QD Vision Highlights Safety and Efficacy of Its Quantum Dots; Calls on Nanoco to Substantiate Its Non-Toxicity Claims


LEXINGTON, Mass., US; March 16, 2016 — QD Vision calls on Nanoco to disclose the chemical composition of its quantum dot (QD) compound or stop making unsupported claims [1] about the purported non-toxicity of its QDs. The matter is relevant to the assessment currently underway at the Öko-Institut of Freiburg regarding a continuation of the current RoHS exemption allowing the use of cadmium selenide (CdSe) QDs in displays. Cadmium selenide, though a compound of cadmium and therefore within scope of the RoHS directive, is not classified for chronic toxicity.

It is generally accepted in the technical community that there are two compounds used commercially to produce color-converting QDs: CdSe and indium phosphide (InP).

  • CdSe QDs have been shown to provide the widest color gamut while delivering significant energy savings over alternative wide color gamut technologies. QD Vision and 3M offer CdSe-based solutions to display manufacturers worldwide.
  • InP QDs have been utilized in televisions beginning in early 2015, despite their inability to deliver the wide color gamut coverage or the energy efficiency performance of CdSe QDs. In addition, InP is classified as a Carcinogen 1B and is on the EU’s target list for inclusion in future RoHS restrictions. InP is described by leading environmental NGO ChemSec as “a regrettable substitution.”


Despite its inability to deliver a product to market, Nanoco claims its quantum dots are efficacious and safe (“non-toxic”), but without revealing its product’s composition.

Mustafa Ozgen of QD Vision stated: “CdSe QDs have been shown to provide not only the best color gamut, but also the best energy efficiency performance.  Meanwhile Nanoco continues to make public claims about the efficacy and safety of their QDs of unknown constitution, which have never been shown to work in a product.  Nanoco should substantiate the purported non-toxicity of its QDs by disclosing its QDs’ composition and either subjecting its QDs to independent testing and  proof or, if they have already undergone independent testing, release the full results.”

In the interest of achieving a transparent and fair re-evaluation of the RoHS exemption, QD Vision demands Nanoco make full information about the composition of its products available to permit independent assessment of its safety claims, including identification of the compounds included in its QDs and furnishing the status thereof under the EU’s Classification, Labeling and Packaging (CLP) regulation.


About QD Vision, Inc.

QD Vision, Inc. is a sustainable chemistry company and a leader in quantum dot display technology for QLED displays. Quantum dot technology is a superior next-generation alternative to OLED displays, providing unparalleled color representation at a highly competitive LCD cost structure. Color IQ quantum dot technology from QD Vision provides a unique optical component solution capable of delivering “full-gamut” color to the display industry. Founded in 2004, the company has raised more than $100 million in financing from top-tier venture capital firms and is headquartered in Lexington, Massachusetts.  http://www.coloriq.com

COLOR IQ, QLED, and QD VISION are trademarks of QD Vision, Inc.  The COLOR IQ and QD VISION trademarks are registered in one or more countries.


Media Contacts:

Anna Negrini
Direct:  +32 2 213 13 34


[1] http://www.nanocotechnologies.com/media/press-releases/wins-2016-prism-award-innovative-technology

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