TWI745131B - Printed circuit board yield rate and production equipment error rate backtracking method and system thereof - Google Patents

Abstract

A method for tracing back a yield rate of printed circuit board (PCB) and a error rate of production equipment is to assign a motherboard code to a circuit board, divide the circuit board into multiple manufacturing areas based on the PCB, and assign an area code to each manufacturing area. Each PCB produced by the circuit board is marked with an information pattern code. According to which the PCB is detected, if it does not meet the product standard, a defect feature is generated to record the PCB yield rate and production equipment error rate. When the PCB is defective, in addition to judging the location of the defect in the PCB itself, it can also judge the manufacturing process of the circuit board in the PCB, which can greatly improve the production yield of subsequent PCB and reduce the error rate of production equipment.

Description

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

A method and system for tracing back the yield rate of printed circuit boards and the error rate of production equipment, especially the information graphics 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 on the printed circuit board In the event of a production defect, the manufacturing process can be immediately known and the method and system for tracing back the printed circuit board produced by the circuit main board.

According to the current printed circuit board, the printed circuit board is cut into a specific size printed circuit board according to the required size by the circuit board after multiple processes. In order to improve product quality and yield, the printed circuit board will undergo various inspections after it is manufactured. 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 by bar code. Once the defective product is detected or the printed circuit board is When a problem occurs on the client side, the parameters and processes recorded in the label can be used to understand the cause of the defect, which can improve the quality and yield of subsequent products. However, printing The printed circuit board is formed by cutting the circuit board after multiple manufacturing processes. Therefore, the position of the printed circuit board on the motherboard is very important for the "retrospective analysis" of defects and the "defect cause analysis", but nowadays printed circuits The label of the board cannot know its position on the circuit main board, and it is impossible to effectively and accurately determine the cause of the defect, and it is of limited help to the improvement of yield and quality.

In view of the above-mentioned problems to be solved and their reasons, in particular, the present invention provides a method and device for tracing back the yield rate of printed circuit boards and the error rate of production equipment, using the information pattern on the printed circuit board to include the motherboard code of the circuit board 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 judging the position of the printed circuit board itself, it can also determine the manufacturing process of the circuit board on the printed circuit board. Making judgments can greatly improve the production yield of subsequent printed circuit boards and reduce the error rate of production equipment.

The present invention is a method for tracing back the yield rate of printed circuit boards and the error rate of production equipment. The method includes assigning a circuit motherboard with a plurality of printed circuit boards to a motherboard code, and partitioning the circuit motherboard into a plurality of printed circuit boards according to the printed circuit boards. Manufacturing area, and assigning an area code corresponding to each manufacturing area, 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 board is marked with an information Graphic code, where the information of the information graphic code includes the motherboard code and the information of the region 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, a defect will be generated Feature to record the print By scanning the yield rate of the circuit board and the error rate of the production equipment, the information of the information pattern of the printed circuit board and the characteristic of the defect are displayed on a display interface.

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

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

According to another embodiment of the present invention, the content of the aforementioned information pattern further includes production information.

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

The invention is a backtracking system for printed circuit board yield and production equipment error rate, which includes a circuit main board, an appearance detection module, a pattern recognition module, and a display module. The above-mentioned circuit main board is used to produce a plurality of printed circuit boards, which includes main board codes and a plurality of manufacturing areas. The manufacturing area is separated by the circuit board and the printed circuit board areas, and each manufacturing area has a corresponding area code, wherein the information of the area code includes the main board code and the location information of the area code. Each of the printed circuit boards has an information pattern, and the information of the information pattern includes information of the printed circuit board and the area code. The above-mentioned appearance inspection module recognizes 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 rate and the production equipment Error rate. The above image code recognition module, use To identify the information graphic code of the printed circuit board. The above-mentioned display module is used to display the information of the information image code and the characteristic of the defect.

According to another embodiment of the present invention, the above-mentioned system further includes a traceback module for obtaining the corresponding manufacturing area according to the information pattern, 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 repair module for repairing or adjusting the information pattern to obtain the corresponding circuit board.

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

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

To sum up, the present invention provides a method and system for tracing back 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 pattern of the printed circuit board, as well as real-time backtracking. The printed circuit board produced by this production equipment automatically proposes adjustment countermeasures, shortens the time to produce defective printed circuit boards, greatly saves materials and related costs, greatly improves the production yield of subsequent printed circuit boards and reduces the error rate of production equipment.

