WO2007083358A1 - 基板処理装置および基板処理方法 - Google Patents
基板処理装置および基板処理方法 Download PDFInfo
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- WO2007083358A1 WO2007083358A1 PCT/JP2006/300560 JP2006300560W WO2007083358A1 WO 2007083358 A1 WO2007083358 A1 WO 2007083358A1 JP 2006300560 W JP2006300560 W JP 2006300560W WO 2007083358 A1 WO2007083358 A1 WO 2007083358A1
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- substrate
- gas
- liquid
- processing apparatus
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0406—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P52/00—Grinding, lapping or polishing of wafers, substrates or parts of devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0406—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H10P72/0408—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for drying
Definitions
- the present invention relates to a semiconductor wafer, a substrate for liquid crystal display device, a substrate for plasma display, a substrate for FED (Field Emission Display), a substrate for optical disk, a substrate for magnetic disk, a substrate for magneto-optical disk, and a photomask
- the present invention relates to a substrate processing apparatus and a substrate processing method for processing various substrates to be processed typified by a substrate.
- a process of supplying a processing liquid (chemical solution or pure water) to the surface of a semiconductor wafer (hereinafter simply referred to as “wafer”) as a substrate to be processed is performed.
- a processing liquid chemical solution or pure water
- a chemical solution for cleaning is supplied to the surface of the wafer, and then pure water is supplied to perform a rinsing process. Since pure water adheres to the wafer surface after the rinsing process, in order to remove the pure water, a drying process is performed to rotate the wafer at a high speed and shake off the pure water on the wafer surface.
- a typical substrate drying apparatus used for the drying process includes a spin chuck that rotates while holding a wafer horizontally, and a rotation drive mechanism that rotates the spin chuck at a high speed. Yes. With this configuration, the substrate is dried using the centrifugal force that acts on the pure water as it rotates, and the pure water is shaken off.
- Patent Document 1 Japanese Patent Laid-Open No. 10-41270
- the wafer surface is hydrophobic. Therefore, when pure water is supplied to the wafer surface for rinsing and the spin chuck is rotated at a high speed, the pure water film on the wafer is split into a large number of microdroplets. Move radially on the wafer surface. As a result, streak particles are radially formed on the wafer surface.
- the streak-like particles are a kind of watermark, and are different from a particle in a normal sense (foreign matter on the wafer surface). However, the particle counter that counts the number of particles on the wafer surface counts such streak particles without distinguishing them from normal particles.
- an object of the present invention is to provide a substrate processing apparatus and a substrate processing method capable of suppressing or preventing the generation of streak-like particles on the substrate surface by favorably removing the rinsing liquid from the substrate surface. Is to provide.
- the substrate processing apparatus includes a substrate holding mechanism (1, 101) capable of holding the substrate (W) in a posture in which one surface is directed upward, and the substrate holding
- a rinse liquid supply mechanism (15, 17, 112, 120) for supplying a rinse liquid to the one surface (upper surface) of the substrate held by the mechanism and a substrate held by the substrate holding mechanism are
- a substrate tilting mechanism 25, 102 that tilts the horizontal surface from a horizontal posture along a horizontal plane to a tilted posture in which the one surface is inclined at a predetermined angle with respect to the horizontal plane, and a surface of the substrate held by the substrate holding mechanism
- Substrate drying means (2, 103) for drying the substrate.
- the alphanumeric characters in parentheses indicate corresponding components in the embodiments described later. The same shall apply hereinafter in this section.
- the substrate is tilted by the substrate tilting mechanism after the rinsing liquid is supplied, so that fine droplets of the rinsing liquid remain on the substrate surface in the process of removing the rinsing liquid from the substrate surface. Can be suppressed. Then, the surface of the substrate can be dried by the substrate drying means. Thereby, the rinse liquid of the surface of a board
- the rinsing liquid on the substrate surface is moved downward while being in a liquid mass and eliminated, the rinsing liquid in which minute droplets remain on the surface of the substrate is further in a large liquid mass state. It will be excluded from the substrate surface. Thereby, it is possible to eliminate the rinse liquid on the substrate surface while suppressing or preventing the generation of streak-like particles.
- the “liquid mass” is an almost film-like liquid spreading over a predetermined area on the substrate surface. It is a lump. It is most preferable that the liquid mass remains in a single state during the removal of the rinse liquid, but it may be divided into several parts in the process of removing the rinse liquid. In other words, there are a plurality of liquid masses in the area where at least the rinsing liquid is excluded on the substrate surface (the area above the area where the liquid mass of the rinsing liquid is present) does not remain. Good
- the substrate to be treated may be a hydrophobic substrate or a hydrophilic substrate. However, in particular, microdroplets are likely to remain on the surface. It is valid.
- functional water such as carbonated water, electrolytic ion water, hydrogen water, magnetic water, or dilute ammonia (eg, about 1 ppm) ammonia water may be used as the rinse liquid.
- the trailing edge of the liquid mass moving on one surface of the substrate is
- the substrate is inclined so as to move at a speed of 3 to 20 mm.
- the trailing edge of the liquid mass formed on the substrate by the rinse liquid (the uppermost edge of the liquid mass) ) Can be reliably prevented from remaining on the substrate surface by tilting the substrate so that it moves at a speed of 3 to 20 millimeters per second. Thereby, streak-like particles can be more effectively suppressed.
- the substrate processing apparatus further includes an abutting member (5) that abuts a lower side end surface of the substrate in the inclined posture when the substrate is inclined by the substrate inclination mechanism.
- the rinsing liquid flowing down from the substrate can be guided by the contact member that contacts the lower end surface of the substrate. That is, the rinse liquid flows down along the contact member. Thereby, the rinse liquid can be efficiently removed from the substrate surface.
- the timing at which the abutting member abuts on the substrate may be any time during the period during which the substrate is tilted (hereinafter referred to as the substrate tilting period).
- the contact with the substrate may be performed only at the initial stage of the substrate tilt period, at the end of the substrate tilt period, or may be always performed during the substrate tilt period.
- the contact member may be a substrate clamping member provided in a substrate holding mechanism. A member provided separately from such a substrate clamping member may be used. Further, the contact member may be one or plural. Most preferably, when the substrate is tilted, it is in contact with the substrate end surface at the lowest position.
- the substrate processing apparatus controls the rinse liquid supply mechanism and the substrate tilt mechanism, and a part or the entire area of the one surface of the substrate held horizontally by the substrate holding mechanism is removed from the rinse liquid supply mechanism. It is preferable to further include control means (40, 110) for covering the substrate with a liquid film of the supplied rinsing liquid and then tilting the substrate by the substrate tilting mechanism. As a result, a liquid film of a rinsing liquid covering a part or the entire surface of the substrate surface is formed on the upper surface of the substrate.
- the substrate surface does not come into contact with oxygen, and since it is possible to move from this large liquid film state to the rinsing liquid removal process, the rinsing liquid is transferred to the substrate. It can be eliminated well from the upper surface of the surface.
- the substrate holding means (2) for rotating the substrate held by the substrate holding mechanism is provided, the substrate is stopped or rotated at a low speed so that the substrate surface is covered with a liquid film of a rinsing liquid. It is preferable.
- the control means further controls the substrate drying means, and after rinsing liquid is removed from the one surface by inclining the substrate by the substrate inclining mechanism, the substrate drying means It is preferable to dry the liquid component on the substrate.
- the substrate drying means since the surface of the substrate is dried after the substrate is tilted to remove the rinse liquid from the upper surface of the substrate, it is possible to suppress or prevent the movement of the micro droplets on the upper surface of the substrate. Thereby, generation
- the substrate drying means may include a substrate rotating means (2) for rotating the substrate held by the substrate holding mechanism.
- the control unit may rotate the substrate by the substrate rotation unit to shake off the droplets remaining on the end surface of the substrate.
- the control means tilts the substrate by the substrate tilting mechanism, thereby causing the base to tilt. After removing the rinsing liquid from one surface of the plate, the substrate tilting mechanism returns the substrate to the horizontal posture from the tilted posture, and then the substrate is rotated by the substrate rotating means and remains on the end surface of the substrate. The droplet may be shaken off.
- the substrate is rotated by the substrate rotating means after returning the substrate to the horizontal posture, and the droplets on the substrate end surface are shaken off. It is possible to prevent scattering upward. Further, when a substrate holding mechanism capable of holding and rotating the substrate is used as the substrate rotating means, when tilting the substrate, only the substrate that does not need to tilt the substrate holding mechanism itself may be tilted. Therefore, the configuration of the substrate tilting mechanism can be simplified.
- the substrate drying means may include an infrared ray generating means (135) for irradiating the substrate held by the substrate holding mechanism with infrared rays.
