CN112542498A - Flexible display panel, manufacturing method thereof and flexible display device - Google Patents
Flexible display panel, manufacturing method thereof and flexible display device Download PDFInfo
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- CN112542498A CN112542498A CN202011404723.XA CN202011404723A CN112542498A CN 112542498 A CN112542498 A CN 112542498A CN 202011404723 A CN202011404723 A CN 202011404723A CN 112542498 A CN112542498 A CN 112542498A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000006260 foam Substances 0.000 claims abstract description 118
- 229920000742 Cotton Polymers 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000010030 laminating Methods 0.000 claims abstract description 33
- 239000010409 thin film Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 239000013067 intermediate product Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The application provides a flexible display panel and a manufacturing method thereof, and a flexible display device, wherein the flexible display panel comprises: the display layer is provided with at least two positioning structures, including a first positioning structure and a second positioning structure; the foam layer is provided with at least two positioning structures, wherein each positioning structure comprises a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure; the corresponding relation of the first positioning structure and the third positioning structure and the corresponding relation of the second positioning structure and the fourth positioning structure are used for realizing the positioning of the display layer and the foam layer in the display layer and foam layer laminating process, so that the display layer is laminated with the foam layer. Thereby make the machine carry out accurate counterpoint according to location structure through set up location structure's mode respectively on showing layer and the cotton layer of bubble, improve the laminating precision that shows layer and the cotton layer of bubble.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a flexible display panel, a manufacturing method thereof, and a flexible display device.
Background
With the rapid development of electronic devices and the continuous improvement of living standards of people, various electronic devices such as mobile phones, tablet computers and the like are increasingly popularized, the electronic devices become indispensable communication tools in the life of people, and the rapid development of the display panel industry is promoted.
The production of the display panel needs to pass through the laminating process of the composite material. In the related art, methods generally employed are: the composite material and the display panel are manually aligned and attached after alignment, and the attachment precision is low due to the fact that the composite material is attached through the manual alignment method.
Disclosure of Invention
The display panel of this application is through setting up location structure on showing layer and the cotton layer of bubble to realize accurate counterpoint laminating, improved the laminating precision on the cotton layer of bubble and demonstration layer.
The embodiment of the application provides a flexible display panel, includes:
the display layer is provided with at least two positioning structures, including a first positioning structure and a second positioning structure;
the foam layer is provided with at least two positioning structures, wherein each positioning structure comprises a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure;
wherein, first location structure with the corresponding relation of third location structure, and the corresponding relation of second location structure with fourth location structure is used for show the layer with the cotton layer laminating in-process of bubble is realized show the layer with the location on the cotton layer of bubble, so that show the layer with the cotton layer laminating of bubble.
In the flexible display panel that this application embodiment provided, connect third location structure with fourth location structure's first line segment is in projection on the display layer, with connect first location structure with the coincidence of second line segment of second location structure, just the central point of first line segment is in projection on the display layer with the coincidence of the central point of second line segment is used for the display layer with the cotton layer laminating in-process of bubble is realized the display layer with the location on the cotton layer of bubble, so that the display layer with the cotton layer laminating of bubble.
In the flexible display panel provided in the embodiment of the present application, the first positioning structure and the second positioning structure are integrally formed with one surface of the display layer;
the third positioning structure and the fourth positioning structure are integrally formed with one surface of the foam layer.
In the flexible display panel provided in the embodiment of the present application, a shape of the first positioning structure is the same as a shape of the third positioning structure, and a shape of the second positioning structure is the same as a shape of the fourth positioning structure;
the first location structure is in set up the position on the display layer, with the third location structure is in set up the position on the cotton layer of bubble and correspond to each other, the second location structure is in set up the position on the display layer, with the fourth location structure is in set up the position on the cotton layer of bubble corresponds to each other.
In the flexible display panel provided in the embodiment of the present application, the display layer includes a main display area and an auxiliary display area disposed around the main display area, and the main display area and the auxiliary display area are disposed in a mutually bent manner;
the bubble cotton layer includes the main part and assists the body show the layer with the cotton layer laminating in-process of bubble, the main part with the laminating of main display area, assist the body with assist the laminating of display area.
