CN217088238U

CN217088238U - Interface structure and display device of flexible circuit board

Info

Publication number: CN217088238U
Application number: CN202220449043.8U
Authority: CN
Inventors: 冯名浩; 韩亚君
Original assignee: InfoVision Optoelectronics Kunshan Co Ltd
Current assignee: InfoVision Optoelectronics Kunshan Co Ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-07-29
Anticipated expiration: 2032-03-03

Abstract

The utility model discloses an interface structure and display device of flexible circuit board, flexible circuit board's one end is inserted interface structure, interface structure includes: the interface substrate is provided with a plurality of sawtooth-shaped grooves on one surface; the flexible circuit boards are in communication connection through the signal lines on the interface structure; the interface structure further includes: and the magnetic absorption layer is arranged on the other surface of the interface substrate, which is back to the plurality of saw-toothed grooves, and is used for absorbing the two interface structures together during communication connection. Therefore, crosstalk between adjacent signal lines can be effectively prevented, the testing efficiency in a frequent testing scene is improved, and the service life of the flexible circuit board is prolonged.

Description

Interface structure and display device of flexible circuit board

Technical Field

The utility model relates to a show technical field, in particular to flexible circuit board's interface structure and display device.

Background

Flexible Printed Circuit (FPC) is a highly reliable Flexible Printed Circuit board made of polyimide or polyester film as a base material, and is used in the field of consumer electronics, and not only can be used for carrying line components, but also can be used as a wire connector in engineering tests, and the interface design of the FPC is usually in a form of in-line signal line (pin) or a form of part patch. When testing, the connection between the flexible circuit board of the tested equipment and the flexible circuit board of the testing equipment is through plugging or pressing, and a corresponding female head is needed, so that the plugging is time-consuming in the occasion of frequent testing, and certain vulnerability is also provided.

When the existing flexible circuit board needs to be switched, in order to prevent connection fracture and ensure welding reliability, the female head is usually borne on a PCB hard board, so that various switching boards need to be manufactured for matching use in a product testing process, the cost is high, a new interface structure needs to be provided, and the existing use condition is improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide an interface structure and a display device of a flexible circuit board, so as to effectively prevent crosstalk between adjacent signal lines, improve test efficiency in frequent test scenes, and prolong the service life of the flexible circuit board.

According to an aspect of the utility model provides an interface structure of flexible circuit board, flexible circuit board's one end is inserted interface structure, interface structure includes: the interface substrate is provided with a plurality of sawtooth-shaped grooves on one surface; and the signal wires are arranged on at least one side surface of the sawtooth-shaped grooves, and the flexible circuit boards are in communication connection through the signal wires on the interface structure.

Optionally, the interface structure further includes: and the magnetic absorption layer is arranged on the other surface of the interface substrate, which is back to the plurality of saw-toothed grooves, and is used for absorbing the two interface structures together during communication connection.

Optionally, two sides of the plurality of saw-tooth grooves are parallelograms with a certain angle and equal length and width.

Optionally, the flexible circuit board comprises: a substrate layer; and a routing layer located above the substrate layer.

Optionally, the interface structure further includes: and the metal conducting layer is positioned in the interface substrate and is used for realizing the electric connection between the wiring layer of the flexible circuit board and the plurality of signal wires.

Optionally, openings are formed in two sides of the zigzag groove, and the metal conductive layer electrically connects the routing layer and the signal line through the openings.

Optionally, the interface structure further includes: and the shell protective layer is positioned on the outermost side of the interface substrate and used for protecting the interface structure.

Optionally, the signal line is a copper line.

Optionally, the signal line is integrally formed with the metal conductive layer.

According to another aspect of the present invention, there is provided a display device, the display device including: a display panel; a control panel; and the flexible circuit board is used for connecting the display panel and the control panel, and comprises the interface structure of the flexible circuit board.

The utility model provides an interface structure and display device of flexible circuit board sets up many signal lines through at least one side at a plurality of zigzag groove of interface substrate, has effectively prevented the crosstalk between the adjacent signal line to utilize the inside magnetism of interface substrate to inhale the adsorption characteristic on layer, contact and split interface structure, improved efficiency of software testing in the scene that needs frequently tested, prolonged flexible circuit board's life.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 shows a top view of an interface structure of a flexible circuit board according to an embodiment of the present invention;

fig. 2 shows a cross-sectional view of an interface substrate along line AA of fig. 1 in accordance with an embodiment of the present invention;

FIG. 3 illustrates a cross-sectional view of an interface structure contact of a flexible circuit board according to the prior art;

fig. 4 a-4 c show schematic diagrams of interface structure contacts of a flexible circuit board according to an embodiment of the invention;

fig. 5 is a schematic diagram illustrating an interface structure of a flexible circuit board according to an embodiment of the present invention being adsorbed by a magnetic attraction layer;

fig. 6 a-6 b show schematic connection diagrams of an interface structure and a flexible circuit board according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating the interface structure of the flexible circuit board forming the signal line according to the embodiment of the present invention.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In the various figures, the same elements or modules are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

It should be understood that certain terms are used throughout the following description and claims to refer to particular components. As one of ordinary skill in the art will appreciate, manufacturers may refer to a component by different names. This patent specification and claims do not intend to distinguish between components that differ in name but not function.

