Everything You Need to Know About TV Technologies
LCoS Rear-Projection
Contents
It’s like a hybrid between LCD and DLP rear-projection technologies. LCoS stands for liquid crystal on silicon and follows the same reflexive concept from DLP; only instead of a tiny mirror-covered chip, it uses a coating of several individual liquid crystals. The light hits the silicon chip and is reflected by each stimulated liquid crystal forming the image. Color is generated through two methods: a spinning colored wheel akin to DLP technology, or a display chip per primary color, with the images being combined optically. Screen resolution reaches Full HD (1080 pixels). Sony’s SXRD (Silicon X-tal Reflective Display) and JVC’s D-ILA (Digital Direct Drive Image Light Amplifie
r) are proprietary variations of LCoS technology. Heralded as the future of rear-projection, LCoS is being dropped by several companies such as LG and Sony.
Model example: JVC HD70FH96 (70")
Strong points
- Reaches higher resolution than those of LCD rear-projectors.
- No “screen-door effect.”
- No risk of defective pixels.
- Chip substitution can be expensive.
- High contrast and color fidelity.
Weak points
- Expensive.
- Dropped by major companies.