- an infrared ray generating means (135) for irradiating the substrate held by the substrate holding mechanism with infrared rays According to this configuration, it is possible to evaporate and remove liquid components (including liquid droplets on the substrate end face) on the substrate by irradiating with infrared rays rather than rotating the substrate at high speed, and to dry the substrate. That is, in the case of this configuration, the substrate can be dried in a non-rotating state or a low rotating state.
- the substrate is arranged between the infrared ray generating means and the substrate held by the substrate holding mechanism, and at least the substrate among the infrared rays irradiated from the infrared ray generating means. It is preferable to further include a filter plate (137) that absorbs infrared rays having a wavelength that is absorbed by the substrate held by the holding mechanism and transmits infrared rays having other wavelengths.
- a filter plate (137) that absorbs infrared rays having a wavelength that is absorbed by the substrate held by the holding mechanism and transmits infrared rays having other wavelengths.
- the substrate drying means a gas that has been heated to room temperature (for example, about 23 ° C) or heated (for example, 40 ° C to 150 ° C) with respect to the substrate held by the substrate holding mechanism is used.
- a gas supply mechanism (18, 138) to be supplied may be applied.
- the gas supplied by the gas supply mechanism may be, for example, air or an inert gas (nitrogen, etc.) and such as IPA (isopropyl alcohol) vapor or HFE (no, id mouth fluoroether) vapor. It may be a mixed gas with an organic solvent vapor.
- IPA isopropyl alcohol
- HFE no, id mouth fluoroether
- a porous member such as a sponge that contacts the lower end of the tilted substrate is sucked.
- the substrate processing apparatus may further include an inert gas supply mechanism (18, 19) for supplying an inert gas to the one surface of the substrate held by the substrate holding mechanism.
- an inert gas supply mechanism (18, 19) for supplying an inert gas to the one surface of the substrate held by the substrate holding mechanism.
- the control means further controls the inert gas supply mechanism to tilt the substrate and remove the rinse liquid from the one surface thereof, at least the rinse liquid is present on the one surface of the substrate. It is preferable that the inert gas is supplied from the inert gas supply means to the excluded area.
- boundary zone the exposed area of the substrate surface and the boundary area between the exposed area and the area where the rinse liquid is present
- the substrate processing apparatus includes a blocking member (10) having a substrate facing surface (11) that can be disposed close to the one surface of the substrate held by the substrate holding mechanism, and holding the blocking member on the substrate holding mechanism. It is preferable to further include a blocking member moving mechanism (21) for bringing the substrate close to or away from the one surface of the substrate.
- the control means further controls the blocking member moving mechanism, and when the inert gas from the inert gas supply means is supplied to one surface of the substrate, the blocking member faces the substrate. It is preferable that the blocking member moving mechanism is controlled so that the surface is arranged at a predetermined position close to one surface of the substrate.
- the inert gas is supplied to the space in a state where the substrate-facing surface of the blocking member is brought close to the upper surface of the substrate to limit the space near the upper surface.
- the inert gas is supplied to the space in a state where the substrate-facing surface of the blocking member is brought close to the upper surface of the substrate to limit the space near the upper surface.
- the substrate processing apparatus It is preferable to further include a blocking member tilting mechanism (60) for tilting the blocking member so that the substrate facing surface is tilted following the tilt of the substrate.
- a blocking member tilting mechanism 60 for tilting the blocking member so that the substrate facing surface is tilted following the tilt of the substrate.
- the substrate facing surface of the blocking member is also tilted accordingly, so that the substrate facing surface can be sufficiently close to the upper surface of the substrate. Therefore, during the period when the rinse liquid is removed from the upper surface of the substrate, the space near the upper surface of the substrate is well limited by the blocking member throughout. As a result, the periphery of the exposed area and the boundary area on the upper surface of the substrate can be surely made an inert gas atmosphere.
- the blocking member tilting mechanism may be the same tilting mechanism (60) as the substrate tilting mechanism.
- Such a tilting mechanism includes, for example, a blocking member holding mechanism (23) that holds the blocking member and a movable frame (61) that holds the substrate holding mechanism, and the movable frame is rotated around a predetermined horizontal axis.
- the rotation drive mechanism (65) to be moved may be configured. With this configuration, the blocking member and the substrate held by the substrate holding mechanism can be integrally tilted by rotating the movable frame.
- the inert gas supply means may supply the inert gas toward the one surface of the substrate at a flow rate smaller than the flow rate at which the liquid mass of the rinse liquid on the one surface of the substrate is destroyed. preferable.
- the rinsing liquid mass can be retained, so that the generation of streak particles associated with the destruction of the rinsing liquid mass is suppressed or prevented, and the exposed area on the upper surface of the substrate and the vicinity of the boundary area are inactive. A gas atmosphere can be obtained.
- the substrate processing apparatus further includes a rinsing liquid replenishing mechanism (50) for newly supplying a rinsing liquid to the rinsing liquid on the one surface of the substrate that has been tilted by the substrate tilting mechanism. .
- a rinsing liquid replenishing mechanism 50 for newly supplying a rinsing liquid to the rinsing liquid on the one surface of the substrate that has been tilted by the substrate tilting mechanism.
- the substrate processing apparatus is capable of holding the substrate substantially horizontally.
- Substrate holding mechanism (1) a rinsing liquid supply mechanism (15, 17) for supplying a rinsing liquid to the upper surface of the substrate held by the substrate holding mechanism, and a substrate held by the substrate holding mechanism.
- a gas knife mechanism (70) capable of forming a gas blowing region on the upper surface of the substrate by blowing gas on the upper surface and scanning the entire upper surface of the substrate in one direction in the gas blowing region; and the upper surface of the substrate
- a rinse liquid supply mechanism (77 to 80) for supplying a rinse liquid to an area downstream of the gas spray area in the scanning direction with respect to the gas spray area formed by the gas knife mechanism and the substrate holding mechanism.
- a substrate drying means (2) for drying the surface of the substrate.
- the gas knife mechanism blows gas onto the upper surface of the substrate, the gas blowing region on the upper surface of the substrate is moved in one direction, and the upper surface of the substrate is scanned, thereby rinsing liquid from the upper surface of the substrate. Is eliminated.
- the rinsing liquid is supplied to the substrate surface on the downstream side in the moving direction of the gas spraying region, the lysing liquid is kept in a large liquid mass that is difficult to cause the liquid mass to break up.
- the rinse liquid is removed by the gas knife mechanism while remaining in a large liquid mass (preferably a single liquid mass) on the upper surface of the substrate. As a result, the generation of streak particles can be suppressed or prevented.
- the substrate processing apparatus controls the substrate drying means, the rinse liquid supply mechanism, the gas knife mechanism, and the rinse liquid supply mechanism, and after the rinse liquid supply mechanism supplies the rinse liquid to the upper surface of the substrate,
- the upper surface of the substrate is scanned by scanning the upper surface of the substrate with the gas spray region formed by the gas knife mechanism and supplying the rinse liquid from the rinse liquid supply mechanism to the region downstream in the scanning direction of the gas spray region.
- the substrate drying means may include a substrate rotating means (2) for rotating the substrate held by the substrate holding mechanism.
- the control unit rotates the substrate by the substrate rotating unit to shake off the droplets remaining on the end surface of the substrate.
- the gas knife mechanism may form the linear gas blowing region (75, 81 to 85) on the upper surface of the substrate. According to this configuration, the rinse liquid can be efficiently removed from the upper surface of the substrate by moving the linear gas spray region.
- the gas knife mechanism may form a concave linear gas blowing region (81, 84) on the upper surface of the substrate, with a central portion set back toward the upstream side in the scanning direction of the gas blowing region.
- the linear gas spraying region has a shape in which the central portion is set back toward the upstream side in the moving direction, the rinse liquid is placed inside the linear gas spraying region. This rinsing solution can be removed from the upper surface of the substrate while collecting. Thereby, the division of the liquid mass of the rinse liquid can be more reliably suppressed or prevented.
- the substrate processing apparatus tilts the substrate held by the substrate holding mechanism from a horizontal posture in which the upper surface thereof is along a horizontal plane to an inclined posture in which the upper surface is inclined by a predetermined angle with respect to the horizontal plane. It is preferable to further include a substrate tilting mechanism (25).
- liquid droplets on the upper surface of the substrate can be more reliably removed by using the substrate tilt and the gas knife mechanism together.
- the rinse liquid is replenished to the area downstream of the gas knife in the scanning direction, it is possible to suppress or prevent breakage of the liquid mass of the rinse liquid on the upper surface of the substrate. It is possible to suppress or prevent droplets from remaining.
- a substrate processing method includes a substrate holding step of holding a substrate (W) in a posture in which one surface is directed upward by a substrate holding mechanism (1, 101), and the substrate holding method. Rinse the one surface (upper surface) of the substrate held by the substrate holding mechanism in the holding process After the rinsing liquid supplying step for supplying the liquid and the rinsing liquid supplying step, the substrate held by the substrate holding mechanism is set in a predetermined position with respect to the horizontal plane from the horizontal position where the one surface is along the horizontal plane.
