CN111430413A - Flexible display panel and flexible display device - Google Patents
Flexible display panel and flexible display device Download PDFInfo
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- CN111430413A CN111430413A CN202010244531.0A CN202010244531A CN111430413A CN 111430413 A CN111430413 A CN 111430413A CN 202010244531 A CN202010244531 A CN 202010244531A CN 111430413 A CN111430413 A CN 111430413A
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- 239000000758 substrate Substances 0.000 claims abstract description 93
- 239000010409 thin film Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/841—Self-supporting sealing arrangements
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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
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- 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
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Abstract
The embodiment of the application provides a flexible display panel and a flexible display device. The flexible display panel that this embodiment provided, through set up first transparent buffer layer in pixel drive circuit below, because first transparent buffer layer includes a plurality of first bellyings and is located the first concave part between the first bellyings, make flexible display panel at the in-process of buckling, the stress concentration of first substrate is in first concave part department, thereby guarantee that the pixel drive circuit who is located on the first bellyings can not receive the influence of stress and damage, also can guarantee that organic light emitting unit can not produce the problem of rete separation because of the influence of stress, therefore, flexible display panel's life can be promoted.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible display panel and a flexible display device.
Background
Organic light-Emitting diodes (Organic L light-Emitting diodes, O L ED) can be made into flexible display devices, and the flexible O L ED display devices have the characteristics of flexibility, impact resistance, convenience in wearing and the like, but components in a circuit, especially thin film transistors, are easily damaged in the using process, so that the phenomenon that the bending part is disconnected and cannot be normally driven is generated, and the service life of the flexible display is influenced.
Disclosure of Invention
This application is directed against the shortcoming of current mode, provides a flexible display panel and flexible display device for solve among the prior art flexible display panel and cause the technical problem of component damage among the circuit structure easily at the technological process of buckling.
In a first aspect, embodiments of the present application provide a flexible display panel including a first substrate and a second substrate bonded by a sealant;
the first substrate comprises a first substrate, a first transparent buffer layer, a plurality of organic light-emitting units and pixel driving circuits which are in one-to-one correspondence with the organic light-emitting units; the first transparent buffer layer is positioned on one side of the first substrate and comprises a plurality of first protruding parts and first lower concave parts positioned between the first protruding parts; the pixel driving circuit is positioned on one side of the first transparent buffer layer, which is far away from the first substrate, and the orthographic projection of the pixel driving circuit on the first substrate is positioned in the orthographic projection of the first bulge part on the first substrate; the organic light emitting unit is positioned on one side, away from the first transparent buffer layer, of the pixel driving circuit, and the orthographic projection of the organic light emitting unit on the first substrate is positioned in the orthographic projection of the first protruding part on the first substrate;
the second substrate comprises a second substrate, and the second substrate is arranged opposite to the first substrate and is positioned on one side of the organic light-emitting unit, which is far away from the first substrate.
Optionally, the second substrate further includes a second transparent buffer layer, the second transparent buffer layer is located on one side of the second substrate close to the first substrate, the second transparent buffer layer includes a plurality of second protruding portions and a second lower concave portion located between the second protruding portions, and an orthographic projection of the second protruding portions on the first substrate coincides with an orthographic projection of the first protruding portions on the first substrate.
Optionally, the organic light emitting display units are arranged in an organic light emitting display unit column along a first direction, the first protruding portion is a strip extending along the first direction, and the organic light emitting display unit column corresponds to the first protruding portion one to one, or the organic light emitting display unit columns are located on the same first protruding portion.
Optionally, the first protruding portions are pillars arranged in an array, the first protruding portions are surrounded by the first lower concave portions, the organic light emitting units are in one-to-one correspondence with the first protruding portions, or the organic light emitting units are located on the same first protruding portions.
Optionally, the material of the first transparent buffer layer comprises an optical glue.
Optionally, the shape of the first undercut is trapezoidal, sinusoidal or arcuate.
