摘要:
The present invention provides a method of manufacturing a semiconductor device which includes a step of forming a laminated film for pattern formation on a substrate, in which the laminated film for pattern formation includes an innermost layer, an inner layer and a surface layer, an extinction coefficient k of the innermost layer is 0.3 or more, and an extinction coefficient k of the inner layer is 0.12 or more. It also provides a method of forming a pattern which includes a step of forming a laminated film for pattern formation on a substrate, in which the laminated film for pattern formation includes an innermost layer, an inner layer and a surface layer, an extinction coefficient k of the innermost layer is 0.3 or more, and an extinction coefficient k of the inner layer is 0.12 or more.
摘要:
There are provided steps of forming a lower resist layer on a patterning objective layer, forming an organic intermediate layer made of organic material, that contains no Si—O bond in its structure, on the lower resist layer, forming an upper resist layer made of alicyclic resin on the organic intermediate layer, forming a pattern by exposing/developing the upper resist layer, transferring the pattern of the upper resist layer onto the organic intermediate layer by etching the organic intermediate layer while using the upper resist layer as a mask, transferring a pattern of the organic intermediate layer onto the lower resist layer by etching the lower resist layer while using the organic intermediate layer as a mask, and etching the patterning objective layer while using the lower resist layer as a mask. Accordingly, a semiconductor device manufacturing method containing patterning steps employing a multi-layered resist structure, that is capable of suppressing deformation of the pattern of the upper resist layer formed of alicyclic compound, can be provided.
摘要:
A radiation sensitive composition comprising a copolymer having a structural unit of (me)acrylonitrile and a structural unit generating an alkali soluble group and a substance generating an acid by application of radiation.
摘要:
An exposure technique which accomplishes high transparency and the prevention of influence of reflected light in the ultraviolet region of KrF excimer laser light, the technique being capable of decreasing reflected light by employing a base polymer having high transparency in the ultraviolet region and by employing a bleaching agent in combination with a photo acid generator, the bleaching agent being capable of preventing the formation of eaves in an upper portion of a resist pattern.
摘要:
Alkali-developable, chemically amplified resist composition which comprises an alkali-insoluble, film-forming compound having a structural unit containing a protected alkali-soluble group in which unit a protective moiety of said protected alkali-soluble group is cleaved upon action of an acid generated from a photoacid generator used in combination with said compound, thereby releasing a protective moiety from the alkali-soluble group and converting said compound to an alkali-soluble one, and a photoacid generator capable of being decomposed upon exposure to a patterning radiation to thereby produce an acid capable of causing cleavage of said protective moiety. The resist composition is particularly suitable for excimer laser lithography using an alkaline developer, and the formed resist patterns can exhibit a high sensitivity and excellent dry etch resistance without swelling.
摘要:
A method for forming resist patterns comprising coating a resist comprising a polymeric or copolymeric compound having a repeating unit comprising a protected alkali-soluble group in which the protecting group is cleaved with an acid so that the compound is made alkali-soluble, and an acid generator capable of generating an acid upon the radiation exposure to a substrate to be fabricated, then pre-baking the formed resist film, successively selectively exposing the resist film, thereafter, developing a latent image with a developer containing an aqueous or alcoholic solution of a specified ammonium compound or morpholine compound. According to this method, crack formation and peeling of a pattern can be suppressed at the time of forming resist patterns.
摘要:
A high energy radiation-sensitive, pattern-forming resist composition comprising a polymer of the formula (I): ##STR1## in which R.sub.1 represents an alkyl groups, cyano group, --CH.sub.2 OH or --CH.sub.2 CO.sub.2 R wherein R represents an alkyl group, R.sub.2 represents a hydrocarbon group containing at least one silicon atom, R.sub.3 represents a group capable of causing crosslinking of the polymer upon application of heat, and m and n each is an integer. The resist composition is particularly useful as a top layer resist of the bi-level resist system, and the exposed top layer resist can be stably developed because of a remarkably increased difference of the solubility in the developer of the exposed and unexposed areas thereof.
摘要:
A radiation sensitive material comprising a copolymer including itaconic anhydride and methods of using such radiation sensitive materials in methods for forming a pattern.
摘要:
Chemically amplified resist material which comprises: I. an acid-sensitive terpolymer produced upon copolymerization of (i) a first monomer unit having a structure which contains an alkali-soluble group protected with an alicyclic hydrocarbon-containing protective group, (ii) a second monomer unit having a lactone structure, and (iii) a third monomer unit having a structure which contains an alkali-soluble group protected with a protective group different from that of said first monomer unit; and II. a photoacid generator capable of producing an acid upon exposure to a patterning radiation, and the process for forming resist patterns using this resist material.
摘要:
Alkali-developable, chemically amplified resist composition which comprises an alkali-insoluble, film-forming compound having a structural unit containing a protected alkali-soluble group in which unit a protective moiety of said protected alkali-soluble group is cleaved upon action of an acid generated from a photoacid generator used in combination with said compound, thereby releasing a protective moiety from the alkali-soluble group and converting said compound to an alkali-soluble one, and a photoacid generator capable of being decomposed upon exposure to a patterning radiation to thereby produce an acid capable of causing cleavage of said protective moiety. The resist composition is particularly suitable for excimer laser lithography using an alkaline developer, and the formed resist patterns can exhibit a high sensitivity and excellent dry etch resistance without swelling.