Display module, liquid crystal display device and electronic terminal

Abstract

The utility model relates to the technical field of backlight modules, in particular to a display module, a liquid crystal display device and an electronic terminal. The display module comprises a back plate and a side wall arranged around the back plate, a containing groove is formed by the side wall and the back plate, and a backlight module is arranged in the containing groove; the backlight module comprises a lamp panel, a diffusion film and a blue light conversion membrane which are sequentially stacked, the lamp panel is connected with the back plate, and a gap is formed between the side wall and the backlight module; the end, close to the side wall, of the blue light conversion membrane is provided with an extending part, the extending part is arranged in the gap, and the extending part is bent towards the back plate and abuts against the lamp panel. The display module provided by the embodiment of the utility model solves the problem that the periphery of the display screen is blued; dark display around the display screen can be prevented.

Description

Technical Field

[0001] This patent relates to the field of backlight module technology, and in particular to a display module, a liquid crystal display device, and an electronic terminal. Background Art

[0002] With the development of the display industry, the market has higher and higher requirements for display brightness, response speed, high contrast and high color gamut. Therefore, Mini-LED display products that meet these conditions have emerged, arousing strong market demand.

[0003] In the backlight module of a traditional Mini-LED display, a blue LED is soldered to the light board. When powered, the blue LED emits blue light. This light passes through a diffuser film and then through a quantum dot film, which converts the blue light into white light. This white light then passes through a spectrometer film and a brightness-enhancing film to provide the display's surface light source. Due to the assembly gap between the film materials and the backlight frame, some blue light misses the quantum dot film and enters the gap. After multiple reflections, this blue light enters the display area, causing a bluish tint or dimming around the edges of the display. Summary of the Invention

[0004] This patent provides a display module, a liquid crystal display device and an electronic terminal to at least solve the above technical problems existing in the prior art.

[0005] The first aspect of this patent provides a display module, comprising: a back plate and a side wall arranged around the back plate, wherein the side wall and the back plate form a receiving groove, and the receiving groove is provided with a backlight module;

[0006] The backlight module includes a light board, a diffusion film and a blue light conversion film stacked in sequence, the light board is connected to the backboard, and a gap is provided between the side wall and the backlight module;

[0007] The end of the blue light conversion film close to the side wall is provided with an extension portion, the extension portion is arranged in the gap, the extension portion is bent toward the back plate and abuts against the light board.

[0008] Furthermore, the extension portion is U-shaped or C-shaped.

[0009] Furthermore, the receiving groove is provided with a plastic frame, the plastic frame is connected to the side wall, and the top of the plastic frame is provided with a plastic frame retaining wall;

[0010] A light-shielding tape is provided on the top of the plastic frame retaining wall, and at least a portion of the light-shielding tape is provided above the backlight module.

[0011] Furthermore, the backlight module further comprises a multi-layer spectroscopy film, wherein the multi-layer spectroscopy film is stacked, and the multi-layer spectroscopy film is stacked with the blue light conversion film.

[0012] Furthermore, the backlight module further comprises a composite brightness enhancement film, and the composite brightness enhancement film and the multi-layered beam splitting film are stacked.

[0013] Furthermore, the light board includes an FPC circuit board and an LED chip, and the LED chip is arranged on the FPC circuit board.

[0014] Furthermore, the blue light conversion film is a quantum dot film structure.

[0015] A second aspect of the present disclosure provides a liquid crystal display device, comprising an LCD display screen, wherein the display module as described in the first aspect is arranged below the LCD display screen.

[0016] Furthermore, the liquid crystal display device is also provided with a blue LED light source.

[0017] A third aspect of the present disclosure provides an electronic terminal, which is provided with the display module as described in the second aspect.

[0018] The technical solution provided by this patent embodiment has the following advantages compared with the existing technology:

[0019] The display module provided by the embodiment of the present patent includes a back panel and side walls arranged around the back panel, the side walls and the back panel forming a receiving groove, and the receiving groove is provided with a backlight module; the backlight module includes a light board, a diffusion film and a blue light conversion film stacked in sequence, the light board is connected to the back panel, and a gap is provided between the side wall and the backlight module; the blue light conversion film is provided with an extension at the end near the side wall, the extension is arranged in the gap, the extension is bent toward the back panel and abuts the light board. In the display module provided by the embodiment of the present patent, on the one hand, the extension of the blue light conversion film prevents blue light from the area around the backlight from entering the gap between the side wall and the backlight module, preventing blue light from entering the display area, thereby solving the problem of blue light around the display screen; on the other hand, the extension of the blue light conversion film recycles the blue light that enters the area around the backlight module, making the blue light conversion rate higher, improving the utilization rate of the surrounding LED light sources, and preventing the problem of dark display around the display screen.

