Liquid crystal display quantum dot low-blue-light module

Abstract

The utility model relates to the technical field of display, and discloses a liquid crystal display quantum dot low-blue-light module which comprises a lamp panel assembly, and the lamp panel assembly comprises a light source driving circuit board, a plurality of LED lamps, a flexible transparent conductive base layer, a waterproof blue-light-proof layer and a quantum dot film layer. The lamp panel assembly, the flexible transparent conductive base layer, the waterproof blue-light-proof layer and the quantum dot film layer are stacked from bottom to top. According to the utility model, the structure is simple, the display color gamut is expanded and the color saturation and the display effect are improved by utilizing the advantage of high color purity of the quantum dots, the energy consumption is reduced and the endurance of equipment is improved by utilizing the higher luminous efficiency of the quantum dots, and meanwhile, the harm generated by blue light is reduced by utilizing the blue-light-proof layer and the low-blue-light LED lamp.

Description

Technical Field

[0001] The utility model belongs to the field of display technology, and in particular relates to a liquid crystal display quantum dot low blue light module. Background Art

[0002] In today's information technology era, display technology, as the terminal of the information chain, has become a vital link in information transmission and is widely used in many aspects of daily life. In recent years, with the growing demand for higher-quality displays, many new display technologies have been continuously developed, such as flexible display technology. Thanks to its advantages such as low energy consumption and ultra-thinness, flexible display technology can break free from the constraints of traditional display forms and become one of the most promising and competitive display technologies in the future, with broad application prospects.

[0003] However, despite its numerous advantages, flexible display technology faces numerous challenges in practical application. To meet the requirements of bending resistance and resistance to breakage, only some solid-state light-emitting devices can be further developed into flexible displays. Among the current generation of flexible display products, those that have already reached commercial application are primarily achieved by transferring hard-screen display technology, which already has a certain degree of technical maturity and industrial foundation, onto flexible substrates. This still results in some limitations, such as difficulty in color reproduction to meet growing demand.

[0004] Quantum dot luminescent materials have become a key material for next-generation displays due to their excellent luminescence properties. They offer the advantages of purer colors and the ability to achieve a wider display color gamut. Specifically, quantum dots have fewer vibrational energy levels, and their energy distribution depends primarily on their microscopic size. Therefore, by controlling the quantum dot production process, the size distribution of the quantum dots can be manipulated, resulting in purer monochromatic light. Furthermore, because the luminescence spectrum of quantum dots changes with their size, controlling their size can be used to control the production of visible light of varying wavelengths. Furthermore, quantum dot luminescent materials offer higher luminescence efficiency. Therefore, using quantum dot luminescent materials to form films and developing display devices based on them is of great significance for promoting the further development of flexible display technology.

[0005] At the same time, driven by health concerns, display devices are constantly innovating and upgrading their blue light protection technology. Blue light can be divided into two wavelengths: blue-violet light (415-455nm) and blue-green light (465-495nm). Existing research shows that the shorter wavelength of blue-violet light has strong penetrating power, causing damage and atrophy of retinal pigment epithelial cells and photoreceptor cells, leading to retinal damage and irreversible vision loss or even loss. Therefore, the blue light protection performance of display devices has also attracted much attention.

[0006] Currently, flexible displays are achieved by combining flexible substrates with light-emitting devices. However, these displays have limitations in terms of color purity and color gamut coverage. Existing flexible displays have low color purity and a narrow color gamut, making them difficult to meet the demands of higher-level displays. Their high energy consumption also affects the device's battery life. Liangwai quantum dot flexible films also suffer from poor stability. Furthermore, existing flexible displays emit slightly shorter-wavelength blue-violet light, which can cause retinal damage and affect vision.

[0007] Therefore, there is an urgent need for a liquid crystal display quantum dot low blue light module to solve the above technical problems. Utility Model Content

[0008] The purpose of this utility model is to overcome the problems of limited display color gamut coverage, insufficient color saturation, high energy consumption, blue light leakage and poor stability of quantum dot flexible film in existing displays, and to provide a liquid crystal display quantum dot low blue light module with the advantages of blue light protection, high color gamut, and applicability in a variety of environments.

