LCD (Liquid Crystal Display) module with FPC (Flexible Printed Circuit) installation fool-proof structure

Abstract

The utility model discloses an LCD module with an FPC installation fool-proof structure, which comprises a backlight iron stand and an FPC board body, the FPC board body is connected with the backlight iron stand in a bonding way, a first positioning column and a second positioning column are arranged at the middle part of the back surface of the backlight iron stand, the FPC board body comprises an FPC main body, a punching area is arranged on the FPC main body, and the punching area is arranged on the back surface of the backlight iron stand. The punching area is provided with a first positioning hole and a second positioning hole, the first positioning hole is matched with the first positioning column, and the second positioning hole is matched with the second positioning column. When the FPC board body is installed, a user directly aligns the first positioning hole to the first positioning column, aligns the second positioning hole to the second positioning column, installs the FPC board body on the backlight iron stand, and adheres and connects the FPC board body and the backlight iron stand through a double-sided adhesive tape. Due to the existence of the first positioning column and the second positioning column, the fool-proof effect is good, the accurate positioning of the FPC board body is realized, and the tensioning force of the FPC and the TFT can be stabilized to a great extent.

Description

Technical Field

[0001] The utility model relates to an LCD module, more specifically, to an LCD module with an FPC installation fool-proof structure. Background Art

[0002] LCD modules are usually composed of a cover plate + OCA + TFT + backlight. The cover plate is first bonded to the TFT through OCA and then assembled with the backlight. The peripheral circuit of the TFT is usually on its FPC. The FPC is usually bonded together on both sides through a thin layer on the backlight iron frame. In order to limit the position of the FPC bonded to the backlight, some cross marks are usually marked on the backlight iron frame for identification by production line operators. As the number of production samples increases, manual bonding will cause the FPC to have a great risk of deviating from the cross mark. The amount of FPC offset will directly affect the mura of the TFT (if the FPC is bonded beyond the cross mark, it is equivalent to an increase in the tension between the FPC and the TFT, resulting in tension on the glass at the FPC of the TFT, forming mura, that is, the "cloud spot" effect).

[0003] Chinese utility model patent document CN216956578U discloses an FPC structure with foolproofing function, including: an FPC group, the FPC group is used to bind to the same LCD glass, the FPC group includes a certain number of FPC bodies, the certain number is greater than or equal to 2, each of the FPC bodies is respectively formed with a marking group, and the shapes of the marking groups of different FPC bodies are different. The marking group includes a first mark and a second mark, a bonding area is formed on the FPC body, a gold finger group is formed on the bonding area, the gold finger group includes a number of side-by-side gold fingers, and the first mark and the second mark are respectively arranged on both sides of the gold finger group. The shapes of the first mark and the second mark in the same FPC body are different. The certain number is 2. A mark is formed on the LCD glass to align with the marking group of the FPC body. Obviously, the FPC structure can not only enable operators to intuitively identify different FPC bodies through the marking groups by setting different marking groups on different FPC bodies, and avoid misplacement of the FPC bodies during bonding, but also can rely on the identification marking groups to avoid the situation of being bonded after being misplaced when bonding by the bonding machine, thus having a double foolproofing function. However, this structure cannot solve the existing FPC positioning problem. Utility Model Content

[0004] Based on this, it is necessary to provide an LCD module with an FPC installation foolproof structure for the above technical problems. The LCD module with an FPC installation foolproof structure comprises a backlight iron frame and an FPC board, the FPC board is bonded and connected to the backlight iron frame, a first positioning column and a second positioning column are provided in the middle of the back of the backlight iron frame, the FPC board comprises an FPC body, a punching area is provided on the FPC body, a first positioning hole and a second positioning hole are provided on the punching area, the first positioning hole matches the first positioning column, and the second positioning hole matches the second positioning column. When installing the FPC board, the user directly aligns the first positioning hole with the first positioning column, and aligns the second positioning hole with the second positioning column, installs the FPC board on the backlight iron frame, and bonded and connected the FPC board to the backlight iron frame by double-sided adhesive. Due to the presence of the first positioning column and the second positioning column, the foolproof effect is good, and the precise positioning of the FPC board is achieved, which can greatly stabilize the tension of the FPC and TFT, thereby stabilizing the "cloud spot" effect. At the same time, since the GROUND area of ​​the FPC board is connected to the first positioning column and the second positioning column, which is equivalent to the ground of the TFT circuit principle and the ground of the backlight being connected, the static electricity received by the TFT can be effectively transferred to the backlight iron frame, further improving the stability of the LCD module.

