CN217509109U - Flexible circuit board - Google Patents
Flexible circuit board Download PDFInfo
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- CN217509109U CN217509109U CN202221024562.6U CN202221024562U CN217509109U CN 217509109 U CN217509109 U CN 217509109U CN 202221024562 U CN202221024562 U CN 202221024562U CN 217509109 U CN217509109 U CN 217509109U
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Abstract
The utility model discloses a flexible circuit board, which comprises a substrate, a conductive film and an annular ground wire, wherein the conductive film is arranged on the substrate and comprises a conductive circuit; the annular ground wire is arranged on the substrate and surrounds the periphery of the conducting circuit, the annular ground wire is electrically connected with the conducting circuit, the annular ground wire is also used for being electrically connected with the static electricity releasing structure so as to release static electricity, and the annular ground wire is of a semi-closed annular structure. This flexible circuit board not only can drop the static discharge on the conducting wire among the flexible circuit board, can also block outside static and conduct to on the conducting wire to can prevent that the conducting wire from being damaged by the static hit.
Description
Technical Field
The application relates to the technical field of circuit processing, in particular to a flexible circuit board.
Background
A Flexible Printed Circuit Board (FPC) is a Printed Circuit made of a Flexible insulating substrate, and has many advantages that a rigid Printed Circuit Board does not have. In the processing of the flexible circuit board, the flexible circuit board can be obtained by a series of post-processing procedures such as electroplating, alignment, exposure, film pasting, etching, film tearing, curing, nickel gold deposition, electrical measurement and the like on a base material.
However, static electricity is generated in some processes during the processing of the flexible printed circuit board, such as exposure, film sticking, film tearing, electrical measurement, or when a jig is externally connected. Because static has the characteristic of point discharge, and the conducting wire in the flexible circuit board is very thin, is usually 3um ~ 15um, consequently, receives the electrostatic shock easily to lead to the flexible circuit board dysfunction.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application discloses flexible circuit board not only can fall the static discharge on the conducting wire among the flexible circuit board, can also block that outside static conducts to on the conducting wire to can prevent that the conducting wire from being hindered by the static shock.
In order to achieve the above object, an embodiment of the present application discloses a flexible circuit board, including:
a substrate;
a conductive film disposed on the substrate, the conductive film including a conductive line;
the annular ground wire is arranged on the substrate and surrounds the periphery of the conducting circuit, is electrically connected with the conducting circuit, and is also used for being electrically connected with the static electricity releasing structure so as to release static electricity;
the annular ground wire is of a semi-closed annular structure.
In one possible implementation, the annular ground wire includes a first end portion and a second end portion disposed on the substrate in a staggered manner, and the first end portion and the second end portion have an opening therebetween, so that the annular ground wire forms the semi-closed ring structure.
In this embodiment, since the annular ground line is disposed on the substrate and surrounds the periphery of the conductive line, the annular ground line can prevent static electricity outside the annular ground line from being introduced into the conductive line, so that the risk of the conductive line being damaged by the static electricity can be reduced. In addition, the annular ground wire is electrically connected with the conductive circuit and is also used for being electrically connected with the electrostatic discharge structure, so that the static electricity on the conductive circuit can be discharged through the electrostatic discharge structure, and the conductive circuit can be better prevented from being damaged by the static electricity.
It is thus clear that the flexible circuit board that this application provided, on the one hand, can block outside static of ring ground outside ring ground through ring ground, play the effect that prevents outside static and get into the conducting wire, on the other hand, can also pass through static electricity discharge structure release with the static of conducting wire self through ring ground. Therefore, the conductive circuit can be well prevented from being damaged by static electricity.
The annular ground wire is of a semi-closed annular structure, so that compared with a closed annular structure, the semi-closed annular structure can save manufacturing materials of part of the annular ground wire, and therefore manufacturing cost of the annular ground wire can be reduced, and manufacturing cost of the whole flexible circuit board can be reduced.
In a possible implementation manner, a first opening is provided on the first end portion, a first extending portion is formed at a position on the first end portion where the first opening is not provided, a second opening is provided on the second end portion, a second extending portion is formed at a position on the second end portion where the second opening is not provided, the first extending portion extends into the second opening and is staggered with the second extending portion, and the second extending portion extends into the first opening.
