ROHM has recently completed development of an ultra-compact LED featuring both the smallest volume and area in the world. The SML-P12 series (PicoLED^TM) is ideally suited for devices requiring thin, compact components, such as mobile phone keypads, small dot-matrix units, and compact seven-segment display devices. PicoLED has been announced two days ago and it will go into mass production in April.
The company aim to create 10 million of the tiny 1.0 x 0.8mm diodes every single month. Currently, the smallest LED is one that measures 1.6 x 0.8mm. Both LEDs are only 0.2mm thick. If you happen to be an electronics giant then you can get a sample this month only for 100 yen each.

A full lineup is available in a variety of colors: red, orange, yellow, green, blue, and white, and all of the light-emitting elements are of the high-reliability four-element (InGaAlP) or high-luminosity (InGaN) type, ensuring continuous, long-term, reliable operation.:: Via Plastic Bamboo