JP2004221472A - Inspecting apparatus and method of film carrier tape for mounting electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve productivity without requiring any complex work and perform accurate sampling inspections, when performing such quality inspections as the electric disconnection, electric short, brokenness, protrusion, and pattern faultiness of the lead of each electronic-component mounting portion, in a film carrier tape for mounting electronic components. <P>SOLUTION: When inspecting electronic components by an inspecting apparatus, the electronic-component mounting portions are so stopped respectively in an inspecting position during a predetermined time while they are carried continuously to the inspecting position at a predetermined speed as to perform in the inspecting apparatus the inspection of whether the electronic components are faulty or not. When detecting a faulty component as the result of the inspection in the inspecting apparatus, the carriage of the film carrier tape is so stopped once in a faulty-component detecting position based on the input from a carriage controlling switch as to reinspect the faulty component in the faulty-component detecting position by the inspecting apparatus. After completing the reinspecting, based on the input from the carriage controlling switch, the electronic-component mounting portions are stopped again respectively in the inspecting position during the predetermined time while they are carried continuously to the inspecting position. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a TAB (Tape Automated Bonding) tape, a T-BGA (Tape Ball Grid Array) tape, a CSP (Chip Size Package) tape, an ASIC (Application Specification, Integrated Graphics, Integrated Graphics, Integrated Graphics, Integrated Graphics, Integrated Graphics and Integrated Circuits). (Electronic Component Mounting Film Carrier Tape) Inspection Apparatus for Electronic Component Mounting Film Carrier Tape and Electronic Component Mounting Film for Detecting Defects such as Wiring Patterns of (Chip Size Package) and the like (hereinafter, simply referred to as “electronic component mounting film carrier tape”) The present invention relates to a carrier tape inspection method.
[0002]
[Prior art]
With the development of the electronics industry, demand for printed wiring boards on which electronic components such as ICs (integrated circuits) and LSIs (large-scale integrated circuits) are mounted has been rapidly increasing. There is a demand for higher functionality, and as a mounting method of these electronic components, a mounting method using a film carrier tape for mounting electronic components such as a TAB tape, a T-BGA tape, an ASIC tape, a BGA, and a CSP has recently been adopted. . In particular, the importance thereof is increasing in the electronic industry using a liquid crystal display device (LCD), such as a personal computer, which is required to have a high definition, a low profile, and a small frame area of a liquid crystal screen.
[0003]
In such electronic component mounting film carrier tapes, the quality of the electronic component mounting film carrier tape has been inspected in appearance inspection, shipping inspection, etc. Inspection of a certain disconnection, short circuit, chipping, protrusion, defective solder resist, discoloration, etc. is carried out with a stereoscopic microscope using reflected light or transmitted light and visually inspected by human eyes.
[0004]
By the way, conventionally, in the inspection for inspecting such a film carrier tape for mounting electronic components, as shown in FIGS. 6A and 6B, when inspecting the film carrier tape 100 for mounting electronic components, For example, when the inspector presses a transport control switch provided near the inspection apparatus, the electronic component mounting units 102a to 102e are continuously transported to the inspection position and stopped.
[0005]
Then, in the stopped state, a visual inspection is performed on each of the electronic component mounting units 102a to 102e by using an inspection device such as a stereoscopic microscope, for example, for inspection items such as disconnection, short circuit, chipping, protrusion, defective solder resist, and discoloration. It is carried out.
In this case, as shown in FIG. 6B, the respective electronic component mounting units 102a to 102e are determined to be non-defective and defective, and the inspector is provided with a transport control switch (non-defective switch, non-defective) near the inspection apparatus. By pressing the non-defective switch, the electronic component mounting units 102a to 102e are sequentially transported.
[0006]
Such a cycle is repeatedly performed, and for example, a defect rate per reel around which the film carrier tape for mounting electronic components to be inspected is wound is calculated.
[0007]
[Patent Document 1]
JP 2000-193717 A
[Problems to be solved by the invention]
However, in such a conventional inspection, when the inspector presses the transport control switch, the transport and stop of the electronic component mounting units 102a to 102e are performed, so that the transport and stop times vary, and the inspection yield is reduced. And productivity will decline.
