Future-Prove Your Display Production - Laser Solutions for Flat Panel Displays

This is a sponsored post by Coherent

Lasers are utilized for numerous processes in flexible OLED production, just as they are in the manufacture of other display technologies. In fact, it can be reasonably claimed that lasers are a key enabling technology in the fabrication of modern, flat panel displays. And it’s likely that they will continue to perform essential fabrication steps as flexible and foldable displays become more commonplace.

There is a variety of processes within the flexible display production line where lasers have an essential contribution to enable high throughput, high yield mass production. Nowadays, the complexity of the displays is getting larger and the number and tasks of lasers within flexible OLED production is increasing.

For this reason, choosing the right laser really means choosing the right laser supplier. Manufacturers need a partner who has the specific technical and applications development resources to identify the best and most cost-effective solution. Coherent is that partner

AP Systems developed an inkjet printing system for OLED OCR deposition

Korea-based OLED equipment maker AP Systems (APS) announced that it developed a new system to deposit optically transparent resin (OCR) using an inkjet printing process.

Current OLED production uses an adhesive tape (OCA) to connect the cover glass to the display. But OCA is time-consuming and relatively expensive. OCR, on the other hand, is deposited directly on the panel and is more cost effective. We recently reported that Samsung Display aims to adopt OCR technology in its foldable OLEDs to reduce costs, and is testing inkjet systems made by STI.

Technical challenges and price wars delay the industry's 8.5-Gen OLED IT displays production lines

Following strong demand for IT devices, and Samsung's success in the OLED laptop market, OLED makers have began to plan building new OLED production lines specifically for IT applications: laptops, tablets and monitors.

Several OLED makers, including Samsung, LG and BOE, are considering building 8.5-Gen production lines for this market. In fact DSCC estimated that there are 11 such lines under development right now. But it turns out that this is not so simple as designing the evaporation equipment for larger substrates is a challenge.

Kateeva did not yet receive any QD-OLED inkjet printers orders from SDC, and may lose its patent portfolio to its latest investor

In 2020 Kateeva lost Samsung's QD-OLED inkjet printing inkjet printing contact to Korea's Semes, which resulted in massive layoffs including some of Kateeva's executives.

Kateeva YIELDJet TFE system photo

In January 2022 it was reported that Samsung has decided to change course, and rely on Kateeva's inkjet printers in its 2nd QD-OLED production line, as the Semes printers do not perform as well as Samsung hoped.

Supply constraints slow down LG Display's OLED expansion plans

According to reports from Korea, supply chain issues are slowing down LG Display's OLED production expansion plans, and key components cannot be secured.

LG Display Guangzhou OLED TV fab ceremony photo

According to the report, the delivery times of some components have more than doubled, and Korean equipment makers cannot produce and supply the production systems that LGD requires. Only 9% of components used in equipment makers in Korea are produced in Korea.

Merck completes OLED facility expansion in Korea

Merck announced that it has completed its OLED manufacturing capacity expansion project at its Poseung site in Pyeongtaek, Gyeonggi Province, South Korea. Merck invested around 20 million Euros to install sublimation equipment and an OLED vacuum deposition unit.

Merck OLED site at Pyeongtaek, Gyeonggi Province inauguration photo

From the left, Jung Do Young, Director General for Economic Planning of Gyeonggi-do, WooKyu Kim, Managing Director of Merck Korea, Choi Won Yong, Deputy Mayor of Pyeongtaek City

Merck began to lay the foundation for R&D, production and the stable supply of OLED materials to Korean panel makers in 2005, as part of its successful strategy of achieving success through domestic research and production. The company continuously interacts with OLED researchers from Korean panel companies so that Korea can continue to lead the OLED industry, and Merck develops materials for OLED TV and flexible, rollable and foldable OLED displays together with its customers.

Notion Systems sells several n.jet EHD system

Notion Systems GmbH, a leading manufacturer of inkjet printing systems for functional materials, has received several orders for its newly developed n.jet EHD platform. The “EHD (Electrohydrodynamic) technology is a promising technology to reduce structure sizes to less than one micron and enables the use of higher viscosity inks. It supports printing of small structures in microelectronics, semiconductor and next generation display manufacturing. Notion will ship the first four n.jet EHD systems to undisclosed customers in Europe in the third quarter of 2022.

The overall benefits of inkjet printing in the display industry are:

  • Printing of smaller features sizes compared with conventional inkjet printing
  • Elimination and replacement of various process steps
  • Material savings, as printing is done digitally and without masks
  • Replacement of expensive process steps

Notion Systems n.jet EHD system and display

“Several presentations and discussions with industry representatives during Display Week 2022 in San Jose – USA revealed that inkjet printing technology for OLED/QLED displays will play an important role in future production. Since standard inkjet printing has a limitation at 400 dpi, EHD technology is the way to go. This was one of the main reasons why Notion entered into a cooperation with EHD printhead manufacturer Scrona in Switzerland last year, says Antonio Schmidt - SVP Sales & Marketing of Notions Systems

Samsung Display starts installing equipment at its 6-Gen A4-2 AMOLED production line Asan

Reports from Korea suggest that Samsung Display is starting to install production equipment in its new 6-Gen AMOLED fab in Asan. The A4-2 line (previously called the A4-E line) is a converted old LCD fab(L7-2) that was closed in early 2021.Samsung Galaxy S22 Ultra photoIt is estimated that the A4-2 line will cost around $800 million USD. Samsung hopes to start production in the new production line by Q3 2022, and monthly capacity will be 12,500 substrates.

Unijet supplies OLED microdisplay TFE inkjet deposition systems for Sidtek

According to reports from Korea, Unijet has supplied China-based Sidtek with inkjet printing systems, used for thin-film encapsulation (TFE) deposition of OLED microdisplays. This is Unijet's first sell of a commercial TFE printing system.

Unijet OLED TFE inkjet printing deposition system photo

Sidtek, established in 2016, is now producing 0.39" XGA OLED microdisplays, which are available on the OLED marketplace. Sidtek's 0.39" display is available in a color version (1,000 nits) or a monochrome one.

Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs