Display screen with good protection performance
By adopting an upper iron frame structure with a bent section and an arc-shaped contact section and a diffusion reflective film design in the liquid crystal display module, the problems of scratches and loosening at the connection between the upper iron frame and the FPC are solved, thereby improving the structural strength and signal stability of the display screen.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-20
AI Technical Summary
In existing LCD display modules, the connection structure between the upper frame and the FPC has sharp edges that may scratch the copper foil traces on the FPC surface, and the large gap at the right-angle contact point can cause the FPC to loosen or shift, affecting the stability of the electrical connection.
The upper iron frame structure features a bend and an arc-shaped contact section. The bend covers the lower iron frame edge, and the arc-shaped contact section contacts the FPC, reducing gaps and enhancing rigidity. The slot provides clearance space. Combined with a diffuse reflective film and a stable frame structure, this ensures FPC fixation and signal stability.
It effectively prevents FPC lines from being scratched, enhances structural strength and stability, ensures the stability and reliability of signal transmission, reduces component displacement and light leakage, and extends service life.
Smart Images
Figure CN224020106U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display bottle technology, specifically to a display screen with good protective performance. Background Technology
[0002] In existing LCD modules, the connection structure between the upper metal frame and the flexible printed circuit board (FPC) typically has the following problems: the part where the upper metal frame contacts the FPC is a right-angle structure. During assembly or use, the sharp edges of the metal frame may scratch the copper foil traces on the FPC surface, leading to abnormal signal transmission or even a break in the circuit. At the same time, the large gap that usually exists between the right-angle contact part and the FPC makes the FPC prone to loosening or shifting when subjected to external force, affecting the stability of the electrical connection. Utility Model Content
[0003] The purpose of this invention is to provide a display screen with good protective performance that can prevent the first FPC from being scratched, enhance structural strength and stability, and has a simple structure.
[0004] A display screen with good protection performance includes a backlight module, a liquid crystal panel, a lower iron frame, and an upper iron frame. 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 liquid crystal panel is connected to a first FPC, which is bent towards the lower iron frame to form a bent portion. The upper iron frame is pressed against the edge of the liquid crystal panel and fastened to the lower iron frame. The upper iron frame includes an abutment portion that contacts the bent portion. The end of the abutment portion is arc-shaped, and two slots are formed at both ends of the abutment portion.
[0005] In the above scheme, the portion of the first FPC bent towards the lower iron frame forms a bend, which covers the position of the lower iron frame edge. The part of the upper iron frame that contacts the bend is the abutment. The end of the abutment is stamped into an arc shape, with the arc surface of the abutment facing the first FPC. This can prevent the sharp edges of the lower iron frame edge from scratching the circuits of the first FPC during assembly or use. At the same time, since the abutment is stamped into an arc shape, the gap between the abutment and the first FPC is reduced. The arc structure increases the rigidity of the abutment, which can press the first FPC more firmly and increase the structural strength. The slots at both ends of the abutment provide clearance space for the first FPC to prevent extrusion deformation and also facilitate the stamping of the abutment during processing.
[0006] Furthermore, the slot includes a first side and a second side, and the end of the bent portion is located between the first side and the second side.
[0007] In the above scheme, the end of the bending part is between the first side edge and the second side edge of the notch, so that the upper iron frame does not have a right angle edge in contact with the first FPC, and the risk of scratching the first FPC by the upper iron frame during installation is also reduced, thereby ensuring the stability and reliability of the display screen signal transmission.
[0008] Further, the notch is U-shaped.
[0009] In the above scheme, the U-shaped notch has a smooth arc-shaped bottom and a transition without sharp corners. During the assembly and use of the display screen, the bending part of the first FPC is in the U-shaped notch, which can avoid contact with the sharp parts of the upper iron frame. Compared with other shapes of notches, the U-shaped design minimizes the risk of scratching and wearing the first FPC circuit, effectively protects the integrity of the first FPC circuit, and thus ensures the stability of the display screen signal transmission.