[0009] In order to achieve the above-mentioned purpose, the present invention is implemented according to the following technical solutions:

[0010] A liquid crystal display quantum dot low blue light module includes a light board assembly, which includes a light source driving circuit board, multiple LED lights, a flexible transparent conductive base layer, a waterproof and blue light proof layer, and a quantum dot film layer; the light board assembly, the flexible transparent conductive base layer, the waterproof and blue light proof layer, and the quantum dot film layer are stacked from bottom to top.

[0011] Preferably, the LED lamp is a low blue light LED lamp; the light source driving circuit board drives the low blue light LED lamp to emit white light.

[0012] Existing white LEDs mostly use blue LEDs to excite YAG yellow phosphors to produce white light. Therefore, this utility model utilizes low-blue LEDs, such as Huaxing's low-blue technology, which redshifts the dominant wavelength of blue LEDs, and Antai Blue, a low-blue LED with a special blue light protection layer. The light panel assembly serves as the backlight source, with low-blue LEDs providing white light, which is then transformed into color by red, green, and blue monochromatic liquid crystal microcapsules.

[0013] Preferably, the flexible transparent conductive base layer includes a flexible transparent conductive film and a liquid crystal microcapsule coating layer that are stacked.

[0014] The flexible transparent conductive film and the liquid crystal microcapsule coating layer of the flexible transparent conductive base layer are stacked in the same manner. The flexible transparent conductive film can be located on the lower side (the side close to the light board assembly) and the liquid crystal microcapsule coating layer can be located on the upper side (the side away from the light board assembly); or the flexible transparent conductive film can be located on the upper side (the side away from the light board assembly) and the liquid crystal microcapsule coating layer can be located on the lower side (the side close to the light board assembly). Preferably, the flexible transparent conductive film is located on the lower side (the side close to the light board assembly) and the liquid crystal microcapsule coating layer is located on the upper side (the side away from the light board assembly).

[0015] Preferably, the thickness of the flexible transparent conductive film is 100-150 μm; the flexible transparent conductive film is an indium tin oxide (ITO) coating.

[0016] Preferably, the liquid crystal microcapsule coating layer includes a transparent polymer adhesive layer and red liquid crystal microcapsules, green liquid crystal microcapsules, and blue liquid crystal microcapsules uniformly distributed in the transparent polymer adhesive layer.

[0017] The liquid crystal microcapsule coating layer in the utility model can be obtained by using existing technology.

[0018] The red, green and blue monochrome liquid crystal microcapsules (chiral nematic liquid crystals) are mixed with a transparent polymer glue (such as epoxy acrylic glue) to obtain a mixed material, and the mixed material is coated on a flexible transparent conductive film to obtain a liquid crystal microcapsule coating layer; the flexible transparent conductive film plus the liquid crystal microcapsule coating layer obtains a flexible transparent conductive base layer.

[0019] Flexible transparent conductive films are primarily made of ITO (indium tin oxide) via sputtering and evaporation, with a film thickness of 100-150 μm. These films offer optimal transparency and conductivity, demonstrating exceptional high transparency and surface conductivity. They also exhibit excellent dimensional stability when exposed to heat and excellent durability. The use of liquid crystal microcapsules imparts excellent optoelectronic and temperature-sensitive properties to the flexible transparent conductive substrate, protecting the material from environmental contamination during use and enhancing its performance in the display field.

[0020] Preferably, the waterproof and blue light-proof layer includes a waterproof layer and a blue light-proof layer that are stacked.

[0021] The waterproof and blue light-proof layers are stacked in the same way. The waterproof layer can be located on the lower side (close to the light board assembly) and the blue light-proof layer on the upper side (away from the light board assembly). Alternatively, the waterproof layer can be located on the upper side (away from the light board assembly) and the blue light-proof layer on the lower side (close to the light board assembly). Preferably, the waterproof layer is located on the lower side (close to the light board assembly) and the blue light-proof layer is located on the upper side (away from the light board assembly).

[0022] Preferably, the thickness of the waterproof layer is 0.1 to 0.15 mm; and the waterproof layer is a polytetrafluoroethylene layer.

[0023] Preferably, the anti-blue light layer has a thickness of 20 to 25 nm; and the anti-blue light layer is an aluminum silicate layer.

[0024] The aluminum silicate hydrochloride layer can be formed by vacuum coating process, in which the aluminum silicate hydrochloride compound is plated on the surface of the waterproof layer to prevent blue light.

