Polarizing body preparation method and polarizing sheet preparation method

Abstract

The invention relates to a manufacture method of partial photon, and the method comprises the steps as follows: a polyvinyl alcohol (PVA) film is provided. The PVA film is soaked in staining solution to carry through a soaking and staining process. The PVA film is soaked in a first solution to carry through a pretreatment. The PVA film after the pretreatment is soaked in a second solution, simultaneously, the PVA film is extended. The first solution includes dicarboxylic acid and catalyst which can catalyze the reaction of the dicarboxylic acid and the surface of the PVA film. No boric acid is included. The second solution includes boric acid.

Description

technical field [0001] The invention relates to a method for preparing polarizers, in particular to a method for manufacturing polarizers used in polarizers of liquid crystal displays. Background technique [0002] In the liquid crystal display, the polarizer is one of the indispensable components. Its purpose is to polarize the originally non-polarized light and convert it into polarized light. Therefore, the liquid crystal display can use this polarized light, plus The twisting characteristics of the liquid crystal molecules themselves are used to control the passage of light and the presentation of color signals. In recent years, as liquid crystal display components are widely used in various electronic devices such as word processors, computer screens, mobile phones or LCD TVs, and even large outdoor display billboards, vehicles, aircraft, and navigation instruments And satellites, etc. Therefore, the demand for polarizers is also increasing. [0003] The cross-section...

AI Technical Summary

Problems solved by technology

The traditional production process using boric acid as a cross-linking agent, although the film thickness of the PVA film can be reduced by changing the m

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