CN1577110A - Photoresist stripping liquid composition and stripping methof for photoresist using photoresist stripping liquid composition - Google Patents
Photoresist stripping liquid composition and stripping methof for photoresist using photoresist stripping liquid composition Download PDFInfo
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- CN1577110A CN1577110A CNA2004100594580A CN200410059458A CN1577110A CN 1577110 A CN1577110 A CN 1577110A CN A2004100594580 A CNA2004100594580 A CN A2004100594580A CN 200410059458 A CN200410059458 A CN 200410059458A CN 1577110 A CN1577110 A CN 1577110A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
Abstract
In the process for manufacturing semiconductor device, liquid crystal device and the like, the photoresist which was deteriorated or hardened in a wet etching or dry etching process can be exfoliated by the invention with a dipping process, spraying method or sheet method easily in low temperature and short time. As to metal wiring, particularly metal membrane of the multi-junction structure containing copper, exposed to an exfoliation solution, a substrate with an inorganic material layer having excellent anti-corrosion capability is provided. In the subsequent rinse process, it is possible to carry out a rinse only with water without using an organic solvent like isopropyl alcohol and dimethyl sulfoxide. Moreover, the environmental is affinity photoresist stripper composition without adding an alkyl pyrrolidone compound and a sulfone compound or a sulfoxide compound, and a benzotriazol compound.
Description
Technical field
The invention relates to the stripping means of the photoresist of photoresist remover composition and use photoresist remover composition.In more detail, be about in the manufacturing process of semiconductor element and liquid crystal display cells etc., the stripping means that is used to peel off the remover composition of photoresist film residual after wet etching and dry ecthing operation and uses the photoresist of remover composition.
Background technology
The manufacturing of semiconductor element or liquid crystal display cells is normally carried out on semiconductor chip or glass substrate successively: the metal wiring that metal, inorganic material or oxidation film layer are set forms operation; The operation of photoresist layer is set; The exposure process of transcription mask graph on photoresist; According to figure film is carried out etched etching work procedure; And the stripping process of removing photoresist.Accompanying drawing is to illustrate that successively utilization forms the figure of operation as the metallic pattern of above exposure process, etching work procedure and stripping process.
Recently, ultra micro refinement tendency owing to the highly integrated figure that causes of semiconductor element and liquid crystal display cells, the strictness that becomes of the etching condition of metal or oxide film is uprised by the occurrence frequency of cause rotten of etching work procedure or the photoresist that solidifies.Concrete etching work procedure is divided into, and uses the wet etching of electrochemical reaction and the dry ecthing of the free radical reaction of the etching gas that uses plasmaization.For photoresist rotten or that solidify takes place behind such etching work procedure, even utilize common existing photoresist stripper also to be difficult to remove.If not exclusively remove the photoresist of so rotten or curing, photoresist residue then, in subsequent handling, will become the main cause of broken string and short circuit, also can become the reason that the qualification rate in the productions such as semiconductor element or liquid crystal display cells reduces.In addition, along with the ultra micro refinement of the highly integrated and figure of semiconductor element, resistance of the metal that uses in semiconductor element (wiring resistance) and the distribution delay etc. of distribution capacity of resulting from are just becoming problem.In order to improve wiring resistance, proposed to use than the little metal of resistance of the main aluminium (Al) that uses in the past as wiring material, copper (Cu) etc. for example, this is in the stage of practicability.
As the solution of peeling off patterned photoresist layer is remover, can enumerate mineral acid, inorganic base or organic solvent usually, for example potpourri of halogenated organic solvent, alkyl benzene sulphonate, aromatic hydrocarbon solvent and alkyl benzene sulphonate etc., as the effective constituent of remover, when using mineral acid or inorganic base, or make the lower metal erosion, or follow the difficulty in the operation of the shortcoming that is harmful to human body etc., therefore usually with an organic solvent, recently, the amine series stripping agents that contain polar solvent and amine that use more.
In the amine series stripping agent combination, knownly inject or the resist film amine component of the crosslinked combination that other the manufacturing process of LSL device causes is necessary composition removing effectively by baking, plasma etching, ion.But amine is the photoresist release agent, usually causes the such deep problem of corrosion, especially when using aluminium or copper base more very.
Think that such corrosion is, behind stripping bench, remover composition remains on substrate surface or the substrate carrier, after making water-to peel off the stage of cleaning, the ionized water by residual amine is corroded.In other words, the amine component of stripping composition though itself do not corrode substrate, has the possibility of the excitation of playing as water causes corrosion.Except such etching problem, because the difference of the solubleness of material in remover and water, when directly washing behind stripping process, the material that dissolves in the residual remover composition is also often separated out.
