Abstract:
A method includes measuring a topography of a semiconductor wafer. A distortion function is generated based on the measured topography. Measured alignment data associated with the semiconductor wafer is adjusted using the distortion function. At least one correction factor for an exposure tool is generated based on the adjusted alignment data. The exposure tool is configured based on the at least one correction factor.
Abstract:
Methods for fabricating integrated circuits are provided. In one example, a method for fabricating an integrated circuit includes forming a substantially periodic array of a plurality of topographical features including a plurality of etch resistant topographical features and at least one graphoepitaxy feature. The plurality of etch resistant topographical features define a plurality of etch resistant confinement wells and the at least one graphoepitaxy feature defines a graphoepitaxy confinement well that has a different size and/or shape than the etch resistant confinement wells. A block copolymer is deposited into the confinement wells. The block copolymer is phase separated into an etchable phase and an etch resistant phase. The etch resistant topographical features direct the etch resistant phase to form an etch resistant plug in each of the etch resistant confinement wells.
Abstract:
Methods for fabricating integrated circuits are provided. In one example, a method for fabricating an integrated circuit includes forming a substantially periodic array of a plurality of topographical features including a plurality of etch resistant topographical features and at least one graphoepitaxy feature. The plurality of etch resistant topographical features define a plurality of etch resistant confinement wells and the at least one graphoepitaxy feature defines a graphoepitaxy confinement well that has a different size and/or shape than the etch resistant confinement wells. A block copolymer is deposited into the confinement wells. The block copolymer is phase separated into an etchable phase and an etch resistant phase. The etch resistant topographical features direct the etch resistant phase to form an etch resistant plug in each of the etch resistant confinement wells.