摘要:
A backlight unit for a liquid crystal display device includes a plurality of white LEDs on a PCB, along a length direction of the PCB, and emitting white lights, the plurality of white LEDs including first and second LEDs alternately arranged; and a plurality of optical sheets on a path of the white lights from the plurality of white LEDs to a liquid crystal panel, wherein the white light from the first LED and the white light from the second LED are substantially complementary in color to each other with respect to a target white light.
摘要:
A fluorescent screen for a color CRT including: a panel having a predetermined light transmittance: a black matrix formed on the inner surface of the panel for absorbing an external light; red, green and blue fluorescent material layers positioned on the upper surface of the panel where the black matrix is formed, for emitting light corresponding to each color; a red filter layer positioned between the red fluorescent material layer and the panel, for absorbing light having wave length except for the main light emitting region of the red fluorescent material layer; and a blue filter layer positioned between the red fluorescent material layer and the panel and the green fluorescent material layer and the panel, for absorbing light having a wave length except for the main light emitting region of the green fluorescent material layer and the blue fluorescent material layer.
摘要:
A flexible printed circuit board (PCB) for a light emitting diode backlight unit includes a flexible base film; a plurality of metal lines on a first surface of the flexible base film; a cover layer on the metal lines and covering a center portion of the first surface of the flexible base film; a first gold-plating pattern on the metal lines and at both ends of the first surface of the flexible base film; a metal pattern on a second surface of the flexible base film and including a first sub-pattern at one end of the second surface, a second sub-pattern at the other end of the second surface and a plurality of third-sub patterns between the first and second sub-patterns of the metal pattern; and a second gold-plating pattern on the metal pattern and including a fourth sub-pattern on the first sub-pattern, a fifth sub-pattern on the second sub-pattern, and a plurality of sixth-sub patterns each on the third sub-patterns, wherein a first groove between a first double-layered pattern of the first sub-pattern and the fourth sub-pattern and a second double-layered pattern of the third sub-pattern and the sixth sub-pattern, a second groove between a third double-layered pattern of the second sub-pattern and the fifth sub-pattern and a second double-layered pattern of the third sub-pattern and the sixth sub-pattern, and a third groove between adjacent second double-layered patterns respectively expose a portion of the second surface of the flexible base film.
摘要:
A flexible printed circuit board (PCB) for a light emitting diode backlight unit includes a flexible base film; a plurality of metal lines on a first surface of the flexible base film; a cover layer on the metal lines and covering a center portion of the first surface of the flexible base film; a first gold-plating pattern on the metal lines and at both ends of the first surface of the flexible base film; a metal pattern on a second surface of the flexible base film and including a first sub-pattern at one end of the second surface, a second sub-pattern at the other end of the second surface and a plurality of third-sub patterns between the first and second sub-patterns of the metal pattern; and a second gold-plating pattern on the metal pattern and including a fourth sub-pattern on the first sub-pattern, a fifth sub-pattern on the second sub-pattern, and a plurality of sixth-sub patterns each on the third sub-patterns, wherein a first groove between a first double-layered pattern of the first sub-pattern and the fourth sub-pattern and a second double-layered pattern of the third sub-pattern and the sixth sub-pattern, a second groove between a third double-layered pattern of the second sub-pattern and the fifth sub-pattern and a second double-layered pattern of the third sub-pattern and the sixth sub-pattern, and a third groove between adjacent second double-layered patterns respectively expose a portion of the second surface of the flexible base film.
摘要:
A backlight unit for a liquid crystal display device includes a plurality of white LEDs on a PCB, along a length direction of the PCB, and emitting white lights, the plurality of white LEDs including first and second LEDs alternately arranged; and a plurality of optical sheets on a path of the white lights from the plurality of white LEDs to a liquid crystal panel, wherein the white light from the first LED and the white light from the second LED are substantially complementary in color to each other with respect to a target white light.
摘要:
A semiconductor light emission device is disclosed. The semiconductor light emission device includes: a substrate; a current concentration preventing pattern formed in a mesh net shape on the substrate; an n-type clad layer formed on the substrate loaded with the current concentration preventing pattern; an active layer and a p-type clad layer sequentially formed on the n-type clad layer; an n-type electrode formed on a part of the n-type clad layer which is exposed by partially etching the p-type clad layer and active layer; and a p-type electrode formed on the p-type clad layer. The current concentration preventing pattern is formed in a double layer structure which includes a first layer formed from one material of SiO and SiN and on the substrate, and a second layer formed from a metal material and on the first layer.
摘要:
A semiconductor light emission device is disclosed. The semiconductor light emission device includes: a substrate; a current concentration preventing pattern formed in a mesh net shape on the substrate; an n-type clad layer formed on the substrate loaded with the current concentration preventing pattern; an active layer and a p-type clad layer sequentially formed on the n-type clad layer; an n-type electrode formed on a part of the n-type clad layer which is exposed by partially etching the p-type clad layer and active layer; and a p-type electrode formed on the p-type clad layer. The current concentration preventing pattern is formed in a double layer structure which includes a first layer formed from one material of SiO and SiN and on the substrate, and a second layer formed from a metal material and on the first layer.