Rollable OLEDs: introduction and market status

According to a report from Korea, Samsung is progressing with its rollable OLED development project, and the company aims to launch its first rollable smartphone in 2025. When fully opened, the phone will sport a very large 12.4" display. Interestingly, Samsung apparently will implement an under-the-display camera solution.

Samsung's acceleration of its rollable phone project is seen as the Korean device maker's response to Huawei's tri-folding smartphone, the Mate XT. It is seen that this was an embarrassment for Samsung, that recently also to witness LG Display's leading over it with tandem OLED production. It will remain to be seen whether Samsung's acceleration will lead to problems in quality and reliability - which happened when it launched the world's first foldable phone back in 2019.

Last month China-based Voyah announced a new international all-electric SUV called the Zhiyin, that includes several innovative technologies. The taillights of the car are OLED lighting based, with 33 individually controlled OLED units on both the upper and lower sections, creating unique light patterns. We assumed that Yeolight is the OLED panel supplier, and indeed now the company confirmed that.

In addition to the OLED taillights, the Zhiyin will also an AMOLED display - a "curved sliding screen" that can "slide to accommodate different user needs". While this is not confirmed, we assume that this is a similar display to the one Hongqi just revealed yesterday - a sliding rollable 14.2" AMOLED panel produced by Visionox.

China's Hongqi launched its latest luxury executive sedan, the Guoya (国雅), as part of the Hongqi Golden Sunflower series. The model was previously known as the HongqiL1.

The Hongqi Guoya adopts a 14.2" rollable (sliding) AMOLED display for the center multimedia display. This is the first time such an automotive sliding AMOLED display is produced commercially (and the only second rollable screen following LG's 2020 rollable 65" OLED TV which is now discontinued). The AMOLED display is produced by Visionox, and we know that it adopts an Ultra-Thin-Glass cover. Visionox says that the display weights less than 250 grams, and it has been tested for over 200,000 cycles. 

China-based Tianma had an impressive booth at Displayweek 2024, showing numerous OLED and microLED displays and prototypes.

For the automotive market, Tianma showed three new display prototypes. First up is a 13" slidable OLED, with an embedded touch panel, aimed towards car dashboards or center controls.

During Displayweek 2024, Visionox demonstrated many OLED display technologies and panels, and also an interesting microLED prototypes (produced by its subsidiarity Vistar).

Visionox is in the final stages of development of its ViP maskless display production process, and the company showcased some nice ViP smartphone panel prototypes (the technology can be used for any panel size). ViP offers a high improvement in aperture ratio (69% up from 29%) which results in low power consumption and brightness (up to 4X according to Visionox), improved lifetime (up to 6X), improved PPI and more.

TCL CSOT demonstrated its latest displays, technologies and prototypes at Display Week 2024. The company is focused on inkjet printing technologies, and a lot of the displays on show were indeed printed.

So first up, we TCL demonstrated a 14" 2880x1800 400 nits 30-120Hz ink-jet printed LTPO AMOLED display. The display is produced on a glass substrate, with thin film encapsulation (a 'hybrid OLED').

There are some reports that Lenovo is developing a new tablet device that will use Samsung's 17" slidable AMOLED display. The display will be 13" in size when closed, and will be able to roll (slide) up to 17". Lenovo hopes to launch the tablet by 2025.

Back in 2022, Intel demonstrated a laptop device with a 17" rollable AMOLED display, produced by Samsung Display. Since then SDC demonstrated several similar concepts, including a panel that is both foldable and rollable.

BOE had a large demonstration at Displayweek 2024, showing several display technologies and many new panels and prototypes.

First up we have a slidable OLED display, one of the largest we've seen, at 31.6". The display offers a resolution of 5944x1672, a sliding distance of just over 260 mm (BOE says its the world's longest) and a sliding radius of 5 mm.

Samsung Display had a rather large booth at Displayweek 2024, showing its latest OLED displays and technologies. Samsung showed several displays - including foldable smartphone panels, laptop and tablet displays, two QD-OLED displays, its 9.4" round automotive AMOLED, and more.

One interesting display was a panel that combines a foldable and a rollable display, that can open up to an impressively large display. Samsung brands it as a Flex Note Extendable Display.

In early 2019, LG launched the world's first rollable OLED device - a TV that rolls into its base. The 65" Signature OLED TV R had three viewing options - full view, line view and zero view, and was heralded as a radical new TV form factor. The OLED TV R had a high price tag (around $100,000) and obviously never attracted a large customer base.

LG Electronics now decided to stop selling the TV, and not release a new edition. It actually disbanded its small dedicated production line, and will now focus on other high-end premium TVs instead, such as the transparent Signature OLED T TV.