Backlight module, display device and assembling method of backlight module

Abstract

The application discloses a backlight module, a display device and an assembling method of the backlight module. The backlight module comprises an assembling frame, a quantum dot film and a barrier medium. The assembling frame has an assembling cavity, and the quantum dot film is arranged in the assembling cavity. The barrier medium is arranged in the assembling cavity and is connected with the peripheral side surface of the quantum dot film and the inner peripheral surface of the assembling cavity. The barrier medium comprises at least one hydrophobic connecting part arranged on the peripheral side surface of the quantum dot film. The hydrophobic connecting part is used for preventing external water vapor from entering the peripheral side surface of the quantum dot film.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a backlight module, a display device, and a method for assembling the backlight module. Background Technology

[0002] As the consumer electronics market continues to demand an ultimate visual experience, displays are evolving towards a "borderless" design, requiring the bezel area to be compressed to a width almost imperceptible to the naked eye. Quantum dot backlight technology, due to its ability to significantly improve color gamut and luminous efficiency, has become the preferred solution for high-end TVs, laptops, and automotive displays. Its core approach involves placing a conversion film containing red and green quantum dots above a light guide plate or mini-LED array, using blue backlighting to excite and obtain high-purity white light.

[0003] However, because quantum dot materials are extremely sensitive to water and oxygen, in existing displays, the end face of the quantum dot film is easily oxidized, causing the quantum dot film to form a dark band that is visible to the naked eye. This affects the displayable area of ​​the display, and the bezel used to cover the dark band also affects the overall appearance of the display.

[0004] As mentioned above, how to effectively design a display to achieve a "narrow bezel" appearance has become a technical bottleneck that ultra-narrow bezel displays urgently need to overcome. Summary of the Invention

[0005] In view of the above, and in response to the aforementioned technical problems, this application provides a backlight module, a display device, and a method for assembling the backlight module.

[0006] The first aspect of this application provides a backlight module, wherein the backlight module includes an assembly frame, a quantum dot film, and a barrier medium. The assembly frame has an assembly cavity, and the quantum dot film is disposed within the assembly cavity. The barrier medium is disposed within the assembly cavity and connects the peripheral side surface of the quantum dot film to the inner peripheral surface of the assembly cavity. The barrier medium includes at least one hydrophobic connecting portion, which is disposed on the peripheral side surface of the quantum dot film. The hydrophobic connecting portion is used to prevent external water vapor from entering the peripheral side surface of the quantum dot film.

[0007] Thus, by setting hydrophobic connectors, it is difficult for dark bands to appear in the quantum dot film. Therefore, the bezel structure in the display device (such as the aforementioned front bezel) does not need to add a blocking width corresponding to the dark band. The size of the bezel structure in the display device can be smaller, so that the display device can achieve a "narrow bezel" appearance and better meet the mainstream needs of the current consumer electronics market.

[0008] In some embodiments, the barrier medium has at least one hydrophilic connector, which is located on the side of the hydrophobic connector opposite to the quantum dot film.

[0009] In some embodiments, the hydrophobic connector is made of a mixture of polydimethylsiloxanes, and the hydrophilic connector is made of a mixture of hydroxyethyl methacrylates.

[0010] In some embodiments, the inner circumferential surface of the mounting frame is provided with a mounting groove, and at least a portion of the barrier medium is located within the mounting groove.

[0011] In some embodiments, the edges of the barrier medium and the quantum dot film are located within the mounting groove.

[0012] In some embodiments, a first portion of the barrier medium is filled between the sidewall of the mounting groove and the peripheral side of the quantum dot film, a second portion of the barrier medium is filled between the first surface of the quantum dot film and the top wall of the mounting groove, and a third portion of the barrier medium is filled between the second surface of the quantum dot film and the bottom wall of the mounting groove.

[0013] In some embodiments, the hydrophilic connection portion is disposed on the sidewall of the mounting groove, the first portion of the hydrophobic connection portion is filled between the sidewall of the mounting groove and the peripheral side of the quantum dot film, the second portion of the hydrophobic connection portion is filled between the first surface of the quantum dot film and the top wall of the mounting groove, and the third portion of the hydrophobic connection portion is filled between the second surface of the quantum dot film and the bottom wall of the mounting groove.

