Abstract:
Disclosed are a holding tray, a substrate alignment system using the same and a method thereof. More specifically, the present invention relates to a holding tray for substrate capable of accomplishing high-precision alignment and conducting a stable deposition. A holding means is included in at least one side of the substrate to hold and support the substrate in a manner that the substrate is vertically held and supported on a flat surface of the holding tray during a vacuum process. The holding tray according to the present invention, the substrate alignment system using the same, and the method thereof include a substrate on which a deposition is made, a frame formed to receive the substrate, a tray formed to receive the frame, and at least one holding means formed to hold the substrate on the frame. The holding tray for substrate according to the present invention, the substrate alignment system using the same, and the method thereof are useful to accomplish high-precision alignment and conduct a stable deposition process due to the stable vertical arrangement of the substrate during the deposition process.

Description:
CLAIM OF PRIORITY  
       [0001]     This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C.§119 from an application for HOLDING TRAY FOR SUBSTRATE, SUBSTRATE ALIGNMENT SYSTEM USING THE SAME AND METHOD THEREOF, earlier filed in the Korean Intellectual Property Office on the 5 th  of Jan. 2005 and there duly assigned Serial No. 10-2005-0000956.  
       BACKGROUND OF THE INVENTION  
       [0002]     1. Field of the Invention  
         [0003]     The present invention relates to a holding tray for substrate, a substrate alignment system using the same and a method thereof, and more specifically to a holding tray for substrate capable of accomplishing high-precision alignment and conducting a stable deposition process. A holding means is included in at least one side of the substrate to hold and support the substrate that is to be vertically arranged. Therefore, the substrate can be vertically held and supported on a flat surface of the holding tray for a vacuum deposition process.  
         [0004]     2. Related Art  
         [0005]     Generally, a deposition process of a thin film is divided into two groups: deposition under vacuum and deposition under atmospheric pressure.  
         [0006]     In the aforementioned deposition process, the method of depositing the thin film under vacuum has been used in the fields of semiconductors and display devices, because it may be used to form a high-purity thin film without contamination by foreign substances, and to deposit a thin film with relatively compact density.  
         [0007]     When a deposition of a thin film is carried out under vacuum condition, the thin film was deposited using a batch process due to limitation of the volume of the process chamber and the size of the substrate which may be placed in the process chamber, etc.  
         [0008]     Such a means for holding and supporting the substrate and the method thereof will be described in detail with reference to the accompanying drawings.  
       SUMMARY OF THE INVENTION  
       [0009]     Therefore, it is an object of the present invention to provide a holding tray for substrate capable of accomplishing high-precision alignment and conducting a stable deposition process, and a substrate alignment system using the same and a method thereof.  
         [0010]     In order to accomplish the above object, the holding tray for substrate according to the present invention includes a substrate on which a deposition is made, a frame formed to receive the substrate, a tray formed to receive the frame; and at least one holding means for substrate formed to hold the substrate on the frame.  
         [0011]     Also, the holding means for substrate includes a press member for pressing and closely holding the substrate to the frame with specific elasticity in at least one side of the substrate.  
         [0012]     Here, the press member preferably includes a projection for insertion in its end so that it can be elastically held with the frame by means of the elastic means. the frame further comprises a first protruded groove and a second protruded groove, where the projection is inserted into the first protruded groove for holding the substrate to the frame, and the projection is inserted into the second protruded groove for releasing the substrate from the frame.  
         [0013]     Also, the press member may form a coupling hole in which a coupling member is anchored, and may suspend an elastic member in the coupling member to be elastically connected with the frame.  
         [0014]     Also, the holding means includes at least one side supporter for supporting a side of the substrate.  
         [0015]     Also, the holding means includes at least one bottom supporter for anchoring and supporting the substrate in a lower part of the substrate.  
         [0016]     Here, a groove in which the substrate is preferably anchored is formed in the bottom supporter, and the groove is preferably slantwise formed in at least one side so that it provides a margin for anchoring the substrate.  
         [0017]     In addition, the protruded groove, in which the lower part of the substrate supported and anchored, has round edges.  
         [0018]     Also, the holding tray for substrate further includes at least one substrate alignment means formed to align the substrate on the frame.  
         [0019]     Here, the substrate alignment means includes a reference element formed to provide a reference point in at least one edge on the frame when the substrate is anchored on the frame, and an adjustment element for adjusting the substrate so that the substrate can be in contact with the reference element in at least one edge on the frame when the substrate is anchored on the frame.  
         [0020]     The reference element may be a reference pin formed in the reference point of at least one edge on the frame, and may be a reference hole where a reference rod can pass through the reference hole, and the adjustment element is an adjustment hole formed in at least one edge on the frame where an adjustment rod can pass through the adjustment hole.  
         [0021]     Also, the substrate alignment means includes a through hole formed in at least two edges of the frame so that a substrate handler can pass through the through hole.  
         [0022]     Also, the holding means for substrate is composed of clamps formed so that the substrate anchored on the frame can be held in at least one edge on the frame, and the clamp is a press member for pressing and closely holding the substrate to the frame with elasticity in at least one side of the substrate.  
         [0023]     The press member includes an elastic means, and also includes a projection for insertion in its end so that it is elastically coupled with the frame by means of the elastic means, where a groove into which the projection for insertion is inserted is formed in the frame.  
         [0024]     Here, the press member forms a coupling hole in which a coupling member is anchored, and suspends an elastic member in the coupling member to be elastically connected with the frame.  
         [0025]     Also, the press member is formed in a manner that it can be continuously operated from a first position for press the substrate to a second position releasing the substrate, and vice versa. The continuous operation of the press member may be conducted by a substrate clamp pusher.  
         [0026]     Here, the continuous operation of the press member is preferably conducted by a guide tool. The guide tool may include a guide protrusion formed in the projection for insertion received into the frame of the press member, and a guide groove formed in the frame to match the guide protrusion. In another embodiment, the guide tool may include a guide groove formed in the projection for insertion received into the frame of the press member, and a guide protrusion formed in the frame to match the guide groove.  
         [0027]     Also, the continuous operation of the press member is conducted by moving the press member up or down while turning the substrate clamp pusher.  
         [0028]     A substrate alignment system using the holding tray according to the present invention includes the holding tray for substrate, a mask pressed in one surface of the substrate held in the holding tray, and an alignment plate including a flat chuck formed to press the substrate and a driving means formed to be connected to the flat chuck to move the flat chuck so that the holding tray can be supported, held and aligned.  
         [0029]     The substrate alignment system using the holding tray according to the present invention further includes at least one coupling unit in the holding tray and an alignment plates which are coupled with each other to hold the holding tray.  
