an electronics case for a portable electronic device with an electroluminescent panel for displaying light patterns in response to sound , vibration or other input signals . the case includes an integrated control circuit for receiving input signals from an input device and , in response , generating a set of elp pattern signals that are transmitted to the elp . the integrated control circuit also includes a power supply connected to the controller for supplying power to the integrated control circuit and the elp . the elp comprises a plurality of segments and it is affixed to the exterior surface of the case to attract attention to the light patterns as they are being displayed on the elp .