Flexible substrate, method of manufacturing display substrate, and method of manufacturing display panel
View Patent ↗A flexible substrate, a method of manufacturing a display substrate, and a method of manufacturing a display panel. A spinning device is filled with a source solution, and a carrier substrate is arranged such that the spinning device faces the carrier substrate. An electric field is formed between the spinning device and the carrier substrate by supplying a power to the spinning device and the carrier substrate, and a nano-fiber is formed by spraying the source solution toward the carrier substrate. A flexible substrate is formed on the carrier substrate by coating a polymer resin on the nano-fiber, a plurality of display cells are formed on the flexible substrate, and then a display substrate is formed by separating the carrier substrate from the flexible substrate.
1. A method of manufacturing a display substrate, the method comprising:
filling a spinning device with a source solution;
disposing a carrier substrate such that the spinning device faces the carrier substrate;
forming an electric field between the spinning device and the carrier substrate;
forming a nano-fiber by spraying the source solution toward the carrier substrate;
forming a flexible substrate on the carrier substrate by coating a polymer resin on the nano-fiber;
forming a plurality of display cells on the flexible substrate; and
forming a display substrate by separating the carrier substrate from the flexible substrate.
2. The method of claim 1 , further comprising forming an adhesive layer on the carrier substrate.
3. The method of claim 1 , wherein the nano-fiber has a shape of a cubic net.
4. The method of claim 1 , further comprising supplying power to the spinning device at a voltage level of about 1 KV to about one-hundred thousand KV, and grounding the carrier substrate.
5. The method of claim 4 , wherein the spinning device comprises:
a syringe filled with the source solution;
a pressing unit coupled with a first end of the syringe to press the source solution; and
a nozzle coupled with a second end of the syringe through which the source solution flows, and wherein the power is applied via the syringe.
6. The method of claim 1 , wherein the source solution is a polymer solution including one of nylon, polyimide, aramide, and polyester.
7. The method of claim 6 , further comprising curing the nano-fiber by heating the nano-fiber, after forming the nano-fiber.
8. The method of claim 1 , wherein the source solution comprises one of silicon oxide (SiOx) and titanium oxide (TiOx).
9. The method of claim 8 , wherein the source solution has one of sol and gel states.
10. The method of claim 8 , further comprising:
sintering the nano-fiber by heating the nano-fiber; and
treating a surface of the nano-fiber using siloxane, after forming the nano-fiber.
11. The method of claim 1 , wherein forming of flexible substrate further comprises curing the polymer resin.
12. The method of claim 1 , wherein the polymer resin comprises one of an epoxy-based material and an acrylic-based material.
13. The method of claim 1 , wherein each of the display cells comprises a thin film transistor and a pixel electrode.
14. The method of claim 1 , wherein each of the display cells comprises a color filter and a common electrode.
15. The method of claim 1 , further comprising forming a plurality of unit display substrates by dividing the display cells, after forming the display substrate.
16. A method of manufacturing a display substrate, the method comprising:
filling a spinning device with a source solution;
disposing a roller such that the roller faces the spinning device;
generating an electric field between the spinning device and the roller;
forming a nano-fiber by rotating the roller and spraying the source solution toward the rotating roller;
forming a flexible substrate on the roller by penetrating the nano-fiber into a polymer resin;
separating the flexible substrate from the roller;
coupling the flexible substrate with a carrier substrate;
forming a plurality of display cells on the flexible substrate; and
forming a display substrate by separating the carrier substrate from the flexible substrate.
17. The method of claim 16 , wherein each of the display cells comprises a thin film transistor and a pixel electrode.
18. The method of claim 16 , wherein each of the display cells comprises a color filter and a common electrode.
19. The method of claim 16 , further comprising forming a plurality of unit display substrates by dividing the display cells, after forming the display substrate.
20. A method of manufacturing a display panel, the method comprising:
preparing first and second substrates bonded with carrier substrates, respectively;
forming a plurality of thin film transistors and a plurality of color filters on the first and second substrates, respectively; and
coupling the first substrate with the second substrate while interposing liquid crystal between the first and second substrates, wherein preparing one of the first and second substrates comprises:
filling a spinning device with a source solution;
disposing a carrier substrate such that the spinning device faces the carrier substrate;
forming an electric field between the spinning device and the carrier substrate;
forming a nano-fiber by spraying the source solution toward the carrier substrate; and
forming a flexible substrate on the carrier substrate by coating a polymer resin on the nano-fiber.
21. The method of claim 20 , wherein the nano-fiber has a shape of a cubic net.
22. The method of claim 20 , further comprising forming an adhesive layer on the carrier substrate.
23. The method of claim 20 , further comprising:
removing the carrier substrate from the flexible substrate;
dividing the first and second substrates into a plurality of unit panels; and
connecting a driving device to the unit panel, after coupling the first substrate with the second substrate.