Jerry A. Roush

AM OLED using a-Si TFT backplane on flexible plastic substrate

Amorphous silicon TFT technology continues to show promise for fabricating large area high resolution flexible AM OLED displays. This paper describes the recent progress in the flexible AM OLED development efforts at Honeywell since our publication in this conferences proceedings in 2003, describing the feasibility of fabricating a 64x64 pixel AM OLED on a flexible plastic substrate. In this paper we describe the design, and fabrication of a 160x160(x3) pixel AM OLED on a flexible plastic substrate with an equivalent 80cgpi resolution. Flexibility characteristics of the fabricated displays are discussed. Further advances and improvements required for extending the size and resolution of flexible AM OLED displays are discussed.

Current assessment of AM OLED technology for avionics applications

AM OLED continues to show promise for being the next generation display technology capable of replacing AM LCD in several of its present applications, including displays for aerospace applications. Commercial products such as DSCs (digital still cameras) and PDAs (personal digital assistants) using AM OLED displays have already been introduced. Technology demonstrators as large as 40-in diagonal AM OLED displays have been shown. We evaluated the performance of present COTS AM OLEDs with respect to avionics display requirements. In this paper we will review the current status of AM OLED technology by considering the performance capabilities of COTS and technology demonstration displays, and recent OLED device research results and make an assessment of AM OLED technology towards meeting the performance requirements of avionics displays. The technology gaps for achieving the desired performance for avionics display applications are identified.

FSC LCD technology for military and avionics applications

Field sequential color (FSC) liquid crystal displays (LCD) using a high speed LCD mode and an R, G, B LED backlight, offers a significant potential for lower power consumption, higher resolution, higher brightness and lower cost compared to the conventional R, G, B color filter based LCD, and thus is of interest to various military and avionic display applications. While the DLP projection TVs, and Camcorder LCD view finder type displays using the FSC technology have been introduced in the consumer market, large area direct view LCD displays based on the FSC technology have not reached the commercial market yet. Further, large area FSC LCDs can present unique operational issues in avionic and military environments particularly for operation in a broad temperature range and with respect to its susceptibility for the color breakup image artifact. In this paper we will review the current status of the FSC LCD technology and then discuss the results of our efforts on the FSC LCD technology evaluation for the avionic applications.

Biopolymer-based gate dielectric for organic field effect transistors

Organic field effect transistors (O-FETs) are of considerable interest for the development of flexible displays and a variety of other macro-electronic applications. We investigated a DNA-based biopolymer material as a gate dielectric for fabricating O-FET backplanes using the organic semiconductor material Pentacene having small geometry devices and improved performance characteristics required for high resolution displays. The results to date continue to show the potential of this approach for low-cost O-FET backplanes for the next generation flexible displays and other macro-electronic applications.