阅读说明：本技术 半导体处理设备 (Semiconductor processing equipment ) 是由 王祥 彭海 陈亮 胡兵 奚明 于 2019-09-20 设计创作，主要内容包括：本发明提供了一种半导体处理设备,包括管式沉积腔体、收容于所述管式沉积腔体的载片单元、气体供应单元和移动单元。所述载片单元的第一支撑端还包括旋转驱动单元,所述旋转驱动单元用于驱动所述载片单元在所述管式沉积腔体内旋转,使得所述载片单元无需多次进出所述管式沉积腔体内部就能够使两个所述待处理衬底中的任意一个或两个处于待镀状态,简化了工艺流程,提高了生产效率并降低了运营成本,避免了由于在所述管式沉积腔体外进行硅片的重复装片而影响良率的问题。(The invention provides semiconductor processing equipment which comprises a tubular deposition cavity, a slide glass unit accommodated in the tubular deposition cavity, a gas supply unit and a moving unit. The first supporting end of the slide glass unit further comprises a rotary driving unit, and the rotary driving unit is used for driving the slide glass unit to rotate in the tubular deposition cavity, so that the slide glass unit can enable any one or two of the two substrates to be processed to be in a to-be-plated state without entering and exiting the tubular deposition cavity for multiple times, the process flow is simplified, the production efficiency is improved, the operation cost is reduced, and the problem that the yield is influenced due to the fact that the silicon wafers are repeatedly loaded outside the tubular deposition cavity is solved.)

1. A semiconductor processing device comprises a tubular deposition cavity, a slide glass unit contained in the tubular deposition cavity, a gas supply unit and a moving unit, wherein the moving unit is used for moving the slide glass unit to enter and exit the tubular deposition cavity.

2. The semiconductor processing apparatus of claim 1, wherein the receiving portion comprises a first substrate carrying surface and a second substrate carrying surface that are disposed opposite to each other, each of the first substrate carrying surface and the second substrate carrying surface having a solid carrying area, the first substrate carrying surface carrying a first side of the substrate to be processed when the slide unit rotates to a first position, and the second substrate carrying surface carrying a second side of the substrate to be processed when the slide unit rotates to a second position.

3. The semiconductor processing apparatus of claim 1, wherein the semiconductor processing apparatus is a PECVD deposition apparatus, and the slide unit is movably connected to a plasma supply.

4. The semiconductor processing apparatus of claim 3, wherein the plasma supply source comprises a first electrode and a second electrode, wherein the first electrode and the second electrode are made of a metal conductive material, the first electrode and the second electrode extend and contract relative to the slide unit, and the first electrode and the second electrode form a positive electrode and a negative electrode;

when the rotary driving unit drives the slide unit to rotate, the first electrode and the second electrode are far away from the slide unit;

and after the slide glass unit rotates to the first position or the second position, the first electrode and the second electrode extend out and are connected with the slide glass unit so as to generate plasma in the tubular deposition cavity.

5. The semiconductor processing apparatus of claim 3, wherein the rotary drive unit comprises a rotary drive portion and an insulator, the rotary drive portion being coupled to and electrically insulated from the slide unit by the insulator.

6. The semiconductor processing apparatus of claim 1, wherein the tubular deposition chamber comprises a cylindrical portion and a first end surface and a second end surface disposed at two ends of the cylindrical portion, the first end surface comprises a first connecting portion for connecting to the first supporting end, and the second end surface comprises a second connecting portion for connecting to the second supporting end, so as to suspend the slide glass unit in the tubular deposition chamber.

7. The semiconductor processing apparatus of claim 5, wherein the rotational drive portion comprises a drive wheel and a driven wheel, the driven wheel being electrically insulated from the body portion and disposed at one end of the body portion, the drive wheel being remote from the slide element and driving the driven wheel to rotate.

