STACK-UP STRUCTURE OF AN OPTICAL PANEL AND MANUFACTURING METHOD THEREOF

• US 20130122312A1
• Filed: 09/06/2012
• Published: 05/16/2013
• Est. Priority Date: 11/16/2011
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Jiang, Yau-Chen, Huang, Pingping, She, Zhijun, Cai, Zhixiong
• Granted Patent: US 9,122,326 B2
• Time in Patent Office: Days
• US Class Current: 428/426
• CPC Class Codes: B32B 2307/40 having particular optical properties
• CPC Class Codes: B32B 37/003 to avoid air inclusion
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

The present disclosure relates to an optical panel, and more particularly, to a stack-up structure of an optical panel and the manufacturing method thereof, wherein the stack-up structure comprises: a first laminating element, which has a first laminating face; and a first protective layer, which is formed on the first laminating face of the first laminating element for flattening the first laminating face. The present disclosure allows a protective layer to be coated on a surface of a laminate to overcome unevenness problem on the surface of the laminating element, thereby avoiding generation of bubbles and enhancing the yield of products.

Claims

1. A stack-up structure of an optical panel, comprising:

a first laminating element having a first laminating face; and

a first protective layer formed on the first laminating face of the first laminating element for flattening the first laminating face.

2. The stack-up structure of the optical panel of claim 1, wherein the stack-up structure further comprises:

a second laminating element having a second laminating face; and

an adhesive layer positioned between the first protective layer and the second laminating face of the second laminating element for laminating the first laminating element and the second laminating element.

3. The stack-up structure of the optical panel of claim 2, wherein the stack-up structure further comprises a second protective layer formed on the second, laminating face of the second laminating element for flattening the second laminating face, wherein the second protective layer is positioned between the second laminating face of the second laminating element and the adhesive layer.

4. The stack-up structure of the optical panel of claim 3, wherein the first protective layer and the second protective layer are gap fillers.

5. The stack-up structure of the optical panel of claim 3, wherein the first protective layer and the second protective layer are ink layers or SiO2 layers.

6. The stack-up structure of the optical panel of claim 2, wherein the first laminating element is a cover glass, a plastic shell, or a display panel, and wherein the second laminating element is a touch inductive substrate, further wherein the cover glass is laminated with the touch inductive substrate to form a touch panel.

7. The stack-up structure of the optical panel of claim 2, wherein the adhesive layer is an optically adhesive layer.

8. A manufacturing, method of a stack-up structure of an optical panel, comprising:

forming a first protective layer on a first laminating face of a first laminating element for flattening the first laminating face.

9. The manufacturing method of the stack-up structure of the optical panel of claim 8, wherein the manufacturing method further comprises:

forming an adhesive layer on the first protective layer; and

laminating the first laminating face of the first laminating element with a second laminating face of a second laminating element by the adhesive layer.

10. The manufacturing method of the stack-up structure of the optical panel of claim 9, wherein the manufacturing method further comprises:

forming a second protective layer on the second laminating face of the second laminating element for flattening the second laminating face, further wherein the second protective layer is positioned between the adhesive layer and the second laminating face of the second laminating element.

11. The manufacturing method of the stack-up structure of the optical panel of claim 10, wherein the first protective layer and the second protective layer are formed using one or more of printing, spraying, and sputtering.

12. The manufacturing method of the stack-up structure of the optical panel of claim 10, wherein the first, protective layer and the second protective layer are gap fillers.

13. The manufacturing method of the stack-up structure of the optical panel of claim 10, wherein the first protective layer and the second protective layer are ink layers or SiO2 layers.

14. The manufacturing method of the stack-up structure of the optical panel of claim 9, wherein the first laminating element is a cover glass, a plastic shell or a display panel, and wherein the second laminating element is a touch inductive substrate, further wherein the cover glass is laminated with the touch inductive substrate to form a touch panel.

15. The manufacturing method of the stack-up structure of the optical panel of claim 9, wherein the adhesive layer is an optically adhesive layer.