A display device having a multi-view display panel for displaying, on the common screen, individual images for more than one viewing direction and having image quality adjustment circuits for individually adjusting the quality of an image corresponding to each of the individual images. The system includes a data input portion that communicates first information regarding a payment request, as well as a decision reference data store for communicating second information regarding parameters for use in determining a payment option for the payment request. This phase-changeable diode may include a lower electrode pattern on the semiconductor substrate, a first phase-changeable pattern on the lower electrode pattern and a gate switching layer pattern on the first phase-changeable pattern. The LED and LED mount are immersed in the thermally conductive liquid.