CN214400713U

CN214400713U - ALD processing equipment

Info

Publication number: CN214400713U
Application number: CN202120163712.0U
Authority: CN
Inventors: 万军; 王辉; 廖海涛; 王斌
Original assignee: Wuxi Yijing Semiconductor Technology Co ltd
Current assignee: Wuxi Yiwen Microelectronics Technology Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-10-15
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to an ALD processing equipment. The reactor of the processing equipment comprises a vacuum chamber and a reaction chamber, the reaction chamber is arranged in the vacuum chamber, the top of the reaction chamber is open, an air inlet channel and an air outlet channel are formed in the bottom of the reaction chamber, a first material port is formed in the side face of the vacuum chamber, an output end of a lifting device is provided with a sealing cover capable of sealing the top of the reaction chamber, a gripping device is arranged on the sealing cover and used for gripping a base body conveyed into the vacuum chamber, the feeding chamber is arranged on the outer side of the reactor and provided with a second material port and a third material port, the second material port is communicated with the first material port, a first sealing door capable of being opened is arranged between the second material port and the first material port, a second sealing door capable of opening and closing the third material port is arranged on the feeding chamber, and a conveying device used for conveying the base body into the vacuum chamber is arranged in the feeding chamber. The utility model discloses can guarantee the shaping quality and the uniformity of deposit membrane.

Description

ALD processing equipment

Technical Field

The utility model relates to a semiconductor nano-film deposition technology field, in particular to ALD processing equipment.

Background

With the increasing complexity of ICs, the characteristic dimensions of mosfet devices in silicon-based semiconductor integrated circuits will reach the nanometer scale according to the well-known moore's law and the international roadmap for semiconductor technology development published by the international association in the semiconductor industry. Atomic Layer Deposition (ALD) has the characteristics of excellent three-dimensional conformality, large-area uniformity, accurate sub-monolayer film thickness control and the like, and is favored by the microelectronic industry and the nano-technology field.

In the prior art, the atomic layer deposition processing has the technical scheme that: the substrate is placed in a sealed reactor and a vapor phase precursor source is alternately introduced into the reactor to chemisorb and react to form a deposited film on the substrate.

In implementing the technical solution of the present invention, the applicant finds that there are at least the following disadvantages in the prior art:

in the prior art, the technical scheme that the gas-phase precursor source is alternately and impulsively introduced into the reactor is difficult to ensure that the precursor source covers the whole matrix completely, pinholes are easy to form and the like, so that the precursor source is not uniformly contacted with the matrix, the uniformity of a deposited film is poor, the quality is difficult to ensure, and meanwhile, due to incomplete reaction, the large amount of the precursor source is filled, so that the precursor source is greatly remained, the film forming efficiency is low, the period is long, and the waste of the precursor source is caused.

Therefore, improvements in the prior art are needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ALD processing equipment and processing method has solved or partially has solved among the prior art homogeneity of deposit membrane poor, and the quality is difficult to guarantee, and the filming inefficiency, and the cycle length causes the technical problem of the waste of precursor source.

The technical scheme of the utility model is that:

in one aspect, the present invention provides an ALD processing apparatus, the processing apparatus comprising:

the reactor comprises a vacuum chamber and a reaction chamber, the reaction chamber is arranged in the vacuum chamber, the top of the reaction chamber is open, the bottom of the reaction chamber is provided with an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are arranged oppositely by using the central line of the bottom of the reaction chamber, and the side surface of the vacuum chamber is provided with a first material port;

the lifting device is arranged on the reactor, the output end of the lifting device stretches vertically, and a sealing cover is arranged on the output end of the lifting device and can be used for sealing the top of the reaction chamber in an operable manner;

the grabbing device is arranged on the sealing cover and used for grabbing the substrate conveyed into the vacuum chamber;

the feeding cavity is arranged on the outer side of the reactor and provided with a second material opening and a third material opening, the second material opening is communicated with the first material opening, an openable first sealing door is arranged between the second material opening and the first material opening, the feeding cavity is provided with a second sealing door capable of opening and closing the third material opening, and a conveying device used for conveying the base body to the inside of the vacuum cavity is arranged in the feeding cavity.

Furthermore, the air inlet channels are in a hole shape, the number of the air inlet channels is multiple, and the multiple air inlet channels are arranged on one side of the bottom of the reaction chamber;

the gas outlet channel is porous, the gas outlet channel is also provided with a plurality of gas outlet channels, and the gas outlet channels are arranged on the other side of the bottom of the reaction chamber.

