16-08-2011, 02:58 PM
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ABSTRACT
• Electronic projection display technology for high-brightness applications had its origins on the Gretag Eidophor,an oil film-based projection system developed in the
Early 1940s.
• More recently in response to various to various limitations of LCD technology high brightness system have been developed based on Digital Light Processing technology.
• A heart of the DLP projection display is the Digital Micromirror Device (DMD).
• DMD is a semiconductor based array of fast reflective digital light switches that precisely control a light source using a binary pulse width modulation technique.
• Key word used in this paper
o DMD
igital Micro mirror Device.
o DLP: Digital Light Processing.
o SLM: Spatial Light Modulation.
o MEMS: Spatial Light Modulate Micro-electromechanical Systems.
o DIPD: Digital Image Projection Displays.
INTRODUCTION
Digital light processsing system is based on the same principle as a prism .
where white light is broken into different color through refraction.
DLP is based on two general type
CRT- addressed LCD light valves
Active-matrix(AM)LCD panels
• The brightness(lumes) is plotted against the brightness efficiency(lumens/
watt).
• Three types of projection display technologies are compaired in figure1
o OIL-FILM
o CRT-LCD
o AM-CLD
Introduction
• As well as to provide superior image quality under the most demanding environmental conditions, high-brightness projection display systems have been developed based on digital light processing technology.
• DLP is based on a micro-electromechanical system(MEMS) device known as the digital micromirror device(DMD).
• The DMD,invented in 1987 at texas instruments, is a semiconductor-based array of fast,reflective digital light switches that precisely control a light source using a binary pulse width modulation technique.
• It can be combined with image processing, memory.a light source and optics to form a DLP system (figure2) capable of projecting large, bright,seamless,high-contrast color images.
ABSTRACT
• Electronic projection display technology for high-brightness applications had its origins on the Gretag Eidophor,an oil film-based projection system developed in the
Early 1940s.
• More recently in response to various to various limitations of LCD technology high brightness system have been developed based on Digital Light Processing technology.
• A heart of the DLP projection display is the Digital Micromirror Device (DMD).
• DMD is a semiconductor based array of fast reflective digital light switches that precisely control a light source using a binary pulse width modulation technique.
• Key word used in this paper
o DMD
igital Micro mirror Device.o DLP: Digital Light Processing.
o SLM: Spatial Light Modulation.
o MEMS: Spatial Light Modulate Micro-electromechanical Systems.
o DIPD: Digital Image Projection Displays.
INTRODUCTION
Digital light processsing system is based on the same principle as a prism .
where white light is broken into different color through refraction.
DLP is based on two general type
CRT- addressed LCD light valves
Active-matrix(AM)LCD panels
• The brightness(lumes) is plotted against the brightness efficiency(lumens/
watt).
• Three types of projection display technologies are compaired in figure1
o OIL-FILM
o CRT-LCD
o AM-CLD
Introduction
• As well as to provide superior image quality under the most demanding environmental conditions, high-brightness projection display systems have been developed based on digital light processing technology.
• DLP is based on a micro-electromechanical system(MEMS) device known as the digital micromirror device(DMD).
• The DMD,invented in 1987 at texas instruments, is a semiconductor-based array of fast,reflective digital light switches that precisely control a light source using a binary pulse width modulation technique.
• It can be combined with image processing, memory.a light source and optics to form a DLP system (figure2) capable of projecting large, bright,seamless,high-contrast color images.
