CN1881090B

CN1881090B - Substrate processing system for performing exposure process in gas atmosphere

Info

Publication number: CN1881090B
Application number: CN2006100958355A
Authority: CN
Inventors: 城户秀作; 饭尾善秀; 池田雅树
Original assignee: NEC Corp
Current assignee: JINZHEN CO LTD
Priority date: 2001-08-28
Filing date: 2002-08-28
Publication date: 2011-05-25
Anticipated expiration: 2022-08-28
Also published as: CN1881090A; CN1881089A

Abstract

A substrate processing system which sprays exposure process gas onto a substrate disposed within a chamber. The substrate processing system is used, for example, for performing an exposure process of an organic film formed on a substrate in a gas atmosphere obtained by vaporizing an organic solvent solution for dissolving and reflowing an organic film. The substrate processing system comprises: the chamber having at least one gas inlet and at least one gas outlets; a gas introducing means which introduces the exposure process gas into the chamber via the gas inlet; and a gas distributing means. The gas distributing means separates an inner space of the chamber into a first space into which the exposure process gas is introduced via the gas inlet and a second space in which the substrate is disposed. The gas distributing means has a plurality of openings via which the first space and the second space communicate with each other and introduces the exposure process gas introduced into the first space into the second space via the openings.

Description

In gaseous environment, carry out the substrate handling system of exposure-processed

Technical field

The present invention relates generally to substrate handling system, it uses all gases environment to carry out gas exposure process or processing being used for forming on the substrate of semiconductor element.Particularly, the present invention relates to substrate handling system, wherein, in the gaseous environment that obtains by the evaporation organic solvent solution, carry out exposure-processed, so that dissolving and backflow organic film on substrate surface, forming organic film.

Background technology

Japanese Laid-Open Patent Application 11-74261 discloses a kind of conventional semiconductor processing system, and it carries out various processing being used for forming on substrate of semiconductor element.Disclosed system is a kind of by the next smooth device that forms the surface of semiconductor element thereon of the coated film that uses organic material to make in this open text.By using this system, just can form the flat film of the explosion that has high-flatness very and can fine opposing cause because of thermal treatment.

With reference to Figure 15, now disclosed disposal system in this open text is described.

As shown in figure 15, this disposal system comprises: closed chamber 501 is arranged on the heating plate 502 of closed chamber 501 basal surfaces.This disposal system also comprises: cover cover plate 503 and well heater 504 on closed chamber top, it is around closed chamber 501, so that the temperature in the closed chamber 501 is remained on the temperature the same with heating plate 502.

On the top of closed chamber 501, an air intake opening 505 and gas outlet 506 are set between closed chamber 501 and the cover plate 503.

In the method that Japanese Laid-Open Patent Application 11-74261 describes, on the heating plate 502 of the wafer transport that is covered with polysiloxane coating liquid in the closed chamber 501.In this case, the temperature of heating plate 502 is set to 150 ℃.Dipropyl (support) the glycol monoethyl ether that is heated to 150 ℃ imports closed chamber 501 as solvent gas from air intake opening 505.In this case, wafer exposes 60 seconds in solvent gas.After this, stop to import solvent gas.In chamber 501, import nitrogen then, and kept in this case 120 seconds.Wafer is sent from chamber 501 then.

In this disposal system, use conventional simple heating process, it utilizes heating plate to heat, and heat packs is contained in solvent in the silicone-coated liquid coverlay rapidly, and solvent progressively evaporates.Solvent by will be the same with silicone-coated liquid imports closed chamber 501 and postpones the evaporation of solvent in the coverlay, and keeps coverlay for liquid when flattening coverlay, just can accomplish this point.Therefore, in this method, postponed the evaporation of solvent in the coated film, therefore, the rapid contraction of coverlay just can not produce explosion, as the simple heating process of routine, and can obtain to have the very flat film of high-flatness.

In the said system of reference Figure 15, can on substrate, form simple flat film.

But the photoresist pattern reflow treatment of using above mentioned system to carry out Japanese Laid-Open Patent Application 2000-175138 description is impossible, and open text is the patented claim that the present inventor formerly submits to.

Here, referring to figs. 16A-16C above mentioned photoresist reflow treatment being carried out diagrammatic illustration with Figure 17 A-17B.

Figure 16 A-16C is to use the photoresist reflow treatment to make semiconductor element, that is, and and the diagrammatic cross-section of the section processes step of thin film transistor (TFT).

At first, shown in Figure 16 A, on transparent insulation substrate 511, form gate electrode 512, and grid insulating film 513 covers on transparent insulation substrate 511 and the gate electrode 512.

In addition, on grid insulating film 513, deposited semiconductor film 514 and chromium layer 515.After this, carry out the coating of coverlay by the spin coating, exposure and development treatment.Thereby, shown in Figure 16 A, form photoresist pattern 516.

Then, photoresist pattern 516 is used as mask uses, only the etching chromium layer 515, thereby, shown in Figure 16 B, form source/drain electrodes 517.

Then, photoresist pattern 516 is carried out reflow treatment, to form the photoresist pattern 536 shown in Figure 16 C.Photoresist pattern 536 covers at least one not etched zone, in this case, with as Figure 17 ATFT carry on the back channel region 518 corresponding zones and form after a while.

With this photoresist pattern 536 as mask, just can etching semiconductor film 514, and the semiconductive thin film 518 of formation shown in Figure 17 A, promptly carry on the back channel region 518.

In this manner, when as above photoresist pattern 516 being carried out reflow treatment, it is wideer than the part of the semiconductive thin film pattern 518 below source/drain electrodes 517 just in time that the area of semiconductive thin film pattern 518 becomes, promptly widely go out distance L, shown in Figure 17 A sectional view and Figure 17 B planimetric map in the side.Here, this distance L is called the backflow distance of photoresist pattern 536.

The photoresist pattern 536 of Fang Daing has been determined photoresist pattern 536 belows and by with photoresist pattern 536 size and dimension as the etched operative semiconductor film 514 of mask in this manner.Therefore, it is very important equably, accurately controlling the backflow distance L in whole substrate region.

But, in disclosed method, having used shown in Figure 15 structure among the Japanese Laid-Open Patent Application 11-74261 that mentions in the above, gas only flows through the surface of wafer 502, and gas and anisotropically mobile on whole zone, wafer 502 ground.Therefore, can not accurately control to the numerical value of wanting to the backflow distance L.

Summary of the invention

Therefore, an object of the present invention is to provide a kind of substrate handling system, therein, when the reflow treatment that makes pattern with photoresist forms the element pattern, can accurately control the backflow distance of photoresist pattern.

Another object of the present invention provides a kind of substrate handling system, therein, when making that the reflow treatment of pattern forms the element pattern with photoresist, can be accurately and can repeatedly control the backflow distance L of photoresist pattern.

Another purpose of the present invention provides a kind of substrate handling system, therein, when the reflow treatment of using the coating pattern forms the element pattern, can carry out the reflow treatment of coated film pattern with very high precision and repeatability, guarantee film thickness simultaneously as the coated film of mask.

Another purpose of the present invention is to eliminate the disadvantage of conventional substrate handling system.

According to a first aspect of the invention, provide the substrate handling system that sprays exposure-processed gas on a kind of substrate in being arranged on cell, substrate handling system comprises: the cell with at least one air intake opening and at least one gas outlet; Exposure-processed gas is imported the gas gatherer of cell by air intake opening; Gas distributing device; Wherein gas distributing device is divided into exposure gas through air intake opening first space that enters and second space that substrate is set with the inner space of cell; Gas distributing device has a plurality of openings, and first space and second space are interconnected by opening; The exposure gas that gas distributing device will import first space imports second space through opening.