Furthermore, the air inlet channels are provided with a plurality of groups, the air inlet channels are sequentially arranged, each air inlet channel is arc-shaped, and the aperture of each air inlet channel is sequentially reduced towards the direction close to the central line of the bottom of the reaction chamber;

the air outlet channel is provided with a plurality of groups, the air outlet channels are arranged in sequence, each group of air outlet channels is arc-shaped, and each group of air outlet channels is close to the hole diameter direction of the central line of the bottom of the reaction chamber in sequence.

Furthermore, two gas homogenizing plates are arranged in the reaction chamber, the two gas homogenizing plates are arranged oppositely to the central line of the bottom of the reaction chamber, the two gas homogenizing plates are arranged between the gas inlet channel and the gas outlet channel, the reaction chamber is divided into the gas inlet chamber, the reaction chamber and the gas outlet chamber by the two gas homogenizing plates, and each gas homogenizing plate is provided with a plurality of through holes.

Further, the fixed transfer cavity that is provided with in reaction cavity's bottom, the top of transfer cavity is uncovered, reaction cavity's bottom covers on the top of transfer cavity, be provided with two baffles in the transfer cavity, two the baffle will the transfer cavity is split into first cavity, second cavity and third cavity, inlet channel with first cavity intercommunication, outlet channel with third cavity intercommunication, the bottom of first cavity is provided with the main hole of admitting air, the bottom of third cavity is provided with the main hole of giving vent to anger.

Further, the processing equipment further comprises:

a first heater disposed on top of the lid, an output of the first heater acting on the lid;

a second heater disposed between an outer sidewall of the reaction chamber and an inner sidewall of the vacuum chamber, an output of the second heater acting on the sidewall of the reaction chamber;

a third heater disposed between the bottom of the reaction chamber and the bottom of the vacuum chamber, the third heater acting on the bottom of the reaction chamber.

Furthermore, the processing equipment also comprises a first heat reflection assembly, a second heat reflection assembly and a third heat reflection assembly,

wherein:

the first heat reflecting assembly is disposed between the first heater and the top of the vacuum chamber;

the second heat reflecting assembly is disposed between the second heater and a side of the vacuum chamber;

the third heat reflecting assembly is disposed between the third heater and the bottom of the vacuum chamber.

Preferably, the first heat reflection assembly, the second heat reflection assembly and the third heat reflection assembly each include a plurality of heat reflection plates arranged in sequence, and the contact form of two adjacent heat reflection plates is a multi-point contact.

Further, a vacuumizing hole is formed in the feeding cavity.

In another aspect, the present invention also provides an ALD processing method, which is performed in the ALD processing apparatus, the processing method comprising:

operating a first sealing door to enable the first sealing door to seal the second material opening;

providing a substrate, and placing the provided substrate on a conveying device;

operating a second sealing door to enable the second sealing door to seal the third material opening and enable the feeding cavity to be arranged in a sealing mode;

vacuumizing the feeding cavity which is arranged in a sealing manner;

operating the first sealing door to open the second material opening;

operating a conveying device, pushing the substrate into a vacuum chamber, transferring the substrate to the grabbing device, and returning the conveying device;

operating the lifting mechanism, covering the sealing cover on the top of the reaction chamber, and positioning the substrate in the sealed reaction chamber;

injecting a precursor source from an air inlet channel of the reaction chamber, and after the precursor source sweeps the substrate in the reaction chamber, discharging the substrate from an air outlet channel of the reaction chamber to carry out ALD processing on the substrate;

operating the lifting mechanism to return the sealing cover;

operating the conveying device to transfer the processed matrix into the feeding chamber;

and operating the second sealing door to open the third material port and transfer the processed matrix to the outside of the feeding cavity.

