IP Library Granted Patent US 7,106,398
Granted Patent B2
US 7,106,398 · App. 10/246,047 · Granted Sep 12, 2006

Technological machinery for production of polarizers

Assignee: Nitto Denko Corporation
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Quick Facts
Patent No.
US 7,106,398
App. No.
10/246,047
Granted
Sep 12, 2006
Kind
B2
Abstract

An apparatus for processing anisotropic films obtained from a liquid crystal solution containing at least one organic compound is provided. The apparatus comprises means for holding a substrate carrying an anisotropic film and a processing facility including at least one channel or a system of connected channels, wherein the channel(s) is (are) provided with an input connected to means for supplying a working fluid and an output connected to a rarefaction or vacuum system, and at least a part of the channel (s) is open on the side of processed film. Means for moving the processing facility is provided to move the processing facility to the substrate. Means for pressing the processing facility to the surface of the anisotropic film and/or substrate is also provided.

Claims (13)

1. An apparatus for processing anisotropic films, comprising:

means for holding a substrate carrying an anisotropic film,

a processing facility provided with at least one channel or a system of connected channels, wherein the channel or system of channels is provided with an input connected to means for supplying a working fluid and an output connected to a rarefaction or vacuum system, and at least a part of the channel or system of channels is open on the side of the film, wherein the channel or system of channels includes a plurality of extended walls surrounding the open part; and

means for pressing the processing facility to the surface of the anisotropic film and/or substrate to form at least one working region or a system of working regions defined by the open part of the channel or system of channels and hermetically sealed by the plurality of the extended walls;

wherein the entire processing facility is made of the same material.

2. The apparatus according to claim 1 , wherein the walls are made of an elastic material selected from the group consisting of vulcanized rubber, natural rubber, nitriles, thermoplastic elastomers, polyacrylics, thermosets, wax, felt, leathers, paper products, fibrous materials, plastics, thermoplastics, dense textile windings, sponge, foams, and human and animal tissue.

3. An apparatus for processing anisotropic films, comprising:

means for holding a substrate carrying an anisotropic film,

a processing facility provided with at least one channel or a system of connected channels, wherein the channel or system of channels is provided with an input connected to means for supplying a working fluid and an output connected to a rarefaction or vacuum system, and at least a part of the channel or system of channels is open on the side of the film, wherein the channel or system of channels includes a plurality of extended walls surrounding the open part; and

means for pressing the processing facility to the surface of the anisotropic film and/or substrate to form at least one working region or a system of working regions defined by the open part of the channel or system of channels and hermetically sealed by the plurality of the extended walls

wherein the channel or system of channels is connected to a working fluid dissolving the anisotropic film,

further comprising at least one channel or a system of channels connected to means for supplying a fluid containing divalent or trivalent metal ions.

4. The apparatus according to claim 3 , wherein the channel or system of channels for supplying a working fluid is made so that the working fluid is delivered from an input in parallel to all working regions of the channels.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2005
From: OPTIVA, INC.
To: INSOLVENCY SERVICES GROUP, INC.
Reel/Frame 016891/0382 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 8, 2005
From: INSOLVENCY SERVICES GROUP, INC.
To: NITTO DENKO CORPORATION
Reel/Frame 016835/0383 →
SECURITY AGREEMENT Recorded Jul 14, 2004
From: OPTIVA, INC.
To: J.P. MORGAN PARTNERS (BHCA), L.P., AS AGENT
Reel/Frame 014845/0939 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2002
From: BOBROV, YURI A.
To: OPTIVA, INC.
Reel/Frame 013601/0852 →
Priority Claims (1)
RU 2000117957 · Jul 11, 2000 · national
Continuity (2)
Continuation In Part 0984403000 · Apr 26, 2001
Related Publication 20030071940A1 · Apr 17, 2003