Abstract: Disclosed is a display device. An embodiment of the inventive concept provides a display device that includes a substrate including a first sub pixel region, a second sub pixel region, and a third sub pixel region, reflective bottom electrodes provided on the substrate, a blue light emitting layer provided on the lower reflective electrodes, an encapsulation layer provided on the blue light emitting layer, a green color conversion layer provided on the encapsulation layer in the first sub pixel region, a color conversion layer provided on the encapsulation layer in the second sub pixel region, a blue reflective layer provided on both the green color conversion layer and the color conversion layer, and a blue transmissive layer disposed adjacent to the color conversion layer and provided on the encapsulation layer in the third sub pixel region.

Abstract: Provided is a flexible organic light emitting element that may include a flexible substrate, a circuit element layer on the flexible substrate, an emission layer on the circuit element layer, a first encapsulation structure between the flexible substrate and the circuit element layer, and a second encapsulation structure on the emission layer, wherein the first encapsulation structure includes a first inorganic layer and a first organic layer, which are sequentially stacked on an upper surface of the flexible substrate, and the first organic layer includes a first polymer nanocomposite.

Abstract: Provided is a light emitting device including a lower electrode, an upper electrode disposed to face the lower electrode, a quantum dot light emitting layer between the lower electrode and the upper electrode, an electron transport layer between the lower electrode and the quantum dot light emitting layer, and a hole transport layer between the upper electrode and the quantum dot light emitting layer, wherein the quantum dot light emitting layer includes a quantum dot, and a first ligand on a surface of the quantum dot, and a second ligand on the surface of the quantum dot.

Abstract: A display device according to an embodiment of the inventive concept provides includes a substrate, a green light emitting element group and a blue light emitting element group, which are repeatedly arranged in a first direction parallel to a top surface of the substrate, and a red conversion pattern on the green light emitting element group and the blue light emitting element group. Here, the red conversion pattern overlaps a portion of the green light emitting element group and a portion of the blue light emitting element group in a second direction perpendicular to the top surface of the substrate.

Abstract: Provided is a pressure sensitive display device including a sensing substrate, a reaction substrate provided on the sensing substrate, and spacers provided between the sensing substrate and the reaction substrate to space the sensing substrate apart from the reaction substrate. Here, the sensing substrate includes a flexible substrate and a touch electrode provided on one surface of the flexible substrate, which faces the reaction substrate. The reaction substrate includes a transparent substrate, a transparent electrode provided on one surface of the transparent substrate, which faces the sensing substrate, and a light emitting layer disposed on the transparent electrode.

Abstract: Provided is a nano structure for controlling optical properties of an optical device. The nano structure includes a substrate, a surface modification layer provided on the substrate to modify surface energy of the substrate, and a capping layer provided on the surface modification layer. The capping layer includes a convex portion having a convex profile away from the surface modification layer and a concave portion that is in contact with the surface modification layer.

Abstract: Provided is a bio-signal detection and stimulation device. The bio-signal detection and stimulation device includes a flexible substrate, a stimulation part on the flexible substrate, and a detection electrode part on the flexible substrate. The stimulation part and the detection electrode part vertically overlap each other, the stimulation part includes an organic light emitting diode (OLED), the stimulation part emits an optical signal, and the detection electrode part detects a bio-signal.

Abstract: Provided is a light emitting device including a lower electrode, an upper electrode disposed to face the lower electrode, a quantum dot light emitting layer between the lower electrode and the upper electrode, an electron transport layer between the lower electrode and the quantum dot light emitting layer, and a hole transport layer between the upper electrode and the quantum dot light emitting layer, wherein the quantum dot light emitting layer includes a quantum dot, and a first ligand on a surface of the quantum dot, and a second ligand on the surface of the quantum dot.

Abstract: A display device according to an embodiment of the inventive concept provides includes a substrate, a green light emitting element group and a blue light emitting element group, which are repeatedly arranged in a first direction parallel to a top surface of the substrate, and a red conversion pattern on the green light emitting element group and the blue light emitting element group. Here, the red conversion pattern overlaps a portion of the green light emitting element group and a portion of the blue light emitting element group in a second direction perpendicular to the top surface of the substrate.

Abstract: Provided is a complex biometric sensor. The complex biometric sensor includes a substrate including a light emitting region, a first light receiving region, and a second light receiving region, a light emitting part disposed adjacent to the substrate in the light emitting region, a color conversion layer disposed on the substrate in the light emitting region and vertically overlapping the light emitting part; a first light receiving layer disposed on the substrate in the first light receiving region, and a second light receiving layer disposed on the substrate in the second light receiving region. The light emitting part generates light of a first wavelength. The color conversion layer receives light of the first wavelength and emits the light of the first wavelength and light of the second wavelength. The first light receiving layer detects the light of the first wavelength. The second light receiving layer detects the light of the second wavelength.

Abstract: A pixel circuit includes a sensing block, a stimulation block, a first line control circuit, and a second line control circuit. The sensing block outputs biometric data of a biosignal in response to a first selection signal. The stimulation block radiates a stimulation signal in response to a second selection signal. The first line control circuit outputs the first selection signal for selecting the sensing block as a target sensing block, and outputs the second selection signal for selecting the stimulation block as a target stimulation block. The second line control circuit processes characteristic data associated with the biometric data and the stimulation signal.

