Planar glass sealing structure and manufacturing method thereof

A manufacturing method of a planar glass sealing structure, wherein the manufacturing method of a planar glass sealing structure comprises steps of:

• providing a first glass substrate;
• disposing a frame-shaped insulating layer on a peripheral margin of an upper surface of the first glass substrate;
• providing a second glass substrate;
• coating a frame-shaped solid metal solder layer on a peripheral margin of a lower surface of the second glass substrate, wherein a coated area of the solid metal solder layer is corresponding to an installing area of the insulating layer;
• and the metal solder layer is coated by:
• grinding a metal solder into powder and then using a powder metallurgy method to form a solid sinter of the metal solder with a certain width and height on the sealing glass;
• or
• grinding a metal solder into powder and then adding the powder into an organic solvent with a certain viscosity to compound it as a paste with a certain viscosity, and coating the paste on the sealing glass and then evaporating the organic solvent, so as to form a solid metal solder film with a certain width and height;
• correspondingly assembling the lower surface of the second glass substrate to the upper surface of the first glass substrate, wherein the metal solder layer is pressed onto the insulating layer;
• and
• heating to melt the metal solder layer to be respectively soldered with the second glass substrate thereabove and the first glass substrate thereunder, so as to form a metal sealing frame, and the first glass substrate and the second glass substrate have a fixed gap therebetween kept by the metal sealing frame, and an inner space thereof is kept in a sealed condition;
• wherein the solid metal solder layer is formed prior to the step of assembling the lower surface of the second glass substrate to the upper surface of the first glass substrate and the step of heating to melt the metal solder layer;
• wherein the certain width and height are maintained after the step of assembling the lower surface of the second glass substrate to the upper surface of the first glass substrate.