From this, through setting up first end and second end mutual staggering to make have the opening between first end and the second end, thereby make annular ground wire form half confined loop configuration, make half confined annular ground wire simple structure easily realize, and can make the conductive film all be located annular ground wire, make annular ground wire's protective effect better.
In a possible implementation manner, the first gap penetrates through the first end portion along a first direction, and the first direction is a direction perpendicular to the extending direction of the first end portion and away from the first extending portion;
and/or the presence of a gas in the gas,
the second gap penetrates through the second end part along a second direction, and the second direction is perpendicular to the extending direction of the second end part and is far away from the second extending part.
From this, set up first opening on first end, and/or, set up the structural style of second opening on the second end, all can make first end and second end stagger the setting each other in, can also save the space that occupies of first end and second end, and all easily the preparation realizes.
In a possible implementation manner, a test line is disposed on the conductive circuit, and the conductive circuit is electrically connected to the annular ground line through the test line. From this, not only can make the conducting wire pass through the test wire and test the conductivity of conducting wire, can also make the static on the conducting wire pass through the test wire and conduct to annular ground on to with static electricity discharge, compare in still will set up wire or conducting strip be connected with annular ground electricity in addition, saved the material and can also save the process of preparation wire or conducting strip.
In a possible implementation manner, the conductive circuit has a plurality of conductive circuits, the test lines are disposed on the plurality of conductive circuits, two adjacent test lines are independent from each other, and each conductive circuit is electrically connected to the annular ground line through the test line.
Therefore, the annular ground wire can release the static electricity on each conducting circuit and prevent the external static electricity from being led into each conducting circuit, so that the effect of preventing the conducting circuits from being damaged by the static electricity is better.
In one possible implementation manner, the conductive film has a plurality of conductive films, the annular ground line surrounds the peripheries of the conductive films, the annular ground line has a plurality of openings, and the plurality of openings are arranged at intervals with the test lines on the conductive films.
Therefore, the test lines on the conductive films are mutually independent, short circuit among the test lines on the conductive films is prevented, and inaccurate detection of the conductive circuits on the conductive films due to the short circuit among the test lines on the conductive films is avoided.
In a possible implementation manner, the annular ground lines are multiple, the multiple annular ground lines are respectively arranged on the substrate, and any two adjacent annular ground lines are electrically connected.
Therefore, one conductive film can be arranged in one annular ground wire, or a small number of conductive films are arranged in one annular ground wire, so that static electricity on each conductive film can be released out through the annular ground wire, and the plurality of annular ground wires can be electrically connected with the static electricity releasing structure through one connecting wire, so that the connection is convenient. And the annular ground wires can block external static for multiple times, so that the probability of leading external static into the conductive film is effectively reduced.
In a possible implementation manner, first connecting lines are arranged on the annular ground lines and extend outwards, and any two adjacent annular ground lines are electrically connected through the first connecting lines. Therefore, when the annular ground wires and the conductive films are manufactured on the substrate, the first connecting wires are manufactured, the process is simplified, when the adjacent two annular ground wires are cut, the cutting is only needed to be performed on the outer sides of the annular ground wires at the positions of the first connecting wires, and the operation is simple.
In one possible implementation, the line width of the annular ground line is greater than the line width of the conductive line. Therefore, the resistance of the annular ground wire is smaller than that of the conducting circuit, so that static electricity on the conducting circuit can be better conducted to the annular ground wire.
Compared with the prior art, the method has the following beneficial effects: in this embodiment, since the annular ground line is disposed on the substrate and surrounds the periphery of the conductive line, the annular ground line can prevent static electricity outside the annular ground line from being introduced into the conductive line, so that the risk of the conductive line being damaged by the static electricity can be reduced. In addition, because the annular ground wire is electrically connected with the conducting circuit and is also used for being electrically connected with the static electricity releasing structure, the static electricity on the conducting circuit can be released through the static electricity releasing structure, and the conducting circuit can be better prevented from being damaged by the static electricity.
