CN209928183U

CN209928183U - Device for manufacturing composite quantum dots

Info

Publication number: CN209928183U
Application number: CN201920069526.3U
Authority: CN
Inventors: 邱晓华; 舒燕
Original assignee: Nantong Wei Erison Mstar Technology Ltd
Current assignee: Nantong Wei Erison Mstar Technology Ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-01-10
Anticipated expiration: 2029-01-16

Abstract

The utility model relates to a device for manufacturing composite quantum dots, which comprises a bottom plate, and a barrier film and a quantum glue layer which are sequentially overlapped on the bottom plate; the bottom plate is a diffusion plate. Reasonable in design, simple structure, long service life, stable performance. The utility model provides a preparation facilities of compound quantum dot, it includes diffuser plate extruder, first compression roller, second compression roller, quantum dot coating device, ultraviolet lamp and carry over pinch rolls. Reasonable in design, simple structure can once only realize the processing preparation of compound quantum dot, convenient and fast, and production efficiency is high.

Description

Device for manufacturing composite quantum dots

Technical Field

The utility model relates to the field of optical technology, concretely relates to making devices of compound quantum dot.

Background

With the advent of the digital age, Liquid Crystal Displays (LCDs) have become the most popular display technology today. Because the LCD has the advantages of environmental protection, low energy consumption, low radiation, soft picture and the like, the LCD will be the mainstream display technology in the coming decades. LCDs are non-emissive display devices that require a backlight to achieve their display function. Besides the direct impact on the display quality of LCD, the cost of backlight source is 3-5% of LCD module, and the power consumption is more 75% of LCD module, which is a very important component of LCD module. Since high performance backlight technology must be used in conjunction with high definition and large size LCDs, the LCD industry is striving to develop new application fields, and the high performance of the backlight technology also plays a role as a rear assistant.

The main components of the backlight system include: light source, light guide plate, and various optical films. At present, light sources mainly include three types, namely EL, CCFL and LED, and are classified into an edge type and a direct type according to different light source distribution positions. As LCD modules are continuously developed to be brighter, lighter and thinner, the side-light CCFL backlight becomes the mainstream of backlight development at present.

The optical film in the backlight system mainly comprises a reflecting film, a diffusion film and a brightness enhancement film. The diffusion film mainly functions to transmit light emitted from the light guide plate through the diffusion particles to achieve the effect of atomizing the light source. When light passes through the diffusion layer, the light can pass through media with different refractive indexes, and the light can generate a plurality of refraction, reflection and scattering phenomena due to the different refractive indexes and different incident angles, so that the light can be corrected to form a uniform surface light source to achieve the effect of optical diffusion.

The white light LED used in the backlight module mainly has two types: one is that the blue light emitted by the LED excites the yellow fluorescent powder, and the two colors are mixed into white light; the other is that the LED units are mixed into white light by three primary color LED light sources. However, the color gamut of the display made by the two current white light sources is narrow, the maximum color gamut can only reach 75% of NTSC, and the surface force of the color is obviously insufficient;

therefore, a third backlight technology is currently being produced: by using a blue LED and exciting two kinds of quantum dot fluorescent powder of red and green, the three kinds of light are mixed into white light, and by using the method, the color gamut of the display can be improved from 75% NTSC to 100% NTSC.

However, due to the sensitivity of the quantum dots to water, a certain technical means is required to isolate the quantum dots from water vapor, such as the following patent applications: 201310473832.0, it adopts a way of coating a layer of water vapor barrier layer on the surface of the diffusion layer to block water vapor, but this method can only block water vapor entering from the surface to the inside, because there is no barrier layer on the end face of the film, it can't block the water vapor entering from the end face to the inside, after the display is used for a long time, there are problems of quantum dot failure and abnormal color of the edge of the display.

In view of the above technical problems, there is a need for a quantum dot diffusion film with stable performance.

Disclosure of Invention

The utility model provides a compound quantum dot that performance is more stable and one kind can convenient and fast, the making devices of compound quantum dot of efficient preparation thereof.

