CN114783281B - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN114783281B CN114783281B CN202210186765.3A CN202210186765A CN114783281B CN 114783281 B CN114783281 B CN 114783281B CN 202210186765 A CN202210186765 A CN 202210186765A CN 114783281 B CN114783281 B CN 114783281B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 96
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000011159 matrix material Substances 0.000 claims description 14
- 238000006116 polymerization reaction Methods 0.000 claims description 8
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 3
- 229910015900 BF3 Inorganic materials 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 239000012510 hollow fiber Substances 0.000 claims description 3
- 239000003094 microcapsule Substances 0.000 claims description 3
- 239000002120 nanofilm Substances 0.000 claims description 3
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 230000008439 repair process Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 127
- 239000000758 substrate Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 239000002184 metal Substances 0.000 description 10
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- 238000010586 diagram Methods 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 6
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- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 229910016027 MoTi Inorganic materials 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
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- 230000003287 optical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- -1 fluoride ions Chemical class 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000000206 photolithography Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a manufacturing method thereof. The display panel comprises at least one bending region and a non-bending region adjacent to the bending region; the display panel further includes: a panel body and a cover plate; the apron sets up in one side of panel main part, and the apron includes the body and sets up in body one side and cover the self-repairing layer in bending zone at least, and wherein, self-repairing layer is including setting up in the base member of body one side and distributing a plurality of loading parts in the base member, and is provided with from the repair material in at least part loading part. The invention can improve the yield and the strength of the cover plate, and further can ensure the bending performance and the strength of the cover plate simultaneously when the cover plate is thinned.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
Along with the rapid development of the electronic display industry, the flexible display panel becomes the main attack direction of the future intelligent display panel, and along with the design of bending or curling the flexible display panel, the flexible display panel can realize the display function of double screens or multiple screens, can save larger space, is more convenient to carry and meets the requirements of users.
However, in the process of folding or curling the flexible display panel, on one hand, the cover plate is required to have enough flexibility, so that folding or curling in any direction can be achieved, crease marks cannot be generated after the flexible display panel is folded for a long time, and therefore, the flexible display panel is ensured to have a good display effect; on the other hand, the cover plate is required to have sufficient strength to withstand external impact or friction to protect the panel.
At present, ultra-thin glass (UTG) is often adopted as a cover plate of a flexible display panel, and the thickness of the cover plate is made to be very thin so as to improve the bending performance of the cover plate, but the cover plate is not strong enough due to the fact that the thickness is too thin, the cover plate is easy to crack, and the cover plate is made of glass material, so that the cover plate is easy to cause injury to a user after the cover plate is cracked.
Disclosure of Invention
The embodiment of the invention provides a display panel and a manufacturing method thereof, which can self-repair the damaged part of a cover plate, ensure the bending performance and strength of the cover plate and improve the yield of the cover plate.
The embodiment of the invention provides a display panel, which comprises at least one bending region and a non-bending region adjacent to the bending region;
the display panel further includes:
a panel main body;
the cover plate is arranged on one side of the panel main body and comprises a body and a self-repairing layer which is arranged on one side of the body and at least covers the bending area, wherein the self-repairing layer comprises a matrix arranged on one side of the body and a plurality of loading parts distributed in the matrix, and at least part of the loading parts are internally provided with self-repairing materials.
In an embodiment of the present invention, a groove located in the bending region is disposed on a side of the body, which is close to the self-repairing layer, and the self-repairing layer is at least filled in the groove.
In one embodiment of the present invention, the self-repairing layer further covers the non-bending region, and the self-repairing layer includes a first sub-portion located in the bending region and a second sub-portion located in the non-bending region, and a thickness of the first sub-portion is greater than or equal to a thickness of the second sub-portion.
In one embodiment of the invention, the thickness of the first sub-portion decreases gradually in a direction away from the centre of the bending zone.
In one embodiment of the present invention, the self-healing layer further comprises a curing agent, and the curing agent comprises at least one of aliphatic amine, thiol, and boron trifluoride, the loading portion comprises at least one of a microcapsule structure, a hollow fiber structure, a nano-film structure, and a micro-vascular structure, and the self-healing material comprises at least one of dicyclopentadiene and an epoxy.
In one embodiment of the present invention, the curing agent is distributed in the matrix and/or coated in the loading portion, and the curing agent and the self-healing material are located in different loading portions.
