KR20210052363A - Optical film for improving side-visibility - Google Patents

Abstract

The present invention relates to an optical film for improving side visibility. According to the present invention, the optical film for improving side visibility includes a first layer made of a resin material that has an upper surface on which a plurality of first structures having a columnar shape spaced apart from each other and a second structure having a columnar shape formed between the first structures are formed, and a second layer covering the upper surface of the first layer.

Description

Optical film for improving side visibility {OPTICAL FILM FOR IMPROVING SIDE-VISIBILITY}

The present invention relates to an optical film for improving side visibility.

There is considerable demand from the industry for an optical film capable of improving the side viewing angle and side contrast ratio, and furthermore, the visibility of black.

The present invention has been devised to solve the above problems, and an object thereof is to provide an optical film for improving side visibility.

The present invention can also aim to achieve these objects and other objects that can be easily derived by a person skilled in the art from the general description of the present specification in addition to the above-described clear objects.

In order to achieve the object as described above, the optical film for improving side visibility of the present invention,

A first structure in a column shape formed in a plurality of spaced apart from each other, and

A first layer made of a resin material having a columnar second structure formed between the first structures on the upper surface, and

Including a second layer covering the upper surface of the first layer,

The first layer is a pressure sensitive adhesive,

The refractive index of the second layer is greater than that of the first layer.

In addition, cross-sections of the first structure and the second structure may have a rounded square shape.

In addition, cross-sections of the first structure and the second structure may be rounded trapezoidal.

In addition, the height of the first structure may be higher than the height of the second structure.

In addition, the width of the ridge line of the first structure may be 3 to 5 μm.

In addition, the width of the bottom surface of the first structure may be 8 to 10 μm.

In addition, the height of the first structure may be 8 to 12 μm.

In addition, the first structure may be formed one by one every 22 to 27 μm.

In addition, an angle between the slope of the first structure and the first layer may be 100 to 105°.

In addition, the width of the ridge line of the second structure may be 3 to 4 μm.

In addition, the width of the bottom of the second structure may be 5 to 7 μm.

In addition, the height of the second structure may be 4 to 6 μm.

In addition, the second structure may be formed one by one every 22 to 27 μm.

In addition, an angle between the slope of the second structure and the first layer may be 100 to 105°.

In addition, the refractive index of the first structure may be 1.46 to 1.48.

In addition, the refractive index of the second structure may be 1.58 to 1.60.

In addition, the first layer may be an ultraviolet curable urethane resin.

In addition, the second layer may be an ultraviolet curable fluororesin.

In addition, the optical film for improving side visibility of the present invention may be in contact with the optical panel.

According to the problem solving means of the present invention as described above, various effects including the following can be expected. However, the present invention is not established when all of the following effects are exhibited.

The optical film for improving side visibility according to the present invention has the advantage of improving the side viewing angle and side contrast ratio, and furthermore, the visibility of black.

1 is a cross-sectional view of an embodiment of an optical film for improving side visibility of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail.

However, the following is only for describing in detail by exemplifying specific embodiments, and since the present invention may be variously changed and may have various forms, the present invention is not limited to the specific exemplary embodiments illustrated. It is to be understood that the present invention includes all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In addition, in the following description, a number of specific items such as specific components are described, which are provided to help a more general understanding of the present invention, and the present invention can be practiced without these specific details. It will be said that it is self-evident to those who have the knowledge of Further, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

In this application, expressions in the singular include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

In the present application, terms such as'include','include', or'have' are intended to refer to the presence of features, elements (or constituents), etc. described in the specification, but one or more other features or It does not mean that the component or the like does not exist or cannot be added.

1 is a cross-sectional view of an embodiment of an optical film for improving side visibility of the present invention.

The optical film for improving side visibility of the present invention is as shown in FIG. 1 in order to achieve the above-described object,

A first structure 12 of a column shape formed in a plurality of spaced apart from each other, and

A first layer 10 made of a resin material having a columnar second structure 14 formed between the first structures 12 on the upper surface, and

Comprising a second layer 20 covering the upper surface of the first layer 10,

The first layer 10 is a pressure sensitive adhesive,

The refractive index of the second layer 20 is greater than that of the first layer 10.

In addition, cross-sections of the first structure 12 and the second structure 14 may be rounded squares.

In addition, cross-sections of the first structure 12 and the second structure 14 may have a rounded trapezoidal shape.

In addition, the height of the first structure 12 may be higher than the height of the second structure 14.

In addition, the width of the ridge line of the first structure 12 may be 3 to 5 μm.

In addition, the width of the bottom surface of the first structure 12 may be 8 to 10 μm.

In addition, the height of the first structure 12 may be 8 to 12 μm.

In addition, the first structure 12 may be formed one by one every 22 to 27 μm.

In addition, an angle between the slope of the first structure 12 and the first layer 10 may be 100 to 105°.

In addition, the width of the ridge line of the second structure 14 may be 3 to 4 μm.

In addition, the width of the bottom of the second structure 14 may be 5 to 7 μm.

In addition, the height of the second structure 14 may be 4 to 6 μm.

In addition, the second structure 14 may be formed one by one every 22 to 27 μm.

In addition, an angle between the slope of the second structure 14 and the first layer 10 may be 100 to 105°.

In addition, the refractive index of the first structure 12 may be 1.46 to 1.48.

In addition, the refractive index of the second structure 14 may be 1.58 to 1.60.

In addition, the first layer 10 may be an ultraviolet curable urethane resin.

In addition, the second layer 20 may be an ultraviolet curable fluororesin.

When the above conditions are satisfied, the optical film for improving side visibility of the present invention can sufficiently improve the side viewing angle, the side contrast ratio, and further, the visibility of black.

In addition, the optical film for improving side visibility of the present invention may be in contact with the optical panel.

In the above, preferred embodiments of the present invention have been described, but the present invention is not limited to the specific embodiments described above, and those of ordinary skill in the art can implement various modifications without departing from the gist of the present invention. Of course it is possible. Therefore, the scope of the present invention should not be construed as limited to the above embodiments, and should be determined by the claims and equivalents to the claims to be described later.

10: first floor
12: first structure
14: second structure
20: second floor

Claims (3)

A first structure in the shape of a column formed in a plurality of spaced apart from each other, and
A first layer made of a resin material having a columnar second structure formed between the first structures on the upper surface, and
Including a second layer covering the upper surface of the first layer,
The first layer is a pressure sensitive adhesive,
The refractive index of the second layer is greater than the refractive index of the first layer,
Optical film for improving side visibility. The method according to claim 1,
An optical film for improving side visibility, characterized in that the cross section of the first structure and the second structure is a rounded square. The method according to claim 1,
The optical film for improving side visibility, characterized in that the height of the first structure is higher than the height of the second structure.

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