Abstract:
Disclosed herein are OLED devices comprising waveguides including at least one waveguide layer comprising at least one inorganic nanoparticle and at least one binder and having an RMS surface roughness of less than about 20 nm. Lighting and display devices comprising such OLED devices are further disclosed herein as well as methods for making the waveguides.
Abstract:
An electrodeless organic light-emitting device (10) and LCD systems using same are disclosed. The electrodeless organic light-emitting device (10) includes an organic light-emitting structure (200) with at least one organic light-emitting layer (250), and an illuminator (100) operably disposed to illuminate the organic light-emitting structure (200) with redirected light (114D). The redirected light (114D) causes the one or more organic light-emitting layers (250) to emit light (254), which constitutes the illumination from the organic light-emitting device (10). An LCD system includes the electrodeless organic light-emitting device (10) operably arranged relative to an LCD panel to receive the illumination (254). The organic light-emitting layer (250) can be segmented, with each segment emitting a primary color of light. The organic light-emitting layer segments are aligned with the cells of the LCD panel to define pixels for forming a display image. The LCD system can be configured to have a non-black background color when in the “off” state. Methods of forming illumination and display light are also disclosed.
Abstract:
Disclosed herein are waveguides comprising at least one scattering surface, a periodicity ranging from about 0.5 μm to about 2 μm, and an RMS roughness ranging from about 20 nm to about 60 nm. Single-layer waveguides having a thickness ranging from about 1 μm to about 100 μm are disclosed herein as well as multi-layer waveguides comprising at least one high index layer and optionally at least one low index layer. Lighting and display devices and OLEDs comprising such waveguides are further disclosed herein as well as methods for making the waveguides.
Abstract:
An organic light emitting diode (OLED) device having enhanced light extraction is disclosed. The OLED device includes an upper waveguide structure having an organic layer and supports first guided modes, and a lower waveguide structure with a light-extraction waveguide that supports second guided modes substantially matched to the first guided modes. The lower waveguide structure includes a light-extraction waveguide interfaced with a light-extraction matrix. The light-extraction waveguide includes one or more light-redirecting features. The upper and lower waveguide structures are configured to facilitate mode coupling from the first guided modes to the second guide modes while substantially avoiding coupling the first guided modes to surface plasmon polaritons. The light traveling in the second guided modes is redirected to exit the OLED device by light-redirecting features of the light-extraction waveguide.
Abstract:
A quantum key generation system including two photon detector units, two photon entanglement chains extending between the two photon detector units, and a plurality of multicore fiber links each including at least two non-uniform cores structurally configured to provide non-uniform photon propagation delay. Each photon entanglement chain includes at least one quantum repeater structurally configured to entangle a pair of photons and first and second terminating quantum memories optically coupled the quantum repeater using the multicore fiber links such that photons received by the first and the second terminating quantum memories are entangled with photons entangled by the quantum repeater. The first and second terminating quantum memories of each of the two photon entanglement chains form first and second cross-chain quantum repeaters, and the first and the second photon detector units are structurally configured to receive the measurable entangled particles generated by the first and second cross-chain quantum repeaters, respectively.
Abstract:
Curved bezel-concealing display covers and display devices are disclosed. In one embodiment, a bezel-concealing display cover for coupling to a display device having a bezel and a display panel includes a curved perimeter portion having a first surface and a second surface, wherein the curved perimeter portion is configured to be offset from the bezel of the display device by a varying gap GA. The bezel-concealing display cover further includes an array of prisms on at least one of the first surface or the second surface of the curved perimeter portion. The array of prisms extends from an edge of the curved perimeter portion to a distance L. The array of prisms and the curved perimeter portion is configured to shift a portion of an image proximate the bezel produced by the display panel such that the shifted portion of the image appears over the bezel to an observer.
Abstract:
An antireflection article including: a transparent substrate having a refractive index of from 1.48 to 1.53; a binder layer associated with the substrate, the binder having a refractive index of from 1.55 to 1.75; and a nanoparticulate monolayer or near monolayer associated with the binder layer, the nanoparticulate layer having an effective refractive index less than the refractive index of binder. Methods of making and using the article are also disclosed.
Abstract:
An organic light emitting diode comprising a light extraction substructure and a diode superstructure is provided. The light extraction substructure comprises a light expulsion matrix distributed over discrete light extraction waveguide elements and a waveguide surface of the glass substrate. The light expulsion matrix is distributed at varying thicknesses to enhance the planarity of a diode superstructure-engaging side of the light extraction substructure and to provide light expulsion sites at the waveguide element termination points of the discrete light extraction waveguide elements. In operation, light originating in the organic light emitting semiconductor material of the diode superstructure is coupled to the discrete waveguide elements of the light extraction substructure as respective coupled modes characterized by an approximate coupling length defined as the propagation distance required for an optical mode to be coupled from the superstructure waveguide to one of the discrete waveguide elements of the light extraction substructure.
Abstract:
A touch system that employs interference effects is disclosed. The touch system includes first and second waveguides that have first and second optical paths that define an optical path difference. The first and second waveguides are configured so that a touch event deforms at least one of the waveguides in a manner that causes the optical path difference to change. The change in the optical path difference is detected by combining the light traveling in the two waveguides to form interfered light. The interfered light is processed to determine the occurrence of a touch event. The time-evolution of the deformation at the touch-event location can also be determined by measuring the interfered light over the duration of the touch event.