346 results about "Emission efficiency" patented technology

The present invention relates to a novel organic compound and an organic electroluminescent device using same and, more specifically, to an organic compound that exhibits excellent electron transport ability, heat resistance, carrier transport capability, and luminescence, and an organic electroluminescent device in which the organic compound is included in one or more organic layers, thereby improving properties such as emission efficiency, driving voltage, and lifespan.

The embodiment of the invention provides a radio frequency power amplifier module, a manufacturing method, an antenna transceiver module and a base station, and relates to the technical field of communication equipment. The radio frequency power amplifier module comprises a first substrate; the power amplification component and the isolation component are arranged on the first substrate; the power amplification component is electrically connected with the isolation component through the first substrate; wherein the isolation part comprises a ferrite element and a first area of the first substrate, and the ferrite element is arranged in the first area of the first substrate. According to the embodiment of the invention, the cost of the radio frequency power amplifier module can be effectively reduced, the insertion loss between the power amplification component and the isolation component is reduced while the area of the radio frequency power amplifier module is reduced, and the emission efficiency of the emission path is improved.

To provide a laser diode chip capable of emitting RGB light with one chip and also capable of obtaining high emission efficiency even when a chip is miniaturized.SOLUTION: A laser diode chip has, on an n-type AlxGa1-xN layer (0≤x≤1), AlGaInN laser diode structures (B', G', R') emitting blue light, green light and red light, respectively. These laser diode structures have: an insulating film (703) having at least one rectangular opening (703a) on the n-type AlxGa1-xN layer; a polygonal truncated pyramid-shaped n-type AlyGa1-yN layer (0≤y≤1) (704) on the n-type AlxGa1-xN layer in a portion of the opening; active layers (705-707) each provided along a top surface and a side surface of the n-type AlyGa1-yN layer; p-type AlzGa1-zN layers (0≤z≤1) (708-710) covering each active layer; a p-side electrode (711) on the p-type AlzGa1-zN layers; and an n-side electrode (712) provided on the n-type AlxGa1-xN layer or a rear face thereof.SELECTED DRAWING: Figure 37B

Solid-state lighting devices including light-emitting diode (LED) chips and more particularly LED chip structures with electrode extensions and gradient via arrangements are disclosed. Electrode extensions and vias are formed on opposing sides of an active LED structure as part of anode and cathode connections. Gradient via arrangements include variable diameter and / or variable via pitch relative to electrode extensions and electrode pads. Additional structures include variable width electrode extensions relative to vias and / or electrode pads. Layouts of gradient vias and corresponding electrode extensions are disclosed for increasing uniformity in recombination efficiency across LED chip areas and for providing improvements to current injection, current droop, and overall emission efficiency.

An organic electroluminescence device includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing improved emission efficiency.

The invention relates to an electron source, a preparation method of the electron source, an electron gun and application of the electron source. The electron source comprises an optical fiber and an electron emission layer, the optical fiber comprises a fiber core used for transmitting laser and a wrapping layer wrapping the fiber core, and the end face of the light outlet end of the optical fiber and the extending direction of the fiber core are arranged at an angle. The electron emission layer is arranged on the end face of the light emitting end of the optical fiber, and the electron emission layer at least comprises an electron excitation layer covering the fiber core. The electron excitation layer comprises at least one of a zero-dimensional material, a one-dimensional material and a two-dimensional material. Low-dimensional materials such as zero-dimensional materials, one-dimensional materials or two-dimensional materials are adopted as materials of the electron excitation layer, the low-dimensional materials have the atomic-scale thickness, back-incident electrons can be emitted without in-vivo transmission, and the electron emission efficiency is high; and the low-dimensional material has the characteristics of no dangling bond, stable property, high melting point, difficulty in damage, good stability, long service life and the like.

A display device includes a structure where a first electrode is located in an area other than a depressed portion of an insulating layer and includes at least one trunk portion and at least one branch portion connected to the trunk portion, and thereby, is capable of improving emission efficiency or light extraction efficiency.

The invention relates to the technical field of light-emitting devices, in particular to a blue-violet light LED device containing a perovskite material, which comprises an ITO anode, a hole transport layer, a perovskite layer, an electron transport layer, an electron injection layer and a cathode material layer which are sequentially overlapped, the perovskite layer is a quasi-two-dimensional / three-dimensional heterojunction perovskite material and comprises a three-dimensional perovskite material and a quasi-two-dimensional layered structure material wrapping the surface of the three-dimensional perovskite material, the molecular formula of the three-dimensional perovskite material is Cs3Bi2Cl6Br3, and the molecular formula of the quasi-two-dimensional layered structure material is (4-F-PEA) 2PbCl4. The quasi-two-dimensional / three-dimensional heterojunction perovskite material is a blue-violet light perovskite material with high stability, high blue-violet light emission efficiency and high color purity, and is beneficial to improving the light-emitting color purity, the light-emitting efficiency and the environmental tolerance of a blue-violet light LED device and improving the performance of the blue-violet light LED device.

A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures vertically, and / or horizontally and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and / or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.

A light-emitting element includes a first electrode, a second electrode, and at least one functional layer disposed between the first electrode and the second electrode and including an amine compound represented by Formula 1. The light-emitting element may exhibit high emission efficiency and improved service life characteristics:

The present invention discloses an artificial intelligence-based method and system for predicting the electricity carbon emissions of an intelligent park, which relates to the field of carbon emissions prediction. The method includes: obtaining the external power purchase activity data and direct power consumption data of the intelligent park, and calculating the external power purchase carbon emissions and direct power consumption carbon emissions in the intelligent park by using the electricity carbon emission accounting standard to obtain the total carbon emissions; constructing a relationship model between the total carbon emissions and the energy consumption of electrical equipment, predicting the total electricity carbon emissions generated by the electrical equipment in the intelligent park under any operation strategy, and judging the emission efficiency corresponding to the total electricity carbon emissions; generating a power use allocation model based on the total electricity carbon emissions and the emission efficiency, and determining the electricity carbon emission reduction strategy in the intelligent park. The present invention can optimize the power use structure of the park according to the total electricity carbon emissions and the emission efficiency, and help the intelligent park achieve low-carbon goals and optimize energy use.