FPC (Flexible Printed Circuit) scratch-resistant structure for display module

Abstract

The utility model discloses a flexible printed circuit (FPC) scratch-resistant structure for a display module, which comprises an iron frame, a flexible printed circuit board (FPC) and a flexible printed circuit board (FPC), the flaring part is arranged in the fitting area; when the fpc is attached to the attaching area, the flaring part can guide the fpc to be bent to be far away from the attaching area when the fpc is bent, the flaring part can enable the connecting position of the fpc and the attaching area to be expanded by a small section, when the FPC is bent or extruded, the distance between the edge of the FPC and the iron frame is large, the edge of the FPC is not prone to abutting against the iron frame to be scratched, and therefore the fpc is not prone to being damaged. And the bending position of the FPC can be prevented from being scratched or extruded.

Description

Technical Field

[0001] The utility model relates to the field of display modules, and in particular to an FPC anti-scratch structure for a display module. Background Art

[0002] The display screen generally includes: LCD components, backlight components, glass cover, main FPC and other components. When the module is assembled, the backlight FPC will be welded or plugged into the main FPC, and then bent along with the main FPC and attached to the back of the backlight module, and a layer of copper foil or aluminum foil will also be attached.

[0003] In the prior art, such as the Chinese patent document with application number CN202321010272.0, a backlight FPC structure and a display module are disclosed. By setting a single-sided insulating tape on the window at the bending area of ​​the backlight FPC body, it can prevent the backlight iron frame from scratching the backlight FPC when the backlight FPC body is bent and attached to the back of the backlight module, causing a short circuit or cable breakage, thereby improving the quality of the product.

[0004] Although the technical solution disclosed in the above patent document can solve the problem of scratching the backlight FPC to some extent, it still has limitations in actual operation, because this solution requires opening a window in the bending area of ​​the FPC body, which is difficult to operate in practice (for example, it is easy to have problems with the accuracy of the window opening, resulting in the FPC yield being affected). In the actual assembly process of the display module, such as Figure 1 During the assembly process of the module with an upper iron frame, the upper iron frame is prone to scratching or wearing the main screen FPC, resulting in poor appearance of the module or even display abnormality (this is because the iron frame is flush with the connection, and when the FPC is bent or squeezed, the edge of the FPC is easy to contact and scratch the iron frame). Utility Model Content

[0005] Based on this, it is necessary to provide an FPC anti-scratch structure for a display module to solve the problem of how to prevent the edge of the FPC from scratching the iron frame as mentioned in the above background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An FPC anti-scratch structure for a display module, comprising:

[0008] An iron frame having a bonding area for bonding with the FPC;

[0009] A flared portion, arranged in the fitting area;

[0010] When the FPC is bonded to the bonding area, the flared portion can guide the FPC to bend away from the bonding area when the FPC is bent.

[0011] Furthermore, the flared portion includes a main body section, the main body section is connected to the fitting area of ​​the iron frame, and avoidance areas are formed at both ends of the main body section.

[0012] Furthermore, after the avoidance area is formed on the main body segment, the structural projection of the main body segment is trapezoidal, T-shaped or quadrilateral.

[0013] Furthermore, the flared portion includes a main body section connected to the bonding area of ​​the iron frame, the edge of the main body section is provided with an extended edge, the extended edge is directly opposite to the bonding position with the FPC in the bonding area, and the edge of the main body section is provided with a protective groove.

[0014] Furthermore, two protective grooves are provided and are respectively located at two ends of the extended edge.

[0015] Furthermore, the depth of the protection groove is at least equal to the width of the expansion edge.

[0016] Furthermore, both ends of the notch of the protection groove are provided with sloped edges to increase the distance between the FPC and the edge of the notch of the protection groove.

[0017] Furthermore, the flared portion includes a main body section connected to the fitting area of ​​the iron frame, a supporting piece is provided at the edge of the main body section, the supporting piece is connected to the surface of the FPC, and flexible clamps connected to the main body section are provided on both sides of the supporting piece, and the two flexible clamps can be clamped on both side surfaces of the FPC respectively.

[0018] Furthermore, a bending groove is provided on the surface of the flexible clamping strip.

[0019] Furthermore, the length of the supporting member is not less than the length of the connecting area between the FPC and the bonding area.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model can expand the connection between the FPC and the bonding area by a small section through the flared portion. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is large, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the bent part of the FPC.

