Introduction to grating light value technology:

The grating light value technology is used to enhance the performance capabilities in optical systems. These are mainly used in projection display systems to improve the quality of the picture. In this paper we will be discussing about the linear array module of 1080 GLV pixels. The GLV pixels cab is fabricated in such a way by which switching rates can be obtained at the speed of 20 nano seconds. In this Optical Performance of the Grating Light Valve Technology Seminar paper we will discuss grating light value pixel implementation and its working model.

Brief on grating value technology:

These produce an electro-mechanical response which can be tuned and this used for increasing the performance in various applications. The grating light value pixels are in an addressable diffraction grating form which consists of moving parts made on a silicon chip.

In each grating light value pixel we find dual supported parallel ribbons which are made of silicon nitride and they are coated with reflected aluminum as a top layer. When all the pixels form a flat reflective plane then they get turn off. The GLV driver chips receive the data in a linear rate which is similar in function like LCD driver chips.


The linear grating light value has the capability to support 3 value color, frame sequential and line sequential systems. By employing this technology an unparalleled on screen response is achieved which has 99% uniformity, high contrast and greater corner to corner efficiency.

The efficiency of the grating light value pixels mainly depends on the aperture ratio, diffraction efficiency and reflectivity of the aluminum surface.

This Paper Includes:

  • GLV Device Fundamentals
  • The Linear GLV Array
  • Optical System Architecture
  • Image Quality and System Performance