Liquid crystal display module

Abstract

The application relates to the technical field of liquid crystal display, in particular to a liquid crystal display module, which comprises an outer frame, a light-reflecting plate is mounted below the inner part of the outer frame, a light guide plate is attached and mounted on the upper end of the light-reflecting plate, an LED lamp strip is fixedly mounted on the side of one end of the light guide plate, a diffusion film is attached and mounted on the upper surface of the light guide plate, a prism film is attached and mounted on the upper surface of the diffusion film, a light-enhancing film is attached and mounted on the upper surface of the prism film, a second polarizing plate is attached and mounted on the upper surface of the light-enhancing film, a liquid crystal layer is attached and mounted above the second polarizing plate, and a quantum dot layer is attached and mounted above the liquid crystal layer. The light guide plate micro-prism and aerogel filling are used to optimize the light path, reduce the escape and improve the heat dissipation, the uniform light emission and energy recovery are realized by combining the multilayer optical film, the heat dissipation system is fused with the honeycomb aluminum, the heat dissipation fin, the phase change micro-channel and the aluminum nitride column, a multistage heat conduction and electrostatic protection closed loop are formed, and the heat dissipation effect of the liquid crystal display module is remarkably enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display, and in particular to a liquid crystal display module. Background Art

[0002] A liquid crystal display module (LCD module) is a complete display system that integrates an LCD panel with backlighting, driver circuits, and control chips. It converts electrical signals into visual images. Its core component, the LCD panel, consists of liquid crystal material sandwiched between two glass substrates. Voltage applied by electrodes controls the deflection of liquid crystal molecules, allowing for selective light transmission and color filters to achieve color display. By integrating the panel with peripheral circuits, the module implements functions such as signal processing and backlight control, and is widely used in mobile phones, televisions, and automotive displays.

[0003] However, during long periods of uninterrupted operation, the internal electronic components of LCD modules, such as backlights and driver chips, continue to operate at high speeds, generating a constant stream of heat. If the heat dissipation pathways are blocked, heat will slowly accumulate within the relatively enclosed module. As the screen brightness is increased and the power is increased, the accumulated heat becomes more pronounced, causing the screen temperature to soar. This not only causes users to feel uncomfortable and scalding when touching the screen, but also accelerates the aging of components within the LCD module, such as liquid crystal molecules and circuit board solder joints, severely affecting the display quality, significantly shortening the module's overall service life, and potentially even posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a liquid crystal display module.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A liquid crystal display module comprises an outer frame, a socket is installed on one side of the outer frame, a reflector is installed on the lower inside of the outer frame, a light guide plate is laminated and installed on the upper end of the reflector, an LED light strip is fixedly installed on the side of one end of the light guide plate, a diffusion film is laminated and installed on the upper surface of the light guide plate, a prism film is laminated and installed on the upper surface of the diffusion film, a light-enhancing film is laminated and installed on the upper surface of the prism film, a second polarizing plate is laminated and installed on the upper surface of the light-enhancing film, a liquid crystal layer is laminated and installed above the second polarizing plate, a quantum dot layer is laminated and installed above the liquid crystal layer, a color filter is laminated and installed on the upper surface of the quantum dot layer, a first polarizing plate is laminated and installed on the upper surface of the color filter, and a protective film is laminated and installed on the upper surface of the first polarizing plate.

[0007] Preferably, a plurality of V-shaped grooves are etched on the upper surface of the reflector at equal intervals, and a micro-prism structure is etched on the lower surface of the light guide plate, and the gap formed by the micro-prism and the reflector is filled with aerogel.

[0008] Preferably, the light transmittance of the aerogel is not less than 97%.

[0009] Preferably, a plurality of heat dissipation fins are fixedly mounted at equal intervals on one end of the LED light strip away from the light guide plate.

[0010] Preferably, a microchannel is provided inside the second polarizing plate, the microchannel is filled with a cooling liquid, and the microchannel is arranged between the plurality of light outlets.

[0011] Preferably, the liquid crystal layer is filled with low birefringence fluorinated liquid crystal.

[0012] Preferably, a plurality of aluminum nitride columns are evenly distributed between the second polarizing plate and the liquid crystal layer, and the aluminum nitride columns form an air layer in the gap between the second polarizing plate and the liquid crystal layer.