In order to solve such problem, at stripping bench with after making water-to peel off between the stage of cleaning, the stage is cleaned in the centre of introducing with an organic solvent.
Know that for example isopropyl alcohol or dimethyl sulfoxide etc. are useful in such purpose.In addition, proposed for other material, having added peeling off the amine that after-stage can relax the anticorrosive of the etching problem that is caused by residual amine is stripping composition.
Proposition is as follows as the example of the document of above solution countermeasure.
U.S. Patent bulletin discloses for No. 4617251, [for example contain the certain amines compound, 2-(2-ammonia ethoxy) ethanol, 2-(the amino ethylamino of 2-) ethanol, perhaps their potpourri] and the particular polarity solvent is (for example, the N-N-methyl-2-2-pyrrolidone N-, the tetrahydro propyl alcohol, different phorone, dimethyl sulfoxide, dimethyl adipate, dimethyl glutarate, sulfolane, gamma-butyrolacton, N, N-dimethyl acetamide and their potpourri) the positive light anti-etching agent remover composition, in addition, U.S. Patent bulletin discloses for No. 4770713, (for example contain specific amide compound, N, the N-dimethyl acetamide) and the certain amines compound (for example, one ethane amine) positive light anti-etching agent remover composition, in addition, U.S. Patent bulletin discloses for No. 4824763, (for example contain triamine, diethylene triamine) and non-polar solvent (for example, the N-N-methyl-2-2-pyrrolidone N-, dimethyl formamide, butyrolactone etc.) positive light anti-etching agent remover composition, in addition, U.S. Patent bulletin discloses for No. 5279791, contains hydramine (for example hydramine), the alkanolamine and the remover composition of polar solvent arbitrarily.
U.S. Patent bulletin has proposed for No. 4786578, peels off the clean solution that use the back at photoresist, but described clean solution, contains non-ionic surfactant (for example, ethoxylated alkyl phenols) and organic base (for example, one, two or triethylamine).
U.S. Patent bulletin discloses for No. 4824762, (for example contain glycol ether, diethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether) and aliphatic amine is (for example, monoethanolamine or triisopropanolamine) photoresist peel off back-clean solution, but described back-clean solution is non-aqueous.
U.S. Patent bulletin discloses for No. 4904571, (for example contain solvent, water, alcohol, ether, ketone etc.), be dissolved in the described solvent alkali compounds (for example, primary amine, secondary amine, tertiary amine, quaternary amine, ring type amine, polyamines, quaternary ammonium amines, hydroxide sulfonium and alkaline hydrated oxide etc.) and be dissolved in the photoresist release agent of the tellite of the hydrogenated boron compound (for example, sodium borohydride, dimethylamine phorone, pyridine phorone etc.) in the described solvent.
International publication WO has proposed for 88-05813 number, contains butyrolactone or caprolactone, quaternary phosphonium hydroxides ammonium compounds and the eurymeric or the negative type photoresist remover of nonionic surfactant arbitrarily.
No. the 5478443rd, U.S. Patent bulletin and U.S. Patent bulletin have proposed for No. 5320709, use specific organic anti-corrosive erosion agent (ethylene glycol and dimethyl sulfoxide) and fluorochemicals (ammonium fluoride, hydrofluorite, perfluor acid etc.) to solve the problem of metal erosion.But these compositions need dissolve the organic solvent of volume, and therefore the such shortcoming of discarded object that must remove volume is arranged.
Removing of residue after the etching is very difficult, therefore U.S. Patent bulletin has proposed for No. 5612304, contains the polar solvent of specified conditions, specific alkanolamine, the remover composition that has the amino acid of hydroxyl and have the reductant-oxidant of specific redox potential energy.Illustrated in above-mentioned document, used the amino acid with hydroxyl as anticorrosive, organic or mineral acid reduces the alkalescence that contains the amine mold release solution, makes the peeling force deterioration.
U.S. Patent Publication has proposed for 2002-0068244 number, contains alkylene carbonates, organic peroxide and N-and replaces at least a corrosion inhibitor stripper in the morphine.
The open communique of Korean Patent has proposed for 2001-0018377 number, contains the corrosion inhibitor stripper of amines, ethylene glycol series solvent, perfluoroalkyl oxirane.
