Abstract
Recent display technology has changed substantially from flat-type displays to bended displays. As a result, the lamination process for bonding the panel substrates and bended window glass has become difficult due to the changes in display shape, and the use of optically clear adhesive (OCA) makes it impossible to rework defective substrates due to residue problems. Therefore, it is necessary to research and develop a substrate-surface treatment that maintains the initial adhesion and is reusable via the complete removal of impurities during delamination in order to enable rework. In this paper, the possibility of maintaining adhesive force and reusing substrates was confirmed through the surface treatment of substrates and OCA using various materials. We found that a surface coating and a cooling treatment of additional substrates completely removed the impurities that remained on the substrates during reworking. These results could contribute to improving lamination-process technology and the productivity of the various forms of next-generation displays that are currently under development.
Highlights
Recent display technology has changed substantially from flat-type displays to bended displays
The goal of this study was to optimize the adhesion and improve the rework characteristics This was achieved by controlling the surface energy of the bended-window-glass substrates
In thisIn paper, we presented a study on substrate-surface treatments
Summary
Recent display technology has changed substantially from flat-type displays to bended displays. The lamination process for bonding the panel substrates and bended window glass has become difficult due to the changes in display shape, and the use of optically clear adhesive (OCA) makes it impossible to rework defective substrates due to residue problems. We found that a surface coating and a cooling treatment of additional substrates completely removed the impurities that remained on the substrates during reworking. These results could contribute to improving lamination-process technology and the productivity of the various forms of next-generation displays that are currently under development. The fluorine [32–35] and chlorosilane organic material [36,37] containing fluorine elements were surface treated in the bended window glass before the existing
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