[0025] Preferably, the quantum dot film layer is a perovskite quantum dot film layer.

[0026] Preferably, the chemical formula of the perovskite quantum dot material used in the perovskite quantum dot film layer is CsPbCl3.

[0027] Preferably, the perovskite quantum dot film layer is a light-cured perovskite quantum dot film, specifically a UV-cured perovskite quantum dot film. The UV-curing here is UV curing, such as the UV curing used in the patent publication number CN118876622A.

[0028] UV-curable perovskite quantum dot films are created by adding ultraviolet light to a crosslinker-based perovskite suspension to fix the material, forming closed-loop molecules. UV light instantaneously penetrates the suspension, activating the crosslinking units and instantly generating free radicals. These free radicals then polymerize to form a crosslinking kinetic reaction, forming a solid network structure and a stable curing environment.

[0029] Blue quantum dots are added to the quantum dot film of the present invention (the blue quantum dots referred to in the present invention are the perovskite quantum dot material CsPbCl3). The blue quantum dots can emit blue light under the excitation of the blue light emitted by the light panel assembly. It has the characteristics of good luminous intensity, wide luminous color range and good stability, and can significantly improve the color performance and brightness of the display device. The luminous area of ​​the blue quantum dots is located in the blue-violet band, about 410±10nm, and is not a harmful blue-green band. The three monochrome liquid crystal microcapsules are the basis of color display. The harmful blue-green light emitted is absorbed by the anti-blue light layer, which greatly reduces the content of harmful blue light; the blue quantum dots also play a role in supplementing blue light and enriching colors.

[0030] The utility model achieves the following beneficial effects:

[0031] This utility model has a simple structure. It takes advantage of the high color purity of quantum dots to expand the display color gamut, improve color saturation and display effects, and uses the higher luminous efficiency of quantum dots to reduce energy consumption and improve device life. At the same time, it uses an anti-blue light layer and low-blue light LED lamps to reduce the harm caused by blue light. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the utility model;

[0033] Figure 2 This is a flow chart of the preparation process of the liquid crystal display quantum dot low blue light module of the utility model.

[0034] In the figure: 1. Light source driver circuit board; 2. LED lamp; 3. Flexible transparent conductive base layer; 4. Waterproof and anti-blue light layer; 5. Quantum dot film layer. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0036] Example 1

[0037] like Figure 1 As shown, a liquid crystal display quantum dot low blue light module includes a light board assembly, which includes a light source driving circuit board 1, multiple LED lights 2, and also includes a flexible transparent conductive base layer 3, a waterproof and anti-blue light layer 4, and a quantum dot film layer 5; the light board assembly, flexible transparent conductive base layer, waterproof and anti-blue light layer, and quantum dot film layer are stacked from bottom to top.

[0038] The LED lamp is a low blue light LED lamp; the light source driving circuit board drives the low blue light LED lamp to emit white light.

[0039] The flexible transparent conductive base layer includes a stacked flexible transparent conductive film and a liquid crystal microcapsule coating layer, wherein the flexible transparent conductive film is located on the lower side (close to the light board assembly) and the liquid crystal microcapsule coating layer is located on the upper side (away from the light board assembly).

[0040] The thickness of the flexible transparent conductive film is 125 μm; the flexible transparent conductive film is an indium tin oxide coating.

[0041] The liquid crystal microcapsule coating layer comprises a transparent polymer adhesive layer and red liquid crystal microcapsules, green liquid crystal microcapsules and blue liquid crystal microcapsules uniformly distributed in the transparent polymer adhesive layer.

[0042] The waterproof and blue light-proof layer includes a waterproof layer and a blue light-proof layer stacked together, wherein the waterproof layer is preferably located on the lower side (the side close to the light panel assembly) and the blue light-proof layer is located on the upper side (the side away from the light panel assembly).

[0043] The thickness of the waterproof layer is 0.1 mm; the waterproof layer is a polytetrafluoroethylene layer.

[0044] The thickness of the anti-blue light layer is 20 nm; the anti-blue light layer is an aluminum silicate layer.

[0045] The quantum dot film layer is a perovskite quantum dot film layer, and the chemical formula of the perovskite quantum dot material used is CsPbCl3. The perovskite quantum dot film layer is prepared by ultraviolet curing method.

