WO2016117777A1 - 웨이퍼 이송 장치 - Google Patents
웨이퍼 이송 장치 Download PDFInfo
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- WO2016117777A1 WO2016117777A1 PCT/KR2015/006131 KR2015006131W WO2016117777A1 WO 2016117777 A1 WO2016117777 A1 WO 2016117777A1 KR 2015006131 W KR2015006131 W KR 2015006131W WO 2016117777 A1 WO2016117777 A1 WO 2016117777A1
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- Prior art keywords
- laser
- wafers
- guide
- wafer
- processing
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- 238000012546 transfer Methods 0.000 title claims abstract description 94
- 235000012431 wafers Nutrition 0.000 claims abstract description 219
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 67
- 238000000034 method Methods 0.000 claims description 56
- 238000005530 etching Methods 0.000 claims description 17
- 238000003672 processing method Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 14
- 238000003754 machining Methods 0.000 description 7
- 239000008239 natural water Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H01L21/67703—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations
- H01L21/67715—Changing the direction of the conveying path
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- H01L22/20—Sequence of activities consisting of a plurality of measurements, corrections, marking or sorting steps
- H01L22/26—Acting in response to an ongoing measurement without interruption of processing, e.g. endpoint detection, in-situ thickness measurement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- Embodiments relate to a wafer transfer device.
- the thickness of the wafer is measured before the wafer etching process using the thickness measuring equipment, and the thickness of the wafer is measured after etching the wafer using the etching equipment.
- Wafer thickness may be measured by using an electric field difference between a wafer and a capacitive probe to generate a electric field between the wafer and the capacitive probe.
- the thickness of the wafer is generally measured using a separate thickness measuring device before and after wafer etching to confirm the amount of etching. May occur.
- the embodiment provides a wafer transport apparatus capable of reducing time and manpower losses due to wafer thickness measurements.
- a wafer transfer device includes a guide moving in a vertical direction or a horizontal direction; A transfer arm installed in the guide and configured to seat wafers spaced apart from each other; A laser emitter disposed in the guide and emitting a first laser to spaced apart wafers seated on the transfer arm; And a laser detector disposed under the transfer arm and collecting a second laser beam passing through a gap between the spaced apart wafers among the first laser beams.
- the controller may further include a controller configured to measure thicknesses of the wafers spaced apart from each other based on the first laser irradiated from the laser emitter and the second laser captured by the laser collector.
- One end of the horizontal emission region of the first laser is aligned with the edge of the first one of the wafers, and the other end of the horizontal emission region of the first laser is aligned with the edge of the last one of the wafers. Can be.
- the wafer transfer apparatus may further include a laser sensing support unit connected between the guide and the laser sensing unit and fixing the laser sensing unit to the guide.
- the laser sensing support may move in the horizontal or vertical direction together with the guide.
- the laser sensing support may include a first laser sensing support connecting an end of the guide and an end of the laser sensing part; And a second laser sensing support including a second laser sensing support connecting the other end of the guide to the other end of the laser sensing unit.
- the transfer arm includes first and second arms coupled to one end of the guide; Third and fourth arms coupled to the other end of the guide; Support portions connected to the first to fourth arms; And cradles connected to the supports and on which the wafers are mounted.
- the first to fourth arms may pivotally move a portion coupled to the guide.
- the cradles include first and second cradles having one end connected to the first support part and the other end connected to the third support part; And third and fourth cradles having one end connected to the second support part and the other end connected to the fourth support part.
- the first to fourth cradles may include slots on which the wafers are seated.
- the wafer transfer apparatus may further include a transfer rail for moving the guide in a horizontal direction.
- the guide is moved in the horizontal direction by the transfer rail, a horizontal guide connected to the transfer arm; And a vertical guide connected to the horizontal guide and moving the horizontal guide in a vertical direction.
- a wafer transport apparatus includes a guide moving in a vertical direction or a horizontal direction; A transfer arm connected to the guide and configured to seat wafers spaced apart from each other; A laser emitter disposed in the guide and emitting lasers to spaced apart wafers seated on the transfer arm; A laser detector disposed under the transfer arm and configured to capture a laser beam passing through gaps between the wafers spaced apart from each other; And a controller for calculating lengths of regions not collected by the laser collector and measuring a thickness of a wafer corresponding to each of the calculated lengths.
