摘要:
A conformal thin-film phosphor layer is disposed over a surface of a hemispherical lens, a Fresnel lens, or a microlens array, thereby forming a phosphor-coated light extraction structure. Also disclosed is a phosphor-converted photonic crystal light emitting device that incorporates a thin-film phosphor layer. A wafer-level packaging process incorporating a thin-film phosphor layer is also disclosed herein.
摘要:
A thin-film phosphor layer can be formed by an improved deposition method involving: (1) forming a phosphor powder layer that is substantially uniformly deposited on a substrate surface; and (2) forming a polymer binder layer to fill gaps among loosely packed phosphor particles, thereby forming a substantially continuous layer of thin film.
摘要:
A bootstrap circuit is utilized in a bulk circuit using an NMOS transistor as a power switch. The bootstrap circuit includes a first PMOS transistor coupled between an internal power source and an offset capacitor, and a second PMOS transistor coupled between the gate of the first PMOS transistor and the offset capacitor, and an NMOS transistor coupled between the gate of the first PMOS transistor and ground. When the power switch is turned on, the second PMOS transistor is turned on for turning off the first PMOS transistor. When the power switch is turned off, the NMOS transistor is turned on for turning on the first PMOS transistor.
摘要:
A wild seaweed, like sea lettuce, is picked and germ cells are released from the seaweed. The germ cells then obtain adherence and are sprouted into youngs of the seaweed so that the seaweed can be cultivated artificially and productively and can be supplied as a material for biomass energy.
摘要:
A package of a semiconductor device with a flexible wiring substrate and a method thereof are provided. The package of the semiconductor device includes a semiconductor substrate with at least one pad on a surface thereof, a bump bonded to the pad, an adhesive layer on the bump, and a flexible wiring substrate having at least one contact section being electrically connected with the bump by the adhesive layer. The present invention makes the flexible wiring substrate directly conductively attached onto the semiconductor substrate. The package size is shrunk and the cost down can be obtained.
摘要:
A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically coupled with a plurality of current sources with different weights. Therefore, the numbers of the resisters and current sources can be reduced, and efficient power saving and the high-speed operation can be achieved.
摘要:
A light guide bar with a patterned surface for a flicker free light source comprising a light emitting diode (LED) light source disposed on each end of the light guide bar is disclosed. A light diffusing pattern is disposed on a light emitting surface. The light diffusing pattern comprises a plurality of notches that are smallest closest to the LED light sources and largest in the center of the light guide bar. A light reflecting pattern is disposed on a light reflecting surface opposite the light diffusing pattern on the light emitting surface. Light emitted by the LED light sources enters the light guide bar through the ends. The light travels through the light guide bar at various angles and is reflected by the light reflecting pattern on the light reflecting surface. The reflected light is then emitted through the light diffusing pattern on the light emitting surface.
摘要:
A light emitting diode linear light which is high powered and has enhanced uniformity and illumination and is safe to humans, environmentally friendly, and possesses an extremely long lifetime is disclosed. The LED lighting comprises a polygonal light pipe, a light reflector panel, two LED packages, two LED PCBs, a plurality of heatsinks, a plurality of heat pipe assemblies, a protective housing, a back cover, and a diffuser cover. The polygonal light pipe comprises a transparent or semitransparent material. A patterned surface on the light emitting surface of the light pipe diffuses the emitted light. A patterned surface on the surface of the light pipe opposite the light emitting surface reflects light. The plurality of heat pipe assemblies comprise heatsinks and heat pipes. The heat pipes are hollow pipes that are filled with a liquid such as water or coolant and cooperate with the heatsinks to dissipate heat.
摘要:
A method of encapsulating an organic light-emitting device is disclosed, wherein the device includes a light-emitting portion and an electrical contact portion, the method including forming a polymer layer over the light-emitting portion and the electrical contact portion of the device; forming a separation in the polymer layer between a portion of the polymer layer disposed over the light-emitting portion of the device and a portion of the polymer layer disposed over the electrical contact portion of the device; adhering a film removal structure to the portion of the polymer layer disposed over the electrical contact portion of the device; and removing the film removal structure, thereby causing the removal of the portion of the polymer layer disposed over the electrical contact portion of the device.
摘要:
A cooling system is for cooling a lamp module within a projection apparatus and includes an axial fan unit for mounting within the projection apparatus, defining an axial direction and having an air discharging side to permit an airflow flow therethrough, the airflow defining a flow direction that cooperates with the axial direction to define an angle therebetween. The system further includes a flow-guiding duct that has an air inlet located adjacent to the discharging side of the axial fan unit and that is oriented toward the angle in such a manner to define the flow direction for guiding the airflow toward the lamp module.