-
- News
- Books
Featured Books
- design007 Magazine
Latest Issues
Current IssueBreaking High-speed Material Constraints
Do you need specialty materials for your high-speed designs? Maybe not. Improvements in resins mean designers of high-speed boards can sometimes use traditional laminate systems. Learn more in this issue.
Level Up Your Design Skills
This month, our contributors discuss the PCB design classes available at IPC APEX EXPO 2024. As they explain, these courses cover everything from the basics of design through avoiding over-constraining high-speed boards, and so much more!
Opportunities and Challenges
In this issue, our expert contributors discuss the many opportunities and challenges in the PCB design community, and what can be done to grow the numbers of PCB designers—and design instructors.
- Articles
- Columns
Search Console
- Links
- Events
||| MENU - design007 Magazine
Scrona, Avantama Collaborate to Redefine Quantum Dot Processing with EHD High Patterning Resolution for Displays
January 23, 2024 | PRNewswireEstimated reading time: 2 minutes
Scrona AG, the additive manufacturing startup and world record holder of the smallest ever printed color picture, and Avantama, a leader in high-tech materials for electronics, announced that they have successfully processed high-performance quantum dot (QD) ink using Scrona's electrohydrodynamic (EHD) inkjet printing. This collaboration combines the benefits of the inkjet process with high-patterning resolution to drive a new generation of efficient and cost effective MicroLED displays, while also increasing color purity and brightness, and improving overall pixel production tact time.
"We continue to find new applications of EHD that will meet the demands of the industry by offering an additive, completely waste-free process with higher resolution capabilities than lithography patterning," said Dr. Patrick Galliker, co-founder and CEO of Scrona. "While conventional inkjet printheads require inks of low viscosity, Scona has already demonstrated printing inks 1,000 times what they can process, paving the way for a much more efficient generation of MicroLED displays."
"Conventional inkjet printing is not a viable option for emerging MicroLED displays because they use much smaller pixels than QD-OLED displays," said Dr. Norman Lüchinger, co-founder and CTO at Avantama. "By partnering with Scrona, we have been able to demonstrate that an OD greater than 1 can be obtained with a perovskite QD layer thickness below 2µm. This can reduce the printhead nozzle count by a factor of five and deliver a thin QD layer that improves the overall efficiency and production tact time of MicroLED display technology."
Scrona and Avantama Technology
Scrona print head technology processes QD inks using EHD inkjet printing, whereby droplets are ejected from a nozzle by electrostatic forces. By exposing the ink to an electric field that originates from the outside of the nozzle, ions are pulled to the liquid surface and then start to create mechanical stress on the liquid body. The density of ions at the surface are controlled by adjusting the intensity of the voltage that is used to create the electric field. The forces created inside the liquid are not uniform on the liquid surface, as is the case in traditional inkjet heads, but focus to the very center of the nozzle while the liquid is continuously pulled out. Droplet size can be controlled by the applied voltages, including droplets that are one order of magnitude smaller than the nozzle itself.
Avantama perovskite QDs having the highest absorption coefficients among QDs, allowing printing thinner pixels with good optical density that significantly reduces tact time. Perovskite QDs have the highest weight-based absorption compared to others QDs, and this directly translates to very high OD/thickness values. One of the main reasons for this outstanding property is the inherently defect-tolerant nature of perovskites, that means a passivating shell is not required to enable high emission quantum yields.
Suggested Items
Inkjet Solder Mask ‘Has Arrived’
04/10/2024 | Pete Starkey, I-Connect007I was delighted to be invited to attend an interactive webinar entitled “Solder Mask Coating Made Easy with Additive Manufacturing,” hosted by SUSS MicroTec Netherlands in Eindhoven. The webinar was introduced and moderated by André Bodegom, managing director at Adeon Technologies, and the speakers were Mariana Van Dam, senior product manager PCB imaging solutions at AGFA in Belgium; Ashley Steers, sales manager at Electra Polymers in the UK; and Dr. Luca Gautero, product manager at SUSS MicroTec Netherlands.
Lee Corfe Joins Electra Polymers Electrajet Inkjet Materials Team
04/03/2024 | Electra Polymers LtdElectra Polymers Ltd is excited to welcome Lee Corfe as the newest addition to Electra’s inkjet team. With an impressive background and a wealth of experience in high-performance functional inkjet materials, Lee brings a fresh perspective and a dynamic skill set to our organization.
Electra Polymers Ltd Expands Manufacturing Capacity, Invests in New Facilities and Talent
03/26/2024 | Electra Polymers LtdElectra Polymers Ltd, a leading provider of coatings for the electronics industry, proudly announces a significant expansion of its manufacturing capacity for inkjet materials. The company is making substantial investments in new facilities, talent acquisition, and cutting-edge laboratory equipment to meet the increasing demand for high-performance functional inkjet materials in the market.
EIPC Winter Conference 2024, Day 2: A Closer Look at Global Trends
02/14/2024 | Pete Starkey, I-Connect007The opening session of the second day’s conference proceedings focused on global PCB trends and was introduced and moderated by Dr. Michele Stampanoni, vice president of strategic sales and business development at Cicor Group in Switzerland. He opened the session with Dr. Hayao Nakahara’s knowledgeable and enlightening video presentation on the IC substrates industry.
All4-PCB Announces New Partnership with USA Microcraft
02/09/2024 | all4-PCBAll4-PCB, a leading supplier of process solutions, equipment and consumables for PCB, LTCC, and CHEMICAL MILLING manufacturing industries, is excited to announce a partnership with USA Microcraft for Sales Support across North America.