WET PROCESSING SYSTEM AND SYSTEM AND METHOD FOR MANUFACTURING SEMICONDUCTOR STRUCTURE

A semiconductor structure manufacturing system is provided. The system includes a load lock chamber, first chambers, second chambers and a first robot. The load lock chamber is configured to store wafers that are to be processed. The first chambers are configured to process the wafers. Each of the first chambers has first stage plates for supporting the wafers. The second chambers are configured to process a single wafer. Each of the second chambers has a second stage plate for supporting a wafer. The first robot is configured to transport the wafers from the load lock chamber to the first chambers. The first robot is arranged between the first chambers, the second chambers and the load lock chamber.

BACKGROUND

The fabrication of semiconductor devices includes hundreds of individual steps performed on a wafer. For example, the steps may include oxidation, diffusion, ion implantation, thin film deposition, cleaning, etching and lithography. Processing chambers for such steps have been designed as multiple processing stations or modules, wherein different processing chambers are designed to perform certain types of processing operations. However, transportation between different processing chambers is time consuming and a yield of the semiconductor devices may be influenced by the processing procedure.

DETAILED DESCRIPTION

Some embodiments of the present disclosure provide a system for wet processing, a system for manufacturing a semiconductor structure, and a method for manufacturing a semiconductor structure that provides one or more improvements over existing approaches. The present disclosure provides a system that integrates a bath-type tool and a single-type tool. By integrating the bath-type tool and the single-type tool as introduced below, transportation time between different processing chambers may be reduced. In addition, a footprint of such system may be reduced, and cleanroom space may be saved. Furthermore, a yield of the semiconductor structures may be improved due to in-situ processing procedure.

FIG.1is a schematic top view of a semiconductor structure manufacturing system100according to aspects of one or more embodiments of the present disclosure. In some embodiments of the present disclosure, the semiconductor structure manufacturing system100may include one or more load lock chambers102, one or more first chambers104, one or more second chambers106and a first robot108. The first robot108may be arranged between the first chambers104, the second chambers106and the load lock chambers102. In some embodiments, the first chambers104and the second chambers108are arranged on different sides of the first robot108. For example, the first chambers104are arranged on a first side118aof the first robot108, while the second chambers106are arranged on a second side118bof the first robot108.

In some embodiments of the present disclosure, the semiconductor structure manufacturing system100may be configured to process one or more substrates120(as shown inFIGS.2A,2BandFIG.3). In some embodiments, the substrate120may be a wafer that includes one or more semiconductor layer(s), conductor(s), and/or insulator layer(s). The semiconductor layer(s) may include an elementary semiconductor such as silicon or germanium with a crystalline, polycrystalline, amorphous, and/or other suitable structure; a compound semiconductor including silicon carbide, gallium arsenic, gallium phosphide, indium phosphide, indium arsenide, and/or indium antimonide; an alloy semiconductor including SiGe, GaAsP, AlInAs, AlGaAs, GaInAs, GaInP, and/or GaInAsP; any other suitable material; or combinations thereof. In some embodiments, combinations of semiconductors may take the form of a mixture or a gradient such as a wafer in which the ratio of Si and Ge vary across locations. In some embodiments, the substrate120includes layered semiconductors. For example, the layered semiconductors may be disposed on an insulator to produce a silicon-on-insulator (SOI) wafer, a silicon-on-sapphire wafer, or a silicon-germanium-on-insulator wafer. Alternatively, the layered semiconductors may be disposed on a glass to produce a thin film transistor (TFT). In some embodiments, the substrate120may undergo many processing steps. For example, the substrate120may be subjected to an etching process and/or a cleaning process.

