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Optical laminate

An optical layer and combination technology, applied in optics, optical components, coatings, etc., can solve problems such as display defects, achieve the effect of improving display quality and solving visibility problems

Pending Publication Date: 2022-02-25
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since a polarizing plate is not applied in this method, display defects such as diffraction fringes are observed on the viewer-side surface of the OLED display device

Method used

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Examples

Experimental program
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Embodiment

[0230] Example. Optical Laminate and Display Device

[0231] Pressure-sensitive adhesive composition and pressure-sensitive adhesive layer

[0232] Based on 100 parts by weight of the pressure-sensitive adhesive resin (LC-6BB, containing n-butyl acrylate in an amount of about 94% by weight and acrylic acid in an amount of about 6% by weight, and having a wavelength of about 1.46 for light with a wavelength of 632.8nm Refractive index), the pressure sensitive adhesive composition was prepared by blending the following components at the following levels:

[0233] Light-scattering particles (Tospearl 145, Momentive Performance, refractive index with respect to light having a wavelength of 632.8 nm: about 1.43, D50 particle size: about 4.5 μm) 10 parts by weight

[0234] 0.93 parts by weight of crosslinking agent (T-706B, Soken) based on toluene isocyanate

[0235] 0.005 parts by weight of crosslinking agent (T-743L, Soken) based on epoxy compound

[0236] Silane coupling agent...

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Abstract

The present application relates to an optical laminate. The optical laminate of the present application may, when applied to an OLED display device, solve visibility issues caused by the reflection of external natural light incident on the device, and also may improve the display quality thereof.

Description

technical field [0001] This application claims the benefit of the filing date of Korean Patent Application No. 10-2019-0112705 filed with the Korean Intellectual Property Office on September 11, 2019, the disclosure of which is incorporated herein by reference in its entirety. [0002] This application relates to optical laminates. Background technique [0003] In an organic light emitting diode (OLED) display device, external incident light is reflected from the device, so that there is a problem that the visibility of the device is reduced. In order to solve this problem, a circular polarizing plate is generally used. Specifically, the conventional design method is to prevent users from recognizing natural light incident from the outside by sequentially laminating a retardation film and a linear polarizer on the side of the device (the lamination structure is a circular polarizer), even if the light is emitted from the OLED. Display device reflection. The natural light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/023B32B7/12B32B27/08B32B27/20H01L51/52G02B1/04G02B1/11
CPCB32B7/023B32B7/12B32B27/08B32B27/20G02B1/04G02B1/11B32B2307/4026B32B2457/206B32B2307/416B32B2307/21H10K59/877H10K59/8791H10K59/879G02B5/0242H10K59/50
Inventor 金凡修赵海成尹苏罗郭那潾
Owner LG CHEM LTD
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