Patent application number | Description | Published |
20090097233 | LIGHT-EMITTING DEVICE, BACKLIGHT USING SAME, AND LIQUID CRYSTAL DISPLAY - A light-emitting device includes a semiconductor light-emitting element arranged on a substrate having internal wiring, a reflector arranged around the semiconductor light-emitting element, and a light-emitting portion, filled in the reflector, having a phosphor which emits visible light when excited by light from the semiconductor light-emitting element. Electrical conduction to the light-emitting element is obtained via the internal wiring of the substrate and the reflector. | 04-16-2009 |
20090115936 | BACKLIGHT AND LIQUID CRYSTAL DISPLAY USING SAME - A backlight unit | 05-07-2009 |
20090154195 | WHITE LIGHT-EMITTING DEVICE, METHOD FOR MANUFACTURING SAME, BACKLIGHT USING SAME, AND LIQUID CRYSTAL DISPLAY - A white light-emitting device | 06-18-2009 |
20090166652 | White LED, Backlight Using the Same, and Liquid Crystal Display Device - Disclosed are a white LED, which has color reproducibility comparable with that of a cold-cathode tube and improved brightness, and a backlight and a liquid crystal display device comprising the white LED. The white LED comprises at least one light emitting element selected from ultraviolet light emitting diodes, purple light emitting diodes, ultraviolet light emitting lasers, and purple light emitting lasers, and a phosphor layer. The phosphor layer comprises a green phosphor satisfying formula 1, a blue phosphor satisfying formula 2 or 3, and a red phosphor satisfying formula 4 or 5:
| 07-02-2009 |
20100102340 | SEMICONDUCTOR LIGHT EMITTING DEVICE, AND BACKLIGHT AND DISPLAY DEVICE COMPRISING THE SEMICONDUCTOR LIGHT EMITTING DEVICE - The present invention provides a semiconductor light emitting device comprising a light intensity difference reducing layer provided between an ultraviolet semiconductor light emitting element and a wavelength converting material layer, and a backlight and a display device comprising the semiconductor light emitting device. The semiconductor light emitting device is an LED light emitting device which has improved uniformity of emitted light and reduced non-uniformity of brightness and chromaticity of emitted light. The light emitting device according to the present invention is particularly suitable for use in various display devices, preferably, for example, in display devices in equipment where a reduction in size, a reduction in weight, a reduction in thickness, electric power saving, high brightness, and excellent color rendering properties are particularly required, for example, cellular phones, personal digital assistants, electronic dictionaries, digital cameras, computers, liquid crystal televisions (TVs), and peripheral devices of these devices. | 04-29-2010 |
20100237361 | WHITE LIGHT-EMITTING LAMP FOR ILLUMINATION AND ILLUMINATING DEVICE USING THE SAME - A white light emitting lamp | 09-23-2010 |
20100322275 | WHITE LIGHT-EMITTING LAMP AND ILLUMINATING DEVICE USING THE SAME - A white light-emitting lamp ( | 12-23-2010 |
20110006325 | PHOSPHOR AND LED LIGHT-EMITTING DEVICE USING THE SAME - An LED light emitting device is provided that has high color rendering properties and is excellent color uniformity and, at the same time, can realize even luminescence unattainable by conventional techniques. A phosphor having a composition represented by formula: (Sr | 01-13-2011 |
20110006334 | WHITE LED LAMP, BACKLIGHT, LIGHT EMITTING DEVICE, DISPLAY DEVICE AND ILLUMINATION DEVICE - A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/lm or less. In the white LED lamp, a backlight, and an illumination device using the white LED lamp an amount of UV light to be contained in the released light and an amount of heat to be generated from the lamp are decreased to be small. | 01-13-2011 |
20110031523 | WHITE LIGHT EMITTING DEVICE, BACKLIGHT, LIQUID CRYSTAL DISPLAY DEVICE, AND ILLUMINATING DEVICE - A white light emitting device includes a blue light emitting diode chip that emits blue light in a specific wavelength band, a first resin layer that seals the blue light emitting diode chip and includes a cured product of silicone resin, and a second resin layer that covers the first resin layer and includes phosphor powder, which absorbs the blue light and emits light in a specific wavelength band, and a cured product of transparent resin. The phosphor powder has a composition represented by the following Formula (1): | 02-10-2011 |
20130010456 | WHITE LED LAMP, BACKLIGHT, LIGHT EMITTING DEVICE, DISPLAY DEVICE AND ILLUMINATION DEVICE - A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/Im or less. | 01-10-2013 |