Well, typically it takes up-to 30 days for Stock Split shares to credit into you online DEMAT Account.

Make sure you haven't pledged the shares (I heard from Customer Care that if shares are pledged, the split shares are held by the broker and don't get credited until the shares are un-pledged). If so, un-pledge the shares and you should soon see the split shares in your account.

Either way, if you don't get the split shares within 30 days, its time to call the customer care of the broker you are holding DEMAT Account with.