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Thread: Why aren't there certain colors?

  1. #1

    Default Why aren't there certain colors?

    Can anyone explain why we have some non-primary LED colors like green, cyan, red-orange, etc, but no purple or pink? Do the LED gods think that those colors are too wimpy/girly to be LEDs or something?

  2. #2
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    I'm not sure but I believe it's why the same colors pop out out of a rainbow. There are just certain fundamental frequencies that pop out. Theoretically you could make an LED that would do all sorts of colors but when they must do it in an itsy-bitsy size certain colors pop out well.

    Like all the blue shades we have. The native state of LEDs is a blue so it doesn't take much to pop a blue shade out. I believe the reason purple is difficult is because it wants to pop out in the UV spectrum. I know you can get 5mm purple's but they're powerfully weak.

    I guess that's how it makes sense me. I'm not sure if I'm hitting the mark either.[?]

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    Sith Lord Do-Clo's Avatar
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    Another determining factor in the color of leds is the market demand. The colors we currently have are commonly used in many other aplications. It is hard to accept but we are not the only ones using leds and we only make up a small precentage of the market. So demand leads the direction of design and production.

    Do-Clo
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    Jedi Initiate virus692's Avatar
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    here is a keen video I found on luxeon leds and how what colurs are made:
    http://www.luxeon.com/technology/ll_video.cfm

    VIrus 692-
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  5. #5

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    Sweet vid... Felt like high school though...

  6. #6
    Sith Lord Do-Clo's Avatar
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    Good information but it reminds me of an army training film. I know that they make product films for technical people but they must think we are really boring people.

    Do-Clo
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  7. #7

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    Is that guy the voice of every training and sales film in the world?

    It was really cool though. []

    "Only a Sith deals in absolutes. I will do what I must." - Obi-Wan Kenobi

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    What I get out of it is, "So are you telling me before they cut it there's a super-sized LED?[:0] Why do I not have one...now?"[]

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  9. #9
    Sith Lord Do-Clo's Avatar
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    All semicondutors such as diodes transistors ic chips and such are made on a large silcon wafer which has segments containing the individual parts. Then once the wafer passes inspection it is cut into the indivdual parts and then installed into the housings that we recognize. I once worked for a company in their microwave division (communications not cooking) and we used the parts straight from the silcon wafers after they had been cut. The tiny chips of silcon where connected into the circuit using gold wire about the size of a human hair. I used to spend most of the day looking through a microscope to work in the devices.

    Do-Clo
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  10. #10
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    Bubble burster.[]

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