TWI663412B - System for assisting array layout board identification and recording defect location - Google Patents

Abstract

A system for assisting array layout in identifying and recording defect locations on a circuit board. The circuit board is composed of a plurality of repeating unit circuits. The system includes: a working platform including a mobile stage, and the surface of the mobile stage has an identification. An image and at least one positioning jig for the circuit board to lean against; an observation unit located above the work platform to zoom in and observe the circuit board; an optical imaging unit located above the work platform, Can capture the identification image of the surface of the mobile stage; a receiving unit that receives the basic information of the circuit board; a display unit that displays the position distribution pattern of the multiple unit circuits of the circuit board; an input unit that inputs the point selection Message; an arithmetic control unit connected to the optical imaging unit, the receiving unit, the display unit, and the input unit; when receiving the click message, comparing the differences in the identified images taken at different time points and converting them The moving distance and angle of the circuit board, according to the basic data, define the unit circuit immediately below the observation unit at this time as a defect and Record.

Description

System for assisting array layout board identification and recording defect location

The invention relates to the technical field of circuit board inspection for array typesetting, in particular to a system for identifying defect locations on a circuit board and recording at the same time.

In the electronics industry, during the manufacturing process, electronic components such as printed circuit boards are mass-produced and manufactured, and will be shipped to multiple SMT parts manufacturing plants or IC packaging plants in the repeat layout of multiple unit circuits. The circuit board is in the form of a strip or a strip, and each circuit board is composed of a plurality of repeating unit circuits. After shipment to a packaging test factory, the unit circuit is packaged and cut into unit electronic parts. . However, the circuit board produced has a low probability that all unit circuits are good. The manufacturer will check in advance, record the number and location of defective units, and finally ship the circuit board that meets the agreed yield to the later stage. The packaging test facility must also ship this record with the shipment. With the trend of industrial automation, the data recording the number and location of defective products must also be digital data, which is convenient for the packaging test factory to record and analyze, and to carry out subsequent automated packaging operations.

In the board quality inspection, manual visual inspection is also a part of the process, but recording the visual inspection results and converting them into digital data will increase the extra work time and process. How to use the assistance of equipment to record the defect location and convert it into data during manual visual inspection will help manufacturers simplify the inspection process, speed up the operation time, and increase the production line rate.

As shown in FIG. 4, it is a block diagram of the structure of a conventional device, including an X-Y-axis moving platform 41. The X-Y-axis moving platform 41 can only adjust the position of the X-axis or Y-axis at the same time. An observation unit 42 is fixed above the X-Y-axis moving platform 41 to magnify and observe the circuit board placed on the X-Y-axis moving platform 41 to identify which unit circuit on the circuit board is a good product or a defective product. A display unit 43 is used to display the position distribution patterns of the plurality of unit circuits in the circuit board. An input unit 44 inputs a click message. An arithmetic control unit 45 is connected to each of the foregoing units. After the input information is input in the input unit 44, the movement distance between the X axis and the Y axis of the platform 41 according to the XY axis can be converted to the distance directly below the observation unit 42. Location of the unit circuit. Record the serial number represented by the unit circuit. Thereby, when the operator recognizes that the unit circuit on the circuit board is a good product or a defective product, the serial number of the defective product can be recorded digitally in synchronization. However, conventional equipment has a major disadvantage in use. The XY-axis moving platform 41 is operated in accordance with the internal precision mechanical structure to calculate its position. Therefore, only the X-axis or Y-axis position can be adjusted at the same time, which is likely to cause movement. Is not smooth or consumes too much time. In actual analysis, using this device to identify defect operations, but it adds more operating time, and the cost is higher, so the inventor thinks whether it is possible to design a human-friendly operation mode And equipment to meet the needs of the operator.

The main object of the present invention is to provide a system for assisting the layout of a circuit board for array typesetting and recording the position of defects, so that the operator can move the circuit board more quickly and conveniently in a human-friendly operation mode, and synchronously record defects during the identification operation Position, and finally output as digital data to shorten the operation time and improve production efficiency.

