US 12,113,039 B2
Low pressure sintering powder
Shamik Ghoshal, South Plainfield, NJ (US); Nirmalya Kumar Chaki, South Plainfield, NJ (US); Poulami Sengupta Roy, South Plainfield, NJ (US); Siuli Sarkar, South Plainfield, NJ (US); and Anubhav Rustogi, South Plainfield, NJ (US)
Assigned to Alpha Assembly Solutions Inc., Waterbury, CT (US)
Filed by ALPHA ASSEMBLY SOLUTIONS INC., South Plainfield, NJ (US)
Filed on Apr. 30, 2021, as Appl. No. 17/245,397.
Application 17/245,397 is a continuation of application No. 15/302,827, granted, now 10,998,284, previously published as PCT/GB2015/051096, filed on Apr. 10, 2015.
Claims priority of application No. 1023/DEL/2014 (IN), filed on Apr. 11, 2014.
Prior Publication US 2021/0249376 A1, Aug. 12, 2021
Int. Cl. H01L 23/00 (2006.01); B22F 1/052 (2022.01); B22F 1/102 (2022.01); B22F 1/107 (2022.01); B22F 1/17 (2022.01); B22F 7/04 (2006.01); B23K 1/00 (2006.01); B23K 35/02 (2006.01); B23K 35/30 (2006.01); B23K 35/36 (2006.01); B23K 35/365 (2006.01); B23K 101/40 (2006.01); B23K 103/00 (2006.01); H01B 1/22 (2006.01); H01L 25/00 (2006.01); H05K 3/32 (2006.01); H10K 50/842 (2023.01)
CPC H01L 24/29 (2013.01) [B22F 1/052 (2022.01); B22F 1/102 (2022.01); B22F 1/107 (2022.01); B22F 1/17 (2022.01); B22F 7/04 (2013.01); B23K 1/0016 (2013.01); B23K 35/025 (2013.01); B23K 35/3006 (2013.01); B23K 35/3601 (2013.01); B23K 35/3613 (2013.01); B23K 35/3618 (2013.01); B23K 35/365 (2013.01); H01B 1/22 (2013.01); H01L 24/11 (2013.01); H01L 24/13 (2013.01); H01L 24/27 (2013.01); H01L 24/32 (2013.01); H01L 24/81 (2013.01); H01L 24/83 (2013.01); B22F 2007/047 (2013.01); B22F 2301/255 (2013.01); B22F 2302/45 (2013.01); B23K 2101/40 (2018.08); B23K 2103/56 (2018.08); H01L 24/16 (2013.01); H01L 24/48 (2013.01); H01L 24/73 (2013.01); H01L 24/92 (2013.01); H01L 25/50 (2013.01); H01L 2224/0401 (2013.01); H01L 2224/04026 (2013.01); H01L 2224/05155 (2013.01); H01L 2224/05644 (2013.01); H01L 2224/11003 (2013.01); H01L 2224/1132 (2013.01); H01L 2224/11334 (2013.01); H01L 2224/131 (2013.01); H01L 2224/13339 (2013.01); H01L 2224/13347 (2013.01); H01L 2224/13355 (2013.01); H01L 2224/13387 (2013.01); H01L 2224/1339 (2013.01); H01L 2224/13439 (2013.01); H01L 2224/1349 (2013.01); H01L 2224/13499 (2013.01); H01L 2224/16227 (2013.01); H01L 2224/27003 (2013.01); H01L 2224/271 (2013.01); H01L 2224/27332 (2013.01); H01L 2224/27436 (2013.01); H01L 2224/27505 (2013.01); H01L 2224/2929 (2013.01); H01L 2224/29339 (2013.01); H01L 2224/29347 (2013.01); H01L 2224/29355 (2013.01); H01L 2224/29387 (2013.01); H01L 2224/2939 (2013.01); H01L 2224/29439 (2013.01); H01L 2224/2949 (2013.01); H01L 2224/29499 (2013.01); H01L 2224/32145 (2013.01); H01L 2224/32146 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/32245 (2013.01); H01L 2224/48227 (2013.01); H01L 2224/48247 (2013.01); H01L 2224/73265 (2013.01); H01L 2224/81075 (2013.01); H01L 2224/81192 (2013.01); H01L 2224/81203 (2013.01); H01L 2224/8121 (2013.01); H01L 2224/8184 (2013.01); H01L 2224/81948 (2013.01); H01L 2224/83075 (2013.01); H01L 2224/83191 (2013.01); H01L 2224/83192 (2013.01); H01L 2224/83203 (2013.01); H01L 2224/8321 (2013.01); H01L 2224/83439 (2013.01); H01L 2224/83447 (2013.01); H01L 2224/8384 (2013.01); H01L 2224/83948 (2013.01); H01L 2224/92247 (2013.01); H01L 2224/94 (2013.01); H01L 2924/00014 (2013.01); H01L 2924/0665 (2013.01); H01L 2924/12041 (2013.01); H01L 2924/12044 (2013.01); H01L 2924/1461 (2013.01); H01L 2924/20102 (2013.01); H01L 2924/20103 (2013.01); H01L 2924/20104 (2013.01); H01L 2924/20105 (2013.01); H01L 2924/20106 (2013.01); H01L 2924/20107 (2013.01); H01L 2924/20108 (2013.01); H01L 2924/20109 (2013.01); H01L 2924/2011 (2013.01); H01L 2924/206 (2013.01); H01L 2924/2064 (2013.01); H05K 3/321 (2013.01); H10K 50/8426 (2023.02)] 29 Claims
OG exemplary drawing
 
1. A sintering powder comprising:
a particulate, wherein the particulate comprises:
from 1 to 19 wt % of a first type of metal particles having a mean longest dimension of from 100 nm to 20 μm, wherein the first type of metal particles is at least partially coated with a first capping agent comprising oleic acid and has a D50 of from 1 to 3 μm;
from 81 to 99 wt % of a second type of metal particles having a mean longest dimension of from 5 to 75 nm, wherein the second type of metal particles is at least partially coated with a second capping agent comprising octylamine; and
a total capping agent concentration of up to 5 wt %.