Liquid crystal display module applied to bending back surface of flexible circuit board

Abstract

The utility model discloses a liquid crystal display module applied by bending the back of a flexible circuit board, which comprises a liquid crystal display (LCD) module and a backlight module, the LCD module is embedded in the backlight module, a first flexible circuit board is led out from the LCD module, a second flexible circuit board is led out from the backlight module, and the first flexible circuit board is connected with the second flexible circuit board. The first flexible circuit board and the second flexible circuit board are bent to the back face of the backlight module to be electrically connected, the back face of the backlight module is provided with a containing part for containing the first flexible circuit board and the second flexible circuit board, and the depth of the containing part is larger than the total thickness of the first flexible circuit board and the second flexible circuit board. The liquid crystal display module applied to the bent back face of the flexible circuit board is simple and compact in structure, the containing portion is arranged on the back face of the backlight module, the depth of the containing portion is larger than the total thickness of the first flexible circuit board and the second flexible circuit board, the first flexible circuit board and the second flexible circuit board are arranged in the containing portion, and therefore the liquid crystal display module can be applied to the bent back face of the flexible circuit board. And the fitting degree and the stability of the liquid crystal display module assembly are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a liquid crystal display module applied to the bent back side of a flexible circuit board. Background Art

[0002] Liquid crystal display module, which is mainly composed of LCD module and backlight module. LCD module and backlight module are connected through FPC. At present, LCD FPC and backlight FPC are mostly bent to the back of the module for welding, and then the two are glued and fixed to the back of the backlight module through single-sided adhesive tape. LCD FPC, backlight FPC and single-sided adhesive are simply stacked on the back of the backlight module. As people pursue thinner and thinner structures for electronic appliances, the space inside electronic appliances is becoming more and more compact. When the LCD FPC and backlight FPC of the liquid crystal display module are bent to the back of the liquid crystal display module, they occupy a part of the space, thereby affecting the fit of the assembly of the liquid crystal display module.

[0003] Chinese utility model patent CN 207232660U discloses an LCD module that is easy to bend FPC, including a module, the module having a module FPC and a backlight FPC, the module FPC and the backlight FPC are welded, the module FPC has a concave notch, and the backlight FPC is located above the concave notch; the utility model sets the concave notch on the module FPC, so that after the module FPC and the backlight FPC are assembled and welded, the backlight FPC will not touch the module FPC when it is bent and arched, and no bending stress will be generated.

[0004] When implementing the above patent, the inventor of the utility model found that since the module FPC and the backlight FPC are bent to the back of the backlight module, when the LCD display module is installed on the appliance, the module FPC and the backlight FPC are likely to hit the backlight module, resulting in the inability to fit the assembly and even affecting the display effect of the LCD display module. Utility Model Content

[0005] Based on this, it is necessary to provide a liquid crystal display module for application on the bent back side of a flexible circuit board to address the above technical problems, and to set a receiving portion on the backlight module to accommodate the first flexible circuit board and the second flexible circuit board, thereby reducing the thickness of the overall product and making the structure of the liquid crystal display module more compact.

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

[0007] A liquid crystal display module for application on the bent back side of a flexible circuit board comprises: an LCD module and a backlight module, wherein the LCD module is embedded in the backlight module, and the LCD module leads to a first flexible circuit board, and the backlight module leads to a second flexible circuit board, the first flexible circuit board and the second flexible circuit board are bent to the back side of the backlight module for electrical connection, and an accommodating portion for accommodating the first flexible circuit board and the second flexible circuit board is provided on the back side of the backlight module, and the depth of the accommodating portion is greater than the total thickness of the first flexible circuit board and the second flexible circuit board.

[0008] Furthermore, the accommodation portion is arranged along the vertical direction on the back side of the backlight module.

[0009] Furthermore, the backlight module includes a backlight adhesive frame and a backlight source, the backlight adhesive frame is provided with an embedding groove, the backlight source is placed in the embedding groove, and the second flexible circuit board is led out from the bottom of the backlight source and then bent to the accommodating portion of the backlight module.

[0010] Furthermore, the accommodating portion is a through groove formed by an inward depression and arranged on the back side of the backlight adhesive frame, and the through groove has a width capable of accommodating both the first flexible circuit board and the second flexible circuit board.

[0011] Furthermore, the first flexible circuit board is led out from the lower end of the LCD module and bent into the through groove, and one end of the second flexible circuit board in the through groove is welded to the first flexible circuit board body.

[0012] Furthermore, an adhesive layer is provided between the first flexible circuit board, the second flexible circuit board and the bottom surface of the through groove, and the depth of the through groove is greater than or equal to the total thickness of the first flexible circuit board, the second flexible circuit board and the adhesive layer.