[0014] In some embodiments, the backlight module further includes a display panel, a brightness enhancement film, an optical film assembly, and a light source assembly. Along the thickness direction of the backlight module, the display panel, the quantum dot film, the brightness enhancement film, and the optical film assembly are sequentially arranged. The display panel covers the side of the mounting frame, and the brightness enhancement film and the optical film assembly are connected to the inner side of the mounting frame. The light source assembly is located on the side of the optical film assembly and emits light towards the optical film assembly. A predetermined isolation distance exists between the light source assembly and the optical film assembly to form a heat insulation layer between them.

[0015] In some embodiments, the mounting frame is a glass frame, and the display panel is welded to the side of the mounting frame.

[0016] A second aspect of this application provides a display device including a front frame, a rear frame, and a backlight module as described in the first aspect of this application. The front frame and the rear frame enclose a mounting space, and the backlight module is mounted in the mounting space.

[0017] Since the beneficial effects of the second aspect of the present application are derived from the first aspect of the present application, the main beneficial effects of the second aspect of the present application should be specifically referred to the beneficial effects of the first aspect of the present application, and will not be repeated here.

[0018] A third aspect of this application provides a method for assembling a backlight module, comprising: A liquid hydrophilic substrate is coated onto the sidewall of the mounting groove of the assembly frame; The hydrophilic substrate is subjected to UV pre-curing treatment to make the liquid hydrophilic substrate turn into a gel. A coupling agent is added to the surface of the hydrophilic substrate, and a liquid hydrophobic substrate is coated onto the surface of the hydrophilic substrate. The quantum dot film is pressed into the mounting groove of the assembly frame so that the hydrophobic substrate covers the ends of the quantum dots; The hydrophilic substrate and the hydrophobic substrate are cured to solidify the hydrophobic substrate and the hydrophilic substrate as a whole.

[0019] The third aspect of this application aims to provide an assembly method for the backlight module mentioned in the first aspect of this application, so as to improve the mass production efficiency and speed of the backlight module in the first aspect of this application, thereby improving the production speed and efficiency of the display device.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, embodiments of this application are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the assembly of a display device according to this application; Figure 2 for Figure 1 Structural diagram of the frame assembly in the middle; Figure 3 for Figure 1 A schematic diagram showing the connection between the frame and the quantum dot film in the assembly process; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the barrier medium. Figure 6 This is a schematic diagram of the assembly of another display device.

[0023] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0024] Reference numerals: 1000-Display device, 2000-External moisture, 100-Backlight module, 1-Assembly frame, 10-Assembly cavity, 11-Mounting groove, 12-Frame body, 2-Quantum dot film, 20-First surface, 21-Second surface, 3-Barrier medium, 30-Hydrophobic connection, 31-Hydrophilic connection, 32-First part, 33-Second part, 34-Third part, 35-Barrier layer, 4-Display panel, 6-Optical film assembly, 60-Light guide plate, 61-Diffuser plate, 62-Reflector, 63-Brightness enhancement film, 7-Light source assembly, 70-Mounting substrate, 71-Light-emitting body, 72-Supporting component, 8-Buffer connector, 200-Front frame, 300-Rear frame, 400-Mounting space; L1 - Display area, L2 - Isolation gap, X - Length direction, Z - Thickness direction. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “an,” “a,” or “the,” as used herein, do not indicate a limitation of quantity, but are merely used to indicate the presence of at least one. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] To facilitate understanding of the prior art solutions mentioned in this application, the relevant terms involved in the prior art will now be explained and described.

[0029] As the consumer electronics market continues to demand an ultimate visual experience, displays are evolving towards a "borderless" design, requiring the bezel area to be compressed to a width almost imperceptible to the naked eye. Quantum dot backlighting technology, due to its ability to significantly improve color gamut and luminous efficiency, has become the preferred solution for high-end TVs, laptops, and automotive displays. As a key component for enhancing color gamut and brightness, quantum dot (QD) backlight modules have been widely adopted in mid-to-high-end display products. Quantum dot backlight modules typically couple a polymer film containing red and green quantum dots (industry term "quantum dot film," QDF) with a blue LED light source, obtaining high-purity white light through wavelength conversion. Specifically, a conversion film containing red and green quantum dots is placed above the light guide plate or mini-LED array in the quantum dot backlight module, using blue backlight excitation to obtain high-purity white light.