- Inclining the substrate to the inclined posture inclined by an angle moves the rinsing liquid on the one surface to the lower side while forming a liquid mass on the one surface, and removes the substrate,
- the substrate tilting step is followed by a drying step of drying the surface of the substrate.
- the substrate tilting step is preferably a step of tilting the substrate so that the trailing edge of the liquid mass moving on one surface of the substrate moves at a speed of 3 to 20 millimeters per second. ,.
- a substrate processing method includes a substrate holding step of holding a substrate (W) substantially horizontally by a substrate holding mechanism (1), and a substrate held by the substrate holding mechanism in the substrate holding step.
- a rinsing liquid supplying step for supplying a rinsing liquid to the upper surface of the substrate, and after the rinsing liquid supplying step, gas is blown onto the upper surface of the substrate held by the substrate holding mechanism by a gas knife mechanism (70).
- a gas knife process (75, 81 to 85) is formed on the upper surface of the substrate in parallel with the gas knife process in which the entire area of the upper surface of the substrate is scanned in one direction in the gas spray area.
- a rinsing liquid replenishing step for supplying a rinsing liquid to an area downstream of the gas blowing area in the scanning direction with respect to the gas blowing area formed by the gas knife mechanism; After Hue as and rinse liquid supply step, and a drying step of drying the surface of the substrate
- the drying step may include a step of shaking off the droplets remaining on the end surface of the substrate by rotating the substrate held by the substrate holding mechanism.
- the drying step may include a step of irradiating the substrate held by the substrate holding mechanism with infrared rays from infrared ray generating means.
- the rinsing liquid supply step preferably includes a liquid film coating step of covering the entire surface of the one surface of the substrate held horizontally by the substrate holding mechanism in the substrate holding step with a liquid film of a rinsing liquid.
- the rinsing liquid supply process is performed through a liquid mass growth process in which a large liquid mass of the rinsing liquid is grown on the upper surface of the substrate while the substrate is stopped or in a low-speed rotation state. It is preferable.
- FIG. 1 is an illustrative view for explaining the configuration of a substrate processing apparatus according to a first embodiment of the present invention.
- FIG. 2 is a plan view of a spin chuck provided in the substrate processing apparatus.
- FIG. 3 is a block diagram for explaining an electrical configuration of the substrate processing apparatus.
- FIGS. 4 (a) to 4 (e) are diagrams for explaining the flow of substrate processing by the substrate processing apparatus.
- FIG. 5 is a time chart for explaining the contents of control by the control device.
- FIG. 6 is an illustrative view for explaining a modification of the first embodiment.
- FIG. 7 is an illustrative view for explaining a configuration of a modified example of the substrate tilting mechanism.
- FIG. 8 is a schematic perspective view for explaining the configuration of a substrate processing apparatus according to a second embodiment of the present invention.
- FIG. 9 is an illustrative view showing an entire configuration of a substrate processing apparatus of a second embodiment.
- FIG. 10 is a schematic cross-sectional view for explaining the configuration of a substrate processing apparatus according to a third embodiment of the present invention.
- FIG. 11 is a schematic plan view of a substrate processing apparatus according to the third embodiment.
- FIG. 12 is a block diagram for explaining a configuration for controlling the substrate processing apparatus according to the third embodiment.
- FIG. 13 is a flowchart for explaining an example of the operation of the substrate processing apparatus according to the third embodiment.
- FIG. 14 is an illustrative view showing an embodiment in which a pure water liquid mass on a substrate is eliminated by using a tilt of the substrate and a gas knife together.
- FIGS. 15 (a) to 15 (e) are illustrative views showing a modification of the shape of the gas spray region.
- FIG. 1 is an illustrative view for explaining the configuration of a substrate processing apparatus according to a first embodiment of the present invention.
- This substrate processing apparatus is a single-wafer type processing apparatus for performing processing with a processing liquid on a substantially circular substrate W such as a semiconductor wafer, and holds the substrate W in a substantially horizontal posture.
- a spin chuck 1 for rotating around a substantially vertical axis of rotation that passes through its center.
- the substrate W is a substrate whose device forming surface is a hydrophobic surface, such as a silicon wafer having a low-k film formed on the surface.
- Such a substrate W is held by the spin chuck 1 with its device formation surface (hydrophobic surface) facing upward.
- the spin chuck 1 is fixed to the upper end of the rotary shaft 3 rotated by the chuck rotation drive mechanism 2.
- the spin chuck 4 has a substantially disc-shaped spin base 4 and a plurality of peripheral portions of the spin base 4.
- a plurality of clamping members 5 for clamping the substrate W are provided at substantially equal angular intervals.
- the rotating shaft 3 is a hollow shaft, and a lower surface processing liquid supply pipe 6 to which a chemical solution or pure water as a processing liquid is selectively supplied is inserted into the rotating shaft 3.
- the lower surface processing liquid supply pipe 6 extends to a position close to the center of the lower surface of the substrate W held by the spin chuck 1, and a lower surface nozzle that discharges the processing liquid toward the center of the lower surface of the substrate W at the tip thereof. 7 is formed.
- a chemical solution from a chemical solution (for example, etching solution) supply source can be supplied to the lower surface treatment solution supply pipe 6 via a chemical valve 8 and pure water (deionized) is supplied from the pure water supply source. Water) can be supplied through the pure water valve 9.
- a chemical solution for example, etching solution
- pure water deionized
- a disc-shaped blocking plate 10 having a substrate facing surface 11 facing the upper surface of the substrate W and having a substrate facing surface 11 on the lower surface is provided.
- a rotating shaft 12 is fixed along the same axis as the rotating shaft 3 of the spin chuck 1.
- the rotary shaft 12 is a hollow shaft, and a processing liquid nozzle 15 for supplying a processing liquid to the upper surface of the substrate W is passed through the rotary shaft 12.
- the treatment liquid nozzle 15 can be supplied with chemical liquid from the chemical liquid valve 16 or pure water (deionized pure water, an example of a rinse liquid) from the pure water valve 17.
- a nitrogen gas supply passage for supplying nitrogen gas as an inert gas toward the center of the upper surface of the substrate W between the inner wall surface of the rotating shaft 12 and the outer wall surface of the processing liquid nozzle 15. 18 is formed.
- the nitrogen gas supplied from the nitrogen gas supply passage 18 is supplied to a space between the upper surface of the substrate W and the lower surface of the blocking plate 10 (substrate facing surface 11).
- Nitrogen gas is supplied to the nitrogen gas supply passage 18 via a nitrogen gas valve 19 and a flow rate adjusting unit 30.
- the flow rate adjusting unit 30 is for changing the supply flow rate of the nitrogen gas supplied to the nitrogen gas supply passage 18 (for example, changing it in two stages).
- the rotating shaft 12 is attached in a state of hanging from the vicinity of the tip of the arm 20 provided along a substantially horizontal direction.
- the shielding plate 10 is located close to the upper surface of the substrate W held by the spin chuck 1 and the retreat is largely retreated above the spin chuck 1.
- a blocking plate raising / lowering drive mechanism 21 for raising and lowering the position is provided.
- a blocking plate rotation drive mechanism 22 is provided for rotating the blocking plate 10 almost in synchronization with the rotation of the substrate W by the spin chuck 1.
- the substrate facing surface 11 of the shielding plate 10 is brought close to the upper surface of the substrate W, and nitrogen gas is introduced between the substrate facing surface 11 and the substrate W, so that the vicinity of the upper surface of the substrate W is brought into a nitrogen gas atmosphere. Can keep.
- FIG. 2 is a plan view of the spin chuck 1.
- the spin chuck 1 for example, three clamping members 5 are arranged at substantially equal intervals on the peripheral edge of the disc-shaped spin base 4.
- Each clamping member 5 has a support part 35 that supports the lower surface of the peripheral edge of the substrate W by point contact, and a clamping part 36 that abuts the peripheral end surface of the substrate W, and the support part 35 is centered around the vertical axis.
- the holding portion 36 can be in a holding state in which the holding portion 36 is in contact with the peripheral end surface of the substrate W, and a released state in which the holding portion 36 is retracted from the peripheral end surface of the substrate W. It has become.
- These clamping members 5 are driven synchronously by a clamping member drive mechanism 13 (see FIG. 1).
- a substrate tilt mechanism 25 for tilting the substrate W held by the spin chuck 1 is disposed on the side of the spin chuck 1.
- the substrate tilting mechanism 25 includes a substantially L-shaped swing arm 26 extending in the horizontal direction and the swinging mechanism 26.
- a substrate support member 27 provided on the upper surface of the distal end portion of the moving arm 26, a swing drive mechanism 28 that swings the swing arm 26 about the vertical axis around its base end portion, and the swing arm 26 ascending and descending Arm raising / lowering drive mechanism 29 is provided.
