Method for automatically clamping and controlling silver colloid defoaming procedure in semiconductor packaging

Abstract

The invention discloses a method for automatically controlling an elargol defoaming program in semiconductor packaging, the method is applied to an elargol defoaming system, the elargol defoaming system comprises an MES system and at least one defoaming machine, the MES system and the defoaming machine are interconnected through a Web Service interface, and through information maintenance and interconnection among the MES system, the Web service function and the defoaming machine, the elargol defoaming program in semiconductor packaging can be automatically controlled. And automatic calling and parameter comparison of a defoaming program can be realized. By automatically calling the defoaming program and comparing the parameters, the situation of manual operation errors is eliminated, and the stability of the defoaming process is improved. For the elargol which is not defoamed by the machine table, the defoaming machine does not send an instruction to the MES system, and the MES system does not give out the elargol; therefore, fool-proof clamping control of a silver colloid defoaming closed loop is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging, and more particularly to a method for automatically controlling a silver paste degassing procedure in semiconductor packaging. Background Art

[0002] Conductive silver paste for semiconductor materials generally consists of a base resin and a conductive filler. The base resin's bonding action binds the conductive filler together to form a conductive path, enabling conductive bonding between objects. Conductive silver paste prevents material deformation, thermal damage to electronic components, and the formation of internal stresses caused by high soldering temperatures. It also avoids environmental pollution caused by the heavy metal lead in tin-lead solder. It is widely used in the packaging and bonding of electronic components and assemblies, including liquid crystal displays, light-emitting diodes, integrated circuit chips, printed circuit board assemblies, dot matrix tiles, ceramic capacitors, membrane switches, smart cards, and radio frequency identification.

[0003] During the production, mixing, and packaging processes of conductive silver glue, air can form bubbles in the glue. If these bubbles aren't removed, the glue's high density prevents the bubbles from naturally discharging when applied to the product being bonded. This can affect the bonding process, as the adhesive's high density prevents them from naturally discharging. The more bubbles there are, the weaker the bond, making it more susceptible to vibration and detachment. Therefore, the degassing process for silver glue is a key production control point for manufacturers.

[0004] Manufacturers generally use a degassing machine for degassing. Its working principle is to remove the bubbles in the liquid through the centrifugal force of revolution, thereby improving the stability of the silver glue.

[0005] The degassing machines currently used in the industry have the following disadvantages: 1. The degassing program is manually selected by the staff on the degassing machine. This method is prone to wrong program selection and cannot achieve foolproof control after wrong selection. On the other hand, it requires certain professional skills or experience for the staff. 2. The degassing parameters cannot be automatically compared. Conventional degassing machines do not have a host computer or a communication interface. They only have a PLC control unit, which makes it impossible to obtain data in real time, send instructions, or perform data comparison processing. Instead, the machine is operated by a single operator, which is prone to errors. There is no remedy plan after an error occurs, which may result in incomplete degassing of the silver glue. 3. Whether the degassing machine has truly degassed the silver glue, the MES system cannot conduct closed-loop control, which will result in the silver glue products that have not been degassed being released to the production line.

[0006] Therefore, it is urgent to provide a method that can automatically control the silver glue degassing process. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a method for automatically controlling the degassing procedure of silver glue in semiconductor packaging. The method can realize automatic calling of the program and parameter comparison through information maintenance and interconnection between the MES system, Web service function and the degassing machine; for silver glue that has not been degassed by the machine, the degassing machine will not send instructions to the MES system, and the MES system will not release silver glue; thereby realizing the closed-loop anti-fool card control of silver glue degassing.

[0008] The present invention discloses a method for automatically controlling the degassing process of silver glue in semiconductor packaging, which is applied to a silver glue degassing system. The silver glue degassing system includes an MES system and at least one degassing machine. The MES system and the degassing machine are interconnected, and the degassing machine can call the program in the MES system. The MES system includes a silver glue material management unit, an information comparison unit, and a control program generation unit. The silver glue material management unit records various types of silver glue, as well as the material codes, degassing program names, and parameter ranges corresponding to each type of silver glue. The information comparison unit compares the information of the silver glue to be degassed with the information in the silver glue material management unit and sends the comparison result to the control program generation unit. The control program generation unit generates a degassing program or an exception program based on the comparison result received. The degassing machine is pre-set with actual degassing parameters corresponding to various types of silver glue; The method comprises the following steps: S1. The MES system obtains information about one or more silver pastes to be degassed and sends it to the information comparison unit. The information comparison unit compares the information about the silver paste to be degassed with the information from the silver paste material management unit and sends the result to the control program generation unit. If the comparison results are consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range. If the comparison results are inconsistent, the information about the silver paste to be degassed is obtained again or an abnormal program is generated. S2. After the degassing machine calls the degassing program, the staff puts the silver paste to be degassed into the degassing machine. The degassing machine sends the actual degassing parameters and program to the MES system for comparison. If the comparison results are consistent, it prompts to start degassing; if the comparison results are inconsistent, it prompts an abnormality; S3. After the degassing machine completes the degassing, it sends the degassing completed silver glue information to the MES system. The MES system receives the degassing completed silver glue information and performs the silver glue material distribution procedure normally. If the MES system does not receive the degassing completed silver glue information, it prompts that the silver glue has not been degassed and the silver glue material distribution procedure shall not be performed.