[0009]
In addition, since the inspector must operate the transport control switch for each of the electronic component mounting units 102a to 102e, complicated work is required and the time required for the inspection is lengthened. become.
The present invention performs a quality inspection of the film carrier tape for mounting electronic components, such as an electrical disconnection, a short circuit, a chip, or a pattern defect such as a protrusion of a lead of each electronic component mounting portion, in consideration of such a current situation. Inspection device for film carrier tape for mounting electronic components, which can perform accurate and accurate sampling inspection while improving productivity without requiring complicated work, and film carrier for mounting electronic components therefor An object of the present invention is to provide a method for inspecting a tape.
[0010]
[Means for Solving the Problems]
The present invention has been invented in order to achieve the problems and objects in the prior art as described above, and the electronic component mounting film carrier tape inspection device of the present invention has an electronic component mounting portion in the longitudinal direction. An inspection device for detecting a defect of a film carrier tape for mounting electronic components that is continuously arranged,
A transport drive for transporting the electronic component mounting film carrier tape in its longitudinal direction,
By stopping the transport of the transport driving device, the electronic component mounting film carrier tape is positioned at a predetermined position, and the electronic component mounting portion on the electronic component mounting film carrier tape that has entered a predetermined inspection position is moved. An inspection device for inspecting whether or not it is defective;
A transport control device that controls the transport of the transport drive device,
The transfer control device,
At the time of inspection by the inspection device, each of the electronic component mounting portions is continuously conveyed to the inspection position at a predetermined speed, stopped for a predetermined time, and inspected for defects in the inspection device. And is configured to control
As a result of the inspection in the inspection device, when a defective product is detected, based on an input from the transport control switch, the transport is temporarily stopped at the defective product detection position, and at the defective product detection position, in the inspection device, Control to recheck,
After the re-inspection is completed, the operation of the transport driving device is controlled so as to stop for a predetermined time while continuously transporting the electronic component mounting units again to the inspection position based on an input from the transport control switch. It is characterized by being constituted.
[0011]
Further, the inspection method of the electronic component mounting film carrier tape of the present invention is an inspection method for detecting a defect of the electronic component mounting film carrier tape in which the electronic component mounting portion is continuously arranged in the longitudinal direction,
The transport drive device transports the film carrier tape for mounting electronic components in its longitudinal direction,
By stopping the transport of the transport driving device, the electronic component mounting film carrier tape is positioned at a predetermined position, and the electronic component mounting portion on the electronic component mounting film carrier tape that has entered a predetermined inspection position is moved. Inspect whether it is defective or not
At the time of inspection by the inspection device, each of the electronic component mounting portions is continuously conveyed to the inspection position at a predetermined speed, stopped for a predetermined time, and inspected for defects in the inspection device. Do
As a result of the inspection in the inspection device, when a defective product is detected, based on an input from the transport control switch, the transport is temporarily stopped at the defective product detection position, and at the defective product detection position, in the inspection device, Re-examine,
After the completion of the re-inspection, the electronic component mounting units are stopped again for a predetermined time while being continuously transported to the inspection position again based on an input from the transport control switch.
[0012]
With this configuration, the transport control is automatically performed by the transport control device so that the transport is stopped at a predetermined speed while being transported at a predetermined speed. When performing a quality inspection such as a pattern defect such as a short circuit, a chip, or a protrusion, a complicated operation is not required, and the inspection can be performed continuously.
[0013]
In addition, when a defective product is detected as a result of the inspection, the transport can be temporarily stopped at the defective product detection position and re-inspected based on an input from the transport control switch, thereby improving the inspection accuracy. .
Therefore, it is possible to improve the productivity and to carry out accurate and accurate sampling inspection.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments (examples) of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an inspection device for a film carrier tape for mounting electronic components according to the present invention.
As shown in FIG. 1, reference numeral 10 denotes an inspection device for a film carrier tape for mounting electronic components according to the present invention.
[0015]
As shown in FIG. 1, an inspection device 10 for a film carrier tape for mounting electronic components (hereinafter, simply referred to as an “inspection device 10”) includes a feeding device 20, an inspection unit 30, and a winding device 50. ing.
