There's thin. Then there's paper thin. Sony showed an electroluminescent (EL) display that's print-paper thin at the Display2008 conference in Tokyo.
The Sony EL display is based on organic light-emitting diode (OLED) technology that uses electroluminescent organic materials. OLED panels are extremely thin because they don't need backlights. The electroluminescent layer contains a polymer substance that directly converts electricity to light.