The technical scheme of the utility model:

a composite quantum dot comprises a bottom plate, and a barrier film and a quantum adhesive layer which are sequentially stacked on the bottom plate; the bottom plate is a diffusion plate.

The quantum dot layer is coated on the diffusion plate, the barrier film is covered on one side of the quantum dot layer, and oxygen, water vapor and the like are thoroughly isolated from the quantum dots through the barrier film, so that the service life of the quantum dot diffusion plate is ensured, and the performance stability of the quantum dot diffusion plate is ensured.

The technical scheme is further improved and refined, and the quantum glue layer is formed by uniformly coating quantum glue on the bottom plate and curing.

The technical scheme is further improved and refined, and the diffusion plate is one of a PC diffusion plate, a PS diffusion plate, a PMMA diffusion plate and an MS diffusion plate.

A manufacturing device of composite quantum dots comprises a diffusion plate extruder, a first compression roller, a second compression roller, a quantum dot coating device, an ultraviolet lamp and a traction roller; the first compression roller is arranged at the outlet side of the diffusion plate extruder and comprises an upper compression roller and a lower compression roller which are arranged in parallel, a gap is reserved between the upper compression roller and the lower compression roller, the upper compression roller and the lower compression roller rotate oppositely along the output direction of the diffusion plate, and the lower compression roller is positioned at the cold compression roller; the second compression roller is arranged at the outlet side of the first compression roller and comprises two compression rollers which are horizontally arranged in parallel, a gap is reserved between the two compression rollers, and the two compression rollers rotate oppositely along the output direction of the diffusion plate; the quantum dot coating device comprises a coating head, a pump and a glue barrel, wherein the glue barrel is connected with the coating head through the pump, the coating head is arranged above the second press roller, and an outlet of the coating head is opposite to a gap between the two press rollers of the second press roller; the ultraviolet lamp and the traction roller are sequentially arranged on the outlet side of the second compression roller.

The raw and other materials of diffuser plate advance the diffuser plate extruder and extrude to become the diffuser plate through first compression roller cold pressing, fashioned diffuser plate is passing through the second compression roller, and through the second compression roller simultaneously, quantum dot coating device coats one deck quantum point on the diffuser plate and glues, and introduce the separation membrane and cover and glue the second compression roller pressfitting together at the quantum dot, pass through the ultraviolet lamp and shine quantum point and glue solidification and become the quantum dot layer, realize the disposable preparation shaping of compound quantum dot, exporting through the carry over pinch rolls.

The technical scheme is further improved and refined, and the coating head is a slit type extrusion coating head and has a good coating effect.

The technical scheme is further improved and refined, and the barrier film frame is arranged on the second compression roller side, so that the barrier film is convenient to pull.

The technical scheme is further improved and refined, and a diffusion plate coiling device is further arranged on the side of the traction roller and used for collecting the composite quantum dot diffusion plate.

The technical proposal is further improved and refined, and the diameter of one press roll of the second press roll close to the first press roll is 1-1.2 m.

The technical proposal is further improved and refined, and the gap between the upper compression roller and the lower compression roller is 0.5-2.0 mm.

The utility model has the advantages of reasonable design, simple structure, long service life and stable performance of the composite quantum dots; the manufacturing device of the composite quantum dots has the advantages of reasonable design, simple structure, convenience and rapidness, and high production efficiency, and can realize the processing and manufacturing of the composite quantum dots at one time.

Drawings

Fig. 1 is a schematic structural diagram of a composite quantum dot.

Fig. 2 is a flow chart of composite quantum dot fabrication.

In the figure, a bottom plate 1, a barrier film 2, a quantum glue layer 3, a diffusion plate extruder 4, a first press roller 5, a second press roller 6, a quantum dot coating device 7, an ultraviolet lamp 8 and a traction roller 9 are arranged.

Detailed Description

As shown in fig. 1, a composite quantum dot comprises a base plate 1, and a barrier film 2 and a quantum glue layer 3 which are sequentially stacked on the base plate; the bottom plate 1 is a diffusion plate; the quantum glue layer 3 is formed by uniformly coating quantum glue on the bottom plate and curing; the diffusion plate is one of a PC diffusion plate, a PS diffusion plate, a PMMA diffusion plate and an MS diffusion plate.