- a wafer processing method processes wafers mounted in a wafer transfer apparatus including a laser emitter for irradiating a laser and a laser detector for detecting a laser.
- the wafer emitter is mounted on the wafer transfer apparatus by the laser emitter.
- a thickness measuring step of measuring thicknesses of the wafers mounted on the wafer transfer device according to the detected result;
- the wafer processing method may further include transferring the wafers by the wafer transfer device, and the laser irradiation step, the laser sensing step, and the thickness measuring step may be performed within the transferring step.
- the wafer processing method further includes a comparing step of comparing the measured thicknesses of the wafers with a predetermined thickness value, wherein the processing step determines whether or not to process the wafers according to the result compared by the comparing step; Alternatively, the processing time can be controlled.
- the processing step may be etching the wafers.
- the wafer processing method may include: a thickness measuring step of measuring a thickness of wafers processed by the processing step by performing the laser irradiation step, the laser sensing step, and the thickness measuring step after the processing step; And repeating the laser irradiation step, the laser detection step, the thickness measurement step, the comparison step, and the processing step until the measured thicknesses of the wafers processed by the processing step become equal to a predetermined thickness. It may further comprise the step.
- the processing step may further include a cleaning step of cleaning the wafers etched in the etching step.
- the processing step may further include a drying step of drying the wafers cleaned in the cleaning step.
- Embodiments can reduce time and manpower losses due to wafer thickness measurements.
- FIG. 1 is a front view of a wafer transfer apparatus according to an embodiment.
- FIG. 2 shows a side view of the wafer transfer device of FIG. 1.
- FIG. 3 shows a wafer processing process using the wafer transfer device shown in FIG. 1.
- FIG. 4 shows the laser emitter and laser collector shown in FIG. 2.
- FIG 5 is a front view of a transport apparatus according to another embodiment.
- FIG. 6 shows a side view of the conveying device of FIG. 5.
- FIG. 7 is a flowchart illustrating a wafer processing method according to an embodiment.
- each layer (region), region, pattern, or structure is “on” or “under” the substrate, each layer (film), region, pad, or pattern.
- “up” and “under” include both “directly” or “indirectly” formed through another layer. do.
- the criteria for up / down or down / down each layer will be described with reference to the drawings.
- FIG. 1 shows a front view of a wafer transfer device 100 according to an embodiment
- FIG. 2 shows a side view of the wafer transfer device 100 of FIG. 1.
- the wafer transfer device 100 includes a vertical guide 102, a transfer rail 105, a horizontal guide 110, a moving arm 120, a laser emitter 130, And a laser detector 160.
- Transport arm 120 may include arms 122a, 122b, 124a, 124b, supports 122a1, 122b1, 124a1, 124b1, and cradles 151-154.
- the conveying rail 105 is connected with the vertical guide 102 and moves the vertical guide 102 in a first direction, for example in the horizontal direction 201.
- the vertical guide 102 connects the horizontal guide 110 and the conveying rail 105, can move along the conveying rail 105, and moves the horizontal guide 110 in a second direction, for example, the vertical direction 202. Move it.
- the horizontal guide 110 is connected to the vertical guide 102, connected to the conveying rail 105 by the vertical guide 102, can move in the vertical direction 202 by the vertical guide 102, the conveying rail It can move in the horizontal direction 201 by the 105.
- the horizontal guide 110 supports the transfer arm 120 and may have a plate or box shape, but is not limited thereto.
- the horizontal guide 110 may have a shape or a length sufficient to transfer a plurality of wafers. have.
- the moving arm 120 is connected to and / or fixed with the horizontal guide 110, and may hold or support a plurality of wafers spaced apart from each other.
- the transfer arm 120 may hold or support the edge portions of the plurality of wafers spaced apart from each other such that the front or rear surface is parallel to the vertical direction 202.
- one end of the transfer arm 120 is connected to the horizontal guide 110, the transfer arm 120 may rotate about one end of the transfer arm 120 connected to the horizontal guide 110, and the transfer arm ( The other end of 120 may hold or support the edge portions of the plurality of wafers disposed spaced apart from each other.
