Simple and stable display screen

Abstract

The utility model relates to a simple and stable display screen, which comprises a lower iron frame, an upper iron frame, a liquid crystal panel, a backlight module and a PCB (printed circuit board) component, the PCB component is mounted on the lower iron frame, a plurality of bumps for supporting the PCB component are arranged on the lower iron frame, one side of the backlight module is connected with the lower iron frame, and the other side of the backlight module is connected with the upper iron frame. The upper iron frame is arranged on the edge of the liquid crystal panel in a pressed mode and connected with the lower iron frame in a buckled mode. The utility model has the beneficial effects that the reliability can be improved, the production cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, specifically to a simple and stable display screen. Background Technology

[0002] With the continuous development of display technology, various displays have been widely used in many fields such as consumer electronics, industrial control, and medical equipment. In the structural design of displays, ensuring stability and electrical safety are crucial performance indicators, while reducing production costs and improving production efficiency are also goals that the industry continuously pursues.

[0003] In traditional display screen designs, to avoid electrical faults such as short circuits caused by direct contact between the exposed copper area of ​​the PCB board and the lower iron frame, conductive parts are usually pasted onto the exposed copper area of ​​the PCB board before connecting it to the iron frame. However, this design method has several problems. On the one hand, the conductive parts are usually made of materials such as conductive tape and conductive foam, which have a certain cost. Moreover, as the scale of display screen production continues to expand, the amount of conductive parts used also increases accordingly, making material costs a significant component of display screen production costs. On the other hand, pasting conductive parts adds an extra processing step. During production, it is necessary to assign dedicated workers or use automated equipment to perform the pasting operation. This not only prolongs the production cycle and reduces production efficiency but also increases labor costs. Furthermore, problems such as inaccurate pasting position and air bubbles may occur during the pasting process, affecting the effectiveness of the conductive parts and consequently impacting the performance and reliability of the display screen. Utility Model Content

[0004] The purpose of this invention is to provide a simple and stable display screen that can improve reliability, reduce production costs, and increase production efficiency.

[0005] A simple and stable display screen includes a lower iron frame, an upper iron frame, a liquid crystal panel, and a backlight module, and also includes a PCB assembly. The PCB assembly is mounted on the lower iron frame, and the lower iron frame has a plurality of protrusions supporting the PCB assembly. One side of the backlight module is connected to the lower iron frame, and the other side is connected to the liquid crystal panel. The upper iron frame is pressed against the edge of the liquid crystal panel and fastened to the lower iron frame.

[0006] In the above solution, the bumps can support the PCB assembly and prevent the exposed copper area on the PCB assembly from contacting the lower iron frame, thereby reducing the risk of short circuits. The structure is stable, improving the electrical safety and reliability of the display screen. The original design required attaching conductive parts to the exposed copper area to prevent contact between the PCB board and the lower iron frame, which added extra processing steps and production costs. By setting bumps, the same function can be achieved, reducing the use of conductive parts, thereby simplifying the production process and reducing labor and time costs in the production process. At the same time, by setting the function of the conductive parts that were originally attached by the bumps, material costs are reduced, thereby reducing the overall production cost of the display screen.

[0007] Furthermore, the protrusion and the lower iron frame are integrally formed.

[0008] In the above solutions, the unibody molding process is typically accomplished using molds, which allows for precise control of the size, shape, and position of the bumps. Unibody molding better ensures the accuracy and consistency of the bumps, guaranteeing that each bump on the lower frame accurately supports the PCB assembly, thus improving product quality stability. Simultaneously, the high-precision bumps also contribute to improving the accuracy of PCB assembly installation, further enhancing the overall performance of the display screen.

[0009] Furthermore, it also includes an outer cover, which is placed on the PCB assembly and connected to the lower iron frame.