[0010] Further, the lower iron frame is attached with a first diffusion reflection film, which includes a first main part and a first bending part, the first main part covers the first FPC, and the first bending part covers the side frame of the upper iron frame.
[0011] In the above scheme, the first diffusion reflection film itself has the functions of light diffusion and reflection, the first main part covers the first FPC, and the first bending part covers the side frame of the upper iron frame, which can effectively prevent light leakage at the connection position of the first FPC and the upper iron frame and the lower iron frame. To some extent, the first diffusion reflection film also plays an auxiliary fixing role.
[0012] Further, the backlight module includes a middle iron frame and a reflection film, a light guide plate and an optical film assembly 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.
[0013] In the above scheme, the middle iron frame provides a stable support frame for the reflection film, the light guide plate and the optical film assembly. By sequentially embedding these components in the middle iron frame, displacement, shaking or mutual extrusion of them during transportation, installation or use can be effectively prevented, and the precise relative positional relationship between the components is ensured. The reflection film is arranged between the light guide plate and the lower iron frame, which can reflect the light leaked from the bottom of the light guide plate back into the light guide plate, improving the utilization rate of light. The light guide plate is responsible for converting point light sources or linear light sources into area light sources and uniformly guiding light to the optical film assembly. The optical film assembly further processes the light, such as diffusion and brightening, thereby improving the overall optical performance of the display screen and making the picture display clearer, brighter and more uniform.
[0014] Further, the liquid crystal panel and the optical film assembly are further provided with an isolation frame.
[0015] In the above scheme, the isolation frame can provide accurate positioning and fixing between the liquid crystal panel and the optical film assembly. During the assembly process of the display screen, the isolation frame can serve as a reference datum to ensure the accurate position of the liquid crystal panel and the optical film, thereby firmly fixing the liquid crystal panel at the corresponding position and preventing displacement or shaking during use, ensuring the structural stability and reliability of the display screen.
[0016] Further, one end of the middle iron frame is embedded with a lamp bead assembly, the lamp bead assembly is connected with a second FPC, the lower iron frame is provided with an opening, and the second FPC passes through the opening and is bent towards the lower iron frame.
[0017] In the above scheme, the second FPC is connected with the lamp bead assembly to provide a reliable electrical connection mode for power supply and signal transmission of the lamp bead assembly. The second FPC is also a flexible circuit board, which has good flexibility and bendability, can be conveniently connected with the lamp bead assembly, and can be flexibly wired according to the space structure inside the backlight module, thereby reducing the difficulty and complexity of electrical connection. The opening is arranged on the lower iron frame, and the second FPC passes through the opening and is bent towards the lower iron frame. This design helps to centrally manage and hide the lines, guides the lines to one side of the lower iron frame, avoids the disorderly distribution of the lines inside the backlight module, reduces the possibility of mutual interference between the lines, and also makes the appearance of the entire backlight module more neat and beautiful.
[0018] Further, a second diffusion reflection film is attached to the lower iron frame, the second diffusion reflection film comprises a second main body part and a second bending part, the second main body part covers the opening and the second FPC, and the second bending part covers the side frame of the upper iron frame.
[0019] In the above scheme, the second diffusion reflection film can reflect the light that may otherwise be transmitted through the opening or absorbed by the second FPC back into the backlight module, thereby participating in the light propagation and display process again. In addition, the second diffusion reflection film can block impurities such as dust and water vapor from entering the backlight module through the opening, thereby preventing these impurities from adhering to the second FPC or other electronic components, reducing electrical faults caused by dust accumulation and water vapor erosion, and prolonging the service life of the backlight module.
[0020] The utility model discloses a display screen with good protection performance has the beneficial effect that can prevent the first FPC from being scratched, enhances structural strength and stability and simple structure. The part of first FPC bending towards the direction of lower iron frame forms the bending part, and the bending part will cover the position of lower iron frame frame, and the part of upper iron frame and bending part contact is abutment part, and the end of abutment part is stamped into arc, and the arc surface of abutment part faces first FPC, can avoid the edge and corner of lower iron frame frame end in the process of assembling or using scratch the circuit of first FPC, and simultaneously because abutment part is stamped into arc, the clearance between abutment part and first FPC reduces like this, and the arc structure increases the rigidity of abutment part, can press the first FPC more firmly, and the strength of structure is higher, and the slot of both ends of abutment part provides the avoidance space for first FPC, prevents extrusion deformation, also facilitates the stamping of abutment part when processing. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a display screen structure diagram with good protection performance for an embodiment.
