Abstract: A mobile phone includes a control unit, a first wireless module coupled to the control unit, a second wireless module coupled to the control unit, a first transparent substrate having a first conductive line and a second transparent substrate having a second conductive line, fluorescent substances are formed between the first transparent substrate and the second transparent substrate, wherein a bias is applied to excite the fluorescent substances by combination of an electron and a hole to emit visible light, thereby removing backlight of the mobile phone. An antenna is disposed at side of the first transparent substrate to improve receiving or transmission.