Ignis' 55" OLED TV samples arrive, company says their technology enables lifetime and efficiency boost

Last month Ignis Innovation announced that they began producing some 55" OLED TV evaluation samples for display makers to test their MaxLife compensation technology. The company now tells us that the first sample panel arrived at their offices, and they will start fulfilling orders (to display makers and OEMs) in about two weeks.

The company did some initial measurements, and they say that this panel offers the world's lowest power consumption (20% lower than LG and Samsung's current OLED TVs), longest lifetime (a significant boost over existing OLED panels). The panels are highly uniform (much better than the OLED TVs no the market).

Apple new patent describes placing photo-diodes between OLED pixels for ambient light and lifetime compensation

The US PTO published a new patent from Apple (filed in 2012) that describes how to use sensors to compensate for ambient lighting (see DisplayMate's related recent article) and lifetime brightness degradation in OLED displays. The patent describes that photo-diodes can be placed inside the OLED array or above and below it.

Putting photo-diodes inside the display will enable them to more accurately measure light levels. So if a part of the screen is dimmer than the rest of the screen (for example because only a part of the display is under direct light) - the photodiode will detect it and then the display brightness in that area can be increased. This is something that cannot be achieved with a single sensor. Those photodiodes can also be used to learn whether certain OLED pixels (or pixel groups) have lowered brightness due to aging. Then the display can compensate and drive these pixels higher.

Ignis demonstrates their MaxLife external compensation technology

Back in June 2012 I reported from SID on Ignis' Max Life technology. Max Life provides external compensation - that deals with OLED burn-in. The idea is to keep track of how much each pixel was used, and so it's possible to calculate the brightness loss in that particular pixel, and then drive this particular pixel correctly - to compensate. Ignis now released a nice video showing a 20" AMOLED panel (their own a-Si prototypes made by RiTDisplay) with a burn-in logo. When Max Life is turned on, the logo disappears:

Ignis explains that while Max Life theoretically makes the "eventual" lifetime (until the display burns out completely) worse, in practice it helps to make the device usable longer. Ignis says that the main problem is non-uniformity in brightness and not actual brightness.

Ignis Innovation at SID 2012

As I already said before, Ignis Innovation's SID booth was one of the conference highlights for me. Their technology is very impressive and hopefully will enable cheaper non-LTPS AMOLED production.

In their booth, Ignis were showing 3.5" and 20" AMOLED panels that use the company's a-Si backplane compensation technology. The panels were made by RiTdisplay. Ignis and RiTdisplay have been showing these displays back in 2011. Originally they were supposed to be released towards the end of 2011, but this never happened. During SID Ignis announced that now the plan is to release these by the end of 2012. According to Ignis the 3.5" AMOLED will be cheaper than the LTPS-based competition (i.e. Samsung made panels). You can read more about these panels and RiTdisplay's plans at my RiTdisplay-at-SID-2012 post.

IGNIS shows a 3.5" AMOLED made on a-Si with AdMo compensation technology

Update: we learned that RiTDisplay have started to mass produce those AMOLEDs and have already found some smartphone clients.

IGNIS Innovation, unveiled a new 3.47" 320x480 AMOLED made on an amorphous silicon backplane (a-Si). The new display uses INGIS' new AdMo compensation technology and is made by RiTdisplay.

Today all AMOLEDs are made on LTPS backplanes. Ignis' solution uses a-Si which is cheaper but has stability issues. Ignis says that their new AdMo technology eliminates those issues - and makes the a-Si made AMOLED equivalent in performance to LTPS AMOLEDs. Ignis says that "This opens the door for RiTdisplay and other manufacturers to make state-of-the-art AMOLED displays using existing amorphous silicon equipment" - but they haven't announced when and if RiTDisplay (or other companies) plan to start using the technology.

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