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Viewing angle compensation film, polarizing plate including same, and display device including same

A technology of polarizing plate and viewing angle, which is applied in the direction of optics, optical elements, polarizing elements, etc., can solve the problems that drivers are not parallel, cannot obtain clear images, and flat panel displays cannot obtain clear images, so as to improve contrast and viewing angle, and reduce resolution. The effect of color phenomenon

Active Publication Date: 2021-04-02
LG CHEM LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] With the expansion of the use of display devices, places where display devices are placed and their positions are diversified, but there is a problem that when viewed from directions other than the front of the display Flat panel monitors do not get a clear image when viewed
In particular, in the case of a display for a vehicle, the position of the display is not parallel to the driver's eyes, so there is a problem that a clear image cannot be obtained from the driver's field of view

Method used

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  • Viewing angle compensation film, polarizing plate including same, and display device including same
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  • Viewing angle compensation film, polarizing plate including same, and display device including same

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Embodiment approach

[0111] Hereinafter, the operation and effects of the present invention will be described in more detail through specific examples of the present application. However, the embodiments are presented only as examples of the present invention, and the scope of the present invention is not limited by the embodiments.

[0112]

Embodiment 1

[0114] The simulation is performed by forming a display device including a film for compensating a viewing angle in which a base substrate, a pattern layer, and an optical layer are sequentially stacked, and Figure 4 The structure of the film for compensating the viewing angle attached to the polarizing plate is shown in .

[0115] 1) Pattern layer: including a plurality of protrusions, wherein the angle formed between the first straight line and the first surface is 88°, the angle formed between the second straight line and the first surface is 50°, and P is 13.5 μm, and the curvature of the curved surface is 2 μm (refractive index: 1.58, Abbe constant: 25.9).

[0116] 2) Optical layer: provided on the upper part of the pattern layer (refractive index: 1.48, Abbe constant: 51.5).

[0117] 3) Attaching a film for compensating the viewing angle: The film for compensating the viewing angle is located on the opposite side of the surface of the polarizer of the lower polarizing ...

Embodiment 2

[0119] A film for compensating the viewing angle was formed by the same method as that of Example 1 except that, unlike Example 1, the curvature of the pattern layer was 4 μm.

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Abstract

The present specification relates to a viewing angle compensation film, a polarizing plate including same, and a display device including same. The viewing angle compensation film comprises a base material, a pattern layer, and an optical layer, wherein the pattern layer includes a first surface having a flat surface and a second surface opposite to the first surface, and the second surface includes a plurality of protruding portions including curved surfaces. Thus, the viewing angle compensation film has a contrast ratio and viewing angle- increasing effect, and can attenuate the color band phenomenon.

Description

technical field [0001] This application claims priority and benefit to Korean Patent Applications No. 10-2019-0011188 and No. 10-2020-0007106 filed at the Korean Intellectual Property Office on January 29, 2019 and January 20, 2020, all of which The contents are incorporated herein by reference. [0002] The present specification relates to a film for compensating viewing angle, a polarizing plate including the same, and a display device including the same. Background technique [0003] Liquid crystal display devices have been widely used in mobile phones or small portable electronic devices as well as large electronic devices such as personal computers and televisions, and flat panel displays are one of the gradually expanding uses of liquid crystal display devices. [0004] As the use of display devices expands, places where display devices are placed and their positions are diversified, but there is a problem that flat panel displays cannot obtain clear images when viewe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02B1/10G02F1/1335
CPCG02B5/3033G02B5/045G02F1/133524G02F1/133528G02B5/30G02F1/1335G02F1/133562G02F1/133502
Inventor 裵成学韩尚澈金炳默李大熙金荣振
Owner LG CHEM LTD
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