Patent ID: 7564441

Claim:
A method of manufacturing a display apparatus comprising: providing a display section formed of pixels disposed in a matrix on a transparent, insulating substrate; providing a plurality of horizontal driving circuits mounted on the substrate for writing display data into the pixels in the display section; and providing a data processing circuit mounted on the substrate for processing a display data signal having a first voltage amplitude input in series and which outputs processed display data to the plurality of horizontal driving circuits, wherein the data processing circuit comprises: first level-conversion means for level-converting the display data signal having the first voltage amplitude to a display data signal having a second voltage amplitude larger than the first voltage amplitude; serial-parallel conversion means for converting the display data signal level-converted by the first level-conversion means to parallel display data signals; and second level-conversion means for level-converting the parallel display data signals to display data signals having a third voltage amplitude smaller than the second voltage amplitude.