Optimization of lamination process for flexible display using OCR

Kim, Young-Gyun; Park, Byung Min; Han, Kwan-Young

doi:10.1080/15421406.2021.1972212

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…The PSAs could removed by the artificial disassembly easily without leaving any residue on the surface of the LCD screen (Figure S8). The excellent disassembly ability of PSAs based on PUA1000-1.6-0.8 is beneficial to the potential repair or replacement of the component and thus increases the service time of the LCD module …”

Section: Resultsmentioning

confidence: 99%

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UV-Curable Polyurethane Acrylate Pressure-Sensitive Adhesives with High Optical Clarity for Full Lamination of TFT-LCD

Wang

Zhou

Chen

et al. 2023

ACS Appl. Polym. Mater.

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Optically clear pressure-sensitive adhesives (PSAs) face the challenges presented by a range of electronic and touch screen applications. Although many efforts have been made to manipulate the optical and adhesion properties of ultraviolet (UV)curable acrylate-based PSAs, further application and large-scale production are still limited owing to the intrinsically poor processability that stems from the large content of the high-vinylequivalent and low-viscosity acrylic monomers. Introducing a lowvinyl-equivalent and high-viscosity polyurethane acrylate (PUA) prepolymer into the formulation is a facile method to solve this issue without sacrificing the transparency. In this study, a series of PUA prepolymers are prepared to construct the model of PUA-co-2ethylhexyl acrylate (2EHA), denoted as poly(PUA-2EHA). The influence of PUA prepolymer architectures (average functionality and molecular features) on the optical and adhesion properties is elaborately discussed. The chemical cross-linking-induced enhancement of the haze values of PUA-based PSAs is investigated for the first time. Moreover, an improved and uniform bright image display without blemish, which is usually called the Mura defect-free image display in the industrial field, is obtained by using poly(PUA-2EHA) as the optically clear adhesive for full lamination of the thin-film transistor liquid crystal display (TFT-LCD) module. The laminated TFT-LCD module could be disassembled easily without leaving the residue on the screen. These results provide clear design guidelines to regulate the properties of PUA-based PSAs, which are especially valuable for the large-scale industrial production of UV-cured PSAs and facilitate the development of display technologies.

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Section: Resultsmentioning

confidence: 99%

“…The excellent disassembly ability of PSAs based on PUA1000-1.6-0.8 is beneficial to the potential repair or replacement of the component and thus increases the service time of the LCD module. 44…”

Section: Adhesion Properties Of Poly(pua-2ehamentioning

confidence: 99%