Display module capable of preventing open circuit of backlight circuit
By adopting a wire-out structure at both ends of the backlight pad of the LCD module, the problem of the backlight circuit being opened due to high-temperature welding operation is solved, the product yield and reliability are improved, and the repair cost is reduced.
Patent Information
- Application Number
- CN202420392781.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-02-28
AI Technical Summary
In the LCD display module, the backlight line is prone to open circuit due to high-temperature welding operations, resulting in the backlight module being unable to light up.
A display module is designed to prevent the backlight line from being open. By adopting a wire-out structure at both ends of the backlight pad, it can maintain the electrical connection effect when manual welding operations are not standardized or errors are made.
It effectively avoids the problem of open circuits of backlight lines due to welding, improves the yield and reliability of the product, and reduces the labor and time costs of rework.
Smart Images
Figure CN222672080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a display module for preventing a backlight circuit from being open. Background Art
[0002] In the LCD display module, it is necessary to weld the interface in the backlight FPC of the backlight module to the backlight pad in the module FPC, so as to realize the electrical connection between the module FPC and the backlight FPC. Common welding methods in this process include manual welding or automatic welding by machine. In some display modules, only manual welding can be used due to structural limitations. Since backlight welding is performed at high temperature, the high-temperature gun used can easily burn the backlight circuit and pad of the module FPC, causing an open circuit problem, resulting in the failure of the backlight module to light up.
[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide a display module which can prevent the backlight circuit from being open.
[0005] The technical solution of the utility model is as follows: The utility model provides a display module for preventing the backlight circuit from being open, including: a module FPC, a backlight pad area, a backlight circuit and a first interface are formed on the module FPC, a plurality of backlight pads are formed in the backlight pad area, and both ends of all the backlight pads are electrically connected to the first interface through the backlight circuit.
[0006] Furthermore, the solution also includes a liquid crystal module, the module FPC includes a second interface, and the module FPC is bound and connected to the liquid crystal module via the second interface.
[0007] Furthermore, the solution also includes a backlight module, which is stacked below the liquid crystal module. The backlight module includes a backlight FPC, and an interface of the backlight FPC is welded to a corresponding backlight pad on the module FPC.
[0008] Furthermore, the module FPC is a double-layer FPC, and backlight circuits are formed on both the front and back layers of the module FPC.
[0009] By adopting the above scheme, the beneficial effect of the utility model is that it can effectively avoid the problem of open circuit of the backlight circuit due to welding, improve the yield and reliability of the product, and reduce the labor cost and time cost of rework. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of a module FPC according to an embodiment of the utility model.
[0011] Figure 2 It is a schematic structural diagram of a backlight pad of a module FPC according to an embodiment of the utility model.
[0012] Figure 3 It is a structural schematic diagram of a display module according to an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0014] The utility model provides a display module for preventing backlight circuit from being open-circuited, comprising: a module FPC 1, a backlight pad area, a backlight circuit 12 and a first interface 13 formed on the module FPC 1, a plurality of backlight pads 11 formed on the backlight pad area, and both ends of all the backlight pads 11 are electrically connected to the first interface 13 through the backlight circuit 12. In this solution, by adopting a wire-out structure at both ends of the backlight pad 11, when the backlight circuit 12 or the backlight pad 11 at one end of the backlight pad 11 is burned due to improper manual welding operation or error, the backlight circuit 12 at the other end can still ensure the electrical connection effect, thereby avoiding the problem that the backlight module cannot be lit due to an open circuit.
[0015] Furthermore, the module FPC 1 is a double-layer FPC. Since the backlight pad 11 has wires extending from both ends, in order to facilitate the routing of the backlight line and avoid interference between the positive line and the negative line, backlight lines 12 can be provided on both the front and back layers of the module FPC 1.
[0016] Furthermore, the solution also includes a liquid crystal module 2, the module FPC 1 includes a second interface, and the module FPC 1 is bound and connected to the liquid crystal module 2 via the second interface.
[0017] Furthermore, the solution also includes a backlight module 3, which is stacked below the liquid crystal module 2, and includes a backlight FPC, and an interface of the backlight FPC is welded to a corresponding backlight pad 11 on the module FPC 1.
[0018] In summary, the beneficial effects of this solution are: it can effectively avoid the problem of open circuit of the backlight circuit due to welding, improve the yield and reliability of the product, and reduce the labor cost and time cost of rework.
[0019] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A display module for preventing backlight circuit from being open, characterized in that: include: A module FPC is formed with a backlight pad area, a backlight circuit and a first interface, the backlight pad area is formed with a plurality of backlight pads, and both ends of all the backlight pads are electrically connected to the first interface through the backlight circuit.
2. The display module for preventing backlight circuit from being open according to claim 1, characterized in that: It also includes a liquid crystal module, the module FPC includes a second interface, and the module FPC is bound and connected to the liquid crystal module via the second interface.
3. The display module for preventing backlight circuit from being open-circuited according to claim 2, characterized in that: It also includes a backlight module, which is stacked below the liquid crystal module. The backlight module includes a backlight FPC, and an interface of the backlight FPC is welded to a corresponding backlight pad on the module FPC.
4. The display module for preventing backlight circuit from being open according to any one of claims 1 to 3, characterized in that: The module FPC is a double-layer FPC, and backlight circuits are formed on both the front and back layers of the module FPC.