Patent Publication Number: US-2023143413-A1

Title: Semiconductor apparatus and heating device in semiconductor apparatus

Description:
TECHNICAL FIELD 
     The present disclosure generally relates to the field of semiconductor apparatus and, more particularly, to a heating device in a semiconductor apparatus and a semiconductor apparatus. 
     BACKGROUND 
     With the continuous development of the semiconductor industry, semiconductor processing is more diverse. However, no matter what kind of process, temperature is an important part of it. Temperature of the process directly affects the apparatus capacity and cost. Generally, a wafer is placed on a heater of a process chamber for processing. During this process, the temperature of the heater is required to remain unchanged. Currently, a method of simultaneously controlling heating and cooling is usually used to keep the temperature unchanged. 
     However, in a physical vapor deposition (PVD) process, the temperature is difficult to be kept unchanged, because the PVD process is to deposit a sputtered target material onto the wafer by a sputtering deposition technology. Since the temperature of the sputtered target material is high, the target material may transfer its own heat through the wafer to the heater that carries the wafer during deposition. Thus, the surface temperature of the heater increases. As process time increases, the surface temperature of the heater gets higher and higher. Although the heater can be cooled by a cooling device arranged under the heater, the following problems may be caused. 
     Since heat exchange efficiency of the cooling device is fixed, if heat dissipated by the cooling device is more than the heat generated by the heater, the temperature of the heater cannot be maintained at a relatively high temperature. If the heat dissipated by the cooling device is less than the heat increased by the heater, the temperature of the heater cannot be maintained at a relatively low temperature. Thus, the cooling device may limit a temperature application range of the heater, which cannot satisfy temperature requirements. 
     SUMMARY 
     The purpose of the present disclosure is to provide a heating device in a semiconductor apparatus and the semiconductor apparatus to expand the application temperature range of the heating device to satisfy different temperature requirements. 
     To achieve the above object, embodiments of the present disclosure provide a heating apparatus in a semiconductor apparatus, which is arranged in a process chamber of the semiconductor apparatus and includes: 
     a heating body configured to carry a wafer, a heating member configured to generate heat being arranged in the heating body; and 
     a cooling structure arranged below the heating body, the cooling structure being configured to selectively perform heat exchange with the heating body at different positions away from the heating body. 
     In some embodiments, the cooling structure includes: 
     a cooling body, a cooling member configured to perform heat exchange with the heating body being arranged in the cooling body; and 
     a cooling ascending and descending assembly connected to the cooling body and configured to drive the cooling body to ascend and descend to adjust a distance between the cooling body and the heating body in a vertical direction. 
     In some embodiments, the heating device further includes a connection member and a sealing structure, wherein: 
     the connection member is connected to the heating body, the connection member and the heating body form accommodation space at a bottom of the heating body, the cooling body is located in the accommodation space, and the cooling ascending and descending assembly is extended to outside of the process chamber passing through a through-hole arranged at a bottom of the process chamber; and 
     an upper end of the sealing structure is sealed with and connected to the connection member, and a lower end of the sealing structure is sealed with and connected to the bottom of the process chamber to seal the accommodation space and the through-hole. 
     In some embodiments, the sealing structure includes a bellows and a bellows shaft, wherein: 
     an upper end of the bellows shaft is connected to the connection member, and a lower end of the bellows shaft is extended to the outside of the process chamber passing through the through-hole to be connected to an ascending and descending drive source; and 
     the bellows is sleeved at the bellows shaft, an upper end of the bellows is sealed with and connected to the connection member, and a lower end of the bellows is sealed with and connected to the bottom of the process chamber to seal the accommodation space and the through-hole. 
     In some embodiments, the cooling ascending and descending assembly includes a lift member, at least one screw, and at least one elastic member, wherein hollow space communicating with the accommodation space is arranged in the bellows shaft, the lift member is located in the hollow space, and an upper end of the lift member is connected to the cooling body; 
     at least one threaded hole is arranged at a bottom surface of the lift member, at least one mounting hole is arranged at an inner surface of the bellows shaft opposite to the bottom surface of the lift member, and the mounting hole is coaxially arranged with the threaded hole in a one-to-one correspondence; 
     the screw is threadedly connected to the corresponding threaded hole passing through the mounting hole from the bottom of the bellows shaft to a top in a one-to-one correspondence; and 
     the elastic member is arranged in a one-to-one correspondence with the screw, is located between the bottom surface of the lift member and the inner surface of the bellows shaft, and is in a compressed state. 