In the flexible display panel that this application embodiment provided, set up and be in the quantity of the location structure of display layer is the same with the setting the quantity of the location structure of bubble cotton layer.
In the flexible display panel provided in the embodiment of the present application, the display layer includes:
a substrate base plate;
the thin film transistor array layer is arranged on the substrate base plate;
the OLED device layer is arranged on the thin film transistor array layer;
the thin film packaging layer is arranged on the OLED device layer and covers the OLED device layer;
the first positioning structure and the second positioning structure are arranged on one surface, far away from the thin film transistor array layer, of the substrate base plate.
The embodiment of the present application further provides a flexible display device, where the flexible display device includes a flexible display panel, and the flexible display panel is the flexible display panel according to any one of the embodiments of the present application.
The embodiment of the present application further provides a method for manufacturing a flexible display panel, including:
providing a display layer and a foam layer;
forming at least two positioning structures on the display layer, wherein the positioning structures comprise a first positioning structure and a second positioning structure;
forming at least two positioning structures on the foam layer, wherein the positioning structures comprise a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure;
based on the corresponding relation between the first positioning structure and the third positioning structure and the corresponding relation between the second positioning structure and the fourth positioning structure, the display layer is attached to the foam layer.
In the manufacturing method of the flexible display panel provided in the embodiment of the present application, the laminating based on the first positioning structure, the second positioning structure, the third positioning structure and the fourth positioning structure the display layer and the foam layer are laminated, including:
fixing the display layer;
controlling the foam layer to approach the display layer, and continuously detecting whether the third positioning structure corresponds to the first positioning structure or not and whether the fourth positioning structure corresponds to the second positioning structure or not;
if the third positioning structure does not correspond to the first positioning structure or the fourth positioning structure does not correspond to the second positioning structure, moving the foam layer until the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure;
and if the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure, adhering the display layer and the foam layer according to the current position relationship.
The flexible display panel of the embodiment of the application comprises: the display layer is provided with at least two positioning structures, including a first positioning structure and a second positioning structure; the foam layer is provided with at least two positioning structures, wherein each positioning structure comprises a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure; wherein, first location structure with the corresponding relation of third location structure, and the corresponding relation of second location structure with fourth location structure is used for show the layer with the cotton layer laminating in-process of bubble is realized show the layer with the location on the cotton layer of bubble, so that show the layer with the cotton layer laminating of bubble. Thereby make the machine carry out accurate counterpoint according to location structure through set up location structure's mode respectively on showing layer and the cotton layer of bubble, can improve the laminating precision that shows layer and the cotton layer of bubble.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a flexible display device according to an embodiment of the present application.
Fig. 2 is a diagram of a first intermediate product in a process of manufacturing a flexible display panel according to an embodiment of the present application;
fig. 3 is a diagram of a second intermediate product in a process of manufacturing a flexible display panel according to an embodiment of the present application;
fig. 4 is a diagram of a third intermediate product in a process of manufacturing a flexible display panel according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a manufacturing method of a flexible display panel according to an embodiment of the present application.
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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application provides a flexible display panel and a flexible display device, the flexible display panel can be integrated in the flexible display device, and the flexible display device comprises but is not limited to intelligent wearable equipment, a smart phone, a tablet computer and a smart television.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flexible display device 1000 according to an embodiment of the present disclosure. The flexible display device 1000 may include a flexible display panel 100, a control circuit 200, and a housing 300. It should be noted that the flexible display device 1000 shown in fig. 1 is not limited to the above, and may further include other devices, such as a camera, an antenna structure, a thread unlocking module, and the like.
Wherein the flexible display panel 100 is disposed on the housing 200.
In some embodiments, the flexible display panel 100 may be fixed to the housing 200, and the flexible display panel 100 and the housing 300 form a closed space to accommodate the control circuit 200 and the like.
