I must be an idiot. When I read the title, I first thought it was a non-native English speaker asking about people who had Tamagotchis back in the day…
As in… a talking button you keep for a pet, not a button FOR your pet to use.
For me it’s the period next to the spacebar. I think my right thumb comes down at just the wrong angle to touch both at the same time. One of these days maybe I’ll wise up and change the layout… but not today.
The connector on the PCB is called a ZIF (zero insertion force) connector. Normally they are specified by the number of pins, the pitch of the pins, and whether there is any locking feature or “ear” on the sides of the ribbon cable. It looks like a standard latching connector made by any number of companies.
The ribbon cable looks like it is custom designed for the display’s electrical pin out and the mechanical design of the enclosure.
If you can figure out the mfg of the display itself, you should be able to figure out the ribbon cable pinout.
I know a fair bit about connectors and circuit fab, but not an EE so hopefully this helps!
Maybe I’m looking at the wrong thing, but I don’t see melted plastic. I see a collapsed bubble (a “fisheye”) in the conformal coating that is providing moisture resistance to the components.
On the chance you’re not just making a funny - The walls of your house keep inside stuff inside and outside stuff outside. A thermos is just a wall for heat, whether that heat is trying to get in or out.