Backlight assembly and liquid crystal display device having the same

• Main Author: KANG SUNG-YONG,PARK JONG-DAE,LEE JEOUNG-GWEN,WON YONG-GWANG
• Format: Patent
• Language: English
• Published: 15.11.2006
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A backlight assembly includes a receiving container, a plurality of lamps, and a diffusion plate. The lamps are received in the receiving container and are arranged substantially in parallel with each other to generate light. The diffusion plate on the lamps includes a plurality of light diffusing parts each having a plurality of embossed patterns corresponding to the lamps. Each of the embossed patterns has a circular shape or a polygonal shape in plan view and a substantially triangular cross-section or a semi-circular cross-section. Each of the embossed patterns is recessed or protruded from a surface of the diffusion plate to form a concave or convex shape, respectively. Therefore, a bright line of the backlight assembly is decreased to improve an image display quality of a display device.