Source: https://patents.google.com/patent/KR101394111B1/en
Timestamp: 2020-01-20 08:52:44
Document Index: 577878718

Matched Legal Cases: ['arts 600', 'arts 600', 'art 520', 'art 420', 'art 500', 'art 510', 'art 500', 'art 510', 'art\n520', 'art 600', 'art\n601', 'art\n700']

KR101394111B1 - Substrate processing apparatus - Google Patents
KR101394111B1
KR101394111B1 KR1020080012250A KR20080012250A KR101394111B1 KR 101394111 B1 KR101394111 B1 KR 101394111B1 KR 1020080012250 A KR1020080012250 A KR 1020080012250A KR 20080012250 A KR20080012250 A KR 20080012250A KR 101394111 B1 KR101394111 B1 KR 101394111B1
KR1020080012250A
KR20090086786A (en
(주)소슬
2008-02-11 Application filed by (주)소슬 filed Critical (주)소슬
2008-02-11 Priority to KR1020080012250A priority Critical patent/KR101394111B1/en
2009-08-14 Publication of KR20090086786A publication Critical patent/KR20090086786A/en
2014-05-13 Publication of KR101394111B1 publication Critical patent/KR101394111B1/en
The present invention relates to a substrate transferring apparatus and a substrate processing apparatus having the same, and more particularly, to a substrate processing apparatus having a process chamber, a plurality of susceptor portions provided in the process chamber and on which a substrate is placed, A fin portion, and a substrate transfer portion for simultaneously moving a plurality of substrates in the process chamber. At this time, the lengths of the plurality of lift pin portions corresponding to the plurality of susceptors are different from each other. In addition, the substrate transferring unit may simultaneously mount a plurality of substrates on a plurality of susceptors, or may simultaneously detach a plurality of substrates placed on the plurality of susceptors.
Therefore, by using the above substrate processing apparatus, it is possible to shorten the time for loading and unloading the plurality of substrates into the process chamber. Further, since the lift pin portions of the susceptor portions are located at different lengths, a plurality of substrates can be independently aligned without interference with the lift pin portions of adjacent susceptors.
A substrate processing apparatus,
[0001] SUBSTRATE PROCESSING APPARATUS [0002]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate processing apparatus, and more particularly, to a batch processing type substrate processing apparatus capable of simultaneously processing a plurality of substrates.
A batch-type substrate processing apparatus is an apparatus for processing a plurality of substrates simultaneously by placing a plurality of susceptors on the inner side of the chamber and placing the substrates on a plurality of susceptors. At this time, conventionally, the process of disposing the substrates one by one on the upper side of the susceptor by using the transfer means is repeated a plurality of times, and the substrates can be positioned on the upper side of the plurality of susceptors. As a result, the time required to mount a plurality of substrates on the susceptor is prolonged, so that the entire process time is also prolonged, thereby causing a problem of lowering the productivity.
In order to solve the above problems, it is an object of the present invention to provide a substrate processing apparatus capable of shortening the time for loading and unloading a plurality of substrates into a process chamber.
A substrate processing apparatus according to the present invention includes a processing chamber, a plurality of susceptor portions provided in the processing chamber to which the substrate is seated, a plurality of lift fin portions having different lengths corresponding to the plurality of susceptor portions, There is provided a substrate processing apparatus including a substrate transfer section for moving a plurality of substrates together in a chamber.
The susceptor unit may include a susceptor for placing the substrate thereon, and a first driving unit for moving the susceptor up and down.
The first driving unit may include a first driving shaft connected to the susceptor and supporting the susceptor, and a first power unit moving up and down the first driving shaft.
The lift pin portion preferably includes at least three lift pins.
The plurality of lift pin portions are preferably placed on the susceptor.
And a lift pin support positioned below the susceptor.
The substrate transferring part may include a blade part capable of placing a plurality of substrates and a second driving part capable of moving up and down and rotating the blade part.
The blade portion preferably includes a plurality of blades on which a plurality of substrates are respectively mounted.
The second driving unit may include a second driving shaft for supporting the blade unit, and a second power unit for moving the second driving shaft up and down.
It is effective that the blade has a shape in which the tip portion is bent so as to support the substrate at two or more axes of the blade.
It is effective that the blade is formed into a shape bent at an acute angle at more than two axes of the blade.
