Lg Electronics Inc.

Younggil Yoo

Gunyoung Hong

Kyungpil Kim

Bokyung Kang

Minsung Kim

Dongwon Kang

Seungmi Baek

Joongnyon Kim

Jeongsoo Lee

Daehyun Park

Myeonchang Sung

An image projection apparatus is disclosed. The image projection apparatus according to an embodiment of the present disclosure includes: a light source configured to output blue light; and a phosphor wheel configured to output a plurality of colors of light based on the blue light incident upon rotation, wherein the phosphor wheel includes: a substrate; a yellow phosphor disposed in a first region on the substrate for output of yellow light; and a green phosphor disposed in a second region on the substrate for output of green light, wherein the green phosphor includes (Lu1−xYx)3Al5O12, with 0<x<0.8. Accordingly, highly efficient light output may be provided, and color purity may be improved.

Image projection device

A display panel and an image display apparatus including the same are disclosed. The display panel according to an embodiment of the present disclosure includes: a plurality of light sources configured to output blue light; a first color conversion layer configured to output first light based on the blue light from a first light source among the plurality of light sources; a second color conversion layer configured to output second light based on the blue light from a second light source among the plurality of light sources; a first color filter configured to output only red light in the first light from the first color conversion layer; and a second color filter configured to output only green light in the second light from the second color conversion layer. Accordingly, transmittance of output light may increase, and color gamut may be improved.

Display panel and image display apparatus including the same

Alighting apparatus can include a light emitting element that can irradiate light, and an optical conversion layer disposed on the light emitting element for converting the irradiated light. The optical conversion layer can include crystal grains of a first phosphor and crystal grains of a second phosphor, and the crystal grains of the first phosphor and the crystal grains of the second phosphor can be in mixed form in the optical conversion layer.

Lighting apparatus and method for manufacturing same

Disclosed are a phosphor, in particular, a red light emitting phosphor, a method for producing the same and a light emitting device package including the same. Provided is a red light emitting phosphor emitting light having a main absorption band in a blue wavelength range and a main peak in a red wavelength range, the red light emitting phosphor being represented by the following Formula 1.(SrEu)LuO&#x2003;&#x2003;[Formula 1]

Red light emitting phosphor, method for producing the same and light emitting device package including the same

Disclosed are phosphors and, more particularly, yellow light emitting phosphors and light emitting device packages using the same. The yellow light emitting phosphor includes a first phosphor including at least one of LuAlO:Ce, SrSiON, and &#x3b2;-type SiAlON and a second phosphor mixed with the first phosphor to form a mixture, the second phosphor including &#x3b1;-type SiAlON(Li-&#x3b1;-SiAlON) containing Li as a metal component, wherein the second phosphor emits light having a central wavelength in a range of 550 nm to 590 nm by being excited by near ultraviolet (UV) or blue light, The mixture of the first phosphor and the second phosphor is excited by the near UV or blue light to emit yellow light.

Yellow light emitting phosphor and light emitting device package using the same

Disclosed are phosphors and, more particularly, yellow light emitting phosphors and light emitting device packages using the same. The yellow light emitting phosphor includes a first phosphor to emit light having a central wavelength located within a band of 510 nm to 550 nm, a second phosphor adapted to be mixed with the first phosphor to emit light having a central wavelength located within a band of 560 nm to 600 nm, and a third phosphor adapted to be mixed with the first and second phosphors to emit light having a central wavelength located within a band of 610 nm to 630 nm, the third phosphor having a light absorption rate of 50% or less at a wavelength of 550 nm.

A display device is disclosed. Particularly, a display device including a wavelength conversion layer is disclosed. The display device includes a first light source including a substrate, a light emitting device disposed on the substrate and emitting light having a first wavelength band, and a wavelength conversion layer disposed on the light emitting device, at least partially absorbing the light having a first wavelength band, converting the absorbed light into a second wavelength band, and including at least two phosphors emitting substantially the same color.

Display apparatus including a wavelength conversion layer

A semiconductor device, and more particularly a light emitting device package usable with a lighting apparatus is disclosed. The light emitting device package comprises a package body, a light emitting device located on the package body, the light emitting device emitting light having a first wavelength band, a transparent substrate located over the light emitting device with a distance therebetween, a wavelength conversion layer located on the transparent substrate, wherein the wavelength conversion layer absorbs and converts at least a part of the light having the first wavelength band into light having a second wavelength band, and a color calibration layer located on the wavelength conversion layer, the color calibration layer calibrating color of the wavelength conversion layer.

Growing community of inventors

Seoul, South Korea

Younggil Yoo