TOUCH PANEL MODULE AND ELECTRONIC APPARATUS

• US 20160349883A1
• Filed: 08/11/2016
• Published: 12/01/2016
• Est. Priority Date: 03/25/2014
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: KIYOTO, Naoharu
• Granted Patent: US 10,101,861 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch panel module in which a conductive film in which a mesh conductive layer composed of a mesh-like metal electrode is formed on a support, a λ/4 plate, a polarizing plate, and a protective layer are arranged in this order. A λ/4 plate is further arranged on a side of the conductive film opposite to the protective layer. The touch panel module has a visible light diffuse reflectivity of 2% or less, which is measured from the protective layer.

Claims

1. A touch panel module

wherein a conductive film in which a mesh conductive layer composed of a mesh-like metal electrode is formed on a support, a λ

/4 plate, a polarizing plate, and a protective layer are arranged in this order,

a λ

/4 plate is further arranged on a side of the conductive film opposite to the protective layer, and

a visible light diffuse reflectivity measured from the protective layer is 0.2% or less.

2. The touch panel module according to claim 1,

wherein L* of a surface of the protective layer is 2 or less.

3. The touch panel module according to claim 1,

wherein an equilibrium moisture content of the λ

/4 plate is 2% or less.

4. The touch panel module according to claim 2,

wherein an equilibrium moisture content of the λ

/4 plate is 2% or less.

5. The touch panel module according to claim 1,

wherein the support has a retardation value of 40 nm or less at a wavelength of 550 nm in an in-plane direction.

6. The touch panel module according to claim 2,

wherein the support has a retardation value of 40 nm or less at a wavelength of 550 nm in an in-plane direction.

7. The touch panel module according to claim 3,

wherein the support has a retardation value of 40 nm or less at a wavelength of 550 nm in an in-plane direction.

8. The touch panel module according to claim 4,

wherein the support has a retardation value of 40 nm or less at a wavelength of 550 nm in an in-plane direction.

9. An electronic apparatus comprising:

the touch panel module according to claim 1.

10. An electronic apparatus comprising:

the touch panel module according to claim 2.

11. An electronic apparatus comprising:

the touch panel module according to claim 3.

12. An electronic apparatus comprising:

the touch panel module according to claim 4.

13. An electronic apparatus comprising:

the touch panel module according to claim 5.

14. An electronic apparatus comprising:

the touch panel module according to claim 8.

15. An electronic apparatus

wherein the touch panel module according to claim 1 is arranged on a liquid crystal display portion.

16. An electronic apparatus

wherein the touch panel module according to claim 2 is arranged on a liquid crystal display portion.

17. An electronic apparatus

wherein the touch panel module according to claim 3 is arranged on a liquid crystal display portion.

18. An electronic apparatus

wherein the touch panel module according to claim 4 is arranged on a liquid crystal display portion.

19. An electronic apparatus

wherein the touch panel module according to claim 5 is arranged on a liquid crystal display portion.

20. An electronic apparatus

wherein the touch panel module according to claim 8 is arranged on a liquid crystal display portion.