Display device using semiconductor light-emitting element
A display device of the present invention relates to a structure for bottom emission, comprising: a base part; assembly electrodes which extend in one direction and which are formed on the base part; a dielectric layer formed to cover the assembly electrodes; a barrier rib part which has a plurality of cells, and which is stacked on the dielectric layer; and semiconductor light-emitting elements loaded in the cell, wherein the assembly electrodes include a metal electrode part formed of a metal material and a transparent electrode part formed of a transparent material.
1 . A display device comprising:
a base portion;
assembled electrodes extending in one direction and formed on the base portion;
a dielectric layer formed to cover the assembled electrodes;
a partition wall portion on the dielectric layer and configured to form a plurality of cells; and
semiconductor light emitting diodes seated in each of the plurality of cells,
wherein each of the assembled electrodes comprises a pair of electrodes,
wherein each electrode of the pair of the electrodes includes a metal electrode portion formed of a metal material and a transparent electrode portion formed of a transparent material,
wherein the dielectric layer is between the pair of electrodes and between an upper surface of the transparent electrode portion and a lower surface of a corresponding semiconductor light emitting diode, and
wherein the metal electrode portion is not overlapped vertically with the corresponding semiconductor light emitting diode.
2 . The display device of claim 1 , wherein the transparent electrode portion is formed at a region overlapping at least the corresponding semiconductor light emitting diode.
3 . The display device of claim 1 , wherein a cell of the plurality of cells overlaps the transparent electrode portion of the assembled electrode.
4 . The display device of claim 1 , wherein the metal electrode portion is continuously formed along each corresponding assembled electrode.
5 . The display device of claim 1 , wherein each of the assembled electrodes includes a connection portion comprising an overlap between a corresponding metal electrode portion and a corresponding transparent electrode portion.
6 . The display device of claim 5 , wherein the corresponding metal electrode portion covers a portion of the corresponding transparent electrode portion.
7 . The display device of claim 1 , wherein each semiconductor light emitting diode comprises:
a first conductivity type electrode;
a first conductivity type semiconductor layer on which the first conductivity type electrode is formed;
an active layer formed on the first conductivity type semiconductor layer;
a second conductivity type semiconductor layer formed on the active layer; and
a second conductivity type electrode spaced apart from the first conductivity type electrode in a horizontal direction on the second conductivity type semiconductor layer.
8 . The display device of claim 1 , further comprising a planarization layer formed to cover the partition wall portion and the semiconductor light emitting diodes.
9 . The display device of claim 8 , wherein the planarization layer is formed of a white insulator.
10 . The display device of claim 8 , wherein the planarization layer includes a coating layer formed of a reflective non-conductive material.
11 . The display device of claim 1 , wherein the base portion is formed of a light-transmitting material.
12 . The display device of claim 1 , further comprising a wiring electrode formed on the base portion and electrically connected to the semiconductor light emitting diode.