摘要:
A phenol novolak resin has a peak intensity ratio of ortho-ortho bond (o-o)/ortho-para bond (o-p)/para-para bond (p-p) in a resin structure not substantially varying in each molecular weight fraction and has a weight average molecular weight (Mw) of 3000 to 20000 in terms of polystyrene, which peak intensity ratio is detected by 13C-NMR analysis. The phenol novolak resin can form both dense pattern and isolation pattern with good shapes in the formation of a fine resist pattern of not more than 0.35 μm and has satisfactory sensitivity, definition, and focal depth range properties, and has a resin composition being uniform in each molecular weight fraction. A process for producing the phenol novolak resin, and a positive photoresist composition using the resin are also provided.
摘要:
A novolak resin precursor is composed of bonded phenolic moieties, one of the hydrogen atoms in the o- or p-positions relative to the hydroxy group of each phenolic moiety is substituted with an alkyl or alkenyl group having 1 to 3 carbon atoms, and the other two hydrogen atoms are bonded through methylene bonds. The content of ortho-ortho bonding is 30 to 70% relative to the number of total methylene bonds and the weight average molecular weight of the precursor is 300 to 10,000. A novolak resin is obtained from this precursor, and a positive photoresist composition comprises this novolak resin. The invention provides a positive photoresist composition that comprises less binuclear compounds, suppresses scum formation, is excellent in terms of definition and coating performance and provides a resist pattern having satisfactory heat resistance.
摘要:
A positive photoresist composition includes (A) an alkali-soluble resin, and (B) a photosensitizer including an ester of a 1,2-naphthoquinonediazidesulfonyl compound with a compound of the following formula (I). This positive photoresist composition has satisfactory sensitivity, definition, and depth of focus properties, can form both dense patterns and isolation patterns with good shapes in the formation of mixed resist patterns, and can minimize inverted taper shape formation of isolation resist patterns induced by shifts of focal depth to the minus side.
摘要:
A positive photoresist composition for forming a contact hole which comprises (A) an alkali-soluble resin; (B) a naphthoquinonediazide group-containing compound; and (C) a solvent, wherein the ingredient (B) comprises: at least one naphthoquinonediazidesulfonic ester of a polyphenol compound, where said polyphenol compound is composed of from 4 to 6 benzene rings each bonding via a methylene chain, each of the methylene chains is in a meta position to other methylene chains, and each of the benzene rings has a hydroxyl group is provided. According to tie present invention, a positive photoresist composition and a process for forming a contact hole can be provided each of which gives a contact hole pattern image in exact accordance with a mask pattern without dimple formation, in the contact hole forming technologies using the phaseshift method.
摘要:
A novolak resin precursor is composed of bonded phenolic moieties, one of the hydrogen atoms in the o- or p-positions relative to the hydroxy group of each phenolic moiety is substituted with an alkyl or alkenyl group having 1 to 3 carbon atoms, and the other two hydrogen atoms are bonded through methylene bonds. The content of ortho—ortho bonding is 30 to 70% relative to the number of total methylene bonds and the weight average molecular weight of the precursor is 300 to 10,000. A novolak resin is obtained from this precursor, and a positive photoresist composition comprises this novolak resin. The invention provides a positive photoresist composition that comprises less binuclear compounds, suppresses scum formation, is excellent in terms of definition and coating performance and provides a resist pattern having satisfactory heat resistance.
摘要:
A positive photoresist composition comprises (A) an alkali-soluble resin, and (B) at least one quinonediazide group-containing compound in which part or all of the hydroxyl groups of a compound represented by the following formula (I) are esterified with a quinonediazidesulfonic acid: ##STR1## wherein each of R.sup.1 and R.sup.2 is an alkyl group having 1 to 5 carbon atoms, and "a" is 0 or 1. The present invention provides a positive photoresist composition which can form a resist pattern having high film residual rate, improved development contrast between exposed portions and unexposed portions, and satisfactory definition, exposure margin, focal depth range properties and sectional shape.
摘要:
A positive photoresist coating solution comprising (a) an alkali-soluble resin, (b) a quinone diazide group-containing compound, and (c) an organic solvent in an amount sufficient for dissolving said (a) and (b) components, wherein said organic solvent contains (i) propylene glycol monopropyl ether and (ii) 2-heptanone. The solution of the present invention exhibits excellent coating ability, sensitivity, thermostability, focal depth range, shape-profiling ability, and the like.
摘要:
Proposed is a novel positive-working photoresist composition suitable for use in the fine patterning works in the manufacture of electronic devices and capable of exhibiting excellent performance with high resolution, high sensitivity, wide range of focusing depth, large exposure dose latitude and other characteristics. The photoresist composition is formulated, in addition to the basic ingredients of an alkali-soluble novolac resin as a film-forming agent and photosensitive ingredient such as an ester of naphthoquinone-1,2-diazide sulfonic acid and a polyhydroxy compound, with a limited amount of 4,4'-bis(dialkylamino) benzophenone, e.g., 4,4'-bis(diethylamino) benzophenone, preferably, in combination with a polyhydroxy compound such as 4,6-bis[1-methyl-1-(4-hydroxyphenyl)ethyl]-1,3-dihydroxy phenol.
摘要:
The positive-working photosensitive composition useful as a material of photoresist comprises, in addition to a film-forming resin, such as a cresol novolak resin, and a photosensitive compound, such as an ester of a polyhydroxy benzophenone and 1,2-naphthoquinonediazido-5-sulfonic acid, an esterification product of curcumin with 1,2-naphthoquinone diazide sulfonic acid in a limited amount. The photosensitive composition is outstandingly insusceptible to the adverse influence of halation even when the photoresist layer is formed on a highly reflective aluminum-deposited surface of a substrate without decreasing the photosensitivity of the composition to actinic rays in the photolithographic process for the manufacture of semiconductor devices.
摘要:
A dyeing resistant insulation film for forming a color filter which exhibits no scattering between the dyed layer and the light detection portion and having high bondability with the dyed layer can be provided by utilizing a copolymer of glycidyl methacrylate and methyl methacrylate. A color filter of extremely high quality can be prepared by using this dyeing resistant insulation film for forming the color filter.