Each horizontal driving section and a driving control section of a display apparatus
have a data communicating function. The driving control section has a first communicating
section receiving data from an external device and a second communicating section
communicating data with each horizontal driving section. The second communicating
section adds individual identification information for identifying each horizontal
driving section to the transferred data, and transfers the data in packet format.
The horizontal driving section receives the data packet for it based on the identification
information, and performs current driving for a display section. The driving control
section adds the individual identification information to the control data to be
transferred to each horizontal driving section corresponding to connecting form
of the horizontal driving sections, and transfers the control data not concerned
with connecting order of the horizontal driving sections. The horizontal driving
section side performs a receiving process and lighting operation.