8. The semiconductor processing apparatus of claim 7, wherein the first support end comprises a first connecting rod, one end of the first connecting rod is connected with the capstan, and the other end of the first connecting rod is connected with the first connecting portion.

9. The semiconductor processing apparatus of claim 8, wherein the rotary drive further comprises a support wheel coupled to the driven wheel, the first support end further comprising a second connecting rod, one end of the second connecting rod being coupled to the support wheel, the other end of the second connecting rod being coupled to the first coupling portion.

10. The semiconductor processing apparatus of claim 9, wherein the driving wheel and the driven wheel are each provided with a gear, the driving wheel drives the driven wheel to rotate, the driven wheel further has a smooth portion, and the support wheel has a smooth contact portion to contact the smooth portion to support the slide unit.

11. The semiconductor processing apparatus of claim 10, wherein the rotary drive unit further comprises an insulator disposed between the driven wheel and the body portion such that the driven wheel is not in electrical contact with the body portion.

12. The semiconductor processing apparatus of claim 10, wherein the first end face comprises a movable chamber door provided with an electrode extension that is of a bellows configuration to drive the first and second electrodes in extension and retraction movements.

13. The semiconductor processing apparatus of claim 12, wherein the body portion includes a first electrode contact post and a second electrode contact post, the first electrode contact post being electrically connected to the first substrate carrying surface of the receiving portion, the second electrode contact post being electrically connected to the second substrate carrying surface of the receiving portion.

14. The semiconductor processing apparatus of claim 13, wherein a rotary drive motor is disposed outside the tubular deposition chamber and electrically connected to the drive wheel to drive the drive wheel to rotate.

15. The semiconductor processing apparatus of claim 14, wherein a magnetic fluid seal is disposed between the moveable chamber door and the rotary drive motor.

16. The semiconductor processing apparatus of claim 8, wherein the driven wheel is made of a ceramic material having a heat resistance temperature of up to 400 degrees celsius.

17. The semiconductor processing apparatus of claim 6, wherein the cylindrical portion comprises an inner cylindrical wall, and when the slide unit is suspended and supported in the tubular cavity, a distance greater than or equal to 0.1mm is formed between the slide unit and the inner cylindrical wall, and no frictional resistance is formed between the slide unit and the inner cylindrical wall during rotation in the cylindrical portion.

18. The semiconductor processing apparatus of claim 17, wherein the slide unit is suspended from a central region of the tubular deposition chamber, the slide unit rotating along a central axis of the tubular deposition chamber.

Technical Field

The invention relates to the technical field of manufacturing of crystalline silicon solar cells, in particular to semiconductor processing equipment.

Background

The crystalline silicon Solar Cell is a leading product in the photovoltaic industry, and efficient cells such as a Passivated Emitter back field point contact Cell (PERC), a Passivated Emitter back contact Cell (PESC), a Passivated Emitter back local diffusion Cell (PERL) and the like have been developed at present by optimizing the production process and structure of the crystalline silicon Solar Cell, the photoelectric conversion efficiency can be close to 20% or even higher than 20%, and the crystalline silicon Solar Cell has a good application prospect.

With the breakthrough of the crystalline silicon solar cell in the photoelectric conversion efficiency, it is important to improve the productivity of the device and the yield of the product from the viewpoint of industrial application. In the PERC antireflection film deposition process in the prior art, a silicon wafer to be processed is generally mounted first, sent into a process chamber, cooled and taken out of the process chamber after antireflection layer deposition is performed on one surface of the silicon wafer, turned over and mounted again on the silicon wafer to be processed, and then sent into the process chamber to perform antireflection layer deposition on the other surface of the silicon wafer. In the process flow, the process flow is complicated by turning over and reloading the silicon wafer and carrying out temperature rise and fall treatment in the process cavity, and the production efficiency is not improved easily. More importantly, repeated mounting of the silicon wafer easily affects the yield of the product, and is not beneficial to improvement of photoelectric conversion efficiency.