[0009] Preferably, the MES system and the degassing machine are interconnected via a Web Service interface.

[0010] Preferably, in step S1, if the comparison results are inconsistent, the information of the silver paste to be degassed is re-obtained for comparison. If the comparison results are consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range, and continues with steps S2 and S3; if the comparison results are inconsistent, an abnormal program is generated.

[0011] Preferably, the processing method after generating the abnormal program is to provide feedback to the staff.

[0012] Preferably, the information of the silver paste to be degassed is the material code of the silver paste to be degassed.

[0013] In step S2, the degassing machine starts degassing after receiving the degassing start message sent by the MES system; the degassing machine limits degassing after receiving the abnormality message and gives feedback to the staff.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes automatic calling of degassing programs and parameter comparison through information maintenance and interconnection between the MES system, Web service function and the degassing machine; for silver glue that has not been degassed by the machine, the degassing machine will not send instructions to the MES system, and the MES system will not release silver glue; thereby realizing fool-proof card control of the silver glue degassing closed loop.

[0015] The present invention eliminates manual operation errors and improves the stability of the degassing process by automatically calling the degassing program and comparing parameters.

[0016] The present invention utilizes the closed-loop interaction between the MES system and the degassing machine to forcibly intercept the undegassing silver glue, thereby realizing dual fool-proof card control of hardware and software.

[0017] The method provided by the present invention simplifies the operating process, reduces the dependence on the experience of the staff in the degassing process, and supports the automatic verification of batch processing of multiple hoses, thereby improving work efficiency.

[0018] The MES system of the present invention stores the degassing procedures and parameter ranges of various types of silver paste, providing traceable degassing data for semiconductor packaging and facilitating the upgrade of intelligent manufacturing and quality management. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] The present invention discloses a method for automatically controlling the degassing procedure of silver glue in semiconductor packaging. The method is applied to a silver glue degassing system. The silver glue degassing system includes an MES system and at least one degassing machine. The MES system and the degassing machine are interconnected via a Web Service interface. The present invention can realize automatic calling and parameter comparison of the degassing program through information maintenance and interconnection between the MES system, the Web Service function and the degassing machine. That is, based on Web Service, the degassing machine can access and call the program in the MES system, and can also send and receive relevant information of the MES system.

[0021] The MES system includes a silver glue material management unit, an information comparison unit, and a control program generation unit. The silver glue material management unit records various types of silver glue, along with their corresponding material codes, degassing program names, and parameter ranges. The information comparison unit compares the information about the silver glue to be degassed with the information in the silver glue material management unit and sends the comparison results to the control program generation unit. The control program generation unit then generates a degassing program or an exception program based on the comparison results.

[0022] The degassing machine is pre-set with actual degassing parameters corresponding to various types of silver glue.

[0023] Each unit in the MES system and the degassing machine is pre-set and can be deleted, added or modified later as needed to improve the intelligent performance of the silver glue degassing system.

[0024] The method for automatically controlling the degassing process of silver paste in semiconductor packaging provided by the present invention comprises the following steps: S1. The MES system obtains information of one or more silver pastes to be degassed and sends it to the information comparison unit. The information comparison unit sends the comparison result of the information of the silver paste to be degassed and the information of the silver paste material management unit to the control program generation unit. If the comparison results are consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range; if the comparison results are inconsistent, the information of the silver paste to be degassed is obtained again or an abnormal program is generated.

[0025] In step S1, if the comparison results are inconsistent, the information of the silver paste to be degassed can be obtained again for comparison. If the comparison results are consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range, and continues to steps S2 and S3; if the comparison results are inconsistent, an abnormal program is generated.

[0026] In step S1, the processing method after the abnormal program is generated is to feedback to the staff, and after the staff resolves the abnormality, the card control of the degassing program is continued.

