Backlight assembly and display device having the same

A backlight assembly comprising:

• a light dispersion member including a lower face portion having ridges and grooves, the ridges and the grooves alternately arranged on the lower face portion;
• a light source having a plurality of light source members, a distance defined between light source members adjacent to each other, each light source member positioned directly under a respective ridge, the light source generating a light;
• and
• a reflection plate positioned under the light source, the reflection plate reflecting the light incident thereon toward the lower face portion of the light dispersion member,
• wherein an interval between a center of a first light source member and the reflection plate is from about 0.10 to about 0.25 times the distance.

A backlight assembly comprising:

• a light dispersion member including a lower face portion having ridges and grooves, the ridges and the grooves alternately arranged on the lower face portion;
• a light source having a plurality of light source members, a distance defined between light source members that are adjacent to each other, each light source member positioned under a respective ridge, the light source generating a light;
• and
• a reflection plate positioned under the light source, the reflection plate reflecting the light incident thereon toward the lower face portion of the light dispersion member;
• and
• wherein a first interval between a center of a first light source member and a ridge positioned directly over the first light source member is from about 0.2 to about 0.55 times the distance, and a second interval between the center of the first light source member and the reflection plate is from about 0.10 to about 0.25 times the distance.

A display device comprising:

• lamps generating a light, the lamps arranged substantially in parallel with each other, a distance defined between centers of lamps that are adjacent to each other;
• a light dispersion member including a lower face portion having ridges and grooves, the ridges and the grooves alternately arranged on the lower face portion, the light dispersion member positioned over the lamps, a first interval between each ridge and a center of each respective lamp having a size from about 0.2 to about 0.55 times the distance;
• a reflection plate positioned under the lamps, the reflection plate reflecting a light incident thereon toward the lower face portion of the light dispersion member, a second interval between each lamp and the reflection plate having a size from about 0.10 to about 0.25 times the distance;
• and
• a display panel positioned over the light dispersion member, the display panel displaying an image by using a light irradiated from the light dispersion member.

A backlight assembly comprising:

• light sources generating a light, the light sources extending in a first direction;
• a dispersion plate dispersing the light incident thereon, the dispersion plate having a ridge portion defining a first lower face facing the light sources, the ridge portion having ridges extending substantially in the first direction;
• and
• a fixing member supporting the dispersion plate thereon,
• wherein the dispersion plate has a second lower face supported on the fixing member, the second lower face having a substantially planar section.

A backlight assembly comprising:

• light sources generating a light, the light sources extending in a first direction;
• a dispersion plate dispersing the light incident thereon, the dispersion plate having a ridge portion defining an entire lower face of the dispersion plate, the ridge portion including ridges extending substantially in the first direction;
• and
• a fixing member supporting the dispersion plate thereon,
• wherein a central portion of the lower face faces the light sources and an edge portion of the lower face is supported on the fixing member.

A flat panel display device comprising:

• a flat display panel displaying an image;
• and
• a backlight assembly including light sources, a dispersion plate, and a fixing member, the light sources generating a light and extending in a first direction, the dispersion plate dispersing the light incident thereon, the dispersion plate having a ridge portion defining a first lower face facing the light sources, the ridge portion having ridges extending substantially in the first direction, the fixing member supporting the dispersion plate thereon,
• wherein the dispersion plate has a second lower face supported on the fixing member, the second lower face having a substantially planar section.