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- Digital_micromirror_device abstract "The digital micromirror device, or DMD, is an optical semiconductor (see MOEMS) that is the core of the trademarked DLP projection technology from Texas Instruments (TI). The DMD was invented by solid state physicist and TI Fellow Emeritus Dr. Larry Hornbeck in 1987.The DMD project began as the Deformable Mirror Device in 1977 using micromechanical analog light modulators. The first analog DMD product was the TI DMD2000 airline ticket printer that used a DMD instead of a laser scanner.A DMD chip has on its surface several hundred thousand microscopic mirrors arranged in a rectangular array which correspond to the pixels in the image to be displayed. The mirrors can be individually rotated ±10-12°, to an on or off state. In the on state, light from the projector bulb is reflected into the lens making the pixel appear bright on the screen. In the off state, the light is directed elsewhere (usually onto a heatsink), making the pixel appear dark.To produce greyscales, the mirror is toggled on and off very quickly, and the ratio of on time to off time determines the shade produced (binary pulse-width modulation). Contemporary DMD chips can produce up to 1024 shades of gray (10 bits). See Digital Light Processing for discussion of how color images are produced in DMD-based systems.The mirrors themselves are made out of aluminum and are around 16 micrometres across. Each one is mounted on a yoke which in turn is connected to two support posts by compliant torsion hinges. In this type of hinge, the axle is fixed at both ends and literally twists in the middle. Because of the small scale, hinge fatigue is not a problem and tests have shown that even 1 trillion (1012) operations do not cause noticeable damage. Tests have also shown that the hinges cannot be damaged by normal shock and vibration, since it is absorbed by the DMD superstructure.Two pairs of electrodes control the position of the mirror by electrostatic attraction. Each pair has one electrode on each side of the hinge, with one of the pairs positioned to act on the yoke and the other acting directly on the mirror. The majority of the time, equal bias charges are applied to both sides simultaneously. Instead of flipping to a central position as one might expect, this actually holds the mirror in its current position. This is because attraction force on the side the mirror is already tilted towards is greater, since that side is closer to the electrodes.To move the mirrors, the required state is first loaded into an SRAM cell located beneath each pixel, which is also connected to the electrodes. Once all the SRAM cells have been loaded, the bias voltage is removed, allowing the charges from the SRAM cell to prevail, moving the mirror. When the bias is restored, the mirror is once again held in position, and the next required movement can be loaded into the memory cell.The bias system is used because it reduces the voltage levels required to address the pixels such that they can be driven directly from the SRAM cell, and also because the bias voltage can be removed at the same time for the whole chip, so every mirror moves at the same instant. The advantages of the latter are more accurate timing and a more cinematic moving image.".
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- Digital_micromirror_device wikiPageExternalLink displays_DLP_technology2.html.
- Digital_micromirror_device wikiPageExternalLink dlp_technology_white_papers.asp.
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- Digital_micromirror_device wikiPageID "21979868".
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- Digital_micromirror_device wikiPageOutDegree "35".
- Digital_micromirror_device wikiPageRevisionID "683739946".
- Digital_micromirror_device wikiPageWikiLink 1000000000000_(number).
- Digital_micromirror_device wikiPageWikiLink Aluminium.
- Digital_micromirror_device wikiPageWikiLink Aluminum.
- Digital_micromirror_device wikiPageWikiLink Array_data_structure.
- Digital_micromirror_device wikiPageWikiLink Category:American_inventions.
- Digital_micromirror_device wikiPageWikiLink Category:Microtechnology.
- Digital_micromirror_device wikiPageWikiLink Category:Optoelectronics.
- Digital_micromirror_device wikiPageWikiLink Category:Semiconductor_devices.
- Digital_micromirror_device wikiPageWikiLink Category:Transducers.
- Digital_micromirror_device wikiPageWikiLink DLP_projector.
- Digital_micromirror_device wikiPageWikiLink Digital_Light_Processing.
- Digital_micromirror_device wikiPageWikiLink Digital_cinema.
- Digital_micromirror_device wikiPageWikiLink Electrostatic.
- Digital_micromirror_device wikiPageWikiLink Electrostatics.
- Digital_micromirror_device wikiPageWikiLink Fatigue_(material).
- Digital_micromirror_device wikiPageWikiLink Film.
- Digital_micromirror_device wikiPageWikiLink Grayscale.
- Digital_micromirror_device wikiPageWikiLink Greyscale.
- Digital_micromirror_device wikiPageWikiLink Head-mounted_display.
- Digital_micromirror_device wikiPageWikiLink Head-mounted_displays.
- Digital_micromirror_device wikiPageWikiLink Heat_sink.