[0013] Preferably, the quantum dot layer is a CdSe / ZnS quantum dot layer.

[0014] Preferably, a plurality of metal guide wires are uniformly passed through the interior of the first polarizing plate, and a conductive interface is installed on one side of the outer wall of the outer frame, and the conductive interface is connected to the metal guide wires.

[0015] Preferably, honeycomb aluminum is provided around the inner periphery of the outer frame.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. This application utilizes LED light sources on the side of the light guide plate combined with micro-prismatic surface etching technology to effectively suppress downward light dispersion, improve upward light output efficiency, and reduce reliance on reflectors. Aerogel filling the gaps in the micro-prismatic surface not only maintains high light transmittance, but also enhances heat dissipation and improves bonding. The three-layer structure of the diffusion film, prismatic film, and brightening film works synergistically to convert dot-matrix light into a uniform surface light source and correct the direction of the light path. The brightening film recycles intercepted light through polarized reflection, significantly improving light energy utilization.

[0018] 2. This application's heat dissipation system utilizes a multi-stage collaborative approach: Honeycomb aluminum combines high thermal conductivity with energy absorption properties to aid heat dissipation while buffering mechanical shock and reducing light leakage. Heat dissipation fins directly contact the heat source and work in conjunction with the honeycomb aluminum to dissipate heat. Microchannels within the second polarizer utilize a phase-change coolant cycle for dynamic heat dissipation, while aluminum nitride columns enhance air layer heat dissipation and static charge dissipation. A metal wire network within the first polarizer further enhances heat dissipation and static charge protection.

[0019] 3. The quantum dot layer in this application precisely controls the ratio of the three primary colors through blue light excitation, significantly improving color gamut coverage and color purity. The low-birefringence fluorinated liquid crystal effectively suppresses blue light phase delay, ensuring the polarization stability of the quantum dot excitation light. The high light efficiency of the LED blue light source reduces heat generation at the source, and combined with the energy recovery mechanism of the multilayer optical film, it optimizes the light-to-heat conversion efficiency. The synergistic effect of the color filter and polarization component ultimately outputs high-quality images, improving display quality while systematically reducing overall energy consumption.

[0020] To summarize, this application optimizes the optical path through light guide plate microprisms and aerogel filling, reduces escape and improves heat dissipation, combines multi-layer optical films to achieve uniform light output and energy recovery, and the heat dissipation system integrates honeycomb aluminum, heat dissipation fins, phase change microchannels and aluminum nitride columns to form a multi-level thermal conduction and electrostatic protection closed loop, which significantly enhances the heat dissipation effect of the liquid crystal display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall axonometric structure of a liquid crystal display module proposed in the present invention.

[0022] Figure 2 This is a schematic diagram of the reflector and aerogel structure of a liquid crystal display module proposed by the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a light guide plate of a liquid crystal display module proposed by the present invention.

[0024] Figure 4 for Figure 2 A magnified schematic diagram of the structure in the middle.

[0025] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0026] Figure 6 This is a schematic diagram of the first polarizing plate and metal guide wire structure of a liquid crystal display module proposed by the present invention.

[0027] Figure 7 This is a schematic diagram of the LED light strip and heat dissipation fin structure of a liquid crystal display module proposed by the present invention.

[0028] Figure 8 This is a schematic structural diagram of the outer frame and the second polarizing plate of a liquid crystal display module proposed by the present invention.

[0029] Figure 9 This is a schematic diagram of a half-section structure of a second polarizing plate of a liquid crystal display module proposed by the present invention.