It can be seen that the flexible circuit board that this application provided, on the one hand, can block outside static of annular ground wire outside annular ground wire through annular ground wire, play the effect that prevents outside static and get into the conducting wire, on the other hand, can also pass through the static electricity discharge structure release with the static of conducting wire self through annular ground wire. Therefore, the conductive circuit can be well prevented from being damaged by static electricity.
The annular ground wire is of a semi-closed annular structure, so that compared with a closed annular structure, the semi-closed annular structure can save manufacturing materials of part of the annular ground wire, and therefore manufacturing cost of the annular ground wire can be reduced, and manufacturing cost of the whole flexible circuit board can be reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible circuit board according to an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a second enlarged view A of FIG. 1;
FIG. 4 is an enlarged view of A in FIG. 1;
FIG. 5 is an enlarged view of A in FIG. 1;
FIG. 6 is an enlarged view of A in FIG. 1;
FIG. 7 is an enlarged view of A in FIG. 1;
FIG. 8 is an enlarged view B of FIG. 1;
fig. 9 is a schematic structural diagram of a flexible circuit board having a plurality of annular ground lines according to an embodiment of the present invention;
fig. 10 is an enlarged view of C in fig. 9.
Description of reference numerals:
1-a substrate; 2-a conductive film; 21-conductive lines; 22-test line; 3-ring ground wire; 31-a first end portion; 311-a first gap; 312 — a first extension; 32-a second end; 321-a second gap; 322-a second extension; 33-a first connection line; 34-second connecting line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
A Flexible Printed Circuit Board (FPC) is a Printed Circuit made of a Flexible insulating substrate, and has many advantages that a rigid Printed Circuit Board does not have, such as light weight, thin thickness, and good bending property, and is increasingly widely used. With the development of the flexible circuit board industry, the manufacturing process of the flexible circuit board is quite mature, and in the processing of the flexible circuit board, the flexible circuit board is generally obtained by a series of post-processing procedures such as electroplating, alignment, exposure, film pasting, etching, film tearing, curing, nickel gold deposition, electrical measurement and the like on a base material.
However, static electricity is generated in some processes during the processing of the flexible printed circuit board, such as exposure, film sticking, film tearing, electrical measurement, or when a jig is externally connected. Because static has the characteristic of point discharge, and the conducting wire in the flexible circuit board is very thin, is usually 3um ~ 15um, consequently, receives the electrostatic shock easily to lead to the flexible circuit board dysfunction.
In order to prevent the conductive circuit from being damaged by static electricity, a static electricity releasing device, such as a static electricity remover, is usually disposed on the production equipment, but this measure only partially releases static electricity on the flexible circuit board, and static electricity still exists on the flexible circuit board, and cannot completely prevent external static electricity from being introduced into the conductive circuit. Therefore, although the static electricity on the flexible circuit board releases part of the static electricity through the static electricity releasing device, the voltage of the static electricity is reduced, but the conductive circuit on the flexible circuit board still has the risk of being damaged by the static electricity.
In view of this, the utility model provides a flexible circuit board not only can fall the static release on the conducting wire among the flexible circuit board, can also block outside static conduction to on the conducting wire to can prevent that the conducting wire from being damaged by the static impact.
The flexible circuit board is described in detail by specific embodiments below:
the embodiment of the present application provides a flexible circuit board, as shown in fig. 1, including a substrate 1, a conductive film 2 and a ring-shaped ground line 3, where the conductive film 2 is disposed on the substrate 1, and the conductive film 2 includes a conductive circuit 21; the annular ground wire 3 is arranged on the substrate 1 and surrounds the periphery of the conductive circuit 21, the annular ground wire 3 is electrically connected with the conductive circuit 21, the annular ground wire 3 is also used for being electrically connected with the static electricity releasing structure so as to release static electricity, and the annular ground wire 3 is of a semi-closed annular structure.
It should be noted that the above-mentioned annular ground wire 3 is in a semi-closed annular structure, which means that the opening of the annular ground wire 3 is very small relative to the total length of the annular ground wire 3, i.e. the annular ground wire 3 can still almost completely surround the conductive trace 21.
