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Optical film and display device

A technology of optical film and bottom surface, applied in optics, optical components, instruments, etc., can solve the problems of optical film wear resistance and high optical gain

Active Publication Date: 2018-03-02
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide an optical film and a display device to solve the problem that the optical film in the prior art cannot have high optical gain while having high wear resistance

Method used

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  • Optical film and display device
  • Optical film and display device
  • Optical film and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The optical film provided in this embodiment includes:

[0046] The lens layer has a bottom surface with a flat structure and is composed of a microlens array. The microlens array includes a plurality of lens structures arranged in a first direction. The lens structure is a plano-convex lens, the lens surface curvature radius r=15μm, and the lens layer refractive index n 1 =1.65, and the first direction is parallel to the bottom surface;

[0047] The prism layer is arranged on the lens layer away from the bottom surface. The prism layer is composed of a micro prism array. The micro prism array includes a plurality of prism structures arranged in a first direction. The refractive index of the prism layer is n 2 =1.35, the vertical distance between the intersection of the extended surface of the side surface of the prism structure and the bottom surface H=28μm, and the top corner of the prism structure is rounded, and the radius of curvature of the rounded corner is 5μm (R5);

[...

Embodiment 2

[0050] The optical film provided in this embodiment includes:

[0051] The lens layer has a bottom surface with a planar structure and is composed of a microlens array. The microlens array includes a plurality of lens structures arranged in a first direction. The lens structure is a plano-convex lens, the lens surface curvature radius r=9μm, and the lens layer refractive index n 1 =1.65, and the first direction is parallel to the bottom surface;

[0052] The prism layer is arranged on the lens layer away from the bottom surface. The prism layer is composed of a micro prism array. The micro prism array includes a plurality of prism structures arranged in a first direction. The refractive index of the prism layer is n 2 =1.35, the vertical distance between the intersection of the extended surface of the side surface of the prism structure and the bottom surface H=28μm, and the top corner of the prism structure is rounded, and the radius of curvature of the rounded corner is 5μm (R5);

...

Embodiment 3

[0055] The optical film provided in this embodiment includes:

[0056] The lens layer has a bottom surface with a planar structure and is composed of a microlens array. The microlens array includes a plurality of lens structures arranged in a first direction. The lens structure is a plano-convex lens, the lens surface curvature radius r=6μm, and the lens layer refractive index n 1 =1.65, and the first direction is parallel to the bottom surface;

[0057] The prism layer is arranged on the lens layer away from the bottom surface. The prism layer is composed of a microprism array. The microprism array includes a plurality of prism structures arranged in a first direction. The refractive index of the prism layer is n 2 =1.35, the vertical distance between the intersection of the extended surface of the side surface of the prism structure and the bottom surface H=28μm, and the top corner of the prism structure is rounded, and the radius of curvature of the rounded corner is 5μm (R5);

[0...

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Abstract

The invention provides an optical film and a display device. The optical film comprises a lens layer having a planar structure bottom, and composed of a microlens array, wherein the microlens array comprises a plurality of lens structures arranged in a first direction, and the first direction is parallel with the bottom; and a prism layer arranged on the lens layer distant from the bottom, and composed of a microprism array, wherein the microprism array comprises a plurality of prism structures arranged in the first direction, and the vertex angles of the prism structures are chamferings. The vertical distance between the focus point of a lens structure and the bottom is f; the vertical distance between the extension surface intersecting line of sides of a prism structure and the bottom is H, and f>1 / 2H. According to the invention, the top ends of the prism structures can drop in dark areas, forcing all rays of light to penetrate through the inclined surfaces of the prism structures, thereby avoiding beam angle convergence decrease of the optical film caused by curved top ends, and allowing the optical film to possess higher optical gains as well as greater wearability.

Description

Technical field [0001] The present invention relates to the technical field of thin films, in particular to an optical thin film and a display device. Background technique [0002] An optical film as a brightness enhancement film provided on a flat-panel display is generally used to increase the light intensity in the forward direction of the display. The main difficulty in the use of the above-mentioned optical film is that the surface microstructure is easily damaged by external forces, resulting in image defects. In order to improve the display effect of the optical film, it is generally necessary to improve the abrasion and scratch resistance of the surface of the optical film. At present, the following processing methods are usually used to achieve this: The first processing method is to passivate the prism vertex angle to reduce microstructure damage. The possibility of damage to improve the wear resistance, the second treatment method is to improve the wear resistance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04
CPCG02B5/045
Inventor 丁清华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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