摘要:
This invention relates to novel hydroxy polyimides and radiation sensitive compositions prepared therefrom. More particularly the invention relates to positive photoresists useful in the preparation of a thermally stable relief pattern on a substrate e.g. a silicon wafer or aluminum plate. The novel hydroxy polyimides of the invention may also be used to provide thermally stable organic protective films and layers e.g. an insulating and/or a passivating layer in a semi-conductor component.The novel hydroxy polyimides of in this invention can be synthesized by the condensation of a hydroxy-substituted aminophenol and a dianhydride. Radiation sensitive compositions prepared from the novel hydroxy polyimides of the invention can be developed in aqueous base developer or organic solvent developer; preferably aqueous base developer. Also, the base developer dissolution properties of the polyimides can be controlled by incorporating a non-hydroxyl diamine into the polyimide.The polyimides utilized in this invention have good solubility properties in various organic solvents and also have good mechanical, electrical, adhesion and thermal properties. Radiation sensitive compositions made from hydroxy polyimides of this invention provide high-resolution relief images which are thermally stable up to a temperature of approximately 300.degree. C.
摘要:
Heat resistant, shapable, hydroxy and/or alkoxy-substituted polyamides derived from at least one diamine selected from unsubstituted and substituted 4,4'-bis[2-(4-amino-3-hydroxyphenyl)hexafluoroisopropyl)]diphenyl ether 4,4'-bis-[2-(3-amino-4-hydroxyphenyl)hexafluoroisopropyl]diphenyl ether and a dicarboxylic acid or a derivative thereof e.g. its acid halo or ester. The polyamides of the invention may be thermally cured to form polybenzoxazoles of higher heat resistance which are stable to hydrolytic, chemical and radiation attack.The polyamides of the invention may be formed into shaped articles by molding, extrusion and solvent casting processes preferably in the presence of a solvent or diluent and then optionally converted into heat resistant, insoluble polybenzoxazoles. These shaped articles are useful in aircraft, electronic and other commercial applications where heat, chemical and radiation resistance are desired in conjunction with good mechanical and electrical properties.
摘要:
This invention is that of high temperature polyamides containing the hexafluoroisopropylidene group. The high temperature polyamides of the invention and photo or radiation sensitizers provide improved high temperature positive resists which can be developed in aqueous alkaline developer and thermally anneal to form heat resistant, polyoxazole relief structures suitable for use in microelectronic and printing applications. The positive photoresists of the invention have improved solubility in coating solvents and improved photospeed. The polyamides of the invention can be prepared by conventional condensation reactions; e.g. the condensation of a diamine and diacid chloride. In addition the polyamides of this invention provide high temperature protective coatings with superior adhesion properties in applications other than the photoresist area.
摘要:
This invention is that of high temperature polyamides containing the hexafluoroisopropylidene group. The high temperature polyamides of the invention and photo or radiation sensitizers provide improved high temperature positive resists which can be developed in aqueous alkaline developer and thermally anneal to form heat resistant, polyoxazole relief structures suitable for use in microelectronic and printing applications. The positive photoresists of the invention have improved solubility in coating solvents and improved photospeed. The polyamides of the invention can be prepared by conventional condensation reactions; e.g. the condensation of a diamine and diacid chloride. In addition the polyamides of this invention provide high temperature protective coatings with superior adhesion properties in applications other than the photoresist area.
摘要:
Polyesters of 4,4'bis[2-(4-hydroxyphenyl)hexafluoroisopropyl]diphenyl ether having high transparency, high solvent solubility and excellent melt processability are prepared. They possess high thermal and radiation stability and are useful in the preparation of protective films, protective paints, films, fibers, diffusion membranes and shaped articles where high service temperature and radiation resistance are desired.
摘要:
Heat resistant, shapable, hydroxy and/or alkoxy-substituted polyamides derived from at least one diamine selected from unsubstituted and substituted 4,4'-bis[2-(4-amino-3-hydroxyphenyl)hexafluoroisopropyl)]diphenyl ether 4,4'-bis-[2-(3-amino-4-hydroxyphenyl)hexafluoroisopropyl]diphenyl ether and a dicarboxylic acid or a derivative thereof e.g. its acid halo or ester. The polyamides of the invention may be thermally cured to form polybenzoxazoles of higher heat resistance which are stable to hydrolytic, chemical and radiation attack.The polyamides of the invention may be formed into shaped articles by molding, extrusion and solvent casting processes preferably in the presence of a solvent or diluent and then optionally converted into heat resistant, insoluble polybenzoxazoles. These shaped articles are useful in aircraft, electronic and other commercial applications where heat, chemical and radiation resistance are desired in conjunction with good mechanical and electrical properties.
摘要:
This invention is that of high temperature polyamides containing the hexafluoroisopropylidene group. The high temperature polyamides of the invention and photo or radiation sensitizers provide improved high temperature positive resists which can be developed in aqueous alkaline developer and thermally anneal to form heat resistant, polyoxazole relief structures suitable for use in microelectronic and printing applications. The positive photoresists of the invention have improved solubility in coating solvents and improved photospeed. The polyamides of the invention can be prepared by conventional condensation reactions; e.g. the condensation of a diamine and diacid chloride. In addition the polyamides of this invention provide high temperature protective coatings with superior adhesion properties in applications other than the photoresist area.
摘要:
The invention relates to the field of microelectronics, such as integrated circuits, and more particularly to compositions and methods of removing photoresists or other organic materials from the surfaces of substrates used in the fabrication of integrated circuits. In particular the present invention relates to amine-free stripping compositions comprising solvent and surfactant that can effectively remove organic materials without corroding the underlying substrate, and the invention also relates to methods for removing these organic materials with the novel stripping composition.
摘要:
The present invention relates to an antireflective coating composition comprising an admixture of:a) a polymer defined by the following structure: ##STR1## where, R.sub.1 & R.sub.2 are independently hydrogen, or C.sub.1 to C.sub.5 alkylR.sub.3 is a methyl, ethyl, propyl or butyl groupR.sub.4 -R.sub.7 are independently hydrogen, or C.sub.1 to C.sub.5 alkyln=10 to 50,000(b) a fluorine-containing, sparingly water-soluble (0.1%-10% by weight in water) organic C.sub.3 -C.sub.13 aliphatic carboxylic acid;(c) a non-metallic hydroxide; and(d) a solvent.The invention also relates to a method for producing such an antireflective coating composition and to a method for producing a microelectronic device using such an antireflective coating composition in conjunction with a photoresist composition.
摘要:
The present invention relates to a novel polymer suitable for use as an antireflective coating or as an additive in photoresist for absorption of reflected light. The novel polymer comprises at least one unit containing a dye that absorbs from about 180 nm to about 450 nm and at least one unit that contains no aromatic funtionality. The polymer is soluble in organic solvents, preferrably solvents of low toxicity, or it may be soluble in water, which may additionally contain other water miscible organic solvents.