CN117062472A - Flexible display panel - Google Patents
Flexible display panel Download PDFInfo
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- CN117062472A CN117062472A CN202311148015.8A CN202311148015A CN117062472A CN 117062472 A CN117062472 A CN 117062472A CN 202311148015 A CN202311148015 A CN 202311148015A CN 117062472 A CN117062472 A CN 117062472A
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- Prior art keywords
- display panel
- flexible display
- region
- back plate
- flexible substrate
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- 239000000758 substrate Substances 0.000 claims abstract description 64
- 238000005452 bending Methods 0.000 claims abstract description 60
- 239000010410 layer Substances 0.000 claims description 34
- 239000003292 glue Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 10
- 239000002861 polymer material Substances 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 33
- 238000002360 preparation method Methods 0.000 abstract description 10
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
- G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The application provides a flexible display panel and a preparation method thereof, wherein the flexible display panel comprises: a flexible substrate including a bending region and a first region; a first back plate correspondingly arranged on the first area of the flexible substrate; the first buffer part is arranged on the first backboard, and extends to the bending area along the edge of the first backboard. According to the application, the first buffer part is arranged on the first backboard, and when the flexible display panel is bent, the first buffer part can be used for buffering stress when the display panel is bent, so that the risk of breakage of metal wires or electrodes on the flexible display panel is greatly reduced. Therefore, the product yield of the flexible display panel can be improved.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a flexible display panel.
Background
An organic light emitting diode (Organic Light Emitting Diode, OLED) serves as a kind of current-type light emitting device. The display has the advantages of self-luminescence, rich colors, high response speed, wide viewing angle, light weight, capability of being made into a flexible display screen and the like, and is receiving great attention.
In a flexible OLED display, in order to realize a narrow bezel, a connection region between a display panel and a driving circuit board is generally reverse-folded. However, the metal traces or electrodes on the display panel are easily broken during the bending process, thereby reducing the product yield of the display panel.
Disclosure of Invention
The embodiment of the application provides a flexible display panel and a preparation method thereof, which can reduce the risk of breakage of metal wires or electrodes on the display panel, thereby improving the product yield of the display panel.
In a first aspect, the present application provides a flexible display panel comprising:
a flexible substrate comprising a first region and a flex region;
a first back plate correspondingly arranged on the first area of the flexible substrate;
the first buffer part is arranged on the first backboard, and extends to the bending area along the edge of the first backboard.
In the flexible display panel of the present application, the first buffer portion includes a first main body portion and a first extension portion;
the first main body part is arranged on the first backboard, the first extension part is arranged along the edge of the first backboard and is in contact with the flexible substrate, and the first extension part is connected with one end of the first main body part.
In the flexible display panel, the first backboard comprises a first backboard area and a second backboard area which are connected with each other, the flexible substrate further comprises a wiring area, and the wiring area is positioned between the first area and the bending area;
the first area display area corresponds to the first back plate area, the routing area corresponds to the second back plate area, the first main body part is arranged on the second back plate area, and the first extension part is arranged on the bending area.
In the flexible display panel of the present application, the flexible display panel further includes a buffer layer disposed on the first back plate; wherein,
the buffer layer is arranged on the first main body part and extends to the first backboard along the edge of the first main body part;
or, the buffer layer is disposed between the first main body portion and the first back plate, and the buffer portion covers the first back plate.
In the flexible display panel of the present application, the front projection of the buffer layer provided on the second back plate region on the first back plate coincides with the front projection of the first main body portion on the first back plate.
In the flexible display panel of the present application, a side of the first back plate facing the bending region is provided with a slant structure.
In the flexible display panel of the present application, the flexible substrate further includes a second region adjacent to the bending region and distant from the first region, and the flexible display panel further includes a second back plate disposed on the second region and facing the first back plate, and a second buffer portion;
the second buffer part is arranged on the second backboard, and extends to the bending area along the edge of the second backboard.
In the flexible display panel of the present application, the second buffer portion includes a second main body portion and a second extension portion;
the second main body part is correspondingly arranged on the second area, the second extension part is arranged on the bending area, and the second extension part is connected with one end of the second main body part.
In the flexible display panel, the flexible display panel further comprises a glue layer, wherein the glue layer is used for protecting the flexible substrate, and the flexible substrate comprises a first surface and a second surface which are oppositely arranged;
the first back plate is arranged on the second surface, and the elastic modulus of the adhesive layer is larger than or equal to that of the first buffer part.
