At CES2017, various manufacturers have brought us dazzling new technology products. Among them, Samsung's new series of QLED TVs is one of the highlights. With its new nano-crystal semiconductor quantum dot materials, it has improved luminous efficiency and And bring a wide color gamut ahead of the screen, to enhance the color display of the screen to a new height.
Quantum Dot QLEDs evolve LCD technology to the "perfect ultimate form"
So what exactly is this QLED? What is special about its application, so that large companies like Samsung have recently released new products using this technology?
Quantum Dot QLED: Technical Principles / Development History
Quantum dot QLED backlight technology
QLED, the English full name Quantum Dot light Emitting Diode, Chinese translation is quantum dot light-emitting diodes. It can also be called quantum screen display technology, which is a new technology between liquid crystal and OLED. The principle is to illuminate red and green light by illuminating quantum dots with blue LED light source. QLED core technology is "Quantum Dot" Point)", quantum dots consist of zinc, cadmium, selenium and sulfur atoms. As early as 1983, scientists at Bell Labs in the United States conducted in-depth research. A few years later, Yale University physicist Mark Reid officially named it "quantum dot."
QLED structure principle
Quantum dots are very tiny semiconductor nanocrystals that we can't see with the naked eye. They are particles with a particle diameter of less than 10 nm, composed of zinc, cadmium, sulfur, and selenium atoms. This material has a very special property: when the equi-ion point is stimulated by photoelectric light, it emits colored light, and the color is determined by the material that makes up the quantum dot and its size and shape. Because of this characteristic, it is possible to change the color of the light emitted by the light source. The quantum dot has a very narrow wavelength range of light emission, and the color is relatively pure and can be adjusted. Therefore, the quantum dot display has a clearer and brighter picture than the liquid crystal display.
Quantum dot QLED development history
In 2005, Cole Sullivan, who graduated from the Massachusetts Institute of Technology, founded QD Vision, and then QD Vision teamed up with LG Display of Korea and Solvay of Belgium to research and manufacture QLED active matrix displays, of which QD Vision is responsible for providing quantum. Point core technology, LG Display is responsible for product production.
QD Vision is committed to researching quantum dot QLED display technology
In addition to QD Vision, Nanosys, a Silicon Valley company in the United States, is also studying the quantum dot QLED backlight technology. The side-marking quantum dot QLED backlight technology has a bright future. Next, we are going to discuss the technical characteristics of quantum dot QLED backlight technology. In fact, from the perspective of industry support, quantum dot QLED display technology has the capital to change the market structure.
QLED technology analysis: the "perfect form" of LCD
Quantum screen QLED technology analysis
The quantum dot QLED display technology is to put the optical material of the quantum dot between the backlight and the liquid crystal panel, so that the color gamut can reach or exceed the level of the OLED, and even the polarizer on the light source side can be omitted, thereby effectively reducing the liquid crystal display product. manufacturing cost.
Quantum dot QLED working principle diagram
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