In the present embodiment, since the ring-shaped ground line 3 is provided on the substrate 1 and surrounds the periphery of the conductive line 21, the ring-shaped ground line 3 can prevent static electricity located outside the ring-shaped ground line 3 from being introduced onto the conductive line 21, so that the risk of the conductive line 21 being damaged by static electricity can be reduced. In addition, since the annular ground wire 3 is electrically connected with the conductive trace 21 and the annular ground wire 3 is also used for being electrically connected with the static electricity releasing structure, static electricity on the conductive trace 21 can be released through the static electricity releasing structure, so that the conductive trace 21 can be better prevented from being damaged by static electricity.
It can be seen that, the flexible circuit board provided by the application can block the static outside the ring ground wire 3 through the ring ground wire 3, and play a role in preventing the static outside from entering the conductive circuit 21, and on the other hand, can release the static of the conductive circuit 21 itself through the static releasing structure through the ring ground wire 3. Therefore, the conductive line 21 can be prevented from being damaged by static electricity.
Since the annular ground wire 3 is of a semi-closed annular structure, it can be understood that compared with a closed annular structure, the semi-closed annular structure can save manufacturing materials of part of the annular ground wire 3, so that the manufacturing cost of the annular ground wire 3 can be reduced, and further the manufacturing cost of the whole flexible circuit board can be reduced.
In the manufacturing process of the flexible circuit board, especially when the flexible circuit board is manufactured in batch, a plurality of conductive films 2 are generally uniformly arranged on the substrate 1 in a rolled manner, and then the plurality of conductive films 2 are cut one by one, so that the conductive circuits 21 on the conductive films 2 are conveniently detected, that is, the conductivity of the conductive circuits 21 is detected, and the subsequent manufacturing process is performed on the conductive films 2 with good conductivity.
Based on this, when the number of the conductive films 2 in the annular ground wire 3 is multiple, and the multiple conductive films 2 are all electrically connected with the annular ground wire 3, at this time, an opening may be provided on the annular ground wire 3 portion located between any two conductive films 2 on the annular ground wire 3, that is, the annular ground wire 3 is a semi-closed annular structure, so that any two conductive films 2 cannot be electrically connected and conducted, the conductive traces 21 in any two conductive films 2 are prevented from being electrically connected and shorted, and the accuracy of detecting the conductive traces 21 on the conductive films 2 can be improved.
The above-mentioned static electricity discharge structure may be implemented in various ways, such as a ground line, or a static electricity eliminator, and is not limited herein, as long as the static electricity conducted by the ring-shaped ground line 3 can be discharged.
The annular ground wire 3 is a semi-closed annular structure and has various structural forms, as shown in fig. 2 to 7, two ends of the annular ground wire 3 at the opening can be oppositely arranged, and the interval between the two ends at the opening is small, so that the material of the annular ground wire 3 can be saved; the two ends of the annular ground wire 3 at the opening are arranged in a staggered mode, and the interval between the two ends of the opening is small, so that the two ends of the annular ground wire 3 at the opening can block external static electricity, namely the annular ground wire 3 at the opening can block the external static electricity twice.
In some embodiments, as shown in fig. 3-7, the annular ground wire 3 includes a first end portion 31 and a second end portion 32 disposed on the substrate 1 in a staggered manner, and the first end portion 31 and the second end portion 32 have an opening therebetween, so that the annular ground wire 3 forms a semi-closed ring structure. Through setting up first end 31 and second end 32 crisscross each other to have the opening between first end 31 and the second end 32, thereby make annular ground wire 3 form semi-closed loop configuration, make semi-closed annular ground wire 3 simple structure easily realize, and can make conductive film 2 all be located annular ground wire 3, make annular ground wire 3's protective effect better.
