Abstract:
A fabricating method of a semiconductor device may include forming a semiconductor die on a supporting wafer, and picking up the die from the wafer by attaching to the die a transfer unit, the transfer unit including a head unit configured to enable twisting movement, and performing the twisting movement. A fabricating method of a semiconductor device may include forming a first semiconductor device on a supporting wafer; and picking up the first semiconductor device from the wafer, moving the first semiconductor device onto a second semiconductor device, and bonding the first semiconductor device to the second semiconductor device while maintaining the first semiconductor device oriented so that a surface faces upwardly. A fabricating method of a semiconductor device may include forming a first semiconductor device on a supporting wafer, attaching to the first semiconductor device a transfer unit configured to enable twisting movement, and performing the twisting movement.

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
       [0001]    This application claims priority from Korean Patent Application No. 10-2011-0132977 filed on Dec. 12, 2011, in the Korean Intellectual Property Office (KIPO), the entire contents of which are incorporated herein by reference. 
       BACKGROUND 
       [0002]    1. Field of the Invention 
         [0003]    Example embodiments may relate to fabricating methods of semiconductor devices. Example embodiments also may relate to pick-up apparatuses for the semiconductor devices used therein. 
         [0004]    2. Description of the Related Art 
         [0005]    With the recent tendency for high performance and high speed memory devices, flip chip packages are drawing attention. The flip chip package is faster in operation and has better power consumption efficiency than a wire bonding package. In addition, a chip level stack has recently been enabled by using a through-silicon via (TSV) method, thereby fabricating a package having multiple flip chips stacked. 
         [0006]    In order to fabricate a package having multiple flip chips stacked, a process of picking up a semiconductor chip is required. However, a supporting wafer for supporting a wafer thinned in the course of fabricating flip chips is required, and before picking up the semiconductor chip, the supporting wafer is removed. 
         [0007]    Since a thin semiconductor chip having TSV is subjected to severer warpage and weaker in mechanical strength than a thick semiconductor chip, it is prone to damages. Therefore, after removing a supporting wafer from the semiconductor chip, a pick-up process using a transfer unit is required. In addition, in order to facilitate the pick-up process, a push-up unit is employed. 
       SUMMARY 
       [0008]    Example embodiments may provide fabricating methods of semiconductor devices that may be able to directly pick up semiconductor devices from supporting wafers without using a push-up unit without removing the supporting wafer and performs picking up, carrying and bonding by using a single transfer unit. 
         [0009]    Example embodiments also may provide pick-up apparatuses for semiconductor devices that may be able to pick up the semiconductor devices from supporting wafers to enable twisting movement without using a push-up unit while performing carrying and bonding of the semiconductor device. 
         [0010]    In some example embodiments, a fabricating method of a semiconductor device may include forming a semiconductor die on a supporting wafer; picking up the semiconductor die from the supporting wafer by attaching to the semiconductor die a transfer unit, the transfer unit including a head unit configured to enable twisting movement, and/or performing the twisting movement. 
         [0011]    In some example embodiments, after the semiconductor die is picked up from the supporting wafer, the semiconductor die may be moved to a top portion of a first semiconductor device by using the twisting movement, and/or the semiconductor die may be bonded to the first semiconductor device. 
         [0012]    In some example embodiments, the twisting movement may include performing circular arc exercise on the semiconductor die by using the transfer unit. 
         [0013]    In some example embodiments, picking up the semiconductor die from the supporting wafer may include picking up the semiconductor die by using the transfer unit after separating an edge of the semiconductor die from the supporting wafer by performing circular arc exercise on the semiconductor die. 
         [0014]    In some example embodiments, the twisting movement may further include separating one edge of the semiconductor die from the supporting wafer by performing circular arc exercise on the semiconductor die by using the transfer unit at an angle of θθ 0  with respect to a first direction perpendicular to a second direction from the transfer unit to the semiconductor die, and/or separating another edge of the semiconductor die from the supporting wafer by performing circular arc exercise on the semiconductor die by using the transfer unit at an angle of θ 2  with respect to the first direction. 
         [0015]    In some example embodiments, forming a semiconductor die on a supporting wafer may include forming a through-silicon via penetrating from a first surface of the semiconductor die to a second surface of the semiconductor die that faces the first surface. 
         [0016]    In some example embodiments, forming the through-silicon via may include providing a silicon wafer; forming the through-silicon via, exposed to one surface of the silicon wafer, in the silicon wafer; attaching the supporting wafer to the one surface of the silicon wafer; and/or polishing another surface of the silicon wafer to expose the through-silicon via. 
