Patent ID: 9406507
Filing Date: 2016-08-02
CPC Classification: H01J,H01L

Claim Text:
1. A device, comprising: a first crystalline material; a non-crystalline layer formed over the first crystalline material, wherein an angled trench is formed through the non-crystalline layer so that the first crystalline material is at a bottom of the angled trench; a second crystalline material formed in the angled trench by epitaxial growth, wherein the first crystalline material and the second crystalline material have mismatched lattice dimensions, and a projection of a sidewall of the angled trench on a top surface of the first crystalline material is longer than the bottom of the angled trench; and a vertical portion of the second crystalline material extending above the angled trench, wherein the vertical portion of the second crystalline material has a width narrower than the angled trench.