Researchers use a 3D OLED pixel configuration to increase efficiency by up to 30%

Researchers from National Taiwan University, led by Prof. Chung-Chih Wu, have developed a 3D pixel configuration for OLED devices, which can improve the light extraction. The new design can improve the external quantum efficiency of a top-emitting OLED device by up to 30%.

Reflective 3D OLED pixel configuration (NTU)

The new design uses a 3D reflective pixel structure filled with a patterned high-index material. The researchers created several pixels with difference sizes, and found that the smaller the pixel, the higher the efficiency boost.

ETRI and KAIST researchers developed a new metal oxide charge transfer complex that can enhance OLED device efficiency

Researchers from Korea's KAIST and ETRI institute developed a new metal oxide charge transfer complex that, when dispersed in the OLED stack, can improve the OLED efficiency.

NiO and MoO3 complex (KAUST, ETRI)

The researchers have applied this material to a green and blue OLED device. The current efficiency of the green OLED was enhanced by 189%, while the external quantum efficiency of the blue OLED was improved by 17%.

LG Display's OLED EX technology improves the brightness, lifetime, size and image quality of its OLED TV panels, to be adopted in all WOLED panels by Q2 2022

LG Display unveiled its latest OLED TV technology, branded as OLED EX. LG says that these WOLED panels combine new deuterium compounds and personalized algorithms to improve the image quality and increase brightness by up to 30%. EX is an acronym of Evolution and eXperience.

LG Display OLED EX Technology photo

LG Display says that it has "successfully converted the hydrogen elements present in organic light emitting elements into stable deuterium". LGD extracts the deuterium compounds from water, and after stabilization, the compounds allow the OLED devices to be brighter - and also last longer.

The Fraunhofer Institute develops ultra-low power OLED microdisplays

The Fraunhofer FEP, in collaboration with GlobalFoundries Dresden Module One and digades, developed an ultra-low power color OLED microdisplay. The researchers at the Fraunhofer say that this display consumes the least power compared to all available microdisplays.

Fraunhofer Backplane ultra-low power microdisplay prototype photo

The new microdisplay was developed as part of the Backplane project, funded by the German government (SWMA grant number100392259). The researchers presented a prototype display that features two primary colors and a QVGA (320x240) resolution. The display is based on the Fraunhofer's existing OLED-on-silicon technology, which up until now was used to create monochrome microdisplays.

LGD is developing a tandem-stack 12.9" LTPO AMOLED display for Apple's 2024 iPads

A few days ago we posted that Apple has reportedly decided to delay its iPad OLED launch to 2023, and the company canceled its current joint development project with Samsung Display, as SDC could not develop what Apple wanted - a tandem stack structure, which would have improved the lifetime and performance of the AMOLED display.

According to a new report from Korea, LG Display is also developing a tablet display for Apple - a 12.9" AMOLED panel. LG's iPad display will be ready for mass production by 2023-2024, and it will use a tandem (2 stacks) architecture on an LTPO backplane. As SDC's project is canceled, it is likely that LG's 12.9" will be the first OLED adopted by Apple's tablets.

Kyulux: our green Hyperfluoresence emitter is getting close to commercialization

Hyperfluoresence emitter system developer Kyulux announced that its green material is getting close to commercialization. The company is now working closely with OLED makers, preparing for early adoption.

Kyulux OLEDs World Summit 2021 slide image

Kyulux says that its green emitter has not only met the required performance of OLED panel makers, in terms of efficiency, lifetime and driving voltage - but has actually surpassed the performance of green phosphorescent emitters in top emission devices. The green HF device achieves higher current efficiency, longer lifetime and offers a narrow emission spectrum and can thus enable better chromaticity.

DisplayMate: the iPhone 13 Pro Max display receives our highest overall display rating

Our friends at DisplayMate posted an in-depth technical review of the iPhone 13 Pro Max display. The 6.7-inch 1284x2778 10Hz-120Hz 1200 nits LTPO AMOLED receives DisplayMate's highest display performance grade of A+.

Apple iPhone 13 Pro photo

DisplayMate says that the new display outperforms the display adopted by Apple in last year's iPhone 12 Pro Max. The iPhone 13 Pro display's new adaptive 120Hz refresh rate which results in a 25% boost to power efficiency. The new display is also brighter by 27% and enjoys a higher absolute color accuracy. The size of the notch was also reduced by 20%.

Researchers achieve impressive OLED efficiency boost by using corrugated alloy electrodes

Researchers from Jilin Univeristy in Changchun, China, have managed to improve the brightness of OLED devices by 25% (21 enhancement in current efficiency) by applying corrugated alloy (Ag-Al) electrodes.

AFM image of corrugated alloy OLED electrodes (Jilin University)AFM images of the corrugated alloy electrodes

The researchers say that the periodic corrugations were precisely tuned based on the composition ratio of the alloy to efficiently recover the photons trapped in surface plasmon-polariton resonance.

INT Tech developed a 5,000 nits AMOLED microdisplay, is still on track for mass production in Q4 2021

Taiwan-based INT Tech announced that it has produced new AMOLED microdisplay samples at its $143 million fab in Taizhou in Zhejiang province, China, and the company is still on track for mass production in Q4 2021.

INT Tech Taizhou OLED fab photo November 2020

The new 0.7-inch INT Tech uNEEDXR display is a direct-emission display that features a brightness of over 5,000 nits, 3147 PPI and a low power consumption (less than 500mW@5000nits).

Samsung Display announces the polarizer-free ECo2OLED tech

Samsung Display announced its latest OLED panel, the Eco²OLED, which increase light output by 33% compared to SDC's previous OLED panels. The increase light translates into a power consumption reduction of up to 25%.

Samsung Display Eco2 OLED vs. regular OLED

For the Eco²OLED panel, Samsung finally managed to commercialize a polarizer-free OLED, after many years of R&D. The first phone to adopt this display will be Samsung's upcoming Galaxy Fold 3. Interestingly Samsung says that the new design also enabled it to incorporate a high-quality under-the-display camera as more light is entered through the OLED.

Merck - Advancing Display, Advancing LifeMerck - Advancing Display, Advancing Life