         [0030]     Also, a method for aligning a substrate according to the present invention includes steps of anchoring a tray where the tray provided in the frame is anchored onto a tray support means; providing a substrate where the substrate is entered onto the tray; handling the substrate where the substrate entered onto the tray is supported by a substrate handler; anchoring the substrate where the substrate supported by the substrate handler is anchored onto the tray; aligning the substrate where the substrate is aligned by a substrate alignment means; holding the aligned substrate where the aligned substrate is held on the tray by a holding means for substrate; standing the tray where the tray onto which the substrate is anchored is stood from the tray support means; and inputting the substrate anchored tray where the tray is input into a chamber. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0031]     A more complete appreciation of the invention and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein:  
         [0032]      FIG. 1A  is a cross sectional view showing a holding apparatus aligned to a substrate.  
         [0033]      FIG. 1B  is a cross sectional view showing the holding apparatus of  FIG. 1A  moving down to the substrate.  
         [0034]      FIG. 2A  is a front view showing a holding tray.  
         [0035]      FIG. 2B  is a rear view showing the holding tray.  
         [0036]      FIG. 2C  is a side view showing the holding tray.  
         [0037]      FIG. 3A  is a perspective view showing a first holding means  110  holding an upper left corner of a substrate, and a second holding means  120  supporting the left side of the substrate.  
         [0038]      FIG. 3B  is a perspective view showing a third holding means  130  and a fourth holding means  140  holding a lower left corner of a substrate, and a second holding means  120  supporting the left side of the substrate.  
         [0039]      FIG. 3C  is a perspective view showing the third holding means  130  in detail.  
         [0040]      FIG. 4A  is a perspective view showing the first holding means  110  before being coupled with the frame.  
         [0041]      FIG. 4B  is a perspective view showing the first holding means  110  after being coupled with the frame,  
         [0042]      FIG. 4C  is a perspective view showing that the third holding means  130  when the third holding means is coupled with the frame.  
         [0043]      FIG. 4D  is a perspective view showing a protruded groove formed in a rear surface of the frame of  FIG. 4C .  
         [0044]      FIG. 5A  is a side view showing the third holding means  130  before being coupled with the tray.  
         [0045]      FIG. 5B  is a side view showing the third holding means  130  after being coupled with the tray.  
         [0046]      FIG. 5C  is a cross sectional view showing the third holding means  130  and the fourth holding means  140 .  
         [0047]      FIG. 6A  is a front view showing the holding tray constructed as one embodiment of the present invention.  
         [0048]      FIG. 6B  is a front view showing the holding tray constructed as a modified embodiment of the present invention.  
         [0049]      FIGS. 7A and 7B  are partial perspective views showing operation of the third holding means.  
         [0050]      FIGS. 8A and 8B  are perspective views showing one example of the third holding means of  FIGS. 7A and 7B .  
         [0051]      FIGS. 9A and 9B  are perspective views showing another example of the third holding means of  FIGS. 7A and 7B .  
         [0052]      FIG. 10A  is a cross sectional view showing arrangements of the holding tray, the mask tray, and the chuck plate of the substrate alignment system.  
         [0053]      FIG. 10B  is a cross sectional view showing coupling of the holding tray, the mask tray, and the chuck plate of the substrate alignment system.  
         [0054]      FIG. 11A  is a perspective view showing a substrate, a substrate frame and a tray in the holding tray of the substrate alignment system.  
         [0055]      FIG. 11B  is a perspective view showing the holding tray when the substrate is detached from the holding tray of the substrate alignment system.  
         [0056]      FIG. 11C  is a perspective view showing the holding tray when the substrate is attached in the holding tray of the substrate alignment system.  
         [0057]      FIG. 12A  is a perspective view showing the substrate alignment system when the holding tray, the mask tray, and the chuck of the substrate alignment system are coupled together.  
         [0058]      FIG. 12B  is a perspective view showing the substrate alignment system when the substrate is coupled with the mask.  
         [0059]      FIG. 13A  is a cross sectional view showing upper portion of the substrate alignment system when the holding tray, the mask tray, and the chuck of the substrate alignment system are coupled together.  
         [0060]      FIG. 13B  is a perspective view showing part of the lower portion when the substrate, holding means, and the chuck of the substrate alignment system are coupled together.  
         [0061]      FIG. 14A  is a schematic view showing incomplete contact of the substrate with a mask.  
         [0062]      FIG. 14B  is a schematic view showing complete contact of the substrate with a mask.  
         [0063]      FIG. 15A  is a cross sectional view showing operation of the third holding means  130 .  
         [0064]      FIG. 15B  is a cross sectional view showing incomplete contact of the substrate with a mask tray.  
         [0065]      FIG. 15C  is a cross sectional view showing complete contact of the substrate with a mask tray.  
         [0066]      FIG. 16  is a schematic view showing a step of anchoring the tray in the method for aligning the substrate using the holding tray.  
         [0067]      FIG. 17  is a schematic view showing a step of placing the substrate in the method for aligning the substrate using the holding tray.  
         [0068]      FIG. 18  is a schematic view showing a step of handling the substrate in the method for aligning the substrate using the holding tray.  
         [0069]      FIG. 19  is a schematic view showing a step of anchoring the substrate in the method for aligning the substrate using the holding tray.  
         [0070]      FIG. 20  is a schematic view showing a step of aligning the substrate in the method for aligning the substrate using the holding tray.  
         [0071]      FIG. 21  is a schematic view showing a step of holding the substrate in the method for aligning the substrate using the holding tray.  
         [0072]      FIGS. 22A and 22B  are schematic views showing steps of standing the tray in the method for aligning the substrate using the holding tray. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0073]      FIG. 1A  is a cross sectional view showing a holding apparatus aligned to a substrate, and  FIG. 1B  is a cross sectional view showing the holding apparatus of  FIG. 1A  moving down to the substrate.  
         [0074]     Referring to  FIGS. 1A and 1B , a substrate  10  is mounted on a frame  20 , and a mask  30  is positioned between the substrate  10  and the frame  20 . The mask  30  has a desired pattern to be formed on the substrate  10 . A holding unit  50  supporting the substrate  10  is positioned in the upper portion of the substrate  10 . The holding unit  50  includes a magnetic plate  52  and a rubber magnet  54  stuck to a lower surface of the magnetic plate  52 .  
         [0075]     The holding unit  50  is positioned on the substrate  10  by means of robot return so as to hold the substrate  10 , and the mask  30  is aligned to the substrate  10 .  
