Quantum Dot Enhancement Film (QDEF) brings 50% more color to LCD displays
IMAGE: A comparison shows a liquid crystal display (LCD) type flat-panel display (FPD) without (left) and with (right) 3M's Quantum Dot Enhancement Film (QDEF). (Image credit: 3M)
St. Paul, MN--A new display film from 3M allows up to 50% more color than current levels in liquid crystal display (LCD) devices. 3M is in the final stages of scale-up for its Quantum Dot Enhancement Film (QDEF) and has teamed with Nanosys (Palo Alto, CA) to produce the 3M QDEF solution specifically to deliver more color and to make devices such as smart phones, tablets, and televisions lighter, brighter, and more energy efficient.
Current LCDs are typically limited to displaying 35% or less of the visible color spectrum. This means the viewing experience on an LCD (http://www.laserfocusworld.com/articles/2011/10/reflective-polarizer-for-lcds-increases-screen-brightness.html) can be vastly different than what a person sees in the real world. Wide color gamut displays will allow consumers to enjoy more visceral, more immersive, and truer-to-life color. "One of the many advantages of the new 3M QDEF solution is the film's ability to deliver richly-saturated colors, while minimizing power consumption--a difference you can clearly see," said Ty Silberhorn, VP and GM, 3M Optical Systems Division. "We will have qualification material available to customers for design cycles starting late second quarter this year."
Over the years, 3M light management technologies have made LCDs thinner, lighter and more energy efficient. Color performance of LCDs industry-wide has gone largely unchanged until now. 3M research data shows that devices with 3M QDEF-enabled wide color gamut will be noticeably different from other standard LCD devices, prompting the human eye to dwell on the display longer than less-saturated displays.
QDEF utilizes the light emitting properties of quantum dots to create an ideal backlight for LCDs, which is one of the most critical factors in the color and efficiency performance of LCDs. A quantum dot, which is 10,000 times narrower than a human hair, can be tuned to emit light at very precise wavelengths. This means display makers can create a highly-optimized backlight that only produces the exact wavelengths of red, green and blue light needed by an LCD for optimal color and energy performance. Trillions of these quantum dots protected by barrier film fit inside an LCD backlight unit. The new film replaces one already found inside LCD backlights, which means the manufacturing process requires no new equipment or process changes for the LCD manufacturer.
"Improving color performance for LCDs with simple, drop-in manufacturing solutions will create a stunning new visual experience for consumers," said Jason Hartlove, president and CEO, Nanosys. "Working together with 3M and utilizing their outstanding design and supply chain capabilities will allow our quantum dot technology to be widely deployed across all product segments, ensuring availability to all customers."
Both 3M and Nanosys will attend Society of Information Display’s DisplayWeek, May 21-23, 2013, in Vancouver, BC, Canada. For more information, go to http://www.displayweek.org.
SOURCE: 3M; http://news.3m.com/press-release/3m-bring-more-color-consumer-electronic-devices