- the transfer arm 120 includes first and second arms 122a and 122b coupled or fixed to one end of the horizontal guide 110, and third and fourth arms coupled or fixed to the other end of the horizontal guide 110.
- 124a and 124a1 may have the same shape as 122a and 122a1.
- the first arm 122a may be coupled or fixed to one side of one end of the horizontal guide 110 based on the center line 301 of the horizontal guide 110, and the second arm 122b may be connected to the horizontal guide 110. It may be coupled or fixed to the other end of the end.
- the center line 301 of the horizontal guide 110 may be a virtual line passing through the center of one end of the horizontal guide 110 and parallel to the vertical direction 202.
- the third arm 124a may be coupled or fixed to one side of the other end of the horizontal guide 110 based on the center line 301 of the horizontal guide 110, and the fourth arm 124b may be connected to the horizontal guide 110. It may be coupled or fixed to the other side of the other end.
- the center line 301 of the horizontal guide 110 may be a virtual line passing through the center of the other end of the horizontal guide 110 and parallel to the vertical direction 202.
- Each of the supports 122a1, 122b1, 124a1, and 124b1 is connected to a corresponding one of the first to fourth arms 122a, 122b, 124a, and 124b, and serves to support the cradles 151 to 154. do.
- first support 122a1 may be connected to the first arm 122a
- second support 122b1 may be connected to the second arm 122b
- third support 124a1 May be connected to the third arm 124a
- fourth support part 124b1 may be connected to the fourth arm 124b.
- the cradles 151-154 are connected between the first and second arms 122a and 122b and the third and fourth arms 124a and 124b.
- each of the first and second cradles 151 and 152 may be connected to the first support part 122a1, and the other end of each of the first and second cradles 151 and 152 may be connected to the third support part 124a. have.
- the first cradle 151 may be positioned above the second cradle 152, and the horizontal guide ( The first cradle 151 may be spaced farther than the second cradle 152 in the horizontal direction 201 from the center line 301 of the 110.
- the separation distance from the center line 301 of the horizontal guide 110 to the first cradle 151 may be greater than the separation distance from the center line 301 to the second cradle 152.
- each of the third and fourth cradles 153 and 154 may be connected to the second support 122b1, and the other end of each of the third and fourth cradles 153 and 154 may be connected to the fourth support 124b1.
- the third cradle 153 may be spaced farther than the fourth cradle 154 in the horizontal direction 201 from the center line 301 of the 110.
- the separation distance from the center line 301 of the horizontal guide 110 to the third cradle 153 may be greater than the separation distance from the center line 301 to the fourth cradle 154.
- each of the first to fourth cradles 151 to 154 may be a wafer (W1 to Wn, n> 1) to stably support the wafers W1 to Wn and n> 1. It may have grooves or slots spaced apart from each other that may be inserted, seated, or loaded.
- the laser emitter 130 is disposed in the horizontal guide 110 and emits a laser (L1).
- the laser emitter 130 may be disposed on the lower surface 112 of the horizontal guide 110, and the wafers W1 to, which are seated or loaded on the first to fourth cradles 151 to 154.
- Laser (L1) can be emitted toward Wn, a natural number of n> 1).
- the laser L1 of the laser emitter 130 may be emitted in the vertical direction 202.
- the laser detector 160 is disposed below the transfer arm 120 to face the laser emitter 130 spaced apart from the transfer arm 120.
- the laser detector 160 may be disposed under the first to fourth arms 122a, 122b, 124a and 124b and the cradles 151 to 154, and the first to fourth arms 122a. And 122b, 124a, and 124b and the cradles 151 to 154.
- the laser detector 160 detects or collects the laser L2 passing through the gap G between the wafers W1 to Wn, where n> 1, among the lasers L1 irradiated from the laser emitter 130.
- the laser collector 162, and a laser collector support 164 for supporting the laser collector 162 may be included. In other embodiments, the laser collector support 164 may be omitted.
- the laser L1 irradiated by the laser emitter 130 is a plurality of wafers W1 to Wn, n> 1 spaced apart from each other, seated or loaded on the first to fourth cradles 151 to 154. And overlap each other in the vertical direction 202.
