Blue light polarizing thin film and preparation method thereof as well as blue light backlight source and liquid crystal display device

A polarizing film and backlight technology, applied in polarizing elements, chemical instruments and methods, optics, etc., can solve the problems of difficulty in controlling the uniformity of luminescent films, increased difficulty in synthesizing luminescent materials, and many luminescent substances

Inactive Publication Date: 2015-02-04
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With this method, the synthesis of luminescent materials is more difficult, and the uniformity of the luminescent film is difficult to control, and in terms of cost, more luminescent substances are consumed to achieve the same fluorescence intensity.

Method used

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  • Blue light polarizing thin film and preparation method thereof as well as blue light backlight source and liquid crystal display device
  • Blue light polarizing thin film and preparation method thereof as well as blue light backlight source and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. Preparation of blue light polarizing film

[0022] 1.1 Preparation of magnesium aluminum hydrotalcite

[0023] Magnesium aluminum hydrotalcite, its structural formula is Mg 2 Al(OH) 6 NO 3 LDH ([Mg 2 Al(OH) 6 NO 3 ].xH 2 O), weigh Mg(NO 3 ) 2 ·6H 2 O and Al(NO 3 ) 3 ·6H 2 O, and then they were dissolved in 100 mL of deionized aqueous solution in which Mg(NO 3 ) 2 ·6H 2 The concentration of O was controlled at 0.02mol / L, transferred to a three-necked flask, stirred under nitrogen protection, titrated with 0.5mol / L NaOH solution to pH=8.0, and the mixed solution was transferred to a reaction kettle and reacted in an oven at 80°C for 48h After the reaction, the product was centrifuged, washed and dried to obtain the target product Mg 2 Al(OH) 6 NO 3 LDH.

[0024] 1.2. Preparation of magnesium aluminum hydrotalcite solution

[0025] Take 1gMg 2 Al(OH) 6 NO 3 LDH was added into 100 mL of formamide and stirred for 16 h to obtain a formamid...

Embodiment 2

[0039] Embodiment 2. Preparation of blue light polarizing film

[0040] 2.1 Preparation of magnesium aluminum hydrotalcite

[0041] Magnesium aluminum hydrotalcite, its structural formula is Mg 2 Al(OH) 6 NO 3 LDH ([Mg 2 Al(OH) 6 NO 3 ].xH 2 O). Weigh Mg(NO 3 ) 2 ·6H 2 O and Al(NO 3 ) 3 ·6H 2 O, and then they were dissolved in 100 mL of deionized aqueous solution in which Mg(NO 3 ) 2 ·6H 2 The concentration of O was controlled at 0.12mol / L, transferred to a three-necked flask, stirred under nitrogen protection, titrated with 0.5mol / L NaOH solution to pH = 10.5, and the mixed solution was transferred to a reaction kettle and reacted in an oven at 160°C 10h, after the reaction, the product was centrifugally washed and dried to obtain the target product Mg 2 Al(OH) 6 NO 3 LDH.

[0042] 2.2. Preparation of magnesium aluminum hydrotalcite solution

[0043] Take 2g Mg 2 Al(OH) 6 NO 3 LDH was added into 100 mL of formamide and stirred for 16 h to obtain a form...

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Abstract

The invention discloses a blue light polarizing thin film and a preparation method thereof as well as a blue light backlight source and a liquid crystal display device. The blue light polarizing thin film disclosed by the invention is a multi-layer thin film formed by virtue of layer-by-layer deposition of magnesium-aluminum hydrotalcite and tri(8-hydroxyquinoline-5-sulfonic acid) aluminum. The maximum emission value of fluorescence spectrum of the blue light polarizing thin film disclosed by the invention is 470-490nm; within a blue light area and fractional anisotropy of fluorescence is 0.1-0.2, the thin film has a polarizing characteristic and is applicable to the backlight source of a liquid crystal display.

Description

technical field [0001] The invention relates to organic electroluminescence technology, in particular to a blue light polarizing film, a preparation method thereof, a blue light backlight source and a liquid crystal display device. Background technique [0002] In the development of organic electroluminescent devices, due to the scarcity of blue light materials, how to achieve blue light emission has always been a core issue. If blue light emission can be achieved, it can be further combined with green and red light emitting materials to form three primary color emission, so as to obtain white light emission. [0003] In the prior art, in order to achieve a certain uniform fluorescence intensity, it is necessary to introduce a luminescent substance into an inorganic matrix or a polymer. With this method, the synthesis of luminescent materials is more difficult, and the uniformity of the luminescent film is difficult to control, and in terms of cost, more luminescent substan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06G02B5/30G02F1/1335
CPCC09K11/06C09K2211/1029G02F1/133617C09K2211/186G02B5/305G02F1/133528G02F1/133514G02F1/133621
Inventor 肖昂
Owner BOE TECH GRP CO LTD
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