Display device having a plurality of bank structures
The embodiment provides a display device including an array substrate, an opposite substrate, a plurality of micro light-emitting diodes and a plurality of bank structures. The opposite substrate is disposed opposite to the array substrate. The micro light-emitting diodes are arranged in an array on the array substrate, wherein the micro light-emitting diodes are electrically connected to the array substrate. The bank structures are located between the array substrate and the opposite substrate, wherein the bank structures form a plurality of accommodating regions, and one of the micro light-emitting diodes is located in one of the accommodating regions. A height of the bank structures is more than or equal to a height of the micro light-emitting diodes.
1. A display device, comprising:
an array substrate;
a plurality of micro light-emitting diodes arranged in an array on the array substrate;
a plurality of bank structures located on the array substrate, wherein the plurality of micro light-emitting diodes are electrically connected to the array substrate, the plurality of bank structures form a plurality of accommodating regions, one of the plurality of micro light-emitting diodes is located in one of the plurality of accommodating regions, one of the plurality of bank structures comprises a first bank portion and a second bank portion, the first bank portion has a first bottom surface and a first side surface connected to the first bottom surface, the first bottom surface is a surface of the first bank portion adjacent to the array substrate, the second bank portion has a second bottom surface and a second side surface connected to the second bottom surface, the second bottom surface is a surface of the second bank portion away from the array substrate, and a height of the one of the plurality of bank structures is more than or equal to a height of the one of the plurality of micro light-emitting diodes; and
an optical coating layer disposed on a surface of the one of the plurality of bank structures.
2. The display device according to claim 1 , wherein a first included angle is formed between the first side surface and the first bottom surface, the first included angle is between 30 degrees and 150 degrees but not equal to 90 degrees.
3. The display device according to claim 2 , wherein a second included angle is formed between the second side surface and the second bottom surface, and the second included angle is between 30 degrees and 150 degrees but not equal to 90 degrees, wherein the first bank portion and the second bank portion are connected to each other, the first included angle is different from the second included angle.
4. The display device according to claim 1 , further comprising:
a protective layer disposed above the one of the plurality of micro light-emitting diodes.
5. The display device according to claim 1 , further comprising:
a scattering material disposed in the one of the plurality of accommodating regions, and covering the one of the plurality of micro light-emitting diodes.
6. The display device according to claim 1 , further comprising:
a wavelength converting material disposed in the one of the plurality of accommodating regions, and covering the one of the plurality of micro light-emitting diodes.
7. A display device, comprising:
an array substrate;
an opposite substrate disposed opposite to the array substrate;
a plurality of micro light-emitting diodes arranged in an array on the array substrate;
a plurality of bank structures located between the array substrate and the opposite substrate, wherein the plurality of micro light-emitting diodes are electrically connected to the array substrate, the plurality of bank structures form a plurality of accommodating regions, one of the plurality of micro light-emitting diodes is located in one of the plurality of accommodating regions, one of the plurality of bank structures comprises a first bank structure and a second bank structure, the first bank structure has a first flat surface and a first inclined surface opposite to each other, the second bank structure has a second flat surface and a second inclined surface opposite to each other, the first inclined surface faces the second inclined surface, a first air gap is formed between the first bank structure and the second bank structure, a width of the first bank structure and a width of the second bank structure gradually increase from the array substrate to the opposite substrate, a first included angle is formed between the first inclined surface and the array substrate, a second included angle is formed between the second inclined surface and the array substrate, and the first included angle and the second included angle are more than or equal to 30 degrees and less than 90 degrees, and a height of the one of the plurality of bank structures is more than or equal to a height of the one of the plurality of micro light-emitting diodes; and
an optical coating layer disposed on a surface of the one of the plurality of bank structures.
8. The display device according to claim 7 , further comprising:
a scattering material disposed in the one of the plurality of accommodating regions, and covering the one of the plurality of micro light-emitting diodes.
9. The display device according to claim 7 , further comprising:
a wavelength converting material disposed in the one of the plurality of accommodating regions, and covering the one of the plurality of micro light-emitting diodes.
10. The display device according to claim 9 , further comprising:
a color filter layer disposed above the opposite substrate and having a plurality of color filter patterns.
11. The display device according to claim 7 , further comprising:
a filler material disposed in the one of the plurality of accommodating regions around the one of the plurality of micro light-emitting diodes, and exposing an upper surface of the one of the plurality of micro light-emitting diodes relatively far away from the array substrate; and
a wavelength converting material disposed in the one of the plurality of accommodating regions, and covering the filler material and the upper surface of the one of the plurality of micro light-emitting diodes.
12. The display device according to claim 11 , further comprising:
a color filter layer disposed above the opposite substrate and having a plurality of color filter patterns.
13. The display device according to claim 7 , wherein a second air gap is formed between the plurality of bank structures and the opposite substrate, the opposite substrate comprises a plurality of light absorbing patterns, the plurality of light absorbing patterns are located in the second air gap, and one of the plurality of light absorbing patterns is disposed corresponding to one of the first air gap.
14. The display device according to claim 13 , further comprising:
a protective layer disposed above the one of the plurality of micro light-emitting diodes and a top surface of the one of the plurality of bank structures relatively far away from the array substrate.