Capacitors in Integrated Circuits and Methods of Fabrication Thereof
First Claim
1. A method of making a device, the method comprising:
- providing a first circuit design including a single capacitor having a first capacitance and a first area;
generating a second circuit design by replacing the single capacitor with a capacitor array, the capacitor array comprising;
a plurality of columns comprising capacitor elements in series, the plurality of columns coupled in parallel to form a plurality of rows, wherein the capacitance of each capacitor element in the plurality of columns has a value equal or smaller than the value of the first capacitance, wherein each capacitor element in the plurality of columns has an area less than the first area; and
fabricating a circuit with the second circuit design comprising the capacitor array in a metallization layer over a workpiece.
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Abstract
In one embodiment, a capacitor includes a first row including a first capacitor element and a second capacitor element coupled in parallel, and a second row including a third capacitor element and a fourth capacitor element coupled in parallel. The first row is coupled in series with the second row. In a metallization level over a workpiece, the second capacitor element is disposed between the first capacitor element and the third capacitor element. In the metallization level, the third capacitor element is disposed between the second capacitor element and the fourth capacitor element. The first, the second, the third, and the fourth capacitor elements are disposed in the metallization level.
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25 Claims
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1. A method of making a device, the method comprising:
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providing a first circuit design including a single capacitor having a first capacitance and a first area; generating a second circuit design by replacing the single capacitor with a capacitor array, the capacitor array comprising; a plurality of columns comprising capacitor elements in series, the plurality of columns coupled in parallel to form a plurality of rows, wherein the capacitance of each capacitor element in the plurality of columns has a value equal or smaller than the value of the first capacitance, wherein each capacitor element in the plurality of columns has an area less than the first area; and fabricating a circuit with the second circuit design comprising the capacitor array in a metallization layer over a workpiece. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making a device, the method comprising:
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providing a first circuit design including a single capacitor having a first capacitance; generating a second circuit design by replacing the single capacitor with a capacitor array, the capacitor array comprising; a plurality of columns comprising capacitor elements in series, the plurality of columns coupled in parallel to form a plurality of rows, wherein the capacitance of each capacitor element in the plurality of columns has a value of the first capacitance multiplied by a scaling ratio, wherein the scaling ratio is a total number of elements in a column in the plurality of columns divided by a total number of elements in a row in the plurality of rows; and fabricating a circuit with the second circuit design comprising the capacitor array in a metallization layer over a workpiece. - View Dependent Claims (7, 8, 9, 10)
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11. A method of making a device, the method comprising:
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providing a first circuit design including a single capacitor having a first capacitance; generating a second circuit design by replacing the single capacitor with a capacitor array having the first capacitance, the capacitor array comprising; a first column comprising a first capacitor element and a second capacitor element coupled in series, a second column comprising a third capacitor element and a fourth capacitor element coupled in series, wherein the first column is coupled in parallel with the second column; and fabricating a circuit with the second circuit design comprising the capacitor array over a workpiece, wherein the first, the second, the third, and the fourth capacitor elements are disposed in a same metallization layer, wherein the second capacitor element is disposed between the first capacitor element and the fourth capacitor element within a metallization level, wherein the fourth capacitor element is disposed between the second capacitor element and the third capacitor element within the metallization level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A capacitor comprising:
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a first row comprising a first capacitor element and a second capacitor element coupled in parallel; and a second row comprising a third capacitor element and a fourth capacitor element coupled in parallel, wherein the first row is coupled in series with the second row, wherein, in a metallization level over a workpiece, the second capacitor element is disposed between the first capacitor element and the third capacitor element, wherein, in the metallization level, the third capacitor element is disposed between the second capacitor element and the fourth capacitor element, wherein the first, the second, the third, and the fourth capacitor elements are disposed in the metallization level. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification