Structure capable of improving short circuit of FPC gold finger binding
By fixing a flexible printed circuit board to the side wall of the display screen and setting a square groove inside it, the gold fingers are installed in the square groove. Combined with conductive adhesive and light-shielding strips, the problems of short circuit and deformation of FPC gold fingers are solved, achieving stable electrical signal transmission and high-quality display effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGMEN SANQI NEW ENERGY CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-06-02
AI Technical Summary
In traditional designs, the gold fingers of the FPC are flush with the FPC shape, which may lead to the risk of short circuit due to overlap. In addition, the gold fingers are deformed and cannot be flattened during cutting, which increases the difficulty of the manufacturing process.
A flexible printed circuit board is fixed to the side wall of the display screen. The board has a square groove inside, and the gold fingers are installed in the square groove with a 0.05mm gap. Combined with conductive adhesive and light-shielding strip, a stable connection structure is formed to ensure accurate transmission of electrical signals and prevent light leakage.
It reduces the risk of short circuits at the connection points, avoids deformation of the gold fingers, ensures stable transmission of electrical signals, improves the clarity and vividness of the display effect, reduces light interference, and enhances the normal operation of the equipment and the visual experience.
Smart Images
Figure CN224319701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display module technology, and in particular to a structure that can improve the short circuit of FPC gold finger bonding. Background Technology
[0002] With the continuous development and innovation of the electronics industry, especially the mobile phone industry, mobile phone products now pursue high screen ratios. Therefore, the structural design of products needs to constantly explore new directions, requiring thinner and narrower bezels to achieve the requirements of high screen ratios. Consequently, the bonding pins of the panels will become smaller and smaller, thereby increasing the difficulty of the bonding process.
[0003] In traditional designs, the Bongding gold fingers are flush with the FPC outline. This may cause the FPC gold fingers to overlap and short-circuit with the Panelite circuit. Furthermore, because the FPC gold fingers are flush with the FPC outline, the FPC gold fingers will be deformed by force during the edge trimming step of the FPC manufacturing process, resulting in the gold fingers of the incoming material being wavy and unable to be trimmed flat. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a structure that improves the bonding and short-circuiting of FPC gold fingers. It solves the problem that in traditional designs, the Bongding gold fingers are flush with the FPC outline, which may cause the FPC gold fingers to overlap and short-circuit with the Panel ITO circuit. Furthermore, because the FPC gold fingers are flush with the FPC outline, the FPC gold fingers will be deformed by force during the edge trimming step of the FPC manufacturing process, resulting in the incoming gold fingers being wavy and unable to be trimmed flat.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A structure for improving short circuits in FPC gold finger bonding includes a display screen. A connecting mechanism is fixedly installed on the side wall of the display screen. The connecting mechanism includes a flexible printed circuit board, a square groove, and gold fingers. The flexible printed circuit board is fixedly installed on the side wall of the display screen. The square groove is formed inside the flexible printed circuit board and has a depth of 0.05 mm. The gold fingers are fixedly installed inside the square groove.
[0007] Preferably, a first conductive adhesive is fixedly installed on the top of the display screen, and a square groove is fixedly installed on the top of the first conductive adhesive.
[0008] Preferably, a gold finger is fixedly installed on the top of the square groove, and a third light-shielding strip is fixedly installed on the top of the gold finger.
[0009] Preferably, a POL polarizer is fixedly installed on the top of the third light-shielding strip, and a second light-shielding strip is fixedly installed on the top of the POL polarizer.
[0010] Preferably, an LED LCD screen is fixedly installed on the top of the second light-shielding strip.
[0011] Preferably, a touch screen is fixedly installed on the top of the LED LCD display screen.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The flexible printed circuit board is firmly fixed to the side wall of the display screen, providing a stable foundation for subsequent connections and functional implementation. The square groove is opened inside the flexible printed circuit board. When the gold fingers are fixedly installed inside the square groove, a tight and reliable connection structure is formed, which can ensure stable and accurate electrical signal transmission between various components and avoid signal interruption or distortion caused by poor connection. The design of reserving a 0.05mm gap can reduce the risk of short circuit when overlapping with the panel, and can also prevent the gold fingers from deforming when the FPC is cut at the edge.
[0014] Second, the first conductive adhesive is placed between the display screen and the square slot to ensure efficient and accurate transmission of electrical signals, prevent loosening or disconnection of the connection, adapt to special shapes and limited spaces, make assembly more convenient and efficient, and can be adapted to different types and specifications of components. The gold fingers and the second light-shielding strip can effectively block the leakage of light, enhance the contrast of the image, improve the clarity and vividness of the display effect, prevent the leakage of light from interfering with the surrounding environment or other components, ensure the normal operation of the equipment and the visual experience, reduce the scattering and diffusion of light, make the colors of the image more accurate and vivid, and improve the overall image quality. Attached Figure Description
[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a structural diagram of the flexible printed circuit board of this utility model;
[0018] Figure 3 For the present utility model Figure 1 A magnified structural diagram is shown in section A.