[0013] Furthermore, the LCD module includes an upper polarizer, an upper glass sheet, a lower glass sheet and a lower polarizer in sequence, and the lower polarizer is adjacent to the backlight source.

[0014] Furthermore, a driving IC is provided at the lower end of the lower glass sheet.

[0015] Furthermore, one end of the first flexible circuit board is connected to the driver IC and then bent into the through groove, and extends vertically along the through groove.

[0016] Furthermore, the LCD module is inserted into the embedding groove, and a clearance position is provided on one side of the bottom end of the backlight glue frame adjacent to the driver IC.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a liquid crystal display module for application on the bent back side of a flexible circuit board. Since the first flexible circuit board and the second flexible circuit board are bent to the back side of a backlight module for welding, in order to prevent the stacking of the flexible circuit boards from affecting the display function of the liquid crystal display module during assembly, the utility model provides an accommodating portion on the back side of the backlight module, and the depth of the accommodating portion is greater than the total thickness of the first flexible circuit board and the second flexible circuit board. During assembly, the first flexible circuit board and the second flexible circuit board are placed in the accommodating portion, thereby ensuring the fit of the liquid crystal display module assembly without affecting the function of the liquid crystal display module.

[0019] The liquid crystal display module provided by the utility model for use with the bent back side of the flexible circuit board has a simple and compact structure, and an adhesive layer is also provided in the accommodating portion, through which the first flexible circuit board and the second flexible circuit board are fixed in the accommodating portion, thereby further ensuring the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front view of a liquid crystal display module applied to the bent back side of a flexible circuit board provided by the utility model;

[0021] Figure 2 A rear view of a liquid crystal display module applied to the bent back side of the flexible circuit board provided by the utility model;

[0022] Figure 3 A first side view of a liquid crystal display module applied to the bent back side of a flexible circuit board provided by the utility model;

[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram of

[0024] Figure 5 A second side view of a liquid crystal display module applied to the bent back side of the flexible circuit board provided by the utility model;

[0025] Figure 6 A schematic diagram of the structure of an LCD module of a liquid crystal display module applied to the bent back side of a flexible circuit board provided by the utility model;

[0026] Figure 7 A schematic diagram of the backlight module structure of a liquid crystal display module applied to the bent back side of a flexible circuit board provided by the utility model

[0027] The markings in the figure are as follows:

[0028] LCD module 1, upper polarizer 11, upper glass sheet 12, lower polarizer 13, lower glass sheet 14, protective glue 15, driver

[0029] IC16;

[0030] Backlight module 2, backlight adhesive frame 21, embedding groove 211, through groove 212, fixing hole 213, double-sided adhesive 214, avoidance position 215, backlight source 22;

[0031] A first flexible circuit board 3;

[0032] Second flexible circuit board 4. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] As described in the background art, the conventional liquid crystal display module with the bent back side of the flexible circuit board is easily pushed against the LCD module during assembly because the flexible circuit board is stacked on the back side of the backlight module, thus affecting the display function of the liquid crystal display module.

[0037] In order to solve this technical problem, the utility model provides a liquid crystal display module applied to the bent back side of a flexible circuit board.

[0038] Specifically, please refer to Figure 1-7The liquid crystal display module for application on the bent back side of a flexible circuit board comprises: an LCD module 1 and a backlight module 2, wherein the LCD module 1 is embedded in the backlight module 2, and the LCD module 1 leads to a first flexible circuit board 3, and the backlight module 2 leads to a second flexible circuit board 4, the first flexible circuit board 3 and the second flexible circuit board 4 are bent to the back side of the backlight module 2 for electrical connection, and a receiving portion for receiving the first flexible circuit board 3 and the second flexible circuit board 4 is provided on the back side of the backlight module 2, and the depth of the receiving portion is greater than the total thickness of the first flexible circuit board 3 and the second flexible circuit board 4.

[0039] The utility model provides a liquid crystal display module for application on the back side of a flexible circuit board that is bent. An LCD module 1 is embedded in a backlight module 2. A first flexible circuit board 3 led out of the LCD module 1 and a second flexible circuit board 4 led out of the backlight module 2 are both bent to the back side of the backlight module 2. An accommodating portion is provided on the back side of the backlight module 2 to accommodate the first flexible circuit board 3 and the second flexible circuit board 4, so as to prevent the flexible circuit boards from being simply stacked on the back side of the backlight module 2, resulting in poor assembly fit of the liquid crystal display module and affecting the function of the display screen.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Example 1

[0044] Please refer to Figure 1-7 The present embodiment provides a liquid crystal display module for application on the bent back side of a flexible circuit board, comprising an LCD module 1 and a backlight module 2, wherein the LCD module 1 is embedded in the backlight module 2, and the LCD module 1 leads to a first flexible circuit board 3, and the backlight module 2 leads to a second flexible circuit board 4, the first flexible circuit board 3 and the second flexible circuit board 4 are bent to the back side of the backlight module 2 and electrically connected, and the backlight module 2 provides a light source for the LCD module 1, and when installed, the backlight module 2 is fixed to a corresponding electronic appliance.