In some embodiments of the present disclosure, the processing chambers (i.e., the first chamber104or the second chamber106) of the semiconductor structure manufacturing system100may be configured to perform any manufacturing procedure on the substrate120. In some embodiments, the processing chambers (i.e., the first chamber104or the second chamber106) may be configured to perform wet processes. Examples of the wet processes include a wet etching process, a cleaning process (such as a rinsing process and/or a plasma ashing process), and combinations thereof. In some embodiments, the first chambers104and the second chambers106may include different processing chemicals. In some alternative embodiments, the first chambers104and the second chambers106may include a same processing chemical. Details of the processing chambers (i.e., the first chamber104or the second chamber106) will be described with reference toFIGS.2A,2BandFIG.3.

FIG.2Ais a schematic top view of the first chamber104according to aspects of one or more embodiments of the present disclosure.FIG.2Bis a schematic view of the first chamber104according to aspects of one or more embodiments of the present disclosure. In some embodiments, the first chambers104may be configured to process more than one of the substrates120. In some embodiments, each of the first chambers104has more than one first stage plates114for supporting the substrates120. In some embodiments, the first chamber104is configured as a bath-type tool (or a batch-type tool), which may be configured to process one or more batches of the substrates120in a single manufacturing process. For example, the substrates120in one first chamber104may be subjected to a same wet process. In some embodiments, the first chamber104is connected to a chemical control module124. The chemical control module124may be configured to supply desired chemicals to the first chamber104. In some embodiments, multiple first chambers104are connected to a single chemical control module124. Alternatively or additionally, each of the first chambers104may include functions such as spin-dry bath, ultrasonic vibration, or other suitable functions.

FIG.3is a schematic top view of the second chamber106according to aspects of one or more embodiments of the present disclosure. In some embodiments, each of the second chambers106may be configured to process a single substrate120. In some embodiments, the second chamber106is configured as a single-type tool, which may be configured to process only one of the substrates120in a single manufacturing process. In some embodiments, the second chamber106is connected to a chemical control module126. The chemical control module126may be configured to supply desired chemicals to the second chamber106. In some embodiments, multiple second chambers106are connected to a single chemical control module126. Alternatively, the first chambers104and second chambers106are connected to a same chemical control module. In some embodiments, each of the second chambers106may include functions such as spin-dry bath, ultrasonic vibration, vapor/steam or other suitable functions. In some embodiments, the second chamber106may further include one or more nozzles128. The nozzle128may be a jet-dispense nozzle, DI (deionized water) spray nozzle, or another suitable nozzle.

Referring toFIG.1again, in some embodiments, the first robot108(which is sometimes referred to as a center robot) includes a transportation fork108a, a transportation robot arm108band a transportation stage108c. The transportation fork108amay be connected to the transportation robot arm108bsuch that the transportation fork108ais able to rotate freely. In some embodiments, the transportation fork108amay be inserted into the processing chamber (i.e., the first chamber104or the second chamber106) to acquire one or more processed substrates (i.e., the substrate120). Next, the transportation fork108amay transport the substrate120into the load lock chamber102or other process chambers (i.e., the first chamber104or the second chamber106) for further processes. Alternatively, the transportation fork108amay be inserted into the load lock chamber102to acquire one or more substrates that are to be processed (i.e., the substrate120). Next, the transportation fork108amay transport the substrate120into the processing chamber (i.e., the first chamber104or the second chamber106).

In some embodiments, the load lock chamber102may be configured to store one or more substrates120that are to be processed or one or more processed substrates120. In some embodiments, when the substrate120is transported from the processing chamber (i.e., the first chamber104or the second chamber106) into the load lock chamber102, the load lock chamber102is sealed. Alternatively or additionally, the load lock chamber102may be capable of creating an atmosphere compatible with the processing chamber (i.e., the first chamber104or the second chamber106) depending on where the loaded substrate120is to be placed next. For example, the gas content within the load lock chamber102may be altered to adjust the atmosphere within the load lock chamber102. The gas content may be adjusted by mechanisms such as addition of gas, creation of vacuum, and/or other suitable methods. When the atmosphere within the load lock chamber102matches the atmosphere within the processing chamber (i.e., the first chamber104or the second chamber106), a substrate loading-unloading port (not shown) of the load lock chamber102may be opened, and the substrate120located inside the load lock chamber102may be accessed.