         [0017]    In some example embodiments, the semiconductor die may include multiple semiconductor dies, a gap between the multiple semiconductor dies may be greater than {(length of diagonal line−length of horizontal side)/2}, the length of diagonal line may be a length of a diagonal line on a vertical rectangular section of a given one of the multiple semiconductor dies, and/or the length of horizontal side may be a length of a horizontal side on a vertical rectangular section of the given one of the multiple semiconductor dies. 
         [0018]    In some example embodiments, a fabricating method of a semiconductor device may include forming a first semiconductor device on a supporting wafer, the first semiconductor device including a first surface on a bottom of the first semiconductor device and a second surface on a top of the first semiconductor device; picking up the first semiconductor device from the supporting wafer by using a transfer unit while maintaining the first semiconductor device oriented so that the second surface faces upwardly; moving the first semiconductor device onto a second semiconductor device while maintaining the first semiconductor device oriented so that the second surface faces upwardly; and/or bonding the first semiconductor device to the second semiconductor device while maintaining the first semiconductor device oriented so that the second surface faces upwardly. 
         [0019]    In some example embodiments, the transfer unit may include a head unit configured to enable twisting movement. 
         [0020]    In some example embodiments, picking up the first semiconductor device may include separating an edge of the first semiconductor device from the supporting wafer based on twisting movement, and/or picking up the first semiconductor device by using the transfer unit. 
         [0021]    In some example embodiments, performing the twisting movement may include performing circular arc exercise at an angle with respect to a direction from the transfer unit to the first semiconductor device, and/or the first semiconductor device may move according to the twisting movement. 
         [0022]    In some example embodiments, forming the first semiconductor device may include forming a through-silicon via that penetrates the first surface and the second surface. 
         [0023]    In some example embodiments, a pick-up apparatus may include a main body that includes a first axis extending in a first direction, a rotation driving unit rotating the first axis, an up-down driving unit moving the main body up and down, and/or a head unit connected to the first axis. The head unit may move in a direction in which the first axis rotates. 
         [0024]    In some example embodiments, a first semiconductor device may have a first surface configured to attach to a supporting wafer and a second surface different from the first surface, the head unit may have a surface configured to attach to the second surface of the first semiconductor device, and/or the first semiconductor device may move in a direction in which the head unit rotates. 
         [0025]    In some example embodiments, a fabricating method of a semiconductor device may include forming a first semiconductor device on a supporting wafer, attaching to the first semiconductor device a transfer unit configured to enable twisting movement, and/or performing the twisting movement to move the first semiconductor device. 
         [0026]    In some example embodiments, the first semiconductor device may include a surface on a top of the first semiconductor device, and/or when attaching to the first semiconductor device a transfer unit configured to enable twisting movement, the first semiconductor device may be maintained in an orientation so that the surface faces upwardly. 
         [0027]    In some example embodiments, the first semiconductor device may include a surface on a top of the first semiconductor device, and/or when performing the twisting movement to move the first semiconductor device, the first semiconductor device may be maintained in an orientation so that the surface faces upwardly. 
         [0028]    In some example embodiments, the first semiconductor device may include a first surface and a second surface different from the first surface, and/or forming the first semiconductor device may include forming a through-silicon via that penetrates the first and second surfaces. 
         [0029]    In some example embodiments, the twisting movement may separate an edge of the first semiconductor device from the supporting wafer. 
         [0030]    In some example embodiments, the fabricating method may further include bonding the first semiconductor device to a second semiconductor device. 
         [0031]    In some example embodiments, the first semiconductor device may include a surface on a top of the first semiconductor device, and/or when bonding the first semiconductor device to the second semiconductor device, the first semiconductor device may be maintained in an orientation so that the surface faces upwardly. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0032]    The above and/or other aspects and advantages will become more apparent and more readily appreciated from the following detailed description of example embodiments, taken in conjunction with the accompanying drawings, in which: 
           [0033]      FIGS. 1 to 7  are cross-sectional views illustrating intermediate structures for explaining a fabricating method of a semiconductor device according to some example embodiments; 
           [0034]      FIG. 8  is a plan view illustrating intermediate structures for explaining a fabricating method of a semiconductor device according to some example embodiments; 
           [0035]      FIG. 9  is a cross-sectional view illustrating a transfer unit of  FIG. 8 ; 
           [0036]      FIGS. 10 to 13  are cross-sectional views illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments; 
           [0037]      FIGS. 14 and 15  are cross-sectional views illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments; 
           [0038]      FIG. 16  is a perspective view illustrating a pick-up apparatus of a semiconductor device according to some example embodiments; 
           [0039]      FIG. 17  is a perspective view illustrating a pick-up apparatus of a semiconductor device according to some example embodiments; and 
           [0040]      FIG. 18  is a perspective view illustrating a pick-up apparatus of a semiconductor device according to some example embodiments. 
