Abstract: A display system includes a display panel comprising a plurality of pixel circuits, and a measurement and data processing unit that is external to the display panel. Each pixel circuit includes a light-emitting device having a first terminal connected to a first voltage supply and a second terminal opposite from the first terminal; a first transistor connected between a data voltage supply line from the measurement and data processing unit and the second terminal of the light emitting device; and a second transistor connected between the second terminal of the light-emitting device and a sample line to the measurement and data processing unit. The measurement and data processing unit samples a measured voltage at the second terminal of the light-emitting device through the sample line and outputs a data voltage to the light-emitting device based on the measured voltage to compensate variations in properties of the light-emitting device.

Abstract: A light-emitting structure maximizes constructive interference for light emission by adjusting charge carrier mobilities of different sub-pixel emissive layers such that charge recombination occurs at a boundary of each emissive layer and one of the charge transport layers. The light-emitting layer structure includes two electrode layers that respectively generate first and second charges that are carried via first and second charge transport layers, and a plurality of emissive layers (EMLs) including a first EML having a first charge mobility favoring the first charges and a second EML having a second charge mobility favoring second charges. The first EML emits light by recombination of the first and second charges at a first boundary layer formed at one of the charge transport layers and the first EML, and the second EML emits light by recombination of the first and second charges at a second boundary layer formed at the other of the charge transport layers and the second EML.

Abstract: A light-emitting device for use in a display device has enhanced directional light emission, and enhanced on-axis light emission in particular. A light-emitting device includes a layer structure that includes from a non-emitting side: a first electrode layer; a first charge transport layer; an emissive layer; a second charge transport layer; a second electrode layer; an optically transparent layer; and a partially transmitting reflector layer. The light-emitting device comprises a plurality of regions and each region emits light of a different wavelength, such as for example red, green, and blue light-emitting regions. The optically transparent layer is present in at least one of the plurality of regions. The optically transparent layer may be present in more than one of the plurality of regions, and a thickness of the optically transparent layer may differ in different regions to optimize light emission at different wavelengths.

Abstract: A light-emitting device includes a combined charge transport and emissive layer (CCTEL). The light-emitting device includes an anode, a cathode, and a CCTEL disposed between the anode and the cathode, the CCTEL comprising a crosslinked charge transport material and quantum dots. The quantum dots are distributed unevenly within the crosslinked charge transport material. The quantum dots may be phase separated from the crosslinked charge transport material whereby the quantum dots form a layer at least partially within the CCTEL at or adjacent to an outer surface of the CCTEL closest to the cathode or the anode. The quantum dots may phase separate from the crosslinked material at least in part during the deposition of a mixture including the crosslinked material and quantum dots in a solvent, as the solvent component of the mixture evaporates. The quantum dots may phase separate from the crosslinked material at least in part in response to an activation stimulus, such as exposure to UV light.

Abstract: A display system includes a display panel comprising a plurality of pixel circuits, and a measurement and data processing unit that is external to the display panel. Each pixel circuit includes a light-emitting device having a first terminal connected to a first voltage supply and a second terminal opposite from the first terminal; a first transistor connected between a data voltage supply line from the measurement and data processing unit and the second terminal of the light emitting device; and a second transistor connected between the second terminal of the light-emitting device and a sample line to the measurement and data processing unit. The measurement and data processing unit samples a measured voltage at the second terminal of the light-emitting device through the sample line and outputs a data voltage to the light-emitting device based on the measured voltage to compensate variations in properties of the light-emitting device.

Abstract: A light-emitting device is optimized for radiative recombination and minimizes non-radiative recombination. The light-emitting device includes an emissive layer, a first electrode and a second electrode from which charges are generated, a first charge transport layer that injects charges from the first electrode into the emissive layer, and a second charge transport layer that injects charges from the second electrode into the emissive layer. At least one of the charge transport layers includes a mixture of a first nanoparticle population and a second nanoparticle population, and the first nanoparticle population and the second nanoparticle population are conductive nanoparticles that are energetically non-aligned as between the first nanoparticle population and the second nanoparticle population.

