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Optical sheet, and polarizing plate and liquid crystal display comprising same

A technology for optical sheets and polarizers, applied in optics, nonlinear optics, instruments, etc., to solve problems such as difficulty in realizing slender or thin-thickness electronic products

Active Publication Date: 2017-08-29
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the backlight unit includes a plurality of optical sheets for collecting or diffusing light, there is a problem that it is difficult to realize slim or thin electronic products such as mobile phones or tablet computers.

Method used

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  • Optical sheet, and polarizing plate and liquid crystal display comprising same
  • Optical sheet, and polarizing plate and liquid crystal display comprising same
  • Optical sheet, and polarizing plate and liquid crystal display comprising same

Examples

Experimental program
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Effect test

example 1 and example 2 and comparative example 1 to comparative example 4

[0137] Example 1 and Example 2 and Comparative Example 1 to Comparative Example 4: Preparation of Optical Sheets

example 1

[0139] A photocurable resin composition comprising: 70% by weight of acrylate resin (TBP102, Hannong Chemical Co., Ltd. Co., Ltd.), 5% by weight of phenoxybenzyl acrylate, 7% by weight of bisphenol F acrylate, 10% by weight of ethoxylated sulfur diphenyl diacrylate, 1% by weight of ester acrylate (ECX 5031, Corning Co., Ltd.), 2% by weight of antistatic agent (HR-E, Nano Chemical Technology Co., Ltd.), 1% by weight of silicon additive (UV-3530, BYK company) and 4% by weight of initiator agent (Irgacure 184, Irgacure TPO, Ciba Chemical Co., Ltd.). When one surface of the base film (polyethylene terephthalate film, Toyobo Co., Ltd.) of Table 1 was brought into contact with the composition layer on the mold, the coated composition was cured by irradiating with ultraviolet light to form a coating. Floor. Subsequently, the coating layer bonded to the base film was separated from the mold, thereby preparing an optical sheet having a light collection pattern layer on one surface of...

example 2

[0142] An optical sheet was prepared in the same manner as in Example 1, except that the height, pitch, and apex angle of the unit prisms constituting the light-collecting pattern layer were changed as listed in Table 1.

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Abstract

The present invention relates to an optical sheet, and a polarizing plate and a liquid crystal display comprising the same, the optical sheet comprising a base film and a light condensing pattern layer formed on one surface of the base film, wherein the base film is stretched in the transverse direction (TD, width direction), and an in-plane phase retardation value (Re) represented by formula 1 below is about 5,000 nm to about 15,500 nm: Re = (nx - ny)*d where nx and ny respectively denote the refractive indexes of the x-axis and y-axis directions, and d denotes the thickness of the film.

Description

technical field [0001] The invention relates to an optical sheet, a polarizing plate and a liquid crystal display containing the same. Background technique [0002] Polarizing plates are used inside and outside the liquid crystal cell in order to control the oscillation direction of light to realize the display pattern of the liquid crystal display. Recently, liquid crystal displays are used in a variety of applications ranging from small devices in the early stages of R&D to notebook computers, LCD monitors, LCD color projectors, LCD TVs, in-vehicle navigation systems, personal phones, and measurement devices for indoor and outdoor use Wait. Specifically, LCD monitors, LCD TVs, etc. generally use high-brightness backlights. Therefore, there is a need for a polarizing film for a polarizing plate whose performance is higher than that of typical products in the art. [0003] A liquid crystal display includes polarizing plates disposed on both surfaces of a glass substrate f...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02F1/1335
Inventor 金显敏李光七崔乘晩
Owner SAMSUNG SDI CO LTD
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