Glass - Page 3

The National Center for Flexible Electronics (FlexE) was established in 2014 as a Centre of Excellence at the Indian Institute of Technology (IIT) in Kanpur. The vision of the center is to "catalyse the development of domestic industry in the field of large area flexible electronics".

The FlexE center has some interesting OLED projects, and we recently had a discussion with researchers from the center to learn more about the OLED R&D activities.

DSCC posted an interesting blog post in which the company shares its information on Samsung's upcoming foldable smartphones.

Samsung Galaxy Z Flip

First up is the Galaxy Z Flip 3 (which is a bit strange as there's no Galaxy Z Flip 2). This new phone will feature an Ultra Thin Glass cover - which for the first time will not be exclusively produced by SCHOTT. This time Corning will supply some of the UTG for Samsung. According to DSCC, Corning’s UTG will be processed by Korean supplier eCONY. This is interesting - a while back it was reported that Samsung Electronics halted its UTG project with Corning.

Kolon Industries says that the company is supplying colorless polyimide (CPI) films to Xiaomi - used as cover windows for Xiaomi's latest Mi Mix Fold smartphone. Xiaomi sold over 40,000 such smartphones within one minute, and the company hopes to ship around 500,000 units in total.

Kolon says it is the only company that produces such CPI films, and the company says it also supplied films for Huawei's Mate X, Motorola's Razr and Lenovo's Thinkpad X1 foldable laptop - and will also supply to Oppo and Vivo for their own foldable devices.

UBI Research estimates that Ultra-Thin Glass (UTG) will hold a 80% market share in the foldable OLED panel cover material market. The rest of the market will adopt Polyimide films.

According to UBI, Samsung Display will only use UTG in its future foldable OLED displays. Transparent Polyimide films will be used in budget models, or for displays larger than 10" in size. BOE and CSoT currently use Polyimide films in foldable OLEDs, but both companies are looking to adopt UTG in future displays.

DSCC says that foldable smartphone shipments will rise sharply starting in August 2021 - and total foldable OLED smartphone shipments in Q4 2021 will be higher than the whole period from Q1 2020 to Q2 2021 - combined.

There are several reasons for this high increase in projected shipments. First of all, Samsung is expected to release several new foldable smartphones in Q3 2021 - three models in fact, including an "aggressively priced" clamshell foldable.

In October 2020 LG Electronics started shipping the world's first rollable OLED TV, the 65" 65RX OLED TV. The price is set at KRW 100 million (USD 87,000). That price was actually cheaper than expected - but according to a report from Korea LGE managed to sell only 10 such TVs.

According to the report, it's not just the high price that is keeping consumers away - the TV, which is based on rollable glass, is not very durable.

Samsung Electronics started to adopt ultra-thin glass covers for its foldable AMOLEDs, instead of polyimide, as it says UTG offers higher durability. Samsung currently uses Samsung Display's UTG, and according to reports it aimed to develop its own solution in collaboration with Corning

A new report from Korea suggests that Samsung Electronics has halted this project as it realized it should better increase the efficiency of its current supply chain (i.e. Samsung Display's UTG solution) and secure lower prices. It may be that this decision is only temporarily, as it is likely that Samsung Electronics is still aiming to also increase the durability of its UTG covers and not just decrease costs.

Last month we posted that the Korean Elec publication claims that Apple is aiming to adopt OLEDs in its next iPad Pro devices - and as Apple wants extended lifetime from these panels, the Korean panel makers are developing tandem OLED devices (easier for LG as it is already producing such panels for automotive applications).

Today another Korean publication, ETNews, has posted that Apple is aiming to start using OLEDs in its iPads in 2022. According to ETNews, Apple indeed reached out to both LG Display and Samsung Display for these OLEDs.

Dongxu (Tungshu) Optoelectronics has started to construct China's largest OLED substrate glass factory, in Tianshui City. Total investment in the new glass factory will be 5 billion yuan ($760 million), and the plant will include four 6-Gen glass production lines.

The local Tianshui Municipal Government helped finance the project and provided 2 billion yuan.

When Samsung launched its original foldable smartphone, it used a polyimide-based cover, and the screen was fragile and not very durable. Later in 2020 Samsung Display launched its ultra-thin-glass (UTG) cover (produced by Schott and processed by Dowoo Insys) which the company said is more durable the the Polyimide.

Samsung Electronics continued to adopt the new foldable UTG cover and used it in its Samsung's Galaxy Z Fold2 5G (7.6" 1768x2208 HDR10+ 120Hz Dynamic AMOLED) smartphone. But the question remains - just how more durable is the UTG-protected OLED?