Display module for improving FPC welding effect

By setting front and rear barrier inks in the backlight welding area, the problem of solder overflow is solved, the welding effect and recognition efficiency of the LCD module are improved, and the welding quality is ensured.

CN223413586UActive Publication Date: 2025-10-03GANZHOU TXO TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423060690.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-10-03
Estimated Expiration
2034-12-11

AI Technical Summary

Technical Problem

In existing liquid crystal display modules, the amount of solder is difficult to inspect and control, resulting in poor soldering results, especially the problem of tin overflow that is difficult to avoid.

Method used

Front barrier ink and rear barrier ink are set in the backlit welding area, located at the front and back edges of the pad respectively, to prevent solder overflow and quickly identify solder overflow problems through color differences.

Benefits of technology

The solder is fully filled at the connection position, improving welding efficiency and product quality, and facilitating the identification and treatment of overflow solder.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223413586U_ABST
    Figure CN223413586U_ABST
Patent Text Reader

Abstract

The utility model discloses a display module for improving FPC welding effect, which comprises a liquid crystal glass assembly, a backlight module and a module FPC, the liquid crystal glass assembly and the backlight module are laminated, the backlight module comprises a backlight FPC, the module FPC is connected with the liquid crystal glass assembly in a binding manner, a backlight welding area is formed on the module FPC, and the backlight welding area is connected with the liquid crystal glass assembly in a binding manner. A plurality of backlight welding pads are formed on the backlight welding area, alignment marks are arranged on the left side and the right side of the backlight welding area, front blocking printing ink is arranged in front of the backlight welding area, rear blocking printing ink is arranged on the rear side of the backlight welding area, and the front blocking printing ink and the rear blocking printing ink are both in contact with the backlight welding pads. The front edge, at the contact position, of the front blocking ink and the rear edge, at the contact position, of the rear blocking ink are both located on the backlight bonding pad, a connector of the backlight FPC is welded to a backlight welding area of the module FPC, and the welding connection position is located between the front blocking ink and the rear blocking ink. The beneficial effects of the utility model lie in that through the setting of the blocking printing ink, the soldering tin can be blocked, the soldering tin is ensured to be full at the connection position, and whether tin overflow exists or not can be quickly and conveniently identified through the blocking printing ink after welding, which is helpful for improving the welding efficiency and the product quality.
Need to check novelty before this filing date? Find Prior Art

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 FPC welding effect. Background Art

[0002] Existing liquid crystal display modules generally include components such as a liquid crystal glass assembly, a driver IC, a module FPC and a backlight module. The liquid crystal glass assembly is bound and connected to the module FPC, and the backlight module is stacked on the lower layer of the liquid crystal glass assembly. The connector of the backlight FPC in the backlight module is welded to the backlight welding area of ​​the module FPC by manual welding or machine welding. However, after welding, the set amount of solder is not convenient to inspect and control, and problems such as tin overflow will occur, affecting the welding effect.

[0003] Therefore, the existing technology has defects and needs to be improved. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a display module that improves the FPC welding effect.

[0005] The technical solution of the present utility model is as follows: The present utility model provides a display module for improving the FPC welding effect, comprising: a liquid crystal glass assembly, a backlight module and a module FPC, the liquid crystal glass assembly and the backlight module are stacked, the backlight module comprises a backlight FPC, the module FPC is bound and connected to the liquid crystal glass assembly, a backlight welding area is formed on the module FPC, a plurality of backlight pads are formed on the backlight welding area, alignment marks are provided on the left and right sides of the backlight welding area, a front blocking ink is provided in front of the backlight welding area, a rear blocking ink is provided on the rear side of the backlight welding area, the front blocking ink and the rear blocking ink are both in contact with the backlight pad, the front edge of the front blocking ink at the contact position and the rear edge of the rear blocking ink at the contact position are both located on the backlight pad, the connector of the backlight FPC is welded on the backlight welding area of ​​the module FPC, and the welding connection position is located between the front blocking ink and the rear blocking ink.

[0006] Furthermore, the width of the front barrier ink and the rear barrier ink are both 0.2 mm, and the thickness are both 20±5 um.

[0007] Furthermore, the materials of the front blocking ink and the rear blocking ink are both photosensitive green ink.