- FIG. 4 shows the laser emitter 130 and the laser collector 162 shown in FIG. 2.
- the length X1 of the emission area in the horizontal direction 201 of the laser L1 irradiated by the laser emitter 130 is settled on the wafer of the first to fourth cradles 151 to 154. It may be greater than or equal to the length of the region (S). This is because the thickness of the wafers can be measured.
- the wafer seating area S includes a region in which a plurality of wafers W1 to Wn and a natural number of n> 1 are disposed and a region positioned between the plurality of wafers W1 to Wn and a natural number of n> 1. can do.
- one end of the emission area in the horizontal direction 201 of the laser L1 emitted by the laser emitter 130 is first wafer W1 seated or loaded in the first to fourth cradles 151 to 154.
- the other end of the emission area in the horizontal direction 201 of the laser L1 is seated or loaded on the first to fourth cradles 151 to 154. It can be aligned at one end or edge of.
- one end of the first wafer W1 may be an edge of the opposite side of one side of the first wafer W1 facing the second wafer W2, and one end of the last wafer Wn is immediately before the last one. It may be an edge of the opposite side of one surface of the last wafer (Wn) facing the wafer (Wn-1) of.
- the laser collector 162 is disposed below the first to fourth arms 122a, 122b, 124a, and 124b to align or correspond to the laser emitter 130 in the vertical direction 202.
- the laser collector 162 may be disposed below the first to fourth cradles 151 to 154, and the gaps G1 to Gk, 1 ⁇ , between the wafers W1 to Wn and n> 1.
- the laser L2 passing through k ⁇ n natural number) can be collected.
- some of the laser L1 emitted by the laser emitter 130 may not pass through the wafers W1 to Wn, n> 1 and thus may not be collected by the laser collector 162, and the laser emitter ( The remaining portion of the laser L1 emitted by the 130 may be collected in the laser collector 162 through the gaps G1 to Gk between the wafers W1 to Wn and a natural number of n> 1.
- the numbers Y1 to Yk and a number of 1 ⁇ k ⁇ n are collected by the laser collector 162. ) May be located.
- the lengths of the regions P1 to Pm that are not captured by the laser collector 162 may correspond to the thicknesses of the wafers W1 to Wn, n> 1.
- Non-captured region (eg, P2) located between two adjacent regions (eg, Y1 and Y2) among the regions (Y1 to Yk, 1 ⁇ k ⁇ n), which are collected by the laser collector 162. ) May correspond to the thickness of the wafer (eg, W2).
- the length of any one of the non-captured regions may correspond to the thickness of the corresponding wafer.
- the controller (not shown) is based on the laser L1 irradiated from the laser emitter 130 of the wafer transfer device 100 and the laser collected by the laser collector 162, as described above with reference to FIG. 4.
- the thickness of each of the wafers W1 to Wn a natural number of n> 1, may be measured.
- the controller calculates the lengths of the non-captured regions P1 to Pm located between the regions Y1 to Yk captured by the laser collector 162, and based on each of the calculated lengths, the wafer The thickness of the wafer corresponding to each of the calculated lengths may be measured.
- the controller (not shown) may be configured separately from the wafer transfer apparatus 100, but is not limited thereto and may be configured to be included in the wafer transfer apparatus 100.
- FIG. 3 shows a wafer processing process using the wafer transfer device 100 shown in FIG. 1.
- the wafer processing process may include a wafer etching process, a wafer cleaning process, and a wafer drying process.
- the first treatment liquid 312 may be accommodated in the first treatment tank 301, and the second treatment liquid 314 may be accommodated in the second treatment tank 302. Dry gas 316 may be injected into the third treatment tank 303.
- Each of the first to third processing tanks 301 may be disposed with the laser detection unit 160 of the wafer transfer device 100 according to an embodiment, but is not limited thereto.
- the sensing unit 160 may be fixed to the horizontal guide unit 110 and move together with the horizontal guide unit 110.
- the wafers W1 to Wn may be loaded into the wafer transfer apparatus 100, and may be loaded using the laser emitter 130 and the laser detector 160 of the wafer transfer apparatus 100.
