Light Guide Plate and Manufacturing Method thereof

• US 20090186152A1
• Filed: 08/24/2008
• Published: 07/23/2009
• Est. Priority Date: 01/17/2008
• Status: Abandoned Application

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Chou, Wen-Bin, Shiau, Tzeng-Ke, Hwang, Ping-Feng
• Application Number:
  US12/197,259
• Publication Number:
  US 20090186152A1
• Time in Patent Office: Days
• US Class Current: 427/163.200
• CPC Class Codes: G02B 6/0036 2-D arrangement of prisms, protrusions, indentations or roughened surfaces
• CPC Class Codes: G02B 6/0038 Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
• CPC Class Codes: G02B 6/0043 provided on the surface of the light guide
• CPC Class Codes: G02B 6/0065 Manufacturing aspects; Material aspects

Abstract

A manufacturing method of light guide plate (LGP) for manufacturing a LGP has a plurality of colloid dot like micro-optical structures on its surface. The method includes the following processes. First, a substrate with an embossing structure is provided. Then, a plurality of colloid dots are formed on a surface of the substrate by jetting. Afterwards, a drying process is performed to convert the colloid dots into the colloid dots like micro-optical structures. Finally, a LGP is manufactured by the manufacturing method.

Claims

1. A manufacturing method of a light guide plate, comprising:

providing a substrate with an embossing structure;

forming a plurality of colloid dots with different sizes on a surface of the substrate by jetting; and

solidifying the colloid dots to the surface of the substrate and converting the colloid dots into a plurality of dot like micro-optical structures.

2. The manufacturing method of light guide plate as claimed in claim 1, wherein the step of solidifying the colloid dots is performed by a drying treatment process.

3. The manufacturing method of light guide plate as claimed in claim 1, wherein the embossing structure is a structure with a plurality of V-cut grooves.

4. The manufacturing method of light guide plate as claimed in claim 1, wherein the embossing structure is a structure with a plurality of cylindrical mirrors.

5. The manufacturing method of light guide plate as claimed in claim 1, wherein the embossing structure is a structure with a plurality of pyramids.

6. The manufacturing method of light guide plate as claimed in claim 1, wherein the embossing structure is a structure with a plurality of cones.

7. The manufacturing method of light guide plate as claimed in claim 1, wherein the step of jetting is performed by an ink spraying process.

8. The manufacturing method of light guide plate as claimed in claim 1, wherein the colloid dots are distributed on the substrate in a random distribution, and a diameter of each colloid dot is different from the others.

9. The manufacturing method of light guide plate as claimed in claim 1, wherein the colloid dots are formed on the surface of the substrate according to a predetermined jetting position and a number of predetermined jetting times.

10. A light guide plate manufactured by the manufacturing method of light guide plate claimed in claim 1.