The open communique of Korean Patent has proposed for 2000-0016878 number, is that polar material, damage more than or equal to 3 prevents the remover composition that agent and alkanolamine are formed by alkoxyl N-hydroxy alkyl alkane amine, dipole square.
The open communique of Korean Patent has proposed for 2001-0040496 number, uses pyridone (pyriminone) compound, is applied to the remover composition of the eurymeric resist of linear phenol-aldehyde resin/quinone di-azido compound system.
U.S. Patent bulletin has proposed for No. 5480585 and Japanese kokai publication hei 5-281753 number, and containing chemical structural formula is H
3-nN ((CH
2)
mOH)
nAlkanolamine, sulphones or sulfoxide compound and the chemical structural formula of (m is 2 or 3, and n is 1,2 or 3) are C
6H
6-n(OH)
nThe organic remover of photoresist of the hydroxyl compound of (n is 1,2 or 3).
Proposed for Japanese kokai publication hei 4-124668 number, by the organic amine of 20 weight %～90 weight %, the phosphate of 0.1 weight %～20 weight %, the 2-butine-1 of 0.1 weight %～20 weight %, the 4-two pure and mild photoresist remover combinations of forming as ethylene glycol one alkyl ether and/or the non-proton property polar solvent of surplus.
At this, as ethylene glycol one alkyl ether, use ethylene glycol monoethyl ether, diglycol monoethyl ether, diethylene glycol-butyl ether etc., as non-proton property polar solvent, use dimethyl sulfoxide, N,N-dimethylacetamide etc., for the organic amine that prevents the photoresist moisture absorption corrodes metal levels such as aluminium and copper, in the limit that does not reduce peel property, add 2-butine-1,4-two pure and mild phosphate ester surfactants.
Proposed for Japanese kokai publication sho 64-42653 number, contain more than or equal to 50 weight %, be preferably greater than or equal the dimethyl sulfoxide of 70 weight %, and contain 1 weight %～50 weight % be selected from diglycol one alkyl ether, diglycol dialkyl ether, gamma-butyrolacton and 1, the photoresist remover composition of the nitrogenous organic hydroxy compounds such as monoethanolamine of at least a solvent and 0.1 weight %～5 weight % in 3-dimethyl-2-imidazolone.
Put down in writing at this, during less than 50 weight %, fissility reduces significantly at dimethyl sulfoxide, and when nitrogenous organic hydroxy compounds solvent surpassed 5 weight %, the metal level of aluminium etc. was corroded.
The open communique of Korean Patent has proposed for 1999-0062480 number, to be consisted of the stripper of feature by organic amine compound, protic glycol ether compound, non-proton property multipolarity compound and alkyl pyrrolidine ketonic compound.
The open communique of Korean Patent has proposed for 2000-0008103 number, contains the alkanolamine of 5 weight %～15 weight %, sulfoxide or sulphones, the glycol ether of 35 weight %～55 weight % and the photoresist remover composition of surfactant of 35 weight %～55 weight %.
Put down in writing at this, when alkanolamine surpassed 15 weight %, perhaps sulfoxide or sulphones were during less than 35 weight %, diminish with the complete membranous absorbability of LCD, and it is big that contact angle becomes, and utilizes pneumatic stripping performance to reduce.
U.S. Patent bulletin discloses for No. 5174816, contains by the quaternary ammonium hydroxide as trimethyl (2-hydroxyethyl) ammonium hydroxide of 0.01 weight %～15 weight %, the sugar as xylitol, mannose, glucose etc. of 0.1 weight %～20 weight % or composition aqueous solution, that be used to remove chlorine residual on the surface of the aluminum steel figure substrate after the dry ecthing that sugar alcohol constitutes.
Disclose for Japanese kokai publication hei 7-028254 number, the anti-corrosion film of non-aggressive that contains sugar alcohol, hydramine, water and quaternary ammonium hydroxide is removed liquid.
Disclose for Japanese kokai publication hei 7-247498 number, contained the detergent remover of quaternary ammonium hydroxide, sugar or sugar alcohol, carbamide compound.
The open communique of Korean Patent discloses for 2001-0106537 number, the organic amine compound that contains 3 weight %～10 weight %, the N of 30 weight %～60 weight %, N-dimethyl acetamide (DMAc), N, dinethylformamide (DMF), 1,3-dimethyl-2-imidazolone (DMI), N-N-methyl-2-2-pyrrolidone N-(NMP) equal solvent, the water of 30 weight %～60 weight %, the catechol of 1 weight %～10 weight %, resorcinol, perhaps their potpourri, and the anticorrosive additive stripping liquid controlling composition of the straight chain polyvalent alcohol that 4～6 carbon atoms are arranged of 1 weight %～10 weight %.
