JP2006108503A - Method for sticking adhesive tape and apparatus using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive tape sticking method and an apparatus capable of accurately sticking an adhesive tape to a semiconductor wafer. <P>SOLUTION: A protection tape supplied to the surface of a wafer W sucked and held by a holder is stuck to the surface of the wafer W while depressing the protection tape by a sticking roller, and simultaneously the surface height of the protection tape stuck to the surface of the wafer W is detected (step S3). The detection result is compared with a reference value of previously determined surface height (step S4). When both the values do not coincide with each other, the protection tape is peeled off, a foreign substance or the like existing on an interface between the wafer W and the adhesive surface is removed (step S5) and then a new protection tape is stuck to the surface of the wafer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an adhesive tape attaching method for attaching an adhesive tape to the surface of a work and an apparatus using the same, and in particular, for attaching an adhesive tape for protection on the surface of a semiconductor wafer before back grinding and dicing The present invention relates to a technique for accurately attaching a supporting adhesive tape to a back surface of a semiconductor wafer when the semiconductor wafer is held on a ring-shaped frame before processing.

  As a means of thinning a semiconductor wafer (hereinafter simply referred to as “wafer”), the back surface of the wafer is processed using a mechanical method such as grinding or polishing, or a chemical method using etching, and the thickness is reduced. It is thin. In addition, when processing a wafer using these methods, a protective adhesive tape (hereinafter simply referred to as “protective tape”) is attached to the surface of the wafer in order to protect the wafer surface on which the wiring pattern is formed. It is done.

  In addition, before dicing the wafer after thin processing, in order to hold the wafer on the ring-shaped frame, a supporting pressure-sensitive adhesive tape (hereinafter simply referred to as “supporting pressure-sensitive adhesive tape”) is attached to the ring-shaped frame. And a wafer in which the wafer is integrated (see, for example, Patent Document 2).

  Specifically, when a wafer is transported to the apparatus, placed and held on a holding table, and alignment is completed, a belt-like protective tape is supplied onto the wafer surface and wound around a sticking roller. The protective tape is affixed to the wafer surface while being pressed. The protective tape affixed to the surface of the wafer is cut into a substantially wafer shape by the cutter blade of the protective tape cutting portion.

  After that, inspect whether foreign matter or bubbles are generated at the interface between the surface of the wafer to which the protective tape is attached and the protective tape, and take out a predetermined number of wafers after the protective tape is applied and individually deployed An operator uses a device to manually inspect.

  As a result of the inspection, wafers in lots that do not generate foreign matters are transported to the wafer mount manufacturing process, and are held and integrated with the ring-shaped frame from the back surface via the supporting adhesive tape. The mount frame produced by integrating the wafer and the ring-shaped frame is inspected for foreign matter or the like on the interface between the wafer back surface and the supporting adhesive tape. That is, a predetermined number of mount frames are taken out and an operator manually inspects them using an inspection device provided individually.

As a result of the inspection, the mount frame in which no foreign matter is generated is conveyed to the next process and subjected to dicing. Each diced chip is picked up and conveyed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 1-158746 Japanese Patent Laid-Open No. 10-233429

  However, the conventional adhesive tape application method has the following problems.

  In other words, after the protective tape or supporting adhesive tape has been attached to the wafer surface, the operator takes out a predetermined number of wafers from the attaching device and inspects for the occurrence of foreign matter using an individual inspection device. Have not been inspected. Therefore, a wafer on which foreign matter or the like is generated is transferred to a subsequent process. For example, when the back process is a back grinding process, the surface of the protective tape is not flattened due to foreign matter or the like, the surface is adsorbed and held in a state where the surface height varies, and the back surface of the wafer is ground. As a result, there is a problem that the thickness of the wafer varies.

  Further, when the subsequent process is a dicing process, the sticking of the supporting adhesive tape to the back surface of the wafer becomes uneven due to the generation of foreign matter or the like. As a result, there is a problem that, if the supporting adhesive tape at the cut portion of the wafer is not in close contact during dicing, the cut chips are scattered or damaged.

  In addition, since the operator transports the occurrence of foreign matter to an individual inspection device and inspects it manually, there is a disadvantage that the work efficiency is lowered.

  In addition, for wafers and mount frames with protective tape on which foreign matter has been affixed, the operator removes the protective tape by hand to correct it. There are also problems such as damage.

  This invention is made in view of such a situation, and provides the adhesive tape sticking method which can stick an adhesive tape on the surface of workpieces, such as a semiconductor wafer, and an apparatus using the same. Is the main purpose.

  The present invention has the following configuration in order to achieve the above object.

1st invention is the adhesive tape sticking method which affixes the said adhesive tape on the surface of a workpiece | work, pressing the non-adhesive surface of an adhesive tape with a sticking member,
A first step of applying the adhesive tape to the surface of the work while pressing the non-adhesive surface of the belt-like adhesive tape with the application member;
A second step of detecting foreign matter or / and bubbles present at the interface between the surface of the workpiece to which the adhesive tape is attached and the adhesive surface of the adhesive tape;
A third step of peeling off the adhesive tape when foreign matter or / and bubbles are detected from the interface between the two members in the second step;
A fourth process of cutting the adhesive tape affixed to the work into a predetermined shape after performing the first process to the third process at least once for the work from which the adhesive tape has been peeled;
It is provided with.

  (Function / Effect) According to this method, after the strip-shaped adhesive tape is attached to the surface of the workpiece, foreign matter present at the interface between the surface of the workpiece attached with the adhesive tape and the adhesive surface of the adhesive tape or / and Air bubbles are detected. When foreign matter or the like is present at the interface between the two members, the adhesive tape attached to the workpiece is peeled off, and a new adhesive tape is attached to the workpiece from which the adhesive tape has been peeled off at least once. Thereafter, the belt-like adhesive tape is cut into a predetermined shape.

  That is, when foreign matter is present at the interface between the two members, the adhesive tape can be removed to remove foreign matter from the surface of the workpiece or to remove bubbles that have entered the interface. It can be attached in a state of being flush with and in close contact with the workpiece.

  In the above-described method, the detection of foreign matters or bubbles / bubbles is performed when, for example, the reference value of the surface height determined in advance from the thickness of the workpiece and the thickness of the adhesive tape and when the adhesive tape is applied to the workpiece to be applied. It is preferable to compare the measured value of the surface height of the pressure-sensitive adhesive tape and determine whether or not both values match. According to this method, the variation in the height of the adhesive tape can be detected, and foreign matters or / and bubbles present at the interface between both members can be easily detected.

  Further, the detection of foreign matter or / bubbles is preferably performed by photographing the surface of the work to which the adhesive tape is attached and detecting foreign matter or / and bubbles by image processing from the acquired image data. According to this method, it is possible to easily recognize the presence of foreign matter or bubbles from the image data of the photographed workpiece surface.

  In addition, the semiconductor wafer is mentioned as the workpiece | work of the sticking target of an adhesive tape, for example. The following cases are examples of attaching the adhesive tape to the semiconductor wafer. When sticking a protective adhesive tape on the surface of a semiconductor wafer, and when sticking a supporting adhesive tape across the back surface of the semiconductor wafer and the ring frame so that the semiconductor wafer is held at the center of the ring frame It is.

