Light-diffusing film having pores

A technology of air holes and light film, which is applied in the field of astigmatism film, and can solve the problems of increasing the transmittance and diffusivity of the astigmatism film

Inactive Publication Date: 2006-10-18
TORAY SAEHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these traditional technologies is that the method of increasing the light transmittance and diffusivity of the astigmatism film is limited to the use of astigmatism materials or special treatment of the astigmatism surface

Method used

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  • Light-diffusing film having pores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] On one surface of a highly transparent polyester film (XG533-100 μm, from Toray Saehan Inc.) the astigmatism layer uses the chemical composition ratio of Table 1, applies a diecoater (diecoater) under the processing conditions of Table 1, and dries for 60 seconds at 110 ° C. A light-scattering layer having a size of 30 μm was formed.

[0031] total weight of ingredients

100g

Astigmatism layer composition

Astigmatism resin

Acrylic resin (A-811, Aekyung Chemical Co., Ltd.

(Aekyung Chemical Co. Ltd.)

30g

astigmatism particles

SOKEN MX1000 (diameter: 10μm)

30g

solvent

Butanone

(Methylethylketone)

40g

Process conditions

synthetic pressure

3kgf / cm 2

Substrate moving speed

40m / min

[0032] The composition ratio of the anti-blocking layer coated on the other surface of the astigmatism film by Mayer bar is shown in Table 2 belo...

Embodiment 2

[0035] The light-scattering layer according to the ratio of synthetic components in the following table 3 was applied to one surface of a highly transparent polyester film (XG533-100 μm, from Toray Saehan Inc.), using a Mayer rod, and then dried at 110° C. for 60 seconds, A light-scattering film having a light-scattering layer with a thickness of 5 μm was formed.

[0036] total weight of ingredients

100g

Astigmatism layer composition

astigmatism resin

Acrylic resin (A-811, Aekyung Chemical Co., Ltd.

Chemical Co. Ltd.))

30g

Astigmatism particles

SOKEN MX1000 (diameter: 10μm)

30g

solvent

butanone

40g

foaming agent

Precision ball 50D, (0.1wt based on the total weight of the ingredients)

0.1g

Process conditions

The pressure exerted by the synthesis

3kgf / cm 2

Substrate moving speed

40m / min

[0037] The composition ratio of the anti-blocking layer...

experiment example

[0045] 1. Measurement of total light transmittance and light diffusivity

[0046] The light transmittance and light diffusivity of the light-scattering film in Examples 1-2 and Comparative Example 1 were measured according to the following procedure. When the 550nm light passes through the 10cm×10cm sized, upright astigmatism film sample perpendicularly, the amount of light is measured with an automatic digital hazemeter, which is selected from Nippon Denshoku Industries Co. , Ltd.), the calculation of light diffusivity (haze) adopts the following formula 1:

[0047] Formula 1

[0048]

[0049] In addition, the calculation of the total light transmittance adopts the following formula 2:

[0050] Formula 2

[0051]

[0052] 2. Measurement of porosity

[0053] The porosity of each astigmatism mold produced in Examples 1 to 2 and Comparative Example 1, the measurement of Comparative Example 1 was processed by mercury penetration of micrometric method Micro Metrics using...

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Abstract

The disclosed diffuser film with pores is used in the backlighting unit of a thin-film transistor liquid crystal display. The diffuser film with pores of the present invention includes a substrate of synthetic resin; a diffuser layer with pores on the surface of the substrate has pores, wherein The air hole is formed by coating a composition comprising light-scattering resin and light-scattering particles contained in the light-scattering resin under the synthetic application pressure of 1-5MPa and the moving speed of the substrate at 10-200m / min; And forming an anti-adhesion layer on the other surface of the substrate. The diffusion plate of the present invention may be applied to the back lighting unit of the thin film transistor liquid crystal display.

Description

technical field [0001] The invention relates to a light-scattering film with air holes for a TFT-LCD (thin film transistor liquid crystal display) backlight unit, in particular to a light-scattering film with air holes formed in layers in a light-scattering layer on the upper surface of a substrate, thereby enhancing the light-scattering film Total light transmittance and its diffusivity. Background technique [0002] Generally speaking, LCDs can be made small and ultra-thin, and can achieve low power consumption and high-definition image quality, so they have attracted attention in applications of various mobile image display devices or fixed image display devices. However, unlike other flat panel displays, when a liquid crystal display is used for display, the liquid crystal itself does not emit light, and an additional light-emitting unit is required to enhance the brightness of the display screen. [0003] As far as the additional light-emitting unit is concerned, light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335B32B33/00G02B5/02
CPCG02B5/0242G02B5/0247G02B5/0278H01H15/10H01H13/14H01H23/14
Inventor 金相弼朴骏尚
Owner TORAY SAEHAN
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