Patent Publication Number: US-2016225613-A1

Title: Substrate treatment device, peeling method for laminated substrate, and method for removing adhesive

Description:
TECHNICAL FIELD 
     Embodiments of the invention relates to a substrate treatment device, a peering method for laminated, and a method for removing adhesive. 
     BACKGROUND ART 
     A multi-chip package (MCP) has been put to use in recent years. In the multi-chip package, a plurality of semiconductor elements (semiconductor chips) are stacked in one package using e.g. bonding wires and through-silicon vias (TSV). 
     The semiconductor element used in such a multi-chip package typically has a thinner thickness dimension than the ordinary semiconductor element. 
     Furthermore, the thickness dimension of the semiconductor element tends to be thinner also from the viewpoint of e.g. increase in the degree of integration of semiconductor devices. 
     Manufacturing of such a semiconductor element having a thin thickness dimension requires e.g. thinning the thickness dimension of the substrate before dicing. However, thinning the thickness dimension of the substrate decreases the mechanical strength. Thus, the substrate may break when processing the substrate to a thin thickness dimension. 
     Thus, the strength necessary for e.g. processing the substrate to a thin thickness dimension is provided as follows. A substrate with a pattern formed thereon (hereinafter referred to as device substrate) is bonded to a support substrate to form a laminated substrate. After processing for the thickness dimension, the device substrate is peeled from the support substrate (see, e.g., Patent Literature 1). 
     However, the device substrate is difficult to peel from the support substrate. 
     Furthermore, simply peeling the device substrate from the support substrate may leave part of the adhesive on the support substrate and the device substrate. 
     In this case, part of the adhesive left on the support substrate makes it difficult to directly reuse the support substrate. 
     Part of the adhesive left on the device substrate may make it difficult to perform the subsequent steps (such as dicing). 
     CITATION LIST 
     Patent Literature 
     
         
         [Patent Literature 1] JP-A-2010-531385 
       
    
     SUMMARY OF INVENTION 
     Technical Problem 
     The problem to be solved by the invention is to provide a substrate treatment device, a peeling method for a laminated substrate, and a method for removing an adhesive capable of facilitating peeling the adhesive. 
     Technical Solution 
     The embodiment of a substrate treatment device includes a treatment bath configured to store a treatment liquid in which a treatment object is to be immersed, a transport section configured to transport the treatment object, a temperature control section provided in at least one of the treatment bath and a position spaced from the treatment bath and configured to perform at least one of heating and cooling of the treatment object. 
     the treatment object is at least one of: 
     a laminated substrate including a device substrate, a support substrate, and an adhesive provided between the device substrate and the support substrate, 
     the device substrate with the adhesive attached thereto, and 
     the support substrate with the adhesive attached thereto. 
     Effect of the invention 
     The substrate treatment device, the peeling method for the laminated substrate, and the method for removing the adhesive capable of facilitating peeling the adhesive is provided by the embodiment of the invention. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic view for illustrating a substrate treatment device  1  according to a first embodiment. 
         FIGS. 2A to 2C  are schematic views for illustrating the function of the substrate treatment device  1  and the peeling method for the laminated substrate  100 . 
         FIGS. 3A to 3D  are schematic views for illustrating the function of the substrate treatment device  1  and the method for removing the adhesive  102 . 
         FIG. 4A  is a schematic view for illustrating the state in which the laminated substrate  100  is held by a holding hook  202 . 
         FIG. 4B  is a schematic view for illustrating the state in which the holding hook  202  is disengaged. 
         FIG. 5  is a schematic view for illustrating a substrate treatment device  1   a  according to a second embodiment. 
         FIG. 6  is a schematic sectional view for illustrating the treatment liquid  110  provided with regions having different temperatures. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Various embodiments will be described hereinafter with reference to the accompanying drawings. In the respective drawings, the same components are labeled with like reference numerals, and detailed description thereof is omitted as appropriate. 
     First Embodiment 
       FIG. 1  is a schematic view for illustrating a substrate treatment device  1  according to a first embodiment. 
     The substrate treatment device  1  can perform peeling of a laminated substrate  100  and removal of an adhesive  102  from the substrate  100  with the adhesive  102  attached thereto (see, e.g.,  FIGS. 2A to 3D ). 
     In this case, for instance, as shown in  FIGS. 2A and 3A , the laminated substrate  100  includes a device substrate  101  with a pattern formed thereon, a support substrate  103 , and an adhesive  102 . The adhesive  102  is provided between the device substrate  101  and the support substrate  103 , and bonds the device substrate  101  to the support substrate  103 . 
