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OLED

Organic Light Emitting Diode (OLED) technology is driving the next wave of display innovation, offering brighter, more energy-efficient screens for smartphones, televisions, and wearable devices. Recent advancements in OLED manufacturing and flexible OLED screens are creating new possibilities for curved and transparent displays. As demand for high-definition visuals and dynamic displays increases, OLED continues to evolve, offering significant improvements in color accuracy, contrast ratios, and power efficiency. The continued growth of OLED technology ensures its vital role in electronics development and global display solutions.

Another step towards designer OLED materials

KyushuU oled theory

Researchers at Kyushu University have developed a more accurate model with which to design ‘thermally activated delayed fluorescence’ (TADF) OLED materials. Emission from OLEDs occurs when excited electrons drop to their regular energy state and emit energy in the form of fluorescence. Excitons to not have to go into the fluorescing singlet (S1) state, but can go into a triplet ...

Stacked OLEDs for super-bright micro displays

Fraunhofer IPMS multi layer ultra bright OLED

Augmented reality glasses need extremely micro-bright displays to compete with daylight, and if that is not a sufficient challenge for industry, power consumption and lifetime also need to be kept under control. Towards these triple goals, Fraunhofer Institute for Photonic Microsystems (IPMS) has developed a novel way to stack OLEDs “introducing a highly efficient monochrome OLED microdisplay with a brightness ...

Metal-free phosphor shows promise for OLEDs

OsakaU nonMetal phosphorescence photo

Bright fast phosphorescence is possible without heavy metal ions such as platinum or iridium, according to a team at Osaka University. Its researchers came across a molecule, thienyl diketone, which is a champion among organic phosphorescers. “We discovered this molecule by chance and initially did not understand why it demonstrated such superior performance,” said Osaka scientist Yosuke Tani. “However, as ...

Why new blue OLEDs die young

NPL Samsung OLED research

Next-generation blue OLED materials degrade early mainly due to the loss of oxygen in molecules at the interface between emission and electron transport layers, according to the UK’s National Physical Laboratory, which teamed up with the Samsung Advanced Institute of Technology to pull OLED junctions apart in minute detail. “The presence of these degradation molecules correlates negatively with the blue ...

Programmable dc-dc converter for active-matrix OLEDs

Diodes AL3565 oled dcdc

Diodes is aiming at active matrix OLED panels with three-output power management dc-dc converter. Running from 2.9 to 4.8V, AL3565 produces: 4.6 to 5.0V (VPOS) with 0.5% accuracy at up to 500mA from a buck-boost converter -1.4 to -5.4V (VNEG) with 0.5% accuracy at up to 500mA from an inverting buck-boost converter 5.8 to 7.9V (AVDD) with 0.5% accuracy at ...

Perovskite LED 1000x brighter than OLED

IMG_0206-300x200.webp

Imec has come up with a perovskite LED stack emitting light a thousand times brighter than state-of-the-art OLEDs. This result is a pivotal milestone towards a perovskite injection laser, promising applications in image projection, environmental sensing, medical diagnostics, and beyond. The maximum brightness of OLEDs remains limited; just think of trying to read your smartphone screen on a very sunny ...

2V blue OLED will work on Li-ion batteries

TokyoTech blue OLED emission at low voltage

Tokyo Institute of Technology has demonstrated a blue OLED with a forward voltage of 1.97V at 100cd/m2, and still emitting at lower voltages such as 1.5V (right). “Conventional blue OLEDs typically require around 4V for a luminance of 100cd/m2, this is higher than the industrial target of 3.7 V – the voltage of lithium-ion batteries,” according to the Institute. Its ...

Novel OLED structure could lead to 10,000 ppi displays for VR and AR

Stanford-meta-mirror-oled-display

It is possible to double the efficiency of colour OLED displays based on white-emitting material, and achieve 10,000 pixel-per-inch density, by replacing the rear reflector with a meta-material, according to Stanford University researchers. Generally there are two types of colour OLED display: displays with side-by-side patterns of red, green and blue emissive materials, and those with a white-emitting material (made ...

Updated: Stretchable OLED display proof-of-concept from KAIST

KAIST-stretchable-oled-display

An engineered substrate is the key to a stretchable OLED display built by Korean lab KAIST, that could lead to stretchable full-colour displays. Updated with more photos below Right: display bent over a fingertip The novel substrate is there to allow rigid pixels to be incorporated. “Traditional intrinsically stretchable OLEDs have commercial limitations due to their low efficiency in the ...