According to a second aspect of the invention, provide a kind of gas that will expose to be injected in each parallel on-chip substrate handling system that is placed in the cell according to vertical direction, substrate handling system comprises: the cell with at least one air intake opening and at least one gas outlet; Exposure-processed gas is imported the gas gatherer of cell by air intake opening; Gas distributing device, the corresponding substrate of each gas distributing device; Wherein gas distributing device has a plurality of openings, and will be injected on the substrate through the exposure-processed gas that air intake opening imports by opening.

Preferably cell has a plurality of air intake openings, and uses dividing plate that first space is divided into around a plurality of little space of the air intake opening of predetermined number.

Substrate handling system also comprises the gas flow rate control gear that is used for each air intake opening.

Substrate handling system also comprises one or more gaseous diffusion parts, and it is arranged in first space, and will become the uniform exposure-processed gas of density in the cell through the exposure gaseous diffusion that air intake opening imports.

Favourable part is that gas distributing device comprises crooked disk shaped part, and it is to substrate protrusion or recessed.

Favourable part is, substrate handling system comprises that also the jet scope of setting determines device, so that jet scope determines that device and gas distributing device are overlapping and close the opening of predetermined number in a plurality of openings of gas distributing device, thereby limit the jet scope of exposure-processed gas.

Favourable part is that gas distributing device can be around the center rotation.

According to a third aspect of the present invention, provide a kind of exposure-processed gas is injected in the on-chip substrate handling system that is provided with in the casing, substrate handling system comprises: the cell with at least one air intake opening and at least one gas outlet; Exposure-processed gas is imported the gas gatherer of cell by air intake opening; The exposure-processed gas that imports cell is sprayed to the gas distributing device of substrate; Wherein gas distributing device can move by the upper wall along cell in cell.

Preferably gas distributing device can rotate around central shaft.

Preferably substrate handling system also comprises the stand of placing substrate, and stand can move up and down.

Preferably substrate handling system also comprises the stand of placing substrate, and stand can be around its central shaft rotation.

Favourable part is that substrate handling system also comprises the substrate temperature control device of controlling substrate temperature.

Favourable part is that substrate handling system also comprises the gas temperature control apparatus of control exposure-processed gas temperature.

Favourable part is that substrate handling system also comprises the stand of placing substrate, and the substrate temperature control device is controlled the temperature of substrate by the temperature of control stand.

Preferably the air pressure range in the cell is from-20KPa to+20KPa.

Preferably substrate handling system also is included in the plasma generating device that produces plasma in the cell.

Preferably plasma generating device comprises upper electrode that is arranged on the substrate top and the lower electrode that is arranged on the substrate below, the one ground connection in upper electrode and the lower electrode wherein, and in upper electrode and the lower electrode another is by high frequency electric source ground connection.

Favourable part is that substrate handling system also comprises: the reduced pressure delivery chamber, and it is communicated with cell, and is used under decompression state substrate sent into cell and is used under decompression state substrate being transported from cell; The pressure control conveying chamber, it is communicated with the reduced pressure delivery chamber, and is used under atmospheric pressure state substrate being imported from the outside, is used under decompression state substrate is transported and is used under atmospheric pressure state substrate being sent from cell.

The substrate handling system of the application of the invention first aspect, gas distributing device roughly is sprayed on exposure-processed gas on the whole substrate equably.Therefore, just can on whole substrate surface, control the backflow distance with very high degree of accuracy.

The substrate handling system of the application of the invention second aspect just can be handled the treatment effeciency that therefore a plurality of substrates also improve substrate greatly simultaneously.

In the substrate handling system of third aspect present invention, gas distributing device along the cell upper wall portion according to substrate longitudinally direction move.When gas distributing device moved in a longitudinal direction, gas distributing device was sprayed on exposure-processed gas on the substrate.In this manner, when gas distributing device sprayed to substrate with exposure-processed gas, distributor scanned along substrate.Therefore, just exposure-processed gas can be sprayed on the substrate equably.

As an example, the flow velocity of exposure-processed gas preferably the 2-10 liter/minute.But, the exposure gas flow velocity can for the 1-100 liter/minute.

The temperature of exposure-processed gas is preferably 20-25 degree centigrade.But the temperature of exposure-processed gas also can be 18-40 degree centigrade.

Distance between substrate and the gas distributing device is 5-15mm preferably.But the distance between substrate and the gas distributing device also can be 2-100mm.

Preferably 24-26 degree centigrade of the temperature of stand.But the temperature of stand can be 18-40 degree centigrade.

Air pressure in the cell is preferably from-20 to+2KPa.But the air pressure in the cell can be from-50 to+50KPa.

Description of drawings

Will make these and other characteristic of the present invention, advantage clearer to the following description of the present invention with reference to the accompanying drawings, use identical or corresponding part in the identical digital watch diagrammatic sketch in the accompanying drawings.

Fig. 1 is the constructed profile according to the substrate handling system of first embodiment of the invention;

Fig. 2 is the gas injection dish that uses in the substrate handling system shown in Figure 1 and the skeleton view of gas injection dish framework;

Fig. 3 is the synoptic diagram of the gaseous diffusion parts example used in the substrate handling system shown in Figure 1;

Fig. 4 is the figure that concerns between the backflow distance of explanation coated film side and the return time;

Fig. 5 shows after carrying out coating pattern reflow treatment and refluxes apart from homogeneity and steam flow rate time relation figure in the substrate;

Fig. 6 shows after carrying out coating pattern reflow treatment the homogeneity of backflow distance and the graph of a relation between the distance between lifter board and gas injection dish in the substrate;

Fig. 7 shows the graph of a relation between the temperature of the flow velocity of coated film pattern and lifter board;

Fig. 8 is the sectional view according to the substrate handling system schematic construction of second embodiment of the invention;

Fig. 9 is the sectional view of substrate handling system example, wherein is provided with dividing plate, so that dividing plate is around each gas conduit;

Figure 10 is the sectional view of substrate handling system example, and wherein only gas conduit is arranged in the one in a plurality of little spaces;

Figure 11 is the diagrammatic cross-section according to the substrate handling system of third embodiment of the invention;

Figure 12 is the diagrammatic cross-section according to the substrate handling system of fourth embodiment of the invention;

Figure 13 is the diagrammatic cross-section according to the substrate handling system of fifth embodiment of the invention;

Figure 14 is the synoptic diagram according to the substrate handling system of sixth embodiment of the invention;

Figure 15 is used for flattening the sectional view of conventional processing system of coated film;

Figure 16 A-16C shows can the flatten conventional processing system of coated film of use and makes a part in the treatment step of thin film transistor (TFT);

Figure 17 A shows a part of making the thin film transistor (TFT) step after the step of carrying out shown in Figure 16 A-16C; With

Figure 17 B is the partial plan of the workpiece shown in Figure 17 A sectional view.

Embodiment

Below with reference to accompanying drawing embodiments of the invention are described.

(first embodiment)

Fig. 1 shows the synoptic diagram according to the substrate handling system structure of first embodiment of the invention.Substrate handling system according to first embodiment of the invention is exposure-processed gas evenly can be sprayed the device that is arranged on substrate surface in the cell.

As shown in Figure 1, substrate handling system 100 generally includes: exposure-processed chamber 101 imports exposure-processed gas the gas introducing mechanism 120 of exposure-processed chamber 101 and exposure-processed gas is injected in on-chip gas injection equipment 110.

Exposure-processed chamber 101 has the chamber 10 of bottom and the chamber 20 on top.The chamber 10 on top and the chamber of bottom 20 link together through the ring of the O shape on the chamber 10 that is attached to the bottom 121.

Exposure-processed chamber 101 has a plurality of air intake opening 101a and two gas outlet 101b.Although do not illustrate in the drawings, each gas outlet 101b has the extent of opening controlling mechanism, and can arbitrarily control the aperture opening ratio of each gas outlet 101b.