In one embodiment of the present invention, the body includes a first slit, the base includes a second slit in corresponding communication with the first slit, and the plurality of loading portions includes first loading portions distributed at the second slit, the first loading portions include openings, and the self-repairing material at least partially corresponding to the first loading portions is filled in the first slit and the second slit in a polymerized manner.
In one embodiment of the invention, the self-healing layer further comprises a hydrophobic material distributed in the matrix.
In one embodiment of the present invention, the self-repairing layer is located at a side of the body close to the panel body or at a side of the body far from the panel body, and a bending radius of the self-repairing layer is greater than a bending radius of the body.
According to the above object of the present invention, there is provided a method for manufacturing a display panel, the display panel including at least one bending region and a non-bending region adjacent to the bending region, the method comprising the steps of:
providing a panel body;
providing a cover plate, wherein the cover plate comprises a body and a self-repairing layer which is formed on one side of the body and at least covers the bending area, the self-repairing layer comprises a matrix formed on one side of the body and a plurality of loading parts distributed in the matrix, and self-repairing materials are formed in at least part of the loading parts;
and attaching the cover plate to one side of the panel body.
The invention has the beneficial effects that: according to the invention, the self-repairing layer is arranged on one side of the cover plate, if the cover plate is bent and broken, the self-repairing material in the self-repairing layer can self-repair the broken part of the cover plate, so that the yield and strength of the cover plate are improved, and further, when the cover plate is thinned, the bending performance and strength of the cover plate can be ensured at the same time.
Drawings
The technical solution and other advantageous effects of the present invention will be made apparent by the following detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 to fig. 4 are schematic structural diagrams of a self-repairing process of a self-repairing material in a cover plate according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel in a bent state according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display panel in a bent state according to an embodiment of the present invention;
FIG. 7 is a flowchart of a method for fabricating a display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a panel body according to an embodiment of the present invention;
fig. 9 to 11 are schematic views of a manufacturing flow structure of a cover plate according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1, the display panel includes at least one bending region 101 and a non-bending region 102 adjacent to the bending region 101.
Further, the display panel further includes a panel body 10 and a cover plate 20; the cover 20 is disposed on one side of the panel body 10, the cover 20 includes a body 21 and a self-repairing layer 22 disposed on one side of the body 21, and the self-repairing layer 22 at least covers the bending region 101.
The self-repairing layer 22 includes a substrate 221 disposed on one side of the body 21 and a plurality of loading portions 222 disposed in the substrate 221, and a self-repairing material 223 is disposed in at least a portion of the loading portions 222.
In the implementation and application process, the flexible cover plate of the flexible display panel is often made to be very thin in the related art, so that the bending performance of the flexible cover plate is improved, but the strength of the flexible cover plate is reduced, and the flexible cover plate is easy to crack. Furthermore, in the embodiment of the invention, the self-repairing layer 22 is additionally arranged in the cover plate 20, and the self-repairing material 223 is arranged in the self-repairing layer 22, so that when the body 21 of the cover plate 20 breaks, the self-repairing material 223 in the self-repairing layer 22 can repair the broken part of the body 21 so as to improve the yield and strength of the cover plate, and further, when the cover plate is thinned, the bending performance and strength of the cover plate can be ensured simultaneously.
Specifically, please refer to fig. 1, wherein fig. 1 is a schematic structural diagram of a display panel in a flat state (i.e. an unbent state) according to an embodiment of the present invention, wherein the display panel includes at least one bending region 101 and an unbent region 102 adjacent to the bending region 101; it can be understood that if the display panel is bent at only one position, one bending region 101 is correspondingly disposed, and if the display panel is bent at a plurality of positions, a plurality of bending regions 101 are correspondingly disposed, and the non-bending region 102 is correspondingly disposed at the non-bending position.
Further, the display panel includes a panel body 10 and a cover plate 20 disposed on one side of the panel body 10, wherein the cover plate 20 is disposed on the light emitting side of the display panel 10 to provide protection for the panel body 10.
In the embodiment of the invention, the cover 20 includes a body 21 and a self-repairing layer 22 disposed on one side of the body 21, the self-repairing layer 22 includes a substrate 221 disposed on one side of the body 21 and a plurality of loading portions 222 distributed in the substrate 221, and at least a portion of the loading portions 222 is provided with a self-repairing material 223.