In some embodiments, the housing 300 may be made of a flexible material, such as a plastic housing or a silicone housing.
The control circuit 200 is installed in the housing 300, the control circuit 200 may be a main board of the flexible display device 1000, and one, two or more functional components of a battery, an antenna structure, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, a processor, and the like may be integrated on the control circuit 200.
The flexible display panel 100 is mounted in the housing 300, and the flexible display panel 100 is electrically connected to the control circuit 200 to form a display surface of the flexible display device 1000. The flexible display panel 100 may include a display area and a non-display area. The display area may be used to display a screen of the flexible display device 1000 or provide a user with touch control. The non-display area may be used to set various functional components.
Referring to fig. 2, fig. 2 is a diagram of a first intermediate product in a process of manufacturing a flexible display panel according to an embodiment of the present application, in which the flexible display panel 100 includes:
the display layer 10, the display layer 10 is provided with at least two positioning structures, including a first positioning structure 101 and a second positioning structure 102.
The foam layer 20, the foam layer 20 is provided with at least two positioning structures, including a third positioning structure 201 and a fourth positioning structure 202. The first 101 and third 201 positioning structures correspond. The second positioning structure 102 corresponds to the fourth positioning structure 202.
The corresponding relation between the first positioning structure 101 and the third positioning structure 201, and the corresponding relation between the second positioning structure 102 and the fourth positioning structure 202 are used for positioning the display layer 10 and the foam layer 20 in the process of attaching the display layer 10 to the foam layer 20, so that the display layer 10 is attached to the foam layer 20.
Wherein, because the base plate that sets up in flexible display panel 100 and apron are fragile article (for example glassware) mostly, consequently for avoiding the damage of fragile article, need paste the one in one side of display layer 10 and have the cotton layer 20 of bubble of cushioning effect to when flexible display panel 100 drops or receives the impact, the cotton layer 20 of bubble can play the cushioning effect, in order to protect display layer 10. Wherein, the foam layer 20 comprises copper foil, graphite and foam. The copper foil, graphite and foam may be arranged in sequence.
Specifically, if the shape of the foam layer 20 is captured by a device camera (CCD), and then the central point of the foam layer 20 is calculated to position the foam layer 20 and the display layer 10, since burrs or irregularities (for example, a bent portion) exist on the surface of the foam layer 20, on one hand, the CCD is difficult to capture the complete shape structure of the foam layer 20; on the other hand, even if some measures are taken to forcibly grab the shape of the foam layer 20, the complete shape structure of the foam layer 20 cannot be grabbed, so that the central point of the foam layer 20 cannot be accurately determined, and the bonding precision of the display layer 10 and the foam layer 20 is low.
Based on the above problem, at least two positioning structures, including the first positioning structure 101 and the second positioning structure 102, may be respectively disposed on the display layer 10, and at least two positioning structures, including the third positioning structure 201 and the fourth positioning structure 202, may be correspondingly disposed on the foam layer 20. The third positioning structure 201 corresponds to the first positioning structure 101, and the fourth positioning structure 202 corresponds to the second positioning structure 102, so that when the display layer 10 and the foam layer 20 need to be attached, the display layer 10 and the foam layer 20 are positioned by identifying the first positioning structure 101, the second positioning structure 102, the third positioning structure 201 and the fourth positioning structure 202, and the display layer 10 and the foam layer 20 are attached. The correspondence here may be that the first positioning structure 101 extends from the left side to the right side of the display layer 10 to a first distance, the third positioning structure 201 extends from the left side to the right side of the foam layer 20 to a first distance, and finally, after the display layer 10 and the foam layer 20 are attached, the first positioning structure 101 and the third positioning structure 201 are overlapped. The second positioning structure 102 and the fourth positioning structure 202 correspond to the same process, and are not described herein again.