In exposure-processed chamber 101, a lifter board 11 is set, it moves up and down according to vertical direction.Substrate 1 is arranged on the upper surface of lifter board 11 according to horizontal attitude.Lifter board 11 moves up and down among the scope of 1-50mm.

Gas injection equipment 110 comprises: a plurality of gas conduits 24, each gas conduit 24 inserts a corresponding air intake opening 101a who forms in the chamber 20 on top.Gaseous diffusion parts 23, each gaseous diffusion parts 23 is attached to the end of gas conduit 24, gas injection dish 21, the framework 212 of gas injection dish 21, its fixed gas injection dish 21 also limits the gas jeting area.

Fig. 2 shows the framework 212 of gas injection dish 21 and gas injection dish 21.

As shown in Figure 2, gas injection dish 21 is made of plate-shaped part, and has a plurality of rectangular apertures 211 that are arranged in.Aperture 211 is set so that in covering the zone of whole substrate, form aperture 211, substrate be arranged on the position that 21 belows are coiled in the gas injection.

In this embodiment, the diameter in each aperture 211 is 0.5-3mm, and the 1-5mm preferably of the distance between the adjacent apertures 211.

As shown in Figure 1, gas injection dish 21 is horizontally set between gaseous diffusion parts 23 and the substrate 1.Gas injection dish 21 is divided into the first space 102a of exposure-processed gas process gas conduit importing with exposure-processed chamber 101 and the second space 102b of substrate 1 is set.The first space 102a and the second space 102b communicate with each other by aperture 211, and the exposure-processed gas that imports the first space 102a imports the second space 102b through aperture 211.

As Fig. 2, the framework 212 of gas injection dish 21 comprises shaped as frame sidewall sections 212a and shaped as frame extension 212b, and it extends to the inside from sidewall sections 212a.

Gas injection dish 21 utilizes encapsulant 214 to be bonded on the 212b of extension.Thereby the framework 212 of gas injection dish 21 and gas injection dish 21 is combined closely between the two without any the space, and exposure-processed gas can not leak from the periphery of gas injection dish 21.

The development length of extension 212b can roughly be set,, thereby limit the zone of exposure-processed gas from the ejection of gas injection dish so that close the aperture 211 that some form in gas injection dish 21.

In this embodiment, the height of sidewall sections is 5mm, and the length of extension 212b, promptly lateral width is 10mm.The framework 212 of gas injection dish 21 is arranged on substrate 1 top 10mm eminence.

Each gaseous diffusion parts 23 for example is arranged among the first space 102a that is made by box shape assembly, and box shape assembly has a plurality of holes on its lateral wall.

The exposure-processed air impingement that sprays through gas conduit 24 and temporarily is stored in gas and expands in the part 23 on the inwall of each gaseous diffusion parts 23, so that the evenly diffusion in gaseous diffusion parts 23 of exposure gas.Therefore, in gaseous diffusion parts 23, the density of exposure-processed gas becomes evenly, and exposure-processed gas sprays from gaseous diffusion parts 23 after this.

It is above mentioned to be noted that the shape of gaseous diffusion parts and pattern are not limited to, but can have any other shape and pattern.Fig. 3 shows the example of another kind of gaseous diffusion parts 23.

Gaseous diffusion parts 23 as shown in Figure 3 are hollow ball-shape, and have a plurality of hole 23a that form on the outside surface of gaseous diffusion parts 23.The inner space of gaseous diffusion parts 23 is communicated with its outside space through a plurality of hole 23a.

Gas conduit 24 extends to the center of spherical gas proliferation part 23, thereby exposure-processed gas sprays to the inside of gaseous diffusion parts 23 from the center of gaseous diffusion parts 23.Therefore, exposure-processed gas arrives any one hole 23a from the center of gaseous diffusion parts 23 through identical distance.In this manner, when it arrived hole 23, exposure-processed gas was spread, and distribution density is even.

As shown in Figure 1, gas introducing mechanism 120 comprises steam generation device 31 and tracheae 32, and it offers each gas conduit 24 with the exposure-processed gas that produces in the steam generation device 31.

Store the liquid that is used for producing exposure-processed gas in the gas generation apparatus 31.Steam generation device 31 is with nitrogen (N ₂) inject liquid as steam feed, so that in liquid, produce bubble.Thereby, from liquid, producing steam, generation comprises steam and N ₂Gas, and gas offers exposure-processed chamber 101 as exposure-processed gas 33.

In addition, gas introducing mechanism 120 has around the container of steam generation device 31 or reservoir 301, storing temperature controlling liquid in reservoir 301.By with the heat interchange of temperature controlling liquid, just can control the temperature that is used in steam generation device 31, producing the liquid of exposure-processed gas.Thereby controlled the temperature of exposure-processed gas.

Just can obtain by mixing ethylene glycol bisthioglycolate acetate and pure water as the temperature controlling liquid.The temperature controlling liquid can be any liquid with high thermal conductivity, and has the solidifying point that is lower than zero degree (0 ℃).For example, use heater heats liquid, use refrigerator liquid cooled electronics body, be used in factory, cooling off factory's chilled water of various manufacturing systems, can control the temperature controlling liquid.

Can will provide the flow speed control of exposure-processed gas 33 in the scope that 1-50L/ divides to exposure-processed chamber 101.

Use not shown vacuum pump, just can be through discharging the exposure-processed gas that blows to substrate 1 in the exposure-processed chamber 101 at the bottom compartment 10 peripheral gas outlet 101b that form.Exhaust porose disc 131 with a plurality of holes covers on each gas outlet 101b.By this exhaust porose disc 131, exposure-processed gas just can evenly be discharged after handling.

In this embodiment, each the vent port diameter that is arranged on the exhaust porose disc 131 is 2-10mm, and the space between the adjacent holes is 2-50mm.

In addition, for the pure gaseous environment of acquisition in exposure-processed chamber 101, and, just need in the very short time, carry out exchange gas in the exposure-processed chamber 101 in order the processing time to control to second.

Test findings from the inventor, the vacuum pump that can find to be used for to discharge the gas in the exposure-processed chamber 101 should have the speed of discharging gas or deflation rate and divide or higher ability for 50L/ at least, and is-100KPa or lower counting from the beginning exhaust through the air pressure one minute exposure-processed chamber 101.

Then, to describing according to the substrate handling system 100 of the embodiment of the invention and substrate 1 disposal route of use substrate handling system 100.

At first, the substrate 1 that will handle is placed on the lifter board 11, and the cell 20 on the cell 10 of bottom and top closely links to each other.Lifter board 11 can raise or reduce, and the distance between gas injection dish 21 and the substrate 1 is transferred to 10mm.

In order in exposure-processed chamber 101, to realize pure gaseous environment, before exposure-processed gas is imported cell, forced to bleed in the exposure-processed chamber, so that the air pressure in the exposure-processed chamber 101 approximately becomes-70KPa or lower, can think that wherein atmospheric pressure is 0KPa.

Then, the air pressure with nitrogen in the steam in jection generation device 31 transfers to 0.5Kg/cm.And the flow velocity of nitrogen transfers to the 5.0L/ branch.In this case, nitrogen is injected the treating fluid that is stored in steam generation device 31, so that vaporized gas produces bubble from treating fluid.

In this manner, just can produce the exposure-processed gas 33 that comprises vaporized gas and nitrogen from treating fluid, and the gas velocity of dividing with 5.0L/ offers tracheae 32.

Carry exposure-processed gas 33 and process tracheae 32 and gas introduction tube 24 to be stored in the gaseous diffusion parts 23, and in gaseous diffusion parts 23, exposure-processed gas 33 is spread, so that exposure-processed gas becomes roughly even.After this, exposure-processed gas 33 is ejected into the first space 102a from gaseous diffusion parts 23.