The open communique of Korean Patent discloses for 2001-0062828 number, the photoresist stripper that contains nitrogenous organic hydroxyl amine, water-miscible organic solvent (for example, N-N-methyl-2-2-pyrrolidone N-(NMP) and dimethyl sulfoxide), water and specific benzotriazole based compound and constitute.
But, the organic solvent remover that in such a prior art, proposes, environment for use objectionable impurities alkyl pyrrolidine ketonic compound and sulphones or sulfoxide compound etc. are as organic solvent, its stripping ability to photoresist and residue is not enough, dissolving power to the polymer substance that forms photoresist also is not enough, therefore for the residue of the photoresist of having peeled off, or again attached on semiconductor chip or the glass substrate etc., or not only generate additional solvent accessory substance, and because of process conditions be high temperature, and aspect environment and the disposal cost aspect be disadvantageous, on clean residue, be restricted, have and in follow-up flushing operation, have to use as isopropyl alcohol, the problem of the organic solvent of dimethyl sulfoxide.
In addition, described existing remover composition, can not simultaneously balancedly reach the fissility of the corrosion that prevents substrate and photoresist film and the rotten film of photoresist well, described substrate is for forming metal wiring, particularly comprising the substrate of multiple jointing metal distribution of copper or the substrate of formation metal wiring and inorganic material.
Especially, because the nearest semiconductor element and the maximization of liquid crystal display cells and a large amount of production, compare with dipping (Dipping) method as the use-pattern of existing remover, use spray-on process (Spray), perhaps monolithic (the Single wafer system) mode handled of a slice a slice, the photoresist of pneumatic mode is peeled off mode and is just generalized, and wishes that therefore exploitation is in such spray-on process, be fit in single chip mode and the pneumatic mode, at the metal wiring affine remover composition of environment that can peel off under not corroding of two sides of copper wiring and inorganic material layer particularly.
Summary of the invention
Therefore, the technical task that the present invention will solve provides, to photoresist rotten or that solidify takes place in wet etching or dry ecthing operation, use infusion process, spray-on process, single chip mode, perhaps pneumatic mode, at low temperature, can peel off easily in short time, particularly to comprise the anticorrosive property of substrate of the membranous and inorganic material layer of the metal of multiple connected structure of copper good to being provided with the metal wiring that is exposed to stripping solution, in follow-up flushing operation, do not need to use as isopropyl alcohol, the organic solvent that dimethyl sulfoxide is such, water just can be washed, do not add environmentally hazardous substance alkyl pyrrolidine ketonic compound and sulphones or sulfoxide compound, the photoresist remover composition that environment is affine.
The other technologies problem that the present invention also will solve provides, and uses described remover composition to peel off the method for photoresist film.
In order to reach described technical task, the invention provides, the relative total amount of composition contains compound, 0.1 weight %～anticorrosive of 10 weight % and the stripping solution of balance of deionized water of following chemical structural formula 1 of glycol ether compound, the 0.01 weight %～1 weight % of organic amine compound, the 5 weight %～50 weight % of 5 weight %～50 weight %.
Chemical structural formula 1
(in the formula, X is C or N, and at least one is N.Wherein, R
4, R
5Be hydrogen atom, alkyl, aryl, aralkyl, halogen, three halogenation methyl, amino, heterocycle, NHR
6, NR
7R
8, CN, CO
2H, CO
2R
9, OH or OR
10Base, at this moment, R
6～R
10Represent alkyl, aryl or aralkyl respectively.)
In addition, other technologies problem of the present invention, the stripping means of compound, 0.1 weight %～anticorrosive of 10 weight % and the remover composition of balance of deionized water of chemical structural formula 1 that contains glycol ether compound, the 0.01 weight %～1 weight % of organic amine compound, the 5 weight %～50 weight % of 5 weight %～50 weight % by the total amount of using relative composition reaches.
As according to stripping means for the photoresist that reaches described other technologies problem, the stripping means of photoresist and polymkeric substance just can be provided, it is characterized by, the substrate that is provided with photoresist film is contacted with remover composition.
Described composition can contain surfactant, defoamer or their potpourri etc. as the adjuvant that adds usually in stripping solution.
