8. The mobile display apparatus as set forth in claim 1 , wherein: the display section includes a display element driven by a thin film element; and the text code input section, the video signal input section, the display control section, and the voice output control section are either directly provided on a thin film substrate on which a pixel driving circuit element of the display element is provided, or include active elements provided on another substrate which is bonded to the thin film substrate.
1. A mobile display apparatus serving as a client device of an external host apparatus, the mobile display apparatus comprising: a display section including a plurality of scanning lines arranged in a row and a plurality of signal lines arranged in a column and respectively intersecting with the scanning lines; a voice output section; a text code input section arranged to receive an input text code from the external host apparatus; a video signal input section arranged to receive an input video signal from the external host apparatus; a display control section arranged to display in the display section text corresponding to the input text code and including: a scanning line drive circuit defining a display section drive circuit that is arranged to drive the display section by sequentially supplying scanning signals to the scanning lines; and a signal line drive circuit arranged to supply video signals to the signal lines, the signal line drive circuit including a first signal line drive circuit that is arranged to receive the video signal from the video signal input section and a second signal line drive circuit that is arranged to receive a video signal corresponding to the text corresponding to the input text code; and a voice output control section arranged to output voice sounds corresponding to the input text code through the voice output section; wherein the text code input section outputs the input text code to the display control section and the voice output control section to display in the display section the text corresponding to the input text code, and to output the voice sounds corresponding to the input text code through the voice output section; the display control section displays in the display section both an image based on the input video signal supplied to the video signal input section and the text corresponding to the input text code so that the text is superimposed on the image; and the first signal line drive circuit and the second signal line drive circuit share the signal lines.