Abstract: A light-emitting device is configured to emit light in improved accordance with the Rec. 2020 specification. The light emitting device includes a substrate; a first electrode disposed on the substrate between an outer surface of the light emitting device and the substrate; a second electrode disposed between the first electrode and the outer surface; a first emissive layer in electrical contact with the first electrode and the second electrode, wherein the first emissive layer includes quantum dots that emit light when electrically excited, and wherein the first emissive layer is associated with a first peak wavelength, ?1; and a second emissive layer disposed between the first emissive layer and a viewing side of the light emitting device, wherein the second emissive layer is a photoluminescent layer that includes quantum dots that emit light when optically excited, and the second emissive layer is associated with a second peak wavelength, ?2, different from the first peak wavelength.

Abstract: A light-emitting device includes an anode; a cathode; and an emissive layer disposed between the anode and the cathode, the emissive layer including quantum dots dispersed in a crosslinked matrix formed from one or more crosslinkable charge transport materials. A method of forming the emissive layer of a light-emitting device includes depositing a mixture including quantum dots and one or more crosslinkable charge transport materials on a layer; and subjecting at least a portion of the mixture to UV activation to form an emissive layer including quantum dots dispersed in a crosslinked matrix.

Abstract: A light-emitting device for use in a display device has enhanced directional light emission, and enhanced on-axis light emission in particular. A light-emitting device includes a layer structure that includes from a non-emitting side: a first electrode layer; a first charge transport layer; an emissive layer; a second charge transport layer; a second electrode layer; an optically transparent layer; and a partially transmitting reflector layer. The light-emitting device comprises a plurality of regions and each region emits light of a different wavelength, such as for example red, green, and blue light-emitting regions. The optically transparent layer is present in at least one of the plurality of regions. The optically transparent layer may be present in more than one of the plurality of regions, and a thickness of the optically transparent layer may differ in different regions to optimize light emission at different wavelengths.

Abstract: A light-emitting device includes an anode; a cathode; and an emissive layer disposed between the anode and the cathode, the emissive layer including quantum dots dispersed in a crosslinked matrix formed from one or more crosslinkable charge transport materials. A method of forming the emissive layer of a light-emitting device includes depositing a mixture including quantum dots and one or more crosslinkable charge transport materials on a layer; and subjecting at least a portion of the mixture to UV activation to form an emissive layer including quantum dots dispersed in a crosslinked matrix.

Abstract: A light-emitting device includes an anode; a cathode; and an emissive layer disposed between the anode and the cathode, the emissive layer including quantum dots dispersed in a crosslinked matrix formed from one or more crosslinkable charge transport materials. A method of forming the emissive layer of a light-emitting device includes depositing a mixture including quantum dots and one or more crosslinkable charge transport materials on a layer; and subjecting at least a portion of the mixture to UV activation to form an emissive layer including quantum dots dispersed in a crosslinked matrix.

Abstract: A light-emitting device includes an emissive layer that emits light by recombination of first charges and second charges, a first electrode from which the first charges are supplied, a second electrode located on an opposite side of the emissive layer relative to the first electrode from which the second charges are supplied, and a charge transporting layer that is located between the emissive layer and the first electrode that injects the first charges from the first electrode into the emissive layer. The charge transporting layer includes a nanoparticle layer that provides a roughened electrode interface between the first electrode and the charge transporting layer and the emissive layer includes a plurality of quantum dots in electrical contact with the first electrode and the second electrode.

Abstract: A display device includes a display panel including a plurality of sub-pixels, a touch sensor electrode that is made of a first conductive and opaque material layer that is located directly on the display panel and overlaps a portion of the display panel in between a portion of the plurality of sub-pixels, and a feedline that is made of a second conductive and opaque material layer that is connected to the touch sensor electrode, overlaps a portion of the display panel in between some of the plurality of sub-pixels that is not overlapped by the touch sensor electrode, defines a pair of conductors around a sub-pixel in one or more columns of sub-pixels of the plurality of sub-pixels such that the pair of conductors are electrically connected above and below each sub-pixel in the one or more columns, and routes the touch sensor electrode to a touch sensor controller.

Abstract: A light-emitting device includes an anode; a cathode; and an emissive layer disposed between the anode and the cathode, the emissive layer including quantum dots dispersed in a crosslinked matrix formed from one or more crosslinkable charge transport materials. A method of forming the emissive layer of a light-emitting device includes depositing a mixture including quantum dots and one or more crosslinkable charge transport materials on a layer; and subjecting at least a portion of the mixture to UV activation to form an emissive layer including quantum dots dispersed in a crosslinked matrix.

