Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive
The inkjet printing process of liquid optically clear adhesive film often leads to the phenomenon of end protrusions, which cause bubbles during subsequent bonding and encapsulation processes or localized Mura defects. To gain a deeper understanding of the mechanism behind the formation of protrusio...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0221869 |
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| author | Yahao Ren Wei Song Yang Zhang Lixin Wang Zhuli Liu Shaoqi Wang Zunlong Jin Changliang Wang |
| author_facet | Yahao Ren Wei Song Yang Zhang Lixin Wang Zhuli Liu Shaoqi Wang Zunlong Jin Changliang Wang |
| author_sort | Yahao Ren |
| collection | DOAJ |
| description | The inkjet printing process of liquid optically clear adhesive film often leads to the phenomenon of end protrusions, which cause bubbles during subsequent bonding and encapsulation processes or localized Mura defects. To gain a deeper understanding of the mechanism behind the formation of protrusions during film retracts, we derived a dynamic model for the formation of end protrusions in the film. This research also simulated the coalescence of multiple droplets into a film line, including protrusion formation, using the volume of fluid method. The simulation results were compared with theoretical calculations, revealing that the theoretical values were approximately twice as large as the simulated ones. We discovered that the formation of protrusions is the result of the interaction between surface tension and internal forces within the liquid film. During this process, the maximum height of the film line exhibits a positive correlation with the power of time. Finally, the influence of contact angle on the uniformity of film thickness was also explored. It was found that a smaller contact angle can suppress the occurrence of protrusions, leading to a significant improvement in the uniformity of film thickness. |
| format | Article |
| id | doaj-art-a67bd64bd86049cdadab96e550de2c6f |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-a67bd64bd86049cdadab96e550de2c6f2025-02-03T16:40:42ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015031015031-1110.1063/5.0221869Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesiveYahao Ren0Wei Song1Yang Zhang2Lixin Wang3Zhuli Liu4Shaoqi Wang5Zunlong Jin6Changliang Wang7School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSuzhou UB Precision Co., Ltd., Suzhou 215028, ChinaSuzhou UB Precision Co., Ltd., Suzhou 215028, ChinaSchool of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, ChinaThe inkjet printing process of liquid optically clear adhesive film often leads to the phenomenon of end protrusions, which cause bubbles during subsequent bonding and encapsulation processes or localized Mura defects. To gain a deeper understanding of the mechanism behind the formation of protrusions during film retracts, we derived a dynamic model for the formation of end protrusions in the film. This research also simulated the coalescence of multiple droplets into a film line, including protrusion formation, using the volume of fluid method. The simulation results were compared with theoretical calculations, revealing that the theoretical values were approximately twice as large as the simulated ones. We discovered that the formation of protrusions is the result of the interaction between surface tension and internal forces within the liquid film. During this process, the maximum height of the film line exhibits a positive correlation with the power of time. Finally, the influence of contact angle on the uniformity of film thickness was also explored. It was found that a smaller contact angle can suppress the occurrence of protrusions, leading to a significant improvement in the uniformity of film thickness.http://dx.doi.org/10.1063/5.0221869 |
| spellingShingle | Yahao Ren Wei Song Yang Zhang Lixin Wang Zhuli Liu Shaoqi Wang Zunlong Jin Changliang Wang Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive AIP Advances |
| title | Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| title_full | Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| title_fullStr | Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| title_full_unstemmed | Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| title_short | Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| title_sort | investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive |
| url | http://dx.doi.org/10.1063/5.0221869 |
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