CN114783281A - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN114783281A CN114783281A CN202210186765.3A CN202210186765A CN114783281A CN 114783281 A CN114783281 A CN 114783281A CN 202210186765 A CN202210186765 A CN 202210186765A CN 114783281 A CN114783281 A CN 114783281A
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- 238000005452 bending Methods 0.000 claims abstract description 110
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 12
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000011159 matrix material Substances 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
- 239000003822 epoxy resin Substances 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
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 129
- 238000000034 method Methods 0.000 description 19
- 239000002184 metal Substances 0.000 description 10
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- 230000000694 effects Effects 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000000059 patterning Methods 0.000 description 4
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- 230000008439 repair process Effects 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
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- 238000000151 deposition Methods 0.000 description 3
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- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
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- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 238000005538 encapsulation Methods 0.000 description 1
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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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- 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 area and a non-bending area adjacent to the bending area; the display panel further includes: a panel main body and a cover plate; 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 base body arranged on one side of the body and a plurality of loading parts distributed in the base body, and self-repairing materials are arranged in at least part of the loading parts. 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 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, flexible display panel will become the main direction of attack of following intelligent display panel, along with buckling or the design that curls to flexible display panel, can make flexible display panel realize the display function of double screen or many screens, and can save bigger space, carry more convenient, more accord with user's demand.
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 the flexible display panel can be folded or curled in any direction, and no crease appears after being bent for a long time, thereby ensuring that the flexible display panel has 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 the cover plate of the flexible display panel, and the thickness of the cover plate is very thin, so that the bending performance of the cover plate is improved, but the cover plate is not strong enough due to the fact that the thickness of the cover plate is too thin, the cover plate is easy to break, and the cover plate is made of glass materials, so that the cover plate is easy to hurt a user after being broken.
Disclosure of Invention
The embodiment of the invention provides a display panel and a manufacturing method thereof, which can carry out self-repairing on 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 area and a non-bending area adjacent to the bending area;
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, wherein the self-repairing layer is arranged on one side of the body and at least covers the bending area, the self-repairing layer comprises a base body arranged on one side of the body and a plurality of loading parts distributed in the base body, and self-repairing materials are arranged in at least part of the loading parts.
In an embodiment of the present invention, a groove located in the bending region is disposed on one side of the body close to the self-repairing layer, and the self-repairing layer is at least filled in the groove.
In an embodiment of the 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 an embodiment of the invention, the thickness of the first sub-portion gradually decreases in a direction away from the center of the bending region.
In an embodiment of the present invention, the self-repairing layer further includes a curing agent, and the curing agent includes at least one of an aliphatic amine, a thiol, and boron trifluoride, the loading portion includes at least one of a microcapsule structure, a hollow fiber structure, a nano-film structure, and a microvascular structure, and the self-repairing material includes at least one of dicyclopentadiene and an epoxy resin.
In one embodiment of the present invention, the curing agent is distributed in the matrix and/or coated in the loading part, and the curing agent and the self-repairing material are located in different loading parts.
In one embodiment of the present invention, the body includes a first slit, the base includes a second slit correspondingly communicating 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 at least a portion of the self-repairing material corresponding to the first loading portions is polymerized and filled in the first slit and the second slit.
In one embodiment of the present invention, the self-repairing layer further comprises a hydrophobic material distributed in the matrix.
In one embodiment of the invention, the self-repairing layer is located on one side of the body close to the panel main body or one side of the body far away from the panel main body, and the bending radius of the self-repairing layer is greater than that of the body.
According to the above object of the present invention, 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 for manufacturing the display panel includes the following steps:
providing a panel main 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 base body formed on one side of the body and a plurality of loading parts distributed in the base body, and self-repairing materials are formed in at least part of the loading parts;
the cover plate is attached 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, and if the cover plate is bent and broken, the self-repairing material in the self-repairing layer can carry out self-repairing on the broken part of the cover plate 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 simultaneously ensured.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with 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 another schematic structural diagram of a display panel in a bent state according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a panel body according to an embodiment of the present invention;
fig. 9 to fig. 11 are schematic views of a manufacturing process structure of the cover plate according to an embodiment of the present invention.
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. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, 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 main body 10 and a cover plate 20; the cover plate 20 is disposed on one side of the panel main body 10, the cover plate 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 distributed in the substrate 221, and at least some of the loading portions 222 are provided with a self-repairing material 223.
In the application process, the flexible cover of the flexible display panel is usually made to be thin in the related art to improve the bending performance of the flexible cover, but the strength of the flexible cover is also reduced, so that the flexible cover is easy to break. 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 is broken, 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 the strength of the cover plate, and further, when the cover plate is thinned, the bending performance and the strength of the cover plate can be simultaneously ensured.
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 a non-bending 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 multiple positions, a plurality of bending regions 101 are correspondingly disposed, and the non-bending position corresponds to the non-bending region 102.
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 a protection effect for the panel body 10.
In the embodiment of the present invention, the cover plate 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 base 221 disposed on one side of the body 21 and a plurality of loading portions 222 distributed in the base 221, and a self-repairing material 223 is disposed in at least some of the loading portions 222.
