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The future of displays?

Discussion in 'Electronic Design' started by [email protected], Sep 20, 2005.

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  1. Guest

    I remember years ago when colour LCD displays were just equations being
    worked on. I'm wondering what I can expect in the next 15-20 years.
    Will it be more of the same, but bigger, lighter, and flexible? LCD
    monitors seem good enough, now, for just using a computer. LCD
    projectors seem good, but need bulb replacement so how about LEDs
    instead?

    I am more thinking about displaying extra information other than
    intensity, like holographic displays (colour or monochrome) and
    possibly reflectivity so you can get good metallic colours. This would
    go down well, I believe for shopping channels.

    Capturing information to display a hologram is another issue.
     
  2. Guest

    Sorry, in some places in the above post I used LCD, when the technology
    should not be restricted to LCD, but include any display technology.
     
  3. I read in sci.electronics.design that wrote (in
    Bioluminescent panels. Either self-photosynthetic or you feed them
    glucose once a week.
     
  4. Direct visual cortex projection.

    It will give a whole new meaning to the term "dead pixels".
     
  5. Guest

    The display of the future will be electrophoretic - it has been for
    some thirty years now.

    In principle, using electrically charged black and white particles
    suspended in a fluid is a great way to make "digital paper", with the
    same sort of reflective contrast as you get from the printed page, and
    since the particles tend to stick around when the writing field is off,
    power consumption is pretty low.

    I suppose someone will get the bugs out eventually, as they finally did
    with ink jet printers ......
     
  6. The advance of technology (both direction and speed) is rarely
    predictable. Futurists are almost always wrong.
    Note however that the primary factor in determining whether something
    happens or not is usually economics; and (for comercial products) that
    usually depends much more on manufacturing technology than on the
    technology of the end product.

    Paul Cardinale
     
  7. If Microsoft is still around, it will have to support the nice blue
    screen they have now.
     
  8. Guest

    Thanks for the replies. I was thinking about lamps for video
    projectors, and the reason why I haven't bought one yet is because
    every so often you need to spend like half the cost on a new lamp. I
    would buy one with a better light source (high power LED) which lasted
    e.g. 50000 hours instead of 2000-3000 hours. Also you might not need a
    fan, since they tend to run cooler so 0db sound emission? The size
    might be bigger because you might need direct the light from an array
    using a light pipe, but then I'm sure optical engineers are quite
    capable. Size is not an issue for me.

    (Sorry I haven't done the calculation to see how many high power LEDS,
    you need to have same power output as a 150 W lamp, but it is safer to
    be stupid than wrong IMHO.)
     

  9. Blue? Mine goes bright red. I felt that it was more appropriate.
    ;-)
     
  10. Guest

    You might not get enough of a spread of wavelengths from white LEDs to
    be able to reproduce colours well; I'll do a little internet searching.
     
  11. Ban

    Ban Guest

    LEDs are unsuitable for powering video projectors for several reasons:
    1) - The efficiency is only about that of halogen lamps(<27%), a much better
    choice would be HID with 2-3 times the light output for the same electrical
    input power. The same need for a fan.
    2) - The required power would dictate the use of at least 30 5W Luxeon LEDs
    with a lifetime of only 1000h, costing at least 1500$.
    3) - The spectral distribution is not even, so special flourescents and/or
    filters are needed with lower efficiency.
    4) - The power supply is not suitable for LEDs and additional components are
    needed.
    5) - The emitting area is much bigger and therefore difficult to focus.
    Well, if they were suitable for the application don't you think somebody
    else would have already had the idea? BTW I wouldn't like to be declared
    stupid either.
     
  12. There are digital projectors that use xenon lamps.
     
  13. The display has my most of my interest is the new ones with micro electron guns,
    these replace the old heater and electron gun in the CRT.

    Lookahere:
    http://softwareforhomes.com/HDTV-Home-Theatre-CES-2005.htm
    <quote>

    News from Toshiba: Toshiba said it will soon introduce the first flat-panel
    displays utilizing the SED (Super conduction Electron emitter Display)
    technology it has co-developed with Canon. The first SED televisions will be
    expensive, but as yields improve and production increases, prices will be
    reduced. Yoshihide Fujimoto, CEO of Toshibas Digital Media Networking
    Company, stated: Theoretically, prices for SED can be much lower than
    plasma.

    Ramirez further stated that SED is going to be the new standard in flat
    panel; its going to change the way you look at flat panel. The
    specifications are impressive: 1080p (1920 x 1080) resolution, extremely
    high 8600:1 contrast ratio and 1 msec response time.

    The SED is a new type of flat-panel display technology, that was created
    through the merging of Canon's proprietary electron emission and
    micro-fabrication technologies with Toshiba's CRT technology and
    mass-production technologies for liquid crystal displays and semiconductors.
    Like conventional CRT televisions, the SED utilizes the phenomena of
    electron collision with a phosphor coated screen to emit light. The main
    difference is that the electron emitters, which correspond to an electron
    gun in a CRT television, are distributed in an amount equal to the number of
    pixels on the display. In addition to high brightness and high definition,
    the SED delivers exceptional overall image quality, fast video-response
    performance, high contrast, high gradation levels and low power consumption.
    </quote>

    And directly from Canon:
    http://www.canon.com/technology/display/index.html

    But then again I am a 'CRT freak' :)
     
  14. I read in sci.electronics.design that Jan Panteltje
    You have a bald, rectangular conical head, a very thin neck, and a navel
    on one cheek?
     
  15. You are jealous.
     
  16. Of what? His persistence, brawn and ability to focus? His three shiny
    guns? Or just his ability to operate in a vacuum?


    Best regards,
    Spehro Pefhany
     
  17. I read in sci.electronics.design that Spehro Pefhany
    I thought that a reference to the vacuum between his ears might be too
    unkind. (;-)
     
  18. Autymn D. C.

    Autymn D. C. Guest

    fluorescent
     
  19. Autymn D. C.

    Autymn D. C. Guest

    Look up "fotonic crustals" under the wrong conventional spelling. One
    promising crustal is a Planck's-law violator made of tungsten. *sniff*

    -Aut
    Down with the Laws.
     
  20. Get lost ego tripper, you bring in nothing in this discussion on displays.
    PLONK
     
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