Antistatic light guide plate and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-9395480-B2
Application number	US-201314361022-A
Country	US
Kind code	B2
Filing date	Apr 12, 2013
Priority date	Feb 7, 2013
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A light guide plate (LGP) and a method for fabricating the same are disclosed, the LGP is electro-conductive. The fabrication method including the following steps: preparing an electro-conductive solution; making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly; drying the LGP which adsorbs the electro-conductive solution to form an electro-conductive film on the one or more surfaces. A method for fabricating the LGP is also disclosed in which electro-conductive organic macromolecular compound is used as a raw material. The effect of static charge on the LGP is avoided by the electro-conductive property of the LGP.

First claim

What is claimed is:

1. A light guide plate (LGP), comprising an electro-conductive and a side adhesive tape disposed on at least one side surface of the LGP, wherein the side adhesive tape comprises:
a reflective layer with a first surface of the reflective layer being attached to the at least one side surface of the LGP; and
an electro-conductive layer to release electrostatic charges generated on surfaces of the LGP, the electro-conductive layer being attached to a second surface of the reflective layer that is opposite to the first surface of the reflective layer.

2. The LGP of claim 1 , wherein an electro-conductive film made of an electro-conductive organic macromolecular compound is disposed on one or more surfaces of the LGP.

3. The LGP of claim 2 , wherein the electro-conductive organic macromolecular compound is polyaniline or polythiophene.

4. The LGP of claim 1 , wherein a material of the LGP is an electro-conductive organic macromolecular compound, or a material of the LGP comprises an electro-conductive organic macromolecular compound.

5. The LGP of claim 4 , wherein the electro-conductive organic macromolecular compound is at least one of polyaniline and polythiophene.

6. The LGP of claim 4 , wherein a fluorescent powder layer is coated on one or more surfaces of the LGP.

7. A method for fabricating a LGP, comprising steps of:
preparing an electro-conductive solution;
making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly; and
drying the LGP that adsorbed the electro-conductive solution, to form an electro-conductive film on the one or more surfaces thereof, wherein:
the step of preparing the electro-conductive solution comprises: dissolving an electro-conductive organic macromolecular compound and ink in an acidic solution, or dissolving an electro-conductive organic macromolecular compound in an acidic solution;
the step of making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly comprises: cleansing and then soaking the LGP in the electro-conductive solution.

8. The method of claim 7 , wherein,
the step of making one or more surfaces of a regular LGP adsorb the electro-conductive solution uniformly comprises: spraying the electro-conductive solution onto one or more surfaces of a cleansed regular LGP.

9. The method of claim 7 , wherein the electro-conductive organic macromolecular compound is polyaniline or polythiophene.

10. The method of claim 7 , further comprising a step of: attaching a side adhesive tape to at least one side surface of the LGP.

11. The method of claim 10 , wherein the side adhesive tape comprises an electro-conductive layer and a reflective layer, and the reflective layer is attached to the at least one side surface of the LGP.

12. A method for fabricating a LGP, comprising steps of:
providing an electro-conductive organic macromolecular compound or a mixture of an electro-conductive organic macromolecular compound and polymethylmethacrylate as a raw material and plasticizing the raw material;
filling the plasticized material into a mold;
pressure-holding the mold filled with the material; and
cooling the pressure-held mold.

13. The method of claim 12 , wherein the electro-conductive organic macromolecular compound is at least one of polyaniline and polythiophene.

14. The method of claim 12 , further comprising a step of: coating a fluorescent powder layer on one or more surfaces of the LGP.

15. The method of claim 12 , further comprising a step of: attaching a side adhesive tape to at least one side surface of the LGP.

16. The method of claim 15 , wherein the side adhesive tape comprises an electro-conductive layer and a reflective layer, and the reflective layer is attached to the at least one side surface of the LGP.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co
• Beijing Boe Technology Co Ltd

Inventors

• Tang Wulijibaier
• Gai Xin

Classifications

• C08J2300/12

  Polymers characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• G02B6/0093

  Means for protecting the light guide · CPC title

• G02B6/0065 Primary

  Manufacturing aspects; Material aspects · CPC title

• G02F2202/22

  Antistatic materials or arrangements · CPC title