CN111863891A - Flexible display panel and preparation method thereof - Google Patents
Flexible display panel and preparation method thereof Download PDFInfo
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- CN111863891A CN111863891A CN202010647969.3A CN202010647969A CN111863891A CN 111863891 A CN111863891 A CN 111863891A CN 202010647969 A CN202010647969 A CN 202010647969A CN 111863891 A CN111863891 A CN 111863891A
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- flexible display
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- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The embodiment of the invention discloses a flexible display panel and a preparation method thereof, wherein at least two non-bending regions and at least one bending region between the two non-bending regions are defined, the flexible display panel comprises a buffer layer, a display device layer and a cover plate which are sequentially stacked from bottom to top, wherein the buffer layer in the bending region is provided with a groove on one surface far away from the display device layer, and the embodiment has the advantages that the groove is formed in the buffer layer, so that the bending stress is reduced, the circuit breakage or damage is avoided, and the display effect of the flexible display panel is improved.
Description
Technical Field
The invention relates to the field of display panels, in particular to a flexible display panel and a preparation method thereof.
Background
Currently, the mainstream technologies in the flat panel display industry are LCD and OLED. In recent years, OLEDs are gradually emerging due to their self-luminescence, extremely high contrast, and the like. Meanwhile, the development trend of ultra-narrow frames and full-face screens enables the market of flexible OLEDs to be wider.
The flexible OLED display panel not only can be lighter and thinner in size, but also can reduce power consumption, so that the cruising ability of corresponding products can be improved. Meanwhile, due to the flexibility and the flexibility of the flexible OLED display panel, the durability of the flexible OLED display panel is higher than that of a common hard display panel. The flexible OLED display panel can be widely applied to various products with display functions, such as tablet computers, televisions, mobile terminals and various wearable devices.
At present, the appearance of the flexible OLED display panel is mainly developed towards the direction of a curved surface form, and the large curvature and the large radian are the mainstream of the product form in a period of time in the future. However, the flexible OLED display panel is easily broken or damaged in the bending region, which affects the display effect.
Disclosure of Invention
The embodiment of the invention provides a flexible display panel and a preparation method thereof, and aims to solve the problem that the display effect is influenced by the fact that the existing panel, particularly a flexible OLED display panel, is easy to break or damage a circuit in a bending area.
In order to solve the above problems, in a first aspect, the present application provides a flexible display panel, which defines at least two non-bending regions and at least one bending region between the two non-bending regions, where the flexible display panel includes a buffer layer, a display device layer, and a cover plate, which are sequentially stacked from bottom to top, and the display device layer is used to display an image;
and a groove is formed in the buffer layer in the bending region on the surface far away from the display device layer.
Further, the flexible display panel further includes: the supporting layer is positioned between the buffer layer and the display device layer, and the groove penetrates through the buffer layer and the supporting layer to the surface of the display device layer.
Further, a shading layer, such as a shading tape, is arranged on the bottom edge of the groove.
Furthermore, the buffer layer is made of copper foil and foam.
Further, the cross-sectional shape of the groove is rectangular, semicircular or trapezoidal.
Further, the groove is formed in the middle region of the bending region.
In a second aspect, the present application provides a method for manufacturing a flexible display panel, the method comprising:
providing a buffer layer with a groove;
attaching the buffer layer to a display device layer; and
and attaching a light shielding layer to the bottom of the groove.
Furthermore, the groove of the buffer layer is formed by grooving the surface of the buffer layer by laser.
Further, a supporting layer is arranged between the buffer layer and the display device layer, and the groove penetrates through the buffer layer and the supporting layer to reach the surface of the display device layer.
Furthermore, the buffer layer is made of copper foil and foam.
Has the advantages that: according to the flexible display panel and the preparation method thereof, the display effect of the display panel is influenced by the circuit in the display device layer, and the groove is formed in the buffer layer, so that the bending stress of the panel during bending is reduced, the circuit is prevented from being broken or damaged, and the display effect of the flexible display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention in a bent state;
FIG. 3 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention in a bent state;
FIG. 5 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention in a bent state;
fig. 7 is a schematic view of a manufacturing process of a flexible display panel according to an embodiment of the present invention.
