covers the turning hole 211, and a bonding area for bonding the target object is arranged at the position of the second membrane corresponding to the turning hole 211. The roller 22 rolls back and forth along the bearing surface 112 and rolls the object to turn and bond the object to the second film sheet. It is understood that the bonding region is provided with an adhesive agent so that the object is bonded to the second film sheet under the rolling of the roller 22, and it is understood that the adhesive force between the second film sheet and the object is greater than the adhesive force between the first film sheet and the object, so that the object is separated from the first film sheet and is bonded to the second film sheet after the second film sheet is separated from the lamination plate 21.

Referring to fig. 1 and 2, by heating the second membrane and the target, compressing the first membrane with the squeeze film plate 21, isolating the first membrane from the second membrane, and repeatedly rolling the target between the first membrane and the second membrane with the roller 22, the target is finally turned over to the second membrane, and due to the repeated rolling of the roller 22, no air bubbles are generated between the first membrane and the second membrane, and the structure is simple and the cost is low.

Optionally, solder balls on the die are bonded to bonding areas on the second membrane. The blue film, which was originally loaded with the wafer, was then separated so that the wafer was transferred to the UV film with the electrode of the wafer facing down, in preparation for the next process.

In one embodiment, the flipping structure 20 further includes a pad made of a flexible material, the pad has a through hole corresponding to the flipping hole 211, and the pad is located between the first membrane and the second membrane. Optionally, in this embodiment, the gasket is a release paper, and is bonded to the second membrane film through the release paper, and the release paper is provided with a through hole, and the bonding region on the second membrane is exposed through the through hole, so that the target object can directly contact the bonding region. The film pressing plate 21 can be prevented from being bonded by the second membrane through the release paper, and the separation of the second membrane and the film pressing plate 21 is facilitated.

Referring to fig. 1 and 2, in an embodiment, the flipping structure 20 further includes a rotating shaft 24, the roller 22 is provided with a rotating hole, and the rotating shaft 24 penetrates through the rotating hole. The roller 22 rolls along the bearing surface 112 by rotating the shaft 24, thereby facilitating rolling of the object. It will be appreciated that the roller 22 applies a suitable crushing force to the object to avoid damage to the object.

In one embodiment, the turnover structure 20 further includes an elastic member 25 having an elastic restoring force, one end of the elastic member 25 is fixedly disposed, and the other end of the elastic member 25 is connected to the rotating shaft 24 and presses the rotating shaft 24 toward the bearing surface 112 under the elastic restoring force, and two elastic members 25 are disposed, and two elastic ends are respectively connected to two ends of the rotating shaft 24. By providing a suitable elastic member 25, the roller 22 can have a suitable rolling force against the object. Wherein, the elastic member 25 with different elastic restoring force can be replaced according to different objects, so that the objects can be smoothly adhered to the second membrane.

In one embodiment, the resilient member 25 is a tube spring.

Referring to fig. 1 and fig. 2, in an embodiment, the turnover structure 20 further includes a gantry 23 slidably disposed along the bearing surface 112, the gantry 23 is provided with a rotating groove 2321, and one end of the elastic element 25 is connected to a bottom of the rotating groove 2321. Optionally, a handle 233 is further disposed on the gantry 23, and the gantry 23 is driven to slide back and forth along the bearing surface 112 by operating the handle 233, so that the roller 22 performs back and forth rolling on the target. By forming the rotating slot 2321, the roller 22 is partially accommodated in the rotating slot 2321, which is beneficial to the compactness of the film turning device 100.

Referring to fig. 1 and fig. 2, in an embodiment, the gantry 23 includes a beam 232 suspended in the air relative to the bearing surface 112 and two columns 231 slidably disposed along the bearing surface 112, two columns 231 are disposed at intervals, two ends of the beam 232 are respectively connected to the two columns 231, and the rotating slot 2321 is disposed on the beam 232. Optionally, the two upright posts 231 are vertically arranged opposite to the bearing surface 112, and then the two upright posts 231 drive the cross beam 232 to slide back and forth, so that the roller 22 performs back and forth rolling on the target object.

Referring to fig. 1 and fig. 2, in an embodiment, the turnover structure 20 further includes two guide rails 30 disposed on the carrying surface 112, and the two guide rails 30 are disposed at intervals, and the two guide rails 30 are respectively used for guiding two ends of the gantry 23 to slide. Alternatively, the roller 22 can be smoothly slid by the two guide rails 30, thereby uniformly applying force to the object.

In one embodiment, the membrane turnover device 100 further includes a thermostat 12 disposed at one end of the base 11 and used for controlling the heater. The operation of the heater is controlled by thermostat 12. Alternatively, the heating zone 111 may be heated by a thermostat 12, which heats the heating zone in the positioning chamber. Wherein, the temperature range of the heating zone 111 is: the real-time ambient temperature is any temperature between 80 ℃, and accurate temperature setting is performed according to the material and process requirements, and meanwhile, the heating zone 111 can realize the constant temperature maintaining function from the ambient temperature to any temperature of 80 ℃.

Referring to fig. 1 and fig. 2, the present invention further provides an encapsulation system, which includes a film turning device 100, and the specific structure of the film turning device 100 refers to the above embodiments, and since the encapsulation system adopts all the technical solutions of all the above embodiments, the encapsulation system also has all the beneficial effects brought by the technical solutions of the above embodiments, and the details are not repeated herein.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A membrane overturning device for overturning a target object on a first membrane to a second membrane, which is characterized by comprising:

2. The film turning device according to claim 1, wherein: the turnover structure further comprises a gasket made of flexible materials, through holes are formed in the positions, corresponding to the turnover holes, of the gasket, and the gasket is located between the first diaphragm and the second diaphragm.

3. The film turning device according to claim 1, wherein: the overturning structure further comprises a rotating shaft, the roller is provided with a rotating hole, and the rotating hole is penetrated by the rotating shaft.

4. The film turning device according to claim 3, wherein: the turnover structure further comprises an elastic piece with elastic restoring force, one end of the elastic piece is fixedly arranged, the other end of the elastic piece is connected with the rotating shaft and presses the rotating shaft towards the bearing surface under the action of the elastic restoring force, the elastic piece is provided with two elastic pieces, and the other end of each elastic piece is connected with two ends of the rotating shaft respectively.

5. The film turning device according to claim 4, wherein: the elastic member is a tube spring.

6. The film turning device according to claim 4, wherein: the turnover structure further comprises a portal frame arranged along the bearing surface in a sliding mode, a rotating groove is formed in the portal frame, and one end of the elastic piece is connected with the bottom of the rotating groove.

7. The film turning device according to claim 6, wherein: the portal frame comprises a beam and two stand columns, wherein the beam is opposite to the hanging bearing surface, the stand columns are arranged on the bearing surface in a sliding mode, the stand columns are arranged at intervals, two ends of the beam are connected with the two stand columns respectively, and the rotating groove is formed in the beam.

8. The film turning device according to claim 6, wherein: the turnover structure further comprises two guide rails arranged on the bearing surface, and the two guide rails are arranged at intervals and are used for guiding the two ends of the portal frame to slide respectively.

9. The membrane overturning device according to any one of claims 1 to 8, wherein: the membrane turning device also comprises a temperature controller which is arranged at one end of the base and is used for controlling the heater.

10. A packaging system comprising a film flipping device according to any one of claims 1 to 9.