摘要:
Epoxy resin compositions are disclosed which have an exceptional capacity to penetrate tightly wound wire bundles such as tertiary coils in high voltage flyback transformers. The subject compositions are therefore useful for encapsulating such coils.
摘要:
The invention provides a method for producing a positive working photosensitive element with increased photospeed which comprises coating a formulation containing at least one novolak or polyvinyl phenol resin, at least one o-quinone diazide and a propylene glycol alkyl ether acetate on a substrate, drying, exposing to imaging energy and developing.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, 2-cyclopentene-1-acetic acid and sulfur dioxide. Positive electron beam resist media prepared from the subject terpolymers possesses excellent sensitivity and development latitude and unexpectedly are developable with conventional aqueous alkaline developers.
摘要:
A method of selectively removing a portion of a layer of material on a substrate by oxygen plasma etching utilizing a mask of a resist material comprising a poly(silane sulfone) copolymer.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, 2-cyclopentene-1-acetic acid and sulfur dioxide. Positive electron beam resist media prepared from the subject terpolymers possesses excellent sensitivity and development latitude and unexpectedly are developable with conventional aqueous alkaline developers.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, an omega alkynoic acid and sulfur dioxide. Positive radiation sensitive films prepared from the subject terpolymers adhere well to the substrate, demonstrate resistance to cracking and erosion during development and possess excellent edge definition.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, an omega alkynoic acid and sulfur dioxide. Positive radiation sensitive films prepared from the subject terpolymers adhere well to the substrate, demonstrate resistance to cracking and erosion during development and possess excellent edge definition.
摘要:
For fine line lithography of a reflective substrate, a layer of titanium nitride is applied between the reflective surface and the photoresist that is absorbant at the wavelength of light used to expose the photoresist. The resolution of the photoresist is improved, even when an absorbant dye is used in the photoresist. The titanium nitride can be readily removed at the same time as the reflective layer is patterned, thereby avoiding the need of a separate step to remove the absober layer during etching of the reflective substrate.
摘要:
The use of o-cresol novolac resin for planarizing large topographic features on a semiconductor substrate is disclosed. In addition to being a superior planarizing material, o-cresol novolac resin oxidizes and darkens upon baking to provide excellent absorption capability for the light wavelengths which are conventionally utilized to irradiate photoresist compositions. O-cresol novolac resin additionally transmits light at higher wavelengths which are used to align pattern masks with alignment keys on a substrate. These properties further make a transparent substrate coated with a patterned layer of o-cresol novolac resin useful as a lithographic mask.
摘要:
Copolymers of an aziridine and sulfur dioxide are disclosed which are useful as positive radiation resists for use in electron beam and x-ray lithography.