     In some embodiments, lead-out space and two first lead-out through-holes communicating with the lead-out space are arranged in the lift member, two second lead-out through-holes communicating with the hollow space are arranged in the bellows shaft, and the two second lead-out through-holes are coaxially arranged with the two first lead-out through-holes; and 
     the cooling member further includes a cooling pipeline configured to transfer cooling water, a water inlet pipeline, and a water outlet pipeline, an end of the water inlet pipeline and an end of the water outlet pipeline are connected to an inlet and an outlet of the cooling pipeline, respectively, and the other end of the water inlet pipeline and the other end of the water outlet pipeline are extended the outside of the process chamber passing through the corresponding first lead-out through-hole and the second lead-out through-hole in sequence. 
     In some embodiments, the cooling structure includes a plurality of cooling bodies, the plurality of cooling bodies being arranged at intervals in a direction away from a bottom surface of the heating body, and a cooling member configured to perform heat exchange with the heating body being arranged in each of the cooling bodies. 
     In some embodiments, the heating device further includes a connection member and a sealing structure, wherein: 
     the connection member is connected to the heating body, the connection member forms accommodation space with the heating body at a bottom of the heating body, and the plurality of cooling bodies are located in the accommodation space, wherein each of the cooling members includes a cooling pipeline configured to transfer cooling water, a water inlet pipeline, and a water outlet pipeline, an end of the water inlet pipeline and an end of the water outlet pipeline are connected to an inlet and an outlet of the cooling pipeline, respectively, and the other end of the water inlet pipeline and the other end of the water outlet pipeline are extended to the outside of the process chamber passing through the through-hole arranged at the bottom of the process chamber; and 
     an upper end of the sealing structure is sealed with and connected to the connection member, and a lower end of the sealing structure is sealed with and connected to the bottom of the process chamber to seal the accommodation space and the through-hole. 
     In some embodiments, the sealing structure includes a bellows and a bellows shaft, wherein: 
     an upper end of the bellows is connected to the connection member, a lower end of the bellows shaft is extended to the outside of the process chamber passing through the through-hole to be connected to an ascending and descending drive source, the bellows shaft is provided with hollow space communicating with the accommodation space and a plurality of pairs of lead-out through-holes communicating with the hollow space, and the other end of the water inlet pipeline and the other end of the water outlet pipeline are extended to the outside of the process chamber through a pair of corresponding lead-out through-holes; and 
     the bellows is sleeved at the bellows shaft, an upper end of the bellows is sealed with and connected to the connection member, and a lower end of the bellows is sealed with and connected to the bottom of the process chamber to seal the accommodation space and the through-hole. 
     In some embodiments, an upper surface of a most upper cooling body is attached to an upper surface of the heating body. 
     In some embodiments, a lower surface of the heating body is parallel to an upper surface of the cooling body. 
     In some embodiments, the heating device further includes a heat exchange gas inlet pipeline, a gas outlet end of the heat exchange gas inlet pipeline is communicated with the accommodation space, and a gas inlet end of the heat exchange gas inlet pipeline is configured to be connected to a heat exchange gas source. 
     As another technical solution, embodiments of the present disclosure further provide a semiconductor apparatus, including a process chamber, and further including the heating device of embodiments of the present disclosure, and the heating device is arranged in the process chamber. 
     The beneficial effects of the present disclosure include as follows. 
     The heating device in the semiconductor apparatus provided by embodiments of the present disclosure may perform heat exchange with the heating body selectively at different positions away from the heating body through the cooling structure arranged below the heating body. Thus, the cooling structure may cool the heating body with different heat exchange efficiencies. Thus, the heat exchange may be performed at a position close to the heating body to control the temperature of the heating body in a relatively low-temperature range, and heat exchange may be performed at a position far away from the heating body to control the temperature of the heating body in a relatively high-temperature range to further expand the application temperature range of the heating device to satisfy different temperature requirements. 
     In the semiconductor apparatus provided by embodiments of the present disclosure, by using the above-mentioned heating device provided by embodiments of the present disclosure, the application temperature range of the heating device may be expanded to satisfy different temperature requirements. 