[0022] The extended edge further increases the distance between the FPC and the main section after bending. When the FPC swings left and right, causing the bending area to move toward a certain protective groove, the FPC is easily scratched against it because the original area was the main section. However, now that the protective groove is set, the scratch area is avoided, reducing the chance of scratching. At the same time, the sloped edge further increases the distance between the FPC and the edge of the protective groove, reducing the chance of the protective groove 6 edge scratching the FPC.

[0023] When the FPC bends, due to the presence of the insulating strip and the connecting strip, it will only bend from the connecting strip. At the same time, the flexible clamp will bend, and the bending point is in the bending groove. Through the guidance of these two bends, the bending area of ​​the FPC can be limited, reducing the chance of scratches. At the same time, the flexible clamp will clamp the FPC, reducing the chance of the FPC shaking, thereby further reducing the chance of scratches. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the iron frame structure in the prior art;

[0025] Figure 2 A schematic diagram of the structure of the main body section provided by the utility model;

[0026] Figure 3 A schematic diagram of the structure of the bonding area provided by the utility model;

[0027] Figure 4 A schematic diagram of the structure of the protection groove provided by the utility model;

[0028] Figure 5 This is a schematic structural diagram of the flexible clamping strip provided by the utility model.

[0029] The markings in the figure are as follows:

[0030] 1. Iron frame; 2. Expanding part; 3. Fitting area; 4. Main section; 5. Expansion edge; 6. Protection groove; 7. Slope edge; 8. Lifting piece; 9. Bending groove; 10. Flexible clamping strip. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] Fpc, flexible circuit board.

[0033] As described in the background art, opening a window in the bending area of ​​the FPC body is difficult in actual operation (for example, the accuracy of the window opening is prone to occur, resulting in the FPC yield being affected). In the actual assembly of the display module, Figure 1During the assembly process of the module with an upper iron frame, the upper iron frame is prone to scratching or wearing the main screen FPC, resulting in poor appearance of the module or even display abnormality (this is because the iron frame is flush with the connection, and when the FPC is bent or squeezed, the edge of the FPC is easy to contact and scratch the iron frame).

[0034] In order to solve this technical problem, the utility model provides an FPC anti-scratch structure for a display module.

[0035] Specifically, please refer to Figure 1-Figure 5 , FPC anti-scratch structure for display module, including:

[0036] An iron frame 1 having a bonding area 3 for bonding with the FPC;

[0037] The flared portion 2 is arranged in the fitting area 3;

[0038] After the FPC is bonded to the bonding area 3, the flared portion 2 can guide the FPC to bend away from the bonding area 3 when the FPC is bent (ie, the iron frame 1 is expanded a small distance to avoid scratching or squeezing the FPC bending position).

[0039] The utility model can expand the connection between the FPC and the bonding area 3 by a small section through the flared portion 2. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is large, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the bent part of the FPC.

[0040] That is, compared with the prior art, a small expansion of the iron frame 1 can avoid scratches or squeezing of the FPC bending part, ensure safe and stable module assembly, and reduce defective rates and customer complaints (that is, the probability of scratches between the edge of the FPC and the iron frame is reduced to a certain extent).

[0041] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] Example 1

[0045] Please refer to Figure 2-3 , FPC anti-scratch structure for display module, including:

[0046] An iron frame 1, wherein the iron frame 1 has a bonding area 3 for bonding with the FPC;

[0047] The flared portion 2 is arranged in the bonding area 3;

[0048] When the FPC is bonded to the bonding area 3, the flared portion 2 can guide the FPC to bend away from the bonding area 3 when the FPC is bent (ie, the iron frame 1 expands a small section to avoid scratching or squeezing the FPC bending position).

[0049] The utility model can expand the connection between the FPC and the bonding area 3 by a small section through the flared portion 2. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is large, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the FPC bending position. The flared portion 2 includes a main body section 4, which is connected to the bonding area 3 of the iron frame 1, and avoidance areas are formed at both ends of the main body section 4.

[0050] In some specific embodiments, after the avoidance zone is formed on the main body segment 4, the structural projection of the main body segment 4 is trapezoidal, T-shaped or quadrilateral.

[0051] Avoidance area can be referred to Figure 2 Indicated at A in the middle.

