@Kesav Sundar Your name in Demat, PAN, Bank should be same. Father's name is not that relevant for application. Even if some alphabet here and there is present in your name and some mismatch is there due to it, no issues generally arise.
For eg. one of my relatives has full name mentioned in PAN. But in demat and bank its the initials of first and middle name along with surname. That person has received many allotments, recently in Jyoti CNC.
Crux is, minor mismatches do not matter if initials name and full name are same.