  According to this method, since the protective tape is attached to the semiconductor wafer in a flush and intimate manner, the thickness of the semiconductor wafer does not vary even if the back surface is back-grinded. In addition, since the supporting adhesive tape is affixed to the entire back surface of the semiconductor wafer held on the ring frame, the chips are not scattered or damaged during the dicing process.

6th invention is the adhesive tape sticking apparatus which sticks the said adhesive tape on the surface of a workpiece | work, pressing the non-adhesive surface of an adhesive tape with an adhesive member,
Holding means for holding the workpiece;
A tape supply means for supplying a strip-shaped adhesive tape to the surface of the held workpiece;
An attaching means for attaching the adhesive tape to the surface of the workpiece while pressing the non-adhesive surface of the supplied belt-like adhesive tape with an attaching member;
Peeling means for peeling the adhesive tape affixed to the workpiece;
Detecting means for detecting foreign matter or / and bubbles present at the interface between the surface of the workpiece and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape attached by the sticking means;
When foreign matter or / and bubbles are detected at the interface between the two members by the detecting means, the adhesive tape affixed to the workpiece is peeled off as an unnecessary adhesive tape and sent out, and the newly supplied adhesive tape is transferred to the workpiece. Control means for driving and controlling the sticking means and the peeling means to stick to the surface of
Cutting means for cutting the adhesive tape attached to the workpiece into a predetermined shape when no foreign matter or / and bubbles are detected from the interface between the two members by the detection means;
Unnecessary adhesive tape peeled off by detection of the foreign matter or / and bubbles, and tape recovery means for recovering unnecessary adhesive tape after being cut by the cutting means,
It is provided with.

  (Operation / Effect) According to the sixth invention, the holding means holds the workpiece. The tape supply means supplies a strip-shaped adhesive tape on the surface of the held work. The affixing means affixes the pressure-sensitive adhesive tape on the surface of the workpiece while pressing the non-adhesive surface of the supplied strip-shaped adhesive tape with the affixing member. A peeling means peels the adhesive tape affixed on the workpiece | work. The detection means detects foreign matter or / and bubbles present at the interface between the work surface to which the adhesive tape is attached and the adhesive surface of the adhesive tape. The control means peels off the adhesive tape affixed to the workpiece as an unnecessary adhesive tape and sends it out when a foreign substance or / and air bubbles are detected at the interface between the two members by the detection means, and newly supplied adhesive tape The sticking / peeling means is driven and controlled so that is attached to the surface of the workpiece. The cutting means cuts the adhesive tape affixed to the workpiece into a predetermined shape when no foreign matter or / and air bubbles are detected from the interface between the two members by the detection means. The tape collecting means collects an unnecessary adhesive tape peeled off by detecting foreign matter or / and air bubbles and an unnecessary adhesive tape after being cut by the cutting means.

  According to this configuration, after the adhesive tape is affixed to the surface of the work held by the holding means, the detection means detects whether or not foreign matter is present at the interface between the work surface and the adhesive surface of the adhesive tape. Is done. When a foreign object or the like is detected, the peeling means is driven and controlled by the control means, and the adhesive tape is peeled from the work. At this time, foreign matter or the like is attached and removed by the adhesive tape. Further, the sticking means is driven and controlled by the control means, and a new pressure-sensitive adhesive tape is stuck on the workpiece from which the pressure-sensitive adhesive tape has been peeled off. That is, the pressure-sensitive adhesive tape can be attached to the work in a state where the surface of the work and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape are flush with each other in a state where no foreign matter is present.

  Moreover, in the said adhesive tape sticking apparatus, the test | inspection of generation | occurrence | production of a foreign material etc. can be performed with respect to the whole workpiece | work which stuck the adhesive tape.

  The detection means includes a height detection means for detecting the surface height of the workpiece to which the adhesive tape is attached, a surface height determined in advance from the detected surface height of the workpiece, the thickness of the workpiece and the thickness of the adhesive tape. It is preferable to include a determination unit that compares the height with a reference height and determines whether or not both values match. According to this configuration, it is possible to easily detect the variation in the surface height of the work to which the adhesive tape is attached due to the occurrence of foreign matter or the like.

  Further, the detection means is preferably an image processing means for photographing a surface of a work to which an adhesive tape is attached and detecting foreign matter or / and bubbles from the acquired image data. According to this configuration, it is possible to easily recognize the presence of foreign matter or bubbles from the image data of the photographed workpiece surface.

  Moreover, as a workpiece | work, it can apply to a semiconductor wafer, for example. When applying a semiconductor wafer to the workpiece, a device for attaching a protective tape to the surface of the semiconductor wafer, and a supporting adhesive tape from the back surface to hold the semiconductor wafer on the ring-shaped frame, the semiconductor wafer and the ring-shaped frame It can be applied to a device for pasting.

  In the case of an apparatus for attaching a protective tape to the surface of a semiconductor wafer, the holding means holds the conductor wafer, and the attaching means attaches a protective adhesive tape to the surface of the semiconductor wafer held by the holding means, and cuts the means. Cuts the protective adhesive tape affixed to the surface of the semiconductor wafer along the outer periphery of the semiconductor wafer.

  When sticking the supporting adhesive tape on the back surface of the semiconductor wafer, the holding means holds the semiconductor wafer at the approximate center of the ring-shaped frame, and the sticking means holds the semiconductor wafer on the ring-shaped frame. The adhesive tape for support is affixed over the back surface and the ring-shaped frame, and the cutting means cuts the adhesive tape into substantially the same shape as the ring-shaped frame.

  According to these above-described configurations, the foreign matter present at the interface between the surface of the semiconductor wafer and the adhesive surface of each adhesive tape in a series of processing steps of the apparatus for attaching the protective adhesive tape and the supporting adhesive tape to the semiconductor wafer. In addition, each adhesive tape can be attached in a state where the adhesive tape is flush with and in close contact with the surface of the semiconductor wafer with all of the bubbles removed.

  Therefore, since the entire number can be inspected for the presence of foreign matters or / and bubbles in the apparatus, it is possible to suppress variations in the thickness of the semiconductor wafer due to the back grinding process, and scattering and breakage of chips during dicing. Furthermore, since it is not necessary for an operator to inspect foreign objects using individual devices, work efficiency can be improved.

  According to the pressure-sensitive adhesive tape sticking method and the apparatus using the same according to the present invention, when foreign matters or / bubbles are present at the interface between the work sticking surface to which the pressure-sensitive adhesive tape is stuck and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape, By peeling off the tape, foreign matter and air bubbles can be removed from the workpiece surface, and the adhesive tape can be applied in a state of being flush with and in close contact with the workpiece.

  Embodiments of a protective tape applying apparatus provided with the protective tape cutting apparatus of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the overall configuration of the protective tape attaching device, and FIG. 2 is a plan view showing the main part thereof.