       
    
    
     DETAILED DESCRIPTION 
       [0041]    Example embodiments will now be described more fully with reference to the accompanying drawings. Embodiments, however, may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope to those skilled in the art. In the drawings, the thicknesses of layers and regions may be exaggerated for clarity. 
         [0042]    It will be understood that when an element is referred to as being “on,” “connected to,” “electrically connected to,” or “coupled to” to another component, it may be directly on, connected to, electrically connected to, or coupled to the other component or intervening components may be present. In contrast, when a component is referred to as being “directly on,” “directly connected to,” “directly electrically connected to,” or “directly coupled to” another component, there are no intervening components present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
         [0043]    It will be understood that although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and/or sections, these elements, components, regions, layers, and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, and/or section from another element, component, region, layer, and/or section. For example, a first element, component, region, layer, and/or section could be termed a second element, component, region, layer, and/or section without departing from the teachings of example embodiments. 
         [0044]    Spatially relative terms, such as “beneath,” “below,” “lower,” “above,” “upper,” and the like may be used herein for ease of description to describe the relationship of one component and/or feature to another component and/or feature, or other component(s) and/or feature(s), as illustrated in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. 
         [0045]    The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes,” and/or “including,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
         [0046]    Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
         [0047]    Reference will now be made to example embodiments, which are illustrated in the accompanying drawings, wherein like reference numerals may refer to like components throughout. 
         [0048]    Hereinafter, a fabricating method of a semiconductor device according to some example embodiments will be described with reference to  FIGS. 1 to 7 .  FIGS. 1 to 7  are cross-sectional views illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments. 
         [0049]    First, referring to  FIG. 1 , a semiconductor die  200  is formed on a supporting wafer  100 . In detail, a first connection pad  211  and a connection terminal  212  contacting the first connection pad  211  are formed on one surface of the semiconductor die  200 , and a wiring layer  230  is formed on the other surface of the semiconductor die  200 .  FIG. 1  illustrates that the connection terminal  212  is a solder ball. Although not illustrated in detail, circuit patterns, etc. may be formed on the wiring layer  230 . Next, the semiconductor die  200  is attached to one surface of the supporting wafer  100  by using the connection terminal  212  and is diced into a desired (or alternatively, predetermined) size to form a plurality of semiconductor dies  200 . Accordingly, the plurality of semiconductor dies  200 , which are spaced a desired (or alternatively, predetermined) distance (W) apart from each other and extend by a length L 1 , are formed. Each of the semiconductor dies  200  includes a pair of surfaces  210  and  220  facing each other. The first surface  210  faces the supporting wafer  100 , and the second surface  220  opposite to the first surface  210  is exposed upwardly. In order to increase an adhesive force with the semiconductor dies  200 , an adhesive layer  101  may be formed on one surface of the supporting wafer  100 . However, the adhesive layer  101  may not be formed. 
         [0050]    The semiconductor dies  200  may be formed of silicon, silicon-on-insulator (SOI), silicon germanium, or the like, but example embodiments are not limited thereto. Although not shown in detail, multiple wirings, multiple transistors, multiple passive elements, and so on, may be integrated into the semiconductor die  200 . In addition, although not shown, the connection terminal  212  may also be formed on the second surface  220  of the semiconductor die  200 .  FIG. 1  illustrates that the connection terminal  212  is a solder ball, but example embodiments are not limited thereto. For example, the connection terminal  212  may be a conductive bump, a conductive spacer, a pin grid array (PGA), and so on. 
