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Brightness enhancement film

A technology of brightness-enhancing film and substrate layer, applied in prisms, nonlinear optics, instruments, etc., can solve problems affecting the quality and uniformity of display images, and achieve the effects of improving concealment, improving process efficiency, and high quality

Inactive Publication Date: 2015-04-29
NINGBO DXC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, on the projection surface perpendicular to the optical axis, the light intensity does not present an axis (normal) symmetrical distribution, which affects the quality and uniformity of the display screen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be further described in detail below in combination with specific embodiments.

[0010] A brightness-enhancing film, comprising a substrate layer, on which a UV resin light-gathering layer is compounded, and the UV resin light-gathering layer has a prism structure, and the prism structure includes several mutually parallel raised Convex ribs, the cross-section of the protruding ribs presents an isosceles right triangle, and adjacent protruding ribs connect with each other;

[0011] Taking a point on the upper surface of the substrate layer as the coordinate origin, and taking the width direction of the rib as the x-axis direction, the distribution function of the height z of the rib is: , where the unit of z is micron, and the distribution function of the base length l of the rib is , where the unit of l is micron.

[0012] Since each convex rib obeys a specific function distribution, it has the effect of adjusting the light angle in the h...

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PUM

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Abstract

The invention discloses a brightness enhancement film. The brightness enhancement film comprises a base material layer, wherein a UV (ultraviolet) resin condensing layer is compounded on the base material layer and is of a prism structure; the prism structure comprises a plurality of convex flanges which are parallel to each other; the cross section of each flange is shaped like an isosceles right triangle; every two adjacent flanges are joined. A point on the upper surface of a base material serves as a coordinate origin; the width direction of each flange serves as the direction of an X axis; the distribution function of the height z of each flange is that z is equal to 25*5sin(pi / 25*x), wherein the unit of z is micron; the length l of the bottom side of each flange is that l is equal to 50+10sin(pi / 25*x), wherein the unit of l is micron. Due to the fact that each flange submits to specific function distribution, the effect of adjusting light angles in both the height direction and the width direction is achieved, slight flaw of a backlight source can be effectively shaded while the uniform and high-brightness backlight source is obtained, the flaw shading property is improved, a high-quality display frame can be more easily obtained, and the manufacture efficiency of a backlight module is improved.

Description

technical field [0001] The invention relates to a brightness enhancing film. Background technique [0002] Liquid Crystal Display (LCD, Liquid Crystal Display) has become the most common display technology today. LCD is a non-luminescent display device, and it needs a backlight module to achieve the display function. The main components of the backlight module include: light source, light guide plate, and various optical films. The optical film of the backlight module mainly includes three types: reflective film, diffusion film and brightness enhancement film. [0003] The function of the brightness enhancement film is to adjust the light outside the observer's viewing angle to within the range of the observer's viewing angle, that is, it has the function of concentrating light and improving the utilization rate of light. Using the total reflection effect of the micro-prism structure on the light, the light that meets a certain angle is emitted, that is, the outgoing angle...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02B5/04
CPCG02B5/04G02F1/133606G02F1/133607
Inventor 罗培栋江绍钏靳钊
Owner NINGBO DXC NEW MATERIAL TECH