CN110969939A - Foldable display screen and display device - Google Patents
Foldable display screen and display device Download PDFInfo
- Publication number
- CN110969939A CN110969939A CN201811139812.9A CN201811139812A CN110969939A CN 110969939 A CN110969939 A CN 110969939A CN 201811139812 A CN201811139812 A CN 201811139812A CN 110969939 A CN110969939 A CN 110969939A
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- Prior art keywords
- display panel
- flexible display
- layer
- display screen
- laminated layer
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- 239000000463 material Substances 0.000 claims abstract description 34
- 239000000945 filler Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 86
- 239000000758 substrate Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 8
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000005538 encapsulation Methods 0.000 description 7
- 239000012044 organic layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
Abstract
The invention relates to the technical field of display equipment and discloses a foldable display screen and a display device, wherein the foldable display screen comprises a flexible display panel, a first laminated layer positioned on one side of the flexible display panel and a second laminated layer positioned on one side of the flexible display panel, which is far away from the first laminated layer; the flexible display panel is divided into a folding area and a non-folding area, a filling material is arranged at least at the edge of the flexible display panel corresponding to the folding area, and the Young modulus of the filling material is smaller than that of the inorganic film layer of the flexible display panel; the first laminated layer covers the surface of the filling material, which is far away from the second laminated layer; the second laminated layer covers the surface of the filling material, which faces away from the first laminated layer. This collapsible display screen through the stress that produces when filler material release is folding, has reduced the risk of buckling, has improved the resistant bending performance of screen membrane.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a foldable display screen and a display device.
Background
In the prior art, a foldable display screen includes a flexible display panel, and an upper and a lower stacked layers located at two sides of the flexible display panel. Generally, the flexible product is easy to have the situation of edge color shortage in the folding process, the color shortage position is confirmed to be caused by the edge of the flexible display panel having cracks, an inorganic film layer in the flexible display panel is a stress concentration layer, and the stress concentration in the crack area is found through stress simulation.
Disclosure of Invention
The invention provides a foldable display screen, which reduces the bending risk and improves the bending resistance of a screen film by releasing stress generated during folding through a filling material.
In order to achieve the purpose, the invention provides the following technical scheme:
a foldable display screen comprises a flexible display panel, a first laminated layer positioned on one side of the flexible display panel and a second laminated layer positioned on one side of the flexible display panel, which is far away from the first laminated layer; wherein,
the flexible display panel is divided into a folding area and a non-folding area, a filling material is arranged at least at the edge of the flexible display panel corresponding to the folding area, and the Young modulus of the filling material is smaller than that of an inorganic film layer of the flexible display panel;
the first laminated layer covers the surface of the filling material, which faces away from the second laminated layer;
the second laminated layer covers the surface of the filling material, which faces away from the first laminated layer.
In the above foldable display screen, the flexible display panel includes a flexible display panel, and a first stacked layer and a second stacked layer located at two sides of the flexible display panel, the flexible display panel is divided into a folding area and a non-folding area, a filler is provided at least at an edge of the flexible display panel corresponding to the folding area, the young's modulus of the filler is smaller than the young's modulus of the inorganic film layer of the flexible display panel, the first stacked layer covers a surface of the filler facing away from the second stacked layer, and the second stacked layer covers a surface of the filler facing away from the first stacked layer, i.e. in the above embodiment, in the prior art, the sizes of the first stacked layer and the second stacked layer are increased, so that the filler is filled between the first stacked layer and the second stacked layer and fully contacts with the edge of the flexible display panel, since the young's modulus of the filler is smaller than the young's modulus of the inorganic film layer of the flexible display panel, the stress generated during folding is transferred to the filler by the inorganic film layer of the flexible display panel, the purpose of releasing stress is achieved, the bending risk is reduced, the bending resistance of the screen film is improved, and then cracks are effectively avoided at the edge of the flexible display screen.
Preferably, the filling material is a protective glue.
Preferably, the filler with two connection faces that flexible display panel contacted each other are concave-convex profile, and two concave-convex profile is mutually supported and connected.
Preferably, the relief profile is in the shape of a wave or a tooth.
Preferably, the thickness of the filler is 1 to 50 μm.
Preferably, the filler is connected with the flexible substrate of the flexible display panel and the inorganic film layer, and the material of the inorganic film layer is one or more of silicon nitride, silicon oxide and silicon oxynitride.
Preferably, the first lamination layer includes a polarizer, a flexible touch panel, a hardened coating, and an interlayer adhesive layer.