     The following example illustrates the case of treating the laminated substrate  100 . However, this is also applicable to the case of treating a substrate  100   a  with an adhesive  102  attached thereto. 
     As shown in  FIG. 1 , the substrate treatment device  1  includes a container  2 , a housing section  3 , a temperature control section  4 , a treatment section  5 , a supply section  6 , a recovery section  7 , a transport section  8 , a transport section  9 , and a control section  10 . 
     The container  2  can be shaped like a box having an air-tight structure. The air-tight structure only needs to be able to prevent e.g. intrusion of external particles. Furthermore, a pressurization device, not shown, can also be provided to make the internal pressure of the container  2  slightly higher than the external pressure. Providing the pressurization device, not shown, to make the internal pressure of the container  2  slightly higher than the external pressure facilitates suppressing intrusion of external particles. 
     The housing section  3  is detachably attached from outside to the opening provided in the sidewall of the container  2 . The end part on the container  2  side of the housing section  3  is configured to be openable, and to enable passing of a laminated substrate  100  through the opening. The housing section  3  includes holders, not shown, for holding laminated substrates  100  in a stacked (multistage) configuration. That is, the housing section  3  can house a plurality of laminated substrates  100  in a stacked (multistage) configuration. 
     The housing section  3  can be e.g. a FOUP (front-opening unified pod). The FOUP is a front-opening carrier used in mini-environment semiconductor plants and intended for transport and storage of substrates. 
     The laminated substrate  100  housed in the housing section  3  is a laminated substrate  100  before treatment and a laminated substrate  100  after treatment. 
     The number of housing sections  3  is not limited to one, but two or more housing sections  3  may be provided. 
     In the case illustrated in  FIG. 1 , the temperature control section  4  is provided on the inner bottom surface of the container  2 . The upper surface of the temperature control section  4  is a mounting surface for mounting the laminated substrate  100 . The temperature control section  4  includes therein a heating device or cooling device, not shown. Thus, the temperature control section  4  can change the temperature of the laminated substrate  100  mounted on the upper surface of the temperature control section  4 . That is, the temperature control section  4  performs at least one of heating and cooling of the laminated substrate  100  (substrate  100   a ). 
     The heating device or cooling device, not shown, provided in the temperature control section  4  is not particularly limited. The heating device, not shown, can be appropriately selected from various types such as using Joule heat, circulating a heat medium, and using radiation heat. The cooling device, not shown, can be appropriately selected from various types such as using the Peltier effect and circulating a heat medium. 
     The temperature control section  4  is controlled by the control section  10  and can adjust the temperature of the laminated substrate  100 . 
     The temperature control section  4  may control the temperature so that the in-plane temperature distribution of the laminated substrate  100  is made uniform. Alternatively, the temperature control section  4  may control the temperature so that the in-plane temperature distribution of the laminated substrate  100  is made nonuniform. 
     The in-plane temperature distribution of the laminated substrate  100  may be made nonuniform. That is, a plurality of regions having different temperatures may be formed in the surface of the laminated substrate  100 . In this case, for instance, the surface of the laminated substrate  100  is divided into a plurality of regions. Then, the temperature can be adjusted in each of the plurality of regions. 
     The following example illustrates the case in which the laminated substrate  100  is heated by the temperature control section  4 . 
     The treatment section  5  includes a treatment bath  5   a,  a supply valve  5   b,  a supply valve  5   c,  and a piping  5   d.    
     The treatment bath  5   a  is shaped like a box and provided on the inner bottom surface of the container  2 . The treatment bath  5   a  has a liquid-tight structure. The treatment bath  5   a  stores therein a treatment liquid  110 . The upper end of the treatment bath  5   a  is opened. Thus, the treatment bath  5   a  is configured so that the laminated substrate  100  can be immersed in the treatment liquid  110  stored inside the treatment bath  5   a.  The treatment liquid  110  is brought into contact with the adhesive  102 . Thus, the treatment liquid  110  has the function of weakening the adhesion strength by e.g. dissolving (decomposing) or softening the adhesive  102 . 
     The treatment liquid  110  can be e.g. pure water (DIW, deionized water), ozone water, supersaturated gas solution, APM (ammonia/hydrogen peroxide mixture), or SPM (sulfuric acid/hydrogen peroxide mixture). In the case where the treatment liquid  110  is not pure water, the concentration of the treatment liquid  110  can be set to a concentration not affecting the product quality of the device substrate  101 . 