The exposure-processed gas 33 that sprays into the first space 102a from each gaseous diffusion parts 23 has roughly density and speed uniformly.In addition, exposure-processed gas 33 temporarily is stored in the first space 102a, thereby gas density further obtains evenly.Therefore, exposure-processed gas 33 sprays into the second space 102b equably through the aperture 211 of gas injection dish 21, and sprays to equably or blow on the substrate 1 that is placed on the lifter board 11.

Also can omit gaseous diffusion parts 23 and make gas density even by using gases injection dish 21.

As the result of this processing, produce the backflow (seeing Figure 17 A) of photoresist pattern.

Exposure-processed gas is through tracheae 32, and gas introduction tube 24 and gas proliferation part 23 are supplied with exposure-processed parts 101 continuously, and the air pressure in exposure-processed chamber 101 becomes positive air pressure, that is, when atmospheric pressure value was greater than or equal to 0KPa, gas outlet 101b opened.

As the condition of disposal route, the air pressure in the exposure-processed chamber 101 is controlled to such as+0.2KPa.In these cases, the opening degree of control gas outlet 101b is so that the air pressure in the exposure-processed chamber 101 remains on+0.2KPa.

In this case, can scope, select a value as handling air pressure from-50KPa to+50KPa.Comparatively preferably, handling air pressure is the value of selecting the scope from-20KPa to+20KPa.But the value of selecting handling air pressure and be from-5KPa to+5KPa is better, and the error control of handling atmospheric pressure value smaller or equal to+/-0.1KPa.

After through the predetermined processing time,, use a kind of discharge exposure-processed gas and use N in order to carry out exchange gas fast ₂The method of replacing.

In this method, at first stop to import exposure-processed gas 33, after this exposure-processed chamber 101 is taken out into approximately-70KPa or lower vacuum.In addition, the valve open in the path of representing as dotted line among Fig. 1, and as indoor substitution gas divides the inert gas such as nitrogen with 20L/ or higher speed imports exposure-processed chamber 101.Although imported inert gas, exposure-processed chamber 101 had at least 10 seconds or more also keep taking out vacuum.At this moment, the air pressure in the exposure-processed chamber 101 remains on approximately-30KPa.

Stop then vacuumizing, and nitrogen is imported exposure-processed chamber 101, so that the air pressure in the exposure-processed chamber 101 becomes positive air pressure.

When the air pressure in the exposure-processed chamber 101 become approximately+during 2KPa, the importing that stops to replace nitrogen.

Then, the cell 20 on top and the cell 10 of bottom are opened, and take the substrate 1 of processing away.

Example to the photoresist pattern that uses in the present embodiment as the organic film pattern describes below.As the photoresist material, photoresist that is dissolved in organic solvent and the photoresist that is dissolved in water are arranged.

As the example of the photoresist that is dissolved in organic solvent, have a kind of by adding macromolecule and adding the photoresist that photosensitive emulsion obtains.

Various polymkeric substance are arranged.As the polymkeric substance of ethene polymers system, polystyrene ether is arranged.As the polymkeric substance of rubber system, have by with the cyclisation polyisoprene, cyclisation polybutadiene or the like obtains with the bisazide compound.As the polymkeric substance of novalac resin system, there is cresols novolac and naphthoquinones diazo-5-sulphonic acid ester to mix and the polymkeric substance of acquisition.As acrylic acid copolymer resins system, the polypropylene amino-compound is arranged, polyamic acid or the like.

As water-soluble photoresist example, have by adding photosensitive emulsion and adding the various photoresists that polymkeric substance obtains.As polymkeric substance, one of following various materials or two kinds and multiple combination are arranged and obtain: polyacrylic acid, Pioloform, polyvinyl acetal, polyvinylpyrrolidone, polyvinyl alcohol (PVA), polyethyleneimine, polyethylene oxide, styrene-maleic anhydride copolymer, polyvinylamine, polyallylamine, contain water soluble resin azoles quinoline, water-soluble melamine resin, water-soluble urea-formaldehyde resin, alkyd resin, and sulfanilamide (SN).

It then is example as the chemical solution of the solvent that dissolves photoresist.

1. when photoresist is dissolved in the organic solvent:

(a) organic solvent

As the example of reality, illustrate below by the organic solvent that organic solvent is divided into upperseat concept and the organic solvent of subordinate concept.Here, symbol " R " expression alkyl family or substituting group alkyl family, symbol " Ar " expression phenyl family or the aromatic ring except that phenyl family.

* ethanol or the like (R-OH)

* alkoxyethanol etc.

* ether or the like (R-O-R, Ar-O-R, Ar-O-Ar)

* ester or the like

* ketone or the like

* ethylene glycol etc.

* alkylene ethylene glycol etc.

* glycol ether etc.

Actual example as above mentioned organic solvent has:

*CH ₃OH，C ₂H ₅OH，CH ₃(CH ₂)XOH

* isopropyl alcohol (IPA)

* ethoxy ethanol

* contain methyl cellosolve

* chain alkyl ether

* simple interest uric acid (MEA)

* acetone

* pentanedione

* dioxane

* ethyl acetate

* butyl ethyl ester

* toluene

* MEK (MEK)

* diethyl ketone

* dimethyl sulfoxide (DMSO) (DMSO)

* methyl isopropyl ketone (MIBK)

* butyl carbitol formal

* n butyl acetate (nBA)

* gamma-butyrolacton

* ethyl cellulose acetate (ECA)

* ethyl lactate

* ethyl acetone acid

* 2-heptanone (MAK)

* 3-methoxy butyl acetate

* ethylene glycol

* propylene glycol

* butylene glycol

* ethylene glycol monoethyl ether acetate

* carbitol acetic acid esters

* ethylene glycol monoethyl ether acetate acetate

* glycol-ether methyl esters

* carbitol methyl esters acetate

* glycol-ether-n-butyl ester acid

* polyglycol

* polypropylene glycol

* polytetramethylene glycol

* polyglycol-ether acetic acid esters

* poly-carbitol acetic acid esters

* polyglycol-ether acetic acid esters acetate

* polyglycol-ether methyl esters

* poly-carbitol methyl esters acetate

* polyglycol-ether-n-butyl ester acid

* methyl-3-propionic ester methoxy ethyl ester (MMP)

* propylene glycol-ether acetic acid esters (PGME)

* propylene glycol-ether acetic acid esters acetate (PGMEA)

* propylene glycol-propionic acid ether (PGP)

* propylene glycol-ether acetic acid esters (PGEE)

* ethyl group-3-ethoxy-c acid esters (FEP)

* dipropylene glycol-ether acetic acid esters

* tripropylene-ether acetic acid esters

* polypropylene glycol-ether acetic acid esters

* propylene ether acetic acid esters propionic ester

* 3-contains the methoxy propionic ester

* 3-Ethoxyethane base propionic ester

* N-methyl-2-1,2,3,-thrihydroxy-benzene

2. when photoresist is water-soluble

(a) water

(b) principal ingredient is the aqueous solution of water

Use is according to the substrate handling system and the exposure-processed gas 33 of present embodiment, and in fact the present inventor has carried out the backflow of coated film, the following formation pattern of coated film.

At first, be that the coated film that the photoresist of phenolic resin is made is 2.0 μ m at on-chip thickness by principal ingredient, and the pattern width that forms on it is 10.0 μ m, length is 20.0 μ m.In substrate handling system 100, use NMP the coated film pattern to be refluxed as exposure-processed gas according to present embodiment.N in being included in exposure-processed gas 33 ₂Identical among relevant condition and above mentioned first embodiment.

Fig. 4 shows the figure that concerns between the backflow distance of coated film pattern side direction and the return time.In this case, the backflow essential condition except that above mentioned situation is as follows.

