OPTICAL FILM ASSEMBLY AND DISPLAY DEVICE

• US 20100253885A1
• Filed: 06/18/2010
• Published: 10/07/2010
• Est. Priority Date: 06/17/2004
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Olson, David B., Goenner, Emily S., Jones, Clinton L., Kolb, Brant U., Hart, Shandon D., Cowher, John T.
• Granted Patent: US 8,168,271 B2
• Time in Patent Office: Days
• US Class Current: 349/96
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C08F 2/44 Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• CPC Class Codes: C08F 222/1025 of aromatic dialcohols
• CPC Class Codes: C08F 222/103 of trialcohols, e.g. trimethylolpropane tri(meth)acrylate
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: C09K 2323/03 Viewing layer characterised by chemical composition
• CPC Class Codes: C09K 2323/031 Polarizer or dye
• CPC Class Codes: G02B 5/02 Diffusing elements; Afocal elements
• CPC Class Codes: G02B 5/045 Prism arrays
• CPC Class Codes: G02B 5/124 plural reflecting elements forming part of a unitary plate or sheet
• CPC Class Codes: G02B 6/0053 Prismatic sheet or layer; Brightness enhancement element, sheet or layer
• CPC Class Codes: G02B 6/0065 Manufacturing aspects; Material aspects
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10S 977/773 Nanoparticle, i.e. structure having three dimensions of 100 nm or less
• CPC Class Codes: Y10S 977/778 within specified host or matrix material, e.g. nanocomposite films
• CPC Class Codes: Y10S 977/84 Manufacture, treatment, or detection of nanostructure
• CPC Class Codes: Y10S 977/932 for electronic or optoelectronic application
• CPC Class Codes: Y10S 977/939 Electron emitter, e.g. spindt emitter tip coated with nanoparticles
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
• CPC Class Codes: Y10T 428/24372 : Particulate matter
• CPC Class Codes: Y10T 428/31504 : Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31855 : Of addition polymer from unsaturated monomers

Abstract

Microstructured optical films, assemblies of films including at least one microstructured optical film, and (e.g. illuminated) display devices including a single microstructured optical film or assembly.

Claims

1. An assembly comprising a microstructured reflective polarizing film proximate a microstructured substantially non-polarizing optical film and the relative gain of the first and second film is at least 3.33.

2. A device comprising:

(a) a lighting device having a light-emitting surface; and

(b) the assembly of optical films of claim 1 disposed proximate the light-emitting surface.

3. The device according to claim 2, wherein the lighting device is a backlit display device.

4. The device according to claim 2, wherein the lighting device is a backlit liquid crystal display device.

5. The device according to claim 2, wherein the device is a handheld device, a computer display or a television.

6. The device of claim 2 wherein the device comprises an absorbing polarizer having a pass axis proximate a microstructured optical film comprising a pattern of substantially parallel prisms and the prisms are substantially orthogonal to the pass axis of the absorbing polarizer.