Roger Green Stewart

35.2: Sub-Notebook a-Si Color SVGA Display with integrated Drivers

We have successfully designed and fabricated a SASID SVGA 8.4V AMLCD display. This is the largest Self-scanned Amorphous Silicon Integrated Display (SASID) built to date for use in laptop computers and PDAs. New circuits have been added for threshold drift cancellation to extend lifetime and special bussing techniques were used to reduce power dissipation.

18.2: Plastic Film Displays with NanoBlock® IC Drivers Integrated by Fluidic Self Assembly Process

We have built plastic displays for SmartCards by integrating high-quality, crystalline silicon NanoBlock IC drivers using a Fluidic Self Assembly (FSA®) process. With this low-cost, high-volume manufacturing approach, flexible peripheral driver strips are now being readied for application to commercial liquid crystal and OLED display products.

Rugged low-cost display systems

Alien technology has developed a family of rugged, plastic displays for portable devices like SmartCards, electronic signs, cellular telephones and military devices. These displays are driven by ultra-miniaturized silicon integrated circuits called NanoBlcok ICs that are put together using a Fluidic Self Assembly (FSA) process. This low-cost, high- volume manufacturing technique makes possible new types of liquid crystal and OLED display products.

Polycrystalline silicon thin-film CMOS technology: the poor man's SOI

The authors discuss the electrical characteristics of thin film polycrystalline silicon transistors and their various uses. The first major application of polysilicon transistors was in the fabrication of active matrix liquid crystal displays. Over 40000 devices are fabricated on a four inch glass wafer and are used to make write only dynamic memory type full wafer arrays. The second major application of polysilicon transistors is as a replacement for the polysilicon load resistor in static memories. Future applications include circuits where both bulk silicon transistors and low performance silicon-on-insulator polysilicon transistors are used in the same integrated circuit. Typical of these applications are arrays where different substrate biases are needed and where junction isolation is insufficient for the application.<<ETX>>

Polysilicon Active-Matrix Liquid Crystal Displays For Cockpit Applications

Virtual image and cockpit applications require high resolution, high brightness, high contrast, full color displays with grayscale and which are also lightweight, small in size and have low power consumption. These requirements are well matched to active-matrix liquid-crystal flat-panel displays. In particular, polysilicon active-matrix displays with their high performance and capability for integrated scanners are ideal candidates to satisfy cockpit display requirements. A design analysis is presented for two types of avionic display, a 1-in x 1-in, 1000 x 1000 pixel helmet-mounted display, and a 8-in x 8-in, 1024 x 1024 sub-pixel color cockpit display. The analysis will show that the performance requirements for the display can be met with existing polysilicon device performance and current photolithography equipment. A screen brightness of 75 ft-L can be obtained for the cockpit display, using fluorescent lamp backlighting. Grayscale is obtained through on-plate digital circuitry. The feasibility of many of these concepts has been demonstrated in the design of a 192 x 192 active-matrix array with integrated data and select scanners. The design features of this array, as well as its performance will be presented. The display is capable of showing real-time color NTSC TV signals, with limited grayscale capability. The display operates with a 180 frame/sec refresh rate, while the shift registers operate at speeds up to 2 MHz.