A substrate processing method according to the present invention includes the steps of: placing a substrate on a plurality of blades of a substrate transferring section, respectively; moving the substrate on which each of the substrates is placed to face each of the plurality of blades of the transfer section directly above the plurality of susceptors A step of lowering the plurality of susceptors to a position of a lift pin support base disposed at a lower portion of the plurality of susceptors to lift pin portions of different lengths corresponding to the plurality of susceptors, A step of projecting the susceptor at different heights on the surface of the susceptor and a lift pin portion having the highest protruding height among the lift pin portions protruding at different heights corresponding to each of the plurality of susceptors, Aligning the center of the substrate placed on the immediately above blade with the center of the substrate, A step of mounting the substrate on the lift pin part so that the height of the lift pin part is lower than the height of the susceptor part of the plurality of susceptors, Aligning a center of a susceptor including a lift pin portion located at a higher position with a center of a substrate positioned on a blade positioned immediately above the susceptor; lowering the blade so as to be positioned lower than the lift fin portion, And placing the substrate on the lift pin portion.
And the blade of the substrate transfer section rotates the second drive shaft using the second power section of the transfer section so that the plurality of blades connected to the second drive shaft are moved and rotated.
As described above, according to the present invention, there is provided a substrate transfer device capable of moving a plurality of substrates simultaneously, thereby allowing a plurality of substrates to be simultaneously placed on a plurality of susceptors, or a plurality of substrates placed on the plurality of susceptors It can be desorbed at the same time. Thus, the time for loading and unloading the substrate into the process chamber can be shortened. Further, since the substrate can simultaneously move a plurality of blades of the transfer section without a plurality of transfer means, the substrate processing apparatus can be simplified.
In the present invention, the substrate can be placed on the upper surface of the susceptor. Therefore, when heat is to be transferred to the substrate using the heating means of the susceptor, the heat of the susceptor is uniformly transferred to the entire surface of the substrate. In addition, since the entire surface of the substrate comes into contact with the upper surface of the susceptor, deposition of the deposition material on the rear surface of the substrate can be prevented.
Further, according to the present invention, the lift pin portions of the susceptor portions can be controlled at different heights, so that the plurality of substrates can be independently aligned without interference with the lift pin portions of adjacent susceptors.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that the intention is not to limit the invention to the particular embodiments disclosed, but should be &lt; RTI ID = 0.0 & It is provided to let you know. Like numbers refer to like elements throughout the drawings.
1 is a view for explaining a substrate processing apparatus according to an embodiment of the present invention. 2 is a schematic sectional view showing a main part of a substrate processing apparatus according to an embodiment of the present invention.
1 and 2, a substrate processing apparatus according to the present invention includes a process chamber 100, a plurality of susceptor units 600 positioned within the process chamber 100 and on which a plurality of substrates 300 are placed, A plurality of lift pin portions 700 that are disposed in correspondence with the plurality of susceptor portions 600 to support the substrate 300 and a plurality of lift pin support portions 710 located below the susceptor portions 600, And a substrate transfer unit 500 which is located in the process chamber 100 and moves up and down and rotates to move and seat the plurality of substrates 300 on the suscepter unit 600 at the same time. 2, a gas supply unit 800 for supplying a process gas into the process chamber 100 is further provided.
The transfer chamber 200 is connected to the process chamber 100. The substrate transfer port 210 is located in a region between the transfer chamber 200 and the process chamber 100. The transfer chamber 200 is connected to the process chamber 100 through the transfer chamber 200, (400) for transporting the substrate (300) to the substrate (100).
Of course, the substrate processing apparatus may include exhaust means 900 for exhausting gas in the process chamber 100. Further, although not shown in the figure, the apparatus may further include a pressure regulating means for regulating the pressure inside the process chamber 100, and may further include a plasma generator for activating the process gas inside the process chamber 100 .
The process chamber 100 is preferably formed in a shape corresponding to the shape of the substrate 300. A predetermined space is provided in the process chamber 100 to process a plurality of substrates 300.
The transfer chamber 200 may be disposed in connection with the process chamber 100. The transfer chamber 200 may provide a space for the substrate 300 to temporarily wait before transferring the substrate 300 into the process chamber 100. In addition, it is possible to provide a space for temporarily waiting before the substrate 300 deposited in the process chamber 100 is exposed to the atmosphere. That is, the transfer chamber 200 can be used as a load lock chamber. The transfer chamber 200 may be provided with transfer means 400 for transferring the substrate 300 into the process chamber 100.
The transfer means 400 includes a support 410 extending in one direction and an arm 420 connected to the support 410. In this embodiment, the arm portion 420 includes a plurality of seating portions 401 and 402 that can seat one substrate 300, respectively. Accordingly, the plurality of substrates 300 can be simultaneously transferred into the process chamber 100 by using the transfer means 400. In this embodiment, the two seating portions 401 and 402 are provided as shown in FIG. 1, but the present invention is not limited to this, and more or fewer seating portions 401 and 402 may be provided.
