It is an object of the present invention to provide a liquid crystal display device in which a liquid crystal layer may form a stable transparent state and, in addition, which provides for a black display with an excellent viewing angle characteristic, as well as a high contrast ratio and a high response speed in liquid crystal display. A digit score is assigned to a digit within a barcode. The sauna anterior support and the sauna posterior support each feature a plurality of suction cups and a foam seal disposed on the sauna anterior support anterior side and the sauna posterior support posterior side, respectively. Furthermore, currentvoltage spectral data is calculated by the Fourier transformation of the power supply currentvoltage waveform data followed by displaying the currentvoltage spectral data as the result of the Fourier transformation.