Abstract: A Light-Emitting Diode (LED) apparatus has one or more LED display modules. At least one of the one or more LED display modules has a plurality of LED display submodules. The plurality of LED display submodules are flexibly coupled to each other to form a flexible display surface.

Abstract: A Light-Emitting Diode (LED) apparatus has a power source outputting a source DC power at a source DC voltage, a plurality of LEDs drivable at a driving DC voltage lower than the source DC voltage, and an electrical path connecting the power source to each LED for powering the LED by the power source. Each electrical path comprises a first portion connected to the power source at the source DC voltage and a second portion connected to the LED at the driving DC voltage, and the length of the first portion is longer than that of the second portion.

Abstract: A Light-Emitting Diode (LED) apparatus has a power source outputting a source DC power at a source DC voltage, a plurality of LEDs drivable at a driving DC voltage lower than the source DC voltage, and an electrical path connecting the power source to each LED for powering the LED by the power source. Each electrical path comprises a first portion connected to the power source at the source DC voltage and a second portion connected to the LED at the driving DC voltage, and the length of the first portion is longer than that of the second portion.

Abstract: A lighting system has a power source formed by a solar panel and a battery assembly, a lighting assembly having a plurality of lighting devices arranged into a plurality of lighting groups, the light assembly having a predetermined maximum power, and a multiple-input power converter electrically coupled to the power source and the lighting assembly for powering the lighting assembly using the power source, and for charging the battery assembly using the solar panel. The multiple-input power converter is configured for calculating a power upper-bound based on the level of stored energy in the battery assembly and the length of a night time, and selecting at least a subset of the lighting groups and powering the selected lighting groups for illumination using the battery assembly for preventing exhausting the stored energy of the battery assembly before the battery assembly can be charged by the solar panel.

Abstract: A Light-Emitting Diode (LED) apparatus has a power source outputting a source DC power at a source DC voltage, a plurality of LEDs drivable at a driving DC voltage lower than the source DC voltage, and an electrical path connecting the power source to each LED for powering the LED by the power source. Each electrical path comprises a first portion connected to the power source at the source DC voltage and a second portion connected to the LED at the driving DC voltage, and the length of the first portion is longer than that of the second portion.

Abstract: A quantum-dot (QD) light-emitting diode (QLED) device has a multiple-layer active emission region. The multiple-layer active emission region has n QD layers interleaved with (n?1) quantum-barrier (QB) layers where n is a positive integer greater than one, such that each QB layer is sandwiched between two adjacent QD layers.

Abstract: A Light-Emitting Diode (LED) apparatus has at least one LED display module. Each LED display module has and integrates therein a plurality of LED display submodules, and at least one wireless communication unit. Each of the plurality of LED display submodules has and integrates thereon one or more LEDs. The LED apparatus also comprises a gateway in wireless communication with the at least one wireless communication unit for instructing the LED display submodules to adjust the lighting of the plurality of LEDs thereon.

Abstract: A Light-Emitting Diode (LED) system for facilitating the growth of a plant includes at least one LED array having one or more LEDs for emitting colored light spectra absorbable by a plant, a light detector for detecting light reflected from the plant, and a LED light driver electrically coupled to the at least one LED array and the light detector. The LED light driver receives electrical power from a power source and drives the at least one LED array using the received electrical power; receives from the light detector a signal indicative of the reflected light spectra, and controls the at least one LED array to adjust at least one of the intensities and the spectra of the light emitted from the at least one LED array, based on the received signal.

Abstract: A Light-Emitting Diode (LED) apparatus has one or more LED display modules. At least one of the one or more LED display modules has a plurality of LED display submodules. The plurality of LED display submodules are flexibly coupled to each other to form a flexible display surface.