CN112702905B - Backtracking method and system for printed circuit board yield and production equipment error rate - Google Patents

Abstract

A retrospective method and system for the yield rate of printed circuit boards and the error rate of production equipment. A circuit board is assigned a motherboard code, the circuit board is divided into a plurality of manufacturing areas according to the printed circuit board, and each manufacturing area is assigned an area Code; mark an information image code for each printed circuit board produced by the circuit board; to detect the printed circuit board, if it does not meet the product standard, a defect feature will be generated to record the printed circuit board yield and production equipment errors When the printed circuit board is defective, it can not only judge the position of the printed circuit board itself, but also judge the manufacturing process of the circuit board on the printed circuit board, which can greatly improve the production quality of the subsequent printed circuit board. rate and reduce the error rate of production equipment.

Description

Backtracking method and system for printed circuit board yield and production equipment error rate

technical field

A retrospective method and system for the yield rate of printed circuit boards and the error rate of production equipment, especially the information graphic code of the printed circuit board includes the code of the circuit board and the area code of the printed circuit board located on the circuit board, and can be used in the printed circuit board. In case of board production defects, the manufacturing process can be known in real time and the method and system of the printed circuit board produced by the circuit board can be traced back.

Background technique

Press, at present, the printed circuit board is cut into a printed circuit board of a specific size from the circuit board after multiple processes according to the required size. In order to improve product quality and yield, after the printed circuit board is remanufactured, it will go through various Inspection, in order to prevent the continuous production of defective products or reduce the probability of producing defective products, the production parameters or processes are generally marked on the printed circuit board in the form of barcodes. When a problem occurs at the client, the parameters and processes recorded in the label can be used to understand the cause of the defect, thereby improving the quality and yield of subsequent production products. However, the printed circuit board is formed by cutting the circuit board after several processes are completed. Therefore, the position of the printed circuit board on the motherboard is very important for the "retrospective analysis" and "defect cause analysis" of defects, but nowadays The marking of the printed circuit board, and its position on the circuit board cannot be known, and the cause of the defect cannot be judged effectively and accurately, and the improvement of yield and quality is limited.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

In view of the above-mentioned problems to be solved and the reasons thereof, in particular, the present invention provides a method and a device for backtracking the yield rate of printed circuit boards and the error rate of production equipment, which utilizes the information graphic code on the printed circuit board to include the main board of the circuit board The code and the area code of the manufacturing area of the printed circuit board on the circuit board, so that when the printed circuit board is defective, in addition to the location of the defect on the printed circuit board itself, it can be judged. Judging the process can greatly improve the production yield of subsequent printed circuit boards and reduce the error rate of production equipment.

(2) Technical solutions and beneficial effects

The present invention is a backtracking method for the yield rate of printed circuit boards and the error rate of production equipment. Each manufacturing area is assigned a corresponding area code, wherein the information of the area code includes the motherboard code and the location information of the area code, and each printed circuit board produced by the circuit motherboard is marked with a Information graphic code, wherein the information of the information graphic code includes the information of the main board code and the area code, to identify the appearance of each printed circuit board, and to detect the printed circuit board accordingly, if it does not meet a product standard, generate a The defect feature is used to record the printed circuit board yield rate and the production equipment error rate, and display the information of the information image code of the printed circuit board and the defect feature on a display interface.

According to another embodiment of the present invention, the above-mentioned method further includes obtaining the corresponding manufacturing area according to the information image code, and recalling the printed circuit boards produced in the manufacturing area.

According to another embodiment of the present invention, the above-mentioned method further includes repairing or adjusting the information image code to obtain the corresponding circuit board.

According to another embodiment of the present invention, the content of the above-mentioned information image code further includes production information.

According to another embodiment of the present invention, the above-mentioned information graphic code is a one-dimensional code or a two-dimensional code.

