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Re: question on LED-backlit displays
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Re: question on LED-backlit displays


  • Subject: Re: question on LED-backlit displays
  • From: Robin Myers <email@hidden>
  • Date: Sun, 17 Jun 2007 18:53:08 -0700


On Jun 17, 2007, at 18:44 , Roger Breton wrote:

A "white" LED typically has
a broadband response from the phosphor with a peak in the blue,
making a wide gamut display a challenge.

Graeme Gill.

Please excuse my ignorance, Graeme, but I thought only CRTs used phosphors.


Roger Breton

Perhaps you missed the message earlier today where I posted:

Most high-brightness LEDs used for backlighting are "white" LEDs. The actual LED chip is a blue LED coated with a blue light excited yellow emitting phosphor. The phosphor allows some of the blue light to pass through so the result is blue plus yellow light, thus "white".

Robin Myers

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