Specifically, the first end portions 31 and the second end portions 32 are alternately arranged on the substrate 1 in various structural forms. In one possible implementation, as shown in fig. 3, the first end portion 31 is located inside the second end portion 32, and the opening is located between the outside of the first end portion 31 and the inside of the second end portion 32, that is, the extending direction of the opening and the extending direction of the first end portion 31 and the extending direction of the second end portion 32 are parallel to each other, and the width of the opening is narrower along the line width direction of the first end portion 31. Therefore, the line widths of the first end portion 31 and the second end portion 32 can be consistent with the line widths of other positions on the annular ground wire 3, the annular ground wire 3 is convenient to manufacture, and the manufacturing process is simplified.
In a second possible implementation, as shown in fig. 4, the first end portion 31 and the second end portion 32 are both provided in a right triangle shape, the oblique side of the first end portion 31 is disposed opposite to the oblique side of the second end portion 32, that is, the opening extends in a direction parallel to the oblique side of the first end portion 31 and the oblique side of the second end portion 32, and the width of the opening is narrow. Thereby, the space occupied by the annular ground wire 3 on the substrate 1 at the first end 31 and the second end 32 can be saved, and the material of the substrate 1 can be saved.
In a third possible implementation manner, as shown in fig. 5 to 7, a first opening 311 is formed in the first end portion 31, a first extending portion 312 is formed at a position on the first end portion 31 where the first opening 311 is not formed, a second opening 321 is formed in the second end portion 32, a second extending portion 322 is formed at a position on the second end portion 32 where the second opening 321 is not formed, the first extending portion 312 extends into the second opening 321 and is staggered from the second extending portion 322, and the second extending portion 322 extends into the first opening 311. Therefore, by providing the first notch 311 on the first end portion 31, providing the second notch 321 on the second end portion 32, extending the first extending portion 312 into the second notch 321, and extending the second extending portion 322 into the first notch 311, the occupied space of the annular ground wire 3 on the substrate 1 at the first end portion 31 and the second end portion 32 is saved, and the material of the substrate 1 is saved.
Specifically, the first opening 311 is along a first direction (X in FIG. 5) 1 The direction shown) extends through the first end 31, the first direction X 1 A direction perpendicular to the extending direction of the first end portion 31 and away from the first extending portion 312; and the second gap 321 is along the second direction (Y in FIG. 5) 1 The direction shown) extends through the second end 32 in a second direction Y 1 Is perpendicular to the extending direction of the second end portion 32 and away from the second extending portion 322. Alternatively, only the first gap 311 is in the first direction (X in FIG. 6) 2 The direction shown) extends through the first end 31, the first direction X 2 The second notch 321 only penetrates the second end portion 32 along the extending direction of the second end portion 32, that is, the second notch 321 is a groove formed in the second end portion 32, so that the first extending portion 312 can be embedded in the second notch 321. Alternatively, only the second gap 321 is along the second direction (Y in FIG. 7) 2 The direction shown) extends through the second end 32 in a second direction Y 2 Is perpendicular to the extending direction of the second end portion 32 and is far away from the second extending portion 322, at this time, the first opening 311 only penetrates through the first end portion 31 along the extending direction of the first end portion 31, i.e. the first opening 311 is a groove formed on the first end portion 31, so that the second extending portion 322 can be embedded in the first opening 311 in (b). The structural form of the first opening 311 on the first end 31 and/or the second opening 321 on the second end 32 can make the first end 31 and the second end 32 staggered from each other, and can save the occupied space of the first end 31 and the second end 32, and are easy to manufacture and implement.
The shape of the first extension 312 and the second extension 322 may be any one of a rectangle, a triangle, an arc, or a trapezoid, and the like, and is not limited herein.
The above-mentioned electrical connection between the annular ground line 3 and the conductive trace 21 also has various implementation manners, for example, the annular ground line 3 may be electrically connected to the conductive trace 21 through a conducting wire, and the conducting wire may be an external conducting wire, or a conducting wire is fabricated on the substrate 1 while the annular ground line 3 and the conductive trace 21 are fabricated; or, a conductive sheet may be disposed on the conductive trace 21, the conductive trace 21 is electrically connected to the annular ground line 3 through the conductive sheet, and the conductive sheet may be formed on the substrate 1 when the annular ground line 3 and the conductive trace 21 are formed on the substrate 1, so as to simplify the manufacturing process. As shown in fig. 8, a test line 22 may be further disposed on the conductive trace 21, the conductive trace 21 is electrically connected to the annular ground line 3 through the test line 22, at this time, the conductive trace 21 may test the conduction performance of the conductive trace 21 through the test line 22, and the static electricity on the conductive trace 21 may also be conducted to the annular ground line 3 through the test line 22 to release the static electricity.