Referring to fig. 1, 2, 3 and 4, when the cover 20 is broken and cracks are generated during bending, the main body 21 includes a first slit 210 corresponding to the slit, the base 221 includes a second slit 220 corresponding to the first slit 210, the plurality of loading portions 222 includes first loading portions 2221 distributed at the second slit 220, the first loading portions 2221 include openings, and at least part of self-repairing material 223 corresponding to the first loading portions 2221 overflows from the openings and is filled in the first slit 210 and the second slit 220 in a polymerization manner, so as to repair the slit and improve yield and strength of the cover 20.
When the cover plate 20 is broken and a crack is generated during bending, the first loading portion 2221 located at the crack is broken due to the extension of the crack, and then an opening is formed in the first loading portion 2221, and the self-repairing material 223 located in the first loading portion 2221 overflows from the opening, and undergoes a polymerization reaction and fills in the crack, so that the crack is repaired.
Further, the self-healing layer 22 also includes a curing agent 224, and the curing agent 224 may act as a catalyst to promote the polymerization of the self-healing material 223.
Optionally, the curing agent 224 is disposed in the substrate 221 and is located outside the loading portion 222, so that when the cover 20 generates a crack, the self-repairing material 223 meets the curing agent 224 when overflows from the first loading portion 2221, and then the self-repairing material 223 undergoes a polymerization reaction under the action of the curing agent 224 to form a polymer with good mechanical properties and adhesion capability, so as to improve the yield and bending capability of the cover 20.
Optionally, the curing agent 224 may be further disposed in a portion of the loading portion 222, at this time, the curing agent 224 and the self-repairing material 223 are located in different loading portions 222, and when the cover 20 generates a crack, the first loading portion 2221 at the crack and the loading portion 222 coated with the curing agent 224 are broken and form an opening due to the extension of the crack, and then the overflowed self-repairing material 223 can undergo polymerization reaction under the action of the curing agent 224 overflowed from the loading portion 222, so as to form a polymer with good mechanical properties and adhesion capability, so as to improve the yield and bending capability of the cover 20.
In the embodiment of the present invention, the curing agent 224 may be distributed in the substrate 221 and disposed in the partial loading portion 222 at the same time.
Alternatively, the curing agent 224 may be a room temperature curing agent, i.e., a curing agent that can polymerize the self-repairing material 223 under room temperature conditions to ensure repairing effect on the cover plate 20, and the curing agent 224 includes at least one of aliphatic amine, thiol, and boron trifluoride, the loading part 222 includes at least one of microcapsule structure, hollow fiber structure, nano-film structure, and micro-vascular structure, the self-repairing material 223 includes at least one of dicyclopentadiene and epoxy resin, and the material of the base 221 may be a transparent material, such as OCA optical paste or ITO material, etc.
Further, in the embodiment of the present invention, the self-repairing layer 22 further includes a hydrophobic material, such as fluoride ions, distributed in the substrate 221, and the hydrophobic material is added into the substrate 221, so that the substrate 221 has a hydrophobic surface, and when the cover 20 generates a crack, the inner wall of the crack is also a hydrophobic surface, which is more beneficial for the self-repairing material 223 to flow in the substrate 221, so as to improve the repairing effect of the self-repairing material 223.
In addition, in the cover 20, the side of the body 21 near the self-repairing layer 22 is provided with a groove 211 in the bending region 101, so that the thickness of the body 21 in the bending region 101 can be further reduced to further improve the bending performance of the cover 20, and the self-repairing layer 22 at least covers the bending region 101 and fills the groove 211.
Further, the self-repairing layer 22 also covers the non-bending region 102, that is, the self-repairing layer 22 may entirely cover the surface of the body 21 on the side with the grooves 211 and fill the grooves 211. The self-repairing layer 22 includes a first sub-portion 2201 located in the bending region 101 and a second sub-portion 2202 located in the non-bending region 102, wherein the thickness of the first sub-portion 2201 is greater than that of the second sub-portion 2202, that is, one side of the first sub-portion 2201, which is close to the body 21, is filled in the groove 211, and one side of the first sub-portion 2201, which is far from the body 21, is flush with one side of the second sub-portion 2202, which is far from the body 21.
In the embodiment of the present invention, the loading portions 222 may be uniformly distributed in the substrate 221, and thus the thickness of the first sub-portion 2201 is greater than that of the second sub-portion 2202, and the number of loading portions 222 located in the bending region 101 is greater than that of loading portions 222 located in the non-bending region 102. Since the cover 20 is more easily broken at the position of the bending region 101 during the bending process of the display panel, in the embodiment of the invention, the number of the loading portions 222 in the bending region 101 is greater than the number of the loading portions 222 in the non-bending region 102, that is, the number of the self-repairing materials 223 in the bending region 101 is greater than the number of the self-repairing materials 223 in the non-bending region 102, the repairing effect of the self-repairing layer 22 on the portion of the cover 20 in the bending region 101 can be improved.