[0030] In the figure: 1 outer frame, 2 socket, 3 conductive interface, 4 protective film, 5 first polarizing plate, 6 metal guide wire, 7 color filter, 8 quantum dot layer, 9 liquid crystal layer, 10 second polarizing plate, 11 aluminum nitride column, 12 light-reflecting plate, 13 V-shaped groove, 14 aerogel, 15 light guide plate, 16 micro-prism surface, 17 LED light strip, 18 heat dissipation fin, 19 diffusion film, 20 prism film, 21 light enhancement film, 22 honeycomb aluminum, 23 micro-channel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0032] Reference Figures 1 to 9 A liquid crystal display module includes an outer frame 1, the outer frame 1 is provided with a socket 2 on one side, the outer frame 1 is provided with a protective film 4 on the upper end surface, the light-reflecting plate 12 is installed inside the lower part of the outer frame 1, a plurality of V-shaped grooves 13 are etched on the upper end surface of the light-reflecting plate 12 at equal intervals, the V-shaped grooves 13 can improve the reflection efficiency of incident light in different directions, and can induce air micro-turbulence to improve the convective heat transfer coefficient, thereby improving the heat dissipation effect, the light guide plate 15 is installed on the upper end of the light-reflecting plate 12, the lower surface of the light guide plate 15 is etched to form a micro-prism surface 16 structure, the gap formed by the micro-prism surface 16 and the light-reflecting plate 12 is filled with aerogel 14, in order to ensure good light transmission, the higher the light transmittance of the aerogel 14, the better, which should be not less than 97%, the aerogel 14 can not only greatly improve the heat transfer of the light guide plate 15, but also can fill the gap of the etched micro-prism surface 16, so that the light-reflecting plate 12 can be more closely attached to it, improving the efficiency of light reflection.

[0033] The light guide plate 15 is fixedly installed with an LED light strip 17 on one side, the LED light strip 17 serves as a light source, the light emitted by the LED light strip 17 is reflected inside the light guide plate 15 to form a point array light source in the upward direction, a plurality of heat dissipation fins 18 are fixedly installed on the end of the LED light strip 17 away from the light guide plate 15 at equal intervals, and the heat dissipation fins 18 are used for dissipating heat generated by the LED light strip 17 during operation.

[0034] The upper surface of the light guide plate 15 is attached with a diffusion film 19, which is used to convert the dot matrix light source of the light guide plate 15 into a uniform surface light source. After the light passes through the diffusion film 19, it will spread in all directions. In order to correct the propagation direction, a prism film 20 is attached to the upper surface of the diffusion film 19. The prism film 20 reflects and refracts the light to make the direction of the light vertically upward. The upper surface of the prism film 20 is attached with a light enhancement film 21. The upper surface of the light enhancement film 21 is attached with a second polarizing plate 10. The light enhancement film 21 is used to recycle the light intercepted by the second polarizing plate 10 and reflect the light with a polarization direction inconsistent with the second polarizing plate 10 back. After passing through the prism film 20, the light is reflected again for utilization, improving the utilization rate of the light.

[0035] The second polarizing plate 10 is internally provided with microchannels 23 filled with cooling liquid. The microchannels 23 are arranged between multiple light outlets to avoid blocking the light path, as shown in the accompanying drawings. Figure 9 Due to the higher temperature in the middle of the second polarizing plate 10 and the lower temperature on both sides, the cooling liquid is vaporized in the middle of the microchannels 23 and moves to both sides. After cooling on both sides of the microchannels 23, the cooling liquid is liquefied again and then returns to the middle of the microchannels 23 to absorb heat from the middle of the second polarizing plate 10. This cycle is repeated to fully cool the second polarizing plate 10 and make the temperature of each point more uniform.

[0036] The second polarizing plate 10 is attached with a liquid crystal layer 9 filled with low birefringence fluorinated liquid crystal. Multiple aluminum nitride columns 11 are uniformly distributed between the second polarizing plate 10 and the liquid crystal layer 9. The aluminum nitride columns 11 do not block the light path and form an air layer between the second polarizing plate 10 and the liquid crystal layer 9 under the action of the aluminum nitride columns 11, further improving the heat dissipation effect of the second polarizing plate 10. The aluminum nitride columns 11 have a certain buffering capacity, which protects the internal parts. The aluminum nitride columns 11 can also assist in guiding internal static electricity, providing a certain static protection effect.

