Patent ID: 7492378
Filing Date: 2009-02-17
Classification: G02B,G09F

Abstract:
1. An image display system comprising: a light source for projecting a light; a light source control unit for controlling an illumination intensity and/or light emission time of the light projected from said light source; and an SLM (Spatial Light Modulator) having a plurality of pixel elements, wherein each of said pixel elements of the SLM further including a micromirror supported on an elastic hinge for flexibly tilting to different deflection angles for modulating the light projected from the light source for controlling an amount of light reflected from said SLM, wherein the light source control unit controls the light source during at least one time slice in one frame period, and each of said pixel elements of the SLM further comprising an ON electrode and an OFF electrode for controlling said micromirror to operate in an intermediate state between an ON state and an OFF state for modulating the the light projected from the light source in the time slice for reducing a controllable minimum increment amount of light reflected from said SLM wherein said controllable minimum increment amount of light reflected form each of said micromirror is smaller than an amount of light reflected from said micromirror controllable by applying a least significant bit (LSB) of an image control word for increasing a number of controlling gray scales of a display image of said image display system.