Session and scheduling information are listed below. Select a session from the list and press "Go" to view the abstracts for that session.
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Session
92
: MicroLED Displays |
Emissive, Micro-LED, and Quantum-Dot Displays
; Digital Signage (Indoor and Outdoor Displays)
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Friday, May 17 / 10:40 AM - 12:20 PM / San Jose Convention Center, LL21CD
Chair:
John Van Derlofske, 3M, Saint Paul, MN
Co-Chair:
Jean-Jacques Drolet, Osram Opto Semiconductors, Regensburg, Germany
92.1 - Invited Paper: Wide-Color-Gamut and Stable MicroLED Displays Using UV-Pumped Cd-Free Quantum Dots (10:40 AM - 11:00 AM)
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Mingwei Zhu, Sivapackia Ganapathiappan, Zhiyong Li, Nag Patibandla
Applied Materials, Inc. Santa Clara CA US
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Hou Ng
Applied Materials, Inc Santa Clara CA US
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A 1.37-in. microLED display smart-watch active-matrix display prototype is presented. It is based on UV-A emission coupled with ink-jetted Cd-free RGB QDs. Stability of QDs is investigated under the UV excitation in different conditions, and is optimized. Display also shows a high uniform Lambertian emission pattern with minimal color shift at all viewing angles.
92.2 - What Type of MicroLED: Flip Chip, Vertical, or Lateral? (11:00 AM - 11:20 AM)
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Reza Chaji, Kevin Cheng, Hossien Zamani
VueReal Inc. Waterloo ON Canada
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MicroLED displays can enable new manufacturing processes where the race to larger substrates is not required, and can be produced at different places; e.g. OEMs, vendors, hardware developers, leading to a distributed supply chain.
92.3 - 1.63-in. 403-ppi Full-Color Active-Matrix LTPS MicroLED Display (11:20 AM - 11:40 AM)
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Yijie Wang, Zemin Chen, Liwei Zhang, Sitao Huo, Tianyi Wu
Tianma Advanced Display Technology Institute (Xiamen) Co., Ltd. Xiamen China
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The authors achieve a 1.63-in. 403-ppi full-color active-matrix microLED display using an LTPS backplane, which possesses the property of >600 Cd/m2 brightness, and >115% NTSC. At present, it is the highest ppi product with an LTPS-based microLED display in the world.
92.4 - Invited Paper: MicroLED Display Technology Entering Mass Production: Opportunities and Challenges in the New Era (11:40 AM - 12:00 PM)
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Ying-Tsang Liu, Tzu-Yang Lin, Yun-Li Li
PlayNitride Inc. Miaoli Taiwan Roc
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MicroLED display is an innovative display technology with high brightness, wide color gamut, high aperture ratio, and excellent reliability. It can be used in traditional display applications and can also be applied to various innovative display technologies, such as AR glasses, transparent displays, electric vehicles, or other new use cases.
92.5 Late-News Paper: Development of a Full-Color MicroLED Display Utilizing Novel Simultaneous Transfer and Bonding (SITRAB) Process and SITRAB Film Technology (12:00 PM - 12:20 PM)
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Jiho Joo, Gwang-Mun Choi, Jungho Shin, Chanmi Lee, Yong-Sung Eom, Ki-Seok Jang, Jin-hyuk Oh, Ji-Eun Jung, Ga-Eun Lee, Kwang-Seong Choi
Electronics and Telecommunications Research Institute Daejeon South Korea
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The authors introduce a full-color microLED display utilizing a simultaneous transfer and bonding (SITRAB) process and a novel SITRAB film. The microLED display involves microLED chips measuring 35 × 20µm2, arranged into a display resolution of 32 × 32, with a pixel pitch of 324 µm and a subpixel pitch of 50 µm. The microLED display utilizes a glass substrate and aluminum wiring. A key innovation in the process is the use of indium solder for low-temperature bonding, significantly enhancing the assembly process's efficiency and reliability. The SITRAB film, a material specially developed by the authors, removes the oxidation layer from indium solder, facilitating easier reflow and effective bonding between the microLEDs and the electrodes. Post-curing of this film further enhances the shear strength of the microLEDs. The authors record an average shear strength of approximately 5.45gf (about 32MPa) for the bonded microLEDs, significantly surpassing the tensile strength of indium. This advancement not only demonstrates the feasibility of the SITRAB process and the new film material in creating high-quality microLED displays but also significantly boosts the reliability of these displays.