59‐3: Ultra‐Precise Printing of Micrometer‐Size Interconnectors for High‐Resolution MicroLED Displays

Wiatrowska, Aneta; Kowalczewski, Piotr; Fiączyk, Karolina; Witczak, Łukasz; Gadzalińska, Jolanta; Łysień, Mateusz; Schneider, L.; Kosior, Łukasz; Granek, F.

doi:10.1002/sdtp.14812

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…The UPD technology offers some significant solutions to these challenges (4,5). Firstly, it allows for the precise deposition of conductive and non-conductive inks at the microscale, enabling accurate alignment of Micro-LED components.…”

Section: Challenges In Micro-led Fabricationmentioning

confidence: 99%

84‐2: Invited Paper: High‐Resolution Additive Manufacturing in the Fabrication of Micro‐LED Displays

Granek,

Grądzka-Kurzaj,

Gadzalińska

et al. 2024

Symp Digest of Tech Papers

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This paper demonstrates the use of Ultra‐Precise Dispensing, a high‐resolution additive manufacturing method, in the fabrication of Micro‐LED displays. We demonstrate advancements in achieving ultra‐small feature sizes, high aspect ratios, and the ability to print on complex substrates. The paper presents a number of use cases, such as interconnections on complex topographies, edge printing, microvias filling, and microbumps dispensing. It summarizes the relevance of this technology for Micro‐LED displays fabrication and discusses the prospective future developments in the field of additive manufacturing for display fabrication.

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Section: Challenges In Micro-led Fabricationmentioning

confidence: 99%

84‐2: Invited Paper: High‐Resolution Additive Manufacturing in the Fabrication of Micro‐LED Displays

Granek,

Grądzka-Kurzaj,

Gadzalińska

et al. 2024

Symp Digest of Tech Papers

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“…Such a process would be especially interesting if the deposition of the Ag-grid electrode would be performed by a printing technology as this significantly reduces the production costs and simplifies the whole deposition process in contrast to standard vacuum deposition processes, which involve complex fabrication steps. Among various printing methods, the most promising printing technology is a novel ultraprecise deposition (UPD) technology provided by XTPL. − UPD allows a direct deposition of highly concentrated silver inks (even 82 wt % metal content) on complex substrates. The printed feature size is as small as 1 μm with an electrical conductivity of up to 45% bulk silver.…”

Section: Introductionmentioning

confidence: 99%

Flexible Quantum-Dot Light-Emitting Diodes Using Embedded Silver Mesh Transparent Electrodes Manufactured by an Ultraprecise Deposition Method

Witczak,

Chrzanowski,

Sitarek

et al. 2023

ACS Omega

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Transparent conductive electrodes (TCEs) fabricated onto flexible substrates are crucial parts of organic-light-emitting diodes (OLEDs), which are vastly utilized for display and lightning applications. Indium tin oxide (ITO), which is so far the most popular material for transparent and conductive electrodes, is found to be an unsuitable candidate for flexible devices mostly due to its brittleness. Here, we present a novel approach for the fabrication of transparent, conductive, and flexible electrodes for optoelectronic applications made of silver metal mesh by an ultraprecise deposition (UPD) method. The fabricated mesh exhibits an 80% (λ = 550 nm) optical transmittance and a sheet resistance of 11 Ω/sq. The Ag-mesh embedded into the polymer is implemented as an anode for a quantum-dot light-emitting diode (QLED) in order to assess its performance. The fabricated QLED is characterized by the maximum external quantum efficiency (EQE) of 2% and a current efficiency (CE) of 6 cd/A, reaching the maximum luminance (L) of 3200 cd/m 2 at a current density of 100 mA/cm 2 . This method shows a fast and relatively simple approach to fabricate optoelectronic devices without the need for special treatment and sophisticated equipment.

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“…This minimum [2], [3] and ink jet printing [4] technologies. Previous work in UPD has dealt with single lines that were used for electrical connections at low frequencies of operation [1], [5], [6], [7], [8]. At radio frequencies, however, specialized transmission line geometries are required for lowloss, confined transmission of signals.…”

Section: Introductionmentioning

confidence: 99%

Ultraprecise Printing of D-Band Transmission Lines

Roemhild,

Gramlich,

Baur

et al. 2023

IEEE Microw. Wireless Tech. Lett.

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59‐3: Ultra‐Precise Printing of Micrometer‐Size Interconnectors for High‐Resolution MicroLED Displays

Cited by 5 publications

References 9 publications

84‐2: Invited Paper: High‐Resolution Additive Manufacturing in the Fabrication of Micro‐LED Displays

84‐2: Invited Paper: High‐Resolution Additive Manufacturing in the Fabrication of Micro‐LED Displays

Flexible Quantum-Dot Light-Emitting Diodes Using Embedded Silver Mesh Transparent Electrodes Manufactured by an Ultraprecise Deposition Method

Ultraprecise Printing of D-Band Transmission Lines

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