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Polarizing plate and optical display including polarizing plate

A polarizer and polarizer technology, applied in the field of polarizers

Active Publication Date: 2021-05-18
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polarizers inevitably have haze in a limited range due to functional coatings

Method used

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  • Polarizing plate and optical display including polarizing plate
  • Polarizing plate and optical display including polarizing plate
  • Polarizing plate and optical display including polarizing plate

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0132]A black pigment was used as the pigment dispersant (A) containing 30% by weight of the pigment. Specifically, a ratio of silver-tin alloy (TMP-DC-1, Sumitomo Oosaka Cement Co., Ltd.) (solid content: 30%, silver to tin) was compared at the ratio listed in Table 1. A pigment dispersant (A-1) with a weight ratio of 7:3) was tested with a pigment dispersant (A-2) containing carbon black (CI-M-050, Sakata Co., Ltd.). mix. Using aliphatic polyurethane (B-1) (SUO-1000, Shina T&C Co., Ltd.) and acrylic pressure-sensitive adhesive resin (B-2) (WA-9263 , Wooin ChemTech Co., Ltd.) as the binder resin (B). In addition, use melamine curing agent (M60, thermosetting initiator, Wuying Chemical Technology Co., Ltd.) as initiator (D), use propylene glycol methyl ether acetate as solvent (E), and use 765W (Tego Co., Ltd. Co., Ltd.)) as the silane coupling agent (F).

[0133] Prepared by adjusting the amount (unit: weight %) of pigment dispersant (A), binder resin (B), initiator (D), s...

preparation example 2

[0137] A black pigment was used as the pigment dispersant (A) containing 30% by weight of the pigment. Specifically, a pigment containing a silver-tin alloy (TMP-DC-1, Sumitomo Osaka Cement Co., Ltd.) (solid content: 30%, weight ratio of silver to tin = 7:3) was dispersed at the ratios listed in Table 2 The agent (A-1) was mixed with the pigment dispersant (A-2) containing carbon black (CI-M-050, Sakata Co., Ltd.). Aliphatic polyurethane (SUO-1000, Xinna T&C Co., Ltd.) was used as the binder resin (B), and dipentaerythritol hexaacrylate (Hannong Chemical Co. Ltd.) was used as reactive unsaturated compound (C). In addition, photopolymerization initiator IGR 369 was used as the initiator (D), propylene glycol methyl ether acetate was used as the solvent (E), and 765W (Tego Co., Ltd.) was used as the silane coupling agent (F).

[0138] By adjusting the amount of pigment dispersant (A), binder resin (B), reactive unsaturated compound (C), initiator (D), solvent (E) and silane co...

example 1

[0142] Along a polyethylene terephthalate (PET) film (haze: 0.3%, DSG-17(Z) PET, DNP limited Company) on the periphery of the lower surface to form a printing pattern: the composition prepared in Preparation Example 1 was gravure-coated along the periphery of its lower surface. The printed pattern was composed of a two-layer structure including a first printed layer and a second printed layer, and was thermally cured at 85° C. for 2 minutes to form a printed layer (thickness: 2.4 μm). Coating of the composition for the printing layer is performed multiple times to form steps, thereby forming image 3 The curved fixing part shown.

[0143] A polyvinyl alcohol film (thickness: 60 μm, degree of polymerization: 2,400, degree of saponification: 99.0%, VF-PS6000, Kuraray Co., Ltd., Japan) was swelled in an aqueous solution at 25° C., and then Dyeing and stretching were performed at 30°C in a dyeing bath containing iodide ions. Next, the dyed polyvinyl alcohol film was further str...

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Abstract

A polarizing plate and an optical display including the polarizing plate. The polarizing plate is composed of a display area and a non-display area surrounding the display area. The polarizer includes: a polarizer; and a bonding layer, a first polarizer protective film and a functional coating layer stacked on one surface of the polarizer in sequence. The bonding layer includes a printing layer embedded in the bonding layer to constitute the non-display area. The polarizing plate has a haze measured on the functional coating of 0.1% to 5% and a reflectance difference between the display area and the non-display area of ​​2.4% or less, or The polarizing plate has a haze of 20% to 40% measured on the functional coating layer and a reflectance difference of 1.5% or less between the display area and the non-display area.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefits of Korean Patent Application No. 10-2017-0091214 filed with the Korean Intellectual Property Office on July 18, 2017 and Korean Patent Application No. 10-2018-59956 filed with the Korean Intellectual Property Office on May 25, 2018 rights, the entire disclosure of said Korean patent application is incorporated herein by reference. technical field [0003] The present invention relates to a polarizing plate and an optical display including the polarizing plate. Background technique [0004] An optical display is composed of a display area and a non-display area. The display area transmits light and displays images to be observed through the screen. The non-display area is disposed along the periphery of the display area to surround the display area, and is provided with a printed circuit board, a driving chip, etc. to display images. The non-display area is shielded from being see...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30G02F1/1335
CPCG02B5/30G02F1/133528H10K59/873H10K59/8793C03C17/34C03C2217/445C03C2217/479C03C2217/485G02B5/3033G02B6/0056C03C17/42H10K50/844H10K50/868
Inventor 黄智铉金镇佑申东允
Owner SAMSUNG SDI CO LTD
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