Optionally, the pixel driving circuit includes a driving thin film transistor, and the driving thin film transistor includes:
the active layer is positioned on one side, far away from the first substrate, of the first transparent buffer layer;
the grid electrode is positioned on one side of the active layer close to or far away from the first transparent buffer layer;
and the source electrode and the drain electrode are positioned on one side of the active layer, which is far away from the first transparent buffer layer, and are electrically connected with the active layer through via holes respectively.
Optionally, the organic light emitting unit comprises:
the anode layer is positioned on one side of the driving thin film transistor, which is far away from the first substrate;
the organic light-emitting layer is positioned on one side of the anode layer, which is far away from the driving thin film transistor;
the cathode layer is positioned on one side of the organic light-emitting layer far away from the anode layer;
wherein the drain electrode of the driving thin film transistor is electrically connected with the anode layer.
Optionally, the first substrate further includes a planarization layer covering the source electrode and the drain electrode and filled in the first lower recess, and the planarization layer has an elasticity different from that of the first transparent buffer layer.
In a second aspect, embodiments of the present application provide a flexible display device, which includes the flexible display panel described above.
The technical scheme provided by the embodiment of the application has the following beneficial technical effects:
the flexible display panel that this embodiment provided, through set up first transparent buffer layer in pixel drive circuit below, because first transparent buffer layer includes a plurality of first bellyings and is located the first concave part between the first bellyings, make flexible display panel at the in-process of buckling, the stress concentration of first substrate is in first concave part department, thereby guarantee that the pixel drive circuit who is located on the first bellyings can not receive the influence of stress and damage, also can guarantee that organic light emitting unit can not produce the problem of rete separation because of the influence of stress, therefore, flexible display panel's life can be promoted.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic cross-sectional structural diagram of a flexible display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic cross-sectional structure diagram of another flexible display panel provided in an embodiment of the present application;
fig. 3 is a schematic top view of a first substrate according to an embodiment of the present disclosure;
fig. 4 is a schematic top view of another first substrate according to an embodiment of the present disclosure;
fig. 5 is a schematic top view illustrating a first substrate according to an embodiment of the present disclosure;
fig. 6 is a schematic top view illustrating a first substrate according to an embodiment of the present disclosure;
fig. 7 is a schematic view illustrating a film structure of a first substrate according to an embodiment of the present disclosure;
fig. 8 is a schematic frame diagram of a structure of a flexible display device according to an embodiment of the present disclosure.
Reference numerals:
1-a first substrate; 11-a first substrate; 12-a first transparent buffer layer; 121-a first boss; 122 — a first lower recess; 13-a pixel drive circuit; 131-an active layer; 132 — a first insulating layer; 133-a gate; 134-a second insulating layer; 135-source electrode; 136-a drain electrode; 14-an organic light emitting display unit; 141-an anode layer; 142-an organic light-emitting layer; 143-a cathode layer; 15-a planarization layer; 16-pixel definition layer;
2-a second substrate; 21-a second substrate; 22-a second transparent buffer layer; 221-a second boss; 222-a second lower recess;
3-sealing glue;
t-drive thin film transistor.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
When the flexible organic light-emitting display device is used, components in a circuit, especially thin film transistors, of the flexible organic light-emitting display device are easily damaged, and then the phenomenon that the flexible organic light-emitting display device cannot be normally driven due to disconnection is generated at a bent part, so that the service life of the flexible display device is influenced.
The application provides a flexible display panel and flexible display device aims at solving the above technical problem of prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
The present application provides a flexible display panel, as shown in fig. 1, the flexible display panel provided in this embodiment includes a first substrate 1 and a second substrate 2 bonded by a sealant 3.
