×

Backlight assembly of liquid crystal display

  • US 7,686,494 B2
  • Filed: 08/03/2006
  • Issued: 03/30/2010
  • Est. Priority Date: 08/04/2005
  • Status: Active Grant
First Claim
Patent Images

1. A backlight assembly having a plurality of light emitting diodes (LEDs) and a light guide plate for uniformly guiding light emitted from the LEDs to a liquid crystal substrate, the backlight assembly comprising:

  • a first reflective structure having at least one reflective surface facing a corresponding LED and tilted at a constant angle and a second reflective structure being independently disposed and spaced a distance from the first reflective structure,wherein each LED is disposed to emit light to a direction substantially perpendicular to a longitudinal bisector of the light guide plate toward each facing reflective surface and none of the LEDs are disposed to emit light to a direction substantially parallel to the longitudinal bisector of the light guide plate,wherein each LED corresponds to a single reflective surface so that the ratio of LEDs to reflective surfaces in the backlight assembly is 1 to 1,wherein the light emitted from each of the LEDs is reflected by the corresponding reflective surface to be incident on the light guide plate in a form of line-shaped light,wherein the backlight assembly includes at least four combinations of a LED and a corresponding reflective surface and the combinations are disposed substantially symmetrically about the longitudinal bisector of the light guide plate, andwherein all of the LEDs are arranged along a common line that extends along a side of the light guide plate, and that common line is substantially perpendicular to the longitudinal bisector of the light guide plate.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×