Preferably, the second stacked layer includes a support layer disposed on a side of the flexible display panel facing away from the first stacked layer.
The invention also provides a display device which comprises any one foldable display screen provided in the technical scheme.
Drawings
Fig. 1 is a schematic structural diagram of a foldable display screen according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a flexible display panel and a filler according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a foldable display screen provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a foldable display screen according to an embodiment of the present invention.
Icon:
1-a flexible display panel; 11-a flexible substrate; 12-an inorganic layer; 13-a metal wire; 14-an organic layer; 15. 17-encapsulating inorganic layer; 16-encapsulating an organic layer;
2-a first laminate layer; 21-a polarizer; 22-a flexible touch panel; 23-hardening the coating;
3-a second laminate layer; 31-a support layer;
4-a filler.
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.
Referring to fig. 1, the present invention provides a foldable display screen, which includes a flexible display panel 1, a first stacked layer 2 located on one side of the flexible display panel 1, and a second stacked layer 3 located on one side of the flexible display panel 1 away from the first stacked layer 2; wherein,
the flexible display panel 1 is divided into a folding area and a non-folding area, at least the edge of the flexible display panel 1 corresponding to the folding area is provided with a filling material 4, and the Young modulus of the filling material 4 is smaller than that of the inorganic film layer of the flexible display panel 1;
the first laminated layer 2 covers the surface of the filling material 4 facing away from the second laminated layer 3;
the second laminate 3 covers the surface of the filling material 4 facing away from the first laminate 2.
In the foldable display screen provided in the above embodiment of the invention, the foldable display screen includes a flexible display panel 1, and a first stacked layer 2 and a second stacked layer 3 located on two sides of the flexible display panel 1, the flexible display panel 1 is divided into a folding region and a non-folding region, at least an edge of the flexible display panel 1 corresponding to the folding region has a filler 4, a young's modulus of the filler 4 is smaller than a young's modulus of an inorganic film layer of the flexible display panel 1, the first stacked layer 2 covers a surface of the filler 4 facing away from the second stacked layer 3, and the second stacked layer 3 covers a surface of the filler 4 facing away from the first stacked layer 2, that is, in the above embodiment, in the prior art, sizes of the first stacked layer 2 and the second stacked layer 3 are increased, so that the filler 4 is filled between the first stacked layer 2 and the second stacked layer 3 and is in sufficient contact with the edge of the flexible display panel 1, because the young's modulus of the filler 4 is smaller than the young's modulus of the inorganic film layer of the flexible display panel 1, the stress that produces when folding is transmitted filler material 4 by the inorganic rete of flexible display panel 1, has reached the purpose of release stress, has reduced the risk of buckling, has improved the resistant performance of buckling of screen membrane, and then the effectual flexible display screen edge of having avoided produces the crackle.
In a specific embodiment, the filling material 4 can be a protective adhesive, and the material is simple and easy to manufacture.
In a specific embodiment, as shown in fig. 2, two connection surfaces of the filler 4 and the flexible display panel 1, which are in contact with each other, are both concave-convex profiles, and the two concave-convex profiles are connected in a matching manner, in this structure, the two connection surfaces of the filler 4 and the flexible display panel 1, which are in contact with each other, are subjected to patterning treatment, which is beneficial to fully contacting the contact surfaces of the filler 4 and the flexible display panel 1, and further beneficial to releasing stress of each film layer of the flexible display panel 1.
In particular, the shape of the concave-convex profile can be wave-shaped or tooth-shaped, etc., according to the actual situation, and is not limited herein.
In a specific embodiment, the thickness of the filling material 4 may be 1 μm to 50 μm, and in practical cases, the thickness of the filling material 4 depends on the thickness of the flexible display panel 1 since the filling material 4 is filled between the first stacked layer 2 and the second stacked layer 3 and is in sufficient contact with the flexible display panel 1.
In a specific embodiment, the filling material 4 is connected to the flexible substrate 11 of the flexible display panel 1 and an inorganic film, and the material of the inorganic film may be one or more of silicon nitride, silicon oxide, and silicon oxynitride. As shown in fig. 3, the flexible display panel 1 includes a flexible substrate 11, an inorganic layer 12, a metal line 13, an organic layer 14, and an encapsulation layer, and the encapsulation layer includes an encapsulation inorganic layer 15, an encapsulation inorganic layer 17, and an encapsulation organic layer 16. The inorganic film layer on the flexible display panel 11 comprises an inorganic layer 12, an inorganic packaging layer 15 and an inorganic packaging layer 17, the inorganic film layer is in full contact with the filling material 4, and the stress generated when the filling material releases folding can reduce the bending risk and improve the bending resistance of the screen film.
