WO2022153887A1 - 塗布処理装置、塗布処理方法及びコンピュータ記憶媒体 - Google Patents
塗布処理装置、塗布処理方法及びコンピュータ記憶媒体 Download PDFInfo
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- WO2022153887A1 WO2022153887A1 PCT/JP2022/000015 JP2022000015W WO2022153887A1 WO 2022153887 A1 WO2022153887 A1 WO 2022153887A1 JP 2022000015 W JP2022000015 W JP 2022000015W WO 2022153887 A1 WO2022153887 A1 WO 2022153887A1
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- substrate
- coating liquid
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- supply nozzle
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- 238000000576 coating method Methods 0.000 title claims abstract description 113
- 239000011248 coating agent Substances 0.000 title claims abstract description 108
- 230000002093 peripheral effect Effects 0.000 claims abstract description 62
- 239000000758 substrate Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims description 113
- 238000012545 processing Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 8
- 238000003672 processing method Methods 0.000 claims description 3
- 235000012431 wafers Nutrition 0.000 description 58
- 230000001681 protective effect Effects 0.000 description 48
- 238000005530 etching Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—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
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/6715—Apparatus for applying a liquid, a resin, an ink or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/08—Spreading liquid or other fluent material by manipulating the work, e.g. tilting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
- B05C11/1023—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target responsive to velocity of target, e.g. to web advancement rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
- B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
- B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—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
- H01L21/683—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 supporting or gripping
- H01L21/6838—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 supporting or gripping with gripping and holding devices using a vacuum; Bernoulli devices
Definitions
- the present disclosure relates to a coating processing apparatus, a coating processing method, and a computer storage medium.
- a process of applying a coating liquid to the peripheral edge of a substrate such as a semiconductor wafer (hereinafter, may be simply referred to as a wafer) has been performed.
- Patent Document 1 describes a rotation holding portion that horizontally holds and rotates a circular substrate, a nozzle that supplies a coating liquid to form a coating film on the peripheral edge of the surface of the substrate, and the above.
- the moving mechanism for moving the nozzle, the rotation of the substrate by the rotation holding portion, and the coating liquid from the nozzle.
- a peripheral coating device including a control unit that outputs a control signal for controlling discharge and movement of a nozzle by a movement mechanism is described.
- the control unit moves the coating liquid supply position from the outside of the substrate toward the peripheral edge of the substrate while rotating the substrate and supplying the coating liquid from the nozzle, and when the substrate is viewed in a plane.
- the coating liquid is applied to a wedge shape whose angle is 10 ° or less, then the movement of the nozzle is stopped while continuing the rotation of the substrate and the supply of the coating liquid, and the coating liquid is applied in a strip shape along the peripheral edge of the substrate.
- the coating liquid is applied, and the end portion of the coating liquid applied in a strip shape comes into contact with the coating liquid applied in the wedge shape, and a control signal is output so that the coating liquid is applied over the entire circumference of the substrate.
- the technique according to the present disclosure accurately forms a coating film on the side surface of the peripheral edge of the substrate.
- One aspect of the present disclosure is a coating processing device that applies a coating liquid to the peripheral edge portion of a substrate, and the holding rotating portion that holds and rotates the substrate and the peripheral edge portion of the substrate that is held by the holding rotating portion. It has a coating liquid supply nozzle for supplying the coating liquid, a moving mechanism for moving the coating liquid supply nozzle, a holding rotation unit, the coating liquid supply nozzle, and a control unit for controlling the moving mechanism.
- the control unit controls the movement mechanism to supply the coating liquid by the coating liquid supply nozzle while rotating the holding rotating unit that holds the substrate, and controls the movement mechanism to push the coating liquid supply nozzle at the first speed.
- the second speed is faster than the first speed by controlling the movement mechanism while moving the coating liquid from the outer periphery of the substrate to a predetermined position on the peripheral edge on the substrate and then supplying the coating liquid by the coating liquid supply nozzle. It is configured to control the movement of the coating liquid supply nozzle from the predetermined position to the outside of the periphery of the substrate at the speed of.
- a coating film can be accurately formed on the side surface of the peripheral edge of the substrate.
- a series of photolithography steps including a resist coating process of supplying a resist liquid onto a wafer to form a resist film are performed, and a predetermined resist pattern is formed on the wafer.