- the thickness of the loaded wafers W1 to Wn, a natural number of n> 1, can be measured.
- the wafers W1 to Wn, n> 1 may be transferred to the first processing tank 301 containing the first processing liquid 312 using the wafer transfer device 100, and the first processing may be performed. After the wafers W1 to Wn, n> 1 transferred to the bath 301 are immersed in the first processing liquid 312, the first processing process may be performed for a predetermined time.
- the first treatment liquid 312 may be an etching liquid, and the first treatment process may be an etching process, but is not limited thereto.
- the thickness of the wafers W1 to Wn, n> 1 is measured in real time during the first processing process using the laser emitter 130 and the laser detector 160 of the wafer transfer device 100. can do.
- the wafers W1 to Wn, n> 1 of natural water are taken out from the first processing liquid 312 using the wafer transfer apparatus 100, and the wafers having the first processing process completed are removed. 2 can be transferred to the treatment tank 302.
- the thicknesses of the wafers taken out from the first processing liquid 312 may be measured using the laser emitter 130 and the laser detector 160.
- the wafers (natural water having W1 to Wn, n> 1) transferred to the second processing tank 302 using the wafer transfer apparatus 100 are immersed in the second processing liquid 314 for a predetermined time.
- the treatment process can be performed.
- the second treatment liquid 314 may be a washing liquid, and the second treatment liquid may be a washing process, but is not limited thereto.
- the thickness of the wafers W1 to Wn, n> 1 is measured in real time during the second processing process using the laser emitter 130 and the laser detector 160 of the wafer transfer device 100. can do.
- the wafers W1 to Wn, a natural water of n> 1 are taken out from the second processing liquid 314 using the wafer transfer apparatus 100, and the wafers having the second processing process completed are removed. 3 can be transferred into the treatment tank 302.
- the thicknesses of the wafers taken out from the second processing liquid 314 may be measured using the laser emitter 130 and the laser detector 160.
- a third process of drying the wafers by releasing a drying gas 316 to the wafers (natural water having W1 to Wn, n> 1) transferred to the third processing tank 303 using the wafer transfer apparatus 100.
- the thickness of the wafers W1 to Wn, n> 1 may be measured in real time during the third processing process using the laser emitter 130 and the laser detector 160.
- the embodiment may not only transfer the wafer to the processing tank for the processing of the wafers, but also measure the thickness of the wafers in the processing process in real time. Since the embodiment does not use a separate thickness measuring device, it is possible to reduce the waste of time and manpower required for thickness measurement.
- the embodiment measures the thickness of the wafers in the processing process in real time, the thickness change of the wafers may be reflected in the processing process, thereby improving the accuracy of the processing process.
- FIG. 5 shows a front view of the transfer apparatus 200 according to another embodiment
- FIG. 6 shows a side view of the transfer apparatus 200 of FIG. 5.
- the same reference numerals as those in Figs. 1 and 2 denote the same configuration, and the description of the same configuration will be simplified or omitted.
- the wafer transfer device 200 includes a vertical guide 102, a transfer rail 105, a horizontal guide 110, a transfer arm 120, a laser emitter 130, And a laser detector 160, and laser detectors 170-1 and 170-2.
- the wafer transfer apparatus 200 may further include the laser sensing supports 170-1 and 170-2 and the controller 180 in the wafer transfer apparatus 100 illustrated in FIGS. 1 and 2.
- the laser sensing support units 170-1 and 170-2 are connected between the horizontal guide 110 and the laser sensing unit 160, and fix the laser sensing unit 160 to the horizontal guide 110.
- the first laser sensing support unit 170-1 may connect one end of the horizontal guide 110 to one end of the laser sensing unit 160, and the second laser sensing support unit 170-2 may be connected to the other end of the horizontal guide 110.
- the other end of the stage and the laser detector 160 may be connected.
- the first laser sensing support 170-1 may connect one end of the horizontal guide 110 to one end of the laser collector support 164
- the second laser sensing support 170-2 may be the horizontal guide 110.
- the other end of the and the other end of the laser collector support unit 164 may be connected.
- the laser detection unit 160 may be fixed to the horizontal guide 110 by the laser detection supports 170-1 and 170-2, the laser detection when the horizontal guide 110 moves in the horizontal direction or the vertical direction.