         [0051]    Referring to  FIG. 2 , a transfer unit  500  enabling twisting movement is attached to the semiconductor die  200 . In detail, the transfer unit  500  including a head unit  530  enabling twisting movement is attached to the second surface  220  exposed to a top portion of the semiconductor die  200 . Although not shown in detail, the head unit  530 , including a vacuum absorbing means, may be attached to the second surface  220  of the semiconductor die  200 . Here, the twisting movement means that a position of the semiconductor die  200  is changed by performing circular arc exercise at a desired (or alternatively, predetermined) angle. For example, the head unit  530  may perform twisting movement by exercising in circular arcs in a first direction (X) or a second direction (Y) at a desired (or alternatively, predetermined) angle with respect to a third direction (Z). Alternatively, the head unit  530  may also perform twisting movement by exercising in circular arcs in the first direction (X) at a desired (or alternatively, predetermined) angle with respect to the second direction (Y). As the head unit  530  exercises in circular arcs, the semiconductor die  200  also exercises in circular arcs, so that it is twisted up and down and left and right. In more detail, when the head unit  530  performs twisting movement by exercising in circular arcs at a desired (or alternatively, predetermined) angle in the first direction (X) with respect to the third direction (Z), the semiconductor die  200  performs circular arc exercise, while reciprocating left and right at the desired (or alternatively, predetermined) angle in the first direction (X) with respect to the third direction (Z). In addition, when the head unit  530  performs twisting movement by exercising in circular arcs at a desired (or alternatively, predetermined) angle in the first direction (X) with respect to the second direction (Y), the semiconductor die  200  performs circular arc exercise, reciprocating left and right at the desired (or alternatively, predetermined) angle in the first direction (X) with respect to the second direction (Y). While  FIG. 2  illustrates that the transfer unit  500  includes a main body  520  including a rotation axis  510  and a rotation axis  510  and the head unit  530  connected to the rotation axis  510 , example embodiments do not limit the structure of the transfer unit  500  to that illustrated herein as long as the head unit  530  enables twisting movement. 
         [0052]    An example structure of the transfer unit  500  that may be used in example embodiments will later be described. 
         [0053]    Next, referring to  FIGS. 3 to 5 , twisting movement is performed by using the transfer unit  500  attached to the second surface  220  of the semiconductor die  200 , thereby picking up the semiconductor die  200  from the supporting wafer  100 . 
         [0054]    In detail, referring to  FIG. 3 , the head unit  530  of the transfer unit  500  performs twisting movement by exercising in circular arcs in the first direction (X) with respect to the third direction (Z), thereby moving the semiconductor die  200  accordingly. 
         [0055]    That is to say, the head unit  530  exercises in circular arcs in the first direction (X) at a desired (or alternatively, predetermined angle) (θ 1 ) with respect to the third direction (Z) perpendicular to the first direction (X), and the semiconductor die  200  attached to the head unit  530  also exercises in circular arcs while reciprocating in the first direction (X). As a result, while the semiconductor die  200  moves in the first direction (X), one side  200   a  of the semiconductor die  200  moves upwardly and the one side  200   a  of the semiconductor die  200  is separated from the supporting wafer  100 . Here, in order to easily detach the semiconductor die  200  from the supporting wafer  100 , the transfer unit  500  performs up-down movement while exercising in circular arcs. 
         [0056]    Referring to  FIG. 4 , in a manner similar to that shown in  FIG. 3 , the head unit  530  of the transfer unit  500  performs twisting movement by exercising in circular arcs in the first direction (X) at a desired (or alternatively, predetermined angle) (θ 2 ) with respect to the third direction (Z). According to the twisting movement, the semiconductor die  200  attached to the head unit  530  of the transfer unit  500  is also shifted from its original position. That is to say, as the head unit  530  exercises in circular arcs, the semiconductor die  200  reciprocates in the first direction (X) at the desired (or alternatively, predetermined) angle (θ 2 ). Accordingly, the other side  200   b  of the semiconductor die  200  moves upwardly and the other side  200   b  of the semiconductor die  200  is separated from the supporting wafer  100 . Like in  FIG. 3 , in order to easily detach the semiconductor die  200  from the supporting wafer  100 , the transfer unit  500  performs up-down movement while exercising in circular arcs. 
         [0057]    Continuously, referring to  FIG. 5 , the semiconductor die  200  having its edge separated from the supporting wafer  100  is picked up by using the transfer unit  500 . As shown in  FIGS. 3 and 4 , since the edge of the semiconductor die  200  has already been separated from the supporting wafer  100  due to twisting movement of the head unit  530 , the semiconductor die  200  can be easily separated and picked up from the supporting wafer  100  without the need of a push-up unit. 
         [0058]    Here, a distance W between each of the plurality of semiconductor dies  200  should have a margin enough to avoid collision with the adjacent semiconductor die  200  when the semiconductor die  200  performs twisting movement. Referring to  FIG. 6 , the distance W between each of the plurality of semiconductor dies  200  should be greater than (L 2 −L 1 )/2 where L 2  denotes a length of a diagonal line of the semiconductor die  200  and L 1  denotes a length of a side in the first direction (X 1 ) of the semiconductor die  200 . Here, the length of a diagonal line of the semiconductor die  200  can be calculated by: 
         [0000]      {( L 1) 2 +( T ) 2 }0.5 
         [0000]    where L 1  denotes a length of a side in the first direction (X 1 ) of the semiconductor die  200  and T denotes a thickness of the semiconductor die  200 . In addition, L 2  denotes a length of a diagonal line on a vertical section of the semiconductor die  200 . 