[0052] When it is in a T shape, it means that the avoidance area formed at both ends of the main section 4 is concave inward, so that the distance between the FPC bending position and the iron frame reaches the maximum (relative to the three projection structures here), but this operation requires that the iron frame cannot be punched too much during punching to avoid a weak connection between the T and the iron frame 1.

[0053] A trapezoid or a quadrilateral can increase the distance between the FPC bending position and the iron frame.

[0054] Example 2

[0055] The FPC anti-scratch structure for the display module provided in Example 1 is further optimized, referring to Figure 4 , FPC anti-scratch structure for display module, including:

[0056] An iron frame 1, wherein the iron frame 1 has a bonding area 3 for bonding with the FPC;

[0057] The flared portion 2 is arranged in the bonding area 3;

[0058] When the FPC is bonded to the bonding area 3, the flared portion 2 can guide the FPC to bend away from the bonding area 3 when the FPC is bent (ie, the iron frame 1 expands a small section to avoid scratching or squeezing the FPC bending position).

[0059] The utility model can expand the connection between the FPC and the bonding area 3 outward by a small section through the flaring portion 2. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is large, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the bent part of the FPC. The flaring portion 2 includes a main body section 4 connected to the bonding area 3 of the iron frame 1, and the edge of the main body section 4 is provided with an expansion edge 5, and the expansion edge 5 is opposite to the bonding position of the FPC in the bonding area 3, and the edge of the main body section 4 is provided with a protective groove 6.

[0060] In some specific implementations, two protection grooves 6 are provided and are respectively located at two ends of the extended edge 5 .

[0061] In some specific embodiments, the depth of the protection groove 6 is at least equal to the width of the extended edge 5. This is set so that the protection groove 6 can fully avoid contact with the bent FPC.

[0062] In some specific embodiments, sloped edges 7 are provided at both ends of the notch of the protection groove 6 to increase the distance between the FPC and the edge of the notch of the protection groove 6, that is, to prevent the FPC from contacting and scratching the edge of the notch of the protection groove 6.

[0063] Since the avoidance zone only provides a smaller spacing, there is still a risk of scratching if the FPC is bent significantly. Therefore, to address this problem, another flared portion 2 is provided, in which the extended edge 5 can be selected as an insulating strip, so that the distance between the FPC and the main section 4 is increased after the FPC is bent. At the same time, due to the setting of the protective groove 6, when the bent FPC shakes left and right, the two protective grooves 6 located at both ends of the extended edge 5 can play a certain preventive role.

[0064] The following is a detailed description of the second embodiment:

[0065] The extended edge 5 further increases the distance between the FPC and the main section 4 after the FPC is bent. When the FPC shakes left and right, causing the bending area to move toward a certain protective groove 6, the FPC is easily scratched against the main section 4 because the main section 4 was originally there. However, the protective groove 6 is now provided, so that the scratching area is avoided and the scratching probability is reduced. At the same time, the slope edge 7 is provided, which further increases the distance between the FPC and the edge of the notch of the protective groove 6, so that the probability of the notch edge of the protective groove 6 scratching the FPC is also reduced.

[0066] Example 3

[0067] The FPC anti-scratch structure for the display module provided in Example 1 or 2 is further optimized, referring to Figure 5 , FPC anti-scratch structure for display module, including:

[0068] An iron frame 1, wherein the iron frame 1 has a bonding area 3 for bonding with the FPC;

[0069] The flared portion 2 is arranged in the bonding area 3;

[0070] After the FPC is bonded to the bonding area 3, the flared portion 2 can guide the FPC to bend away from the bonding area 3 when the FPC is bent (ie, the iron frame 1 is expanded a small distance to avoid scratching or squeezing the FPC bending position).

[0071] The utility model can expand the connection between the FPC and the bonding area 3 outward by a small section through the flaring portion 2. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is large, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the FPC bending position. The flaring portion 2 includes a main body section 4 connected to the bonding area 3 of the iron frame 1, and a supporting member 8 is provided at the edge of the main body section 4. The supporting member 8 is connected to the surface of the FPC, and flexible clamps 10 connected to the main body section 4 are provided on both sides of the supporting member 8. The two flexible clamps 10 can be clamped on the two side surfaces of the FPC respectively.