         [0076]     Then, the holding unit  50  moves down to the substrate  10 , as shown in  FIG. 1B . As the holding unit  50  descends, the mask  30 , which is made of metal materials and positioned in the lower portion of the substrate  10 , is attracted by a magnetic force, and the shape of the mask  30  is modified pushing a central region of the mask  30  toward the holding unit  50 , and simultaneously closely pressing the substrate  10 . Meanwhile, the rubber magnet  54  of the holding unit  50  is anchored on the rear surface of the substrate  10  to support the substrate  10 . As described above, the deposition is conducted under this condition, where the mask  30  is in close contact with the substrate  10 .  
         [0077]     However, as the mask  30  approaches the holding unit  50  making the gap between the mask  30  and holding unit  50  narrower, the central region of the mask  30  moves first, and the movement causes a mismatch between the mask  30  and the holding unit  50 . Accordingly, the central region of the mask  30  satisfactorily closely adheres to the substrate  10 , while the edge of the mask  30  does not sufficiently closely adhere to the substrate  10 . As a result, the pattern to be formed on the substrate  10  is not as accurate as desired, resulting in a poor product. Also, as the central region of the mask  30  moves up prior to the other region, there exists a problem that the substrate  10  is damaged by sliding movement when the mask  30  closely contacts the substrate  10 .  
         [0078]     Even when the substrate  10  contacts mask  30  after alignment process, there exists a fine gap between the substrate  10  and the mask  30 , because the substrate  10  is not perfectly parallel to the mask  30 , and therefore a fine slide is caused between the substrate  10  and the mask  30 , lowering alignment precision, and therefore the alignment process should be repeated several times.  
         [0079]     Hereinafter, preferable embodiments of a holding tray for substrate according to the present invention will be described with reference to the accompanying drawings.  
         [0080]     Here, when one element is connected to another element, one element may be not only directly connected to another element but also indirectly connected to another element via another element. Further, irrelevant elements are omitted for clarity.  
         [0081]      FIG. 2A  is a front view showing a holding tray according to an embodiment of the present invention.  FIG. 2B  is a rear view showing the holding tray according to the embodiment of the present invention, and  FIG. 2C  is a side view showing the holding tray according to the embodiment of the present invention.  
         [0082]     Referring to  FIGS. 2A  to  2 C, the holding tray according to the present invention includes a substrate  10  on which a deposition is made, and a tray  60  which holds the substrate  10  and is provided with holder members  66  and adhesion members  68 .  
         [0083]     The plate-type tray  60  is suitably constructed to hold the frame  70 , and further constructed to have holding plates  72  to hold the frame. The frame  70  equipped in the tray  60  is suitably formed to hold the substrate  10 , and first holding means  110 , second holding means  120 , third holding means  130 , and fourth holding means  140  are formed to hold the substrate  10 . A transporting means  64  is formed in a lower portion of the tray  60  so that the substrate  10  can be transported into a vacuum chamber, and a guide means  62  is formed in an upper portion of the tray  60  so that transportation of the substrate  10  is guided while being transported by the transporting means  64 . A plurality of holder members  66  and adhesion members  68  are formed on the plate of the tray  60  along an edge of the frame  70 , and openings are formed in the holder member  66 .  
         [0084]      FIG. 3A  is a perspective view showing a first and a second holding means  110  and  120  located at an upper left corner of a substrate of the holding tray according to the embodiment of the present invention.  FIG. 3B  is a perspective view showing a second, a third, and a fourth holding means located at a lower left corner of a substrate of the holding tray according to an embodiment of the present invention.  FIG. 3C  is a perspective view showing a third holding means  130 , a coupling member  135  and an elastic means  136  of the holding tray according to the embodiment of the present invention.  
         [0085]     Referring to  FIGS. 3A  to  3 C, the first holding means  110  and the third holding means  130 , which are positioned on the upper portion and the lower portion of the substrate  10 , respectively, are formed to elastically hold and support the substrate  10 . Here, elasticity, which is required for the holding means  110  and  130  to hold and to support the substrate  10 , is accomplished through an elastic means  136 . The elastic means  136  is included in the holding means  110  and  130 , and the elastic means  136  is preferably a spring member. The elastic means  136  is formed in a manner to make a coupling member  135  being anchored and sustained in the coupling hole that is formed in the holding means  130 , as shown in  FIG. 3C . Only the third holding means  130  is described with reference to the accompanying drawings, but such a configuration is also applicable to the first holding means  110 .  
         [0086]     A first and a third projections  111  and  131  are formed in the first and third holding means  110  and  130 , respectively, to be inserted into the protruded grooves  71   a  or  71   b , and  73   a  or  73   b , respectively, which are formed on the frame  70 . The protruded grooves  71   a  and  71   b  formed in the upper portion of the frame  70  are formed to receive the first projection  111  of the first holding means  110 . The first holding means  110  is inserted into the protruded groove  71   a  to press the substrate  10 , and the holding means  110  is inserted into the protruded groove  71   b  to depress the substrate  10 . The protruded grooves  73   a  and  73   b  formed in the lower portion of the frame  70  are formed to receive the third projection  131  of the third holding means  130 . The holding means  130  is coupled to the protruded groove  73   a  to press the substrate  10 , and coupled to the protruded groove  73   b  to depress the substrate  10 .  
         [0087]     When the substrate  10  is being mounted in the frame  70 , the elastic means of the holding means  110  and  130  are first stretched under tension, and after the substrate  10  is completely anchored in the frame  70 , the elastic means are released having the holding means  110  and  130  press the substrate  10 . By this steps, the substrate  10  is anchored to the frame  70 .  
         [0088]     Also, the second holding means  120  positioned in the side of the substrate  10  is formed to be held through grooves (not shown) formed in the frame  70 , and a step height is formed to receive thickness of the substrate  10  so that the substrate  10  can be received in a direction into which the substrate  10  is charged. That is to say, the holding means  120  of the side of the substrate forms the protruded grooves along with the frame  70  while adhering to the frame  70 , and therefore thickness of the substrate  10  is received into the protruded grooves. When the substrate  10  is mounted on the frame  70 , the substrate  10  is received into the step height of the holding means  120 , namely the protruded groove formed along with the frame  70 . The holding means  120  assists supporting the substrate  10  when the substrate  10  is held and supported by the frame  70  via the aforementioned holding means  110  and  130 .  
         [0089]      FIG. 4A  is a perspective view showing the first and second holding means  110  and  120  of the holding tray according to the embodiment of the present invention before the holding means  110  and  120  are coupled with the frame.  FIG. 4B  is a perspective view showing the holding means  110  and  120  of the holding tray according to the embodiment of the present invention after the holding means  110  and  120  are coupled with the frame.  