Therefore, it is necessary to develop a new type of semiconductor processing apparatus to avoid the above-mentioned problems in the prior art.

Disclosure of Invention

The invention aims to provide semiconductor processing equipment to solve the problems that in the prior art, the production efficiency is not improved easily and the yield is influenced easily due to the fact that the process flow is complicated because silicon wafers are repeatedly mounted outside a process cavity.

In order to achieve the above object, the semiconductor processing apparatus of the present invention includes a tubular deposition chamber, a slide glass unit accommodated in the tubular deposition chamber, a gas supply unit, and a moving unit, wherein the moving unit is configured to move the slide glass unit into and out of the tubular deposition chamber, the slide glass unit includes a body portion, a plurality of accommodating portions formed on the body portion, and a first support end and a second support end located at two ends of the body portion, the accommodating portions are configured to accommodate a substrate to be processed, the first support end further includes a rotation driving unit, and the rotation driving unit is configured to drive the slide glass unit to rotate in the tubular deposition chamber.

The semiconductor processing equipment has the beneficial effects that: the first supporting end of the slide glass unit further comprises the rotary driving unit, and the rotary driving unit is used for driving the slide glass unit to rotate, so that the slide glass unit can enable any one or two of the two substrates to be processed to be in a state to be plated without entering and exiting the tubular deposition cavity for multiple times, the process flow is simplified, the production efficiency is improved, the operation cost is reduced, and the problem that the yield is influenced due to the fact that the silicon wafers are repeatedly loaded outside the tubular deposition cavity is solved.

Preferably, the accommodating portion is formed by enclosing a first substrate bearing surface and a second substrate bearing surface which are oppositely arranged on the body portion, and a third surface formed between the first substrate bearing surface and the second substrate bearing surface, the first substrate bearing surface and the second substrate bearing surface are both solid bearing areas, when the slide glass unit rotates to a first position, the first substrate bearing surface bears the first surface of the substrate to be processed, and when the slide glass unit rotates to a second position, the second substrate bearing surface bears the second surface of the substrate to be processed. The beneficial effects are that: in the process of rotating by the rotating driving unit, the to-be-processed substrate is switched between the first substrate bearing surface and the second substrate bearing surface, so that the slide glass unit can enable any one or two of the to-be-processed surfaces to be in a to-be-plated state without entering and exiting the tubular deposition cavity for multiple times.

Preferably, the semiconductor processing equipment is PECVD deposition equipment, and the slide glass unit is movably connected with a plasma supply power supply. The beneficial effects are that: making them suitable for PECVD applications.

Further preferably, the plasma supply source comprises a first electrode and a second electrode, the first electrode and the second electrode are made of metal conductive materials, the first electrode and the second electrode extend and retract relative to the slide unit, and when the rotary driving unit drives the slide unit to rotate, the first electrode and the second electrode are far away from the slide unit; and after the slide glass unit rotates to the first position or the second position, the first electrode and the second electrode extend out and are connected with the slide glass unit so as to generate plasma in the tubular deposition cavity. The beneficial effects are that: the slide glass unit can rotate smoothly without affecting the film coating treatment on the surface of the substrate to be treated.

Further preferably, the rotary driving unit comprises a rotary driving part and an insulating part, and the rotary driving part is connected with the slide glass unit through the insulating part and is electrically insulated from the slide glass unit. The beneficial effects are that: the film coating treatment on the surface of the substrate to be treated is not influenced.

Preferably, the tubular deposition cavity comprises a cylindrical portion, and a first end surface and a second end surface which are arranged at two ends of the cylindrical portion, the first end surface comprises a first connecting portion for connecting the first supporting end, and the second end surface comprises a second connecting portion for connecting the second supporting end, so that the slide glass unit is suspended and supported in the tubular deposition cavity. The beneficial effects are that: the slide glass unit can rotate smoothly.