Alternatively or additionally, the load lock chamber102may be connected to a temperature control module122. The temperature control module122may be configured to control a temperature of the respective load lock chamber102. In some embodiments, the load lock chamber102may be configured to cool the processed substrates120. In such embodiments, the temperature control module122may inject a cooling gas into the internal cavity of the load lock chamber102. In some embodiments, the cooling gas includes clean dry air. Alternatively or additionally, the cooling gas includes an inert gas. The cooling gas may be selected from the group consisting of nitrogen, argon, helium, and combinations thereof. In some embodiments, a temperature of the cooling gas is less than room temperature. In some embodiments, the load lock chamber102may be configured to pre-heat the substrates120that are to be processed. In such embodiments, the temperature control module122may inject a heating gas into the internal cavity of the load lock chamber102. In some embodiments, the heating gas includes clean dry air. Alternatively or additionally, the heating gas includes an inert gas. The heating gas may be selected from the group consisting of nitrogen, argon, helium, and combinations thereof. In some embodiments, a temperature of the heating gas is greater than room temperature. In some alternative embodiments, the load lock chamber102may be capable of reducing the impact of chemical residues on the surfaces of the processed substrates120by injecting an inert gas. The inert gas may be selected from the group consisting of nitrogen, argon, helium, and combinations thereof.

As illustrated inFIG.1, the load lock chambers102, the first chambers104, the second chambers106, and the first robot108are spatially connected with each other. In other words, the load lock chambers102, the first chambers104, and the second chambers106are all connected with each other through the first robot108. In this way, the substrate120may be transported freely among the load lock chambers102, the first chambers104, and the second chambers106. For example, the processed substrates120may respectively be transported from the first chamber104-1into the second chamber106-1and the second chamber106-2.

In some embodiments, the semiconductor structure manufacturing system100may further include one or more load ports110and a second robot112. The substrate120may be loaded through the load port110. In some embodiments, the load port110may be configured to accommodate one or more cassettes (not shown). The cassette may be a front-opening unified pod (FOUP), a front-opening shipping box (FOSB), a standard mechanical interface (SMIF) pod, or another suitable container. In some embodiments, the cassettes may be transferred from a stocker (not shown) to the load port110by an overhead hoist transport (OHT; not shown). In some embodiments, the cassettes are containers for holding one or more substrates120and for transporting the substrates120between manufacturing tools. In some embodiments, the cassettes may have features such as coupling locations and electronic tags to facilitate use with an automated materials handling system. In some embodiments, the cassettes are sealed in order to provide a micro-environment for the substrate120contained within to avoid contamination. To prevent loss of the controlled atmosphere, each cassette may have a door specifically designed such that the cassette remains sealed until it is docked with the load port110.

In some embodiments, the second robot112(which is sometimes referred to as a front robot) includes a transportation fork112a, a transportation robot arm112band a transportation stage112c. The transportation fork112amay be connected to the transportation robot arm112bsuch that the transportation fork112ais able to rotate freely. In some embodiments, the transportation fork112amay be inserted into the load lock chamber102to acquire one or more processed substrates (i.e., the substrate120). Next, the transportation fork112amay transport the substrate120into the load port110. Alternatively, the transportation fork112amay be inserted into the load port110to acquire one or more substrates that are to be processed (i.e., the substrate120). Next, the transportation fork112amay transport the substrate120into the load lock chamber102. In some embodiments, when the substrate120is transported from the load port110into the load lock chamber102, the load lock chamber102is sealed. In some embodiments, the load lock chamber102may be capable of creating an atmosphere compatible with the load port110.

In some embodiments, the second robot112allows the substrate120to be transported among the load ports110and the load lock chambers102in any direction. In some embodiments, the loaded substrates120in different load ports110(e.g., load ports110-1and110-2) may be subjected to a same manufacturing procedure. The second robot112may be configured to acquire the loaded substrates120in different load ports110that are subjected to a same manufacturing procedure, and then transport the loaded substrates120into a single load lock chamber102. Thereafter, the first robot108may be configured to acquire the loaded substrates120in the single load lock chamber102to the respective processing chambers (i.e., the first chamber104or the second chamber106).