     The present disclosure may have other features and advantages. These features and advantages are obvious from the accompanying drawings combined in the specification and the subsequent specific embodiments or are described in detail in the accompanying drawings combined in the specification and the subsequent specific embodiments. These accompanying drawings and specific embodiments are used to explain the specific principle of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objects, features, and advantages of the present disclosure will become more apparent by performing a more detailed description of exemplary embodiments of the present disclosure in connection with the accompanying drawings. In exemplary embodiments of the present disclosure, same reference numerals generally refer to the same components. 
         FIG.  1    is a schematic structural diagram of a heating device according to some embodiments of the present disclosure. 
         FIG.  2    is a schematic structural diagram of a heating device of a semiconductor apparatus according to Embodiment 1 of the present disclosure. 
         FIG.  3    is a schematic structural diagram of a heating device of a semiconductor apparatus according to Embodiment 2 of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       FIG.  1    shows a heating device, which is configured to solve a problem that temperature on a surface of the heating device continuously increases. As shown in  FIG.  1   , the heating device is arranged in a process chamber (not shown in the figure) and includes a heating body  101 , a cooling body  103 , a heating coil  102 , a cooling water channel  104 , a water inlet pipeline  105   a,  a water outlet pipeline  105   b,  a connection cylinder  107 , and a fixing base  106 . The heating coil  102  may be arranged in the heating body  101  and configured to generate heat. The cooling water channel  104  may be arranged in the cooling body  103  and configured to exchange heat with the cooling body  103  by transmitting cooling water to indirectly cool the heating body  101 . An upper end of the connection cylinder  107  may be sealed with and connected to the cooling body  103 . A lower end of the connection cylinder  107  may be sealed with and connected to the fixing base  106 . The fixing base  106  may be configured to be fixedly connected to a bottom of the process chamber. 
     An inlet and an outlet of the cooling water channel  104  may be connected to one end of the water inlet pipeline  105   a  and one end of the water outlet pipeline  105   b,  respectively. and the other ends of the water inlet pipeline  105   a  and the water outlet pipeline  105   b  may extend outside of the process chamber through internal space  108  of the connection cylinder  107 , a through-hole  106   a  in the fixing base  106 , and a through-hole at the bottom of the process chamber (not shown in the figure) in sequence to be connected to a cooling water source. In addition, the heating device may further include a temperature measurement device  100 . A detection end of the temperature measurement device  100  may be in contact with the heating body  101 . A lead wire end may be led out to the outside of the process chamber through the same path as the above-mentioned water inlet pipeline  105   a  and water outlet pipeline  105   b.    
     When the above heating device is used, heat generated by the heating coil  102  may be used to maintain a process temperature of the heating body  101 . By introducing cooling water into the cooling water channel  104 , temperature rise of the heating body  101  caused by the processing process may be lowered. In this process, when the temperature of the heating body  101  is not higher than the process temperature, the heating coil  102  may work. When the temperature of the heating body  101  is higher than the process temperature, cooling water may be introduced into the cooling water channel  104  to maintain the temperature of the heating body  101  at the process temperature. 
     However, in practical applications, it is found that the above-mentioned heating device can only maintain the temperature of the heating body  101  in a relatively low-temperature range (for example, less than 100° C.). When the required process temperature is higher than this temperature range, since the thermal conductivity of the cooling body  103  is relatively high, after the cooling water is introduced into the cooling water channel  105 , the heat of the heating body  101  may be dissipated away quickly. If a speed of dissipating the heat is greater than a speed of generating heat by the heating coil  102  at a full power output, the temperature of the heating body  101  cannot reach a relatively high process temperature. Thus. A high-temperature requirement cannot be satisfied. 
     Another heating device may be similar to the structure of the above-mentioned heating device shown in  FIG.  1   . A difference between the two is that a certain gap may be arranged between the upper surface of the cooling body and the lower surface of the heating body, which reduces heat exchange efficiency between the cooling body and the heating body. Thus, the heat of the heating body may not be dissipated greatly to cause the temperature of the heating body to reach a relatively high process temperature. However, in practical applications, it is found that the heating device can only maintain the temperature of the heating body at a relatively high-temperature range (e.g., greater than 80° C.). When the required process temperature is lower than this temperature range, since the heat exchange efficiency of the cooling body is relatively low, a speed of dissipating the heat may be lower than a speed of increasing the heat of the heating body. Therefore, the temperature of the heating body cannot be controlled at a lower process temperature, and the low-temperature requirement cannot be met. In addition, when the apparatus needs to be maintained, the temperature of the heating body may need to be lowered to a normal temperature state to facilitate personnel to perform maintenance. However, since the heat exchange efficiency of the cooling body is low, the time to reduce the heating body to the normal temperature may be too long. Thus, the apparatus maintenance time may be too long, which may affect the apparatus utilization rate. 