(1) exposure-processed gas and flow velocity: the steam 5L/ branch of treat liquid; N ₂Gas 5L/ branch

(2) temperature of exposure-processed gas: 22 ℃

(3) distance between lifter board 11 and the gas injection dish 21: 10mm

(4) temperature of lifter board 11: 26 ℃

(5) handle air pressure :+0.2KPa in the exposure-processed chamber 101

As shown in Figure 4, the backflow of coated film pattern distance changes with the return time approximately linear.Therefore, can control the backflow distance by the control return time.

Fig. 5 shows after carrying out coating pattern reflow treatment and refluxes apart from homogeneity and steam flow rate time relation figure in the substrate.

In counterflow condition as shown in Figure 4, return time, the temperature of processing gas, the distance between lifter board 11 and the gas injection dish 21, the processing air pressure in the temperature of lifter board 11 and the exposure-processed chamber 101 all remain unchanged, and the flow velocity of processing gas changes.The condition of condition except that these conditions during all with key diagram 4 is identical.

When obtaining concerning as shown in Figure 5, the return time of coated film pattern is 5 minutes, and after refluxing, measures the backflow distance of coated film pattern.In on-chip 10 (ten) individual point measurement backflow distances, select the surface that is evenly distributed on substrate 1 for wherein ten.If: in the backflow distance of ten point measurements, maximal value is Tmax, and minimum value is Tmin, and mean value is Tmean.In this case, following formula shows at the backflow of the measurement point deviation Txs apart from Tx.

Txs＝|(Tmean-Tx)/Tmean|

As shown in Figure 5, when the flow velocity of exposure-processed gas 33 2L/ assign to 10L/ divide between the time, the deviation of backflow distance is approximately 5% in the substrate 1, and has obtained result preferably.

According to the inventor's test, can find, in the controlling factor of reflow treatment, extremely important to the exposure-processed gas flow that the photoresist pattern provides.Also can be by gas injection dish 21 be set, freely control the backflow distance according to the supply of the position control exposure gas 33 of substrate.

Fig. 6 shows after carrying out coating pattern reflow treatment the homogeneity of backflow distance and lifter board 11 and gas injection in the substrate and coils graph of a relation between 21 the distance.

When obtaining concerning as shown in Figure 6, in counterflow condition as shown in Figure 4, return time, handle the temperature of gas, the flow velocity of exposure-processed gas, processing air pressure in the temperature of lifter board 11 and the exposure-processed chamber 101 all remains unchanged, and the distance between lifter board 11 and the gas injection dish 21 changes.

As shown in Figure 6, when the value of the distance adjustment to 5 between lifter board 11 and the gas injection dish 21 between 15mm, just can make in substrate 1 zone backflow variable in distance be reduced to about 10% or still less.

Fig. 7 shows the graph of a relation between the temperature of the flow velocity of coated film pattern and lifter board.

In this case, under condition as shown in Figure 4, return time, handle the temperature of gas, the flow velocity of exposure-processed gas, the processing air pressure in distance between lifter board 11 and the gas injection dish 21 and the exposure-processed chamber 101 all remains unchanged, and the temperature of lifter board 11 changes.

As shown in Figure 7, control to 24-26 ℃, make the flow velocity of coated film pattern become about 10 μ m/ branches, and be stable by temperature with lifter board 11.

According to above mentioned result, under the condition below, in substrate handling system 100 according to the present invention, just can make the deviation of the backflow distance in substrate 1 zone be reduced to 10% or littler, keep its function simultaneously as mask.

(1) exposure-processed gas and flow velocity: the steam 2-10L/ branch of treat liquid; N ₂Gas 2-10L/ branch

(2) temperature of exposure-processed gas: 20-26 ℃

(3) distance between lifter board 11 and the gas injection dish 21: 5-15mm

(4) temperature of lifter board 11: 24-26 ℃

(5) handle air pressure in the exposure-processed chamber 101 :-1 arrives+0.2KPa

In the above, the system that is used as the backflow that can carry out photolithography thin film according to the substrate handling system 100 of present embodiment illustrates.But, substrate handling system 100 purpose beyond the photoresist film that can be used to reflux.For example, can use substrate handling system 100,, thereby improve the adhesion of photoresist and substrate surface so that clean the surface of semiconductor chip with acid.In this case, use following chemical material.

(A) principal ingredient is the solution (being used for surface clean) of acid

* hydrochloric acid

* hydrofluorite

* other acid solution

(B) inorganic-organic mixed solution (reinforcement that is used for organic film is adhered to)

* such as the silane adhesive of hexamethylene disilane and so on

(second embodiment)

Fig. 8 shows the sectional view according to the substrate handling system schematic construction of second embodiment of the invention.Similar to substrate handling system 100 according to first embodiment, can be used for exposure-processed gas evenly sprayed to according to the substrate handling system 200 of second embodiment of the invention and be arranged on the cell interior substrate.

In Fig. 8, have and part according to the same 26S Proteasome Structure and Function of the substrate handling system 100 of first embodiment with identical numeral.

According to the test that the present inventor did, can find on substrate 1, to handle equably, and, just need the temperature of control substrate handling system each several part for controls reaction speed or speed in order to stablize.Therefore, in substrate handling system 200, following temperature control mechanism is arranged according to present embodiment.

In the cell 10 of bottom,, make the inside of lifter board hollow in order to control the temperature of substrate 1.Provide temperature controlling liquid 112 to the inside of lifter board 11, so that temperature controlling liquid 112 is in lifter board 11 inner loop.Thereby can roughly control the entire portion of lifter board 11.

Equally, the cell 20 on top is also made hollow, provides temperature controlling liquid 221 to the inside of the cell 20 on top, so that the temperature controlling liquid circulates in the cell 20 on top.Thereby not only temperature controlling liquid 221 has been controlled the temperature of top cell 20, and by heat conduction also can pilot-gas ingress pipe 24 temperature, the temperature of the temperature of gaseous diffusion parts 23 and the gas injection dish that links to each other with the cell 20 on top.

In gas introducing mechanism 120, for the temperature of the exposure-processed gas 33 of controlling supply, the inside of reservoir 301 is made hollow.Provide the temperature controlling liquid to reservoir 301 inside, so that the temperature controlling liquid is in reservoir 301 inner loop.Thereby, roughly control the temperature of exposure-processed gas 33.

As the temperature controlled scope of each part mentioned above, temperature need be controlled among from 10 to 80 ℃ the scope, be specially from 20 to 50 ℃ the scope.Can find equally temperature controlled precision need be remained on+/-3 ℃, specifically preferably+/-0.5 ℃.

Now the working condition according to the substrate handling system 200 of second embodiment of the invention is described, and substrate 1 disposal route of using this substrate handling system 200.

At first, temperature controlling liquid 112 is adjusted to 24 ℃, and the temperature of the temperature of lifter board 11 and substrate 1 all is controlled at equals 24 ℃ temperature.

Equally, the temperature that offers the temperature controlling liquid of reservoir 301 is transferred to 26 ℃, and will control to identical temperature from the temperature of the exposure-processed gas 33 of gas injection equipment 120.

The temperature of temperature controlling liquid equally also is adjusted to 26 ℃, and with gas injection dish 21, the cell 20 on top all is controlled to identical temperature with the temperature of gas proliferation part 23.

After this, the step of execution is similar to the step of carrying out according to the substrate handling system 100 of first embodiment.

(variations of first and second embodiment)

Above mentioned according to first embodiment substrate handling system 100 and be not limited to above-mentioned situation according to the structure of the substrate handling system 200 of second embodiment, but can change according to following various forms.

At first, gas injection equipment 110 can followingly be revised.

In substrate handling system 100 and 200, advise a gas flow rate control gear is arranged on the top of gas introduction tube 24, and spread to each gas introduction tube 24 from exposure-processed gas 33 from the gas velocity control gear according to first and second embodiment.But, the gas flow rate control gear can also be arranged on each gas introduction tube 24, to regulate its flow velocity.The gas flow rate control gear can be the mechanism of any kind control exposure-processed gas 33 flow velocitys.For example, can pass through the implementation quality flow control, the use traffic meter, open-angle of by-pass valve control or the like is come the pilot-gas flow velocity, so that control exposure-processed gas 33 is mobile.

