阅读说明：本技术 一种延长微电子封装芯片粘接胶车间寿命的装置和方法 (Device and method for prolonging service life of bonding adhesive workshop of microelectronic packaging chip ) 是由 付桂花 马洪毅 于 2019-09-20 设计创作，主要内容包括：本发明公开了一种延长微电子封装芯片粘接胶车间寿命的装置和方法,包括盛胶容器、固定座和盖罩,所述盛胶容器内设置有胶槽,盛胶容器通过转轴和转动轮连接有转动驱动装置；所述固定座通过安装孔固定设置于固晶机上,通过连接孔和轴承与转轴连接,所述固定座一侧设置有刮刀；所述盛胶容器上设置有盖罩,所述盖罩顶部通过安装平台与固定座安装连接,所述盖罩上设置有加胶孔、刮刀让位孔和取胶让位孔,盖罩一侧设置有氮气引入气嘴,所述氮气引入气嘴连接有氮气管和流量调节阀。本装置结构简单,操作方法简便,有效延长了粘接胶的车间使用寿命。(The invention discloses a device and a method for prolonging the service life of a bonding glue workshop of a microelectronic packaging chip, which comprises a glue container, a fixed seat and a cover, wherein a glue groove is arranged in the glue container; the fixed seat is fixedly arranged on the die bonder through the mounting hole and is connected with the rotating shaft through the connecting hole and the bearing, and one side of the fixed seat is provided with a scraper; be provided with the housing on the flourishing glue container, mounting platform and fixing base erection joint are passed through to the housing top, be provided with on the housing and add gluey hole, scraper hole of stepping down and get gluey hole of stepping down, housing one side is provided with nitrogen gas and introduces the air cock, nitrogen gas is introduced the air cock and is connected with nitrogen gas pipe and flow control valve. The device has simple structure and simple and convenient operation method, and effectively prolongs the service life of a workshop for bonding glue.)

1. A device for prolonging the service life of a bonding glue workshop of a microelectronic packaging chip is characterized by comprising a glue container, a fixed seat and a cover, wherein a protruding edge and a connecting pile are fixedly arranged on the upper surface of the glue container;

The fixed seat comprises a fixed block and a connecting block, the fixed block is fixedly arranged on the die bonder through a mounting hole arranged on the fixed block, a connecting hole and a cover mounting hole are arranged on the connecting block, a rotating shaft penetrates through the connecting hole, the connecting hole is connected with the rotating shaft through a bearing, and a scraper is arranged on one side of the connecting block;

the glue container is provided with a cover, the bottom of the cover is provided with a convex edge, the top of the cover is provided with an installation platform, the installation platform is provided with a rotating shaft hole and a cover installation abdicating hole, the rotating shaft hole is arranged in the center of the installation platform, and the cover installation abdicating hole is matched with the cover installation hole; the cover is provided with a glue adding hole, a scraper abdicating hole and a glue taking abdicating hole, the scraper is arranged in the scraper abdicating hole, and the glue taking abdicating hole is arranged above the glue groove; and a nitrogen introducing air tap is arranged on one side of the cover and connected with a nitrogen pipe, and a flow regulating valve is arranged on the nitrogen pipe.

2. The apparatus of claim 1, wherein said rotational drive means is a rotary motor.

3. the apparatus as claimed in claim 1, wherein the bottom of the scraper is located in the glue groove, and a side of the bottom of the scraper is provided with a concave semicircular groove.

4. The apparatus as claimed in claim 3, wherein the top of the recessed semicircular groove is further provided with a stop.

5. The apparatus of claim 1, wherein said lid is made of a transparent material.

6. The apparatus as claimed in claim 1, wherein the nitrogen inlet nozzle sprays air flow in a horizontal direction, and the outlet of the nitrogen inlet nozzle is provided with a plurality of nozzles having a trumpet-shaped opening.

