The Fraunhofer FEP developed the world's highest density OLED microdisplay, reaching 10,000 PPI

The Fraunhofer FEP research institute announced that it has developed the world's highest-density OLED microdisplays, reaching a PPI of 10,000 with a pixel size of only 2.5 um. The Fraunhofer will demonstrate a 0.18" 1440x1080 (monochrome) OLED microdisplay next week at Display Week 2023.

The new microdisplays were produced on 300 mm wafers, using a 28 nm backplane process. The Fraunhofer explains that most OLED microdisplays to date are produced on 200 mm wafers, using CMOS processes ranging from 90-250 nm. The institutes new technologies enables the the performance increase in OLED display processing. 

Read the full story Posted: May 16,2023

Visionox new ViP OLED technology uses photolithography-based patterning to increase display performance

Visionox is introducing a new OLED production technology, called Visionox Intelligent Pixelization (or ViP for short) that enables higher-density display production, at over 1,700 PPI.

The idea behind ViP is to replace the fine metal mask (FMM) method with photolithography-based pixel patterning. The process offers several advantages, mainly the increase of aperture ratio to almost 70% (Visionox says the currently reach 69%). FMM methods usually achieve up to 30%, which means that brightness, efficiency and lifetime can all be increased.

Read the full story Posted: May 10,2023

Researchers develop an efficient stretchable TADF OLED emitter

Researchers at the University of Chicago, led by Sihong Wang (above) and Juan de Pablo, developed a stretchable OLED device that uses TADF emitters to enable high efficiency and high stretchability.

The researchers say that this is the highest-efficiency stretchable display demonstrated to date, as all previous designs used fluorescent OLED emitters. The TADF stretchable device achieves 10% EQE and a stretchability of 125%. The substrate of this new device is a newly synthesized polymer.

Read the full story Posted: Apr 13,2023

Researchers develop efficient and bright polariton-based OLED devices

Researchers at the University of St Andrews and the University of Cologne developed a polariton-based OLED device that offers angle-independent narrowband emission.

Polariton-Exciton quasiparticles are created when an OLED material is inserted into a high-quality microcavity. The researchers explain that by sandwiching the OLED device between two "mirrors", strong coupling and hybridization of light and matter can occur. This leads to the creation of the polariton particles. 

Read the full story Posted: Mar 17,2023

LG Displays adopts its MLA technology to its new gaming monitors

Last month LG Display announced its META technology, which is a micro-lens array (MLA) that increases OLED brightness by around 60% and viewing angles by 30%. The MLA technology was first adopted in LG's high-end TV panels.

LG UltraGear 27GR95QE-B photo

According to reports from Korea, LGD is now applying MLA to its gaming monitors, as it sees the growing gaming market as an important one for its future growth.

Read the full story Posted: Jan 31,2023

LG confirms its latest OLED TV panels use microlens arrays, brands it as META Technology

A few days ago LG Electronics unveiled its 2023 OLED TV range, which included the OLED G3, LG's slim all-in-one design OLED TV which is LG's brightest OLED TV yet. As we reported, LG Display announced today that its latest OLED panel adopts a micro-lens array to boost the performance.

Branded as META Technology, the OLED Panel is covered with a micro lens array to maximize the light emission. LGD says that this increase the brightness by 60%, and also increases the viewing angles by 30%. The G3 panel has a peak brightness of 2,100 nits.

Read the full story Posted: Jan 05,2023

LGD: all of our new OLED panels use deuterium-based OLED.EX technology

In December 2021, LG Display unveiled its OLED.EX (Evolution and eXperience) technology, that are based on deuterium-enhanced compounds to increase brightness by up to 30%. The company now announced that it has completed upgrading all of its WOLED TV production lines (in Korea and China) to EX technology, and all new panels will use the new materials.

LG Display says to develop the OLED.EX technology, it has 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.

Read the full story Posted: Nov 26,2022

MagnaChip announces its first power management IC designed for OLED IT displays

OLED driver IC developer MagnaChip has launched its first power management integrated circuit (PMIC) specifically designed for IT devices with OLED displays.

Magnachip IT OLED driver IC photo

A PMIC supplies power to electronic devices, and it is an important component in mobile devices to optimize power consumption. The newly-designed PMIC communicates with a system by using an Inter-Integrated Circuit (I2C) interface and can control functions such as output voltage control, ON/OFF block, output voltage sequence management, and more. It supports variable refresh rate OLED displays, from 60Hz to 240Hz.

Read the full story Posted: Nov 16,2022

Researchers suggest using the dipole moments of TADF host materials to increase emission performance

Researchers from the University of Cambridge, led by Dr Alex Gillett, have studied the effect of host materials (the dielectric environment) on the performance of TADF OLED emitters, and specifically how the dipole moment of the host material can affect the rISC rate of the TADF component.

University of Cambridge: the impact of the toluene solvent dynamics on the riSC process of TXO-TPA

The impact of the toluene solvent dynamics on the riSC process of TXO-TPA (left: TXO-TPA in an explicit toluene solvent environment, right: TXO-TPA in vacuum)

The researchers tested several TADF OLED materials, and in some of these materials, the effect of different host materials can be quite dramatic. It is believed that commercial TADF devices could benefit from tuning the host and emitter combination to achieve higher performance, including a better efficiency roll-off as conversion of triplets into singlets can be accelerated.

Read the full story Posted: Nov 15,2022

Toray Research Center to host an OLED technology webinar to discuss dopant ratios

Toray Research Center (TRC) is now hosting online webinars focused on display technologies. TRC, who supplies technical analysis and support for R&D and manufacturing, invites you to attend the online lectures at no cost, to learn more about OLED, microLED and QD technologies and analysis of OLED devices.

Toray Research Center TRC banner

The webinars include recorded presentations, which will be available online up until to November 22. You can register for the webinars here.

The webinar will include three different presentations:

  • OLED dopant ratio for efficient emission
  • Laser-based processes for microLED production, analysis method to evaluate chips after transfer
  • Degradation analysis of QD-LED devices

Read the full story Posted: Nov 15,2022