- the above series of processing is performed by a coating development processing system equipped with various liquid processing devices for processing wafers, a heat treatment device, a transfer device for transporting wafers, and the like. Further, the wafer after the photolithography process may be subjected to an etching process or the like after that, and a series of processes of the photolithography process may be performed again.
- the peripheral edge portion of the wafer W is generally the zone Z1 of the flat portion on the upper surface side, the zone Z2 of the slope continuing from the zone Z1, and the vertical side end surface (periphery edge) continuing from the zone Z2. It is divided into a zone Z3 which is an end surface on the side of the portion, a zone Z4 on the slope which continues from the zone Z3, and a zone Z5 which is a flat portion on the lower surface side which continues from the zone Z4.
- the protective film P is formed for the zones Z1, zone Z2, and zone Z3 which are easily damaged by the etchant.
- the protective film P for example, a resist film made of a resist solution is used.
- Such peripheral coating treatment has been conventionally performed by a peripheral coating processing apparatus.
- the protective liquid supply nozzle N forming the protective film shown in FIG. 2 is discharged from the periphery of the wafer W while rotating the wafer by a holding rotating portion such as a spin chuck that holds the wafer. It is moved from the outside to the center side of the wafer W, stopped at the end of the coating region on the center side of the wafer W, and then the protective liquid supply nozzle N is retracted to the outside of the peripheral portion of the wafer W again.
- the protective film P is formed on the zones Z1, zone Z2, and zone Z3 at the peripheral edge of the wafer W.
- the rotation speed of the holding rotating portion such as a spin chuck is adjusted.
- the cup C shown in FIG. 2 is arranged outside the holding rotating portion of the spin chuck or the like, but when forming the protective film in the desired region of the zone Z3 as described above, the holding rotating portion When the is rotated at high speed, the protective liquid is scattered to the inner surface of the block body provided on the edge of the cup C, particularly the edge of the cup C described later, and the dirt D due to the protective liquid adheres to the inner surface of the edge of the cup C. I found out that I would do it.
- the technique according to the present disclosure suppresses the adhesion of the protective liquid to the inner edge of the cup when applying the coating liquid to the peripheral edge of the substrate such as a wafer, and accurately applies the protective film to the side surface of the peripheral edge.
- FIG. 3 is a diagram schematically showing a longitudinal side surface of the coating processing apparatus 1 according to the embodiment
- FIG. 4 is a diagram schematically showing a plane.
- the coating processing apparatus 1 is configured as an apparatus for forming a protective film by applying, for example, a resist liquid as a protective liquid on the peripheral edge of the wafer W.
- the coating processing device 1 includes a spin chuck 10 as a holding rotation unit.
- the spin chuck 10 is configured to horizontally hold the wafer W, which is a circular substrate having a diameter of, for example, 300 mm by vacuum suction.
- the spin chuck 10 is connected to a rotary drive unit 11 including a motor and the like.
- the rotation drive unit 11 rotates the spin chuck 10 vertically at a rotation speed corresponding to a control signal output from the control unit 100 described later.
- Wafer W is transferred to and from the spin chuck 10 by raising and lowering three support pins 12 (only two are shown in the figure for convenience of illustration) that support the back surface of the wafer W.
- the support pin 12 is provided on the base 13, and the base 13 can be raised and lowered by the drive of the raising and lowering mechanism 14.
- a guide ring 20 having a chevron-shaped cross section is provided on the lower side of the spin chuck 10, and an annular outer peripheral wall 21 extending downward is provided on the outer peripheral edge of the guide ring 20.
- the cup 22 is arranged so as to surround the spin chuck 10 and the guide ring 20. That is, the cup 22 has a circular opening on the upper surface and has a form surrounding the wafer W held by the spin chuck 10.
- a cylindrical block body 22a is provided on the inner edge of the top of the cup 22. The block body 22a has a function of suppressing the mist in the cup 22 from being released to the outside and appropriately guiding the downflow into the cup 22.
- the upper side of the cup 22 is open so that the wafer W can be delivered to the spin chuck 10.
- a gap 23 forming a discharge path is formed between the inner peripheral surface of the cup 22 and the outer peripheral wall 21 of the guide ring 20.
- the bottom portion 22b of the cup 22 is provided with an exhaust pipe 24 that rises upward from the bottom portion 22b.
