Rollable OLEDs

Last week Samsung Display showed its latest flexible OLED prototypes, with some impressive new displays. We'll start with the OLED Cling Band, a sort of wrist smartwach that wraps around your hand.

Samsung also showed a 17.3" foldable laptop display, a rollable and foldable device (Rollable Flex) that is 12.4" when fully opened, tri-folded displays and more. These are not new displays, but it is clear that Samsung is pushing forward with its flexible display technology to new designs.

Interesting rumors from China suggest that Huawei is planning to release the industry's first smartphone that sports a tri-foldable OLED. When fully open, the device will sport a 10" display, which means it will double as a full tablet and a smartphone. Huawei's plan is to release it in the first half of 2024.

Samsung tri-folding AMOLED prototype

The rumors continue to suggest that Samsung Electronics noticed Huawei's plan, and the Korean smartphone maker may decide to be the first on the market with a novel device, launching its own tri-folding phone - or perhaps even the first rollable phone. 

BOE demonstrated a new rollable AMOLED display at CES 2024, a dual-slidable display, that opens up on both sides.

When closed, the display is 13.6" in size, and when fully opened, it is 16.8". BOE did not disclose any more details.

Samsung Display is showing its latest rollable automotive OLED panel, at CES 2024. The company says that this display, still at a prototype-stage, incorporates new technologies that enables it to be 30% thinner compared to SDC's previous rollable OLEDs.

Samsung is showing a wide of automotive OLEDs, including a display that is both rollable and foldable, check out the video above. There's also the round 9.4-inch AMOLED that will be used in the upcoming 2025 Mini Cooper.

TrendForce says that the demand for automotive displays is stabilizing, and the company expects modest growth ahead. By 2026, the global automotive display market will surpass 240 million units. 

TrendForce further sees an increased adoption of automotive OLED displays, and the market share of OLED panels will reach 8.9% by 2026. Demand for standard OLED displays is on the rise, and OLED makers are developing next-generation high-end automotive displays, including rollable, transparent and ultra-large panels.

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.

LG Display demonstrated several exciting OLED display prototypes at Display Week 2023.

First up was the company's 77" 8K Meta (microlens-array) panel - this has been commercialized already, but it is always a wonder to watch this particular display which offers an extraordinary image quality.

TCL CSoT had several interesting new OLED demonstrations at SID DisplayWeek 2023, all of which were produced by inkjet printing, which shows the company's commitment to the new production process.

First up is the company latest inkjet-printed panel, this time CSoT showed a 8K (7680 × 4320) 65" TV panel that is foldable (with a bending radius of 25 mm). The panel offers a peak brightness of 800 nits, a response time of under 1 ms and a refresh rate of 120Hz.

During Display Week 2023, BOE showcased a 15" 2560x1600 rollable OLED display.

The display offered a rollable radius of 10 mm (outwards), and can roll 50 mm of its length, changing from the full 15" 16:9 display to a 13.6" 24:9. This is not as impressive as Samsung's rollable demo that grew 5 times its original rolled size.

Samsung Display demonstrated many OLED technologies at Display Week 2023, which we'll detail below. It seems that the main new technology was the Sensor OLED Display, which is an OLED with an embedded sensor that can perform fingerprint sensing in addition to blood pressure, heart rate sensing and stress level sensing (all from reading the finger), which the company says is the first such display in the world.

The Sensor OLED Display embeds light-sensing organic photodiodes (OPDs) inside the display itself, which allows it to perform the sensing functions all over the display. Samsung explains that as OLED light is reflected differently depending on the contraction and relaxation of the blood vessels inside the finger, the OPD senses the light when it returns to the panel, and converts it into health information.