Moreover, it is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Fig. 1 shows a top view of an interface structure of a flexible circuit board according to an embodiment of the present invention, fig. 2 shows a cross-sectional view of an interface substrate along the line of fig. 1AA according to an embodiment of the present invention, as shown in fig. 1 and fig. 2, one end of the flexible circuit board 100 is inserted into the interface structure 110, and the interface structure 110 includes an interface substrate 111 and a plurality of signal lines 112. In practical applications, the interface structures 110 may be disposed at two ends of the flexible circuit board 100, respectively, according to requirements.

The shape of the interface structure 110 in fig. 1 is a rectangle, but the shape of the interface structure 110 is not limited to a rectangle, and may be an ellipse or other corresponding shapes as required, and the present invention is not limited in detail. The back surface of the interface substrate 111 is a flat surface and the front surface is provided with a plurality of saw-toothed grooves 113 as shown in fig. 1 and 2. Each saw-toothed groove 113 is formed by two parallelograms with a certain angle a1 and equal length and width, and the angle a1 between the two parallelograms can be adjusted according to actual needs. The plurality of signal lines 112 are respectively embedded on at least one side surface of the plurality of serrated grooves 113, for example, one signal line 112 is embedded on both sides of each serrated groove 113. The flexible circuit boards 100 are communicatively coupled to each other via a plurality of signal lines 112 on the interface structure 110. The engagement characteristic of the saw-toothed groove 113 ensures that no shift effect occurs between the signal lines 112, and the shift effect is a short circuit effect caused by too small a distance between the signal lines 112 when there are more signal lines 112. Further, the material of the plurality of signal lines 112 may be copper lines.

Fig. 3 is a cross-sectional view illustrating the interface structure contact of the flexible circuit board according to the prior art, and as shown in fig. 3, the signal lines 122 are flatly disposed on the interface substrate 121, when two flexible circuit boards 100 are connected in a communication manner, because the signal lines 122 have a small volume, the alignment precision between the signal lines 122 is poor, and the problem of micro short circuit between adjacent signal lines 122 is easily caused.

Fig. 4a to 4c are schematic diagrams illustrating the contact of the interface structures of the flexible circuit board according to an embodiment of the present invention, as shown in fig. 4a, when communication connection is required, the two interface structures 110 move in the direction of the arrow in the figure, so that the zigzag grooves 113 on the two interface structures 110 are engaged with each other. Referring to fig. 4b and 4c, when the two flexible circuit boards 100 are conducted, the zigzag grooves 113 on the interface structures 110 of the two flexible circuit boards 100 are in a mutually meshed state, so that the signal lines 112 that are effectively conductive on the interface structures 110 of the two flexible circuit boards 100 can be in one-to-one correspondence, thereby increasing the contact performance between the signal lines 112 that are effectively conductive on the interface structures 110 of the two flexible circuit boards 100 and simultaneously preventing crosstalk between adjacent signal lines 112.

Further, fig. 5 shows that according to the utility model discloses the interface structure of flexible circuit board inhales the adsorbed schematic diagram of layer through magnetism, as shown in fig. 5, interface structure 110 still includes magnetism and inhales layer 114, and magnetism is inhaled layer 114 and is located interface substrate 111's back inboard, and magnetism is inhaled layer 114 and is used for closely combining two flexible circuit board 100's interface structure 110 when two flexible circuit board 100 carry out communication connection for many signal lines 112 on two flexible circuit board 100's the interface structure 110 can the one-to-one, thereby accomplish signal transmission. The magnetic attraction layer 114 is made of a magnetic material having an attraction property, and the magnetic material may be a ferrite magnet, an alnico magnet, an iron-chromium-cobalt magnet, or the like. The magnetic attraction layer 114 is utilized to make the interface structure 110 be convenient and fast to contact and detach, and is not easy to damage.

Fig. 6a to 6b show connection schematic diagrams of the interface structure and the flexible circuit board according to an embodiment of the present invention, and as shown in fig. 6a to 6b, the flexible circuit board 100 includes a substrate layer 117 and a routing layer 116 on the substrate layer 117. The interface structure 110 also includes a metallic conductive layer 115 and a housing protective layer 118. The metal conductive layer 115 is located on the other side of the saw-toothed groove 113 opposite to the signal line 112, and is used for electrically connecting the signal line 112 and the interface substrate 111. The housing protection layer 118 is located at the outermost side of the interface substrate 111 for protecting the interface structure 110.