- the substrate support member 27 is moved between the upper surface of the spin base 4 and the lower surface of the substrate W in a state where the substrate W is held on the spin chuck 1 by swinging the swing arm 26 by the swing drive mechanism 28. Can get in. Further, by raising the swing arm 26 by the arm raising / lowering drive mechanism 29, the upper end of the substrate support member 27 is brought into contact with the lower surface of the peripheral edge of the substrate W, and the substrate support member 27 The peripheral edge can be supported and lifted.
- the substrate supporting member 27 lifts one portion of the peripheral portion of the substrate W, thereby changing the posture of the substrate W to a horizontal posture substantially parallel to the horizontal plane. Can be changed to an inclined posture inclined with respect to the horizontal plane.
- the spin chuck 1 has at least one of the plurality of holding members 5 positioned on the lower side with respect to the tilt direction, and enters the lower side of the substrate W. The rotation position is controlled so that the substrate support member 27 does not interfere with any of the clamping members 5.
- the three clamping members 5 when the three clamping members 5 are arranged at substantially equal intervals along the peripheral edge of the disc-shaped spin base 4, one of them supports the substrate with the center of rotation of the spin chuck 1 interposed therebetween.
- the rotational position of the spin chuck 1 is controlled so as to face the member 27.
- the rotational position of the spin chuck 1 is controlled by, for example, providing a rotational position sensor 39 (see FIG. 3) such as a rotary encoder in association with the spin chuck 1, and driving the chuck based on the output of the rotational position sensor 39. This can be achieved by overhauling mechanism 2.
- FIG. 3 is a block diagram for explaining an electrical configuration of the substrate processing apparatus.
- the operations of the chuck rotation drive mechanism 2, the clamping member drive mechanism 13, the shield plate lifting drive mechanism 21, the shield plate rotation drive mechanism 22, the swing drive mechanism 28, and the arm lift drive mechanism 29 are controlled by a computer 40. Is controlled by.
- the control device 40 further controls opening and closing of the chemical liquid valve 16, the pure water valve 17, the nitrogen gas valve 19, the chemical liquid valve 8, and the pure water valve 9.
- An output signal of a rotational position sensor 39 that detects the rotational position of the spin chuck 1 is input to the control device 40.
- FIGS. 4 (a) to 4 (e) are diagrams for explaining the flow of processing of the substrate W by the substrate processing apparatus.
- FIG. 4 (a) to 4 (e) are diagrams for explaining the flow of processing of the substrate W by the substrate processing apparatus.
- FIG. 5 is a time chart for explaining the contents of control by the control device 40.
- the spin chuck 1 is rotated / stopped (FIG. 5 (a)), the chemical valve 16 is opened / closed (FIG. 5 (b)), The pure water valve 17 is opened and closed (Fig. 5 (c)), the substrate tilting mechanism 25 is tilted (Fig. 5 (d)), and the nitrogen gas valve 19 is opened and closed (Fig. 5 (e)). Yes.
- the control device 40 When an unprocessed substrate W is delivered from the substrate transfer robot (not shown) to the spin chuck 1, the control device 40 first supplies a chemical solution to the substrate W as shown in FIG. 4 (a). The chemical treatment process to be supplied is executed. Specifically, the control device 40 controls the clamping member drive mechanism 13 to place the clamping member 5 in a clamping state in which the substrate W is clamped. Next, the control device 40 controls the chuck rotation driving mechanism 2 to rotate the spin chuck 1. At the same time, the control apparatus 40 opens the chemical liquid valves 8 and 16 to supply the chemical liquid from the processing liquid nozzle 15 toward the upper surface of the substrate W. At this time, the blocking plate 10 is retracted to a position spaced upward from the substrate W, and the pure water valve 17 is held in a closed state.
- the chemical solution is supplied to the upper and lower surfaces of the substrate W, and the substrate W is rotated in a horizontal posture together with the spin chuck 1, whereby the chemical solution spreads over the entire upper and lower surfaces of the substrate W, Substrate processing with this chemical proceeds.
- the nitrogen gas valve 19 may be opened or closed.
- the control device 40 executes a rinsing process for replacing the chemical on the substrate W with pure water, as shown in FIG. 4 (b). . That is, the control device 40 closes the chemical liquid valves 8 and 16 and opens the pure water valves 9 and 17 instead. As a result, pure water is supplied to the upper and lower surfaces of the substrate W, and the substrate W is rotated in a horizontal posture together with the spin chuck 1, and the pure water spreads over the entire upper and lower surfaces of the substrate W. Thus, the chemical solution is replaced with pure water on the upper and lower surfaces of the substrate W.
- the nitrogen gas valve 19 is opened and the substrate W is surrounded by a nitrogen gas atmosphere.
- the control device 40 controls the chuck rotation drive mechanism 2 to decelerate the rotation speed of the spin chuck 1 and stop its rotation. At this time, the control device 40 controls the rotation stop position of the spin chuck 1 based on the output of the rotation position sensor 39. That is, as described above, the base of the spin chuck 1 The rotation stop position of the spin chuck 1 is controlled so that any of the clamping members 5 is located at a position facing the substrate support member 27 of the plate tilt mechanism 25 and none of the clamping members 5 interferes with the substrate support member 27. Is done.
- the control device 40 After stopping the rotation of the spin chuck 1, the control device 40 closes the pure water valves 9 and 17 with a delay of a certain time (for example, about 5 seconds). Therefore, when the spin chuck 1 is rotated at a very low speed, the pure water liquid mass 45 starts to grow on the upper surface of the substrate W (liquid mass growth process). Then, until the pure water valves 9 and 17 are closed by the supply of pure water that continues even after the spin chuck 1 stops rotating, the upper surface of the substrate W has its surface as shown in FIG. A pure water liquid mass (liquid film) 45 covering almost the entire area grows (liquid film coating process). In the liquid film coating step after the rotation of the spin chuck 1 stops, the control device 40 controls the clamping member driving mechanism 13 to release the clamping member 5. As a result, it is possible to prevent the pure water from flowing down along the holding member 5 and to grow the pure water liquid mass 45 easily.
- a delay of a certain time for example, about 5 seconds. Therefore, when the spin chuck 1 is rotated at a
- the control device 40 executes a pure water removing step of inclining the substrate W to remove pure water from the upper surface of the substrate W.
- the control device 40 controls the swing drive mechanism 28 and the arm lifting drive mechanism 29 so that the substrate support member 27 enters the gap between the upper surface of the spin base 4 and the lower surface of the substrate W.
- the control device 40 holds the holding member 5 in the released state and releases the holding of the substrate W under the control of the holding member driving mechanism 13.
- the control device 40 controls the arm elevating drive mechanism 29 to raise the substrate support member 27 to a predetermined height.
- the substrate W has an inclined posture inclined by a predetermined angle ⁇ (for example, 1 to 5 degrees) with respect to the horizontal plane.
- the angle ⁇ is determined such that the pure water liquid mass 45 moves downward while maintaining the state of a single liquid mass that does not break, and is removed from the upper surface of the substrate W. More specifically, the height at which the substrate support member 27 is raised is determined so that such an angle is formed between the inclined substrate W and the horizontal plane.
- the trailing edge 45a of the pure water liquid mass 45 moving on the upper surface of the substrate W (pure water liquid mass 45 It is preferable that the angle ⁇ is determined so that the moving speed of the uppermost edge) is 3 to 20 millimeters per second, more preferably 3 to 5 millimeters per second.
- the lower edge of the substrate w in the inclined position is positioned opposite to the substrate support member 27 across the rotation center of the spin chuck 1 (that is, the position corresponding to the end surface of the lowest position of the substrate W in the inclined position). A certain clamping member 5 comes into contact. Therefore, the pure water liquid mass 45 that has flowed down the upper surface of the substrate W is guided so as to travel along the clamping member 5 and smoothly flows down from the upper surface of the substrate W.
- control device 40 keeps the nitrogen gas valve 19 in an open state during the pure water removal step.
- the space above the substrate W is limited by the blocking plate 10, and this limited space is filled with nitrogen gas.
- the tilting operation of the substrate W by the substrate tilting mechanism 25 is started.
- the area where the pure water is excluded on the upper surface of the substrate W (exposed area) and the boundary area (boundary area) between this exposed area and the area where the pure water liquid mass 45 is present are kept throughout the pure water exclusion process. Since it is placed in a nitrogen gas atmosphere, the formation of oxides in these regions can be suppressed or prevented.
- the control device 40 controls the flow rate adjusting unit 30 to set the supply flow rate of nitrogen gas to a predetermined small flow rate.
- the supply flow rate of the nitrogen gas is set to a value smaller than the flow rate at which the pure water liquid mass 45 on the substrate W is destroyed.
- the supply flow rate of nitrogen gas at this time is preferably 1 to 10 liters / minute, more preferably 5 liters / minute.
