OPTICAL MEMBER FOR A TOUCH PANEL, AND METHOD OF MANUFACTURING THE SAME

• US 20110081520A1
• Filed: 03/13/2009
• Published: 04/07/2011
• Est. Priority Date: 03/14/2008
• Status: Abandoned Application

• Current Assignee: Hitachi Chemical Company Limited (Resonac Holdings Corp.)
• Original Assignee: Hitachi Chemical Company Limited (Resonac Holdings Corp.)
• Inventors: Yoshida, Takeshi, Mukai, Ikuo, Nojiri, Takeshi, Funyu, Keiko
• Application Number:
  US12/922,230
• Publication Number:
  US 20110081520A1
• Time in Patent Office: Days
• US Class Current: 428/141
• CPC Class Codes: G02F 1/1303 Apparatus specially adapted to the manufacture of LCDs
• CPC Class Codes: G02F 1/13312 Circuits comprising photodetectors for purposes other than feedback
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Abstract

An optical member for a touch panel of the invention includes a rubber elastic material film 1, in which one surface or both surfaces of the rubber elastic material have an irregular shape. The optical member for a touch panel of the invention can provide a touch panel that reduces errors even in environments having weak external light, enables input without using a special pen, and enables input even when an image in an LCD is displayed as the color black.

Claims

1. An optical member for a touch panel comprising a rubber elastic material film, wherein one surface or both surfaces thereof have an irregular shape.

2. The optical member according to claim 1, wherein the irregular shape has a maximum height from 0.01 to 50 μ

m.

3. The optical member according to claim 1, further comprising an intermediate layer provided over the surface of the rubber elastic material film having the irregular shape, the intermediate layer having a refractive index different from that of the rubber elastic material film.

4. The optical member according to claim 3, wherein the intermediate layer is adhesive.

5. A laminated body having a backing film and the optical member described in claim 1, wherein the optical member is laminated over the backing film.

6. A manufacturing method the optical member described in claim 1, the method comprising:

forming a rubber elastic material film over an irregular surface of a mold, the rubber elastic material film having a surface that has an irregular shape transferred from the irregular surface; and

peeling the rubber elastic material film from the mold.

7. A manufacturing method the optical member described in claim 2, the method comprising:

forming a rubber elastic material film over an irregular surface of a mold, the rubber elastic material film having a surface that has an irregular shape transferred from the irregular surface; and

peeling the rubber elastic material film from the mold.

8. A manufacturing method the optical member described in claim 3, the method comprising:

forming a rubber elastic material film over an irregular surface of a mold, the rubber elastic material film having a surface that has an irregular shape transferred from the irregular surface; and

peeling the rubber elastic material film from the mold.

9. A manufacturing method the optical member described in claim 4, the method comprising:

forming a rubber elastic material film over an irregular surface of a mold, the rubber elastic material film having a surface that has an irregular shape transferred from the irregular surface; and

peeling the rubber elastic material film from the mold.

10. A manufacturing method the optical member described in claim 5, the method comprising:

forming a rubber elastic material film over an irregular surface of a mold, the rubber elastic material film having a surface that has an irregular shape transferred from the irregular surface; and

peeling the rubber elastic material film from the mold.