Display module capable of reducing PCB assembly stress
By using fixed components in the liquid crystal display module to fix the PCB board, the interaction force between the PCB board and the backlight module is reduced, the light leakage problem caused by internal stress is solved, and the normal display of the display screen is ensured.
Patent Information
- Application Number
- CN202420316693.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-20
AI Technical Summary
In the existing liquid crystal display modules, the fixing method of the PCB drive board and the backlight module is likely to cause internal stress, resulting in poor display problems such as light leakage.
Four fixing components are used to fix the PCB board on the back of the backlight module, and the interplay between the fixing column and the through hole and the glue fixing, reducing the interaction force between the PCB board and the backlight module.
It effectively reduces PCB assembly stress, avoids the impact on the display screen, and ensures normal display function.
Smart Images
Figure CN222213125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a display module capable of reducing PCB assembly stress. Background Art
[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. Liquid crystal display modules are mainly composed of liquid crystal display screens and backlight modules. A PCB driver board is usually fixed on the liquid crystal display module to ensure the normal use of the liquid crystal display module. The PCB driver board is fixed on the back of the backlight module.
[0003] There are two ways to fix the PCB driver board of the liquid crystal display module to the back of the backlight module in the prior art. One is to lock the PCB driver board around the backlight module with screws, and the other is to use double-sided adhesive to directly stick the PCB driver board to the back of the backlight module. These two methods are prone to generate internal stress when the backlight module or PCB driver board is not flat. The internal stress is transmitted to the display screen through the backlight module, which is prone to poor display problems such as light leakage. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a display module that reduces PCB assembly stress.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A display module for reducing PCB assembly stress comprises: a display module body, wherein the display module body comprises a display screen and a backlight module, wherein the display screen is accommodated in the backlight module, a PCB board is fixed to the back of the backlight module, and a fixing component for fixing the PCB board to the back of the backlight module is arranged between the backlight module and the PCB board.
[0007] In one embodiment, there are four fixing components, and the four fixing components are all located on the back side of the backlight module, and the four fixing components are respectively located near four corners of the backlight module.
[0008] In one embodiment, the fixing component includes a fixing column arranged on the back side of the backlight module and a through hole opened on the PCB board, the fixing column and the backlight module are integrally formed, the through hole passes through the side of the PCB board, and the fixing column is inserted into the through hole.
[0009] In one embodiment, the fixed column includes a limiting column and a plug-in column connected to the limiting column, the limiting column is connected to the backlight module, the limiting column and the plug-in column are both plugged into the through hole, and one end of the plug-in column away from the limiting column extends out of the through hole.
[0010] In one embodiment, the diameter of the limiting column is slightly smaller than the diameter of the through hole.
[0011] In one embodiment, the length of the limiting column is half the depth of the through hole.
[0012] In one embodiment, the diameter of the plug-in column is smaller than the diameter of the limiting column.
[0013] In one embodiment, a height difference is formed between the limiting column and the plug-in column, and a receiving cavity is formed between the fixing column and the inner wall of the through hole, and the receiving cavity contains glue for bonding.
[0014] In one embodiment, an FPC is bound to the display screen, one end of the FPC is bound to the display screen, and one end of the FPC away from the display screen is bent and bent to the back of the backlight module.
[0015] In one embodiment, a connector is provided on the PCB, and one end of the FPC away from the display screen is bent to one side of the connector and connected to the connector.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model discloses a display module for reducing PCB assembly stress by setting a fixing component. When the PCB board is assembled with the backlight module, the PCB board is placed on the back side of the backlight module, the position of the PCB board is fixed by plugging the fixing column with the through hole, glue is placed in the accommodating cavity between the fixing column and the through hole, and after the glue is fixed, the PCB board is fixed on the back side of the backlight module, and no mutual force is generated between the PCB board and the backlight module, thereby not affecting the display function of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 A schematic diagram of the front structure of a display module for reducing PCB assembly stress provided by the utility model;
[0020] Figure 2A schematic diagram of a side cross-sectional structure of a display module for reducing PCB assembly stress provided by the utility model;
[0021] Figure 3 A schematic diagram of the back structure of a display module for reducing PCB assembly stress provided by the utility model.
[0022] Description of the drawings: 10. Display module body; 20. Display screen; 21. FPC; 30. Backlight module; 31. Fixing column; 311. Limiting column; 312. Connecting column; 40. PCB board; 41. Connector; 42. Through hole; 50. Accommodating cavity; 60. Glue. DETAILED DESCRIPTION
[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0024] A display module for reducing PCB assembly stress, referring to Figure 1 , including a display module body 10 , the display module body 10 includes a display screen 20 and a backlight module 30 , the display screen 20 is accommodated in the backlight module 30 , and the backlight module 30 wraps around the display screen 20 .
[0025] Reference Figure 2 The display screen 20 is bound with an FPC 21, which is a flexible circuit board. The FPC 21 is bound to the lower end of the display screen 20. One end of the FPC 21 away from the display screen 20 is bent and bent to the back of the backlight module 30.
[0026] Reference Figure 2 A PCB board 40 is disposed on the back of the backlight module 30. The PCB board 40 is disposed along the height direction of the backlight module 30 and is fixed to the back of the backlight module 30. A connector 41 is disposed at the lower end of the PCB board 40. An end of the FPC 21 away from the display screen 20 is bent to one side of the connector 41 and connected to the connector 41, so that the PCB board 40 is connected to the FPC 21 through the connector 41, thereby ensuring the normal display of the display screen 20.