- the blocking plate 10 may be rotated or may be stopped.
- the control device 40 controls the arm raising / lowering drive mechanism 29 to lower the substrate support member 27. Thereby, the substrate W is returned to the horizontal posture supported by the sandwiching member 5. Further, the control device 40 controls the swing drive mechanism 28 to swing the swing arm 26 and retract the substrate support member 27 to the side of the spin chuck 1. Next, the control device 40 controls the sandwiching member drive mechanism 13 so that the substrate W is sandwiched by the sandwiching member 5. Then, as shown in FIG. 4 (e), the control device 40 controls the chuck rotation driving mechanism 2 to keep the spin chuck 1 at a predetermined drying rotation speed (for example, 3000 rpm) for a certain time (for example, 15 seconds to 30 seconds).
- a predetermined drying rotation speed for example, 3000 rpm
- the control device 40 controls the shield plate lifting / lowering drive mechanism 21 so that the substrate facing surface 11 of the shield plate 10 is placed on the upper surface of the substrate W, for example, to a distance of about 0.5 mm to 5. Omm.
- the shielding plate 10 is rotated in the same direction as the substrate W by the shielding plate rotation drive mechanism 22.
- the space above the substrate W is restricted, and the restricted space is filled with nitrogen gas.
- the nitrogen gas forms a directional force and a gas flow toward the outside of the substrate W. Therefore, it is possible to suppress or prevent the formation of an undesired oxide on the upper surface of the substrate W or the scattering of particles from the processing chamber on the surface of the substrate W.
- the control device 40 controls the flow rate adjusting unit 30 to set the supply flow rate of nitrogen gas to a predetermined large flow rate.
- the supply flow rate of nitrogen gas at this time is made larger than the supply flow rate in the pure water removal process.
- the supply flow rate of nitrogen gas at this time is preferably 5 to 20 liters / minute, more preferably 10 liters / minute.
- the control device 40 controls the chuck rotation driving mechanism 2 to stop the rotation of the spin chuck 1, and the blocking plate lifting / lowering driving mechanism
- the blocking plate 10 is retreated upward by controlling 21, the clamping member driving mechanism 13 is controlled to release the clamping of the substrate W by the clamping member 5, and the nitrogen gas valve 19 is closed.
- the processed substrate W is unloaded from the spin chuck 1 by the substrate transfer robot.
- the large pure water liquid mass 45 grown on the substrate W is divided by tilting the substrate W. And can be eliminated outside the substrate W. That is, the pure water liquid mass 45 is It falls without leaving microdroplets on the top surface of the substrate W. Therefore, since fine droplets do not remain on the upper surface (device forming surface) of the substrate W, the problem of streak-like particles can be overcome.
- FIG. 6 is an illustrative view for explaining a modification of the above-described embodiment.
- a moving nozzle 50 that can move the pure water supply position on the substrate W while supplying pure water as a rinsing liquid to the surface of the substrate W is provided. Pure water from a pure water supply source is supplied to the moving nozzle 50 via a pure water valve 51. The opening and closing of the pure water valve 51 is controlled by the control device 40 described above.
- a nozzle moving mechanism 52 is provided to move the moving nozzle 50 horizontally above the spin chuck 1, and the operation of the nozzle moving mechanism 52 is also controlled by the control device 40. Yes.
- the control device 40 opens the pure water valve 51 and moves the nozzle.
- the mechanism 52 is controlled to move the moving nozzle 50 above the substrate W in an inclined posture. More specifically, the pure water liquid landing point 55 from the moving nozzle 50 is located below the trailing edge 45a of the pure water liquid mass 45 moving on the substrate W. Therefore, the pure water liquid mass 45 The moving nozzle 50 is moved so that the state located inside is maintained.
- the pure water liquid mass 45 can be more reliably prevented from being divided by replenishing the pure water liquid mass 45 with the pure water liquid mass 45 from the moving nozzle 50, the substrate W The pure water on the upper surface can be removed more efficiently. Therefore, even if the angle ⁇ with respect to the horizontal surface when the substrate W is in the inclined posture is relatively large, the pure water liquid mass 45 can be prevented from breaking up, so that the removal of pure water from the upper surface of the substrate W can proceed more quickly. be able to. This can shorten the processing time.
- FIG. 7 is an illustrative view for explaining a configuration of a modified example of the substrate tilting mechanism for tilting the substrate W.
- the substrate tilting mechanism 60 includes a shield plate holding mechanism 23 including an arm 20, a shield plate lifting and lowering drive mechanism 21 and a shield plate rotation drive mechanism 22, and a movable frame 61 that holds the spin chuck 1 in common.
- the movable frame 61 rotates around a horizontal rotation axis 62 that passes through substantially the center of the substrate W held almost horizontally on the spin chuck 1.
- One rotation support shaft 63 is coupled to a rotation drive mechanism 65 capable of rotating the rotation support shaft 63 in both directions around the rotation axis 62.
- the rotation drive mechanism 65 is controlled by the control device 40 described above.
- the pure water removal step described above can be executed by tilting the spin chuck 1 and the blocking plate 10 integrally by an angle ⁇ under the control of the rotation drive mechanism 65. Then, since the substrate facing surface 11 of the shielding plate 10 is inclined following the inclination of the substrate W and both are held in a parallel state, the substrate facing surface 11 of the shielding plate 10 is placed on the substrate W in the pure water removal process. It can arrange
- FIG. 8 is an illustrative perspective view for explaining the configuration of the substrate processing apparatus according to the second embodiment of the present invention
- FIG. 9 is an illustrative side view showing an operating state. .
- the substrate processing apparatus includes a gas knife mechanism 70 that can move in the horizontal direction above the substrate W held by the spin chuck 1 (below the blocking plate 10).
- the gas knife mechanism 70 includes a gas nozzle 71 having a straight slot-like gas discharge port 71 a, a nitrogen gas supply pipe 72 that supplies nitrogen gas as an inert gas to the gas nozzle 71, and the nitrogen gas supply pipe 72.
- the gas nozzle 71 forms a gas knife 76 by nitrogen gas discharged from the gas discharge port 71 a, and the gas knife 76 forms a linear gas spray region 75 on the surface of the substrate W.
- This gas spray region 75 extends over a range longer than the diameter of the substrate W.
- the substrate processing apparatus includes a pair of moving nozzles 77 and 78 that can move a pure water supply position on the substrate W while supplying pure water as a rinsing liquid to the surface of the substrate W. .
- These moving nozzles 77 and 78 receive pure water from the pure water supply source. It is supplied via Lub 79. Opening and closing of the pure water valve 79 is controlled by the control device 40 described above.
- a nozzle moving mechanism 80 is provided for moving the moving nozzles 77 and 78 in the horizontal direction above the spin chuck 1. The operation of the nozzle moving mechanism 80 is also controlled by the control device 40.
- the pure water liquid mass 45 on the upper surface of the substrate W is eliminated by inclining the substrate W.
- the substrate W is inclined. Instead, the pure water liquid mass 45 is removed from the upper surface of the substrate W by the gas knife mechanism 70.
- the moving mechanism 74 is activated. Specifically, the control device 40 opens the nitrogen gas valve 73 to supply nitrogen gas to the gas nozzle 71 and operates the gas nozzle moving mechanism 74. As a result, the gas spray region 75 of the gas nozzle 71 scans the upper surface of the substrate W in one direction from the one peripheral end to the other peripheral end facing the same. As a result, the pure water liquid mass 45 is swept away from the substrate W by the gas knife 76 formed by the nitrogen gas discharged from the gas nozzle 71 and removed.
- control device 40 controls the nozzle moving mechanism 80 so that the liquid nozzles 77 and 78 are moved downstream of the gas spraying region 75 with respect to the moving direction R of the gas knife 76. Move in the same direction as direction R.
- the pure water liquid mass 45 is removed from the upper surface of the substrate W by the gas knife 76, the pure water liquid mass 45 is prevented from being broken by the supply of pure water downstream in the moving direction of the gas knife 76. it can. Accordingly, the pure water liquid mass 45 is excluded from the upper surface of the substrate W while maintaining a large liquid mass (preferably a single liquid mass), and therefore, a minute liquid is not formed in the device formation region on the upper surface of the substrate W. There is no risk of droplets remaining.
- the pair of moving nozzles 77 and 78 are arranged so as to supply pure water to the upper surface of the substrate W from a position facing each other with the substrate W interposed therebetween.
- These moving nozzles 77 and 78 may be straight nozzles, or may be shower nozzles that distribute pure water in the form of a shower and supply it to the upper surface of the substrate W. It is not necessary to provide a pair of moving nozzles, and pure water may be replenished to the liquid mass 45 on the upper surface of the substrate W with one moving nozzle.
