Ink-Jet Printing towards Ultra-High Resolution: A Review

Qiu, Xinbo; Gong, Xun; Zhang, Xiaoyu; Zheng, Weitao

doi:10.3390/coatings12121893

Cited by 12 publications

(7 citation statements)

References 78 publications

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“…Inkjet printing (IJP) is a promising strategy for high-volume preparation of flexible sensors as a result of its lower cost and higher raw material utilization. − Silver nanoparticle (AgNP) inks demonstrate merits in conductivity, surface effect, and quantum size effect, making them popular components for functional coatings and catalytic material fabrication of flexible sensors, medical films, and fuel catalysts. − …”

Section: Introductionmentioning

confidence: 99%

Deep-Learning-Guided Evaluation Method for the High-Volume Preparation of Flexible Sensors Based on Inkjet Printing

Yao,

Wang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Flexible sensors for application in various industries, including biomedicine and wearable electronics, are frequently made using silver nanoparticle (AgNP) inks and inkjet printing (IJP) technology. Inkjet-printed flexible electronic devices are made up of many printed lines that run parallel to each other, and the surface morphology of the printed lines and the interline state directly impact the electrical conductivity of the electronic devices. This paper describes the experimental setup for IJP, the definition of print line characteristics, and common unavoidable defects. Conductivity and physical defects are considered in defining the print line quality assessment. In addition, two prediction models of flexible sensors before batch printing and a model for detecting defects after printing are provided. The predictive models can guide actions, leading to a print success rate of over 80%. We build the defect detection model using a neural architecture search because manually fine-tuning neural networks for reference is challenging. Finally, a target detection model with a mAP@0.5 of 81.2% is built in just 0.77 graphics processing unit (GPU) days. The model takes only 4.6 ms to detect an image, satisfying the real-time monitoring needs. At the same time, an accuracy of 95.5% can be achieved in the test data set. This work provides a new idea for the high-volume preparation of flexible sensors.

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Section: Introductionmentioning

confidence: 99%

Deep-Learning-Guided Evaluation Method for the High-Volume Preparation of Flexible Sensors Based on Inkjet Printing

Yao,

Wang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…To produce high-resolution pixel patterns, various studies have been done. 10,11 Among them, it is important to achieve inkjet printing with high drop position accuracy and repeatability. And as the size of the inkjet table increases, the accuracy of the table decreases.…”

Section: Introductionmentioning

confidence: 99%

“…So far, we could cover about 110 ppi, but when the panel size is smaller, it requires a higher resolution. To produce high‐resolution pixel patterns, various studies have been done 10,11 . Among them, it is important to achieve inkjet printing with high drop position accuracy and repeatability.…”

Section: Introductionmentioning

confidence: 99%

Mura‐free G8.5 220ppi inkjet printing technology for OLED and QLED display panels

Yoshida,

Nakatani,

Inoue

et al. 2024

J Soc Info Display

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This paper reported on the development of a Mura‐free and high precise printing to realize high‐resolution organic light‐emitting diode and quantum dot light‐emitting diode display panels with a G8.5 glass substrate. To realize Mura‐free printing, we developed the single‐path print line head and the new pixel volume adjustment system with a pixel volume variation of ±0.8%. And to realize high precise printing, we developed the G8.5 table system that compensated for the drop position by changing the jetting time of each nozzle. And verified a drop position accuracy of ±2.1 μm. By combining these technologies, we achieved Mura‐free 220‐ppi printing on the G8.5 table.

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“…In addition, wet etching generates large amounts of chemical waste that are difficult to manage for smaller businesses. Therefore, new patterning methods, such as direct laser writing, [3][4][5][6] inkjet printing, [7][8][9] screen printing, [10][11][12] and soft lithography, [13,14] are required and continuously researched. A promising alternative to photolithography is direct laser patterning technology, which has been extensively studied over the past few decades.…”

Section: Introductionmentioning

confidence: 99%

Roll‐to‐Roll Patterning of Indium‐Tin‐Oxide Electrodes Using a Low‐Cost Laser‐Marking Machine

Chakraborty

Ahn

2023

Adv Eng Mater

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This study aims to explore the optimal process conditions for patterning indium‐tin‐oxide electrodes with polyethylene terephthalate films using a low‐cost laser‐marking machine equipped with an F‐theta lens. The feasibility of applying this equipment in roll‐to‐roll (R2R) processes and flexible sensors is also investigated. Moreover, the study involves analyzing the laser characteristics, precision, and focal length of the equipment, as well as adjusting the laser power and focal length to achieve the desired line width without damaging the substrate. The proposed equipment and an R2R patterning method are applied to a pressure‐leak sensor that employs a surfactant as the sensing material. The findings show that the low‐cost laser‐marking machine can be used for flexible sensor research and can support a fast, cost‐effective patterning method, making it possible to develop new sensors quickly.

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Ink-Jet Printing towards Ultra-High Resolution: A Review

Cited by 12 publications

References 78 publications

Deep-Learning-Guided Evaluation Method for the High-Volume Preparation of Flexible Sensors Based on Inkjet Printing

Deep-Learning-Guided Evaluation Method for the High-Volume Preparation of Flexible Sensors Based on Inkjet Printing

Mura‐free G8.5 220ppi inkjet printing technology for OLED and QLED display panels

Roll‐to‐Roll Patterning of Indium‐Tin‐Oxide Electrodes Using a Low‐Cost Laser‐Marking Machine

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