All posts tagged Samsung

PenTile Displays Now in Space

According to a post by IKing201 and an article by Eric Zeman of InformationWeek, from amongst the many things being carried into space for the last space shuttle flight, there were three Samsung Nexus One smartphones.

These smartphones will be added to the SPHERES (Synchronized Position Hold, Engage, Reorient, Experimental Satellites), which the astronauts aboard the ISS use daily to perform a wide number of tasks.  As you may recall, Nexus One smartphones use using Samsung’s PenTile OLED technology, so it would seem that now PenTile technology has made it into space.

PenTile for Digital Still Cameras (DSC)

There was a very thorough review of the Samsung NX10 camera on dpreview which uses a 3.0-inch VGA PenTile RGBG OLED display.  This review covers every aspect of this camera including the display.

I would like to only make a couple of minor corrections to this reviewer’s comments.

1.  PenTile technology was not used for this camera display to save power.  OLED can be intrinsically low power if the user interface is design to be predominantly black with white or bright text or graphics.  OLEDs do not consume power where they are not being lit up.  Unlike smartphones where users are accessing any and all pages on the web, the for a DSC can be entirely designed by the manufacturer and can take maximum advantage of this property of OLEDs.

Instead PenTile technology is applied here to enable such high resolution while maintaining such good brightness and a display  lifetime equivalent to lower resolution displays.

2. The author says

The other difference is that, rather than using a red, a green and a blue triplet of dots to represent each pixel, it uses pairs of sub-pixels to present the same information, in a way that is claimed to be visually indistinguishable. This technology, originally developed by a Californian company, is now owned by Samsung. As explained in this white paper, the screen offers the same resolution in luminance terms as a conventional screen. What isn’t made quite so clear is that you don’t have full color information at each pixel (because you’ve effectively got 640×480 green sub-pixels and two offset 320×480 matrices of blue sub-pixels and red sub-pixels).

Nouvoyance never says that PenTile is visually indistinguishable. We do say that it is equivalent in resolution per the VESA spec offering the same resolution as an equivalent RGB stripe display.  The author then says we don’t have the full color information at each pixel.  This is not the case.  Subpixel rendering allows us to create luminance centers at every logical pixel on the screen in the full resolution–here at 640 by 480 VGA.  It is quite true that there are fewer red and blue subpixels than green, so the red and blue luminance information may be positioned slightly further from the center of the center of the pixel in some circumstances, but every pixel will have the correct and full luminance information.

The comment that PenTile doesn’t have full color information at each pixel is strictly speaking correct, but this has far less impact than those words convey.  There is full color resolution in the vertical and horizontal at every pixel, but there is a slight reduction in color information on the diagonal. It would not be possible to detect this for photographs.  For PenTile RGBG OLED there is a reduction in chrominance information on the diagonals, but it is not such a reduction that the human vision system (HVS) can detect this except for selective test patterns which would involve fully saturated red on black.  Keep in mind that the human vision system can resolve 50-60 cycles/degree of luminance information, but only 6 cycles/degree on the red/green line of colors and only 3 cycles/degree on the blue yellow line of colors.  For this reason the vision system cannot tell where each color subpixel is located relative to the logical pixel.  As an expert on cameras the author is probably familiar with how the camera sensor uses a Bayer pattern (see below) that functions in much the same way.   Similarly, JPEG compression uses the same difference in resolution of luminance and chrominance to achieve some portion of this compression.  In neither of these cases, do people claim that these implementations lack full color information.

Overall the review was excellent, but I wanted to set the record straight as to the purpose of PenTile OLED, what we claim for the merits, and what we achieve with this technology.

Samsung Experience Media Tour

300 dpi PenTile tablet panel

On June 6-7, Samsung hosted a media event in their amazing facility on the third floor of the Time Warner Bldg at Columbus Circle in NYC.

This gave us a chance to show off our 10.1″ WQXGA to editors and bloggers who didn’t have the chance to see this at SID DisplayWeek in LA. Scott Birnbaum VP of New Business Development for Samsung Electronics presented both PenTile and Transparent Display technology that Samsung is now developing. It is always very useful to collect live feedback on our newest displays.

Joel Pollack demonstrating PenTile RGBW display.

Award Winning PenTile Display

It seems that one of the displays using PenTile technology has received an award, the Silver Display of the Year Award (see below).  Actually the award was given to Samsung SMD who created the display for the Samsung Galaxy S that used innovative methods for combining an OLED display with an optically bonded capacitive touch panel that was a big part of the Galaxy S success.  Many bloggers have already noted that this display was PenTile RGBG.  For some time now Samsung SMD has been demonstrating  and selling displays using PenTile OLED in sizes of 3.1-inch, 3.3-inch, 3.5-inch, 3.7-inch,  4.0-inch and 4.1-inch.  It is great to know that the prestigious Society of Information Display has recognized the “exceptional display quality” of this design.

