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

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...

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, when making a liquid crystal display, it is also necessary to arrange the liquid crystal molecules according to the design requirements. The traditional alignment technology is the rubbing process method, but in the rubbing process, the dust caused by the rubbing film Dust, static charge, rubbing defect, etc. are difficult to overcome

In addition, the currently used alignment materials are polyimide series polymers, which can be divided into two types: polyamic acid (polyamic acid) and soluble polyimide (soluble PI). Roasting, it is easy to crack into small molecules during storage, and the long-term storage is not good; the latter is usually insoluble in general organic solvents because polyimide is in a polymer state, the coating property is not easy to control, and the synthesis is difficult. , so the traditional method of making liquid crystal alignment will face insurmountable difficulties

[0007] A single optical film cannot meet the requirements of all the characteristics of the light of the display, so it is often necessary to match other various optical films. In liquid crystal displays, in order to achieve the display purpose, it is necessary to insert or coat several kinds of polarizing films, alignment films, etc. in the substrate. Membrane materials, in addition to setting up a separate factory to produce a variety of membrane materials, also require multiple processes to complete, which is quite complicated in terms of process

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