Info
Info
News Article

QD Vision Develops 'first' 30 Nm FWHM Quantum Dots

The firm's CdSe-CdS emitters are suited to applications such as electronic displays and solid-state lighting
QD Vision has announced the commercial availability of what it says is the industry’s first green quantum dots (QD) at 30 nm Full-Width Half-Maximum (FWHM).


QD Vision claims its new 30 nm green QDs and enable display manufacturers to benefit from increased performance when developing high-brightness, full-gamut colour displays.  


The firm's  LCD products, where blue LED’s are used together with red and green QDs emit spectrally narrow red, green and blue colours to obtain full-gamut colour at a good efficiency.


By controlling the FWHM of the QD emission through manufacturing processes, QD Vision says its green and red QDs deliver the necessary colour saturation to achieve 100 percent overlap of any major colour gamut standard. These new 30 nm FWHM 'Color IQ' optics will further improve the colour performance in LCD applications, such as TVs, monitors and all-in-one computers.


“QD Vision continues to keep quantum dots on the leading edge of display technology," says John Ritter, Executive Vice President of Product Development, QD Vision. “Our solutions offer the best down-conversion material on the market today, and we continue to develop even narrower FWHM products to produce the most saturated colours at the highest efficiencies for our customers, both now and in the future."


QDs are semiconductor nanocrystals that possess unique light emitting optical properties. The emission wavelength spectrum of QD light can be tuned to create almost any colour of the visible spectrum as defined by the CIE 1931 colour space.


FWHM, is a simple and well-defined specification used to measure the narrowness (spectral purity) of the emission from light emitting materials, such as QDs. In short, a narrower QD emission produces a wider colour gamut, resulting in higher colour fidelity and improved backlight performance.


When used in an LCD product, the backlight emission passes through a colour filter. Some colour filters allow light leakage from one colour channel to another, resulting in de-saturated colours.


Unlike conventional phosphors with much broader light emission (e.g. FWHM ~ 60-100 nm), QDs have a narrower emission spectra, which helps to reduce the crosstalk between the colour channels and improve system efficiency. Also unlike phosphors, the individual emission spectrum of QDs can be fine-tuned to match the peak wavelength of a given colour filter to achieve the maximum gamut possible.





AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
×
Logo
×
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification}
Live Event