Liquid crystal display screen capable of avoiding interference between upper iron stand and lower iron stand and handheld communication equipment

Abstract

The utility model discloses a liquid crystal display screen capable of avoiding interference of upper and lower iron stands and handheld communication equipment, the liquid crystal display screen capable of avoiding interference of upper and lower iron stands comprises a lower iron stand, a backlight module, a display module and an upper iron stand, the lower iron stand comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate; the backlight module is arranged above the bottom plate; the display module is arranged above the backlight module; the upper iron frame comprises a top plate and a folded edge extending downwards from the edge of the top plate, the top plate close to the folded edge is subjected to edge pressing treatment to be staggered to form a first top plate close to the folded edge and a second top plate away from the folded edge, and the first top plate is higher than the second top plate so that a groove can be formed in the inner surface of the top plate and a step can be formed on the outer surface of the top plate. The included angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle, the side wall is arranged on the inner surface of the folded edge, the lower iron frame and the upper iron frame are buckled, and the backlight module and the display module are wrapped in a space defined by the upper iron frame and the lower iron frame. Buckling difficulty is avoided, and assembling efficiency is improved.

Description

A liquid crystal display screen and handheld communication device that avoids interference between upper and lower iron frames Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and more specifically, to a liquid crystal display screen and a handheld communication device that avoids interference between the upper and lower iron frames. Background Technology

[0002] Typically, the upper frame of an LCD screen is fastened to the lower frame of the backlight using clips. Because the upper frame's edge is folded at a 90-degree angle, an inner rounded corner is created. Due to dimensional tolerances among the components, there is a risk of interference between the inner rounded corner of the upper frame's folded edge and the frame of the backlight's plastic or lower frame during assembly and fastening, leading to difficulties in fastening. Summary of the Invention

[0003] The technical problem to be solved by this utility model is how to avoid interference between the upper iron frame and the rubber frame or the lower iron frame, avoid the difficulty of fastening, and improve assembly efficiency.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] To solve the above-mentioned technical problems, this utility model provides a liquid crystal display screen that avoids interference between upper and lower iron frames. The screen includes a lower iron frame, a backlight module, a display module, and an upper iron frame. The lower iron frame includes a base plate and a sidewall extending upwards from the edge of the base plate. The backlight module is disposed above the base plate, and the display module is disposed above the backlight module. The upper iron frame includes a top plate and a folded edge extending downwards from the edge of the top plate. The top plate near the folded edge is offset by a pressing process to form a first top plate near the folded edge and a second top plate away from the folded edge. The first top plate is higher than the second top plate, forming a groove on the inner surface and a step on the outer surface. The angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle. The sidewall is disposed on the inner surface of the folded edge. The lower iron frame and the upper iron frame are fastened together, enclosing the backlight module and the display module within the space formed by the upper and lower iron frames.

[0006] In a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the width A of the groove is 0.5mm.

[0007] In a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the maximum height B of the groove and the step is 0.05mm.

[0008] In a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the thickness C of the folded edge and the top plate is 0.2mm.

[0009] In a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the distance D between the step and the folded edge is 0.7mm.

[0010] As a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, a PCB board is provided below the base plate. At least one baffle is stamped on the top and bottom of the lower surface of the base plate. The baffle is perpendicular to the base plate. At least one toggle foot is stamped on the left and right sides of the lower surface of the base plate. The toggle foot is rotatable. The PCB board is placed in the space defined by the baffle and the toggle foot.

[0011] As a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the cross-sectional shape of the toggle foot is L-shaped, and the toggle foot includes a root part connected to the base plate and a toggle part connected to the root part.

[0012] As a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, an inner recess is provided at the connection between the root and the inner side of the twist.

[0013] As a preferred embodiment of the liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model, the concave portion has a smooth transition.

[0014] This utility model provides a handheld communication device, which includes a liquid crystal display screen as described in any of the above claims to avoid interference between the upper and lower iron frames.

[0015] This utility model has the following beneficial effects:

[0016] Because the top plate near the folded edge is offset by pressing the edge, a first top plate near the folded edge and a second top plate away from the folded edge are formed. The first top plate is higher than the second top plate so that a groove is formed on the inner surface of the top plate and a step is formed on the outer surface of the top plate. The angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle. The rounded corner is made into a right angle by pressing the edge to avoid interference between the inner rounded corner of the upper iron frame and the right angle of the plastic frame of the backlight module or the frame wall of the lower iron frame, thus avoiding fastening difficulties and improving assembly efficiency. Attached Figure Description

[0017] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the structure of a liquid crystal display screen that avoids interference between the upper and lower iron frames provided by this utility model.

[0019] Figure 2 is an enlarged view of point A in Figure 1.

[0020] Figure 3 is a schematic diagram of the upper iron frame in Figure 2.

