Abstract: A solid state light source device and a dimming circuit are provided. The dimming circuit includes a rectifier circuit, a switch unit, and a control unit. The rectifier circuit is configured to convert an AC voltage signal to a rectified voltage signal. The switch unit is electrically connected between the rectifier circuit and a lighting module and configured to undergo switching according to a pulse width modulation signal to connect or disconnect the rectifier circuit and the lighting module. The control unit is electrically connected to the switch unit and configured to generate the pulse width modulation signal to control the switch unit.

Abstract: An LED vehicle headlight includes a lens, a reflector, a first light source, and a second light source. The lens has a focal plane. The reflector is located at a side of the lens, and the reflector is equipped with a first focal point and a second focal point, wherein the second focal point is located on the focal plane. The first light source has a first light-emitting surface confronting the lens. The second light source has a second light-emitting surface confronting the reflector. The first focal point is located on the second light-emitting surface, and the reflector is configured to reflect and focus light beams emitted from the second light-emitting surface onto the second focal point.

Abstract: A light-guiding pillar used in a vehicle lamp includes a major structure and a light-guiding structure. The major structure has a light incident surface, a light outgoing surface, an upper surface, and a bottom surface. The upper surface and the bottom surface are disposed between the light incident surface and the light outgoing surface, in which the upper surface and the bottom surface are opposite to each other. The major structure is configured to guide a portion of a light beam entering the major structure through the light incident surface to the light caving surface. The light-guiding structure is disposed on the upper surface and configured to guide another portion of the light beam entering the major structure through the light incident surface from the upper surface to the bottom surface with passing through the bottom surface.

Abstract: A lighting apparatus includes a circuit board, a lighting element and a lens structure. The lighting element is disposed on the circuit board. The lighting element includes a lighting top surface and a lighting lateral surface adjoined to the lighting top surface and the circuit board. The lighting top surface has a center and an optical axis passing through the center. The lens structure covers the lighting element to receive a light from the lighting element. The lens structure includes an outer surface having a total reflection portion and a light outgoing portion surrounding the total reflection portion. The optical axis passes through the total reflection portion. The total reflection portion is configured to totally reflect a portion of light from the center. The light outgoing portion is configured to allow another light emitted from the center to leave away from the lens structure.

Abstract: A light-emitting diode (LED) device including an LED module and a driver is provided. The LED module includes a voltage sensing module and an LED. The voltage sensing module generates a reference voltage. The driver includes a power converting module, a current processing module, a feedback module and a controller module. The power converting module converts an alternating current (AC) into a driving current for driving the LED to emit a light. The current processing module converts the driving current into a sensing voltage. The feedback module compares the sensing voltage with a reference voltage and outputs a level signal according to a magnitude relationship of the sensing voltage and the reference voltage. The controller module outputs a pulse width modulation (PWM) signal to the power converting module according to the level signal. The power converting module controls the magnitude of the driving current according to the PWM signal.

Abstract: A recessed light fixture is provided. The recessed light fixture includes a casing having an inner wall and an outer wall to define a space; a front flange extending outward from the casing and surrounding the space, wherein the front flange has a top surface and a bottom surface; and an intumescent material disposed in a first recess of the outer wall and/or disposed on the top surface of the front flange.

Abstract: An epitaxial structure includes a substrate, a first epitaxial layer and a second epitaxial layer. The substrate has a surface, and the first epitaxial layer is disposed over the substrate and defines a plurality of slanting air voids tapering away from the substrate and an opening over each of the slanting air voids. The second epitaxial layer is disposed on the first epitaxial layer and collectively defines the slanting air voids in a shape of trapezoid with the first epitaxial layer.

Abstract: A light source module includes a substrate, a first illumination element, a second illumination element and a third illumination element. The first illumination element includes a blue LED chip disposed on the substrate and a first wavelength converting layer that covers the blue LED chip, in which blue light emitted from the blue LED chip can be converted to light in the range of a first wavelength. The second illumination element includes a blue LED chip disposed on the substrate and a second wavelength converting layer that covers the blue LED chip, in which blue light emitted from the blue LED chip can be converted to light in the range of a second wavelength. The third illumination element includes a blue LED chip.

Abstract: The present invention provides a method for fabricating a fluoride phosphor. A first solution is formed by dissolving potassium fluoride (KF) and either K2MnF6 or KMnO4 in a hydrofluoric acid solution. A second solution is formed by mixing a surfactant and a silane. The first solution and the second solution are mixed to form a precipitate. The precipitate is collected after the first solution and the second solution are mixed. The present invention also provides a fluoride phosphor represented by the following formula: K2[SiF6]:Mn4+. The fluoride phosphor has a particle size in a range of about 1 ?m to about 10 ?m. The present invention further provides a light-emitting apparatus and backlight module employing the same.

