Light guide panel, backlight unit and display apparatus

A backlight unit comprising:

• a light emitting unit which emits light;
• and
• a light guide panel which transmits uniformly the light emitted from the light emitting unit,
• wherein the light emitting unit comprises light sources disposed laterally at two side surfaces of the light guide panel,
• wherein the light guide panel includes:
• a first surface having a first pattern that increases luminance of the light emitted from the light emitting unit, and
• a second surface having a second pattern that increases uniformity of luminance of the light emitted from the light emitting unit,
• wherein the second pattern comprises structures having dimensions which increase toward a center portion of the light guide panel and decrease toward the light sources to adjust the uniformity of luminance of the light emitted from the light emitting unit, and
• the second pattern is formed up inside the light guide panel.

A light guide panel comprising:

• a first surface having a first pattern that increases luminance of light emitted from a light emitting unit comprising light sources disposed laterally at two side surfaces of the light guide panel;
• and
• a second surface having a second pattern that increases uniformity of luminance of the light emitted from the light emitting unit,
• wherein the first surface is opposite the second surface,
• the second pattern comprises structures having dimensions which increase toward a center portion of the light guide panel and decrease toward the light sources to adjust the uniformity of luminance of the light emitted from the light emitting unit, and
• the second pattern is formed up inside the light guide panel.

A display apparatus comprising:

• a display panel which displays an image;
• and
• a backlight unit which provides a light to the display panel,
• wherein the backlight unit comprises:
• a light emitting unit which emits the light;
• and
• a light guide panel which transmits the light emitted from the light emitting unit onto a surface of the display panel uniformly,
• wherein the light emitting unit comprises light sources disposed laterally at two side surfaces of the light guide panel, and the light guide panel includes:
• a first surface having a pattern that directs the light from the first surface toward the display panel, and
• a second surface having a pattern that scatters the light to an increasing degree as a distance from each of the light sources increases,
• the pattern of the second surface comprises structures having dimensions which increase toward a center portion of the light guide panel and decrease toward the light sources to adjust uniformity of luminance of the light emitted from the light emitting unit, and
• the pattern which is comprised in the second surface is formed up inside the light guide panel.