  A semiconductor wafer (hereinafter simply referred to as “wafer”) protective tape applying apparatus 1 according to an embodiment includes a wafer supply unit 3 in which a cassette C1 containing a wafer is loaded in front of the base 2 shown in FIG. (Left side) and a wafer recovery unit 4 (right side) that recovers the wafer W having the protective tape T1 attached to the surface thereof are provided. A wafer transfer mechanism 5 having a robot arm 6 is disposed between the wafer supply unit 3 and the wafer recovery unit 4. In addition, an alignment stage 7 is provided at the back right side of the base 2, and a tape supply unit 8 for supplying the protective tape T <b> 1 toward the wafer W is provided above the alignment stage 7. In addition, a separator collection unit 9 that collects only the separator S from the protective tape T1 with a separator supplied from the tape supply unit 8 is disposed obliquely to the lower right of the tape supply unit 8. On the left side of the alignment stage 7 is a holding unit 10 for mounting and holding the wafer W, a tape applying mechanism 11 for applying the protective tape T1 to the wafer W held by the holding unit 10, and a protective tape T1 for the wafer W. A tape peeling mechanism 12 for peeling the unnecessary tape T2 after being attached is provided, and a cutter unit 13 for cutting the protective tape T1 attached to the wafer W along the outer shape of the wafer W is provided above it. Has been. In addition, a tape collection unit 14 that collects unnecessary tape T2 is disposed on the upper left side of the base 2. Further, there is a static eliminating unit 15 for removing static electricity from the protective tape T1 before being attached to the wafer W and the unnecessary tape T2 before being collected after the protective tape T1 is attached to the wafer W with the holding unit 10 interposed therebetween. Each is deployed.

Hereinafter, each mechanism will be specifically described.
The wafer supply unit 3 includes a cassette table that can be moved up and down, and a cassette C1 that stores wafers W in multiple stages is placed on the cassette table. At this time, the wafer W maintains a horizontal posture with the pattern surface facing upward.

  The wafer transfer mechanism 5 includes a robot arm 6 and is configured to rotate by a drive mechanism (not shown).

  The robot arm 6 includes a substantially rectangular wafer holder 16 at the tip thereof. The wafer holding portion 16 is provided with a suction hole (not shown) so that the wafer W is vacuum-sucked from the back surface. The shape of the wafer holder 16 is not limited to a rectangular shape, and may be a horseshoe shape.

  That is, the robot arm 6 sucks and holds the wafer W from the back surface by the wafer holding unit 16 moving forward and backward through the gaps between the wafers W stored in multiple stages in the cassette C1, and the alignment stage 7 described later. The holding unit 10 and the wafer recovery unit 4 are transferred in this order.

  The alignment stage 7 aligns the mounted wafer W based on an orientation flat or the like.

  As shown in FIG. 2, the holding unit 10 is provided so as to cover the entire surface of the wafer W and to have a chuck table 17 having substantially the same shape as the wafer W and to enclose the chuck table 17 in the center thereof and surround the outer periphery. Frame material 18. The holding unit 10 corresponds to the holding unit of the present invention.

  The chuck table 17 is aligned with the orientation flat of the transferred wafer W as a reference, and covers the entire back surface of the wafer W and sucks it by vacuum. Further, the chuck table 17 can be moved up and down along a guide by a drive mechanism (not shown). That is, the height of the frame member 18 and the surface height of the wafer W attracted and held on the chuck table 17 can be adjusted to be the same.

  As shown in FIG. 7, the tape supply unit 8 guides the protective tape T <b> 1 with the separator S fed out from the tape bobbin 27 around the guide roller 28 group. The tape supply unit 8 is pivotally supported on the vertical wall of the apparatus main body and is restricted from rotating via a brake mechanism or the like. The tape supply unit 8 corresponds to the tape supply means of the present invention.

  A separator bobbin 29 is pivotally supported on a vertical wall of the separator collection unit 9 and is linked to a driving mechanism such as a motor.

  Returning to FIG. 4, the tape applying mechanism 11 moves the movable base 34 supported so as to be slidable left and right along the pair of front and rear rails 33 by means of a feed screw shaft 36 that is driven forward and backward by a motor 35. In addition to moving the screw horizontally, the movable base 34 is provided with a sticking roller 30 for sticking a protective tape and a sensor 36. The tape sticking mechanism 11 corresponds to the sticking means of the present invention.

  The affixing roller 30 is wider than the wafer diameter, and is connected and fixed so as to be adjustable in height to a rotary spindle 40 that is projected and supported on the front surface of the movable table so as to be rotatable. The sticking roller 30 corresponds to the sticking member of the present invention.

  An operating arm 41 is fastened and connected to the base of the rotary support shaft 40, and a connecting rod pivotally connected to the free end of the operating arm 30 is connected to the piston of the air cylinder 42 mounted on the front surface of the movable base 22. It is connected to the rod 42a. The rotation support shaft 40 is rotated by the swinging of the operation arm 41 accompanying the forward / backward movement of the piston rod 42a, whereby the sticking roller 30 moves up and down.

  The sensor 36 is a laser scanning displacement sensor arranged in parallel with the application roller 30 via the frame F, and detects the surface height of the entire surface of the protective tape T1 attached to the wafer W. Specifically, the surface of the protective tape T1 is projected using the intensity of the light that is continuously projected from the start to the end of the protective tape T1 on the wafer W and is reflected and returned. The height data (actual measurement value) is acquired. Further, the acquired data is transmitted to the control unit 47 shown in FIG.

  The control unit 47 includes a storage unit 48 and a determination unit 49. In the memory 48, the drive conditions and program of the apparatus are set in advance, and the workpiece thickness reference value obtained by adding the thickness of the wafer W to which the protective tape T1 is attached and the thickness of the protective tape T1 to be used is stored. ing.

  The determination unit 49 compares the measured value of the surface height of the protective tape T1 transmitted from the sensor 36 with a reference value set and input in advance in the storage unit 49, and compares whether or not both values match. is doing. That is, when the measured value and the reference value do not match, the determination unit 49 determines that foreign matter or bubbles are involved in the interface between the surface of the wafer W and the adhesive surface of the protective tape T1. In this case, the control unit 49 operates the tape peeling mechanism 12 without driving the cutter unit 13 to peel off the protective tape T1 that is currently attached to the wafer W. After the protective tape T1 is peeled off, the tape applying mechanism is operated so that the protective tape T1 is reapplied. Specific processing will be described later.

  The cutter unit 13 moves up and down over a standby position and an operating position for cutting the protective tape T1 by an elevator mechanism (not shown), and cuts the protective tape T1 along the outer periphery of the wafer W. The cutter unit 13 corresponds to the cutting means of the present invention.

  Returning to FIGS. 2 and 3, the tape peeling mechanism 12 moves the movable base 34 supported so as to be slidable left and right along the pair of front and rear rails 33 by means of a feed screw shaft 36 that is driven forward and backward by a motor 35. In addition to moving the screw horizontally, the movable base 43 is provided with a peeling roller 31 for attaching a protective tape, a feed roller 44 that is driven and rotated, and a sandwiching roller 45 facing the roller. This peeling roller 31 is used when the actual value acquired from the control sensor 36 does not match the reference value, and when the protective tape T1 attached to the wafer W at that time and the surface height match the reference value. Each of the unnecessary tapes T2 after being cut along the outer periphery of the wafer W is for peeling from the wafer W. The tape peeling mechanism 12 corresponds to the peeling means of the present invention.