The flexible display panel of the embodiment of the application comprises: the display layer is provided with at least two positioning structures, including a first positioning structure and a second positioning structure; the foam layer is provided with at least two positioning structures, wherein each positioning structure comprises a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure; wherein, first location structure with the corresponding relation of third location structure, and the corresponding relation of second location structure with fourth location structure is used for show the layer with the cotton layer laminating in-process of bubble is realized show the layer with the location on the cotton layer of bubble, so that show the layer with the cotton layer laminating of bubble. Thereby make the machine carry out accurate counterpoint according to location structure through set up location structure's mode respectively on showing layer and the cotton layer of bubble, can improve the laminating precision that shows layer and the cotton layer of bubble.
In some embodiments, a projection of the first line segment L1 connecting the third positioning structure 201 and the fourth positioning structure 202 on the display layer 10 coincides with the second line segment L2 connecting the first positioning structure 101 and the second positioning structure 102, and a projection of the central point D1 of the first line segment L1 on the display layer 10 coincides with the central point D2 of the second line segment L2, so as to position the display layer 10 and the foam layer 20 during the attaching process of the display layer 10 and the foam layer 20, so that the display layer 10 and the foam layer 20 are attached. For example, the first line segment L1 is obtained by connecting the center point of the third positioning structure 201 and the center point of the fourth positioning structure 202, and then the second line segment L2 also needs to be obtained by connecting the center point of the first positioning structure 101 and the center point of the second positioning structure 102.
The calibration standard of the alignment is that the projection of the first line segment L1 on the display layer 10 coincides with the second line segment L2, and the projection of the center point D1 of the first line segment L1 on the display layer 10 coincides with the center point D2 of the second line segment L2. Therefore, the display layer 10 and the foam layer 20 after being bonded and aligned need to meet the above-mentioned calibration standard, and the bonding precision of the display layer 10 and the foam layer 20 can be ensured.
In some embodiments, the first positioning structure 101 and the second positioning structure 102 are integrally formed with one side of the display layer 10;
the third positioning structure 201 and the fourth positioning structure 202 are integrally formed with one surface of the foam layer 20.
The first positioning structure 101 and the second positioning structure 102 may be integrally formed along with one side of the display layer 10 when the display layer 10 is prepared, the third positioning structure 201 and the fourth positioning structure 202 may be integrally formed along with one side of the foam layer 20 when the foam layer 20 is prepared, and the specific forming mode may be injection molding.
In some embodiments, a first mold for manufacturing the display layer and a second mold for manufacturing the foam layer may be provided, and some positions may be reserved for filling the positioning structures according to requirements, so that when the display layer and the foam layer are manufactured by using the first mold and the second mold, materials for manufacturing the positioning structures are filled in the reserved positions, and then the display layer and the foam layer including the positioning structures are manufactured.
In addition, it is also possible to form the first positioning structure 101 and the second positioning structure 102 on the display layer 10 and form the third positioning structure 201 and the fourth positioning structure 202 on the foam layer 20 through a patterning process (e.g., etching or exposure).
In some embodiments, the shape of the first positioning structure 101 is the same as the shape of the third positioning structure 201, and the shape of the second positioning structure 102 is the same as the shape of the fourth positioning structure 202.
For example, the first positioning structure 101 and the third positioning structure 201 may be both T-shaped structures. The second positioning structure 102 and the fourth positioning structure 202 may be cross-shaped structures.
Wherein, the thickness of the first positioning structure 101 and the second positioning structure 102 may be less than the thickness of the display layer 10. The thickness of the third positioning structure 201 and the fourth positioning structure 202 may be less than the thickness of the foam layer 20. The first positioning structure 101 and the second positioning structure 102 may not protrude from the outer surface of the display layer 10, and may also protrude from the outer surface of the display layer 10, and the third positioning structure 201 and the fourth positioning structure 202 may not protrude from the outer surface of the foam layer 20, and may also protrude from the outer surface of the foam layer 20, which is not specifically limited herein, taking actual requirements as the standard.
The position of the first positioning structure 101 on the display layer 10 corresponds to the position of the third positioning structure 201 on the foam layer 20, and the position of the second positioning structure 102 on the display layer 10 corresponds to the position of the fourth positioning structure 202 on the foam layer 20.
