US4540620A — Conductive patterns in polymeric films

Claim 1

Independent Claim 45 words

A method for producing conductive paths on a poly(arylene sulfide) object comprising: altering the polymer morphology of selected areas of the object so as to produce in such areas relatively lesser polymer crystallinity; and selectively inducing electrical conductivity in said areas of lesser polymer crystallinity.

Claim 2

Independent Claim 45 words

A method for producing conductive paths on a poly(arylene sulfide) object comprising: altering the polymer morphology of selected areas of the object so as to produce in such areas relatively lesser polymer crystallinity; and selectively inducing electrical conductivity in said areas of lesser polymer crystallinity.

Claim 3

Dependent Claim 22 words

The method of claim 1 in which electrical conductivity is selectively induced by chemical doping of the areas of lesser polymer crystallinity.

Claim 4

Dependent Claim 28 words

The method of claim 1 in which the polymer morphology is altered by heating the selected areas to a temperature above the melting temperature of the poly(arylene sulfide).

Claim 5

Dependent Claim 24 words

The method of claim 1 in which the polymer morphology is altered by a solvent effective for reducing the crystallinity of the poly(arylene sulfide).

Claim 6

Dependent Claim 23 words

The method of claim 1 in which the polymer morphology is altered by contact of the selected areas with a high-intensity light beam.

Claim 7

Dependent Claim 28 words

The method of claim 1 in which the selected areas exhibit a crystallinity of less than about 15, as determined by x-ray, after alteration of the polymer morphology.

Claim 8

Dependent Claim 32 words

The method of claim 6 in which electrical conductivity is selectively induced by chemical doping using a doping agent in a liquid solvent effective for increasing the crystallinity of the poly(arylene sulfide).

Claim 9

Dependent Claim 24 words

The method of claim 6 in which electrical conductivity is selectively induced by doping the areas of relatively lesser polymer crystallinity with nitrosonium hexafluorophosphate.

Claim 10

Dependent Claim 24 words

The method of claim 8 in which the nitrosonium hexafluorophosphate is present in a liquid effective for increasing the crystallinity of the poly(arylene sulfide).

Claim 11

Dependent Claim 25 words

The method of claim 9 in which the polymer morphology is altered by contact of the poly(arylene sulfide) with a pulsed carbon dioxide laser beam.

Claim 12

Independent Claim 104 words

A method comprising: contacting selected areas of a poly(phenylene sulfide) film with a pulsed laser beam having an intensity of at least about 0.1 joules/cm so as to heat the selected areas to a temperature above the melting point of the poly(phenylene sulfide); cooling the selected areas so as to produce in the selected areas a crystallinity different from that of the non-heated areas of the poly(phenylene sulfide) film; chemically doping those areas of the thus-treated poly(phenylene sulfide) film having a relatively lower level of crystallinity with a doping agent effective to increase the electrical conductivity of the doped areas of the poly(arylene sulfide).

Claim 13

Independent Claim 104 words

A method comprising: contacting selected areas of a poly(phenylene sulfide) film with a pulsed laser beam having an intensity of at least about 0.1 joules/cm so as to heat the selected areas to a temperature above the melting point of the poly(phenylene sulfide); cooling the selected areas so as to produce in the selected areas a crystallinity different from that of the non-heated areas of the poly(phenylene sulfide) film; chemically doping those areas of the thus-treated poly(phenylene sulfide) film having a relatively lower level of crystallinity with a doping agent effective to increase the electrical conductivity of the doped areas of the poly(arylene sulfide).

Claim 14

Dependent Claim 30 words

The method of claim 11 in which the areas contacted with the pulsed laser beam are quenched so as to produce areas of relatively low crystallinity in the poly(phenylene sulfide).

Claim 15

Dependent Claim 30 words

The method of claim 11 in which the areas contacted with the pulsed laser beam are cooled so as to produce areas of relatively high crystallinity in the poly(phenylene sulfide).

Claim 16

Independent Claim 81 words

A method comprising: contacting selected areas of a poly(arylene sulfide) film with a pulsed laser beam so as to heat the contacted areas to a temperature above that of the melting temperature of the poly(arylene sulfide); simultaneously, contacting the opposite side of the film with a substrate having a temperature effective for reducing the temperature of the film at a rate which will freeze thus-heated areas in an amorphous polymeric state; and inducing electrical conductivity selectively in the thus-produced amorphous areas.

Claim 17

Independent Claim 81 words

A method comprising: contacting selected areas of a poly(arylene sulfide) film with a pulsed laser beam so as to heat the contacted areas to a temperature above that of the melting temperature of the poly(arylene sulfide); simultaneously, contacting the opposite side of the film with a substrate having a temperature effective for reducing the temperature of the film at a rate which will freeze thus-heated areas in an amorphous polymeric state; and inducing electrical conductivity selectively in the thus-produced amorphous areas.

Claim 18

Dependent Claim 24 words

The method of claim 14 in which electrical conductivity is selectively induced by contacting the amorphous areas with a solution of a doping agent.

Claim 19

Dependent Claim 13 words

The method of claim 15 in which the doping agent is nitrosonium hexafluorophosphate.

Claim 20

Dependent Claim 38 words

An article of manufacture comprising a poly(arylene sulfide) film, the film comprising (a) regions of amorphous poly(arylene sulfide), (b) regions of crystalline poly(arylene sulfide), and (c) a chemical doping agent present in the regions of amorphous poly(arylene sulfide).

Claim 21

Dependent Claim 38 words

An article of manufacture comprising a poly(arylene sulfide) film, the film comprising (a) regions of amorphous poly(arylene sulfide), (b) regions of crystalline poly(arylene sulfide), and (c) a chemical doping agent present in the regions of amorphous poly(arylene sulfide).

Claim 22

Dependent Claim 15 words

The article of manufacture of claim 17 in which the poly(arylene sulfide) is poly(phenylene sulfide).

Claim 23

Dependent Claim 16 words

The article of manufacture of claim 18 in which the chemical doping agent is nitrosonium hexafluorophosphate.

Claim 24

Dependent Claim 23 words

The article of manufacture of claim 17 in which the chemical doping agent is confined essentially to the regions of amorphous poly(arylene sulfide).

Claim 25

Dependent Claim 12 words

A printed circuit board comprising the article of manufacture of claim 17.

Claim 26

Dependent Claim 11 words

An integrated circuit comprising the article of manufacture of claim 17.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-09-09	1989-03-11	1989-09-10	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-09-09	1993-03-11	1993-09-10	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-09-09	1997-03-11	1997-09-10	$7700.00	Window Closed / Lapsed

Conductive patterns in polymeric films

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