[0019] Figure 4 For the present utility model Figure 2 The enlarged structural diagram is shown in section B.
[0020] Legend: 11. Display screen; 12. Flexible printed circuit board; 13. Square groove; 14. Gold finger; 15. Third light-shielding strip; 16. POL polarizer; 17. Second light-shielding strip; 18. LED LCD display screen; 19. Touch screen; 21. First conductive adhesive. Detailed Implementation
[0021] This application provides a structure that improves the bonding and short-circuiting of FPC gold fingers. It effectively solves the problem of traditional designs where the bounding gold fingers are flush with the FPC outline, which may cause short circuits between the FPC gold fingers and the Panel ITO circuitry. Furthermore, because the FPC gold fingers are flush with the FPC outline, they deform under stress during the edge trimming step of the FPC manufacturing process, resulting in wavy gold fingers that cannot be trimmed flat. The flexible printed circuit board is firmly fixed to the side wall of the display screen, providing a stable foundation for subsequent connections and functional implementation. A square groove is formed inside the flexible printed circuit board. When the gold fingers are fixedly installed inside the groove, a tight and reliable connection structure is formed, ensuring stable and accurate electrical signal transmission between components and avoiding signal interruption or distortion due to poor connection. The 0.05mm gap design allows for connection with the Panel ITO circuitry. The risk of short circuits at panel overlaps can be reduced, and deformation of the gold fingers caused by edge cutting of the FPC can be avoided. The first conductive adhesive is placed between the display screen and the square slot to ensure efficient and accurate transmission of electrical signals, prevent loosening or disconnection of connections, adapt to special shapes and limited spaces, making assembly more convenient and efficient, and compatible with different types and specifications of components. The gold fingers and the second light-shielding strip can effectively block leaked light, enhance image contrast, improve the clarity and vividness of the display effect, prevent leaked light from interfering with the surrounding environment or other components, ensure the normal operation of the equipment and visual experience, reduce light scattering and diffusion, make the image colors more accurate and vivid, and improve the overall image quality.
[0022] Example
[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application effectively solves the problem that in traditional designs, the gold fingers of the Bongding circuit are designed to be flush with the FPC shape, which may cause short circuits between the FPC gold fingers and the Pane ITO circuit. Furthermore, because the FPC gold fingers are flush with the FPC shape, they deform under stress during the edge trimming step of the FPC manufacturing process, resulting in wavy gold fingers that cannot be trimmed flat. The overall idea is as follows: A structure that can improve the bonding short circuit of FPC gold fingers includes a display screen 11 (a flexible printed circuit board for the display screen). A connecting mechanism is fixedly installed on the side wall of the display screen 11. The connecting mechanism includes a flexible printed circuit board 12, a square groove 13, and gold fingers 14 (touch fingers with gold or other highly conductive metal plated at one end of the edge of the flexible printed circuit board). The flexible printed circuit board 12 is fixed... Installed on the side wall of the display screen 11, a square groove 13 is formed inside the flexible printed circuit board 12. The depth of the square groove 13 is 0.05 mm. The gold fingers 14 are fixedly installed inside the square groove 13. The flexible printed circuit board 12 is firmly fixed to the side wall of the display screen 11, providing a stable foundation for subsequent connection and function implementation. The square groove 13 is formed inside the flexible printed circuit board 12. When the gold fingers 14 are fixedly installed inside the square groove 13, a tight and reliable connection structure is formed, which can ensure stable and accurate electrical signal transmission between various components and avoid signal interruption or distortion caused by poor connection. The design of reserving a 0.05 mm gap can reduce the risk of short circuit when overlapping with the panel, and can also prevent the gold fingers from deforming when the FPC is cut at the edge.
[0024] A first conductive adhesive 21 is fixedly installed on the top of the display screen 11. A square groove 13 is fixedly installed on the top of the first conductive adhesive 21. A gold finger 14 is fixedly installed on the top of the square groove 13. A third light-shielding strip 15 is fixedly installed on the top of the gold finger 14. A POL polarizer 16 is fixedly installed on the top of the third light-shielding strip 15. A second light-shielding strip 17 is fixedly installed on the top of the POL polarizer 16. An LED LCD display screen 18 is fixedly installed on the top of the second light-shielding strip 17. The first conductive adhesive 21 is placed between the display screen 11 and the square groove 13 to ensure efficient and accurate transmission of electrical signals, prevent loosening or disconnection of connections, adapt to special shapes and limited spaces, make assembly more convenient and efficient, and adapt to different types and specifications of components. The gold finger 14 and the second light-shielding strip 17 can effectively block leaked light, enhance image contrast, improve the clarity and vividness of the display effect, prevent leaked light from interfering with the surrounding environment or other components, ensure the normal operation of the equipment and visual experience, reduce light scattering and diffusion, make the image colors more accurate and vivid, and improve the overall image quality.
