White light generating unit, backlight assembly having the same and liquid crystal display device having the same

Abstract

A white light generating unit includes an LED structure and a lens structure. The LED structure generates a light. The lens structure has a convex lens or a concave lens. The lens structure has a fluorescent member that receives the light from the LED structure to emit a white light.

1 - 31 . (canceled) 
     
     
         32 . A white light generating unit comprising:
 a light emitting diode (LED) structure generating a light; and   a lens structure having a fluorescent member that generates a white light after receiving the light from the LED structure.   
     
     
         33 . The white light generating unit of  claim 32 , wherein the lens structure has an arch shape. 
     
     
         34 . The white light generating unit of  claim 33 , wherein the lens structure includes a flat surface facing the LED structure and an arch surface connected to the flat surface and facing the flat surface. 
     
     
         35 . The white light generating unit of  claim 32 , wherein the LED structure comprises a blue LED. 
     
     
         36 . The white light generating unit of  claim 35 , wherein the fluorescent member comprises a yellow fluorescent material. 
     
     
         37 . The white light generating unit of  claim 35 , wherein the fluorescent member comprises a red fluorescent material and a green fluorescent material. 
     
     
         38 . The white light generating unit of  claim 32 , wherein the LED structure comprises an ultraviolet (UV) LED. 
     
     
         39 . The white light generating unit of  claim 38 , wherein the fluorescent member comprises a red fluorescent material, a green fluorescent material and a blue fluorescent material. 
     
     
         40 . The white light generating unit of  claim 32 , wherein the lens structure comprises a convex lens or a concave lens. 
     
     
         41 . The white light generating unit of  claim 32 , wherein the lens structure comprises at least one selected from the group consisting of a diffusing agent and a curing agent. 
     
     
         42 . The white light generating unit of  claim 32 , further comprising a reflective band disposed on at least one face of the lens structure to reflect a light deviated from the lens structure back to the lens structure. 
     
     
         43 . A backlight assembly, comprising:
 a light generating unit including an LED structure having at least one LED that generates a light;   a light guiding plate that guides the light emitted from the light generating unit and emits the light, a receiving groove being formed on a side portion of the light guiding plate;   a lens structure having at least one lens disposed between the light generating unit and the light guiding plate, and having a fluorescent member that receives the light from the light generating unit to emit a white light, the lens structure being received in the receiving groove; and   a receiving container that receives the light generating unit, the light guiding plate, and the lens structure.   
     
     
         44 . The backlight assembly of  claim 43 , wherein the lens structure includes a flat surface facing the LED structure and an arch surface connected to the flat surface and facing the flat surface. 
     
     
         45 . The backlight assembly of  claim 44 , wherein the receiving groove has a recessed shape corresponding to the arch surface of the lens structure. 
     
     
         46 . The backlight assembly of  claim 43 , wherein the LED structure comprises a blue LED and the fluorescent member comprises a yellow fluorescent material. 
     
     
         47 . The backlight assembly of  claim 43 , wherein the LED structure comprises a blue LED and the fluorescent member comprises a red fluorescent material and a green fluorescent material. 
     
     
         48 . The backlight assembly of  claim 43 , wherein the LED structure comprises a UV LED and the fluorescent member comprises a red fluorescent material, a green fluorescent material and a blue fluorescent material. 
     
     
         49 . The backlight assembly of  claim 43 , wherein the lens structure comprises one of a convex lens and a concave lens. 
     
     
         50 . The backlight assembly of  claim 43 , further comprising a reflective band disposed on at least one face of the lens structure to reflect a light deviated from the lens structure back into the lens structure. 
     
     
         51 . The backlight assembly of  claim 46 , wherein the lens structure comprises at least one selected from the group consisting of a diffusing agent and a curing agent.