According to a press release
This month, Sony Corporation will commence mass production of a full-color Organic Light Emitting Diode (hereafter OLED) display, which will be first implemented in the new Sony CLIE ‘PEG-VZ90′ personal entertainment handheld [...].
The top-emitting, 3.8 inch display sports a resolution of 480×320 and a brightness of 150 cd per square meter.