As shown in FIG. 1, an entrance 210 is provided in the area between the transfer chamber 200 and the process chamber 100. In this embodiment, two outlets 211 and 212 are provided on one wall of the process chamber 100. Whereby the two substrates 300 can be simultaneously moved in and out. It is effective that the first and second substrate entrance ports 211 and 212 are located at the same height. Wherein the height refers to the height from the bottom of the process chamber 100. Of course, the height of the first and second substrate inlet / outlet holes 211 and 212 may be different from each other. Although not shown in the drawing, the present embodiment may further include a plurality of gate valve portions for opening and closing the first and second substrate entrance ports 211 and 212, respectively. Of course, it is also possible to open and close the first and second substrate inlet / outlet ports 211 and 212 using a single gate valve unit.
In the process chamber 100, a plurality of susceptor units 600 are installed to process a plurality of substrates 300 at the same time. In this embodiment, four susceptor parts 600a, 600b, 600c and 600d 600 for mounting four substrates 300 are included. Each of the suscepters 600 includes susceptors 601a, 601b, 601c, and 601d: 601 for placing the substrates 300 thereon and first drive units 610a, 610b, and 610b for moving up and down the susceptors 601, 610c, 610d: 610). In this embodiment, the substrate 300 may be seated on the upper surface of the susceptor 601. Therefore, the susceptor 601 may use an electrostatic force to seat the substrate 300 on the upper surface of the susceptor 601. [ Thus, the susceptor 601 may be an electrostatic chuck. The susceptor 601 may use a suction force to seat the substrate 300 on the upper surface of the susceptor 601. [ The susceptor 601 may include a heating means 605 for heating the susceptor 601 and a plurality of lift pin grooves (not shown) provided in the susceptor 601. The heating means 605 is provided inside the susceptor 601 to heat the susceptor 601 to heat the substrate 300 that is seated on the upper surface of the susceptor 601. A heating wire provided inside the susceptor 601 as the heating means 605 can be used. That is, the susceptor 601 can be heated by applying power to the hot wire to generate heat. The heating means 605 may use heating means using various thermal energy such as light energy as well as the heating means 605 using such electric energy. Although not shown, the susceptor 601 may further include a cooling means and a temperature sensing means.
Each of the first driving units 610 includes driving shafts 611a, 611b, 611c and 611d: 611 connected to the susceptor 601 and first power units 621a and 621b for moving up and down the first driving shaft 611 , 621c, 621d: 621). The susceptor 601 connected to the first driving shaft 611 can be moved up and down and rotated by moving the first driving shaft 611 up and down and rotating using the first power unit 621. [ At this time, the first power section 621 can use a motor.
The plurality of lift pin portions 700 correspond to the susceptors 601 of the plurality of susceptor portions 600, respectively. That is, since four susceptors 601 are provided in the present embodiment, it is preferable to provide four lift pin portions 701, 702, 703, and 704: 700 corresponding to the respective susceptors 601. Each of the plurality of lift pin portions 700 includes at least three lift pins. That is, the substrate 300 can be stably supported through the three lift pins. The substrate 300 can be placed on the susceptor 601 via the lift pin unit 700 or the substrate 300 placed on the susceptor 601 can be removed. That is, when the first driving shaft 611 connected to the first power section 621 is raised and lowered by using the first power section 621 of the first driving section 610, the susceptor connected to the first driving shaft 611 601 are moved up and down. Therefore, the substrate 300 located on the upper portion of the lift pin 700 can be seated on the upper surface of the susceptor 601. In addition, the susceptor 601 may be lowered to place the substrate 300, which is seated on the upper surface of the susceptor 601, on the upper portion of the lift pin 700.
In this embodiment, the lift pin portion 700 is fixed to the susceptor 601. Further, the lengths of the lift pin portions 700 corresponding to the susceptors 601 are different from each other. For example, the lengths of adjacent two lift pin portions 700 may be different from each other, or the lengths of the lift pin portions 700 adjacent to each other in the clockwise direction may be different from each other. 2, the length h1 of the first lift pin portion 701 passing through the first susceptor 601a is greater than the length h2 of the second lift pin portion 702 passing through the second susceptor 601b ). Thus, the plurality of substrates 300 can be aligned independently of the lift pin portions 700 of adjacent susceptors 601 without interference.
The lift pin support 710 is positioned below the plurality of susceptors 601. Accordingly, when the plurality of susceptors 601 are lowered, the lift pins 700 of the susceptors 601 are lowered together, and the lift pins 700 are supported by the lift pins 710 . The shape of the lift pin support 710 may be plate-shaped. The lift pin support 710 includes a plurality of grooves (not shown). The first driving shaft 611 of the susceptor 600 can penetrate through the groove. Accordingly, the lift pin support base 710 has a number of through holes (not shown) corresponding to the plurality of susceptor parts 600. The first drive shafts 611a, 611b, 611c, and 611d corresponding to the four suscepters 600a, 600b, 600c, and 600d include the four suscepters 600a, 600b, 600c, It is preferable to provide four through-holes (not shown) so that the through-holes can pass therethrough. In addition, the substrate includes a through groove through which the second driving shaft 501 of the transmitting unit 500 can pass. In addition, since one substrate includes the transmitting unit 500, it is preferable that one substrate further includes one through-hole (not shown) so that the second driving shaft 501 of the transmitting unit 500 can penetrate.