     In order to solve the above problems, the present disclosure provides a heating device in a semiconductor apparatus. The heating device may be arranged in the process chamber of the semiconductor apparatus and include a heating body and a cooling structure. The heating body may be configured to carry a wafer. The heating body that is configured to generate heat may be configured in the heating body. The cooling structure may be arranged below the heating body. The cooling structure may be configured to selectively perform heat exchange with the heating body at different positions from the heating body. 
     The cooling structure may perform the heat exchange with the heating body at different positions from the heating body in a plurality of manners. For example, an overall height of the above-mentioned cooling structure may be adjusted to change the overall position of the cooling structure from the heating body. For another example, the overall height of the above cooling structure may remain unchanged, and the heat exchange efficiency may be changed only by selecting the cooling components (the components that perform heat exchange with the heating body) at different positions in the cooling structure to work. 
     By selectively exchanging heat with the heating body at different positions away from the heating body by the cooling structure, the cooling structure may cool the heating body with different heat exchange efficiencies. Thus, heat may be exchanged with the heating body at a position close to the heating body to control the temperature of the heating body in a low-temperature range, and heat may be exchanged with the heating body at a position far away from the heating body to control the temperature of the heating body in a high-temperature range. Thus, an application temperature range of the heating device may be expanded, which satisfies the high-temperature requirement and also the low-temperature requirement. 
     The present disclosure may be further described in detail below with reference to the accompanying drawings and specific embodiments. 
     Embodiment 1 
     With reference to  FIG.  2   , Embodiment 1 of the present disclosure provides a heating device in a semiconductor apparatus. The heating device includes a heating body  301  and a cooling structure. The heating body  301  may be configured to carry a wafer  110 . For example, the wafer  110  may be placed on an upper surface of the heating body  301 . The heating body  301  may be in a circular plate shape. Of course, another arbitrary shape may also be used according to specific needs. Moreover, a heating member  302  configured to generate heat may be arranged in the heating body  301 . The heating member  302  may include a heating element capable of generating heat, such as a heating resistance wire, a heating lamp, etc. Specifically, the heating member  302  shown in  FIG.  2    is a heating resistance wire, which is embedded in the heating body  301  from the lower surface of the heating body  301  and evenly distributed relative to the lower surface of the heating body  301 . Thus, the wafer  110  may be uniformly heated. 
     The cooling structure may be arranged below the heating body  301 . The cooling structure may include a cooling body  313  and a cooling lift assembly. A cooling member  304  configured to perform heat exchange with the heating body  301  may be arranged in the cooling body  313 . The cooling lift assembly may be connected to the cooling body  313  and configured to drive the cooling body  313  to ascend and descend to adjust a distance between the cooling body  313  and the heating body  301  in a vertical direction. That is, driven by the cooling lift assembly, an overall height of the cooling body  313  may change to adjust the position of the cooling member  304  of the cooling body  313  away from the heating body  301 . The closer the cooling member  304  to the heating body  301  is, the higher the heat exchange efficiency with the heating body  301  is, and the easier the temperature of the heating body  301  may be maintained at a low temperature. Thus, the low-temperature requirement may be satisfied. Otherwise, the further the cooling member  304  away from the heating body  301  is, the higher the heat exchange efficiency of the heating body  301  is, and the easier the temperature of the heating body  301  may be maintained at a high temperature, which satisfies the high-temperature requirement. Thus, the application temperature range of the heating device may be expanded, which satisfies different temperature needs. In addition, with the above-mentioned cooling lift assembly, the overall height of the cooling body  313  may be adjusted freely. Thus, the flexibility of temperature adjustment may be improved. 
     In some embodiments, a lower end of the cooling lift assembly may need to be extended to the outside of the process chamber. In this case, in order to ensure the tightness of the process chamber. In some embodiments, the heating device may further include a connection member  307  and a seal structure. The connection member  307  may be connected to the heating body  301 . The connection member  307  may form accommodation space  310  with the heating body  301  at the bottom of the heating body  301 . The cooling body  313  may be located in the accommodation space  310 . The cooling lift assembly may be extended to the outside of the process chamber  400  passing through the through-hole arranged at the bottom (not shown) of the process chamber  400 . The upper end of the seal structure may be sealed and connected to the bottom of the process chamber  400 . The seal structure may be configured to seal the accommodation space  310  and the through-hole. An internal part of a dashed line block may represent an internal part of the process chamber  400 . An outer part of the dashed line block may represent outside of the process chamber. 
