I'm sure there is no open datasheet about the display
because there never is one for handy displays.
That's because they are OEM products.
But that does't mean to stop here. A beginning is to search
for an alternate display with (nearly) the same specs but
with open datasheet. This is a goot starting point because
they don't create a new interface for every display!
Here some links:http://www.toshibadisplays.com/http://www.semicon.toshiba.co.jp/eng/index.htmlhttp://www.tmdisplay.com/tm_dsp/en/product/index.html