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Lamination transfer films for forming antireflective structures

A technology of anti-reflection and transfer film, applied in the direction of coating, lamination, application, etc., can solve the problems of low cost, difficult nanostructure, cost-effectiveness, etc.

Active Publication Date: 2016-08-31
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patterning or otherwise forming nanostructures and microstructures on large glass substrates can be difficult and not cost effective

Method used

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  • Lamination transfer films for forming antireflective structures
  • Lamination transfer films for forming antireflective structures
  • Lamination transfer films for forming antireflective structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0149] Example 1 - Unstructured Perylene Whiskers AR

[0150] Perylene coating

[0151] The base film was an unprimed 2 mil Kapton H film. The samples were placed in a batch coater with a baseline starting pressure of 7 x 10-7 Torr. Pyrene red pigment (PV Fast Red B, CAS#4948-15-6) The speed is deposited on the surface of the supplied flakes via vapor phase to achieve (200nm) total perylene thickness. The batch coater was then vented, the sample was placed in a batch oven and heated slowly to a maximum temperature of 268°C (6 hours) at 18 mTorr, the oven was then turned off, and the sample was slowly evacuated before being vented and removed. Allow to cool slowly to room temperature. Perylene whiskers in Figure 4 shown in .

[0152] backfill coating

[0153] A length of perylene coated film was taped to a 2 inch by 3 inch microscope slide. PermaNew 6000 (available from California Hardcoating Company, Chula Vista, CA) was diluted to 15%w in 80:20 IPA / butanol ...

Embodiment 2—600

[0165] Example 2—600nm Structured Perylene Whisker AR

[0166] structured template

[0167] The substrate was primed 0.002 inch (0.051 mm) thick PET. The replication resin was a 75 / 25 blend of SR399 and SR238 (both available from Sartomer USA, Exton, PA) with 1% Darocur 1173 (available from Ciba, Tarrytown, NY), 1.9% triethanolamine (purchased from Sigma-Aldrich, St.Louis, MO) and 0.5% % photoinitiator combination of OMAN071 (available from Gelest, Inc. Morrisville, PA). Replication of the resin was performed at a temperature of 137°F (58°C) at 20 feet per minute (6.1 meters per minute) using the replication tool. Radiation from a Fusion "D" (depth "D") lamp operating at 600 watts / inch was transmitted through the film to cure the resin while in contact with the tool. The replication tool was patterned with linear sawtooth grooves with a pitch of 600nm.

[0168] The replicated template film was primed with argon gas at a flow rate of 250 standard ml / min (SCCM), a press...

Embodiment 3

[0182] Example 3 - Unstructured QPAC AR

[0183] sacrificial layer coating

[0184] 5% by weight of QPAC 100 (poly(alkylene carbonate) copolymer in 1,3-dioxolane, Empower Materials, Inc., New Castle, DE )) solution in 30 cm 3 per minute to a 10.2 cm (4 inch) wide slot coating die in a continuous film coating apparatus. The solution was coated on the back of a release liner (glass liner, 50 microns thick, commercially available as "T50" from CP Films, Fieldale, VA). The coated web travels approximately 2.4 meters (8 feet) before entering a 9.1 meter (30 feet) conventional air flotation dryer with all 3 zones set at 65.5°C (150°F). The substrate was moved at a speed of 3.05 m / min (10 ft / min) to achieve a wet coating thickness of approximately 80 microns.

[0185] Sputter Etching AR Coating

[0186] The samples were sputter etched under the following conditions, and selected samples are shown in Table 2.

[0187] Table 2. Processing conditions for sputter etched sam...

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Abstract

The present disclosure relates to lamination transfer films for forming articles with antireflective stuctures and method of forming these lamination transfer films. A transfer film includes a carrier film, a sacrificial template layer disposed on the carrier film and having antireflective nanostructure template features, and a thermally stable backfill layer having a first surface conforming to the antireflective nanostructure template features and an opposing planar second surface.

Description

Background technique [0001] Nanostructures and microstructures on glass substrates are used in a variety of applications in displays, lighting, architecture and photovoltaics. In display devices, this structure can be used for light extraction or light distribution. In lighting fixtures, the structure can be used for light extraction, light distribution and decorative effects. In photovoltaic devices, the structure can be used for solar energy concentration and anti-reflection. Patterning or otherwise forming nanostructures and microstructures on large glass substrates can be difficult and not cost-effective. Contents of the invention [0002] The present disclosure relates to laminate transfer films for forming articles having antireflective structures and methods of forming these laminate transfer films. [0003] In one aspect, the transfer film includes a carrier film, a sacrificial template layer and a thermally stable backfill layer, the sacrificial template layer is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/118B32B37/02B32B38/10C03C17/30
CPCB32B38/10C03C17/30C03C2217/732C03C2217/77G02B1/02B32B37/025B32B2307/40B32B2551/00B32B2037/243Y10T428/24355Y10T156/10G02B1/118C23C16/0236C23C16/50G02B1/111C03C17/28
Inventor 迈克尔·本顿·弗里贾斯廷·P·迈尔奥勒斯特尔·小本森特里·O·科利尔米奇斯瓦夫·H·马祖雷克埃文·L·施瓦茨马丁·B·沃尔克
Owner 3M INNOVATIVE PROPERTIES CO