Transfer substrate used for manufacturing display device, display device, and method for manufacturing display device
The present invention relates to a display device using a semiconductor light emitting element and a manufacturing method therefor. The display device comprises: a base substrate including a circuit wiring; a lower electrode part provided on the base substrate and connected to the circuit wiring; and a plurality of nanorod type semiconductor light emitting elements separated from each other and vertically arranged on the lower electrode part.
1 . A display device using semiconductor light emitting elements, the display device comprising:
a base substrate including circuit wiring;
a lower electrode arranged on the base substrate and connected to the circuit wiring;
a plurality of nanorod-type semiconductor light emitting elements spaced apart from each other and vertically arranged on the lower electrode;
a cover substrate stacked on the plurality of nanorod-type semiconductor light emitting elements;
an upper electrode disposed on the cover substrate and in contact with the plurality of nanorod-type semiconductor light emitting elements;
first partition walls arranged between the base substrate and the cover substrate to separate a unit structure including the lower electrode, the plurality of nanorod-type semiconductor light emitting elements, and the upper electrode; and
a phosphor filled in a space defined between the first partition walls,
wherein each of the plurality of nanorod-type semiconductor light emitting elements comprises an opposite end having a non-flat contact surface formed by segmenting a porous region of the plurality of nanorod-type semiconductor light emitting elements.
2 . The display device of claim 1 , wherein the plurality of nanorod-type semiconductor light emitting elements are arranged at a predetermined spacing in an entire region of a top surface of the lower electrode.
3 . The display device of claim 2 , wherein at least some of the plurality of nanorod-type semiconductor light emitting elements are arranged on edges of the top surface of the lower electrode.
4 . The display device of claim 1 , further comprising:
a plurality of color filters disposed on the cover substrate corresponding to a position of the unit structure; and
second partition walls for separating the plurality of color filters from each other.
5 . The display device of claim 1 , wherein the plurality of nanorod-type semiconductor light emitting elements include:
a first nanorod-type semiconductor light emitting element including a non-flat contact surface at an end in contact with the upper electrode; and
a second nanorod-type semiconductor light emitting element including a non-flat contact surface at an end in contact with the lower electrode.
6 . The display device of claim 5 , wherein the first and second nanorod-type semiconductor light emitting elements emit light of different wavelengths, respectively.
7 . The display device of claim 5 , further comprising:
an additional lower electrode disposed on a top surface of the cover substrate; and
a plurality of third nanorod-type semiconductor light emitting elements spaced apart from each other and arranged vertically on the additional lower electrode.
8 . The display device of claim 7 , wherein the first to third nanorod-type semiconductor light emitting elements emit light of wavelengths different from each other.
9 . The display device of claim 7 , wherein the plurality of third nanorod-type semiconductor light emitting elements are arranged on the cover substrate corresponding to a separation space defined between the first and second nanorod-type semiconductor light emitting elements.