In some embodiments, the semiconductor structure manufacturing system100allows the substrate120to be transported by the first robot108and the second robot112in any direction among the processing chambers (i.e., the first chamber104or the second chamber106), the load lock chambers102, and the load ports110. For example, the substrate120may be transported from the processing chamber (i.e., the first chamber104or the second chamber106) to the load port110via the first robot108, the load lock chamber102, and the second robot112in sequential order. In some alternative embodiments, the substrate100may be transported from the load port110to the processing chamber (i.e., the first chamber104or the second chamber106) via the second robot112, the load lock chamber102, and the first robot108in sequential order.

In some embodiments of the present disclosure, the semiconductor structure manufacturing system100allows the substrate120to be transported by the first robot108in any direction among different processing chambers (i.e., the first chamber104or the second chamber106). For example, the substrate120may be transported from the first chamber104to the second chamber106by the first robot108. In some alternative embodiments, the substrate120may be transported from the second chamber106to the first chamber104by the first robot108. Alternatively, the substrate120may be transported from the first chamber104to the second chamber106via the load lock chamber102.

As shown inFIG.1, for a depicted embodiment, a number of the load ports110is m, a number of the load lock chambers102is x, a number of the first chambers104is y, and a number of the second chambers106is z, wherein m, x, y and z are integers. The number of the load ports110, the number of the load lock chambers102, the number of the first chambers104, and the number of the second chambers106may be altered according to different implementations. In some embodiments, the number of the first chambers104is equal to the number of the second chambers106. In some alternative embodiments, the number of the second chambers106is greater than the number of the first chambers104.

The present disclosure provides embodiments of a semiconductor structure manufacturing system100that provide one or more improvements over existing approaches. The first chambers104are configured to perform batch processing, in which multiple substrates120are processed at the same time, while the second chambers106are configured to perform single wafer processing, in which only a single substrate120is processed at a time. The batch processing may be a cost-effective approach, while the processing of individual wafers (single wafer processing) may enhance process control and achieve finer features. By integrating the first chambers104and the second chambers106in the semiconductor structure manufacturing system100, transportation time between different processing chambers (different processing modules) may be reduced. In addition, a footprint of the semiconductor structure manufacturing system100may be reduced, thereby saving space in a cleanroom. Furthermore, by integrating the first chambers104and the second chambers106in the semiconductor structure manufacturing system100, a yield of the semiconductor structures may be improved due to in-situ processing procedure.

The systems of the present disclosure are not limited to the above-mentioned embodiments and may have other embodiments. To simplify the description and for convenience of comparison between each of the embodiments of the present disclosure, identical (or like) components in each of the following embodiments are marked with identical (or like) numerals. For making it easier to compare differences between the embodiments, the following description will detail dissimilarities among different embodiments, while descriptions of identical features, values and definitions will not be repeated.

FIG.4is a schematic top view of a semiconductor structure manufacturing system200according to aspects of one or more embodiments of the present disclosure. In some embodiments, the semiconductor structure manufacturing system200may include one or more load lock chambers102, one or more first chambers104, one or more second chambers106, a first robot108, one or more load ports110and a second robot112. The first robot108may be arranged between the first chambers104, the second chambers106and the load lock chambers102. The second robot112may be arranged between the load ports110and the load lock chambers102. In some embodiments, the first chambers104and the second chambers106are arranged in an alternating order on a first side118aand a second side118bof the first robot108.

