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US6233031B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid crystal display device

Assignee: Alps Alpine Co Ltd
•
Filing: 1998-02-20
•
Granted: 2001-05-15
•
Expires: 2018-02-20
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Abstract

Abstract A method for producing a reflector has: a step for applying a photosensitive resin onto a base member to form a photosensitive-resin layer; a step for pressing a mold, having a fine uneven pattern on the surface thereof, to the photosensitive-resin layer so as to transfer the shape of the fine uneven pattern to the photosensitive-resin layer; a step for curing the photosensitive-resin layer by radiating a light beam to the photosensitive-resin layer while pressing the mold to the photosensitive-resin layer; a step for removing the mold from the cured photosensitive-resin layer; and a step for forming a metallic reflective film on the fine uneven pattern transferred to the surface of the cured photosensitive-resin layer. Since the fine uneven pattern is formed on the photosensitive-resin layer by pressing the mold thereto and is covered with the metallic reflective film, a reflection face of the resulting reflector can obtain the shape of the fine uneven pattern transferred from the mold.

Inventors

  • 👤 Yoshihiko Ishitaka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 01:05
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/133528; G02F1/133536; G02F1/136; G02F1/1362; G02F1/136227

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 159 words
A method for producing a reflector comprising the following steps: applying a photosensitive resin onto a base member to form a photosensitive-resin layer; pressing a mold, having a fine uneven pattern on the surface thereof, to said photosensitive-resin layer so as to transfer the shape of said fine uneven pattern to said photosensitive-resin layer; curing said photosensitive-resin layer by radiating a light beam to said photosensitive-resin layer while pressing said mold to said photosensitive-resin layer; removing said mold from said photosensitive-resin layer cured; and forming a metallic reflective film on said fine uneven pattern transferred to the surface of said photosensitive-resin layer cured, wherein said fine uneven pattern of said base member comprises: a plurality of ridges each having an almost constant height in one direction of said base member, with the heights and widths being set to random values for said ridges; and grooves each provided between said ridges and provided in said direction of said base member.
Claim 2
Independent Claim 159 words
A method for producing a reflector comprising the following steps: applying a photosensitive resin onto a base member to form a photosensitive-resin layer; pressing a mold, having a fine uneven pattern on the surface thereof, to said photosensitive-resin layer so as to transfer the shape of said fine uneven pattern to said photosensitive-resin layer; curing said photosensitive-resin layer by radiating a light beam to said photosensitive-resin layer while pressing said mold to said photosensitive-resin layer; removing said mold from said photosensitive-resin layer cured; and forming a metallic reflective film on said fine uneven pattern transferred to the surface of said photosensitive-resin layer cured, wherein said fine uneven pattern of said base member comprises: a plurality of ridges each having an almost constant height in one direction of said base member, with the heights and widths being set to random values for said ridges; and grooves each provided between said ridges and provided in said direction of said base member.
Claim 3
Dependent Claim 38 words
A method for producing a reflector as set forth in claim 1 , wherein said photosensitive resin comprises at least one resist selected from the group consisting of acrylic resists, polystyrene resists, azide rubber resists, and imide resists.
Claim 4
Dependent Claim 28 words
A method for producing a reflector as set forth in claim 1 , wherein said metallic reflective film comprises Al, an Al alloy, Ag, or an Ag alloy.
Claim 5
Dependent Claim 37 words
A method for producing a reflector as set forth in claim 1 , wherein after forming said photosensitive-resin layer on said base member, pre-baking is carried out in a temperature range of from 40 to 150° C.

References Cited (Backward Citations)

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US5128787A Cited
JPH04243226A Cited
US5204765A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2004-05-14 2004-11-13 2005-05-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2008-05-14 2008-11-13 2009-05-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2012-05-14 2012-11-13 2013-05-15 $7700.00 Window Closed / Lapsed

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