[0010] In the above solution, the outer casing can be a metal casing, which can protect and shield the PCB assembly. The casing can withstand external forces such as impacts and compression, preventing direct damage to the PCB assembly, reducing the probability of display failure due to physical damage, extending the service life of the PCB assembly, and thus improving the overall reliability and stability of the display. In addition, the metal casing has good electromagnetic shielding performance, which can block external electromagnetic radiation from interfering with the PCB assembly. In modern environments with dense electronic devices, various electromagnetic waves exist, such as radio waves and microwaves. These electromagnetic waves may interfere with the electronic components in the PCB assembly, causing problems such as signal distortion and data transmission errors. The metal casing can shield external electromagnetic radiation, creating a relatively stable electromagnetic environment for the PCB assembly and ensuring its normal operation.

[0011] Furthermore, the lower iron frame is provided with a plurality of connecting blocks, which surround the outer periphery of the PCB assembly. Each connecting block is provided with a slot, and the outer cover is provided with a snap-fit ​​protrusion corresponding to the slot. The snap-fit ​​protrusion can engage with the slot.

[0012] In the above solution, the matching mechanism of the slot and the snap-fit ​​protrusion makes the installation process of the outer cover and the lower iron frame extremely simple. On the production line, simply align the snap-fit ​​protrusion on the outer cover with the slot on the connecting block of the lower iron frame and press gently to complete the installation of the outer cover. This rapid installation method greatly improves production efficiency, reduces installation time and labor costs, and helps to achieve large-scale, efficient production operations. Multiple connecting blocks surrounding the outer perimeter of the PCB assembly allow the outer cover to evenly bear external forces after installation. When the display is subjected to external pressure, these connecting blocks can distribute the pressure to various parts, avoiding excessive local stress that could cause deformation of the outer cover, further enhancing the structural strength and durability of the display.

[0013] Furthermore, the connecting block is arranged perpendicular to the lower iron frame, and the outer cover has an opening through which the connecting block can pass.

[0014] In the above solution, after the connecting block passes through the opening of the outer cover, it can effectively connect the outer cover and the lower iron frame together to form a stable overall structure. When the display screen is subjected to external forces such as vibration and impact, this connection method can better disperse and transmit external forces, prevent the outer cover from loosening or falling off, and ensure the reliability of the connection between the various components of the display screen.

[0015] Furthermore, the backlight module includes a central iron frame and a reflective film, a light guide plate, and an optical film assembly sequentially embedded in the central iron frame. The reflective film is disposed between the light guide plate and the lower iron frame, and the optical film assembly is disposed between the liquid crystal panel and the light guide plate.

[0016] In the above solution, the central iron frame provides a stable support framework for the reflective film, light guide plate, and optical film assembly. Embedding these components sequentially within the central iron frame effectively prevents displacement, shaking, or mutual compression during transportation, installation, or use, ensuring precise relative positioning between each component. The reflective film, positioned between the light guide plate and the lower iron frame, reflects light leaking from the bottom of the light guide plate back into the light guide plate, improving light utilization. The light guide plate is responsible for converting point or line light sources into surface light sources and uniformly guiding the light to the optical film assembly. The optical film assembly further processes the light, such as through diffusion and brightening, thereby enhancing the overall optical performance of the display screen and making the image clearer, brighter, and more uniform.

[0017] Furthermore, an isolation frame is provided between the liquid crystal panel and the optical film assembly.

[0018] In the above solution, the isolation frame provides precise positioning and fixation between the LCD panel and the optical film assembly. During the assembly of the display, the isolation frame serves as a reference point to ensure accurate positioning between the LCD panel and the optical film, thereby firmly fixing the LCD panel in its corresponding position and preventing displacement or shaking during use, thus ensuring the structural stability and reliability of the display.

[0019] Furthermore, the optical film assembly includes a diffusion film, a lower brightness enhancement film, and an upper brightness enhancement film, which are sequentially connected to the light guide plate.

