CN114333574A - Flexible screen body - Google Patents
Flexible screen body Download PDFInfo
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- CN114333574A CN114333574A CN202111498881.0A CN202111498881A CN114333574A CN 114333574 A CN114333574 A CN 114333574A CN 202111498881 A CN202111498881 A CN 202111498881A CN 114333574 A CN114333574 A CN 114333574A
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- 239000004020 conductor Substances 0.000 claims description 11
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 22
- 238000001125 extrusion Methods 0.000 abstract description 7
- 239000011368 organic material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008054 signal transmission Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The application discloses flexible screen body belongs to and shows technical field. The application provides a flexible screen body includes insulating layer and a plurality of signal line, and in the length extending direction of signal line, at least part of signal line is the heliciform extension and forms helical space, and is the signal line of heliciform extension and lies in different planes, and this helical space is filled at least to the insulating layer. It can be seen that, this application designs the at least part of signal line for three-dimensional spiral, and has spiral space, is equivalent to the spring structure, and then when the flexible screen body was buckled corresponding this part signal line, the tensile stress and the extrusion stress that the spiral signal line produced corresponding the buckling can carry out corresponding deformation, reduces the stress concentration of buckling department. And this application still can set up the insulating layer that fills spiral space at least into organic material, protects the signal line to further release the stress of buckling department. The flexible screen body can reduce the probability of cracks and fractures of the signal line, and therefore the bending resistance of the flexible screen body is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible screen body.
Background
With the development of display technology, flexible display products are more and more widely used. In the preparation of flexible screen body or use, can buckle it usually, but flexible screen body is inside to have a plurality of signal lines, is the metal material usually, and the fragility is great, and the action of buckling easily leads to the department of buckling stress concentration of signal line to and produce crackle, even break, thereby bring adverse effect to the production yield and the life of flexible screen body.
Disclosure of Invention
The technical problem that this application mainly solved provides a flexible screen body, can improve the anti bending performance of the flexible screen body.
In order to solve the technical problem, the application adopts a technical scheme that: providing a flexible screen body, the flexible screen body comprising:
a plurality of signal lines, at least a part of which extends spirally and forms a spiral space in a length extending direction of the signal lines, and the signal lines extending spirally are located on different planes;
an insulating layer at least partially filling the spiral space.
Optionally, the signal line includes at least two sub-wires that are conducted to each other, and at least a portion of the at least two sub-wires is spirally wound and extends to form the spiral space.
Optionally, the signal line further includes at least one supporting member located in the spiral space, and the supporting member abuts against each sub-conductor.
Optionally, the supporting member includes a plurality of side edges connected end to end in sequence, and a corner portion is formed between every two adjacent side edges, and the corner portion abuts against the sub-conductors.
Optionally, the side edges are arc-shaped and are concave towards the center of the support member.
Optionally, the plurality of side edges are all located in a first plane, and the first plane is arranged non-perpendicular to the length extending direction of the signal line;
preferably, the number of the sides is the same as the number of the sub-wires.
Optionally, the support has conductivity, and the at least two sub-wires are conducted to each other through the support.
Optionally, a volume of the spiral space per unit length in a direction in which the length of the signal line extends remains constant.
Optionally, in a length extending direction of the signal line, the spiral space includes a plurality of spiral subspaces, and a volume of the spiral subspace in a unit length gradually increases and then gradually decreases.
Optionally, the at least two sub-wires are in direct contact and conducting at a volumetric minimum of the helical subspace.