         [0059]    In the fabricating method of the semiconductor device according to some example embodiments, the semiconductor die  200  can be easily picked up from the supporting wafer  100  by using the transfer unit  500  including the head unit  530  enabling twisting movement. 
         [0060]    Referring to  FIG. 7 , when a transfer unit  10  disables twisting movement, the semiconductor die  200  is not easily detached from the supporting wafer  100 . Thus, after the supporting wafer  100  is first removed from the semiconductor die  200 , a fixing tape  110  is attached to the second surface  220  of the semiconductor die  200  to then pick up from the semiconductor die  200  from the fixing tape  110 . Here, a push-up unit  400 , e.g., a pick-up pin, is used in easily separating the semiconductor die  200  from the fixing tape  110 . However, in the fabricating method of the semiconductor device according to some example embodiments, since the edge of the semiconductor die  200  is first separated from the supporting wafer  100  by using the transfer unit  500  including the head unit  530  enabling twisting movement, the semiconductor die can be easily picked up directly from the supporting wafer  100 . Therefore, the fabricating method of the semiconductor device according to some example embodiments does not require a process of removing a supporting wafer in advance. 
         [0061]    Hereinafter, a fabricating method of a semiconductor device according to some example embodiments will be described with reference to  FIGS. 8 and 9 .  FIG. 8  is a plan view illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments, and  FIG. 9  is a cross-sectional view illustrating a transfer unit of  FIG. 8 . Here, substantially the same components as those of the fabricating method of the semiconductor device according to some example embodiments are denoted by the same reference numerals and detailed descriptions thereof will be omitted. The fabricating method of the semiconductor device according to some example embodiments may be different from the fabricating method of the semiconductor device according to some example embodiments in view of twisting movement corresponding to steps shown in  FIGS. 3 and 4  and the following description will focus on the difference. 
         [0062]    Referring to  FIGS. 8 and 9 , an edge of the semiconductor die  200  is separated from a supporting wafer  100  by the supporting wafer  100  exercising in circular arcs by using a transfer unit  600  including a head unit  530  enabling twisting movement. In detail, the head unit  530  performs twisting movement by exercising in circular arcs in the first direction (X) at a desired (or alternatively, predetermined) angle with respect to the second direction (Y). Due to the twisting movement, the semiconductor die  200  reciprocates while exercising in circular arcs in the first direction (X) at a desired (or alternatively, predetermined) angle with respect to the second direction (Y). That is to say, the semiconductor die  200  reciprocate on a plane parallel with the supporting wafer  100  in the first direction (X) and in the ‘a’ or ‘b’ direction. Accordingly, an edge of the semiconductor die  200  can be separated from the supporting wafer  100 . Referring to  FIG. 9 , the transfer unit  600  performing twisting movement includes a rotation axis  610 , a main body  520 , and a head unit  530 . Since the rotation axis  610  is connected to the head unit  530  from the main body  520 , as the rotation axis  610  exercises in circular arcs, the head unit  530  also exercises in circular arcs. Here, the rotation axis  610  is disposed at a desired (or alternatively, predetermined) angle in the first direction (X) with respect to the second direction (Y) and exercises in circular arcs in the ‘a’ or ‘b’ direction, which will later be described in more detail. 
         [0063]    Hereinafter, a fabricating method of a semiconductor device according to some example embodiments will be described with reference to  FIGS. 10 to 13 .  FIGS. 10 to 13  are cross-sectional views illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments. Here, substantially the same components as those of the fabricating method of the semiconductor device according to some example embodiments are denoted by the same reference numerals and detailed descriptions thereof will be omitted. The fabricating method of the semiconductor device according to some example embodiments may be different from the fabricating method of the semiconductor device according to some example embodiments in that a through-silicon via (TSV) is formed in a semiconductor die and the following description will focus on the difference. 
         [0064]    Referring to  FIG. 10 , a TSV  240  penetrating a first surface  210  and a second surface  220  is formed in each of the semiconductor dies  200 , and a second connection pad  241  contacting the TSV  240  is formed on the second surface  220 . 
         [0065]    In detail, referring to  FIG. 11 , the TSV  240  is formed into a silicon wafer  200   c  from one surface thereof, and a first connection pad  211  and a connection terminal  212  connected to the TSV  240  are formed the one surface. Specifically, a throughhole is formed in the silicon wafer  200   c  by photolithography process, and the throughhole is filled with a conductive material to form the TSV  240 , followed by forming the first connection pad  211  and the connection terminal  212  on the one surface exposing the TSV  240 . Here, the TSV  240  is exposed to one surface of the silicon wafer  200   c , but not exposed to the other surface thereof. 