[0027] Reference Figure 2 and Figure 3 A fixing assembly for fixing the PCB board 40 to the back of the backlight module 30 is provided between the backlight module 30 and the PCB board 40. There are four fixing assemblies, all of which are located on the back of the backlight module 30, and the four fixing assemblies are respectively located near the four corners of the backlight module 30. The four fixing assemblies respectively connect the four corners of the PCB board 40 to the backlight module 30, so that the PCB board 40 is fixed on the back of the backlight module 30.
[0028] Reference Figure 2The fixing component includes a fixing column 31 arranged on the back side of the backlight module 30 and a through hole 42 opened on the PCB board 40. The fixing column 31 and the backlight module 30 are integrally formed. The through hole 42 is opened along the thickness direction of the PCB board 40, and the through hole 42 passes through the side of the PCB board 40. The length of the fixing column 31 is longer than the depth of the through hole 42. One end of the fixing column 31 away from the backlight module 30 is penetrated in the through hole 42 and passes out of the through hole 42.
[0029] Reference Figure 2 The fixing column 31 includes a limiting column 311 and a plug-in column 312 connected to the limiting column 311. The limiting column 311 is connected to the back of the backlight module 30, and the plug-in column 312 is located at one end of the limiting column 311 away from the backlight module 30. The limiting column 311 and the plug-in column 312 are both cylindrically arranged, the diameter of the limiting column 311 is larger than the diameter of the plug-in column 312, and the diameter of the limiting column 311 is slightly smaller than the diameter of the through hole 42, so that the limiting column 311 is penetrated in the through hole 42, thereby being used to locate the position of the PCB board 40.
[0030] Further, refer to Figure 2 , the length of the limiting column 311 is half of the depth of the through hole 42 .
[0031] Reference Figure 2 , the plug-in column 312 is plugged into the through hole 42, and one end of the plug-in column 312 away from the limiting column 311 extends out of the through hole 42, and a height difference is formed between the limiting column 311 and the plug-in column 312, so that a receiving cavity 50 is formed between the fixing column 31 and the through hole 42. The receiving cavity 50 contains glue 60, and the glue 60 fills the gap between the fixing column 31 and the PCB board 40, that is, the entire interior of the receiving cavity 50. When the PCB board 40 is assembled with the backlight module 30, the PCB board 40 is placed on the back of the backlight module 30, and the position of the PCB board 40 is fixed by plugging the fixing column 31 with the through hole 42. The glue 60 is placed in the receiving cavity 50 between the fixing column 31 and the through hole 42. After the glue 60 is fixed, the PCB board 40 is fixed to the back of the backlight module 30, and no mutual force is generated between the PCB board 40 and the backlight module 30, so that the display function of the display screen 20 will not be affected.
[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A display module for reducing PCB assembly stress, characterized in that: include: A display module body (10), the display module body (10) comprising a display screen (20) and a backlight module (30), the display screen (20) being accommodated in the backlight module (30), a PCB board (40) being fixed on the back side of the backlight module (30), and a fixing component for fixing the PCB board (40) to the back side of the backlight module (30) being arranged between the backlight module (30) and the PCB board (40).
2. A display module for reducing PCB assembly stress according to claim 1, characterized in that: There are four fixing components, and the four fixing components are all located on the back side of the backlight module (30). The four fixing components are respectively located near the four corners of the backlight module (30).
3. A display module for reducing PCB assembly stress according to claim 2, characterized in that: The fixing component comprises a fixing column (31) arranged on the back side of the backlight module (30) and a through hole (42) opened on the PCB board (40); the fixing column (31) and the backlight module (30) are integrally formed; the through hole (42) passes through the side of the PCB board (40); and the fixing column (31) is inserted into the through hole (42).
4. A display module for reducing PCB assembly stress according to claim 3, characterized in that: The fixing column (31) comprises a limiting column (311) and a plug-in column (312) connected to the limiting column (311); the limiting column (311) is connected to the backlight module (30); the limiting column (311) and the plug-in column (312) are both plugged into the through hole (42); and one end of the plug-in column (312) away from the limiting column (311) extends out of the through hole (42).
5. A display module for reducing PCB assembly stress according to claim 4, characterized in that: The diameter of the limiting column (311) is slightly smaller than the diameter of the through hole (42).
6. The display module for reducing PCB assembly stress according to claim 5, characterized in that: The length of the limiting column (311) is half the depth of the through hole (42).
7. A display module for reducing PCB assembly stress according to claim 6, characterized in that: The diameter of the plug-in column (312) is smaller than the diameter of the limiting column (311).
8. The display module for reducing PCB assembly stress according to claim 7, characterized in that: A height difference is formed between the limiting column (311) and the plug-in column (312), and an accommodating cavity (50) is formed between the fixing column (31) and the inner wall of the through hole (42), wherein the accommodating cavity (50) contains glue (60) for bonding.
9. The display module for reducing PCB assembly stress according to claim 1, characterized in that: The display screen (20) is bound with an FPC (21), one end of the FPC (21) is bound to the display screen (20), and one end of the FPC (21) away from the display screen (20) is bent and bent to the back of the backlight module (30).
10. The display module for reducing PCB assembly stress according to claim 9, characterized in that: A connector (41) is provided on the PCB, and one end of the FPC (21) away from the display screen (20) is bent to one side of the connector (41) and connected to the connector (41).