[0021] Figure 4 is a schematic diagram of the structural dimensions of Figure 3.

[0022] Figure 5 is a structural schematic diagram of Example 2.

[0023] Figure 6 is a bottom view of Figure 5 after the PCB board has been assembled.

[0024] Figure 7 is a bottom view of Figure 5.

[0025] Figure 8 is an enlarged view of point A in Figure 5.

[0026] Explanation of icon numbers:

[0027] Lower iron frame 1; Display module 2; Upper iron frame 3;

[0028] Base plate 11; Side wall 12;

[0029] Top plate 31; Folded edge 32;

[0030] First top plate 311; Second top plate 312; Groove 313; Step 314;

[0031] PCB board 4; retaining wall 13; twisting foot 14;

[0032] Root 141; Twist 142; Concave 143. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] This utility model provides a liquid crystal display screen that avoids interference between upper and lower iron frames. It includes a lower iron frame, a backlight module, a display module, and an upper iron frame. The lower iron frame includes a base plate and a sidewall extending upward from the edge of the base plate. The backlight module is disposed above the base plate, and the display module is disposed above the backlight module. The upper iron frame includes a top plate and a folded edge extending downward from the edge of the top plate. The top plate near the folded edge is offset by a pressing process to form a first top plate near the folded edge and a second top plate away from the folded edge. The first top plate is higher than the second top plate, forming a groove on the inner surface and a step on the outer surface of the top plate. The angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle. The sidewall is disposed on the inner surface of the folded edge. The lower iron frame and the upper iron frame are fastened together, enclosing the backlight module and the display module within the space formed by the upper and lower iron frames.

[0037] Because the top plate near the folded edge is offset by pressing the edge, a first top plate near the folded edge and a second top plate away from the folded edge are formed. The first top plate is higher than the second top plate so that a groove is formed on the inner surface of the top plate and a step is formed on the outer surface of the top plate. The angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle. The rounded corner is made into a right angle by pressing the edge to avoid interference between the inner rounded corner of the upper iron frame and the right angle of the plastic frame of the backlight module or the frame wall of the lower iron frame, thus avoiding fastening difficulties and improving assembly efficiency.

[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] Example 1, please refer to Figures 1 to 3, shows a liquid crystal display screen provided by this utility model to avoid interference between upper and lower iron frames. It includes a lower iron frame 1, a backlight module, a display module 2, and an upper iron frame 3. The lower iron frame 1 includes a base plate 11 and a side wall 12 extending upward from the edge of the base plate 11. The backlight module is disposed above the base plate 11. The display module 2 is disposed above the backlight module. The upper iron frame 3 includes a top plate 31 and a folded edge 32 extending downward from the edge of the top plate 31. The top plate 31 near the folded edge 32 is pressed to make the top plate... 31 is misaligned to form a first top plate 311 near the folded edge 32 and a second top plate 312 away from the folded edge 32. The first top plate 311 is higher than the second top plate 312 so that a groove 313 is formed on the inner surface of the top plate 31 and a step 314 is formed on the outer surface of the top plate 31. The angle between the inner surface of the folded edge 32 and the inner surface of the top plate 31 is a right angle. The side wall 12 is set on the inner surface of the folded edge 32. The lower iron frame 1 and the upper iron frame 3 are fastened together to enclose the backlight module and the display module 2 in the space formed by the upper iron frame 3 and the lower iron frame 1. Because the top plate 31 near the folded edge 32 is offset by the pressing edge treatment to form a first top plate 311 near the folded edge 32 and a second top plate 312 away from the folded edge 32, the first top plate 311 is higher than the second top plate 312 so that a groove 313 is formed on the inner surface of the top plate 31 and a step 314 is formed on the outer surface of the top plate 31. The angle between the inner surface of the folded edge 32 and the inner surface of the top plate 31 is a right angle. The rounded corner is processed into a right angle by the pressing edge treatment to avoid interference between the inner rounded corner of the upper iron frame 3 and the right angle of the plastic frame of the backlight module or the frame wall of the lower iron frame 1, avoid the difficulty of fastening, and improve the assembly efficiency.

[0040] Please refer to Figure 4. Further, the width A of the groove 313 is 0.5 mm, the maximum height B of the groove 313 and the step 314 is 0.05 mm, the thickness C of the folded edge 32 and the top plate 31 is 0.2 mm, and the distance D between the step 314 and the folded edge 32 is 0.7 mm.

