World Library  
Flag as Inappropriate
Email this Article

Telescopic pixel display


Telescopic pixel display

Telescopic pixel display (TDP) is a new display technology among a Liquid Crystal Display (LCD) and a Digital Micromirror Device (DMD) (based on DLP projector), that it allows to have the merits of both for a new type of monitor.


  • Operation principle 1
  • Advantages 2
  • Disadvantages 3
  • References 4

Operation principle

The telescopic pixel design is based on the optical telescope. 'Telescopic' indicates that each pixel acts as a miniature telescope consisting of a primary and secondary mirror that can both be deformed by application of specific voltage.

When the pixel is turned off, the primary and secondary mirrors are parallel, therefore both block the passage of light, reflecting it back to the backlight, so that the pixel appears dark. When the pixel is on, the primary mirror deforms into a parabolic shape that focuses light onto the secondary mirror. After reflecting from the secondary mirror, light propagates through the hole in the membrane and the pixel appears bright.


Performance tests on arrays of telescopic pixels suggest they hold substantial promise for future displays. Backlight transmission was measured at 36 percent, and simulations indicated that this could reach 56 percent with design improvements. In a modern laptop with a five-hour battery life, this increase in efficiency could lead to almost 45 extra minutes of battery time without reducing screen brightness. Pixel response time was 0.625 ms—fast compared to LCDs, which have 2 to 10 ms response times. These response times may also be fast enough to allow sequential color processing where colors are displayed as rapid pulses of red, blue, and green from each pixel, streamlining fabrication and device design. Also, the intensity of each pixel can be smoothly varied from zero to one hundred percent for more realistic gray scales and color shades. Other advantages of the telescopic pixel are high transmission efficiency, potentially low cost, as well as relative ease of fabrication and control.


The only drawback of TPD would be the contrast-ratio. Experimental measurements conducted with non-collimated organic light-emitting diode have much higher contrast-ratios, so a lot needs to be done to compete with these technologies.


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.