As shown in fig. 2, a device for manufacturing composite quantum dots comprises a diffusion plate extruder 4, a first press roll 5, a second press roll 6, a quantum dot coating device 7, an ultraviolet lamp 8 and a traction roll 9; the first compression roller 5 is arranged at the outlet side of the diffusion plate extruder 4 and comprises an upper compression roller and a lower compression roller which are arranged in parallel, a gap is reserved between the upper compression roller and the lower compression roller, the upper compression roller and the lower compression roller rotate oppositely along the output direction of the diffusion plate, and the lower compression roller is positioned at a cold compression roller; the second compression roller 6 is arranged at the outlet side of the first compression roller 4 and comprises two compression rollers which are horizontally arranged in parallel, a gap is reserved between the two compression rollers, and the two compression rollers rotate oppositely along the output direction of the diffusion plate; the quantum dot coating device 7 comprises a coating head, a pump and a glue barrel, the glue barrel is connected with the coating head through the pump, the coating head is arranged above the second press roller 6, and an outlet of the coating head is opposite to a gap between the two press rollers of the second press roller 6; the ultraviolet lamp 8 and the traction roller 9 are sequentially arranged on the outlet side of the second compression roller; the coating head is a slit type extrusion coating head, and the coating effect is good; a barrier film frame is arranged on the side of the second compression roller, so that the barrier film is convenient to pull; a diffusion plate coiling device is also arranged on the side of the traction roller 9 and used for collecting the composite quantum dot diffusion plate; the diameter of one press roll of the second press roll 6 close to the first press roll 5 is 1-1.2 m; the gap between the upper pressing roll and the lower pressing roll is 0.5-2.0 mm.

Because of the limited character expression, there exists an infinite concrete structure objectively, for those skilled in the art, without departing from the principle of the present invention, a plurality of improvements, decorations or changes can be made, and the above technical features can be combined in a proper way; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. A manufacturing device of composite quantum dots comprises a bottom plate, and a barrier film and a quantum adhesive layer which are sequentially overlapped on the bottom plate; the bottom plate is a diffusion plate; the method is characterized in that: the manufacturing device comprises a diffusion plate extruder, a first compression roller, a second compression roller, a quantum dot coating device, an ultraviolet lamp and a traction roller; the first compression roller is arranged at the outlet side of the diffusion plate extruder and comprises an upper compression roller and a lower compression roller which are arranged in parallel, a gap is reserved between the upper compression roller and the lower compression roller, the upper compression roller and the lower compression roller rotate oppositely along the output direction of the diffusion plate, and the lower compression roller is positioned at the cold compression roller; the second compression roller is arranged at the outlet side of the first compression roller and comprises two compression rollers which are horizontally arranged in parallel, a gap is reserved between the two compression rollers, and the two compression rollers rotate oppositely along the output direction of the diffusion plate; the quantum dot coating device comprises a coating head, a pump and a glue barrel, wherein the glue barrel is connected with the coating head through the pump, the coating head is arranged above the second press roller, and an outlet of the coating head is opposite to a gap between the two press rollers of the second press roller; the ultraviolet lamp and the traction roller are sequentially arranged on the outlet side of the second compression roller.

2. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: the quantum glue layer is formed by uniformly coating quantum glue on the bottom plate and curing.

3. A device for manufacturing composite quantum dots according to claim 1, wherein the diffuser plate is one of PC diffuser plate, PS diffuser plate, PMMA diffuser plate and MS diffuser plate.

4. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: the coating head is a slit type extrusion coating head.

5. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: and a blocking film frame is arranged on the side of the second compression roller.

6. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: and a diffusion plate coiling device is also arranged on the side of the traction roller.

7. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: the diameter of one press roller of the second press roller, which is close to the first press roller, is 1-1.2 m.

8. The apparatus for manufacturing a composite quantum dot according to claim 1, wherein: the gap between the upper pressing roll and the lower pressing roll is 0.5-2.0 mm.