[0046] Example 2

[0047] The difference between this embodiment and embodiment 1 is that, in this embodiment, the thickness of the waterproof layer is 0.15 mm; the thickness of the anti-blue light layer is 25 nm.

[0048] Example 3

[0049] The difference between this embodiment and embodiment 1 is that, in this embodiment, the thickness of the waterproof layer is 0.12 mm; the thickness of the anti-blue light layer is 23 nm.

[0050] Example 4

[0051] The difference between this embodiment and embodiment 1 is that:

[0052] In the flexible transparent conductive base layer, the flexible transparent conductive film is located on the upper side (the side away from the light board assembly) and the liquid crystal microcapsule coating layer is located on the lower side (the side close to the light board assembly);

[0053] In the waterproof and blue light protection layer, the waterproof layer is located on the upper side (away from the light board assembly) and the blue light protection layer is located on the lower side (close to the light board assembly)

[0054] Example 5

[0055] like Figure 2 The figure shows a process flow chart for preparing the liquid crystal display quantum dot low blue light module according to Example 1; the specific steps are:

[0056] S1, preparation of perovskite quantum dot film by UV curing:

[0057] First, using high-energy ball milling and UV curing technology, an organic film layer with highly dispersed quantum dots was in situ grown on ITO glass (Indium Tin Oxides) as a photoluminescent layer.

[0058] The ultraviolet light curing technology here is UV curing, such as the UV curing used in the patent publication number CN118876622A, which is to use ultraviolet light to initiate the polymerization of resin containing active functional groups into an insoluble and infusible solid coating film;

[0059] S2, coating with waterproof and blue light-proof layer: coating a waterproof and blue light-proof layer on one side of the film;

[0060] S3, coating a flexible transparent conductive base layer: coating a flexible conductive transparent base layer on one side of the waterproof and blue light-proof layer;

[0061] S4, installing the light board assembly: installing the quantum dot film coated with a flexible conductive transparent base layer onto the light board assembly.

[0062] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims

1. A liquid crystal display quantum dot low blue light module, comprising a light board assembly, the light board assembly including a light source driver circuit board and multiple LED lights, characterized in that: It also includes a flexible transparent conductive base layer, a waterproof and blue light-proof layer, and a quantum dot film layer; the light panel assembly, the flexible transparent conductive base layer, the waterproof and blue light-proof layer, and the quantum dot film layer are stacked from bottom to top.

2. The liquid crystal display quantum dot low blue light module according to claim 1, characterized in that: The LED lamp is a low blue light LED lamp; the light source driving circuit board drives the low blue light LED lamp to emit white light.

3. The liquid crystal display quantum dot low blue light module according to claim 1, characterized in that: The flexible transparent conductive base layer comprises a flexible transparent conductive film and a liquid crystal microcapsule coating layer which are stacked.

4. The liquid crystal display quantum dot low blue light module according to claim 3, characterized in that: The thickness of the flexible transparent conductive film is 100 to 150 μm; The flexible transparent conductive film is an indium tin oxide coating.

5. The liquid crystal display quantum dot low blue light module according to claim 3, characterized in that: The liquid crystal microcapsule coating layer comprises a transparent polymer adhesive layer and red liquid crystal microcapsules, green liquid crystal microcapsules and blue liquid crystal microcapsules uniformly distributed in the transparent polymer adhesive layer.

6. The liquid crystal display quantum dot low blue light module according to claim 1, characterized in that: The waterproof and blue light-proof layer comprises a waterproof layer and a blue light-proof layer which are stacked.

7. The liquid crystal display quantum dot low blue light module according to claim 6, characterized in that: The thickness of the waterproof layer is 0.1-0.15 mm; the waterproof layer is a polytetrafluoroethylene layer.

8. The liquid crystal display quantum dot low blue light module according to claim 6, characterized in that: The thickness of the anti-blue light layer is 20-25 nm; the anti-blue light layer is an aluminum silicate layer.

9. The liquid crystal display quantum dot low blue light module according to claim 1, characterized in that: The quantum dot film layer is a perovskite quantum dot film layer.

10. The liquid crystal display quantum dot low blue light module according to claim 9, characterized in that: The chemical formula of the perovskite quantum dot material used in the perovskite quantum dot film layer is CsPbCl3.

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