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Optical bonding process of flat panel displays and their critical-to-quality factors

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Abstract

Automotive and display manufacturers have been working on several products and production processes to allow automakers to produce the best display systems possible at a competitive cost. One of the production processes that has been receiving attention is the Optical Bonding process. With this process, displays see significant improvements regarding display contrast, enhanced visibility, and readability, as well as other benefits that contribute greatly to display’s durability, and reduce volume and weight. However, optical bonding processes are complex processes, and although they may variate according to several factors, including the type of adhesive, the desired display assembly stack to be built and its requirements; each optical bonding process encompasses differences regarding the number of steps to be executed and how some of those steps occur. The purpose of this paper is not to describe a specific process, but to show the main differences between the main optical bonding processes for flat panel displays assembly stack with cover plates, their similarities and some possible variations, and trends, by trying to identify the main critical-to-quality factors of each process step, expecting to contribute to a better overall understanding of optical bonding process. And although the work focuses on exploring production processes of flat panel displays assembly stack, mainly (but not limited) for to the automotive industry, it is also recognized that a combination of different processes and steps can be done when developing more complex and innovative products, such as free-form and curved displays.

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Notes

  1. Figure accessed in December 2019 at https://www.gminsights.com/pressrelease/automotive-display-market

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Funding

This work has been supported by FCT (Fundação para a Ciência e Tecnologia) within the R&D Units Project Scope: UIDB/00319/2020, and the doctoral scholarship grant: PD/BDE/142911/2018.

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Authors and Affiliations

  1. School of Engineering, ALGORITMI Research Centre, Industrial Engineering and Management (IEM) R&D Group, University of Minho, 4710-057, Braga, Portugal

    Rui Oliveira & Paulo Sampaio

  2. IPC – Institute for Polymers and Composites, Department of Polymer Engineering, University of Minho, 4804-533, Guimarães, Portugal

    Júlio Viana

  3. LASI (Intelligent Systems Associated Laboratory), University of Minho, 4800-058, Guimarães, Portugal

    Rui Oliveira & Júlio Viana

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  1. Rui Oliveira
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All authors contributed to the study conception and design. Original draft conceptualization, writing, and initial editing were performed by Rui Oliveira. Work supervision, comments, final editing, and final reviews of the manuscript were performed by Júlio Viana and Paulo Sampaio. All authors have approved the final manuscript version.

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Oliveira, R., Viana, J. & Sampaio, P. Optical bonding process of flat panel displays and their critical-to-quality factors. Int J Adv Manuf Technol 125, 5631–5650 (2023). https://doi.org/10.1007/s00170-023-10810-w

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  • DOI: https://doi.org/10.1007/s00170-023-10810-w

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