     The treatment liquid  110  can be appropriately selected depending on the component of the adhesive  102 . 
     For instance, the adhesive  102  includes an organic material. Then, it is preferable to select a treatment liquid  110  having a decomposition function for the organic material. 
     Then, peeling of the laminated substrate  100  or removal of the adhesive  102  can be performed more effectively. 
     The treatment liquid  110  having a decomposition function for the organic material is e.g. ozone water, APM, or SPM. 
     In the case where the adhesive  102  is made of an inorganic material, any of the illustrated treatment liquids  110  may be used. 
     Use of a supersaturated gas solution can produce a gas in the peeled portion or crack described later. 
     The gas dissolved in the supersaturated gas solution is not particularly limited. The gas dissolved in the supersaturated gas solution can be e.g. air, nitrogen gas, oxygen gas, or ozone gas. 
     In the treatment bath  5   a  under the atmospheric pressure, the gas dissolved in the supersaturated gas solution produces bubbles. When the bubble bursts, the bubble produces a physical force. By using this physical force, peeling of the laminated substrate  100  or removal of the adhesive  102  can be performed more effectively. 
     The treatment liquid  110  can be a solution having a larger specific weight than the adhesive  102 . Then, the film-like adhesive  102  peeled from the laminated substrate  110 , described later, is likely to float on the surface of the treatment liquid  110 . Thus, the peeled film-like adhesive  102  can be easily removed. 
     The details on peeling of the laminated substrate  100  and removal of the adhesive  102  will be described later. 
     The supply valve  5   b  is provided on the sidewall of the treatment bath  5   a.  The treatment liquid  110  is supplied into the treatment bath  5   a  through the supply valve  5   b.    
     The supply valve  5   b  controls supply and stoppage of the treatment liquid  110 . Furthermore, the supply valve  5   b  can be configured to control the flow rate of the treatment liquid  110 , besides supply and stoppage of the treatment liquid  110 . 
     The supply valve  5   b  can always maintain a constant amount of the treatment liquid  110  stored inside the treatment bath  5   a  based on the signal from the liquid-level meter, not shown, provided on the treatment bath  5   a.    
     The supply valve  5   c  is provided on the bottom surface side of the sidewall of the treatment bath  5   a.  The supply valve  5   c  is connected to a tank  7   a  through the piping  5   d.    
     The supply valve  5   c  controls supply and stoppage of the treatment liquid  110 . Furthermore, the supply valve  5   c  can be configured to control the flow rate of the treatment liquid  110 , besides supply and stoppage of the treatment liquid  110 . 
     For instance, in the case of e.g. exchanging the treatment liquid  110  stored in the treatment bath  5   a  and performing maintenance of the treatment section  5 , the treatment liquid  110  stored inside the treatment bath  5   a  is drained into the tank  7   a  through the supply valve  5   c.    
     The supply section  6  includes a tank  6   a,  a supply valve  6   b,  a supply valve  6   c,  a liquid feeder  6   d,  a drain valve  6   e,  and a piping  6   f.    
     The tank  6   a  stores the treatment liquid  110  before being used for treatment. 
     The supply valve  6   b  is provided on the sidewall of the tank  6   a.  The treatment liquid  110  is supplied into the tank  6   a  through the supply valve  6   b.    
     The supply valve  6   b  controls supply and stoppage of the treatment liquid  110 . Furthermore, the supply valve  6   b  can be configured to control the flow rate of the treatment liquid  110 , besides supply and stoppage of the treatment liquid  110 . 
     The supply valve  6   b  can always maintain a constant amount of the treatment liquid  110  stored in the tank  6   a  based on the signal from the liquid-level meter, not shown, provided on the tank  6   a.    
     The supply valve  6   c  is provided on the bottom surface side of the sidewall of the tank  6   a.  The treatment liquid  110  is supplied to the outside of the tank  6   a  through the supply valve  6   c.    
     The supply valve  6   c  controls supply and stoppage of the treatment liquid  110 . Furthermore, the supply valve  6   c  can be configured to control the flow rate of the treatment liquid  110 , besides supply and stoppage of the treatment liquid  110 . 
     One end of the liquid feeder  6   d  is connected to the supply valve  6   c.  The other end of the liquid feeder  6   d  is connected to the supply valve  5   b  through the piping  6   f.  The liquid feeder  6   d  feeds the treatment liquid  110  stored inside the tank  6   a  into the treatment bath  5   a.  The liquid feeder  6   d  can be e.g. a pump resistant to the treatment liquid  110 . 