In order to achieve the above-mentioned object, the present invention provides a system for assisting the layout of a circuit board to identify and record defect locations. The circuit board is composed of a plurality of repeating unit circuits. The system includes a working platform including a mobile carrier. Platform, the mobile carrier surface has an identification image and at least one positioning jig for the circuit carrier to lean against; an observation unit, located above the working platform, can zoom in and observe the circuit board; An optical image capturing unit, which is located above the working platform, can capture the identification image, and defines the image captured by the mobile carrier in the initial state of the circuit board as a reference position image; a receiving unit that receives the circuit board Basic information; a display unit that displays the position distribution pattern of multiple circuit units of the circuit board according to the basic data; an input unit for inputting click information; an arithmetic control unit connected to the optical image pickup unit and the receiver Unit, the display unit, and the input unit, and the arithmetic control unit defines the optical imaging unit when receiving the click message The captured image is the selected position image, the difference between the reference position image and the selected position image is compared, and the distance and angle of the circuit board movement are converted. This is defined according to the basic data The circuit of the unit immediately below the observation unit was defective and recorded.

In the embodiment of the present invention, the identification image on the surface of the mobile stage is spaced a certain distance from the positioning jig, and the distance is for the mobile stage to carry the circuit board to move arbitrarily, and the optical imaging unit can shoot To the recognition image.

In the embodiment of the present invention, the identification image will not be the same color as the surface of the mobile stage, and the difference between the front and rear states must be recognized when the rotation angle of the identification image is within 90 degrees, and the identification image is Non-single circular images, such as cross images, square images, triangular images.

In the embodiment of the present invention, the offset distance and angle of the identification image in the reference position image and the selected position image are compared, the image unit is converted into a size unit, and the actual movement of the circuit board is calculated. Angle and distance.

In the embodiment of the present invention, the basic information includes an image and a size of the circuit board, a distribution position, a size, and a quantity of the unit circuit.

The following is a description of specific embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various details in the description of the present invention can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the description for those familiar with this technology to understand and read, and are not intended to limit the limitations that the present invention can implement. Conditions, so it does not have technical significance, any structural modification, proportional relationship change, or size adjustment shall fall within the scope of the present disclosure without affecting the effects and objectives that can be achieved by the present invention. The technical content must be within the scope.

As shown in FIG. 1 and FIG. 2, it is a system block diagram and a three-dimensional schematic diagram of a circuit board for assisting array layout in the present invention to identify and record defect locations. The system includes: a working platform 11, an observation unit 12, an optical reading unit 13, a receiving unit 14, a display unit 15, an input unit 16, and an operation control unit 17. The present invention is used to adopt an array The typesetting circuit board is identified as shown in FIG. 2. The circuit board 2 is composed of a plurality of repeating unit circuits 21 arranged neatly in a sheet or strip shape. The system of the present invention can identify the During the process, the serial number of the unit circuit of the defective product can be recorded with digital data synchronously.

The working platform 11 includes a moving stage 111. The moving stage 111 can move in any horizontal direction without any longitudinal (Z-axis) offset. The moving stage 111 has an identification image 112 and at least one positioning jig 113 on the surface, and the positioning jig 113 is used for positioning the circuit board 2 against. The number, type, and location of the positioning fixture 113 are not limited to a single type in the figure, and only the structure for the circuit board 2 to be positioned or fixed can be used. The identification image 112 is used as a reference point for identifying whether the mobile stage 111 is rotated or moved. Therefore, in the present invention, the identification image 112 is not the same as the surface color of the mobile stage 111, and the identification image 112 is After the rotation, the difference between the front and rear positions can be identified, and the rotation angle is limited to 90 degrees. In this embodiment, the identification image 112 is a non-single circular image, such as a cross image, a square image, and a triangular image. In addition, the identification image 112 on the surface of the mobile stage 111 is spaced a distance from the positioning jig 113. The distance is for the mobile stage 111 to carry the circuit carrier 2 to move arbitrarily, and the optical imaging unit 13 can shoot. To the identification image 112.

The observation unit 12 is located directly above the work platform 11 for magnifying and observing the circuit board. In this embodiment, the observation unit 12 is one of an optical microscope or an electron microscope, and can clearly observe suspected defects at a high magnification. Position the image to determine whether it is correct or not. In addition, if the observation unit 12 is an electron microscope, the display unit 15 can also be used to assist the magnified display for easy observation.

