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A Brightness Enhancement Film with an Intermittent Whole Up and Down Jitter Structure

A brightening film, an integrated technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of low brightness and poor anti-adsorption effect of the brightening film, and achieve the effect of high brightness and good anti-adsorption effect.

Active Publication Date: 2020-04-03
NINGBO JIANGBEI EXCITON NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the problem that the continuous shaking structure of the existing brightness enhancement film has poor anti-adsorption effect and causes the brightness of the brightness enhancement film to be low, the present invention provides a brightness enhancement film with an intermittent overall up and down shaking structure

Method used

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  • A Brightness Enhancement Film with an Intermittent Whole Up and Down Jitter Structure
  • A Brightness Enhancement Film with an Intermittent Whole Up and Down Jitter Structure
  • A Brightness Enhancement Film with an Intermittent Whole Up and Down Jitter Structure

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Embodiment 1

[0082] Such as Figure 4As shown, the brightness enhancement film with an intermittent integral up and down structure provided by the present invention includes a substrate layer 0 and a structural layer 1, wherein the structural layer 1 includes a tiled prism structure, and its cross-section is an isosceles triangle extending intermittently along the longitudinal direction of the prism. Jitter, the trajectory of the triangular vertices along the longitudinal section is half cycle of the sinusoidal convex shape. The prism spacing W is 24 μm, the apex angle θ of the prism is 90 degrees, the bottom edge of the prism in the shaking interval is L=W, the shaking period T is 250 μm, the shaking interval D is 25 times of the shaking period T, and the height difference within the shaking period is A is 2.5 μm. The thickness of the substrate layer is 0.1mm, and the material is PET. The prism material of the structural layer is light curing resin polyurethane acrylate.

Embodiment 2

[0084] For the brightness-enhancing film with an intermittent overall up-and-down shaking structure provided in Example 1, the prism spacing W is 10 μm.

Embodiment 3

[0086] For the brightness-enhancing film with an intermittent overall up-and-down shaking structure provided in Example 1, the distance W between the prisms is 100 μm.

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Abstract

The invention relates to an optical thin film, and particularly relates to a brightness enhancement film with an intermittent whole vertical wave structure, which can solve the problem that continuous wave structures of the conventional brightness enhancement film are poor in anti-absorbing effect and the brightness is low. The invention provides a brightness enhancement film with the intermittent whole vertical wave structure. The brightness enhancement film includes a base material layer and a structure layer attached on the upper surface of the base material layer; the structure layer includes a plurality of prism structures; each prism structure is a triangular prism with an isosceles triangle-shaped cross section; bases L of the isosceles triangle-shaped structures are positioned on the upper surface of the base material layer; vertex angles Theta of the isosceles triangle-shaped structures corresponding to the same triangular prisms are identical; the height of positions of vertexes of the isosceles triangle structures is changing in longitudinal profiles; height change of the positions of the vertexes are periodic; a period includes a wave period T and a wave interval D; and the shapes and the sizes of the plurality of triangular prisms are identical, and the plurality of triangular prisms are parallel to each other. The brightness enhanced film is good in anti-absorbing effect, and is high in brightness.

Description

technical field [0001] The invention relates to an optical film, in particular to a brightness-enhancing film with an intermittent whole up and down shaking structure. Background technique [0002] LCD (Liquid Crystal Display) is currently the most common display technology. LCD is a non-luminescent display device, and it needs a backlight module BLU (BackLight Unit) to provide a bright and uniform light source to achieve the display effect. The backlight module includes three main optical films: light source, light guide plate, reflective film, diffusion film and brightness enhancement film. [0003] The function of Brightness Enhancement Film (BEF, Brightness Enhancement Film) is to reconverge most of the light that has been homogenized and scattered after passing through the diffuser to within the central viewing angle (±35° relative to the normal of the light-emitting surface), which significantly improves the front-view brightness , reducing the loss of scattered ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133606G02F1/133607
Inventor 夏寅秦文鹏张树柏梁明礼李刚唐海江张彦
Owner NINGBO JIANGBEI EXCITON NEW MATERIAL TECH CO LTD