The substrate transfer section 500 is located at the center between the susceptor sections 600. The substrate transfer unit 500 includes a blade unit 510 capable of placing a plurality of substrates 300 and a second drive unit 520 capable of moving up and down and rotating the blade unit 510. The blade portion 510 includes a plurality of blades 511, 512 on which a plurality of substrates 300 are seated. Each of the blades 511 and 512 of the present embodiment is formed to have a shape extending from the end of the second driving part 520 to be coupled. That is, as shown in FIG. 1, the ends of the blades 511 and 512 have bent regions, and the substrate is seated on the bent regions. It is preferable that the bent region is bent at an acute angle at the tip of the straight line.
The second driving unit 520 includes a second driving shaft 501 connected to the blade unit 510 and a second power unit 502 for moving up and down the second driving shaft 501. Here, the second power unit 502 can use a motor. The ascending and descending and rotating forces of the second power unit 502 are transmitted to the plurality of blades 511 and 512 of the blade unit 510 through the second driving shaft 501. As a result, each of the blades 511 and 512, on which the substrate 300 is mounted, can rotate and move up and down in the inner space of the chamber 100. Accordingly, the substrate 300 can be freely placed on the plurality of susceptors 601 fixed to the inside of the process chamber 100, or the substrate 300 can be moved after the mounted substrate 300 is detached. That is, the blade unit 510 on which the substrate 300 of the transfer unit 500 is mounted is lowered to transfer the plurality of substrates 300 to the upper portion of the lift pin unit 700 protruded to the surface of each susceptor 601 As shown in Fig. It is also possible to mount the substrate 300 mounted on the lift pin portion 700 of each susceptor 601 on the respective blades 511 and 512 by raising and lowering the blade portion 510 of the substrate transfer portion 500 have. The substrate 300 can be simultaneously or sequentially placed on the plurality of susceptors 601 by using the substrate transfer unit 500 or the plurality of substrates 300 mounted on the plurality of susceptors 601 300 can be desorbed simultaneously or continuously. In this embodiment, two blades 511 and 512 are provided so that two substrates 301 and 302 can be seated, respectively. However, the number of blades 511, 5112 may be larger than the number of blades 511, 5112.
In this embodiment, each of the blades 511 and 512 of the substrate transfer unit 500 is connected to the second drive shaft 501. Accordingly, when the substrate moves up and down and rotates the second drive shaft 501 by using the second power section 502 of the transfer section 500, the blades 511 and 512 connected to the second drive shaft 501 are simultaneously wound Down and rotated. In this embodiment, the lift pins 701, 702, 703, and 704 of the susceptors 601a, 601b, 601c, and 601d are controlled to have different lengths, so that the lift of the adjacent susceptors 601a, 601b, 601c, 703, and 704 of the susceptors 601a, 601b, 601c, and 601d without interfering with the fin portions 701, 702, 703, and 704 . A detailed description thereof will be described later.
The center of the substrate 300 and the center of the susceptor 601 coincide with each other when the substrate 300 is placed on the upper surface of the susceptor 601, May be positioned with an alignment error because they do not coincide with each other. At this time, the alignment error may be generated when the substrate 300 is initially placed on the seating portion 420 of the conveying means 500. Therefore, if an alignment error occurs when the substrate 300 is placed on the seating portion 420 of the transfer means 500, the substrate 300 is seated on the upper surface of the susceptor 601 by the alignment error W The alignment error occurs. Therefore, when the substrate 300 is placed on the seating part 420 of the conveying means 500, the alignment error and the alignment error value W are measured. The alignment error value (W) can be detected using AWC (Auto with control). The substrate moves the blade unit 510 of the transfer unit 500 by an alignment error value W generated before the substrate 300 is mounted on the upper surface of the susceptor 601, The alignment error value W can be compensated. That is, the alignment error and the alignment error value W are measured after the substrate 300 is placed on the seat 420 of the transfer means 400, and if the alignment error occurs, the alignment error value W generated is referred to So that the substrate moves the blade portion 510 of the transmitting portion 500. Thus, the center of the substrate 300 can be aligned with the center of the susceptor 601.
The present invention is not limited thereto and if the alignment error does not occur when the substrate 300 is mounted on the seating portion 420 of the first conveying means 400, the substrate moves the blade portion 510 of the transmitting portion 500 finely The step of aligning the substrate 300 may be omitted.
