Patterned thin film and process for preparing the same

Details Patterned thin film and process for preparing the same Patterned thin film and process for preparing the same

1988-09-23

1990-07-24

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

4284111, 4284735, 528183, 528186, 528188, 528331, 528342, 528348, 528350, 528353, B32B 2700, B32B 2734

Patent

active

049434713

ABSTRACT:
A patterned thin film suitable for use in electric and electronic devices, prepared from a polymer or a mixture of the polymer and other known compounds capable of forming a thin film by LB technique, said polymer having linear recurring units wherein an organic group R.sup.1 having at least 2 carbon atoms and a valence of at least 2 is combined alternately with an organic group R.sup.2 having at least 2 carbon atoms and a valence of at least 2 through a bivalent group formed by a reaction of an acid group A containing a hetero atom and a basic group B containing a hetero atom, and wherein a hydrocarbon-containing group R.sup.3 having 10 to 30 carbon atoms which may contain a substituent group, is linked by covalent or ionic bond to said recurring units, the number of groups R.sup.3 being at least 2 per 10 recurring units. The patterned thin film is prepared by building up a layer or layers of the polymer or a mixture of the polymer and a compound capable of forming a film by LB technique onto a substrate according to the LB technique, irradiating patternwise the built-up film with high enerty rays, and developing the irradiated film, or by forming the built-up film in the same manner as above on a patterned, removal film formed on a substrate, and removing the patterned film from the substrate, and if desired, by further subjecting the obtained pattern to a reaction to convert the polymer, when it has a structure s a precursor, into a polymer having a 5-membered or 6-membered heterocyclic structure.

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