JPH0590364A - Magnifying recognition apparatus - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a magnifying confirmation device with an indicating function used for confirming an inspection result of a printed circuit board or the like with a magnifying glass. The purpose is to reduce. [Arrangement] A light projecting device 6 for pointing a defective portion with light in an enlarged image obtained by a stereoscope 1 and a coordinate controller 5 for controlling the light projecting device 6 to point a defective portion with light are provided. When there are a plurality of defective points in the same visual field, the coordinate controller 5 sequentially indicates the defective points by light, and the XY stage controller 7 is configured not to move during this period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion confirmation device,
In particular, it relates to a magnifying confirmation device with an indication function used for confirming the inspection results of printed boards with a magnifying glass (stereoscope).

After mounting an electronic component such as a semiconductor device on a printed (wiring) board by soldering, the result of the soldering is inspected by using an X-ray or optical soldering inspection device. Then, as a result of this inspection, it is visually confirmed whether or not the defective portion is a true defect in an enlarged state using an enlargement confirmation device.

[0003]

2. Description of the Related Art FIG. 6 shows an outline of confirmation work by a conventional enlargement confirmation device. In FIG. 6, the inspection result of the inspection device 12 is stored in the inspection result file 9 as the position data of the defective portion on the printed board which is the confirmation object 3. The position data is represented by position coordinates (X, Y) composed of an X coordinate and a Y coordinate. On the other hand, for the confirmation work, the printed board is placed at a predetermined position on the XY stage 4 of the enlargement confirmation device. In this state, the position data of the inspection result file 9 is input to the controller 8'such as a personal computer. The controller 8 ′ moves the XY stage 4 via the XY stage controller 7 to move the defective portion indicated by the position data just below the stereoscope (magnifying glass) 1. As a result, a magnified image is obtained, and the inspector visually confirms whether or not the defect is true. If it is a true defect,
The inspector corrects the defective part.

[0004]

In the above-mentioned prior art, the magnified image obtained by the stereoscope 1 is
As shown in FIG. 7, the defective portion was always controlled so as to be located at the center of the image. That is, the XY stage 4 was moved so that the defective portion indicated by the position data was located at the center of the field of view of the magnifying glass.

However, when a plurality of parts (chip parts or the like) or a plurality of leads (leads such as IC) are present in the same field of view and the plurality of parts are defective, it is possible to confirm at a time. Despite this, the XY stage 4 moves each time so that the target defective portion comes to the center of the visual field. Therefore, there is a problem that the work efficiency is poor because the XY stage 4 is always moved. In addition, since the next defective portion, which is the object of visual inspection, moves within the same field of view, there is a problem that the inspector inevitably pays attention to this and the degree of eye fatigue increases.

It is an object of the present invention to provide an enlarged confirmation device with an indicating function, which is capable of improving the efficiency of confirmation work and reducing the degree of eye fatigue of an inspector.

[0007]

FIG. 1 is a principle block diagram of the present invention, showing an enlargement confirmation device according to the present invention. In FIG. 1, an XY stage 4 mounts a printed board or the like, which is the confirmation target 3. This confirmation object 3 is inspected by an inspection device in advance, and the inspection result file 9 stores data as a result of the defect. Based on this data, the XY stage controller 7 controls the XY stage 4 so that the defective portion moves to a predetermined position, that is, directly below the stereoscope 1. The stereoscope 1 obtains an enlarged image of a defective portion at a predetermined position for visual confirmation.

In this enlarged image, the light projecting device 6 indicates (marks) the defective portion, which is the object of confirmation at that time, with light (visible light). The coordinate controller 5 controls the light projecting device 6 so that the light from the light projecting device 6 indicates the defective part based on the data on the defective part. In particular, the coordinate controller 5 controls the light projecting device 6 so as to sequentially indicate a plurality of defective spots by light when a plurality of defective spots exist in one enlarged image. During this time, the XY stage controller 7
Controls the XY stage 4 (that is, the confirmation target 3) so as not to move.

[0009]

2 is an explanatory view of the operation of the present invention, which is to be compared with FIG. An enlarged image obtained by the stereoscope 1 is as shown in FIG. That is, first, one defective portion, for example, the electronic component P1 is moved by the XY stage controller 7 to a predetermined position, for example, the center position of the enlarged image. In this state, the coordinate controller 5 causes the light projecting device 6 to project. The light from indicates that it is the current confirmation target (upper part of the figure). At this time, there is another defective electronic component P2 in the same magnified image (the same field of view of the stereoscope).

When the inspector finishes the confirmation, the next confirmation target P2
When the instruction to confirm is input, the light from the light projecting device 6 is moved by the control of the coordinate controller 5 to instruct the electronic component P2 to be confirmed at the next time point (the lower part of the figure).
During this time, the XY stage controller 7
-The Y stage 4, that is, the confirmation target object 3 is not moved.