     In some embodiments, in order to facilitate disassembly and assembly, and to protect the heating body  301  from being damaged during disassembly and assembly, the connection member  307  may be fixed at the bottom of the heating body  301  through an annular connection piece  306 . The annular connection piece  306  may be sealed with and connected to the heating body  301  and the connection member  307 , respectively. In this case, the above-mentioned annular connection piece  306 , the connection member  307 , and the heating body  301  may form the above-mentioned accommodation space  310 . Various sealing and connection manners may be included, for example, welding, or threaded connection with vacuum sealing treatment. Of course, in practical applications, the connection member  307  may also be directly connected to the heating body  301 . 
     The above sealing structure may include various structures. For example, as shown in  FIG.  2   , in this embodiment, the sealing structure includes a bellows  308  and a bellows shaft  305 . An upper end of the bellows shaft  305  may be connected to the connection member  307 , and a lower end of the bellows shaft  305  may extend to the outside of the process chamber  400  by passing through the through-hole and may be configured to be connected to a lift drive source (not shown in the figure). Driven by the lift drive source, the bellows shaft  305  may be configured to drive the heating body  301  to ascend and descend through the connection member  307 . Thus, the heating body  301 , the connection member  307 , and the cooling body  313  may all ascend and descend synchronously. The bellows  308  may be sleeved on the bellows shaft  305 . The upper end of the bellows  308  may be sealed with and connected to the connection member  307 . The lower end of the bellows  308  may be sealed with and connected to the bottom of the process chamber  400  and configured to seal the accommodation space  310  and the above-mentioned through-hole. Thus, the sealing performance of the process chamber  400  may be ensured. 
     In some embodiments, the lower end of the above-mentioned bellows  308  may be sealed with and connected to a bottom wall (not shown in the figure) of the process chamber  400  through a fixing base  309 . A fixing base through-hole  309  may be arranged in the fixing base  309 . The lower end of the bellows shaft  305  may extend to the outside of the process chamber  400  through the fixed base through-hole  309   a  and the through-hole at the bottom of the process chamber  400  in sequence. It can be understood that the above-mentioned bellows  308  may be also configured to seal the fixing base through-hole  309   a.    
     The above-mentioned cooling lift assembly may include various structures. For example, in this embodiment, the cooling lift assembly may include a lift member  303 , at least one screw  401 , and at least one elastic member  402 . Hollow space  305   a  that is communicated with the accommodation space  310  may be arranged in the bellows shaft  305 . The lift member  303  may be located in the hollow space  305   a.  An upper end of the lift member  303  may be connected to the above cooling body  313 . A connection manner of the lift member  303  and the cooling body  313  may include, for example, an integration manner, a welding manner, etc. At least one threaded hole  403  may be arranged at a bottom surface of the lift member  303 . At least mounting hole  404  may be arranged on an inner surface of the bellows shaft  305  opposite to the bottom surface of the lift member  303 . The mounting holes  404  may be coaxially arranged with the threaded holes  403  in a one-to-one correspondence. The crews  401  may be threadedly connected to the threaded holes  403  passing through the mounting holes  404  in a one-to-one correspondence from bottom to top. The elastic members  402  may be arranged in a one-to-one correspondence with the screws  401 , may be located between the bottom surface of the lift member  303  and the inner surface of the bellows shaft  305 , and may be in a compressed state. 
     In some embodiments, a plurality of screws  401  may be included (two screws  401  are shown in  FIG.  2   ). The plurality of screws  401  may be arranged symmetrically relative to an axis of the bellows shaft  305 . By arranging the plurality of screws  401 , the stability of supporting the cooling body  313  may be improved. 
     When the above-mentioned screw  401  is rotated, since the screw is threadedly connected to the threaded hole  403  at the lift member  303 . With the thread cooperation, the screw  401  may be fixed. The lift member  303  may ascend or descend along a axial direction of the screw  401  to drive the cooling body  313  to ascend or descend synchronously. Meanwhile, since the elastic member  402  is in the compressed state, the elastic member  402  may always apply an upward elastic force to the lift member  303  to support the lift member  303  and the cooling body  313 . The elastic member  402  may include, for example, a compression spring. 
