CDT and Litrex pave way for new generation P-OLED
Cambridge Display Technology and Litrex Corporation are paving the way for the production of a new generation of high resolution polymer organic light emitting displays (P-OLED) through the development of an inkjet printing solution capable of producing P-OLED displays at up to 200 pixels per inch.
High resolution displays are becoming increasingly important for small to medium size display applications such as cell phones, where market research data indicates that consumers are demanding ever more sophisticated content for information and entertainment.
P-OLED displays provide an ideal combination of fast video response, high contrast and low power consumption.
Inkjet printing is currently the favoured means of producing 200 ppi displays on the large substrate sizes necessary for cost competitiveness. ULVAC subsidiary Litrex has already designed and delivered a variety of inkjet printers up to Gen 8 (2.4m x 2.4m glass size) to the display industry, but not for operation at these higher resolutions.
Litrex printers are capable of highly precise printing, and the achievement of 200ppi resolution will require inkjet drops to be placed with even greater accuracy and consistency.
The work will cover both hardware and software enhancements, mainly to take place at Litrex, as well as process developments at CDT including plasma pre-treatment, print strategy and film formation development. The work is expected to be completed by the second half of 2007.
Dr David Fyfe, CEO of CDT said: “The development of a high resolution manufacturing solution for P-OLED displays is extremely important to the display industry and will provide a scaleable approach to the production of high resolution, high added value displays. Our customers are already very excited at the prospect.”
CDT has also announces the sale of an inkjet printing system and associated know-how to the National University of Singapore. CDT expects this will boost the University’s already impressive rate of progress in the development of polymer electronics technologies.
In addition to installing a sophisticated Litrex 120 system, CDT will provide know-how based on extensive experience – gained at its technology development centre – of inkjet printing for the evaluation and pre-production of P-OLED displays.
NUS has built significant expertise in the exploratory development of polymer transistor and logic circuits for plastic semiconductor electronics research.
Inkjet printing is now becoming established as an important technique for the production of future P-OLED displays and plastic semiconductor electronics, combining the ability to print extremely small drops of fluids with high precision, good material utilisation and scalability to large substrate sizes.
• CDT has further announced the sale of a sophisticated Eclipse(TM) display test system to Merck OLED Materials GmbH, based in Frankfurt. The equipment will be used to enhance productivity in the development and evaluation of materials for organic light emitting diode displays.