In order to achieve the attachment alignment, the setting position of the first positioning structure 101 on the display layer 10 should correspond to the setting position of the third positioning structure 201 on the foam layer 20, so as to achieve the alignment of the first positioning structure 101 and the third positioning structure 201. The setting positions correspond to each other: when the display layer 10 and the foam layer 20 are completely attached, the first positioning structure 101 and the third positioning structure 201 are overlapped. The setting position of the second positioning structure 102 is the same as the setting position of the fourth positioning structure 202, and is not described herein again.
In some embodiments, the number of positioning structures provided on the display layer 10 is the same as the number of positioning structures provided on the foam layer 20.
For example, the number of the positioning structures disposed on the display layer 10 and the number of the positioning structures disposed on the foam layer 20 may be 2, that is, the first positioning structure 101 and the second positioning structure 102 disposed on the display layer 10, and the third positioning structure 201 and the fourth positioning structure 202 disposed on the foam layer 20.
For another example, the number of the positioning structures disposed on the display layer 10 and the number of the positioning structures disposed on the foam layer 20 may be 3, and the positioning structures are the first positioning structure 101, the second positioning structure 102, and the fifth positioning structure disposed on the display layer 10, and the third positioning structure 201, the fourth positioning structure 202, and the sixth positioning structure disposed on the foam layer 20. The corresponding relation between the first positioning structure 101 and the third positioning structure 201, the corresponding relation between the second positioning structure 102 and the fourth positioning structure 202, and the corresponding relation between the fifth positioning structure and the sixth positioning structure are used for positioning the display layer 10 and the foam layer 20 in the process of attaching the display layer 10 and the foam layer 20, so that the display layer 10 and the foam layer 20 are attached.
It should be noted that, the number of the positioning structures disposed on the display layer 10 and the positioning structures disposed on the foam layer 20 is not limited in the embodiments of the present application, and the specific number of the positioning structures is subject to actual requirements.
In some embodiments, referring to fig. 3, fig. 3 is a diagram of a second intermediate product in a process of manufacturing a flexible display panel according to an embodiment of the present application. The display layer 10 includes a main display area a and an auxiliary display area B arranged around the main display area a. The main display area A and the auxiliary display area B are arranged in a mutually bent mode;
the foam layer 20 comprises a main body 21 and an auxiliary body 22, wherein the main body 21 is attached to the main display area A, and the auxiliary body 22 is attached to the auxiliary display area B in the attaching process of the display layer 10 and the foam layer 20.
The corresponding relation between the first positioning structure 101 and the third positioning structure 102, and the corresponding relation between the second positioning structure 201 and the fourth positioning structure 202 are used for positioning the main body 21 and the main display area a and positioning the auxiliary body 22 and the auxiliary display area B in the process of attaching the display layer 10 and the foam layer 20, so that the main body 21 is attached to the main display area a, and the auxiliary body 22 is attached to the auxiliary display area B.
In some embodiments, a projection of the first line segment L1 connecting the third positioning structure 201 and the fourth positioning structure 202 on the display layer 10 coincides with the second line segment L2 connecting the first positioning structure 101 and the second positioning structure 102, and a projection of the central point D1 of the first line segment L1 on the display layer 10 coincides with the central point D2 of the second line segment L2, so as to position the display layer 10 and the foam layer 20 during the attaching process of the display layer 10 and the foam layer 20, so that the display layer 10 and the foam layer 20 are attached.
The calibration standard of the alignment is that the projection of the first line segment L1 on the display layer 10 coincides with the second line segment L2, and the projection of the center point D1 of the first line segment L1 on the display layer 10 coincides with the center point D2 of the second line segment L2. Therefore, the display layer 10 and the foam layer 20 after being bonded and aligned need to meet the above-mentioned calibration standard, and the bonding precision of the display layer 10 and the foam layer 20 can be ensured.
