Clarence Chui

The iMoD display: considerations and challenges in fabricating MOEMS on large area glass substrates

QUALCOMM has developed and transferred to manufacturing iMoD displays, a MEMS-based reflective display technology. The iMoD array architecture allows for development at wafer scale, yet easily scales up to enable fabrication on flat-panel display (FPD) lines. In this paper, we will describe the device operation, process flow and fabrication, technology transfer issues, and display performance.

P‐46: Optimization of Subpixel Color Tiles for Mobile Displays

A key issue for the optimization of subpixel color tiles for mobile displays is to maximize the image quality, often defined in terms of brightness or reflectance, and color saturation, while minimizing display power consumption. for the mirasol™ display based on MEMS technology, the RGBY quad is found to be a structure that achieves a balance between reflectance and color saturation. Simulation results based upon demonstration devices are presented with discussions about proper image quality metrics for mobile displays.

26.1: Invited Paper: Driving mirasol® Displays: Addressing Methods and Control Electronics

A mirasol display uses optical interference based MEMS pixels with inherent hysteresis and is therefore passively addressable with a near zero power hold state. This paper describes methods of addressing such a display including a method providing low power and fast addressing. The correlation between pixel optical state and capacitance allows automated tuning and invisible adjustment of the drive voltages during operation. We further describe display drive circuit architecture showing the IC configuration for a mirasol display.

27.1: Determining the Appropriate Color Bit Depth for a Small Portable Display

Appropriate color bit depth for user acceptability of small portable displays depends on contrast ratio, gamut, gamma, pixel pitch, dither, size and uses. We determined target bit depth values for an interference-color reflective display, testing acceptability and artifact visibility using diverse observers and images in a display-Simulation optical system.