As the object lesson of the organic amine compound that in clean composition of the present invention, uses, can enumerate monoethanolamine, diethanolamine or triethanolamine, monopropylene glycol amine, dipropanolamine or tripropanol amine, an isopropanolamine, diisopropanolamine or triisopropanolamine, butanolamine, butyl monoethanolamine, ethyldiethanolamine, N-methylaminoethanol etc.In the present invention, as amines, preferred monoethanolamine, diethanolamine, triethanolamine, N-methylaminoethanol, isopropanolamine or their potpourri, more preferably monoethanolamine, N-methylaminoethanol, isopropanolamine or their potpourri.
In general, the glycol ether derivant is can the affine organic solvent of biodegradable environment, has ether and hydroxyl in molecule simultaneously, and as the utmost point excellent solvent that can mix well with water, it has purposes widely.Add the effect that such gylcol ether can play a kind of surfactant, the surface tension of solution is reduced and the raising power of impregnation, thereby strengthen the stripping ability of stripping solution at lower temperature.
The glycol ether compound of Shi Yonging generally is aklylene glycol one ether in the present invention.Concrete example can be enumerated following compound etc.
CH
3CH
2CH
2CH
2-OCH
2CH
2-OH；
CH
3CH
2CH
2CH
2-OCH
2CH
2-OCH
2CH
2-OH；
CH
3CH
2CH
2CH
2-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OH；
CH
3CH
2CH
2CH
2-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OH；
CH
3-OCH
2CH
2-OH；
CH
3-OCH
2CH
2-OCH
2CH
2-OH；
CH
3-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OH；
CH
3-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OCH
2CH
2-OH；
CH
3-OCH
2CH
2CH
2-OH；
CH
3-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OH；
CH
3-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OH；
CH
3-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OCH
2CH
2CH
2-OH。
Particularly preferred glycol ether compound is ethylene glycol monobutyl ether (EGMBE), butylcarbitol, triethylene glycol monobutyl ether or their potpourri.
The compound of the chemical structural formula 1 that uses among the present invention contains 4～5 nitrogen-atoms altogether in molecule, also contain more nitrogen-atoms than the benzotriazole that uses as the copper anticorrosive usually.
The superfluous nitrogen-atoms that contains in the compound can increase the number positional that is attached on metal surface and the metallic ion.If observe the combination on benzotriazole and copper surface, show the integrated structure that the intensive part of nitrogen tilts in the surface coordination combination, but the compound of chemical structural formula 1, contain all nitrogen-atoms of molecule, combine abreast with the surface, thereby show more stable integrated structure, just obtain equal effect with still less addition.
In addition, there is the environmental problem of not degrading by microorganism in benzotriazole cpd, but the compound of chemical structural formula 1 has biodegradable this advantage.
Generally, the compound of the chemical structural formula 1 that uses among the present invention is purine, adenine, 6-methoxyl purine, 6-chaff adenine phosphate and urea acid, and the compound of particularly preferred chemical structural formula 1 is purine, adenine, urea acid or their potpourri.
In stripping solution composition, deionized water in the present composition makes the activation of described organic amine compound, plays to make the caused lower metal corrosion of hydroxyl that produces in effect that the photoresist stripping ability strengthens and the operation to direct water flushing that abirritation be arranged.
As the anticorrosive in the present composition, the compound of the hydroxyl that can use is used for neutralizing is generated by amine, for example organic acid compound or glycitols etc.As glycitols, can enumerate D-sorbite as the straight chain polyvalent alcohol, sweet mellow wine, Soviet Union's colloidal sol, xylitol etc., wherein, special is good with D-sorbite, sweet mellow wine, xylitol or their potpourri.
For described D-sorbite, sweet mellow wine, xylitol or their potpourri, the hydrogen ion of organic amine and water reacts and the hydroxylation ion that produces, surface of contact between photoresist layer and substrate, play the effect that to soak into effectively, form with polymkeric substance in the metallics that contains chelatropic reaction and improve stripping ability, form and lower metal layer, particularly the chelatropic reaction of copper, aluminium, tungsten, molybdenum, chromium, titanium, ITO (tin indium oxide) plays preventing to make lower metal layer that the corrosion-resisting function of corrosion take place from the hydroxyl that stripping solution composition produces.
In addition, for described composition, in order to improve the homogeneity of peeling off, can use surfactant as adjuvant, the amount of adjuvant but is that the amount of benchmark adjuvant is 0.001 weight %～10 weight % with the whole composition without limits, preferably 0.001 weight %～5 weight %.
