4‐3: <i>Late‐News Paper:</i> OLED Device Technologies for Automotive Application

Mori, Shigeru; Hamada, Keita; Hanashima, Hiromu; Shimoda, Masamichi; Yanase, Jiro; Matsueda, Yojiro; Tanabe, Hiroshi

doi:10.1002/sdtp.13797

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…An organic light-emitting device (OLED) produces light from molecular excitons which are formed through the recombination of oppositely charged carriers. OLEDs exhibit distinctive versatility in numerous photonic applications, such as lasing, optical communication, lightning, and displays, [1][2][3][4][5] among which display applications have been the most successful. [6][7][8][9][10] The advances of OLED displays set stringent conditions of key parameters, including the efficiency, operational lifetime, and color purity.…”

Section: Introductionmentioning

confidence: 99%

Molecular dyad exhibiting strong multi‐resonance blue fluorescence

Jhun,

You

2024

Bulletin Korean Chem Soc

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A multi‐resonance (MR) fluorophore exhibiting circularly polarized luminescence (CPL) holds a significant promise for enhancing the utility of organic light‐emitting devices. To meet this demand, we have devised molecular dyads having azaoxaborin MR emitters based on homochiral (R)‐ and (S)‐1,1′‐bi‐2‐naphthol. The synthesized 12,12′‐di‐tert‐butyl‐9,9′‐bi(8,8′‐dioxa‐4b,4′b‐diaza‐14b,14′b‐diborafluorantheno[1,2,3‐de]tetracene) products (TBNBOCz) exhibit strong blue fluorescence, with a remarkable 100% fluorescence quantum yield and an extremely narrow full width at half‐maximum of 22 nm. However, unexpectedly, TBNBOCz exhibits negligible electric circular dichroism and CPL activities. Chiroptical investigations into the reaction precursors reveals an occurrence of racemization in the borylation step. This result emphasizes the importance of understanding synthetic processes and their impact on the chiroptical properties.

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Section: Introductionmentioning

confidence: 99%

Molecular dyad exhibiting strong multi‐resonance blue fluorescence

Jhun,

You

2024

Bulletin Korean Chem Soc

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“…The steady increase in the efficiency and operating lifetime of Organic Light Emitting Devices (OLEDs) in the last three decades has been accomplished by the developments of new materials and functional layers which leads to increasingly complex structure, evolving from a twolayer stack 1 to at least seven or eight organic layers in commercial devices. 2,3 More layers and materials complicate both the manufacturing process and the deposition tool, thus increasing the manufacturing cost. Furthermore, additional interfaces can be weak points for device degradation.…”

Section: Introductionmentioning

confidence: 99%

Stack design of OLEDs with high performance and simplified device structures

Wang¹,

Pang²,

Cui³

et al. 2021

J Soc Info Display

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The increasingly complex layer structure of commercial Organic Light Emitting Devices (OLEDs) leads to higher manufacturing costs. In this paper, we demonstrate a simplified device structure with only two layers between the anode and the emissive layer, compared with the usual three or four layers in state‐of‐the‐art devices. The stack is designed so as to ensure efficient hole injection and transport. As a result, the devices achieve longer lifetime and higher efficiency, than the more complex structure, while maintaining equivalent chromaticity and a comparable operating voltage. Such a performance trend is observed in all three RGB colors, in both bottom and top emission devices, as well as in tandem devices. Fewer layers help cost‐effective mass production, and we demonstrate that such simplified device structure has a great potential in both OLED display and lighting applications.

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“…The steady increase in the efficiency and operating lifetime of OLEDs has been accomplished at the cost of an increasingly complex structure, evolving from a 2-layer stack [1] to at least 7 or 8 organic layers in commercial devices [2,3]. More layers and materials complicate both the manufacturing process and the deposition tool, increasing the manufacturing cost.…”

Section: Introductionmentioning

confidence: 99%

38.4: Invited Paper: Stack Design of OLEDs with High Performance and Simplified Device Structures

Wang¹,

Pang²,

Cui³

et al. 2021

Symp Digest of Tech Papers

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The increasingly complex layer structure of commercial OLEDs leads to higher manufacturing costs. In this paper, we demonstrate a simplified device structure with only two layers between the anode and the emissive layer, compared to the usual three or four layers in state‐of‐the‐art devices. The stack is designed so as to ensure efficient hole injection and transport. As a result, the devices achieved longer lifetime than the more complex structure, while maintaining equivalent chromaticity, efficiency and operating voltage. Fewer layers help realize cost‐effective mass production.

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4‐3: Late‐News Paper: OLED Device Technologies for Automotive Application

Abstract: We have demonstrated an OLED display with the high luminance of 1000 nit and long lifetime of LT80 > 1000 hours at 85°C for automotive application. Our display features a highly stable EIL/ETL structure at high temperature and low angular colorshift technology for red emission.

Cited by 8 publications

References 5 publications

Molecular dyad exhibiting strong multi‐resonance blue fluorescence

Molecular dyad exhibiting strong multi‐resonance blue fluorescence

Stack design of OLEDs with high performance and simplified device structures

38.4: Invited Paper: Stack Design of OLEDs with High Performance and Simplified Device Structures

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