[0022] Figure 2 It is a display screen overall perspective view with good protection performance for an embodiment.
[0023] Figure 3 It is Figure 2 It is the local enlarged view of A in the middle.
[0024] Figure 4 It is a first diffusion reflection film and second diffusion reflection film schematic view for an embodiment.
[0025] Figure 5 It is a display screen exploded schematic view with good protection performance for an embodiment.
[0026] Explanation of the attached drawing: 1, liquid crystal panel;2, backlight module;21, middle iron frame;22, reflection film;23, light guide plate;24, optical film assembly;3, lower iron frame;31, opening;4, upper iron frame;41, abutment part;42, slot;421, first side;422, second side;5, first FPC;51, bending part;6, first diffusion reflection film;61, first main part;62, second main part;7, second diffusion reflection film;71, second main part;8, second FPC;9, isolation frame. DETAILED DESCRIPTION
[0027] The utility model discloses a display screen with good protection performance will be further described in detail below with specific embodiment and attached drawing.
[0028] For example, Figure 1 And Figure 2As shown, in a preferred embodiment, the utility model discloses a display screen with good protection performance, which comprises a backlight module 2, a liquid crystal panel 1, a lower iron frame 3 and an upper iron frame 4, one side of the backlight module 2 is connected with the lower iron frame 3, the other side is connected with the liquid crystal panel 1, the liquid crystal panel 1 is connected with a first FPC 5, the first FPC 5 is bent in the direction of the lower iron frame 3 to form a bending part 51, the upper iron frame 4 is pressed on the edge of the liquid crystal panel 1 and buckled with the lower iron frame 3, the upper iron frame 4 comprises an abutting part 41 in contact with the bending part 51, the end of the abutting part 41 is arc-shaped, and two notches 42 are formed at the two ends of the abutting part 41.
[0029] The part of the first FPC 5 bent in the direction of the lower iron frame 3 forms the bending part 51, the bending part 51 covers the position of the frame of the lower iron frame 3, the part of the upper iron frame 4 in contact with the bending part 51 is the abutting part 41, the end of the abutting part 41 is stamped into an arc shape, the arc surface of the abutting part 41 faces the first FPC 5, which can avoid the edges of the end of the frame of the lower iron frame 3 scratching the circuit of the first FPC 5 during assembly or use, and since the abutting part 41 is stamped into an arc shape, the gap between the abutting part 41 and the first FPC 5 is reduced, the arc structure increases the rigidity of the abutting part 41, the first FPC 5 can be pressed more firmly, the structure has higher strength, and the notches 42 at the two ends of the abutting part 41 provide a space for the first FPC 5 to avoid extrusion deformation and facilitate stamping of the abutting part 41 during processing.
[0030] As shown in Figure 2 and Figure 3 In some embodiments, the notch 42 comprises a first side edge 421 and a second side edge 422, and the end of the bending part 51 is between the first side edge 421 and the second side edge 422. The end of the bending part 51 is between the first side edge 421 and the second side edge 422 of the notch 42, so that the upper iron frame 4 does not have a right-angle edge in contact with the first FPC 5, and the risk of scratching the first FPC 5 by the upper iron frame 4 during installation is also reduced, thereby ensuring the stability and reliability of signal transmission of the display screen.
[0031] As shown in Figure 2 and Figure 3 In some embodiments, the notch 42 is U-shaped. The U-shaped notch 42 has a smooth arc-shaped bottom and a transition without sharp edges. During assembly and use of the display screen, the bending part 51 of the first FPC 5 is in the U-shaped notch 42, which can avoid contact with the sharp parts of the upper iron frame 4, compared with other shapes of the notch 42, the U-shaped design minimizes the risk of scratching and wearing the circuit of the first FPC 5, effectively protects the integrity of the circuit of the first FPC 5, and thus guarantees the stability of signal transmission of the display screen.