- the control device 40 closes the pure water valve 79 at the timing immediately before the liquid landing points of the moving nozzles 77 and 78 reach the peripheral end of the substrate W.
- the control device 40 controls the gas nozzle moving mechanism 74 to retract the gas nozzle 71 to the side of the spin chuck 1, Close the nitrogen gas valve 73.
- the drying step shown in Fig. 4 (e) is performed.
- the control device 40 controls the chuck rotation driving mechanism 2 to rotate the spin chuck 1 at high speed, and shakes and dries out fine droplets remaining on the peripheral end surface of the substrate W. Further, the control device 40 controls the shield plate lifting / lowering drive mechanism 21 to bring the substrate facing surface 11 of the shield plate 10 close to the upper surface of the substrate W, and further controls the shield plate rotation drive mechanism 22 to control the shield plate 10.
- the pure water liquid mass 45 on the upper surface of the substrate W is removed from the upper surface of the substrate W while being kept in a large liquid mass state.
- the generation of streak particles can be suppressed or prevented.
- FIG. 10 is an illustrative sectional view for explaining the configuration of the substrate processing apparatus according to the third embodiment of the present invention.
- FIG. 11 is a schematic plan view thereof.
- This substrate processing apparatus includes a substrate holding mechanism 101 that holds one substrate W in a non-rotating state, and a substrate posture change that changes the posture of the substrate W held by the substrate holding mechanism 101 between a horizontal posture and an inclined posture.
- the mechanism 102, the chemical solution nozzle 111 for supplying a chemical solution to the upper surface of the substrate W held by the substrate holding mechanism 101, and pure water as a rinsing liquid are supplied to the upper surface of the substrate W held by the substrate holding mechanism 101.
- a pure water nozzle 112 for supplying and a substrate drying unit 103 for drying the substrate W on the substrate holding mechanism 101 are provided.
- FIG. 11 shows a plan view of the configuration excluding the substrate drying unit 103.
- the substrate holding mechanism 101 holds the substrate W in a non-rotating state with the device formation surface as an upper surface.
- the substrate holding mechanism 101 is provided with a base 104 and an upper surface force of the base 104: three support pins 131, 132, 133.
- the support pins 131, 132, and 133 are arranged at positions corresponding to the vertices of an equilateral triangle centered on the center of the substrate W (however, in FIG. 10, the support pins 131, 132, and 133 are actually provided for convenience. Arrangement and different It is shown in the figure. )
- These support pins 131, 132, 133 are arranged along the vertical direction and are attached to the base 104.
- the substrate attitude changing mechanism 102 includes a cylinder 105 that moves up and down one of the support pins 131, 132, and 133.
- the drive shaft 105a of the cylinder 105 is coupled to the support pin 133.
- the support pins 133 can be moved up and down, and the substrate support height can be made different from the substrate support heights of the other two support pins 131 and 132.
- the substrate W can be tilted from the horizontal posture shown by the solid line in FIG. 10 to the inclined posture shown by the two-dot chain line in FIG.
- the support pins 133 need not necessarily be fixed. It can be attached and played. In other words, if at least one of the support pins 131, 132, and 133 is attached to the base 104 so as to be movable up and down, the substrate W can be inclined. In addition, when at least two support pins can be moved up and down with respect to the base 104, the inclination direction of the substrate W can be arbitrarily selected.
- the chemical liquid nozzle 111 is a straight liquid nozzle that discharges the chemical liquid toward substantially the center of the substrate W.
- the chemical solution 111 is supplied with a chemical solution via a chemical valve 119.
- Pure water from the pure water supply source is supplied to the pure water nozzle 112 through a pure water valve 120.
- the pure water nozzle 112 is in the form of a straight water nozzle that supplies pure water toward almost the center of the substrate W.
- the substrate drying unit 103 is disposed above the substrate holding mechanism 101.
- the substrate drying unit 103 includes a disk-shaped plate heater (for example, a ceramic heater) 135 having substantially the same diameter as the substrate W.
- the plate heater 135 is supported in a substantially horizontal posture by a support cylinder 136 that is raised and lowered by an elevating mechanism 134.
- a thin disk-shaped filter plate 137 having the same diameter as the plate heater 135. It is provided substantially horizontally (that is, substantially parallel to the plate heater 135).
- the filter plate 137 is made of quartz glass, and the disk heater 135 can irradiate the upper surface of the substrate W with infrared rays through the filter plate 137 made of quartz glass.
- a first nitrogen gas supply passage 138 is formed.
- the nitrogen gas supplied from the first nitrogen gas supply passage 138 is supplied to the space between the upper surface of the substrate W and the lower surface of the filter plate 137 (substrate facing surface).
- the first nitrogen gas supply passage 138 is supplied with nitrogen gas via a nitrogen gas valve 139.
- the temperature is about room temperature (about 2 :!
- a second nitrogen gas supply passage 140 for supplying nitrogen gas whose temperature is adjusted to ⁇ 23 ° C. is formed.
- the nitrogen gas supplied from the second nitrogen gas supply passage 140 is supplied to the space between the upper surface of the filter plate 137 and the lower surface of the plate heater 135.
- Nitrogen gas is supplied to the second nitrogen gas supply passage 140 via a nitrogen gas valve 141.
- the plate heater 135 When drying the substrate W on the substrate holding mechanism 101, the plate heater 135 is energized, the nitrogen gas valves 139 and 141 are opened, and the substrate facing surface (lower surface) of the filter plate 137 is placed on the surface of the substrate W. Approach (for example, approach to a distance of about lmm). As a result, the moisture on the surface of the substrate W is evaporated by the infrared rays that have passed through the filter plate 137.
- the filter plate 137 made of quartz glass absorbs infrared rays in a part of the wavelength region of infrared rays.
- the infrared ray having a wavelength absorbed by the quartz glass is blocked by the filter plate 137 and is hardly irradiated to the substrate W.
- the substrate W is selectively irradiated with infrared rays in a wavelength region that passes through the filter plate 137, that is, quartz glass.
- the plate heater 135 made of an infrared ceramic heater irradiates infrared rays having a wavelength region of about 3 to 20 xm.
- quartz glass with a thickness of 5 mm absorbs infrared rays having a wavelength of 4 zm or more. Therefore, when these infrared ceramic heaters and quartz glass are used, the substrate W is selectively irradiated with infrared rays having a wavelength of about 3 ⁇ m to less than 4 ⁇ m.
- water has a property of particularly absorbing infrared rays having wavelengths of 3 ⁇ m and 6 ⁇ m. The infrared energy absorbed by the water causes the water molecules to vibrate, and frictional heat is generated between the vibrated water molecules.
- water can be efficiently heated and dried by irradiating water with infrared rays having a wavelength that is particularly absorbed by water. Therefore, when the substrate W is irradiated with infrared rays having a wavelength of about 3 ⁇ m, the fine water droplets adhering to the substrate W absorb the infrared rays and are dried by heating.
- the substrate W itself, if the silicon substrate, because it has a property of transmitting infrared rays of a wavelength shorter than longer absorb infrared radiation having a wavelength of 7 mu m than 7 beta m, the 3 mu m Even when irradiated with infrared rays of a wavelength, it is hardly heated.
- the substrate W itself is absorbed by the substrate W itself by selectively irradiating the substrate W with infrared rays in a wavelength region that is efficiently absorbed by water and transmitted through the substrate W itself.
- the minute droplets adhering to the substrate W that is hardly heated can be efficiently dried by heating.
- the filter plate 137 may be made of a material that transmits infrared light having a wavelength that is efficiently absorbed by water and that absorbs infrared light having a wavelength that is absorbed by the substrate W itself.
- the plate heater (ceramic heater) 135 When the plate heater (ceramic heater) 135 is energized, a force that can cause convective heat transfer from the plate heater 135 to the substrate W is blocked by the filter plate 137. However, since the temperature of the space between the lower surface of the plate heater 135 and the upper surface of the filter plate 137 rises due to the convection heat, the filter plate 137 is gradually heated, and the convection heat from the filter plate 1 37 is converted into the substrate. Heat may be transferred to W and the substrate W may be heated. Therefore, by supplying nitrogen gas as a cooling gas to the space between the lower surface of the plate heater 135 and the upper surface of the filter plate 137, the temperature rise of the space is suppressed.
- the filter plate 137 can suppress the temperature rise of the filter plate 137 by supplying nitrogen gas between the plate heater 135 and the filter plate 137 that absorbs infrared rays from the plate heater 135.
- the substrate W can be prevented from being heated by the convection heat.
- FIG. 12 is a block diagram for explaining a configuration for controlling the substrate processing apparatus.
- the substrate processing apparatus includes a control unit 110 including a computer.
- the control unit 110 operates the cylinder 105 and opens the chemical valve 119 and the pure water valve 120. It controls the operation of the closing / elevating mechanism 134, the energization of the plate heater 135, and the opening / closing of the nitrogen gas valves 139, 140.
