Sleepiness due to LED backlight screen

I have been using my iPhone 4 for e few months after replacing my old iPhone 3G, and slowly realized that I almost always felt asleep after being exposed to this phone's, my laptop's and desktop's screen only in about several minutes. After googling around, I came across a recently published medical research result in a physiology journal, which mentioned the evening exposure effect of the LED backlight screen's blue-range short wavelength, http://jap.physiology.org/content/early/2011/03/10/japplphysiol.00165.2011.abstr act
Seeing that I have not heard anyone else has the same problem, I am not completely sure about the correlation, moreover I have a personal specific problem with my melatonin production myself before this problem occured. However, if this is true, and is the real cause of my sleepiness, has anyone have any opinion, suggestion, or tips to solve this, before someone comes out with a new technology that has no such drawback?
Thank you for anyone's kind attention.
Iman

Is there a technical question here regarding your iPhone? It is what it is. Maybe you should try something other than a smartphone.

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Jane
2015 X1 Carbon, ThinkPad Slate, T410s, X301, X200 Tablet, T60p, HP TouchPad, iPad Air 2, iPhone 5S, IdeaTab A2107A, Yoga Tablet, Yoga 3 Pro
I am not a Lenovo Employee.
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!

Led backlighting

I just came across an online review that provided three screenshots of a T400 LED backlit display next to a CCFL lenovo display. I was ready to dismiss the 'hype' until I saw this.
http://www.notebookreview.com/default.asp?newsID=4569&review=Lenovo+ThinkPad+T400+2767+%2D+Core+2+Du...
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Message Edited by bjamesw on 12-29-2008 04:11 PM

bjamesw wrote:
I'm astonished. Has all of this been covered already in posts I haven't found? This would seem to be a pretty important topic to anyone interested in thinkpads and it's generated utter silence?
It's the holiday season - forum traffic is down all over, not just here.
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Jane
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I am not a Lenovo Employee.
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Hi @Sarteret
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