7. a method for prolonging the service life of a bonding adhesive workshop of a microelectronic packaging chip is characterized by comprising the following steps:

1) The convex edge at the bottom of the control cover is matched with the height of the convex edge of the glue container, the cover and the glue container are assembled, the glue container is connected with the rotating wheel through a rotating shaft and a bearing, and the cover is fixed on the fixed seat through the mounting abdicating hole and the cover mounting abdicating hole by screws;

2) Extruding the bonding glue into a glue groove from a glue adding hole, driving a rotating wheel to rotate by an external force of a glue container, and scraping the bonding glue in the glue groove by a scraper;

3) Introducing nitrogen with the purity of more than 99% from the opening of the cover, so that the air and the moisture on the surface of the adhesive glue are filled with the nitrogen; the nitrogen pressure on the surface of the adhesive is made to be larger than the air pressure by accurately controlling the nitrogen flow at 0.05-0.2L/min;

4) When the adhesive is used, the external adhesive dispensing needle dips the adhesive from the adhesive taking abdicating hole for dispensing.

8. The method of claim 7, wherein the nitrogen pressure at the surface of the adhesive is 0.1-0.12 Mpa.

Technical Field

The invention discloses a device and a method for prolonging the service life of a bonding adhesive workshop of a microelectronic packaging chip, and belongs to the technical field of microelectronic chip packaging.

Background

All can use the chip bonding glue in the microelectronic package, the bonding glue has electrically conductive silver thick liquid, insulating bonding glue etc. for on being fixed to the lead frame with the chip bonding, because the bonding glue is liquid fluid form, its operation process is mostly through mechanical structure's the glue that dips in, dips in the bonding glue through the point needle promptly, and the chip of putting on the lead frame of putting is put admittedly again. The main components of the adhesive glue comprise resin, a curing agent, a catalyst, an accelerant, an antioxidant and the like, and the adhesive glue surface can generate performance decay under the action of moisture, oxygen and other pollution components in the air in a naked workshop environment, so that the service time is short. Therefore, the adhesive has a corresponding workshop life limit, which is generally 12 hours and not more than 24 hours at most. And frequent change bonding glue, need wash flourishing mucilage binding and put and need half an hour at least, can seriously influence production efficiency, simultaneously because flourishing mucilage binding of putting needs certain primer, account for about 50% of glue total amount of use, cause the low utilization ratio of glue, waste seriously.

disclosure of Invention

in order to overcome the defects of the prior art, the invention provides a device and a method for prolonging the service life of a bonding adhesive workshop of a microelectronic packaging chip.

The invention is realized by the following technical scheme:

A device for prolonging the service life of a bonding glue workshop of a microelectronic packaging chip comprises a glue container, a fixed seat and a cover, wherein a protruding edge and a connecting pile are fixedly arranged on the upper surface of the glue container, a glue groove is formed between the connecting pile and the protruding edge, bonding glue is contained in the glue groove, a rotating shaft is fixedly arranged on the connecting pile, a rotating wheel is arranged at the top of the rotating shaft, and the rotating wheel is connected with a rotation driving device;

The fixed seat comprises a fixed block and a connecting block, the fixed block is fixedly arranged on the die bonder through a mounting hole arranged on the fixed block, a connecting hole and a cover mounting hole are arranged on the connecting block, a rotating shaft penetrates through the connecting hole, the connecting hole is connected with the rotating shaft through a bearing, and a scraper is arranged on one side of the connecting block;

The glue container is provided with a cover, the bottom of the cover is provided with a convex edge, the top of the cover is provided with an installation platform, the installation platform is provided with a rotating shaft hole and a cover installation abdicating hole, the rotating shaft hole is arranged in the center of the installation platform, and the cover installation abdicating hole is matched with the cover installation hole; the cover is provided with a glue adding hole, a scraper abdicating hole and a glue taking abdicating hole, the scraper is arranged in the scraper abdicating hole, and the glue taking abdicating hole is arranged above the glue groove; and a nitrogen introducing air tap is arranged on one side of the cover and connected with a nitrogen pipe, and a flow regulating valve is arranged on the nitrogen pipe.

