Progress at Cambridge Display Technology

Dr Jonathan Halls of CDT described his technology at a recent conference in Europe and pointed out extra benefits such as low temperature performance when LCD displays on cellphones scarcely work on a cold day. There is considerable scope to improve light generation. In addition, "a lot of the light is lost". He mentioned 35%. Lifetimes have hugely improved with over 80,000 hours for blue being quoted and 250,000 for yellow. CDT is working with new acquisition Litrex to replace vacuum and other slow processes. Ink jet is seen as promising for large area displays but many aspects need to be improved over a standard ink jet printer including:

 

Accurate XY registration, 200 dpi, multiple heads, fast robotics, reliable high speed jetting, auto maintenance, jetting setup and calibration. Litrex has sold 30 printers that address most of this for medium sized displays and now it is developing one that does one meter widths.

 

Source: CDT

 

OTB Engineering is developing the world's first fully automated in-line P-OLED manufacturing plant with only 40 minutes to make a display and CDT considers this to be very significant.