[0008] By adopting the above scheme, the beneficial effect of the utility model is that: by setting the barrier ink, the solder can be blocked, ensuring the fullness of the solder at the connection position, and after welding, the barrier ink can be used to quickly identify whether there is a problem of tin overflow, which helps to improve welding efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0010] Figure 2 This is a structural diagram of the welding point between the backlight FPC and the module FPC according to an embodiment of the present invention.

[0011] Figure 3 This is a structural diagram of the backlight welding area of ​​the module FPC implemented in one embodiment of the present invention. DETAILED DESCRIPTION

[0012] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Please refer to Figures 1 to 3 In this embodiment, the utility model provides a display module for improving the FPC welding effect, comprising: a liquid crystal glass component 1, a backlight module 2 and a module FPC 1, wherein the liquid crystal glass component 1 and the backlight module 2 are stacked, the backlight module 2 includes a backlight FPC 21, the module FPC 1 is bound and connected to the liquid crystal glass component 1, and the module FPC 1 is formed with a backlight welding area, and a plurality of backlight pads 11 are formed on the backlight welding area. Alignment marks 14 are provided on the left and right sides of the backlight welding area, which can be used for identification and alignment during automatic welding to improve the accuracy of welding alignment. A front blocking ink 12 is provided in front of the backlight welding area, and a rear blocking ink 13 is provided on the rear side of the backlight welding area. The front blocking ink 12 and the rear blocking ink 13 are both in contact with the backlight pad 11. The front edge of the front blocking ink 12 at the contact position and the rear edge of the rear blocking ink 13 at the contact position are both located on the backlight pad 11. The connector of the backlight FPC 21 is welded to the backlight welding area of ​​the module FPC 1, and the backlight pad 11 of the module FPC 1 is welded to the welding PIN on the backlight FPC 21. The welding connection position of 211 is located between the front barrier ink 12 and the rear barrier ink 13. When welding, the solder provided on the backlight pad 11 can be blocked by the front barrier ink 12 and the rear barrier ink 13 to avoid overflow. After welding is completed, it is also possible to observe whether the solder overflows and covers the front barrier ink 12 and the rear barrier ink 13 to intuitively judge whether there is a tin overflow problem. It is suitable for automatic welding and manual welding.

[0014] Furthermore, the width of the front barrier ink 12 and the rear barrier ink 13 are both 0.2 mm, and the length corresponds to covering all the backlight pads 11, and the thickness is 20±5 um. The barrier ink of this thickness can have a good blocking effect on the set solder and will not affect the welding process.

[0015] Furthermore, the materials of the front barrier ink 12 and the rear barrier ink 13 are both photosensitive green ink, which is quite different in color from solder, and can easily distinguish solder from barrier ink, making it convenient to quickly identify whether there is a tin overflow problem.

[0016] To sum up, the beneficial effect of this solution is that by setting the barrier ink, the solder can be blocked, ensuring that the solder is full at the connection position, and after welding, the barrier ink can be used to quickly identify whether there is a problem of tin overflow, which helps to improve welding efficiency and product quality.

[0017] 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 FPC welding effect, characterized in that: include: A liquid crystal glass assembly, a backlight module and a module FPC, wherein the liquid crystal glass assembly and the backlight module are stacked, the backlight module includes a backlight FPC, the module FPC is bound and connected to the liquid crystal glass assembly, a backlight welding area is formed on the module FPC, a plurality of backlight pads are formed on the backlight welding area, alignment marks are provided on the left and right sides of the backlight welding area, a front blocking ink is provided in front of the backlight welding area, a rear blocking ink is provided on the rear side of the backlight welding area, the front blocking ink and the rear blocking ink are both in contact with the backlight pad, the front edge of the front blocking ink at the contact position and the rear edge of the rear blocking ink at the contact position are both located on the backlight pad, the connector of the backlight FPC is welded on the backlight welding area of ​​the module FPC, and the welding connection position is located between the front blocking ink and the rear blocking ink.

2. The display module for improving FPC welding performance according to claim 1, wherein: The width of the front barrier ink and the rear barrier ink are both 0.2 mm, and the thickness are both 20±5 μm.

3. The display module for improving FPC welding effect according to claim 1 or 2, characterized in that: The materials of the front blocking ink and the rear blocking ink are both photosensitive green oil.