Abstract:
PROBLEM TO BE SOLVED: To provide a laminate which can suitably be used as an interlayer insulating film in a semiconductor element and is superior in adhesiveness as a film formed by CVD method. SOLUTION: The laminated body includes (A) a polybenzoxazole film, formed by condensing polybenzoxazole precursor, and (B) a film obtained by heating hydrolysis condensate obtained by hydrolyzing and condensing at least one type of compound selected from among a group consisting of compounds, expressed by general Formulas (1) to (4). In Formula (1) for HSi(OR 1 ) 3 , R 1 shows a monovalent organic group. In Formula (2) R a Si(OR 2 ) 4-a , R shows fluorine atom or the monovalent organic group, R 2 the monovalent organic group and (a) integer of 1 to 2. In Formula (3) for Si(OR 3 ) 4 , R 3 shows the monovalent organic group. In Formula (4) for R 4 b (R 5 O) 3-b Si-(R 8 ) d -Si(OR 6 ) 3-c R 7 c , R 4 to R 7 are identical or different and show the monovalent organic group, (b) and (c) are identical or different and show the integers of 0 to 2, R 8 shows oxygen atom, a phenylene group or a group shown by -(CH 2 ) n -((n) is integer of 1 to 6), and (d) shows 0 or 1. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming an insulating film low in dielectric constant and excellent in resistance to such processes as etching, ashing, or wet cleaning; and to provide an insulating film formed by this method. SOLUTION: The insulating film forming method includes a step of forming a polysiloxane-based insulating film on a substrate, a step of forming a polycarbosilane-based insulating film on the polysiloxane-based insulating film, and a step of forming a plasma CVD-deposited insulating film on the polycarbosilane-based insulating film. The polysiloxane-based insulating film is formed by hydrolytic condensation of at least one compound selected from the group consisting of monoalkylalkoxysilane, dialkylalkoxysilane, and tetraalkoxysilane. The polycarbosilane-based insulating film is formed by heating a coating film formed by application of a solution obtained by dissolving a polycarbosilane compound into a solvent. The insulating film thus obtained is described. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a composition for forming a thermally decomposable lower layer film for a multi-layered resist process used to form the thermally decomposable lower layer film which eliminates the need for an ashing treatment, can be decomposed and removed through a simple heat treatment, and never damages an inorganic film such as a Low-K film. SOLUTION: In the composition for forming the thermally decomposable lower layer film for the multi-layered resist process, a weight decrease rate is ≤5 wt.% when the film is heated for one hour at 300°C in an inert gas atmosphere or vacuum atmosphere and the weight decrease rate is ≥80 wt.% when the film is heated for one hour at 420°C in an inert gas atmosphere, a vacuum atmosphere, a reducing gas atmosphere, or mixed atmosphere of inert gas and reducing gas. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain an etching stopper and a hard mask both of which are favorably used at the time of dry etching an interlayer insulating film composed of SiO 2 , a fluorine-doped SiO 2 , an organic/inorganic SOG (spin-on glass) material, a low-k film, etc., or at the time of dry etching a barrier film such as of SiN, SiC, SiCN, etc. SOLUTION: An insulating film is composed of a film selected from among SiO 2 (silicon oxide) insulating film, an FSG (fluorine-doped silicon oxide) insulating film, an OSG (organosilicate glass) insulating film, a SiOC (carbon-doped silicon oxide) insulating film, an MSQ (methyl silsesquioxane) insulating film, an HSQ (hydrogen silsesquioxane) insulating film, the SOG (spin-on glass) insulating film, a polyorganosiloxane insulating film, the low-k (low dielectric) interlayer insulating film, and an organic polymer low-dielectric interlayer insulating film and an organic silicon polymer having a dry etching selection ratio. The insulating film has relative permittivity of ≤4. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a film having proper contact with a substrate which contains Si and further contains one kind of element selected from among groups of O, C, N, and H. SOLUTION: A laminated film is characterized in that (A) a film formed by heating either a hydrolytic condensate obtained by hydrolyzation or condensing a silane compound essentially composed of trialkoxy silane and (B) a film formed by heating a hydrolytic condensate obtained by hydrolyzing and condensing a silane compound selected between organoalkoxy silane and tetra-alkoxy silane are laminated.
Abstract:
PROBLEM TO BE SOLVED: To provide a polyorganosiloxane composition for forming film which yields a film that has a low dielectric constant and a high elastic modulus and thus is useful as an interlayer insulating film in a semiconductor device or the like. SOLUTION: The composition for forming film comprises (A) a condensate obtained by hydrolyzing at least one compound selected from the group consisting of the compounds represented by the following general formulae (1), (2), and (3) in the presence of an alkali metal catalyst, followed by condensing; and (B) a condensate obtained by hydrolyzing at least one compound selected from the group consisting of the compounds represented by the following general formulae (1), (2), and (3) in the presence of a metal chelating compound catalyst, followed by condensing. Ra(Si)(OR1)4-a (1) Si(OR2)4 (2) R3b(R4)3-b Si-(R7)d-Si(OR5)3-c R6c (3) (wherein R is a hydrogen atom, a fluorine atom, or a univalent organic group; R1-R6 is a univalent organic group; R7 is an oxygen atom, a phenylene group, or-(CH2)n-; a is an integer of 1-2; b and c are each a number of 0-2; d is 0 or 1; and n is an integer of 1-6).
Abstract:
PROBLEM TO BE SOLVED: To obtain a polyorganosiloxane-based composition capable of providing a film useful as an interlayer insulating film in a semiconductor element, etc., and having low dielectric constant and high modulus of elasticity. SOLUTION: (A) At least one kind of a compound selected from the group of (A-1): RaSi(OR1)4-a [R denotes H, F or a monovalent organic group; R1 denotes a monovalent organic group; and (a) denotes an integer of 1-2], (A-2): Si(OR2)4 (R2 denotes a monovalent organic group) and (A-3): R3b(R4O)3-bSi-(R7)d-Si(OR5)3-cR6c [R3 to R6 are same or different and denote each a monovalent organic group; b and c are same or different and denote each an integer of 0-2; R7 denotes O, phenylene group or a group represented by the following:-(CH2)n- (n is an integer of 1-6); and d denotes 0 or 1] is subjected to hydrolysis and condensation in the presence of (B) an alkaline catalyst and the obtained hydrolytic condensate is made to have 50,000-10,000,000 weight- average molecular weight.
Abstract:
PROBLEM TO BE SOLVED: To obtain a film-forming composition which can give a coating film having an excellent balance among uniformity, dielectric properties, cracking resistance, hygroscopicity, or the like, by hydrolytically condensing a first organosilane in the presence of a previously prepared hydrolytic condensate of the first organosilane with a second organosilane having another structure. SOLUTION: A solution is prepared by dissolving 100 pts.wt. mixture of 50-95 mol% (A) organosilane represented by formula I (e.g. methyltrimethoxysilane) with 5-50 mol% (B) organosilane represented by formula II (e.g. tetramethoxysilane) in 20-4,000 pts.wt. organic solvent (e.g. n-pentane). After the addition of 0.01-0.2 mol, per mol of components A and B, water and 0.001-20 pts.wt., per 100 pts.wt. components A and B, catalyst (e.g. organic acid), the solution is subjected to a hydrolytic condensation reaction. After the addition of 0.005-0.5 mol of component A, water, and a catalyst, the reaction mixture is further subjected to a hydrolytic condensation reaction to obtain a composition having a weight-average molecular weight of 1,000-120,000. In the formulae, R1 is a monovalent organic group; and R2 is an alkyl, or the like.