Abstract: A light-emitting device maximizes optical efficiency when the emissive layer is high refractive index material. Said device includes an emissive layer; a first electrode and a second electrode from which charges are generated; a first charge transport layer that injects charges from the first electrode into the emissive layer; and a second charge transport layer that injects charges from the second electrode into the emissive layer. A Fresnel reflection value at boundaries between the emissive layer and at least one of the first and second charge transport layers is from 5% through 30%, and at least one of the charge transport layers satisfies a half wavelength condition of having a thickness that is equal to within twenty percent of ½ of one wavelength of an integer multiple of ½ of one wavelength in the charge transport layer material within a bandwidth of emission of the emissive layer.

Abstract: A pixel circuit for a display device includes a drive transistor configured to control an amount of current to a light-emitting device depending upon a voltage applied to a gate of the drive transistor; a second transistor connected to the gate of the drive transistor and a second terminal of the drive transistor such that, when the second transistor is in an on state the drive transistor becomes diode-connected such that the gate and a second terminal of the drive transistor are connected through the second transistor; a light-emitting device that is connected at a first node to the second terminal of the drive transistor and at a second node to a first voltage supply; a third transistor that is connected between an initialization voltage supply and the first node of the light-emitting device, wherein a node N1 is a connection of the second terminal of the drive transistor, the first node of the light-emitting device, and the third transistor; and at least one capacitor having a first plate that is connected

Abstract: A pixel circuit for a display device includes a drive transistor configured to control an amount of current to a light-emitting device during an emission phase depending upon a voltage applied to a gate of the drive transistor; a second transistor connected to the gate of the drive transistor, wherein the second transistor is in an on state during a combined programming and compensation phase and in an off state during the emission phase, and when the second transistor is in an on state the drive transistor becomes diode-connected such that a gate and a second terminal of the drive transistor are connected through the second transistor; a third transistor connected to the second terminal of the drive transistor, wherein the third transistor is in an on state during the combined programming and compensation phase to permit a reference current to be applied through the drive transistor, and is in an off state during the emission phase to remove the reference current; and a capacitor having a first plate that is

Abstract: A pixel circuit for a display device includes a drive transistor configured to control an amount of current to a light-emitting device depending upon a voltage applied to a gate of the drive transistor; a second transistor connected to the gate of the drive transistor and a second terminal of the drive transistor, such that when the second transistor is in an on state the drive transistor becomes diode-connected such that the gate and the second terminal of the drive transistor are connected through the second transistor; a light-emitting device that is connected at a first node to a third terminal of the drive transistor and at a second node to a first voltage supply; a third transistor connected to the first node of the light-emitting device, which connects a data voltage to the first node of the light-emitting device; a fourth transistor that is connected between the second terminal of the drive transistor and a second voltage supply; and at least one capacitor having a first plate that is connected to the

Abstract: A display device includes a display panel including a plurality of sub-pixels; a shield electrode that is made of a first conductive and opaque material, is located directly on the display panel, overlaps a portion of the display panel in between a portion of the plurality of sub-pixels, and is connected to a touch sensor controller; an insulating layer that covers the shield electrode; a touch sensor electrode that is made of a second conductive and opaque material, is located on the insulating layer, overlaps a portion of the display panel in between some of the plurality of sub-pixels, and overlaps the shield electrode; and a feedline is connected to the touch sensor electrode, overlaps a portion of the display panel in between a portion of the plurality of sub-pixels that is not overlapped by the touch sensor electrode, and routes the touch sensor electrode to the touch sensor controller.

Abstract: A display device includes a display panel including a plurality of sub-pixels; a shield electrode that is made of a first conductive and opaque material, is located directly on the display panel, overlaps a portion of the display panel in between a portion of the plurality of sub-pixels, and is connected to a touch sensor controller; an insulating layer that covers the shield electrode; a touch sensor electrode that is made of a second conductive and opaque material, is located on the insulating layer, overlaps a portion of the display panel in between some of the plurality of sub-pixels, and overlaps the shield electrode; and a feedline is connected to the touch sensor electrode, overlaps a portion of the display panel in between a portion of the plurality of sub-pixels that is not overlapped by the touch sensor electrode, and routes the touch sensor electrode to the touch sensor controller.