OLED/PLED-News Website --> OLED-Display.net (Organic light emitting diode)


 
AMOLED means Active Matrix Organic light emitting diode
 
AMOLED and OLED TV Television


CES 2007 The best Videos and pictures from the newst OLED TV panels

The AMOLED technology have full layers of cathode, organic molecules and anode, the anode layer overlays a thin film transistor (TFT) array that forms a matrix. The TFT array itself is the circuitry that determines which pixels get turned on to form an picture.

Seiko Epson developed the so far largest full-colored OLED display (Organic Light Emitting diode display) with the help of conventional ink printing. The prototype 40 tariff large, particularly thin and easy displays is itself by particularly high contrast, large point of view and quick response times distinguishing quantity production not 2007 ago planned.

oledfrom epson


SAMSUNG 40 Zoll PROTOTYPE OLED-TV

Samsung uses the International Meeting on Information Display 2005 conference, currently held in Seoul, to show its most recent devices. Among the products are several products that have been part of press releases but have not been shown to the public. This includes a monstrous 82-inch LCD TV panel that offers 180-degree viewing angles and a color saturation of 92 percent, according Samsung.
Full-color AMOLED displays based on a white emitter with an RGB color-filter array have been reported as an alternative technology to those displays with patterned RGB emitters due to their relatively higher cost. RGB displays based on a white emitter have a disadvantage in power consumption because part of the energy of the white light is absorbed by the color filters. Recently, a white-emitter-based AMOLED display with an RGBW pixel format has been demonstrated.
Also on display is a thin 40-inch active matrix OLED with a resolution of 1280 x 800, a brightness of 600, a contrast ratio of 5000:1 and color saturation of 80 percent. And there is news for mobile phones: Samsung demos an "always-on" section display that requires virtually no power on standby mode, according to the company: A dual-window structure divides the "indicator" display and main window. The indicator window, which only consumes 0.45mw of power, shows the time, day of week, remaining battery life, antenna status and mailbox status.
Samsung did not release any information on availability and pricing of these devices.

samsungoled

17 Zoll AMOLED TV from Samsung SDI

Samsung displayed its 17-inch AMOLED that was only 12mm thick — the panel itself is only 1.8mm thick, at the 2006 Korea Electronics Show. Being one of the thinnest in the world, the display is based on organic LED technology and generates brightness and image quality to LCD displays available today
Linktipp:
AMOLED Website from SAMSUNG SDI

  • Screen size: 345.6 x 259.2mm
  • Aspect ratio: 4:3
  • Viewing angle: >170 degrees
  • Resolution: 1600 x 1200 (UXGA)
  • Pixel pitch: 216um
  • Response time: 0.01ms
  • Colors: 262,144
  • Brightness: 400cd/m2 Contrast ratio: 10000:1

    amoled

The future outlook of AMOLED TV/OLEDTV

In order to impact the TV market, AMOLED TVs must be competitively priced with identically sized AMLCD and PDP TVs. In addition, certain milestones must be achieved, such as 40.000 hours of lifetime, a color gamut exceeding 80% of the NTSC standard, a peak luminance higher than 400 nits, a darkroom contrast ratio higher than 5000:1, and no image burn-in after a least 10 days of continous operation.

This issues that must be resolved include the attainment of a TFT threshold-voltage change of less than 0,2 V for the lifetime of the display, the elimination of fine mura, and a brightness uniformity of more than 80%.

To be cost-competitive, AMOLEDS must maintain a production yield comparable to that of AMLCDs, and the TFT backplane should be produced by using a process consisting of four or five photo-masking steps.

With the current pace of innovation and technological development, we anticipate that large-sized AMOLED Tvs will enter the market in about 2-4 years and dominate the TV market in the near future.


What are the Advantages of Active Matrix OLEDs?

Because OLED structures emit their own light, they feature several appealing performance characteristics.

Lower power consumption. With no need for backlights and extra heaters or coolers, eMagin microdisplays consume much less power than other near-eye displays of similar size and resolution. This permits products using OLED displays to operate using only USB port power.

Higher contrast. OLED materials can support the full spectrum of visible light.

A broader color gamut. Typically, eMagin microdisplays deliver more than the standard 24 bits of color (16 million colors) at the same time at any point on the screen. LCDs usually display subsets or pallets of colors or delay-smear changes so a far smaller number of colors is available at any point in time.

High-speed refresh rates. eMagin microdisplays have no problem supporting refresh rates of 30, 50, 60, 70, and even 85 Hz; individual pixels refresh in nanoseconds and there is no flicker.

OLEDs are many times faster than LCDs and even faster than CRTs. Fast motion and rapid eye movement more life-like.

Larger viewing angle. For near-eye applications, the Lambertian characteristics of OLEDs provide greater accommodation for pupil movement and more comfortable viewing  without distortion.

Ease of view. The OLED microdisplays with appropriate optics uniquely permit virtual images that appear realistic and are easy to view for long periods of time.

No need for energy wasting and distorting polarizers. In near-eye applications, chromatic distortion through enlarging optics is reduced. The lack of requirement for polarizers makes obtaining great images with low cost molded optics more practical.

Low cost systems solutions. In general, an OEM using OLED-on-silicon microdisplays will not need to purchase and incorporate lighting assemblies, color converter related Applications Specific Integrated Circuits, or ASICs, or beam splitter lenses as is the case in liquid crystal microdisplays, which also require illumination. Many important display-related system functions can be incorporated into an OLED-on-silicon microdisplay, reducing the size and cost of the system. Non-polarized light from OLEDs permit lenses for many OLED-on-silicon applications that are made of a single piece of molded plastic, which reduces size, weight and assembly cost when compared to the multipiece lens systems used for other microdisplays. System cost relative to competitive products is thus reduced. Because OLED displays are power efficient, they typically require less power at the system level than other display technologies at a given display size and brightness.

Wide operating temperature range. OLEDs offer much less temperature sensitivity at both high and low temperatures than LCDs without requiring heaters or loss of contrast. They turn on instantly and can operate between -55 ºC and 130 ºC. This is an important characteristic for many portable products that may be used outdoors in many varying environmental conditions. It is especially important for military customers. Insensitivity to vibration, shock, and pressure are also important environmental control attributes. eMagin specifies a smaller temperature range on most consumer products to accommodate lower cost packaging.