Patent application number | Description | Published |
20090186431 | LIGHT-EMITTING DEVICE AND ITS MANUFACTURING METHOD - In a light-emitting device and its manufacturing method, mounting by batch process with surface-mount technology, high light extraction efficiency, and low manufacturing cost are realized. The light-emitting device comprises semiconductor layers of p-type and n-type nitride semiconductor, semiconductor-surface-electrodes to apply currents into each of the semiconductor layers, an insulating layer which holds the semiconductor layers, and mount-surface-electrodes. The semiconductor layers has a non-deposited area where the other semiconductor layer is not deposited. The insulating layer has VIA which electrically connect the mount-surface-electrodes and the semiconductor-surface-electrodes. In the manufacturing process, firstly, semiconductor layers and semiconductor-surface-electrodes are deposited on the transparent crystal substrate, and by using build-up process, insulating layer and the mount-surface-electrodes are formed, and secondly, VIA are formed, and finally, the transparent crystal substrate is separated to get light-emitting device. Light can be extracted directly and efficiently from the semiconductor layers. With the mount-surface-electrodes, light-emitting device can be mounted by using surface mount technology. | 07-23-2009 |
20100200887 | LIGHT EMITTING DEVICE - A light emitting device including a thinned color conversion layer which emits a light with a minimized color ununiformity. The light emitting element includes an LED chip, a color conversion layer. The color conversion layer is made of a light-transmissive material containing a phosphor. The phosphor is excited by a light emitted from the LED chip to emit a light of a color having a wavelength longer than that of a luminescent color of the LED chip. The LED chip is provided at its top surface with a frame-shaped electrode which extends along its edge. The color conversion layer is formed on the top surface of the LED chip at an area surrounded by the frame-shaped electrode. | 08-12-2010 |
20100207134 | LED LIGHTING DEVICE - An LED lighting device comprises a plurality of light emitting units which is configured to emit visible light having different colors which are mixed with each other to produce a white light. Each the light emitting units is composed of an LED chip and a phosphor. The LED chip is configured to generate light. The phosphor has a property of giving off a light of a predetermined color when the phosphor is excited by the light from the LED chip. The LED chip is selected from a group consisting of a blue LED chip, a UV LED chip, ad a violet LED chip. Each the phosphor is selected to give off the light of a predetermined color different from one another. | 08-19-2010 |
20100219760 | LED LUMINAIRE - An LED luminaire is provided with a light emitting module composed of plural kinds of LEDs emitting lights of different colors, a lens unit having a lens for diffusing the mixed-color light from the light emitting module, a light output controller for controlling electric current fed to each of the LEDs, and a light sensor for sensing the light from the light emitting module. The light output controller performs feedback control on the electric current fed to each of the LEDs based upon light levels of the sensed light, so that the light emitted from the light emitting module has desired chromaticity. The lens unit contains a light guide for guiding the light from the lens to the light sensor and can guide the light from the light emitting module to the light sensor with a high efficiency. | 09-02-2010 |
20110006323 | LIGHTING DEVICE - A lighting device comprising an LED chip having a light emitting surface, and being configured to emit a light from the light emitting surface, a mounting substrate being configured to mount the LED chip, a first color conversion member comprising a first light transmissive material and a first phosphor, the first phosphor being excited by the light which is emitted from the LED chip, thereby giving off a first light having a wavelength which is longer than a wavelength of the light emitted from the LED chip, the first color conversion member being directly disposed on the light emitting surface of the LED chip, a second color conversion member comprising a second light transmissive material and a second phosphor, the second phosphor being excited by the light which is emitted from the LED chip, thereby giving off a second light having a wavelength which is longer than the wavelength of the light emitted from the LED chip, the second color conversion member being shaped to have a dome-shape, wherein the LED chip and the first color conversion member are disposed between the mounting substrate and the second color conversion member. | 01-13-2011 |
20110018012 | LED LIGHTING DEVICE - The LED lighting device in this invention comprises a light source, a first face sheet, and a reflection sheet. The light source comprises a plurality of LED chips which are configured to emit lights having wavelengths which are different from each other. The first face sheet has a rear surface. The rear surface is defined as a diffusing and reflecting surface which is being configured to diffuse and reflect the lights which are emitted from the LED chips. The first face sheet is provided with a plurality of apertures. The reflection sheet has a second reflecting surface. The second reflecting surface is configured to reflect the light which is reflected from the diffusing and reflecting surface of the first face sheet toward the first face sheet. Each the aperture is shaped to pass the light which is reflected from the second reflecting surface. Each the aperture is configured to prevent the light which is directly emitted by the light from being passed through the aperture without being subjected to any reflection. | 01-27-2011 |
20110037084 | LENS-MOUNTED LIGHT EMITTING UNIT - In a lens-mounted light emitting unit comprising LED elements of multiple light colors, narrow-angle light distribution is enabled, and color mixing properties are improved. The lens-mounted light emitting unit | 02-17-2011 |
20110249431 | LIGHT EMITTING DEVICE - A light emitting device includes: a light source unit which has a first and a second LED which are connected in parallel and emit lights of different colors, respectively. The lights of the first and the second LED are mixed to provide an emission light of the light source unit when an operating voltage is applied. The light source unit further has a resistor which is connected in series to the first LED to make forward current changing characteristics of the first and the second LED depending on change in the operating voltage to be different from each other, so that a required luminous flux-color temperature property, in which change in a color temperature of the emission light is made to depend on change in a luminous flux of the emission light, is obtained while the first and the second LED are turned on by applying the operating voltage. | 10-13-2011 |
20120153313 | LIGHT EMITTING DEVICE AND ILLUMINATION APPARATUS USING SAME - A light emitting device includes a solid light-emitting element; a mounting substrate mounting the solid light-emitting element thereon; an encapsulating member encapsulating the solid light-emitting element; and a lead frame electrically connected to the solid light-emitting element through a wire. The lead frame is arranged on a rear surface of the mounting substrate, and the mounting substrate includes a front mounting surface on which the solid light-emitting element is mounted. The front mounting surface having a smooth surface region covered with the encapsulating member. The mounting substrate further includes a wire hole through which the wire extends from the front mounting surface of the mounting substrate to the rear surface thereof. | 06-21-2012 |