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

110: Circuit board

112: Motherboard code

114: Manufacturing area

115: area code

116: printed circuit board

117: Information Graphic Code

120: Appearance inspection module

130: Image code recognition module

140: display module

150: Retrospective Module

160: repair module

201-206: Step

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the description of the attached drawings is as follows: FIG. 1 is a diagram showing the relationship structure of each device and module 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 of a method for tracing back the yield rate of printed circuit boards and the error rate of production equipment according to an embodiment of the present invention.

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

In order to understand the features, content and advantages of the present invention, the present invention is combined with the drawings and described in detail in the form of an embodiment as follows. The drawings used therein are for illustrative purposes only and as an aid to the description. It is not necessarily the true ratio and precise configuration after the implementation of the present invention, so the ratio and configuration relationship of the attached drawings should not be interpreted to limit the scope of the patent application for the actual implementation of the present invention.

Please refer to FIGS. 1 and 3. FIG. 1 is a diagram showing the relationship structure of each device and module in a backtracking system for printed circuit board yield and production equipment error rate according to an embodiment of the present invention. FIG. 3 is a drawing A schematic diagram of a printed circuit board formed on a circuit main board according to an embodiment of the present invention is shown. The backtracking system 100 of printed circuit board yield and production equipment error rate of FIG. 1 includes a circuit main board 110, an appearance inspection module 120, a pattern recognition module 130 and a display module 140.

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

The above-mentioned manufacturing area 114 is separated by the circuit board 110 according to the printed circuit board areas, and each of the manufacturing areas 114 has a corresponding area code 115, wherein the information of the area code 115 includes the main board 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 number or image code, and the coordinate position of the manufacturing area 114 can be pushed back based on the above-mentioned arbitrary form of number or image code.

Each of the above-mentioned printed circuit boards 116 has an information pattern 117, and the information of the information pattern 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 aforementioned information pattern 117 further includes production information. The above-mentioned production information may be, for example, production time, product batch number, inspection parameters, whether it is a good product, and other data. The aforementioned information graphic code 117 is a one-dimensional code or a two-dimensional code.

The above-mentioned appearance inspection module 120 recognizes 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 error rate of the production equipment. The above-mentioned appearance detection module 120 is any device with an image recognition function.

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

The above-mentioned display module 140 is used for displaying the information of the information image code 117 and the feature of the defect. According to another embodiment of the present invention, the above-mentioned display module 140 can combine the board numbers of the corresponding circuit board 110 and the manufacturing area 114 on the same screen to display its shortcomings and characteristics by setting a preset layout method through a program. Classification and coordinate position.

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

According to another embodiment of the present invention, the above-mentioned traceability system 100 for printed circuit board yield and production equipment error rate further includes a maintenance module 160 for repairing or adjusting the information pattern 117 to obtain the corresponding circuit board 110 .

Please refer to FIG. 2. FIG. 2 is a schematic flowchart of a method for tracing back the yield rate of printed circuit boards and the error rate of production equipment according to an embodiment of the present invention. Please also refer to Figure 1 to Figure 3. In step 201, a circuit main board 110 having a plurality of printed circuit boards 116 is assigned a main board code 112.

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

In step 203, each printed circuit board 116 produced by the circuit main board 110 is marked with an information pattern 117, wherein the information of the information pattern 117 includes the information of the main board code 112 and the area code 115. According to another embodiment of the present invention, the above-mentioned resources The content of the image code 117 further includes production information. The aforementioned information graphic 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 inspected accordingly.

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

In step 206, the information of the information pattern 117 of the printed circuit board 116 and the defect feature are displayed on a display interface. Therefore, it is possible to clearly understand which circuit board 110 the printed circuit board 116 is made of, and where it is located on the circuit board 110. Through this retrospective technology, the defects that were originally only analyzed on the area board can be retrospected 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 pattern 117, and recalling the printed circuit boards 116 produced by the manufacturing area 114. As shown in FIG. 3, the information graphic code 117 on the printed circuit board 116 of this case will also have an area code 115 including the manufacturing area 114, so that 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 pattern 117 to obtain the corresponding circuit board 110. In this way, multiple printed circuit boards 116 can be restored to the main circuit board 110, and large data statistics can be used to infer which manufacturing area 114 of the circuit board 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 governance, it can provide producers with more reliable data to prevent or improve the quality of subsequent production. At the same time, if it is subsequently shipped to the client, In the future, product defects are recalled. Through this tracking system, we can accurately determine the scope and quantity of products that need to be recalled to reduce losses.

