Granted Patent B2

US 7,108,385 · App. 10/728,828 · Granted Sep 19, 2006

Abstract

Claims (22)

1. An illumination module of light emitting elements, comprising:

a printed circuit board having a one-dimensional array of light emitting elements arranged thereon;

a reflecting layer on a surface of said printed circuit board having said light emitting elements arranged thereon, said reflecting layer to reflect light emitted from said light emitting elements; and

a plurality of resistors disposed on said printed circuit board under said reflecting layer.

2. The illumination module of light emitting elements of claim 1 , wherein said reflecting layer includes one or more of the following materials: high-gloss white paint, aluminum, copper, nickel, gold or titanium oxide.

3. A lateral backlight system with an illumination module of light emitting elements, comprising:

a light guide having at least a light-incident surface, a backside and a light-exiting surface, said backside having a pattern for light scattering formed thereon to direct light propagating in said light guide to emit from said light-exiting surface;

an illumination module of light emitting elements positioned beside said light-incident surface for projecting light thereupon, said illumination module of light emitting elements including a printed circuit board having a one-dimensional array of light emitting elements arranged thereon and a reflecting layer on a surface of said printed circuit board having said light emitting elements, said reflecting layer to reflect light emitted from said light emitting elements;

a reflective sheet positioned adjacent the backside of the light guide; and

a plurality of resistors disposed on said printed circuit board under said reflecting layer.

4. The lateral backlight system with an illumination module of light emitting elements of claim 3 , wherein said reflecting layer includes one or more of the following materials: high-gloss white paint, aluminum, copper, nickel, gold or titanium oxide.

5. The illumination module of light emitting elements of claim 3 , further comprising a prism sheet positioned adjacent the light-exiting surface of the light guide.

6. The illumination module of light emitting elements of claim 3 , further comprising a diffusion sheet positioned adjacent the light-exiting surface of the light guide.

7. An apparatus, comprising:

a liquid crystal panel;

a light guide having at least a light-incident surface, a backside and a light-exiting surface, said backside having a pattern for light scattering formed thereon to direct light propagating in said light guide to emit from said light-exiting surface, said light-exiting surface positioned adjacent said liquid crystal panel;

an illumination module of light emitting elements positioned beside said light-incident surface for projecting light thereupon, said illumination module of light emitting elements including a printed circuit board having a one-dimensional array of light emitting elements arranged thereon and a reflecting layer on a surface of said printed circuit board having said light emitting elements, said reflecting layer to reflect light emitted from said light emitting elements; and

a plurality of resistors disposed on said printed circuit board under said reflecting layer.

8. The apparatus of claim 7 , wherein said reflecting layer includes one or more of the following materials: high-gloss white paint, aluminum, copper, nickel, gold or titanium oxide.

9. The apparatus of claim 7 , further comprising a reflective sheet positioned adjacent the backside of the light guide.

10. The apparatus of claim 7 , further comprising a prism sheet positioned between said light-exiting surface positioned and said liquid crystal panel.

11. The apparatus of claim 7 , further comprising a diffusion sheet positioned between said light-exiting surface positioned and said liquid crystal panel.

Assignments (9)