The utility model provides a one or more technical scheme has following technological effect or advantage at least:

in the utility model, because the precursor source is injected into the reaction chamber from the air inlet channel of the reaction chamber and is discharged from the air outlet channel of the reaction chamber, because the air inlet channel and the air outlet channel are arranged relatively by the central line of the bottom of the reaction chamber, therefore, the fluid field in the reaction chamber is laminar flow, and the air inlet and the air exhaust of the precursor source are directly communicated with the reaction chamber, thereby avoiding the risk of the precursor source leaking at the butt joint, and the precursor source flows in the reaction chamber, not only the volume of the reaction chamber can be reduced, but also the length of uniform air is increased, the uniformity of air flow is improved, so as to reduce the phenomenon of the random air, the precursor source can be ensured to completely cover the whole base body, the contact between the precursor source and the base body is uniform, the uniformity of the deposited film is improved, so as to ensure the forming quality and the uniformity of the deposited film, the film forming efficiency is high, the period is short, the utilization rate of the precursor source is improved, is suitable for batch production and has good practical value.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of an ALD process apparatus disclosed in example 1;

FIG. 2 is a schematic structural diagram of a vacuum chamber of the present embodiment;

FIG. 3 is a schematic structural diagram of a reaction chamber according to the present embodiment;

FIG. 4 is a schematic top view of the reaction chamber of the present embodiment;

FIG. 5 is a schematic structural view of a reaction chamber according to example 3;

FIG. 6 is a schematic cross-sectional view of a reactor;

FIG. 7 is a schematic view of the structural arrangement of the grasping apparatus of the present embodiment;

FIG. 8 is a schematic flow chart illustrating an ALD process of the present embodiment;

FIG. 9 is a schematic view of a state where a substrate is in a reaction chamber.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1:

the embodiment discloses an ALD processing apparatus.

Fig. 1 is a schematic structural diagram of an ALD processing apparatus disclosed in embodiment 1, and in conjunction with fig. 1, the ALD processing apparatus of this embodiment includes a reactor a, a lifting device b, a gripping device c, and a feeding chamber d.

Referring to fig. 1, a reactor a of the present embodiment includes a vacuum chamber 1 and a reaction chamber 2, the reaction chamber 2 is disposed in the vacuum chamber 1, fig. 2 is a schematic structural diagram of the vacuum chamber of the present embodiment, fig. 3 is a schematic structural diagram of the reaction chamber of the present embodiment, and referring to fig. 1 to fig. 3, the reaction chamber 2 of the present embodiment has an open top, and a first material port 3 is disposed on a side surface of the vacuum chamber 1.

Referring to fig. 1, the lifting device b of the present embodiment is disposed on the reactor a, the output end of the lifting device c extends and retracts vertically, and the output end of the lifting device c is disposed with a sealing cover 4, the sealing cover 4 is operable to seal the top of the reaction chamber 2, so that the reaction chamber 2 forms a sealed cavity.

With reference to fig. 1, a gripping device c of this embodiment is provided on the cover 4, which gripping device c is used to grip the substrate transported into the vacuum chamber 1.

Referring to fig. 1, a feeding chamber d of this embodiment is disposed outside a reactor a, the feeding chamber d is provided with a second material opening and a third material opening, the second material opening is communicated with the first material opening 3, an openable first sealing door 5 is disposed between the second material opening and the first material opening 3, a second sealing door 6 capable of opening and closing the third material opening is disposed on the feeding chamber d, and a conveying device 7 for conveying a substrate into a vacuum chamber 1 is disposed in the feeding chamber d, so that the substrate can be transferred into the feeding chamber through the opened second material opening, and the feeding chamber d is sealed by operating the first sealing door 5 and the second sealing door 6, so as to evacuate the feeding chamber d, and thus the feeding chamber d in which the substrate is mounted is in a vacuum state.

When implementing, open the third material mouth earlier, the second material mouth is closed, place the base member through the third material mouth on conveyor 7 after, close the third material mouth through second sealing door 6, will be in sealing state's pay-off cavity evacuation, open the second material mouth afterwards, through operation conveyor 7, carry the base member to vacuum chamber 1 in, and transfer to grabbing device c on, then operation elevating gear c, drive closing cap 4 and shift down, through closing cap 4 with 2 top sealings of reaction chamber, so that reaction chamber 2 forms a seal chamber, the base member is located reaction chamber 2 promptly, with the ALD processing of waiting to carry out the base member. After the base member finishes processing, operation elevating gear c return to in transferring the base member that finishes processing to pay-off cavity d through operation conveyor 7, close the second material mouth through operating first sealing door 5 afterwards, open the third material mouth again, with the base member that finishes processing to pay-off cavity d outside, carry out the processing of next base member.