Abstract: A flip-chip light emitting diode chip includes a first semiconductor structure, which includes a P-type semiconductor layer, a N-type semiconductor layer, openings, a reflective layer, a barrier layer, a passivation layer, and an electrical contact layer. The openings penetrate the P-type semiconductor layer and a part of the N-type semiconductor layer so as to partially expose the N-type semiconductor layer. The reflective layer is disposed on the P-type semiconductor layer. The barrier layer is disposed on the reflective layer, and the area of the barrier layer is smaller than that of the reflective layer therefore the reflective layer is exposed from the barrier layer. The passivation layer is disposed on the barrier layer and partially fills in the openings. The electrical contact layer disposed on the passivation layer partially penetrates through the passivation layer to contact the exposed part of the N-type semiconductor layer.

Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a phase control circuit, a processing circuit and a first driving circuit. The rectifying circuit is configured to convert an input AC voltage to a rectified voltage signal. The phase control circuit is configured to receive the rectified voltage signal and a dimming command, and output a control voltage signal correspondingly in which the phase control circuit controls a phase delay angle of the control voltage signal according to the dimming command. The processing circuit is configured to receive the control voltage signal and adjust a first driving voltage signal according to the phase delay angle. The first driving circuit is configured to receive the first driving voltage signal to drive a first lighting module.

Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a first driving circuit, and a processing circuit. The rectifying circuit is configured to convert an AC voltage to a rectified voltage. The first driving circuit is configured to receive the rectified voltage to provide a first current so as to drive a first lighting module. The first driving circuit includes a first switch. The first switch turns ON or OFF selectively according to a first control voltage signal so as to control the first current. The processing circuit is configured to receive a dimming command, and adjust the first control voltage signal according to the dimming command. The first control voltage signal is configured to control a phase delay angle and a duty cycle of the first current.

Abstract: A light emitting diode (LED) package includes a light element, a light transferring layer disposed on the light element, a packaging layer enclosing the light transferring layer, a white wall surrounding the packaging layer and a diffusion film disposed on the packaging layer. The light transferring layer has a light outlet face, a light inlet face opposite to the light outlet face and a peripheral side. The light inlet face faces the light element. The white wall surrounds the peripheral side that is enclosed by the packaging layer.

Abstract: A manufacturing method of a LED display is provided. A temporary substrate is provided, wherein the temporary substrate has a first adhesive layer and a plurality of first, second and third LED chips mounted on the first adhesive layer. A first transparent substrate is provided, the transparent substrate has a plurality of pixels disposed thereon, and each of the pixels comprises a first sub-pixel, a second sub-pixel and a third sub-pixel respectively surrounded by a light-insulating structure. Then, the temporary substrate and the first transparent substrate are bonded together, such that each of the first, second and third LED chips is correspondingly mounted in each of the first sub-pixels, the second sub-pixels and the third sub-pixels. After that, the temporary substrate is removed. A LED display manufactured by said method is also provided.

Abstract: A light-emitting device is provided, including: a substrate; a reflective layer disposed on the substrate; a patterned contact layer disposed on the reflective layer; a light-emitting unit disposed on the patterned contact layer; a first electrode disposed on a top surface of the light-emitting unit; and a second electrode disposed on a bottom surface of the light-emitting unit; wherein a projection of the first electrode on the substrate and a projection of the patterned contact layer on the substrate are complementary to each other.

Abstract: An LED chip package includes a substrate having a metal terminal (gold finger structure). A LED chip set is composed of a plurality of LED chips formed in one piece, and has a plurality of light-emitting areas which are separated from each other. The LED chip set is disposed on the substrate and electrically connected to the metal terminal.

Abstract: The disclosure provides a light-emitting diode which includes a first semiconductor layer, a light-emitting layer, a second semiconductor layer, a reflective layer, a current blocking layer and a current spreading layer. The light-emitting layer is positioned on the first semiconductor layer, and the second semiconductor layer is positioned on the light-emitting layer. The reflective layer is positioned on a part of the second semiconductor layer, so as to expose another part of the second semiconductor layer. The current blocking layer covers the reflective layer, and the current spreading layer covers the exposed second semiconductor layer and current blocking layer.

Abstract: A lighting apparatus includes a wavelength converting apparatus. The wavelength converting apparatus includes a hollow tube and a wavelength converting material. The hollow tube has an accommodating chamber. The wavelength converting material is positioned in the accommodating chamber.

Abstract: A light-emitting element is provided, including: a light-emitting unit sequentially comprising a first-type semiconductor layer, a light-emitting layer and a second-type semiconductor layer, wherein the light-emitting unit has an opening through the second-type semiconductor layer and the light-emitting layer to expose a portion of the first-type semiconductor layer; a current-conduction layer disposed on the second-type semiconductor layer; a first electrode disposed on the current-conduction layer and exposing a portion thereof; a distributed Bragg reflector disposed on the first electrode and covering the exposed portion of the current-conduction layer; and a second electrode disposed on the distributed Bragg reflector and filling the opening to electrically connect to the first-type semiconductor layer.

Abstract: A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.