         [0066]    Next, referring to  FIG. 12 , the supporting wafer  100  is attached to one surface of the silicon wafer  200   c  and the other surface of the silicon wafer  200   c  is polished to expose the TSV  240 . In detail, the supporting wafer  100  is attached to one surface of the silicon wafer  200   c  by using the connection terminal  212  and the adhesive layer  101 , and the other surface of the silicon wafer  200   c  is polished by, for example, chemical mechanical polishing (CMP) until the TSV  240  is exposed. Through the aforementioned process, the through-silicon via (TSV) is formed, the through-silicon via (TSV) penetrating the one and other surfaces of the silicon wafer  200   c.    
         [0067]    Referring to  FIGS. 10 and 13 , the second connection pad  241  contacting the TSV  240  is formed on the other surface of the silicon wafer  200   c , through which the TSV  240  is exposed, and the silicon wafer  200   c  is diced to form a plurality of semiconductor dies  200 . In detail, a passivation layer  242  is formed on the other surface of the silicon wafer  200   c , through which the TSV  240  is exposed, and a contact hole exposing the TSV  240  is formed in the passivation layer  242 , and a second connection pad  241  electrically connected to the TSV  240  is formed on the passivation layer  242  by filling the contact hole with a conductive material. 
         [0068]    As described above, in order to form the through-silicon via (TSV), it is necessary to process the other surface of the silicon wafer. Here, in order to safely treat the silicon wafer that is thinned in the course of processing of the silicon wafer, a supporting wafer is required. 
         [0069]    In the fabricating method of the semiconductor device according to some example embodiments, when the through-silicon via (TSV) is formed by using the supporting wafer in the aforementioned manner, a process of removing the supporting wafer is not required and a semiconductor die can be directly picked up from the supporting wafer, thereby simplifying the fabricating process. 
         [0070]    Hereinafter, a fabricating method of a semiconductor device according to some example embodiments will be described with reference to  FIGS. 14 and 15 .  FIGS. 14 and 15  are cross-sectional views illustrating intermediate structures for explain a fabricating method of a semiconductor device according to some example embodiments. The fabricating method of the semiconductor device according to some example embodiments may be different from the fabricating method of the semiconductor device according to some example embodiments in that picking-up, transferring and bonding of the semiconductor die are performed by using only a transfer unit including a head unit enabling twisting movement. Here, the transfer unit  500  further includes a carrier unit  550 . The following description will focus on the transfer unit  500  further including the carrier unit  550 . 
         [0071]    Referring to  FIG. 14 , a semiconductor die  200  picked up from the supporting wafer  100 , as shown in  FIG. 5 , is transferred to a second semiconductor device  300  by using the transfer unit  500 , and the transferred semiconductor die  200  is bonded to the second semiconductor device  300 . In detail, the transfer unit  500  is attached to a second surface  220  positioned on the semiconductor die  200 , the semiconductor die  200  is picked up from the supporting wafer  100  by using the transfer unit  500 , and the semiconductor die  200  is then transferred to the second semiconductor device  300  while the semiconductor die  200  is maintained at a position at which the second surface  220  faces upwardly. Next, the semiconductor die  200  is bonded to the second semiconductor device  300  by using a connection terminal  212 . Although not shown in detail, a pressing means or a heating means is provided in a head unit  530  of the transfer unit  500 , thereby allowing the transfer unit  500  to be easily attached to the second semiconductor device  300 . In addition, although not shown in detail, in order to facilitate attachment, a connection terminal may be formed one surface of the second semiconductor device  300 . 
         [0072]    Here, the transfer unit  500  further includes a carrier unit  550  enabling linear movement. The carrier unit  550  connected to the transfer unit  500  carries the transfer unit  500 . 
