Patent ID: 9716010
Date: 2017-07-25
CPC Classifications: H01L,Y10T

Claim:
1. A handle wafer comprising: a body portion with a recessed bottom surface forming a notch on an underside thereof; a square edge portion about a circumference of the bottom surface, the square edge portion forming a lip of the notch and having a first vertical surface and a horizontal surface; a sloped wall comprising a first slope surface extending directly from the first vertical surface, leading to an outer edge of the body portion; a second vertical surface in direct contact and leading from the first slope surface, the second vertical surface being at the outer edge of the body portion; and a second slope surface in direct contact and leading from the second vertical surface, the second slope surface extending toward an inner portion of the body portion, wherein relative to the bottom surface, the first slope surface is at an angle different than that of the first vertical surface and horizontal surface, wherein the first vertical surface of the square edge is in direct contact and leading from the horizontal surface, wherein the first slope surface and the second slope surface are sloped in different orientations, and wherein the first slope surface extends upward as it slopes away from the bottom surface and the second slope surface extends downward as it slopes away from a top surface, which is positioned on an opposing side of the bottom surface.