A smart card

A smart card is provided to maximize the competitive force of the smart card by increasing the convenience for the smart card by easily checking the information of the smart card. A smart card includes a circuit board(13). The circuit board includes an RF(Radio Frequency) chip(20), an RF antenna(30), a display part(40), a capacitor(60) and a controller(70). The RF chip includes a CPU(Central Process Unit), a memories, an RF(Radio Frequency) module, and a power supply. The RF module performs conversion between an RF signal and a digital signal. The RF antenna performs communication with a terminal of the smart card. The display part displays data stored in the RF chip. The capacitor supplies the circuit board with power. The controller controls the RF chip, the RF antenna, the display part, and the capacitor.