- the unit 160 may also move in the horizontal direction or the vertical direction together with the horizontal guide 110.
- the controller 180 is based on the information about the laser L1 irradiated from the laser emitter 130 of the wafer transfer device 200 and the information about the laser L2 captured by the laser collector 162. As described above with reference to FIG. 4, the thickness of each of the wafers W1 to Wn and a natural number of n> 1 may be measured.
- the laser detector 160 Since the laser detector 160 also moves in the horizontal or vertical direction together with the horizontal guide 110, the laser detector 160 for measuring the wafer thickness in each of the plurality of processing tanks 301 to 303 as shown in FIG. 3. No need to install
- the wafer transfer device 200 may move to the wafers W1 to Wn while the wafer transfer device 200 moves along the transfer rail 105. Thickness can be measured in real time.
- FIG. 7 is a flowchart illustrating a wafer processing method according to an embodiment.
- the embodiment processes wafers mounted on the transfer apparatuses 100 and 200 by using the transfer apparatuses 100 and 200 including the laser emitter 130 and the laser detector 160. The method is shown.
- the laser is irradiated to the wafers (W1 to Wn, n> 1 natural water) mounted on the holders 151 to 154 of the transfer apparatuses 100 and 200 by the laser emitter 130 (S110).
- the laser detector 160 detects a laser beam that has passed between the wafers W1 to Wn (n> 1 natural number) mounted on the transfer devices 100 and 200 (S120).
- the thicknesses of the wafers (W1 to Wn, n> 1 natural numbers) mounted on the transfer devices 100 and 200 are measured (S130).
- the thickness measurement of the wafers W1 to Wn, a natural number of n> 1, may be measured as described in FIG. 4.
- the wafers (W1 to Wn, n> 1) mounted on the transfer apparatuses 100 and 200 are processed (S140 to S160). .
- the measured thicknesses of the wafers (W1 to Wn, n> 1 natural number) are compared with a predetermined thickness value, and the processing result is determined whether the wafers (W1 to Wn, n> 1 natural number) are processed. Or the processing time can be controlled.
- a machining process is performed on the wafers mounted on the transfer apparatuses 100 and 200 (S150).
- the processing time for the wafers (W1 to Wn, n> 1) can be controlled. Can be.
- the processing time for the wafers (W1 to Wn, n> 1) can be increased. .
- the machining process for the wafers may include at least one of an etching process, a cleaning process, or a drying process illustrated in FIG. 3.
- the machining process for the wafers may include at least one of an etching process or a cleaning process shown in FIG. 3, and may further include a drying process shown in FIG. 3.
- the wafers processed by the processing step (S150) The thickness of (W1 to Wn, n> 1 natural number) is measured (S110 to S130).
- the thickness is measured by performing the steps S110 to S130.
- a processing process eg, an etching process
- S150 etching process
- the wafers etched and cleaned by the machining process S150 are measured by performing steps S110 to S130. Then, the measured thickness is compared with the preset thickness (S140). If the measured thickness is greater than the predetermined thickness, a processing process (eg, a cleaning process) for the wafers mounted on the transfer apparatus 100 or 200 may be performed (S150). On the other hand, when the measured thickness is less than or equal to the predetermined thickness, the machining process for the wafers may be stopped.
- a processing process eg, a cleaning process
- Embodiments can measure the thickness of the wafer before and after the machining process in real time, and by adjusting the progress of the subsequent machining process and the processing time of the processing process based on the measured thickness to ensure that the wafers are processed to the correct thickness Can be.
- the embodiment may be used in a process of transferring a wafer in a wafer manufacturing process.
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Abstract
Description
Claims (20)
- 수직 방향 또는 수평 방향으로 이동하는 가이드(guide);상기 가이드에 설치되고, 서로 이격된 웨이퍼들을 안착시키는 이송 아암;상기 가이드에 배치되고, 상기 이송 아암에 안착된 서로 이격된 웨이퍼들에 제1 레이저를 방출하는 레이저 방출부; 및상기 이송 아암 아래에 배치되고, 상기 제1 레이저 중에서 상기 서로 이격된 웨이퍼들 사이의 틈을 통과한 제2 레이저를 포집하는 레이저 감지부를 포함하는 웨이퍼 이송 장치.