Preferably, the rotation driving device is a rotation motor.

preferably, the bottom of the scraper is positioned in the glue groove, and one side of the bottom of the scraper is provided with an inwards concave semicircular groove.

Preferably, the top of the inner concave semicircular groove is also provided with a baffle plate.

preferably, the cover is made of transparent materials. The cover is made of glass and PC.

Preferably, the nitrogen gas introducing nozzle sprays airflow towards the horizontal direction, a plurality of nozzles are arranged at the outlet of the nitrogen gas introducing nozzle, and the opening of each nozzle is in a horn shape.

a method for prolonging the service life of a bonding adhesive workshop of a microelectronic packaging chip comprises the following steps:

1) The convex edge at the bottom of the control cover is matched with the height of the convex edge of the glue container, the cover and the glue container are assembled, the glue container is connected with the rotating wheel through a rotating shaft and a bearing, and the cover is fixed on the fixed seat through the mounting abdicating hole and the cover mounting abdicating hole by screws;

2) extruding the bonding glue into a glue groove from a glue adding hole, driving a rotating wheel to rotate by an external force of a glue container, and scraping the bonding glue in the glue groove by a scraper;

3) introducing nitrogen with the purity of more than 99% from the opening of the cover, so that the air and the moisture on the surface of the adhesive glue are filled with the nitrogen; the nitrogen pressure on the surface of the adhesive is made to be larger than the air pressure by accurately controlling the nitrogen flow at 0.05-0.2L/min;

4) When the adhesive is used, the external adhesive dispensing needle dips the adhesive from the adhesive taking abdicating hole for dispensing.

Preferably, the nitrogen pressure on the surface of the bonding glue is 0.1-0.12 Mpa.

Compared with the prior art, the invention has the following beneficial effects:

the method comprises the steps of arranging a cover on the exposed part of a container containing bonding glue, introducing nitrogen with the purity of more than 99% from an opening on the cover, and filling nitrogen on the surface of the bonding glue and moisture by nitrogen, wherein the nitrogen flow is accurately controlled to be 0.05-0.2L/min, so that the nitrogen pressure on the surface of the bonding glue is greater than the air pressure; controlling the convex edge at the bottom of the cover to be matched with the height of the convex edge of the glue container, so that the bottom of the convex edge is immersed in the bonding glue in the glue groove; when the adhesive is used, the external adhesive dispensing needle dips the adhesive from the adhesive taking abdicating hole for dispensing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a fixing base of the present invention;

FIG. 3 is a schematic view of the cover structure of the present invention;

FIG. 4 is a schematic view of the structure of the nitrogen inlet nozzle of the present invention.

in the figure, a glue container 01, a convex edge 01-1, a connecting pile 01-2, a glue groove 01-3, a scraper 02, an inward concave semicircular groove 02-1, a baffle plate 02-2, a fixed seat 03, a fixed block 03-1, a connecting block 03-2, a mounting hole 03-3, a connecting hole 03-4, a cover mounting hole 03-5, a bearing 04, a rotating shaft 05, a rotating wheel 06, a cover 11, a rotating shaft hole 11-1, a scraper abdicating hole 11-2, a glue adding hole 11-3, a nitrogen introducing air nozzle 11-4, a cover mounting abdicating hole 11-5, a glue taking abdicating hole 11-6, a convex edge 11-7, a mounting platform 11-8, a nozzle 11-9, a flow regulating valve 12, a nitrogen pipe 13 and a glue dispensing needle 14.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited to these examples, and all changes or equivalent substitutions that do not depart from the spirit of the present invention are intended to be included within the scope of the present invention.