     The drain valve  6   e  is provided on the bottom surface side of the sidewall of the tank  6   a.  The drain valve  6   e  can be connected to e.g. the drain piping of the plant or the tank  7   a.  For instance, when performing maintenance of the supply section  6 , the treatment liquid  110  stored inside the tank  6   a  is drained outside through the drain valve  6   e.    
     The recovery section  7  includes a tank  7   a  and a drain valve  7   b.    
     The tank  7   a  stores the treatment liquid  110  drained from the treatment bath  5   a.  That is, the tank  7   a  stores the treatment liquid  110  after being used for treatment. 
     The drain valve  7   b  is provided on the bottom surface side of the sidewall of the tank  7   a.  The drain valve  7   b  can be connected to e.g. the drain piping of the plant. 
     The transport section  8  is provided on the inner bottom surface of the container  2 . The transport section  8  is located between the housing section  3  and the temperature control section  4 . 
     The transport section  8  includes a holder  8   a  and a mover  8   b.    
     The holder  8   a  includes an arm  8   a   1  having a joint. The holder  8   a  can hold a laminated substrate  100  at the tip of the arm  8   a   1 . 
     The mover  8   b  performs e.g. expansion and contraction of the arm  8   a   1  of the holder  8   a,  and rotation of the holder  8   a.    
     For instance, the mover  8   b  expands and contracts the arm  8   a   1  by bending the arm  8   a   1 . Thus, the mover  8   b  passes a laminated substrate  100  from the temperature control section  4  to the housing section  3 , or passes a laminated substrate  100  from the housing section  3  to the temperature control section  4 . The mover  8   b  rotates the holder  8   a  in the state of holding the laminated substrate  100  at the tip of the arm  8   a   1  and directs the tip of the arm  8   a   1  to the housing section  3  or the temperature control section  4 . 
     The transport section  9  is provided on the inner bottom surface of the container  2 . The transport section  9  is located between the temperature control section  4  and the treatment bath  5   a.    
     The transport section  9  includes a holder  9   a  and a mover  9   b.    
     The holder  9   a  includes an arm  9   a   1  having a joint. The holder  9   a  can hold a laminated substrate  100  at the tip of the arm  9   a   1 . 
     The mover  9   b  performs e.g. expansion and contraction of the arm  9   a   1  of the holder  9   a,  and rotation of the holder  9   a.    
     For instance, the mover  9   b  expands and contracts the arm  9   a   1  by bending the arm  9   a   1 . Thus, the mover  9   b  passes a laminated substrate  100  from the temperature control section  4  to the treatment bath  5   a,  or passes a laminated substrate  100  from the treatment bath  5   a  to the temperature control section  4 . The mover  9   b  rotates the holder  9   a  in the state of holding the laminated substrate  100  at the tip of the arm  9   a   1  and directs the tip of the arm  9   a   1  to the temperature control section  4  or the treatment bath  5   a.  Then, for instance, the mover  9   b  expands and contracts the arm  9   a   1  by bending the arm  9   a   1 . Thus, the mover  9   b  immerses the laminated substrate  100  in the treatment liquid  110  inside the treatment bath  5   a,  or extracts the laminated substrate  100  immersed in the treatment liquid  110  inside the treatment bath  5   a.    
     The control section  10  controls the operation of each component provided in the substrate treatment device  1 . 
     For instance, the control section  10  controls the transport section  8  to transport and pass the laminated substrate  100  between the housing section  3  and the temperature control section  4 . The control section  10  controls the temperature control section  4  so that the temperature of the laminated substrate  100  falls within a prescribed range. The control section  10  controls the transport section  9  to transport and pass the laminated substrate  100  between the temperature control section  4  and the treatment bath  5   a.  The control section  10  controls the supply valve  5   b,  the supply valve  6   c,  and the liquid feeder  6   d  to supply the treatment liquid  110  from the tank  6   a  to the treatment bath  5   a.    
     Next, a peeling method for the laminated substrate  100  and a method for removing the adhesive  102  according to this embodiment are illustrated in conjunction with the function of the substrate treatment device  1 . 
       FIGS. 2A to 2C  are schematic views for illustrating the function of the substrate treatment device  1  and the peeling method for the laminated substrate  100 . 
       FIGS. 3A to 3D  are schematic views for illustrating the function of the substrate treatment device  1  and the method for removing the adhesive  102 . That is,  FIGS. 3A to 3D  show the case of removing the adhesive  102  from the substrate  100   a  with the adhesive  102  attached thereto. 