The beneficial effect of this application is: the application provides a flexible screen body includes insulating layer and a plurality of signal line, and in the length extending direction of signal line, at least part of signal line is the heliciform extension and forms helical space, and is the signal line of heliciform extension and lies in different planes, and this helical space is filled at least to the insulating layer. It can be seen that, this application designs the at least part of signal line for three-dimensional spiral, and has spiral space, is equivalent to the spring structure, and then when the flexible screen body was buckled corresponding this part signal line, the tensile stress and the extrusion stress that the spiral signal line produced corresponding the buckling can carry out corresponding deformation, reduces the stress concentration of buckling department. And this application still can set up the insulating layer that fills spiral space at least into organic material, protects the signal line to further release the stress of buckling department. Therefore, the probability of generating cracks and breaking of the signal line can be reduced, and the bending resistance of the flexible screen body is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a flexible screen according to the present application;
FIG. 2 is an enlarged schematic view of FIG. 1 at the location of the dashed box;
FIG. 3 is a schematic structural diagram of another embodiment of a flexible screen according to the present application;
FIG. 4 is an enlarged schematic view of FIG. 3 at the location of the dashed box;
FIG. 5 is a schematic structural view of another embodiment of a flexible screen according to the present application;
FIG. 6 is an enlarged schematic view of FIG. 5 at the location of the dashed box;
FIG. 7 is a schematic structural view of another embodiment of a flexible screen according to the present application;
fig. 8 is a schematic cross-sectional view in the direction of N-N in fig. 5.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a flexible screen body of the present application, and fig. 2 is an enlarged schematic diagram of a position of a dashed frame in fig. 1, where the flexible screen body in the present embodiment includes an insulating layer 11 and a plurality of signal lines 12, and five signal lines 12 are schematically illustrated in fig. 1, where the signal lines 12 may specifically be data signal lines, scanning signal lines, touch signal lines, and the like of the flexible screen body, which is not limited in the present application. The plurality of signal lines 12 are provided to independently transmit signals and insulated from each other.
In the length extending direction of the signal line 12, i.e. in the X direction in fig. 1 and fig. 2, at least a part of the signal line 12 extends in a spiral shape and forms a spiral space, and the signal line 12 extending in the spiral shape is located on a different plane, i.e. in the present embodiment, at least a part of the signal line 12 is designed in a three-dimensional spiral shape, similar to a spring structure. Fig. 2 shows only a portion of the signal line 12 in a spiral shape.
The spiral space is at least partially filled with the insulating layer 11, and in fig. 2, the spiral space is filled with the insulating layer 11 and wraps the spiral part of the signal line 12. For clarity of illustration, the signal lines 12 are drawn on the surface of the insulating layer 11 in fig. 1. The material of the insulating layer 11 is preferably an organic insulating material that is easily deformable, such as polyimide PI. On one hand, the insulating layer 11 supports the spiral structure of the signal line 12 from the inside of the spiral space, and on the other hand, the insulating layer 11 wraps the spiral structure from the outside to realize insulation between the signal lines 12.
In this embodiment, at least a portion of the signal line 12 is designed to be a three-dimensional spiral shape, and has a spiral space, which is similar to a spring structure, when the flexible screen body is bent corresponding to the portion of the signal line 12, the spiral signal line 12 can be deformed correspondingly to the tensile stress and the compressive stress generated by bending, so that the stress concentration at the bent portion is reduced, and the insulating layer 11 which is easy to deform can further release the stress at the bent portion. Therefore, the present embodiment can reduce the probability of cracks and fractures occurring when the signal line 12 is bent, thereby improving the bending resistance of the flexible screen body.
In one embodiment, with reference to fig. 2, the signal line 12 includes at least two sub-wires 121 that are connected to each other, and at least a portion of the sub-wires 121 is spirally wound and extended to form the spiral space. Fig. 2 shows a case where the signal line 12 includes two sub-wires 121, similarly to a structure in which two springs are nested in each other.
According to the flexible screen body, the probability of cracks and fractures when the signal wire 12 is bent can be reduced, the bending resistance of the flexible screen body is improved, on the basis, the sub-wires 121 are mutually conducted, so that even if one sub-wire 121 is fractured, signals can still be transmitted through other sub-wires 121, the stability of signal transmission is improved, and the reliability of the flexible screen body is improved.