An electronic component mounting film carrier tape (hereinafter, simply referred to as a “film carrier tape”), on which a manufacturing process is completed, is wound around the feeding device 20 via a spacer S. The reel R is mounted on the delivery drive shaft 22. Then, the drive motor (not shown) rotates the feed drive shaft 22 so that the film carrier tape T is fed out from the reel R together with the spacer S, and is supplied to the inspection unit 30 via the guide roller 21. It has become.
[0016]
When the film carrier tape T supplied to the inspection unit 30 passes between the back tension gear 32 and the drive gear 34, the drive of the drive gear 34 is temporarily stopped, and the feeding of the film carrier tape T is stopped. At the same time, the film carrier tape T is accurately positioned at a predetermined position (pitch-fed) by the reverse rotation of the back tension gear 32 which engages with the sprocket hole of the film carrier tape T. That is, the drive of the drive gear 34 is temporarily stopped, and the feeding of the film carrier tape T is stopped.
[0017]
In this case, the control in this case is performed by controlling the rotation of the drive gear 34 by controlling an internal pulse caused by the rotation of a pulse motor which is a drive mechanism for driving the drive gear 34. In the drawing, reference numerals 31 and 33 denote pressing rollers for pressing the film carrier tape T between these gears.
As shown in FIG. 1, the inspection unit 30 performs a quality inspection such as a shipping inspection and an appearance inspection such as a disconnection, a short circuit, a chip, or a protrusion by using reflected light or transmitted light. A microscope 36 for visual inspection is disposed.
[0018]
As described above, the film carrier tape T in which the defect of the film carrier tape T is detected by the inspection unit 30 passes through the guide roller 42 and is supplied to the next winding device 50.
As shown in FIG. 1, the film carrier tape T supplied to the take-up device 50 is wound around a reel R mounted on a take-up drive shaft 52 via a guide roller 42 by a drive motor (not shown). As the take-up drive shaft 52 rotates, the film carrier tape T is taken up.
[0019]
At this time, the spacer S fed from the reel R of the feeding device 20 is supplied to the reel R of the winding device 50 via the guide rollers 56 and 57 and is interposed between the film carrier tapes. To protect the film carrier tape from being damaged.
In the inspection device 10, the film carrier tape T wound on the reel R is supplied from the delivery device 20 and then supplied to the inspection unit 30 via the guide roller 21.
[0020]
Similarly, the film carrier tape T that has been inspected by the inspection unit 30 is guided through the guide roller 42, and then is moved between the guide roller 42 and the reel R of the winding device 50. Due to its own weight, T hangs down by a certain length, and tension is applied to the film carrier tape T by this own weight, and the film carrier tape T is wound around the reel R of the winding device 50.
[0021]
FIG. 2 is a schematic block diagram showing a control mechanism of the inspection device 10 of the present invention.
As shown in FIG. 2, an input device 74, a display device 76, an inspection unit 30, and a drive unit 78 are respectively connected to a CPU (central processing unit) 80 by an input / output control unit 72. It is connected. The storage unit 82 is connected to the CPU 80.
[0022]
The input device 74 is an input device such as a keyboard, and is used to input specific information such as the type of the film carrier tape T, a lot number, a predetermined transport speed, and a predetermined stop time to the control device 70.
Further, the drive unit 78 is a pulse motor or the like, which is a drive mechanism for driving the drive gear 34, the conveyance of which is controlled based on the data processed by the CPU 80 based on these values. The storage unit 82 is a storage device such as a RAM for temporarily storing such information.
[0023]
The inspection apparatus 10 of the present invention configured as described above is operated as shown in the flowchart of FIG.
That is, in step S1, the input device 74 inputs a predetermined transport speed and a predetermined stop time.
Then, in step S2, the drive unit 78 is controlled by the control device 70, so that the film carrier tape T is transported at a predetermined speed and stopped for a predetermined time.
[0024]
That is, as shown in FIGS. 4A and 4B, at the time of inspection of the film carrier tape T, for example, each of the electronic component mounting units 2 a to 2 e is controlled by the control unit 70 by the driving unit 78, and It is automatically conveyed to the inspection position continuously at a predetermined speed, and is stopped at the inspection position for a predetermined time.