- a drainage port 25 is provided at the bottom 22b of the cup 22.
- the coating processing device 1 includes a nozzle 30 as a coating liquid supply nozzle for supplying a protective liquid (coating liquid).
- a discharge port 30a is formed on the lower end surface of the nozzle 30.
- the nozzle 30 is connected to the resist liquid supply source 32 in which the resist liquid is stored via the resist liquid supply pipe 31.
- the resist liquid supply source 32 includes a pump, and the resist liquid is pressure-fed to the nozzle 30 side, and the pressure-fed resist liquid is discharged from the discharge port 30a.
- the resist liquid supply pipe 31 is provided with a supply device group 33 including a valve, a flow rate adjusting unit, and the like, and supplies, stops, and supplies the resist liquid to the nozzle 30 based on a control signal output from the control unit 100. Is controlled.
- the nozzle 30 is supported by an arm 41 extending in the horizontal direction as shown in FIG.
- the nozzle 30 is supported in the vertical direction in FIG. 3, but in reality, as shown in FIG. 5 described later, in a plan view with respect to the tangential direction of the wafer W, a predetermined angle, for example, about 30 degrees. It is arranged diagonally and faces the outside of the wafer W. Further, the wafer W is arranged at a predetermined angle, for example, about 30 degrees, instead of being perpendicular to the horizontal plane of the wafer W. The arrangement angle of these nozzles 30 is determined in an arbitrary range.
- the nozzle 30 is connected to the moving mechanism 42 via the arm 41.
- the moving mechanism 42 can move along the guide rail 43 extending in the lateral direction, and can raise and lower the arm 41. Then, the moving mechanism 42 moves according to the control signal from the control unit 100, and the movement of the moving mechanism 42 causes the nozzle 30 to move between the standby position 44 provided outside the cup 22 and the peripheral edge of the wafer W. Can be done. Further, the moving distance, the moving speed, and the moving direction of the moving mechanism 42 are also controlled by the control signal from the control unit 100.
- the coating processing device 1 having the above configuration is controlled by the control unit 100 as described above.
- the control unit 100 is composed of, for example, a computer equipped with a CPU, a memory, or the like, and has a program storage unit (not shown).
- the program storage unit stores programs that control various processes in the coating processing apparatus 1.
- the program may be recorded on a computer-readable storage medium H and may be installed on the control unit 100 from the storage medium.
- the storage medium H may be temporary or non-temporary.
- the rotation drive unit 11 rotates the wafer W.
- the nozzle 30 is moved from the standby position 44 shown in FIG. 3 to the center side of the wafer W, and as shown in FIG. 5A, inside the cup 22 and outside the periphery of the wafer W.
- the discharge of the resist liquid is started at a position between the inner peripheral surface of the block body 22a of the cup 22 and the outer end portion of the wafer W.
- the wafer W is moved to a predetermined position on the peripheral edge of the wafer W at a first speed, for example, 1 to 10 mm / sec. (Scan-in).
- the predetermined position is a position where the radial width of the desired protective film to be formed by the resist liquid can be realized.
- the width of this protective film is set depending on the characteristics and properties of the protective film to be formed and the type of subsequent etching treatment, and is, for example, about 1 to 5 mm.
- the nozzle 30 is moved to a second speed higher than the first speed described above, for example, at a speed exceeding 50 mm / sec., Preferably at a speed of 80 to 200 mm / sec. ,
- the predetermined position shown in FIG. 5B is moved outward from the periphery of the wafer W (scanout). After that, the discharge of the resist liquid is stopped, and then the nozzle 30 is moved to the standby position 44.
- the protective film P is formed on the zones Z1, zone Z2, and zone Z3 of the peripheral edge of the wafer W. Will be done. Then, it was confirmed that the dirt D adhering to the inner surface of the edge portion of the cup C as shown in FIG. 2 which was conventionally seen does not occur. More specifically, it was confirmed that the protective liquid was scattered on the inner peripheral surface of the block body 22a and dirt D was not generated on the inner peripheral surface of the block body 22a. If the resist liquid adheres to the block body 22a and stain D is generated, there is a possibility that the resist liquid is scattered beyond the block body 22a to the outer surface of the cup 22.