The invention is a retrospective system for the yield rate of printed circuit boards and the error rate of production equipment, comprising a circuit main board, an appearance detection module, a picture code identification module and a display module. The above-mentioned circuit board is used for producing a plurality of printed circuit boards, which includes a board code and a plurality of manufacturing areas. The manufacturing area is divided by the circuit board according to the printed circuit boards, and each manufacturing area has a corresponding area code, wherein the information of the area code includes the motherboard code and the location information of the area code. Each of the printed circuit boards has an information image code, and the information of the information image code includes the information of the printed circuit board and the area code. The above-mentioned appearance inspection module identifies the appearance of each printed circuit board and detects the printed circuit board accordingly. If it does not meet a product standard, a defect feature is generated to record the printed circuit board yield and the production equipment error. Rate. The above-mentioned image code identification module is used for identifying the information image code of the printed circuit board. The above-mentioned display module is used for displaying the information of the information image code and the defect feature.

According to another embodiment of the present invention, the system further includes a retrospective module for obtaining the corresponding manufacturing area according to the information image code, and recalling the printed circuit boards produced in the manufacturing area.

According to another embodiment of the present invention, the above-mentioned system further includes a maintenance module for repairing or adjusting the information image code to obtain the corresponding circuit board.

According to another embodiment of the present invention, the content of the information image code of the above-mentioned system further includes production information.

According to another embodiment of the present invention, the information graphic code of the above-mentioned system is a one-dimensional code or a two-dimensional code.

In summary, the present invention provides a method and a system for backtracking the yield rate of printed circuit boards and the error rate of production equipment, which is a production equipment that can find defective features in real time according to the information map code of the printed circuit board, and Real-time backtracking of printed circuit boards produced by the production equipment, automatically propose adjustment measures, shorten the time for producing defective printed circuit boards, greatly save materials and related costs, greatly improve the production yield of subsequent printed circuit boards and reduce errors in production equipment Rate.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present invention more clearly understood, the accompanying drawings are described as follows:

FIG. 1 is a schematic diagram illustrating the relationship between various devices and modules in a backtracking system for printed circuit board yield and production equipment error rate according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart illustrating a method for backtracking the yield rate of printed circuit boards and the error rate of production equipment according to an embodiment of the present invention.

3 is a schematic diagram illustrating a printed circuit board formed on a circuit board according to an embodiment of the present invention.

Description of reference numerals

100: Retrospective System for Printed Circuit Board Yield and Production Equipment Error Rates

110: circuit board

112: Motherboard code

114: Manufacturing area

115: area code

116: Printed circuit boards

117: Infographic Code

120: Appearance detection module

130: Image code recognition module

140: Display Module

150: Backtracking module

160: Repair Module

201-206: Steps

Detailed ways

In order to facilitate the understanding of the features, contents and advantages of the present invention, the present invention is hereby described in detail with the drawings and the expression form of the embodiments as follows, and the drawings used therein are only intended to illustrate and assist the description, It is not necessarily the real proportion and precise configuration after the implementation of the present invention, so the proportion and configuration relationship of the attached drawings should not be interpreted or limited to the scope of the patent application of the present invention in actual implementation.

Please refer to FIG. 1 and FIG. 3 . FIG. 1 is a diagram illustrating the relationship between devices and modules in a backtracking system for printed circuit board yield and production equipment error rate according to an embodiment of the present invention, and FIG. 3 is a diagram of A schematic diagram of a printed circuit board formed on a circuit board according to an embodiment of the present invention is shown. The retrospective system 100 of the printed circuit board yield rate and production equipment error rate of FIG. 1 includes a circuit board 110 , an appearance detection module 120 , an image code recognition module 130 and a display module 140 .

The above-mentioned circuit board 110 is used to produce a plurality of printed circuit boards 116 (shown in FIG. 3 ), which includes a board code 112 and a plurality of manufacturing areas 114 . According to another embodiment of the present invention, the mainboard code 112 can be, for example, any form of numbers or image codes, and the production information of the mainboard code 112 can be pushed back according to the above-mentioned arbitrary forms of numbers or image codes.

