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Optical film capable of improving performance and its manufacturing method

An optical thin film and thin film technology, applied in the direction of prisms, etc., can solve the problems of increasing the cost and trouble of module assembly, and achieve the effect of improving performance, good light collection effect, and improving brightness

Inactive Publication Date: 2009-01-28
APTICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this is the case, it will increase the cost and trouble of module assembly

Method used

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  • Optical film capable of improving performance and its manufacturing method
  • Optical film capable of improving performance and its manufacturing method
  • Optical film capable of improving performance and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] refer to image 3 , using the optical film design of the present invention, including: (1) the angle between the upper prism surfaces 3a and 3b is 90°; (2) the angle between the lower prism surfaces 4a and 4b is 20°; (3) the upper prism surfaces 3a and 3b The height of the extension intersection and the substrate film 5 is 25 μm; (4) the extension intersection and DD of the lower prism surfaces 4a and 4b * (5) The pitch W of the prisms is 50 μm, and the substrate film used in this embodiment is PET, and the thickness of the PET substrate film is 125 μm. Place the upper and lower prism sheets of the present invention Figure 5Between the diffuser sheet 25 (diffuser sheet) and the light-receiving surface 28 in the optical simulation structure, this optical structure is initially verified by TracePro software, and the simulation result is shown in the X3 curve in FIG. 6 . Comparing X3 and X2 in FIG. 6, it can be seen that the optical design of the present invention has b...

Embodiment 2

[0072] The prism of another preferred embodiment of the present invention sees Figure 7 , the peak angle θ of the extension of the upper prism surface 3a, 3b 1 is 90°; the peaks extending from the lower prism surfaces 4a and 4b are arc-shaped 4r(round), and the prism width W=50μm, where H 1 / H 2 = 1 / 10, H 1 +H 2 = 25 μm. The manufacturing method of the prism is not limited, and the selected material is a highly transparent material. In this embodiment, acrylic photosensitive resin is used, and its refractive index is 1.494. Place the upper and lower prism sheets of the present invention Figure 5 Between the diffuser sheet 25 (diffuser sheet) and the light-receiving surface 28 in the optical simulation structure, this optical structure is initially verified by TracePro software, and the simulation result is shown in the X4 curve in FIG. 6 . The rigidity of the prism sheet of the present invention and the bonding strength between the prism and the substrate film interfac...

Embodiment 3

[0074] The prism of a preferred embodiment of the present invention sees Figure 8 , the peak angle θ of the extension of the upper prism surface 3a, 3b 1 is 90°; the lower prism surfaces 4a, 4b and 4c form a rectangular section, length=10μm, width=5μm, prism width W=50μm, where H 1 / H 2 = 1 / 10, H 1 +H 2 = 25 μm. The manufacturing method of the prism is not limited, and the selected material is a highly transparent material. In this embodiment, acrylic resin (acrylic resin) with a refractive index of 1.494 is used. Place the upper and lower prism sheets of the present invention Figure 5 Between the diffuser sheet 25 (diffuser sheet) and the light-receiving surface 28 in the optical simulation structure, this optical structure is initially verified by TracePro software, the simulation result is shown in the X5 curve in Figure 6, and the light intensity in this example is slightly worse (Compared to X2) because the root is rectangular, not the prism shape of the previous ...

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Abstract

The invention relates to a optical thin film of upgrade the performance and its manufacturing method. The optical thin film includes the first base plane, and a second surface of the micro-structure on the first surface, the micro-structure is a prism array armed with a root. The root of the related prism embed in the first base plane and both with the better follow intensity, this optical structure can increase the rigidity of the related optical thin film, so as to reduce the heating thermal stress of optical thin film and produce waving in the external environment effect; or can increase the brightness enhancement effect of optical thin film through the internal refraction of the prism root; or through the prism root and the first base plane among the 'interlocking', thereby it increase the follow intensity with the first base plane.

Description

technical field [0001] The invention relates to an optical structure and a manufacturing method of an optical film capable of improving multiple performances, in particular to the improvement of the prism microstructure on the optical film. Background technique [0002] The backlight module in the liquid crystal display generally includes a brightness enhancement film, and the brightness enhancement film is placed between the diffusion sheet and the panel of the liquid crystal display. The backlit liquid crystal display also includes a light source such as cold cathode fluorescent lamp (cold cathode fluorescent lamp; CCFL), light-emitting diode (LED), small molecule light-emitting diode (MOLED) or polymer light-emitting diode (PLED) or surface light source, etc., the light of the light source passes through the light guide plate Direct the light to the light emitting direction of the LCD panel. Brightness enhancement films (or prism sheets) (Brightnes s enhancement films; B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04
Inventor 林清彬
Owner APTICON