Disclosed are an apparatus and a method for recognizing a location of an object using radio frequency Identification. The liquid crystal display device includes a TFT substrate, a CF substrate of a size smaller than a size of the TFT substrate, and a liquid crystal layer sandwiched between the TFT substrate and the CF substrate. The release mechanism allows a single ball to fall from the shoot in response to the activation thereof. The power amplifier thus exhibits better linearity and efficiency than offered by conventional techniques and topologies. The server may further be configured to admit only a selected subset of the locatable mobile devices into the network for purposes of network based positioning and deny admission to the remaining locatable mobile devices, wherein the selected subset can be determined based on an attribute of the mobile device andor a characteristic of the user of the mobile device. A plasma display panel according to an embodiment of the present invention includes barrier ribs partitioning off each of the discharge cells; and a light-shielding layer formed along the barrier ribs, the width of the light-shielding layer is different in accordance with the discharge cell.