A process of placing a plurality of substrates 300 on the upper surface of a plurality of susceptors 601 in the process chamber 100 will be described in detail below.
FIGS. 3 to 14 are views for explaining the process of placing a plurality of substrates 300 on the upper surface of a plurality of susceptors 601 according to an embodiment of the present invention.
3, the substrate processing apparatus according to the present embodiment includes a process chamber 100, four susceptors (not shown) that are located in the process chamber 100 and on which four substrates 301, 302, 303, Four lift pin portions 701, 702, 703, and 704 (corresponding to the four susceptor portions 600a, 600b, 600c, and 600d) And a lift pin support base 710 disposed under the susceptors 601a, 601b, 601c and 601d of the four susceptor units 600a, 600b, 600c and 600d, And a substrate transfer unit 500 which moves up and down and rotates to move and seat the two substrates 300 together on the susceptor units 600a, 600b, 600c and 600d. At this time, the blade portion 510 of the substrate transfer unit 500 includes two blades 511 and 512 capable of holding two substrates 300, respectively. It also includes a transfer means 400 including two seats 401 and 402 for transferring two substrates 300 together from the transfer chamber 110 into the process chamber 100. Two substrate outlets 211 and 212 are provided so that the respective seating portions 401 and 402 of the transfer means 400 can move into the process chamber 100. In addition, the present invention is not limited thereto, and one substrate entry / exit port 210 larger than the sum of the two substrates 200 may be provided.
3, two substrates 301 and 302 are provided on the first and second seating portions 401 and 402 of the conveying means 400 located in the transfer chamber 200, respectively, Rest. The two substrate outlets 211 and 212 positioned between the transfer chamber 200 and the process chamber 100 are opened to transfer the transfer unit 400 on which the substrate 300 is placed into the process chamber 100 . The first seating portion 401 of the transfer means 400 is transferred to the first chamber entrance 211 and the second chamber portion 402 is transferred into the process chamber 100 through the second substrate entrance 212. It is also preferable that the respective seating portions 401 and 402 of the transfer means 400 are moved to the front region of the substrate entry / exit ports 211 and 212 in the process chamber 100. At this time, the substrate transfer unit 500 located in the process chamber 100 is lower than the transfer unit 400 transferred into the process chamber 100, and is positioned higher than the susceptors 601a, 601b, 601c, and 601d . Subsequently, the substrate rotates the second driving shaft 501 connected to the second power section 502 by using the second power section 502 of the transmitting section 500. Thus, the blade portion 510 connected to the second driving shaft 501 can be rotated. At this time, the first blade 511 of the substrate transfer unit 500 is directly below the first seating unit 401 of the transfer means 400, the second blade 511 is transferred to the second seat 511 of the transfer means 400, (402). The second drive shaft 501 connected to the second power unit 502 can be raised and lowered by using the second power unit 502 of the substrate transfer unit 500. As a result, the blade portion 510 connected to the second drive shaft 501 is moved up and down. At this time, the substrate is raised and lowered so that the blades 511 and 512 of the transfer unit 500 are located higher than the respective seating units 401 and 402 of the transfer means 400. The shape of the seating portion 420 of the conveying means 400 may be such that the central region of the seating portion 420 is opened so as to support the substrate 300 only in the edge region of the substrate 300 . For example, the shape of the seating portions 411 and 412 of the conveying means 400 may be a C shape. The shape of each of the blades 511 and 512 of the substrate transfer portion 500 may be a shape of the blade 511 and 512, When the substrate lifts and moves the blade 510 of the transfer unit 500, the mounting unit 420 may be mounted on the mounting unit 420. In this case, The collision between the blades 511 and 512 of the substrate transferring part 500 and the mounting part 510 of the transferring part 500 occurs The two substrates 301 and 302 can be mounted on the respective blades 511 and 512 of the transfer unit 500 as shown in FIG.
4, the substrate on which the two substrates 301 and 302 are mounted is connected to the second driving portion 502 connected to the second power portion 502 by using the second power portion 502 of the transmitting portion 500, (501). Thus, the blade portion 510 connected to the second driving shaft 501 can be moved. 5A, each of the blades 511 and 512 of the substrate transfer unit 500 is moved to a position where two (2) out of the susceptors 601a, 601b, 601c, and 601d on which the substrate 300 is not placed, 601b, 601c, and 601d of the susceptors 601a, 601b, 601c, and 601d, respectively. In this embodiment, the first blade 511 of the substrate transfer unit 500 is arranged just above the first susceptor 601a, and the second blade 512 is disposed just above the second susceptor 601b .