         [0090]     Referring to  FIGS. 4A and 4B , when the substrate  10  is held in the frame  70 , the substrate  10  is supported by the first holding means  110  in the upper portion of the substrate  10 . The holding means  110  formed to hold the upper portion of the substrate  10  is formed to have a first projection  111  in somewhere of the holding means  110  in a manner that the projection  111  can be received into the protruded groove  71   a  or  71   b  formed in the frame  70 . The protruded groove  71   a  formed in the frame  70  receives an elastic means that is included in the holding means  110 , and are formed to hold one end of the elastic means.  
         [0091]     When the substrate  10  is being held, the first holding means  110  is pulled in a direction away from the frame  70  under tension provided by the elastic means. When a side of the substrate  10  is completely charged into the protruded groove of the second holding means  120 , the first holding means  110  is released, relieving the tension of the elastic means, to hold the substrate  10 . The holding means  110  engaged with the elastic means is to be held and supported by pressure of the elastic means, and closely adheres the charged substrate  10  due to the tension of the elastic means.  
         [0092]      FIG. 4C  is a perspective view showing the third holding means of the holding tray according to an embodiment of the present invention when the third holding means is coupled with the frame.  FIG. 4D  is a cross sectional view showing a groove formed in a rear surface of the cross sectional view shown in  FIG. 4C .  
         [0093]     Referring to  FIGS. 4C and 4D , when the substrate  10  is held in the frame  70 , the substrate  10  is supported by the third holding means  130  in the lower portion of the substrate  10 . The holding means  130  formed to hold the lower portion of the substrate  10  is formed to have a third projection  131  in somewhere of the holding means  130  in a manner that the projection  131  can be received into the protruded groove  73   a  or  73   b  formed in the frame  70 . The protruded groove  73   a  and  73   b  formed in the frame  70  receives the elastic means that is included in the holding means  130 , and the protruded groove  73   a  is formed through the rear surface of the holding tray where the holding means  130  is pressured to the frame  70 . The protruded groove  73   a  has a shape for holding one end of the elastic means. Also, a coupling holes are formed in the first and third holding means  110  and  130 , where the other end of the elastic means anchored. And the coupling member  135  (see  FIG. 3C ) is formed in the elastic means. The other end of the elastic means is sustained to the coupling member  135  to be anchored to the coupling hole. Here, only the protruded groove  73   a  is described with reference to the accompanying drawings, but such a configuration is also applicable to the protruded groove  71   a  of the specification. The elastic means is coupled only with the protruded groove  73 A (not with  73 B). When the holding means  130  holds the substrate, both of the elastic means and the projection  131  are coupled with the groove  73   a . When the holding means releases the substrate, the elastic means is coupled with the groove  73   a , but the projection is coupled with the groove  73   b . At this time, the elastic means is expected or compressed in the state that the coupling member  135  is fixed to a predetermined part of a vertical opening formed in the holding means  130 . Alternatively, the coupling member may move up and down through the vertical opening when the projection of the holding means moves between the grooves  73   a  and  73   b , so that the holding means freely moves up and down even when the elastic means is permanently coupled with the groove  73 A.  
         [0094]      FIG. 5A  is a side view showing the third holding means  130  of the holding tray according to an embodiment of the present invention before the holding means  130  is coupled with the tray.  FIG. 5B  is a side view showing the third holding means  130  of the holding tray according to an embodiment of the present invention after the holding means  130  is coupled with the tray.  FIG. 5C  is a cross sectional view showing the third holding means  130  and fourth holding means  140  of the holding tray according to an embodiment of the present invention.  
         [0095]     Referring to  FIGS. 5A  to  5 C, when the substrate  10  is held in the frame  70 , the substrate  10  is supported by the third holding means  130  in the lower portion of the substrate  10 . The holding means  130  formed to hold the lower portion of the substrate  10  is formed to have the third projection in somewhere of the holding means  130  in a manner that it can be received into the protruded groove  73   a  or  73   b  formed in the frame  70 . The protruded grooves  73   a  and  73   b  formed in the frame  70  receive the elastic means further included in the holding means  130 , and is formed to hold one end of the elastic means.  
         [0096]     When the substrate  10  is being held, the third holding means  130  is pulled in a direction away from the frame  70  under tension provided by the elastic means. When a side of the substrate  10  is completely charged into the protruded groove of the second holding means  120 , the third holding means  130  is released, relieving the tension of the elastic means, to hold the substrate  10 . The holding means  130  engaged with the elastic means is to be held and supported by pressure of the elastic means, and closely adheres the charged substrate  10  due to the tension of the elastic means.  
         [0097]     Referring to  FIGS. 5A  to  5 C again, when the substrate  10  is held in the frame  70 , the substrate  10  is supported by the fourth holding means  140  in the lower portion of the substrate  10 . The holding means  140  formed to support the lower portion of the substrate  10  is formed to be held in grooves formed in the frame  70 . The holding means  140  has protruded grooves in the upper portion to support the substrate  10 . As shown in  FIG. 5C , the protruded grooves includes a lower surface  140   b  having a predetermined spacing, a vertical side  140   a  formed perpendicular to the lower surface  140   b , and an inclined side  140   c  formed to be inclined to the vertical side  140   c . The protruded groove has rounded edges so that the substrate  10  is smoothly charged into the opening portion of the protruded groove formed to support the substrate  10 . When the substrate  10  is mounted in the frame  70 , the lower portion of the substrate  10  is anchored onto the holding means  140 . Describing more accurately, the lower portion of the substrate  10  is anchored to the lower surface  140   b  of the protruded groove formed in the holding means  140 .  
         [0098]     The vertical side  140   a  of the protruded groove is formed to closely adhere to the frame  70 , and then the substrate  10  closely adhere to the vertical side  140   a . That is to say, the substrate  10  pressed by the holding means  140  closely adhered to be parallel to the vertical side  140   a.    
         [0099]     The lower surface  140   b  of the holding means  140 , which is formed to provide the substrate  10  with the gap, supports the substrate  10 , and the gap has a margin in a manner that the substrate  10  can be coupled to or separated from the frame  70  while being supported by the lower surface  140   b.    
         [0100]     The inclined side  140   c , which is formed to be inclined to the vertical side  140   a  of the holding means  140 , is downwardly inclined at the side of the frame  70  to allow a margin that would guide the substrate  10  when the substrate  10  is anchored into the protruded groove of the holding means  140   
         [0101]     Hereinafter, another embodiment of the holding tray for substrate according to the present invention will be described in detail with reference to the accompanying drawings.  