Preferably, the driven wheel is electrically insulated from the slide glass unit and is arranged at one end of the body part, and the driving wheel is far away from the slide glass unit and drives the driven wheel to rotate. The beneficial effects are that: the driven wheel is electrically insulated from the slide glass unit and influences an electric field of the slide glass unit, and the driven wheel is arranged at one end of the body part so as to fully improve the space utilization efficiency in the tubular deposition cavity.

Preferably, the first supporting end comprises a first connecting rod, one end of the first connecting rod is connected with the driving wheel, and the other end of the first connecting rod is connected with the first connecting part.

Preferably, the rotation driving part further comprises a supporting wheel connected with the driven wheel, the first supporting end further comprises a second connecting rod, one end of the second connecting rod is connected with the supporting wheel, and the other end of the second connecting rod is connected with the first connecting part.

Preferably, the driving wheel and the driven wheel are respectively provided with a gear, the driving wheel drives the driven wheel to rotate, the driven wheel is further provided with a smooth part, and the supporting wheel is provided with a smooth contact part to be in contact with the smooth part to support the slide glass unit.

Preferably, the second support end includes a linkage portion, the linkage portion includes a first linkage portion and a second linkage portion that are disposed opposite to the support wheel and the driving wheel, the first linkage portion is connected to the second connection portion through a third connection rod that is located on the same horizontal line as the first connection rod, and the second linkage portion is connected to the second connection portion through a fourth connection rod that is located on the same horizontal line as the second connection rod.

Preferably, the rotary driving unit further includes an insulating member disposed between the driven wheel and the body portion, so that the driven wheel does not electrically contact with the body portion.

Preferably, the first end face comprises a movable cavity door, the movable cavity door is provided with an electrode telescopic part, and the electrode telescopic part is of a corrugated pipe structure so as to drive the first electrode and the second electrode to move in a telescopic mode. The beneficial effects are that: the telescopic movement of the first electrode and the second electrode avoids damage and friction to the first electrode and the second electrode during the rotation of the slide unit.

Preferably, the main body includes a first electrode contact post and a second electrode contact post, the first electrode contact post is electrically connected to the first substrate carrying surface of the accommodating portion, and the second electrode contact post is electrically connected to the second substrate carrying surface of the accommodating portion.

Preferably, a rotary driving motor is arranged outside the tubular deposition cavity and electrically connected with the driving wheel to drive the driving wheel to rotate.

Preferably, a magnetic fluid sealing device is arranged between the movable cavity door and the rotary driving motor.

Preferably, the driven wheel is made of a ceramic material with a heat-resistant temperature of more than 400 ℃.

The cylindrical part comprises a cylindrical inner wall, when the slide glass unit is suspended and supported in the tubular cavity, a distance larger than or equal to 0.1mm is formed between the slide glass unit and the cylindrical inner wall, and the slide glass unit does not form frictional resistance with the cylindrical inner wall in the rotating process of the cylindrical part.

Further preferably, the slide glass unit is suspended and supported in the central area of the tubular deposition cavity, and the slide glass unit rotates along the central axis of the tubular deposition cavity. The beneficial effects are that: minimizing the movement space range of the slide glass unit in the tubular deposition cavity so as to reduce the space size of the tubular deposition cavity.

Drawings

FIG. 1 is a schematic structural view of a semiconductor processing apparatus of the present invention;

FIG. 2 is a schematic structural view of the slide unit shown in FIG. 1;

FIG. 3a is a schematic view of the assembly structure of the slide glass unit and the tubular deposition chamber according to the present invention;

FIG. 3b is a schematic view of an assembly structure of the slide unit and the rotating part shown in FIG. 3 a;

FIG. 4a is a schematic view of a portion of the slide unit shown in FIG. 2;

fig. 4b is a schematic structural view of the receiving portion shown in fig. 4 a.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

In view of the problems of the prior art, an embodiment of the present invention provides a semiconductor processing apparatus including a tubular deposition chamber, a slide unit, a gas supply unit, and a moving unit.

