CN114913773A - Foldable display panel - Google Patents
Foldable display panel Download PDFInfo
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- CN114913773A CN114913773A CN202210532997.XA CN202210532997A CN114913773A CN 114913773 A CN114913773 A CN 114913773A CN 202210532997 A CN202210532997 A CN 202210532997A CN 114913773 A CN114913773 A CN 114913773A
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- flexible
- display panel
- display module
- bending
- foldable display
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- 238000005452 bending Methods 0.000 claims abstract description 109
- 239000011521 glass Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000012790 adhesive layer Substances 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 28
- 239000003292 glue Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The invention provides a foldable display panel, which is divided into a bending area and a non-bending area, and comprises a back plate, a display module positioned on the back plate, ultrathin flexible glass positioned on the display module, and a flexible covering window positioned on the ultrathin flexible glass; the corresponding bending area of the ultrathin flexible glass is provided with a flexible structure; the display module comprises pixels arranged in an array, and the flexible structure does not influence the light emitting quality of the pixels; according to the invention, the flexible structure is arranged in the bending area corresponding to the ultrathin flexible glass UTG with the same thickness, the flexible structure can improve the bending performance of the bending area, does not influence the light emitting quality of the foldable display panel, improves the problem of nonuniform bending performance and light emitting quality of the bending area in the prior art, and can also reduce the deformation glue stacking phenomenon generated in the long-time bending process of the optical transparent glue material.
Description
Technical Field
The application relates to the technical field of display, in particular to a foldable display panel.
Background
The folding display panel is a future technical development trend, folding brings a new development direction of the display industry, and currently, the active matrix organic light emitting diode display panel is more concerned about, and has unique bending and folding characteristics, so that the folding display panel can be prepared into folding display devices in various forms, is convenient to carry and store when going out, and is widely concerned about in the market.
The development process from the initial fixed curvature SF to the current foldable DF is a development process, wherein the application of foldable curved cover plates is more and more extensive, and the foldable cover plates are developed from ultrathin flexible glass at the present stage by adding a hard coating on transparent polyimide. With the application of the foldable panel becoming more mature, the bending performance and impact resistance of the foldable display panel need to be improved before large-area popularization is realized, and because there are conflicting points between the bending performance and the impact resistance, film differentiation in a bending area and a non-bending area is an important direction for improving the bending performance and the impact resistance at present. For example, UTG of bent products made of ultrathin flexible glass (UTG) is further thinned in a bending area, so that the bending performance can be improved, and the impact resistance of a non-bending area is not lost.
After the ultrathin flexible glass (UTG) in the bending area is thinned, the ultrathin flexible glass (UTG) in the non-bending area is still in normal thickness, the bending performance can be increased by the UTG in the thinning of the bending area, the original impact resistance can be kept in the non-bending area, but when the display panel is flattened, the problems that the light-emitting quality is not uniform and the glue is piled in the optical glue due to the fact that the thickness of the ultrathin flexible glass UTG is different in the bending area and the non-bending area are caused, and improvement is needed.
Disclosure of Invention
This application is according to prior art problem, a collapsible display panel is provided, can solve the ultra-thin flexible glass UTG attenuate back of the district of buckling among the prior art, the ultra-thin flexible glass UTG in non-bending region still is in normal thickness, the UTG of district of buckling attenuate can increase the bending property, original shock resistance can be remain in non-bending region, but bending region and non-bending region are different because of ultra-thin flexible glass UTG thickness when display panel exhibition is flat, cause that the light-emitting quality is inhomogeneous and optical cement piles gluey problem.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the embodiment of the invention provides a foldable display panel, which is divided into a bending area and a non-bending area, and comprises a back plate, a display module group positioned on the back plate, ultrathin flexible glass positioned on the display module group, and a flexible covering window positioned on the ultrathin flexible glass; the ultrathin flexible glass is provided with a flexible structure corresponding to the bending area;
the display module comprises pixels arranged in an array, and the flexible structure does not influence the light emitting quality of the pixels.
According to an optional embodiment of the present invention, the flexible structure is disposed to avoid the pixel light exit path.
According to an alternative embodiment of the invention, the flexible structure comprises elongated grooves arranged in an array, the elongated grooves being arranged parallel and/or perpendicular to the bending axis of the bending zone.
According to an alternative embodiment of the present invention, the flexible structure includes dot-shaped circular holes arranged in an array, and each dot-shaped circular hole is located between two adjacent pixels.