For stripping composition of the present invention, in the semiconductor manufacturing process of picture LSL element, liquid crystal panel etc., to constituting the material of semi-conductive oxide film and picture copper, aluminium, tungsten, molybdenum, chromium, titanium, ITO metal film, it has extremely low corrosivity, and the metal of multiple connected structure that is particularly suitable for cupric is membranous.
In order to obtain stripping composition of the present invention, described compound can amount in accordance with regulations advantageously mix, and mixed method has no particular limits, and can use various known method.
In other technical task of the present invention, stripping means of the present invention can preferentially be chosen in to remove and take place rotten in wet etching and the dry ecthing operation or use during the photoresist that solidifies.
Stripping means can utilize that generally well-known stripping means carries out in this specialty, if stripping solution and the method that the substrate that is provided with photoresist film and polymkeric substance can contact just can access good result.
As stripping means of the present invention, used the method etc. of infusion process, spray-on process, single chip mode and pneumatic mode to be suitable for.
When using infusion process, spray-on process, single chip mode and pneumatic mode to peel off, as stripping conditions, temperature is about 10 to 100C, preferably 20 to 80 ℃, dipping and spray time are about 5 seconds to 30 minutes, preferably 10 seconds to 10 minutes, but stripping conditions is not strict in the present invention, because of different professionals can easily be suitable for.
Stripping composition of the present invention, it is good that removing on the performance of rotten or the photoresist that solidifies taken place in wet etching and dry ecthing operation, for looking like the formation semiconductor element and the metal film of liquid crystal display cells, the inorganic material material of oxide film, corrosivity is extremely low, the result is, it can use in the stripping process as the semiconductor element of LSL element, liquid crystal panel etc.
Description of drawings
Fig. 1 to Fig. 4 is the figure of formation operation that exposure process, etching work procedure is described successively and utilizes the metallic pattern of stripping process.
Fig. 1 is illustrated in and stacks gradually the substrate surface that forms by semiconductor chip or glass substrate 10, metal, inorganic material or oxidation film layer 20 photoresist layer 30 is set.
Fig. 2 represents by having formed the mask of compulsory figure, position at the figure that should form described photoresist film surface, irradiation ultraviolet radiation, electron beam or X ray are such has high-octane dynamic rays, after forming the sub-image of described figure, carry out video picture with developer solution, thereby form the photoresist figure.
Fig. 3 represents by after the formation position of figure being carried out wet etching and dry ecthing and forming figure, as shown in Figure 4, removes at figure with stripping solution and to form the residual photoresist in back.
Symbol description
10 semiconductor chips or glass substrate
20 metals, inorganic material or oxidation film layer
30 photoresist layers
Embodiment
Embodiment
Below, describe the present invention in more detail with reference to following embodiment, but the invention is not restricted to this
Embodiment.
Under treatment conditions as described in Table 2, substrate is immersed in the stripping solution of being made by the compound shown in the table 1, behind deionized water rinsing, with sweep electron microscope (SEM) (Hitachi, S-4700) observed result.Evaluation is shown in Table 2 to the stripping ability of photoresist film, to the anti-corrosion capability of metal level and lower layer.The metewand of SEM is as follows.
[stripping ability]
◎: good
△: common
*: bad
[anti-corrosion capability]
◎: good
△: common
*: bad
Table 1a
| Organic amine compound | The glycol ether compound | The compound of Chemical formula 1 | Anticorrosive | Deionized water | |
| ??1 | ??TMAH(5％) | ??- | ????- | Surplus | |
| ??2 | ??MEA(10％) | ??EG(90％) | ??- | ????- | ???- |
| ??3 | ??MEA(10％) | ??PG(90％) | ??- | ????- | ???- |
| ??4 | ??MEA(10％) | ??TEG(90％) | ??- | ????- | ???- |
| ??5 | ??MIPA(10％) | ??BDG(90％) | ??- | ????- | ???- |
| ??6 | ??MIPA(10％) | ??BDG(50％) | ??- | ????- | Surplus |
| ??7 | ??MIPA(10％) | ??BDG(30％) | ??- | Catechol (1%) | Surplus |
| ??8 | ??MIPA(10％) | ??BDG(30％) | Purine (0.05%) | ????- | Surplus |
| ??9 | ??MIPA(10％) | ??BDG(30％) | ??- | Catechol (1%) | Surplus |
