Flexible printed circuit (FPC) with higher precision of binding positioning golden finger horizontal mark

Abstract

The utility model discloses an FPC (Flexible Printed Circuit) with higher binding positioning golden finger horizontal mark precision. The FPC comprises a display module and an FPC, an FPC binding position is arranged in the center of the bottom of the front surface of the display module; the FPC comprises a circuit board, an auxiliary connecting plate is arranged on the top of the front face of the circuit board, a metal PIN is arranged on the auxiliary connecting plate, and the difference between the highest point of the front face of the auxiliary connecting plate and the highest point of the metal PIN is 0.1 mm. According to the FPC with the binding positioning golden finger transverse mark higher in precision, through the height difference between the auxiliary connecting plate and the metal PIN designed on the auxiliary connecting plate, it can be guaranteed that a copper block in the metal PIN cannot be punched from cutting, the tolerance from the top end of the metal PIN to the alignment transverse mark only remains the tolerance of circuit etching, the tolerance is within 0.03 and is compared with the tolerance 0.1 of punching in an old design, and the cost is reduced. And the precision is obviously improved, so that the problem of short circuit of binding and lapping wires can be thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC, in particular to an FPC with higher accuracy of the horizontal label of the binding positioning gold finger. Background Art

[0002] At present, the design accuracy requirements for various components of wearable electronic products are getting higher and higher. The traditional method has poor accuracy. The gold finger is made to the edge, so the traces designed by the supplier will be pulled outside the board. No matter how much the punching is offset, the copper will be punched. Moreover, the punching accuracy will reach ±0.1, resulting in unevenness here during laser punching in the sample stage, which affects the binding, and there is a risk of short circuit due to wire bridging during binding. Therefore, the design of the binding positioning gold finger is optimized to improve the accuracy, product yield and competitiveness. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an FPC with higher accuracy of the horizontal label of the binding positioning gold finger.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] An FPC with higher accuracy of the horizontal label of the binding positioning gold finger, comprising: a display module and an FPC; a binding positioning for the FPC is provided at the center of the bottom of the front surface of the display module; the FPC includes a circuit board, an auxiliary connection board is provided at the top of the front surface of the circuit board, a metal PIN is provided on the auxiliary connection board, and the difference between the highest point on the front surface of the auxiliary connection board and the highest point of the metal PIN is 0.1 mm; the FPC and the display module are connected to each other through the binding positioning for the FPC and the metal PIN.

[0006] In one embodiment, the binding positioning for the FPC is provided at the center of the bottom of the front surface of the display module, and the length of the front surface of the binding positioning for the FPC is adapted to the length of the front surface of the metal PIN.

[0007] In one embodiment, the auxiliary connection board is provided at the center of the top of the front surface of the circuit board, and the length of the front surface of the auxiliary connection board is adapted to the length of the front surface of the binding positioning for the FPC.

[0008] In one embodiment, the metal PIN is provided at the center of the top of the front surface of the auxiliary connection board, and the shape and size of the front surface of the metal PIN are adapted to the shape and size of the front surface of the binding positioning for the FPC.

[0009] In one embodiment, the circuit board is a flexible circuit board, and the shape and size of the front surface of the circuit board are adapted to the shape and size of the front surface of the display module.

[0010] In one embodiment, the auxiliary connection board is enlarged by 0.1 mm in terms of its original shape, and the distance between the upper end of the metal PIN and the horizontal mark is between 0.19 mm ± 0.03 mm.

[0011] In one embodiment, the shapes of the FPC binding position and the side of the auxiliary connection board that are close to each other are both smooth straight line designs.

[0012] In one embodiment, an IC is provided at the bottom of the center of the front side of the display module, and the IC is located on top of the FPC binding position.

[0013] In one embodiment, the corners on the outer shell of the display module are all rounded.

[0014] In one embodiment, the board body at the position where the metal PIN is provided on the auxiliary connection board is a rigid circuit board.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The FPC with a higher precision of the binding position gold finger horizontal mark of the present utility model can ensure that the copper block in the metal PIN will not be punched during cutting through the height difference between the auxiliary connection board and the metal PIN designed thereon. Moreover, the tolerance from the top of the metal PIN to the alignment horizontal mark only remains the tolerance of the circuit etching, which is within 0.03, and compared with the punching tolerance of 0.1 in the old design, the precision has been significantly improved, thus completely solving the problem of binding wire short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall front structure of the FPC with a higher precision of the binding position gold finger horizontal mark of the present utility model;

[0019] Figure 2 It is a schematic diagram of the overall front structure of the display module of the FPC with a higher precision of the binding position gold finger horizontal mark of the present utility model;

[0020] Figure 3 It is a schematic diagram of the overall front structure of the FPC of the FPC with a higher precision of the binding position gold finger horizontal mark of the present utility model.