In the flexible display panel of the present application, a radius of curvature of the bending region is greater than a thickness of the first buffer portion.
In the flexible display panel of the present application, the material of the first buffer portion is a polymer material.
In a second aspect, the present application provides a method for manufacturing a flexible display panel, including:
providing a flexible display panel, wherein the flexible display panel comprises a flexible substrate, and a first backboard and a second backboard which are arranged on the second surface of the flexible substrate;
and coating high polymer materials on the flexible substrate, the first backboard and the second backboard to form a first buffer part and a second buffer part on the first backboard and the second backboard respectively.
According to the flexible display panel and the preparation method thereof, the first buffer part is arranged on the first backboard, so that when the flexible display panel is bent, the first buffer part can be used for buffering stress when the display panel is bent, the risk of breakage of metal wires or electrodes on the flexible display panel is greatly reduced, and the product yield of the flexible display panel can be improved.
Drawings
In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of a flexible display panel according to the present application;
fig. 2 is a schematic structural view of an area a of the flexible display panel in fig. 1 when the area a is tiled;
fig. 3 is a schematic structural diagram of a second embodiment of a flexible display panel according to the present application;
FIG. 4 is a schematic view of the flexible display panel of FIG. 3 in a tiled configuration;
fig. 5 is a schematic structural diagram of a third embodiment of a flexible display panel according to the present application;
FIG. 6 is a schematic view of the flexible display panel of FIG. 5 in a tiled configuration;
fig. 7 is a schematic flow chart of a method for manufacturing a flexible display panel according to the present application;
FIG. 8 is a schematic flow chart of a first embodiment of forming a first buffer portion and a second buffer portion in the preparation method according to the present application;
fig. 9 is a schematic flow chart of a second embodiment of forming a first buffer portion and a second buffer portion in the preparation method provided by the application.
Detailed Description
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a first embodiment of a flexible display panel according to the present application, and fig. 2 is a schematic structural diagram of an area a of the flexible display panel in fig. 1 when the area a is tiled.
The application provides a flexible display panel 1, which comprises a flexible substrate 10, a first backboard 21 and a first buffer part 31. The flexible substrate 10 includes a flex region 11 and a first region 12. The first back plate 21 is arranged on the first region 12 of the flexible substrate 1. The first buffer portion 31 is disposed on the first back plate 21, and the first buffer portion 31 extends to the bending region 11 along the edge of the first back plate 21.
For example, the flexible substrate 10 is a Polyimide (PI) substrate. The PI substrate 10 may include various circuit structures and/or substrate structures according to actual requirements. The first back sheet 21 may be a polyester sheet (Polyethylene terephthalate, PET). The material of the first buffer portion 31 is a polymer material such as ultraviolet curable glue. The first buffer portion 31 is disposed along an edge of the first back plate 21, and a portion of the first buffer portion 31 is in contact with the bending region 11 of the flexible substrate 10.
It should be noted that, since the bending region 11 has a certain bending performance, that is, the bending region 11 can be bent into a specific arc according to actual needs, so as to reduce the size of the frame after bending. However, when the flexible substrate 10 is bent, the stress applied to the boundary between the first back plate 21 and the first region 12 is large. After bending, the risk of breakage of the metal traces or the metal electrodes on the flexible substrate 10 is also relatively high, and thus poor display of the flexible display panel 1 may be caused.
Since the first buffer portion 31 is provided on the first back plate 21, when the flexible substrate 10 is bent, the first buffer portion 31 can absorb stress generated by bending the flexible substrate 10. So that the metal traces or the metal electrodes disposed on the substrate 10 are not broken due to bending, thereby improving the product yield of the flexible display panel 1.
The first buffer portion 31 includes a first main body portion 311 and a first extension portion 312. The first body 311 is disposed on the first back plate 21, the first extension 312 is disposed along an edge of the first back plate 21 and contacts the flexible substrate 10, and the first extension 312 is connected to one end of the first body 311.
In one embodiment, the first back plate 21 includes a first back plate region 211 and a second back plate region 212 connected to each other, and the flexible substrate 10 further includes a trace region 13, where the trace region 13 is located between the first region 12 and the bending region 11. The first area 12 is used for displaying pictures. The trace area 13 may be a trace replacement area. The trace-changing area 13 may be provided with a plurality of traces, such as data lines or signal lines, etc.