Alternatively, the annular ground line 3, the test line 22 and the conductive trace 21 may be made of the same conductive material, for example, any one of conductive metals such as copper, gold, nickel or silver, which is not limited herein. And can be simultaneously manufactured on the substrate 1, thereby preventing static electricity and simplifying the manufacturing process.
Generally, in the manufacturing process of the flexible circuit board, the conductive circuits 21 on the flexible circuit board are multiple, the multiple conductive circuits 21 can be respectively electrically connected with the annular ground wires 3, the annular ground wires 3 electrically connected with the multiple conductive circuits 21 can be multiple, the multiple conductive circuits 21 are connected with the multiple annular ground wires 3 in a one-to-one correspondence manner, at this time, the annular ground wires 3 are in a semi-closed annular structure, so that mutual short circuit among the multiple conductive circuits 21 can be prevented, and inaccurate detection of the conductive circuits 21 due to short circuit of the multiple conductive circuits 21 is avoided.
In some embodiments, as shown in fig. 8, the conductive trace 21 has a plurality of conductive traces 21, each of the plurality of conductive traces 21 has a test line 22, and two adjacent test lines 22 are independent from each other, so as to prevent inaccurate detection of the conductive trace 21 due to short circuit between two adjacent test lines 22. Also, each conductive line 21 is electrically connected to the ring-shaped ground line 3 through a test line 22.
Therefore, the annular ground wire 3 can discharge static electricity on each conductive line 21 and block external static electricity from being introduced onto the conductive line 21, so that the effect of preventing the conductive line 21 from being damaged by the static electricity by the annular ground wire 3 is better.
Specifically, a plurality of ground wires may be provided at a portion of the annular ground wire 3 electrically connected to the test wires 22, the plurality of ground wires being independent of each other, and the plurality of ground wires being electrically connected to the plurality of test wires 22 in a one-to-one correspondence. And the other parts except the ground wires are the ground wires with wider line width in the annular ground wire 3, and the position of the annular ground wire 3 where the ground wires are arranged is provided, the outermost ground wire in the ground wires is connected with one end of the annular ground wire 3, the outermost ground wire in the ground wires is connected with the other end of the annular ground wire 3, and the ground wires can be simultaneously and electrically connected to the electrostatic discharge structure so as to discharge the electrostatic on each conductive circuit 21. Also, the plurality of ground lines may be made independent of each other, so that the plurality of test lines 22 connected in one-to-one correspondence may be made independent of each other.
In addition, the extending direction of the plurality of ground lines provided in the ring-shaped ground line 3 may be orthogonal to the extending direction of the test line 22 to block external static electricity from running up from the extending direction of the test line 22 into the conductive line 21. Of course, the extending direction of the plurality of ground lines may also form other angles with the extending direction of the test line 22, and is not limited herein.
In some embodiments, the conductive film 2 may have a plurality of conductive films 2, the annular ground line 3 surrounds the plurality of conductive films 2, and the annular ground line 3 has a plurality of openings spaced apart from the test lines 22 on the plurality of conductive films 2. Therefore, the test lines 22 on the conductive films 2 are independent from each other, short circuit between the test lines 22 on the conductive films 2 is prevented, and inaccurate detection of the conductive lines 21 on the conductive films 2 due to the short circuit between the test lines 22 on the conductive films 2 is avoided.
Taking the example that the annular ground wire 3 surrounds the peripheries of the two conductive films 2 as an example, the two conductive films 2 are respectively and electrically connected with the annular ground wire 3 through the test wires 22, the annular ground wire 3 is provided with two openings, and the annular ground wire 3 between the test wires 22 on the two conductive films 2 is respectively provided with one opening, so that the test wires 22 on the two conductive films 2 are mutually disconnected, and the detection inaccuracy of the conductive circuit 21 caused by the short circuit of the test wires 22 on the two conductive films 2 is prevented.