As a result, when a plurality of defective portions are present in the same magnified image, the XY stage 4 is not moved and the working efficiency is improved. Further, since the defective portion does not move within the same visual field, the degree of eye fatigue of the inspector can be reduced. Furthermore, since the operator can instruct the operator what to check at that point by light, the burden on the operator can be reduced in this respect as well.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a general control device 8 such as a personal computer converts data on a defective portion in an inspection result file 9 into more optimal XY stage control data and light projecting device control data. And each X
-Send to Y stage controller 7 and coordinate controller 5. The data on the defective portion is obtained in advance by inspecting the confirmation object 3 with its inspection device (not shown). The data is sent to the XY stage controller 7 and the coordinate controller 5 by the inspector pressing down the test step switch 11 of the console in a predetermined order for each defective portion. The depression of the test step switch 11 corresponds to the next target instruction in FIG.

In addition, the integrated control device 8 confirms (diagnoses).
The result of is input. This input is performed by, for example, pressing a predetermined button on the console to determine whether or not the data indicating the defective portion is correct. In the case of pressing down the No button, the (defective) part to be confirmed is truly defective. On the other hand, in the case of pressing the normal button (or there is no pressing of the reject button), it means that the (defective) location to be checked was not defective.

This confirmation result is used in the next step, for example, the correction step. That is, the data in the inspection result file 9 is corrected based on the confirmation result so as to show only the true defective portion. Further, the confirmation target object 3 is corrected based on the corrected data.

The data in the inspection result file 9 has a form as shown in FIG. That is, a part number, a model, and a position coordinate are stored for each electronic part which is a defective portion on the printed board which is the confirmation object 3. The electronic components are arranged according to the inspection order in the inspection device, for example. The part number is
It is the number of the electronic component in the printed board (ID in the printed board) and is unique. The model name is the product name given by the manufacturer. These are for modification of the printed board. The position coordinates consist of XY stage coordinates and light pointing coordinates. The XY stage coordinates represent the position of the XY stage 4 when confirming the defective portion or the electronic component (when forming an enlarged image). The light pointing coordinate represents the position of the light pointing in the enlarged image. Then, the former is sent to the XY stage controller 7, and the latter is sent to the coordinate controller 5.

In FIG. 3, the confirmation target (electronic component) P
XY stage coordinates of 1, P2 and P3 are (X, Y)
= (X1, y1), but the light pointing coordinates are different. Therefore, these confirmation targets P1, P2 and P3
The positional relationship in the enlarged image (field of view) is as shown in FIG.

That is, first of all, when the XY stage controller 7 is given the XY stage coordinates (x1, y1), the coordinates (x1, y1), that is, the confirmation target P.
The XY stage 4 is controlled so that 1 is located at the center of the enlarged image. Since the XY stage coordinates of the confirmation objects P2 and P3 are also the same, the X-axis coordinate is maintained during the confirmation.
The Y stage 4 is controlled so as not to move.

On the other hand, when the coordinate controller 5 is given the light designated coordinates (x1, y1), the coordinates (x1, y1), that is, the confirmation target P1 is irradiated with the light by the coordinate controller 5,
The light projecting device 6 is controlled. After that, when the inspector pushes down the test step switch 11, the output of the counter 10 becomes +1.
Only counted up. As a result, the product number in the inspection result file 9 is incremented by +1 in the inspection order, and the data of the confirmation target P2 is sent out via the integrated control device 8. Since the coordinate controller 5 is given new light designation coordinates (x2, y2), it optically designates the confirmation target P2. At this time, as described above, since the XY stage coordinates are not changed, the XY stage 4 does not move.

The above-mentioned data, especially the position coordinates, are created by the general control unit 8 at the beginning of the confirmation work. The data that shows the defective points obtained from the inspection equipment is
For example, the X coordinate and the Y coordinate of each defective portion are the same as the light pointing coordinates in FIG. Therefore, the integrated control device 8 uses these data as the light indication coordinates as they are. Next, the integrated control device 8 checks whether or not there is another confirmation target (defective portion) in the visual field when one confirmation target, for example, P1 is the center of the visual field (enlarged image). For example, when there are other confirmation objects P2 and P3 as shown in FIG. 2, the XY stage coordinates of these confirmation objects P1 to P3 are set to the coordinates (x1, y1) of the confirmation object P1 placed in the center of the visual field. Unify.

Note that defining the XY stage coordinates in this way defines the field of view of the stereoscope 1. The XY stage coordinates are calculated so that the number of visual fields (enlarged images) by the stereoscope 1 is reduced (the movement number of the XY stage 4 is reduced) as much as possible. The product numbers to be confirmed within the same field of view are continuous.

