Perspective of MEMS based raster scanning display and its requirements for success

Abstract

The customers' demand for real life-like display with natural colors and high definition is increasing and hence laser display with the best expression of natural color is being proposed as a way to realize this. In particular, the raster scanning display using the high-speed reflective MEMS scanner plus compact laser sources enables realization of ultra-small optical engine with great optical efficiency. By the way, in recent years the emerging display systems including FPD (Flat Panel Display) and projection systems based on the microdisplay devices show rapid improvements in terms of picture quality, form factor as well as cost. The object of this paper is introducing a technology analysis of success factors of the MEMS based rater scanning display in order to get high-level development roadmap, through a comparison study with the conventional displays. Proper specifications of brightness, color, contrast, resolution, form factor, power consumption and cost-effectiveness are suggested for mobile projector application. The technical challenges toward achievement of the specifications are summarized.