LCD connector repair
This type of connection utilizes a conductive adhesive coating the ribbon which appears to be heat activated (or at least heat activate-able).  The active temperature is far below that of soldering.

On cheap, disposable examples, I've been able to remove it with a hair dryer (not a heat gun), and re-attach it by "ironing" with a large bent tip on a variable temperature soldering iron set to the lowest temperature.   But I'd be very hesitant to tackle this on something expensive, at least not without a better way to control tool temperature - soldering iron temperature controls really aren't intended to work that low and do not seem to give repeatable results.  If you had a way to monitor the temperature, you could try heating it to the desired point and then switching off the power.

I suspect industrially it is done with some sort of clamp that is quickly heated to a set temperature and then cooled.