The first substrate 1 includes a first substrate 11, a first transparent buffer layer 12, a plurality of organic light emitting units 14, and pixel driving circuits 13 corresponding to the organic light emitting units 14 one to one; the first transparent buffer layer 12 is located at one side of the first substrate 11, and the first transparent buffer layer 12 includes a plurality of first protrusions 121 and first lower recesses 122 located between the first protrusions 121; the pixel driving circuit 13 is positioned on one side of the first transparent buffer layer 12 away from the first substrate 11, and an orthographic projection of the pixel driving circuit 13 on the first substrate 11 is positioned in an orthographic projection of the first protrusion 121 on the first substrate 11; the organic light emitting unit 14 is located on a side of the pixel driving circuit 13 away from the first transparent buffer layer 12, and an orthographic projection of the organic light emitting unit 14 on the first substrate 11 is located within an orthographic projection of the first protrusion 121 on the first substrate 11.
The second substrate 2 includes a second substrate 21, and the second substrate 21 is disposed opposite to the first substrate 11 and is located on a side of the organic light emitting unit 14 away from the first substrate 11.
The flexible display panel provided by this embodiment, by arranging the first transparent buffer layer 12 below the pixel driving circuit 13, because the first transparent buffer layer 12 includes a plurality of first protruding portions 121 and the first concave portions 122 located between the first protruding portions 121, in the bending process of the flexible display panel, the stress of the first substrate 1 is concentrated at the first concave portions 122, it is ensured that the pixel driving circuit 13 located on the first protruding portions 121 is not damaged due to the influence of the stress, it is also ensured that the organic light emitting unit 14 does not generate the problem of film separation due to the influence of the stress, and therefore, the service life of the flexible display panel can be prolonged.
Specifically, as the flexible display panel, the first substrate 11 should be a flexible substrate, for example, a polyimide film (PI) is used as the first substrate.
Optionally, as shown in fig. 2, in the flexible display panel provided in this embodiment, the second substrate 2 further includes a second transparent buffer layer 22, the second transparent buffer layer 22 is located on a side of the second substrate 21 close to the first substrate 11, the second transparent buffer layer 22 includes a plurality of second protruding portions 221 and second concave portions 222 located between the second protruding portions 221, and an orthographic projection of the second protruding portions 221 on the first substrate 11 coincides with an orthographic projection of the first protruding portions 121 on the first substrate 11.
Specifically, in the manufacturing process, the first substrate 1 and the second substrate 2 are manufactured separately, and then the first substrate 1 and the second substrate 2 are combined and bonded with the sealant 3.
According to the flexible display panel provided by the embodiment, the second transparent buffer layer 22 matched with the first transparent buffer layer 12 is arranged on the second substrate 2, and the second transparent buffer layer 22 comprises a plurality of second protruding portions 221 and second lower concave portions 222 located between the second protruding portions 221, so that stress at the first lower concave portions 122 of the flexible display panel in the first substrate 1 in the bending process can be shared, and the service life of the flexible display panel is further prolonged.
Optionally, as shown in fig. 2, in the flexible display panel provided in this embodiment, the material of the first transparent buffer layer 12 includes an optical glue. Specifically, optical glue with stable and transparent properties, such as OC glue, may be selected as the first transparent buffer layer 12.
It should be noted that, although the first lower concave portions 122 in the flexible display panel shown in fig. 1 and fig. 2 are all rectangular, in practical applications, the first lower concave portions 122 may also be inverted trapezoidal, sinusoidal or arc-shaped. The shape of the first lower recess 122 can be achieved by adjusting the etching method and the process parameters of the etching process.
In the flexible display panel provided by the present application, the first protrusion portion 121 may be set to have different shapes according to the bending requirement of the flexible display panel, which will be described in detail below.
Specifically, as shown in fig. 3 and 4, in the flexible display panel provided in this embodiment, the plurality of organic light emitting display units are arranged in a first direction to form an organic light emitting display unit column, the first protruding portion is a strip extending along the first direction, the organic light emitting display unit column corresponds to the first protruding portion 121 one to one, or the plurality of organic light emitting display unit columns are located on the same first protruding portion 121.
Specifically, as shown in fig. 3, one organic light emitting display unit column is located on one first protrusion 121, that is, the organic light emitting display unit column corresponds to the first protrusion 121 one to one.