In substrate handling system, a plurality of gaseous diffusion parts 23 are set in the first space 102a according to first embodiment of the invention.But, the first space 102a can be divided into a plurality ofly round a gas introduction tube 24 or have a plurality of little space of a plurality of gas introduction tubes 24 of dividing plate, and one or more gaseous diffusion parts 23 are set in each little space.

Fig. 9 shows the sectional view of this substrate handling system example, wherein in the first space 102a dividing plate is set, so that dividing plate 103 is around each gas introduction tube 24.

In this structure,, can control each gas introduction tube 24 fully, i.e. the gas flow in each little space when exposure-processed gas 33 when little space sprays into the second space 102b from each through gas injection dish 21.Therefore can control the air-flow of each position among the second space 102b.Therefore, can exposure-processed gas 33 be sprayed on the substrate 1 that is placed among the second space 102b with uniform density.If desired, can also exposure-processed gas 33 be sprayed on the substrate 1 that is placed in the second space 102b with the gas density distribution of wanting.

In this case, often need not seal above mentioned little space fully with dividing plate.Also may in each dividing plate 103 one or more hole or slit be set, so that adjacent little space can partly be communicated with each other, and gas can be come in and gone out betwixt.

When using dividing plate 103 that the first space 102a is divided into a plurality of little space, do not need each little space all to comprise a gas introduction tube 24.For example, as shown in figure 10, only a gas introduction tube 24 can be arranged in any one of a plurality of little spaces.In this case, each dividing plate has hole or a plurality of hole 103a, and scatters into whole little spaces through via hole 103a from the exposure-processed gas 33 that gas introduction tube 24 sprays into.

In substrate handling system 100, form gas injection dish 21 with the flat disc parts according to first embodiment of the invention.But, can also form gas injection dish 21 according to having towards substrate 1 curved discs parts recessed or that protrude.

Equally, in the substrate handling system 100 according to first embodiment of the invention, gas injection dish 21 is fixed on the cell 20 on top.But, also can make gas injection dish 21 around center rotation as the gas injection dish 21 of rotation center.For example, when exposure-processed gas 33 is injected on the substrate 1, can use drive source, for example motor or the like rotates gas injection dish 21, so that exposure-processed gas 33 is sprayed on the substrate 1 more equably.

In addition, not only gas injection dish 21, and lifter board 11 can be around the central shaft rotation as rotation center.

For example, gas injection dish 21 can with lifter board 11 reverse rotations, thereby exposure-processed gas 33 is sprayed on the substrate 1 more equably.

Also can the air pressure detecting unit be set in exposure-processed chamber 101, be used for measuring the air pressure inside of exposure-processed chamber 101, and operate vacuum pumping system, be used for discharging gas from exposure-processed chamber 101 according to the air pressure that the air pressure detecting unit is measured.Thereby automatically control the air pressure inside of exposure-processed chamber 101.

(the 3rd embodiment)

Figure 11 shows the sectional view according to the substrate handling system schematic construction of third embodiment of the invention.Similar to substrate handling system 100 according to first embodiment of the invention, also exposure-processed gas can be sprayed on the substrate that is arranged in the cell equably according to the substrate handling system 300 of third embodiment of the invention.

In Figure 11, represent to have and part according to the same 26S Proteasome Structure and Function of the substrate handling system 100 of first embodiment with identical reference number.

Substrate handling system 300 according to present embodiment comprises movably gas conduit 34 and the gas injecting-unit 36 that is attached to gas introduction tube 34 bottoms, replacement is according to a plurality of gas conduits 24 in the first embodiment substrate handling system 100, a plurality of gaseous diffusion parts 23 and gas injection dish 21.

In top cell 20 according to the substrate handling system 300 of present embodiment, be provided with not shown slit, it is along the length direction of substrate 1, and promptly extend the side among Figure 11.Removable gas conduit 34 slides in this slit.

Movably gas conduit 34 is driven by not shown motor and can slide along the slit, keeps the impermeability of 101 inner spaces, exposure-processed chamber.

The upper end of removable gas conduit 34 links to each other with tracheae 32, and through tracheae 32 exposure-processed gas 33 is offered cell.

Import 34 lower end at gas movably, additional have a gas spout part 36.Gas spout part 36 has hollow structure, and has the underpart opening part, and the gas injection dish 21a with a plurality of opening 211a is additional thereon.

Gas spout part 36 has with the same function of gaseous diffusion parts 23.Therefore, the exposure-processed gas 33 through

tracheae

32 and 34 importings of removable gas introduction tube spreads in gas spout part 36.After the density of exposure-processed gas 33 became evenly in gas spout part 36, exposure-processed gas 33 was sprayed onto on the substrate 1 through the opening 211a of gas injection dish 21a.

Although be not shown specifically in the drawings, gas injection dish 36 rotatably is attached to movably on the gas introduction tube 34, so that gas spout part 36 can be utilized such as not shown motor around its axis rotation.

In the substrate handling system 300 according to present embodiment, removable gas conduit 34 moves according to substrate 1 longitudinal direction along the slit that is arranged in the top cell 20.When removable gas conduit 34 moved according to longitudinal direction, gas spout part 36 was sprayed on the exposure-processed gas 33 that steam generation device 31 provides on the substrate 1.

In this manner, gas spout part 36 is sprayed on exposure-processed gas 33 on the substrate 1, and the simultaneous gas injection device is along substrate 1 scanning.Therefore, just exposure-processed gas 33 can be sprayed on the substrate 1 equably.

In addition, when gas conduit 34 movably moved according to the longitudinal direction of substrate 1 along the slit of the cell 20 on top, gas spout part 36 was around its central shaft rotation.Therefore, exposure-processed gas 33 can be sprayed on the substrate 1 equably.

In the substrate handling system of mentioning 300, gas spout part 36 is moved up and down in the above according to the 3rd embodiment.For example, movably gas conduit 34 can have the sleeve structure that comprises interior pipe and outer tube, and for example, therein, interior pipe can be directed to outer tube and arbitrarily slide.Equally, gas spout part 36 is added on inner pipe, thereby gas spout part 36 can slide up and down at outer tube.Therefore, can arbitrarily control distance between substrate 1 and the gas spout part 36.

In this manner, when gas spout part 36 moves up and down, lifter board 11 and unnecessary can moving up and down.But, gas spout part 36 and lifter board 11 are moved up and down.

(the 4th embodiment)

Figure 12 shows the sectional view according to fourth embodiment of the invention substrate handling system schematic construction.As mentioned above, substrate handling system 100 according to first embodiment can be sprayed on exposure-processed gas on the substrate that is arranged in the cell equably, simultaneously, substrate handling system 400 according to the 4th embodiment can evenly be injected on the substrate that is arranged in the cell by exposure-processed gas, and also can carry out dry etch process or polishing on substrate.

In this case, can be after exposure-processed or before carry out dry etch process or polishing.Equally, can when carrying out exposure-processed, carry out dry etch process or polishing.

In Figure 12, represent to have and part according to the same 26S Proteasome Structure and Function of the substrate handling system 100 of first embodiment with identical reference number.

Except the composition that comprises the first embodiment substrate handling system, also comprise plasma generating device according to the substrate handling system 400 of present embodiment.Plasma generating device comprises cell 20 and upper electrode 410 between the gas injection dish 21 that is arranged on top and lower electrode 420, capacitor 42 and the RF high frequency electric source 423 that is arranged on lifter board 11 inside.

Upper electrode is through upper electrode lead 411 ground connection.

