Polarizer lamination

• US 4,025,688 A
• Filed: 11/24/1975
• Issued: 05/24/1977
• Est. Priority Date: 08/01/1974
• Status: Expired due to Term

• Current Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Original Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Inventors: Trapani, Giorgio B., Nagy, Alexander W.
• Primary Examiner(s): Willis, Jr., P. E.
• Application Number:
  US05/634,635
• Time in Patent Office: 547 Days
• Field of Search: 428/1, 428/4 H, 428/350, 428/463, 428/462, 428/521, 428/461, 350/154, 350/155, 350/160 LC, 350/152, 252/408, 427/163
• US Class Current: 428/350
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2307/416 Reflective
• CPC Class Codes: B32B 2307/42 Polarizing, birefringent, filtering
• CPC Class Codes: B32B 2457/202 LCD, i.e. liquid crystal displays
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: Y10T 428/283 Water activated
• CPC Class Codes: Y10T 428/31678 Of metal
• CPC Class Codes: Y10T 428/31692 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31696 Including polyene monomers [e.g., butadiene, etc.]

Abstract

A novel reflective light-polarizing lamination comprising a light polarizer laminated to the matte surface of aluminum foil and useful in display cells for field-effect transition liquid crystal displays.

Claims

1. A light-polarizing light reflective lamination comprising a layer of aluminum foil having at least one matte surface and a light-polarizing film having first and second surfaces, said first surface being adhesively bonded with a transparent thermoplastic synthetic resin to said matte surface of said aluminum foil.

2. The lamination of claim 1 wherein said light-polarizing film comprises a stretched synthetic plastic material and said matte surface of said foil comprises grooves generally aligned with the stretch axis of said light-polarizing film.

3. The lamination of claim 1 wherein said aluminum foil is anodized.

4. The lamination of claim 1 which further comprises a support layer for said light-polarizing film, said support layer having first and second surfaces, said first surface of said support layer being adhesively bonded to said second surface of said light-polarizing film with a hydrophilic tie coat.

5. The lamination of claim 4 which includes a layer of adhesive on the second surface of said support layer whereby said lamination may be adhered to a field-effect transition liquid crystal device.

6. The lamination of claim 5 wherein said layer of adhesive is a water remoistenable adhesive.