Optical Sheet and Backlight Assembly Having the Same

• US 20070258268A1
• Filed: 04/13/2007
• Published: 11/08/2007
• Est. Priority Date: 05/08/2006
• Status: Abandoned Application

• Current Assignee: Miraenanotech Co., Ltd.
• Original Assignee: Miraenanotech Co., Ltd.
• Inventors: Kim, Sang Mook, Kim, Dong Ryoul, Lee, Ju Won, Kim, Cheul Young, Huh, Jong Wook
• Application Number:
  US11/734,841
• Publication Number:
  US 20070258268A1
• Time in Patent Office: Days
• US Class Current: 362/627
• CPC Class Codes: G02B 6/0053 Prismatic sheet or layer; Brightness enhancement element, sheet or layer

Abstract

Provided are embodiments of an optical sheet and backlight assemblies incorporating the optical sheet. The optical sheet can include a body and a plurality of protrusions. The protrusions are arranged on a surface of the body. A furrow pattern in which furrows are arranged is formed on the protrusion for scattering light.

Claims

1. An optical sheet, comprising:

a body; and

protrusions arranged on the body,

wherein a furrow pattern is formed in the protrusions.

2. The optical sheet according to claim 1, wherein the furrow pattern is formed on an upper surface of the protrusions.

3. The optical sheet according to claim 2, wherein the furrow pattern is further formed on a surface between the protrusions.

4. The optical sheet according to claim 1, wherein the furrow pattern comprises a plurality of irregularly arranged furrows.

5. The optical sheet according to claim 1, wherein the furrow pattern is disposed in a length direction of the protrusions.

6. An optical sheet, comprising:

a body for which light is introduced; and

a protrusion protruding to a predetermined height on the body,

wherein a furrow pattern for scattering light is formed in the protrusion.

7. An optical sheet, comprising:

a body for which light is introduced; and

a protrusion formed on the body and having at least two surfaces,

wherein at least one surface is rough.

8. The optical sheet according to claim 7, wherein the protrusion comprises two inclined surfaces and a furrow pattern in which a plurality of furrows are arranged at upper portions of the two surfaces.

9. The optical sheet according to claim 7, wherein the protrusion is arranged in stripes along a surface of the body at predetermined intervals, and a surface of the body located between the protrusions has a furrow pattern in which a plurality of furrows are formed.

10. The optical sheet according to claim 7, wherein the protrusion and the body are integrally formed.

11. The optical sheet according to claim 7, wherein a cross-section of the protrusion is a triangular shape or a trapezoidal shape.

12. An optical sheet for diffusing or condensing moving light, the optical sheet comprising:

a protrusion having a triangular cross-section or a trapezoidal cross-section,

wherein an upper surface of the protrusion comprises an irregularly formed surface of a predetermined curvature.

13. A backlight assembly comprising:

a lamp for generating light;

a light guide plate for guiding the light generated by the lamp; and

an optical sheet disposed on an upper surface of the light guide plate to diffuse or condense the light incident from the light guide plate,

wherein the optical sheet comprises a body and a protrusion protruding to a predetermined thickness from one side of the body, wherein the protrusion has a furrow pattern whose surface is formed rough.

14. A backlight assembly comprising:

a lamp for generating light;

a light guide plate for guiding the light generated by the lamp; and

an optical sheet disposed on an upper surface of the light guide plate to diffuse or condense the light incident from the light guide plate,

wherein the optical sheet has a protrusion disposed in a stripe shape, a furrow pattern in which a plurality of furrows are arranged formed in an upper surface of the protrusion, and where the furrow pattern is consecutively disposed in a length direction of the protrusion.

15. The backlight assembly according to claim 14, wherein the furrow pattern scatters light moving from the light guide plate.

16. The backlight assembly according to claim 14, further comprising a second or more optical sheet.

17. The backlight assembly according to claim 14, wherein the protrusion is disposed in a direction facing light moving from the light guide plate.