[0020] In the above scheme, the diffuser film is located near the light guide plate, and its main function is to scatter and diffuse the light emitted from the light guide plate. The lower brightness enhancement film usually has a special microstructure, such as a prism structure. It can converge and redirect the light diffused by the diffuser film. The upper and lower brightness enhancement films work together to further process the light. It can further optimize and enhance the light processed by the lower brightness enhancement film.

[0021] This invention provides a simple and stable display screen that improves reliability, reduces production costs, and increases production efficiency. The bumps support the PCB assembly, preventing exposed copper areas on the PCB from contacting the lower iron frame, thus reducing the risk of short circuits. The structure is stable, improving the electrical safety and reliability of the display screen. The original design required attaching conductive parts to the exposed copper areas to prevent contact with the lower iron frame, adding extra processing steps and production costs. By using bumps, the same function can be achieved, reducing the use of conductive parts, simplifying the production process, and reducing labor and time costs. Furthermore, by using the functionality of the conductive parts that were originally attached, material costs are reduced, thereby lowering the overall production cost of the display screen. Attached Figure Description

[0022] Figure 1 This is an exploded view of a simple and stable display screen according to one embodiment.

[0023] Figure 2 This is a schematic diagram showing the positions of the outer casing and PCB assembly in one embodiment.

[0024] Figure 3 This is a perspective view of a simple and stable display screen according to an embodiment.

[0025] Figure 4 This is an exploded view of the backlight module in one embodiment.

[0026] The following are the symbol descriptions: 1. Upper iron frame; 2. Lower iron frame; 21. Raised dot; 3. LCD panel; 4. PCB assembly; 5. Backlight module; 51. Middle iron frame; 52. Reflective film; 53. Light guide plate; 54. Diffuser film; 55. Lower brightness enhancement film; 56. Upper brightness enhancement film; 6. Outer cover; 61. Snap-fit ​​protrusion; 62. Opening; 7. Connecting block; 71. Slot; 8. Isolation frame. Detailed Implementation

[0027] The present invention provides a simple and stable display screen in further detail below with reference to specific embodiments and accompanying drawings.

[0028] like Figures 1 to 4 As shown in a preferred embodiment, a simple and stable display screen of this utility model includes a lower iron frame 2, an upper iron frame 1, a liquid crystal panel 3, and a backlight module 5, and also includes a PCB assembly 4. The PCB assembly 4 is mounted on the lower iron frame 2, and the lower iron frame 2 is provided with a plurality of protrusions 21 supporting the PCB assembly 4. One side of the backlight module 5 is connected to the lower iron frame 2, and the other side is connected to the liquid crystal panel 3. The upper iron frame 1 is pressed against the edge of the liquid crystal panel 3 and fastened to the lower iron frame 2. The protrusions 21 can support the PCB assembly 4 and prevent the exposed copper area on the PCB assembly 4 from contacting the lower iron frame 2, thereby reducing the risk of short circuit. The structure is stable, improving the electrical safety and reliability of the display screen. The original design required to attach conductive parts to the exposed copper area of ​​the PCB board to prevent contact with the lower iron frame 2, which increased the additional processing steps and production costs. By setting the protrusions 21, the same function can be achieved, reducing the use of conductive parts, thereby simplifying the production process and reducing labor and time costs in the production process. At the same time, by setting the function of the conductive parts that were originally attached by the protrusions 21, the material cost is reduced, thereby reducing the overall production cost of the display screen.

[0029] like Figure 2 and Figure 3 As shown, in some embodiments, the bump 21 and the lower iron frame 2 are integrally formed. The integral forming process is typically accomplished using a mold, which allows for precise control of the size, shape, and position of the bump 21. Integral forming better ensures the accuracy and consistency of the bump 21, ensuring that each bump 21 on the lower iron frame 2 accurately supports the PCB assembly, thus improving product quality stability. Simultaneously, the high-precision bump 21 also helps improve the accuracy of PCB assembly installation, further enhancing the overall performance of the display screen.