At this time, the center of the substrate 300, on which the substrate is mounted on the blades 511 and 512 of the transfer unit 500, is aligned with the center of each susceptor 600 disposed immediately below the blades 511 and 512 Or the center of each substrate 300 and the center of each susceptor 600 do not coincide with each other and can be positioned with an alignment error. In this case, the misalignment may occur due to various causes, and when the misalignment occurs, the substrate can be aligned by moving the blade unit 510 of the transfer unit 500 finely.
In the following, a method of aligning the substrate 300 using the substrate transfer unit 500 will be described.
5 (b) is a cross-sectional view of the first and second blades 511 and 512 of the substrate transfer section 500 just above the first susceptor 601a and the second susceptor 601b in FIG. 5 (a) ). At this time, each of the first blade 511 and the second blade 512 has the substrate 300 thereon. 5B, the first substrate 301 has an alignment error of W1 from the center of the first susceptor 601a, and the second substrate 302 has a second susceptor 601b ), An alignment error occurred by W2. The generated alignment error values W1 and W2 may be the alignment error values W1 and W2 generated when the substrates 300 are mounted on the respective seating portions 401 and 402 of the transfer means 400. [ Therefore, before placing the substrate 300 on the upper surface of the susceptor 601, a step of aligning the substrate 300 is performed.
In this embodiment, as shown in Fig. 5A, the lengths of the lift pin portions 701 and 702 of the susceptors 601a and 601b are different from each other. That is, the length h2 of the second lift pin portion 702 of the second susceptor 601b is shorter than the length h1 of the first lift fin portion 701 of the first susceptor 601a.
First, the first driving shaft 611a connected to the first power section 621a is lowered by using the first power section 621a connected to each of the susceptors 601a and 601b. Therefore, the susceptors 601a and 601b connected to the first driving shaft 611a can be lowered. At this time, when the susceptors 601a and 601b are lowered, the lift pins 701 and 702, which are placed on the susceptors 601a and 601b, descend together. Therefore, when the susceptors 601a and 601b are lowered, the lift pins 701 and 702 of the susceptors 601a and 601b reach the lift pin support 710 before the susceptors 601a and 601b, Subsequently, when the susceptors 601a and 601b are continuously lowered, the lift pins 701 and 702 of the susceptors 601a and 601b are supported by the lift pin support 710 and the susceptors 601a and 601b The lift pins 701 and 702 protrude from the upper surfaces of the susceptors 601a and 601b because the lengths of the lift pins 701 and 702 of the susceptors 601a and 601b are different from each other The height of the lift pins 701 and 702 protruding from the susceptors 601a and 601b are different from each other as shown in Figure 6. That is, The protrusion height h1 of the pin portion 701 is higher than the protrusion height h2 of the second lift pin portion 702 penetrating the second susceptor 601b. First, the first substrate 301 to be mounted on the upper surface of the first susceptor 601a is aligned.
7, the substrate rotates the second driving shaft 501 connected to the second power unit 502 by using the second power unit 502 of the transmitting unit 500. As shown in FIG. Thus, the blade portion 510 connected to the second driving shaft 501 can be moved. At this time, the blade unit 510 is moved finely by W1 with reference to the alignment error value W1 generated when the first substrate 301 is placed on the first seating unit 401 of the conveying unit 400. [ Accordingly, as shown in FIG. 7, the center of the first susceptor 601a and the center of the first substrate 301 can be aligned with each other. At this time, the blades 511 and 512 are connected to the second drive shaft 501 in this embodiment. That is, each of the blades 511 and 512 is connected to the same axis. When the substrate rotates the second drive shaft 501 using the second power section 502 of the transfer section 500, the blades 511 and 512 connected to the second drive shaft 501 simultaneously move. Therefore, since the blades 511 and 512 are simultaneously moved by the alignment error value W1, the alignment error value between the second substrate 302 and the second susceptor 601b is a sum of W1 and W2. In the following, a value obtained by adding W1 and W2 is defined as W3.
8, the second driving shaft 501 connected to the second power section 502 is lowered by using the second power section 502 of the substrate transfer section 500, as shown in FIG. Accordingly, the blade portion 510 connected to the second driving shaft 501 can be lowered. At this time, the blade portion 510 is lowered to be lower than the height h1 of the first lift pin portion 701 passing through the first susceptor 601a. Thus, the first substrate 301 is seated on the first lift pin portion 701 of the first susceptor 601a.
Then, the second substrate 302 to be mounted on the upper surface of the second susceptor 601b is aligned. 8, the substrate rotates the second driving shaft 501 connected to the second power unit 502 by using the second power unit 502 of the transmitting unit 500. As shown in FIG. Thus, the blade portion 510 connected to the second driving shaft 501 can be moved. At this time, the blade portion 510 is moved finely by W3. W3 denotes an alignment error value W2 generated when the second substrate 302 is placed on the second seating portion 402 of the transfer means 400 and the alignment error W2 generated when the first substrate 301 is aligned with the first susceptor 601a (W1) in which the blade portion (510) is moved. Thus, as shown in FIG. 9, the center of the second susceptor 601b and the center of the second substrate 302 can be aligned with each other. Since the first substrate 301 is seated on the first lift pin portion 701 of the first susceptor 601a, the first substrate 301 may be fixed on the first substrate 301 when the blade portion 510 of the transfer means 400 is moved. The position does not change.