         [0102]      FIG. 6A  is a front view showing a holding tray for substrate according to an embodiment of the present invention.  FIG. 6B  is a front view showing a holding tray for substrate according to a modified embodiment of the present invention.  
         [0103]     A plate type tray  60  is suitably formed to receive a frame  70 , and a holding plate for frame (not shown) is additionally formed to be held in the tray  60 . The frame  70  received into the tray  60  is suitably formed to receive a substrate  10 , and the holding means for substrate  110 ,  120 ,  130 , and  140  are formed to hold the substrate  10 . A transporting means  64  is formed in the lower portion of the tray  60  so that the substrate  10  can be transported to a vacuum chamber, and a guide means  62  is formed in the upper portion of the tray  60  so that the transportation of the substrate  10  can be guided while being transported by the transporting means  64 . A plurality of holder members  66  and adhesion members  68  are formed on the plate of the tray  60  along edges of the frame  70 , and openings are formed in the holder member  66 .  
         [0104]     Also as shown in  FIG. 6A , in order to align the substrate anchored onto the frame  70  of the tray  60 , a plurality of reference pins  76  are formed on the frame  70 . A plurality of the reference pins  76  functions as a reference point that provides a suitable position of the substrate  10  when the substrate  10  is anchored onto the frame  70 . Also, four adjustment holes  77  are formed on the frame  70 . Adjustment means (not shown in the present drawings) pass through the four adjustment holes  77  in a manner that the substrate  10  can be moved to a desired position so that the edge of the substrate  10  is in exact contact with the reference pins  76 . The adjustment means (not shown in the present drawings) may pass through the adjustment hole  77  from the rear surface of the tray  60 , and then the position of the substrate  10  may be adjusted, based on the reference pins  76 .  
         [0105]      FIG. 6B  shows a modified example of the configuration shown in  FIG. 6A . A plurality of reference holes  78  may be formed on the frame  70  as the reference means. When such a reference hole  78  is formed, the reference means (not shown in the present drawings) pass through the reference hole  78  from the rear surface of the tray  60  to provide reference points, when the substrate  10  is anchored on the frame  70 . Then, the adjustment means may be used by means of the adjustment hole  77  as described above to adjust the position of the substrate  10 .  
         [0106]     Reference elements  76  or  78  are formed on at least one edge of the frame  70  to provide reference points for the substrate  10 . On the other edge of the frame  70  on which the reference elements  76  or  78  are not formed, the adjustment holes  77  are formed.  
         [0107]     Preferably in the rectangular frame  70 , two reference elements  76  or  78  are formed in two nearby edges, and two adjustment holes  77  are formed in the other two edges.  
         [0108]     Four through holes  75  are formed on the frame  70  of the tray  60  in a manner that a substrate handler, which will be described later, can pass through the through holes. The substrate handler passes through the tray  60  from the rear surface of the tray  60  via the through holes  75  to anchor the substrate  10  onto the frame  70  in the front of the tray  60 . In order to steadily anchor the substrate  10 , two through holes  75  are formed on each of two edges of the frame  70  in this embodiment.  
         [0109]     The frame  70  received into the tray  60  is suitably formed to receive the substrate  10 , and the holding means for substrate  110 ,  120 ,  130 , and  140  are formed to hold the substrate  10 .  
         [0110]      FIGS. 7A and 7B  are partial perspective views showing operation of the holding means according to an embodiment of the present invention.  
         [0111]     The second holding means  120  positioned in the side of the substrate  10  is formed to be held in the grooves (not shown) formed in the frame  70 , and a step height is formed to receive thickness of the substrate  10  so that the substrate  10  can be received in a direction into which the substrate  10  is charged. That is to say, the holding means for substrate  120  of the side surface forms the protruded grooves along with the frame  70  while it adheres to the frame  70 , and therefore thickness of the substrate  10  is received into the protruded grooves. When the substrate  10  is mounted on the frame  70 , the substrate  10  is received into the step height of the second holding means  120 , namely the protruded groove formed along with the frame  70 . The holding means for substrate  120  assists the substrate  10  when the substrate  10  is held and supported to the frame  70  by the aforementioned holding means for substrate  110  and  130 .  
         [0112]     The third holding means  130  positioned in the lower portion of the substrate  10  is formed to hold and support the substrate  10  with elasticity. Here, the elasticity, with which the holding means  130  hold and support the substrate  10 , is accomplished by an elastic means  136  that is further included in the holding means  130 , and the elastic means  136  is preferably a spring member.  
         [0113]     When the substrate  10  is being mounted in the frame  70 , the elastic means of the third holding means  130  is first stretched under tension, and after the substrate  10  is completely anchored in the frame  70 , the elastic means are released having the holding means  130  press the substrate  10 . By this steps, the substrate  10  is anchored to the frame  70 .  
         [0114]     A projection  131  is formed in the holding means  130  to be inserted into the protruded grooves formed on the frame  70 . The projection  131  is formed to elastically hold the holding means  130  on the frame  70  by means of the aforementioned elastic means  136 .  
         [0115]     The holding means  130  functions as a clamp, and presses and holds the substrate  10  closely to the frame  70  with elasticity when the substrate  10  is anchored onto the frame  70 .  
         [0116]     The third holding means  130  is formed to be engaged in a first position ( FIG. 7A ) or a second position ( FIG. 7B ). The first position ( FIG. 7A ) presses the substrate  10  on the frame  70 , and the second position ( FIG. 7B ) releases the substrate  10  so that the third holding means  130  does not interfere the input of the substrate  10  when the substrate  10  is charged into the frame  70 . The continuous operation of such a holding means  130  is achieved by employing a substrate clamp pusher (not shown).  
         [0117]     One example of such a third holding means  130  is shown in  FIG. 8A  and  FIG. 8B . The elastic means  136  is formed to be sustained to the coupling member  135  so that the coupling member  135  can be anchored to the coupling hole formed in the third holding means  130 .  
         [0118]     The continuous operation to the aforementioned first position and the aforementioned second position of the third holding means  130  may be conducted through the guide apparatus. At least one guide protrusion  133  is formed on the projection for insertion  131  of the third holding means  130 . A guide groove  79  is formed inside the frame  70 . More specifically, the projection  131  of the third holding means  130  is inserted into a portion of inside of the protruded groove of the frame  70 , so that it can be matched with the guide protrusion  133  formed on the projection for insertion  131  of the third holding means  130 . The guide groove  79  formed in the frame  70  is formed so that the third holding means  130  can move to the aforementioned first position and the aforementioned second position, respectively, when the guide protrusion  133  of the third holding means  130  moves along with the guide groove  79 . That is to say, the guide groove  79  is spirally formed in the inner part of the cylindrical protruded groove formed to receive the cylindrical projection for insertion  131 , and therefore the guide groove  79  allows the third holding means  130  to move from the first position to the second position, and vice versa, when the guide protrusion  133  moves along the guide groove  79 .  