In one embodiment, please refer to fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of another embodiment of the flexible screen body of the present application, and fig. 4 is an enlarged schematic diagram of a dashed frame in fig. 3. In the present embodiment, the signal line 12 includes four sub-wires 121(121A, 121B, 121C, and 121D) that are conductive to each other, and at least a portion of the four sub-wires 121 is spirally wound and extended to form the spiral space. The signal line 12 further includes at least one supporting member 122 located in the spiral space, and the supporting member 122 abuts against each sub-conductive line 121. Fig. 3 only shows the spiral-shaped portion of the sub-conductive wire 121, and only schematically shows two supporting members 122. In the length extending direction of the signal line 12, a plurality of supporting pieces 122 may be provided at intervals.
The supporting members 122 help to maintain the spiral shape of each sub-conductor 121, so that the sub-conductors 121 can be deformed adaptively when the flexible screen body is bent, and stress is released, thereby improving the bending resistance of the flexible screen body.
Preferably, the supporting member 122 has conductivity, and the sub-wires 121 are conducted with each other through the supporting member 122, so as to reduce the probability of the situation that the signal cannot be transmitted due to the breakage of the respective sub-wires 121, and improve the stability of signal transmission. Specifically, the spiral shape of the sub-wire 121 may be formed through a laser engraving process, and in this process, the supporting member 122 may be formed at the same time, simplifying the process flow.
In one embodiment, with continued reference to fig. 3 and 4, the supporting member 122 includes a plurality of sides connected end to end, and a corner portion is formed between every two adjacent sides, and the corner portion abuts against the sub-conductive line 121, that is, the supporting member 122 is configured to be polygonal in the present embodiment.
Preferably, as shown in fig. 3 and 4, the number of the side edges of the supporting member 122 is the same as the number of the sub-wires 121, that is, the supporting member 122 is a quadrilateral, and four corner portions respectively abut against four sub-wires 121, which is more beneficial to maintaining the spiral shape of the sub-wires 121 and simultaneously achieving mutual conduction between the sub-wires 121. Moreover, when the flexible screen body is bent, transverse extrusion stress is generated inside the flexible screen body, and when the polygonal supporting piece 122 is subjected to the transverse extrusion stress, the polygonal supporting piece can be deformed in an adaptive manner to release the stress, so that the bending resistance of the flexible screen body is improved.
In one embodiment, with continued reference to fig. 3 and 4, the sides of the support member 122 are curved and are concave toward the center of the support member 122. That is to say, this embodiment sets up support piece 122 as indent formula polygon, makes it receive horizontal extrusion stress when, and the adaptability takes place deformation more easily, further improves the anti bending performance of flexible screen body.
Preferably, the plurality of sides of the supporting member 122 are all located in a first plane which is disposed non-perpendicular to the length extending direction of the signal line 12. That is, the extending direction of the normal line of the first plane (indicated by the broken line F in fig. 3) and the extending direction of the length of the signal line 12 (indicated by the solid line L in fig. 3) are not parallel. So set up when making the bending part of flexible screen body just in time correspond support piece 122 position department, support piece 122 can not receive the biggest horizontal extrusion stress to reduce support piece 122's side and take place cracked probability, reduce consequently and the adverse effect to signal transmission who produces, improve signal transmission's stability.
Further, with continued reference to fig. 1-4, in the above embodiments, the volume of the spiral space per unit length in the extending direction of the length of the signal line 12 remains unchanged. Specifically, the spiral radius of each sub-conductor 121 of the signal line 12 may be set to be the same, and may be kept constant in the length extending direction of the signal line 12, so that the volume of the spiral space per unit length may be kept constant. Therefore, the polygonal supporting piece 122 is conveniently arranged in the spiral space, and the spiral form of the sub-conductor 121 is matched, so that the tensile stress and the extrusion stress generated by correspondingly bending the signal wire 12 can be correspondingly deformed, the stress concentration at the bending part is reduced, the probability of generating cracks and breaking when the signal wire 12 is bent is reduced, and the bending resistance of the flexible screen body is improved. Meanwhile, the sub-wires 121 are mutually conducted through the supporting member 122, so that the probability of the situation that signals cannot be transmitted due to the breakage of the respective sub-wires 121 can be reduced, and the stability of signal transmission is improved.
