Display device
A display device includes a display panel, a sensor layer provided on the display panel, and a light control layer provided on the sensor layer, and including at least one of a dye or a pigment, wherein the display panel includes a base layer, a pixel-defining film provided on the base layer and having an opening defined therein, a light-emitting element including a light-emitting layer provided in the opening, an inorganic deposition layer provided on the light-emitting element, a low refractive pattern layer provided on the pixel-defining film, and an encapsulation layer provided on the low refractive pattern layer and the inorganic deposition layer, and the encapsulation layer has a higher refractive index than the low refractive pattern layer. Accordingly, due to improved light collection efficiency of the light-emitting element, the display device may have improved display efficiency.
1 . A display device comprising:
a display panel;
a sensor layer on the display panel; and
a light control layer on the sensor layer, the light control layer comprising at least one of a dye or a pigment,
wherein the display panel comprises:
a base layer,
a pixel-defining film on the base layer, the pixel-defining film having an opening defined therein,
a light-emitting element comprising a light-emitting layer in the opening,
an inorganic deposition layer on the light-emitting element,
a low refractive pattern layer on the pixel-defining film, and
an encapsulation layer on the low refractive pattern layer and the inorganic deposition layer, and
wherein the encapsulation layer has a higher refractive index than the low refractive pattern layer.
2 . The display device of claim 1 , wherein the display panel is divided into a display region in which the light-emitting element is provided, and a non-display region adjacent to the display region,
the display panel further comprises a spacer in the non-display region, and
the low refractive pattern layer comprises a same material as the spacer.
3 . The display device of claim 1 , wherein the inorganic deposition layer comprises at least one selected from the group consisting of bismuth (Bi), ytterbium (Yb), and combinations thereof.
4 . The display device of claim 1 , wherein the light control layer comprises at least one selected from the group consisting of an anthraquinone-based compound, a phthalocyanine-based compound, an azo-based compound, a perylene-based compound, a xanthene-based compound, a dimonium-based compound, a dipyrromethene-based compound, a tetraazaporphyrin-based compound, a porphyrin-based compound, a squarylium-based compound, an oxazine-based compound, a triarylmethane-based compound, a cyanine-based compound, and combinations thereof.
5 . The display device of claim 1 , wherein the at least one of the dye or the pigment comprised in the light control layer has a maximum absorption wavelength in a wavelength range of about 490 nm to about 505 nm, and about 585 nm to about 600 nm.
6 . The display device of claim 1 , wherein the light-emitting element further comprises:
a first electrode on the base layer;
a second electrode apart from the first electrode with the light-emitting layer therebetween;
a hole transport region between the first electrode and the light-emitting layer;
an electron transport region between the second electrode and the light-emitting layer; and
a capping layer on the second electrode.
7 . The display device of claim 6 , wherein a part of the capping layer is on the pixel-defining film, and the low refractive pattern layer is directly on the capping layer.
8 . The display device of claim 6 , wherein a part of the second electrode is on the pixel-defining film, and the low refractive pattern layer is directly on the second electrode.
9 . The display device of claim 1 , wherein the low refractive pattern layer is directly on the pixel-defining film.
10 . The display device of claim 1 , wherein a part of the inorganic deposition layer is on the pixel-defining film, and the low refractive pattern layer is directly on the inorganic deposition layer.
11 . The display device of claim 1 , wherein an angle between a side surface of the pixel-defining film and an upper surface of the base layer is about 60° to about 85°, and
the pixel-defining film has a thickness of about 1.5 μm to about 2 μm.
12 . The display device of claim 1 , wherein an angle between a side surface of the low refractive pattern layer and an upper surface of the base layer is about 70° to about 88°, and
the low refractive pattern layer has a thickness of about 3 μm to about 4.5 μm.
13 . The display device of claim 1 , wherein the encapsulation layer comprises at least one organic encapsulation layer, and
the organic encapsulation layer has a higher refractive index than the low refractive pattern layer.
14 . The display device of claim 13 , wherein a difference between a refractive index of the organic encapsulation layer and a refractive index of the low refractive pattern layer is about 0.1 or more.
15 . The display device of claim 1 , wherein the low refractive pattern layer has a refractive index of about 1.45 to about 1.65, and
the encapsulation layer has a refractive index of about 1.75 to about 2.
16 . The display device of claim 1 , wherein the sensor layer comprises:
a sensor base layer on the encapsulation layer;
a first conductive layer on the sensor base layer;
an inorganic insulating layer on the first conductive layer;
a second conductive layer on the inorganic insulating layer; and
an organic insulating layer on the second conductive layer, and
the first conductive layer and the second conductive layer each overlap the pixel-defining film in a plan view.
17 . A display device comprising:
a display panel; and
a light control layer on the display panel, the light control layer comprising at least one of a dye or a pigment,
wherein the display panel comprises:
a base layer,
a pixel-defining film on the base layer, and having an opening defined therein,
a light-emitting element comprising a light-emitting layer in the opening,
an inorganic deposition layer on the light-emitting element,
a low refractive pattern layer on the pixel-defining film, and
an encapsulation layer on the low refractive pattern layer and the inorganic deposition layer,
an angle between a side surface of the pixel-defining film and an upper surface of the base layer is about 60° to about 85°, and
an angle between a side surface of the low refractive pattern layer and the upper surface of the base layer is about 70° to about 88°.
18 . The display device of claim 17 , wherein the low refractive pattern layer has a refractive index of about 1.45 to about 1.65, and
the encapsulation layer has a refractive index of about 1.75 to about 2.
19 . A display device comprising:
a display panel; and
a sensor layer on the display panel,
wherein the display panel comprises:
a base layer,
a pixel-defining film on the base layer, and having an opening defined therein,
a light-emitting element comprising a light-emitting layer in the opening,
a low refractive pattern layer on the pixel-defining film, and
an encapsulation layer on the low refractive pattern layer,
the encapsulation layer has a higher refractive index than the low refractive pattern layer, and
an angle between a side surface of the low refractive pattern layer and an upper surface of the base layer is about 70° to about 88°.
20 . The display device of claim 19 , further comprising a light control layer on the sensor layer, wherein the light control layer comprises at least one selected from the group consisting of an anthraquinone-based compound, a phthalocyanine-based compound, an azo-based compound, a perylene-based compound, a xanthene-based compound, a dimonium-based compound, a dipyrromethene-based compound, a tetraazaporphyrin-based compound, a porphyrin-based compound, a squarylium-based compound, an oxazine-based compound, a triarylmethane-based compound, a cyanine-based compound, and combinations thereof.