Tag Archive | "screen"

LG / Intel Phone to use Mirasol reflective display tech. Update:Incorrect.

Update. This article is incorrect.

As CPU and chipset power consumption becomes less and less in phone and MID designs, the power drains of the displays, radio, peripherals and storage technology become more and more significant. One of the biggest issues, display backlighting, has been something that many people have been working on for a long time. In current high-brightness UMPCs and MIDs the screens can take up to 50% of the total power of the devices, which is exactly the scenario you’re in when you’re mobile.

LG will be tackling this issue on their Moorestown phone in 2010 by using a reflective, bi-stable technology from Mirasol Displays, a subsiduary of Qualcomm. It’s complex and vastly different from current backlit screen technologies but I can summarise by saying that it takes a lot less power, provides much more effective outdoor brightness and, due to it’s transflective nature, is easier on the eye. The method used is known as Interferometric MODulation (IMOD.)

Mirasol IMOD Structure

There are some white papers and overviews on the Mirasol website which I have been through to try and get a feel for the power savings and although there aren’t any real figures given (obviously it depends on the size of the display) my gut feeling here is that in 3-5″ devices in bright room conditions, it could save 0.5 – 1W which will be extremely significant in the LG device which may only have a 2-3W profile.  If you want to get a feel for the technology, take a look at this PDF which alludes to newspaper reading quality in terms of contrast and reflectivity. There’s also a very good video presentation here which the problems of traditional backlit displays and the ‘on-time’ that I’ve been highlighting recently.

It appears that current Mirasol products are currently quite small in size and obviously the technology is going to be more expensive so we might see this used as a secondary or external display (as in the two screen Nokia E90 design) but with 12-18 months to go before the product needs to be ready, Mirasol may be able to get a full 800×480 screen out.


Mirasol website.

Foldable OLED concept could mean big screens in little pockets

Here is a pretty cool video of what appears to be a working screen that is playing back video while the bezel that encapsulates is folds in half. This is just a concept from Samsung right now and probably has lots of technical limitations; it is probably still many years away. If technology like this can be squeezed into pocket sized devices, it could mean some pretty amazing displays on MIDs that don’t have any issue with folding up and going with you in your pocket during your day to day travels.


6% of you appear to have UMPCs. Really?

According to my stats, 5.77% of vists to the UMPCPortal are from people with screen sizes of 1024×600, 800×480 or 800×600. Those screen sizes are almost exclusive to the ultra mobile PC (MID, pro-mobile, netbook) class of devices so its got be close to a 1:1 relationship.

I wonder if that same 5.77% statistic will appear if I put a poll here.


Look at the growth of the 1024×600 screens. Its not just cross-sector growth either. The 800×480 graph isn’t going anywhere!

1024600 800x480

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