         [0073]    Referring to  FIGS. 7 and 15 , when the supporting wafer  100  is removed and the semiconductor die  200  is picked up from a fixing tape  110 , the transfer unit  10  is attached to the first surface  210  of the semiconductor die  200  on the supporting wafer  100 , the first surface  210  facing the supporting wafer  100 , rather than the second surface  220  exposed to the upper portion of the semiconductor die  200 . Therefore, after the semiconductor die  200  is carried and before it is bonded to the second semiconductor device  300  or before the semiconductor die  200  is carried, it is necessary to transfer again the semiconductor die  200  attached to the transfer unit  10  to a bonding head  20 . That is to say, after the semiconductor die  200  is picked up by the transfer unit  10  and is again transferred to the bonding head  20  to then be bonded to the second semiconductor device  300  by the bonding head  20 . However, in the fabricating method of the semiconductor device according to some example embodiments, the semiconductor die  200  is directly picked up and transferred from the supporting wafer  100  by using the transfer unit  500 , it is directly bonded by the transfer unit  500  without having to move the same to the bonding head  20 . That is to say, while the semiconductor die  200  is picked up, transferred and bonded, the direction of the semiconductor die  200  is maintained without being changed and the picking up, transferring and bonding operations are all performed by using only the transfer unit  500 , thereby simplifying the fabricating process. 
         [0074]    The semiconductor die  200  according to some example embodiments may be a semiconductor chip, and a multichip package having a plurality semiconductor chips stacked may be formed using the above-described methods according to some example embodiments. Here, each of the semiconductor chips, including a through-silicon via (TSV), may achieve chip-level stacking. In addition, the fabricating methods of semiconductor devices according to example embodiments are not limited to picking up a semiconductor die, but may also be applied to picking up a semiconductor device of a semiconductor package. For example, a package on package having a plurality of semiconductor packages can be fabricated by picking up, carrying and bonding the semiconductor packages using the above-described methods according to some example embodiments. 
         [0075]    Hereinafter, a pick-up apparatus of a semiconductor device, which can be applied as a transfer unit in the fabricating methods of semiconductor devices according to some example embodiments will be described with reference to  FIGS. 14 and 16  to  18 . 
         [0076]    First, a pick-up apparatus of a semiconductor device according to some example embodiments will be described with reference to  FIGS. 14 and 16 .  FIG. 16  is a perspective view illustrating a pick-up apparatus of a semiconductor device according to some example embodiments. 
         [0077]    Referring to  FIGS. 14 and 16 , the transfer unit  500  of a semiconductor device according to some example embodiments includes a rotation axis  510 , a main body  520 , and a head unit  530 . The transfer unit  500  may further include a connection unit  540 , a carrier unit  550 , an up-down driving unit  560  and a rotation driving unit  570 . 
         [0078]    The rotation axis  510  enables rotation movement and also exercises in circular arcs by rotating at a desired (or alternatively, predetermined) angle. That is to say, rotation movement is performed at a desired (or alternatively, predetermined) angle only in a direction perpendicular to the rotation axis  510 , thereby enabling circular arc exercise. The rotation axis  510  extends in the second direction (Y), and the main body  520  includes the rotation axis  510 . 
         [0079]    The rotation axis  510  is connected to the rotation driving unit  570 . Specifically, the rotation driving unit  570  may be a step motor, but example embodiments are not limited thereto. While  FIG. 16  shows that the rotation driving unit  570  is disposed outside the main body  520 , the rotation driving unit  570  may be incorporated into the main body  520 . 
         [0080]    The main body  520  includes the rotation axis  510  and is connected to the carrier unit  550 , as shown in  FIG. 14 . An opening  521  is formed on a bottom surface of the main body  520  to allow the connection unit  540  vertically extending from the rotation axis  510  to protrude from the main body  520  to then move. In addition, the up-down driving unit  560  is connected to the main body  520  to adjust up-down movement of the main body  520 . Here, as the main body  520  moves up and down, the rotation axis  510  incorporated into the main body  520  and the head unit  530  connected thereto also move up and down accordingly. The up-down driving unit  560  may be an actuator, but example embodiments are not limited thereto. 
         [0081]    The head unit  530  is connected to the rotation axis  510  by the connection unit  540  and is directly attached to a semiconductor device to pick up the semiconductor device. The head unit  530  is coupled to an end of the connection unit  540  vertically extending from the rotation axis  510 . The rotation axis  510 , the connection unit  540  and the head unit  530  may be integrally formed with each other. Since the head unit  530  is connected to the rotation axis  510 , it moves in the direction in which the rotation axis  510  moves. Although not shown in detail, the head unit  530  may include a vacuum absorbing means to be attached to the semiconductor device, a pressing means or a heating means used to bond the semiconductor device. 
         [0082]    Referring to  FIG. 14 , the carrier unit  550  is connected to the main body  520  and enables linear movement to move the transfer unit  500 . As the transfer unit  500  moves, the semiconductor device attached to the head unit  530  of the transfer unit  500  also moves.  FIG. 14  shows that the carrier unit  550  is of a cylinder type, but example embodiments are not limited thereto. The transfer unit  500  according to some example embodiments performs not only a picking-up operation but also a carrying operation by using the carrier unit  550 . 