         [0119]     In addition to the aforementioned guide apparatus, although not shown in the drawings, it is also possible to form the guide grooves  79  in the projection  131  of the third holding means  130 . Then the guide protrusion  133  is formed inside the protruded groove of the frame  70 . The technical object of this embodiment is the same as described in the aforementioned guide apparatus.  
         [0120]     In another embodiment, the continuous operation of the third holding means  130  from the first position to the second position, and vice versa, may be conducted by fitting the third holding means  130  to a substrate clamp pusher  530 , as shown in  FIG. 9A  and  FIG. 9B .  
         [0121]     A convex  134  is formed in the projection  131  of the third holding means  130 . The convex  134  is formed in a section where the projection  131  is in contact with the substrate clamp pusher  530 . A concave  534  is formed in the substrate clamp pusher  530 , more specifically in the section where the substrate clamp pusher  530  is in complete contact with the projection  131  of the third holding means  130  so as to correspond to the convex  134 . Preferably, when the convex  134  and the concave  534  are fitted to each other, the section in which the convex  134  of the third holding means  130  is formed, and the section in which the concave  534  of the substrate clamp pusher  530  is formed, are in complete contact with each other, because the convex  134  and the concave  534  are designed as the same plate type.  
         [0122]     The completely fitted third holding means  130  is engaged with a linear motion and a rotary motion of the substrate clamp pusher  530  and therefore the continuous operation moving between the first position and the second position is accomplished.  
         [0123]     Only the third holding means  130  is described with reference to the accompanying drawings, but such a configuration is also applicable to the first holding means  110  of the specification.  
         [0124]     Hereinafter, a substrate alignment system using the holding tray for substrate according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.  
         [0125]      FIG. 10A  is a cross sectional view showing arrangement of the holding tray for substrate, the mask tray, and the chuck plate of the substrate alignment system according to an embodiment of the present invention.  FIG. 10B  is a cross sectional view showing coupling of the holding tray for substrate, the mask tray, and the chuck plate of the substrate alignment system according to an embodiment of the present invention.  
         [0126]     Referring to  FIGS. 10A and 10B , the tray  60  is arranged prior to a position in which a chuck  92  of an alignment plate  90  is positioned so as to carry out a vacuum deposition on the substrate  10  held in the tray  60 . Also, a mask tray  80  for forming a pattern in the substrate  10  is arranged prior to the tray  60  upon the vacuum deposition. That is to say, the tray  60  is arranged between the mask tray  80  and the alignment plate  90 . Then, the tray  60  is coupled to the chuck  92  of the alignment plate  90 . The mask tray  80  is coupled to the tray  60  at the opposite side where the chuck  92  of the alignment plate  90  is coupled to the tray  60 . A shadow mask  30  (see  FIG. 12B ), in which the pattern is formed on a surface where the deposition takes place, is coupled to the mask tray  80 .  
         [0127]     Before a deposition is carried out, alignment should be accomplished between the substrate  10  mounted on the tray  60 , and the shadow mask mounted on the mask tray  80 . For such an alignment, the alignment plate  90  is formed to move the tray  60  in all directions in a manner that the tray  60  on which the substrate  10  is mounted can be aligned with the shadow mask mounted on the mask tray  80 .  
         [0128]     Reference numeral  82  represents the guide means of the mask tray, and reference numeral  84  represents the transporting means of the mask tray.  
         [0129]      FIG. 11A  is a perspective view showing the substrate, the substrate frame, and the tray in the holding tray of the substrate alignment system according to an embodiment of the present invention.  FIG. 11B  is a perspective view showing the holding tray when the substrate is detached from the holding tray of the substrate alignment system according to an embodiment of the present invention.  FIG. 11C  is a cross sectional view showing the holding tray when the substrate is attached to the holding tray of the substrate alignment system according to an embodiment of the present invention.  
         [0130]     Referring to  FIGS. 11A  to  11 C, the frame  70  is coupled to a front of the tray  60 , and the substrate  10  is coupled to the frame  70  from the rear surface of the tray  60 . The frame  70  is coupled to an opening formed in the central region of the tray  60 , and then held to the tray  60  by the support plate for frame. Then, the substrate  10  is coupled to an opening formed in the frame  70 , and then held to the frame  70  by the holding means  110 ,  120 ,  130 , and  140 . The process that the substrate  10  is held to the frame  70  by means of the holding means  110 ,  120 ,  130 , and  140  is described above in detail. The holding tray for holding the substrate  10  is completely assembled by coupling the frame  80  and the substrate  10  to the tray  60 .  
         [0131]      FIG. 12A  is a perspective view showing the substrate alignment system when the holding tray, the mask tray, and the chuck of the substrate alignment system are coupled together according to an embodiment of the present.  FIG. 12B  is a perspective view showing the substrate alignment system when the substrate is coupled with the mask of  FIG. 12A .  FIG. 13A  is a cross sectional view showing part of the upper portion when the holding tray, the mask tray and the chuck of the substrate alignment system are coupled together according to an embodiment of the present invention.  FIG. 13B  is a perspective view showing part of the lower portion when the substrate, holding means, and the chuck of the substrate alignment system are coupled together according to an embodiment of the present invention.  
         [0132]     Referring to  FIGS. 12A  to  13 B, the substrate  10  mounted on the tray  60  and the shadow mask mounted on the mask tray  80  are aligned, and then are coupled with the chuck  92  of the alignment plate  90 . The chuck  92  of the alignment plate  90  includes a driving means, and therefore may move horizontally and reciprocally so that the substrate  10  comes into close contact with the shadow mask. At this time, the lower portion of the substrate  10  is held by the third and fourth holding means  130  and  140 , and the upper portion and side surface of the substrate  10  are also held and supported by the holding means  110  and  120 , respectively.  
         [0133]      FIG. 14A  is a schematic view showing incomplete contact of the mask  30  with the substrate  10  coupled with the chuck  92  of the substrate alignment system according to an embodiment of the present invention.  FIG. 14B  is a schematic view showing complete contact of the mask  30  with the substrate that is coupled with the chuck of the substrate alignment system according to an embodiment of the present invention.  