As shown in fig. 9 and 10, the plurality of annular ground lines 3 are provided, and the plurality of annular ground lines 3 are respectively provided on the substrate 1, and any two adjacent annular ground lines 3 are electrically connected to each other.
Therefore, one conductive film 2 can be arranged in one annular ground wire 3, or a small number of conductive films 2 are arranged in one annular ground wire 3, so that static electricity on each conductive film 2 can be released out through the annular ground wire 3, and the annular ground wires 3 can be electrically connected with the static electricity releasing structure through one connecting wire, so that the connection is convenient. And the annular ground wires 3 can block external static for multiple times, so that the probability of external static being introduced to the conductive film 2 is effectively reduced.
In addition, when the plurality of conductive films 2 are cut, the adjacent two annular ground wires 3 can be cut first, so that the annular ground wires 3 are still surrounded on the periphery of the cut conductive films 2, and the annular ground wires 3 can still protect the cut conductive films 2 from electrostatic shock.
Specifically, as shown in fig. 10, any two adjacent annular ground wires 3 may be electrically connected, where a first connection line 33 extends outward from the annular ground wire 3, and any two adjacent annular ground wires 3 are electrically connected through the first connection line 33. Therefore, the first connecting lines 33 can be manufactured while the annular ground wires 3 and the conductive films 2 are manufactured on the substrate 1, the process is simplified, and when the two adjacent annular ground wires 3 are cut, the cutting is only carried out on the outer sides of the annular ground wires 3 at the positions of the first connecting lines 33, so that the operation is simple. And the first connecting wire 33 after cutting can also be used as a connector lug to be electrically connected with the static electricity releasing structure, so that the annular ground wire 3 is conveniently and electrically connected with the static electricity releasing structure.
In some embodiments, each annular ground wire 3 may surround the periphery of two or more conductive films 2, and the two or more conductive films 2 may be electrically connected to the annular ground wire 3 through the test wire 22, at this time, each annular ground wire 3 has a plurality of corresponding openings, so that the test wires 22 on the two or more conductive films 2 are not conductive, that is, the conductive traces 21 on the two or more conductive films 2 are not conductive. Then, in order to make each portion of annular ground line 3 conductive with adjacent annular ground line 3, test lines 22 on two or more conductive films 2 are electrically connected in turn. A second connection line 34 may be provided outside the ring-shaped ground line 3, the second connection line 34 being electrically connected to the test lines 22 on the two or more conductive films 2 in turn, and the second connection line 34 may be electrically connected to the first connection line 33. Therefore, the annular ground wires 3 arranged on the substrate 1 can be electrically connected and conducted, and each conductive film 2 can be electrically connected and conducted with any one of the annular ground wires 3, so that static electricity on the conductive film 2 can be conveniently conducted to the static electricity discharge structure through the annular ground wires 3 to discharge the static electricity.
When two adjacent annular ground wires 3 are cut, a cutting line (shown as a dashed straight line in fig. 9) may be located between the second connection line 34 and the other portion of the annular ground wire 3, that is, the second connection line 34 may be cut to the substrate 1 on which the adjacent annular ground wire 3 is located, so that the cut annular ground wire 3 can still surround the periphery of the two or more conductive films 2, and the test lines 22 on the two or more conductive films 2 located in the annular ground wire 3 are not conducted with each other, that is, the conductive traces 21 in the two or more conductive films 2 are not conducted, so as to prevent the conductive traces 21 in the two or more conductive films 2 from being short-circuited to cause inaccurate detection of the conductive traces 21.