[0030] However, quantum dot materials (such as cadmium selenide and indium phosphide nanoparticles in quantum dot films) are extremely sensitive to water and oxygen. In existing displays, the edges of the quantum dot film are constantly in contact with the external environment due to assembly gaps. This causes moisture from the external environment to gradually diffuse inward along the substrate interface of the quantum dot film, leading to oxidative degradation of the nanoparticles at the edges. This results in the oxidation of the quantum dot surface and the formation of dense "blackening" products (mainly SeO2 and In2O3), creating a visible dark band. To prevent this dark band from entering the visible area and affecting the display effect, manufacturers have to widen the front or middle bezel of the display to cover the area corresponding to the dark band. However, this directly affects the narrow bezel design of the display. Therefore, how to effectively suppress the darkening of the quantum dot film edges without affecting the "narrow bezel" appearance of the display has become a critical technical bottleneck that ultra-narrow bezel displays urgently need to overcome.

[0031] To address the aforementioned problems, this application provides a method such as Figure 1The display device shown includes a front frame, a rear frame, and a backlight module. The front frame and the rear frame enclose a mounting space 400, and the backlight module is mounted in the mounting space 400. The display device aims to achieve a "narrow bezel" appearance by improving the structural features of the backlight module, thereby making the display device more in line with the mainstream needs of the current consumer electronics market.

[0032] It should be noted that the aforementioned display devices may include, but are not limited to, televisions, computer monitors, tablets, laptops, etc.

[0033] To facilitate the reader's understanding of the technical solution, the following will be explained in conjunction with the embodiments of this application. Figures 1-6 The technical solutions in the embodiments of this application are clearly and completely described. The dimensions of the backlight module are schematically indicated in the figures, where X represents the length direction of the backlight module and Z represents the thickness direction. It should be noted that, to clearly and obviously demonstrate the various features to the reader, when multiple substantially identical structures appear in the figures, only one structure is schematically labeled to avoid interfering with the user's clear identification.

[0034] Please refer to this first. Figure 1 In some embodiments, the backlight module 100 includes a mounting frame 1, a quantum dot film 2, and a barrier medium 3. The mounting frame 1 has a mounting cavity 10, and the quantum dot film 2 is disposed within the mounting cavity 10. The barrier medium 3 is disposed within the mounting cavity 10 and connects the peripheral surface of the quantum dot film 2 to the inner peripheral surface of the mounting cavity 10. The barrier medium 3 includes at least one hydrophobic connector 30, which is disposed on the peripheral surface of the quantum dot film 2 and serves to prevent external water vapor 2000 from entering the peripheral surface of the quantum dot film 2.

[0035] Optionally, the mounting frame 1 includes multiple frame bodies 12.

[0036] In the above embodiments, the backlight module 100 provides a hydrophobic connection portion 30 on the peripheral side of the quantum dot film 2. Through the "water-repellent" property of the hydrophobic connection portion 30, the hydrophobic connection portion 30 can block external water vapor 2000 from moving to the peripheral side of the quantum dot film 2. That is, it prevents external water vapor from entering the peripheral side of the quantum dot film 2. External water vapor 2000 has difficulty touching the peripheral side of the quantum dot film 2 formed by the cutting process, and thus has difficulty touching the quantum dots exposed to the outside by the cutting process. This greatly reduces the probability of the quantum dots being oxidized, so that the quantum dot film 2 in this application is less likely to have dark bands, and the backlight module 100 can form a larger display area L1.

[0037] Thus, by providing the hydrophobic connection portion 30, the quantum dot film 2 is less likely to have dark bands, so the bezel structure in the display device 1000 (such as the aforementioned front frame 200) does not need to be additionally provided with a blocking width corresponding to the dark bands. The size of the bezel structure in the display device 1000 can be smaller, so that the display device 1000 can achieve a "narrow bezel" appearance, making the display device 1000 better meet the mainstream needs of the current consumer electronics market.

[0038] Optionally, the hydrophobic connection portion 30 is sealed to the peripheral side of the quantum dot film 2.

[0039] Optionally, the hydrophobic connection portion 30 is formed by curing a liquid colloid. That is, the hydrophobic connection portion 30 can not only prevent external water vapor 2000 from moving to the peripheral side of the quantum dot film 2, but also establish a connection between the quantum dot film 2 and the assembly frame 1, so that when the hydrophobic connection portion 30 is in a liquid state, the quantum dot film 2 can be adhered to the assembly frame 1.

