Monolayer polarizing and direction-matching function conformity membrane as well as method for manufacturing the same and LCD containing the same

A liquid crystal display, polarized light technology, applied in optics, instruments, optical components, etc., can solve the problems of difficult acquisition of TAC film, time-consuming production, easy cracking into small molecules, etc.

Active Publication Date: 2008-07-23
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional polarizing film manufacturing methods, such as the methods disclosed in U.S. Patent No. 2,237,567 and No. 2,454,515, utilize organic polymer materials such as polyvinyl alcohol (PVA) or its derivatives to absorb iodine and perform uniaxial stretching. 5 times, to cause the optical anisotropic components such as iodine-containing crystals to be regularly arranged, so that the light incident on the polarizing film is absorbed in a specific direction of the electric field vector to generate polarized light, but this polarizing film is sensitive to moisture The resistance to environmental factors such as air and heat is not good, so it cannot be used in a high-temperature and high-humidity environment, and the polarizer generally needs a protective film, such as the protection of a triacetyl cellulose (TAC) film, and the suitable TAC Membranes are not readily available
In addition, this production method requires an extremely precise stretching process, which is very inconvenient to produce
[0005] Another kind of dye-based polarizing film has better moisture and heat resistance than iodine-based polarizing film, but its disadvantages are low polarization and easy to be damaged by UV light and mechanical friction. At the same time, it uses impregnation, Manufactured by multiple processes such as heating, multi-channel precision stretching and lamination, the production is time-consuming and complicated
[0006] In addition, wh

Method used

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  • Monolayer polarizing and direction-matching function conformity membrane as well as method for manufacturing the same and LCD containing the same
  • Monolayer polarizing and direction-matching function conformity membrane as well as method for manufacturing the same and LCD containing the same
  • Monolayer polarizing and direction-matching function conformity membrane as well as method for manufacturing the same and LCD containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Mix the polymerizable nematic liquid crystal uniformly into the solvent toluene, the liquid crystal is 30% by weight relative to the solvent toluene, and add 5% dichroic dye relative to the content of SLM 90519 , the material was coated on a glass substrate coated with ITO electrodes by spin coating method. After the solvent is removed by baking, it is put into the embossing machine, and the embossing process is carried out with a mold with multiple periodic strip-shaped concave-convex structures. The period of the surface structure of the mold is 1.8 μm, the depth is 0.2 μm, and the overall width of the film layer is 3cm, length 4cm, pressure value of imprinting process is 1.5bar, temperature is 100°C, and time is 20 minutes. After embossing, UV light is used for cross-linking (curing), and then the film is released to complete the single-layer polarizing and alignment function integrated film of Example 1 of the present invention. The film thickness of the single-lay...

Embodiment 2～7

[0063] The difference between the single-layer polarizing and alignment functional integrated films of Examples 2-7 and Example 1 is that the periods of the mold surface structures used in Examples 2-7 are 3 μm, 10 μm, 250 nm, 574 nm, 697 nm and 804 nm, and other process conditions And use material all is identical with embodiment 1. Similarly, the polarization degree and average transmittance were tested for the single-layer polarizing and alignment functional integrated films of Examples 2-7, and the test results are shown in Table 1.

[0064] Table 1 Polarization degree and transmittance of single-layer polarizing and alignment functional integrated films of Examples 1-7

[0065] mold pattern cycle

Embodiment 8

[0067] The single-layer polarizing and alignment functional integrated films prepared in Example 1 are placed on the transparent substrate, and the strip-shaped protrusion structures on the two substrates are vertically attached to each other and packaged to form a liquid crystal cell ( cell), injected twisted nematic (TN) liquid crystal (MLC-13900-100, Merck), driven with a voltage of 0-12 volts, and measured its wear and tear under different applied voltages with a red He-Ne laser (633nm). Transparency, the results are shown in Figure 11, the contrast ratio of the obtained liquid crystal display is 19:1.

[0068] From the results in Figures 10 and 11, it can be seen that the polarization degree and average transmittance of the single-layer polarizing and alignment functional integrated film of the present invention can meet the requirements for polarizers in liquid crystal displays, and the single-layer film of the present invention can The integrated film with polarizing an...

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Abstract

A single-layer polarization-and-distribution integrated film comprises an optical aeolotropy material layer with multiple strip protrusion structures on surface, while the strip protrusion structures have distribution function to regularly arrange liquid crystal molecules, and the optical aeolotropy material has polarization effect to provide polarization and distribution functions to the single-layer structure.

Description

technical field [0001] The invention relates to a single-layer polarizing and aligning function integrated film, in particular to a single-layer optical film having both polarizing and aligning functions applied to liquid crystal displays. Background technique [0002] Flat liquid crystal displays have been widely used in various modern electronic products, such as personal computers, notebook computers, digital cameras, mobile phones, personal digital assistants (PDAs) and LCD TVs. Traditional liquid crystal displays such as Figure 6 As shown, it includes a pair of upper and lower polarizing films 103, 104, which are respectively arranged on the outer sides of the upper substrate 101 and the lower substrate 102, and alignment films 105, 106 are arranged between the upper and lower substrates, and a liquid crystal layer 110 is interposed, so that the liquid crystal molecules Regular arrangement. [0003] Polarizing film is an optical component that converts natural light w...

Claims

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Application Information

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IPC IPC(8): G02B1/00G02F1/1335
Inventor 赖奕颖郭惠隆林圣文陈品诚彭美枝谢依萍
Owner IND TECH RES INST
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