  The tape recovery unit 14 has a recovery bobbin 32 pivotally supported on the vertical wall of the base 2 and is linked to a drive unit such as a motor. That is, a predetermined amount of the protective tape T1 is fed out from the tape supply unit 11 and supplied onto the wafer W, and unnecessary tape T2 after the protective tape T1 is cut is wound around the recovery bobbin 32 by operating the drive unit. It has come to be taken. The tape collection unit 14 corresponds to the tape collection unit of the present invention.

  The wafer collection unit 4 includes a cassette table that can be raised and lowered, and the cassette C2 is placed on the cassette table. In the cassette C2, the wafers W having the protective tape T1 attached on the surface are stored in multiple stages. At this time, the wafer W maintains a horizontal posture with the pattern surface facing upward.

  Next, a single operation of attaching the protective tape T1 to the surface of the wafer W using the above-described embodiment apparatus will be described with reference to the flowchart of FIG. 6 and the operation explanatory diagrams of FIGS.

  First, the protective tape T1 to be used and the wafer W to be processed are selected from the operation unit. The control unit 47 adjusts the height of the chuck table 17 and the like based on information such as the wafer W registered in advance based on this selection condition, for example, the thickness information on the protective tape T1 and the wafer W in this embodiment.

  When the height adjustment of the chuck table 17 is completed, the cassette table is moved up and down to adjust the position so that the wafer W to be taken out can be taken out from the cassette C1 placed on the cassette table by the robot arm 6 (step S1).

  When the alignment of the cassette C1 is completed, the wafer transfer mechanism 5 is turned and the wafer holding portion 16 of the robot arm 6 is inserted into the gap between the wafers W in the cassette C1. The robot arm 6 sucks and holds the wafer W from the back surface by the wafer holder 16 and transfers the wafer W to the alignment stage 7.

  The wafer W placed on the alignment stage 7 is aligned based on an orientation flat, a notch or the like. After alignment, the back surface of the wafer W is sucked and held by the robot arm 6 and transferred to the chuck table 17.

  The wafer W placed on the chuck table 17 is aligned and held by suction (step S2). At this time, as shown in FIG. 7, the tape applying mechanism 11 and the tape peeling mechanism 12 are located at the left initial position, and the cutter unit 13 is located at the upper standby position.

  When the alignment of the wafer W is completed, as shown in FIG. 8, the sticking roller 30 of the tape sticking mechanism 11 presses the protective tape T1, and the frame 18 is moved in the direction opposite to the tape running direction (left in FIG. 5). To the right), and continuously rolls on the wafer W so that the protective tape T1 is uniformly applied to the entire surface of the wafer W.

  The sensor 36 integrated with the frame F in conjunction with the rolling of the sticking roller 30 acquires data on the surface height of the protective tape T1 (step S3).

  Data acquired by the sensor 37 is sequentially transmitted to the control unit 47, and the actual measurement value received by the determination unit 49 of the control unit 47 and the reference value stored in advance in the storage unit 48 are read and compared (step). S4).

  If the two values do not match as a result of the comparison, it is determined that foreign matter, bubbles, or the like are present at the interface between the surface of the wafer W and the adhesive surface of the protective tape T1. In this case, the control unit 47 operates the tape peeling mechanism 13 to peel off the protective tape T1 that is currently attached to the surface of the wafer W as shown in FIG. When the tape peeling mechanism 12 reaches the end position of the peeling operation, the tape applying mechanism 11 and the tape peeling mechanism 12 move in the tape running direction and return to the initial position shown in FIG. At this time, the peeled protective tape T1 is taken up and collected on the collecting unit bobbin 32 as an unnecessary tape T2, and a certain amount of new protective tape T1 is fed out from the tape supply unit 8 (step S5).

  As a result of the comparison by the determination unit 49, if the two values match, it is determined that there is no foreign substance or the like at the interface between the two members.

  In this case, as shown in FIG. 10, the cutter unit 13 is lowered to the cutting action position, and the blade edge is pierced and penetrates the protective tape T1. As the cutting edge moves along the outer periphery of the wafer W, the protective tape T1 is cut into a substantially wafer shape (step S6).

  After cutting the protective tape T1, the cutter unit 13 rises and returns to the standby position.

  Next, as shown in FIG. 11, the tape peeling mechanism 12 was cut on the wafer W while moving on the frame 18 and the wafer W in the direction opposite to the tape running direction (from left to right in FIG. 7). Unnecessary tape T2 is wound up and peeled off (step S7).

  When the tape peeling mechanism 12 reaches the end position of the peeling operation, the tape peeling mechanism 12 and the tape applying mechanism 11 move in the tape running direction and return to the initial position shown in FIG. At this time, unnecessary tape T2 is wound around the collection bobbin 32, and a certain amount of protective tape T1 is fed out from the tape supply unit 8 (step S8). This completes one round of operation of attaching the protective tape T1 to the surface of the wafer W.

  As described above, the protective tape T1 is attached to the surface of the wafer W, and at the same time, the surface height data (actual measurement value) of the protective tape T1 is acquired and the protective tape T1 is attached to the wafer W. The surface height variation can be detected by comparing the surface height reference value. In other words, it can be known that foreign matter or bubbles are present at the interface between the surface of the wafer W and the adhesive surface of the protective tape T1. In this way, when foreign matter or the like is present at the interface between the two members, the protective tape T1 currently attached to the wafer W is peeled off, so that the foreign matter or the like present at the interface is applied to the adhesive surface of the protective tape T1. It can be removed by adhering. That is, a new protective tape T1 can be adhered to the surface of the wafer W in a state where there is no foreign matter, and the surface of the protective tape T1 is flushed in the next step. Since the back grinding process can be performed in the adsorbed state, variations in the thickness of the wafer W can be eliminated.

  Further, in the series of processing steps of the protective tape applying apparatus 1, it is possible to inspect whether or not there is a foreign substance or the like existing on the interface between both members for all of the wafers W attached with the protective tape T1. The outflow of the wafer W containing foreign substances can be prevented, and the work efficiency can be improved.

<Example 2>
In this embodiment, a case where the present invention is applied to a semiconductor wafer mounting apparatus will be described.

  FIG. 12 is a cutaway perspective view showing an overall configuration of a semiconductor wafer mounting apparatus according to one embodiment of the present invention.

