US5079069A — Capacitor laminate for use in capacitive printed …

Claim 1

Independent Claim 172 words

A capacitive printed circuit board (PCB), comprising multiple layers laminated about a capacitor laminate, and a large number of devices mounted or formed on the PCB, the capacitor laminate being operatively coupled with the respective devices to provide capacitance for the devices, the capacitor laminate including: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, the sheet of dielectric material having a thickness and dielectric constant whereby each individual device is provided with a capacitance by a portion of the capacitor laminate proportional to the individual device and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 2

Dependent Claim 172 words

A capacitive printed circuit board (PCB), comprising multiple layers laminated about a capacitor laminate, and a large number of devices mounted or formed on the PCB, the capacitor laminate being operatively coupled with the respective devices to provide capacitance for the devices, the capacitor laminate including: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, the sheet of dielectric material having a thickness and dielectric constant whereby each individual device is provided with a capacitance by a portion of the capacitor laminate proportional to the individual device and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 3

Dependent Claim 27 words

The capacitive PCB of claim 1 wherein the capacitor laminate has less capacitance than the combined theoretical capacitance required for all of the devices on the PCB.

Claim 4

Dependent Claim 29 words

The capacitive PCB of claim 2 wherein the capacitor laminate has less than about 10% of the combined theoretical capacitance required for all of the devices on the PCB.

Claim 5

Dependent Claim 23 words

The capacitive PCB of claim 1 wherein the two sheets of conductive material form power and ground planes respectively within the capacitive PCB.

Claim 6

Dependent Claim 19 words

The capacitive PCB of claim 4 wherein multiple capacitor laminates are arranged in spaced apart relation within the PCB.

Claim 7

Dependent Claim 18 words

The capacitive PCB of claim 4 wherein the multiple capacitor laminates are coupled in parallel with the devices.

Claim 8

Dependent Claim 72 words

The capacitive PCB of claim 1 wherein the sheet of dielectric material has a thickness of at least about 0.5 mils and the sheets of conductive material each have a mass distribution of at least about 0.5 ounces per square foot to assure structural rigidity of the capacitor laminate and to provide sufficient borrowed capacitance for random operation of the large number of devices coupled with the capacitor laminate on the PCB.

Claim 9

Dependent Claim 48 words

The capacitive PCB of claim 7 wherein the devices are of a type requiring noise suppression over a range of operating speeds of frequencies, the borrowed capacitance effect of the capacitor laminate resembling multiple capacitors coupled with each device and thereby enhancing capacitive range within the capacitive PCB.

Claim 10

Dependent Claim 17 words

The capacitive PCB of claim 7 wherein the dielectric material has a thickness of about 1-2 mils.

Claim 11

Dependent Claim 26 words

The capacitive PCB of claim 7 wherein the sheets of conductive material each have a mass distribution of at least about 1 ounce per square foot.

Claim 12

Dependent Claim 43 words

The capacitive PCB of claim 1 wherein the devices require suppression over a range of operating speeds of frequencies, the borrowed capacitance effect of the capacitor laminate resembling multiple capacitors coupled with each device and thereby enhancing capacitive range within the capacitive PCB.

Claim 13

Dependent Claim 173 words

A capacitive printed circuit board (PCB) comprising multiple layers laminated about a capacitor laminate, and means formed on the PCB for receiving a large number of devices in operative connection with the capacitor laminate, the capacitor laminate including: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, means for coupling the conductive sheets with the devices, the sheet of dielectric material having a thickness and dielectric constant whereby each individual device is provided with capacitance by a portion of the capacitor laminate to which the individual device is proportional and borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 14

Dependent Claim 173 words

A capacitive printed circuit board (PCB) comprising multiple layers laminated about a capacitor laminate, and means formed on the PCB for receiving a large number of devices in operative connection with the capacitor laminate, the capacitor laminate including: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, means for coupling the conductive sheets with the devices, the sheet of dielectric material having a thickness and dielectric constant whereby each individual device is provided with capacitance by a portion of the capacitor laminate to which the individual device is proportional and borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 15

Dependent Claim 27 words

The capacitive PCB of claim 12 wherein the capacitor laminate has less capacitance than the combined theoretical capacitance required for all of the devices on the PCB.

Claim 16

Dependent Claim 72 words

The capacitive PCB of claim 12 wherein the sheet of dielectric material has a thickness of at least about 0.5 mils and the sheets of conductive material each have a mass distribution of at least about 0.5 ounces per square foot to assure structural rigidity of the capacitor laminate and to provide sufficient borrowed capacitance for random operation of the large number of devices coupled with the capacitor laminate on the PCB.

Claim 17

Dependent Claim 44 words

The capacitive PCB of claim 12 wherein the devices require noise suppression over a range of operating speeds of frequencies, the borrowed capacitance effect of the capacitor laminate resembling multiple capacitors coupled with each device and thereby enhancing capacitive range within the capacitive PCB.

Claim 18

Dependent Claim 17 words

The capacitive PCB of claim 15 wherein the dielectric material has a thickness of about 1-2 mils.

Claim 19

Dependent Claim 26 words

The capacitive PCB of claim 15 wherein the sheets of conductive material each have a mass distribution of at least about 1 ounce per square foot.

