A semi-transmissive liquid crystal display device is formed by sealing liquid crystal of negative dielectric anisotropy between a TFT substrate and a counter substrate, and has a transmission region controlling transmitted light and a reflection region controlling reflected light. A node scans for beacon signals, but does not engage in communication with another node in the network until data communication is required. The chip card module also includes a chip with connections which are arranged over the central region on the second side of the substrate, one of the connections being connected to the one contact region.