Further, the depth of the groove 211 gradually decreases along the opposite direction away from the center of the bending region 101, that is, the thickness of the first sub-portion 2201 gradually decreases along the direction away from the center of the bending region 101, and the thickness of the first sub-portion 2201 is equal to the thickness of the second sub-portion 2202 at the junction between the bending region 101 and the non-bending region 102, so as to prevent the thickness of the self-repairing layer 22 from abrupt change in the bending region 101 and at the junction between the bending region 101 and the non-bending region 102, and further reduce the bending stress received by the cover plate 20 during the bending process.
Optionally, the first sub-portion 2201 has a minimum thickness of less than 100 microns, the second sub-portion 2202 has a thickness of greater than or equal to 30 microns and less than or equal to 300 microns, and the first sub-portion 2201 has a length in the first direction of greater than or equal to 10 millimeters and less than or equal to 60 millimeters.
In an embodiment of the present invention, please refer to fig. 5, which is a schematic structural diagram of a display panel in a folded state according to an embodiment of the present invention, wherein the display panel is in an outwardly folded state, and a bending radius of the cover 20 is larger than a bending radius of the panel main body 10.
The self-repairing layer 22 is disposed on a side of the body 21 away from the panel body 10, and the groove 211 is also disposed on a side of the body 21 away from the panel body 10, and in this embodiment, the bending radius of the self-repairing layer 22 is greater than the bending radius of the body 21.
In another embodiment of the present invention, please refer to fig. 6, which is another schematic structural diagram of the display panel in a folded state according to an embodiment of the present invention, wherein the display panel is in an inwardly folded state, and the bending radius of the cover 20 is smaller than that of the panel body 10.
The self-repairing layer 22 is disposed on a side of the body 21 close to the panel body 10, and the groove 211 is also disposed on a side of the body 21 close to the panel body 10, and in this embodiment, the bending radius of the self-repairing layer 22 is larger than that of the body 21.
On the above, in the embodiment of the present invention, the self-repairing layer 22 is added in the cover 20, and the self-repairing material 223 is disposed in the self-repairing layer 22, so that when the body 21 of the cover 20 breaks, the self-repairing material 223 in the self-repairing layer 22 can repair the broken portion of the body 21, so as to improve the yield and strength of the cover, and further, when the cover is thinned, the bending performance and strength of the cover can be ensured at the same time.
In addition, an embodiment of the present invention further provides a method for manufacturing the display panel described in the foregoing embodiment, wherein, referring to fig. 1 and fig. 7 to fig. 11, the display panel includes at least one bending region 101 and a non-bending region 102 adjacent to the bending region 101.
S10, providing a panel body 10.
The manufacturing process of the panel body 10 is specifically as follows:
providing a substrate 11, depositing a first metal layer on the substrate 11 by adopting a physical vapor sputtering method, and simultaneously depositing a diffusion barrier layer and an etching barrier layer on the first metal layer by adopting the physical vapor sputtering method, wherein the material of the first metal layer comprises Mo/Cu, the material of the diffusion barrier layer comprises a material with work function similar to Cu such as MoTi, mo or Ta, and the material of the etching barrier layer comprises a metal oxide such as ITO or IGZO.
Patterning the first metal layer, the diffusion barrier layer and the etching barrier layer to form a light shielding layer 121 on the substrate 11, wherein the etchant of the first metal layer and the diffusion barrier layer comprises H 2 O 2 Chemical solution and etchant for etching barrier layerComprises oxalic acid liquid medicine.
A buffer layer 122 is deposited on the substrate 11 by chemical vapor deposition, and the buffer layer 122 covers the light shielding layer 121.
Next, a metal oxide layer is deposited on the buffer layer 122 by physical vapor sputtering, and the material of the metal oxide layer includes ITO or IGZO, and the metal oxide layer is patterned to obtain an active layer 123 on the buffer layer 122 and above the light shielding layer 121.
An insulating layer covering the active layer is formed on the buffer layer 122 by chemical vapor deposition, and patterned to form a gate insulating layer 124 on the active layer, wherein the gate insulating layer 124 covers a portion of the upper surface of the active layer 123 to expose both sides of the active layer 123.