10, the second driving shaft 501 connected to the second power unit 502 is lowered by using the second power unit 502 of the substrate transfer unit 500 as shown in FIG. Accordingly, the blade portion 510 connected to the second driving shaft 501 can be lowered. At this time, it is preferable that the blade portion 510 is lowered to be positioned lower than the height h2 of the second lift pin portion 702 passing through the second susceptor 601b. Thus, the second substrate 302 can be seated on the second lift pin portion 702 of the second susceptor 601b.
Then, the second drive shaft 501 connected to the second power unit 502 is lowered by using the second power unit 502 of the substrate transfer unit 500. Accordingly, the blade portion 510 connected to the second driving shaft 501 can be lowered. Subsequently, the substrate rotates the second driving shaft 501 connected to the second power unit 502 by using the second power unit 502 of the transmitting unit 500. Thus, the blade portion 510 connected to the second driving shaft 501 can be moved. At this time, it is preferable that the substrate transfer the respective blades 511, 512 of the transfer section 500 so as not to interfere with the plurality of susceptors 601a, 601b, 601c, 601d. The second drive shaft 501 connected to the second power source 502 is lifted and lowered by using the second power source unit 502 of the substrate transfer unit 500 in this state. Therefore, the blade portion 510 connected to the second driving shaft 501 can be moved up and down. At this time, it is more preferable that the lift pins 701 and 702 passing through the susceptors 601a and 601b are raised and lowered to be higher than the height at which the substrates 301 and 302 are seated.
11, two substrates 303 and 304 are placed on the first and second seating portions 401 and 402 of the conveying means 500, respectively. Next, two substrate outlets 211 and 212 located between the transfer chamber 200 and the process chamber 100 are opened to transfer the transfer unit 400 on which the substrate 300 is loaded into the process chamber 100 . This allows two substrates 303 and 304 to be brought into the process chamber 100 at the same time. The two substrates 303 and 304 mounted on the respective seating portions 420 of the transfer means 400 are inserted into the process chamber 100 through the first and second blades 511 and 512 of the substrate transfer unit 500, . The substrate on which the substrates 303 and 304 are mounted rotates the second drive shaft 501 of the transfer unit 500 to move the blade unit 510 connected to the second drive shaft 501. 12, each of the blades 511 and 512 of the blade unit 510 is disposed on the upper side of the third susceptor 601c and the fourth susceptor 601d on which the substrate 300 is not seated, As shown in FIG.
Subsequently, the process of FIG. 5 (b) to FIG. 10 is repeated once. The substrates 303 and 304 can be respectively mounted on the respective lift pin portions 703 and 704 corresponding to the third and the third susceptors 601c and 601d.
Next, as shown in FIG. 13, the susceptors 601a, 601b, 601c and 601d are moved to the height of the lift pin portions 701, 702, 703 and 704 of the susceptors 601a, 601b, 601c and 601d Lift. At this time, the first power units 621a, 621b, 621c and 621d of the first driving units 610a, 610b, 610d and 610d connected to the lower parts of the susceptors 601a, 601b, 601c and 601d, The first driving shafts 611a, 611b, 611c and 611d connected to the power units 621a, 621b, 621c and 621d are raised and lowered. Therefore, the susceptors 601a, 601b, 601c, and 601d connected to the first driving shafts 611a, 611b, 611c, and 611d can be individually raised and lowered. As a result, the substrates 301, 302, 303, and 304 mounted on the lift pin portions 701, 702, 703, and 704 of the susceptors 601a, 601b, 601c, and 601d are in contact with the susceptors 601a and 601b , 601c, and 601d. At this time, the lift pins 701, 702, 703, and 704, which are not shown, are further raised and lowered to the susceptors 601a, 601b, 601c, and 601d, The lift pin support portion 710 may be spaced apart from the lift pin support portion 710.
As a result, four substrates 301, 302, 303, and 304 can be placed on the upper surface of the four susceptors 601a, 601b, 601c, and 601d in the process chamber 100, as shown in FIG.
Also, although not shown, it is preferable to elevate the susceptors 601a, 601b, 601c, and 601d to the same height before starting the deposition process.
