Language
Country/Area
No result found
The secret of quantum dots: How they make displays purer colors?
Along with the rapid advancement of display technology, quantum dot displays (QD Displays) stand out for their superior color purity and vividness. These small to nanoscale semiconductor nanocrystals with the ability to generate pure red, green, and blue light have profoundly influenced the application and development of modern display technology.
Quantum dots are able to display nearly 100% of the Rec.2020 color gamut, a feature that makes them very unique among display technologies.
In quantum dot display technology, these particles are able to be excited by blue light and emit pure color light. This means that they not only reduce light loss but also maximize brightness and color gamut. When blue light passes through the quantum dot thin film, it is converted into purer red and green light, a process that significantly reduces color cross-interference and light abandonment.
Working principle of quantum dots
The concept of quantum dots first appeared in the 1990s and began to be widely used in display technology in the 2000s. Quantum dots naturally produce monochromatic light, which makes them more efficient in the process of passing through color filtering. The core of this technology lies in the precise control of the color of quantum dots by adjusting their size.
The color of the light emitted by a quantum dot depends mainly on its size and composition, with small quantum dots releasing blue light while larger ones may release red light.
Application of Quantum Dot Enhanced Layer
A widespread practical application is the use of quantum dot-enhanced films (QDEFs) to enhance the LED backlight effect in LCD TVs. Lighting utilizing blue LED backlighting is converted to relatively pure reds and greens via quantum dots, thereby improving the color range and display.
Since Sony commercialized its Triluminos technology in 2013, many manufacturers such as Samsung and LG have also begun to demonstrate LCD TVs with this enhanced technology. The success of quantum dot technology has made these displays popular not only in home entertainment systems, but also in various products such as mobile phones and laptops.
Self-luminous quantum dot diodes
In the research of quantum dot displays, the technology of self-luminous quantum diodes (QD-LEDs) is also gradually developing. Similar to OLED technology, QD-LEDs are able to display colors by generating light directly within each pixel, avoiding additional backlight requirements, improving color saturation and light response speed.
By removing the liquid crystal layer, QD-LED displays achieve faster pixel response times and have the potential to improve the picture quality and durability of TVs.
Color performance of quantum dots
The color performance of quantum dot displays varies depending on the size or composition of the structure. Its performance is affected by the “quantum confinement effect,” which means that by changing the size of the quantum dot, its energy level can be adjusted, which in turn affects the color.
Concentrated colors and purity of colors have become significant features of quantum dot technology. Such displays are capable of providing extremely saturated colors, making them suitable for demanding color displays such as professional graphics and image editing.
Future Outlook
With the continuous advancement of technology, the future prospects of quantum dot displays are quite broad. The potential of this technology is not limited to current applications, but may also play an important role in more industries in the future. As scientists have explored, the development of quantum dots will impact the global display technology landscape.
With the improvement of quantum dot technology, will they become representatives of mainstream display technology, or will there be other technologies that surpass them?