According to an optional embodiment of the present invention, the flexible structure includes a hollow structure and a flexible material filled in the hollow structure, and a refractive index of the flexible material is the same as a refractive index of the ultrathin flexible glass.
According to an optional embodiment of the present invention, the hollow structure is a blind hole or a through hole.
According to an optional embodiment of the present invention, a first optical transparent adhesive layer is disposed between the ultra-thin flexible glass and the display module, and a second optical transparent adhesive layer is disposed between the ultra-thin flexible glass and the flexible cover window.
According to an optional embodiment of the invention, the display module is an OLED display module, a light emitting device is disposed in a pixel opening of the OLED display module, and the flexible structure avoids the light emitting device.
According to an optional embodiment of the present invention, the display module is a liquid crystal display module, the liquid crystal display module includes an array substrate, a color film substrate, and a liquid crystal layer located between the array substrate and the color film substrate, the color film substrate includes a color resist layer and a black matrix located between the color resist layers, and the flexible structure is aligned with the black matrix.
According to an optional embodiment of the present invention, the material of the back plate is sus stainless steel or copper foil, and the material of the flexible cover window is transparent polyimide.
The invention has the beneficial effects that: the embodiment of the invention provides a foldable display panel, which is divided into a bending area and a non-bending area, and comprises a back plate, a display module positioned on the back plate, ultrathin flexible glass positioned on the display module, and a flexible covering window positioned on the ultrathin flexible glass; the corresponding bending area of the ultrathin flexible glass is provided with a flexible structure; the display module comprises pixels arranged in an array, and the flexible structure does not influence the light emitting quality of the pixels; according to the invention, the flexible structure is arranged in the bending area corresponding to the ultrathin flexible glass UTG with the same thickness, the flexible structure can improve the bending performance of the bending area, does not influence the light emitting quality of the foldable display panel, improves the problem of nonuniform bending performance and light emitting quality of the bending area in the prior art, and can also reduce the deformation glue stacking phenomenon generated in the long-time bending process of the optical transparent glue material.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 to fig. 3 are schematic diagrams illustrating a film structure of a foldable display panel in the prior art.
Fig. 4 is a schematic diagram of a film layer structure of a foldable display panel according to an embodiment of the present invention.
Fig. 5a to 5h are schematic diagrams illustrating a flexible structure of a foldable display panel according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of another film structure of a foldable display panel according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of another film structure of a foldable display panel according to an embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals, and broken lines in the drawings indicate that the elements do not exist in the structures, and only the shapes and positions of the structures are explained.
As shown in fig. 1, a foldable display panel 10 in the prior art is divided into a bending region 11 and a non-bending region 12, where the foldable display panel 10 includes a back plate 13, a display module 14 located on the back plate, a first optical transparent adhesive layer 15 located on the display module 14, an ultra-thin flexible glass 16 located on the first optical transparent adhesive layer 15, a second optical transparent adhesive layer 17 located on the ultra-thin flexible glass 16, and a cover window 18 located on the second optical transparent adhesive layer 17, where the ultra-thin flexible glass 16 is a monolithic equal-thickness layer, and an impact resistance in the bending region 11 is the same as an impact resistance in the non-bending region 12, resulting in poor bending performance of the foldable display panel 10.
Fig. 2 is modified based on fig. 1, as shown in fig. 2, a foldable display panel 10 in the prior art is divided into a bending region 11 and a non-bending region 12, the foldable display panel 10 includes a back plate 13, a display module 14 located on the back plate, a first optical transparent adhesive layer 15 located on the display module 14, an ultra-thin flexible glass 161 located on the first optical transparent adhesive layer 15, a rigid layer 162 located on the ultra-thin flexible glass 161, a second optical transparent adhesive layer 17 located on the rigid layer 162, and a cover window 18 located on the second optical transparent adhesive layer 17, a thickness of the ultra-thin flexible glass 161 in the bending region 11 is smaller than a thickness of the ultra-thin flexible glass 161 in the non-bending region 12. As shown in fig. 3, the light intensity S2 of the bending region 11 is not consistent with the light intensity S1 of the non-bending region 12, and the region 19 has the problem of stacking optical adhesives, i.e. the problem of stacking optical adhesives occurs at the thinning boundary of the ultra-thin flexible glass 161 in the bending region 11.
