POLARIZING PLATE, ANTI-REFLECTIVE LAMINATE, AND IMAGE DISPLAY SYSTEM

• US 20170068106A1
• Filed: 08/25/2016
• Published: 03/09/2017
• Est. Priority Date: 09/04/2015
• Status: Abandoned Application

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Murayama, Shunsuke, Yamashita, Tomohiro, Kimura, Makiko, Nakata, Mie
• Application Number:
  US15/246,746
• Publication Number:
  US 20170068106A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: G02B 27/286 for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 5/3083 Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001

Abstract

The present invention provides a polarizing plate and an image display system capable of lowering the reflectivity and improving the visibility of a public display. The present invention relates to a polarizing plate which is disposed on a visual recognition side of an image display devise that emits circularly polarized light and which converts the circularly polarized light into linearly polarized light. The polarizing plate preferably has a first optical element and a first polarizer in this order from an incident side of the circularly polarized light. The polarizing plate preferably has a λ/4 plate disposed closer to the visual recognition side than the first polarizer.

Claims

1. A polarizing plate which is disposed on a visual recognition side of an image display device that emits circularly polarized light and which convert s the circularly polarized light into linearly polarized light.

2. The polarizing plate according to claim 1, comprising a first optical element and a first polarizer in this order from an incident side of the circularly polarized light.

3. The polarizing plate according to claim 2, comprising a λ

/4 plate disposed closer to the visual recognition side than the first polarizer.

4. An anti-reflective laminate comprising the polarizing plate according to claim 1 and a transparent plate.

5. The anti-reflective laminate according to claim 4, where in the transparent plate comprises a surface treatment layer having a reflectivity of 3% or less.

6. An image, display system comprising:

an image display device that emits circularly polarized light; and

a polarizing plate which is disposed on a visual recognition side of the image display device and which converts the circularly polarized light into linearly polarized light.

7. The image display system according to claim 6, wherein the image display device comprises a cell substrate, and a second polarizer and a second optical element disposed from the cell substrate toward the visual recognition side;

and

the polarizing plate comprises a first optical element and a first polarizer in this order from an incident side of the circularly polarized light.

8. The image display system according to claim 7, wherein the polarizing plate comprises a first protective film on the visual recognition side of the first polarizer;

and

the image display device comprises a second protective film between the cell substrate and the second polarizer.

9. The image display system according to claim 8, wherein the second protective film contains an ultraviolet absorbent.

10. The image display system according to claim 6, comprising a transparent plate laminated onto the visual recognition side of the polarizing plate.

11. The image display system according to claim 10, comprising a λ

/4 plate between the polarizing plate and the transparent plate.