Unknown LCD display circuit design
The black blob is a custom IC called a "chip-on-board". The IC does not have a standard case like what we normally see when looking at a PCB. Instead, the die itself is glued to the PCB and has very fine wires coming out of it to connect to the board. The whole thing is encapsulated in the black resin to protect it from the elements.

In my experience, salvaging displays from this sort of thing is generally a lost cause--they are most often custom jobs and, while I'm sure you can find a way to reuse them, it will take a lot of time to determine the pinouts and how to control them.

It looks like the LCD is mounted to the PCB using a press-fit solution. Pressing it to the PCB connects the pads and the pins on the board and the display. By far not the best (can lead to intermittent connections if not done properly, or if the pads get dirty) but for a cheap toy it usually gets the job done. 

This answer briefly explains the chip-on-board concept.