The above-mentioned manufacturing area 114 is divided by the circuit board 110 according to the printed circuit boards, each of the manufacturing areas 114 has a corresponding area code 115, wherein the information of the area code 115 includes the motherboard code 112 and the area code 115 location information. According to another embodiment of the present invention, the above-mentioned area code 115 can be, for example, any form of numeral or image code, and the coordinate position of the manufacturing area 114 can be pushed back according to the above-mentioned arbitrary form of numeral or image code.

Each of the above-mentioned printed circuit boards 116 has an information map code 117 , and the information of the information map code 117 includes the information of the printed circuit board 116 and the area code 115 . According to another embodiment of the present invention, the content of the above-mentioned information map code 117 further includes production information. The above-mentioned production information may be, for example, production time, product batch number, inspection parameters, and whether it is a good product. The above-mentioned infographic code 117 is a one-dimensional code or a two-dimensional code.

The appearance inspection module 120 identifies the appearance of each printed circuit board 116, and detects the printed circuit board 116 accordingly. If it does not meet a product standard, a defect feature is generated to record the printed circuit board yield and the Production equipment error rate. The above-mentioned appearance detection module 120 is any device with an image recognition function.

The above-mentioned image code identification module 130 is used for identifying the information image code 117 of the printed circuit board 116 . According to another embodiment of the present invention, the image code identification module 130 further includes identification of the motherboard code 112 and the area code 115 . The above-mentioned image code recognition module 130 is any device with image code recognition function.

The above-mentioned display module 140 is used for displaying the information of the information image code 117 and the defect feature. According to another embodiment of the present invention, the above-mentioned display module 140 can set a default typesetting method through a program, so that the board numbers of the corresponding circuit board 110 and the manufacturing area 114 can be combined in the same screen to present, and display its shortcomings. Classification and Coordinate Location.

According to another embodiment of the present invention, the above-mentioned retrospective system 100 for printed circuit board yield and production equipment error rate further includes a retrospective module 150 for obtaining the corresponding manufacturing area according to the information map code 117 and recalling the manufacturing The printed circuit boards 116 produced in the area 114 .

According to another embodiment of the present invention, the system 100 for tracing the printed circuit board yield and production equipment error rate further includes a maintenance module 160 for maintaining or adjusting the information map code 117 to obtain the corresponding circuit board 110 .

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart illustrating a method for backtracking the yield rate of printed circuit boards and the error rate of production equipment according to an embodiment of the present invention. Also see Figures 1-3. In step 201, a motherboard code 112 is assigned to a circuit board 110 having a plurality of printed circuit boards 116.

In step 202, the circuit board 110 is divided into a plurality of manufacturing areas 114 according to the printed circuit boards 116, and a corresponding area code 115 is assigned to each of the manufacturing areas 114, wherein the information of the area code 115 includes the The main board code 112 and the location information of the area code 115 .

In step 203 , each printed circuit board 116 produced by the circuit board 110 is marked with an information map code 117 , wherein the information of the information map code 117 includes the information of the motherboard code 112 and the area code 115 . According to another embodiment of the present invention, the content of the above-mentioned information map code 117 further includes production information. The above-mentioned infographic code 117 is a one-dimensional code or a two-dimensional code.

In step 204 , the appearance of each printed circuit board 116 is identified, and the printed circuit board 116 is detected accordingly.

In step 205, if it is detected that a product standard is not met, a defect feature is generated to record the printed circuit board yield and the production equipment error rate.

In step 206, the information of the infographic code 117 of the printed circuit board 116 and the defect feature are displayed on a display interface. Therefore, it can be clearly understood which circuit board 110 the printed circuit board 116 is made of, and where the circuit board 110 is located. Through this tracing technology, the defects on the board originally only analyzed in the area can be traced back to the manufacturing process of the circuit board 110 before cutting, so that the production history of the product is more complete.

According to another embodiment of the present invention, the above method further includes obtaining the corresponding manufacturing area 114 according to the information map code 117 , and recalling the printed circuit boards 116 produced in the manufacturing area 114 . As shown in FIG. 3 , the information graphic code 117 on the printed circuit board 116 of the present case also has an area code 115 including the manufacturing area 114 , so that the subsequent data collection and analysis can be more clear.

