| 摘要 |
PROBLEM TO BE SOLVED: To reduce complicateness of the installation work by lightening wiring, and also to prevent an image from being disturbed and malfunctioning by a loop current by preventing a ground loop from being formed. SOLUTION: Each light emitting (display) unit 30 contains a light emitting element 38 corresponding to one or plural pieces of pixels. An input signal is inputted to each predetermined number of the display units 30 by using common wiring 4 from a signal processing part 2. An input part of each display unit 30 is provided with a pulse transformer 33, and the input signal is inputted via the transformer 33. The input signal contains at least an address data for identifying a display unit 30 to be supplied with the input, and an image data for driving the display element 38. Each display unit 30 judges whether or not the inputted input signal is addressed to the self based on the address data, and when the signal is the one to the self, the unit extracts the image data from the input signal and drives the light emitting element 38 with the image data. |