This embodiment need not carry out the evacuation to the reactor and deals with, and only carries out the evacuation to the pay-off cavity, and in the in-service use, the volume of pay-off cavity is less than the volume of reactor, can improve the speed of evacuation like this, improves the machining efficiency of the ALD of base member, and in addition, in whole operation process, the reactor all is in vacuum state, can also further improve the vacuum purity in the reaction chamber of reactor, improves the processingquality of ALD of base member.

Example 2:

this example provides a reaction chamber suitable for use in the ALD processing apparatus of example 1.

Fig. 4 is a schematic structural diagram of the reaction chamber of the present embodiment, and with reference to fig. 3 and 4, a gas inlet channel 8 and a gas outlet channel 9 are formed at the bottom of the reaction chamber 2 of the present embodiment, and the gas inlet channel 8 and the gas outlet channel 9 are disposed opposite to each other with respect to a center line of the bottom of the reaction chamber 2.

In the embodiment, the precursor source is injected into the reaction chamber 2 from the gas inlet channel 8 of the reaction chamber 2 and is discharged from the gas outlet channel 9 of the reaction chamber 2, because the gas inlet channel 8 and the gas outlet channel 9 are oppositely arranged by the central line of the bottom of the reaction chamber 2, the fluid field in the reaction chamber 2 is laminar, and the gas inlet and the gas exhaust of the precursor source are directly communicated with the reaction chamber, thereby avoiding the risk of the precursor source leaking at the butt joint part, in addition, the flowing direction of the precursor source in the reaction chamber 2 not only can reduce the volume of the reaction chamber, but also can increase the length of uniform gas, improve the uniformity of gas flow, reduce the phenomenon of gas disorder, ensure that the precursor source can fully cover the whole substrate, ensure that the precursor source is uniformly contacted with the substrate, improve the uniformity of the deposited film, ensure the forming quality and the uniformity of the deposited film, and have high film forming efficiency, the period is short, the utilization rate of the precursor source is improved, and the method is suitable for batch production and has good practical value.

Referring to fig. 4, the gas inlet channel 8 in this embodiment is porous, the gas inlet channels 8 are provided in plural, the gas inlet channels 8 are provided on one side of the bottom of the reaction chamber 2, correspondingly, the gas outlet channels 9 are also porous, the gas outlet channels 9 are also provided in plural, and the gas outlet channels 9 are provided on the other side of the bottom of the reaction chamber 2.

Further, combine fig. 4, the inlet channel 8 of this embodiment is provided with the multiunit, multiunit inlet channel 8 sets gradually, every inlet channel 8 of group all is the arc, the aperture of each inlet channel 8 of every inlet channel 8 of group reduces to the direction of the central line of the bottom that is close to reaction chamber 2 in proper order, correspondingly, outlet channel 9 is provided with the multiunit, multiunit outlet channel 9 sets gradually, every outlet channel 9 of group all is the arc, the aperture of each inlet channel 4 of every outlet channel 9 of group reduces to the direction of the central line of the bottom that is close to reaction chamber 2 in proper order, can further improve the homogeneity that precursor source purged to the base member like this, improve the shaping quality of sedimentary membrane.

Of course, the inlet channels 8 and the outlet channels 9 in this embodiment may also have other shapes, such as a strip shape and a square shape, on the premise of the strip shape, the inlet channels 8 are provided in plural, the inlet channels 8 are provided at one side of the bottom of the reaction chamber 2, the outlet channels 9 are also provided in plural, the outlet channels 9 are provided at the other side of the bottom of the reaction chamber 2, and in order to ensure the purging uniformity, the sizes of the inlet channels 8 in this embodiment are sequentially reduced toward the direction close to the center line of the bottom of the reaction chamber 2, and the sizes of the outlet channels 9 are sequentially reduced toward the direction close to the center line of the bottom of the reaction chamber 2.

Example 3:

this example provides a reaction chamber suitable for use in the ALD processing apparatus of examples 1 or 2.

Fig. 5 is a schematic structural diagram of a reaction chamber in example 3, and the reaction chamber in this example is different from the reaction chamber in example 2 in that: two even gas plates 10 are arranged in the reaction chamber 2, the two even gas plates 10 are arranged oppositely by the central line of the bottom of the reaction chamber 2, the two even gas plates 10 are arranged between the gas inlet channel 8 and the gas outlet channel 9, the reaction chamber is divided into the gas inlet chamber, the reaction chamber and the gas outlet chamber by the two even gas plates 10, and a plurality of through holes are arranged on each even gas plate 10.

