Systems and methods for manufacturing diamond coated wires
A method for designing a diamond coated wire for use in a wafer slicing system includes adjusting an initial diamond size distribution until an intermediate diamond size distribution is generated, wherein the intermediate diamond size distribution has a corresponding simulated penetration thickness value less than or equal a predetermined penetration thickness value, and wherein penetration thickness is a parameter proportional to a depth of subsurface damage that would occur when slicing an ingot using a diamond coated wire having an associated diamond size distribution. The method may include adjusting the intermediate diamond size distribution until a final diamond size distribution is generated, wherein the final diamond size distribution has a maximum diamond grit size that is substantially equal to a predetermined maximum diamond grit size, and manufacturing the diamond coated wire such that the diamond coated wire has a plurality of diamond grits that fit the final diamond size distribution.
1. A method for designing a diamond coated wire for use in a wafer slicing system, the method comprising:
adjusting an initial diamond size distribution until an intermediate diamond size distribution is generated, wherein the intermediate diamond size distribution has a corresponding simulated penetration thickness value less than or equal a predetermined penetration thickness value, and wherein penetration thickness is a parameter proportional to a depth of subsurface damage that would occur when slicing an ingot using a diamond coated wire having an associated diamond size distribution;
adjusting the intermediate diamond size distribution until a final diamond size distribution is generated, wherein the final diamond size distribution has a maximum diamond grit size that is substantially equal to a predetermined maximum diamond grit size; and
manufacturing the diamond coated wire such that the diamond coated wire has a plurality of diamond grits that fit the final diamond size distribution.
2. The method of claim 1 , wherein adjusting an initial diamond size distribution comprises adjusting a diamond size range of the initial diamond size distribution.
3. The method of claim 2 , wherein adjusting a diamond size range comprises reducing the diamond size range of the initial diamond size distribution.
4. The method of claim 2 , wherein reducing the diamond size range comprises reducing the diamond size range to approximately 8 microns.
5. The method of claim 1 , wherein adjusting an initial diamond size distribution comprises adjusting a standard deviation of the initial diamond size distribution.
6. The method of claim 5 , wherein adjusting a standard deviation comprises increasing the standard deviation of the initial diamond size distribution.
7. The method of claim 1 , wherein adjusting an initial diamond size distribution comprises maintaining an average diamond size of the initial diamond size distribution.
8. The method of claim 1 , wherein the predetermined penetration thickness value is approximately 5 microns.
9. The method of claim 1 , wherein adjusting the intermediate diamond size distribution comprises adjusting an average diamond size of the intermediate diamond size distribution.
10. The method of claim 9 , wherein adjusting an average diamond size of the intermediate diamond size distribution comprises increasing the average diamond size of the intermediate diamond size distribution.
11. The method of claim 1 , wherein the predetermined maximum diamond grit size is between approximately 20 microns and 23 microns.
12. The method of claim 1 , wherein the simulated penetration thickness value is an average penetration thickness value.
13. The method of claim 1 , wherein the simulated penetration thickness value is a maximum penetration thickness value.
14. The method of claim 1 , wherein penetration thickness is defined as a thickness of ingot material that a diamond grit oriented substantially orthogonal to a resulting wafer surface would need to cut through to reach the resulting wafer surface.
15. The method of claim 1 , wherein adjusting an initial diamond size distribution comprises:
reducing a diamond size range of the initial diamond size distribution; and
increasing a standard deviation of the initial diamond size distribution.
16. A diamond coated wire for use in a wafer slicing system, the diamond coated wire comprising a plurality of diamond grits fitting a predetermined diamond size distribution, wherein the predetermined diamond size distribution has a simulated penetration thickness value less than or equal to approximately 5 microns, wherein penetration thickness is a parameter proportional to a depth of subsurface damage that would occur when slicing an ingot using the diamond coated wire, and wherein the predetermined diamond size distribution has a maximum diamond grit size between approximately 20 microns and 23 microns.
17. The diamond coated wire of claim 16 , wherein the predetermined diamond size distribution has a diamond size range less than or equal to approximately 8 microns.
18. The diamond coated wire of claim 16 , wherein the predetermined diamond size distribution has a diamond size range that extends from approximately 12 microns to 20 microns.
19. The diamond coated wire of claim 16 , wherein the predetermined diamond size distribution has a standard deviation greater than or equal to approximately 1.6 microns.
20. The diamond coated wire of claim 16 , wherein the predetermined diamond size distribution has a standard deviation greater than or equal to approximately 3.2 microns.