FPC bending positioning structure

Abstract

The utility model discloses an FPC (Flexible Printed Circuit) bending positioning structure, which relates to the field of display modules, and comprises a backlight module, a main screen FPC and a backlight FPC, the main screen FPC is electrically connected with the backlight FPC, the backlight module is provided with a wiring component, the backlight FPC is electrically connected with the wiring component after being turned over, the backlight FPC is provided with a positioning hole, and the main screen FPC is electrically connected with the backlight FPC through the positioning hole. A positioning column is arranged on one side face, located on the wiring component, of the backlight module, and the positioning hole and the positioning column are connected in an aligned and inserted mode. According to the FPC bending positioning structure provided by the utility model, the positioning columns are arranged on the backlight module and the positioning holes are formed in the backlight FPC, and after the backlight FPC is bent, the positioning holes are directly connected with the positioning columns in an inserted manner, so that the purpose of quickly positioning the backlight FPC is achieved, meanwhile, deviation can be avoided, the alignment accuracy is improved, the production efficiency of products is further improved, and the production cost is reduced. Meanwhile, when the backlight module is pulled by external force, the backlight FPC can be prevented from falling off, and the connection stability of the backlight FPC is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to an FPC bending positioning structure. Background Art

[0002] When the backlight module is pinned out of a hardware PCB board, the FPC on the main screen module needs to be folded back onto the backlight iron frame and pasted and fixed. Patent application number 202321056961.5 discloses a display module that can be folded and aligned by a machine, which includes a backlight module and a main screen FPC. The backlight module is connected to the main screen FPC, and at least two backlight cross marks are set on the backlight module, and at least two main screen FPC cross marks are set on the main screen FPC. In this structural design, the backlight cross mark and the main screen FPC cross mark are set to facilitate the folding of the robot and ensure the alignment accuracy. For example, patent application No. 2013106332237 discloses a backlight FPC bending positioning structure, which includes an iron frame and an FPC, wherein the FPC is bent and contacts the iron frame through a solder pad; corresponding positioning holes are respectively provided on the iron frame and the FPC, and the positioning hole on the FPC is larger than the positioning hole on the iron frame; the positioning hole on the iron frame is close to the bottom of the iron frame and is located on the same straight line as the exhaust hole on the iron frame; the iron frame is engraved with a stamped line that is perpendicular to the outer edge of the FPC bending point; in this solution, the FPC is positioned by point-to-point alignment of the positioning holes on the iron frame and the FPC.

[0003] In the above two FPC alignment structures, both use a planar positioning structure of alignment lines or positioning holes. During assembly, mechanical auxiliary operation is required, and the alignment accuracy is prone to deviation, and fast and accurate alignment cannot be achieved. Therefore, the utility model discloses an FPC bending positioning structure to solve the above problems. Utility Model Content

[0004] Based on this, it is necessary to provide an FPC bending positioning structure to address the above-mentioned technical problems. By setting positioning posts on the backlight module and positioning holes on the backlight FPC, after the backlight FPC is bent, the positioning holes are directly plugged into the positioning posts to achieve the purpose of quickly positioning the backlight FPC. At the same time, it can also avoid deviations and improve the positioning accuracy. At the same time, when the backlight module is pulled by external force, it can prevent the backlight FPC from falling off and improve the connection stability of the backlight FPC.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An FPC bending positioning structure comprises a backlight module, a main screen FPC and a backlight FPC, wherein the main screen FPC is electrically connected to the backlight FPC, the backlight module is provided with wiring components, the backlight FPC is electrically connected to the wiring components after being folded, the backlight FPC is provided with positioning holes, a positioning column is provided on one side of the backlight module located at the wiring components, and the positioning hole is aligned and plugged with the positioning column.

[0007] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, two of the positioning posts and two of the positioning holes are provided.

[0008] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, a reinforcement layer is provided at the positioning hole of the backlight FPC.

[0009] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, the reinforcement layer is a copper layer.

[0010] As a preferred implementation of the FPC bending positioning structure provided by the utility model, the copper layer is a ring structure surrounding the positioning hole or a rectangular structure covering the peripheral area of ​​the positioning hole.

[0011] As a preferred embodiment of the FPC bending and positioning structure provided by the utility model, it also includes an outer iron frame, in which a display module is arranged, and the display module includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer stacked in sequence from bottom to top.

[0012] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, a driver IC is arranged on the lower substrate, and the driver IC is connected to the main screen FPC.

[0013] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, a protection layer covering the driver IC is provided on the lower substrate.

[0014] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, a protective layer is provided on the end surface of the lower substrate, and the backlight FPC is bonded to the protective layer after being bent.