In one embodiment, please refer to fig. 5 and fig. 6 in conjunction with fig. 1, fig. 5 is a schematic structural diagram of another embodiment of the flexible screen body of the present application, fig. 6 is an enlarged schematic diagram of a position of a dashed frame in fig. 5, and fig. 5 only shows a portion of a signal line in a spiral shape. The flexible screen body also includes an insulating layer and a plurality of signal lines 22, in the length extending direction of the signal lines 22, i.e. the X direction in fig. 5, at least part of the signal lines 22 extends in a spiral shape and forms a spiral space, and the signal lines 22 extending in the spiral shape are located on different planes, i.e. this embodiment designs at least part of the signal lines 22 into a three-dimensional spiral shape, similar to a spring structure.
The signal line 22 includes at least two sub-wires 221, and fig. 5 shows four sub-wires 221, and at least a portion of the sub-wires 221 extends in a spiral winding manner to form the spiral space. In the extending direction of the length of the signal line 22, the spiral space includes a plurality of spiral subspaces D, and the volume of the spiral subspace D in the unit length gradually increases and then gradually decreases, and fig. 5 includes two complete spiral subspaces D. Specifically, the spiral radius of each sub-conductor 221 of the signal line 22 may be periodically changed, one period corresponds to the length of one spiral subspace D, the spiral radius of each sub-conductor 221 gradually increases and then gradually decreases in each period, and the spiral radius of each sub-conductor 221 corresponding to the same position remains the same, so that the volume of the spiral subspace D in unit length gradually increases and then gradually decreases, as shown in fig. 5 and 6.
Wherein the insulation layer fills the spiral space and wraps the spiral portion of the signal line 22. The material of the insulating layer is preferably an organic insulating material which is easily deformable, such as polyimide PI. On one hand, the insulating layer supports the spiral structure of the signal line 22 from the inside of the spiral space, and on the other hand, the insulating layer wraps the spiral structure from the outside to realize the insulation between the signal lines 22.
In this embodiment, at least a portion of the signal line 22 is designed to be a three-dimensional spiral shape, and has a spiral space, which is similar to a spring structure, so that when the flexible screen body is bent corresponding to the portion of the signal line 22, the tensile stress and the compressive stress generated by the corresponding bending of the spiral signal line 22 can be correspondingly deformed, thereby reducing the stress concentration at the bent portion, and the insulating layer which is easy to deform can further release the stress at the bent portion. Therefore, the present embodiment can reduce the probability of cracks and fractures occurring when the signal line 22 is bent, thereby improving the bending resistance of the flexible screen body.
Preferably, the at least two sub-wires 221 directly contact and conduct at the minimum volume of the spiral subspace D, specifically, at the position marked by the dashed box in fig. 6. On the basis of obtaining the above beneficial effects, the mutual conduction between the sub-wires 221 is realized through a simpler process preparation, and the stability of signal transmission is improved.
In other embodiments, a support member may be further provided in the spiral space in fig. 5. For example, at the maximum volume of the spiral subspace D, a support member is provided according to the structure of the embodiment shown in fig. 3, and for example, at the minimum volume of the spiral subspace D, a support member of a dense structure, such as a spherical support member, is directly formed, and the mutual conduction between the sub-wires is also achieved, which is not illustrated in any drawing.
In one embodiment, please refer to fig. 7, fig. 7 is a schematic structural diagram of another embodiment of the flexible screen body of the present application, the flexible screen body has a bending region 110, and a display region 120 and a bonding region 130 respectively located at two sides of the bending region 110, the flexible screen body includes an insulating layer and a plurality of signal lines, which are shown as an insulating layer 41 and a signal line 42 in this embodiment, the signal line 42 is spirally wrapped in the insulating layer 41, and for clarity, the signal line 42 is drawn on the surface of the insulating layer 41 in fig. 7, and spiral details are not drawn.