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

[0006] An LCD module with an FPC installation fool-proofing structure, characterized in that the LCD module with the FPC installation fool-proofing structure comprises a backlight iron frame and an FPC board, the FPC board is adhesively connected to the backlight iron frame, a first positioning column and a second positioning column are provided in the middle of the back side of the backlight iron frame, the FPC board comprises an FPC body, a punching area is provided on the FPC body, a first positioning hole and a second positioning hole are provided on the punching area, the first positioning hole cooperates with the first positioning column, and the second positioning hole cooperates with the second positioning column.

[0007] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the FPC board is covered with aluminum foil Mylar.

[0008] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the aluminum foil Mylar is black.

[0009] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the punching area is a component-free area.

[0010] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the punching area is a GROUND area.

[0011] As a preferred embodiment of the LCD module with FPC installation fool-proof structure provided by the utility model, an iron column is provided at the back corner of the backlight iron frame, the height of the first positioning column is the same as that of the second positioning column, and the height of the first positioning column is less than the preset positioning height of the iron column.

[0012] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the positioning height is 3 mm to 6 mm.

[0013] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the positioning height is 5 mm.

[0014] As a preferred embodiment of the LCD module with FPC installation foolproof structure provided by the utility model, a first positioning triangle is provided on the side of the first positioning hole, and a second positioning triangle is provided on the side of the second positioning hole.

[0015] As a preferred implementation of the LCD module with FPC installation foolproof structure provided by the utility model, the first positioning triangle and the second positioning triangle are oriented in the same direction.

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

[0017] The utility model provides an LCD module with an FPC installation fool-proof structure. When installing the FPC board, the user directly aligns the first positioning hole with the first positioning column, and aligns the second positioning hole with the second positioning column, installs the FPC board on the backlight iron frame, and uses double-sided adhesive to bond the FPC board to the backlight iron frame. Due to the presence of the first positioning column and the second positioning column, the fool-proof effect is good, and the precise positioning of the FPC board is achieved, which can stabilize the tension of the FPC and TFT to a great extent, thereby stabilizing the "cloud spot" effect. At the same time, since the GROUND area of ​​the FPC board is connected to the first positioning column and the second positioning column, which is equivalent to the ground of the circuit principle of the TFT being connected to the ground of the backlight, the static electricity received by the TFT can be effectively transmitted to the backlight iron frame, further improving the stability of the LCD module.

[0018] In addition, the first positioning hole may be provided with a first positioning triangle on its side, and the second positioning hole may be provided with a second positioning triangle on its side. The first positioning triangle and the second positioning triangle on the first positioning hole can effectively indicate the installation direction, further facilitating the user to install the FPC board.

[0019] In addition, the first positioning triangle and the second positioning triangle can be oriented in the same direction. Since the first positioning triangle and the second positioning triangle are oriented in the same direction, the orientation of the FPC board can be accurately indicated, further improving the foolproof measure. 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 structure of the backlight iron frame of the LCD module with the FPC installation foolproof structure of the utility model;

[0022] Figure 2 This is a structural schematic diagram of the FPC board of the LCD module with the FPC installation foolproof structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of an LCD module with an FPC installation foolproof structure of the utility model;

[0024] Figure 4 It is a structural schematic diagram of another embodiment of the FPC board of the LCD module with the FPC installation foolproof structure of the utility model;

[0025] Figure 5 for Figure 4 A detailed enlarged schematic diagram of area A of the structural schematic diagram of the FPC board of the LCD module with the FPC mounting foolproof structure;

[0026] Figure 6 for Figure 4 A detailed enlarged schematic diagram of area B of the structural schematic diagram of the FPC board of the LCD module with the FPC mounting foolproof structure;