[0015] As a preferred implementation of the FPC bending and positioning structure provided by the utility model, an annular groove is provided on the positioning column, and a rubber ring is embedded in the annular groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The FPC bending positioning structure provided by the utility model has a positioning post on the backlight module and a positioning hole on the backlight FPC. After the backlight FPC is bent, the positioning hole is directly plugged into the positioning post, so as to achieve the purpose of quickly positioning the backlight FPC and avoid deviation, thereby improving the positioning accuracy and further improving the production efficiency of the product. At the same time, when the backlight module is pulled by external force, the backlight FPC can be prevented from falling off, thereby improving the connection stability of the backlight FPC.

[0018] The FPC bending positioning structure provided by the utility model is provided with a reinforcement layer on the backlight FPC, thereby enhancing the tensile strength of the positioning holes and preventing the risk of tearing.

[0019] The utility model provides an FPC bending positioning structure, in which a rubber ring is arranged on the positioning post. After the positioning post passes through the positioning hole, the rubber ring abuts against the backlight FPC to prevent the backlight FPC from falling off the positioning post, thereby further improving the connection stability of the backlight FPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the FPC bending and positioning structure provided by the utility model;

[0022] Figure 2 The FPC bending positioning structure provided by the utility model Figure 1 Schematic diagram of the structure after the middle backlight FPC is folded;

[0023] Figure 3 The FPC bending positioning structure provided by the utility model Figure 2 A schematic plan view of another reinforcement layer structure;

[0024] Figure 4 A side schematic diagram of the FPC bending and positioning structure provided by the utility model;

[0025] Figure 5 The present invention is a schematic diagram of the positioning column structure in the FPC bending positioning structure provided by the present invention.

[0026] The markings in the figure are as follows:

[0027] 1. Backlight module; 2. Main screen FPC; 3. Backlight FPC; 4. Wiring components; 5. Positioning holes; 6. Positioning columns; 7. Reinforcement layer; 8. Annular groove; 9. Rubber ring; 10. Outer iron frame; 11. Lower polarizer; 12. Lower substrate; 13. Upper substrate; 14. Upper polarizer; 15. Driver IC; 16. Protective layer; 17. Shielding layer. DETAILED DESCRIPTION

[0028] 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.

[0029] As described in the background art, the existing FPC alignment structures all use a planar positioning structure of alignment lines or positioning holes. During assembly, mechanical assistance is required, and alignment accuracy is prone to deviation, making it impossible to achieve fast and accurate alignment.

[0030] In order to solve this technical problem, the utility model provides an FPC bending positioning structure, which is applied to the field of display modules.

[0031] Specifically, please refer to Figure 1-4 The FPC bending positioning structure specifically includes a backlight module 1, a main screen FPC2 and a backlight FPC3. The main screen FPC2 is electrically connected to the backlight FPC3. A wiring component 4 is provided on the backlight module 1. The backlight FPC3 is electrically connected to the wiring component 4 after being folded. A positioning hole 5 is provided on the backlight FPC3. A positioning column 6 is provided on one side of the backlight module 1 located on the wiring component 4. The positioning hole 5 is aligned with the positioning column 6 and plugged in.

[0032] The FPC bending positioning structure provided by the utility model has a positioning post 6 set on the backlight module 1 and a positioning hole 5 set on the backlight FPC3. After the backlight FPC3 is bent, the positioning hole 5 is directly plugged into the positioning post 6, so as to achieve the purpose of quickly positioning the backlight FPC3 and avoid deviation, thereby improving the positioning accuracy and further improving the product production efficiency. At the same time, when the backlight module 1 is pulled by external force, the backlight FPC3 can be prevented from falling off, thereby improving the connection stability of the backlight FPC3.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Example 1

[0037] Please refer to Figure 1-4 , provides an FPC bending positioning structure, which includes a backlight module 1, a main screen FPC2 and a backlight FPC3, the main screen FPC2 is electrically connected to the backlight FPC3, a wiring component 4 is arranged on the backlight module 1, and the backlight FPC3 is electrically connected to the wiring component 4 after being folded, a positioning hole 5 is arranged on the backlight FPC3, and the positioning hole 5 is set to two, and a positioning column 6 is arranged on one side of the backlight module 1 located at the wiring component 4, and the positioning column 6 is arranged in the area where the backlight FPC3 fits the backlight module 1, and the positioning column 6 is also set to two, and at the same time, the size of the positioning column 6 is not larger than the size of the positioning hole 5, and the positioning hole 5 is aligned with the positioning column 6. The shape of the positioning hole 5 is consistent with the shape of the positioning column 6, which can be rectangular or circular. In this example, a circular shape is adopted.

[0038] The backlight module 1 is installed on one side of the outer iron frame 10, and a display module is arranged in the outer iron frame 10. The display module includes a lower polarizer 11, a lower substrate 12, an upper substrate 13 and an upper polarizer 14 stacked in sequence from bottom to top. The lower polarizer 11 and the upper polarizer 14 are of the same size. One end of the lower substrate 12 extends out of the same end of the upper substrate 13 to form a single-layer structure, and a driver IC 15 is arranged on the single-layer structure. The driver IC 15 is connected to the main screen FPC2. At the same time, a protective layer 16 covering the driver IC 15 is laid on the single-layer structure. The protective layer 16 is silicone glue, and a protective layer 17 is arranged on the end face of the lower substrate 12. The backlight FPC3 is bent and fits with the protective layer 17. The protective layer 17 is a silicone layer for protecting the backlight FPC3.

