OLED production - Page 8

Industrial laser developer Coherent announced a new Monaco industrial ultraviolet (UV) femtosecond laser with 50 W of output power. The company says that the new laser, the first 50 W 400 fs UV laser with proven 24/7 industrial-grade performance, is ideal for high-speed, high-volume cutting of stacked-OLED displays. 

This laser is used to cut the OLED displays after they are fully produced, which is why Coherent uses the term stacked-OLED (it does not refer to an OLED display with a stacked - or tandem - emitter design). The laser cutting enables shapes, notches and holes. Coherent updates that it installed over 800 Monaco laser systems worldwide (not all at OLED display fabs, though, the Monaco systems are also used in other applications).

A few months ago we reported that Japan-based inkjet printing OLED developer JOLED has filed for bankruptcy, and that Japan Display (JDI) will take over JOLED's technology and operations. JDI released an official statement regarding JOLED and its plans for the future.

So indeed on March 7 2023, JDI signed a basic agreement to support JOLED. Since then the two companies held 'extensive discussions', following which JDI decided to form a subsidiary company called 'JDI Design and Development' or JDIDD, that will acquire JOLED’s OLED technology development business and all related operations.

China-based Visionox demonstrated many OLED displays and new technologies at Display Week 2023.

So first up, we have some rollable and foldable OLEDs. You can see some impressive looking such flexible OLEDs in the video above, and Visionox featured many such displays at their booth.

BOE has plans to construct an 8.5-Gen AMOLED production line with a capacity of 30,000 monthly substrates to produce IT displays for laptops, tablets and monitors. The company aims to build the B16 factory in Chengdu, Sichuan.

Asus ZenBook 17 Fold OLED (BOE panel)

According to Korea's ETNews, BOE is facing delays with its B16 plans. The company is seeking support from the local government, but it has yet to gain support.

China's largest OLED substrate (carrier) glass production fab has initiated production, with full production is expected by August this year.

This is the first phase of the production hub planned at the Weifang Optoelectronics Display Materials Industrial Park, in Shandong province. Total investment in this line was 1.4 billion yuan (around $200 million USD), and the construction of the 2nd phase in this project has now started as well. The total investment in the four planned production lines will reach around $720 million USD. 

Visionox is introducing a new OLED production technology, called Visionox Intelligent Pixelization (or ViP for short) that enables higher-density display production, at over 1,700 PPI.

The idea behind ViP is to replace the fine metal mask (FMM) method with photolithography-based pixel patterning. The process offers several advantages, mainly the increase of aperture ratio to almost 70% (Visionox says the currently reach 69%). FMM methods usually achieve up to 30%, which means that brightness, efficiency and lifetime can all be increased.

Omdia says that the utilization at display production fabs is on the rise, recovering from 66% in January 2023 to 74% in the second quarter, as demand for TVs, laptops, monitors and smartphones is on the rise.

However, this is mostly true for LCD displays. OLED producers are still facing low demand, and fab utilization remains below 60%. The industry has yet to recover from the oversupply it experienced in 2022. This is true for both mobile AMOLED displays and OLED TV panels.

In 2022, Japan Display (JDI) announced that it has developed a "historic breakthrough in display technology" - a new OLED deposition process which they refer to as eLEAP, that is said to be cost effective and can be used to create freeform OLEDs that are brighter, more efficient, and longer lasting compared to OLEDs produced using mask evaporation (FMM).

We now hear that China-based LCD maker HKC Corp has signed an agreement with JDI to adopt its technology for mass production of AMOLED displays. Under the agreement HKC will invest billions to build AMOLED factories in China, while JDI will provide the manufacturing expertise and technologies, including eLEAP. The plan is to begin mass production in 2025, with the first applications to be in automotive displays and wearable devices.

In August 2022, Samsung Display announced that the company decided to build a 8-Gen (2200x2500 mm) production line, which will begin production in 2024. The company now updated that it will convert an existing LCD line in Asan, South Chungcheong province, Korea - and the total cost of the project is $3.1 billion. Samsung Display received government subsidy for this project. 

Samsung says that the new production line will enable it to more than double its AMOLED tablet panel production. The company acknowledges the drop in demand for displays in general, but the company expects that demand for premium mid-sized panels will keep increasing.