     As shown in  FIGS. 2A and 3A , the laminated substrate  100  includes a device substrate  101  with a pattern formed thereon, a support substrate  103 , and an adhesive  102 . The adhesive  102  is provided between the device substrate  101  and the support substrate  103 , and bonds the device substrate  101  to the support substrate  103 . 
       FIG. 3B  shows the case of performing peeling of the laminated substrate  100  without using the substrate treatment device  1 . For instance, the laminated substrate  100  is heated to soften the adhesive  102 . In this state, the device substrate  101  is peeled from the support substrate  103 . When peeling of the laminated substrate  100  is performed without using the substrate treatment device  1 , part of the adhesive  102  may be left on at least one substrate as shown in  FIG. 3B .  FIG. 3B  illustrates the case where part of the adhesive  102  is left on the support substrate  103 . However, part of the adhesive  102  may be left on the device substrate  101 . 
     The following example illustrates the case of treating the laminated substrate  100  or the support substrate  103  (substrate  100   a ) with the adhesive  102  attached thereto. However, this is also applicable to the case of treating the device substrate  101  with the adhesive  102  attached thereto. 
     First, as shown in  FIGS. 2B and 3C , by the transport section  8 , the laminated substrate  100  (substrate  100   a ) before treatment is extracted from the housing section  3  and mounted on the temperature control section  4 . 
     Next, by the temperature control section  4 , the laminated substrate  100  (substrate  100   a ) is heated so that the temperature of the laminated substrate  100  (substrate  100   a ) falls within a prescribed range. 
     The heating temperature of the laminated substrate  100  (substrate  100   a ) is not particularly limited. 
     However, in this embodiment, the heating temperature of the laminated substrate  100  (substrate  100   a ) is set to a temperature higher than the temperature of the treatment liquid  110  inside the treatment bath  5   a.  In this case, the heating temperature of the laminated substrate  100  (substrate  100   a ) only needs to fall within the range capable of producing e.g. a peeling or crack described later. 
     The heating temperature of the laminated substrate  100  (substrate  100   a ) can be appropriately determined by e.g. experiment or simulation. 
     The heating only needs to be performed so that a peeling or crack due to difference in linear expansion coefficient described later is produced at at least one of the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102 . Thus, the heating does not need to be performed uniformly. 
     In this case, heating may be performed so that the central region and the outer peripheral region of the laminated substrate  100  (substrate  100   a ) are different in temperature. In the case where the temperature of the outer peripheral region is made higher than the temperature of the central region, peeling due to difference in linear expansion coefficient between the substrate  101 ,  103  and the adhesive can be made larger in the outer peripheral region. This can facilitate intrusion of the peeling liquid from the outer peripheral region. On the other hand, in the case where the temperature of the central region is made higher than the temperature of the outer peripheral region, peeling can be made larger in the central region less prone to intrusion of the peeling liquid. This can facilitate intrusion of the peeling liquid into the central region. 
     Furthermore, heating may be performed so that the temperature changes (an uneven temperature distribution occurs) in the horizontal direction (in-plane direction) of the laminated substrate  100  (substrate  100   a ). 
     Next, as shown in  FIGS. 2C and 3D , by the transport section  9 , the laminated substrate  100  (substrate  100   a ) is extracted from the temperature control section  4 . Then, the laminated substrate  100  (substrate  100   a ) is immersed in the treatment liquid  110  inside the treatment bath  5   a.    
     The heated laminated substrate  100  (substrate  100   a ) is immersed in the treatment liquid  110 . Thus, the laminated substrate  100  (substrate  100   a ) is quenched. 
     Here, the linear expansion coefficient of the device substrate  101  is different from the linear expansion coefficient of the adhesive  102 . The linear expansion coefficient of the support substrate  103  is different from the linear expansion coefficient of the adhesive  102 . 
     This produces a thermal stress based on the difference in linear expansion coefficient. Thus, a peeling or crack occurs at at least one of the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102 . 
     Then, the treatment liquid  110  intrudes from e.g. the peeled portion or crack. Thus, peeling of the laminated substrate  100  or removal of the adhesive  102  is performed. 
     That is, due to formation of e.g. the peeled portion or crack, the treatment liquid  110  is more likely to intrude into the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102 . This can facilitate peeling of the laminated substrate  100  or removal of the adhesive  102 , i.e., peeling of the adhesive  102 . 
     Next, by the transport section  9 , the device substrate  101  and the support substrate  103  separated from the laminated substrate  100  (or the substrate  100   a ) are extracted from inside the treatment bath  5   a.    
     When the laminated substrate  100  (substrate  100   a ) is immersed in the treatment liquid  110  inside the treatment bath  5   a,  for instance, the laminated substrate  100  (substrate  100   a ) can be housed in a container, not shown, having a meshed inner wall. 
     The extraction from inside the treatment bath  5   a  can be performed as follows, for instance. 
     The extraction from inside the treatment bath  5   a  can be performed after the lapse of an immersion time previously determined by experiment or simulation. 
     The separated device substrate  101  and support substrate  103  are pulled up from the treatment liquid  110  together with the container, not shown. 
     By the transport section  9 , the separated device substrate  101  and support substrate  103  are each extracted from the container, not shown. 
     The extracted device substrate  101  and support substrate  103  are sequentially passed to the temperature control section  4  by the transport section  9 . 
     In this case, the device substrate  101  or the support substrate  103  does not need to be heated by the temperature control section  4 . 
     If the laminated substrate  100  is not separated or the adhesive  102  is insufficiently removed, then heating is performed again by the temperature control section  4 , and the aforementioned procedure is repeated. Thus, peeling of the laminated substrate  100  or removal of the adhesive  102  can be performed continuously. 
     Next, by the transport section  8 , the device substrate  101  or the support substrate  103  is extracted from the temperature control section  4 . After drying by a drying means, not shown, the device substrate  101  or the support substrate  103  is housed in the housing section  3 . 
     In this case, drying by the drying means, not shown, can be performed before passing to the temperature control section  4 . After drying, the device substrate  101  or the support substrate  103  may be directly housed in the housing section  3  without being passed to the temperature control section  4 . 
     Alternatively, the device substrate  101  or the support substrate  103  may be extracted from inside the treatment bath  5   a  by the transport section  9 , and the extracted substrate may be passed from the transport section  9  to the transport section  8 . Then, the device substrate  101  or the support substrate  103  may be housed in the housing section  3  by the transport section  8 . 
     Alternatively, the device substrate  101  or the support substrate  103  may be extracted from inside the treatment bath  5   a  by the transport section  9 , and the device substrate  101  or the support substrate  103  may be directly housed in the housing section  3 . 
     In the above embodiment, when the laminated substrate  100  (substrate  100   a ) is immersed in the treatment liquid  110  inside the treatment bath  5   a,  the laminated substrate  100  (substrate  100   a ) is housed in a container, not shown, having a meshed inner wall. However, the laminated substrate  100  (substrate  100   a ) can be held by a holding member. This holding member holding the laminated substrate  100  (substrate  100   a ) can be immersed in the treatment liquid  110  inside the treatment bath  5   a.    
       FIG. 4A  is a schematic view for illustrating the state in which the laminated substrate  100  is held by a holding hook  202 . 
       FIG. 4B  is a schematic view for illustrating the state in which the holding hook  202  is disengaged. 
     As shown in  FIGS. 4A and 4B , the holding member  200  includes a base part  201  for mounting the laminated substrate  100 , and a holding hook  202  driven so as to pivot with respect to the base part  201 . This holding member  200  receives the laminated substrate  100  (substrate  100   a ) from the transport section  9 . Then, the holding hook  202  is closed. In the state of holding the laminated substrate  100  (substrate  100   a ), the holding member  200  descends in the treatment bath  5   a  and immerses the laminated substrate  100  (substrate  100   a ) in the treatment liquid  110  inside the treatment bath  5   a.  After the lapse of a prescribed immersion time, the holding member  200  moves to the ascent end and disengages the holding hook  202 . Then, the transport section  9  extracts each of the separated device substrate  101  and support substrate  103  from the holding member  200 . The subsequent procedure is similar to that of the aforementioned embodiment. 
     Second Embodiment 
       FIG. 5  is a schematic view for illustrating a substrate treatment device  1   a  according to a second embodiment. 
     In the substrate treatment device  1  described above, the previously produced treatment liquid  110  is stored in the tank  6   a  of the supply section  6 . The treatment liquid  110  stored in the tank  6   a  is supplied to the treatment bath  5   a.    
     In contrast, in the substrate treatment device la according to the second embodiment, the treatment liquid  110  is produced inside the tank  6   a  of the supply section  16 . The produced treatment liquid  110  is supplied to the treatment bath  5   a.    