As shown in fig. 4, two organic light emitting display unit columns are located on the same first protrusion 121, but this is merely an exemplary illustration, and three or more organic light emitting display unit columns may be located on the same first protrusion 121. Preferably, three organic light emitting display unit columns corresponding to the organic light emitting units of red, blue and green colors, respectively, may be positioned on the same first protrusion 121.
In the flexible display panel provided by this embodiment, the first protruding portion 121 is designed to be a long strip, so that the stress of the flexible display panel, which takes the first direction as the axis direction in the bending process, can be concentrated on the first lower concave portion 122, and each first protruding portion 121 is provided with one or more organic light emitting display unit columns, so that the process difficulty is low, and the flexible display panel is particularly suitable for the flexible display panel which is bent only along one direction.
Specifically, as shown in fig. 5 and fig. 6, in the flexible display panel provided in this embodiment, the first protruding portions 121 are pillars arranged in an array, the first protruding portions 121 are surrounded by the first lower concave portions 122, and the organic light emitting units 14 are in one-to-one correspondence with the first protruding portions 121, or a plurality of organic light emitting units 14 are located on the same first protruding portion 121.
As shown in fig. 6, preferably, three organic light emitting units 14 of different colors are located on the same first protrusion 121, that is, one organic light emitting unit 14 of red, one organic light emitting unit 14 of green, and one organic light emitting unit 14 of blue are located on the same first protrusion 121, and the sub-pixels corresponding to the three organic light emitting units 14 of different colors constitute one display pixel. Of course, two or more than three organic light emitting units 14 may be located on the same first protrusion 121.
The flexible display panel provided by the embodiment is characterized in that the first protruding portion 121 is designed to be a cylinder, so that when the flexible display panel is bent by taking any direction as an axis, stress can be concentrated in the first lower concave portion 122, a good protection effect is achieved on the pixel driving circuit 13 in the flexible display panel, and the service life of the flexible display panel is prolonged.
Further, as shown in fig. 7, the present embodiment provides a flexible display panel in which the pixel driving circuit 13 includes a driving thin film transistor T, and the driving thin film transistor T includes:
an active layer 131 located on a side of the first transparent buffer layer 12 away from the first substrate 11;
a gate electrode 132 positioned at a side of the active layer 131 close to or far from the first transparent buffer layer 12;
the source electrode 135 and the drain electrode 136 are positioned on a side of the active layer 131 away from the first transparent buffer layer 12, and the source electrode 135 and the drain electrode 136 are electrically connected to the active layer 131 through vias, respectively.
Specifically, the gate electrode 133 of the driving thin film transistor T shown in fig. 7 is located on a side of the active layer 131 away from the first transparent buffer layer 12, that is, the gate electrode 133 is located above the active layer 131, that is, the driving thin film transistor T is a thin film transistor with a top gate structure. When the gate electrode 133 is positioned at a side of the active layer 131 close to the first transparent buffer layer 12, that is, the gate electrode 133 is positioned below the active layer 131, the driving thin film transistor T is a thin film transistor of a bottom gate structure.
Specifically, as shown in fig. 7, for the driving thin film transistor T of the top gate structure, a first insulating layer 132 between the active layer 131 and the gate electrode 133, and a second insulating layer 134 between the gate electrode 133 and the source electrode 135, and between the gate electrode 133 and the drain electrode 136 are further included.
Further, as shown in fig. 7, the present embodiment provides a flexible display panel in which the organic light emitting unit 14 includes:
an anode layer 141 on a side of the driving thin film transistor T away from the first substrate;
an organic light emitting layer 142 on a side of the anode layer 141 away from the driving thin film transistor T;
a cathode layer 143 on a side of the organic light emitting layer 142 away from the anode layer 141;
the drain electrode 136 of the driving thin film transistor T is electrically connected to the anode layer 141.
Specifically, although not shown in fig. 7, the organic light emitting unit 14 may further include one or more of an electron injection layer, an electron transport layer, a hole injection layer, and a hole transport layer to improve the light emitting efficiency of the organic light emitting unit 14.