Wherein the reference numbers indicate:
110-a buffer layer; 120-a support layer; 130-display device layer; 140-a polarizer; 150-a cover plate; 160-grooves; 170-shading tape.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the description of the present invention, 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", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. 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 invention, "a plurality" means two or more unless specifically defined otherwise.
At present, the appearance of the flexible OLED display panel is mainly developed towards the direction of a curved surface form, and the large curvature and the large radian are the mainstream of the product form in a period of time in the future. However, the flexible OLED display panel is easily broken or damaged in the bending region, which affects the display effect.
Accordingly, embodiments of the present invention provide a flexible display panel and a method for manufacturing the same, which are described in detail below.
First, an embodiment of the present invention provides a flexible display panel, which defines at least two non-bending regions and at least one bending region between the two non-bending regions, where the flexible display panel includes a buffer layer 110, a display device layer 130, and a cover plate 150, which are sequentially stacked from bottom to top;
wherein the buffer layer 110 in the bending region is provided with a groove 160 on a side far away from the display device layer 130.
The display device layer 130 is used for displaying an image, and includes a substrate, an array layer, and a light emitting layer (not shown).
A polarizer 140 is further included between the display device layer 130 and the cover plate 150, and the polarizer 140 and the cover plate 150 are adhered by an optical adhesive (not shown).
Wherein the groove 160 is formed in the middle region of the bending region. The groove can be a part of the bending area or occupy the whole bending area.
The buffer layer 110 is used for buffering the display device layer 130, and prevents the display device layer from being damaged.
The number of the bending areas is two, and the number of the corresponding non-bending areas is three. The bending regions are respectively close to but not located at two ends of the display device layer 130, and the non-bending regions are respectively located at two sides of the bending regions.
On the basis of the above embodiment, in another specific embodiment of the present application, the flexible display panel further includes: a support layer 120 located between the buffer layer 110 and the display device layer 130, wherein the groove 160 penetrates through the buffer layer 110 and the support layer 120 to the surface of the display device layer 130.
The support layer 120 is made of a support film, and mainly plays a supporting role.
Referring to fig. 1 and 2, fig. 1 and 2 are respectively a schematic structural diagram of a flexible display panel and a corresponding schematic structural diagram in a bent state according to an embodiment of the present invention, in which a buffer layer 110, a support layer 120, a display device layer 130, a polarizer 140, and a cover plate 150 are sequentially stacked from bottom to top, two broken line frames represent bent regions, the number of the broken line frames is respectively close to two edges of the panel, the outer portion of each broken line frame represents a non-bent region, and the number of the broken line frames is three, and the broken line frames are located beside the bent regions. When the panel is bent, the periphery of the panel is mainly bent. The flexible display panel is provided with two grooves 160 penetrating through the buffer layer 110 and the support layer 120, the grooves 160 are located in the bending region and used for reducing bending stress, and black light-shielding adhesive tapes 170 are arranged at the bottoms of the grooves 160 and used for preventing light leakage caused by the arrangement of the grooves 160.
In another embodiment of the present application, the groove 160 is formed by enclosing a bottom edge and two side edges, and the bottom edge of the groove 160 is provided with a light shielding layer.
The light shielding layer is a black light shielding tape 170, and is mainly used for preventing light leakage of the display device after the groove 160 is formed.
In another embodiment of the present application, the buffer layer 110 is made of copper foil and foam.
In another embodiment of the present application, the cross-sectional shape of the groove 160 is a rectangle, a semicircle or a trapezoid, or may be other shapes, and it should be noted that the cross-sectional shape of the groove 160 is a shape of the display panel in an unbent state.
The present application further provides an embodiment, which is different from the above embodiments in that the number of the grooves 160 is one, the number of the corresponding bending regions is one, the grooves are located at the middle position of the panel, and the number of the non-bending regions is 2, and the grooves are located beside the bending regions. The bending shape of the panel is mainly a double-fold.