The press release on this year’s awards can be found here:


Silver Award: Samsung Mobile Display On-cell Touch AMOLED

Samsung Mobile Display developed its OCTA – on-cell touch active-matrix light-emitting diode (AMOLED) – display to meet the ever-increasing performance and industrial design demands of today’s modern mobile devices. Unlike prior-generation touch-capable mobile displays, the OCTA display integrates the touch sensor onto the display itself, rather than fabricating the sensor on a separate glass substrate and then laminating it onto the display. This innovation, embodied in the OCTA’s projected capacitive touch detection technology, greatly reduces product weight and thickness, while increasing touch performance and response via the multi-sensor input capability that enables gesture recognition for the most advanced mobile devices. Moreover, because AMOLEDs are self-emissive, no backlight is required, allowing the Samsung OCTA display to deliver very high performance and exceptional display quality, with highly accurate and sensitivity-optimized touch input, in a module that is less than 2 mm thick and provides nearly 100-percent light transmission and exceptional outdoor visibility.

Day 1: SID recap

Visitors to the PenTile SID demonstrations at SID

Day 1 at SID is behind us and we’re pleased to say we had an incredibly busy day. The Samsung/Nouvoyance demonstrations were mobbed, almost to the point that it was difficult to walk through virtually all day. The demos of the new WQXGA 10.1″ tablet display, as well as those for the multiprimary PenTile displays, performed stunningly.  We were glad to see some tech industry experts, including some folks from Engadget, come through and take a tour of the new tablet display.

But we were also pleased to see that the PenTile multiprimary display demonstration got a bigger crowd throughout the day. We are encouraged that this means good things to come for our entire line of PenTile displays.

Demonstration of PenTile Multiprimary Display

Thanks to all who stopped by yesterday. If you’re in the neighborhood of SID, stop by our booth #707 and see the displays for yourself!

WQXGA: What People are Saying

“The debate about when a “retina display” for tablets will exist is over: Samsung’s new 10.1-inch, 2560×1600 display is it. With a crazy pixel density of 300dpi, it rivals what Apple considers a retina display for a phone. But it’s for tablets… Our eyeballs can’t wait.”
- Gizmodo

“So what does all this mean to consumers? Basically — we’re going to be getting some seriously high quality displays in some of the upcoming tablets. Luckily for us, those displays will be lighter and 40 percent more power-efficient. Which, is a great thing — that stuff leads to lighter, visually better and longer lasting tablets.”
- Android Central

“From Samsung we’ll be seeing its 10.1-inch 300ppi prototype LCD panel, which rakes up an astonishing resolution of 2,560 x 1,600 under the battery-friendly PenTile RGBW matrix (not to be confused with AMOLED and Super AMOLED’s RGBG arrangement).”
- Engadget

“And if you weren’t already thinking it—yes, this is perfect for tablets.”
- Wired/Ars Technica

“[Samsung] just announced a 10.1-inch LCD display with 300 dpi (a measure of how many dots they’ve crammed into an inch—300′s high for a tablet) and WQXGA resolution, a staggering (and tablet-record-setting) 2560 by 1600 lines.”
- TIME’s TechLand

“Samsung’s new display does prove that high-res, tablet-sized displays are indeed possible without giving up power efficiency…”

“Samsung subsidiary Nouvoyance is set to reveal an impressive 10.1-inch LCD next week that could be used in future tablet computers.”

“The new PenTile WQXGA display has double the resolution found in the forthcoming Samsung Galaxy Tab 10.1 and has more than five times as many total pixels as the iPad’s 1024-by-768 display.”
- PC World

“Samsung has fit a version of its upcoming Galaxy Tab 10.1 tablet with a high-resolution screen that will rival high-end screens such as Apple’s retina displays.”
- LA Times

“Thought the iPad 2′s 1024 x 768-pixel screen was the last word in high-resolution tablet displays? How wrong you were.”
- Laptop Mag

“Samsung [is] getting ready to show the world their stunning new 10.1 inch LCD screen which has a staggering resolution of 2560×1600 pixels, normally reserved for 30 inch panels.”
- KitGuru

“While current display technology works just fine in tablets, having a higher resolution display will certainly improve the tablet experience, especially as displays approach the sharpness of print media.”
- MobileBeat