- FIG. 13 is a flowchart for explaining an example of the operation of the substrate processing apparatus of this embodiment.
- the unprocessed substrate W is loaded into the substrate processing apparatus by a substrate transfer robot (not shown) and delivered to the support pins 131, 132, 132 of the substrate holding mechanism 101 (step S1).
- the support pins 131, 132, and 133 have the same substrate support height, and the substrate W is supported in a horizontal posture.
- the control unit 110 opens the chemical solution valve 119 and discharges the chemical solution from the chemical solution nozzle 111 toward the center of the substrate W (step S2).
- the chemical liquid flow rate at this time is a flow rate at which the chemical liquid supplied to the upper surface of the substrate W is held in a liquid accumulation state (paddle).
- the chemical solution can be deposited on the upper surface of the substrate W.
- a chemical solution having a relatively low clay for example, a mixed solution of ammonia and hydrogen peroxide
- the control unit 110 closes the chemical solution valve 119 and stops the supply of the chemical solution (step S3).
- the state in which the chemical solution is accumulated on the upper surface of the substrate W in a horizontal posture is held for a certain period of time. As long as the substrate W is held in a horizontal posture, the accumulated chemical solution is held on the upper surface of the substrate W by the surface tension.
- control unit 110 drives the cylinder 105 to raise the substrate support height of the support pins 133.
- the substrate W has an inclined posture that descends from the substrate support pins 133 toward the center of the substrate W.
- the chemical liquid accumulated on the upper surface of the substrate W flows down from the substrate W (step S4).
- the control unit 110 After holding the inclined posture of the substrate W for a certain period of time, the control unit 110 drives the cylinder 105 to return the substrate support height of the support pins 133 to the original height. As a result, the substrate W is in a horizontal posture (step S5). In this state, the control unit 110 opens the pure water valve 120 and discharges pure water toward the center of the substrate W by the pure water nozzle 112 force (step S6). At this time, the flow rate of the supplied pure water is a flow rate at which pure water can be accumulated on the surface of the substrate W in a horizontal posture.
- the control unit 110 closes the pure water valve 120 (step S7).
- substrate As long as the substrate W is held in a horizontal position, the pure water on the W is held in a liquid state on the substrate W by the surface tension.
- the control unit 110 drives the cylinder 105 to raise the substrate support height of the support pins 133.
- the substrate W is inclined.
- the pure water accumulated on the surface of the substrate W is drained by flowing down the substrate W force (step S8).
- the controller 110 holds the substrate W in the inclined posture for a certain time, and then drives the cylinder 105 to return the substrate support height of the support pins 133 to the original height. As a result, the substrate W is returned to the horizontal position (step S9).
- the control unit 110 uses the lifting mechanism 134 to reach a predetermined processing position where the substrate facing surface (lower surface) of the filter plate 137 approaches the upper surface of the substrate W up to a predetermined distance (for example, lmm).
- the plate heater 135 is lowered.
- the control unit 110 energizes the plate heater 135.
- water droplets remaining on the substrate W after the inclined drainage are evaporated by infrared rays that pass through the filter plate 137 and reach the surface of the substrate W.
- the control unit 110 also opens the nitrogen gas valves 139 and 141 to supply nitrogen gas to the first and second nitrogen gas supply passages 13 8 and 140.
- nitrogen gas (cooling gas) adjusted to room temperature is supplied to the space between the substrate W and the filter plate 137 and the space between the filter plate 137 and the plate heater 135.
- Substrate drying can be performed by supplying nitrogen gas from the gas supply passage 138 (step S10).
- the processed substrate W is unloaded from the apparatus by the substrate transfer robot (step S11).
- At least one of the three support pins 131, 132, 133 provided in the substrate holding mechanism 101 is moved up and down by the cylinder 105.
- the substrate W supported on the support pins 131, 132, 133 can be inclined, and the chemical solution or pure water on the substrate W can be excluded.
- the substrate W is not rotated by the substrate holding mechanism 101, but the substrate W is held in a horizontal posture or an inclined posture, and the processing liquid is supplied to the substrate W. That is, the substrate W is held in a non-rotating state, and the upper surface of the substrate W is covered with the liquid film of the processing liquid, and the surface treatment of the substrate W is performed with this processing liquid. Therefore, the processing liquid cannot jump out of the substrate W vigorously. Therefore, there is no need for a guard for catching the scattered processing liquid, the configuration can be simplified, and the cost of the substrate processing apparatus can be reduced.
- the diffusion of the spray of the processing liquid into the apparatus can be remarkably suppressed as compared with the conventional apparatus, the problem of atmospheric diffusion from the chemical solution deposit can be suppressed or prevented.
- the substrate W can be liquid-processed in a small space, and the substrate processing apparatus can be greatly downsized.
- the size of the substrate processing apparatus is set to be about the same as the conventional size, a large number of substrate processing units can be provided in the substrate processing apparatus. More specifically, a large number of substrate processing units of the same type or different types can be stacked one above the other.
- the chemical solution is deposited on the substrate W to perform the chemical treatment, the amount of the chemical solution used can be remarkably reduced. Thereby, running cost can be reduced. Furthermore, since the rinsing process after the chemical process is performed by the puddle process, the amount of pure water used can be reduced, and the running cost of the apparatus can be reduced accordingly.
- a watermark may be generated due to fine droplets scattered radially with the high-speed rotation.
- the infrared drying is performed with the substrate w in the non-rotating state, the generation of the watermark can be suppressed or prevented.
- the substrate W since it is not necessary to rotate the substrate W at a high speed, it is not necessary to provide a support member that firmly supports the substrate W. Further, it is possible to suppress or prevent defects such as chipping of the substrate W, in which there is no problem that a large load caused by such a support member is applied to the substrate W. Furthermore, in the configuration in which the substrate w is rotated at high speed, the problem of generation of static electricity due to friction between the chemical solution or air and the substrate surface is unavoidable. However, in this embodiment, the substrate w is basically non-rotated. Since the treatment is performed, the problem of frictional charging can be suppressed or prevented.
- a cylinder for raising and lowering one or both of the support pins 131 and 132 may be added.
- the tilt direction of the substrate W can be switched between two and three directions, so that the drain direction of the processing liquid can be varied for each type of processing liquid.
- the direction of draining the chemical liquid and the direction of draining pure water can be made different.
- the substrate W is held in a non-rotating state, the top surface of the substrate W is covered with a liquid film of the processing liquid, and the surface treatment of the substrate W is performed with this processing liquid. It is also possible to perform surface treatment of the substrate W with this processing liquid while holding the substrate W in a low rotation state (for example, about 10 to 200 rpm) and supplying the processing liquid to the upper surface of the substrate W. Alternatively, only when the substrate W is dried by the substrate drying unit 103, the substrate W may be in a low rotation state.
- Such a low rotation state of the substrate W can be realized, for example, by rotating a plurality of rollers that have a rotation axis substantially orthogonal to the surface of the substrate W and are in contact with the end surface of the substrate W.
- a rotational drive source such as a motor or cylinder can be made inexpensive and small, which is advantageous in terms of cost and space.
- the processing liquid when supplied, the scattering of the processing liquid can be minimized.
- the low rotation of the substrate W may be performed continuously or intermittently.
- the force S described in the three embodiments of the present invention can be implemented in still other forms.
- the substrate W A force that uses a spin chuck 1 made of a so-called mechanical chuck that sandwiches the peripheral end surface of the substrate.
- a vacuum chuck type spin chuck that holds and holds the lower surface of the substrate W may be used.
- the substrate drying unit 103 described in the third embodiment if the substrate drying unit 103 described in the third embodiment is used, the substrate W is not rotated since it is not necessary to rotate the substrate W at a high speed in the drying process. Or, it is possible to apply a substrate holding mechanism that holds in a low rotation state.
- nitrogen gas is used as the inert gas.
- argon gas can be used as the inert gas.
- air (clean air) cleaned with a filter or the like may be used instead of the inert gas.
- a gas drying process using these inert gases or clean air can also be performed. That is, instead of the substrate drying unit 103 described above, the substrate W is supplied by supplying an inert gas or clean air heated to room temperature (for example, 23 ° C) or 40 ° C to 150 ° C to the surface of the substrate W. You can make the surface dry.
- a substrate holding mechanism that holds the substrate W in a non-rotation state or a low rotation state is not necessarily required to rotate the substrate W at a high speed in the gas drying process.
- a gas such as inert gas or clean air
- organic solvent vapor such as IP A (isopropyl alcohol) vapor or HFE (no-Ido-fluor ether) vapor may be used in combination. .
- the pressure around the substrate W for example, the pressure in the processing chamber containing at least the mechanism (1, 101) for holding the substrate in the above-mentioned first to third embodiments is reduced.
- a drying step may be applied.