- Digital_micromirror_device wikiPageWikiLink Heatsink.
- Digital_micromirror_device wikiPageWikiLink High-definition_television.
- Digital_micromirror_device wikiPageWikiLink Holographic_Versatile_Disc.
- Digital_micromirror_device wikiPageWikiLink Invent.
- Digital_micromirror_device wikiPageWikiLink Invention.
- Digital_micromirror_device wikiPageWikiLink Larry_Hornbeck.
- Digital_micromirror_device wikiPageWikiLink MOEMS.
- Digital_micromirror_device wikiPageWikiLink Metrology.
- Digital_micromirror_device wikiPageWikiLink Micro-Opto-Electro-Mechanical_Systems.
- Digital_micromirror_device wikiPageWikiLink Mirror.
- Digital_micromirror_device wikiPageWikiLink Optical.
- Digital_micromirror_device wikiPageWikiLink Optics.
- Digital_micromirror_device wikiPageWikiLink Orders_of_magnitude_(numbers).
- Digital_micromirror_device wikiPageWikiLink Pixel.
- Digital_micromirror_device wikiPageWikiLink Pulse-width_modulation.
- Digital_micromirror_device wikiPageWikiLink Rectangle.
- Digital_micromirror_device wikiPageWikiLink Rectangular.
- Digital_micromirror_device wikiPageWikiLink Semiconductor.
- Digital_micromirror_device wikiPageWikiLink Static_RAM.
- Digital_micromirror_device wikiPageWikiLink Static_random-access_memory.
- Digital_micromirror_device wikiPageWikiLink Television.
- Digital_micromirror_device wikiPageWikiLink Texas_Instruments.
- Digital_micromirror_device wikiPageWikiLink Torsion_spring.
- Digital_micromirror_device wikiPageWikiLink File:DLP_CINEMA._A_Texas_Instruments_Technology_-_Photo_Philippe_Binant.jpg.
- Digital_micromirror_device wikiPageWikiLink File:Digital_micromirror2.svg.
- Digital_micromirror_device wikiPageWikiLinkText "DMD".
- Digital_micromirror_device wikiPageWikiLinkText "DMDs".
- Digital_micromirror_device wikiPageWikiLinkText "Digital Micromirror Device".
- Digital_micromirror_device wikiPageWikiLinkText "Digital micromirror device".
- Digital_micromirror_device wikiPageWikiLinkText "digital micromirror device".
- Digital_micromirror_device wikiPageWikiLinkText "digital micromirror devices or DMD".
- Digital_micromirror_device hasPhotoCollection Digital_micromirror_device.
- Digital_micromirror_device wikiPageUsesTemplate Template:Multiple_issues.
- Digital_micromirror_device subject Category:American_inventions.
- Digital_micromirror_device subject Category:Microtechnology.
- Digital_micromirror_device subject Category:Optoelectronics.
- Digital_micromirror_device subject Category:Semiconductor_devices.
- Digital_micromirror_device subject Category:Transducers.
- Digital_micromirror_device hypernym Semiconductor.
- Digital_micromirror_device type Article.
- Digital_micromirror_device type ChemicalCompound.
- Digital_micromirror_device type Article.
- Digital_micromirror_device type Component.
- Digital_micromirror_device type Semiconductor.
- Digital_micromirror_device type Transducer.
- Digital_micromirror_device comment "The digital micromirror device, or DMD, is an optical semiconductor (see MOEMS) that is the core of the trademarked DLP projection technology from Texas Instruments (TI). The DMD was invented by solid state physicist and TI Fellow Emeritus Dr. Larry Hornbeck in 1987.The DMD project began as the Deformable Mirror Device in 1977 using micromechanical analog light modulators.".
- Digital_micromirror_device label "Digital micromirror device".
- Digital_micromirror_device sameAs Dispositiu_digital_de_micromirall.
- Digital_micromirror_device sameAs Mikrospiegelaktor.
- Digital_micromirror_device sameAs Dispositivo_digital_de_microespejos.
- Digital_micromirror_device sameAs Matrice_de_micro-miroirs.
- Digital_micromirror_device sameAs Digital_Micromirror_Device.
- Digital_micromirror_device sameAs デジタルミラーデバイス.
- Digital_micromirror_device sameAs m.028s1.
- Digital_micromirror_device sameAs Q1369469.
- Digital_micromirror_device sameAs Q1369469.
- Digital_micromirror_device wasDerivedFrom Digital_micromirror_device?oldid=683739946.
- Digital_micromirror_device depiction DLP_CINEMA._A_Texas_Instruments_Technology_-_Photo_Philippe_Binant.jpg.
- Digital_micromirror_device isPrimaryTopicOf Digital_micromirror_device.