The first region 12 corresponds to the first backplate region 211, and the trace region 13 corresponds to the second backplate region 212. The first body portion 311 is disposed on the second back plate region 212, and the first extension portion 312 is disposed on the bending region 11.
When the flexible substrate 10 is bent, stress generated by the bending is concentrated at the junction between the trace area 13 and the bending area 11. Since the second back plate area 212 corresponds to the trace area 13. Therefore, when the flexible substrate 10 is bent, the second back board region 212 presses the metal traces disposed at the interface between the trace region 13 and the bending region 11, resulting in breakage of the metal traces. The second back plate area 212 may also press the metal electrode disposed at the interface between the trace area 13 and the bending area 11, resulting in breakage of the metal electrode.
Thus, the first body portion 311 is disposed on the second back plate region 212, and the first extension portion 312 is disposed on the inflection region 11. When the flexible substrate 10 is bent, the first extension portion 312 can absorb the stress generated during bending, so as to reduce the risk of breaking the metal traces or the metal electrodes on the flexible substrate 10. Therefore, the product yield of the flexible display panel 1 is improved. In addition, the first extension portion 312 is connected to one end of the first main body portion 311, when the flexible display panel 1 is bent, the first extension portion 312 may be fixed on the first back plate 21, so that the first extension portion 312 may absorb stress generated during bending, and further, the product yield of the flexible display panel 1 is improved.
In one embodiment, the flexible display panel 1 may further include a buffer layer 50 disposed on the first back plate 21, the buffer layer 50 being disposed on the first body portion 311 and extending onto the first back plate 21 along an edge of the first body portion 311. As shown in fig. 1. Buffer layer 50 may be graphite or foam. When the flexible display panel 1 is bent, the first buffer portion 31 can absorb the stress generated by the flexible bending, so that the second back plate region 212 does not squeeze the metal traces or the metal electrodes disposed at the interface between the trace region 13 and the bending region 11. Moreover, when the buffer layer 50 is disposed on the first main body portion 311 and the flexible display panel 1 is bent, the stress of the first buffer portion 31 on the first back plate 21 can be reduced, so that the second back plate region 212 is prevented from being extruded to the metal wire or the metal electrode disposed at the junction between the wire region 13 and the bending region 11, thereby further improving the product yield of the flexible display panel 1.
In one embodiment, the front projection of the buffer layer 50 disposed on the second back plate region 212 on the first back plate 21 coincides with the front projection of the first body portion 311 on the first back plate 21.
In one embodiment, the flexible substrate 10 further includes a second region 14 near the bending region 11 and far from the first region 12, and the flexible display panel 1 further includes a second back plate 22 disposed on the second region 14 and facing the first back plate 21, and a second buffer portion 32. The second buffer portion 32 is disposed on the second back plate 22, and the second buffer portion 32 extends to the bending region 11 along an edge of the second back plate 22. The method for setting the second buffer portion 32 is similar to the method for setting the first buffer portion 31, and please refer to the previous embodiment, and the description is omitted herein.
The second buffer portion 32 includes a second body portion 321 and a second extension portion 322. The second region 14 may be a flex circuit board lane change area. The inflection region 11 is disposed between the trace region 13 and the second region 14. The second body portion 321 is correspondingly disposed on the second region 14, the second extension portion 322 is disposed on the bending region 11, and the second extension portion 322 is connected to one end of the second body portion 321.
In one embodiment, the flexible display panel 1 further comprises a glue layer 40. The adhesive layer 40 is used for protecting the flexible substrate 10, and preventing the flexible substrate 10 from being excessively bent, thereby causing the flexible substrate 10 to break. The glue layer 40 may be an ultraviolet curable glue. The flexible substrate 10 includes oppositely disposed first and second surfaces 101, 102. It can be understood that the present application defines a side of the flexible substrate 10 away from the display surface of the flexible display panel 1 as the second surface according to the display screen of the flexible display panel 1. The glue layer 40 is arranged on the first surface 101. The first back plate 21 is disposed on the second surface 102. Wherein, the elastic modulus of the glue layer 40 is greater than or equal to the elastic modulus of the first buffer portion 31.