In summary, with the method and system for backtracking printed circuit board yield and production equipment error rate provided by the present invention, the production equipment and manufacturing area with defective characteristics can be found in real time according to the information pattern of the printed circuit board. The printed circuit boards produced by the production equipment can be traced back in real time, and adjustment countermeasures can be automatically proposed to shorten the time for producing defective printed circuit boards, greatly save materials and related costs, greatly increase the production yield of subsequent printed circuit boards and reduce production equipment The error rate.

Although the embodiments of the present invention have been disclosed as above, they are not intended to limit the present invention. Anyone familiar with the art can make various changes without departing from the spirit and scope of the present invention according to the spirit of the present invention. Therefore, the scope of protection of the present invention shall be subject to those defined by the scope of patent application.

110: Circuit board

112: Motherboard code

114: Manufacturing area

115: area code

116: printed circuit board

117: Information Graphic Code

Claims (10)

A method for tracing back the yield rate of printed circuit boards and the error rate of production equipment includes: assigning a circuit main board with a plurality of printed circuit boards to a main board code; dividing the circuit main board into a plurality of manufacturing areas based on the printed circuit boards , And assign an area code corresponding to each manufacturing area, where the information of the area code includes the motherboard code and the location information of the area code; each printed circuit board produced by the circuit motherboard is marked with an information pattern , Where the information of the information graphic code includes the information of the motherboard code and the area code; identify the appearance of each printed circuit board, and detect the printed circuit board accordingly, and produce a defect feature if it does not meet a product standard, It is used to record the yield rate of the printed circuit board and the error rate of a production equipment; through the information pattern of the printed circuit board with the defect feature, the production equipment and the manufacturing area corresponding to the defect feature can be found in real time; The printed circuit board produced by the production equipment automatically proposes adjustment measures; and displays the information of the information pattern of the printed circuit board and the defect feature on a display interface. The method for tracing back the yield rate of printed circuit boards and the error rate of production equipment as described in claim 1, further includes obtaining the corresponding manufacturing area according to the information pattern, and recalling the printed circuit boards produced in the manufacturing area. The retrospective method of printed circuit board yield and production equipment error rate as described in claim 1, further includes repairing or adjusting the information pattern to obtain the corresponding circuit board. The backtracking method of printed circuit board yield and production equipment error rate as described in claim 1, wherein the content of the information pattern further includes production information. The backtracking method of printed circuit board yield and production equipment error rate as described in claim 1, wherein the information graphic code is a one-dimensional code or a two-dimensional code. A retrospective system for performing printed circuit board yield and production equipment error rate using the method described in any one of claim items 1-5, including: a circuit main board for producing a plurality of printed circuit boards, including: a main board code ; And a plurality of manufacturing areas are separated by the circuit board according to the printed circuit board areas, each of the manufacturing areas has a corresponding area code, wherein the information of the area code includes the motherboard code and the location of the area code Information; each of the printed circuit boards has an information pattern, and the information of the information pattern includes information about the printed circuit board and the area code; an appearance detection module that identifies the appearance of each printed circuit board, and According to the detection of the printed circuit board, if it does not meet a product standard, a defect feature is generated to record the yield rate of the printed circuit board and the error rate of a production equipment; a pattern recognition module is used to identify the printed circuit The information pattern of the board; and a display module for displaying the information of the information pattern and the defect characteristics. The backtracking system for printed circuit board yield and production equipment error rate as described in claim 6, further includes a backtracking module for obtaining the corresponding manufacturing area based on the information pattern, and recalling the production in the manufacturing area These printed circuit boards. The backtracking system of printed circuit board yield and production equipment error rate as described in claim 6, further includes a maintenance module for repairing or adjusting the information pattern to obtain the corresponding circuit board. The backtracking system of printed circuit board yield and production equipment error rate as described in claim 6, wherein the content of the information pattern further includes production information. The backtracking system for printed circuit board yield and production equipment error rate as described in claim 6, wherein the information graphic code is a one-dimensional code or a two-dimensional code.

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