[0032] As shown in Figure 4As shown in some embodiments, the first diffusion reflection film 6 is attached to the lower iron frame 3, and the first diffusion reflection film 6 includes a first main body part 61 and a first bending part. The first main body part 61 covers the first FPC 5, and the first bending part covers the side frame of the upper iron frame 4. The first diffusion reflection film 6 itself has the functions of light diffusion and reflection. The first main body part 61 covers the first FPC 5, and the first bending part covers the side frame of the upper iron frame 4, which can effectively prevent light leakage at the connection position of the first FPC 5 and the upper iron frame 4 and the lower iron frame 3. To some extent, the first diffusion reflection film 6 also plays an auxiliary fixing role.
[0033] As shown in some embodiments, Figure 5 As shown in some embodiments, the backlight module 2 includes a middle iron frame 21 and a reflection film 22, a light guide plate 23 and an optical film assembly 24 which are sequentially embedded in the middle iron frame 21. The reflection film 22 is arranged between the light guide plate 23 and the lower iron frame 3, and the optical film assembly 24 is arranged between the liquid crystal panel 1 and the light guide plate 23. The middle iron frame 21 provides a stable support frame for the reflection film 22, the light guide plate 23 and the optical film assembly 24. By sequentially embedding these components in the middle iron frame 21, it can effectively prevent them from being displaced, shaken or pressed against each other during transportation, installation or use, and ensure that the relative positional relationship between each component is accurate.
[0034] The reflection film 22 is arranged between the light guide plate 23 and the lower iron frame 3, which can reflect the light leaked from the bottom of the light guide plate 23 back into the light guide plate 23, thereby improving the utilization rate of light. The light guide plate 23 is responsible for converting point light sources or linear light sources into area light sources and uniformly guiding light to the optical film assembly 24. The optical film assembly 24 further processes the light, such as diffusion, brightness enhancement, etc., thereby improving the overall optical performance of the display screen and making the picture display clearer, brighter and more uniform.
[0035] In this embodiment, the optical film assembly 24 includes a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film which are sequentially arranged.
[0036] As shown in some embodiments, Figure 5 As shown in some embodiments, a separation frame 9 is further arranged between the liquid crystal panel 1 and the optical film assembly 24. The separation frame 9 can provide accurate positioning and fixing between the liquid crystal panel 1 and the optical film assembly 24. During the assembly of the display screen, the separation frame 9 can serve as a reference datum to ensure the accurate position between the liquid crystal panel 1 and the optical film, thereby firmly fixing the liquid crystal panel 1 at the corresponding position and preventing displacement or shaking during use, thereby ensuring the structural stability and reliability of the display screen.
[0037] As shown in some embodiments, Figure 2 and Figure 4As shown in the drawings, in some embodiments, the lamp bead assembly is embedded at one end of the middle iron frame 21, the second FPC 8 is connected to the lamp bead assembly, the lower iron frame 3 is provided with an opening 31, and the second FPC 8 passes through the opening 31 and is bent towards the lower iron frame 3. The lamp bead assembly is connected through the second FPC 8, which provides a reliable electrical connection mode for power supply and signal transmission of the lamp bead assembly. The second FPC 8 is also a flexible circuit board, which has good flexibility and bendability, can be conveniently connected with the lamp bead assembly, and can be flexibly wired according to the space structure inside the backlight module 2, thereby reducing the difficulty and complexity of electrical connection. The opening 31 is arranged on the lower iron frame 3, the second FPC 8 passes through the opening 31 and is bent towards the lower iron frame 3, and this design is helpful for centralized management and hiding of the circuit, guides the circuit to one side of the lower iron frame 3, avoids disorderly distribution of the circuit inside the backlight module 2, reduces the possibility of mutual interference between the circuits, and also makes the appearance of the entire backlight module 2 more neat and beautiful.