Taking the example that each annular ground wire 3 surrounds the periphery of two conductive films 2 as an example, the two conductive films 2 are electrically connected with the annular ground wire 3 through the test wires 22 respectively, the annular ground wire 3 is provided with two openings, and the annular ground wire 3 between the test wires 22 on the two conductive films 2 is provided with one opening respectively, so that the test wires 22 on the two conductive films 2 are mutually disconnected and not conducted, and the detection inaccuracy of the conductive circuit 21 caused by the short circuit of the test wires 22 on the two conductive films 2 is prevented. Each annular ground wire 3 is provided with a second connecting wire 34 at a side close to the next annular ground wire 3, one end of the second connecting wire 34 is electrically connected and conducted with the annular ground wire 3 part connected with the test wire 22 of one of the conductive films 2, the other end of the second connecting wire 34 is electrically connected and conducted with the annular ground wire 3 part connected with the test wire 22 of the other conductive film 2, and the second connecting wire 34 is also electrically connected with the first connecting wire 33, so that each part of the annular ground wire 3 can be electrically connected and conducted with the adjacent annular ground wire 3, and each conductive film 2 and each annular ground wire 3 can be electrically connected and conducted, so that the annular ground wires 3 have a good effect of preventing electrostatic shock to the conductive wires 21 in the conductive films 2.
In the present embodiment, the line width of the ring-shaped ground line 3 is larger than the line width of the conductive line 21. Thus, the impedance of annular ground line 3 is smaller than the impedance of conductive path 21, so that static electricity on conductive path 21 can be better conducted to annular ground line 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A flexible circuit board, comprising:
a substrate;
a conductive film disposed on the substrate, the conductive film including a conductive line;
the annular ground wire is arranged on the substrate and surrounds the periphery of the conducting circuit, is electrically connected with the conducting circuit, and is also used for being electrically connected with the static electricity releasing structure so as to release static electricity;
the annular ground wire is of a semi-closed annular structure.
2. The flexible circuit board of claim 1, wherein the ring-shaped ground trace comprises a first end portion and a second end portion disposed on the substrate in a staggered manner, and the first end portion and the second end portion have an opening therebetween, so that the ring-shaped ground trace forms the semi-closed ring-shaped structure.
3. The flexible circuit board according to claim 2, wherein the first end portion has a first opening, a first extending portion is formed at a position of the first end portion where the first opening is not formed, the second end portion has a second opening, a second extending portion is formed at a position of the second end portion where the second opening is not formed, the first extending portion extends into the second opening and is staggered with the second extending portion, and the second extending portion extends into the first opening.
4. The flexible circuit board of claim 3, wherein the first opening extends through the first end portion along a first direction, the first direction being perpendicular to the direction of extension of the first end portion and away from the first extension portion;
and/or the presence of a gas in the gas,
the second gap penetrates through the second end part along a second direction, and the second direction is perpendicular to the extending direction of the second end part and is far away from the second extending part.
5. The flexible circuit board according to any one of claims 1 to 4, wherein a test line is disposed on the conductive trace, and the conductive trace is electrically connected to the annular ground via the test line.
6. The flexible circuit board of claim 5,
the conductive circuits are provided with a plurality of test lines, the test lines are arranged on the conductive circuits, two adjacent test lines are mutually independent, and each conductive circuit is electrically connected with the annular ground wire through the test line.
7. The flexible circuit board of claim 6, wherein the conductive film has a plurality of conductive films, the annular ground is disposed around the plurality of conductive films, the annular ground has a plurality of openings, and the plurality of openings are spaced apart from the plurality of test lines on the conductive films.
8. The flexible circuit board according to claim 7, wherein the annular ground lines have a plurality of annular ground lines, the plurality of annular ground lines are respectively disposed on the substrate, and any two adjacent annular ground lines are electrically connected to each other.
9. The flexible circuit board of claim 8, wherein a first connecting line is disposed on the annular ground lines and extends outwards, and any two adjacent annular ground lines are electrically connected through the first connecting line.
10. The flexible circuit board according to any one of claims 1 to 4, wherein a line width of the annular ground line is larger than a line width of the conductive line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024562.6U CN217509109U (en) | 2022-04-25 | 2022-04-25 | Flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024562.6U CN217509109U (en) | 2022-04-25 | 2022-04-25 | Flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217509109U true CN217509109U (en) | 2022-09-27 |
Family
ID=83352681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221024562.6U Active CN217509109U (en) | 2022-04-25 | 2022-04-25 | Flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217509109U (en) |
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2022
- 2022-04-25 CN CN202221024562.6U patent/CN217509109U/en active Active
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