[0037] The upper surface of the liquid crystal layer 9 is attached with a quantum dot layer 8, which is a CdSe / ZnS quantum dot layer. The quantum dot layer 8 cooperates with the blue light emitted by the LED light strip 17 and the liquid crystal layer 9. The upper surface of the quantum dot layer 8 is attached with a color filter 7. The upper surface of the color filter 7 is attached with a first polarizing plate 5. The upper surface of the first polarizing plate 5 is attached with a protective film 4. Multiple metal wires 6 are uniformly arranged in the first polarizing plate 5. The metal wires 6 do not block the light path and assist in guiding the heat and static electricity in the first polarizing plate 5, improving the structural strength and providing better protection. A conductive interface 3 is installed on one side of the outer frame 1 to guide the static electricity on the outer frame 1.

[0038] Honeycomb aluminum 22 is provided all around the inside of the outer frame 1. Since the honeycomb aluminum 22 has good conductivity and absorption capacity, it can not only improve the safety performance of the entire device, but also help to guide away static electricity inside the device, playing an electrostatic protection effect. At the same time, it can also reduce light leakage from the side through reflection, improve the display effect and help guide away heat inside the device.

[0039] When the present invention is in use, the LED light strip 17 is used as a light source on the side of the light guide plate 15. The emitted light enters the light guide plate 15 and is reflected inside the light guide plate 15 to form a dot matrix light source pointing upward. Since there is some light reflected downward, a micro-prism surface 16 is etched at the bottom of the light guide plate 15. The micro-prism surface 16 can reduce the amount of light escaping downward through total reflection, allowing more light to be directly directed upward, reducing dependence on the reflective plate 12. At the same time, aerogel 14 is filled in the gap between the micro-prism surface 16 and the reflective plate 12. The light transmittance of the aerogel 14 is 97%-99%, and the light transmission effect is good. Without affecting the light transmission effect, it can not only greatly improve the heat transfer of the light guide plate 15, but also fill the gap of the etched micro-prism surface 16, so that the reflective plate 12 can fit more closely with it, thereby improving the reflection efficiency.

[0040] The upper surface of the reflector 12 is etched with a V-shaped groove 13, which can improve the reflection efficiency of incident light from different directions, and can induce air micro-turbulence, thereby increasing the convective heat transfer coefficient and improving the heat dissipation effect.

[0041] Honeycomb aluminum 22 is added to the interior of the outer frame 1. Honeycomb aluminum 22 has good electrical conductivity and energy absorption properties. It can not only improve the safety performance of the device and provide buffering protection when it is impacted by the outside world, but also help to conduct internal static electricity, reduce side light leakage to enhance the display effect, and assist in heat dissipation.

[0042] The back of the LED light strip 17 is provided with heat dissipation fins 18, which can promptly conduct away the heat generated by the light emission of the LED light strip.

[0043] The diffusion film 19 can transform the point matrix light source of the light guide plate 15 into a uniform surface light source. After passing through the diffusion film 19, the light will propagate in all directions. In order to correct the propagation direction, a prism film 20 is added to make the direction of the light vertically upward through reflection and refraction. In order to recover the light intercepted by the second polarizing plate 10, a brightness enhancement film 21 is added. The brightness enhancement film 21 can reflect back the light whose polarization direction is inconsistent with that of the second polarizing plate 10, and then reflect and utilize it after passing through the prism film 20 below, thereby improving the utilization rate of light.

[0044] When light passes through the backlight module (reflector 12, light guide plate 15, micro prism surface 16, LED light strip 17, diffusion film 19, prism film 20, and brightness enhancement film 21) and contacts the liquid crystal module (first polarizing plate 5, color filter 7, quantum dot layer 8, and liquid crystal layer 9), the light with the correct direction first passes through the second polarizing plate 10. The second polarizing plate 10 has a micro channel 23 inside, and the micro channel 23 is filled with coolant. Since the temperature in the middle of the second polarizing plate 10 is higher and the temperature on both sides is lower, the coolant is vaporized in the middle and moves to both sides. The aluminum nitride column 11 is provided in the vacant position of the second polarizing plate 10. Since the second polarizing plate 10 is in contact with the backlight module below, the heat dissipation requirement is higher. Therefore, the aluminum nitride column 11 forms an air layer in the gap between the second polarizing plate 10 and the liquid crystal layer 9 to improve the heat dissipation effect. The aluminum nitride column 11 has a certain buffering capacity, which has a certain protective effect on the internal parts. Moreover, the aluminum nitride column can help to conduct away the internal static electricity, and has a certain electrostatic protection effect.

