Preparation method of quantum dot membrane light-guide component and corresponding backlight module

A technology of quantum dot film and light guide components, which is applied in the direction of optical components, light guides, optics, etc., to achieve the effects of light and thin appearance, protection stability, and improvement of conversion efficiency

Active Publication Date: 2018-08-10
NINGBO DXC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The light guide plates used in traditional liquid crystal display devices are mainly optical-grade acrylic (PMMA) / PC materials, and the thickness is generally 3-5mm, which makes it difficult to reduce the thickness of the display device

Method used

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  • Preparation method of quantum dot membrane light-guide component and corresponding backlight module
  • Preparation method of quantum dot membrane light-guide component and corresponding backlight module

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preparation example Construction

[0026] see Figure 1~2 , the present invention provides a technical solution: a method for preparing a quantum dot film light guide assembly, the quantum dot film light guide assembly 13 includes a glass light guide plate 21, a red quantum dot layer 22, a green quantum dot layer arranged in sequence from bottom to top Dot layer 23 and substrate layer 24; described red quantum dot layer 22, green quantum dot layer 23 and substrate layer 24 form the quantum dot film of pressure-sensitive adhesive type, and the specific preparation of described quantum dot film light guide assembly 13 includes Follow the steps below:

[0027] 1) Evenly disperse 0.2% by mass of red quantum dot powder and 1-3% by mass of diffusion particles in 10% by mass of monomer to form a red quantum dot stock solution; then, mix the red quantum dot stock solution with 85- 90% by mass of the UV-curable acrylic pressure-sensitive glue is mixed evenly to form a red quantum dot glue, and the mass part is the rati...

Embodiment 1

[0045] A method for preparing a quantum dot film light guide assembly, the specific steps are:

[0046] 1) Disperse 0.2% by mass of red quantum dot powder and 1-3% by mass of ZnO diffusion particles in 10% by mass of monomer to form a red quantum dot stock solution; then, mix the red quantum dot stock solution with 85 ~90% by mass of the UV-curable acrylic pressure-sensitive adhesive is mixed evenly to form a red quantum dot glue, and the mass part is the ratio of the total mass of the red quantum dot glue;

[0047] 2) Evenly disperse 0.8% by mass of green quantum dot powder and 1-3% by mass of ZnO diffusion particles in 10% by mass of monomer to form a green quantum dot stock solution; then, mix the green quantum dot stock solution with 20 ~30% by mass of monomer, 45~60% by mass of acrylic resin and 1~3% by mass of photoinitiator (Irgacure819 or TPO) are mixed uniformly to form green quantum dot glue, and the mass part is mixed with green quantum dot glue The ratio of the to...

Embodiment 2

[0052] A method for preparing a quantum dot film light guide assembly, the difference from Example 1 is that after the quantum dot film and the glass light guide plate are bonded to form the quantum dot film light guide assembly, the four side end faces of the quantum dot film light guide assembly An organic coating with water-blocking and oxygen-blocking functions and good light transmittance is applied on the seal coat. In this embodiment, the water-blocking organic coating is preferably polyvinylidene chloride, and the oxygen-blocking organic coating is preferably polyvinyl alcohol.

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Abstract

The invention discloses a preparation method of a quantum dot membrane light-guide component and a corresponding backlight module, wherein the quantum dot membrane light-guide component includes a glass light-guide plate, a red quantum dot layer, a green quantum dot layer and a base layer arranged sequentially from the bottom to the top. The specific preparation of the quantum dot membrane light-guide component includes the steps of 1), preparing red quantum dot glue; 2) preparing green quantum dot glue; 3) using an applicator to apply the prepared green quantum dot glue to a base, forming a wet membrane; semi-curing the wet membrane with a UV (ultraviolet) curing device; 4) using the applicator to apply the red quantum dot glue to the semi-cured green quantum dot glue layer of step 3), covering with a protective membrane, and fully curing with the UV curing device. The preparation method has the advantages that the quantum dot membrane has higher blue light conversion efficiency and more stable fluorescent performance; the display effect is enhanced, the thickness of a QLCD (quantum-dot liquid crystal display) is decreased, and a product is lighter, thinner and more attractive.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display screens, in particular to a preparation method of a quantum dot film light guide assembly and a corresponding backlight module. Background technique [0002] The backlight using quantum dot material is the backlight with the highest color purity at present. The liquid crystal display device using this kind of backlight has the advantages of high color purity, strong reduction ability, and excellent color rendering performance. Therefore, quantum dots have been widely used in the field of liquid crystal display. a wide range of applications. [0003] A general quantum dot liquid crystal display device (QLCD) consists of two parts: a liquid crystal panel and a backlight module. The backlight module is composed of light source, reflective film, light guide plate, quantum dot film, brightness enhancement film and diffusion film. The light from the light source enters the interior from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00
CPCG02B6/005G02B6/0073G02F1/133603G02F1/133606G02F1/133614
Inventor 罗培栋赵杨樊华伟
Owner NINGBO DXC NEW MATERIAL TECH
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