Rollable OLED displays are exciting - as these displays can enable new device form factors - such as TVs that roll up into a small cylinder or a tablet-sized device that can roll-up into a pen.
Rollable OLED TVs
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 has three viewing options - full view, line view and zero view. This is a radical new TV form factor, which will be probably be highly expensive when it starts shipping during 2019 (we still do not know the exact release date and price). The TV offers the highest image quality - enabled by OLED technology.
Rollable mobile devices
While LG is leading the race to rollable OLED TVs, many display makers are developing smaller rollable OLED displays for mobile devices. Back in 2016, for example Samsung Display demonstrated a beautiful rollable OLED, a 5.7" display that featured a Full-HD resolution (386 PPI) and a curvature radius of 10 mm. The whole display is 0.3 mm thick and weighs 5 grams. We do not know yet when SDC plans to commercialize such a display (the company is currently focused on developing its foldable OLEDs).
The latest rollable OLED news:
The Fraunhofer FEP institute, the Holst Center and other partners have developed a 15-meter long OLED lighting panel, the longer OLED device ever (beating their own 2017 record of a 10-meter OLED). This work was done as part of the Lyteus, the EU's €14 million initiative within PI-SCALE.
The partners in this project say that this is the first OLED produced using a new unique roll-to-roll (R2R) process that combines the performance of an evaporated OLED stack with solution processing of auxiliary layers.
LG Electronics demonstrated its 65" rollable OLED TV prototype in 2018, showing how such a display can be used to create a TV that rolls into its base.
Engadget says that LG has plans to showcase a rollable TV again in CES 2019 (January 9-11). Engadget says that according to its information the rollable TV will take "center stage" in next year's event - which may point to the fact that LG is close to commercializing such a TV. In 2017 LGD did say it plans to bring rollable OLED TVs to market by 2020.
A team at Queen's University Human Media Lab in Canada developed a new concept device called MagicScroll that features a rollable display wrapped around a cylinder that can be rolled to scroll the information. The display can also be rolled up to act like a regular tablet.
The display used in this demonstration is a 7.6" 2K rollable OLED. This is actually a tiled display made from two 5.5" FHD OLEDs taken from two LG Flex 2 smartphones (thank you Andrew M. Abrams from SCMR for clarifying this!).
China-based AMOLED producer EverDisplay has recently demonstrated several flexible AMOLED prototypes at a trade show in China.
First up we the edge-type 5.5" FHD (402 PPI) AMOLED display, with a curvature radius of R6.5. The thickness of this display is 1.61 mm.
LG Display is demonstrating its latest prototype at CES, a 65" rollable OLED TV that can roll inside its base when not in use. The video below shows this display in action, although we cannot see how the display actually rolls inside the box which is a shame:
Remember that this is still just a prototype display, and it's likely that LGD has no immediate plans to actually release such a display. Last year LGD said it plans to bring rollable OLED TVs to market by 2020.
LG Electronics is bringing its new OLED TV lineup to CES this week, and LG Display already said it will demonstrate a 88-inch 8K OLED panel at the trade show. However the most exciting display will probably be LGD's newest prototype - a 65" rollable OLED TV that comes with a base that holds the TV when it is rolled away.
This is a prototype display, and it's likely that LGD has no immediate plans to actually release such a display. Last year LGD did say it plans to bring rollable OLED TVs to market by 2020.
Following LGD's recent demonstration of a 77" flexible and transparent OLED display, the company has now decided (according to Business Korea, anyway) to start producing rollable large-area (55 to 75 inch) OLED TVs in 2020.
LGD will produce these rollable TVs in its upcoming P10 OLED fab in Paju. The P10 is LGD's most ambitious OLED fab - with a price tag of over $8 billion, it is expected to commence production in 2018, although it will take some time before mass production begins. The P10 will exclusively be used to produce OLEDs - both OLED TV panels (9-Gen or 10-Gen substrates, it seems LG did not decide yet) and small/medium flexible OLEDs.
OLEDNet posted an article detailing the OLED technologies LG Display will showcase at CES 2017 in two days. LGD's most innovative displays will be a rollable 77" OLED TV panel and a double-sided UHD 77" display. LGD was also supposed to showcase a rollable OLED TV in CES 2016 - hopefully this time the company will actually show such a display in public.
In addition to those 77" displays, LGD will also showcase a 55" transparent FHD OLED. LGD demonstrated a similar display at CES 2016, but hopefully this new display will be closer to commercialization and maybe LGD will indeed detail such plans at CES. OLEDNet says that the new transparent display will feature improved colors and more natural image quality.
Two months ago Taiwan's ITRI institute demonstrated a foldable AMOLED display - which fold both inwardly and outwardly. Last week at Touch Taiwan, ITRI demonstrated a rollable AMOLED:
In addition to the foldable OLED, ITRI showed 36 different flexible display technologies - including new materials, substrates and patterning equipment.
Researchers from Korea's KAIST institute developed a rollable OLED device that uses graphene-based electrodes. The researchers say that the new OLED is much more durable when bent compared to current devices made with ITO electrodes.
The electrodes were made from a stack of materials - titanium oxides, graphene and conductive polymers. The new OLEDs were also brighter than current devices, and with a higher color gamut. This was achieved by maximizing the resonance within the OLED.