A second metal layer is deposited on the gate insulating layer 124 and patterned to obtain a gate electrode 125 on the gate insulating layer 124.
And plasma treatment is performed on both sides of the active layer 123 to electrically conductive both sides of the active layer 123.
Then, an interlayer dielectric layer 126 is deposited by chemical vapor deposition to cover the buffer layer 122, the active layer 123 and the gate electrode 125, and the interlayer dielectric layer 126 and the buffer layer 122 may be respectively perforated by two photolithography processes to expose both sides of the active layer 123 and a portion of the upper surface of the light shielding layer 121.
A third metal layer is deposited on the interlayer dielectric layer 126 by a physical vapor deposition method, the material of the third metal layer includes at least one of MoTi, cu and MoTi, and the fourth metal layer is patterned to form a source 127 and a drain 128, and the source 127 is overlapped with one side of the active layer 123 through a via hole passing through the interlayer dielectric layer 126, and the drain 128 is overlapped with the other side of the active layer 123 through a via hole passing through the interlayer dielectric layer 126 and overlapped with the light shielding layer 121 through a via hole passing through the interlayer dielectric layer 126 and the buffer layer 122.
A planarization layer 129 is deposited over the interlayer dielectric layer 126 to cover the source 127 and the drain 128 by chemical vapor deposition.
A fourth metal layer is deposited on the planarization layer 129 and patterned to obtain a plurality of anodes 132.
A pixel defining layer 131 is deposited on the planarization layer 129, and a plurality of pixel openings are formed in the pixel defining layer 131, such that the pixel openings correspondingly expose an upper surface of an anode 132.
It should be noted that, while forming the pixel opening, a deep hole 15 may be formed at a position of the panel body 10 corresponding to the bending region 101, and the deep hole 15 may pass through the pixel defining layer 131, the planarization layer 129, the interlayer dielectric layer 126 and the buffer layer 122, so as to improve the bending performance of the panel body 10 in the bending region 101.
A hole layer 133 covering the inflection region 101 and the non-inflection region 102 is formed on the pixel defining layer 131, a light emitting layer 134 located in each pixel opening is formed on the hole layer 133, an electron layer 135 covering the light emitting layer 134, the inflection region 101 and the non-inflection region 102 is formed on the hole layer 133, a cathode layer 136 covering the non-inflection region 102 is formed on the electron layer 135, a first inorganic encapsulation layer 141 covering the inflection region 101 and the non-inflection region 102 is formed on the cathode layer 136, an organic encapsulation layer 142 covering the inflection region 101 and the non-inflection region 102 and filled in the deep hole 15 is formed on the first inorganic encapsulation layer 141, and a second inorganic encapsulation layer 143 covering the inflection region 101 and the non-inflection region 102 is formed on the organic encapsulation layer 142. In addition, the deep hole 15 is filled with the organic encapsulation layer 142 in the embodiment of the invention, so as to further improve the bending performance of the panel main body 10.
S20, providing a cover plate 20, where the cover plate 20 includes a body 21 and a self-repairing layer 22 formed on one side of the body 21 and at least covering the bending region 101, and the self-repairing layer 22 includes a substrate 221 formed on one side of the body 21 and a plurality of loading portions 222 distributed in the substrate 221, and at least a part of the loading portions 222 is formed with a self-repairing material 223.
The body 21 is provided, and the body 21 may be ultra-thin glass, and the body 21 includes a groove 211 formed in the bending region 101.
Alternatively, the thickness of body 21 in non-inflection region 102 is 80 microns, and the maximum thickness of body 21 in inflection region 101 is 80 microns and the minimum thickness is 50 microns.
The body 21 is placed under the spraying apparatus 30, and a plurality of nozzles 31 are disposed on one side of the spraying apparatus 30 near the body 21, wherein the nozzles 31 may be distributed in a plurality of rows, and the interval between each row may be equal.
The nozzle 31 is driven to spray a solution to form the self-repairing layer 22 on the side of the body 21 where the groove 211 is formed, and the self-repairing layer 22 is filled in the groove 211.
Alternatively, the rate of ejection of the solution from the nozzles above the non-inflection region 102 may be 3pl/s to 8pl/s, and the rate of ejection of the solution from the nozzles above the inflection region 101 may be 10pl/s.
And S30, attaching the cover plate 20 to one side of the panel body 10.
