Abstract: A light-emitting device includes red InGaN-based LED(s), green III-nitride-based LED(s), and blue III-nitride-based LED(s), which respectively emit red emitted light, green emitted light, and blue emitted light. Spectrally selective optical element(s), on which at least the red emitted light is incident, result in red output light having a red output color point, green output light having a green output color point, and blue output light having a blue output color point. The red, green, and blue output color points define a color gamut that encompasses at least an sRGB color gamut, in some examples even when corresponding color points of the red, green, and blue emitted light do not.

Abstract: A microlight emitting diode (LED) system and method of transmitting data are disclosed. The system includes either a first array that contains multiple subarrays or a second array. Each subarray includes multiple independently-addressable single color microLEDs that emit light of different colors and are independently modulated for data communication to another microLED array. The second array contains at least one independently-addressable polychromic microLED. Each polychromic microLED has multiple independently-addressable active regions that emit different colors and that are independently modulated for data transmission to the other microLED array. A photodetector array receives data as multi-color light from the other microLED array and has multiple photodetectors each tuned for a specific color.

Abstract: Optoelectronic structures and methods of assembly are described. In an embodiment, an optoelectronic structure includes a frontplane directly bonded to a backplane, and a cover window attached to the frontplane so that a cavity forms between the cover window and an optical layer of the frontplane. In an embodiment, the width of the cover window is less than the width of the backplane. In an embodiment, the width of the cover window is equal to the width of the backplane.

Abstract: An inventive light-emitting array includes multiple semiconductor light-emitting diodes (LEDs). Each LED of the array includes first and second doped semiconductor layers and an active layer them, and emits light at a nominal emission vacuum wavelength ?0 resulting from charge carrier recombination at the active layer. The active layer differs in chemical composition from the first and second semiconductor layers and is between 0.1 nm thick and 1 nm thick. Each LED exhibits a small-signal bandwidth greater than 0.10 GHZ, in some instances at a nonzero current density less than 2000 A/cm2. In some instances the doped semiconductor layers can be p-doped and n-doped GaN layers, and the active layer can be a monolayer of a III-nitride compound, e.g., InGaN.

Abstract: A virtual reality (VR) headset, system, and method of fabrication are disclosed. The VR headset includes a frame, a transparent display that includes an array of light-emitting diodes (LEDs), and a darkening layer having a controllable opacity, and a processor controlling the display and darkening layer. A proximity sensor detects a potential collision, and the opacity is changed from opaque to transparent in response to detection of the potential collision. The opacity is changed in response to activation of a virtual user input or predetermined eye movement.

Abstract: A microlight emitting diode (LED) system and method of transmitting data are disclosed. The system includes either a first array that contains multiple subarrays or a second array. Each subarray includes multiple independently-addressable single color microLEDs that emit light of different colors and are independently modulated for data communication to another microLED array. The second array contains at least one independently-addressable polychromic microLED. Each polychromic microLED has multiple independently-addressable active regions that emit different colors and that are independently modulated for data transmission to the other microLED array. A photodetector array receives data as multi-color light from the other microLED array and has multiple photodetectors each tuned for a specific color.

Abstract: A light-emitting device includes red InGaN-based LED(s), green III-nitride-based LED(s), and blue III-nitride-based LED(s), which respectively emit red emitted light, green emitted light, and blue emitted light. Spectrally selective optical element(s), on which at least the red emitted light is incident, result in red output light having a red output color point, green output light having a green output color point, and blue output light having a blue output color point. The red, green, and blue output color points define a color gamut that encompasses at least an sRGB color gamut, in some examples even when corresponding color points of the red, green, and blue emitted light do not.

Abstract: A virtual reality (VR) headset, system, and method of fabrication are disclosed. The VR headset includes a frame, a transparent display that includes an array of light-emitting diodes (LEDs), and a darkening layer having a controllable opacity, and a processor controlling the display and darkening layer. A proximity sensor detects a potential collision, and the opacity is changed from opaque to transparent in response to detection of the potential collision. The opacity is changed in response to activation of a virtual user input or predetermined eye movement.