Claim 20

Dependent Claim 44 words

The capacitive PCB of claim 12 wherein the devices require noise suppression over a range of operating speeds of frequencies, the borrowed capacitance effect of the capacitor laminate resembling multiple capacitors coupled with each device and thereby enhancing capacitive range within the capacitive PCB.

Claim 21

Dependent Claim 146 words

A capacitor laminate for use as a layer in a printed circuit board (PCB) to provide capacitance for large numbers of devices or formed on the PCB, comprising: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, the sheet of a dielectric material having a thickness and dielectric constant whereby each individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate to which other devices are proportional, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 22

Dependent Claim 146 words

A capacitor laminate for use as a layer in a printed circuit board (PCB) to provide capacitance for large numbers of devices or formed on the PCB, comprising: two sheets of conductive material and one intermediate sheet of dielectric material, the separate sheets of conductive and intermediate dielectric material being laminated together to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the capacitive PCB, the sheet of a dielectric material having a thickness and dielectric constant whereby each individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate to which other devices are proportional, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices and the sheets of conductive material having conductivity permitting current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 23

Dependent Claim 28 words

The capacitor laminate of claim 19 wherein the capacitor laminate has substantially less capacitance than the combined theoretical capacitance required for all of the devices on the PCB.

Claim 24

Dependent Claim 72 words

The capacitor laminate of claim 19 wherein the sheet of dielectric material has a thickness of at least about 0.5 mils and the sheets of conductive material each have a mass distribution of at least about 0.5 ounces per square foot to assure structural rigidity of the capacitor laminate and to provide sufficient borrowed capacitance for random operation of the large number of devices coupled with the capacitor laminate on the PCB.

Claim 25

Dependent Claim 17 words

The capacitor laminate of claim 21 wherein the dielectric material has a thickness of about 1-2 mils.

Claim 26

Dependent Claim 26 words

The capacitor laminate of claim 21 wherein the sheets of conductive material each have a mass distribution of at least about 1 ounce per square foot.

Claim 27

Independent Claim 170 words

A method for forming a capacitive printed circuit board (PCB), comprising the steps of laminating multiple layers about a capacitor laminate, and forming means for receiving a large number of devices on the PCB in operative coupling with the capacitor laminate to provide capacitance for the devices, bonding together two sheets of conductive material and one intermediate sheet of dielectric material to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the PCB, selecting values of thickness and dielectric constant for the sheet of dielectric material whereby each individual device is provided with a capacitance by a portion of the capacitor laminate to which the individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and selecting minimum conductivity for the sheets of conductive material to permit adequate current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 28

Independent Claim 170 words

A method for forming a capacitive printed circuit board (PCB), comprising the steps of laminating multiple layers about a capacitor laminate, and forming means for receiving a large number of devices on the PCB in operative coupling with the capacitor laminate to provide capacitance for the devices, bonding together two sheets of conductive material and one intermediate sheet of dielectric material to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the PCB, selecting values of thickness and dielectric constant for the sheet of dielectric material whereby each individual device is provided with a capacitance by a portion of the capacitor laminate to which the individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and selecting minimum conductivity for the sheets of conductive material to permit adequate current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 29

Dependent Claim 26 words

The method of claim 24 wherein the capacitor laminate has less capacitance than the combined theoretical capacitance required for all of the devices on the PCB.

Claim 30

Independent Claim 159 words

A method for forming a capacitor laminate for use as a layer in a printed circuit board (PCB) to provide capacitance for large numbers of devices mounted or formed on the PCB, comprising the steps of bonding together two sheets of conductive material and one intermediate sheet of dielectric material to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the PCB, selecting values of thickness and dielectric constant for the sheet of dielectric material whereby each individual device is provided with a capacitance by a portion of the capacitor laminate to which the individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and selecting minimum conductivity for the sheets of conductive material to permit adequate current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 31

Independent Claim 159 words

A method for forming a capacitor laminate for use as a layer in a printed circuit board (PCB) to provide capacitance for large numbers of devices mounted or formed on the PCB, comprising the steps of bonding together two sheets of conductive material and one intermediate sheet of dielectric material to form the capacitor laminate as a structurally rigid assembly facilitating its inclusion in the PCB, selecting values of thickness and dielectric constant for the sheet of dielectric material whereby each individual device is provided with a capacitance by a portion of the capacitor laminate to which the individual device is proportional and by borrowed capacitance from other portions of the capacitor laminate, the capacitive function of the capacitor laminate being dependent upon random firing or operation of the devices, and selecting minimum conductivity for the sheets of conductive material to permit adequate current flow necessary to provide each individual device with sufficient borrowed capacitance for its proper operation.

Claim 32

Dependent Claim 26 words

The method of claim 26 wherein the capacitor laminate has less capacitance than the combined theoretical capacitance required for all of the devices on the PCB.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-01-06	1995-07-08	1996-01-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-01-06	1999-07-08	2000-01-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-01-06	2003-07-08	2004-01-07	$7700.00	Window Closed / Lapsed

Capacitor laminate for use in capacitive printed circuit boards and methods of manufacture

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