Abstract: Provided is a pressure sensitive display device including a sensing substrate, a reaction substrate provided on the sensing substrate, and spacers provided between the sensing substrate and the reaction substrate to space the sensing substrate apart from the reaction substrate. Here, the sensing substrate includes a flexible substrate and a touch electrode provided on one surface of the flexible substrate, which faces the reaction substrate. The reaction substrate includes a transparent substrate, a transparent electrode provided on one surface of the transparent substrate, which faces the sensing substrate, and a light emitting layer disposed on the transparent electrode.

Abstract: Provided is a stretchable display including an elastic body, a light emitting unit on the elastic body, and a wiring unit on the elastic body, wherein the light emitting unit includes a first substrate unit on the elastic body, a buffer layer on the first substrate unit, and a light emitting element on the buffer layer, the wiring unit includes a second substrate unit on the elastic body, a driving element configured to control the light emitting element, a wiring configured to electrically connect the driving element and the light emitting element, and an insulation layer configured to cover the driving element and the wiring, the light emitting unit and the wiring unit have respective corrugation structures, a thickness of the light emitting unit is larger than that of the wiring unit, a modulus of elasticity of the buffer layer is larger than that of the insulation layer, and a modulus of elasticity of the elastic body is smaller than that of the insulation layer.

Abstract: Provided is a display device and a manufacturing method thereof. More specifically, the present invention relates to a display device including a nickel oxide thin film co-doped with a copper monovalent cation and a copper divalent cation, and a manufacturing method thereof. The present invention provides a display device including a substrate, a first electrode layer disposed on the substrate, a first common layer disposed on the substrate, a light emitting layer disposed on the first common layer, a second common layer disposed on the light emitting layer, and a second electrode layer disposed on the second common layer, wherein the first common layer includes a nickel oxide thin film co-doped with a first metal cation and a second metal cation, and the oxidation number of the first metal cation and the oxidation number the second metal cation are different from each other.

Abstract: Provided is a complex biometric sensor. The complex biometric sensor includes a substrate including a light emitting region, a first light receiving region, and a second light receiving region, a light emitting part disposed adjacent to the substrate in the light emitting region, a color conversion layer disposed on the substrate in the light emitting region and vertically overlapping the light emitting part; a first light receiving layer disposed on the substrate in the first light receiving region, and a second light receiving layer disposed on the substrate in the second light receiving region. The light emitting part generates light of a first wavelength. The color conversion layer receives light of the first wavelength and emits the light of the first wavelength and light of the second wavelength. The first light receiving layer detects the light of the first wavelength. The second light receiving layer detects the light of the second wavelength.

Abstract: An organic light-emitting device includes a substrate, a bottom electrode on the substrate, an organic light-emitting layer on the bottom electrode, and a top electrode on the organic light-emitting layer, wherein the top electrode includes a first electrode part, a grid-shaped or plate-shaped second electrode part on the first electrode part, and an adhesive layer on the second electrode part. The organic light-emitting device includes the top electrode that has low sheet resistance. The top electrode includes a graphene layer as the first electrode part.

Abstract: Provided is a stretchable display including an elastic body, a light emitting unit on the elastic body, and a wiring unit on the elastic body, wherein the light emitting unit includes a first substrate unit on the elastic body, a buffer layer on the first substrate unit, and a light emitting element on the buffer layer, the wiring unit includes a second substrate unit on the elastic body, a driving element configured to control the light emitting element, a wiring configured to electrically connect the driving element and the light emitting element, and an insulation layer configured to cover the driving element and the wiring, the light emitting unit and the wiring unit have respective corrugation structures, a thickness of the light emitting unit is larger than that of the wiring unit, a modulus of elasticity of the buffer layer is larger than that of the insulation layer, and a modulus of elasticity of the elastic body is smaller than that of the insulation layer.

Abstract: Provided is an optical fingerprint recognition sensor. The optical fingerprint recognition sensor includes a transparent light emitting unit configured to emit light to a fingerprint, a light receiving unit disposed below the light emitting unit to vertically overlap the light emitting unit and configured to receive light reflected by the fingerprint, and a control unit disposed below the light emitting unit to vertically overlap the light emitting unit and configured to control the light emitting unit and the light receiving unit. The light emitting unit includes an organic layer.

Abstract: Provided is a display device and a manufacturing method thereof. More specifically, the present invention relates to a display device including a nickel oxide thin film co-doped with a copper monovalent cation and a copper divalent cation, and a manufacturing method thereof. The present invention provides a display device including a substrate, a first electrode layer disposed on the substrate, a first common layer disposed on the substrate, a light emitting layer disposed on the first common layer, a second common layer disposed on the light emitting layer, and a second electrode layer disposed on the second common layer, wherein the first common layer includes a nickel oxide thin film co-doped with a first metal cation and a second metal cation, and the oxidation number of the first metal cation and the oxidation number the second metal cation are different from each other.

Abstract: Provided are a method for manufacturing an integrated substrate for an organic light emitting diode, an organic light emitting diode, and a method for manufacturing an organic light emitting diode, wherein the method for manufacturing an organic light emitting diode may include forming a sacrificial layer on a release substrate, forming a first electrode on the sacrificial layer, forming on the first electrode an auxiliary electrode pattern having an opening, forming a buffer layer on the auxiliary electrode pattern and in the opening, providing a substrate on the buffer layer, removing the release substrate and the sacrificial layer to expose a first surface of the first electrode, and laminating an organic light emitting layer and a second electrode on the first surface of the first electrode.