  The semiconductor wafer mounting apparatus 101 includes a wafer supply unit 102 in which cassettes C for storing wafers W subjected to back grinding are loaded in multiple stages, a wafer transfer mechanism 103 having a robot arm 104 and a pressing mechanism 105, An alignment stage 107 that aligns the wafer W, an ultraviolet irradiation unit 114 that irradiates the wafer W placed on the alignment stage 107 with ultraviolet rays, a chuck table 115 that holds the wafer W by suction, and a ring-shaped frame ( Hereinafter, the ring frame supply unit 116 in which the “ring frame f” is simply stored in multiple stages, the ring frame transport mechanism 117 for transferring the ring frame f to the dicing tape DT, and the dicing tape DT as the ring frame f Tape processing part 1 pasted from the back 8, a ring frame elevating mechanism 126 that moves up and down the ring frame f to which the dicing tape DT is attached, and a mount frame in which the wafer W is attached to and integrated with the ring frame f to which the dicing tape DT is attached. A mount frame manufacturing unit 127 for manufacturing the MF, a first mount frame transport mechanism 129 for transporting the manufactured mount frame MF, a stripping mechanism 130 for stripping the protective tape T1 attached to the surface of the wafer W, and stripping A second mount frame transport mechanism 135 that transports the mount frame MF from which the protective tape T1 has been peeled off by the mechanism 130, a turntable 136 that changes the direction of the mount frame MF, and a mount frame that houses the mount frames MF in multiple stages. Consists of recovery unit 137 It has been.

  The wafer supply unit 102 includes a cassette table, and a cassette C in which wafers W each having a protective tape T1 attached to a pattern surface (hereinafter referred to as “surface” as appropriate) is stored in multiple stages is placed on the cassette table. It is like that. At this time, the wafer W maintains a horizontal posture with the pattern surface facing upward.

  The wafer transfer mechanism 103 is configured to turn and move up and down by a drive mechanism (not shown). That is, the position of the wafer holding unit of the robot arm 104 to be described later and the pressing plate 106 provided in the pressing mechanism 105 are adjusted, and the wafer W is transferred from the cassette C to the alignment stage 107.

  The robot arm 104 of the wafer transfer mechanism 103 includes a horseshoe-shaped wafer holder (not shown) at the tip. Further, the robot arm 104 is configured such that the wafer holding unit can advance and retreat through the gap between the wafers W stored in the cassette C in multiple stages.

  A suction hole is provided in the wafer holding unit, and the wafer W is held by vacuum suction from the back surface.

  The pressing mechanism 105 of the wafer transfer mechanism 103 includes a circular pressing plate 106 having substantially the same shape as the wafer W at the tip thereof, and the pressing plate 106 moves above the wafer W placed on the alignment stage 107. Thus, the arm portion is configured to be able to advance and retract. The shape of the pressing plate 106 is not limited to a circular shape, and may be any shape that can correct the warpage occurring on the wafer W. For example, the tip of a bar or the like may be pressed against the warped portion of the wafer W.

  Further, the pressing mechanism 105 is operated when a suction failure occurs when the wafer W is placed on a holding table 108 of an alignment stage 107 described later. Specifically, when the wafer W is warped and the wafer W cannot be sucked and held, the pressing plate 106 presses the surface of the wafer W, corrects the warpage, and makes the surface flat. In this state, the holding table 108 vacuum-sucks the wafer W from the back surface.

  The alignment stage 107 includes a holding table 108 that aligns the mounted wafer W based on an orientation flat or the like and covers the entire back surface of the wafer W by vacuum suction.

  The alignment stage 107 detects a pressure value when the wafer W is vacuum-sucked, and is determined in advance in relation to the pressure value during normal operation (when the wafer W is normally sucked by the holding table 108). Compare with the reference value. If the pressure value is higher than the reference value (that is, the pressure in the intake pipe is not sufficiently reduced), it is determined that the wafer W is warped and is not attracted to the holding table 108. Then, the wafer W is attracted to the holding table 108 by operating the pressing plate 106 to press the wafer W to correct the warp.

  The alignment stage 107 has a wafer over an initial position where the wafer W is placed and aligned, and an intermediate position between a chuck table 115 and a ring frame elevating mechanism 126 arranged in multiple stages above a tape processing unit 118 described later. It is configured to be able to carry and move W in a state where W is sucked and held. That is, the alignment stage 107 conveys the wafer W to the next process while correcting the warpage and holding it in a flat state.

  The ultraviolet irradiation unit 114 is located above the alignment stage 107 in the initial position. The ultraviolet irradiation unit 114 irradiates ultraviolet rays toward the protective tape T1, which is an ultraviolet curable adhesive tape attached to the surface of the wafer W. That is, the adhesive force of the protective tape T1 is reduced by irradiation with ultraviolet rays.

  The chuck table 115 has a circular shape that is substantially the same shape as the wafer W so as to cover the surface of the wafer W and be vacuum-sucked, and the wafer W is ringed from a standby position above the tape processing unit 118 by a drive mechanism (not shown). It moves up and down over the position where it is attached to the frame f.

  That is, the chuck table 115 comes into contact with and holds the wafer W that has been warped by the holding table 108 and held in a flat state.

  The chuck table 115 is placed in an opening of a ring frame lifting mechanism 126 that sucks and holds a ring frame f to which a dicing tape DT, which will be described later, is attached, and the wafer W is a dicing tape at the center of the ring frame f. It descends to a position close to DT.

  At this time, the chuck table 115 and the ring frame elevating mechanism 126 are held by a holding mechanism (not shown).

  The ring frame supply unit 116 has a wagon shape with a pulley provided at the bottom, and is loaded into the apparatus main body 100. The ring frame f accommodated in multiple stages inside is opened and slid up and sent out.

  The ring frame transport mechanism 117 vacuum-sucks the ring frames f housed in the ring frame supply unit 116 one by one from the top in order, and places the ring frame at an alignment stage (not shown) and a position where the dicing tape DT is attached. f is conveyed in order. The ring frame transport mechanism 117 also functions as a holding mechanism that holds the ring frame f at the position where the dicing tape DT is applied when the dicing tape DT is applied.

  The tape processing unit 118 includes a tape supply unit 119 for supplying the dicing tape DT, a tension mechanism 120 for applying tension to the dicing tape DT, an affixing unit 121 for affixing the dicing tape DT to the ring frame f, and an affixing to the ring frame f A cutter mechanism 124 that cuts the attached dancing tape DT, a peeling unit 123 that peels unnecessary tape after being cut by the cutter mechanism 124 from the ring frame f, and tape recovery that collects unnecessary residual tape after cutting Part 125.

  The tension mechanism 120 sandwiches the dicing tape DT from both ends in the width direction and applies tension in the tape width direction. That is, when the soft dicing tape DT is used, vertical tension occurs on the surface of the dicing tape DT along the supply direction due to the tension applied in the tape supply direction. In order to avoid this vertical wrinkle and to apply the dicing tape DT uniformly to the ring frame f, tension is applied from the tape width direction side.

  The affixing unit 121 is disposed at a standby position diagonally below the ring frame f held above the dicing tape DT (lower left diagonal in FIG. 12). The affixing roller 122 provided in the affixing unit 121 conveys and holds the ring frame f at the affixing position of the dicing tape DT by the ring frame conveying mechanism 117, and starts supplying the dicing tape DT from the tape supply unit 119. At the same time, it moves to the right sticking start position in the tape supply direction.