In fig. 3, the inorganic layer 12 may be a single-layer structure made of the above materials, or may be a multi-layer structure, and is not limited herein according to the actual situation. The arrangement of the encapsulation layer is not limited to that shown in fig. 3, and the encapsulation layer structure may be further multiple layers to prevent water and oxygen from damaging the panel, which is determined according to practical situations and is not limited herein.
In a specific embodiment, as shown in fig. 4, the first laminate layer 2 may specifically include a polarizer 21, a flexible touch panel 22, a hardened coating 23, and an interlayer adhesive layer 24.
Moreover, the second stacked layer 3 may specifically include a supporting layer 31 disposed on a side of the flexible display panel 1 away from the first stacked layer 2, so as to prevent the flexible display panel from being damaged in the bending process.
The invention also provides a display device which comprises any one foldable display screen provided in the technical scheme.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A foldable display screen is characterized by comprising a flexible display panel, a first laminated layer positioned on one side of the flexible display panel and a second laminated layer positioned on one side of the flexible display panel, which is far away from the first laminated layer; wherein,
the flexible display panel is divided into a folding area and a non-folding area, a filling material is arranged at least at the edge of the flexible display panel corresponding to the folding area, and the Young modulus of the filling material is smaller than that of an inorganic film layer of the flexible display panel;
the first laminated layer covers the surface of the filling material, which faces away from the second laminated layer;
the second laminated layer covers the surface of the filling material, which faces away from the first laminated layer.
2. The foldable display screen of claim 1, wherein the filler material is a protective glue.
3. The foldable display screen of claim 1, wherein two connecting surfaces of the filler material and the flexible display panel, which are in contact with each other, are both concave-convex profiles, and the concave-convex profiles are connected in a matching manner.
4. A foldable display screen in accordance with claim 3, characterised in that the relief profile is wave or tooth shaped.
5. The foldable display of claim 1, wherein the filler material has a thickness of 1 μm to 50 μm.
6. The foldable display screen of claim 1, wherein the filler is connected to the flexible substrate of the flexible display panel and an inorganic film, and the inorganic film is made of one or more of silicon nitride, silicon oxide, and silicon oxynitride.
7. The foldable display screen of claim 1, wherein the first stack of layers comprises a polarizer, a flexible touch panel, a hardened coating, and an interlayer adhesive layer.
8. A foldable display screen according to claim 7, wherein the second layer stack comprises a support layer arranged on a side of the flexible display panel facing away from the first layer stack.
9. A display device comprising a foldable display screen according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139812.9A CN110969939A (en) | 2018-09-28 | 2018-09-28 | Foldable display screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139812.9A CN110969939A (en) | 2018-09-28 | 2018-09-28 | Foldable display screen and display device |
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| CN110969939A true CN110969939A (en) | 2020-04-07 |
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| CN201811139812.9A Pending CN110969939A (en) | 2018-09-28 | 2018-09-28 | Foldable display screen and display device |
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| CN113066375A (en) * | 2021-03-26 | 2021-07-02 | 京东方科技集团股份有限公司 | Flexible support member, manufacturing method thereof and display device |
| WO2022062765A1 (en) * | 2020-09-28 | 2022-03-31 | 京东方科技集团股份有限公司 | Display module stacking structure and display device |
| WO2022141005A1 (en) * | 2020-12-28 | 2022-07-07 | 昆山国显光电有限公司 | Flexible display panel and display device |
| WO2022205245A1 (en) * | 2021-03-31 | 2022-10-06 | 华为技术有限公司 | Flexible display screen and terminal |
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| WO2022062765A1 (en) * | 2020-09-28 | 2022-03-31 | 京东方科技集团股份有限公司 | Display module stacking structure and display device |
| WO2022141005A1 (en) * | 2020-12-28 | 2022-07-07 | 昆山国显光电有限公司 | Flexible display panel and display device |
| CN114787898A (en) * | 2020-12-28 | 2022-07-22 | 昆山国显光电有限公司 | Flexible display panel and display device |
| CN114787898B (en) * | 2020-12-28 | 2023-12-29 | 昆山国显光电有限公司 | Flexible display panel and display device |
| CN113066375A (en) * | 2021-03-26 | 2021-07-02 | 京东方科技集团股份有限公司 | Flexible support member, manufacturing method thereof and display device |
| WO2022205245A1 (en) * | 2021-03-31 | 2022-10-06 | 华为技术有限公司 | Flexible display screen and terminal |
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