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OLED (or AMOLED) screens are efficient, clean, thin and bright, and are becoming popular in mobile devices. We bring you daily news and resources on this exciting new technology!
Recent OLED news:
LG Chem published two nice (and short) videos showcasing their OLED Lighting panels. The first video introduces their 100x100 mm and 50x20 mm panels (with 45 or 60 lm/w). It shows several lumiaries from WAC Lighting, Acuity Brands and others:
The second video shows LG Chem's booth at EuroLuce 2013. Here you can see two LG Chem designed lamps that use their upcoming flexible OLED lighting panels (50x200 mm):
Panasonic Corporation developed a white OLED lighting panel that is the world's highest luminous efficiency - 114 lm/W for a light-emitting area of 1 cm2. Panasonic also developed a larger panel (25 cm2) with 110 lm/W. The panels also feature long lifetime - over 100,000 hours (LT50) and a brightness of of 1,000 cd/m2. The panel thickness was less than 2 mm.
To achieve this high efficiency, Panasonic focused on an all-phosphorescent design (with an optimal stacked layer design) and new light extraction technology. Panasonic used a Built-up Light Extraction Substrate (BLES) by optimizing the arrangement of the film, glass and air to suppress light confinement in the OLED. This enable them to achieve about 2.5 times improvement in the light extraction efficiency, which is about 50% in the new panels. Panasonic says that in older technology the light extraction efficiency stayed below 40%. Panasonic says they hold 30 patents in Japan and 17 overseas - all related for this new development.
Philips just sent us a note saying that they installed a LivingScrulpture 3D OLED system in their Summerset (New Jersey) office's lunch area. The LivingScrulpture 3D is a kinetic system based on modular OLED blocks.
The system in Summerset uses 36 base modules for a total of 576 OLED panels. Each OLED panel is 76x76 mm in size (active area 61.4x60.5 mm) and the color temperature is 3,000K. When Philips launched the LivingScrulpture 3D they said that each module costs €700. If the price is still true, than the luminaire in Summerset costs over €25,000.
Two days ago we reported on rumors that Google's next gen Google Glass HMD (or "wearable computer") will use OLED microdisplays made by Samsung Display. I wrote that as far as I know SDC never developed OLED microdisplays, but apparently I was wrong.
One of my sources sent me a conference paper from 2011 describing a 0.6" XGA OLED microdisplay - made by Samsung Mobile Display. The OLED-on-silicon device (Samsung calls them OLEDoS) used white OLEDs with color filters (all OLED displays made today use this architecture, although makers are moving towards direct emission). I don't think Samsung ever produced such displays, but apparently they did make some successful prototypes.
Samsung Display Corporation (SDC) established a new company to handle patent trading and development in the US. The new company is called Intellectual Keystone Technology (IKT) and it was established in Delaware in March 2013.
Reportedly Samsung invested $25 million in the new company. On April 30 IKT bought several patents from Seiko Epson. According to reports, these are LCD and OLED related patents.
Last week Samsung reported that they will soon reach 10 million Galaxy S4 sales, and yesterday (May 23) they announced that indeed they surpassed that number. It took samsung less than a month to do so. The company hopes to sell over 100 million GS4 units - or double the GS3 sales. The GS4 is currently available in more than 110 countries and will be rolled out to a total of 155 countries soon.
The GS4 features a 4.99" Full-HD (1920x1280, 441 PPI) Super AMOLED display, an Octacore 1.6Ghz Exynos CPU (some models use a Quadcore 1.9Ghaz Qualcomm CPU), 2GB of memory, 13 mp camera and a 2,600mAh battery - all this while being a smaller and lighter than the GS3. The GS4 includes a lot of new software features and special UI controls, include the Adapt Display which allows extensive display calibration adjustments.
Back in May 2012, 3M teamed up with Nanosys to commercialize QDEF Quantum Dot films for LCD displays. Today 3M announced that it is in the "final stages of scale-up" for these QDEF films. They plan to offer these to LCD makers that can be use them to make phones, tablets and TVs lighter, brighter, more energy efficient and with a larger color gamut.
In January 2013 Sony unveiled some new LED-backlit LCD TVs under the Triluminos brand, which use QDvision's quantum dot films. This TVs (and smaller sized LCDs in one of Sony's digital cameras) are already shipping.