- the resist liquid PL scattered on the inner peripheral surface of the block body 22a may collide with the inner peripheral surface and bounce off on the wafer W, and may adhere to the region where the resist liquid is not applied. Then, when the resist liquid adheres and accumulates on the inner peripheral surface of the block body 22a, the risk of such rebound increases.
- the inner surface of the cup 22 can be cleaned with a cleaning solution such as a solvent, but the block body 22a is difficult to clean. Therefore, suppressing or preventing the protective liquid from splashing on the inner peripheral surface of the block body 22a can solve these problems.
- the time during which the resist liquid PL scatters due to such collision is shortened as much as possible, the amount of the protective liquid scattered and adhered to the inner surface of the edge portion of the cup 22 and the inner peripheral surface of the block body 22a can be suppressed by that amount. ..
- the speed at the time of scanning out of the nozzle 30 is made higher than the speed at the time of scanning out of the nozzle 30, so that the protective film P which is not completely dried is used.
- the time during which the discharged resist liquid PL collides can be shortened, whereby the scattered resist liquid PL can be prevented from adhering to the inner surface of the edge portion of the cup 22, particularly the inner peripheral surface of the block body 22a. can.
- this kind of protective film P needs to be formed with respect to the zone Z1, the zone Z2, and the zone Z3 at the peripheral edge of the wafer W, and the formed region in the zone Z3 is the upper end. It is preferable to cover the area from 60 to 80%.
- the control of such a forming region is performed by the rotation speed of the wafer W while the resist liquid which is the protective liquid is discharged by the nozzle 30.
- the protective film P wraps around not only the zone Z3 but also the zone Z4, which hinders the subsequent transportation and processing.
- the protective film P may not reach the zone Z3 and may cover only the zones Z1 and Z2. Zone Z3 cannot be protected during the etching process, which is the purpose of the above.
- the rotation speed of the wafer W at the time of discharging the protective liquid.
- the resist liquid PL scattered at the time of scanout is performed. May adhere to the inner surface of the edge portion of the cup 22 or the inner peripheral surface of the block body 22a. Therefore, while arbitrarily controlling the rotation speed of the wafer W at the time of discharging the protective liquid, how to prevent such protective liquid PL from adhering to the inner edge portion of the cup 22, particularly the inner peripheral surface of the block body 22a. was an extremely difficult problem.
- the speed at the time of scanning out of the nozzle 30 is made higher than the speed at the time of scanning in, so that the inner edge portion of such a cup 22, particularly the block body 22a Since it is possible to suppress the adhesion of the protective liquid to the inner peripheral surface of the wafer W, it is possible to arbitrarily control the rotation speed of the wafer W by focusing only on the control of the region where the protective film P is formed on the zone Z3. ing. Therefore, the technique according to the present disclosure can accurately form a coating film on the side surface of the peripheral edge of the substrate, and the resist liquid PL adheres to the inner edge of the cup, particularly the inner peripheral surface of the block body 22a. It can be suppressed.
- the peripheral portion of the wafer W can be contained in the range of 60 to 80%, and the resist liquid PL, which is the protective liquid, can be appropriately suppressed from adhering to the inner edge portion of the cup 22.