In some embodiments, as shown in fig. 4, fig. 4 is a diagram of a third intermediate product in a process of manufacturing a flexible display panel provided in an example of the present application. The first positioning structure 101 and the second positioning structure 102 are groove structures formed on the display layer 10, the third positioning structure 201 and the fourth positioning structure 202 are protrusion structures formed by the foam layer 20 protruding outwards, and the horizontal width of the groove structures is the same as the horizontal width of the protrusion structures, so that the protrusion structures are accommodated in the groove structures.
As shown in fig. 4, the first positioning structure 101 and the second positioning structure 102 are groove structures formed in the display layer 10, and the third positioning structure 201 and the fourth positioning structure 202 are protrusion structures formed by the foam layer 20 protruding outward. Through the mode that sets up groove structure and protruding structure, even if counterpoint the inaccuracy, also can make protruding structure stretch into groove structure through the mode of removing each other in, and then realize the laminating counterpoint of bubble cotton layer 20 and display layer 10.
Specifically, the first positioning structure 101 and the second positioning structure 102 may be a protruding structure protruding outward from the display layer 10, and the third positioning structure 201 and the fourth positioning structure 202 may be a groove structure formed inward from the foam layer 20, which is not limited herein.
In some embodiments, the display layer 10 includes:
a substrate base plate;
the thin film transistor array layer is arranged on the substrate base plate;
the OLED device layer is arranged on the thin film transistor array layer;
the thin film packaging layer is arranged on the OLED device layer and covers the OLED device layer;
the first positioning structure 101 and the second positioning structure 102 are disposed on a surface of the substrate away from the thin film transistor array layer.
The substrate is made of Polyimide (PI), and has high temperature resistance and good bending property.
Thin Film Transistor (TFT)) array layer is composed of a plurality of TFTs arranged in an array.
The OLED device layer comprises an anode, a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, an electron injection layer and a cathode which are sequentially arranged above the thin film transistor array layer 103.
The thin film packaging layer is mainly of a laminated structure of a barrier layer and a buffer layer which are arranged on the OLED device layer, and completely covers the OLED device layer. The barrier layer plays a role in blocking water and oxygen so as to prevent water vapor or oxygen from invading the OLED device layer to cause light emission darkening; the buffer layer is mainly used for eliminating stress, gaps and the like between the two barrier layers.
An embodiment of the present application further provides a method for manufacturing a flexible display panel, as shown in fig. 5, fig. 5 is a schematic flow chart of the method for manufacturing a flexible display panel provided in the embodiment of the present application, and the method includes:
Wherein, because the base plate that sets up among the flexible display panel and apron are fragile article (for example glassware) mostly, consequently for avoiding the damage of fragile article, need the cotton layer of bubble that has the buffering effect of laminating one side on the display layer to when flexible display panel drops or receives the impact, the cotton layer of bubble can play the cushioning effect.
Wherein, first location structure and second location structure can be along with the arbitrary one side integrated into one piece on demonstration layer when preparation shows the layer, and third location structure and fourth location structure can be along with arbitrary one side integrated into one piece on the cotton layer of bubble when preparation bubble is cotton, and specific fashioned mode can be for moulding plastics. Specifically, each positioning structure can be arranged on one side of the display layer or the foam layer to be attached. In addition, the first positioning structure and the second positioning structure can be formed on the display layer through a patterning process (e.g., etching or exposure).
In the embodiment of the present application, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure: when the display layer is completely attached to the foam layer, the first positioning structure is overlapped with the third positioning structure, and the second positioning structure is overlapped with the fourth positioning structure.
And 304, laminating the display layer and the foam layer based on the corresponding relation between the first positioning structure and the third positioning structure and the corresponding relation between the second positioning structure and the fourth positioning structure.
Wherein, can be based on the corresponding relation of first location structure and third location structure to and the corresponding relation of second location structure and fourth location structure, laminating bubble cotton layer and demonstration layer.