The invention aims at the problems that after the ultrathin flexible glass UTG in the bending area of the foldable display panel in the prior art is thinned, the ultrathin flexible glass UTG in the non-bending area is still in normal thickness, the bending performance is increased due to the thinned UTG in the bending area, the original impact resistance of the non-bending area is reserved, but the light-emitting quality is not uniform and the optical cement is stacked due to the fact that the ultrathin flexible glass UTG is different in thickness between the bending area and the non-bending area when the display panel is flattened, and the defects can be solved.
The embodiment of the invention provides a foldable display panel, which is divided into a bending area and a non-bending area, and comprises a back plate, a display module positioned on the back plate, ultrathin flexible glass positioned on the display module, and a flexible covering window positioned on the ultrathin flexible glass; the corresponding bending area of the ultrathin flexible glass is provided with a flexible structure; the display module comprises pixels arranged in an array, and the flexible structure does not influence the light emitting quality of the pixels; according to the invention, the flexible structure is arranged in the bending area corresponding to the ultrathin flexible glass UTG with the same thickness, the flexible structure can improve the bending performance of the bending area, does not influence the light emitting quality of the foldable display panel, improves the problem of nonuniform bending performance and light emitting quality of the bending area in the prior art, and can also reduce the deformation glue stacking phenomenon generated in the long-time bending process of the optical transparent glue material.
Specifically, as shown in fig. 4, an embodiment of the present invention provides a film layer schematic diagram of a foldable display panel 20, the foldable display panel 20 is divided into a bending region 21 and a non-bending region, the non-bending region 22 and the non-bending region 23 are respectively disposed on two sides of the bending region 21 in this embodiment, the foldable display panel 20 includes a back plate 24, a display module 25 located on the back plate 24, an ultra-thin flexible glass 27 located on a first optical transparent adhesive layer 26 above the display module 25, a second optical transparent adhesive layer 29 located on the ultra-thin flexible glass 27, and a flexible cover window 31 located on the second optical transparent adhesive layer 29; the ultra-thin flexible glass 27 is provided with a flexible structure 28 corresponding to the bending region 21, the flexible structure 28 avoids the pixel light-emitting path, the flexible structure 28 is a blind hole or a through hole, the ultra-thin flexible glass 27 in this embodiment includes a first portion 271 and a second portion 272, and the flexible structure 28 includes a first blind hole 281, a second blind hole 282 and a through hole 283. The material of the back plate 24 is sus stainless steel or copper foil, and the material of the flexible cover window 31 is transparent polyimide.
Fig. 5a to 5h are schematic structural diagrams illustrating the flexible structure 28 of the present invention. Fig. 5a is a schematic cross-sectional view of the ultra-thin flexible glass 27, and fig. 5b is a schematic top view of the ultra-thin flexible glass 27. As shown in fig. 5a and 5b, the flexible structure 28 includes elongated grooves 284 arranged in an array, the elongated grooves 284 are arranged parallel to the bending axis of the bending region, the elongated grooves 284 are between two adjacent columns of pixels, in the specific preparation process, laser modification is performed on the ultra-thin flexible glass 27, acid washes out the patterned elongated grooves 284, and meanwhile, ion exchange is adopted to increase the surface strength of the elongated grooves 284. Fig. 5c is another schematic cross-sectional view of the ultra-thin flexible glass 27, and fig. 5d is another schematic top view of the ultra-thin flexible glass 27. As shown in fig. 5c and 5d, the flexible structure 28 includes elongated grooves 285 arranged in an array, the elongated grooves 285 are arranged perpendicular to the bending axis of the bending region, the elongated grooves 285 are between two adjacent rows of pixels, and the specific manufacturing process is similar to that in fig. 5 b. Fig. 5e is a schematic cross-sectional view of the ultra-thin flexible glass 27, and fig. 5f is a schematic top view of the ultra-thin flexible glass 27. As shown in fig. 5e and 5f, the flexible structure 28 includes elongated grooves 284 and elongated grooves 285 arranged in an array, the elongated grooves 285 are arranged perpendicular to the bending axis of the bending region, the elongated grooves 284 and the elongated grooves 285 intersect with each other, the elongated grooves 284 are between two adjacent columns of pixels, the elongated grooves 285 are between two adjacent rows of pixels, and the specific manufacturing process is similar to that in fig. 5 b.
Fig. 5g is a schematic cross-sectional view of the ultra-thin flexible glass 27, and fig. 5h is a schematic top view of the ultra-thin flexible glass 27. As shown in fig. 5e and 5f, the flexible structure 28 includes a plurality of dot-shaped circular holes 286 arranged in an array, and each dot-shaped circular hole 286 is located between two adjacent pixels.
