公开(公告)号：US10428240B2

公开(公告)日：2019-10-01

申请号：US15118723

申请日：2015-01-23

Applicant: KCTECH CO., LTD.

Inventor： Jang Kuk Kwon ,  Chan Un Jeon ,  Ki Hwa Jung ,  Jung Yoon Kim ,  Nak Hyun Choi ,  Seong Pyo Lee ,  Bo Hyeok Choi

IPC: C09G1/02 ,  C09K3/14 ,  H01L21/306 ,  H01L21/3105 ,  H01L21/321

Abstract: The present invention relates to a method for preparing a slurry composition and a slurry composition prepared thereby, and has advantages of reducing scratches and residual particles, which are considered to be one of the biggest factors contributing to the decline in yield due to macroparticles and aggregated particles, while maintaining a high polishing rate, in a semiconductor CMP process. Furthermore, the present invention can achieve excellent results in the application to various patterns required in the ultra-large scale integration semiconductor process, the wafer non-uniformity (WIWNU) exhibiting a polishing rate, polishing selectivity, and polishing uniformity, which meet the needs, and the micro-scratch minimization.

公开(公告)号：US10421883B2

公开(公告)日：2019-09-24

申请号：US15386502

申请日：2016-12-21

Applicant: KCTECH CO., LTD.

Inventor： Jang Kuk Kwon ,  Sung Pyo Lee ,  Chang Gil Kwon ,  Jun Ha Hwang

IPC: C09G1/02 ,  C09G1/04 ,  C09K3/14 ,  H01L21/304 ,  H01L21/3105 ,  H01L21/321

Abstract: An abrasive particle-dispersion layer composite and a polishing slurry composition including the abrasive particle-dispersion layer composite are provided. The abrasive particle-dispersion layer composite includes abrasive particles, a first dispersant that is at least one cationic compound among an amino acid, an organic acid, polyalkylene glycol and a high-molecular polysaccharide coupled to a glucosamine compound, and a second dispersant that is a cationic polymer including at least two ionized cations in a molecular formula.