Exclusive interview with Gildas Sorin

Increasing the efficiency of OLED displays is something manufacturers have been working to perfect. Smithers Apex recently spoke with Gildas Sorin, CEO of Cynora to learn more about the latest technology. 

How did you first become involved with OLEDs/OLEDs research? What interested you the most about OLEDs?

I started my career at the French Thomson Multimedia company. During that time, I executed several general manager positions and became director of its semi-conductor activity. Following, I joined Philips Electronics as Vice President in Display Division. I became CEO of Novaled – the leading provider of electrical dopants for OLEDs - from the start of the company in 2003 till its sales to Samsung in 2013. In 2015, I has been appointed CEO of CYNORA. This company with its high performance blue OLED emitters is becoming a major player in OLED industry.

Tell us why the power consumption for OLED devices needs to be reduced? Why is it hard to reduce the energy consumption of blue light? How will Cynora’s technology impact the energy consumption of OLED devices?  

The power consumption of OLED devices needs to be further reduced. For mobile applications, the power consumption is crucial to allow for longer time period between battery recharges. This is a permanent issue for end customers and a strong commercial argument for display makers. This will be more and more crucial with display size increasing and as the battery is becoming thinner. For large screens, TVs makers see strong commercial features in a better energy label efficiency class of their products (look at COP21).

The reduction of the power consumption requires efficient materials for the basic colors. While the efficient red and green materials are already available, thanks to the phosphorescence technology, there are no highly efficient and stable blue emitters in the market. Currently used fluorescent blue emitters with EQE of 5% are not efficient enough and under customer requirements. The blue material remains the key issue for significant energy saving.

The TADF technology combines the advantages of phosphorescence (efficiency) and fluorescence (lifetime). Our TADF materials show up to 4 times better material efficiency than previous materials, which are based on fluorescence and allow for reduction of the power consumption by a factor of 2.

The decrease of power usage of displays (up to factor 2) will improve the user comfort for smartphones, tablets or smartwatches by extending their time between battery reloading.

We know that Cynora’s technology is still evolving but what impact will this have on OLED market? Will this reduce the costs of OLED products?

OLED will be cheaper than LCD (already the case for portable display) as OLED displays have a simpler structure. No need to use CYNORA material for that.

CYNORA materials will increase drastically the energy performance of the display. Our materials will reduce the panel power consumption by a factor of 2. Additionally due to reduced sub-pixel area, our material will enable the higher display resolution.

Indirectly the use of a CYNORA blue material can simplify the structure of a WRGB and therefore make it cheaper however.

What is the greatest advancement you’ve seen in the OLEDs field?

Apple realizing all the advantage they can get from a (flexible) OLED display for their IPhone and tablets after years of denying the OLED advantages.

What can OLED attendees expect to hear about during your presentation?

The presentation will focus on the forthcoming steps towards CYNORA’s commercial products end of next year. I will present the significant progress on our blue TADF emitters during the last 10 months.

What excites you the most about the OLEDs World Summit 2016?

Presentation by Samsung and LGD on the forthcoming generation of their flexible displays. Should be nice if Apple would introduce its display roadmap, and of course the excitement of the OLED industry realizing the progress made by CYNORA.