     As shown in  FIG. 5 , the substrate treatment device la includes a container  2 , a housing section  3 , a temperature control section  4 , a treatment section  5 , a supply section  16 , a recovery section  7 , a transport section  8 , a transport section  9 , and a control section  10 . 
     The supply section  16  includes a tank  6   a,  a supply valve  6   c,  a drain valve  6   e,  a piping  6   f,  a gas supply section  16   a,  a supply valve  16   b,  a liquid supply section  16   c,  a supply valve  16   d,  and a liquid feeder  16   e.    
     The gas supply section  16   a  supplies a gas used to produce the treatment liquid  110 . 
     For instance, in the case where the treatment liquid  110  is ozone water, the gas supply section  16   a  supplies ozone gas. 
     In the case where the treatment liquid  110  is a supersaturated gas solution, the kind of the supplied gas is not particularly limited. In the case where the treatment liquid  110  is a supersaturated gas solution, the gas supply section  16   a  supplies e.g. air, nitrogen gas, oxygen gas, or ozone gas. 
     The gas supply section  16   a  can be e.g. a cylinder storing a high-pressure gas. 
     The gas is supplied from the gas supply section  16   a  to the tank  6   a.  Thus, the treatment liquid  110  is pumped from the tank  6   a  into the treatment bath  5   a.    
     The supply valve  16   b  is provided on the sidewall of the tank  6   a.  The gas supplied from the gas supply section  16   a  is introduced into the tank  6   a  through the supply valve  16   b.    
     The supply valve  16   b  controls supply and stoppage of the gas. Furthermore, the supply valve  16   b  can be configured to control the pressure of the gas, besides supply and stoppage of the gas. 
     For instance, in the case of producing a supersaturated gas solution, the pressure of the gas introduced into the tank  6   a  is set by the supply valve  16   b  to such a high pressure that the gas having a concentration higher than the solubility is dissolved. 
     The liquid supply section  16   c  supplies a liquid used to produce the treatment liquid  110 . 
     For instance, the liquid supply section  16   c  supplies pure water. 
     The liquid supply section  16   c  can be e.g. a tank storing a liquid. 
     The supply valve  16   d  is provided between the liquid supply section  16   c  and the liquid feeder  16   e.    
     The supply valve  16   d  controls supply and stoppage of the liquid. Furthermore, the supply valve  16   d  can be configured to control the flow rate of the liquid, besides supply and stoppage of the liquid. 
     The supply valve  16   d  can always maintain a constant amount of the liquid (treatment liquid  110 ) stored in the tank  6   a  based on the signal from the liquid-level meter, not shown, provided on the tank  6   a.    
     The liquid feeder  16   e  is provided on the sidewall of the tank  6   a.  The liquid feeder  16   e  feeds the liquid from the liquid supply section  16   c  into the tank  6   a.    
     The liquid feeder  16   e  can be e.g. a pump resistant to the liquid supplied from the liquid supply section  16   c.    
     The foregoing has described the case where one kind of gas and one kind of liquid are supplied. However, two or more kinds of gas and two or more kinds of liquid may be supplied. 
     The tank  6   a  may be supplied with two or more kinds of liquid to produce the treatment liquid  110 . 
     In the case where the treatment liquid  110  is APM, for instance, the tank  6   a  may be supplied with ammonia and hydrogen peroxide solution to produce the treatment liquid  110 . 
     In the case where the treatment liquid  110  is SPM, for instance, the tank  6   a  may be supplied with sulfuric acid and hydrogen peroxide solution to produce the treatment liquid  110 . 
     That is, the tank  6   a  may be supplied with a plurality of raw materials to produce the treatment liquid  110 . 
     The substrate treatment device  1   a  according to this embodiment can enjoy a function and effect similar to those of the aforementioned substrate treatment device  1 . 
     The embodiments have been illustrated above. However, the invention is not limited to the above description. 
     Those skilled in the art can appropriately modify the above embodiments by addition, deletion, or design change of components, or by addition, omission, or condition change of steps. Such modifications are also encompassed within the scope of the invention as long as they include the features of the invention. 
     For instance, the shape, dimension, material, placement, number and the like of the components of the substrate treatment device  1 ,  1   a  are not limited to those illustrated, but can be appropriately changed. 
     In the above description, the laminated substrate  100  (substrate  100   a ) is heated, and then cooled. Instead, the laminated substrate  100  (substrate  100   a ) may be cooled in the temperature control section  4 , and then heated by the treatment liquid  110  in the treatment bath  5   a.    