         [0083]    Hereinafter, a transfer unit of a semiconductor device according to some example embodiments will be described with reference to  FIG. 17 .  FIG. 17  is a perspective view illustrating a transfer unit of a semiconductor device according to some example embodiments. Here, substantially the same components as those of the semiconductor device according to some example embodiments are denoted by the same reference numerals and detailed descriptions thereof will be omitted. The semiconductor device according to some example embodiments is different from the semiconductor device according to some example embodiments in that the pick-up apparatus according to some example embodiments includes two rotation axes and the following description will focus on the difference. 
         [0084]    Referring to  FIG. 17 , the transfer unit  500  according to some example embodiments includes a rotation axis  510 , a main body  520  and a head unit  530 . The rotation axis  510  includes a first rotation axis  511  and a second rotation axis  512 . In addition, the connection unit  540  includes a first connection unit  541 , a second connection unit  542 , and a hinge unit  543 . 
         [0085]    The rotation axis  510  includes a first rotation axis  511  and a second rotation axis  512  extending in a second direction (Y), and the first rotation axis  511  and the second rotation axis  512  are spaced a desired (or alternatively, predetermined) distance apart from each other. In detail, the first rotation axis  511  and the second rotation axis  512  are positioned to be close to different sides of main body  520 . Although not shown, each of the first rotation axis  511  and the second rotation axis  512  are connected to a rotation driving unit and performs rotation movement or exercises in circular arcs by rotating only at a desired (or alternatively, predetermined) angle with respect to a direction perpendicular to the rotation axis  510 . 
         [0086]    The connection unit  540  includes a first connection unit  541  vertically extending from the first rotation axis  511 , and a second connection unit  542  vertically extending from the second rotation axis  512 . The first connection unit  541  and the second connection unit  542  connect the rotation axis  510  to the head unit  530 , and are connected to the head unit  530  by the hinge unit  543  to allow the head unit  530  to move according to movement of the rotation axis  510 . In order to allow the connection unit  540  to move smoothly, a groove into which the connection unit  540  is inserted may be formed on a top surface of the head unit  530 . The shape of the hinge unit  543  is not limited to that shown in  FIG. 17 . Example embodiments do not limit the shape of the hinge unit  543  as long as the head unit  530  can move according to rotation of the rotation axis  510 . 
         [0087]    Hereinafter, a pick-up apparatus of a semiconductor device according to some example embodiments will be described with reference to  FIG. 18 .  FIG. 18  is a perspective view illustrating a pick-up apparatus of a semiconductor device according to some example embodiments. Here, substantially the same components as those of the pick-up apparatus according to some example embodiments are denoted by the same reference numerals and detailed descriptions thereof will be omitted. The pick-up apparatus according to some example embodiments is different from the pick-up apparatus according to some example embodiments in that a rotation axis extends in a third direction (Z) and the following description will focus on the difference. 
         [0088]    Referring to  FIG. 18 , the transfer unit  600  of a semiconductor device according to some example embodiments includes a rotation axis  610 , a main body  520  and a head unit  530 . 
         [0089]    The rotation axis  610  extends in the third direction (Z) and is connected to the head unit  530 . Although not shown in detail, the rotation axis  610  is connected to a rotation driving unit and performs rotation movement or exercises in circular arcs by rotating only at a desired (or alternatively, predetermined) angle with respect to a direction perpendicular to the rotation axis  610 . The rotation axis  610  is connected to the head unit  530  while penetrating the main body  520 . 
         [0090]    The head unit  530  is coupled to an end of the rotation axis  610  and moves in a direction in which the rotation axis  610  moves. In detail, when the rotation axis  610  exercises in circular arcs at a desired (or alternatively, predetermined) angle with respect to a direction perpendicular to the rotation axis  610 , the head unit  530  also exercises in circular arcs. 
         [0091]    In the transfer units  500  and  600  of semiconductor devices according to some example embodiments, the head unit  530  is connected to the rotation axes  510  and  610 , respectively, thereby enabling circular arc exercise. The circular arc exercise become twisting movement. The twisting movement of the head unit  530  is performed to facilitate separation of the semiconductor device attached to the head unit  530  from an object to which the semiconductor device is attached. That is to say, the semiconductor device is detached and attached from the edge based on twisting movement of the head unit  530 , thereby facilitating a picking-up operation of the semiconductor device. In addition, the pick-up apparatus includes a carrier unit. In addition, picking-up, carrying and bonding operations of the semiconductor device can be continuously performed using only the pick-up apparatuses according to some example embodiments. 
         [0092]    While example embodiments have been particularly shown and described, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.