LIGHT-EMITTING DEVICE
Provided is a light-emitting device including a substrate, a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, a blue light absorbing photoresist layer and an atomic layer deposition (ALD) gas barrier layer. The first light-emitting unit includes a first micro LED device and a first light conversion layer wrapping the first micro LED device, the second light-emitting unit includes a second micro LED device and a second light conversion layer wrapping the second micro LED device, and the third light-emitting unit includes a third micro LED device and the third light conversion layer wrapping the third micro LED device. The blue light absorbing photoresist layer covers the first and second light-emitting units, while exposing the third light-emitting unit. The ALD gas barrier layer wraps the first, second, and third light-emitting units, and the blue light absorbing photoresist layer.
1 . A light-emitting device, comprising:
a substrate;
a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit disposed on the substrate, wherein the first light-emitting unit comprises a first micro light-emitting diode (micro LED) device and a first light conversion layer wrapping the first micro LED device, the second light-emitting unit comprises a second micro LED device and a second light conversion layer wrapping the second micro LED device, and the third light-emitting unit comprises a third micro LED device and the third light conversion layer wrapping the third micro LED device, and the first, second, and third light-emitting units emit light of different colors; and
a blue light absorbing photoresist layer covering the first and second light-emitting units, while exposing the third light-emitting unit.
2 . The light-emitting device of claim 1 , wherein the first, second and third micro LED devices are inorganic-based micro LED devices, organic-based micro OLED devices or quantum-dot-based micro QLED devices.
3 . The light-emitting device of claim 1 , wherein the first light-emitting unit emits red light, the second light-emitting unit emits green light, and the third light-emitting unit emits blue light.
4 . The light-emitting device of claim 3 , wherein the first light conversion layer comprises a red quantum-dot photoresist layer, the second light conversion layer comprises a green quantum-dot photoresist layer, and the third light conversion layer comprises a white photoresist layer without any quantum dot.
5 . The light-emitting device of claim 1 , further comprising: an atomic layer deposition (ALD) gas barrier layer wrapping the first, second, and third light-emitting units, and the blue light absorbing photoresist layer.
6 . The light-emitting device of claim 5 , further comprising:
a black matrix, disposed between the first, second, and third light-emitting units; and
a planarization layer, disposed between the ALD gas barrier layer and the blue light absorbing photoresist layer and extending to cover the third light emitting unit and the black matrix.
7 . The light-emitting device of claim 5 , wherein the ALD gas barrier layer comprises a three-layered structure composed of aluminum oxide/silicon dioxide/aluminum oxide.
8 . The light-emitting device of claim 5 , wherein the ALD gas barrier layer comprises a five-layered structure composed of aluminum oxide/silicon dioxide/aluminum oxide/silicon dioxide/aluminum oxide.
9 . The light-emitting device of claim 7 , wherein the silicon dioxide in the ALD gas barrier layer can be replaced by zinc oxide, zirconium dioxide, titanium dioxide, or hafnium dioxide.
10 . The light-emitting device of claim 5 , wherein the ALD gas barrier layer comprises aluminum oxide which is wrapped by an organic protective layer and a plasma-enhanced chemical vapor deposition (PECVD) gas barrier layer, so as to form a four-layered structure composed of a first organic protective layer/aluminum oxide/the PECVD gas barrier layer/a second organic protective layer.
11 . The light-emitting device of claim 10 , wherein the first and second organic protective layers each comprises photo-curable or thermo-curable acrylic resin, epoxy resin, or silicone resin.
12 . The light-emitting device of claim 10 , wherein the PECVD gas barrier layer comprises silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ).
13 . The light-emitting device of claim 1 , wherein a material of the blue light absorbing photoresist layer comprises cadmium sulfide, lead chromate, bismuth vanadate, Pigment Yellow 181, Pigment Yellow 191, or a combination thereof.
14 . A light-emitting device, comprising:
a first tier, comprises a plurality of blue light-emitting units disposed on a first substrate; and
a second tier, disposed on the first tier, wherein the second tier comprises:
a first light-emitting unit, corresponding to a first portion of the plurality of blue light-emitting units, wherein the first light-emitting unit comprises a first light conversion layer and a first blue light absorbing photoresist layer covering the first light conversion layer;
a second light-emitting unit, corresponding to a second portion of the plurality of blue light-emitting units, wherein the second light-emitting unit comprises a second light conversion layer and a second blue light absorbing photoresist layer covering the second light conversion layer;
a third light-emitting unit, corresponding to a third portion of the plurality of blue light-emitting units, wherein the third light-emitting unit comprises a third light conversion layer and does not have any blue light absorbing photoresist layer; and
a second substrate, covering the first, second, and third light-emitting units.
15 . The light-emitting device of claim 14 , further comprising: an ALD gas barrier layer wrapping the first, second, and third light-emitting units, and the second substrate.
16 . The light-emitting device of claim 15 , wherein the ALD gas barrier layer further extends between a top surface of the first tier and a bottom surface of the second tier.
17 . The light-emitting device of claim 14 , wherein each blue light-emitting unit comprises a blue light micro LED device and a transparent photoresist material wrapping the blue light micro LED device, wherein the blue light micro LED device is an inorganic-based micro LED device, an organic-based micro OLED device or a quantum-dot-based micro QLED device.
18 . The light-emitting device of claim 14 , wherein the first light-emitting unit emits red light, the second light-emitting unit emits green light, and the third light-emitting unit emits blue light.
19 . The light-emitting device of claim 14 , wherein the first light conversion layer comprises a red quantum-dot photoresist layer, the second light conversion layer comprises a green quantum-dot photoresist layer, and the third light conversion layer comprises a white photoresist layer without any quantum dot.
20 . The light-emitting device of claim 15 , further comprising:
a black matrix, disposed between the first, second, and third light-emitting units; and
a planarization layer, disposed between the ALD gas barrier layer and the first light-emitting unit, between the ALD gas barrier layer and the second light-emitting unit, and between the ALD gas barrier layer and the third light-emitting unit.
21 . The light-emitting device of claim 15 , wherein the ALD gas barrier layer comprises a three-layered structure composed of aluminum oxide/silicon dioxide/aluminum oxide.
22 . The light-emitting device of claim 15 , wherein the ALD gas barrier layer comprises a five-layered structure composed of aluminum oxide/silicon dioxide/aluminum oxide/silicon dioxide/aluminum oxide.
23 . The light-emitting device of claim 21 , wherein the silicon dioxide in the ALD gas barrier layer can be replaced by zinc oxide, zirconium dioxide, titanium dioxide, or hafnium dioxide.
24 . The light-emitting device of claim 15 , wherein the ALD gas barrier layer comprises aluminum oxide which is wrapped by an organic protective layer and a plasma-enhanced chemical vapor deposition (PECVD) gas barrier layer, so as to form a four-layered structure composed of a first organic protective layer/aluminum oxide/the PECVD gas barrier layer/a second organic protective layer.
25 . The light-emitting device of claim 24 , wherein the first and second organic protective layers each comprises photo-curable or thermo-curable acrylic resin, epoxy resin, or silicone resin.
26 . The light-emitting device of claim 24 , wherein the PECVD gas barrier layer comprises silicon nitride (SiN x ) or silicon oxynitride (SiO x N y ).
27 . The light-emitting device of claim 14 , wherein a material of the blue light absorbing photoresist layer comprises cadmium sulfide, lead chromate, bismuth vanadate, Pigment Yellow 181, Pigment Yellow 191, or a combination thereof.