[0039] Example 2

[0040] The FPC bending and positioning structure provided in Example 1 is further optimized. Specifically, Figure 1-3As shown, the backlight FPC3 is provided with a reinforcement layer 7 at the positioning hole 5, and the reinforcement layer 7 increases the strength of the backlight FPC3 to avoid the risk of tearing after the positioning hole 5 is plugged with the positioning column 6. Specifically, the reinforcement layer 7 is a copper layer, and the copper layer can also be a copper sheet or a copper-plated film. In terms of shape and structure, the copper layer is an annular structure surrounding the positioning hole 5, and can also be a rectangular structure covering the surrounding area of ​​the positioning hole 5. The copper layer with a rectangular structure further enhances the tensile strength of the positioning hole 5 and improves the strength of the positioning hole 5.

[0041] Through the above structural design, the reinforcement layer 7 is arranged on the backlight FPC 3 to enhance the tensile strength of the positioning hole 5 and prevent the risk of tearing.

[0042] Example 3

[0043] The FPC bending and positioning structure provided in Example 2 is further optimized. Specifically, Figure 5 As shown, an annular groove 8 is provided on the positioning column 6, and a rubber ring 9 is embedded in the annular groove 8. The outer diameter of the rubber ring 9 is larger than the diameter of the positioning hole 5. After the positioning column 6 is inserted into the positioning hole 5, the rubber ring 9 fits with the upper surface of the backlight FPC 3, and the backlight FPC 3 is crimped and fixed by the rubber ring 9.

[0044] Through the above structural design, the rubber ring 9 is arranged on the positioning column 6. After the positioning column 6 passes through the positioning hole 5, the rubber ring 9 abuts against the backlight FPC 3 to prevent the backlight FPC 3 from falling off from the positioning column 6, further improving the connection stability of the backlight FPC 3.

[0045] The working principle of the FPC bending positioning structure provided by the utility model is as follows: by setting a positioning column 6 on the backlight module 1 and a positioning hole 5 on the backlight FPC3, after the backlight FPC3 is bent, the positioning hole 5 is directly plugged into the positioning column 6, so as to achieve the purpose of quickly positioning the backlight FPC3, and at the same time, it can also avoid deviation, improve the positioning accuracy, and thus improve the product production efficiency; at the same time, when the backlight module 1 is pulled by external force, it can avoid the backlight FPC3 from falling off, and improve the connection stability of the backlight FPC3; a reinforcement layer 7 is set on the backlight FPC3, and the tensile strength of the positioning hole 5 is enhanced to prevent the risk of tearing; a rubber ring 9 is set on the positioning column 6, and after the positioning column 6 passes through the positioning hole 5, the rubber ring 9 abuts against the backlight FPC3 to avoid the backlight FPC3 from falling off from the positioning column 6, and further improve the connection stability of the backlight FPC3.

[0046] 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.

[0047] 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. An FPC bending and positioning structure, characterized in that: It includes a backlight module, a main screen FPC and a backlight FPC. The main screen FPC is electrically connected to the backlight FPC. The backlight module is provided with wiring components. The backlight FPC is electrically connected to the wiring components after being folded. The backlight FPC is provided with positioning holes. A positioning column is provided on one side of the backlight module located on the wiring component. The positioning hole is aligned with the positioning column and plugged in.

2. The FPC bending and positioning structure according to claim 1, characterized in that: The number of the positioning posts and the number of the positioning holes are both two.

3. The FPC bending and positioning structure according to claim 1, characterized in that: The backlight FPC is provided with a reinforcement layer at the positioning hole.

4. The FPC bending and positioning structure according to claim 3, characterized in that: The reinforcement layer is a copper layer.

5. The FPC bending and positioning structure according to claim 4, characterized in that: The copper layer is a ring structure surrounding the positioning hole or a rectangular structure covering the peripheral area of ​​the positioning hole.

6. The FPC bending and positioning structure according to claim 1, characterized in that: It also includes an outer iron frame, in which a display module is arranged. The display module includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer stacked in sequence from bottom to top.

7. The FPC bending and positioning structure according to claim 6, characterized in that: A driving IC is arranged on the lower substrate, and the driving IC is connected to the main screen FPC.

8. The FPC bending and positioning structure according to claim 7, characterized in that: A protection layer covering the driver IC is arranged on the lower substrate.

9. The FPC bending and positioning structure according to claim 6, characterized in that: The end surface of the lower substrate is provided with a protective layer, and the backlight FPC is bent and adhered to the protective layer.

10. The FPC bending and positioning structure according to claim 1, characterized in that: The positioning column is provided with an annular groove, and a rubber ring is embedded in the annular groove.

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