Electro-luminescent light emission device with vibration dampening

An EL light emission device includes an expanded plastic layer provided on at least one of front and rear surfaces of an EL panel, serving as a damping layer to absorb vibration. The expanded plastic layer has air pockets existing therein, and absorbs vibration thereby substantially preventing the vibration from propagating to the circuitry of an associated electronic device (e.g., the portable telephone). This reduces the amount of noise in the electronic device, and in turn, performance is improved.