In some embodiments, based on first location structure, second location structure, third location structure and fourth location structure, laminating display layer and the laminating of bubble cotton layer include:
(1) fixing the display layer;
(2) controlling the foam layer to approach the display layer, and continuously detecting whether the third positioning structure corresponds to the first positioning structure or not and whether the fourth positioning structure corresponds to the second positioning structure or not;
(3) if the third positioning structure does not correspond to the first positioning structure or the fourth positioning structure does not correspond to the second positioning structure, moving the foam layer until the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure;
(4) if the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure, the display layer and the foam layer are attached according to the current position relation.
For example, the display layer may be fixed first to keep the display layer still. And then, controlling the foam layer to approach the display layer, and continuously detecting whether the third positioning structure corresponds to the first positioning structure or not and whether the fourth positioning structure corresponds to the second positioning structure or not. Wherein, the correspondence means: the first positioning structure is superposed with the third positioning structure, and the second positioning structure is superposed with the fourth positioning structure.
Therefore, when the third positioning structure does not correspond to the first positioning structure and the fourth positioning structure does not correspond to the second positioning structure, it indicates that the display layer cannot be completely attached to the foam layer even though the display layer and the foam layer are attached, and then the foam layer needs to be moved until the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure. And when the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure, the display layer and the foam layer can be completely attached if the display layer and the foam layer are attached at the moment. Then, can laminate display layer and the cotton layer of bubble according to current position relation this moment to realize the laminating of display layer and the cotton layer of bubble.
In some embodiments, the attaching the display layer to the foam layer based on the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure may include:
(1) fixing the display layer;
(2) controlling the foam layer to approach the display layer, and continuously detecting whether the projection of a first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is superposed with a second line segment connecting the first positioning structure and the second positioning structure, and whether the projection of the midpoint of the first line segment on the display layer is superposed with the midpoint of the second line segment;
(3) if the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is not coincident with the second line segment connecting the first positioning structure and the second positioning structure, or the projection of the midpoint of the first line segment on the display layer is not coincident with the midpoint of the second line segment, moving the foam layer until the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is coincident with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer is coincident with the midpoint of the second line segment;
(4) if the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is superposed with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer is superposed with the midpoint of the second line segment, the display layer and the foam layer are attached according to the current position relationship.
For example, the display layer may be fixed first to keep the display layer still. And then, controlling the foam layer to approach the display layer, and continuously detecting whether the projection of a first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is superposed with a second line segment connecting the first positioning structure and the second positioning structure, and whether the projection of the midpoint of the first line segment on the display layer is superposed with the midpoint of the second line segment. It can be understood that when the display layer is completely attached to the foam layer, the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer coincides with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer coincides with the midpoint of the second line segment,
therefore, when the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is not overlapped with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer is not overlapped with the midpoint of the second line segment, it indicates that even if the display layer and the foam layer are attached, the display layer cannot be completely attached to the foam layer, and then the foam layer needs to be moved until the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is overlapped with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer is overlapped with the midpoint of the second line segment. And when the projection of the first line segment connecting the third positioning structure and the fourth positioning structure on the display layer is superposed with the second line segment connecting the first positioning structure and the second positioning structure, and the projection of the midpoint of the first line segment on the display layer is superposed with the midpoint of the second line segment, it indicates that if the display layer and the foam layer are laminated at the moment, the display layer and the foam layer can be completely laminated. Then, can laminate display layer and the cotton layer of bubble according to current position relation this moment to realize the laminating of display layer and the cotton layer of bubble.
The manufacturing method of the flexible display panel comprises the following steps: providing a display layer and a foam layer; forming at least two positioning structures on the display layer, wherein the positioning structures comprise a first positioning structure and a second positioning structure; forming at least two positioning structures on the foam layer, wherein the positioning structures comprise a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure; based on the corresponding relation between the first positioning structure and the third positioning structure and the corresponding relation between the second positioning structure and the fourth positioning structure, the display layer is attached to the foam layer. Thereby make the machine carry out accurate counterpoint according to location structure through set up location structure's mode respectively on showing layer and the cotton layer of bubble, can improve the laminating precision that shows layer and the cotton layer of bubble.
