Room Temperature Bonding and Debonding of Ultra-Thin Glass Substrates for Fabrication of LCD

In this study we established a new process of the bonding and debonidng of the glasses for the handling of the ultra thin glass substrates. On the basis of the Surface Activated Bonding (SAB) method, the glasses were bonded using the Si and Fe intermediate layers at room temperature. The bond strength was evaluated before and after heating at 450°C, and the results showed the bond strength can be controllable by the bonding conditions such as the Si deposition, the ion beam irradiation and the bonding ambience. Additionally, the SAM images and the XPS analyses indicated that the voids in the bonding interfaces affected on the easy lift-off process without the residue on the glass surfaces. The proposed method would be an alternative of the temporary bonding method of the glasses in the fabrication process of the display devices.