[0072] In some specific embodiments, the surface of the flexible clamping strip 10 is provided with a bending groove 9. Such a configuration is to enable the flexible clamping strip 10 to bend.

[0073] In some specific embodiments, the length of the supporting member 8 is not less than the length of the connecting area between the FPC and the bonding area 3.

[0074] In the figure, B and C represent an insulating strip and a connecting strip respectively, and the insulating strip and the connecting strip are adhered to a certain side surface of the fpc to form a supporting member 8. The function of the supporting member 8 is to make the bending area of ​​the fpc farther away from the main section 4, and the flexible clamp 10 can be clamped on the outside of the supporting member 8 and the fpc.

[0075] The working principle of the third embodiment is:

[0076] Specifically, when the FPC bends, due to the presence of the insulating strip and the connecting strip, it will only bend from the connecting strip. At the same time, the flexible clamp 10 will bend, and the bending point is in the bending groove 9. Through the guidance of these two bends, the bending area of ​​the FPC can be limited, reducing the chance of scratches. At the same time, the flexible clamp 10 clamps the FPC, reducing the chance of the FPC shaking, thereby further reducing the chance of scratches.

[0077] Opening a window in the bending area of ​​the FPC body is difficult in actual operation (for example, the accuracy of the window opening is prone to occur, which affects the yield of the FPC). This is also one of the problems in the prior art, and the above three embodiments do not have high requirements for accuracy.

[0078] The use process of the FPC anti-scratch structure for the display module provided by the utility model is as follows: the utility model can expand the connection between the FPC and the bonding area 3 by a small section through the flared portion 2. When the FPC is bent or squeezed, the distance between the edge of the FPC and the iron frame is larger, and the edge of the FPC is not easy to abut and scratch the iron frame, which can avoid scratches or squeezing of the FPC bending part.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A FPC anti-scratch structure for a display module, characterized in that: include: An iron frame (1) having a bonding area (3) for bonding with the FPC; The flared portion (2) is arranged in the fitting area (3); When the FPC is bonded to the bonding area (3), the flared portion (2) can guide the FPC to bend away from the bonding area (3) when the FPC is bent.

2. The FPC anti-scratch structure for display module according to claim 1, characterized in that: The flared portion (2) comprises a main body section (4), the main body section (4) being connected to the fitting area (3) of the iron frame (1), and avoidance areas being formed at both ends of the main body section (4).

3. The FPC anti-scratch structure for display module according to claim 2, characterized in that: After the avoidance zone is formed on the main body section (4), the structural projection of the main body section (4) is trapezoidal, T-shaped or quadrilateral.

4. The FPC anti-scratch structure for display module according to claim 1, characterized in that: The flared portion (2) comprises a main body section (4) connected to the bonding area (3) of the iron frame (1); an extension edge (5) is provided at the edge of the main body section (4); the extension edge (5) is directly opposite to the bonding position of the bonding area (3) with the FPC; and a protective groove (6) is provided at the edge of the main body section (4).

5. The FPC anti-scratch structure for display module according to claim 4, characterized in that: Two protective grooves (6) are provided and are respectively located at two ends of the extended edge (5).

6. The FPC anti-scratch structure for display module according to claim 5, characterized in that: The depth of the protection groove (6) is at least equal to the width of the expansion edge (5).

7. The FPC anti-scratch structure for display module according to claim 6, characterized in that: Both ends of the notch of the protection groove (6) are provided with sloped edges (7) to increase the distance between the FPC and the notch edge of the protection groove (6).

8. The FPC anti-scratch structure for display module according to claim 1, characterized in that: The flared portion (2) comprises a main body section (4) connected to the fitting area (3) of the iron frame (1); a supporting piece (8) is provided at the edge of the main body section (4); the supporting piece (8) is connected to the surface of the FPC; flexible clamping strips (10) connected to the main body section (4) are provided on both sides of the supporting piece (8); the two flexible clamping strips (10) can be clamped on the two side surfaces of the FPC respectively.

9. The FPC anti-scratch structure for display module according to claim 8, characterized in that: The surface of the flexible clamping strip (10) is provided with a bending groove (9).

10. The FPC anti-scratch structure for display module according to claim 9, characterized in that: The length of the supporting member (8) is not less than the length of the connection area between the FPC and the bonding area (3).

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