  When the sticking roller 122 reaches the sticking start position, the sticking roller 122 moves upward and presses and attaches the dicing tape DT to the ring frame f, rolls from the sticking start position toward the standby position, and presses the dicing tape DT while pressing the ring. It is designed to be pasted on the frame f.

  The peeling unit 123 is configured to peel an unnecessary portion of the dicing tape DT cut by a cutter mechanism 124 described later from the ring frame f. Specifically, when the attachment and cutting of the dicing tape DT to the ring frame f is completed, the holding of the dicing tape DT by the tension mechanism 120 is released. Next, the peeling unit 123 moves on the ring frame f toward the tape supply unit 119 to peel off unnecessary dicing tape DT after cutting.

  The cutter mechanism 124 is disposed below the dicing tape DT on which the ring frame f is placed. When the dicing tape DT is attached to the ring frame f by the attaching unit 121, the holding of the dicing tape DT by the pulling mechanism 120 is released, and the cutter mechanism 124 is raised. The raised cutter mechanism 124 cuts the dicing tape DT along the ring frame f.

  The ring frame elevating mechanism 126 is in a standby position above the position where the dicing tape DT is attached to the ring frame f. The ring frame elevating mechanism 126 descends when the attaching process of the dicing tape DT to the ring frame f is completed, and holds the ring frame f by suction. At this time, the ring frame transport mechanism 118 holding the ring frame f returns to the initial position above the ring frame supply unit 116.

  Further, when the ring frame elevating mechanism 126 sucks and holds the ring frame f, the ring frame elevating mechanism 126 moves up to the bonding position with the wafer W. At this time, the chuck table 115 holding the wafer W by suction is also lowered to the bonding position of the wafer W.

  The mount frame manufacturing unit 127 includes a sticking roller 128 and a sensor 142. The affixing roller 128 rolls while pressing the non-adhesive surface of the dicing tape DT affixed to the back surface of the ring frame f. The sticking roller 128 is made of a soft material such as rubber or resin.

  The sensor 142 is a laser scan type displacement sensor arranged in parallel with the application roller 128 via the frame F, and the surface height of the entire surface of the dicing tape DT attached over the back surface of the wafer W and the ring frame f. Is detected. Specifically, the back surface of the wafer W is projected on the entire surface from the sticking start end to the end of the dicing tape DT on the back surface of the wafer W, and the intensity of light reflected and returned is used. Data (actual measurement value) of the surface height of the dicing tape DT was obtained. Further, the acquired data is transmitted to the control unit 147 shown in FIG.

  The control unit 147 includes a storage unit 148 and a determination unit 149. The storage device 148 has reflected light that is returned by projecting a laser in a state where the dicing tape DT is attached to the wafer W to which the dicing tape DT is attached, in addition to the drive conditions and programs of the apparatus being set in advance. The theoretical value of intensity is stored.

  The determination unit 149 compares the actually measured value of the intensity of the reflected light transmitted from the sensor 142 with the theoretical value set and input in advance in the storage unit 149, and compares whether or not both values match. . That is, when the actual measurement value and the theoretical value do not coincide with each other, the determination unit 149 determines that foreign matter or bubbles are involved in the interface between the back surface of the wafer W and the adhesive surface of the dicing tape DT. In this case, the control unit 149 operates the peeling unit 123 without driving the cutter mechanism 124 to peel off the dicing tape DT that is currently stuck across the back surface of the wafer W and the ring frame f. After the dicing tape DT is peeled off, the sticking unit 121 is operated so that a new dicing tape DT is attached again. Specific processing will be described later.

  The cutter mechanism 125 moves up and down over a standby position and a working position for cutting the dicing tape DT by a lifting mechanism (not shown), and cuts the dicing tape TD along the surface of the ring frame f.

  The first mount frame transport mechanism 129 is configured to vacuum-suck the mount frame MF integrally formed with the ring frame f and the wafer W and transfer the mount frame MF to a peeling table (not shown) of the peeling mechanism 130.

  The peeling mechanism 130 includes a peeling table (not shown) on which the wafer W is placed and moved, a tape supply unit 131 for supplying the peeling tape Ts, a peeling unit 132 for attaching and peeling the peeling tape Ts, and a peeling unit. It comprises a peeling tape Ts and a tape collecting part 134 for collecting the protective tape T1. The structure excluding the peeling table in the peeling mechanism 130 is provided on the entire surface of the vertical wall (not shown) of the apparatus main body 100.

  The tape supply part 131 supplies the peeling tape Ts derived from the original fabric roller through the upper part of the peeling table.

  The peeling unit 132 includes an edge member 133 for tape peeling with a sharp tip. The edge member 133 presses the surface of the protective tape T1 attached to the pattern surface of the wafer W (wafer W attached to the mount frame MF via the dicing tape DT) conveyed by the peeling table. Move while. At this time, the edge member 133 attaches the peeling tape Ts to the protective tape T1 while pressing the non-adhesive surface of the peeling tape Ts, and peels the peeling tape Ts and the protective tape T1 together. . As the peeling tape Ts, a tape having a width smaller than the diameter of the wafer W is used.

  The second mount frame transport mechanism 135 is configured to vacuum-suck the mount frame MF delivered from the peeling mechanism 130 and transfer it onto the turntable 136.

  The turntable 136 is configured to align the mount frame MF and store it in the mount frame collection unit 137. That is, when the mount frame MF is placed on the turntable 136 by the second mount frame transport mechanism 135, alignment is performed based on the orientation flat of the wafer W, the positioning shape of the ring frame f, and the like. In order to change the direction in which the mount frame MF is stored in the mount frame collection unit 37, the turntable 136 is turned. Further, when the storage direction is determined, the turntable 136 pushes the mount frame MF with a pusher (not shown) and stores the mount frame MF in the mount frame collection unit 137.

  The mount frame collection part 137 is placed on a mounting table (not shown) that can be raised and lowered. In other words, the mount frame MF pushed out by the pusher can be stored in an arbitrary stage of the mount frame collection unit 37 by moving the mounting table up and down.

  Next, a round operation of manufacturing the mount frame MF using the above-described embodiment apparatus will be described with reference to the flowchart of FIG. 14 and the operation explanatory diagrams of FIGS.

  The wafer holding part of the robot arm 104 is inserted into the gap of the cassette C. The wafers W are sucked and held from below and taken out one by one. The removed wafer W is transferred to the alignment stage 107.

  The wafer W is placed on the holding table 108 by the robot arm 104 and sucked and held from the back surface. At this time, the suction level of the wafer W is detected by a pressure gauge (not shown) and compared with a reference value determined in advance in relation to the pressure value during normal operation.

  When a suction abnormality is detected, the wafer W is pressed from the surface by the pressing plate 106, and the wafer W is sucked and held in a flat state in which the warp is corrected. The wafer W is aligned based on the orientation flat or notch (step S10).

  When the alignment is completed on the alignment stage 107, the ultraviolet irradiation unit 114 irradiates the surface of the wafer W with ultraviolet rays (step S15).