[0040] The peripheral side of the quantum dot film 2 can be pressed into the hydrophobic connection portion 30 when it is in a liquid or gel state, so that the hydrophobic connection portion 30 can wrap the peripheral side of the quantum dot film 2, thereby improving the sealing performance of the hydrophobic connection portion 30 on the peripheral side of the quantum dot film 2, and further enhancing the effect of the hydrophobic connection portion 30 in blocking external water vapor 2000 from entering the peripheral side of the quantum dot film 2.

[0041] For reference Figures 3 to 5 In some embodiments, the barrier medium 3 includes at least one hydrophilic connector 31, which is disposed on the side of the hydrophobic connector 30 away from the quantum dot film 2.

[0042] It should be noted that, as Figure 5 As shown, Figure 5The direction of movement of external water vapor 2000 is schematically indicated in the diagram. A barrier layer 35 is formed at the junction of the hydrophilic connection 31 and the hydrophobic connection 30. This barrier layer 35 is used to block the flow of external water vapor 2000 between the hydrophilic connection 31 and the hydrophobic connection 30, thereby enabling the barrier medium 3 to block external water vapor 2000 from entering the peripheral surface of the quantum dot film 2. Due to the respective chemical properties of the hydrophilic connector 31 and the hydrophobic connector 30, the hydrophilic connector 31 can absorb external water vapor 2000 and distribute the moisture evenly, while the hydrophobic connector 30 can repel external water vapor 2000. Thus, at the barrier layer 35, the hydrophilic connector 31 and the hydrophobic connector 30 work synergistically. The hydrophilic connector 31 can absorb both external water vapor 2000 and the water vapor repelled by the hydrophobic connector 30, and evenly distribute the water vapor to all parts of the hydrophilic connector 31. This prevents the formation of local high pressure at the barrier layer 35, which would affect the structural stability of the barrier medium 3. In this way, the barrier medium 3's ability to block external water vapor 2000 is improved. The barrier medium 3 can further prevent external water vapor 2000 from entering the peripheral side of the quantum dot film 2, making it difficult for the quantum dot film 2 to form a dark band. Therefore, it helps the display device 1000 to form a "narrow bezel" appearance.

[0043] In some embodiments, the hydrophobic connecting portion 30 includes a hydrophobic group, and the hydrophilic connecting portion 31 includes a hydrophilic group. It should be noted that the hydrophilic group is like a "water-attracting magnet" in the molecule, typically a small, polar or ionizable unit such as -OH, -COOH, -NH2, -SO3H, or an ether bond. The hydrophilic group allows the material containing it to absorb moisture. The hydrophobic group is like a "waterproof raincoat" in the molecule, mainly non-polar alkyl groups such as -CH3 / -CH2-, fluoroalkyl groups such as -CF2-, and benzene rings, which only interact with water through weak van der Waals forces. The hydrophobic group allows the material containing it to push water droplets back, keeping the material dry.

[0044] In this way, external moisture 2000 will be trapped at the barrier layer 35, forming a capillary-like barrier effect. Thus, the barrier medium 3 can prevent external moisture 2000 from entering the peripheral side of the quantum dot film 2, making it difficult for the quantum dot film 2 to form a dark band. This helps the display device 1000 to form a "narrow bezel" appearance.

[0045] In some embodiments, the hydrophobic connector 30 is made of a mixture of polydimethylsiloxanes, and the hydrophilic connector 31 is made of a mixture of hydroxyethyl methacrylates.

[0046] The polydimethylsiloxane (PDMS) mixture has a main chain consisting entirely of -Si-O-Si- methyl groups with extremely low surface energy, allowing the hydrophobic connector 30 to act as a "waterproof valve," preventing the passage of external moisture 2000. The hydroxyethyl methacrylate (HEMA) mixture has -OH hydroxyl groups on its side chains, which can form hydrogen bonds with water. Thus, the hydrophilic connector 31 can first adsorb external moisture 2000, and then condense the adsorbed moisture 2000 at the barrier layer 35 into a thin, invisible water layer. This water layer adheres firmly to the material surface and micropores, neither rolling off nor evaporating immediately. External moisture 2000 is mainly located on the hydrophilic connector 31 side and has difficulty entering the hydrophobic connector 30. Therefore, the barrier medium 3 can prevent external moisture 2000 from entering the peripheral surface of the quantum dot film 2, making it difficult for the quantum dot film 2 to form a dark band, thereby contributing to the "narrow bezel" appearance of the display device 1000.