The elastic modulus can be regarded as an index for measuring the difficulty of elastic deformation of the material. The larger the value, the larger the stress for causing certain elastic deformation of the material, namely the larger the rigidity of the material. I.e. the smaller the elastic deformation occurs under the action of a certain stress. For example, when the material of the first buffer portion 31 is an ultraviolet curing glue, and the material of the glue layer 40 is also an ultraviolet curing glue. At this time, the elastic moduli of the first buffer portion 31 and the adhesive layer 40 are equal. For another example, when the material of the first buffer portion 31 is not uv curable glue and the material of the glue layer 40 is uv curable glue. In order to facilitate bending of the flexible substrate 10, the elastic modulus of the first buffer portion 31 must be made smaller than that of the adhesive layer 40.
Similarly, in order to facilitate bending of the flexible substrate 10, it is necessary to ensure that the thickness of the first buffer portion 31 is not greater than the curvature of the bending region 11. That is, the radius of curvature of the inflection region 11 is greater than or equal to the thickness of the first buffer 31.
In addition, in one embodiment, the flexible display panel 1 may further include a metal layer 60. The metal layer 60 has a first contact surface 601 and a second contact surface 602 disposed opposite each other. The first body portion 311 is provided on the first contact surface 601, and the buffer layer 50 is provided on the second contact surface 602. The metal layer 60 may improve the heat dissipation capability of the flexible substrate 10.
Referring to fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a second embodiment of the flexible display panel according to the present application, and fig. 4 is a schematic structural diagram of an area a of the flexible display panel in fig. 3 when the area a is tiled. The application also provides a flexible display panel 1. The application also provides a flexible display panel 1. The flexible display panel 1 of fig. 3 differs from the flexible display panel 1 of fig. 1 in that: at the junction between the trace area 13 and the bending area 11, a side of the first back plate 21 facing the bending area 11 is provided with a bevel structure 70.
In order to further reduce the risk of the second back plate area 212 pressing against the metal tracks or metal electrodes provided at the interface of the track area 13 and the bending zone 11, the side of the first back plate 21 facing the bending zone 11 may be provided with a bevel structure 70. For example, the first back plate 21 may be cut with a cutter wheel to form a bevel structure on a side of the first back plate 21 facing the bending region 11. For another example, a laser is used to cut a side of the first back plate 21 facing the bending region 11, so as to form a bevel structure on the side of the first back plate 21 facing the bending region 11. For another example, the first back plate 21 may be cut with a cutter wheel. Then, the cut is polished by an edging machine.
By arranging the side of the first back plate 21 facing the bending region 11 into the inclined surface structure 70, the risk that the second back plate region 212 is pressed to the metal wires or the metal electrodes arranged at the junction of the wire region 13 and the bending region 11 can be further reduced, and thus the product yield of the flexible display panel 1 is improved.
Referring to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of a third embodiment of the flexible display panel according to the present application, and fig. 6 is a schematic structural diagram of an area a of the flexible display panel in fig. 5 when the area a is tiled. The application also provides a flexible display panel 1. The flexible display panel 1 of fig. 5 differs from the flexible display panel 1 of fig. 1 in that: the buffer layer 50 is disposed between the first body portion 311 and the first back plate 21, and the first extension portion 312 extends to the bending region 11 along the edge of the buffer layer 50 and the edge of the first back plate 31.
When the flexible display panel 1 is bent, the first buffer portion 31 can absorb the stress generated by the flexible bending, so that the second back plate region 212 does not squeeze the metal traces or the metal electrodes disposed at the interface between the trace region 13 and the bending region 11. Moreover, the buffer layer 50 is disposed on the first back plate 21, so that when the flexible display panel 1 is bent, the stress of the first buffer portion 31 on the first back plate 21 can be reduced, and the second back plate region 212 is prevented from being extruded to the metal wire or the metal electrode disposed at the junction of the wire region 13 and the bending region 11, thereby further improving the product yield of the flexible display panel 1.
In addition, the flexible display panel 1 may further include a metal layer 60. The metal layer 60 has a first contact surface 601 and a second contact surface 602 disposed opposite each other. The first back plate 21 is disposed on the first contact surface 601, and the buffer layer 50 is disposed on the second contact surface 602. The metal layer 60 may improve the heat dissipation capability of the flexible substrate 10.
Referring to fig. 7, fig. 7 is a schematic flow chart of a method for manufacturing a flexible display panel according to the present application. The application also provides a preparation method of the flexible display panel, which comprises the following steps:
s101, providing a flexible display panel.
The flexible display panel 1 includes a flexible substrate 10, and a first back plate 21 and a second back plate 22 disposed on a second surface 102 of the flexible substrate 10, and the specific structure is shown in the previous embodiments and will not be described herein.