     It should be noted that the cooling lift assembly may not be limited to the above structure of this embodiment. In practical applications, the cooling lift assembly may further adopt any other structure that can drive the cooling body  313  to ascend and descend. 
     It should also be noted that, in this embodiment, the heating body  301  may realize ascending and descending using a heating ascending and descending assembly. However, embodiments of the present disclosure may be not limited to this. In practical applications, according to specific needs, the above heating ascending and descending assembly may not be provided. That is, the heating body  301  may be fixed and may not move relative to the process chamber. In this case, if the cooling lift assembly needs to be extended out of the process chamber, a corresponding sealing structure may be used to seal the through-hole at the bottom of the process chamber, which is configured for the cooling lift assembly to pass through to ensure the sealing performance of the process chamber. Of course, the above cooling and lifting assemblies may also be arranged inside the process chamber. In this case, an automatic control method may be used to provide ascending and descending power for the cooling and lifting assemblies. 
     In this embodiment, lead-out space  303   a  and two first lead-out through-holes communicating with the lead-out space  303   a  may also be arranged in the lifting member  303 . Moreover, two second lead-out through-holes communicating with the hollow space  305   a  may be arranged in the bellows shaft  305 . The two second lead-out through-holes may be coaxially arranged with the two first lead-out through holes. The above-mentioned cooling member  304  may include a cooling pipeline  304   a  configured to transfer cooling water, a water inlet pipeline  304   b,  and a water outlet pipeline  304   c.  One end of the water inlet pipeline  304   b  and one end of the water outlet pipeline  304   c  may be connected to the inlet and the outlet of the cooling pipeline  304   a,  respectively. The other end of the water inlet pipeline  304   b  and the other end of the water outlet pipeline  304   c  may be extended to the outside of the process chamber  400  through the corresponding first lead-out through-holes and the second lead-out through-holes in sequence to be able to provide a water source connection of the cooling water. 
     In some embodiments, the above-mentioned cooling pipeline  304   a  may be an annular water pipe or may also be a helical water pipe, which is evenly distributed relative to the upper surface of the cooling body  313  to improve cooling uniformity. 
     In this embodiment, In some embodiments, the lower surface of the heating body  301  and the upper surface of the cooling body  313  may be parallel to each other. Thus, heat exchange efficiencies between the upper surface of the cooling body  313  at different positions and the heating body  301  can be the same. Thus, the temperature uniformity of the heating body  301  may be improved. 
     In this embodiment, In some embodiments, the heating device may further include a heat exchange gas input pipeline (not shown in the figure). A gas outlet end of the heat exchange gas input pipeline may be communicated with the above-mentioned accommodation space  310 . An inlet end of the heat exchange gas input pipeline may be connected to a heat exchange gas source. By introducing the heat exchange gas to the accommodation space  310 , a gas pressure in the accommodation space  310  may be improved, which may further improve the heat exchange efficiency and improves the cooling efficiency. Especially, when the apparatus needs maintenance, time for reducing the heating body to a normal temperature may be shortened, which reduces apparatus maintenance time to improve the apparatus utilization rate. The heat exchange gas may be, for example, compression gas (e.g., high-pressure air). 
     Embodiment 2 
     Referring to  FIG.  3   , Embodiment 2 of the present disclosure provides a heating device in the semiconductor apparatus. Compared with Embodiment 1 above, the heating device also includes a heating body  301  and a cooling structure. The difference may include that the specific structure of the cooling structure is different. 
     Specifically, in this embodiment, the cooling structure may include a plurality of cooling bodies. The plurality of cooling bodies may be arranged at intervals along a direction away from the lower surface of the heating body  301 . A cooling member configured to perform heat exchange with the heating body  301  may be arranged in each cooling body. Since different cooling members have different positions from the heating body  301 , by selectively controlling the cooling member of the at least one cooling body to work, cooling may be performed on the heating body  301  with different heat exchange efficiencies to satisfy different temperature needs. That is, positions of the cooling bodies from the heating body  301  may be unchanged. The heat exchange efficiency may be changed only by selecting the cooling members at the different positions to work. 
     In some embodiments, the upper surface of the uppermost cooling body may be attached to the upper surface of the heating body  301 . Thus, the heat exchange efficiency between the uppermost cooling body and the heating body  301  may be further improved to satisfy the high cooling speed requirement. 