[0047] Please refer to Figure 2 and Figure 3 In some embodiments, the inner circumferential surface of the mounting frame 1 is provided with a mounting groove 11, and at least part of the barrier medium is located in the mounting groove 11. In this way, the mounting groove 11 can fix the setting position of the barrier medium 3, so that the barrier medium 3 can stably connect the peripheral side of the quantum dot film 2 in the mounting groove 11, thereby improving the stability of the overall structure of the backlight assembly.

[0048] Please continue to refer to this. Figure 2 and Figure 3 In some embodiments, the edges of the barrier medium and the quantum dot film 2 are located within the mounting groove 11. In this way, the edges of both the barrier medium and the quantum dot film 2 can be accommodated in the mounting groove 11. Even if the edge imaging effect of the quantum dot film 2 is not good, it will not affect the display effect of the "narrow bezel" appearance display device 1000.

[0049] Specifically, since the peripheral side of the quantum dot film 2 is the most easily oxidized area, if the quantum dot film 2 is not assembled in time after cutting, or if the sealing effect of the barrier medium 3 decreases after aging, a certain darkening band will form on the quantum dot film 2, affecting the display area L1 of the display device 1000. Based on this, the mounting groove 11 in this embodiment provides a certain accommodating space for the peripheral side of the quantum dot film 2, so that the peripheral side of the quantum dot film 2 can be housed in the mounting groove 11. In this way, the side of the quantum dot film 2 will not be exposed to the display area L1 of the display device 1000. Even if the peripheral side of the quantum dot film 2 is oxidized to form a darkening band during the use of the backlight module 100, the darkening band will not be exposed to the display area L1 due to the blocking effect of the sidewall of the mounting groove 11, and will not affect the display effect of the "narrow bezel" appearance display device 1000.

[0050] It should be noted that, since the barrier medium always maintains hydrophobic properties, even if the peripheral side of the quantum dot film 2 is oxidized to form a dark band, the hydrophobic connection portion 30 still has the ability to prevent external water vapor 2000 from entering the peripheral side of the quantum dot film 2. Therefore, the expansion rate of the dark band in the quantum dot film 2 will be significantly reduced, so as to effectively extend the service life of the backlight module 100, that is, effectively extend the service life of the display device 1000.

[0051] For reference Figure 3 and Figure 4 In some embodiments, the first portion 32 of the barrier medium 3 is filled between the sidewall of the mounting groove 11 and the peripheral sidewall of the quantum dot film 2, the second portion 33 of the barrier medium 3 is filled between the first surface 20 of the quantum dot film 2 and the top wall of the mounting groove 11, and the third portion 34 of the barrier medium 3 is filled between the second surface 21 of the quantum dot film 2 and the bottom wall of the mounting groove 11.

[0052] Thus, the barrier medium 3 can surround the peripheral side of the quantum dot film 2, and the barrier medium 3 can more effectively block external water vapor 2000 from entering the peripheral side of the quantum dot film 2, thereby reducing the probability that the peripheral side of the quantum dot film 2 will be oxidized and form a dark band, effectively improving the display effect of the display device 1000.

[0053] like Figure 4 As shown, in some embodiments, the hydrophilic connector 31 is disposed on the sidewall of the mounting groove 11, the first portion 32 of the hydrophobic connector 30 is filled between the sidewall of the mounting groove 11 and the peripheral side of the quantum dot film 2, the second portion 33 of the hydrophobic connector 30 is filled between the first surface 20 of the quantum dot film 2 and the top wall of the mounting groove 11, and the third portion 34 of the hydrophobic connector 30 is filled between the second surface 21 of the quantum dot film 2 and the bottom wall of the mounting groove 11.

[0054] Thus, the hydrophobic connection portion 30 can surround the peripheral side of the quantum dot film 2, and since the hydrophilic connection portion 31 is spaced apart from the peripheral side of the quantum dot film 2 by the hydrophobic connection portion 30, the barrier medium 3 can more effectively block external water vapor 2000 from entering the peripheral side of the quantum dot film 2, thereby reducing the probability that the peripheral side of the quantum dot film 2 will be oxidized and form a dark band, effectively improving the display effect of the display device 1000.