The precursor source can enter the air inlet cavity through the air inlet channel 8, then enter the reaction cavity through the gas homogenizing plate 10 on the same side of the air inlet cavity, purge the matrix, then be discharged into the air outlet cavity through the gas homogenizing plate 10 on the same side of the air outlet cavity, and be discharged through the air outlet channel 9, and the two gas homogenizing plates 10 can further improve the flowing uniformity of the precursor source.

In addition, in the embodiment, the central axes of the through holes on the two gas uniform plates 10 can be obliquely arranged, so that a symmetrical splayed shape can be formed, and the purging effect is better.

Example 4:

this example provides a reaction chamber suitable for use in the ALD process apparatus of examples 1-3.

Fig. 6 is a schematic cross-sectional view of the reactor of this embodiment, with reference to fig. 3 and 6, in this embodiment, a transfer chamber 11 is fixedly disposed at the bottom of a reaction chamber 2, a top of the transfer chamber 11 is open, the bottom of the reaction chamber 2 covers the top of the transfer chamber 11, so that the transfer chamber 11 forms a sealed cavity, two partition plates 12 are disposed in the transfer chamber 11, the transfer chamber 11 is divided into a first chamber 1101, a second chamber 1102 and a third chamber 1103 by the two partition plates 12, an air inlet channel 8 is communicated with the first chamber 1101, an air outlet channel 9 is communicated with the third chamber 1103, an air inlet main hole 13 is disposed at the bottom of the first chamber 1101, and an air outlet main hole 14 is disposed at the bottom of the third chamber 1103.

In specific implementation, the gas inlet device may inject the precursor source into the first chamber 1101 through the gas inlet main hole 13, and then transfer the precursor source into the reaction chamber 2 through the first chamber 1101, and after purging the precursor source in the reaction chamber 2, the precursor source enters the third chamber 1103 to transfer to the gas outlet main hole 14, and is led out through the gas exhaust device, so that the gas homogenizing time of the precursor source may be increased, and the purging efficiency may be improved.

In this embodiment, the top cross-sections of the first chamber 1101 and the third chamber 1103 may be fan-shaped, but it is not limited thereto, and the second chamber 1102 may be solid, which improves the strength of the transfer chamber 11.

Further, referring to fig. 3 and fig. 6, in this embodiment, two partition plates 12 are disposed between the gas inlet channel 8 and the gas outlet channel 9, the gas inlet main hole 13 is disposed between the gas inlet channel 8 and the partition plate 12 on the same side, the gas outlet main hole 14 is disposed between the gas outlet channel 9 and the partition plate 12 on the same side, and the gas inlet main hole 13 and the gas outlet main hole 14 are disposed opposite to each other along a center line of the bottom of the reaction chamber 2, that is, a distance between the gas inlet main hole 13 and the gas outlet main hole 14 in this embodiment is smaller than a distance between the gas inlet channel 8 and the gas outlet channel 9, so that the gas homogenizing time of the precursor source can be further increased, and the purging efficiency can be improved.

Example 5:

this embodiment is applicable to the ALD process apparatuses of embodiments 1-4.

Referring to fig. 1, the processing apparatus of the present embodiment further includes a first heater 15, a second heater 16, and a third heater 17, the first heater 15 is disposed on the top of the cover 5, an output end of the first heater 15 acts on the cover 5, the second heater 16 is disposed between the outer sidewall of the reaction chamber 2 and the inner sidewall of the vacuum chamber 1, an output end of the second heater 16 acts on the sidewall of the reaction chamber 2, the third heater 17 is disposed between the bottom of the reaction chamber 2 and the bottom of the vacuum chamber 1, and the third heater 17 acts on the bottom of the reaction chamber 2.

In this embodiment, since the output end of the first heater 15 acts on the cover 5, the output end of the second heater 16 acts on the sidewall of the reaction chamber 2, and the third heater 17 acts on the bottom of the reaction chamber 2, independent radiation heating and temperature control of the top, side, and bottom regions of the reaction chamber 2 can be achieved, and a uniform temperature field is formed in a large space, so that the heating temperature of the precursor source is rapidly raised to the required temperature, and the heating efficiency is high.

Referring to fig. 1, in this embodiment, a first mounting plate 18 is fixedly disposed on the top of the sealing cover 5, the first heater 15 includes a plurality of first heating wires, the plurality of first heating wires are concentrically arranged in a corrugated manner, and the plurality of first heating wires are all fixed on the bottom surface of the first mounting plate 18.