FIG.5is a schematic top view of a semiconductor structure manufacturing system300according to aspects of one or more embodiments of the present disclosure. In some embodiments, the semiconductor structure manufacturing system300may include one or more load lock chambers102, one or more first chambers104, one or more second chambers106, and one or more load ports110. The semiconductor structure manufacturing system300may further include a first robot108, a second robot112and a third robot308. The second robot112may be arranged between the load ports110and the load lock chambers102. The first robot108and the third robot308may be arranged between the first chambers104, the second chambers106and the load lock chambers102. In some embodiments, a second side118bof the first robot108faces a first side318aof the third robot308. In some embodiments, the first robot108is arranged adjacent to the first chambers104, and the third robot308is arranged adjacent to the second chambers106. For example, the first chambers104are arranged on a first side118aof the first robot108, while the second chambers106are arranged on a second side308bof the third robot308. In some alternative embodiments, the first chambers104and the second chambers108are arranged in an alternating order on the first side118aof the first robot108and the second side318bof the third robot308.

In some embodiments, the first robot108is configured to transport the substrates120between the load lock chamber102and the first chambers104, while the third robot308is configured to transport the substrates120between the load lock chamber102and the second chambers106. In some embodiments, the third robot308(which is sometimes referred to as a center robot) includes a transportation fork308a, a transportation robot arm308band a transportation stage308c. The transportation fork308amay be connected to the transportation robot arm308bsuch that the transportation fork308ais able to rotate freely. In some embodiments, the transportation fork308amay be inserted into the second chambers106to acquire one or more processed substrates120. Next, the transportation fork308amay transport the substrate120into the load lock chamber102for further processes. Alternatively, the transportation fork308amay be inserted into the load lock chamber102to acquire one or more substrates120that are to be processed. Next, the transportation fork308amay transport the substrate120into the second chambers106.

FIG.6is a schematic top view of a semiconductor structure manufacturing system400according to aspects of one or more embodiments of the present disclosure. In some embodiments, the semiconductor structure manufacturing system400may include one or more load lock chambers102, one or more first chambers104, one or more second chambers106, and one or more load ports110. The semiconductor structure manufacturing system400may further include a first robot108and a second robot112. The first robot108may be arranged between the first chambers104, the second chambers106and the load lock chambers102. The second robot112may be arranged between the load ports110and the load lock chambers102. In some embodiments, the first chambers104and the second chambers106are disposed together on a side118cof the first robot108. In some alternative embodiments, the first chambers104and the second chambers108are arranged in an alternating order on the side118cof the first robot108.

FIG.7is a flowchart representing exemplary operations of a method500for manufacturing of a semiconductor structure by the semiconductor structure manufacturing system according to aspects of one or more embodiments of the present disclosure.

The method500begins at operation502by transporting a first substrate and a second substrate (i.e., the substrates120) from a load port110into a load lock chamber102. In some embodiments, the first substrate and the second substrate are unprocessed substrates loaded in a single load port110(e.g., load port110-1). In some embodiments, the first substrate and the second substrate are transferred from the load port110to a single load lock chamber102(e.g., load lock chamber102-1) by a second robot112. In some alternative embodiments, the first substrate and the second substrate are initially loaded in different load ports110. For example, the first substrate is loaded in the load port110-1, while the second substrate is loaded in a load port110-2. Next, the first substrate is transported from the load port110-1and the second substrate is transported from the load port110-2to the load lock chamber102-1. In some alternative embodiments, the first substrate and the second substrate are transported to different load lock chambers102. For example, the first substrate is transported to the load lock chamber102-1, while the second substrate is transported to a load lock chamber102-2.

In some embodiments, after the first substrate and the second substrate are received in the load lock chamber102, an environment of the load lock chamber102is changed to be compatible with the processing chamber (i.e., the first chamber104or the second chamber106) depending on where the loaded substrate120is to be placed next. For example, the load lock chamber102may be evacuated to a pressure substantially equal to that of the processing chamber. Alternatively or additionally, a temperature of the load lock chamber102may be varied by the temperature control module122to a temperature substantially equal to that of the processing chamber. For example, the first substrate and the second substrate may be pre-heated to a target temperature to facilitate the manufacturing procedures in the corresponding processing chamber.