According to another embodiment of the present invention, the above method further includes repairing or adjusting the information map code 117 to obtain the corresponding circuit board 110 . In this way, the plurality of printed circuit boards 116 can be restored to the main circuit board 110, and through big data statistics, it can be deduced which manufacturing area 114 of the circuit motherboard 110 is prone to defects during the production process, and the manufacturing area where the defect occurs. Whether 114 is related to production equipment and fixtures, thereby providing producers with more reliable data to prevent or improve the quality of subsequent production. At the same time, if subsequent shipments are delivered to the client, and product defects are recalled in the future, this tracking system can accurately determine the range and quantity of products that need to be recalled, reducing losses.

In summary, with the method and system for backtracking the yield rate of printed circuit boards and the error rate of production equipment provided by the present invention, the production equipment and manufacturing areas with defective features can be found in real time according to the information map code of the printed circuit board in real time , and can trace back the printed circuit boards produced by the production equipment in real time, automatically propose adjustment measures, shorten the time for producing defective printed circuit boards, greatly save materials and related costs, greatly improve the production yield of subsequent printed circuit boards and reduce production. The error rate of the device.

Although the embodiments of the present invention have been disclosed as above, they are not intended to limit the present invention. Those who are familiar with the art can do various things according to the spirit of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the patent application later.

Claims (10)

1. A method for tracing the yield of printed circuit board and the error rate of production equipment includes:

assigning a circuit board having a plurality of printed circuit boards to a board code;

dividing the circuit board into a plurality of manufacturing areas according to the printed circuit boards, and assigning an area code corresponding to each manufacturing area, wherein the information of the area code includes the board code and the position information of the area code;

marking an information graphic code for each printed circuit board produced by the circuit main board, wherein the information of the information graphic code includes the main board code and the area code;

identifying the appearance of each PCB and detecting the PCB to generate a defect feature for recording the yield of the PCB and the error rate of a production equipment if the PCB does not conform to a product standard;

real-time finding the production equipment and the manufacturing area corresponding to the defect feature through the information graphic code of the printed circuit board having the defect feature;

tracing the printed circuit board produced by the production equipment in real time and automatically proposing adjustment countermeasures; and

the information of the information graphic code and the defect of the printed circuit board are displayed on a display interface.

2. The method of claim 1 further comprises retrieving the corresponding manufacturing area according to the information pattern code, and retrieving the printed circuit boards produced by the manufacturing area.

3. The method as claimed in claim 1, further comprising repairing or adjusting the information code to obtain the corresponding circuit board.

4. The method of claim 1, wherein the information graphic code further comprises production information.

5. The method of claim 1, wherein the information graphic code is a one-dimensional code or a two-dimensional code.

6. A system for performing a trace back of printed circuit board yield and production equipment error rate using the method of any of claims 1-5, comprising:

a circuit board for producing a plurality of printed circuit boards, comprising:

a main board code; and

a plurality of manufacturing areas, which are separated from the circuit board according to the printed circuit board, each manufacturing area has a corresponding area code, wherein the information of the area code includes the main board code and the position information of the area code;

wherein each printed circuit board has an information graphic code, and the information of the information graphic code includes the information of the printed circuit board and the area code;

an appearance inspection module for identifying the appearance of each PCB and inspecting the PCB to generate a defect feature for recording the yield of the PCB and the error rate of a production equipment if the PCB does not conform to a product standard;

a pattern code identification module for identifying the information pattern code of the printed circuit board; and

a display module for displaying the information of the information icon and the defect feature.

7. The system of claim 6, further comprising a trace-back module for retrieving the corresponding manufacturing area according to the information icon code and recalling the printed circuit boards produced by the manufacturing area.

8. The system for tracing back yield and error rate of manufacturing equipment of printed circuit board as claimed in claim 6, further comprising a maintenance module for maintaining or adjusting the information graphic code to obtain the corresponding circuit board.

9. The system for tracing back yield and error rate of production equipment of claim 6, wherein the content of said information graphic code further comprises production information.

10. The system of claim 6, wherein the information graphic code is a one-dimensional code or a two-dimensional code.

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