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Decoupling Capacitor Circuitry

A technology of capacitors and integrated circuits, applied in the field of integrated circuits with decoupling capacitors, can solve the problem of decoupling capacitors occupying valuable surface area of ​​integrated circuits

Active Publication Date: 2016-09-28
ALTERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large decoupling capacitors take up too much valuable surface area on the IC

Method used

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  • Decoupling Capacitor Circuitry
  • Decoupling Capacitor Circuitry
  • Decoupling Capacitor Circuitry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Additional Example 1. An integrated circuit comprising: a first terminal and a second terminal; a semiconductor substrate; an insulator layer on the semiconductor substrate; a conductor on the insulator layer configured to function as a first conductive structure of an integrated circuit capacitor, wherein the conductor is electrically a second conductive structure coupled to the first terminal; and at least one density-compliant structure electrically coupled to the second terminal and configured to function as an integrated circuit capacitor.

Embodiment 2

[0061] Additional Example 2. An integrated circuit as defined in additional embodiment 1, wherein the density-compliant structure comprises polysilicon.

Embodiment 3

[0062] Additional Example 3. An integrated circuit as defined in additional embodiment 2, wherein the conductor comprises a polysilicon gate structure.

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Abstract

Embodiments of the present disclosure relate to decoupling capacitor circuitry. An integrated circuit with decoupling capacitor circuitry is provided. The decoupling capacitor circuitry may include structures that meet density guidelines. Structures meeting density guidelines can be connected to metal paths driven by power lines. Connecting dummy structures that meet density criteria in this manner can increase the capacitance per unit area of ​​the decoupling capacitor circuitry. Connecting dummy structures that meet the density criteria in this way can shield the decoupling capacitors from nearby noise signal sources.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 13 / 175,724, filed July 1, 2011, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates generally to integrated circuits, and more specifically, to integrated circuits with decoupling capacitors. Background technique [0004] Decoupling capacitors are often used to help provide a more stable supply voltage to circuitry on integrated circuits. Decoupling capacitors shunt high-frequency noise on the direct current (DC) power line to the ground power line, preventing the noise from reaching powered circuit components. In situations where the power supply is required to switch between various modes of operation, sufficient decoupling capacitance can be used as an energy reserve to reduce the magnitude of undesired dips in the power supply voltage during mode switching events. [0005] Advances in inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/06H01L29/94H01L21/02
CPCH01L27/0207H01L27/0629H01L27/0805H01L28/60H01L29/94
Inventor C·H·库尔
Owner ALTERA CORP