Invention Application
US20120292719A1 HIGH-K METAL GATE DEVICE 有权
高K金属门装置

HIGH-K METAL GATE DEVICE
Abstract:
A device includes a substrate with a device region surrounded by an isolation region, in which the device region includes edge portions along a width of the device region and a central portion. The device further includes a gate layer disposed on the substrate over the device region, in which the gate layer includes a graded thickness in which the gate layer at edge portions of the device region has a thickness TE that is different from a thickness TC at the central portion of the device region.
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