摘要:
While it is important in the photolithographic patterning of a photoresist layer on a substrate surface for the manufacture of various electronic devices that the pattern-wise light exposure of the photoresist layer is preceded by partial removal of the photoresist layer on the non-patterning areas such as marginal areas, peripheral areas and back surface opposite to the surface for resist patterning by dissolving away the extraneous photoresist layer with a remover solvent, the invention proposes an improvement in the partial removal of the photoresist layer by using a specific organic solvent or solvent mixture selected relative to the surface tension of the solvent which, in particular, is a mixture of .gamma.-butyrolactone and anisole in a mixing ratio of 70:30 to 97:3 by weight.
摘要:
In a method of removing a coating from an edge of a substrate a solvent reservoir is filled with a solvent to dissolve and remove a photoresist film, the solvent includes one of dipropylene glycol monoalkyl ether, a mixture of this ether and an easily volatile organic solvent (boiling point of 75-130.degree. C., vapor pressure of 5-75 mmHg at 20.degree. C.), and an alkaline aqueous solution, an edge of a substrate W is horizontally inserted in the reservoir, and thereafter, the edge of the substrate W is immersed in the solvent for a period of time, so as to dissolve and remove a coating such as photoresist from the edge of the substrate. The solvent may be filled into the solvent reservoir either before or after the edge of the substrate is inserted therein, and the method may further involve aspirating the solvent from the reservoir after the substrate edge has been inserted therein.
摘要:
A chemically amplified positive-type photoresist composition for a thick film capable of forming a thick film resist pattern having superior resolving ability and controllability of dimensions, and being favorable in rectangularity, as well as a method for producing a thick film resist pattern using such a composition. The photoresist composition comprises an acid generator including a cationic moiety and an anionic moiety, and a resin whose alkali solubility increases by the action of an acid.
摘要:
Problem: To provide a cleaning liquid and a cleaning method having excellent leaning capability. In a process of liquid immersion lithography, they can preventing the damage to be caused by the component released from the photoresist to photoexposure devices; the waste treatment is easy; the efficiency in substitution with the cleaning liquid for the medium for liquid immersion lithography is high, and the production cost is reduced not detracting from the throughput in semiconductor production.Means for Solution: A cleaning liquid to be used for cleaning a photoexposure device in a process of liquid immersion lithography, which comprises at least 5% by mass of a nonionic surfactant containing at least one group selected from an ethyleneoxy group, a propyleneoxy group and a polyglycerin group, and a balance of water; and a cleaning method using it.
摘要:
The object is to provide a surface treatment agent that can effectively prevent pattern collapse of an inorganic pattern or resin pattern provided on a substrate, and a surface treatment method using such a surface treatment agent. In addition, as another object, the present invention has an object of providing a surface treatment agent that can carry out silylation treatment to a high degree on the surface of a substrate, and a surface treatment method using such a surface treatment agent. The surface treatment agent used in the surface treatment of a substrate contains a silylation agent and a silylated heterocyclic compound.
摘要:
The invention provides a novel rinse solution used in the step of rinse treatment of a patterned photoresist layer developed with an aqueous alkaline developer solution in a photolithographic process for the manufacture of semiconductor devices and liquid crystal display panels. The rinse solution provided by the invention is an aqueous solution of a nitrogen-containing heterocyclic compound such as imidazoline, pyridine and the like in a concentration up to 10% by mass. Optionally, the rinse solution of the invention further contains a water-miscible alcoholic or glycolic organic solvent and/or a water-soluble resin. The invention also provides a lithographic method for the formation of a patterned photoresist layer including a step of rinse treatment of an alkali-developed resist layer with the rinse solution defined above. The invention provides an improvement on the lithographic process in respect of the product quality and efficiency of the process.
摘要:
A composition for forming an anti-reflection film for use in forming an anti-reflection film on a resist film is provided, the composition for forming an anti-reflection film being easily handled, and capable of forming an anti-reflection film having superior optical characteristics similarly to anti-reflection films formed using PFOS. A composition for forming an anti-reflection film to be provided on a resist film which includes a certain fluorine compound. This composition for forming an anti-reflection film can form an anti-reflection film having superior optical characteristics since the certain fluorine compound contributes to improvement of the optical characteristics of the anti-reflection film.
摘要:
A cleaning liquid for lithography that exhibits equally excellent cleaning performance for resists of a wide variety of compositions, such as various resists for i-line, KrF and ArF, silicic resist and chemical amplification type positive resist, and that excels in post-treatment dryability, being free from any deterioration of resist performance by cleaning. There is provided a cleaning liquid for lithography, comprising at least one member (A) selected from among lower alkyl esters of acetic acid and propionic acid and at least one member (B) selected from among ketones having 5 to 7 carbon atoms per molecule in a mass ratio of (A):(B) of 4:6 to 7:3.
摘要:
Disclosed is a surface treatment liquid which enables simple and efficient hydrophobilization of a substrate and prevention of collapse of a resin pattern or etched pattern. Also disclosed are a surface treatment method using the surface treatment liquid, a hydrophobilization method using the surface treatment liquid, and a hydrophobilized substrate. When a substrate is hydrophobilized, the substrate is coated with a surface treatment liquid containing a silylating agent and a hydrocarbon non-polar solvent. When a pattern is prevented from collapse, the surface of a resin pattern formed on a substrate or etched pattern formed on a substrate by etching is treated using a surface treatment liquid containing a silylating agent and a solvent.
摘要:
Conventional detergents for lithography which contain a surfactant as an active ingredient should have a reduced surfactant concentration because heightened surfactant concentrations result in dissolution of the resin component of a photoresist composition and hence in a dimensional change of a resist pattern. However, the conventional detergents have had a drawback that such a low concentration unavoidably reduces the ability to inhibit pattern falling and defect occurrence. A detergent for lithography is provided which is an aqueous solution containing (A) at least one member selected among nitrogenous cationic surfactants and nitrogenous ampholytic surfactants and (B) an anionic surfactant. This detergent retains a low surface tension even when it has a low concentration. It is effective in inhibiting pattern falling and defect occurrence. It can also inhibit resist patterns from fluctuating in dimension.