- Coating processing device 10 Spin chuck 11 Rotating drive unit 12 Support pin 13 Base 14 Elevating mechanism 20 Guide ring 21 Outer wall 22 Cup 22a Block 23 Gap 24 Exhaust pipe 25 Drainage port 30 Nozzle 30a Discharge port 31 Resist liquid supply pipe 32 Resist liquid supply source 33 Supply equipment group 41 Arm 42 Movement mechanism 43 Guide rail 100 Control unit H Storage medium P Protective film PL Resist liquid W Wafer Z1 to Z5 Zone
Abstract
Description
ブロック体22aにレジスト液が付着して汚れDが発生するということは、ブロック体22aを越えてカップ22の外面にまでレジスト液が飛散している可能性がある。またブロック体22aの内周面に飛散したレジスト液PLが、当該内周面に衝突してウェハW上に跳ね返り、レジスト液が塗布されていない領域に付着してしまうおそれもある。そしてレジスト液がブロック体22aの内周面に付着堆積していくと、そのような跳ね返りのリスクも高まっていく。一方で、カップ22の内面であれば、溶剤等の洗浄液で洗浄可能であるが、ブロック体22aの洗浄は難しいという面がある。したがってブロック体22aの内周面に保護液が飛び散ることを抑制、防止することは、これらの課題を解決することができる。
10 スピンチャック
11 回転駆動部
12 支持ピン
13 基台
14 昇降機構
20 ガイドリング
21 外周壁
22 カップ
22a ブロック体
23 隙間
24 排気管
25 排液口
30 ノズル
30a 吐出口
31 レジスト液供給管
32 レジスト液供給源
33 供給機器群
41 アーム
42 移動機構
43 ガイドレール
100 制御部
H 記憶媒体
P 保護膜
PL レジスト液
W ウェハ
Z1~Z5 ゾーン
Claims (13)
- 基板の周縁部に塗布液を塗布する塗布処理装置であって、
基板を保持して回転させる保持回転部と、
前記保持回転部によって保持されている基板の周縁部に塗布液を供給する塗布液供給ノズルと、
前記塗布液供給ノズルを移動させる移動機構と、
前記保持回転部、前記塗布液供給ノズル、及び前記移動機構を制御する制御部と、を有し、
前記制御部は、前記基板を保持した前記保持回転部を回転させながら、
前記塗布液供給ノズルにより塗布液を供給しつつ、前記移動機構を制御して第1の速度で前記塗布液供給ノズルを前記基板の周辺外方から前記基板上の周縁の所定位置まで移動させ、
その後前記塗布液供給ノズルにより塗布液を供給しつつ、前記移動機構を制御して前記第1の速度よりも高速な第2の速度で前記塗布液供給ノズルを前記所定位置から前記基板の周辺外方へ移動させる制御を行うように構成された、塗布処理装置。 - 前記第2の速度は、50mm/secを超える速度である、請求項1に記載の塗布処理装置。
- 前記保持回転部の回転速度は、500rpm以上である、請求項1に記載の塗布処理装置。
- 前記第2の速度は、50mm/secを超える速度であり、前記保持回転部の回転速度は、500rpm以上である、請求項1に記載の塗布処理装置。
- 前記保持回転部の回転速度は、800rpm~2000rpmである、請求項4に記載の塗布処理装置。
- 基板の周縁部に塗布液を塗布する塗布処理方法であって、
前記基板を回転させながら、塗布液供給ノズルにより塗布液を供給しつつ、第1の速度で前記塗布液供給ノズルを前記基板の周辺外方から前記基板上の周縁の所定位置まで移動させ、
その後前記塗布液供給ノズルにより塗布液を供給しつつ、前記第1の速度よりも高速な第2の速度で前記塗布液供給ノズルを前記所定位置から前記基板の周辺外方へ移動させる、塗布処理方法。 - 前記第2の速度は、50mm/secを超える速度である、請求項6に記載の塗布処理方法。
- 前記基板の回転速度は、500rpm以上である、請求項6に記載の塗布処理方法。
- 前記第2の速度は、50mm/secを超える速度であり、前記保持回転部の回転速度は、500rpm以上である、請求項6に記載の塗布処理方法。
- 前記保持回転部の回転速度は、800rpm~2000rpmである、請求項9に記載の塗布処理方法。
- 基板の周縁部に塗布液を塗布する塗布処理方法を、塗布処理装置によって実行させるように、当該塗布処理装置を制御する制御部のコンピュータ上で動作するプログラムを格納した読み取り可能なコンピュータ記憶媒体であって、
前記塗布処理装置は、
前記基板を保持して回転させる保持回転部と、前記保持回転部によって保持されている基板の周縁部に塗布液を供給する塗布液供給ノズルと、前記塗布液供給ノズルを移動させる移動機構を有し、
前記塗布処理方法は、
前記基板を回転させながら、前記塗布液供給ノズルにより塗布液を供給しつつ、第1の速度で前記塗布液供給ノズルを前記基板の周辺外方から前記基板上の周縁の所定位置まで移動させ、
その後前記塗布液供給ノズルにより塗布液を供給しつつ、前記第1の速度よりも高速な第2の速度で前記塗布液供給ノズルを前記所定位置から前記基板の周辺外方へ移動させる、
コンピュータ記憶媒体。 - 前記第2の速度は、50mm/secを超える速度である、請求項11に記載のコンピュータ記憶媒体。
- 前記基板の回転速度は、500rpm以上である、請求項11に記載のコンピュータ記憶媒体。
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