Then, in step S3, during the stop of the predetermined time at the inspection position, the inspection unit 30 of the film carrier tape applies an inspection device such as a stereo microscope to each of the electronic component mounting units 2a to 2e. Inspection is performed for inspection items such as disconnection, short circuit, chipping, protrusion, defective solder resist, and discoloration.
[0025]
Next, in step S4, the film carrier tape inspection unit 30 determines whether the product is defective or non-defective.
As a result of the inspection by the inspection unit 30, if the inspection result is good, in step S5, the process returns to step S2 due to the elapse of the preset stop time, and the continuous conveyance and the stop to the inspection position are continued. It has become. That is, for example, when the stop time set in advance is 5 seconds, when the inspection is completed in 3 seconds and it is determined that the product is non-defective, the transport of the film carrier tape is stopped for 5 seconds, and the process returns to step S2. The continuous conveyance and the stop to the inspection position are continued.
[0026]
The number of non-defective products is automatically counted and stored in the storage unit 82.
As a result of the inspection by the inspection unit 30, if the electronic component mounting unit 2e is determined to be defective in step S6, for example, as shown in FIG. Presses a transport control switch (not shown), which is a defective switch provided near the inspection device, so that the transport of the film carrier tape T is stopped at the defective position 2e. I have.
[0027]
Then, in step S7, in the inspection section 30 of the film carrier tape, the electronic component mounting section 2e at the defect detection position is again subjected to, for example, disconnection, short-circuit, chipping by an inspection apparatus such as a stereoscopic microscope. Re-inspection is performed on inspection items such as protrusions, solder resist defects, and discoloration.
Then, in step S8, the inspection section 30 of the film carrier tape determines whether it is defective or non-defective.
[0028]
Then, as shown in FIG. 5B, when the electronic component mounting portion 2e at the defective detection position is determined to be good by re-inspection, in step S9, the inspector selects a good product switch of the transport control switch. By pressing (not shown), the process returns to step S2 again, and the drive unit 78 is controlled by the control device 70, and is automatically conveyed to the inspection position continuously at a predetermined speed, and at the inspection position at a predetermined speed. The time is stopped.
[0029]
In this case, the input from the input device 74 including the transport control switch, which is a non-defective switch, cancels the number of defective products in the electronic component mounting unit 2e determined to be defective in the storage unit 82 in step S6. After the number of non-defective products is calculated by the CPU 80, it is automatically counted and stored in the storage unit 82.
On the other hand, as shown in FIG. 5C, when the electronic component mounting portion 2e located at the defect detection position is determined to be defective by re-inspection, the inspector determines in step S10 that the transport control switch has failed. By pressing a non-defective switch (not shown), the defect is determined, and the process returns to step S2, where the driving unit 78 is controlled by the control device 70, and is automatically continuously at the inspection position at a predetermined speed. It is transported and stopped at the inspection position for a predetermined time. The number of defective products is calculated automatically by the CPU 80 based on an input from the input device 74 including the transport control switch, which is a defective product switch, and then automatically counted and stored in the storage unit 82.
[0030]
Note that a mark such as a punch hole may be formed on a defective mounting portion by a defective marking device (not shown) based on the stored information.
Such a cycle is repeatedly performed, for example, the defect rate per reel around which the film carrier tape for mounting an electronic component to be inspected is calculated, and is displayed on, for example, the display device 76 or a printing device (not shown). It is supposed to be.
[0031]
In this embodiment, only the defect rate per reel around which the film carrier tape for mounting electronic components to be inspected is wound is calculated. It is also possible to input and display.
Further, the above-described predetermined transport speed and stop time are not particularly limited, and may be determined as appropriate.
[0032]
Further, in this embodiment, the electronic component mounting film carrier tape in which one electronic component mounting portion is continuously arranged has been described, but a so-called multiple electronic component mounting portion in which the electronic component mounting portions are also arranged in the width direction of the film carrier tape is described. The present invention can also be applied to a multi-layered film carrier tape for mounting electronic components, which is called “individual picking”.
As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to this. In the above-described embodiment, the microscope 36 for performing the inspection in the inspection unit 30 by human eyes is provided. However, various changes can be made without departing from the object of the present invention, such as application to automatic inspection by automatic recognition using a CCD camera, a line sensor, or the like.
