PATENT CLAIM ANALYSIS

Application Number: 16245555
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-06
Patent Classification: ["438", "693000"]

Abstract:
Chemical mechanical polishing (CMP) compositions, methods and systems for polish cobalt or cobalt-containing substrates are provided. Dual, or at least two chelators were used in the CMP polishing compositions as complexing agents for achieving the unique synergetic effects to afford high, tunable Co removal rates and with low static etch rates on Co film surface for the efficient Co corrosion protection during CMP process. The cobalt chemical mechanical polishing compositions also provide very high selectivity of Co film vs. other barrier layers, such as Ta, TaN, Ti, and TiN, and dielectric film, such as TEOS, SiNx, low-k, and ultra low-k films.

Claim (Index 10):
A chemical mechanical polishing (CMP) system comprising:\n a semiconductor substrate having a surface containing a first material and at least one second material;\n wherein the first material is Co and the second material is selected from the group consisting of dielectric film, low-k and ultra low-k film, and barrier film; \n a polishing pad; a chemical mechanical polishing composition comprising\n 0.005 wt. % to 25 wt. % of an abrasive; \n 0.05 wt. % to 10 wt. % of at least two chelators; \n water; and \n at least one selected from the group consisting of: \n 0.0005 wt. % to 0.25 wt. % of a chemical additive as corrosion inhibitor or a defect reducing agent; \n 0.005 wt. % to 0.5 wt. % of a pH adjusting agent; \n 0.1 wt. % to 10 wt. % of an oxidizing agent; \n 0.0001 wt. % to 0.10 wt. % of biocide; and \n 0.0005 wt. % to 0.15 wt. % of a surfactant;\n wherein the chemical mechanical polishing (CMP) polishing composition having a pH from 3.5 to 8.5; and the at least two chelators are amino acids independently selected from the group consisting of DL-Alanine, D-Alanine, L-Alanine, Glycine, Serine, Proline, Histidine, Isoleucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, Valine, Asparagine, Aspartic acid, Glutamine, Ornithine, Selenocystein, Tyrosine, Sarcosine, Bicine, Tricine, Aceglutamide, N-Acetylaspartic acid, Acetylcarnitine, Acetylcysteine, N-Acetylglutamic acid, Acetylleucine, Acivicin, S-Adenosyl-L-homocysteine, Agaritine, Alanosine, Aminohippuric acid, L-Arginine ethyl ester, Aspartame, Aspartylglucosamine, Benzylmercapturic acid, Biocytin, Brivanib alaninate, Carbocisteine, N(6)-Carboxymethyllysine, Carglumic acid, Cilastatin, Citiolone, Coprine, Dibromotyrosine, Dihydroxyphenylglycine, Eflornithine, Fenclonine, 4-Fluoro-L-threonine, N-Formylmethionine, Gamma-L-Glutamyl-L-cysteine, 4-(\u03b3-Glutamylamino)butanoic acid, Glutaurine, Glycocyamine, Hadacidin, Hepapressin, Lisinopril, Lymecycline, N-Methyl-D-aspartic acid, N-Methyl-L-glutamic acid, Milacemide, Nitrosoproline, Nocardicin A, Nopaline, Octopine, Ombrabulin, Opine, Orthanilic acid, Oxaceprol, Polylysine, Remacemide, Salicyluric acid, Silk amino acid, Stampidine, Tabtoxin, Tetrazolylglycine, Thiorphan, Thymectacin, Tiopronin, Tryptophan tryptophylquinone, Valaciclovir, Valganciclovir, and combinations thereof; \n \n wherein Co is a metal inter-connection material; and at least a portion of the surface is in contact with both the polishing pad and the chemical mechanical polishing composition.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 99.0
- Lexical Diversity: 1.53247
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14800323', '15166605', '13929346', '15001846', '14598472']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8840005167900195
- 35 USC 102 Novelty (BERT): 0.6386720384581235
- Combined Prediction Score: 0.8594676689568299
- Mean Citation Score: 426.7263899999999
- Max Citation Score: 613.7401
- Similarity Product: 576.4034015606583

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test