[0055] In some embodiments, the barrier medium 3 is a sandwich structure consisting of a hydrophobic layer, a hydrophilic layer, and a hydrophobic layer stacked in sequence. This allows the barrier medium 3 to more effectively block external water vapor 2000 from entering the peripheral surface of the quantum dot film 2, thereby reducing the probability of the peripheral surface of the quantum dot film 2 being oxidized and forming a dark band, and effectively improving the display effect of the display device 1000.

[0056] Please refer to Figure 6 In some embodiments, the backlight module 100 further includes a display panel 4, a brightness enhancement film 63, an optical film assembly 6, and a light source assembly 7. Along the thickness direction Z of the backlight module 100, the display panel 4, the quantum dot film 2, the brightness enhancement film 63, and the optical film assembly 6 are sequentially arranged. The display panel 4 covers the side of the mounting frame 1, and the brightness enhancement film 63 and the optical film assembly 6 are connected to the inner side of the mounting frame 1. The light source assembly 7 is located on the side of the optical film assembly 6 and emits light towards the optical film assembly 6. A predetermined isolation distance L2 exists between the light source assembly 7 and the optical film assembly 6 to form a heat insulation layer between them. This heat insulation layer hinders heat conduction between the light source assembly 7 and the optical film assembly 6 to prevent the optical film assembly 6 from warping and deforming due to heat, thereby affecting the structural stability of the backlight module 100.

[0057] It should be noted that the display panel 4 has a display area L1, within which the display device 1000 can display image information. The brightness enhancement film 63 is used to enhance the display brightness of the display device 1000, and the optical film assembly 6 is used to effectively transmit the light from the light source assembly 7 so that an image can ultimately be displayed on the display panel 4 for the user to view.

[0058] In the above embodiment, the light source component 7 emits light toward the optical film component 6, so that the light can be processed sequentially by the optical film component 6, the brightness enhancement film 63, and the quantum dot film 2 before moving to the display panel 4, so that the display panel 4 can form an image within the display area L1 for the user to view. Since the light source component 7 is located on the side of the optical film component 6, the light source component 7 does not occupy any space in the thickness direction Z of the display device 1000, so that the display device 1000 has a smaller size in the thickness direction Z, making the display device 1000 thinner and lighter, which meets the consumer demand for display devices 1000 in the consumer electronics market.

[0059] Optionally, the backlight module 100 may include a plurality of adjacent and stacked brightness enhancement films 63.

[0060] Optionally, the optical film assembly 6 includes a light guide plate 60 to uniformly transmit light.

[0061] Please return to the reference. Figure 1 In some embodiments, along the thickness direction Z of the display device 1000, the light source assembly 7 is located on the side of the optical film assembly 6 opposite to the brightness enhancement film 63. The light source assembly 7 includes a light-emitting body 71, a support member 72, and a mounting substrate 70. The light-emitting body 71 is electrically mounted on the mounting substrate 70. One side of the support member 72 is connected to the optical film assembly 6, and the other side is connected to the mounting substrate 70, so that the optical film assembly 6 and the mounting substrate 70 form a space between them. The optical film assembly 6 includes a diffuser plate 61, and the light-emitting body 71 emits light towards the diffuser plate 61 so that the light can be uniformly dispersed in the space. After being processed by the brightness enhancement film 63 and the quantum dot film 2 in sequence, the light moves to the display panel 4, so that the display panel 4 emits light uniformly within the display area L1, thereby improving the user experience.

[0062] Optionally, the optical film assembly 6 includes a reflector 62 to reduce light loss.

[0063] Please refer to Figure 6 In some embodiments, the mounting frame 1 is a glass frame, and the display panel 4 is welded to the side of the mounting frame 1. Thus, by utilizing the good welding compatibility between the display panel 4 and the glass, the display panel 4 can be stably connected to the mounting frame 1. In this way, no additional connection structure is required between the display panel 4 and the mounting frame 1, so that the display device 1000 has a smaller size in the thickness direction Z, making the display device 1000 thinner and lighter, which meets the growing consumer demand for display devices in the consumer electronics market.