Further, referring to fig. 1, in this embodiment, the outer edge of the first mounting plate 18 is bent downward to form a first limiting rib, and the first limiting rib can limit the heating direction of the first heater 15 to a certain extent, so as to further improve the heating efficiency of the first heater 15.

Referring to fig. 1, the processing apparatus of the present embodiment further includes a first heat reflection assembly 19 disposed between the first heating assembly 15 and the top of the vacuum chamber 1, the first heat reflection assembly 19 may be fixedly disposed on the top surface of the first mounting plate 18, and the first heat reflection assembly 19 is used for reflecting heat generated by the first heater 15 during operation to the cover 5, so as to further increase the heating rate of the precursor source.

Combine fig. 1, in this embodiment, be provided with second mounting panel 20 between reaction chamber 2's the lateral wall and the inside wall of vacuum chamber 1, the global both ends of second mounting panel 20 are the closed loop, second mounting panel 20 is fixed to be set up on the top surface of the bottom of vacuum chamber 1, second heater 16 includes a plurality of second heater strips, every second heater strip all is coaxial cyclic annular setting, every second heater strip sets up on the inside wall of second mounting panel 20 along vertical fixed, every second heater strip all suits on reaction chamber 2's lateral wall, with the lateral wall to reaction chamber 2 heats.

Further, referring to fig. 1, in this embodiment, both ends of the second mounting plate 20 are flanged inward to form a second limiting rib, and the second limiting rib can limit the heating direction of the second heater 16 to a certain extent, so as to further improve the heating efficiency of the second heater 16.

With reference to fig. 1, the processing apparatus of the present embodiment further includes a second heat reflection assembly 21, the second heat reflection assembly 21 is disposed between the second heater 16 and the inner wall of the vacuum chamber 1, the second heat reflection assembly 21 may be fixedly disposed on an outer side surface of the second mounting plate 20, and the second heat reflection assembly 21 is configured to reflect heat generated by the second heater 16 during operation to the side wall of the reaction chamber 2, so as to further increase the heating rate of the precursor source.

Referring to fig. 1, in the present embodiment, a third mounting plate 22 is disposed between the bottom of the reaction chamber 2 and the bottom of the vacuum chamber 1, the third heater 17 includes a plurality of third heating wires, the plurality of third heating wires are concentrically arranged in a corrugated manner, and the plurality of third heating wires are all fixed on the top surface of the third mounting plate 22.

Further, referring to fig. 1, in this embodiment, the outer edge of the third mounting plate 22 is bent upward to form a third limiting rib, and the third limiting rib can limit the heating direction of the third heater 17 to a certain extent, so as to further improve the heating efficiency of the third heater 17.

Further, referring to fig. 1, the processing apparatus in this embodiment further includes a third heat reflection assembly 23, the third heat reflection assembly 23 is disposed between the bottom of the reaction chamber 2 and the bottom of the vacuum chamber 1, and can be fixedly disposed on the bottom surface of the third mounting plate 22, and the third heat reflection assembly 23 is used for reflecting heat generated by the third heater 17 during operation onto the bottom of the reaction chamber 2, so as to further increase the heating rate of the precursor source.

In this embodiment, the first heat reflection assembly 19 and the second heat reflection assembly 21 and the third heat reflection assembly 23 may each include a plurality of heat reflection plates sequentially arranged, and the contact form of two adjacent heat reflection plates is multi-point contact, which has the characteristics of high heat reflection efficiency, energy saving, and uniformity of temperature field improvement.

Further, the thickness of each heat reflection plate of the present embodiment may be 0.04-1mm, and the distance between every two adjacent heat reflection plates is 0.05-0.1mm, so as to reduce the size of the space.

This embodiment utilizes the heating direction that each heat reflection assembly can restrict the heater that corresponds, only heats reaction chamber 2 like this, and vacuum chamber 1's temperature can keep the normal atmospheric temperature, need not adopt cooling facilities such as water-cooling to cool down vacuum chamber 1 to retrench the structure, have fine practicality.

Example 6:

this embodiment is applicable to the ALD process apparatuses of embodiments 1-5.