Referring to fig. 3 and 4, a schematic structural diagram of a flexible display panel and a corresponding schematic structural diagram in a bent state are respectively provided according to an embodiment of the present invention, as can be seen from the drawings, the flexible display panel includes a buffer layer 110, a support layer 120, a display device layer 130, a polarizer 140, and a cover plate 150 stacked in sequence from bottom to top, a dashed line frame represents a bent region, the number of the dashed line frame is one and is located in the middle of the panel, and an outer portion of the dashed line frame represents a non-bent region, the number of the dashed line frame is two, and the dashed line frame is located at. When the panel is bent, the panel is mainly folded and bent. The flexible display panel is provided with a groove 160 penetrating through the buffer layer 110 and the support layer 120, the groove 160 is located in the bending region to reduce bending stress, and the bottom of the groove 160 is provided with a black light-shielding tape 170 to prevent light leakage caused by the arrangement of the groove 160.
It should be noted that, in the above display panel embodiment, only the above structure is described, and it is understood that, in addition to the above structure, the display panel according to the embodiment of the present invention may further include any other necessary structure as needed, for example, a signal line layer, a planarization layer, a pixel definition layer, a light emitting material layer, and the like, and the specific structure is not limited herein.
The present application further provides an embodiment, different from the above embodiment, the number of the grooves 160 is N (N is an integer greater than 2), and the grooves are uniformly distributed on the flexible display panel, the number of the corresponding bending regions is N, and the number of the non-bending regions is N + 1.
Referring to fig. 5 and fig. 6, which are respectively a schematic structural diagram of a flexible display panel and a corresponding schematic structural diagram in a bent state according to an embodiment of the present invention, it can be seen that the flexible display panel includes a buffer layer 110, a support layer 120, a display device layer 130, a polarizer 140, and a cover plate 150 stacked in sequence from bottom to top, a number of the broken line frames represents bent regions, four of the broken line frames are uniformly distributed on the panel, a number of the broken line frames outside the broken line frames represents non-bent regions, and a number of the broken line frames is five and is located at two sides of the bent regions. When the panel is bent, the whole panel is mainly bent. The flexible display panel is provided with a groove 160 penetrating through the buffer layer 110 and the support layer 120, the groove 160 is located in the bending region to reduce bending stress, and the bottom of the groove 160 is provided with a black light-shielding tape 170 to prevent light leakage caused by the arrangement of the groove 160.
In the embodiment of the present invention, by providing a flexible display panel, since the display effect of the display panel is affected by the circuit in the display device layer 130, the groove 160 is provided on the buffer layer 110, so that the bending stress when the panel is bent is reduced, and the circuit is prevented from being broken or damaged, thereby improving the display effect of the flexible display panel.
In order to better explain the present invention, an embodiment of the present invention further provides a method for manufacturing a flexible display panel, please refer to fig. 7, where the method includes:
s10 providing a buffer layer 110 having a groove 160;
s20 attaching the buffer layer 110 to the display device layer 130; and
s30 attaches a light-shielding layer to the bottom of the groove 160.
On the basis of the above embodiment, in another specific embodiment of the present application, the method further includes: s40 bends the display device layer 130, and defines a bent region as a bent region and a non-bent region as a non-bent region.
On the basis of the above embodiment, in another specific embodiment of the present application, the method further includes: s50 sequentially stacking the polarizer 140 and the optical adhesive on the surface of the display device layer 130.
In another specific embodiment of the present application, unlike the above-described embodiments, the order of S50 and S40 may be interchanged.
On the basis of the above embodiment, in another specific embodiment of the present application, the method further includes: s60 attaching the optical cement with the cover plate 150. The cover plate may be a glass cover plate.
In another embodiment of the present application, the groove 160 of the buffer layer 110 is formed by laser grooving the surface of the buffer layer 110.
In another embodiment of the present application, a support layer 120 is further disposed between the buffer layer 110 and the display device layer 130, and the groove 160 penetrates through the buffer layer 110 and the support layer 120 to a surface of the display device layer 130.
In another embodiment of the present application, the buffer layer 110 is made of copper foil and foam.
It should be noted that, in the foregoing display panel embodiment, only the preparation process of the flexible display panel is described, and it is understood that, in addition to the above process, any other necessary preparation process may be included according to needs in the embodiment of the present invention, and is not limited herein.