The flexible display panel, the manufacturing method thereof, and the flexible display device provided in the embodiments of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation manner of the present application, and the description of the embodiments above is only used to help understanding the technical scheme and the core concept of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A flexible display panel, comprising:
the display layer is provided with at least two positioning structures, including a first positioning structure and a second positioning structure;
the foam layer is provided with at least two positioning structures, wherein each positioning structure comprises a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure;
wherein, first location structure with the corresponding relation of third location structure, and the corresponding relation of second location structure with fourth location structure is used for show the layer with the cotton layer laminating in-process of bubble is realized show the layer with the location on the cotton layer of bubble, so that show the layer with the cotton layer laminating of bubble.
2. The flexible display panel according to claim 1, wherein a projection of a first line segment connecting the third positioning structure and the fourth positioning structure on the display layer coincides with a second line segment connecting the first positioning structure and the second positioning structure, and a projection of a central point of the first line segment on the display layer coincides with a central point of the second line segment, so that the display layer and the foam layer are positioned in a process of attaching the display layer and the foam layer, so that the display layer and the foam layer are attached.
3. The flexible display panel of claim 2, wherein the first and second positioning structures are integrally formed with a face of the display layer;
the third positioning structure and the fourth positioning structure are integrally formed with one surface of the foam layer.
4. The flexible display panel of claim 3, wherein the first positioning structure has the same shape as the third positioning structure, and the second positioning structure has the same shape as the fourth positioning structure;
the first location structure is in set up the position on the display layer, with the third location structure is in set up the position on the cotton layer of bubble and correspond to each other, the second location structure is in set up the position on the display layer, with the fourth location structure is in set up the position on the cotton layer of bubble corresponds to each other.
5. The flexible display panel of claim 1, wherein the display layer comprises a main display area and an auxiliary display area disposed around the main display area, the main display area and the auxiliary display area being disposed in a curved arrangement with respect to each other;
the bubble cotton layer includes the main part and assists the body show the layer with the cotton layer laminating in-process of bubble, the main part with the laminating of main display area, assist the body with assist the laminating of display area.
6. The flexible display panel of any of claims 1 to 5, wherein the number of positioning structures provided on the display layer is the same as the number of positioning structures provided on the foam layer.
7. The flexible display panel of any of claims 1 to 5, wherein the display layer comprises:
a substrate base plate;
the thin film transistor array layer is arranged on the substrate base plate;
the OLED device layer is arranged on the thin film transistor array layer;
the thin film packaging layer is arranged on the OLED device layer and covers the OLED device layer;
the first positioning structure and the second positioning structure are arranged on one surface, far away from the thin film transistor array layer, of the substrate base plate.
8. A flexible display device, characterized in that the flexible display device comprises a flexible display panel, the flexible display panel being the flexible display panel according to any one of claims 1 to 7.
9. A method for manufacturing a flexible display panel is characterized by comprising the following steps:
providing a display layer and a foam layer;
forming at least two positioning structures on the display layer, wherein the positioning structures comprise a first positioning structure and a second positioning structure;
forming at least two positioning structures on the foam layer, wherein the positioning structures comprise a third positioning structure and a fourth positioning structure, the first positioning structure corresponds to the third positioning structure, and the second positioning structure corresponds to the fourth positioning structure;
based on the corresponding relation between the first positioning structure and the third positioning structure and the corresponding relation between the second positioning structure and the fourth positioning structure, the display layer is attached to the foam layer.
10. The method of claim 9, wherein the attaching the display layer to the foam layer based on the first, second, third, and fourth positioning structures comprises:
fixing the display layer;
controlling the foam layer to approach the display layer, and continuously detecting whether the third positioning structure corresponds to the first positioning structure or not and whether the fourth positioning structure corresponds to the second positioning structure or not;
if the third positioning structure does not correspond to the first positioning structure or the fourth positioning structure does not correspond to the second positioning structure, moving the foam layer until the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure;
and if the third positioning structure corresponds to the first positioning structure and the fourth positioning structure corresponds to the second positioning structure, adhering the display layer and the foam layer according to the current position relationship.
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