[0038] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, in some embodiments, the second diffusion reflection film 7 is attached to the lower iron frame 3, the second diffusion reflection film 7 includes a second main body part 7162 and a second bending part, the second main body part 7162 covers the opening 31 and the second FPC 8, and the second bending part covers the side frame of the upper iron frame 4. The second diffusion reflection film 7 can reflect the light that may be transmitted through the opening 31 or absorbed by the second FPC 8 back to the inside of the backlight module 2, re-participate in the light propagation and display process, and can also block impurities such as dust and water vapor from entering the inside of the backlight module 2 through the opening 31, thereby avoiding the impurities from adhering to the second FPC 8 or other electronic elements, reducing electrical faults caused by dust accumulation and water vapor erosion, and prolonging the service life of the backlight module 2.
[0039] The working principle and process of the display screen with good protection performance of the utility model, after the backlight module 2 and liquid crystal panel 1 are installed, the upper iron frame 4 is pressed and arranged at the edge of the liquid crystal panel 1 and is buckled with the lower iron frame 3, and in the buckling process, the abutting part 41 of the upper iron frame 4 will contact the bending part 51 of the first FPC 5. Since the end of the abutting part 41 is stamped into an arc shape and the arc surface faces the first FPC 5, when the abutting part 41 contacts the bending part 51, the edges of the lower iron frame 3 can effectively avoid scratching the circuit of the first FPC during assembly or use, because the arc structure is relatively smooth and will not cause sharp pressure concentration on the bending part 51, thereby protecting the integrity of the first FPC and ensuring the stability of signal transmission.
[0040] The arc-shaped abutting portion 41 not only avoids the scratching problem, but also increases the rigidity of itself, and the rigidity enables the abutting portion 41 to press the bending portion 51 of the first FPC 5 more firmly, reduces the gap between the abutting portion 41 and the first FPC 5, in this way, the first FPC 5 is fixed more firmly, reduces the signal transmission failure caused by looseness, and improves the stability of the overall structure of the display screen.
[0041] In the description of the present application, it should be understood that the terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0042] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0043] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0044] Although the description of the present application is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made according to the above content for those skilled in the art. Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A display screen with good protective performance, comprising a backlight module, a liquid crystal panel, a lower iron frame, and an upper iron frame, characterized in that, 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 liquid crystal panel is connected to a first FPC. The first FPC is bent towards the lower iron frame to form a bent portion. The upper iron frame is pressed against the edge of the liquid crystal panel and fastened to the lower iron frame. The upper iron frame includes an abutment portion that contacts the bent portion. The end of the abutment portion is arc-shaped, and two slots are formed at both ends of the abutment portion.
2. The display screen with good protective performance according to claim 1, characterized in that, The slot includes a first side and a second side, and the end of the bent portion is located between the first side and the second side.
3. The display screen with good protective performance according to claim 1, characterized in that, The slot is U-shaped.
4. The display screen with good protective performance according to claim 1, characterized in that, A first diffusion and reflective film is attached to the lower iron frame. The first diffusion and reflective film includes a first main body and a first bent part. The first main body covers the first FPC, and the first bent part covers the side frame of the upper iron frame.
5. The display screen with good protective performance according to claim 1, characterized in that, 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 located between the light guide plate and the lower iron frame, and the optical film assembly is located between the liquid crystal panel and the light guide plate.
6. The display screen with good protective performance according to claim 5, characterized in that, An isolation frame is also provided between the liquid crystal panel and the optical film assembly.
7. The display screen with good protective performance according to claim 5, characterized in that, An LED bead assembly is embedded at one end of the middle iron frame. The LED bead assembly is connected to a second FPC. An opening is provided on the lower iron frame. The second FPC passes through the opening and bends toward the lower iron frame.
8. The display screen with good protective performance according to claim 7, characterized in that, A second diffusion and reflective film is attached to the lower iron frame. The second diffusion and reflective film includes a second main body and a second bent part. The second main body covers the opening and the second FPC, and the second bent part covers the side frame of the upper iron frame.