Specifically, as shown in fig. 7, the flexible display panel provided in this embodiment further includes a pixel defining layer 16, where the pixel defining layer 16 includes a plurality of openings and a retaining wall surrounding the openings, and an orthogonal projection of the openings on the first substrate 11 is located within an orthogonal projection of the anode layer 141 on the first substrate 11.
Optionally, as shown in fig. 7, in the flexible display panel provided in this embodiment, the first substrate 1 further includes a planarization layer 15, the planarization layer 15 covers the source electrode 135 and the drain electrode 136 and is filled in the first lower concave portion 122, and an elasticity of the planarization layer 15 is different from an elasticity of the first transparent buffer layer 12.
In general, the planarization layer 15 is made of a resin material, and the planarization layer 15 is made of a resin material having a different elasticity from that of the first transparent buffer layer 12, so that the planarization layer 15 filled in the first lower concave portion 122 can better share the stress applied to the first lower concave portion 122 during the bending process of the flexible display panel, thereby further prolonging the service life of the flexible display panel; in addition, the planarization layer 15 can reduce the difficulty of climbing the anode layer 141 and the cathode layer 143 thereon, and reduce the difficulty of manufacturing the flexible display panel.
Based on the same inventive concept, an embodiment of the present application provides a flexible display device, as shown in fig. 8, the flexible display device includes the flexible display panel in the above embodiment, and has the beneficial effects of the flexible display panel in the above embodiment, which are not described herein again.
Further, as shown in fig. 8, the flexible display device provided in this embodiment further includes a driving chip and a power supply to provide a driving signal and power for the flexible display panel.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
the flexible display panel that this embodiment provided, through set up first transparent buffer layer in pixel drive circuit below, because first transparent buffer layer includes a plurality of first bellyings and is located the first concave part between the first bellyings, make flexible display panel at the in-process of buckling, the stress concentration of first substrate is in first concave part department, thereby guarantee that the pixel drive circuit who is located on the first bellyings can not receive the influence of stress and damage, also can guarantee that organic light emitting unit can not produce the problem of rete separation because of the influence of stress, therefore, flexible display panel's life can be promoted.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A flexible display panel includes a first substrate and a second substrate bonded by a sealant;
the first substrate comprises a first substrate, a first transparent buffer layer, a plurality of organic light-emitting units and pixel driving circuits which are in one-to-one correspondence with the organic light-emitting units; the first transparent buffer layer is positioned on one side of the first substrate and comprises a plurality of first protruding parts and first lower concave parts positioned between the first protruding parts; the pixel driving circuit is positioned on one side of the first transparent buffer layer, which is far away from the first substrate, and the orthographic projection of the pixel driving circuit on the first substrate is positioned in the orthographic projection of the first bulge part on the first substrate; the organic light emitting unit is positioned on one side, away from the first transparent buffer layer, of the pixel driving circuit, and the orthographic projection of the organic light emitting unit on the first substrate is positioned in the orthographic projection of the first protruding part on the first substrate;
the second substrate comprises a second substrate, and the second substrate is arranged opposite to the first substrate and is positioned on one side of the organic light-emitting unit, which is far away from the first substrate.
2. The flexible display panel of claim 1,
the second substrate further comprises a second transparent buffer layer, the second transparent buffer layer is located on one side, close to the first substrate, of the second substrate, the second transparent buffer layer comprises a plurality of second protruding portions and second lower concave portions located between the second protruding portions, and orthographic projections of the second protruding portions on the first substrate are overlapped with orthographic projections of the first protruding portions on the first substrate.
3. The flexible display panel of claim 2,
the organic light emitting display units are arranged in an organic light emitting display unit row along a first direction, the first protruding portion is in a strip shape extending along the first direction, the organic light emitting display unit row and the first protruding portion are in one-to-one correspondence, or the organic light emitting display unit rows are located on the same first protruding portion.
4. The flexible display panel of claim 2,
the first protruding portions are columns arranged in an array mode, the first protruding portions are surrounded by the first lower concave portions, the organic light emitting units are in one-to-one correspondence with the first protruding portions, or the organic light emitting units are located on the same first protruding portions.