[0020] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of this patent, nor is it intended to limit the scope of this patent. Other features of this patent will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, in which:

[0022] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0023] Figure 1 A schematic diagram of the structure of the display module provided by an embodiment of this patent is shown.

[0024] Explanation of the numbers in the figure: 1. Back panel; 2. Side wall; 3. Light board; 4. Diffusion film; 5. Blue light conversion film; 51. Extension; 6. Gap; 7. Glue frame; 8. Glue frame retaining wall; 9. Shading tape; 10. Beam splitting film; 11. Brightness enhancement film; 12. Fixing glue. DETAILED DESCRIPTION

[0025] To make the purpose, features, and advantages of this patent more obvious and easy to understand, the technical solutions in the embodiments of this patent will be clearly and completely described below in conjunction with the drawings in the embodiments of this patent. Obviously, the embodiments described are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this patent.

[0026] like Figure 1 As shown, the display module provided by the embodiment of the present invention includes a back panel 1 and a side wall 2 arranged around the back panel 1 to support the backlight module. The side panel and the back panel 1 can be connected by snapping or bonding. Optionally, the side panel and the back panel 1 are connected by fixing glue 12.

[0027] Optionally, the back panel 1 may be a metal frame, a plastic frame or a rubber frame 7, which may vary depending on the specific applicable terminal device.

[0028] The sidewalls 2 and back panel 1 form a receiving groove, which houses the backlight module. The backlight module comprises a stacked light panel 3, a diffuser film 4, and a blue light conversion film 5. The diffuser film 4 diffuses and atomizes the light emitted by the light panel 3. The dichroic film 10 also evens out the light distribution, converting point or line light sources into a uniform surface light source. This high light penetration improves viewing angles, softens the light source, and enhances optical efficiency, while also functioning as a diffuser and protecting the brightness enhancement film 11.

[0029] Optionally, the light board 3, the diffusion film 4 and the blue light conversion film 5 are bonded in sequence. The light board 3 is connected to the backboard 1. Optionally, the light board 3 is bonded to the backboard 1. Optionally, the light board 3 and the backboard 1 can be connected by fixing glue 12.

[0030] A gap 6 is provided between the side wall 2 and the backlight module, which can provide sufficient space to ensure that the backlight module expands and deforms due to heat, so that the expansion and deformation of the backlight module due to heat will not affect the display effect of the display module. Among them, the blue light conversion film 5 is provided with an extension portion 51 at the end close to the side wall 2. The extension portion 51 is set in the gap 6. The extension portion 51 is bent toward the back panel 1 and abuts against the light board 3. On the one hand, the extension portion 51 of the blue light conversion film 5 prevents the blue light in the area around the backlight from entering the gap 6 between the side wall 2 and the backlight module, preventing the blue light from entering the display area, solving the problem of blue light around the display screen; on the other hand, the extension portion 51 of the blue light conversion film 5 recycles the blue light entering the area around the backlight module, making the blue light conversion rate higher, improving the utilization rate of the surrounding LED light sources, and preventing the problem of dark display around the display screen.

[0031] In some specific embodiments, the extension portion 51 is U-shaped or C-shaped. On the one hand, the U-shaped or C-shaped extension portion 51 prevents blue light from the area surrounding the backlight from entering the gap 6 between the side wall 2 and the backlight module, thereby preventing blue light from entering the display area and solving the problem of blue light around the display screen. On the other hand, the U-shaped or C-shaped extension portion 51 recycles the blue light that enters the area around the backlight module, thereby increasing the blue light conversion rate, improving the utilization rate of the surrounding LED light sources, and preventing the problem of dark display around the display screen.

[0032] In some specific embodiments, the receiving groove is provided with a plastic frame 7, which is connected to the side wall 2. Optionally, the plastic frame 7 and the side wall 2 are connected by fixing glue 12. A plastic frame retaining wall 8 is provided on the top of the plastic frame 7. Optionally, the plastic frame 7 and the plastic frame retaining wall 8 are connected by fixing glue 12. A light-shielding tape 9 is provided on the top of the plastic frame retaining wall 8. Optionally, the plastic frame retaining wall 8 and the light-shielding tape 9 are connected by fixing glue 12. At least a portion of the light-shielding tape 9 is provided above the backlight module. The light-shielding tape 9 is used to block light from the edge of the backlight module and can be a black PET film layer structure.

[0033] In some specific embodiments, the backlight module further includes a multi-layered bezel 10, which is stacked and stacked with the blue light conversion film 5. The bezel 10 is used to disperse light, thereby achieving a uniform effect. Depending on actual needs, the bezel 10 can be multi-layered to improve light utilization and enhance brightness.