The cover plate 20 can be attached to one side of the panel body 10 by using OCA optical cement, and when the display panel needs to be folded inwards, one side of the cover plate 20 provided with the self-repairing layer 22 can be attached to the panel body 10, and when the display panel needs to be folded outwards, one side of the cover plate 20 provided with the body 21 can be attached to the panel body 10.
In addition, the embodiment of the invention also provides a display device, which comprises the display panel described in the embodiment or a display panel manufactured by adopting the manufacturing method of the display panel described in the embodiment.
In summary, in the embodiment of the present invention, the self-repairing layer 22 is added in the cover 20, and the self-repairing material 223 is disposed in the self-repairing layer 22, so that when the body 21 of the cover 20 breaks, the self-repairing material 223 in the self-repairing layer 22 can repair the broken portion of the body 21, so as to improve the yield and strength of the cover, and further, when the cover is thinned, the bending performance and strength of the cover can be ensured.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display panel and the manufacturing method thereof provided by the embodiment of the invention are described in detail, and specific examples are applied to explain the principle and the implementation mode of the invention, and the description of the above embodiment is only used for helping to understand the technical scheme and the core idea of the invention; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A display panel, wherein the display panel comprises at least one bending region and a non-bending region adjacent to the bending region;
the display panel further includes:
a panel main body;
the cover plate is arranged on one side of the panel main body and comprises a body and a self-repairing layer which is arranged on one side of the body and at least covers the bending area, wherein the self-repairing layer comprises a matrix arranged on one side of the body and a plurality of loading parts distributed in the matrix, at least part of the loading parts are internally provided with self-repairing materials, and the self-repairing materials are used for carrying out polymerization reaction and repairing the breaking part of the body;
a groove positioned in the bending region is formed in one side, close to the self-repairing layer, of the body, and the self-repairing layer is at least filled in the groove;
the self-repairing layer also covers the non-bending area;
the body comprises a first slit, the matrix comprises a second slit correspondingly communicated with the first slit, the loading parts comprise first loading parts distributed at the second slit, the first loading parts comprise openings, and at least part of self-repairing materials corresponding to the first loading parts are filled in the first slit and the second slit in a polymerized mode.
2. The display panel of claim 1, wherein the self-healing layer includes a first sub-portion located within the inflection region and a second sub-portion located within the non-inflection region, the first sub-portion having a thickness greater than or equal to a thickness of the second sub-portion.
3. The display panel of claim 2, wherein the thickness of the first sub-portion decreases gradually in a direction away from the center of the bending region.
4. The display panel of claim 1, wherein the self-healing layer further comprises a curing agent, and the curing agent comprises at least one of aliphatic amine, thiol, and boron trifluoride, the loading portion comprises at least one of a microcapsule structure, a hollow fiber structure, a nano-film structure, and a micro-vascular structure, and the self-healing material comprises at least one of dicyclopentadiene and an epoxy.
5. The display panel according to claim 4, wherein the curing agent is distributed in the matrix and/or coated in the loading portion, and the curing agent and the self-repairing material are located in different loading portions.
6. The display panel of claim 1, wherein the self-healing layer further comprises a hydrophobic material distributed in the matrix.
7. The display panel according to claim 1, wherein the self-repairing layer is located at a side of the body close to the panel body or at a side of the body remote from the panel body, and a bending radius of the self-repairing layer is larger than a bending radius of the body.
8. The manufacturing method of the display panel is characterized in that the display panel comprises at least one bending area and a non-bending area adjacent to the bending area, and the manufacturing method of the display panel comprises the following steps:
providing a panel body;
providing a cover plate, wherein the cover plate comprises a body and a self-repairing layer which is formed on one side of the body and at least covers the bending area, the self-repairing layer comprises a matrix formed on one side of the body and a plurality of loading parts distributed in the matrix, and self-repairing materials are formed in at least part of the loading parts and are used for carrying out polymerization reaction and repairing the fracture part of the body;
the self-repairing layer is filled in the groove, and the self-repairing layer is arranged in the bending region;
wherein the self-healing layer also covers the non-inflection region;
the body comprises a first slit, the matrix comprises a second slit correspondingly communicated with the first slit, the loading parts comprise first loading parts distributed at the second slit, the first loading parts comprise openings, and at least part of self-repairing materials corresponding to the first loading parts are filled in the first slit and the second slit in a polymerization way;
and attaching the cover plate to one side of the panel body.
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| CN114783281A (en) | 2022-07-22 |
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