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Active Matrix OLED Microdisplay

Wed, 06/06/2012 - 10:13am
Active Matrix OLED MicrodisplayAttendees at this week's Society for Information Display conference here are being offered a view of the future courtesy of eMagin Corporation, which is unveiling the world's highest resolution, full-color microdisplay.

The new WUXGA OLED-XLTM microdisplay is being shown in a prototype head-mounted unit in eMagin’s booth (#539); it has also been selected for display and demonstration in the conference’s Innovation Zone exhibit area.  Attendees donning the headset will be able to view full-stereo, 1920 x1200 high resolution images offering a high definition 3D immersive reality experience.

eMagin is a leader in Organic Light Emitting Diode (OLED) microdisplays and virtual imaging technologies used in military and commercial applications. It developed the WUXGA OLED-XL in order to serve the needs of product developers and original equipment manufacturers seeking to design next generation diagnostic equipment, medical devices, simulation and training systems, equipment for homeland security and first responders as well as a diverse range of systems and devices for the aviation, industrial and augmented reality markets.

"Our new WUXGA OLED-XL microdisplay represents a continuing refinement of our proprietary core technology," said Andrew G. Sculley, president and CEO of eMagin Corporation. "The images we're now able to produce are so high quality and lifelike that we believe the technology will enable the product design community to unlock a broad range of new devices and applications in everything from still and movie camera viewfinders, security equipment, high-end gaming systems and personal entertainment applications to industrial and commercial applications."

The WUXGA OLED-XL microdisplay from eMagin is an active-matrix organic light emitting diode (AMOLED) microdisplay intended for near-to-eye applications that demand high resolution, high image quality, compact size and very low power. Combining a total of 7,138,368 active dots, the WUXGA display is built on a single crystal silicon backplane and features eMagin’s proprietary thin-film OLED XL technology offering extended life and luminance performance.

The active array is comprised of 1944 x 1224 square pixels with a 9.6-micron pitch and a 71 percent fill factor. An extra 24 columns and 24 rows (beyond the 1920 x 1200 main array) are provided to enable the active WUXGA display to be shifted by steps of 1 pixel in the X and Y directions for optical alignment purposes. Each full pixel is laid out as three 3.2 x 9.6 micron identical sub-pixels, which together form the 9.6-micron square RGB color group. Three primary color filter stripes are applied in alignment with the sub-pixels on a white-emissive OLED layer to form the color display.

The WUXGA design features eMagin’s proprietary “Deep Black” architecture that ensures off-pixels are truly black, and automatically optimizes contrast under all conditions. In addition to its flexible matrix addressing circuitry, the WUXGA includes an internal 10-bit DAC that ensures full 256 gamma-corrected gray levels, an on-chip set of look-up-tables for digital gamma correction, and a novel pulse-width-modulation (PWM) function that, together with the standard analog control, provides an extended dimming range. The PWM function also enables an impulse drive mode of operation that significantly reduces motion artifacts in high-speed scene changes.

The WUXGA includes a very low-power, low-voltage-differential-signaling (LVDS) serialized interface for video data transport that minimizes the number of board interconnections and connector size, reduces electromagnetic emissions (EMI), and enables a lightweight and flexible cable link to a remote video source. Compatibility with standard LVDS drivers simplifies the system integrators task.

eMagin Corporation
425-284-5212; www.emagin.com

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