[0045] Furthermore, a receiving portion for accommodating the first flexible circuit board 3 and the second flexible circuit board 4 is provided on the back side of the backlight module 2. The receiving portion is arranged on the back side of the backlight module 2 and along the vertical direction of the backlight module 2. The arrangement of the receiving portion can prevent the backlight module 2 from being pushed by the flexible circuit board on the back side when the liquid crystal display module is installed on the electronic appliance due to too small a gap, thereby affecting the display function of the liquid crystal display module.

[0046] Furthermore, the first flexible circuit board 3 is led out from the lower end of the LCD module 1, then bent to the back side of the backlight module 2 and extends vertically along the back side of the backlight module 2 to extend out of the top of the backlight module 2, and then is electrically connected to the corresponding electronic appliance.

[0047] Furthermore, one end of the second flexible circuit board 4 is led out from the bottom of the backlight module 2 and bent to the back side of the backlight module 2, and the other end of the second flexible circuit board 4 is welded to the body of the first flexible circuit board 3, thereby forming an electrical connection between the first flexible circuit board 3 and the second flexible circuit board 4.

[0048] Further, such as Figure 6 As shown, the LCD module 1 includes an upper polarizer 11, an upper glass sheet 12, a lower glass sheet 14 and a lower polarizer 13 in sequence, wherein the lower polarizer 13 is adjacent to the backlight module 2, and the upper polarizer 11 is away from the backlight module 2. Further, conductive electrodes are provided on the corresponding sides of the upper glass sheet 12 and the lower glass sheet 14, and liquid crystal materials are embedded inside the upper glass sheet 12 and the lower glass sheet 14. External electrical signals are transmitted to the liquid crystal materials through the conductive electrodes to form different images. Further, a driving IC 16 is also provided at the lower end of the lower glass sheet 14 in the vertical direction facing the upper glass sheet 12 to provide external electrical signals to the conductive electrodes.

[0049] Furthermore, the driver IC 16 is connected to the first flexible circuit board 3. Specifically, one end of the first flexible circuit board 3 is connected to the driver IC 16 and then bent to the back of the backlight module 2, and extends out along the accommodating portion set on the back of the backlight module 2. The other end of the first flexible circuit board 3 is connected to the external power supply.

[0050] Furthermore, a protective glue 15 is provided at the interface end between the driver IC 16 and the first flexible circuit board 3 to prevent the interface from falling off or being disturbed.

[0051] Further, such as Figure 7As shown, the backlight module 2 includes a backlight glue frame 21 and a backlight source 22. The backlight source 22 is arranged on the backlight glue frame 21 and on a side adjacent to the LCD module 1. Specifically, the backlight glue frame 21 is provided with an embedding groove 211. The backlight source 22 is placed in the embedding groove 211 of the backlight glue frame 21. After one end of the second flexible circuit board 4 is connected to the lower end of the backlight source 22 in the vertical direction, the other end is bent to the back side of the backlight glue frame 21 and is welded to the main body of the first flexible circuit board 3 in the accommodating portion.

[0052] Specifically, an embedding groove 211 is provided on one side of the backlight glue frame 21 adjacent to the LCD module 1, and the shape of the embedding groove 211 is adapted to the shape of the LCD module 1. The LCD module 1 is embedded in the embedding groove 211, and the lower polarizer 13 is arranged adjacent to the backlight source 22. A clearance position 215 is provided on one side of the bottom end of the backlight glue frame 21 adjacent to the driver IC 16. When the LCD module 1 is inserted into the embedding groove 211, one end of the first flexible circuit board 3 is connected to the driver IC 16, and the other end passes through the clearance position 215, is bent to the back of the backlight glue frame 21 and extends out along the accommodating portion.

[0053] Furthermore, the accommodating portion on the back side of the backlight module 2 is a through groove 212, and the through groove 212 is formed by being recessed inwardly along the vertical direction of the back side of the backlight glue frame 21. The width of the through groove 212 can accommodate the first flexible circuit board 3 and the second flexible circuit board 4 at the same time. The first flexible circuit board 3 and the second flexible circuit board 4 are placed in the through groove 212 to prevent the flexible circuit boards from being stacked and affecting the fit of the entire liquid crystal display module assembly.

