CN214041933U - Flexible circuit board, backlight, display module and display device - Google Patents
Flexible circuit board, backlight, display module and display device Download PDFInfo
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- CN214041933U CN214041933U CN202023247431.8U CN202023247431U CN214041933U CN 214041933 U CN214041933 U CN 214041933U CN 202023247431 U CN202023247431 U CN 202023247431U CN 214041933 U CN214041933 U CN 214041933U
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- circuit board
- flexible circuit
- substrate
- insulating layer
- connection
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Abstract
The utility model discloses a flexible circuit board, backlight, display module assembly and display device, this flexible circuit board include base plate and insulating layer body, and the interval is provided with two at least joining regions on the base plate, and the joining region is used for the electric connection electrode, and insulating layer body covers on the base plate, and insulating layer body is located the one end of joining region, and one side of insulating layer body that is close to the joining region is equipped with the arch, and protruding one side protrusion towards keeping away from insulating layer body is protruding, protruding and the adjacent setting in joining region. The utility model discloses technical scheme can keep apart the tip of two adjacent joining regions through the arch, increases the soldering tin of molten state and flows to the distance of another joining region adjacent with it from a joining region, avoids soldering tin to connect two adjacent joining regions and causes the short circuit to improve welded reliability.
Description
Technical Field
The utility model relates to a display device technical field, in particular to flexible circuit board, backlight, display module assembly and display device.
Background
A Flexible Printed Circuit (FPC) is a Flexible Printed Circuit board made of polyimide or polyester film as a base material, which has high reliability and is excellent.
A non-self-luminous series display module of a mobile phone mainly provides brightness display through a backlight source connected with a flexible circuit board, a liquid crystal display screen of the backlight needs to be connected with the flexible circuit board in a welding mode for power supply, and a mobile phone battery provides a final power supply.
In the connection of the existing flexible circuit board, the electrodes are welded on the flexible circuit board, one side of the insulating layer of the flexible circuit board close to the electrodes is a flat fault, when the electrodes are welded by welding tin, when molten tin flows, two adjacent electrodes are easily connected, and a circuit short circuit is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flexible circuit board, backlight, display module assembly and display device, aim at solving the technical problem with the easy short circuit of electrode welding when on flexible circuit board.
In order to achieve the above object, the present invention provides a flexible circuit board comprising:
the device comprises a substrate, at least two connection areas are arranged on the substrate at intervals, and the connection areas are used for being electrically connected with electrodes;
the insulating layer body covers on the substrate, the insulating layer body is located at one end of the connecting area, a bulge is arranged on one side, close to the connecting area, of the insulating layer body, the bulge protrudes towards one side, far away from the insulating layer body, and the bulge and the connecting area are arranged adjacently.
Optionally, a connection hole is formed in the connection region, and a hole wall of the connection hole is electrically connected to the electrode.
Optionally, the substrate includes a first side surface and a second side surface that are opposite to each other, the first side surface and the second side surface are both provided with at least two of the connection regions, and the connection holes penetrate through the substrate.
Optionally, an end of the connection region on the first side surface close to the insulating body is offset from an end of the connection region on the second side surface close to the insulating body, and is offset along a length extending direction of the connection region.
Optionally, the connection regions are disposed on the substrate at equal intervals.
Optionally, the shape of the protrusion is at least one of triangular, trapezoidal, and arcuate.
Optionally, the insulating layer body is integrally formed with the protrusion.
Optionally, the insulating layer body is a polyimide film layer.
The utility model discloses still provide a backlight, this backlight includes:
the flexible circuit board according to any one of the above technical solutions;
the backlight body is used for emitting light, and the substrate is connected to the backlight body.
The utility model discloses still provide a display module assembly, this display module assembly includes:
the backlight source according to any one of the above technical solutions;
the backlight body is arranged on the back of the screen, and the substrate is connected with the screen.
The utility model discloses still provide a display device, this display device includes the display module assembly that any above-mentioned technical scheme mentioned.
The insulating layer body of the technical scheme of the utility model covers on the substrate, can play an insulating role to avoid contacting with other structures to cause the short circuit of the whole circuit, and simultaneously, the insulating layer body also has the function of increasing the strength of the substrate; the substrate is provided with a connecting area which is used for electrically connecting the electrode of the other main flexible circuit board; the insulating layer body is located the one end of joining region, and the one side of insulating layer body that is close to the joining region is equipped with the arch, and the arch is towards the one side protrusion of keeping away from the insulating layer body to the arch sets up with the joining region is adjacent, so that through the tip of protruding two adjacent joining regions of isolation, increases the distance that molten state's soldering tin flows from a joining region to another joining region adjacent to it, avoids soldering tin to connect two adjacent joining regions and causes the short circuit, thereby improves welded reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a backlight source of the present invention;
FIG. 2 is a first schematic structural diagram of the flexible circuit board in FIG. 1;
FIG. 3 is a second schematic structural diagram of the flexible printed circuit board shown in FIG. 1;
fig. 4 is a schematic structural diagram three of the flexible circuit board in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | |
| 111 | Connecting |
112 | Connecting |
| 12 | |
13 | |
| 14 | |
15 | |
| 2 | |
21 | Backlight body |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a flexible circuit board for connect main flexible circuit board (main FPC promptly) and body (the backlight body promptly) is shaded, with the technical problem of the easy short circuit of electrode connection on the main flexible circuit board when solving on the flexible circuit board.