The embodiment of the invention provides the preparation method of the flexible display panel, which is different from the traditional method that the buffer layer 110 is directly attached to the display device layer 130, but the buffer layer 110 is grooved and the light shielding layer is arranged after the buffer layer 110 is attached to the display device layer 130, so that the circuit is prevented from being broken or damaged, the display effect of the flexible display panel is improved, and a new thought is provided for the preparation of the flexible display panel.
On the basis of the above embodiments, the present application further provides a display device, such as a mobile phone, a liquid crystal television, or a wearable device, including the flexible display panel provided in the above embodiments or manufactured by the above method for manufacturing the flexible display panel.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and a part which is not described in detail in a certain embodiment may refer to the detailed descriptions in the other embodiments, and is not described herein again.
In a specific implementation, each unit or structure may be implemented as an independent entity, or may be combined arbitrarily to be implemented as one or several entities, and the specific implementation of each unit or structure may refer to the foregoing method embodiment, which is not described herein again.
The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
The flexible display panel and the method for manufacturing the same provided by the embodiment of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in detail herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A flexible display panel is characterized in that at least two non-bending regions and at least one bending region between the two non-bending regions are defined, and the flexible display panel comprises a buffer layer, a display device layer and a cover plate which are sequentially stacked from bottom to top;
and a groove is formed in the buffer layer in the bending region on the surface far away from the display device layer.
2. The flexible display panel of claim 1, further comprising: the supporting layer is positioned between the buffer layer and the display device layer, and the groove penetrates through the buffer layer and the supporting layer to the surface of the display device layer.
3. The flexible display panel of claim 1, wherein a bottom edge of the groove is provided with a light-shielding layer.
4. The flexible display panel of claim 1, wherein the buffer layer is made of copper foil and foam.
5. The flexible display panel of claim 1, wherein the cross-sectional shape of the groove is rectangular, semicircular, or trapezoidal.
6. The flexible display panel of claim 1, wherein the groove is formed in a middle region of the bending region.
7. A method for manufacturing a flexible display panel, the method comprising:
providing a buffer layer with a groove;
attaching the buffer layer to a display device layer; and
and attaching a light shielding layer to the bottom of the groove.
8. The method of claim 7, wherein the grooves of the buffer layer are formed by laser grooving the surface of the buffer layer.
9. The method according to claim 7, wherein a support layer is further disposed between the buffer layer and the display device layer, and the groove penetrates through the buffer layer and the support layer to a surface of the display device layer.
10. The method of claim 7, wherein the buffer layer is made of copper foil or foam.
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| CN202010647969.3A CN111863891A (en) | 2020-07-07 | 2020-07-07 | Flexible display panel and preparation method thereof |
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| CN202010647969.3A CN111863891A (en) | 2020-07-07 | 2020-07-07 | Flexible display panel and preparation method thereof |
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| CN112614433A (en) * | 2020-12-29 | 2021-04-06 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and flexible display device |
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| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113257122A (en) * | 2021-04-07 | 2021-08-13 | 合肥维信诺科技有限公司 | Supporting layer group for display module, display module and preparation method of display module |
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| CN113707018B (en) * | 2021-08-26 | 2023-09-01 | 京东方科技集团股份有限公司 | Display module and display device |
| CN113707018A (en) * | 2021-08-26 | 2021-11-26 | 京东方科技集团股份有限公司 | Display module and display device |
| CN113920877B (en) * | 2021-10-20 | 2023-11-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| CN113920877A (en) * | 2021-10-20 | 2022-01-11 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| CN114694512A (en) * | 2022-04-25 | 2022-07-01 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| CN115148099A (en) * | 2022-05-25 | 2022-10-04 | 昆山国显光电有限公司 | Display screen assembly, preparation method thereof and electronic equipment |
| CN115148099B (en) * | 2022-05-25 | 2024-02-02 | 昆山国显光电有限公司 | Display screen assembly, manufacturing method thereof and electronic equipment |
| CN115223454A (en) * | 2022-08-11 | 2022-10-21 | 京东方科技集团股份有限公司 | Display module, preparation method thereof and display device |
| CN115223454B (en) * | 2022-08-11 | 2023-12-22 | 京东方科技集团股份有限公司 | Display module, preparation method thereof and display device |
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