[0027] In step S1 , the information of the silver paste to be degassed is the material code of the silver paste to be degassed, and the material code is unique.

[0028] S2. After the degassing machine calls the degassing program, the staff puts the silver paste to be degassed into the degassing machine. The degassing machine sends the actual degassing parameters and program of the silver paste to be degassed to the MES system for comparison. If the comparison results are consistent, it will prompt to start degassing; if the comparison results are inconsistent, it will prompt an abnormality.

[0029] The deaerator begins deaeration after receiving a message from the MES system prompting it to begin deaeration. Upon receiving an abnormality message, the deaerator limits deaeration and provides feedback to the operator. The comparison process in the MES system can also be performed by an information comparison unit. By automatically calling the deaeration program and comparing parameters, the present invention eliminates manual errors and improves the stability of the deaeration process.

[0030] S3. After the degassing machine completes the degassing, it sends the degassing completed silver glue information to the MES system. The MES system receives the degassing completed silver glue information and performs the silver glue material distribution procedure normally. If the MES system does not receive the degassing completed silver glue information, it prompts that the silver glue has not been degassed and the silver glue material distribution procedure shall not be performed.

[0031] For silver paste that has not been degassed by the machine, the degassed machine will not send instructions to the MES system, and the MES system will not release silver paste; thus, a closed-loop anti-error control system for silver paste degassed is achieved. This invention utilizes the closed-loop interaction between the MES system and the degassed machine to forcibly intercept undegassed silver paste, achieving dual anti-error control of hardware and software.

[0032] The method provided by the present invention simplifies the operating process, reduces the dependence on the experience of the staff in the degassing process, and supports the automatic verification of batch processing of multiple hoses, thereby improving work efficiency.

[0033] On the other hand, the MES system and degassing machine of the present invention store the degassing procedures and parameter ranges of various types of silver glue, providing traceable degassing data for semiconductor packaging, and facilitating the upgrade of intelligent manufacturing and quality management.

[0034] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this field, other variations and improvements can be made without departing from the creative concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for automatically controlling the degassing process of silver glue in semiconductor packaging, applied to a silver glue degassing system, wherein the silver glue degassing system includes an MES system and at least one degassing machine, characterized in that: The MES system is interconnected with the degassing machine, and the degassing machine can call the program in the MES system; The MES system includes a silver glue material management unit, an information comparison unit, and a control program generation unit; the silver glue material management unit records various types of silver glue, as well as the material codes, degassing program names, and parameter ranges corresponding to each type of silver glue; the information comparison unit compares the information of the silver glue to be degassed with the information in the silver glue material management unit and sends the comparison result to the control program generation unit; The control program generating unit generates a degassing program or an abnormality program according to the received comparison result; The degassing machine is pre-set with actual degassing parameters corresponding to various types of silver glue; The method comprises the following steps: S1. The MES system obtains information about one or more silver pastes to be degassed and sends it to the information comparison unit. The information comparison unit compares the information about the silver paste to be degassed with the information from the silver paste material management unit and sends the result to the control program generation unit. If the comparison results are consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range. If the comparison results are inconsistent, the information about the silver paste to be degassed is obtained again or an abnormal program is generated. S2. After the degassing machine calls the degassing program, the staff puts the silver paste to be degassed into the degassing machine. The degassing machine sends the actual degassing parameters and program to the MES system for comparison. If the comparison results are consistent, it prompts to start degassing; if the comparison results are inconsistent, it prompts an abnormality; S3. After the degassing machine completes the degassing, it sends the degassing completed silver glue information to the MES system. The MES system receives the degassing completed silver glue information and performs the silver glue material distribution procedure normally. If the MES system does not receive the degassing completed silver glue information, it prompts that the silver glue has not been degassed and the silver glue material distribution procedure shall not be performed.

2. The method according to claim 1, characterized in that The MES system and the degassing machine are interconnected via a Web Service interface.

3. The method according to claim 2, characterized in that In step S1, if the comparison result is inconsistent, the information of the silver paste to be degassed is obtained again for comparison. If the comparison result is consistent, the control program generation unit generates a degassed program containing the degassed program name and parameter range, and continues to steps S2 and S3; if the comparison result is inconsistent, an abnormal program is generated.

4. The method according to claim 3, characterized in that The method of handling after generating an abnormal program is to feedback to the staff.

5. The method according to claim 4, characterized in that The information of the silver paste to be degassed is the material code of the silver paste to be degassed.

6. The method according to claim 1, characterized in that In step S2, the degassing machine starts degassing after receiving the degassing start message sent by the MES system; the degassing machine limits degassing after receiving the abnormality message and gives feedback to the staff.