FIG. 1 is a schematic block diagram of a semiconductor processing apparatus according to some embodiments of the present invention.

Referring to fig. 1, a semiconductor processing apparatus 1 includes a tubular deposition chamber 11, a slide unit 12, a gas supply unit 14, and a moving unit 13 for moving the slide unit 12 into the tubular deposition chamber 11.

Specifically, the moving unit 13 moves in a horizontal direction to move the slide unit 12 into or out of the tubular deposition chamber 11.

Specifically, the tubular deposition chamber 11 includes a cylindrical portion 113, and a first end surface 111 and a second end surface 112 disposed at two ends of the cylindrical portion 113.

Specifically, the gas supply unit 14 is disposed outside the tubular deposition chamber 11 to supply at least three gases to the interior of the tubular deposition chamber 11.

In some embodiments of the present invention, the gas supplied by the gas supply unit 14 at least comprises Silane (SiH)₄) Ammonia gas (NH)₃) And an inert gas.

In some embodiments of the present invention, the gas supplied by the gas supply unit 14 at least comprises SiH₄Dinitrogen monoxide (N)₂O) and an inert gas. The inert gas comprises nitrogen (N)₂) One or more of helium (He) or argon (Ar).

In some embodiments of the present invention, the semiconductor processing apparatus 1 is a PECVD deposition apparatus.

Fig. 2 is a schematic structural view of the slide unit shown in fig. 1.

Referring to fig. 2, the slide unit 12 includes a main body 121, a plurality of receiving portions 124 formed on the main body 121, and a first supporting end 122 and a second supporting end 123 at two ends of the main body 121, wherein the receiving portions 124 are used for receiving a substrate (not shown) to be processed.

In some embodiments of the present invention, the first support end 122 further comprises a rotational drive unit to drive the slide unit 12 to rotate.

Fig. 3a is a schematic view of an assembly structure of a slide unit and a tubular deposition chamber according to some embodiments of the present invention, and fig. 3b is a schematic view of an assembly structure of the slide unit and a rotating part shown in fig. 3 a.

Referring to fig. 2 and 3a, the slide glass unit 12 is accommodated in the tubular deposition chamber 11, and the first supporting end 122 further includes a rotating portion 31 to drive the slide glass unit 12 to rotate.

Referring to fig. 3a and 3b, the rotating portion 31 includes a driving wheel 311, a driven wheel 312, and a supporting wheel 313. The driven wheel 312 is fixedly connected to the first supporting end 122; the driving wheel 311 is arranged below one side of the driven wheel 312 and is connected with one end of a first connecting rod 331; the supporting wheel 313 is disposed opposite to the driving wheel 311 on the other side of the driven wheel 312.

Referring to fig. 3a, the exterior of the tubular deposition chamber 11 is provided with a rotary drive motor 36. The first end surface 111 includes a movable chamber door 114, and the rotary driving motor 36 is disposed outside the movable chamber door 114 to drive the driving wheel 311 to rotate by driving the first connecting rod 331.

Further, referring to fig. 1 and 3a, a first connecting portion (not shown) is disposed on a surface of the movable chamber door 114 facing the first supporting end 122 to connect with the other end of the first connecting rod 331, and the slide unit 12 is supported by the first connecting rod 331. One end of the second connecting rod 332 is connected to the supporting wheel 313, and the other end is connected to the first connecting portion (not shown) to support the slide unit 12.

In some embodiments of the present invention, the driving wheel 311 and the driven wheel 312 are both provided with gears, so that the driving wheel 311 drives the driven wheel 312 to rotate in a meshing transmission manner.

In other embodiments of the present invention, the transmission mode between the driving wheel 311 and the driven wheel 312 is any one or more of gear transmission, chain transmission, friction transmission, belt transmission and magnetic transmission.

In some embodiments of the invention, the driven wheel 312 further comprises a smooth portion (not shown), and the support wheel 313 has a smooth contact portion (not shown) for contacting the smooth portion (not shown) of the driven wheel 312 to support the slide unit 12.