S102, coating high polymer materials on the flexible substrate, the first backboard and the second backboard to form a first buffer part and a second buffer part on the first backboard and the second backboard respectively.
In an embodiment, referring to fig. 8, fig. 8 is a schematic flow chart of a first embodiment of forming a first buffer portion and a second buffer portion in the preparation method provided by the present application. First, a polymer material is applied to the first back plate 21 and the second back plate 22. So that the first body portion 311 is formed on the first back plate 21 provided on the first region 12; so that a second body portion 321 is formed on the second back plate 22 on the second region 14. Then, the flexible substrate 10 positioned at the bending region 11 is coated to form a first extension 312 at the edge of the first back plate 21 and; a second extension 322 is formed at an edge of the second backplate 22.
In another embodiment, referring to fig. 9, fig. 9 is a schematic flow chart of a second embodiment of forming a first buffer portion and a second buffer portion in the preparation method according to the present application. First, a polymer material is applied to the bending region 11 of the flexible substrate 10. When the thickness of the polymer material coated on the bending region 11 of the flexible substrate 10 is identical to the thickness of the first back plate 21, the coating is stopped. Then, the first back plate 21 and the second back plate 22 are coated with a polymer material, respectively, to form a first buffer portion 31 on the first back plate 21 and a second buffer portion 32 on the second back plate 22.
The application provides a preparation method of a flexible display panel, which comprises the steps of firstly providing a flexible display panel, and then coating high polymer materials on a flexible substrate, a first backboard and a second backboard to form a first buffer part and a second buffer part on the first backboard and the second backboard respectively. The application is provided with a first buffer part on the first backboard and a second buffer part on the second backboard. When the flexible display panel is bent, the first buffer portion can be used for buffering stress when the display panel is bent, so that the risk of breakage of metal wires or electrodes on the flexible display panel is greatly reduced. Therefore, the product yield of the flexible display panel can be improved.
The flexible display panel and the preparation method thereof provided by the embodiment of the application are described in detail, and specific examples are applied to illustrate the principle and the implementation mode of the application, and the description of the above examples is only used for helping to understand the application. Meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (13)
1. A flexible display panel, comprising:
the flexible substrate comprises a first region, a wiring region and a bending region, wherein the wiring region is positioned between the first region and the bending region;
the first backboard is arranged on the flexible substrate and comprises a first backboard area and a second backboard area which are connected with each other, the first area corresponds to the first backboard area, and the routing area corresponds to the second backboard area;
the buffer layer is arranged on one side, far away from the flexible substrate, of the first backboard and covers the first backboard area of the first backboard;
the first buffer part comprises a first main body part and a first extension part, the first main body part is arranged on one side, far away from the flexible substrate, of the first back plate, the first main body part is arranged on the second back plate area, and the first extension part extends to the bending area along the edge of the first back plate and is in contact with the flexible substrate.
2. The flexible display panel of claim 1, wherein an end of the first body portion adjacent to the buffer layer is in contact with an end of the buffer layer adjacent to the first body portion.
3. The flexible display panel of claim 1, wherein an orthographic projection of the first body portion on the first back plate is in contact with an orthographic projection of the buffer layer on the first back plate.
4. The flexible display panel of claim 1, wherein the first extension portion is connected to one end of the first body portion.
5. The flexible display panel of claim 1, wherein the flexible substrate further comprises a second region proximate the flex region and distal from the first region, the flexible display panel further comprising a second back plate and a second buffer;
the second backboard is arranged in the second area and is positioned on one side of the flexible substrate, which faces the first backboard;
the second buffer part is arranged on one side, far away from the flexible substrate, of the second backboard, and extends to the bending area along the edge of the second backboard to be in contact with the flexible substrate.
6. The flexible display panel according to claim 5, wherein the second buffer portion includes a second main body portion and a second extension portion;
the second main body part is arranged on one side, far away from the flexible substrate, of the second back plate, the second main body part is correspondingly arranged in the second area, the second extension part is arranged in the bending area, the second extension part is connected with one end of the second main body part, and the second extension part extends to be in contact with the flexible substrate along the edge of the second back plate.
7. The flexible display panel of claim 1, wherein a side of the first back plate facing the bending region is provided in a beveled structure.
8. The flexible display panel of claim 7, wherein the ramp structure and the flexible substrate define a recess, the first extension filling the recess.
