Patent ID: 8895362
Filing Date: 2014-11-25
Classification: B81C,G02B,H01L

Abstract:
1. A method, comprising: disposing raw bonding material onto a first surface of one or both of first and second glass material layers, wherein: (i) the disposition is carried out using screen printing to produce a pattern of the raw bonding material onto the first and/or second glass material layers, and (ii) the raw bonding material is formed from one of glass frit material, ceramic frit material, glass ceramic frit material, and metal paste; heating the first and/or second glass material layers on which the pattern has been disposed to a temperature sufficient to burn out organic materials that may be present; further heating the first and/or second glass material layers in excess of a melting temperature of the raw bonding material such that the raw bonding material melts and becomes glazed to the first and/or second glass material layers; pressing the first and second glass material layers together such that: (i) the pattern or patterns of bonding material is disposed therebetween, and (ii) when respective patterns of melted bonding material are disposed on the first and second glass material layers, aligning the respective patterns of melted bonding material in registration with one another prior to the pressing step; and further heating the first and second glass material layers, while maintaining the pressing action, to re-melt the bonding material and bond the first and second glass material layers together, wherein a resultant flatness of the bonded first and second glass material layers is one of: (i) about 0.75 μm per mm or better; and (ii) about 0.4 μm per mm or better.