Referring to fig. 1, in this embodiment, the edge of the bottom of the cover 5 may be provided with a stop, and the top opening of the reaction chamber 2 is provided with a boss, and when the cover 5 seals the top opening of the reaction chamber 2, the boss may be inserted into the stop to improve the sealing effect of the reaction chamber 2.

Of course, in this embodiment, the edge of the cover 5 and the top of the reaction chamber 2 may also be in plane contact, which is not limited in this embodiment.

In this embodiment, elevating gear b can be telescopic cylinder, and telescopic cylinder's cylinder body can fix the setting on the top of vacuum chamber 1, and telescopic cylinder's flexible end can seal the top of passing vacuum chamber 1, enters into vacuum chamber 1 in, telescopic cylinder's flexible end and closing cap fixed connection, through operation telescopic cylinder, can drive the closing cap and go up and down, and then realize opening or sealing of reaction chamber 2.

In this embodiment, telescopic cylinder can set up only two relatively, and two telescopic cylinder synchronous working make the removal atress of closing cap 5 more balanced, and the lift of closing cap 5 is more stable.

Example 7:

this embodiment is applicable to the ALD process apparatuses of embodiments 1-6.

The embodiment discloses a grabbing device for grabbing a substrate conveyed by a conveying device.

Fig. 7 is a schematic structural diagram of a gripping device of the present embodiment, and referring to fig. 1 and 7, a gripping device c of the present embodiment includes a frame 24 and a hand grip, wherein, the frame 24 can be fixedly arranged on the bottom of the cover 5 by welding or bolt connection, two grippers are oppositely arranged, each gripper comprises two connecting arms 25 and a supporting arm 26, the upper ends of the two connecting arms 25 are fixedly connected with the end part of the frame 24, the lower ends of the two connecting arms 25 are respectively provided with a connecting bulge 27 extending towards the other gripper, the two connecting bulges 27 are connected by the supporting arm 26, the conveying device 7 can convey the substrate to the supporting arms 26 of the two grippers, and then, the transport device 7 is returned and the substrates are transferred to the support arms 26 of the two grippers and the lifting device b is operated and the substrates are lowered with the closures 5 into the reaction chamber 2.

Further, in the present embodiment, in combination with fig. 9, the middle portions of the two connecting arms 25 are connected by the reinforcing arm 28 to improve the connection strength of the hand grip.

In this embodiment, the components forming the hand grip may be connected by welding.

Example 8:

this embodiment is applicable to the ALD process apparatus of embodiments 1-7.

The embodiment discloses a feeding chamber which is suitable for the processing equipment in the embodiments 1 to 6.

Referring to fig. 1, in this embodiment, the feeding chamber may be a cover 29, a bottom of the cover 26 is sealed on a base 30, the second material opening and the third material opening are respectively disposed at two sides of the cover 29, the first sealing door 5 is disposed between the second material opening and the first material opening, the second sealing door 6 is disposed at an outer side of the third material opening, and the second material opening and the third material opening can be opened or closed by operating the first sealing door 5 and the second sealing door 6.

In this embodiment, the first sealing door and the second sealing door are gate valves, which are outsourcing members, and this embodiment does not limit the specific structure thereof.

In this embodiment, an air hole may be disposed on the cover body of the feeding chamber, and the air hole is used for communicating with a vacuum pumping device to vacuumize the feeding chamber.

The conveying device 7 of the embodiment may include a conveying plate, the substrate may be mounted on a frame, the frame may be disposed on the conveying plate, the conveying plate is pushed by a linear motion mechanism such as a cylinder to move back and forth along a straight line on the base 30, one end of the conveying plate is operable to enter the vacuum chamber 1, the conveying plate is disposed above the reaction chamber 2, and when the frame with the substrate is conveyed to the vacuum chamber 1 on the conveying plate, and then falls onto the gripper of the gripping device c, the conveying plate is operated to return to the original position.

The embodiment can finish the conveying work of a plurality of matrixes at one time, and is suitable for the batch production and processing of products.

Example 9:

this example discloses an ALD process carried out in an ALD apparatus based on examples 1-8.