At operation504, the first substrate and the second substrate are transported from the load lock chamber102into a first processing chamber (e.g., the first chamber104) to perform a first wet process. In some embodiments, the first processing chamber has a plurality of first stage plates (e.g., the first stage plates114) for supporting the first substrate and the second substrate. Examples of the first wet process may include a wet etching process and/or a cleaning process. For example, the first wet process may include APM (NH4OH/H2O2/H2O) cleaning, HPM (HCl/H2O2/H2O) cleaning, SPM (H2SO4/H2O2) cleaning, and/or DHF (HF/H2O) cleaning. The APM cleaning may be used to remove particles from surfaces of the first substrate and the second substrate. The HPM cleaning may be used to remove metallic contaminants from the surfaces of the first substrate and the second substrate. The SPM cleaning may be used to remove organic contaminants from the surfaces of the first substrate and the second substrate. The DHF cleaning may be used to remove native oxide from the surfaces of the first substrate and the second substrate. In some embodiments, the first substrate and the second substrate may optionally undergo one or more processes in the first processing chamber.

At operation506, the first substrate is transported from the first processing chamber into a second processing chamber (e.g., the second chamber106) to perform a second wet process. In some embodiments, the second processing chamber has a second stage plate (e.g., the second stage plate116) for supporting the first substrate. Examples of the second wet process may include a wet etching process and/or a cleaning process. For example, the second wet process may include soft spray cleaning and/or backside brushing. The soft spray cleaning may be used to remove particles from the surfaces of the first substrate and the second substrate by spraying DI water onto the surfaces using nitrogen gas. The backside brushing may be used to remove particles from backside surfaces of the first substrate and the second substrate. In some embodiments, the first substrate may optionally undergo one or more processes in the second processing chamber.

In some embodiments, the second wet process is different from the first wet process. In other words, the first wet process and the second wet process include different processing chemicals. Alternatively, the second wet process may be substantially same as the first wet process. In other words, the first wet process and the second wet process include a same processing chemical. In some embodiments, a cleaning effect of the second wet process is better than that of the first wet process due to enhanced (finer) process control of the processed first substrate.

In some embodiments, the method500further includes detecting and analyzing the first substrate and the second substrate after the first wet process by an analyzer (not shown). In some embodiments, the analyzer is configured to directly detect and analyze a composition of the first substrate or the second substrate. In some embodiments, the first substrate is transported from the first processing chamber into the second processing chamber if the analyzer detects that the first substrate does not meet a design requirement. For example, if the analyzer detects that there are unwanted particles remaining on the surface of the first substrate, the first substrate is transported from the first processing chamber into the second processing chamber for finer cleaning processes. Additionally, if the analyzer detects that there are no unwanted particles on the surface of the second substrate, the second substrate is transported from the first processing chamber into the load lock chamber.

At operation508, the first substrate is transported from the second processing chamber (e.g., the second chamber106) into the load lock chamber102. In some embodiments, the load lock chamber102is configured to cool the first substrate after the second wet process. In some alternative embodiments, the second substrate is transported from the first processing chamber (e.g., the first chamber104) into the load lock chamber102. In such embodiments, the load lock chamber102is configured to cool the second substrate after the first wet process. In some alternative embodiments, the processed first substrate is transported from the first processing chamber after the first wet process into the load lock chamber102prior to the second wet process. The processed first substrate and the processed second substrate may be further used in the manufacturing of a semiconductor structure or a semiconductor device.

The method is described for a purpose of illustrating concepts of the present disclosure, and the description is not intended to limit the present disclosure beyond what is explicitly recited in the claims. Additional operations can be provided before, during, and after the method described above and illustrated inFIG.7, and some operations described can be replaced, eliminated, or rearranged for additional embodiments of the method.