  When the ultraviolet irradiation process is performed, the wafer W is transferred to the next mount frame manufacturing unit 127 together with the alignment stage 107 while being held by the holding table 108. That is, the alignment stage 107 moves to an intermediate position between the chuck table 115 and the ring frame lifting mechanism 126.

  When the alignment stage 107 stands by at a predetermined position, the upper chuck table 115 is lowered, and the bottom surface of the chuck table 115 comes into contact with the wafer W to start vacuum suction. When the vacuum suction of the chuck table 115 is started, the suction holding on the holding table 108 side is released, and the wafer W is received in a state in which the chuck table 115 is held flat by correcting the warp. The alignment stage 107 that has transferred the wafer W returns to the initial position.

  Next, the ring frames f stored in multiple stages in the ring frame supply unit 116 are vacuum-sucked one by one by the ring frame transport mechanism 117 and taken out. The taken-out ring frame f is aligned on an alignment stage (not shown), and then conveyed to the dicing tape DT attaching position above the dicing tape DT (step S20).

  When the ring frame f is held by the ring frame transport mechanism 117 and is at the application position of the dicing tape DT, the supply of the dicing tape DT from the tape supply unit 119 is started. At the same time, the sticking roller 122 moves to the sticking start position (step S25).

  When the sticking roller 122 reaches the sticking start position, the tension mechanism 120 holds both ends in the width direction of the dicing tape DT and applies tension in the tape width direction.

  Next, as shown in FIG. 15, the sticking roller 122 is raised, and the dicing tape DT is pressed against the end of the ring frame f to be stuck. When the dicing tape DT is affixed to the end of the ring frame f, the affixing roller 122 rolls toward the tape supply unit 19 side, which is the standby position, as shown in FIG. At this time, the application roller 122 rolls while pressing the dicing tape DT (non-adhesive surface), and attaches the dicing tape DT to the ring frame f.

  In conjunction with the rolling of the sticking roller 122, the sensor 142 integrated with the frame F receives the reflected light while projecting a laser onto the back surface of the wafer, and acquires the intensity value of the received reflected light ( Step S30).

  Data acquired by the sensor 142 is sequentially transmitted to the control unit 147, and the actual measurement value received by the determination unit 149 of the control unit 147 and the theoretical value stored in advance in the storage unit 148 are read and compared (step). S35).

  If the two values do not match as a result of the comparison, it is determined that foreign matter, bubbles, or the like are present at the interface between the back surface of the wafer W and the adhesive surface of the dicing tape DT. In this case, the control unit 147 operates the peeling unit 123 to peel off the dicing tape DT that is currently attached to the surface of the wafer W as shown in FIG. When the peeling unit 123 reaches the end position of the peeling work position, the sticking unit 121 and the peeling unit 123 move in the tape running direction and return to the initial position. At this time, the peeled dicing tape DT is taken up and collected by the tape collecting unit 125 as an unnecessary tape, and a certain amount of new dicing tape DT is fed out from the tape supply unit 19 (step S40).

  As a result of the comparison by the determination unit 149, if the two values match, it is determined that there is no foreign substance or the like at the interface between the two members.

  In this case, if the sticking roller 122 and the sensor have reached the end of the sticking position, the holding of the dicing tape DT by the pulling mechanism 120 is released.

  At the same time, the cutter mechanism 124 is raised, and the dicing tape DT is cut along the ring frame f as shown in FIG. 18 (step S45). When the cutting of the dicing tape DT is completed, the peeling unit 123 moves toward the tape supply unit 119 as shown in FIG. 19, and peels off the unnecessary dicing tape DT (step S50).

  Next, the tape supply unit 119 is actuated to feed out the dicing tape DT, and the cut unnecessary portion of the tape is sent to the tape collecting unit 125 to be wound and collected (step S55). At that time, the sticking roller 122 and the sensor move to the sticking start position so as to stick the dicing tape DT to the next ring frame f.

  The ring frame f to which the dicing tape DT is attached moves upward while the frame portion is sucked and held by the ring frame lifting mechanism 126. At this time, the chuck table 115 is also lowered. That is, the chuck table 115 and the ring frame elevating mechanism 126 move to a position where the wafer W is bonded to each other.

  When the mount frame MF is manufactured, the chuck table 15 and the ring frame elevating mechanism 126 move upward. At this time, a holding table (not shown) moves below the mount frame MF, and the mount frame MF is placed on the holding table. The mounted mount frame MF is sucked and held by the first mount frame transport mechanism 129 and transferred to the peeling table 138 (step S60).

  The peeling table on which the mount frame MF is mounted moves toward the lower side of the peeling unit 132. When the mount frame MF reaches the lower side of the peeling unit 132, the edge member 33 adheres the peeling tape Ts supplied from the tape supply unit 131 to the protective tape T1 on the surface of the wafer W while being pressed. The edge member 33 peels off the protective tape T1 together from the surface of the wafer W while peeling off the attached release tape Ts simultaneously with the application of the release tape Ts (step S65).

  The mount frame MF that has completed the peeling process of the protective tape T1 is moved to the standby position of the second mount frame transport mechanism 135 by the peeling table.

  The mount frame MF that has completed the peeling process of the protective tape T1 is moved to the standby position of the second mount frame transport mechanism 135 by the peeling table 133.

  The mount frame MF paid out from the peeling mechanism 130 is transferred to the turntable 136 by the second mount frame transport mechanism 135. The transferred mount frame MF is aligned by an orientation flat or a notch, and the accommodation direction is adjusted. When the alignment and the storage direction are determined, the mount frame MF is pushed out by the pusher and stored in the mount frame collection unit 137 (step S70).

  This completes one cycle of the operation of the semiconductor wafer mounting apparatus 100 of the present embodiment.

  As described above, the dicing tape DT is affixed to the back surface of the wafer W, and at the same time, the intensity value (measured value) of the reflected light from the dicing tape DT is acquired and compared with a predetermined theoretical value of the reflected light. By doing so, variation in the surface height of the dicing tape DT can be detected. In other words, it can be known that foreign matters and bubbles are present at the interface between the back surface of the wafer W and the adhesive surface of the dicing tape DT. In this way, when there is a foreign substance or the like at the interface between the two members, the dicing tape DT currently attached to the wafer W is peeled off so that the foreign substance or the like present at the interface is bonded to the dicing tape DT. It can be removed by adhering to the surface. That is, the dicing tape DT can be adhered to the back surface of the wafer W in a state where there is no foreign matter or the like, and the dicing tape DT is adhered to the dicing tape DT in the next dicing process. Therefore, it is possible to prevent the diced chips from being scattered or damaged due to poor adhesion.

  Further, in the series of processing steps of the semiconductor wafer mounting apparatus 1, it is possible to inspect whether or not there is a foreign substance or the like existing at the interface between both members of the entire wafer W to which the dicing tape DT is attached. In addition, it is possible to prevent the mount frame MF containing foreign matter from flowing out and improve work efficiency.

  The present invention is not limited to the embodiment described above, and can be modified as follows.