In other embodiments of the present invention, the transmission between the driven wheel 312 and the supporting wheel 313 may be any one or more of gear transmission, chain transmission, friction transmission, belt transmission and magnetic transmission.

In some embodiments of the invention, the driven wheel 312 is integral with the slide unit 12.

In some embodiments of the present invention, the driven wheel 312 is made of a ceramic material with a heat resistant temperature of 400 degrees celsius or higher.

Further, referring to fig. 3a, the second support end 123 includes an interlocking portion 32, a second connecting portion (not shown) is disposed on a surface of the second end surface 112 facing the interlocking portion 32, the interlocking portion 32 includes a first interlocking portion (not shown) and a second interlocking portion (not shown) disposed opposite to the support wheel 313 and the driving wheel 311, the first interlocking portion (not shown) is connected to the second connecting portion (not shown) by a third connecting rod (not shown) located at the same horizontal line as the first connecting rod 331, and the second interlocking portion (not shown) is connected to the second connecting portion (not shown) by a fourth connecting rod (not shown) located at the same horizontal line as the second connecting rod 332. The first connecting rod 331, the second connecting rod 332, the third connecting rod (not shown) and the fourth connecting rod (not shown) suspend the slide unit 12 in the tubular deposition chamber 11.

Specifically, referring to fig. 1 and 3a, when the slide glass unit 12 is suspended and supported in the tubular deposition cavity 11, a distance between an outer surface of the slide glass unit 12 and an inner wall of the cylindrical portion 113 is greater than or equal to 0.1mm, and no frictional resistance is formed between the slide glass unit 12 and the inner wall of the cylindrical portion 113 in the rotating process of the cylindrical portion 113. In some more preferred embodiments of the present invention, the slide unit 12 is suspended in the central region of the tubular deposition chamber 11, and the slide unit 12 rotates along the central axis of the tubular deposition chamber 11, so as to minimize the volume range of the rotational movement of the slide unit 12, improve the space utilization rate in the tubular deposition chamber 11, and reduce the floor area of the tubular deposition chamber 11.

In some embodiments of the invention, the rotary drive unit further comprises an insulator. Referring to fig. 2 and 3b, the insulating member (not labeled) is disposed between the driven wheel 312 and the main body 121, so that the driven wheel 312 is not in electrical contact with the main body 121.

Referring to fig. 3a and 3b, a plasma supply source 34 is disposed outside the tubular deposition chamber 11, and the plasma supply source 34 includes a first electrode (not shown) and a second electrode (not shown) to be electrically connected to a first electrode interface 1223 and a second electrode interface 1224, respectively, disposed on the slide glass unit 12.

The movable chamber door 114 is provided with a first electrode telescopic part 371 and a second electrode telescopic part 372, and the first electrode telescopic part 371 and the second electrode telescopic part 372 are respectively electrically connected with the first electrode (not shown in the figure) and the second electrode (not shown in the figure). The carrier unit 12 is used for disposing the first electrode interface 1223 and the first electrode contact column 1221 of the second electrode interface 1224 opposite to the second electrode contact column 1222, and is made of a conductive material. The first electrode contact column 1221 and the second electrode contact column 1222 are respectively and fixedly connected with a plurality of graphite boat pieces (not marked in the figure), and the adjacent graphite boat pieces (not marked in the figure) are respectively and fixedly connected with the first electrode contact column 1221 and the second electrode contact column 1222 so as to form a plasma electric field at the adjacent graphite boat pieces (not marked in the figure), thereby avoiding the problem of poor contact between the first electrode contact column 1221 and the second electrode contact column 1222 after the graphite boat pieces (not marked in the figure) expand with heat and contract with cold due to the temperature change in the tubular deposition cavity 11.

