Upon disassembling the phone (see ../dpl10-component-pics.zip for instructions
and pictures) and removing the LCD module, I was able to read the markings on
the "flex tail" coming out of it, and identify it as Giantplus GPM526A0.

I have not succeeded in finding a datasheet for this LCD module, but according
to OsmocomBB, it uses a Samsung S6B33B1X driver chip.  The datasheet for the
latter was readily findable, and is included in this directory.