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Rocket Fuel Speeds Transistors

Mick Ohrberg writes "The rocket fuel hydrazine has been proven to increase the speed of thin-film transistors, which are used in LCD displays. It's also much cheaper to produce these transistors in a new "wet" manufacturing technique, based on creating the thin layers by using the centrifugal force caused by spinning the substrate. The result? Well, if the manufacturing cost plummets, maybe that 42" LCD monitor for my PC will be within (financial) reach soon."

8 of 46 comments (clear)

  1. Re:Good news - refresh rates by cruff · · Score: 4, Informative

    Refresh rates are related to how fast the actual liquid crystal material can reorient itself in response to the applied voltage. So, unfortunately, unless they also use a new type of liquid crystal, the answer is probably not.

  2. Hydrazine: Bad Stuff by whorfin · · Score: 4, Informative

    From the EPA and CDC. Perhaps Outsourcing LCD production is a good thing, after all?

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  3. Re:OLED influenced as well? by TheClam · · Score: 5, Informative

    Hydrazine doesn't play nicely with organics, and there's no tin sulphide in an OLED, so no.

  4. Re:So... by flewp · · Score: 2, Informative

    CRT won't die until the price of LCD's go down (which this could help) and maybe more importantly, when the quality of LCD's (color depth/range, "refresh rates" etc) matches CRTs.

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  5. More uses by Lars+T. · · Score: 3, Informative

    This article (in German) says that you can make cheap, flexible electronics with this stuff.

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  6. Re:Hydrazine? Tin Disulfide? by Patrik_AKA_RedX · · Score: 4, Informative

    The hydrazine is only used while fabricating the LCD, it doesn't stay in it.
    It's used as a solvent to put a layer of TnS2 on the substrate.

  7. Re:OLED influenced as well? by Komi · · Score: 4, Informative
    Acording to this other article it seems like TFT benefitted from OLED techniques, rather than the reverse. OLED semiconductors are popular they can be disolved into a liquid. In that form, it's very easy and cheap to build the circuit. It's much more expensive to work with TFT semiconductors. Well now they've figured out how to disolve TFT semiconductors into a liquid. TFT semiconductors have much better electrical properties. So you get the performance of TFT at the cost of OLED.

    I'm no expert on this, so go read online for more info.

    Komi

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  8. I disagree. by quinkin · · Score: 2, Informative
    I disagree.

    Refresh rate, pixel decay rates, attainable colour space, non-native resolution pixel interpolation, RGB vs BGR for sub-pixel antialiasing, mean time to failure and fade, (semi) standard interfaces, etc...

    As far as I am concerned, with no ego/space/power consumption restrictions, a CRT is far and away superior for most applications.

    Re: the text performance on LCD, I assume you are using subpixel interpolation to get a usable display? Or are you just referring to DOS style low res character screens?

    If subpixel, shame it is a work around to try and achieve much of the same readability of a CRT. It's even more of a shame that the technique will not work on portrait orientation LCD screens (think PDA) unless they have been manufactured specifically for this purpose (I expect they will soon). Then there is the RGB/BGR problem requiring user intervention and/or confusion.

    You should NEVER have visible flicker on a decent CRT (unless you are comparing your new 2003 LCD to your old 14" running @60Hz). As for "sharper pixels" you are technically correct - unfortunately sharper rectangular pixels does not a smooth diagonal line make...

    I use LCD's and CRT's extensively at work and always prefer the CRT.

    Q.

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