How does this work? I don’t see any wires attached to the LCD, but when i press down on the rubber over the gold contacts some characters appear on the lcd
They are more common than you would think.
The well known and widely used 1602 and 2004 display modules rely on those zebra strips too.
The glass is pressed on these strips, and the strips are pressed on the module’s PCB by the metal bezel around the glass.
That’s why you shouldn’t mess with those bezels (unless you need to see what’s in there and don’t care about an eventual loss of the display).