A device for prolonging the service life of a bonding glue workshop of a microelectronic packaging chip comprises a glue container 01, a fixed seat 03 and a cover 11, wherein a convex edge 01-1 and a connecting pile 01-2 are fixedly arranged on the upper surface of the glue container 01, a glue groove 01-3 is formed between the connecting pile and the convex edge, bonding glue is contained in the glue groove, a rotating shaft 05 is fixedly arranged on the connecting pile, a rotating wheel 06 is arranged at the top of the rotating shaft 05, and the rotating wheel is connected with a rotation driving device; the rotation driving device is a rotation motor.

the fixed seat 03 comprises a fixed block 03-1 and a connecting block 03-2, the fixed block 03-1 is fixedly arranged on the die bonder through a mounting hole 03-3 arranged on the fixed block 03-1, a connecting hole 03-4 and a cover mounting hole 03-5 are arranged on the connecting block 03-2, a rotating shaft 05 penetrates through the connecting hole 03-4, the connecting hole is connected with the rotating shaft through a bearing 04, and a scraper 02 is arranged on one side of the connecting block 03-2; the bottom of the scraper 02 is positioned in the glue groove 01-3, and one side of the bottom of the scraper 02 is provided with an inwards concave semicircular groove 02-1; the top of the inner concave semicircular groove is also provided with a baffle plate 02-2.

Be provided with housing 11 on the flourishing glue container, the housing adopts transparent material, and the shape is the spill thin shell structure of back-off, and thickness 0.3mm-3mm, the housing material includes glass, PC.

The bottom of the cover is provided with a convex edge 11-7, the top of the cover is provided with an installation platform 11-8, the installation platform is provided with a rotating shaft hole 11-1 and a cover installation abdicating hole 11-5, the rotating shaft hole 11-1 is arranged in the center of the installation platform, and the cover installation abdicating hole 11-5 is matched with the cover installation hole 03-5; the cover is provided with a glue adding hole 11-3, a scraper abdicating hole 11-2 and a glue taking abdicating hole 11-6, the scraper is arranged in the scraper abdicating hole 11-2, and the glue taking abdicating hole 11-6 is arranged above the glue groove; the glue dispensing needle 14 descends from the glue taking abdicating hole 11-6 of the cover 11 to the glue groove 01-3 of the glue container 01 to dip the chip bonding glue, and then runs to the outside to be dispensed and placed at the chip mounting position.

One side of the cover is provided with a nitrogen gas introducing air tap 11-4, the nitrogen gas introducing air tap 11-4 is connected with a nitrogen gas pipe 13, and the nitrogen gas pipe is provided with a flow regulating valve 12.

The nitrogen gas introducing air faucet 11-4 sprays airflow towards the horizontal direction, a plurality of nozzles 11-9 are arranged at the outlet of the nitrogen gas introducing air faucet, and the opening of each nozzle is horn-shaped.

because the microelectronic packaging chip bonding glue is contained in the glue container, the glue surface can be exposed in the air, the scheme is that the cover is added on the exposed part of the glue container, and nitrogen with the purity of more than 99% is introduced from the opening at the proper position of the cover, and the performance decay speed of the bonding glue can be reduced because the nitrogen belongs to inert and neutral gas. By accurately controlling the flow rate of nitrogen gas to be 0.05-0.2L/min, the nitrogen gas pressure on the surface of the bonding glue is kept slightly higher than the air pressure, and the air and the moisture on the surface of the bonding glue are filled with the nitrogen gas to isolate oxygen, moisture, pollutants and the like. The nitrogen pressure on the surface of the chip cannot be too high, otherwise, trace components such as a catalyst, a curing agent, an antioxidant and the like on the surface of the adhesive can be taken away, and the effect of prolonging the service life of a workshop cannot be achieved. The clearance between the cover and the glue container is as small as possible, the smaller the clearance is, the less nitrogen is wasted, and the flow can be adjusted to be smaller. Meanwhile, the cover is made of transparent materials such as glass and PC, the thickness of the cover is 0.3mm-3mm, and the cover is arranged to be concave, so that the adhesive amount of the adhesive container can be observed conveniently.