| ??10 | ??MIPA(10％) | ??BDG(30％) | ??- | Catechol (1%)+Soviet Union's colloidal sol (1%) | Surplus |
| ??11 | ??MIPA(10％) | ??BDG(50％) | ??- | ???BTA(1％) | Surplus |
| ??12 | ??MIPA(10％) | ??BDG(30％) | ??- | BTA (1%)+Soviet Union's colloidal sol (1%) | Surplus |
| ??13 | ??MEA(20％) | ??BDG(30％) | Purine (0.05%) | Soviet Union's colloidal sol (1%) | Surplus |
Table 1b
| Organic amine compound | The glycol ether compound | The compound of Chemical formula 1 | Anticorrosive | Deionized water | |
| ????14 | ????MEA ????(20％) | ????BDG ????(50％) | Purine (0.05%) | Soviet Union's colloidal sol (1%) | Surplus |
| ????15 | ????MIPA ????(10％) | ????BDG ????(10％) | 6-methoxyl purine (0.01%) | D-sorbite (1%) | Surplus |
| ????16 | ????MIPA ????(10％) | ????EGB ????(20％) | 6-chaff adenine phosphate (0.01%) | Xylitol (2%) | Surplus |
| ????17 | ????MIPA ????(10％) | ????TEGB ????(30％) | Uric acid (0.1%) | Mannitol (5%) | Surplus |
| ????18 | ????MEA ????(30％) | ????TEGB ????(30％) | Purine (0.5%) | Mannitol (5%) | Surplus |
| ????19 | ????MEA ????(30％) | ????BDG ????(30％) | Adenine (0.05%) | Soviet Union's colloidal sol (1%) | Surplus |
| ????20 | ????MEA ????(10％) | ????BDG ????(50％) | Purine (0.1%) | D-sorbite (1%) | Surplus |
| ????21 | ????MEA ????(20％) | ????BDG ????(10％) | Purine (0.5%) | D-sorbite (1%) | Surplus |
| ????22 | ????MEA ????(30％) | ????EGB ????(20％) | Adenine phosphate (0.5%) | Xylitol (2%) | Surplus |
| ????23 | ????MEA ????(30％) | ????TEGB ????(30％) | Purine (0.5%) | Mannitol (5%) | Surplus |
| ????24 | ????MIPA ????(30％) | ????BDG ????(30％) | Adenine (0.5%) | Xylitol (1%) | Surplus |
Annotate) TMAH: tetramethyl ammonium hydroxide
MEA: monoethanolamine
MIPA: isopropanolamine
BDG: butylcarbitol
EGB: ethylene glycol monobutyl ether (EGMBE)
TEGB: triethylene glycol monobutyl ether
EG: ethylene glycol
PG: propylene glycol
TEG: triethylene glycol
BTA: benzotriazole
Table 2a
| Treatment conditions | Stripping ability | Anti-corrosion capability | |||
| Temperature (℃) | Time (minute) | ????Cu | Multiple jointing metal layer | ||
| ????1 | ????40 | ????10 | ????◎ | ????× | ????× |
| ????2 | ????40 | ????10 | ????△ | ????× | ????× |
| ????3 | ????40 | ????10 | ????△ | ????× | ????× |
| ????4 | ????40 | ????10 | ????△ | ????× | ????× |
| ????5 | ????40 | ????10 | ????△ | ????× | ????× |
| ????6 | ????40 | ????10 | ????△ | ????× | ????× |
| ????7 | ????40 | ????10 | ????◎ | ????× | ????△ |
| ????8 | ????40 | ????10 | ????△ | ????◎ | ????△ |
| ????9 | ????40 | ????10 | ????△ | ????× | ????△ |
| ????10 | ????40 | ????10 | ????◎ | ????× | ????△ |
| ????11 | ????40 | ????10 | ????△ | ????△ | ????△ |
| ????12 | ????40 | ????10 | ????◎ | ????△ | ????△ |
| ????13 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
Table 2b
| Treatment conditions | Stripping ability | Anti-corrosion capability | |||
| Temperature (℃) | Time (minute) | ????Cu | Multiple jointing metal layer | ||
| ????14 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????15 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????16 | ????40 | ????10 | ????◎ | ????◎～△ | ????◎ |
| ????17 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????18 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????19 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????20 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????21 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????22 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????23 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| ????24 | ????40 | ????10 | ????◎ | ????◎ | ????◎ |
| Room temperature | ????10 | ????◎ | ????◎ | ????◎ | |
The invention effect
According to photoresist agent stripping solution of the present invention, for photoresist rotten or that solidify occurs in wet etching or dry ecthing operation, by infusion process, spray-on process, single chip mode or pneumatic mode, at low temperature, can peel off easily in the short time, to picture be exposed to lower copper, aluminium, tungsten, molybdenum, chromium, the titanium of stripping solution, the material of ITO metal film has extremely low corrosivity, has a good anticorrosive property to the metal of the multiple connected structure of cupric is membranous especially. When using photoresist agent stripping solution of the present invention, in follow-up flushing operation, do not need to use the organic solvent as isopropyl alcohol, methyl-sulfoxide, water just can be washed. In addition, can be provided at and not add under alkyl pyrrolidine ketonic compound, sulphones or sulfoxide compound, the benzotriazole cpd, use the affine photoresist agent stripping solution of environment of biodegradable organic solvent.