     The temperature control section  4  described above is configured to mount the laminated substrate  100  (substrate  100   a ). The temperature control section  4  may have the function of heating the laminated substrate  100  (substrate  100   a ) by bringing a heating medium (gas, solution, or solid) into contact with the laminated substrate  100  (substrate  100   a ). 
     The temperature control section  4  may have the function of cooling the laminated substrate  100  (substrate  100   a ) by bringing a cooling medium (gas, solution, or solid such as dry ice) into contact with the laminated substrate  100  (substrate  100   a ). 
     The temperature control section  4  can be provided at a place spaced from the treatment bath  5   a  as described above. Alternatively, the temperature control section  4  can be provided in the treatment bath  5   a,  or provided in the treatment bath  5   a  and a place spaced from the treatment bath  5   a.    
     For instance, heating and cooling may have already been performed before immersing the laminated substrate  100  (substrate  100   a ) in the treatment liquid  110 . In this case, the temperature control section  4  can be configured so that the laminated substrate  100  (substrate  100   a ) is heated and then cooled with a circulated heat medium. The laminated substrate  100  (substrate  100   a ) can be heated and cooled by sequentially circulating the heated heat medium and cooled heat medium. 
     Alternatively, a heating medium and a cooling medium may be alternately sprayed from a nozzle onto the surface of the laminated substrate  100  (substrate  100   a ) by a known spinning device. That is, a peeling or crack due to difference in linear expansion coefficient may be produced at at least one of the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102  before immersing the laminated substrate  100  (substrate  100   a ) in the treatment liquid  110 . 
     In the case of providing the temperature control section  4  in the treatment bath  5   a,  the treatment liquid  110  can be provided with regions having different temperatures in the height direction of the treatment bath  5   a.    
       FIG. 6  is a schematic sectional view for illustrating the treatment liquid  110  provided with regions having different temperatures. 
     In the case shown in  FIG. 6 , the treatment liquid  110  is provided with three regions having different temperatures. The temperature can be set to the highest in the topmost first region  110   a,  and decreased downward in the second region  110   b  and the third region  110   c  located below the first region  110   a.    
     In this case, the laminated substrate  100  (substrate  100   a ) is heated by being held inside the first region  110   a  until the passage of a prescribed time. Subsequently, the laminated substrate  100  (substrate  100   a ) is further submerged and sequentially held inside the second region  110   b  and inside the third region  110   c.  Then, by the temperature difference between the regions, peeling is caused at at least one of the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102 . 
     That is, the laminated substrate  100  (substrate  100   a ) is heated and cooled by changing the height position of the laminated substrate  100  (substrate  100   a ) in the treatment bath  5   a.  This produces a thermal stress at at least one of the interface between the device substrate  101  and the adhesive  102 , and the interface between the support substrate  103  and the adhesive  102 . The thermal stress is based on the difference in linear expansion coefficient of the device substrate  101  and the support substrate  103  from the adhesive  102 . The produced thermal stress produces e.g. a crack or gap. The treatment liquid  110  intrudes into the produced crack or gap. Thus, the adhesive  102  can be peeled from at least one of the device substrate  101  and the support substrate  103 . 
     In this case, the temperature control section  4  for heating the treatment liquid  110  in the first region  110   a  can be provided in the treatment bath  5   a.    
     In this case, the aforementioned control section  10  can control the relative position and the moving velocity of the laminated substrate  100  (substrate  100   a ) and the treatment liquid  110 . 
     Alternatively, peeling may be performed so that the laminated substrate  100  (substrate  100   a ) is first held in the third region  110   c  and raised to the first region  110   a.  The temperature may be configured so as to increase from the first region  110   a  toward the third region  110   c.  The number of regions is not limited to three as long as two or more regions are provided. 
     The components of the embodiments described above can be combined with each other as long as feasible. Such combinations are also encompassed within the scope of the invention as long as they include the features of the invention. 
     DESCRIPTION OF REFERENCE NUMERALS 
     
         
           1  substrate treatment device 
           1   a  substrate treatment device 
           2  container 
           3  housing section 
           4  temperature control section 
           5  treatment section 
           5   a  treatment bath 
           6  supply section 
           6   a  tank 
           7  recovery section 
           8  transport section 
           9  transport section 
           10  control section 
           16  supply section 
           16   a  gas supply section 
           16   c  liquid supply section 
           100  laminated substrate 
           100   a  substrate 
           101  device substrate 
           102  adhesive 
           103  support substrate 
           110  treatment liquid