  (1) In each of the above embodiments, the laser tape displacement sensor is used to detect foreign matters existing at the interface of the protective tape T1 dicing tape DT affixed to the wafer W, but in addition to this, an optical camera The image data of the pasting surface such as the protective tape T1 may be acquired by using and the presence of a foreign substance or the like may be detected by image processing. Moreover, it is good also as a structure using a CCD line sensor.

  (2) In addition to the above embodiments, the present invention can be applied to an apparatus for attaching an adhesive tape to a plate-like workpiece.

1 is a perspective view showing an entire protective tape attaching apparatus according to Example 1. FIG. It is a top view which shows the principal part of a protective tape sticking apparatus. It is a side view of a holding table. It is a perspective view which shows the principal part of a holding table. It is a block diagram which shows the electrical structure of a protective tape sticking apparatus. It is a flowchart which shows operation | movement of a protective tape sticking apparatus. It is a schematic front view which shows the sticking operation | movement of a protective tape. It is a schematic front view which shows the sticking operation | movement of a protective tape. It is a schematic front view which shows the sticking operation | movement of a protective tape. It is a schematic front view which shows the sticking operation | movement of a protective tape. It is a schematic front view which shows the sticking operation | movement of a protective tape. FIG. 6 is a perspective view showing an entire semiconductor wafer mounting apparatus according to a second embodiment. It is a block diagram which shows the electrical structure of a semiconductor wafer mount apparatus. It is a flowchart which shows operation | movement of a semiconductor wafer mounting apparatus. It is a schematic front view which shows mount frame preparation operation | movement. It is a schematic front view which shows mount frame preparation operation | movement. It is a schematic front view which shows mount frame preparation operation | movement. It is a schematic front view which shows mount frame preparation operation | movement. It is a schematic front view which shows mount frame preparation operation | movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Protective tape sticking apparatus 7 ... Alignment stage 8 ... Tape supply part 10 ... Holding part 11 ... Tape sticking mechanism 12 ... Tape peeling mechanism 13 ... Cutter unit 14 ... Tape collection | recovery part 30 ... Sticking roller 36 ... Sensor 47 ... Control part 100 ... Semiconductor wafer mount device 121 ... Pasting unit 122 ... Pasting roller 123 ... Peeling unit 147 ... Control unit

Claims (10)

An adhesive tape application method for applying the adhesive tape to the work surface while pressing the non-adhesive surface of the adhesive tape with an adhesive member,
A first step of applying the adhesive tape to the surface of the work while pressing the non-adhesive surface of the belt-like adhesive tape with the application member;
A second step of detecting foreign matter or / and bubbles present at the interface between the surface of the workpiece to which the adhesive tape is attached and the adhesive surface of the adhesive tape;
A third step of peeling off the adhesive tape when foreign matter or / and bubbles are detected from the interface between the two members in the second step;
A fourth process of cutting the adhesive tape affixed to the work into a predetermined shape after performing the first process to the third process at least once for the work from which the adhesive tape has been peeled;
A method of applying an adhesive tape, comprising: In the adhesive tape sticking method of Claim 1,
The detection of foreign matter or / and bubbles in the second process is performed by detecting the reference value of the surface height determined in advance from the thickness of the workpiece and the thickness of the adhesive tape, and the adhesion when the adhesive tape is applied to the workpiece to be applied. A method for applying an adhesive tape, characterized by comparing the measured value of the surface height of the tape and determining whether or not both values match. In the adhesive tape sticking method of Claim 1,
The detection of foreign matter or / and bubbles in the second process is characterized in that the surface of the work to which the adhesive tape is attached is photographed, and foreign matter or / and bubbles are detected from the acquired image data by image processing. Adhesive tape application method. In the adhesive tape sticking method in any one of Claims 1 thru | or 3,
The workpiece is a semiconductor wafer;
In the first step, a protective adhesive tape is applied to the surface of the semiconductor wafer. In the adhesive tape sticking method in any one of Claims 1 thru | or 3,
The workpiece is a semiconductor wafer;
In the first step, a pressure-sensitive adhesive tape sticking method is provided, wherein a pressure-sensitive adhesive tape for support is stuck across the back surface of the semiconductor wafer and the ring-shaped frame so that the semiconductor wafer is held at substantially the center of the ring-shaped frame. An adhesive tape application device that applies the adhesive tape to the work surface while pressing the non-adhesive surface of the adhesive tape with an adhesive member,
Holding means for holding the workpiece;
A tape supply means for supplying a strip-shaped adhesive tape to the surface of the held workpiece;
An attaching means for attaching the adhesive tape to the surface of the workpiece while pressing the non-adhesive surface of the supplied belt-like adhesive tape with an attaching member;
Peeling means for peeling the adhesive tape affixed to the workpiece;
Detecting means for detecting foreign matter or / and bubbles present at the interface between the surface of the workpiece and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape attached by the sticking means;
When foreign matter or / and bubbles are detected at the interface between the two members by the detecting means, the adhesive tape affixed to the workpiece is peeled off as an unnecessary adhesive tape and sent out, and the newly supplied adhesive tape is transferred to the workpiece. Control means for driving and controlling the sticking means and the peeling means to stick to the surface of
Cutting means for cutting the adhesive tape attached to the workpiece into a predetermined shape when no foreign matter or / and bubbles are detected from the interface between the two members by the detection means;
Unnecessary adhesive tape peeled off by detection of the foreign matter or / and bubbles, and tape recovery means for recovering unnecessary adhesive tape after being cut by the cutting means,
An adhesive tape sticking device comprising: In the adhesive tape sticking device according to claim 6,
The detection means includes a height detection means for detecting a surface height of the work to which the adhesive tape is attached,
Comparing the detected surface height of the workpiece with a reference height of the surface height determined in advance from the thickness of the workpiece and the thickness of the adhesive tape, and determining means for determining whether or not both values match;
A pressure-sensitive adhesive tape affixing device comprising: In the adhesive tape sticking device according to claim 6,
The pressure-sensitive adhesive tape applying apparatus, wherein the detection means is an image processing means for photographing a surface of a work to which the pressure-sensitive adhesive tape is attached and detecting foreign matter or / and bubbles from the acquired image data. In the adhesive tape sticking device according to any one of claims 6 to 8,
The workpiece is a semiconductor wafer;
The holding means sucks and holds the semiconductor wafer,
The affixing means affixes a protective adhesive tape on the surface of the semiconductor wafer that is adsorbed and held by the holding means,
The said cutting means cut | disconnects the protective adhesive tape affixed on the surface of the said semiconductor wafer along the outer periphery of the said semiconductor wafer. The adhesive tape sticking apparatus characterized by the above-mentioned. In the adhesive tape sticking device according to any one of claims 6 to 8,
The workpiece is a semiconductor wafer;
The holding means holds the semiconductor wafer placed in the center of the ring-shaped frame and the ring-shaped frame,
The affixing means affixes a supporting adhesive tape across the back surface of the semiconductor wafer and the ring frame so as to hold the semiconductor wafer on the ring frame;
The adhesive tape attaching apparatus, wherein the cutting means cuts the adhesive tape into substantially the same shape as the ring-shaped frame.

Images