9. The flexible display panel of claim 1, further comprising a glue layer for protecting the flexible substrate, the flexible substrate comprising oppositely disposed first and second surfaces;
the first back plate is arranged on the second surface, and the elastic modulus of the adhesive layer is larger than or equal to that of the first buffer part.
10. The flexible display panel of claim 9, wherein the glue layer covers the bending region of the flexible substrate and extends to the routing region of the flexible substrate.
11. The flexible display panel of claim 1, wherein a radius of curvature of the inflection region is greater than or equal to a thickness of the first buffer.
12. The flexible display panel according to claim 1, wherein the material of the first buffer portion is a polymer material.
13. The flexible display panel of claim 1, wherein the first buffer is an ultraviolet curable glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148015.8A CN117062472A (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239984.1A CN109994606B (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
| CN202311148015.8A CN117062472A (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239984.1A Division CN109994606B (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117062472A true CN117062472A (en) | 2023-11-14 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239984.1A Active CN109994606B (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
| CN202311148015.8A Pending CN117062472A (en) | 2019-03-27 | 2019-03-27 | Flexible display panel |
Family Applications Before (1)
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| US11264447B2 (en) | 2019-07-26 | 2022-03-01 | Au Optronics Corporation | Touch display device |
| US11094770B2 (en) | 2019-08-20 | 2021-08-17 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Array substrate and display panel |
| CN110610961B (en) * | 2019-08-20 | 2021-02-26 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN110718159A (en) * | 2019-09-25 | 2020-01-21 | 武汉华星光电半导体显示技术有限公司 | OLED display screen and OLED display device |
| US11050030B2 (en) | 2019-09-25 | 2021-06-29 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | OLED display and OLED display device |
| CN111028682B (en) * | 2019-11-21 | 2021-03-23 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
| CN111768705A (en) * | 2020-06-23 | 2020-10-13 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel |
| CN111653204B (en) * | 2020-07-03 | 2022-08-09 | 京东方科技集团股份有限公司 | Back plate applied to flexible display panel and flexible display panel |
| CN112071193A (en) * | 2020-09-07 | 2020-12-11 | 武汉华星光电半导体显示技术有限公司 | Backboard, manufacturing method thereof and display device |
| CN112071194B (en) * | 2020-09-07 | 2022-12-23 | 武汉华星光电半导体显示技术有限公司 | Display device and electronic apparatus |
| CN112116871A (en) * | 2020-09-23 | 2020-12-22 | 京东方科技集团股份有限公司 | Display assembly and manufacturing method thereof |
| CN113012579B (en) * | 2021-03-08 | 2023-02-28 | 京东方科技集团股份有限公司 | Display module and display device |
| CN113053244B (en) * | 2021-03-11 | 2023-04-18 | 京东方科技集团股份有限公司 | Display module, manufacturing method thereof and back film |
| CN113113457B (en) * | 2021-03-31 | 2022-09-27 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113299670A (en) * | 2021-05-31 | 2021-08-24 | 武汉华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| CN113593415B (en) * | 2021-08-02 | 2022-11-04 | 武汉华星光电半导体显示技术有限公司 | Display module and manufacturing method thereof |
| CN114038315A (en) * | 2021-10-29 | 2022-02-11 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN114170915A (en) * | 2021-12-27 | 2022-03-11 | 深圳市华星光电半导体显示技术有限公司 | Flexible display panel |
| CN115019649A (en) * | 2022-06-07 | 2022-09-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic terminal |
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| CN207602143U (en) * | 2017-12-06 | 2018-07-10 | 武汉恒生光电产业有限公司 | A kind of modular structure for display device |
| CN207800055U (en) * | 2018-02-27 | 2018-08-31 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN108735103B (en) * | 2018-05-31 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of display backboard |
| CN108777112B (en) * | 2018-06-06 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof, display module and electronic device |
| CN109087586B (en) * | 2018-07-18 | 2021-05-18 | 广州国显科技有限公司 | Display device and flexible display panel thereof |
| CN109065589B (en) * | 2018-08-09 | 2021-05-07 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN109148380B (en) * | 2018-08-21 | 2021-02-02 | 武汉华星光电半导体显示技术有限公司 | Display panel, display module and electronic device |
| CN109461382B (en) * | 2018-12-03 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | Bendable panel and manufacturing method thereof |
| CN109637382A (en) * | 2018-12-12 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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