52-2:<i>Invited Paper</i>: OLED Microdisplays - Enabling Advanced Near-to-Eye Displays, Sensors, and Beyond

Vogel, Uwe; Richter, B.; Hild, Olaf R.; Wartenberg, Philipp; Fehse, Karsten; Schober, Matthias; Brenner, Stephan; Baumgarten, Judith; König, Pascal D.; Beyer, Beatrice; Bunk, Gerd; Ulbricht, Steffen; Schmidt, Christian; Jahnel, Matthias; Bodenstein, Elisabeth; Saager, Stefan; Metzner, Christoph; Kirchhoff, V. W. J. H.

doi:10.1002/sdtp.10780

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…The TE-type NIR-OLED structure is well suited for integration with a CMOS-based high-definition backplane formed on a silicon substrate ( 21 – 23 ). With such a combination, active scanning of fine NIR-OLED pixels becomes possible.…”

Section: Resultsmentioning

confidence: 99%

Three-dimensional sensing of surfaces by projection of invisible electroluminescence from organic light-emitting diodes

Yamada,

Nakanotani,

Takagi

et al. 2024

Sci. Adv.

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Organic light-emitting diodes (OLEDs) that efficiently emit near-infrared (NIR) light and consume little power will create valuable applications for OLEDs beyond just displays. Here, we report such a NIR-OLED with high operational stability that can be used as a light source for three-dimensional sensing of object’s surfaces. Using a narrow-energy-gap material as a host for producing NIR hyperfluorescence system, we fabricated a NIR-OLED exhibiting intense emission at 930 nm with a high external electroluminescence quantum efficiency of more than 1% at a current density of 100 milliamperes per square meter without any degradation even after more than 300 hours of operation. The NIR-OLEDs were integrated with dense complementary metal-oxide semiconductor circuits to make a micro-NIR-OLED projector (0.21 inch, 230,400 pixels). By actively driving the projector on a pixel by pixel and projecting their emission onto objects, we successfully scanned and sensed the surfaces in three dimensions with invisible NIR.

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Section: Resultsmentioning

confidence: 99%

Three-dimensional sensing of surfaces by projection of invisible electroluminescence from organic light-emitting diodes

Yamada,

Nakanotani,

Takagi

et al. 2024

Sci. Adv.

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“…In addition, a visual system that uses a curved microdisplay can reduce the system volume by 29.1% compared to a system that uses a flat microdisplay [53]. Fraunhofer Institute reported image sensor-integrated OLED microdisplays in 2009 [54][55][56][57][58][59]. As shown in Figure 8(c), the RGBW light emitters and photodetector were arranged in the same panel, displaying images and detecting light simultaneously.…”

Section: High-performance Oled Microdisplays For Small-form-factor Ar Devicesmentioning

confidence: 99%

“…In such applications, the microdisplay may not need to be full-color and highresolution and to have a high frame rate but may need to be small and with low power consumption. Vogel et al reported an ultra-low-power OLED microdisplay for wearable visualization [58][59][60]. A highly efficient green monochrome OLED device was designed and fabricated, which resulted in a maximum current efficiency of 47.7 cd/A at 1,000 cd/m 2 .…”

Section: High-performance Oled Microdisplays For Small-form-factor Ar Devicesmentioning

confidence: 99%

Recent progress of organic light-emitting diode microdisplays for augmented reality/virtual reality applications

Kang

Lee

2021

Journal of Information Display

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Microdisplays have been used in various applications such as beam projectors, view finders of digital cameras, projection TVs, night vision for military use, and augmented reality/virtual reality (AR/VR) devices. Organic light-emitting diode (OLED) microdisplays have attracted much attention as main displays of glass-type and head-mounted-type AR/VR devices due to their rich colors, high contrast ratio, fast response time, small form factor, and high resolution. This review investigates the device, process, pixel circuit, and panel technologies for OLED microdisplays. In addition, the technology status and issues of OLED microdisplays are discussed.

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“…Similar approaches are needed in the display industry. Currently, battery life in mobile devices is dominated by the active-matrix organic light-emitting diode (AMOLED) display; over half of the battery energy is either consumed by the display backplane 7 or lost due to battery voltage upconversion to the necessary supply voltages of the system. 8 The high leakage current of lowtemperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) and the relatively low field-effect mobility of indium gallium zinc oxide (IGZO) TFTs at present eliminate both as stand-alone solutions for variable image refresh rate display backplanes, where as low as 0.1 Hz of refresh rate is desired for "still" images and up to 240 Hz for dynamic images.…”

Section: Introductionmentioning

confidence: 99%

Innovations in thin‐film electronics for the new generation of displays

Zeumault,

Mendez,

Brewer

2024

J Soc Info Display

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Today's display industry faces transistor‐level challenges similar to those of complementary metal‐oxide semiconductor (CMOS) metal‐oxide semiconductor field‐effect transistors (MOSFETs) in the mid‐1990s. Learnings from MOSFETs inform the display industry's response to the limitations of silicon‐based thin‐film transistors (TFTs). Improvements sustaining Moore's Law drove the need to rethink MOSFET materials and structures. The display industry needs fundamental innovation at the device level. New thin‐film devices enable an inflection point in the use of displays, just as fin field‐effect transistor (FinFET) defined the inflection point in CMOS in the 2000s. This paper outlines two innovations in thin‐film device technology that offers improvement in image quality and power consumption of flat panel displays: amorphous metal gate TFTs (AMeTFTs) and amorphous metal nonlinear resistors (AMNRs). Linked through a single core material set based on mass‐producible, thin‐film amorphous metals, these two innovations create near‐ and long‐term roadmaps simplifying the production of high‐image quality, low‐power consumption displays on glass (now) and plastic (future). In particular, the field‐effect mobility of indium gallium zinc oxide (IGZO) AMeTFTs (55–72 cm2/Vs) exceeds that of IGZO TFTs developed by existing display manufacturers without the need for atomic layer deposition or vertical stacking of heterostructure semiconductor films, making AMeTFTs a natural choice for the new G8.5–G8.7 fabs targeting IGZO backplanes.

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52-2:Invited Paper: OLED Microdisplays - Enabling Advanced Near-to-Eye Displays, Sensors, and Beyond

Cited by 8 publications

References 7 publications

Three-dimensional sensing of surfaces by projection of invisible electroluminescence from organic light-emitting diodes

Three-dimensional sensing of surfaces by projection of invisible electroluminescence from organic light-emitting diodes

Recent progress of organic light-emitting diode microdisplays for augmented reality/virtual reality applications

Innovations in thin‐film electronics for the new generation of displays

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