The optical reading unit 13 is located above the work platform 11 and is used to capture the identification image 112. In this embodiment, the optical reading unit 13 is a digital camera or a digital video camera. The optical reading unit 13 is connected to the arithmetic control unit 17 and provides a captured image in a timely manner. When the mobile stage 111 carries the circuit board 2, in the initial state, an image can be captured by the optical reading unit 13 and defined as a reference position image. This may be an unused state, that is, the unit circuit 21 with the serial number 1 is directly below the observation unit 12.

The receiving unit 14 is used to receive basic data of the circuit board 2, and the basic data includes the image and size of the circuit board, the distribution position, size, number, and serial number of the unit circuit 21. In addition, the manner in which the circuit board 2 records a plurality of the unit circuits 21 is generally represented by a serial number. The receiving unit 14 can use a keyboard input method, or scan the 2D Code of the circuit board 2 to obtain relevant data and store it.

The display unit 15 is a display in this embodiment, and displays the distribution pattern of the plurality of unit circuits 21 of the circuit board 2 according to the basic information, such as a distribution image, the circuit board image, or a recording Good location images, etc. This section is mainly for the operator to know which unit circuits have identified good or bad products or whether they have been recorded.

The input unit 16 is used for inputting a click message. In this embodiment, the input unit 16 is a mouse, keyboard, or pedal input device, but it is not limited to this, and it can also be a push button that can trigger a signal. The input unit 16 is mainly used to notify the optical reading unit 13 to capture an image again, and to define the captured image as the selected position image at this time.

The calculation control unit 17 is connected to the optical imaging unit 13, the receiving unit 14, the display unit 15, and the input unit 16 to control the operation of each unit, receive the transmitted messages and data, and perform calculation and analysis. . For example, after receiving the click message from the input unit 16, the image captured by the optical imaging unit 13 at this time is defined as the click position image, and the reference position image and the identification image in the click position image are compared. The differences in image 113, such as the front-to-back position offset distance, offset angle, rotation angle, etc., are then converted from the pixel unit to the size unit, and the actual distance and angle of the circuit board 2 are converted. According to the receiving unit 14 provides The basic information of the conversion is that the unit circuit 21 is located under the square of the observation unit 12 at this time. It is defined that the unit circuit 21 is defective and recorded under the observation unit 12 at this time. In this way, the position, serial number, and quantity of the unit circuit 21 in the circuit board 2 as defective products can be obtained synchronously after identification.

Next, a description is given of the actual operation of the present invention:

As shown in Figure 2, it is also the initial state diagram. Place the circuit board 2 on the moving stage 111 against the positioning tool 113. At this time, the unit circuit 21 with the serial number 1 in the circuit board 2 has been adjusted directly below the observation unit 12, or The unit circuit 21 at the corner of the circuit board 2 is moved directly below the observation unit 12. At this time, the unit circuit 21 at this position can be regarded as the B1 position. At this time, the optical reading unit 13 captures the identification image 112 and defines it as the reference position image, where the position of the identification image 112 can be regarded as the C1 position.

As shown in FIG. 3, during the process of identifying the suspected defect of the circuit board 2, the operator can move the mobile stage 111 horizontally and in any direction. By observing the unit circuit 21 directly below the observation unit 12, it can be judged visually by human eyes. defect. If a defect is found, a click signal is input through the input unit 16, and at this time, the position of the unit circuit 21 directly below the center of the observation unit 12 can be regarded as B2. When the arithmetic control unit 17 receives the click message, it defines the image captured by the optical imaging unit 13 as the click position image, and the position of the identification image 112 can be regarded as the C2 position. Compare the difference between the reference position image and the selected image 112 in the identified image 112, that is, calculate the rotational displacement of the C1 position and the C2 position, convert the distance and angle that the circuit board 2 moves, and then calculate the B1 position The position of the B2 position is calculated, and based on the basic data of the circuit board 2 provided by the receiving unit 14, the unit circuit 21 immediately below the observation unit 12 at this time can be estimated and defined as a defect and recorded.