FIG. 4 shows an optical instruction. The light projecting device 6 mainly includes a light source 61, XY control mirrors 62 and 63, and mirror driving units 64 and 65. When the coordinate controller 5 receives the light-instructed coordinates from the general controller 8, the coordinate controller 5 controls the mirror driving units 64 and 65 using the light-instructed coordinates to control the directions of the XY control mirrors 62 and 63.
As a result, the light from the light source 61 such as a laser diode strikes (indicates) the defective portion of the confirmation target object 3 on the XY stage 4 by the half mirror 2 via the XY control mirrors 62 and 63. Therefore, in the visual field of the stereoscope 1, through the half mirror, the confirmation object 3
A composite image of the light and the pointing light is obtained.

Although the coordinate controller 5 controls the entire light projecting device 6, for example, the color of the light from the light source 61 may be changed according to the content of the defect. In this case, as the data of the inspection result file 9, by storing the defect contents for each defective part, it is possible to instruct the confirmation target part and its content at the same time.

FIG. 5 shows an enlargement confirmation processing flow. In step 1, the integrated control device 8 performs the processing necessary for the subsequent processing in addition to the processing for converting the data of the inspection result file 9 into the form shown in FIG. In step 2, the integrated control device 8 reads the data of one defective portion from the inspection result file 9, sends it to the XY stage controller 7 and the coordinate controller 5 after conversion. In step 3, the X-Y stage controller 5 controls the X-Y stage controller 5.
-Y stage 4 moves to a position according to the data.
In step 4, under the control of the coordinate controller 5, the light projecting device 6 optically indicates a position corresponding to the data.

As described above, the magnified image including the light indicating the confirmation target is obtained in the stereoscope 1, and the inspector confirms this. Then, input the confirmation result with the right / wrong button and then push down the test step switch.

In response to this, in step 5, the integrated control device 8 checks whether the correct / incorrect button is pressed. If the correct button is pressed, it is not a defect, so in step 6, the general controller 8 deletes the corresponding data from the inspection result file 9.
If the No button is pressed, it is defective and the integrated control device 8 records it in a file in step 7.

Next, in step 8, the integrated control device 8 checks whether or not another defective portion exists in the same visual field. If it exists, step 4 and subsequent steps are repeated, and if it does not exist, step 2 and subsequent steps are repeated. Here, the determination of the presence or absence of a defective portion in the same visual field is not actually performed during the confirmation processing. The result of this determination is created in advance as visual field data by the integrated control device 8 in step 1 and is held in an appropriate file in a table format. The field-of-view data is set to represent, for example, the number of confirmation objects (defective points) existing in the same field of view for each rated field. Then, in step 8, the total control device 8 refers to the visual field data of the visual field, and if the visual field data is "1", the process returns to step 2, and if the visual field data is "2" or more, only "-1" is obtained. Count down and return to step 4. Then, after performing confirmation processing for all fields of view,
The process ends.

[0027]

As described above, according to the present invention,
In the enlargement confirmation device, the confirmation target is optically indicated and
By moving only the optical instruction without moving the XY stage when there are multiple confirmation objects in the same visual field,
The work efficiency can be improved by omitting the movement of the XY stage, and the eye fatigue of the inspector can be reduced because the confirmation target does not move within the same visual field.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is an explanatory view of the operation of the present invention.

FIG. 3 is an explanatory diagram of inspection data.

FIG. 4 is an explanatory diagram of a light instruction.

FIG. 5 is an enlarged confirmation processing flow.

FIG. 6 is an explanatory diagram of a conventional technique.

FIG. 7 is a diagram illustrating a problem of the conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stereoscope 2 Half mirror 3 Object to be confirmed 4 XY stage 5 Coordinate controller 6 Projector 7 XY stage controller 8 Total control device 8'Controller 9 Inspection result file 10 Counter 11 Test step switch 12 Inspection device 61 Light source 62,63 XY control mirror 64,65 Mirror drive unit

Claims (3)

[Claims] 1. An X-for mounting a confirmation object (3).
A Y stage (4), an inspection result file (9) for storing data on a defective portion of the confirmation object (3), and based on the data, the defective portion is moved to a predetermined position. X-Y that controls the XY stage (4)
A magnifying confirmation device comprising a Y stage controller (7) and a stereocorp (1) for obtaining a magnified image of a defective portion at a predetermined position, for indicating the defective portion by light in the magnified image. Enlargement confirmation comprising: a light projecting device (6); and a coordinate controller (5) for controlling the light projecting device (6) so that the light indicates the defective portion based on the data. apparatus. 2. The coordinate controller (5), when there are a plurality of defective parts in one magnified image,
The light projecting device (6) is controlled so as to sequentially indicate the plurality of defective points by light, and during this time, the XY stage controller (7) controls the XY stage (4).
The control is performed so as not to move.
Enlargement confirmation device described. 3. The data includes a first position coordinate representing a position of the XY stage (4) for each defective portion,
A second position coordinate representing a position indicated by the light, and the XY stage controller (7) controls the XY stage (4) by the first position coordinate, and the coordinate controller ( The magnifying confirmation apparatus according to claim 1 or 2, wherein 5) controls the light projecting device (6) according to the second position coordinates.