Patent ID: 11876137
Assignee: RICOH COMPANY, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C  G | IPC C  G  H

Claim 9:
10. A coating liquid suitable for forming insulating film, the coating liquid comprising:
a silicon-containing compound;
an inorganic alkaline earth metal compound;
an organic aluminum compound and/or an organic boron compound, and
a solvent,
wherein the organic aluminum compound, if present, comprises an acyloxy group, an acetylacetonato group, and/or a sulfonic acid group, and
wherein the organic boron compound, if present, comprises triethyl borane, (R)-5,5-diphenyl-2-methyl-3,4-propano-1,3,2-oxazaborolidine, 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, bis(hexyleneglycolato)diboron, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, tert-butyl-N-[4-(4,4,5,5-tetramethyl-1,2,3-dioxaborolan-2-yl)phenyl]carbamate, phenyl boronic acid, 3-acetylphenyl boronic acid, boron trifluoride acetic acid complex, boron trifluoride sulfolane complex, 2-thiophene boronic acid, and/or tris(trimethylsilyl) borate,
wherein a ratio of the silicone-containing compound and the inorganic alkaline earth metal compound based on oxide conversion thereof is 30.0 mol % to 95.0 mol %: 5.0 mol % to 40.0 mol %.