- 제1항에 있어서,상기 레이저 방출부에서 조사되는 제1 레이저, 및 레이저 포집기에 의하여 포집되는 제2 레이저에 기초하여, 상기 서로 이격하는 웨이퍼들의 두께를 측정하는 제어부를 더 포함하는 웨이퍼 이송 장치.
- 제1항에 있어서,상기 제1 레이저의 수평 방향의 방출 영역의 일단은 상기 웨이퍼들 중 첫 번째 웨이퍼의 에지에 정렬되고, 상기 제1 레이저의 수평 방향의 방출 영역의 타단은 상기 웨이퍼들 중 마지막 번째 웨이퍼의 에지에 정렬되는 웨이퍼 이송 장치.
- 제1항에 있어서,상기 가이드와 상기 레이저 감지부 사이에 연결되며, 상기 레이저 감지부를 상기 가이드에 고정시키는 레이저 감지 지지부를 더 포함하는 웨이퍼 이송 장치.
- 제4항에 있어서,상기 레이저 감지 지지부는 상기 가이드와 함께 수평 또는 수직 방향으로 이동하는 웨이퍼 이송 장치.
- 제4항에 있어서, 상기 레이저 감지 지지부는,상기 가이드의 일단과 상기 레이저 감지부의 일단을 연결하는 제1 레이저 감지 지지부; 및상기 가이드의 타단과 상기 레이저 감지부의 타단을 연결하는 제2 레이저 감지 지지부를 포함하는 웨이퍼 이송 장치.
- 제1항에 있어서, 상기 이송 아암은,상기 가이드의 일단에 결합되는 제1 및 제2 아암들;상기 가이드의 타단에 결합되는 제3 및 제4 아암들;상기 제1 내지 제4 아암들과 연결되는 지지부들; 및상기 지지부들과 연결되고 상기 웨이퍼들이 거치되는 거치대들을 포함하는 웨이퍼 이송 장치.
- 제7항에 있어서,상기 제1 내지 제4 아암들은 상기 가이드에 결합된 부분을 축으로 회전 이동하는 웨이퍼 이송 장치.
- 제7항에 있어서, 상기 거치대들은,일단이 상기 제1 지지부에 연결되고, 타단이 제3 지지부에 연결되는 제1 및 제2 거치대들; 및일단이 상기 제2 지지부에 연결되고, 타단이 제4 지지부에 연결되는 제3 및 제4 거치대들을 포함하는 웨이퍼 이송 장치.
- 제9항에 있어서,상기 제1 내지 제4 거치대들은 상기 웨이퍼들이 안착되는 슬러들(slots)을 포함하는 웨이퍼 이송 장치.
- 제1항에 있어서,상기 가이드를 수평 방향으로 이동시키는 이송 레일을 더 포함하는 웨이퍼 이송 장치.
- 제11항에 있어서, 상기 가이드는,상기 이송 레일에 의하여 수평 방향으로 이동하고, 상기 이송 아암과 연결되는 수평 가이드; 및상기 수평 가이드와 연결되고, 상기 수평 가이드를 수직 방향으로 이동시키는 수직 가이드를 포함하는 웨이퍼 이송 장치.
- 수직 방향 또는 수평 방향으로 이동하는 가이드(guide);상기 가이드와 연결되고, 서로 이격된 웨이퍼들을 안착시키는 이송 아암;상기 가이드에 배치되고, 상기 이송 아암에 안착된 서로 이격된 웨이퍼들에 레이저를 방출하는 레이저 방출부;상기 이송 아암 아래에 배치되고, 상기 서로 이격된 웨이퍼들 사이의 틈을 통과한 레이저를 포집하는 레이저 감지부; 및상기 레이저 포집기에 의하여 포집되지 않은 영역들의 길이들을 산출하고, 산출된 길이들 각각에 대응하는 웨이퍼의 두께를 측정하는 제어부를 포함하는 웨이퍼 이송 장치.