         [0134]     Referring to  FIGS. 14A and 14B , the substrate  10  and the mask  30  generate slip when the chuck  92  is pressed. That is to say, the substrate  10  and the mask  30  slid together, or are not parallel to each other. The slip is avoided if the chuck  92  is more pressed, but the alignment of the substrate  10  and the mask  30  is mismatched in the process, because pressure of the chuck  92  applied to the substrate  10  and pressure applied to the mask  30  are slightly different, and pressure distribution of the entire area of the substrate  10  is slightly not even.  
         [0135]      FIG. 15A  is a cross sectional view showing operation of the third holding means  130  of the substrate alignment system according to an embodiment of the present invention.  FIG. 15B  is a cross sectional view showing incomplete contact of the substrate with the mask tray in the substrate alignment system according to an embodiment of the present invention.  FIG. 15C  is a cross sectional view showing complete contact of the substrate with the mask tray in the substrate alignment system according to an embodiment of the present invention.  
         [0136]     Referring to  FIGS. 15A  to  15 C, the substrate  10  is pushed to the mask tray (not shown) by the force F 1  generated by the pressure of the chuck  92 , and therefore the substrate  10  closely adheres to the mask tray but incompletely. The substrate  10 , being pushed by the force (F 1 ) generated by the pressure, moves along the lower surface of the protruded groove  140   b  formed in the holding means  140 . Accordingly, there is no slide between the substrate  10  and the shadow mask  30  that contacts the substrate  10 , and free movement is accomplished while the substrate  10  and the shadow mask  30  is being combined even when the chuck plate  90  ( FIG. 10B ) is pressed. The substrate  10  should not be detached from the frame  70  since the holding means  140  provides only a slightly larger gap than the thickness of the substrate  10 .  
         [0137]     Also, the force (F 1 ) generated by the pressure is compensated with a force (F 2 ) generated by the pressures of the holding means  110  and  130 , which hold and support the substrate  10  by the pressures of the elastic means engaged with the holding means  110  and  130 . That is to say, although the aforementioned substrate  10  and the mask coalesced with the substrate  10  are pushed away by the force (F 1 ) generated by the pressure, the substrate  10  is pressed to closely adhere to the frame  70  that is mounted on the substrate tray  60 , and then the substrate  10  closely and completely adheres to the frame  70 . As described above, the coalescence with the substrate  10  and the mask is accomplished by means of the holding means  110 ,  120 ,  130 , and  140  without altering the alignment.  
         [0138]     Hereinafter, a preferred embodiment of a method for aligning the substrate using the holding tray according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.  
         [0139]     The method for aligning the substrate using the holding tray for substrate according to the present invention includes steps of providing a substrate for a holding tray, anchoring and supporting the substrates to protruded grooves of a second and a fourth holding means of the holding tray, and inserting projections for insertion of a first and a third holding means of the holding tray into the protruded groove formed in the frame to press and make closely contact of a front surface of the substrate with the frame.  
         [0140]     Referring to  FIGS. 11A  to  11 C, the frame  70  is coupled to a front of the tray  60 , and the substrate  10  is coupled to the frame  70  from the rear surface of the tray  60 . The frame  70  is coupled to an opening formed in the central region of the tray  60 , and then held to the tray  60  by the support plate for frame. Then, the substrate  10  is coupled to an opening formed in the frame  70 , and then held to the frame  70  by the holding means  110 ,  120 ,  130 , and  140 . The process where the substrate  10  is held to the frame  70  by means of the holding means  110 ,  120 ,  130 , and  140  was described above in detail. The holding process for holding the substrate  10  is completed by coupling the frame  70  and the substrate  10  to the tray  60 , and a step of providing the holding tray  60  with the substrate  10  is accomplished.  
         [0141]     Referring to  FIGS. 3A  to  3 C, the first and the third holding means  110  and  130 , which are positioned on the upper portion and the lower portion of the substrate  10 , respectively, are formed to elastically hold and support the substrate  10 . Here, elasticity, with which the holding means  110  and  130  hold and support the substrate  10 , is accomplished by an elastic means  136  that is further included in the holding means  110  and  130 , and the elastic means  136  is preferably a spring member. The elastic means  136  is formed to anchor a coupling member  135  to the coupling hole formed in the holding means  130  so that it can be sustained into the coupling member  135 , as shown in  FIG. 3C .  
         [0142]     The projections for insertion  111  and  131  are formed in the holding means  110  and  130 , respectively, to be inserted into the protruded grooves  71   a  or  71   b , and  73   a  or  73   b , respectively, formed on the frame  70 . The protruded grooves  71   a  and  71   b  formed in the upper portion of the frame  70  are formed to receive the projection for insertion  111  of the holding means  110 . The holding means  110  is inserted into the first protruded groove  71   a  when it presses the substrate  10 , and the holding means  110  is inserted into the second protruded groove  71   b  when it depresses the substrate  10 . The protruded grooves  73   a  and  73   b  formed in the lower portion of the frame  70  are formed to receive the projection for insertion  131  of the third holding means  130 . The third holding means  130  is inserted into the third protruded groove  73   a  when it presses the substrate  10 , and the third holding means  130  is inserted into the fourth protruded groove  73   b  when it depresses the substrate  10 .  
         [0143]     When the substrate  10  is being mounted in the frame  70 , the elastic means of the holding means  110  and  130  are first stretched under tension, and after the substrate  10  is completely anchored in the frame  70 , the elastic means are released having the holding means  110  and  130  press the substrate  10 . By this steps, the substrate  10  is anchored to the frame  70 .  
         [0144]     Also, the second holding means  120  positioned in the side surface is formed to be held in the grooves (not shown) formed in the frame  70 , and a step height is formed to receive thickness of the substrate  10  so that the substrate  10  can be received in a direction into which the substrate  10  is charged. That is to say, the side surface of the holding means  120  forms the protruded grooves along with the frame  70  while it adheres to the frame  70 , and therefore thickness of the substrate  10  is received into the protruded grooves. When the substrate  10  is mounted on the frame  70 , the substrate  10  is received into the step height of the holding means  120 , namely the protruded groove formed along with the frame  70 . The holding means  120  assists the substrate  10  when the substrate  10  is held and supported by the frame  70  by the aforementioned holding means  110  and  130 .  
         [0145]     Referring to  FIGS. 4A  to  4 D,  FIGS. 5A  to  5 C,  FIGS. 10A  to  10 B, and  FIGS. 15A  to  15 C, the substrate  10  is pushed to the mask tray  80  by the force (F 1 ) generated by the pressure of the chuck  92 , and therefore the substrate  10  closely adheres to the mask tray but incompletely. The substrate  10 , being pushed by the force (F 1 ) generated by the pressure, moves along the lower surface of the protruded groove  140   b  formed in the holding means  140 . Accordingly, there is no slide between the substrate  10  and the shadow mask  30  coalesced with the substrate  10 , and free movement is accomplished in the coalesced state even when the chuck plate  90  is pressed. The substrate  10  should not be detached from the frame  70 , because the holding means  140  provides only a slightly larger gap than the thickness of the substrate  10 .  