Equally, lower electrode 420 is through the end coupling of lower electrode lead 421 and capacitor 422 and RF high frequency electric source 423.The other end ground connection of RF high frequency electric source 423.

In according to present embodiment ground substrate handling system 400, on substrate 1, carry out exposure-processed and dry ecthing or polishing according to the mode of mentioning below.

At first, forming on substrate 1 will etched film pattern.In addition, be out of shape according to the mode similar at the photoresist film mask pattern of wanting to form on the etched film pattern (hereinafter referred to as " photoresist mask ") to first embodiment.In other words, substrate 1 is exposed in exposure-processed gas 33, thereby photoresist is dissolved and refluxes, so that make its pattern distortion.

Here, because of decomposing and refluxing when be out of shape, can want to carry out etching on the etched film at the photoresist mask, the photoresist mask that has different patterns by use on substrate 1 forms film.

Therefore, can form two kinds with wanting the same etching pattern of etched pattern.

In this case, use O ₂Plasma is carried out the process that is called polishing on the photoresist mask.

In according to the substrate handling system 400 of present embodiment, carry out following dry ecthing or polishing.In this case, dry ecthing or the polishing of carrying out in according to the substrate handling system 400 of present embodiment is similar to conventional dry ecthing or polishing.

At first, with the substrate 1 exposure-processed chamber 101 of packing into, and exposure-processed chamber 101 is evacuated, so that the residual gas in the cell is taken away.In this case, the air pressure in the exposure-processed chamber 101 is approximately 1Pa or lower.

Then, in carrying out dry etch process, such as Cl ₂/ O ₂The etching gas of/He mixed gas imports exposure-processed chamber 101 (when the metal of etching such as Cr).In carrying out polishing, such as O ₂Gas, O ₂/ CF ₄Mixed gas or the like imports exposure-processed chamber 101.

Constant air pressure in air pressure in the exposure-processed chamber 101 remains on from 10Pa to the 120Pa scope.

Then, utilize RF high frequency electric source 623 and capacitor 622 between upper electrode 410 and lower electrode 420, to carry out plasma discharge, thereby on substrate 1, carry out dry ecthing or polishing.

In the present embodiment, the electrode 420 of bottom is through capacitor 622 and RF high frequency electric source 623 ground connection.But bottom ground electrode 420 also can only pass through RF high frequency electric source 623 ground connection.

Equally in the present embodiment, upper electrode 410 direct ground connection, and lower electrode 420 is through capacitor 622 and RF high frequency electric source 623 ground connection.But, on the contrary, also can make the electrode 420 direct ground connection of bottom, and upper electrode 410 passes through capacitor 622 and RF high frequency electric sources or only passes through RF high frequency electric source 623 ground connection.

In addition, the plasma generation mechanism that produces plasma in the exposure-processed chamber 101 is not limited to produce mechanism according to the plasma of present embodiment, but can be other any mechanism that can produce plasma.

As above, according to the substrate handling system 400 of the foregoing description, just can on substrate 1, not only carry out exposure-processed but also carry out dry ecthing or polishing by enough cells.

Be used for the exposure-processed gas 33 of exposure-processed gas and the various gas that is used for dry ecthing or polishing and import exposure-processed chamber 101, perhaps generally use the pure gas introducing mechanism that it is imported exposure-processed chamber 101 through gas introducing mechanism independently.In this case, when wanting simultaneously or approximate when carrying out exposure-processed and dry ecthing or polishing simultaneously, independently gas introducing mechanism need be set.

Equally, similar to substrate handling system 200 according to second embodiment, in substrate handling system 400, the temperature control device that the temperature of upper electrode 410 and lower electrode 420 is remained on constant value can be set according to present embodiment.

(the 5th embodiment)

Figure 13 shows the sectional view according to the substrate handling system schematic construction of fifth embodiment of the invention.Substrate handling system 500 according to the 5th embodiment can be sprayed on exposure-processed gas 33 on the substrate that is arranged in the cell equably, perhaps can be as not only carrying out exposure-processed but also carry out dry process or the system of polishing.

In Figure 13, represent to have and part according to the same 26S Proteasome Structure and Function of the substrate handling system 100 of first embodiment with identical reference number.

As shown in figure 13, substrate handling system 500 comprises: the cell 501 with air intake opening 501a; Seven stage substrate processing unit 502a, 502b, 502c, 502d, 502e, 502f and 502g; With gas introducing mechanism 520.Gas introducing mechanism 520 can be identical with the gas introducing mechanism among first embodiment.

Seven stages, substrate processing unit 502a-502g was vertically set in the cell 501.The structure that any one unit among seven stage substrate processing unit 502a-502g has is roughly with to remove the structure that exposure-processed chamber 101 and gas introducing mechanism obtained from the substrate handling system of as shown in Figure 1 first embodiment identical.

Gas introducing mechanism 520 have with first embodiment in the identical structure of gas introducing mechanism, usually exposure-processed gas is offered seven each unit among the stage substrate processing unit 502a-502g.

According to the substrate handling system 100 of first embodiment of the invention is substrate handling system in batches, therein, and substrate processing one by one.On the other hand, the substrate handling system 500 of present embodiment can be handled a plurality of substrates 1 simultaneously.Therefore, when comparing, can come treatment substrate with very high treatment effeciency according to the substrate handling system 500 of present embodiment with substrate handling system 100 according to first embodiment.

Substrate handling system and existing seven the stage substrate processing unit 502a-502g of above mentioned substrate handling system according to present embodiment.But the number of substrate processing unit is not limited to seven but can be any suitable numeral greater than 1.

Same in the substrate handling system 500 according to present embodiment, each substrate handling system 502a-502g has and the similar structure of substrate handling system 100 appropriate sections according to first embodiment.But, also can according to the present invention the second, the three or the basis of the substrate handling system 200,300 of the 4th embodiment or 400 on constitute each substrate processing unit 502a-502g.

(the 6th embodiment)

Figure 14 shows the sectional view according to the substrate handling system schematic construction of sixth embodiment of the invention.Substrate handling system 600 according to present embodiment can be carried out a series of processing procedure: be transported to from atmospheric environment in the exposure-processed chamber from the substrate of carrying substrate or will handle, again substrate be transported to the processing procedure the atmospheric environment from the exposure-processed chamber after handling substrate.

Substrate handling system 600 according to present embodiment comprises three process chambers 601, reduced pressure delivery chamber 602, pressure control conveying chamber 603, conveying mechanism, be used for that substrate sent into substrate handling system 600 or with it from wherein taking out.

Reduced pressure delivery chamber 602 is communicated with chambers in three process chambers 601.The substrate that decompression process chamber 602 will be handled under the condition of decompression is sent into process chamber 601, and under the condition of decompression the substrate of handling is taken out from process chamber 601.

The pressure control conveying chamber is communicated with reduced pressure delivery chamber 602.Pressure control conveying chamber 602 received substrate under atmosphere outside before handling, and substrate sent into reduced pressure delivery chamber 602 under reduced pressure.Substrate after pressure control process chamber 603 also will be handled under reduced pressure takes out from the reduced pressure delivery chamber, and takes out substrate under atmospheric environment.

Conveying mechanism 604 is conveyed into pressure control conveying chamber 603 with substrate from the outside, and substrate is sent from pressure control conveying chamber 603.Conveying mechanism is such as many loading bins mechanism or the like.

Any one structural similarity in the substrate handling system 100,200,300,400 and 500 of the structure that each chamber has in three process chambers 601 and first to the 5th embodiment according to the present invention.

Now the working condition according to the substrate handling system 600 of present embodiment is described.

At first, under atmospheric pressure environment, send into pressure control conveying chamber 603 through the substrate that conveying mechanism 604 will be handled.