[0034] In some specific embodiments, the backlight module further includes a composite brightness enhancement film 11, which is stacked with the multi-layered beam splitter film 10. The brightness enhancement film 11 can enhance the brightness of the backlight surface.

[0035] In some specific embodiments, the light board 3 includes an FPC circuit board and an LED chip, wherein the LED chip is disposed on the FPC circuit board. The FPC circuit board is connected to the main board, and the LED chip is connected to the FPC circuit board. Optionally, the LED chips can be arranged in an array to provide a uniform light source.

[0036] Specifically, the LED chips can be Mini LED blue light chips, and the Mini LED blue light chips are arranged in an array. The Mini LED blue light chips emit blue light, and the Mini LED light board 3 is covered with a quantum dot film blue light conversion film 5. The blue light emitted by the Mini LED blue light chips on the Mini LED light board 3 and the blue light conversion film 5 form a white light source. The Mini LED blue light chips are arranged in an array, which can provide a uniform light source.

[0037] In some specific embodiments, the blue light conversion film 5 is a quantum dot film structure. Quantum dot films are novel nanomaterial functional films with unique optical properties that can accurately and efficiently convert blue light into vivid red and bright green light. By finely adjusting the backlight, the color gamut of the LCD display is significantly improved.

[0038] The liquid crystal display device provided in the embodiments of the present disclosure includes an LCD display screen, and a display module provided in the embodiments of the present disclosure is disposed below the LCD display screen. The liquid crystal display device can be an LCD television, a mobile phone, a personal digital assistant (PDA), a digital camera, a computer screen, or a laptop screen.

[0039] In some specific embodiments, the liquid crystal display device is further provided with a blue LED light source. Optionally, the blue LED light source can be a Mini-LED light board 3.

[0040] The electronic terminal provided in the embodiment of the present disclosure is provided with a display module as provided in the embodiment of the present disclosure. Since the electronic terminal provided in the embodiment of the present disclosure and the display module provided in the embodiment of the present disclosure have the same advantages, they will not be described in detail here.

[0041] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this patent can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this patent can be achieved. This is not limited herein.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this patent, "plurality" means two or more, unless otherwise specifically defined.

[0043] The above are only specific embodiments of this patent, but the scope of protection disclosed by this patent is not limited to these. Any changes or substitutions that can be easily conceived by any person skilled in the art within the technical scope disclosed by this patent should be covered by the scope of protection of this patent. Therefore, the scope of protection of this patent should be based on the scope of protection of the claims.

Claims

1. A display module, characterized in that: include: A back plate (1) and a side wall (2) arranged around the back plate (1), the side wall (2) and the back plate (1) forming a receiving groove, and a backlight module is provided in the receiving groove; The backlight module comprises a light board (3), a diffusion film (4) and a blue light conversion film (5) stacked in sequence, the light board (3) is connected to the backboard (1), and a gap (6) is provided between the side wall (2) and the backlight module; The blue light conversion film (5) is provided with an extension portion (51) at the end portion close to the side wall (2), the extension portion (51) is arranged in the gap (6), and the extension portion (51) is bent toward the back plate (1) and abuts against the light board (3).

2. The display module according to claim 1, wherein: The extension portion (51) is U-shaped or C-shaped.

3. The display module according to claim 1, wherein: The receiving groove is provided with a plastic frame (7), the plastic frame (7) is connected to the side wall (2), and the top of the plastic frame (7) is provided with a plastic frame retaining wall (8); A light-shielding tape (9) is provided on the top of the plastic frame retaining wall (8), and at least a portion of the light-shielding tape (9) is provided above the backlight module.

4. The display module according to claim 1, wherein: The backlight module further comprises a multi-layered spectroscopy film (10), wherein the multi-layered spectroscopy film (10) is stacked, and the multi-layered spectroscopy film (10) and the blue light conversion film (5) are stacked.

5. The display module according to claim 4, wherein: The backlight module further comprises a composite brightness enhancement film (11), and the composite brightness enhancement film (11) is stacked with the multi-layered beam splitting film (10).

6. The display module according to claim 1, wherein: The lamp board (3) comprises an FPC circuit board and an LED chip, and the LED chip is arranged on the FPC circuit board.

7. The display module according to claim 1, wherein: The blue light conversion film (5) is a quantum dot film structure.

8. A liquid crystal display device, comprising an LCD display screen, characterized in that: A display module according to any one of claims 1 to 7 is arranged below the LCD display screen.

9. The liquid crystal display device according to claim 8, wherein The liquid crystal display device is also provided with a blue LED light source.

10. An electronic terminal, characterized in that: The electronic terminal is provided with a display module as described in any one of claims 1-7.

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