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A kind of composite brightening film and its preparation method and application

A brightness-enhancing film and one-sided technology, applied in instruments, nonlinear optics, optics, etc., can solve problems such as Moire effect or Newton rings, increased assembly times of backlight modules, and affecting visual effects, etc., to reduce the cost of upward expansion Use, improve assembly efficiency, and have good repeatability

Active Publication Date: 2021-02-02
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the trend of thinner and lower cost of liquid crystal modules, a two-layer composite brightness enhancement film has been developed in the prior art to replace the double upper and lower prism films used in the module, but because the light diffusion performance is worse than that of the diffusion film, It needs to be used with up-expansion or down-expansion, which increases the assembly times of the backlight module and lowers the assembly efficiency
Moreover, the upper and lower prisms in the composite brightness enhancement film are prone to interference phenomenon, and there will be Moire effect or Newton ring phenomenon, which will affect the visual effect

Method used

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  • A kind of composite brightening film and its preparation method and application
  • A kind of composite brightening film and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1It is a schematic structural diagram of a composite brightness enhancing film provided by an embodiment of the present invention, and the composite brightness enhancing film includes a first prism layer 1, a first base material layer 2, an adhesive layer 3, a second Prism layer 4 , second substrate layer 5 and back coat layer 6 .

[0051] The first prism layer 1 includes a plurality of first prism columns 11 arranged in parallel. The cross sections of the two ends of the first prism column 11 are isosceles right triangles, and the apex angles are right angles. The first prism columns 11 of the first prism layer 1 have the same width. The height of each first prism column 11 of the first prism layer 1 is 30 μm.

[0052] figure 2 It is a cross-sectional view perpendicular to the prism direction of the second prism layer according to the embodiment of the present invention, and the second prism layer 4 includes a plurality of second prism columns 41 arranged i...

Embodiment 2

[0066] The composite brightness enhancing film described in this embodiment includes a first prism layer 1, a first base material layer 2, an adhesive layer 3, a second prism layer 4, a second base material layer 5 and Backcoat6.

[0067] The first prism layer 1 includes a plurality of first prism columns 11 arranged in parallel. The cross sections of the two ends of the first prism column 11 are isosceles right triangles, and the apex angles are right angles. The first prism columns 11 of the first prism layer 1 have the same width. The height of each first prism column 11 of the first prism layer 1 is 10 μm.

[0068] The second prism layer 4 includes a plurality of parallel second prism columns 41 with different heights. The cross section of the second prism column 41 is an isosceles right triangle, and the apex angle is a right angle. The second prism columns 41 with different heights are arranged alternately, and the height difference between the second prism columns 4...

Embodiment 3

[0080] The composite brightness enhancing film described in this embodiment includes a first prism layer 1, a first base material layer 2, an adhesive layer 3, a second prism layer 4, a second base material layer 5 and Backcoat6.

[0081] The first prism layer 1 includes a plurality of first prism columns 11 arranged in parallel. The cross sections of the two ends of the first prism column 11 are isosceles right triangles, and the apex angles are right angles. The first prism columns 11 of the first prism layer 1 have the same width. The height of each first prism column 11 of the first prism layer 1 is 20 μm.

[0082] The second prism layer 4 includes a plurality of parallel second prism columns 41 with different heights. The cross section of the second prism column 41 is an isosceles right triangle, and the apex angle is a right angle. The second prism columns 41 with different heights are arranged alternately, and the height difference between the second prism columns 4...

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Abstract

The invention relates to the field of liquid crystal display, in particular to a composite brightness enhancing film and its preparation method and application. The composite brightness enhancing film comprises a first prism layer, a first base material layer, an adhesive layer, a second prism layer, a second base material layer and a back coat layer from top to bottom, and the prisms of the first prism layer The direction intersects non-perpendicularly with the prism direction of the second prism layer. The present invention intersects the prism direction of the first prism layer non-perpendicularly with the prism direction of the second prism layer, which can effectively avoid the interference phenomenon, reduce the use of up-expansion, improve the assembly efficiency of the module, reduce poor assembly, and reduce the thickness of the module .

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a composite brightness enhancing film and its preparation method and application. Background technique [0002] Liquid crystal display is the most widely used display technology today, because it does not have the ability of self-illumination, it needs to use other light sources in the backlight module to display. The backlight source used in the existing backlight module is generally a point light source, which can be transformed into a surface light source with uniform brightness only under the assistance of an optical film. [0003] Prism film is an important part of the backlight module, and is a kind of optical film. Usually, a prism film is provided on one side of a transparent material, and a coating is provided on the other side, which can improve brightness. Because the prism film has excellent light-gathering performance, can change the direction of light, and gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/13357
CPCG02F1/133504G02F1/133606G02F1/133507
Inventor 孟丹季德维金星南
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL