Latest iPad undergoes backlight revisions; will reduce heat output, sources say

“Apple is making revisions to the New iPad’s backlight module by using a one LED structure as used in Apple’s second-generation iPad instead of a two LED one that the current version has, according to industry sources,” Max Wang and Alex Wolfgram report for DigiTimes.

“The extra LED is reportedly adding to [heat output] and that using one LED will help solve [heat output] issues since more backlights along with more power to heat those backlights is causing [heat output],” Wang and Wolfgram report. “As a result, the battery and backlighting revisions will cause the latest iPad to be similar in weight and thickness as Apple’s second-generation iPad, added sources.”

Wang and Wolfgram report, “The upgraded iPad is also said to feature indium gallium zinc oxide (IGZO) panel technology to allow the device to feature an even thinner design and longer battery life.”

Read more in the full article here.


      1. Your issue isn’t the battery it’s the cable and charger you are using to charge it. First-Gen iPhone cables and the smaller but first gen iPad cables and adapter do not properly charge the new iPad and will actually deplete the battery while in use…as well as using the incorrect cable while connected to a computer

    1. No heat problems here with my six week old iPad with Retina display, even after extended play of fairly heavy duty games, e.g. Real Racing 2 HD. The “issue” was absolutely bogus.

  1. What I am waiting for is the next version of the MacBook Pro with Retina Display. There are always “refinements”. The first Macbook Air was a “wonder” but the next generation really delivered on the promise. I suspect the same is true of both the “new” iPad and the “new” Macbook PRO. This latest batch was amazing but the next batch will just be too much to resist.

  2. DigiTimes has it backwards.

    Getting rid of additional LED module is only possible if and when Apple will be able to use IGZO matrices which are far more translucent and hence require no more backlight than low resolution IPS.

  3. ““The extra LED is reportedly adding to [heat output] and that using one LED will help solve [heat output] issues since more backlights along with more power to heat those backlights is causing [heat output],” Wang and Wolfgram report.”

    Are we sure that statement wasn’t from Cheech and Chong?

  4. This sounds fishy. The advantage on LEDs versus incandescent light bulbs is that the amount of energy lost to heat is a lot smaller. I have trouble believing that the drop in heat from removing one LED will be noticeable. There would be a lot more savings to be made from more efficient video chips and CPUs.

    1. Incandescent bulbs use a lot more power than LEDs for an equivalent output. And you can use a 60W incandescent to back little cakes in an Easy Bake oven. Fluorescents are closer in efficiency to LEDs, but I do not like compact fluorescents for several reasons – slow startup, color temperature, flicker, sensitivity to cold, mercury content, etc.

      If you buy an LED bulb replacement for a sixty watt incandescent bulb. It will likely consume around 7 watts (~60 lumens per watt). Turn it on and then touch the heat sink after ten or fifteen minutes. It will be hot. LEDs do produce quite a bit of waste heat.

      Cutting edge LEDs provide up to 130 lumens per watt, maybe even more (I have not recently checked up on advances in LED technologies). But I don’t believe that they are being used in residential lighting products, yet. When the higher efficiency LEDs make it into iPads and residential lighting, the amount of thermal waste will decrease.

      The LEDs in the iPad are lower power than my 60W-equivalent LED bulb, but they are contained within a very compact device. That said, I have never experienced a heat problem with my new iPad, which I pre-ordered and have been using since day one.

  5. so close to the annual refresh cycle? If it does happen, the only reason I can think of to make the change so close to the refresh is because they feel the new ipad mini would take too many customers away from their premium 9.7 ipad. Keeping it light and keeping it premium.

  6. I have no heating issues with my ipad 3 retina, and i watch movies on it. Plus the battery life is just as good, if not better then my ipad 1, which is now sold.

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