[0041] Example 2, please refer to Figures 5 to 8. As a further optimization of Example 1, in this example, a PCB board 4 is provided below the base plate 11. At least one baffle 13 is stamped on the top and bottom of the lower surface of the base plate 11. The baffle 13 is perpendicular to the base plate 11. At least one toggle foot 14 is stamped on the left and right sides of the lower surface of the base plate 11. In this example, there are four baffles 13, two baffles 13 are provided on the top and bottom of the base plate 11, and four toggle feet 14, two toggle feet 14 are provided on the left and right sides of the base plate 11. In other examples, the number and position of the toggle feet 14 are required to be evenly distributed to achieve the function of limiting and fixing. The toggle feet 14 can rotate. The PCB board 4 is placed in the space defined by the baffles 13 and the toggle feet 14. Since the bottom surface of the base plate 11 is stamped with retaining walls 13 at the top and bottom, and the bottom surface of the base plate 11 is stamped with torsion feet 14 on the left and right sides, the torsion feet 14 and retaining walls 13 are set on the base plate 11 by using a die stamping method. The PCB board 4 is limited by the retaining walls 13 and the PCB board 4 is fixed by rotating the torsion feet 14. The assembly reliability of the PCB board 4 can be improved without affecting the cost and the PCB board 4 can be prevented from falling off.

[0042] Furthermore, the width of the retaining wall 13 is 8mm to 12mm. The assembly gap between the retaining wall 13 and the PCB board 4 is 0.3mm to 0.5mm. The height of the retaining wall 13 is the same as the thickness of the PCB board 4.

[0043] Furthermore, in order to enable the torsion foot 14 to best match the PCB board 4 and bend and fix it, the cross-sectional shape of the torsion foot 14 is L-shaped. The torsion foot 14 includes a root 141 and a torsion part 142. The root 141 is connected to the base plate 11, and the torsion part 142 is connected to the root 141.

[0044] Furthermore, the root 141 of the twist foot 14 has a width of 4mm to 6mm to ensure that the root 141 has sufficient strength.

[0045] Furthermore, the width of the twisting part 142 of the twisting foot 14 is 4mm to 6mm to ensure that the twisting foot 14 has sufficient length to press onto the PCB board 4 after being twisted, and the assembly gap between the twisting part 142 and the PCB board 4 is 0.3mm to 0.5mm.

[0046] Furthermore, a recessed portion 143 is provided at the connection between the root portion 141 and the inner side of the twist portion 142. The recessed portion 143 has a smooth transition to avoid stress concentration.

[0047] Furthermore, the depth of the recess 143 is 0.5mm to 1.0mm, and the distance between the deepest point of the recess 143 and the lower surface of the root 141 is 1.5mm to 2.5mm. This is to avoid the problem of the twisting foot 14 breaking easily when twisting because the width at this position is too narrow. The assembly gap between the twisting foot 14 and the PCB board 4 is 0.3mm to 0.5mm.

[0048] This utility model provides a handheld communication device, which includes a liquid crystal display screen as described in any of the above claims to avoid interference between the upper and lower iron frames.

[0049] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen that avoids interference between upper and lower iron frames, characterized in that, It includes: The lower frame includes a base plate and sidewalls extending upward from the edge of the base plate; A backlight module is disposed above the base plate; The display module is positioned above the backlight module; The upper frame includes a top plate and a folded edge extending downward from the edge of the top plate. The top plate near the folded edge is offset by pressing the edge to form a first top plate near the folded edge and a second top plate away from the folded edge. The first top plate is higher than the second top plate so that a groove is formed on the inner surface of the top plate and a step is formed on the outer surface of the top plate. The angle between the inner surface of the folded edge and the inner surface of the top plate is a right angle. The sidewall is provided on the inner surface of the folded edge. The lower frame is fastened to the upper frame and encloses the backlight module and the display module in the space formed by the upper frame and the lower frame.

2. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 1, characterized in that, The width A of the groove is 0.5 mm.

3. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 1, characterized in that, The maximum height B of the groove and step is 0.05 mm.

4. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 1, characterized in that, The thickness C of the folded edge and the top plate is 0.2 mm.

5. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 1, characterized in that, The distance D between the step and the folded edge is 0.7 mm.

6. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 1, characterized in that, A PCB board is disposed below the base plate. At least one retaining wall is stamped on the top and bottom of the lower surface of the base plate. The retaining wall is perpendicular to the base plate. At least one toggle foot is stamped on the left and right sides of the lower surface of the base plate. The toggle foot is rotatable. The PCB board is placed within the space defined by the retaining wall and the toggle foot.

7. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 6, characterized in that, The cross-sectional shape of the toggle foot is L-shaped, and the toggle foot includes a root portion connected to the base plate and a toggle portion connected to the root portion.

8. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 7, characterized in that, An indentation is provided at the connection between the root and the inner side of the twist.

9. The liquid crystal display screen for avoiding interference between upper and lower iron frames according to claim 8, characterized in that, The concave portion has a smooth transition.

10. A handheld communication device, characterized in that, It includes a liquid crystal display screen that avoids interference between the upper and lower iron frames as described in any one of claims 1-9.

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