- 레이저를 조사하는 레이저 방출부 및 레이저를 감지하는 레이저 감지부를 구비하는 웨이퍼 이송 장치에 장착된 웨이퍼들을 가공하는 웨이퍼 가공 방법에 있어서,상기 레이저 방출부에 의하여, 상기 웨이퍼 이송 장치에 장착된 웨이퍼들에 레이저를 조사하는 레이저 조사 단계;상기 레이저 감지부에 의하여 상기 웨이퍼 이송 장치에 장착된 웨이퍼들 사이를 통과한 레이저를 감지하는 레이저 감지 단계;상기 감지된 결과에 따라 상기 웨이퍼 이송 장치에 장착된 웨이퍼들의 두께를 측정하는 두께 측정 단계; 및상기 측정된 두께에 기초하여, 상기 웨이퍼 이송 장치에 장착된 웨이퍼들을 가공하는 가공 단계를 포함하는 웨이퍼 가공 방법.
- 제14항에 있어서,상기 웨이퍼 이송 장치에 의하여 상기 웨이퍼들을 이송하는 단계를 더 포함하며,상기 레이저 조사 단계, 상기 레이저 감지 단계, 및 상기 두께 측정 단계는 상기 이송하는 단계 내에서 이루어지는 웨이퍼 가공 방법.
- 제14항에 있어서,상기 측정된 웨이퍼들의 두께를 기설정된 두께 값과 비교하는 비교 단계를 더 포함하며,상기 가공 단계는 상기 비교 단계에 의하여 비교된 결과에 따라 상기 웨이퍼들에 대한 가공 여부를 결정하거나 또는 가공 시간을 제어하는 웨이퍼 가공 방법.
- 제14항에 있어서,상기 가공 단계는 상기 웨이퍼들을 식각하는 단계인 웨이퍼 가공 방법.
- 제16항에 있어서,상기 가공 단계 이후에 상기 레이저 조사 단계, 상기 레이저 감지 단계, 및 상기 두께 측정 단계를 수행하여, 상기 가공 단계에 의하여 가공된 웨이퍼들의 두께를 측정하는 두께 측정 단계; 및상기 가공 단계에 의하여 가공된 웨이퍼들의 측정된 두께가 기설정된 두께와 동일하게 될 때까지, 상기 레이저 조사 단계, 상기 레이저 감지 단계, 상기 두께 측정 단계, 상기 비교 단계, 및 상기 가공 단계를 반복 수행하는 단계를 더 포함하는 웨이퍼 가공 방법.
- 제17항에 있어서, 상기 가공 단계는,상기 식각 단계에서 식각된 웨이퍼들을 세정하는 세정 단계를 더 포함하는 웨이퍼 가공 방법.
- 제19항에 있어서, 상기 가공 단계는,상기 세정 단계에서 세정된 웨이퍼들을 건조하는 건조 단계를 더 포함하는 웨이퍼 가공 방법.
Priority Applications (4)
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US15/541,631 US10192794B2 (en) | 2015-01-22 | 2015-06-17 | Wafer transfer device |
CN201580074090.1A CN107210255B (zh) | 2015-01-22 | 2015-06-17 | 晶片传送设备 |
JP2017536278A JP6486478B2 (ja) | 2015-01-22 | 2015-06-17 | ウエハー移送装置 |
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- 2015-06-17 CN CN201580074090.1A patent/CN107210255B/zh active Active
- 2015-06-17 US US15/541,631 patent/US10192794B2/en active Active
- 2015-06-17 JP JP2017536278A patent/JP6486478B2/ja active Active
- 2015-06-17 WO PCT/KR2015/006131 patent/WO2016117777A1/ko active Application Filing
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CN107210255B (zh) | 2020-05-05 |
KR101680214B1 (ko) | 2016-11-28 |
JP2018509751A (ja) | 2018-04-05 |
KR20160090515A (ko) | 2016-08-01 |
US10192794B2 (en) | 2019-01-29 |
DE112015006031T5 (de) | 2017-09-28 |
US20180005907A1 (en) | 2018-01-04 |
DE112015006031B4 (de) | 2022-05-12 |
CN107210255A (zh) | 2017-09-26 |
JP6486478B2 (ja) | 2019-03-20 |
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