Claims (12)
1, photoresist remover composition, it is characterized in that, the total amount of relative composition, it contains the compound, anticorrosive and the balance of deionized water of 0.1 weight %～10 weight % of following chemical structural formula 1 of glycol ether compound, the 0.01 weight %～1 weight % of organic amine compound, the 5 weight %～50 weight % of 5 weight %～50 weight %
Chemical structural formula 1
In the formula, X is C or N, and at least one is N, wherein, and R
4, R
5Be hydrogen atom, alkyl, aryl, amino, heterocycle, carbonyl, OH or OR base, R represents alkyl or aryl respectively.
2, photoresist remover composition according to claim 1, it is characterized in that described organic amine compound is monoethanolamine, diethanolamine, triethanolamine, Propanolamine, dipropanolamine, tripropanol amine, isopropanolamine, diisopropanolamine, triisopropanolamine, butanolamine, butyl monoethanolamine, N-methylethanolamine, ethyldiethanolamine or their potpourri.
3, photoresist remover composition according to claim 2 is characterized in that, described organic amine compound is monoethanolamine, N-methylethanolamine, isopropanolamine or their potpourri.
4, photoresist remover composition according to claim 1 is characterized in that, described glycol ether compound is ethylene glycol monobutyl ether (EGMBE), butylcarbitol, triethylene glycol monobutyl ether or their potpourri.
5, photoresist remover composition according to claim 1 is characterized in that, the compound of described chemical structural formula 1 is purine, adenine, 6-methoxyl purine, 6-chaff adenine phosphate, urea acid or their potpourri.
6, photoresist remover composition according to claim 5 is characterized in that, the compound of described chemical structural formula 1 is purine, adenine, urea acid or their potpourri.
7, photoresist remover composition according to claim 1 is characterized in that, described anticorrosive is the straight chain polyvalent alcohol.
8, photoresist remover composition according to claim 7 is characterized in that, described straight chain polyvalent alcohol is D-sorbite, sweet mellow wine, Soviet Union's colloidal sol, xylitol or their potpourri.
9, photoresist remover composition according to claim 1 is characterized in that, described composition contains surfactant as adjuvant.
10, photoresist remover composition according to claim 1 is characterized in that, the content of described deionized water is 30 weight %～70 weight %.
11, according to each the described photoresist remover composition in the claim 1～10, it is characterized in that it takes place to use when photoresist rotten or that solidify is peeled off in the wet etching of the substrate that will be formed by metal wiring and inorganic material layer or dry ecthing operation.
12, photoresist remover composition according to claim 11 is characterized in that, the metal wiring that is exposed in the remover composition is the metal wiring of the single or multiple connected structure of cupric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR42149/2003 | 2003-06-26 | ||
| KR1020030042149A KR100964801B1 (en) | 2003-06-26 | 2003-06-26 | Photoresist stripper composition, and exfoliation method of a photoresist using it |
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| Publication Number | Publication Date |
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| CN1577110A true CN1577110A (en) | 2005-02-09 |
| CN1275100C CN1275100C (en) | 2006-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100594580A Expired - Fee Related CN1275100C (en) | 2003-06-26 | 2004-06-28 | Photoresist stripping liquid composition and stripping methof for photoresist using photoresist stripping liquid composition |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2005043873A (en) |
| KR (1) | KR100964801B1 (en) |
| CN (1) | CN1275100C (en) |
| TW (1) | TWI275904B (en) |
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- 2004-06-25 JP JP2004188288A patent/JP2005043873A/en active Pending
- 2004-06-25 TW TW093118729A patent/TWI275904B/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100964801B1 (en) | 2010-06-22 |
| KR20050001811A (en) | 2005-01-07 |
| CN1275100C (en) | 2006-09-13 |
| TWI275904B (en) | 2007-03-11 |
| JP2005043873A (en) | 2005-02-17 |
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