Abstract
The Need:
Most microdisplay-based projection systems built to date have used an HID lamp
such as the UHP as a light source. LEDs have begun to penetrate the projection
market and currently LED-based rear projection TV, companion pico-projectors
and ultra-portable projectors are commercially available. This penetration of
LEDs into the projection market is expected to continue and LED-based home
theater projectors have already been announced while development of LED
illumination for several other projector categories is ongoing. As a result,
there is a need for an evaluation of LEDs in terms of technology, price and
performance, and comparison of these parameters to the existing and forecast
markets for projection systems across a range of potential applications.
Report Objective:
The objective of this report is to provide technologists, managers, product
planners, engineers and researchers with the information needed to evaluate
LED technology in proposed projection displays. The required information
needed to make these decisions include performance data, cost information and
availability, all forecasted from 2008-2012. Since the projection market
includes segments that range from very low end to very high end, this report
evaluates LEDs suitable for projectors ranging from a few lumens up to about
2000 lumens.
This report focuses on the roadmaps for LED devices and supporting thermal
management and driving systems. This data is then applied to the analysis of
specific LED projection markets and applications in six separate and stand
alone Market Segment Analyses.
Highlights:
- Coverage of the use of high-brightness LEDs (HB-LEDs) in projection
displays, including both benefits and problems
- Optimized wavelengths and colorimetry of HB-LEDs to be used for projection
displays
- A description of current LED technology for visible-light HB-LEDs,
including both single color and white light LEDs
- Due to the negative effect of temperature on virtually all properties of a
HB-LED, there is an extensive discussion of thermal packaging to maintain the
lowest possible temperature.
- A discussion, including examples, of the optical and mechanical design of
HB-LEDs
- Evaluation of the optics of projection systems that can use LED
illumination
- Discussion of the drive circuit requirements for HB-LEDs in projection
applications
- A technology forecast for HB-LEDs including changes in the technology that
can be expected through 2012.
- Price forecasts for HB-LEDs, as a function of die area, color and quantity
per year. All price forecasts go through 2012.
- A table containing information on 242 companies involved in LEDs or LED
projection
- Profiles of 6 key LED manufacturers
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