[0054] Furthermore, an adhesive layer 214 is provided between the first flexible circuit board 3 and the second flexible circuit board 4 and the bottom surface of the through groove 212 to fix the first flexible circuit board 3 and the second flexible circuit board 4 in the through groove 212 to prevent them from falling off. The adhesive layer 214 can be a double-sided adhesive or solid glue of other conventional technologies. Specifically, the adhesive layer 214 in this embodiment is a double-sided adhesive, and the depth of the through groove 212 is greater than or equal to the total thickness of the first flexible circuit board 3, the second flexible circuit board 4 and the adhesive layer 214, so as to ensure that the first flexible circuit board 3 and the second flexible circuit board 4 will not protrude from the backlight module 2. When the liquid crystal display module is installed on the electronic appliance, the first flexible circuit board 3 and the second flexible circuit board 4 will not hit the backlight module 2, affecting the display function of the entire liquid crystal display module.

[0055] Furthermore, four fixing holes 213 are provided on the four corners of the backlight adhesive frame 21 . The fixing holes 213 are formed integrally with the backlight adhesive frame 21 , and the backlight adhesive frame 21 is fixed inside the electronic appliance by screws.

[0056] The utility model provides an assembly method of a liquid crystal display module for application on the bent back side of a flexible circuit board: an upper polarizer 11, an upper glass sheet 12, a lower glass sheet 14 and a lower polarizer 13 are assembled in sequence to complete the installation of an LCD module 1; one end of a second flexible circuit board 4 is welded to the bottom of a backlight source 22; the LCD module 1 is embedded in an embedding groove 211, one end of a first flexible circuit board 3 is welded to a driver IC 16 and the interface is covered with a protective adhesive 15, the first flexible circuit board 3 is bent into a through groove 212 and extends out; the other end of the second flexible circuit board 4 is bent into the through groove 212 and welded to the body of the first flexible circuit board 3, the first flexible circuit board 3 and the second flexible circuit board 4 are fixed in the through groove 212 by double-sided adhesive, and finally the liquid crystal module is fixed to the inside of a corresponding electronic appliance by a fixing hole 213.

[0057] 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.

[0058] 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 liquid crystal display module for application on the back side of a flexible circuit board, characterized in that: It includes: An LCD module (1) and a backlight module (2), wherein the LCD module (1) is embedded in the backlight module (2), and the LCD module (1) leads to a first flexible circuit board (3), and the backlight module (2) leads to a second flexible circuit board (4), the first flexible circuit board (3) and the second flexible circuit board (4) are bent to the back side of the backlight module (2) for electrical connection, and the back side of the backlight module (2) is provided with a receiving portion for receiving the first flexible circuit board (3) and the second flexible circuit board (4), and the depth of the receiving portion is greater than the total thickness of the first flexible circuit board (3) and the second flexible circuit board (4).

2. The liquid crystal display module for application on the bent back side of the flexible circuit board according to claim 1, characterized in that: The accommodating portion is arranged along the vertical direction on the back side of the backlight module (2).

3. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 2, characterized in that: The backlight module (2) comprises a backlight adhesive frame (21) and a backlight source (22); the backlight adhesive frame (21) is provided with an embedding groove (211), the backlight source (22) is placed in the embedding groove (211), and the second flexible circuit board (4) is led out from the bottom of the backlight source (22) and then bent to the receiving portion of the backlight module (2).

4. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 3, characterized in that: The accommodating portion is a through groove (212) formed by an inward depression and arranged on the back side of the backlight plastic frame (21); the through groove (212) has a width capable of accommodating both the first flexible circuit board (3) and the second flexible circuit board (4).

5. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 4, characterized in that: The first flexible circuit board (3) is led out from the lower end of the LCD module (1) and bent into the through groove (212), and one end of the second flexible circuit board (4) in the through groove (212) is welded to the body of the first flexible circuit board (3).

6. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 4, characterized in that: An adhesive layer (214) is further provided between the first flexible circuit board (3) and the second flexible circuit board (4) and the bottom surface of the through groove (212); the depth of the through groove (212) is greater than or equal to the total thickness of the first flexible circuit board (3), the second flexible circuit board (4) and the adhesive layer (214).

7. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 4, characterized in that: The LCD module (1) comprises an upper polarizer (11), an upper glass sheet (12), a lower glass sheet (14) and a lower polarizer (13) in sequence, and the lower polarizer (13) is adjacent to the backlight source (22).

8. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 7, characterized in that: A driving IC (16) is provided at the lower end of the lower glass sheet (14).

9. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 8, characterized in that: One end of the first flexible circuit board (3) is connected to the driver IC (16) and then bent into the through groove (212), and extends vertically along the through groove (212).

10. The liquid crystal display module for use with the bent back side of the flexible circuit board according to claim 9, characterized in that: The LCD module (1) is inserted into the embedding groove (211), and a side of the bottom end of the backlight glue frame (21) adjacent to the driver IC (16) is provided with a clearance position (215).

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