         [0146]     Also, the force (F 1 ) generated by the pressure is compensated with a force (F 2 ) generated by the pressures of the holding means  110  and  130  that hold and support the substrate  10  by the pressures of the elastic means engaged with the holding means  110  and  130 . That is to say, although the aforementioned substrate  10  and the mask coalesced with the substrate  10  are pushed away by the force (F 1 ) generated by the pressure, the substrate  10  is pressed to closely adhere to the frame  70  that is mounted on the substrate tray  60 , and then the substrate  10  closely and completely adheres to the frame  70 . As described above, the coalescence with the substrate  10  and the mask is accomplished by means of the holding means  110 ,  120 ,  130 , and  140  without altering the alignment.  
         [0147]     As described above, the method for aligning the substrate using the holding tray according to the present invention conducts a step of anchoring and supporting the substrate  10  to the protruded grooves of the second holding means  120  and the fourth holding means  140  of the holding tray  60 , and then a step of inserting the projections for insertion  111  of the first holding means  110  and the projections for insertion  131  of the third holding means  130  of the holding tray  60  into the protruded grooves for pressure  71   a  and  73   a , respectively, formed in the frame  70  to press and make close contact of the substrate  10  with the frame  70 .  
         [0148]     Hereinafter, a more preferred embodiment of a method for aligning the substrate using the holding tray according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.  
         [0149]      FIG. 16  is a schematic view showing a step of anchoring the tray in the method for aligning the substrate using the holding tray according to an embodiment of the present invention.  FIG. 17  is a schematic view showing a step of entering the substrate in the method for aligning the substrate using the holding tray according to an embodiment of the present invention.  FIG. 18  is a schematic view showing a step of handling the substrate in the method for aligning the substrate using the holding tray according to an embodiment of the present invention.  FIG. 19  is a schematic view showing a step of anchoring the substrate in the method for aligning the substrate using the holding tray according to an embodiment of the present invention.  FIG. 20  is a schematic view showing a step of aligning the substrate in the method for aligning the substrate using the holding tray according to an embodiment of the present invention.  FIG. 21  is a schematic view showing a step of holding the substrate in the method for aligning the substrate using the holding tray for substrate according to an embodiment of the present invention.  FIGS. 22A and 22B  are schematic views showing steps of lifting and standing the tray in the method for aligning the substrate using the holding tray for substrate according to an embodiment of the present invention.  
         [0150]     The method for aligning a substrate using the holding tray according to the present invention includes steps of anchoring a tray where the tray provided in the frame is anchored onto a tray support means, providing a substrate where the substrate is placed onto the tray, handling the substrate where the substrate placed onto the tray is supported by a substrate handler, anchoring the substrate where the substrate supported by the substrate handler is anchored onto the tray, aligning the substrate where the substrate is aligned by a substrate alignment means, holding the aligned substrate where the aligned substrate is held on the tray by holding means, standing the tray where the tray onto which the substrate is anchored is stood by the tray support means, and inputting the tray where the tray is delivered into a chamber.  
         [0151]     First, the tray  60  provided with the frame  70  is anchored onto a tray supporting means  410 . The tray supporting means  410  is formed to support the tray  60  in parallel, and the tray  60  is horizontally anchored onto the tray supporting means  410 . Then, a substrate  10  spaced apart by a robot arm  450  enters into the upper portion of the tray  60  placed on the tray supporting means  410 . When the substrate  10  enters by the robot arm  450 , the substrate handler  475  supports the substrate  10  by means of the through hole  75  formed on the frame  70  of the tray  60 . When the substrate  10  is supported by the substrate handler  475 , the robot arm  450  is completely retracted from the position  11  on which the tray  60  is placed. Therefore, the robot arm  450  is preferably formed and operated in a manner that it does not interfere with the substrate handler  475  in its operation.  
         [0152]     When the substrate  10  is supported by the substrate handler  475 , being spaced apart from the robot arm  450 , the substrate handler  475  is retracted through the through hole  475  formed on the frame  70 . Accordingly, the substrate  10  is spaced apart by the substrate handler  475 , and is anchored onto the frame  70  of the tray  60 .  
         [0153]     Then, the substrate  10  anchored onto the frame  70  of the tray  60  undergoes the alignment step. The alignment step is carried out by adjusting the substrate  10  in a manner that push pins  477  pass through the tray  60  from the rear surface of the tray  60  via the adjustment holes  77  formed on the frame  70 , and then two edges of the substrate  10  can be in contact with the reference pins  76 . The reference pins  76  are positioned in the nearest two edges of the rectangular frame  70 . Two adjustment holes  77  are formed in the other two edges in which the reference pins  76  are not formed, and the push pins  477  may adjust the position of the substrate  10  to the reference pins  76  by means of the adjustment holes  77 .  
         [0154]     Instead of the reference pin  76  formed on the frame  70 , the reference hole  78  ( FIG. 6B ) may be also formed to conduct the alignment step. At this time, a reference arm (not shown) is formed through the rear surface of the tray  60  to provide a reference position. Also, both of the reference pin  76  and the reference hole  78  may be formed at the same embodiment.  
         [0155]     According to the aforementioned alignment step, the substrate  10  is aligned on the frame  70  of the tray  60 , and then the substrate  10  is held on the aligned position by means of the first and the third holding means  110  and  130 . When the holding means  110  and  130  are input into the substrate  10  by means of the substrate clamp pusher (not shown), the holding means  110  and  130  moves from the second position, where the holding means does not interfere with the substrate  10 , to the first position, where the holding means are set to elastically hold the substrate  10  (see  FIG. 7 ). The holding means  110  and  130  moved to the first position are aligned to hold the substrate  10 .  
         [0156]     After the substrate  10  is aligned and held, the tray  60 , where the substrate  10  is horizontally mounted by the tray supporting means  410 , is lifted from the tray supporting means  410 , and is turned to a vertical standing position, and then proceeds into the process chamber (not shown).  
         [0157]     As described above, high-precision alignment may be accomplished and stable deposition process may be also conducted, because the perpendicularly arranged substrate may be held and supported according to the holding tray constructed according to the present invention, the substrate alignment system using the same, and the method thereof.  
         [0158]     Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes might be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.