[0033]
【The invention's effect】
According to the present invention, the conveyance control is automatically performed by the conveyance control device so that the conveyance is stopped at the predetermined speed while the conveyance is performed at the predetermined speed. When performing a quality inspection for a defective pattern such as a chip or a projection, a complicated operation is not required, and the inspection can be performed continuously.
[0034]
In addition, when a defective product is detected as a result of the inspection, the transport can be temporarily stopped at the defective product detection position and re-inspected based on an input from the transport control switch, thereby improving the inspection accuracy. .
Therefore, the present invention is an extremely excellent invention which has many effects, such as an improvement in productivity and an accurate and accurate sampling inspection.
[Brief description of the drawings]
FIG. 1 is a front view of an inspection device for a film carrier tape for mounting electronic components according to the present invention.
FIG. 2 is a schematic block diagram showing a control mechanism of the inspection device for a film carrier tape for mounting electronic components of the present invention.
FIG. 3 is a flowchart for explaining the operation of the inspection device for a film carrier tape for mounting electronic components according to the present invention.
FIG. 4 is a schematic diagram illustrating the operation of the inspection device for a film carrier tape for mounting electronic components according to the present invention.
FIG. 5 is a schematic diagram illustrating the operation of the inspection device for a film carrier tape for mounting electronic components according to the present invention.
FIG. 6 is a schematic diagram illustrating a conventional method for inspecting a film carrier tape for mounting electronic components.
[Explanation of symbols]
2a to 2e Electronic component mounting unit 10 Inspection device 20 Sending device 21 Guide roller 22 Drive shaft 30 Inspection unit 32 Back tension gear 34 Drive gear 36 Microscope 42 Guide roller 50 Winding device 52 Drive shaft 56 Guide roller 70 Control device 72 Output control unit 74 Input device 76 Display device 78 Drive unit 82 Storage unit 100 Electronic component mounting film carrier tapes 102a to 102e Electronic component mounting unit R Reel S Spacer T Film carrier tape

Claims (2)

An inspection device for detecting a defect of the electronic component mounting film carrier tape in which the electronic component mounting portion is continuously arranged in the longitudinal direction,
A transport drive for transporting the electronic component mounting film carrier tape in its longitudinal direction,
By stopping the transport of the transport driving device, the electronic component mounting film carrier tape is positioned at a predetermined position, and the electronic component mounting portion on the electronic component mounting film carrier tape that has entered a predetermined inspection position is moved. An inspection device for inspecting whether or not it is defective;
A transport control device that controls the transport of the transport drive device,
The transfer control device,
At the time of inspection by the inspection device, each of the electronic component mounting portions is continuously conveyed to the inspection position at a predetermined speed, stopped for a predetermined time, and inspected for defects in the inspection device. And is configured to control
As a result of the inspection in the inspection device, when a defective product is detected, based on an input from the transport control switch, the transport is temporarily stopped at the defective product detection position, and at the defective product detection position, in the inspection device, Control to recheck,
After the re-inspection is completed, the operation of the transport driving device is controlled so as to stop for a predetermined time while continuously transporting the electronic component mounting units again to the inspection position based on an input from the transport control switch. An inspection device for a film carrier tape for mounting electronic components, characterized in that the inspection is performed. An inspection method for detecting a defect of the electronic component mounting film carrier tape in which the electronic component mounting portion is continuously arranged in the longitudinal direction,
The transport drive device transports the film carrier tape for mounting electronic components in its longitudinal direction,
By stopping the transport of the transport driving device, the electronic component mounting film carrier tape is positioned at a predetermined position, and the electronic component mounting portion on the electronic component mounting film carrier tape that has entered a predetermined inspection position is moved. Inspect whether it is defective or not
At the time of inspection by the inspection device, each of the electronic component mounting portions is continuously conveyed to the inspection position at a predetermined speed, stopped for a predetermined time, and inspected for defects in the inspection device. Do
As a result of the inspection in the inspection device, when a defective product is detected, based on an input from the transport control switch, the transport is temporarily stopped at the defective product detection position, and at the defective product detection position, in the inspection device, Re-examine,
After the re-inspection is completed, based on an input from the transport control switch, the electronic component mounting section is again continuously transported to the inspection position, and is stopped for a predetermined time, wherein the electronic component mounting film is stopped. Inspection method of carrier tape.

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