Method for manufacturing a substrate for a flat panel display including forming grooves in a surface
View Patent ↗A method of manufacturing a substrate for a flat panel display includes forming grooves in a bottom surface of a float glass substrate by a subtractive process to form barrier ribs. The barrier ribs include the protrusions remaining between the respective grooves.
1. A method of manufacturing a substrate for a flat panel display, the method comprising:
selecting a bottom surface, which is a side having an imprint of contact with molten tin, of a float glass substrate; and
forming a plurality of grooves in the selected surface of the float glass substrate by a subtractive process forming barrier ribs, the barrier ribs comprising protrusions remaining between the respective grooves.
2. A method of manufacturing a substrate for a flat panel display according to claim 1 , wherein the subtractive process is a sandblast process.
3. A method of manufacturing a substrate for a flat panel display according to claim 1 , wherein the subtractive process is a chemical etching process using an acid etchant.
4. A method of manufacturing a substrate for a flat panel display according to claims 1 , further comprising smoothing bottoms of the grooves formed in the selected surface of the float glass substrate, the smoothed bottoms of the grooves formed electrode formation surfaces.
5. A method of manufacturing a substrate for a flat panel display according to claim 4 , wherein the smoothing the bottoms of the grooves comprises partially melting the surfaces of the grooves by laser irradiation.
6. A method of manufacturing a substrate for a flat panel display according to claim 4 , wherein the smoothing the bottoms of the grooves comprises sandblasting with an abrasive having a particle diameter decreasing surface irregularities of the grooves, or an abrasive composed of a material cut off from the substrate by forming the grooves, or both.
7. A method of manufacturing a substrate for a flat panel display according to claim 4 , wherein the bottoms of the grooves comprises polishing the inside surfaces of the grooves with a dicing saw.
8. A method of manufacturing a substrate for a flat panel display according to claim 4 , wherein the bottoms of the grooves comprises:
coating a silicon-containing organic compound solution on the inside surfaces of the grooves, and
heating the coatings forming silicon dioxide films.
9. A method of manufacturing a substrate for a flat panel display according to claim 4 , further comprising
forming electrodes on the smoothed bottom surface by using a photolithographic process.
10. A method of manufacturing a substrate for a flat panel display, the method comprising:
forming a plurality of grooves in the bottom surface of a float glass substrate by a subtractive process to forming barrier ribs comprising protrusions remaining between the respective grooves, and
forming electrodes on the bottoms of the grooves by an ink-jet process or dispensing process.
11. A method of manufacturing a substrate for a flat panel display according to claim 10 , further comprising firing the substrate at a firing temperature 40° C. higher than a softening point of the low-melting glass in a material forming the electrodes.
12. A method of manufacturing a substrate for a flat panel display, the method comprising forming a plurality of grooves directly on a bottom surface of a float glass substrate, wherein protrusions remaining between respective grooves form barrier ribs.
13. The method of manufacturing a substrate for a flat panel display, according to claim 12 , wherein electrodes formed in the grooves are not in contact with the bottom surface.