TFT substrate and method for manufacturing the same
View Patent ↗The present disclosure provides a TFT substrate and a method for manufacturing the same. The method includes: providing a silicon-wafer plate; forming first masking structures on the silicon-wafer plate and etching to form island structures; cutting the island structures layer by layer to form a silicon-wafer sub-plate; and attaching the silicon-wafer sub-plate on a substrate to form the TFT substrate. The implementation of the present disclosure may form the island structures on the substrate to improve the stability of the substrate during bending.
1. A method for manufacturing a TFT substrate, comprising:
providing a silicon-wafer plate;
forming a plurality of first masking structures on the silicon-wafer plate and etching the silicon-wafer plate via the first masking structures to form island structures;
cutting the island structures layer by layer to form a silicon-wafer sub-plate; and
adhering the silicon-wafer sub-plate on a substrate to form the TFT substrate.
2. The method of claim 1 , wherein the forming of the first masking structures on the silicon-wafer plate, comprises:
coating the silicon-wafer plate with a layer of photoresist material;
removing a portion of the photoresist material where the first masking structures are to be set;
forming a first masking layer on remaining portions of the photoresist material and on the silicon-wafer plate where the first masking structures are to be set;
removing portions of the first masking layer with an etching solution corresponding to the photoresist material, so as to form the first masking structures.
3. The method of claim 1 further comprising:
after forming the island structures, depositing a layer of second masking structures on the silicon-wafer plate and the island structures;
forming a first protection layer on a portion of the second masking structures of the silicon-wafer plate which are not on the island structures;
hardening the first protection layer;
removing other portions of the layer of second masking structures on the island structures with an etching solution of the layer of second masking structures;
forming on the silicon-wafer plate a second protection layer wrapping around the island structures; and
hardening the second protection layer.
4. The method of claim 3 , wherein the step of hardening the first protection layer comprises:
placing the first protection layer in a first temperature environment for a first predetermined time to harden the first protection layer;
the step of hardening the second protection layer comprises:
placing the second protection layer in a second temperature environment for a second predetermined time to harden the second protection layer.
5. The method of claim 3 , wherein the step of the cutting the island structures layer by layer comprises:
cutting layer by layer the island structures and the second protection layer to obtain a second protection sub-layer, wherein the second protection sub-layer has the silicon-wafer sub-plate wrapped inside.
6. The method of claim 5 , wherein a direction for cutting layer by layer the second protection layer wrapping around the island structures is parallel to an extending direction of the silicon-wafer plate.
7. The method of claim 5 , further comprising:
transferring the second protection sub-layer onto the substrate;
plasma etching the second protection sub-layer to expose the silicon-wafer sub-plate, to form the TFT substrate.
8. The method of claim 5 , further comprising:
placing the TFT substrate in a third temperature environment for a third predetermined time.
9. A method for manufacturing a TFT substrate, comprising:
providing a silicon-wafer plate;
forming a plurality of first masking structures on the silicon-wafer plate;
etching the silicon-wafer plate via the first masking structure to form island structures;
cutting the island structures into a plurality of silicon-wafer sub-plates;
adhering one of the silicon-wafer sub-plates onto a substrate to form the TFT substrate.
10. The method of claim 9 , wherein the forming of the first masking structures on the silicon-wafer plate comprises:
coating the silicon-wafer plate with a layer of photoresist material;
removing a portion of the photoresist material in an first area of the silicon-wafer plate;
forming a first masking layer on the photoresist material and the first area of the silicon-wafer plate;
removing the first masking layer on the photoresist material with an etching solution corresponding to the photoresist material to form the first masking structures.
11. The method of claim 9 , further comprising:
forming a main protection layer wrapping around the island structures after forming the island structures on the silicon-wafer plate;
wherein, the step of cutting the island structures comprises:
cutting the island structures and the main protection layer into a plurality of sub-layers with the silicon-wafer sub-plates inside.
12. The method of claim 11 , wherein the step of adhering one of the silicon-wafer sub-plates onto a substrate comprises:
adhering one of the sub-layers onto the substrate.
13. The method of claim 11 , wherein a direction for cutting the island structures and the main protection layer is parallel to an extending direction of the silicon-wafer plate.
14. The method of claim 11 , wherein before forming the main protection layer, the method further comprises:
depositing a layer of second masking structures on the silicon-wafer plate and the island structures;
forming a mask-protection layer on a portion of the second masking structures located on the silicon-wafer plate.
15. The method of claim 14 , wherein before cutting the island structures and the main protection layer, the method further comprises:
separating the island structures and the main protection layer from the mask-protection layer.
16. The method of claim 14 , further comprising:
placing the mask-protection layer in a first temperature environment for a first predetermined time, to harden the mask-protection layer; and
placing the main protection layer in a second temperature environment for a second predetermined time, to harden the main protection layer.
17. The method of claim 16 , further comprising:
placing the TFT substrate in a third temperature environment for a third predetermined time.