To sum up, the system for assisting the array typesetting circuit board identification and recording defect location in the present invention, during the operation, since the moving stage 111 can move in any direction horizontally, it is convenient for the operator to quickly move the circuit board 2 to the The observation unit 12 is enlarged and viewed directly below. During the process, the optical reading unit 13, the input unit 16, and the operation control unit 17 are used to synchronously convert and record the position of the defect, thereby improving the operation efficiency and digitizing related data to facilitate subsequent data. The output and packaging operations are carried out in accordance with the requirements of the patent application.

However, the above-mentioned embodiments merely illustrate the effectiveness of the present invention, but are not intended to limit the present invention. Any person skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. . In addition, the number of components in the above-mentioned embodiments is merely illustrative, and is not intended to limit the present invention. Therefore, the scope of protection of the rights of the present invention should be listed in the following patent application scope.

11‧‧‧Working Platform

111‧‧‧mobile carrier

112‧‧‧Identify the image

113‧‧‧Positioning fixture

12‧‧‧observation unit

13‧‧‧Optical Reading Unit

14‧‧‧Receiving unit

15‧‧‧display unit

16‧‧‧Input unit

2‧‧‧Circuit Board

21‧‧‧unit circuit

B1‧‧‧Location

B2‧‧‧Location

C1‧‧‧Location

C2‧‧‧Location

FIG. 1 is a block diagram of a system for assisting array typesetting of a circuit board to identify and record defect locations according to the present invention. FIG. 2 is a schematic perspective view of a system for assisting array typesetting to identify and record defect locations on a circuit board according to the present invention. FIG. 3 is a schematic diagram of the operation of the system for assisting array typesetting to identify and record defect locations on a circuit board. FIG. 4 is a block diagram of a conventional circuit board identification device.

Claims (8)

A system for assisting array typesetting circuit board identification and recording defect location, the circuit board is composed of a plurality of repeated unit circuits, the system includes: a working platform including a mobile stage, the surface of the mobile stage has a An identification image and at least one positioning jig for positioning the circuit board against the positioning; an observation unit located above the work platform to zoom in and observe the circuit board; an optical imaging unit located above the work platform Can capture the identification image, and define the mobile carrier to carry the image captured by the circuit board in the initial state as a reference position image; a receiving unit that receives basic information of the circuit board; a display unit based on the basic The data shows the distribution pattern of the multiple unit circuits of the circuit board; an input unit for inputting the click information; an arithmetic control unit connected to the optical imaging unit, the receiving unit, the display unit, and the input unit, When the arithmetic control unit receives the click message, the image captured by the optical imaging unit is defined as the click position image. Compare the difference between the reference position image and the identified image in the selected position image, and convert the circuit board's moving distance and angle. According to the basic data, the unit circuit immediately below the observation unit is defined as a defect and Be documented. The system for assisting array typesetting circuit board identification and recording defect position as described in the first patent application scope, wherein the identification image on the surface of the moving stage is spaced apart from the positioning jig, and the distance is provided for the moving stage After the circuit board is arbitrarily moved, the optical image capturing unit can capture the identification image. As described in item 1 of the scope of the patent application, the system for assisting array typesetting circuit board identification and recording defect locations, wherein the identification image will not be the same color as the surface of the moving stage, and the rotation angle of the identification image is 90 °. Within the range, it is still necessary to be able to identify the difference between the front and back status. The system for assisting array typesetting circuit board identification and recording defect position as described in the first patent application scope, wherein the offset distance between the reference position image and the selected position image is compared. And angle, perform image unit conversion size unit and calculate the actual angle and distance of the circuit board. As described in item 1 of the scope of the patent application, a system for assisting the layout of a printed circuit board of an array to identify and record the location of defects, wherein the basic information includes the image and size of the printed circuit board, the location, size, and quantity of the unit circuits. As described in item 1 of the scope of the patent application, the system for assisting the layout of the array board to identify and record the position of the defect, wherein the mobile stage can move in any horizontal direction without any longitudinal (Z-axis) offset. As described in item 1 of the scope of the patent application, the system for assisting the layout of the array board to identify and record the position of the defect, wherein the observation unit is an optical microscope or an electron microscope. As described in item 1 of the scope of the patent application, the system for assisting the layout of the array board to identify and record defect locations, wherein the input unit is a mouse or a pedal input.