[0045] Liquid crystal layer 9 is filled with low-birefringence fluorinated liquid crystals. A quantum dot layer 8 (CdSe / ZnS quantum dot layer) is mounted above liquid crystal layer 9. Combined with the blue light emitted by LED strip 17, these three elements produce the following synergistic effects: First, when blue light passes through quantum dot layer 8, it excites the CdSe / ZnS quantum dots to emit red (620nm) and green (530nm) light, which mixes with the transmitted blue light (450nm) to form white light. The quantum dots enhance color purity, improve color gamut coverage, and enhance the display quality. Second, the low-birefringence fluorinated liquid crystals reduce the blue light's phase lag, preventing polarization distortion in the quantum dot-excited light. Finally, because the blue light emitted by the LED strip has a relatively high luminous efficiency, a higher proportion of it is converted into light energy and a lower proportion into heat energy, reducing internal heat generation. Finally, the blue light passes through color filter 7, first polarizer 5, and protective film 4 to form an image.

[0046] The first polarizing plate 5 has a relatively low heat dissipation requirement, and is mainly interspersed with metal guide wires 6 inside. The metal guide wires 6 can mainly assist in conducting away the internal heat and static electricity, thereby improving the structural strength and achieving a better protective effect.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A liquid crystal display module, comprising an outer frame (1), wherein a socket (2) is installed on one side of the outer frame (1), characterized in that: A reflector (12) is mounted on the lower interior of the outer frame (1), a light guide plate (15) is mounted on the upper end of the reflector (12), an LED light strip (17) is fixedly mounted on the side of one end of the light guide plate (15), a diffusion film (19) is mounted on the upper surface of the light guide plate (15), a prism film (20) is mounted on the upper surface of the diffusion film (19), a light-enhancing film (21) is mounted on the upper surface of the prism film (20), a second polarizing plate (10) is mounted on the upper surface of the light-enhancing film (21), a liquid crystal layer (9) is mounted on the upper surface of the second polarizing plate (10), a quantum dot layer (8) is mounted on the upper surface of the liquid crystal layer (9), a color filter (7) is mounted on the upper surface of the quantum dot layer (8), a first polarizing plate (5) is mounted on the upper surface of the color filter (7), and a protective film (4) is mounted on the upper surface of the first polarizing plate (5); The upper surface of the reflective plate (12) is etched with a plurality of V-shaped grooves (13) at equal intervals, and the lower surface of the light guide plate (15) is etched to form a micro-prism surface (16) structural design, and the gap formed by the micro-prism surface (16) and the reflective plate (12) is filled with aerogel (14); The light transmittance of the aerogel (14) is not less than 97%.

2. The liquid crystal display module according to claim 1, wherein: A plurality of heat dissipation fins (18) are fixedly mounted at equal intervals on one end of the LED light strip (17) away from the light guide plate (15).

3. The liquid crystal display module according to claim 1, wherein: A microchannel (23) is provided inside the second polarizing plate (10), the microchannel (23) is filled with cooling liquid, and the microchannel (23) is arranged between the plurality of light outlets.

4. The liquid crystal display module according to claim 1, wherein: The liquid crystal layer (9) is filled with low birefringence fluorinated liquid crystal.

5. The liquid crystal display module according to claim 4, wherein: A plurality of aluminum nitride columns (11) are evenly distributed between the second polarizing plate (10) and the liquid crystal layer (9), and the aluminum nitride columns (11) form an air layer in the gap between the second polarizing plate (10) and the liquid crystal layer (9).

6. The liquid crystal display module according to claim 1, wherein: The quantum dot layer (8) is a CdSe / ZnS quantum dot layer.

7. The liquid crystal display module according to claim 1, wherein: A plurality of metal guide wires (6) are uniformly passed through the interior of the first polarizing plate (5); a conductive interface (3) is installed on one side of the outer wall of the outer frame (1); and the conductive interface (3) is connected to the metal guide wires (6).

8. The liquid crystal display module according to claim 1, wherein: Honeycomb aluminum (22) is provided on all four sides of the inner portion of the outer frame (1).

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