- force water in which pure water is used as the rinsing liquid functional water such as electrolytic ion water, hydrogen water, magnetic water, or dilute (for example, about 1 ppm) ammonia water is used. It can also be used as a rinse solution.
- the mechanism for inclining the substrate W the one that inclines only the substrate W (Fig. 1) and the one that inclines the spin chuck 1 (Fig. 7) are exemplified.
- the entire processing chamber containing the spin chuck 1 or the like may be tilted, or the entire substrate processing apparatus may be tilted to tilt the substrate W with respect to the horizontal plane.
- the first embodiment and the second embodiment are combined.
- the substrate W is tilted, and at the same time, the pure water liquid mass 45 is swept down to the lower side of the tilted substrate W by the gas knife 76 formed on the gas nozzle 71.
- it is preferable to prevent splitting of the pure water liquid mass 45 by supplying pure water from the moving nozzles 77 and 78 to the pure water liquid mass 45 on the downstream side in the moving direction of the gas knife 76. ,.
- the force S using the gas nozzle 71 that forms the linear gas spray region 75 on the surface of the substrate W is shown in Figs. 15 (a), 15 (b), 15
- a curved line (arc shape) may be applied, as shown in Fig. 15 (d).
- a gas nozzle that forms the gas spray regions 84 and 85 may be applied.
- each of the gas blowing regions 81 and 84 in Figs. 15 (a) and 15 (d) has a shape in which each central portion is recessed toward the upstream side with respect to the moving direction R of the gas knife. .
- the pure water liquid mass can be pushed toward the moving direction R side while collecting pure water on the upper surface of the substrate W inward, so that the split of the pure water liquid mass is difficult to occur.
- gas nozzle in addition to a linear gas spray region on the substrate W, for example, a gas nozzle that forms an elliptical gas spray region on the substrate W may be applied.
- the rinse liquid (pure water) is removed from the substrate surface in a single liquid mass state.
- the rinse liquid mass may be divided into a plurality of masses so that no droplets remain.
- the liquid is separated into two and three liquid masses, respectively, at the final stage of the rinse liquid exclusion process.
- the liquid film in the liquid film coating step, covers almost the entire upper surface of the substrate W. Only part of the upper surface of the substrate W is liquid. The film may be covered.
- a liquid absorbing member that absorbs droplets remaining on the end surface of the substrate after the substrate W is tilted to remove the rinse liquid on the surface of the substrate W may be provided.
- This liquid absorbing member is close to / separated from the substrate W, which may be composed of a porous member such as a PVA sponge or a suction nozzle to which a suction mechanism such as a comb is connected. It is preferably mounted on a movable arm that can be moved between.
- the liquid absorbing member provided on the moving arm approaches the substrate W, and the lowest of the end surfaces of the substrate W when the substrate W is inclined. It is possible to suck the droplets on the W end surface of the substrate by approaching or contacting the formed portion. Therefore, the substrate W can be more reliably dried in the subsequent drying process of the substrate W.
- the device forming surface is taken as an example of the hydrophobic substrate W.
- the present invention can also be applied to a hydrophilic substrate.
- a circular substrate w is a processing target has been described.
- a square substrate such as a glass substrate for a liquid crystal display device or a glass substrate for a plasma display. This invention can also be applied.
Landscapes
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2006/300560 WO2007083358A1 (ja) | 2006-01-17 | 2006-01-17 | 基板処理装置および基板処理方法 |
| KR1020087016449A KR101029691B1 (ko) | 2006-01-17 | 2006-01-17 | 기판처리장치 및 기판처리방법 |
| US12/161,263 US8277569B2 (en) | 2004-07-01 | 2006-01-17 | Substrate treating apparatus and substrate treating method |
| JP2007554759A JPWO2007083358A1 (ja) | 2006-01-17 | 2006-01-17 | 基板処理装置および基板処理方法 |
| CN200680051270A CN100592475C (zh) | 2006-01-17 | 2006-01-17 | 基板处理装置以及基板处理方法 |
| US13/590,694 US8524009B2 (en) | 2004-07-01 | 2012-08-21 | Substrate treating method |
| US13/828,015 US8646469B2 (en) | 2004-07-01 | 2013-03-14 | Substrate treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2006/300560 WO2007083358A1 (ja) | 2006-01-17 | 2006-01-17 | 基板処理装置および基板処理方法 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/161,263 A-371-Of-International US8277569B2 (en) | 2004-07-01 | 2006-01-17 | Substrate treating apparatus and substrate treating method |
| US13/590,694 Division US8524009B2 (en) | 2004-07-01 | 2012-08-21 | Substrate treating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007083358A1 true WO2007083358A1 (ja) | 2007-07-26 |
Family
ID=38287320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/300560 Ceased WO2007083358A1 (ja) | 2004-07-01 | 2006-01-17 | 基板処理装置および基板処理方法 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2007083358A1 (ja) |
| KR (1) | KR101029691B1 (ja) |
| CN (1) | CN100592475C (ja) |
| WO (1) | WO2007083358A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416391A (zh) * | 2011-11-17 | 2012-04-18 | 北京七星华创电子股份有限公司 | 晶片表面清洗装置及清洗方法 |
| JP2015026813A (ja) * | 2013-06-20 | 2015-02-05 | 東京エレクトロン株式会社 | 液処理方法、液処理装置及び記憶媒体 |
| JP2015162597A (ja) * | 2014-02-27 | 2015-09-07 | 株式会社Screenホールディングス | 基板処理装置および基板処理方法 |
| US10825713B2 (en) | 2014-02-27 | 2020-11-03 | SCREEN Holdings Co., Ltd. | Substrate processing apparatus and substrate processing method |
| JP2025515275A (ja) * | 2022-04-18 | 2025-05-14 | 成都博騰実達智能科技有限公司 | 一体化加工設備 |
| TWI913536B (zh) | 2022-03-22 | 2026-02-01 | 日商斯庫林集團股份有限公司 | 基板處理方法及基板處理裝置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062524B (zh) * | 2010-11-22 | 2012-11-21 | 烟台睿创微纳技术有限公司 | 一种用于mems器件圆片的自动干燥设备 |
| JP5982758B2 (ja) | 2011-02-23 | 2016-08-31 | 東京エレクトロン株式会社 | マイクロ波照射装置 |
| CN103065994B (zh) * | 2011-10-19 | 2015-01-21 | 中芯国际集成电路制造(上海)有限公司 | 清洗硅片的装置及使用该装置清洗硅片的方法 |
| US9090854B2 (en) * | 2011-10-25 | 2015-07-28 | Lam Research Ag | Method and apparatus for processing wafer-shaped articles |
| US20130276823A1 (en) * | 2012-04-24 | 2013-10-24 | Advanced Wet Technologies Gmbh | Hyperbaric CNX for Post-Wafer-Saw Integrated Clean, De-Glue, and Dry Apparatus & Process |
| KR101987959B1 (ko) * | 2017-07-25 | 2019-06-11 | 세메스 주식회사 | 기판 처리 장치 및 방법 |
| CN208297925U (zh) * | 2018-01-02 | 2018-12-28 | 长鑫存储技术有限公司 | 浸润式曝光后移除残留水滴的装置 |
| US11742232B2 (en) * | 2018-08-22 | 2023-08-29 | Tokyo Electron Limited | Substrate processing method and substrate processing apparatus |
| CN110707022B (zh) * | 2019-09-06 | 2022-07-29 | 长江存储科技有限责任公司 | 晶圆清洁装置 |
| CN116864425B (zh) * | 2023-09-05 | 2023-12-29 | 山东汉旗科技有限公司 | 一种晶圆清洗干燥装置 |
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- 2006-01-17 CN CN200680051270A patent/CN100592475C/zh not_active Expired - Fee Related
- 2006-01-17 JP JP2007554759A patent/JPWO2007083358A1/ja not_active Abandoned
- 2006-01-17 KR KR1020087016449A patent/KR101029691B1/ko not_active Expired - Fee Related
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| JP2015026813A (ja) * | 2013-06-20 | 2015-02-05 | 東京エレクトロン株式会社 | 液処理方法、液処理装置及び記憶媒体 |
| JP2015162597A (ja) * | 2014-02-27 | 2015-09-07 | 株式会社Screenホールディングス | 基板処理装置および基板処理方法 |
| US10825713B2 (en) | 2014-02-27 | 2020-11-03 | SCREEN Holdings Co., Ltd. | Substrate processing apparatus and substrate processing method |
| TWI913536B (zh) | 2022-03-22 | 2026-02-01 | 日商斯庫林集團股份有限公司 | 基板處理方法及基板處理裝置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101029691B1 (ko) | 2011-04-15 |
| KR20080073370A (ko) | 2008-08-08 |
| JPWO2007083358A1 (ja) | 2009-06-11 |
| CN101361169A (zh) | 2009-02-04 |
| CN100592475C (zh) | 2010-02-24 |
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