[0030] like Figure 2 and Figure 3As shown, in some embodiments, an outer cover 6 is also included, which is placed over the PCB assembly 4 and connected to the lower iron frame 2. The outer cover 6 can be a metal outer cover 6, which can protect and shield the PCB assembly 4. The outer cover 6 can withstand external forces such as impact and compression, preventing direct damage to the PCB assembly, reducing the probability of display failure due to physical damage, extending the service life of the PCB assembly, and thus improving the reliability and stability of the entire display. In addition, the metal outer cover 6 has good electromagnetic shielding performance, which can block external electromagnetic radiation from interfering with the PCB assembly. In modern environments with dense electronic devices, various electromagnetic waves exist, such as radio waves and microwaves. These electromagnetic waves may interfere with the electronic components in the PCB assembly, causing problems such as signal distortion and data transmission errors. The metal outer cover 6 can shield external electromagnetic radiation, creating a relatively stable electromagnetic environment for the PCB assembly and ensuring its normal operation.

[0031] like Figure 2 and Figure 3 As shown, in some embodiments, the lower iron frame 2 is provided with multiple connecting blocks 7, which surround the outer periphery of the PCB assembly 4. Each connecting block 7 has a slot 71, and the outer cover 6 has a corresponding engaging protrusion 61 that engages with the slot 71. This engagement method between the slot 71 and the engaging protrusion 61 makes the installation process of the outer cover 6 and the lower iron frame 2 extremely simple. On the production line, simply align the engaging protrusion 61 on the outer cover 6 with the slot 71 on the connecting block 7 of the lower iron frame 2 and press gently to complete the installation of the outer cover 6. This rapid installation method greatly improves production efficiency, reduces installation time and labor costs, and helps to achieve large-scale, efficient production operations. The multiple connecting blocks 7 surrounding the outer periphery of the PCB assembly allow the outer cover 6 to evenly bear external forces after installation. When the display screen is subjected to external pressure, these connecting blocks 7 can distribute the pressure to various parts, preventing excessive local stress that could cause deformation of the outer cover 6, further enhancing the structural strength and durability of the display screen.

[0032] like Figure 2 and Figure 3 As shown, in some embodiments, the connecting block 7 is arranged perpendicular to the lower iron frame 2, and the outer cover 6 has an opening 62 through which the connecting block 7 can pass. After the connecting block 7 passes through the opening 62 of the outer cover 6, it can effectively connect the outer cover 6 and the lower iron frame 2 together to form a stable overall structure. When the display screen is subjected to external forces such as vibration and impact, this connection method can better disperse and transmit external forces, prevent the outer cover 6 from loosening or falling off, and ensure the reliability of the connection between the various components of the display screen.

[0033] like Figure 4As shown, in some embodiments, the backlight module 5 includes a central frame 51 and a reflective film 52, a light guide plate 53, and an optical film assembly sequentially embedded within the central frame 51. The reflective film 52 is disposed between the light guide plate 53 and the lower frame 2, and the optical film assembly is disposed between the liquid crystal panel 3 and the light guide plate 53. The central frame 51 provides a stable support frame for the reflective film 52, the light guide plate 53, and the optical film assembly. These components are sequentially embedded within the central iron frame 51, effectively preventing displacement, shaking, or mutual compression during transportation, installation, or use, ensuring precise relative positioning between each component. The reflective film 52, positioned between the light guide plate 53 and the lower iron frame 2, reflects light leaking from the bottom of the light guide plate 53 back into the light guide plate 53, improving light utilization. The light guide plate 53 is responsible for converting point or line light sources into surface light sources and uniformly guiding the light to the optical film assembly. The optical film assembly further processes the light, such as diffusion and brightening, thereby enhancing the overall optical performance of the display screen and making the image clearer, brighter, and more uniform.