[0064] Can be referenced Figure 1 In some embodiments, the backlight module 100 further includes a buffer connector 8, on which the mounting frame 1 and the display panel 4 are respectively bonded to opposite sides, so that the display panel 4 is stably connected to the mounting frame 1. In addition, since the buffer connector 8 is compressible, it can form a certain buffer space by compression, so that the display panel 4 and the mounting frame 1 are softly connected, thereby reducing the probability of the display panel 4 and the mounting frame 1 being damaged due to hard contact.

[0065] This application also provides a method for assembling a backlight module 100, the method comprising: S1: Coat the sidewall of the mounting groove 11 of the assembly frame 1 with a liquid hydrophilic substrate; S2: The hydrophilic substrate is subjected to UV pre-curing treatment to make the liquid hydrophilic substrate gel-like; S3: Add a coupling agent to the surface of the hydrophilic substrate and coat the surface of the hydrophilic substrate with a liquid hydrophobic substrate; S4: Press the quantum dot film 2 into the mounting groove 11 of the assembly frame 1 so that the hydrophobic substrate covers the end of the quantum dot film 2; S5: The hydrophilic substrate and the hydrophobic substrate are cured to solidify the hydrophobic substrate and the hydrophilic substrate as a whole.

[0066] This assembly method aims to provide a feasible method embodiment, thereby improving the mass production efficiency and speed of the backlight module 100 in this application, and further improving the production speed and efficiency of the display device 1000.

[0067] It is important to understand that this assembly method can be applied to automated production lines to be executed in conjunction with one or more devices.

[0068] Optionally, the quantum dot film 2 can be passively pressed into and fitted into the mounting groove 11 of the mounting frame 1 by the pressing action of the front frame 200 and the rear frame 300, so that the hydrophobic substrate covers the end of the quantum dot film 2, so that the hydrophobic substrate can physically connect the end of the quantum dot film 2 to the mounting frame 1, and can also prevent external water vapor 2000 from entering the peripheral side of the quantum dot film 2.

[0069] It should be noted that the descriptions of each embodiment in the above embodiments have different emphases. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0070] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for assembling a backlight module, characterized in that, The backlight module includes: An assembly frame is provided, wherein the assembly frame has an assembly cavity and an installation groove is provided on the inner circumferential surface of the assembly frame; A quantum dot film, wherein the quantum dot film is disposed within the assembly cavity; A barrier medium is disposed within the assembly cavity and connects the peripheral side surface of the quantum dot film to the inner peripheral surface of the assembly cavity. The edges of the barrier medium and the quantum dot film are located within the mounting groove. The barrier medium includes at least one hydrophobic connector and at least one hydrophilic connector. The hydrophobic connector is disposed on the peripheral side surface of the quantum dot film. The hydrophobic connector is used to block external water vapor from entering the peripheral side surface of the quantum dot film, and the hydrophilic connector is disposed on the side of the hydrophobic connector opposite to the quantum dot film. The mounting groove includes a groove sidewall, a groove top wall, and a groove bottom wall. The hydrophobic connection part includes a first part, a second part, and a third part. The hydrophilic connection part is disposed on the groove sidewall of the mounting groove. The first part fills the space between the groove sidewall and the peripheral side of the quantum dot film. The second part fills the space between the first surface of the quantum dot film and the groove top wall. The third part fills the space between the second surface of the quantum dot film and the groove bottom wall. The assembly method includes the following steps: A liquid hydrophilic substrate is coated onto the sidewall of the mounting groove of the assembly frame; The hydrophilic substrate is subjected to UV pre-curing treatment to make the liquid hydrophilic substrate turn into a gel. A coupling agent is added to the surface of the hydrophilic substrate, and a liquid hydrophobic substrate is coated onto the surface of the hydrophilic substrate. The quantum dot film is pressed into the mounting groove of the assembly frame so that the hydrophobic substrate covers the end of the quantum dot film; The hydrophilic substrate and the hydrophobic substrate are cured to solidify the hydrophobic substrate and the hydrophilic substrate as a whole.

2. The assembly method as described in claim 1, characterized in that, The hydrophobic connector is made of a mixture of polydimethylsiloxanes, and the hydrophilic connector is made of a mixture of hydroxyethyl methacrylates.

3. A display device, characterized in that, The device includes a front frame, a rear frame, and a backlight module assembled by the assembly method as described in any one of claims 1 or 2, wherein the front frame and the rear frame enclose a mounting space, and the backlight module is assembled in the mounting space.

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