Method for preparing bias photon and method for preparing polarized light slice

A technology of photons and solutions, applied in the field of polarizers and polarizers, can solve the problems of accelerated bath evaporation, iodine easy to seep out, and large roller tension, etc., to reduce the temperature of the extended bath, not easy to fade, and easy to switch Effect

Inactive Publication Date: 2008-10-08
DAXON TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Second, because the toughness of the PVA film is improved by the cross-linking of boric acid on its surface, it will cause excessive tension on the roller during the stretching process.
However, the use of a high extension bath temperature will not only accelerate the evaporation of the bath solution and increase the concentration of the chemical solution, but also cause the iodine dyed in the PVA film to ooze out more easily and cause discoloration.

Method used

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  • Method for preparing bias photon and method for preparing polarized light slice
  • Method for preparing bias photon and method for preparing polarized light slice
  • Method for preparing bias photon and method for preparing polarized light slice

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Please refer to Figure 4 As shown in the schematic diagram of tank configuration in the prior art, the unstretched PVA film 50 with a width of 650 mm and a thickness of 75 μm is transported by rollers, and is first swelled in pure water at 28° C. in the tank 68, and then used as a pretreatment Pretreatment is carried out in an aqueous solution at about 30° C. in the tank 70 of the tank. The aqueous solution in tank 70 contains 2.25% by weight of adipic acid and 0.3% by weight of aluminum sulfate hydrates (Al 2 (SO 4 ) 3 16~18H 2 O). After this pretreatment, dip in the iodine solution (containing iodine concentration of 0.033% by weight, boric acid concentration of 0.95% by weight, and potassium iodide concentration of 0.6 to 0.8% by weight) in the tank 72 at 30°C. The impregnated PVA film was stretched in a stretching tank 74 with a bath temperature of 51° C., and the stretching liquid contained 3.35% by weight of boric acid and 3.01% by weight of potassium iodide...

Embodiment 2

[0058] The production of polarizers was carried out as described in Example 1, but the bath temperature of bath 70 was adjusted to 35°C, and the bath temperature of the elongation bath was lowered to 46.5°C. Measure the elongation ratio, width (mm), film thickness (μm), transmittance (Ys, %), polarization degree (V, %), and hue b value of the obtained polarized photons, and the results are as follows Figure 5 shown in the table.

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Abstract

The invention discloses a method for preparing polarizing photon and polarizing sheet. The method for preparing polarizing photon includes providing a polyvinyl alcohol PVA film; soaking the PVA film in a first solution in order to execute preprocess, wherein the first solution includes at least a carboxyl acid or derivative thereof with at least two carboxyl, and at least a catalyzer catalyzing the reaction between the carboxyl acid and the PVA film surface; soaking the PVA film after preprocess in the dyeing solution to execute a tray dyeing process; soaking the PVA film after the tray dyeing process in a second solution, and meanwhile extending the PVA film, wherein the second solution includes a boric acid; and drying the PVA film after the extension process to form polarizing photon.

Description

technical field [0001] The invention relates to a method for preparing a polarizer and a polarizer, in particular to a method for manufacturing a polarizer used in a polarizer of a liquid crystal display. Background technique [0002] In the liquid crystal display, the polarizer is one of the indispensable components. Its purpose is to polarize the light that is not originally polarized and convert it into polarized light. Therefore, the liquid crystal display can use this polarized light , coupled with the twisting characteristics of the liquid crystal molecules themselves, to control the passage of light and the presentation of color signals. In recent years, as liquid crystal display elements are widely used in various electronic devices such as word processors, computer screens, mobile phones or LCD TVs, and even large outdoor display boards, vehicles, aircraft, navigation instruments and Satellites, etc. Therefore, the demand for polarizers is also increasing. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335
Inventor 傅从能蔡政欣
Owner DAXON TECH INC
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