Display device
AssigneeLG Display Co., Ltd.
InventorsIl-Soo Kim, Yongseok Kwak, Kyuoh Kwon, Seungjun Lee
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Abstract
A display device according to an embodiment of the present disclosure includes a substrate on which a plurality of sub-pixels are defined, a plurality of LEDs disposed in each of the plurality of sub-pixels, and a plurality of color conversion layers covering the plurality of LEDs. The plurality of color conversion layers each include a plurality of color conversion material layers that are stacked to be spaced apart from each other. Accordingly, according to the present disclosure, it is possible to minimize or reduce light lost inside the color conversion layer by separating the plurality of color conversion material layers from each other, and improve color conversion efficiency and luminance.
Claims21
A display device, comprising:
- a substrate on which a plurality of sub-pixels are defined;
- a plurality of transistors disposed in the plurality of sub-pixels and including an active layer, a source electrode and a drain electrode;
- an organic layer disposed on the plurality of transistors;
- a plurality of light emitting diodes (LEDs) disposed on the organic layer in the plurality of sub-pixels;
- a first connection electrode disposed between the organic layer and each of the plurality of LEDs;
- and
- a plurality of color conversion layers covering the plurality of LEDs,
- wherein each of the plurality of color conversion layers includes:
- a plurality of color conversion material layers that are stacked to be spaced apart from each other;
- and
- a plurality of transparent layers disposed between the plurality of LEDs and the plurality of color conversion material layers, between each of the plurality of color conversion material layers, and on the plurality of color conversion material layers, and
- wherein a first electrode of each of the plurality of LEDs is electrically connected to each of the plurality of transistors through the first connection electrode formed by penetrating the organic layer.
A display device, comprising:
- a substrate on which a plurality of sub-pixels including first emission areas and second emission areas are defined;
- a plurality of transistors disposed in the plurality of sub-pixels and including an active layer, a source electrode and a drain electrode;
- an organic layer disposed on the plurality of transistors;
- light emitting diodes (LEDs) disposed on the organic layer in the first emission areas;
- a first connection electrode disposed between the organic layer and the LEDs;
- color conversion layers covering the LEDs in the plurality of sub-pixels and each including a plurality of color conversion material layers spaced apart from each other;
- and
- a bank disposed between the plurality of sub-pixels on the substrate and surrounding each of the color conversion layers,
- wherein the first emission area overlaps all of the plurality of color conversion material layers,
- wherein a partial area of the second emission area overlaps a portion of the plurality of color conversion material layers,
- wherein the plurality of color conversion material layers each includes:
- a first color conversion material layer disposed on the LEDs;
- and
- a second color conversion material layer disposed on the first color conversion material layer,
- wherein a center of each of the first color conversion material layer and the second color conversion material layer overlaps the first emission area,
- wherein an edge of the second color conversion material layer is disposed closer to the bank than an edge of the first color conversion material layer, and
- wherein a first electrode of each of the LEDs is electrically connected to each of the plurality of transistors through the first connection electrode formed by penetrating the organic layer.
Dependencies are inferred from the claim text.