Fig. 8 is a schematic flow chart of an ALD processing method of the present embodiment, which, in conjunction with fig. 8, includes:

s1: operating the first sealing door 5 to enable the first sealing door 5 to seal the second material opening;

s2: providing a substrate, placing the provided substrate on a conveying device 7;

s3: operating the second sealing door 6 to enable the second sealing door 6 to seal the third material opening and enable the feeding cavity to be arranged in a sealing mode;

s4: vacuumizing a feeding cavity arranged in a sealing manner;

s5: operating the first sealing door 5 to open the second material opening;

s6: operating the conveying device 7, pushing the matrix into the vacuum chamber 1, transferring the matrix to the grabbing device c, and returning the conveying device 7;

s7: operating the lifting mechanism b to cover the sealing cover 5 on the top of the reaction chamber 2, and the substrate is positioned in the sealed reaction chamber 2 to form the state shown in fig. 9;

s8: injecting a precursor source from an air inlet channel 8 of the reaction chamber 2, and after the precursor source sweeps the substrate in the reaction chamber 2, discharging the substrate from an air outlet channel 9 of the reaction chamber to carry out ALD processing on the substrate;

s9: operating the lifting mechanism b to return the sealing cover 5;

s10: operating the conveying device 7 to transfer the processed matrix into the feeding chamber;

s11: operating the first sealing door 5 to enable the first sealing door 5 to seal the second material opening;

s12: and operating the second sealing door 6 to open the third material opening and transfer the processed matrix to the outside of the feeding cavity.

In this embodiment, S8 further includes heating the reaction chamber 2, and the heating temperature can be set according to the processing requirement, which is not limited in this embodiment.

S8 of this embodiment specifically includes:

and sequentially and alternately pulsing, namely injecting the precursor source into the reaction chamber 2 from the gas inlet channel of the reaction chamber 2, wherein the precursor source sequentially and alternately generates chemical adsorption reaction on the surface of the substrate in the reaction chamber 2, discharging redundant precursor sources and reaction byproducts from the gas outlet channel of the reaction chamber 2 after purging is finished, repeating the sequential pulsing, introducing the precursor sources to complete surface self-limiting chemical adsorption reaction, and controlling the repetition times to obtain a film layer with accurate thickness, namely completing the ALD processing of the substrate.

In addition, before S8 is performed, the first sealing door 5 can be operated to close the second port, which helps to keep the temperature field in the vacuum chamber 1 uniform, and further helps to ensure the processing quality of the substrate.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. An ALD processing apparatus, characterized in that the processing apparatus comprises:

2. The ALD processing apparatus of claim 1, wherein the gas inlet passage is hole-shaped, the gas inlet passage is provided in plurality, and the plurality of gas inlet passages are provided at one side of a bottom of the reaction chamber;

3. The ALD processing apparatus of claim 2, wherein the gas inlet passages are provided in a plurality of sets, the plurality of sets of gas inlet passages being arranged in sequence, each set of gas inlet passages having an arc shape, the aperture of each gas inlet passage of each set of gas inlet passages decreasing in sequence toward a direction near a center line of the bottom of the reaction chamber;

4. The ALD processing apparatus of claim 1, wherein two gas distribution plates are disposed in the reaction chamber, the two gas distribution plates being disposed opposite to each other about a center line of a bottom of the reaction chamber, the two gas distribution plates being disposed between the gas inlet channel and the gas outlet channel, the two gas distribution plates dividing the reaction chamber into a gas inlet chamber, a reaction chamber, and a gas outlet chamber, each gas distribution plate having a plurality of through holes disposed thereon.

5. The ALD processing apparatus of claim 1, wherein a transfer chamber is fixedly disposed at the bottom of the reaction chamber, the top of the transfer chamber is open, the bottom of the reaction chamber covers the top of the transfer chamber, two partition plates are disposed in the transfer chamber, the two partition plates divide the transfer chamber into a first chamber, a second chamber and a third chamber, the gas inlet channel is communicated with the first chamber, the gas outlet channel is communicated with the third chamber, a main gas inlet hole is disposed at the bottom of the first chamber, and a main gas outlet hole is disposed at the bottom of the third chamber.

6. The ALD processing apparatus of claim 1, the processing apparatus further comprising:

7. The ALD process apparatus of claim 6, further comprising a first heat reflection assembly, a second heat reflection assembly, a third heat reflection assembly, wherein:

8. The ALD process apparatus of claim 7, wherein the first heat reflecting assembly, the second heat reflecting assembly and the third heat reflecting assembly each include a plurality of heat reflecting plates arranged in sequence, and a contact form of adjacent two of the heat reflecting plates is a multi-point contact.

9. The ALD processing apparatus of claim 1, wherein the feed chamber is provided with an evacuation orifice.