[0027] The markings in the figure are as follows: 1. Backlight iron frame; 11. First positioning column; 12. Second positioning column; 13. Iron column; 2. FPC board; 21. FPC body; 22. Punching area; 23. First positioning hole; 231. First positioning triangle; 24. Second positioning hole; 241. Second positioning triangle; 25. Aluminum foil Mylar. 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 technology, in the prior art, for LCD modules, LCD modules are usually composed of a cover plate + OCA + TFT + backlight. The cover plate is first bonded to the TFT through OCA and then assembled with the backlight. The peripheral circuit of the TFT is usually on its FPC. The FPC is usually bonded together on both sides through a thin layer on the backlight iron frame. In order to limit the position of the FPC bonded to the backlight, some cross marks are usually marked on the backlight iron frame for identification by production line operators. As the number of production samples increases, manual bonding will cause the FPC to have a great risk of deviating from the cross mark, and the amount of FPC offset will directly affect the mura of the TFT.

[0030] In order to solve this technical problem, the utility model provides an LCD module with an FPC installation foolproof structure, comprising a backlight iron frame 1 and an FPC board 2, wherein the FPC board 2 is adhesively connected to the backlight iron frame 1. A first positioning column 11 and a second positioning column 12 are provided in the middle of the back of the backlight iron frame 1. The FPC board 2 comprises an FPC body 21, wherein a punching area 22 is provided on the FPC body 21, wherein a first positioning hole 23 and a second positioning hole 24 are provided on the punching area 22, wherein the first positioning hole 23 cooperates with the first positioning column 11, and the second positioning hole 24 cooperates with the second positioning column 12. The FPC board 2 is covered with an aluminum foil Mylar 25. In addition, the aluminum foil Mylar 25 is black.

[0031] Through the above structural design, due to the presence of the first positioning column 11 and the second positioning column 12, the foolproof effect is good, the precise positioning of the FPC board 2 is achieved, and the tension of the FPC and the TFT can be stabilized to a great extent, thereby stabilizing the "cloud spot" effect. At the same time, since the GROUND area of ​​the FPC board 2 is connected to the first positioning column 11 and the second positioning column 12, which is equivalent to the ground of the circuit principle of the TFT being connected to the ground of the backlight, the static electricity received by the TFT can be effectively transmitted to the backlight iron frame 1, further improving the stability of the LCD module.

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0033] 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.

[0034] 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.

[0035] Example 1

[0036] like Figure 1 As shown, the LCD module with the FPC installation foolproof structure comprises a backlight iron frame 1 and an FPC board 2 , and the FPC board 2 is bonded and connected to the backlight iron frame 1 .

[0037] A first positioning post 11 and a second positioning post 12 are provided at the middle of the back side of the backlight iron frame 1 .

[0038] like Figure 2 As shown, the FPC board 2 includes an FPC body 21, a punching area 22 is provided on the FPC body 21, a first positioning hole 23 and a second positioning hole 24 are provided on the punching area 22, the first positioning hole 23 cooperates with the first positioning column 11, and the second positioning hole 24 cooperates with the second positioning column 12.

[0039] It should be noted that the FPC board 2 is covered with an aluminum foil Mylar 25. In addition, the aluminum foil Mylar 25 is black.

[0040] In addition, the perforated area 22 is a device-free area or a GROUND area. In a limited manner, the perforated area 22 is a GROUND area.

[0041] An iron column 13 is disposed at the back corner of the backlight iron frame 1 . The height of the first positioning column 11 is the same as that of the second positioning column 12 . The height of the first positioning column 11 is smaller than the preset positioning height of the iron column 13 .

[0042] It should be noted that the positioning height is 3 mm to 6 mm. Preferably, the positioning height is 5 mm.

[0043] The working mode of this embodiment is described below.

[0044] When installing the FPC board 2, the user directly aligns the first positioning hole 23 with the first positioning column 11, and aligns the second positioning hole 24 with the second positioning column 12, installs the FPC board 2 on the backlight iron frame 1, and uses double-sided adhesive to bond the FPC board 2 to the backlight iron frame 1.

