Title:
WIRE GRID POLARIZER AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2010/090268
Kind Code:
A1
Abstract:
Disclosed are a wire grid polarizer, which exhibits high polarization, p-polarized light transmittance, and s-polarized light reflectance in the visible light region, and the optical characteristics of which have low angular dependence and wavelength dependence, and a manufacturing method for the same.
A wire grid polarizer (10) comprises a light transmissive substrate (14), on the surface of which a multiplicity of convex strips (12), the width of which gradually narrows from the base to the apex, is formed parallel to one another with intervening flat spots (13) formed between the convex strips (12), and at a specified pitch (Pp), and a metallic layer (20), which covers the entire surface of a first side face (16) of the convex strip (12) and a portion of the flat spot (13) adjacent thereto, and either does not cover a second side face (18) of the convex strip (12) or covers a portion of a second side face (18); and a manufacturing method forms a metallic layer (20) by vapor depositioning a metal or metal compound from a direction that is substantially orthogonal to the length direction of the convex strips (12) and forms a 25‑40° angle relative to the height direction of the convex strips (12) on the side of the first side face (16), under conditions in which the deposition amount is 40‑60 nm.
Inventors:
KAIDA YURIKO (JP)
SAKAMOTO HIROSHI (JP)
MIYAGI TAKAHIRA (JP)
SAKURAI HIROMI (JP)
IKEDA YASUHIRO (JP)
SHIDOJI EIJI (JP)
SAKAMOTO HIROSHI (JP)
MIYAGI TAKAHIRA (JP)
SAKURAI HIROMI (JP)
IKEDA YASUHIRO (JP)
SHIDOJI EIJI (JP)
Application Number:
PCT/JP2010/051633
Publication Date:
August 12, 2010
Filing Date:
February 04, 2010
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
KAIDA YURIKO (JP)
SAKAMOTO HIROSHI (JP)
MIYAGI TAKAHIRA (JP)
SAKURAI HIROMI (JP)
IKEDA YASUHIRO (JP)
SHIDOJI EIJI (JP)
KAIDA YURIKO (JP)
SAKAMOTO HIROSHI (JP)
MIYAGI TAKAHIRA (JP)
SAKURAI HIROMI (JP)
IKEDA YASUHIRO (JP)
SHIDOJI EIJI (JP)
International Classes:
G02B5/30; G02F1/1335
Domestic Patent References:
| WO2006064693A1 | 2006-06-22 |
Foreign References:
| JP2005172955A | 2005-06-30 | |||
| JP2008256883A | 2008-10-23 | |||
| JP2008279597A | 2008-11-20 | |||
| JP2005070456A | 2005-03-17 | |||
| US20050046943A1 | 2005-03-03 | |||
| US20070152358A1 | 2007-07-05 | |||
| JP2006003447A | 2006-01-05 | |||
| US20080129931A1 | 2008-06-05 | |||
| JP2005181990A | 2005-07-07 | |||
| US20050123588A1 | 2005-06-09 | |||
| JP2009025051A | 2009-02-05 |
Other References:
See also references of EP 2395377A4
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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