[0025] The LED LCD display screen 18 has a touch screen 19 fixedly mounted on top, providing physical protection for objects below, preventing scratches, collisions and dust from entering, thereby extending its service life.
[0026] To address the problems existing in the prior art, this utility model provides a structure that improves the short circuit of FPC gold finger bonding. The flexible printed circuit board 12 is firmly fixed to the side wall of the display screen 11, providing a stable foundation for subsequent connection and functional implementation. The square groove 13 is formed inside the flexible printed circuit board 12. When the gold fingers 14 are fixedly installed inside the square groove 13, a tight and reliable connection structure is formed, which can ensure stable and accurate electrical signal transmission between various components and avoid signal interruption or distortion caused by poor connection. The design with a reserved 0.05mm gap can be used with the panel. The risk of short circuits at the panel overlap can be reduced, and deformation of the gold fingers caused by edge cutting of the FPC can also be avoided. The first conductive adhesive 21 is placed between the display screen 11 and the square groove 13 to ensure efficient and accurate transmission of electrical signals, prevent loosening or disconnection of the connection, adapt to special shapes and limited spaces, make assembly more convenient and efficient, and can be adapted to different types and specifications of components. The gold fingers 14 and the second light-shielding strip 17 can effectively block the leakage of light, enhance the contrast of the image, improve the clarity and vividness of the display effect, prevent the leakage of light from interfering with the surrounding environment or other components, ensure the normal operation of the equipment and visual experience, reduce the scattering and diffusion of light, make the colors of the image more accurate and vivid, and improve the overall image quality.
[0027] Working principle:
[0028] In the first step, the flexible printed circuit board 12 is firmly fixed to the side wall of the display screen 11, providing a stable foundation for subsequent connection and function implementation. The square groove 13 is opened inside the flexible printed circuit board 12. When the gold fingers 14 are fixedly installed inside the square groove 13, a tight and reliable connection structure is formed, which can ensure stable and accurate electrical signal transmission between various components and avoid signal interruption or distortion caused by poor connection. The design of reserving a 0.05mm gap can reduce the risk of short circuit when overlapping with the panel, and can also prevent the gold fingers from deforming when the FPC is cut at the edge.
[0029] In the second step, the first conductive adhesive 21 is placed between the display screen 11 and the square groove 13, which can ensure the efficient and accurate transmission of electrical signals, prevent loosening or disconnection of the connection, adapt to special shapes and limited spaces, make assembly more convenient and efficient, and can also be adapted to different types and specifications of components. The gold fingers 14 and the second light-shielding strip 17 can effectively block the leakage of light, enhance the contrast of the image, improve the clarity and vividness of the display effect, prevent the leakage of light from interfering with the surrounding environment or other components, ensure the normal operation of the equipment and the visual experience, reduce the scattering and diffusion of light, make the colors of the image more accurate and vivid, and improve the overall image quality.
[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A structure for improving short circuits in FPC gold finger bonding, comprising a display screen (11), characterized in that, A connecting mechanism is fixedly installed on the side wall of the display screen (11). The connecting mechanism includes a flexible printed circuit board (12), a square groove (13), and a gold finger (14). The flexible printed circuit board (12) is fixedly installed on the side wall of the display screen (11). The square groove (13) is opened inside the flexible printed circuit board (12). The depth of the square groove (13) is 0.05 mm. The gold finger (14) is fixedly installed inside the square groove (13).
2. The structure for improving FPC gold finger bonding short circuit as described in claim 1, characterized in that, The top of the display screen (11) is fixedly installed with a first conductive adhesive (21); The first conductive adhesive (21) has a square groove (13) fixedly installed on its top.
3. The structure for improving FPC gold finger bonding short circuit as described in claim 2, characterized in that, A gold finger (14) is fixedly installed on the top of the square groove (13); The gold finger (14) is fixedly installed with a third light-shielding strip (15) on its top.
4. The structure for improving FPC gold finger bonding short circuit as described in claim 3, characterized in that, A POL polarizer (16) is fixedly installed on the top of the third light-shielding strip (15); The POL polarizer (16) is fixedly mounted with a second light-shielding strip (17) on its top.
5. The structure for improving FPC gold finger bonding short circuit as described in claim 4, characterized in that, An LED LCD screen (18) is fixedly installed on the top of the second light-shielding strip (17).
6. The structure for improving FPC gold finger bonding short circuit as described in claim 5, characterized in that, A touch screen (19) is fixedly installed on the top of the LED LCD display (18).