[0021] In the figure: 1. Display module; 11. FPC binding position; 12. IC; 2. FPC; 21. Circuit board; 22. Metal PIN; 23. Auxiliary connection board. Detailed implementation manners

[0022] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present utility model can be understood more thoroughly and comprehensively.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0024] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] As Figures 1-3 shown, an FPC with higher precision of the binding position gold finger horizontal mark includes: a display module 1 and an FPC 2; an FPC binding position 11 is arranged at the center of the bottom of the front of the display module 1; the FPC 2 includes a circuit board 21, an auxiliary connection board 23 is arranged at the top of the front of the circuit board 21, a metal PIN 22 is arranged on the auxiliary connection board 23, and the difference between the highest point of the front of the auxiliary connection board 23 and the highest point of the metal PIN 22 is 0.1 mm. It should be noted that each copper block on the FPC binding position 11 corresponds to the position of each metal block on the metal PIN 22 and fits in size.

[0027] As shown in Figures 1-3 Figure [0000063], in one embodiment, the FPC 2 and the display module 1 are interconnected through the FPC bonding position 11 and the metal PIN 22. The FPC bonding position 11 is provided at the center of the bottom of the front side of the display module 1, and the length of the front side of the FPC bonding position 11 is adapted to the length of the front side of the metal PIN 22. The auxiliary connection board 23 is provided at the center of the top of the front side of the circuit board 21, and the length of the front side of the auxiliary connection board 23 is adapted to the length of the front side of the FPC bonding position 11. The metal PIN 22 is provided at the center of the top of the front side of the auxiliary connection board 23, and the shape and size of the front side of the metal PIN 22 are adapted to the shape and size of the front side of the FPC bonding position 11. It should be noted that the sizes and models of the FPC bonding position 11 and the metal PIN 22 need to be uniformly set before production.

[0028] As shown in Figures 1-3 Figure [0000066], in one embodiment, the circuit board 21 is a flexible circuit board, and the shape and size of the front side of the circuit board 21 are adapted to the shape and size of the front side of the display module 1. It should be noted that the circuit board 21 can be bent to the back of the display module 1.

[0029] As shown in Figures 1-3 Figure [0000069], in one embodiment, the auxiliary connection board 23 is enlarged by 0.1 mm on the original outer shape, and the distance between the upper end of the metal PIN 22 and the horizontal mark is between 0.19 mm ± 0.03 mm. It should be noted that this design can completely solve the problem of binding wire short circuit during punching of the metal PIN 22.

[0030] As shown in Figures 1-3 Figure [0000072], in one embodiment, the shapes of the mutually adjacent sides of the FPC bonding position 11 and the auxiliary connection board 23 are both smooth straight line designs. It should be noted that this design facilitates the connection between the metal PIN 22 on the FPC bonding position 11 and the auxiliary connection board 23.

[0031] As shown in Figures 1-3 Figure [0000075], in one embodiment, an IC 12 is provided at the bottom of the center of the front side of the display module 1, and the IC 12 is located on top of the FPC bonding position 11. It should be noted that an IC bonding position is provided at the bottom of the center of the front side of the display module 1.

[0032] As shown in Figures 1-3 Figure [0000078], in one embodiment, the corners on the outer shell of the display module 1 are all rounded. The board body at the position where the metal PIN 22 is provided on the auxiliary connection board 23 is a rigid circuit board. It should be noted that this design facilitates the connection between the FPC 2 and the display module 1.

[0033] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An FPC with higher precision of gold finger horizontal marking of binding position, characterized in that: include: Display module (1) and FPC (2); An FPC binding position (11) is arranged at the center of the bottom of the front side of the display module (1); The FPC (2) comprises a circuit board (21), an auxiliary connecting plate (23) is arranged on the top of the front side of the circuit board (21), a metal PIN (22) is arranged on the auxiliary connecting plate (23), and the difference between the highest point of the front side of the auxiliary connecting plate (23) and the highest point of the metal PIN (22) is 0.1 mm; The FPC (2) and the display module (1) are connected to each other via the FPC binding position (11) and the metal PIN (22).

2. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The FPC binding position (11) is arranged at the center of the bottom of the front side of the display module (1), and the length of the front side of the FPC binding position (11) matches the length of the front side of the metal PIN (22).

3. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The auxiliary connecting plate (23) is arranged at the center of the top of the front side of the circuit board (21), and the length of the front side of the auxiliary connecting plate (23) is adapted to the length of the front side of the FPC binding position (11).

4. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The metal PIN (22) is arranged at the center of the top of the front side of the auxiliary connecting plate (23), and the shape and size of the front side of the metal PIN (22) are compatible with the shape and size of the front side of the FPC binding position (11).

5. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The circuit board (21) is a flexible circuit board, and the shape and size of the front side of the circuit board (21) are compatible with the shape and size of the front side of the display module (1).

6. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The auxiliary connecting plate (23) is enlarged by 0.1 mm on the original base shape, and the distance between the upper end of the metal PIN (22) and the horizontal mark is between 0.19 mm ± 0.03 mm.

7. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The shapes of the FPC binding position (11) and the auxiliary connecting plate (23) on the side close to each other are both smooth straight line designs.

8. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: An IC (12) is arranged at the bottom of the center of the front face of the display module (1), and the IC (12) is located on the top of the FPC binding position (11).

9. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1 is characterized in that: The corners on the outer shell of the display module (1) are all rounded.

10. The FPC with higher horizontal marking accuracy of the binding position gold finger according to claim 1, characterized in that: The plate body of the auxiliary connecting plate (23) at the position where the metal PIN (22) is arranged is a hard circuit board.

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