Brightness enhancement film and manufacturing mold and manufacturing method thereof

A technology of brightening film and optical surface, applied in diffusing elements, prisms, etc., can solve the problems of inability to solve the problem of bad brightness enhancement film at the same time, affecting the display quality of liquid crystal display, scratching of sharp edges and corners of prism structure, etc., to reduce the Newton ring. and moiré phenomenon, assembly process advantages, the effect of mitigating moiré phenomenon

Inactive Publication Date: 2012-08-01
KANGDE XIN COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the general brightness enhancement film often has the following two problems in practical application: when the light passes through the prism structure layer, it is easy to produce negative optical effects such as Newton’s ring and Moire interference. image 3 (a) is the moiré phenomenon in the prior art where two common brightness enhancement films overlap at an angle of 10° in the direction of the prism, image 3 (b) is the Newton ring phenomenon that occurs when two ordinary brightness enhancement films overlap. In addition, the prism structure of the film and the square pixels in the liquid crystal panel will also produce moiré, so the above negative optical effects will affect the display of the liquid crystal display Quality; In addition, because the enhancement film is often used in conjunction with other optical films, it is easy to scratch the sharp edges and corners of the prism structure, thus affecting the optical quality
[0008] Neither of the above two patents can simultaneously solve the common adverse phenomena of the brightness enhancement film in practical applications. In order to solve the above problems, a new type of prism structure brightness enhancement film must be designed for improvement.
[0009] The inventor’s previous application 201210023734.2 relates to a brightness enhancing film with anti-scratch and diffusion functions. The principle is to disrupt the light through the diffusion structure, thereby reducing the Moore phenomenon, but its multiple regular linear prism structures will still be different from the multiple regular linear prism structures of other diaphragms or the regular multiple square pixels of liquid crystals. Periodic visual interference fringes (principle of moiré generation) are generated during overlapping and matching, which cannot fundamentally solve the phenomenon of moiré. Therefore, the present invention provides a light-enhancing film with anti-scratch function and can further reduce the phenomenon of moiré. And its production mold, production method

Method used

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  • Brightness enhancement film and manufacturing mold and manufacturing method thereof
  • Brightness enhancement film and manufacturing mold and manufacturing method thereof
  • Brightness enhancement film and manufacturing mold and manufacturing method thereof

Examples

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no. 1 example

[0061] Such as Figure 4 As shown, the brightness enhancement film includes a substrate 102 and a prism structure layer 108 thereon. The substrate 102 has a first optical surface 106 and a second optical surface 104 located on the first optical facing surface. A prism structure layer 108 is arranged on the first optical surface 106, and the prism structure layer 108 includes several first prism structure units 112A and several second prism structure units 112B, wherein, in the prism arrangement direction 110A, every eighth A prism structure unit 112A is provided with a second prism structure unit 112B regularly arranged in a prism structure array, each prism structure unit stretches and extends along the prism stretching direction 110B, and the several prism structure units are continuously curved in the stretching direction 110B The curve determined by the locus curve trigonometric function equation Y=5sin(0.2X)(μm), that is, the curved trajectories of any two adjacent curve...

no. 2 example

[0071] Although the first embodiment can realize diffusion and anti-scratch functions at the same time, and reduce the effects of negative optical effects such as Newton rings and moiré patterns, since the prism structural units are arranged regularly, it is necessary to make further improvements to create more Conditions for suppressing moiré well.

[0072] Such as Figure 9 As shown, the prism structure enhancement film includes a substrate 202 and a prism structure layer 208 thereon. The substrate 202 has a first optical surface 206 and a second optical surface 204 located on the first optical facing surface. A prism structure layer 208 is arranged on the first optical surface 206, and the prism structure layer 208 includes a plurality of first prism structure units 212A and a plurality of second prism structure units 212B, and each prism structure unit extends and extends along the prism extension direction 210B. , the plurality of prism structural units are curves deter...

no. 3 example

[0082] For the second embodiment, although the irregular arrangement of the prism structural units can better realize the diffusion and anti-scratch functions at the same time, and reduce the effects of negative optical effects such as Newton rings and moiré patterns, but because the adjacent first prism structural units 212A and the second prism structure unit 212B are still the same curved trajectory curve, with regularity, if the curved trajectory of the adjacent prism structure is further set to be different, then the film of this kind of brightness enhancement film and regular structure or When the liquid crystal layer is used together, the conditions for moiré patterns can be completely eliminated.

[0083] Such as Figure 13 As shown, the prism structure enhancement film includes a substrate 302 and a prism structure layer 308 . The substrate 302 has a first optical surface 306 and a second optical surface 304 located on the first optical facing surface. A prism struc...

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Abstract

The invention relates to a brightness enhancement film and a manufacturing mold and a manufacturing method thereof. The brightness enhancement film comprises a base material and a prism structure layer, wherein the prism structure layer comprises a plurality of prism structure units in continuous curved shape along the extension direction. The manufacturing mold comprises a first groove corresponding to the first prism structure unit and a second groove corresponding to a second prism structure unit. The manufacturing method comprises the following steps of: coating an ultraviolet curing resin layer on the base material, pressing the resin into a film to form a microstructure by using a mold wheel with a structure complementary to a microstructure of the prism structure layer, and radiating the microstructure with ultraviolet light so that ultraviolet curing resin layer forming the microstructure is cured to arrange the prism structure layer on an optical surface. The brightness enhancement film provided by the invention has diffusion and scratch resistance functions and is used for diffusing and converging light rays emitted by a light source, so that the diffusion angle of the light rays emitted by the light source after penetrating through the brightness enhancement film is adjusted. With the scratch resistance function, the product yield and good moire fringe resistance of lighting modules can be increased.

Description

technical field [0001] The invention relates to a brightness enhancement film, in particular to a prism structure brightness enhancement film which can be applied to a liquid crystal display and has the functions of diffusion and anti-scratch, as well as a manufacturing mold and a manufacturing method thereof. Background technique [0002] At present, BEF (Brightness Enhancement Film) is widely used in light-emitting modules to gather the light emitted by the light source, especially in monitors and other display devices to increase display brightness and save display battery. energy of the device. The principle of the enhancement film is to adjust the light emitted outside the observer's viewing angle to within the observer's viewing angle through refraction and reflection, thus improving the utilization rate of the light energy emitted by the light source. [0003] The brightness enhancement film is also called the brightness enhancement film. On the surface of the bottom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B5/04B29C69/00B29C33/00
Inventor 钟玉
Owner KANGDE XIN COMPOSITE MATERIAL CO LTD
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