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US 7,115,515 B2Granted
Methods for forming capacitor structures
AssigneeMicron Technology, Inc.
InventorNishant Sinha
Life of this patent
Estimating the term…
Abstract
The invention includes methods of forming capacitor structures and removing organic material. An organic material, such as a photoresist, is disposed on a substrate. The organic material is contacted with a chemical mechanical polishing pad and a polishing fluid to remove the organic material from the substrate. The polishing fluid can be essentially free of particles, and can be water.
Claims8
A method for forming a capacitor structure comprising:
- providing a substrate comprising an insulative layer over a semiconductive layer, the insulative layer having a recess therein, the recess having a periphery comprising a bottom and sidewalls, wherein the bottom comprises an upper surface of the semiconductive layer;
- forming a first conductive-material-comprising layer over the substrate, the first conductive-material-comprising layer lining the bottom and the sidewalls to partially fill the recess and extending laterally outward from the recess over an upper surface of the substrate;
- filling the partially filled recess with an organic material, the filling forming an organic material layer over an upper surface of the first conductive-material-comprising layer;
- removing at least a portion of the organic material with a pad and an organic-material-removing fluid, wherein the organic-material-removing fluid is substantially unreactive with the first conductive-material-comprising layer and comprises less than or equal to 0.1 weight percent particles at an initiation of the removing;
- stopping the removing when substantially all of an upper surface of the laterally extending first conductive-material-comprising layer is exposed;
- forming a dielectric layer over the first conductive-material-comprising layer;
- and
- forming a second conductive-material-comprising layer over the dielectric layer.
5 more elements
Dependencies are inferred from the claim text.