Referring to fig. 7 and fig. 8, fig. 8 is a schematic cross-sectional view taken along the direction N-N in fig. 7, in which the flexible panel further includes a plurality of pixel units 43 and a flexible circuit board 44, the pixel units 43 are disposed in the display area 120, the flexible circuit board 44 is disposed in the bonding area 130, one end of the signal line 42 extends to the display area 120 and is electrically connected to the pixel units 43, and the other end of the signal line 42 extends to the bonding area 130 and is electrically connected to the flexible circuit board 44.
Obviously, the flexible screen body further includes an array layer, a light emitting layer, an electrode layer, and other functional film layers in the prior art, so that the flexible screen body can be applied to a display product, which is not shown in fig. 7 and 8.
In order to increase the screen occupation ratio of the flexible screen body, the flexible screen body needs to be bent corresponding to the bending area 110, so that the bonding area 130 is located on the back side of the display area 120, and other elements such as the flexible circuit board 44 are hidden and arranged on the back side of the display area 120. In the present embodiment, the bending region 110 is provided with the insulating layer 41 and the plurality of signal lines 42 as described in the above embodiments, so that the probability of cracks and fractures of the signal lines 42 during the bending process is reduced, and the bending resistance of the bending region 110 is improved. Meanwhile, in the display area 120 and the bonding area 130 which do not need to be bent, the insulating layer and the signal line are arranged according to the mode in the prior art, so that the process of the flexible screen body can be simplified, the production yield is improved, and the production cost is saved.
It can be understood that, in other display products using a flexible screen body, for example, a folding screen display product, the flexible screen body at the position corresponding to the folding seam may also be set according to the above embodiments, so as to obtain the above technical effects, and details are not described here.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A flexible screen, comprising:
a plurality of signal lines, at least a part of which extends spirally and forms a spiral space in a length extending direction of the signal lines, and the signal lines extending spirally are located on different planes;
an insulating layer at least partially filling the spiral space.
2. A flexible screen according to claim 1,
the signal line comprises at least two sub-wires which are mutually communicated, and at least parts of the at least two sub-wires are spirally wound and extended to form the spiral space.
3. A flexible screen according to claim 2,
the signal line further comprises at least one supporting piece which is positioned in the spiral space and abuts against each sub-conductor.
4. A flexible screen according to claim 3,
the supporting piece comprises a plurality of side edges which are sequentially connected end to end, a corner is formed between every two adjacent side edges, and the corner abuts against the sub-conductors.
5. Flexible screen body according to claim 4,
the side edges are arc-shaped and are recessed towards the center of the support member.
6. Flexible screen body according to claim 4,
the plurality of side edges are all positioned in a first plane, and the first plane is not perpendicular to the length extending direction of the signal line;
preferably, the number of the sides is the same as the number of the sub-wires.
7. A flexible screen according to claim 3,
the supporting piece is conductive, and the at least two sub-wires are mutually conducted through the supporting piece.
8. A flexible screen according to any of claims 1 to 7,
the volume of the spiral space per unit length in the direction in which the length of the signal line extends is kept constant.
9. A flexible screen according to any of claims 2 to 7,
in the length extending direction of the signal line, the spiral space comprises a plurality of spiral subspaces, and the volume of the spiral subspaces on the unit length is gradually increased and then gradually decreased.
10. A flexible screen according to claim 9,
the at least two sub-wires are in direct contact and conductive at the smallest volume of the spiral subspace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111498881.0A CN114333574B (en) | 2021-12-09 | 2021-12-09 | Flexible screen body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111498881.0A CN114333574B (en) | 2021-12-09 | 2021-12-09 | Flexible screen body |
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| CN114333574A true CN114333574A (en) | 2022-04-12 |
| CN114333574B CN114333574B (en) | 2024-05-07 |
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| CN202111498881.0A Active CN114333574B (en) | 2021-12-09 | 2021-12-09 | Flexible screen body |
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| CN114333574B (en) | 2024-05-07 |
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