In the embodiment of the present invention, as shown in fig. 2 to fig. 4, the flexible circuit board includes a substrate 11 and an insulating layer body 12, at least two connection areas 111 are disposed on the substrate 11 at intervals, the connection areas 111 are used for electrically connecting electrodes, the insulating layer body 12 covers the substrate 11, the insulating layer body 12 is located at one end of the connection areas 111, one side of the insulating layer body 12 close to the connection areas 111 is provided with a protrusion 13, the protrusion 13 protrudes toward one side away from the insulating layer body 12, and the protrusion 13 is disposed adjacent to the connection areas 111.
The insulating layer body 12 of the technical scheme of the utility model covers on the substrate 11, which can play an insulating role to avoid the whole circuit short circuit caused by the contact with other structures, and meanwhile, the insulating layer body 12 also has the function of increasing the strength of the substrate 11; the substrate 11 is provided with a connection region 111, and the connection region 111 is used for electrically connecting electrodes of another main flexible circuit board 1 (i.e. a main FPC); the insulation layer body 12 is located at one end of the connection region 111, a protrusion 13 is arranged on one side of the insulation layer body 12 close to the connection region 111, the protrusion 13 protrudes towards one side far away from the insulation layer body 12, and the protrusion 13 is arranged adjacent to the connection region 111, so that the end portions of two adjacent connection regions 111 are separated through the protrusion 13, the distance that molten solder flows from one connection region 111 to the other adjacent connection region 111 is increased, short circuit caused by the fact that the solder connects the two adjacent connection regions 111 is avoided, and therefore welding reliability is improved.
In one embodiment, as shown in fig. 2 and 3, the connection region 111 is provided with a connection hole 112, a hole wall of the connection hole 112 is electrically connected to the electrode, and since the surface of the connection region 111 is non-conductive and the substrate 11 is provided with a conductive layer, the flexible circuit board 1 can be electrically connected to the electrode by connecting the electrode to the hole wall of the connection hole 112.
In one embodiment, the electrode is connected to the wall of the connection hole 112 by soldering, and the solder is melted and flows into the connection hole 112, thereby electrically connecting the electrode to the wall of the connection hole 112.
In one embodiment, the substrate 11 includes a PI layer, an adhesive layer, a conductor layer, a PI layer, a conductor layer, an adhesive layer, and a PI layer, which are sequentially stacked.
In one embodiment, the conductive layer is a copper layer.
In an embodiment, as shown in fig. 2 and fig. 3, the substrate 11 includes a first side surface 14 and a second side surface 15 opposite to each other, the first side surface 14 and the second side surface 15 are each provided with at least two connection regions 111, and the connection hole 112 penetrates through the substrate 11. When the electrodes are soldered to the connection areas 111, since the connection areas 111 are disposed on both the first side surface 14 and the second side surface 15 of the substrate 11, and the electrodes need to be soldered to both the connection areas 111 on the first side surface 14 and the second side surface 15, the stability of the electrical connection between the substrate 11 and the electrodes can be improved; the electrode is electrically connected to the connection region 111 by soldering, and molten solder flows into the connection hole 112 to electrically connect the electrode to the hole wall of the connection hole 112.
In an alternative embodiment, as shown in fig. 2 and 3, each connection region 111 is provided with at least one connection hole 112.
In one embodiment, as shown in fig. 2 and 3, the first side surface 14 and the second side surface 15 are each provided with three connection areas 111 for connecting three electrodes, including one positive electrode and two negative electrodes.
In an embodiment, as shown in fig. 3 and 4, one end of the connection region 111 on the first side 14 close to the insulating body and one end of the connection region 111 on the second side 15 close to the insulating body are disposed in a staggered manner, and are disposed in a staggered manner along a length extending direction of the connection region 111, so as to ensure that a stress point of the first side 14 of the substrate 11 does not coincide with a stress point of the second side 15, improve a service life of the substrate 11, and avoid that an end of the connection region 111 on the first side 14 is aligned with an end of the connection region 111 on the second side 15, so that the stress point of the first side 14 of the substrate 11 coincides with the stress point of the second side 15, and further stress superposition of the substrate 11 is caused, which easily causes fracture of the substrate 11.
In one embodiment, the attachment zones 111 of the first side 14 are disposed in a one-to-one correspondence with the attachment zones 111 of the second side 15.