[0045] Due to the existence of the first positioning column 11 and the second positioning column 12, the foolproof effect is good, and the precise positioning of the FPC board 2 is achieved, which can stabilize the tension of the FPC and the TFT to a great extent, thereby stabilizing the "cloud spot" effect. At the same time, since the GROUND area of ​​the FPC board 2 is connected to the first positioning column 11 and the second positioning column 12, which is equivalent to the ground of the circuit principle of the TFT and the ground of the backlight being connected, the static electricity received by the TFT can be effectively transmitted to the backlight iron frame 1, further improving the stability of the LCD module.

[0046] Example 2

[0047] like Figure 4 , Figure 5 and Figure 6 As shown, the LCD module with the FPC installation foolproof structure provided in Example 1 is further optimized. Specifically, a first positioning triangle 231 is provided on the side of the first positioning hole 23 , and a second positioning triangle 241 is provided on the side of the second positioning hole 24 .

[0048] The working mode of this embodiment is described below.

[0049] The first positioning triangle 231 and the second positioning triangle 241 on the first positioning hole 23 can effectively indicate the installation direction, further facilitating the user to install the FPC board 2 .

[0050] Example 3

[0051] The LCD module with the FPC installation foolproof structure provided in Example 1 or 2 is further optimized. Specifically, the first positioning triangle 231 and the second positioning triangle 241 are oriented in the same direction.

[0052] The working mode of this embodiment is described below.

[0053] Since the first positioning triangle 231 and the second positioning triangle 241 are oriented in the same direction, the orientation of the FPC board 2 can be accurately indicated, further improving foolproof measures.

[0054] In addition, the transistor is a field effect transistor or a triode. When these crystals are field effect transistors, they can be N-type transistors (such as metal-oxide-semiconductor field effect transistors (N-Metal-Oxide-Semiconductor, NMOS)), or P-type metal-oxide-semiconductor field effect transistors, complementary metal-oxide-semiconductor field effect transistors, and other circuit structure types.

[0055] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0056] 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.

[0057] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application 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 present application more thorough and comprehensive. Although the present application 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 specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. An LCD module with an FPC mounting foolproof structure, characterized in that: The LCD module with the FPC installation foolproof structure comprises a backlight iron frame (1) and an FPC board (2), wherein the FPC board (2) is bonded to the backlight iron frame (1), a first positioning column (11) and a second positioning column (12) are provided at the middle of the back side of the backlight iron frame (1), the FPC board (2) comprises an FPC body (21), a punching area (22) is provided on the FPC body (21), a first positioning hole (23) and a second positioning hole (24) are provided on the punching area (22), the first positioning hole (23) matches with the first positioning column (11), and the second positioning hole (24) matches with the second positioning column (12).

2. The LCD module with FPC mounting foolproof structure according to claim 1, characterized in that: The FPC board (2) is covered with aluminum foil Mylar (25).

3. The LCD module with FPC mounting foolproof structure according to claim 2, characterized in that: The aluminum foil Mylar (25) is black.

4. The LCD module with FPC mounting foolproof structure according to claim 1, characterized in that: The punching area (22) is a component-free area.

5. The LCD module with FPC mounting foolproof structure according to claim 1, characterized in that: The perforated area (22) is a GROUND area.

6. The LCD module with FPC mounting foolproof structure according to claim 1, characterized in that: An iron column (13) is provided at the back corner of the backlight iron frame (1), the height of the first positioning column (11) is the same as that of the second positioning column (12), and the height of the first positioning column (11) is less than a preset positioning height of the iron column (13).

7. The LCD module with FPC mounting foolproof structure according to claim 6, characterized in that: The positioning height is 3 mm to 6 mm.

8. The LCD module with FPC mounting foolproof structure according to claim 7, characterized in that: The positioning height is 5 mm.

9. The LCD module with FPC mounting foolproof structure according to claim 1, characterized in that: A first positioning triangle (231) is provided on the side of the first positioning hole (23), and a second positioning triangle (241) is provided on the side of the second positioning hole (24).

10. The LCD module with FPC installation foolproof structure according to claim 9, characterized in that: The first positioning triangle (231) and the second positioning triangle (241) have the same orientation.

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