In some alternative embodiments, the first substrate or the second substrate may be transported from the load lock chamber102to the second processing chamber (e.g., the second chamber106) to perform a second wet process prior to the first wet process. For example, the first substrate and the second substrate may be subjected to a backside brushing procedure in the second chambers106-1and106-2. Thereafter, the first substrate and the second substrate are respectively transferred from the second chambers106-1and106-2to the first process chamber (e.g., the first chamber104) to perform a first wet process. For example, after the backside brushing procedure, the first substrate and the second substrate may be subjected to an SPM cleaning procedure. The first substrate and the second substrate are respectively transferred from the second chambers106-1and106-2to a single first chamber104-1to perform the first wet process. In some embodiments, after the first wet process, the first substrate and the second substrate are transferred from the first chamber104-1to second chambers106-3and106-zto perform another second wet process (e.g., soft spray cleaning).

In some alternative embodiments, the first substrate and the second substrate may be subjected to a series of first wet processes in the first chambers104followed by one or more second wet processes in the second chambers106. For example, the first substrate and the second substrate may be subjected to a first cleaning process (e.g., APM cleaning) in the first chamber104-1. After the first cleaning process in the first chamber104-1, the first substrate and the second substrate may be subjected to a second cleaning process (e.g., HPM cleaning) in the first chamber104-2. After the second cleaning process in the first chamber104-2, the first substrate and the second substrate may respectively be subjected to a third cleaning process (e.g., soft spray cleaning) in the second chambers106-1and106-2. After the third cleaning processes in the second chambers106-1and106-2, the first substrate and the second substrate may respectively be subjected to a fourth cleaning process (e.g., DHF cleaning) in a first chamber104-3(or104-y). Alternatively, the first substrate and the second substrate may be subjected to a series of second wet processes in the second chambers106followed by one or more first wet processes in the first chambers104.

The present disclosure provides embodiments of semiconductor structure manufacturing systems and methods for manufacturing a semiconductor structure. By integrating different processing chambers in the semiconductor structure manufacturing system, transportation time between different processing modules may be reduced. In addition, a footprint of the semiconductor structure manufacturing system may be reduced, thereby saving cleanroom space. Furthermore, by integrating the different processing chambers in the semiconductor structure manufacturing system, a yield of the semiconductor structure s may be improved due to in-situ processing procedure.

In accordance with some embodiments of the present disclosure, a system for wet processing is provided. The system includes a load lock chamber, a plurality of first chambers, a plurality of second chambers and a first robot. The load lock chamber is configured to store a plurality of wafers that are to be processed. The first chambers are configured to process the plurality of wafers. Each of the first chambers has a plurality of first stage plates for supporting the plurality of wafers. The second chambers are configured to process a single wafer of the plurality of wafers. Each of the second chambers has a second stage plate for supporting a wafer of the plurality of wafers. The first robot is configured to transport the plurality of wafers from the load lock chamber to the plurality of first chambers. The first robot is arranged between the plurality of first chambers, the plurality of second chambers and the load lock chamber.

In accordance with some embodiments of the present disclosure, a system for manufacturing a semiconductor structure is provided. The system includes a load port, a load lock chamber, a plurality of first chambers, a plurality of second chambers and a center robot. The load port is configured to accommodate a cassette for holding a plurality of substrates. The load lock chamber is configured to store the plurality of substrates. The load lock chamber is connected to a temperature control module. The first chambers are configured to process the plurality of substrates. Each of the second chambers is configured to process a single substrate of the plurality of substrates. The center robot is configured to transport the plurality of substrates from the load lock chamber to the plurality of first chambers. The plurality of first chambers are arranged on a first side of the center robot and the plurality of second chambers are arranged on a second side of the center robot.

In accordance with some embodiments of the present disclosure, a method of forming a semiconductor structure is provided. The method includes the following operations. A first substrate and a second substrate are transported from a load port into a load lock chamber. The first substrate and the second substrate are transported from the load lock chamber into a first processing chamber to perform a first wet process, wherein the first processing chamber has a plurality of first stage plates for supporting the first substrate and the second substrate. The first substrate is transported from the first processing chamber into a second processing chamber to perform a second wet process, wherein the second chamber has a second stage plate for supporting the first substrate. The first substrate is transported from the second processing chamber into the load lock chamber.