Abstract:
An apparatus and method for microstructures of a display device which focus external light toward light-absorption regions to enhance brightness and contrast of the display device. The display device includes a light absorption layer disposed to one side of a light emission layer. The light absorption layer includes light refracting structures and light absorption elements, wherein each of the light absorption elements is positioned in the light refracting structures. The light directing structures substantially direct incident light toward one of the plurality of light absorption elements positioned therein to reduce the reflection of external light.
Abstract:
A backlight assembly and a display device having the same are provided. The backlight assembly includes a first substrate, point light sources disposed upon the first substrate and an optical member covering the point light sources to guide light emitted from the point light sources, wherein the first substrate has recessed portions, and the point light sources are positioned within the recessed portions.
Abstract:
A light guiding bar includes first and second light incident portions, a light exit portion and a reflecting portion. The first and second light incident portions are at opposite ends of the light guiding bar and receive light. The light exit portion extends in a first direction, and partially totally reflects and partially emits the light according to an incident angle. The reflecting portion extends in the first direction, is adjacent to the light exit portion and includes a plurality of reflecting surfaces. Each of the reflecting surfaces has a wedge shape and reflects the light in a direction inclined with respect to a second direction substantially perpendicular to the first direction. The light incident into the first and second light incident portions and directly on the light exit portion is totally reflected by the light exit portion.
Abstract:
A light source lens includes a refraction surface having a concave portion proximate to a central axis of a light source lens. The central axis passes through a light source that is coupled to the light source lens. An angular distribution function F(θ′) of a first light emitted from the light source and refracted at the refraction surface at least approximately satisfies F ( θ ′ ) ∝ 1 cos 3 ( θ ′ ) , where θ′ is a latitude angle of the first light refracted at the refraction surface with respect to the central axis. The lens refracts a light emitted from the light source so that the resulting luminance at the upper area of the light source is more uniform.
Abstract translation:光源透镜包括具有靠近光源透镜的中心轴的凹部的折射面。 中心轴通过耦合到光源透镜的光源。 从光源发射并在折射表面折射的第一光的角度分布函数F(& tt;')至少近似满足F(θ),α1 cos 3(&Thetas;'),其中& '是折射表面相对于中心轴折射的第一光的纬度角。 透镜折射从光源发射的光,使得在光源的上部区域产生的亮度更均匀。
Abstract:
A backlight assembly and a display device having the same are provided. The backlight assembly includes a first substrate, point light sources disposed upon the first substrate and an optical member covering the point light sources to guide light emitted from the point light sources, wherein the first substrate has recessed portions, and the point light sources are positioned within the recessed portions.
Abstract:
Provided are a reflective unit using an electroactive polymer and a flexible display. The reflective unit includes: an electroactive polymer layer which becomes strained when a voltage is applied thereto by an electrode; a light reflecting unit reflecting external light and having reflecting cells arranged on the electroactive polymer layer to be spaced apart from one another wherein a distance between the reflecting cells is changed according to the strain of the electroactive polymer layer; and a light blocking layer preventing external light from being reflected by the light reflecting unit and having blocking cells arranged over the light reflecting unit to be spaced apart from one another.
Abstract:
Provided are a photonic crystal type color filter and a reflective liquid crystal display (“LCD”) device having the same. The photonic crystal type color filter includes a substrate, and a photonic crystal disposed on the substrate and having a two-dimensional (2D) grating structure.
Abstract:
Provided are a method of adjusting a photonic bandgap of a photonic crystal, a method of manufacturing a reflective color filter using the same, and a display device including the reflective color filter. The method of adjusting a photonic bandgap of a photonic crystal includes forming the photonic crystal having a photonic bandgap on a substrate, and changing the photonic bandgap by irradiating light onto the photonic crystal. In addition, the display device includes a backlight, a transflective liquid crystal panel including liquid crystal cells sealed between first and second substrates. Each liquid crystal cell corresponding to a pixel includes a transmissive area and a reflective area. A transmissive color filter is formed on the first substrate, which faces the backlight, and a reflective color filter is formed on each reflective area.
Abstract:
Provided are a display pixel using an electroactive polymer and a display apparatus employing the display pixel. The display pixel includes: an electroactive polymer layer, of which shape and/or size is displaced when a voltage is applied thereto; a diffraction grating, of which a pitch and a diffraction angle change according to a displacement of the electroactive polymer layer; and a liquid crystal layer disposed on the diffraction grating and controlling gradation according to a voltage applied thereto.
Abstract:
A laser television including a plurality of lasers for generating different wavelengths of interferential light; a scanner for displaying color images on a screen composed from the light; and a phase diffuser positioned between the lasers and the scanner for diffusing the light from the lasers according to the light's wavelength. The phase diffuser having a boundary surface, through which the light is outputted to the scanner. The boundary surface is slanted with a predetermined angle to regulate the range of diffraction of the light according to the wavelength.