     For example,  FIG.  3    shows two cooling bodies, which are a first cooling body  303 A and a second cooling body  303 B located below the first cooling body  303 A. The second cooling body  303 B may be arranged with the first cooling body  303 A at an interval. A first cooling member  304 A may be arranged in the first cooling member  304 A. A second cooling member  304 B may be arranged in the second cooling body  304 B. 
     The first cooling member  304 A and the second cooling member  304 B may operate individually or simultaneously. When the first cooling member  304 A and the second cooling member  304 B work simultaneously, the heat exchange efficiency may be the highest. Since the first cooling member  304 A is closer to the second cooling member  304 B because the first cooling part  304 A is closer to the heating body  301  than the second cooling member  304 B. The heat exchange efficiency of the first cooling member when the first cooling member  304 A operates individually may be higher than the heat exchange efficiency of the second cooling member  304 B when the second cooling member  304 B operates individually. Therefore, by selecting at least one of the first cooling member  304 A and the second cooling member  304 B, switching may be performed among the three types of the heat exchange efficiencies to satisfy different temperature requirements. It is easy to understand that the greater the number of cooling bodies is, the more choices of the heat exchange efficiency have, and the greater the flexibility of temperature regulation is. 
     In this embodiment, the heating device may also include a heating ascending and descending assembly configured to drive the heating body  301  to ascend and descend. The heating ascending and descending assembly may adopt a structure similar to the above-mentioned Embodiment 1 (refer to the relevant part of  FIG.  2   ). A difference may include that, as shown in  FIG.  3   , in this embodiment, an upper end of a connection member  307 ′ is sealed with and connected to the first cooling body  303 A and form accommodation space  310 ′ at the bottom of the first cooling body  303 A with the first cooling body  303 A. The second cooling body  303 B may be located in the accommodation space  310 ′ and may be integrated with the connection member  307 ′. That is, the above-mentioned connection member  307 ′ may be used as the second cooling body  303 B. The second cooling member  304 B may be arranged n the connection member  307 ′ to seal the process chamber. 
     The other structures of the heating ascending and descending assembly may be the same as the above-mentioned Embodiment 1. Detailed description may be in the above-mentioned Embodiment 1 and may not be repeated here. 
     In this embodiment, each cooling member may include a cooling pipeline configured to transfer cooling water, a water inlet pipeline, and a water outlet pipeline. The water inlet pipeline and the water outlet pipeline may be extended to the outside of the process chamber in the same manner as in the above-mentioned Embodiment 1. Taking the first cooling member  304 A and the second cooling member  304 B shown in  FIG.  3    as an example, the water inlet pipeline A 1  and the water outlet pipeline A 2  in the first cooling part  304 A, and the water inlet pipeline B 1  and the water outlet pipeline B 2  in the second cooling member  304 B may all be extended to the outside of the process chamber through the hollow space of the bellows shaft (not shown in the figure). 
     Other structures of the heating device of Embodiment 2 of the present disclosure are similar to those in Embodiment 1 above. The detailed description is included in the above-mentioned Embodiment 1 and may not be repeated here. 
     In summary, In the heating device in the semiconductor apparatus provided by embodiments of the present disclosure, through the cooling structure arranged below the heating body, heat exchange may be performed selectively at different positions from the heating body. Thus, the cooling structure may cool the heating body with different heat exchange efficiencies. Therefore, heat exchange may be performed at a position close to the heating body to control the temperature of the heating body to be in a low-temperature range. The heat exchange may be performed at a position far away from the heating body to control the temperature of the heating body to be within the high-temperature range. The application temperature range of the heating device may be expanded to satisfy different temperature requirements. 
     Another embodiment of the present disclosure further provides a semiconductor apparatus, such as a physical vapor deposition apparatus, including a process chamber and a heating device arranged in the process chamber. The heating device may adopt the heating device provided by the above-mentioned embodiments of the present disclosure. 
     In the semiconductor apparatus provided by embodiments of the present disclosure, by using the above-mentioned heating device provided by embodiments of the present disclosure, the application temperature range of the heating device may be expanded to satisfy different temperature requirements. 
     Various embodiments of the present disclosure have been described above. The above descriptions are exemplary, not exhaustive, and not limited to the disclosed embodiments. Modifications and variations made without departing from the scope or spirit of scopes of embodiments of the present disclosure may be apparent to those of ordinary skill in the art.