abstract |
An insulating film according to an embodiment of the present invention has Chemical Formula 1 n n n n n n n n n n n n wherein the Rs are equal to or different from each other, m is an integer, the Rs have Chemical Formula 2:n nR= R 1 R 2 R 3 , (2)n nandn n R1, R2, and R3 in the Chemical Formula 2 are one selected from Chemical Formulae 3, 4 and 5, respectively (n is an integer): |