Display module for improving backlight welding performance
By adding exposed copper areas on the backlight pad, the problems of dummy welding, fake welding and short circuits when welding backlight FPC and module FPC in the display module are solved, and the reliability and strength of welding are improved.
Patent Information
- Application Number
- CN202422525824.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-18
AI Technical Summary
When welding backlight FPC and module FPC in existing display modules, there are problems such as false welding, fake welding, short circuit and insufficient welding position strength.
Add a copper exposed area on the backlight pad. The solder flows to the copper exposed area during soldering to avoid short circuits and enhance the welding strength. Observe the welding situation through the copper exposed area.
It improves the reliability and strength of welding, facilitates welding inspection, avoids short circuit problems, and enhances the connection strength between the backlight FPC and the module FPC after welding.
Smart Images
Figure CN223310041U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, and in particular to a display module capable of improving backlight welding performance. Background Art
[0002] In the display module, the backlight FPC needs to be welded to the backlight pad of the module FPC. In the existing structure, after the backlight FPC and the module FPC are welded, the following problems exist: 1. It is not easy to check the soldering effect, and defects such as cold soldering and false soldering are prone to occur; 2. Short circuit problems may occur due to excessive soldering; 3. After welding, the tensile force that the backlight FPC and the module FPC can withstand is small, and the welding position is prone to problems such as tin cracking.
[0003] Therefore, the existing technology has defects and needs to be improved. Utility Model Content
[0004] The purpose of the present invention is to at least partially overcome the deficiencies of the prior art and provide a display module that improves backlight welding performance.
[0005] The technical solution of the present invention is as follows: The present invention provides a display module for improving the backlight welding performance, including: a backlight module and a module FPC, the backlight module including a backlight FPC, the backlight FPC including a backlight connector, a plurality of first backlight pads formed on the backlight connector, a backlight welding area formed on the module FPC, a plurality of matching second backlight pads formed on the backlight welding area for the first backlight pads of the backlight connector, the outer sides of the second backlight pads on both sides are respectively formed with exposed copper areas corresponding to the corresponding second backlight pads, and the first backlight pads are welded and fixed to the corresponding second backlight pads.
[0006] Furthermore, a retracted area is formed at the ends of both sides of the backlight connector, and the upper edge of the retracted area is flush with the upper edge of the copper exposed area.
[0007] Furthermore, the left and right widths of the retracted area are 0.2 mm, the top and bottom lengths of the exposed copper area are 0.3 mm, and the edge of the exposed copper area exceeds the corresponding backlight connector by 0.2 mm.
[0008] Furthermore, the display module further includes a liquid crystal module, the liquid crystal module is stacked on the top surface of the backlight module, and the module FPC is bound and connected to the backlight module.
[0009] Furthermore, the display module further includes a cover plate, and the cover plate is adhered to the top surface of the liquid crystal module by OCA glue.
[0010] By adopting the above solution, the beneficial effect of the present invention is that: by adding an exposed copper area to the second backlight soldering pad, the solder will flow to the exposed copper area during the welding operation, avoiding the short circuit problem caused by the solder moving inward, and can enhance the strength of the backlight FPC and the module FPC after welding. After the welding is completed, it is also easy to visually observe the welding condition by observing the exposed copper area. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural diagram of a backlight FPC according to an embodiment of the present invention.
[0012] Figure 2 Schematic diagram of the structure of a module FPC according to an embodiment of the present invention.
[0013] Figure 3 This is a structural diagram of a backlight FPC and a module FPC according to an embodiment of the present invention. DETAILED DESCRIPTION
[0014] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0015] Please refer to Figures 1 to 3 In this embodiment, the utility model provides a display module for improving backlight welding performance, including: a backlight module and a module FPC2, the backlight module including a backlight FPC 1, the backlight FPC 1 including a backlight connector 11, a plurality of first backlight pads 12 formed on the backlight connector 11, a backlight welding area formed on the module FPC2, a plurality of second backlight pads 21 matching the first backlight pads 12 of the backlight connector 11 are formed on the backlight welding area, and copper exposed areas 22 corresponding to the corresponding second backlight pads 21 are respectively formed on the outer sides of the second backlight pads 21 on both sides, and the first backlight pads 12 are fixed to the corresponding second backlight pads 21 by welding.
[0016] Furthermore, the ends of both sides of the backlight connector 11 are formed with retracted areas 13 , and the upper edges of the retracted areas 13 are flush with the upper edges of the copper exposed areas 22 , which facilitates alignment during welding.
[0017] Furthermore, the left and right width W1 of the retracted area 13 is 0.2 mm, the top and bottom length L of the copper exposed area 22 is 0.3 mm, and the distance W2 from the edge of the copper exposed area 22 beyond the edge of the backlight connector 11 is 0.2 mm.
[0018] Furthermore, the display module further includes a liquid crystal module, which is stacked on the top surface of the backlight module, and the module FPC2 is bound and connected to the backlight module.
[0019] Furthermore, the display module further includes a cover plate, and the cover plate is adhered to the top surface of the liquid crystal module by OCA glue.
[0020] In summary, the beneficial effects of this solution are: by adding an exposed copper area to the second backlight pad, the solder will flow to the exposed copper area during the welding operation, avoiding the short circuit problem caused by the solder moving inward, and can enhance the strength of the backlight FPC and the module FPC after welding. After the welding is completed, it is also easy to visually observe the welding condition by observing the exposed copper area.
[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A display module for improving backlight welding performance, characterized in that: include: A backlight module and a module FPC, wherein the backlight module includes a backlight FPC, the backlight FPC includes a backlight connector, a plurality of first backlight pads are formed on the backlight connector, a backlight welding area is formed on the module FPC, a plurality of second backlight pads are formed on the backlight welding area to match the first backlight pads of the backlight connector, copper exposed areas corresponding to the corresponding second backlight pads are respectively formed on the outer sides of the second backlight pads on both sides, and the first backlight pads are fixed to the corresponding second backlight pads by welding.
2. The display module for improving backlight welding performance according to claim 1, characterized in that: Ends on both sides of the backlight connector are formed with retracted areas, and upper edges of the retracted areas are flush with the upper edges of the copper exposed areas.
3. The display module for improving backlight welding performance according to claim 2, characterized in that: The left and right widths of the retracted area are 0.2 mm, the top and bottom lengths of the exposed copper area are 0.3 mm, and the distance that the edge of the exposed copper area exceeds the edge of the backlight connector is 0.2 mm.
4. The display module for improving backlight welding performance according to any one of claims 1 to 3, characterized in that: It also includes a liquid crystal module, which is stacked on the top surface of the backlight module, and the module FPC is bound and connected to the backlight module.
5. The display module for improving backlight welding performance according to claim 4, characterized in that: It also includes a cover plate, which is attached to the top surface of the liquid crystal module through OCA glue.