Flat display panel sealing apparatus and method of the same
View Patent ↗A flat display panel sealing device that can prevent separation of a sealant by applying pressure to a first substrate and a second substrate with the sealant therebetween is disclosed. While the pressure is applied, light is irradiated to the sealant, whereby the first and second substrates are sealed together.
1. A flat display panel sealing device comprising: a stage configured to support a first substrate and a second substrate that are to be bonded together by a sealant between the first and second substrates; a mask facing the stage and configured to transmit radiated light to the sealant; and a chamber configured to receive a pressure fluid to apply pressure to the first and second substrates, wherein the pressure fluid is pressurized to a pressure greater than a pressure external to the device.
2. The flat display panel sealing device of claim 1 , comprising a pressure hole that supplies the pressure fluid into the chamber.
3. The flat display panel sealing device of claim 2 , wherein the pressure hole is formed in at least one side of the stage outside an area that faces the first and second substrates and the chamber.
4. The flat display panel sealing device of claim 2 , wherein the stage comprises a first O-ring groove for a first O-ring that seals the chamber.
5. The flat display panel sealing device of claim 2 , comprising a first control valve that is connected to the pressure hole and controls supply of the pressure fluid.
6. The flat display panel sealing device of claim 1 , wherein the chamber is between the mask and the stage.
7. The flat display panel sealing device of claim 1 , wherein the stage comprises a negative pressure hole configured to form a negative pressure at the first substrate.
8. The flat display panel sealing device of claim 7 , wherein the stage comprises a plurality of pressure holes.
9. The flat display panel sealing device of claim 8 , wherein the plurality of negative pressure holes are arranged in a lattice format.
10. The flat display panel sealing device of claim 7 , wherein the stage comprises a second O-ring groove for a second O-ring that seals the chamber between the first substrate and the stage.
11. The flat display panel sealing device of claim 7 , comprising a second control valve that is connected to the negative pressure hole and is configured to control the negative pressure.
12. The flat display panel sealing device of claim 1 , wherein the mask is fixed to the chamber by a holder, and the mask has a third O-ring groove for a third O-ring that seals the chamber between the mask and the holder.
13. The flat display panel sealing device of claim 1 , wherein the mask exposes the cell sealant to the light, and further comprises a reflection film that is formed in an area corresponding to an area other than an area of the sealant.
14. The flat display panel sealing device of claim 1 , wherein the flat display panel comprises an organic light emitting diode (OLED) display.
15. The flat display panel sealing device of claim 1 , wherein the sealant comprises a glass frit.
16. The flat display panel sealing device of claim 1 , wherein the light is formed by a laser beam.