As shown in fig. 4, the display module 25 in this embodiment is an OLED display module, a light emitting device is disposed in a pixel opening of the OLED display module, and the flexible structure 28 is disposed to avoid the light emitting device, for example, the flexible structure 28 includes a first blind hole 281, a second blind hole 282, and a through hole 283. The OLED display module includes a red light emitting device 251, a green light emitting device 252, a blue light emitting device 253, and a red light emitting device 254, a second blind hole 282 is located between the blue light emitting device 253 and the red light emitting device 254, a first blind hole 281 is located between the red light emitting device 251 and the green light emitting device 252, and a through hole 283 is located between the green light emitting device 252 and the blue light emitting device 253. Since the light intensity S2 of the bending region 21 and the light intensity S1 of the non-bending region 22 penetrate through the ultra-thin flexible glass 27 with the same thickness, the light intensity S2 of the bending region 21 is the same as the light intensity S1 of the non-bending region 22, thereby improving the bending performance and solving the problem of optical nonuniformity.
As shown in fig. 6, an embodiment of the invention provides another schematic diagram of a film structure of a foldable display panel. The display module is a liquid crystal display module, the liquid crystal display module comprises an array substrate 251, a liquid crystal layer 252 and a color film substrate, the color film substrate comprises color resistance layers and a black matrix 255 positioned between the color resistance layers, the black matrix 255 is positioned between the color resistance layers 253 and the color resistance layers 254, and the flexible structure 28 and the black matrix 255 are arranged in an aligned mode. The ultra-thin flexible glass comprises a first portion 271 and a second portion 272, the flexible structure 28 is located between the first portion 271 and the second portion 272, and the flexible structure 28 is a through hole. The flexible structure 28 is located between adjacent pixels, emergent light rays S5, S6, S7 and S8 are small in crosstalk, the problem of nonuniform optics of a folding area and a non-folding area can be effectively solved within a certain range by controlling the size of the opening, meanwhile, the bending performance is improved, the bending performance of the ultrathin flexible glass of the bending area can be improved by designing the pixel-level patterned through holes, meanwhile, the thickness of the non-bending area is thicker, and the impact resistance can be improved.
As shown in fig. 7, another film layer schematic diagram of a foldable display panel 20 is provided in the embodiment of the present invention, the foldable display panel 20 is divided into a bending region 21 and a non-bending region, the non-bending region 22 and the non-bending region 23 are respectively disposed on two sides of the bending region 21 in the embodiment, the foldable display panel 20 includes a back plate 24, a display module 25 disposed on the back plate 24, an ultra-thin flexible glass 27 disposed on a first optical transparent adhesive layer 26 disposed on the display module 25, a second optical transparent adhesive layer 29 disposed on the ultra-thin flexible glass 27, and a flexible cover window 31 disposed on the second optical transparent adhesive layer 29; the ultra-thin flexible glass 27 is provided with a flexible structure 28 corresponding to the bending region 21, the flexible structure 28 avoids the pixel light-emitting path, the flexible structure 28 comprises a hollow structure and a flexible material filled in the hollow structure, the refractive index of the flexible material is the same as that of the ultra-thin flexible glass, the hollow structure is a through hole or a blind hole, a flexible block is formed on the flexible material in the hollow structure, the display module 25 comprises a red light-emitting device 251, a green light-emitting device 252 and a blue light-emitting device 253, the flexible structure 28 covers a part of the light-emitting device, the flexible structure 28 comprises a flexible block 287 and a flexible block 288, the flexible block 288 covers the blue light-emitting device 253, and the flexible block 288 covers the red light-emitting device 251 and the green light-emitting device 252. The refractive index of the flexible blocks 287 and 288 is the same as that of the ultra-thin flexible glass 27, which can reduce the non-uniform light intensity.
