Quantum dot film with long service life, preparation method of quantum dot film and application of quantum dot film in liquid crystal display

A technology with quantum dot film and long service life, which can be used in instruments, ion implantation plating, coating, etc., and can solve the problems of the influence of quantum dot film service life, etc.

Pending Publication Date: 2021-04-23
DONGGUAN GUANGZHI PHOTOELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, quantum dot materials are sensitive to water vapor and oxygen due to their special properties, and both water vapor and oxygen in the environment will have a negative impact on the service life of quantum dot films

Method used

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  • Quantum dot film with long service life, preparation method of quantum dot film and application of quantum dot film in liquid crystal display
  • Quantum dot film with long service life, preparation method of quantum dot film and application of quantum dot film in liquid crystal display
  • Quantum dot film with long service life, preparation method of quantum dot film and application of quantum dot film in liquid crystal display

Examples

Experimental program
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preparation example Construction

[0047] The present invention also provides a method for preparing a quantum dot film with long service life as described above, comprising the following steps:

[0048] A) A ceramic layer B is formed on the surface of the second PET layer by magnetron sputtering, and a carbon functional layer B is formed by coating and solidifying the carbon material slurry B to obtain a second PET layer compounded with a second water-blocking layer. The ceramic Layer B and carbon functional layer B are formed in no particular order;

[0049] A ceramic layer A is formed on the surface of the first PET layer by magnetron sputtering, and a carbon functional layer A is formed by coating and solidifying a carbon material slurry A to obtain a first PET layer compounded with a first water blocking layer. The ceramic layer A The formation of the carbon functional layer A is in no particular order;

[0050] B) Coating quantum dot glue on the surface of the second water blocking layer to form a quantu...

Embodiment 1

[0086] Take a PET transparent film with a thickness of 38 μm, and form a SiO layer on its surface by magnetron sputtering. The target is a silicon target, and the gas is a mixture of argon and oxygen. The argon flow rate is 40 sccm, the oxygen flow rate is 40 sccm, and the sputtering power is 3 kW / m 2 , the roll-to-roll machine speed is 8m / min, and a SiO layer with a thickness of 130nm is obtained;

[0087] Mix graphene with polyurethane glue to obtain a graphene coating solution with a graphene content of 8%, then perform gravure coating on the surface of the SiO layer, and heat cure at 120°C to obtain a graphene layer with a thickness of 1.2 μm;

[0088] Take another 38 μm thick PET white film, form a 70nm thick SiO layer (roll-to-roll machine speed 15m / min) and a 1.2 μm thick graphene layer on its surface according to the above method;

[0089] On the graphene layer (PET white film) coating mass fraction is 5% CsPbBr 3 UV-curable acrylic pressure-sensitive adhesive with ...

Embodiment 2～12

[0092] Prepare the quantum dot film according to the method in Example 1, the difference is that it is prepared according to the structural parameters in Table 1:

[0093] The film layer thickness of table 1 embodiment 1~12 (all are transparent PET films up and down)

[0094]

[0095] Among them, in the preparation of the SiO layer with a thickness of 130nm, the roll-to-roll machine speed is 8m / min, and in the preparation of the SiO layer with a thickness of 70nm, the roll-to-roll machine speed is 15m / min.

[0096] In the preparation of the carbon functional layer with a thickness of 1.2 μm and 1.3 μm, the content of the carbon material in the carbon material slurry is 8%, and in the preparation of the carbon functional layer with a thickness of 2.1 μm, the content of the carbon material in the carbon material slurry is 15% .

[0097] The quantum dot films prepared in Examples 1-12 are tested as follows, the light source is a blue-violet lamp (LED backlight) x=0.2931y=0.15...

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Abstract

The invention provides a quantum dot film with long service life. The quantum dot film comprises a first PET layer, a first waterproof layer, a quantum dot layer, a second waterproof layer and a second PET layer which are in contact in sequence, the first waterproof layer comprises a ceramic layer A and a carbon functional layer A; the second waterproof layer comprises a ceramic layer B and a carbon functional layer B; the ceramic layer A and the ceramic layer B are respectively and independently selected from silicon oxide and / or silicon nitride; and the carbon functional layer A and the carbon functional layer B respectively and independently comprise graphene and / or carbon nanotubes. By utilizing the loose and defective structures of the carbon nanotubes and graphene, water vapor can be stored, the water vapor can be stored after entering the PET water-blocking and gas-blocking film, the service life of the quantum dot film can be prolonged, and the film form can disperse heat and is not easy to concentrate in a local area. The invention provides a preparation method and application of a quantum dot film with long service life.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a quantum dot film with long service life, its preparation method and its application in liquid crystal display. Background technique [0002] After half a century of development and research, liquid crystal display (LCD) has become the dominant flat panel display technology. Since LCDs do not emit light themselves, they require a backlight. Cold Cathode Fluorescent Lamp (CCFL) used to be the most common backlight, but it can only achieve 75% NTSC color gamut, so in order to get wider color gamut, higher brightness and lower energy consumption, white so, research People are working on developing newer backlight technology to improve these problems. [0003] Quantum dot film, as a new nanomaterial with unique light characteristics, can accurately and efficiently convert high-energy blue light into red and green light. Quantum dots can form a thin film ...

Claims

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Application Information

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IPC IPC(8): G02F1/13357C23C14/35C23C14/10C23C14/08C23C14/06
CPCG02F1/1336C23C14/35C23C14/10C23C14/0652C23C14/0641C23C14/081
Inventor 邓建东吴伟权
Owner DONGGUAN GUANGZHI PHOTOELECTRIC CO LTD
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