After substrate being sent into pressure control input chamber 603, pressure control conveying chamber 603 is closed by conveying mechanism 604.Reduce the air pressure in the pressure control conveying chamber 603 then and become vacuum environment.In this case, substrate is transported to reduced pressure delivery chamber 602 from pressure control conveying chamber 603.Reduced pressure delivery chamber 602 always remains vacuum state.

Then, substrate is transported to any one process chamber 601, treatment substrate in this process chamber 601 from reduced pressure delivery chamber 602.For example, on substrate, carry out exposure-processed or polishing.

After finishing dealing with, substrate is transported to reduced pressure delivery chamber 602 from process chamber 601.If desired, substrate is sent into another process chamber 601 again and is carried out another kind of the processing.

Then substrate is sent into the pressure control conveying chamber 603 of vacuum state from reduced pressure delivery chamber 602.After substrate was sent into pressure control conveying chamber 603, the air pressure in the pressure control conveying chamber 603 raise, and becomes atmospheric pressure state from vacuum state.

The lid of conveying mechanism 604 relief pressures control conveying chamber 603, and the substrate that will carry out after handling is sent into conveying mechanism 604.

Conveying mechanism 604 is delivered to substrate the outside of substrate handling system 600 then.

In this manner, use just treatment substrate continuously of substrate handling system 600.

As above mentioned, use the surface that just exposure gas roughly can be applied to equably each substrate according to substrate handling system of the present invention.Therefore, can control the backflow distance L with very high precision on the whole surface of substrate.

In addition, according to the present invention, before exposure-processed and afterwards or with exposure-processed simultaneously, can on substrate, carry out dry ecthing or polishing.

In the explanation in front, describe the present invention with reference to specific embodiment.But those of ordinary skill in the art will should be realized that under the situation that does not break away from the scope of the invention and marrow variations and modifications can be arranged.Therefore, instructions and accompanying drawing be on the descriptive sense but not on the limited significance, and all modifications will be included among the scope of the present invention.Therefore, the invention is intended to the variation and the modification that comprise that all fall into the claim scope.

Claims

1. a substrate handling system sprays to exposure-processed gas on the substrate that is arranged in the cell, and carries out by making described on-chip organic membrane dissolving make the processing of its backflow, and described substrate handling system comprises:

Cell with a plurality of air intake openings and at least one gas outlet;

Exposure-processed gas is imported gas gatherer in the described cell by described air intake opening; With

Gas distributing device,

Wherein gas distributing device is divided into described exposure-processed gas through described air intake opening first space that enters and second space that described substrate is set with the inner space of described cell,

Be formed with a plurality of openings that described first space and described second space are communicated with at described gas distributing device,

The described exposure-processed gas that described gas distributing device will import described first space imports described second space through described opening,

In described cell, described gas distributing device is configured on the position than the more close described substrate of described air intake opening,

The concentration that in described first space, makes the described exposure-processed gas that blows out from described a plurality of air intake openings evenly after, blow to described second space via described opening.

2. a substrate handling system sprays to exposure-processed gas on the substrate that is arranged in the cell, and carries out by making described on-chip organic membrane dissolving make the processing of its backflow, and described substrate handling system comprises:

Cell with a plurality of air intake openings and at least one gas outlet;

Gas distributing device,

Described exposure-processed gas contains the composition that is made of organic solvent at least,

3. substrate handling system sprays to exposure-processed gas along vertical and is arranged on each substrate of a plurality of substrates in the cell, and carries out by making described on-chip organic membrane dissolving make the processing of its backflow, and described substrate handling system comprises:

Cell with a plurality of air intake openings and at least one gas outlet;

With the gas distributing device of the corresponding setting of each substrate in described a plurality of substrates,

Wherein each described gas distributing device is divided into described exposure-processed gas through described air intake opening first space that enters and second space that described substrate is set with the inner space of described cell,

Be formed with a plurality of openings that described first space and described second space are communicated with at each described gas distributing device,

The described exposure-processed gas that each described gas distributing device will import described first space imports described second space through described opening,

4. substrate handling system sprays to exposure-processed gas along vertical and is arranged on each substrate of a plurality of substrates in the cell, and carries out by making described on-chip organic membrane dissolving make the processing of its backflow, and described substrate handling system comprises:

Cell with a plurality of air intake openings and at least one gas outlet;

With the gas distributing device of each corresponding setting in described a plurality of substrates,

The concentration that in described first space, makes the described exposure-processed gas that blows out from described a plurality of air intake openings evenly after, blow to described second space via described opening,

Described exposure-processed gas contains the composition that is made of organic solvent at least.

5. according to claim 2 or 4 described substrate handling systems, it is characterized in that, in the described organic solvent, contain (1) alcohols R-OH, (2) alkoxy alcohols, (3) ethers R-O-R, Ar-O-R, at least a in Ar-O-Ar, (4) ester class, (5) ketone, (6) glycols, (7) aklylene glycol class and (8) gylcol ether, wherein, in (1) and (2), R represents alkyl or substituted hydrocarbon radical, and Ar represents phenyl or the aromatic ring except that phenyl.

6. according to each described substrate handling system in the claim 1～4, it is characterized in that, also comprise proliferation part, described proliferation part is arranged on the inside in described first space, and the inner space of described proliferation part is communicated with through the space of a plurality of holes on the outside surface with the outside, to make the concentration of described exposure-processed gas even through the described exposure-processed gaseous diffusion of described air intake opening importing.

7. according to claim 3 or 4 described substrate handling systems, it is characterized in that described a plurality of air intake openings are corresponding one to one with described gas distributing device, each air intake opening is configured in the position corresponding with pairing gas distributing device.

8. according to each described substrate handling system in the claim 1～4, it is characterized in that it can be that the center is rotated with its center that described gas distributing device is formed.

9. according to each described substrate handling system in the claim 1～4, it is characterized in that the stand of placing described substrate is formed and can moves up and down.

10. according to each described substrate handling system in the claim 1～4, it is characterized in that the stand of placing described substrate can be rotated around its axle center.

11. according to each described substrate handling system in the claim 1～4, it is characterized in that, be arranged on substrate in the described cell and the interval between the described gas distributing device and be set to 5～15mm.

12. according to each described substrate handling system in the claim 1～4, it is characterized in that having the function of carrying out following processing: establishing atmospheric pressure is 0KPa, makes the pressure in the described cell be the processing pressure in the scope of-50KPa～50KPa.

13. according to each described substrate handling system in the claim 1～4, it is characterized in that having the function of carrying out following processing: establishing atmospheric pressure is 0KPa, makes the pressure in the described cell be the processing pressure in the scope of-20KPa～20KPa.

14. according to each described substrate handling system in the claim 1～4, it is characterized in that having the function of carrying out following processing: establishing atmospheric pressure is 0KPa, makes the pressure in the described cell be the processing pressure in the scope of-5KPa～5KPa.

15. substrate handling system according to claim 12, it is characterized in that, the extent of opening control device that comprises the extent of opening of controlling described gas outlet, by control the extent of opening of described gas outlet with this extent of opening control device, the pressure in the described cell is maintained the processing pressure of having set.

16. substrate handling system according to claim 12 is characterized in that, has described processing pressure is controlled at ± function in the error range of 0.1KPa.

17. substrate handling system according to claim 12 is characterized in that, has the above exhaust capacity of 50L/min at least.

18. a substrate handling system sprays to exposure-processed gas on the substrate that is arranged in the cell, and carries out by making described on-chip organic membrane dissolving make the processing of its backflow, described substrate handling system comprises:

Cell with a plurality of air intake openings and at least one gas outlet;

Gas distributing device,

By using dividing plate that described first space is divided into around a plurality of little space of the described air intake opening of predetermined number, be formed with hole or the gap that adjacent little space is interconnected at described dividing plate.

19. substrate handling system according to claim 18 is characterized in that, is provided with the gas flow rate control gear at each described air intake opening.