In this embodiment, four first driving units 610 are provided to correspond to the four susceptors 601a, 601b, 601c, and 601d. However, the present invention is not limited thereto, and the first driving unit 610 may be provided with an integrated type which can simultaneously raise, lower, and rotate the four susceptors 601a, 601b, 601c, and 601d. Thus, the four susceptors 601a, 601b, 601c, and 601d are moved up and down simultaneously, and each of the susceptors 601a, 601b, 601c, and 601d is mounted on the lift pin portions 701, 702, 703, It is possible to turn over the susceptors 301, 301, 303 and 304 to the upper surfaces of the susceptors 601a, 601b, 601c and 601d.
If the alignment error does not occur when the substrates 300 are mounted on the mounting portion 410 of the first transfer means 400, the substrate moves the transfer portion 500, Can be omitted. That is, the substrate 300 placed on the blades 511 and 512 of the substrate 500 is placed on the lift pin 700 of each susceptor 601, and then the susceptor 600 is immediately lifted So that the substrate 300 can be placed on the susceptor 601.
1 is a view for explaining a substrate processing apparatus according to an embodiment of the present invention;
2 is a schematic sectional view showing a main part of a substrate processing apparatus according to the present invention;
FIGS. 3 to 14 are diagrams illustrating a process of placing a plurality of substrates on an upper surface of a susceptor according to an embodiment of the present invention. FIG.
100: chamber 200: transfer chamber
300: substrate 400: conveying means
500: substrate transferring part 510: blade part
520: second driving part 600: susceptor part
601: susceptor 610: second driving part
700: Lift pin portion
Elevating from, a plurality of susceptors unit provided within the process chamber that has a plurality of the susceptor in which the substrate is mounted;
A plurality of lift pin portions each having a different length corresponding to each of the plurality of susceptor portions and positioned on the susceptor;
The stand is placed on the susceptor bottom, by the support to the falling of the plurality of lift pin portion, the lift of each other projecting to different heights for different lengths of lift pins a surface portion of said plurality of susceptors of corresponding to a plurality of susceptors, each Pin support;
And a substrate transfer unit for moving the plurality of substrates together in the process chamber.
Wherein the susceptor portion includes a first driving portion capable of moving up and down and rotating the susceptor.
Wherein the first driving part includes a first driving shaft connected to the susceptor and supporting the susceptor, and a first power part moving up and down the first driving shaft.
Wherein the lift pin portion includes at least three lift pins.
Wherein the substrate transferring portion includes a blade portion capable of placing a plurality of substrates and a second driving portion capable of moving up and down and rotating the blade portion.
Wherein the blade portion includes a plurality of blades on which a plurality of substrates are respectively mounted.
Wherein the second drive unit includes a second drive shaft for supporting the blade unit and a second power unit for moving up and down the second drive shaft.
Wherein the blade is formed such that a tip portion thereof is bent so as to support the substrate at two or more axes of the blade.
Wherein the blade is formed in a shape bent at an acute angle at more than two axes of the blade.
Placing a substrate on a plurality of blades of the substrate transfer section, respectively;
Moving each of the plurality of blades of the transfer section such that the substrate on which each of the substrates is mounted is located directly above the plurality of susceptors;
The plurality of susceptors is lowered to a position of a lift pin support base disposed at a lower portion of the plurality of susceptors so that lift pin portions having different lengths corresponding to the plurality of susceptors are mounted on the surface of the plurality of susceptors Projecting at different heights;
A center of the susceptor including a lift pin portion having the highest protrusion height among the lift pin portions protruding at different heights corresponding to the plurality of susceptors, and a center of the substrate positioned on the blade positioned just above the susceptor Matching step;
Lowering the blade to a position lower than the lift pin portion to seat the substrate on the lift pin portion;
A center of a susceptor including a lift pin portion having a height of a protrusion among the lift pin portions protruding at different heights corresponding to each of a plurality of susceptor portions to which the substrate is not seated among the plurality of susceptors, Aligning the center of the substrate positioned on the blade immediately above the susceptor;
And lowering the blade to a position lower than the lift pin portion to seat the substrate on the lift pin portion.
Wherein the blade of the substrate transfer section moves and rotates a plurality of blades connected to the second drive shaft by moving and rotating the second drive shaft using the second power section of the substrate.
KR1020080012250A 2008-02-11 2008-02-11 Substrate processing apparatus KR101394111B1 (en)
KR1020080012250A KR101394111B1 (en) 2008-02-11 2008-02-11 Substrate processing apparatus
KR20090086786A KR20090086786A (en) 2009-08-14
KR101394111B1 true KR101394111B1 (en) 2014-05-13
ID=41206014
KR (1) KR101394111B1 (en)
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2008-02-11 KR KR1020080012250A patent/KR101394111B1/en not_active IP Right Cessation
KR102020188B1 (en) * 2017-09-28 2019-09-10 주식회사 테스 Substrate loading and unloading method of substrate process apparatus
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