In an embodiment, as shown in fig. 2 and 3, the connection regions 111 are disposed on the substrate 11 at equal intervals, and since the area of the substrate 11 is fixed, and the number of the connection regions 111 is fixed, the intervals of the connection regions 111 are different, which may cause some adjacent connection regions 111 to be too close, some adjacent connection regions 111 to be far apart, and the connection regions 111 to be near apart may be prone to short circuit when welding electrodes, so that the connection regions 111 are uniformly distributed to reduce the risk of short circuit.
In one embodiment, the protrusion 13 has a shape of at least one of a triangle, a trapezoid, and an arc, so that the flow of the molten solder is prevented by the protrusion 13 when the electrode is welded.
In one embodiment, as shown in fig. 2 and 3, the insulation layer body 12 and the protrusion 13 are integrally formed, so as to facilitate the manufacture of the insulation layer body 12 and the protrusion 13, and improve the forming efficiency of the insulation layer body 12 and the protrusion 13.
In an embodiment, the insulation layer body 12 is a polyimide film (PI film for short), and the polyimide film has the advantages of excellent heat resistance, excellent mechanical properties, excellent chemical stability, and the like.
In an embodiment, as shown in fig. 1, the present invention further provides a backlight source 2, the backlight source 2 includes a backlight body 21 and the flexible circuit board 1 according to any of the above embodiments, the backlight body 21 is used for emitting light, and the substrate 11 is connected to the backlight body 21.
The utility model provides a backlight 2 includes flexible circuit board 1, and this flexible circuit board 1's concrete structure refers to above-mentioned embodiment, because this backlight 2 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least.
In an embodiment, the utility model also provides a display module assembly, this display module assembly includes the screen and the backlight 2 that any above-mentioned embodiment was mentioned, and body 21 in a poor light sets up in the back of screen, and base plate 11 is connected with the screen.
The utility model provides a display module assembly includes backlight 2, and this backlight 2's concrete structure refers to above-mentioned embodiment, because this display module assembly has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least.
Specifically, the substrate 11 is electrically connected to another main flexible circuit board 1, and the main flexible circuit board 1 is electrically connected to the screen.
In one embodiment, the screen is a liquid crystal display.
In an embodiment, the utility model also provides a display device, this display device includes the display module assembly that any above-mentioned embodiment was mentioned, because this display device includes display module assembly, this display module assembly's concrete structure refers to above-mentioned embodiment, because this display device has adopted all technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least.
In one embodiment, the display device is a mobile phone.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A flexible circuit board, characterized in that the flexible circuit board comprises:
the device comprises a substrate, at least two connection areas are arranged on the substrate at intervals, and the connection areas are used for being electrically connected with electrodes;
the insulating layer body covers on the substrate, the insulating layer body is located at one end of the connecting area, a bulge is arranged on one side, close to the connecting area, of the insulating layer body, the bulge protrudes towards one side, far away from the insulating layer body, and the bulge and the connecting area are arranged adjacently.
2. The flexible circuit board according to claim 1, wherein a connection hole is formed in the connection region, and a hole wall of the connection hole is electrically connected to the electrode.
3. The flexible circuit board of claim 2, wherein the substrate comprises a first side and a second side opposite to each other, wherein at least two of the connection regions are disposed on each of the first side and the second side, and the connection holes penetrate through the substrate.
4. The flexible circuit board according to claim 3, wherein an end of the connection region on the first side surface adjacent to the insulating body is offset from an end of the connection region on the second side surface adjacent to the insulating body and is offset in a direction along which the connection region extends in length.
5. The flexible circuit board of claim 1, wherein the connection regions are disposed on the substrate at equal intervals.
6. The flexible circuit board of claim 1, wherein the shape of the protrusion is at least one of triangular, trapezoidal, and arc-shaped.
7. The flexible circuit board of claim 1, wherein the insulating layer body is a polyimide film layer.
8. A backlight, comprising:
the flexible circuit board of any one of claims 1-7;
the backlight body is used for emitting light, and the substrate is connected to the backlight body.
9. The utility model provides a display module assembly, its characterized in that, display module assembly includes:
the backlight of claim 8;
the backlight body is arranged on the back of the screen, and the substrate is connected with the screen.
10. A display device, characterized in that the display device comprises the display module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023247431.8U CN214041933U (en) | 2020-12-28 | 2020-12-28 | Flexible circuit board, backlight, display module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023247431.8U CN214041933U (en) | 2020-12-28 | 2020-12-28 | Flexible circuit board, backlight, display module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214041933U true CN214041933U (en) | 2021-08-24 |
Family
ID=77344255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023247431.8U Active CN214041933U (en) | 2020-12-28 | 2020-12-28 | Flexible circuit board, backlight, display module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214041933U (en) |
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2020
- 2020-12-28 CN CN202023247431.8U patent/CN214041933U/en active Active
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