[0034] like Figure 4 As shown, in some embodiments, an isolation frame 8 is further provided between the liquid crystal panel 3 and the optical film assembly. The isolation frame 8 can provide precise positioning and fixation between the liquid crystal panel 3 and the optical film assembly. During the assembly of the display screen, the isolation frame 8 can serve as a reference point to ensure that the position between the liquid crystal panel 3 and the optical film assembly is accurate, thereby firmly fixing the liquid crystal panel in the corresponding position, preventing displacement or shaking during use, and ensuring the structural stability and reliability of the display screen.

[0035] like Figure 4 As shown, in some embodiments, the optical film assembly includes a diffuser film 54, a lower brightness enhancement film 55, and an upper brightness enhancement film 56, which are sequentially connected to the light guide plate 53. The diffuser film 54 is located close to the light guide plate 53, and its main function is to scatter and diffuse the light emitted from the light guide plate 53. The lower brightness enhancement film 55 typically has a special microstructure, such as a prism structure. It can converge and redirect the light diffused by the diffuser film 54. The upper brightness enhancement film 56 works in conjunction with the lower brightness enhancement film 55 to further process the light. It can further optimize and enhance the light processed by the lower brightness enhancement film 55.

[0036] This utility model discloses a simple and stable working principle and process for a display screen. During display screen assembly, the PCB assembly is placed on the lower iron frame 2. Several pre-set protrusions 21 on the lower iron frame 2 precisely support the PCB assembly. These protrusions 21 act as isolation points, preventing direct contact between the exposed copper areas on the PCB assembly and the lower iron frame 2. Contact between exposed copper areas and the lower iron frame 2 could easily cause short circuits, affecting the normal operation of the display screen. An outer cover 6, typically made of metal, is placed over the PCB assembly and connected to the lower iron frame 2. During daily use, the outer cover 6 prevents external physical impacts from damaging the PCB assembly and other internal components, providing a robust physical protective barrier for the display screen. The outer cover 6 also shields against external electromagnetic interference, preventing it from adversely affecting the signal processing and transmission of the PCB assembly, ensuring the display screen can stably receive and process signals.

[0037] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A simple and stable display screen comprising a lower iron frame, an upper iron frame, a liquid crystal panel and a backlight module, characterized in that, The PCB assembly is mounted on the lower iron frame, the lower iron frame is provided with a plurality of convex points supporting the PCB assembly, one side of the backlight module is connected with the lower iron frame, the other side is connected with the liquid crystal panel, the upper iron frame is pressed on the edge of the liquid crystal panel and buckled with the lower iron frame.

2. The simple stable display of claim 1, wherein, The convex points and the lower iron frame are integrally formed.

3. The simple stable display of claim 1, wherein, The outer cover is covered on the PCB assembly and connected with the lower iron frame.

4. The simple stable display of claim 3, wherein, The lower iron frame is provided with a plurality of connecting blocks, the connecting blocks are arranged around the outer periphery of the PCB assembly, the connecting blocks are provided with clamping grooves, the outer cover is provided with clamping protrusions corresponding to the positions of the clamping grooves, and the clamping protrusions can be clamped with the clamping grooves.

5. The simple stable display of claim 4, wherein, The connecting blocks are perpendicular to the lower iron frame, the outer cover is provided with an opening, and the connecting blocks can pass through the opening.

6. The simple, stable display of claim 1, wherein, The backlight module comprises a middle iron frame, a reflection film, a light guide plate and an optical film assembly which are sequentially embedded in the middle iron frame, the reflection film is arranged between the light guide plate and the lower iron frame, and the optical film assembly is arranged between the liquid crystal panel and the light guide plate.

7. The simple stable display of claim 6, wherein, An isolation frame is further arranged between the liquid crystal panel and the optical film assembly.

8. The simple stable display of claim 6, wherein, The optical film assembly comprises a diffusion film, a lower light enhancement film and an upper light enhancement film, and the diffusion film, the lower light enhancement film and the upper light enhancement film are sequentially connected with the light guide plate.

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