5. The flexible display panel according to any one of claims 1-4,
the material of the first transparent buffer layer comprises optical cement.
6. The flexible display panel of claim 5,
the shape of the first lower concave part is trapezoidal, sinusoidal or arc.
7. The flexible display panel of claim 6, wherein the pixel driving circuit comprises a driving thin film transistor comprising:
the active layer is positioned on one side, far away from the first substrate, of the first transparent buffer layer;
the grid electrode is positioned on one side of the active layer close to or far away from the first transparent buffer layer;
and the source electrode and the drain electrode are positioned on one side of the active layer, which is far away from the first transparent buffer layer, and are electrically connected with the active layer through via holes respectively.
8. The flexible display panel of claim 7, wherein the organic light emitting unit comprises:
the anode layer is positioned on one side of the driving thin film transistor, which is far away from the first substrate;
the organic light-emitting layer is positioned on one side of the anode layer, which is far away from the driving thin film transistor;
the cathode layer is positioned on one side of the organic light-emitting layer far away from the anode layer;
wherein the drain electrode of the driving thin film transistor is electrically connected with the anode layer.
9. The flexible display panel of claim 8,
the first substrate further includes a planarization layer covering the source electrode and the drain electrode and filled in the first lower recess portion, the planarization layer having an elasticity different from that of the first transparent buffer layer.
10. A flexible display device comprising the flexible display panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010244531.0A CN111430413B (en) | 2020-03-31 | 2020-03-31 | Flexible display panel and flexible display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010244531.0A CN111430413B (en) | 2020-03-31 | 2020-03-31 | Flexible display panel and flexible display device |
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| CN111430413B CN111430413B (en) | 2023-04-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259582A (en) * | 2020-10-15 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and electronic equipment |
| WO2024022292A1 (en) * | 2022-07-28 | 2024-02-01 | 维沃移动通信有限公司 | Flexible display screen and electronic device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140132487A1 (en) * | 2012-11-14 | 2014-05-15 | Lg Display Co., Ltd. | Flexible display device |
| CN108258057A (en) * | 2018-01-19 | 2018-07-06 | 云谷（固安）科技有限公司 | Flexible substrates structure and preparation method thereof and flexible device |
| CN108695443A (en) * | 2018-05-22 | 2018-10-23 | 京东方科技集团股份有限公司 | Encapsulating structure and display device |
| CN108922911A (en) * | 2018-07-31 | 2018-11-30 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109411513A (en) * | 2018-09-28 | 2019-03-01 | 云谷（固安）科技有限公司 | Flexible display panels and flexible display apparatus |
| CN110429177A (en) * | 2019-07-24 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | A kind of flexibility OLED display panel and preparation method thereof |
-
2020
- 2020-03-31 CN CN202010244531.0A patent/CN111430413B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140132487A1 (en) * | 2012-11-14 | 2014-05-15 | Lg Display Co., Ltd. | Flexible display device |
| CN108258057A (en) * | 2018-01-19 | 2018-07-06 | 云谷（固安）科技有限公司 | Flexible substrates structure and preparation method thereof and flexible device |
| CN108695443A (en) * | 2018-05-22 | 2018-10-23 | 京东方科技集团股份有限公司 | Encapsulating structure and display device |
| CN108922911A (en) * | 2018-07-31 | 2018-11-30 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109411513A (en) * | 2018-09-28 | 2019-03-01 | 云谷（固安）科技有限公司 | Flexible display panels and flexible display apparatus |
| CN110429177A (en) * | 2019-07-24 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | A kind of flexibility OLED display panel and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259582A (en) * | 2020-10-15 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and electronic equipment |
| WO2022077576A1 (en) * | 2020-10-15 | 2022-04-21 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and electronic device |
| US11925061B2 (en) | 2020-10-15 | 2024-03-05 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display panel and electronic device |
| WO2024022292A1 (en) * | 2022-07-28 | 2024-02-01 | 维沃移动通信有限公司 | Flexible display screen and electronic device |
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| CN111430413B (en) | 2023-04-18 |
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