7
Sep 2015
Knowledge Corner
with a low threshold voltage that is barely above the
emitted photon energy, i.e. ~2-3 volts. This is critical for
lowering the power consumption.
Despite its higher cost relative to the conventional
liquid-crystal display (LCD) , OLED display has been
widely adopted in consumer electronics. Samsung has
led the OLED penetration into the display market with its
several generations of Galaxy brand smartphones over
the last few years. Their latest smartphone (Galaxy S6)
sports an ultra-high resolution OLED rated the best in its
class. In the TV market, LG this year has launched 55”
and 65” ultra-high-definition (4K) OLED TVs that have
set a new standard for picture quality. It is fair to say
OLED is now exceeding LCD in most display criteria.
In the continuing evolution of OLED technology, it is
crucial to lower the cost of manufacturing OLED displays
without compromising their performance, a step that is
ongoing in the industry. It is also a continuing challenge
to solve the device lifespan problem for blue OLEDs. To
take on these challenges at HKUST, a joint research team
of Prof Ching Tang’s research group and IAS Senior
Fellow Prof Hoi-Sing Kwok’s team at the State Key
Laboratory on Advanced Displays and Optoelectronics
Technologies is formed to carry out innovative OLED
research in a newly equipped laboratory at Cheng Yu Tung
Building, which will be a center for industrial collaborations.
Their goal is to make OLED displays more durable and
cost-effective for a wider range of applications. It is
believed OLED will lead the display industry within the
next decade and will be ubiquitously adopted in our
society.
The latest “Wallpaper” TV from LG Display. © LG Display Co.
Samsung smartphone with an ultra-high resolution OLED has been rated
the best in its class of the market. © Samsung