In some embodiments of the present invention, the first electrode expansion part 371 and the second electrode expansion part 372 are both of a bellows structure to drive the first electrode (not shown) and the second electrode (not shown) to perform an expansion and contraction motion.

In some embodiments of the present invention, the first electrode (not shown) and the second electrode (not shown) form a positive electrode and a negative electrode.

The material of the first electrode (not shown) and the second electrode (not shown) is a metal conductive material.

When the slide glass unit 12 needs to be rotated, the supply of the plasma generation power source in the tubular deposition chamber 11 is firstly interrupted, that is, the first electrode telescopic part 371 and the second electrode telescopic part 372 are driven to move away from the rotating part 31 so as to enable the first electrode (not marked in the figure) and the second electrode (not marked in the figure) to be respectively connected with the first electrode interface 1223 and the second electrode interface 1224 in a disconnected conductive manner, and then the slide glass unit 12 is driven to rotate by the rotating part 31.

When the slide glass unit 12 is rotated, the first electrode stretching part 371 and the second electrode stretching part 372 are first driven to move towards the rotating part 31, so that the first electrode (not shown) and the second electrode (not shown) are respectively in conductive connection with the first electrode interface 1223 and the second electrode interface 1224, and then the plasma generation power supply in the tubular deposition chamber 11 is switched on, so as to perform a plating process on a substrate to be processed (not shown) in the slide glass unit 12.

The outside of the tubular deposition chamber 11 is provided with a vacuum pump 38. Specifically, the vacuum pump 38 penetrates the movable chamber door 114 through a gas passage 381 to communicate with the inside of the tubular deposition chamber 11. The vacuum pump 38 is used to control the vacuum degree in the tubular deposition chamber 11.

And a magnetic fluid sealing device 35 is arranged outside the tubular deposition cavity 11. Specifically, the magnetic fluid sealing device 35 is disposed between the movable chamber door 114 and the rotary driving motor 36 to further enhance the sealing performance of the movable chamber door 114.

Fig. 4a is a partial structural schematic view of the slide unit shown in fig. 2. Fig. 4b is a schematic structural view of the receiving portion shown in fig. 4 a.

Referring to fig. 2 and 4a, the body part 121 includes a plurality of graphite boat pieces 125 and a plurality of insulation barrier rods 126.

In some embodiments of the present invention, a plurality of the graphite boat pieces 125 are parallel to each other, and a plurality of the insulation barrier bars 126 are parallel to each other. The insulation blocking rod 126 penetrates through the graphite boat piece 125 and is perpendicular to the graphite boat piece 125, so as to block the substrate 127 to be processed in the accommodating portion 124, and prevent the substrate 127 to be processed from being thrown out in the rotating process.

Referring to fig. 4a and 4b, the receiving portion 124 is defined by a first substrate carrying surface 1241, a second substrate carrying surface 1242, and a third surface (not labeled) formed between the first substrate carrying surface 1241 and the second substrate carrying surface 1242, where the first substrate carrying surface 1241 and the second substrate carrying surface 1242 are both solid carrying areas. The substrate 127 to be processed includes a first surface 1271 and a second surface 1272 which are parallel to each other.

When the slide unit 12 rotates to the first position, the first substrate carrying surface 1241 is located right below the second substrate carrying surface 1242, and the first substrate carrying surface 1241 carries the first surface 1271 of the substrate 127 to be processed and completely adheres to the first surface 1271, so as to protect the first surface 1271 from receiving a deposition coating.

When the slide unit 12 rotates to the second position, the first substrate carrying surface 1241 is located right above the second substrate carrying surface 1242, and the second substrate carrying surface 1242 carries the second surface 1272 of the substrate 127 to be processed and completely adheres to the second surface 1272, so as to protect the second surface 1272 from receiving a deposition coating.

In some embodiments of the present invention, the first electrode contact post 1221 and the second electrode contact post 1222 are electrically connected to the first substrate carrying surface 1241 and the second substrate carrying surface 1242 of the receiving portion 124, respectively.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.