Wow, 16 digit multiplexed driver chip.
Looks like com, is via I2c going by the pullup resistors.
http://ljy99731.13.dns222.net/download/LM1640_sch.pdf
Can select English here
http://www.titanmec.com/doce/product-detail-180.html
but the pdf doesn't seem to want to download.
http://www.titanmec.com/docc/product-detail-42.html Oriental anyone? translate.google.com not working.