Further, the housing protection layer 118 may be made of a plastic material with high temperature resistance and corrosion resistance and stable and good physical and mechanical properties.

Further, the routing layer 116 and the substrate layer 117 in the flexible circuit board 100 are located between the metal conductive layer 115 and the magnetic attraction layer 114 in the interface structure 110. A metal conductive layer 115 is built on a pad of the routing layer 116 in the form of a patch for electrically connecting the routing layer 116 with the signal line 112.

Further, an opening is provided on a side surface of the indented groove 113, and the metal conductive layer 115 electrically connects the wiring layer 116 to the signal line 112 through the opening.

Further, a metal may be deposited downward through the openings on both sides of the zigzag groove 113 by, for example, physical vapor deposition to form the metal conductive layer 115.

Further, the metal conductive layer 115 may also be formed using a liquid process. Fig. 7 shows a schematic diagram of forming signal lines according to the interface structure of the flexible circuit board of the present invention, and as shown in fig. 7, the signal lines 112 can be formed on both sides of the zigzag groove 113 by converting the angle of the interface substrate 111 while the metal conductive layer 115 is formed, so as to ensure that the signal lines 112 are not affected by each other, and at this time, the signal lines 112 and the metal conductive layer 115 are formed by using the same kind of conductive material.

The utility model provides an interface structure 110 of flexible circuit board 100 sets up many signal lines 112 through at least one side at a plurality of zigzag groove 113, has effectively prevented crosstalk between the adjacent signal line 112 to utilize the inside magnetism of interface substrate 111 to inhale the absorption characteristic of layer 114, contact and split interface structure 110, improved efficiency of software testing in the scene that needs frequent test, prolonged flexible circuit board 100's life.

The utility model also provides a display device, display device includes: a display panel for displaying an image; the control panel is used for controlling the display panel to display images; and a flexible circuit board for connecting the display panel and the control board, wherein the flexible circuit board comprises the interface structure.

It should be noted that as used herein, the words "during", "when" and "when … …" in relation to the operation of a circuit are not strict terms indicating an action that occurs immediately upon the start of a startup action, but rather there may be some small but reasonable delay or delays, such as various transmission delays, between it and the reaction action (action) initiated by the startup action. The words "about" or "substantially" are used herein to mean that the value of an element (element) has a parameter that is expected to be close to the stated value or position. However, as is well known in the art, there is always a slight deviation that makes it difficult for the value or position to be exactly the stated value. It has been well established in the art that a deviation of at least ten percent (10%) for a semiconductor doping concentration of at least twenty percent (20%) is a reasonable deviation from the exact ideal target described. When used in conjunction with a signal state, the actual voltage value or logic state (e.g., "1" or "0") of the signal depends on whether positive or negative logic is used.

In accordance with the present invention, as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The scope of the present invention should be determined by the appended claims and their equivalents.

Claims

1. An interface structure of a flexible circuit board, one end of the flexible circuit board being inserted into the interface structure, the interface structure comprising:

the interface substrate is provided with a plurality of sawtooth-shaped grooves on one surface; and

and the flexible circuit boards are in communication connection through the signal lines on the interface structure.

2. The interface structure of a flexible circuit board according to claim 1, further comprising:

and the magnetic absorption layer is arranged on the other surface of the interface substrate, which is back to the plurality of saw-toothed grooves, and is used for absorbing the two interface structures together during communication connection.

3. The interface structure of a flexible circuit board according to claim 1, wherein two sides of the plurality of saw-tooth grooves are parallelograms having a certain angle and equal length and width.

4. The interface structure of the flexible circuit board according to claim 2, wherein the flexible circuit board comprises:

a substrate layer; and

and the wiring layer is positioned on the substrate layer.

5. The interface structure of a flexible circuit board according to claim 4, further comprising:

and the metal conducting layer is positioned in the interface substrate and is used for realizing the electric connection between the wiring layer of the flexible circuit board and the plurality of signal wires.

6. The interface structure of claim 5, wherein openings are formed on both sides of the saw-tooth groove, and the metal conductive layer electrically connects the routing layer and the signal line through the openings.

7. The interface structure of a flexible circuit board according to claim 6, further comprising:

and the shell protective layer is positioned on the outermost side of the interface substrate and used for protecting the interface structure.

8. The interface structure of a flexible circuit board according to claim 6, wherein said signal line is a copper line.

9. The interface structure of a flexible circuit board according to claim 6, wherein said signal line is formed integrally with said metal conductive layer.

10. A display device, characterized in that the display device comprises:

a display panel;

a control panel; and

a flexible circuit board for connecting the display panel and the control board, the flexible circuit board including an interface structure of the flexible circuit board as claimed in any one of claims 1 to 9.