In the above, the embodiment of the present invention provides a foldable display panel, where the foldable display panel is divided into a bending area and a non-bending area, and the foldable display panel includes a back plate, a display module located on the back plate, ultra-thin flexible glass located on the display module, and a flexible cover window located on the ultra-thin flexible glass; the flexible structure is arranged in the bending area corresponding to the ultrathin flexible glass and avoids the pixel opening of the display module, or the refractive index of the flexible structure is the same as that of the ultrathin flexible glass; in the invention, the hollow structure (flexible structure) with the pixel-level size is preferably subjected to laser etching on the ultrathin flexible glass UTG with the same thickness corresponding to the pixel gap of the display module, so that the bending performance is improved, the problem of optical inhomogeneity is solved, the contact area of the optical transparent adhesive material is increased by the hollow structure, and the deformation and adhesive accumulation phenomenon generated in the long-time bending process of the optical transparent adhesive material is relieved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A foldable display panel is divided into a bending area and a non-bending area and is characterized by comprising a back plate, a display module positioned on the back plate, ultrathin flexible glass positioned on the display module, and a flexible covering window positioned on the ultrathin flexible glass; the ultrathin flexible glass is provided with a flexible structure corresponding to the bending area;
the display module comprises pixels arranged in an array, and the flexible structure does not influence the light emitting quality of the pixels.
2. The foldable display panel of claim 1, wherein the flexible structure is disposed to avoid the pixel light exit path.
3. The foldable display panel of claim 2, wherein the flexible structures comprise elongated grooves arranged in an array, the elongated grooves being arranged parallel and/or perpendicular to a bending axis of the bending region.
4. The foldable display panel of claim 2, wherein the flexible structure comprises an array of circular dot-shaped holes, each circular dot-shaped hole being located between two adjacent pixels.
5. The foldable display panel according to claim 1, wherein the flexible structure comprises a hollow structure and a flexible material filled in the hollow structure, and the refractive index of the flexible material is the same as that of the ultrathin flexible glass.
6. The foldable display panel of claim 5, wherein the hollow structures are blind holes or through holes.
7. The foldable display panel of claim 1, wherein a first optically clear adhesive layer is disposed between the ultra-thin flexible glass and the display module, and a second optically clear adhesive layer is disposed between the ultra-thin flexible glass and the flexible cover window.
8. The foldable display panel of claim 2, wherein the display module is an OLED display module, a light emitting device is disposed in the pixel opening of the OLED display module, and the flexible structure is disposed away from the light emitting device.
9. The foldable display panel according to claim 2, wherein the display module is a liquid crystal display module, the liquid crystal display module comprises an array substrate, a color film substrate and a liquid crystal layer located between the array substrate and the color film substrate, the color film substrate comprises a color resist layer and a black matrix located between the color resist layers, and the flexible structure is aligned with the black matrix.
10. The foldable display panel of claim 1, wherein the material of the back sheet is sus stainless steel or copper foil, and the material of the flexible overlay window is transparent polyimide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210532997.XA CN114913773B (en) | 2022-05-11 | 2022-05-11 | Foldable display panel |
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| CN202210532997.XA CN114913773B (en) | 2022-05-11 | 2022-05-11 | Foldable display panel |
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| KR20140085956A (en) * | 2012-12-28 | 2014-07-08 | 엘지디스플레이 주식회사 | Flexible display device and method for manufacturing the same |
| US20170062532A1 (en) * | 2015-08-31 | 2017-03-02 | Lg Display Co., Ltd. | Backplane substrate and flexible display using the same |
| US20180175311A1 (en) * | 2016-12-28 | 2018-06-21 | Shanghai Tianma AM-OLED Co., Ltd. | Flexible display panel, fabrication method, and flexible display apparatus |
| CN108878502A (en) * | 2018-07-26 | 2018-11-23 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109830184A (en) * | 2019-02-22 | 2019-05-31 | 京东方科技集团股份有限公司 | A kind of electroluminescence display panel and preparation method thereof, display device |
| CN110518039A (en) * | 2019-08-29 | 2019-11-29 | 武汉天马微电子有限公司 | A kind of flexible display panels and display device |
| CN110649070A (en) * | 2019-09-03 | 2020-01-03 | 武汉华星光电半导体显示技术有限公司 | Flexible substrate, flexible display panel and manufacturing method of flexible substrate |
| CN111724682A (en) * | 2020-06-10 | 2020-09-29 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate, preparation method thereof and display device |
| CN112396963A (en) * | 2020-11-16 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Foldable display module and device |
| CN112349209A (en) * | 2020-12-01 | 2021-02-09 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and preparation method thereof |
| CN112542091A (en) * | 2020-12-02 | 2021-03-23 | 合肥维信诺科技有限公司 | Flexible display panel, manufacturing method thereof and display device |
| CN112861763A (en) * | 2021-02-25 | 2021-05-28 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN114373391A (en) * | 2022-01-11 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
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