Referring to fig. 1, 2, 3 and 4, when the cover plate 20 is broken and cracks are generated during the bending process, the body 21 includes a first slit 210 corresponding to the crack, the base 221 includes a second slit 220 correspondingly communicated with the first slit 210, and the loading portions 222 include first loading portions 2221 distributed at the second slit 220, the first loading portions 2221 include openings, and at least a portion of the self-repairing material 223 corresponding to the first loading portions 2221 overflows from the openings and is polymerized and filled in the first slit 210 and the second slit 220 to repair the crack, thereby improving the yield and strength of the cover plate 20.
When the cover plate 20 is broken and cracks are generated during the bending process, the first loading part 2221 located at the cracks is broken due to the extension of the cracks, and an opening is formed in the first loading part 2221, and the self-healing material 223 located in the first loading part 2221 overflows from the opening, undergoes a polymerization reaction, is filled in the cracks, and then repairs the cracks.
Further, the self-repairing layer 22 further includes a curing agent 224, and the curing agent 224 may be used as a catalyst to promote the polymerization reaction of the self-repairing material 223.
Optionally, the curing agent 224 is distributed in the base 221 and located outside the loading portion 222, and when the cover plate 20 has a crack, the self-repairing material 223 overflows from the first loading portion 2221 and meets the curing agent 224, and under the action of the curing agent 224, the self-repairing material 223 undergoes a polymerization reaction to form a polymer with good mechanical properties and adhesion capability, so as to improve the yield and the bending capability of the cover plate 20.
Optionally, the curing agent 224 may also be disposed in a portion of the loading portion 222, and at this time, the curing agent 224 and the self-repairing material 223 are located in different loading portions 222, so that when a crack occurs in the cover plate 20, due to extension of the 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, and further, the overflowing self-repairing material 223 may undergo a polymerization reaction under the effect of the curing agent 224 overflowing 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 the bending capability of the cover plate 20.
In the embodiment of the present invention, the curing agent 224 may also be distributed in the base 221 and disposed in the partial loading portion 222.
Alternatively, the curing agent 224 may adopt a room temperature curing agent, that is, a curing agent capable of polymerizing the self-repairing material 223 at room temperature to ensure a 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 portion 222 includes at least one of a microcapsule structure, a hollow fiber structure, a nano-film structure and a microvascular 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 cement or an ITO material.
Further, in the embodiment of the present invention, the self-repairing layer 22 further includes a hydrophobic material distributed in the substrate 221, for example, fluorine ions, and the hydrophobic material is added in the substrate 221, so that the substrate 221 has a hydrophobic surface, and when a crack is generated in the cover plate 20, an 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 plate 20, a groove 211 located in the bending region 101 is provided at a side of the body 21 close to the self-repairing layer 22, the thickness of the body 21 located in the bending region 101 can be further reduced to further improve the bending performance of the cover plate 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 can cover the whole surface of the side of the social group of the groove 211 of the body 21 and is filled in the groove 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, and the thickness of the first sub-portion 2201 is greater than that of the second sub-portion 2202, that is, a side of the first sub-portion 2201 close to the body 21 is filled in the groove 211, and a side of the first sub-portion 2201 away from the body 21 is flush with a side of the second sub-portion 2202 away from the body 21.
In an embodiment of the invention, the loading portions 222 may be uniformly distributed in the substrate 221, and further, the thickness of the first sub-portion 2201 is greater than that of the second sub-portion 2202, so that 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 plate 20 is easily broken at the position of the bending region 101 during the bending process of the display panel, in the embodiment of the present invention, the number of the loading portions 222 located in the bending region 101 is greater than the number of the loading portions 222 located in the non-bending region 102, that is, the self-repairing material 223 located in the bending region 101 is greater than the self-repairing material 223 located in the non-bending region 102, so that the repairing effect of the self-repairing layer 22 on the portion of the cover plate 20 located in the bending region 101 can be improved.
Further, the depth of the groove 211 gradually decreases in a direction away from the center of the bending region 101, that is, the thickness of the first sub-portion 2201 gradually decreases in a 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 boundary between the bending region 101 and the non-bending region 102, so as to prevent the thickness of the self-repairing layer 22 from suddenly changing in the bending region 101 and at the boundary between the bending region 101 and the non-bending region 102, and further, the bending stress received by the cover plate 20 during the bending process can be reduced.
Optionally, the minimum thickness of the first sub-portion 2201 is less than 100 micrometers, the thickness of the second sub-portion 2202 is greater than or equal to 30 micrometers and less than or equal to 300 micrometers, and the length of the first sub-portion 2201 along the first direction is 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 bent state according to an embodiment of the present invention, wherein the display panel is in a folded state, and a bending radius of the cover plate 20 is greater than a bending radius of the panel main body 10.
The self-repairing layer 22 is arranged on one side of the body 21 far away from the panel main body 10, and the groove 211 is also arranged on one side of the body 21 far away from the panel main body 10, in this embodiment, the bending radius of the self-repairing layer 22 is greater than that of the body 21.
In another embodiment of the present invention, please refer to fig. 6, which is another structural schematic diagram of the display panel in a bent state according to the embodiment of the present invention, wherein the display panel is in a folded state, and a bending radius of the cover plate 20 is smaller than a bending radius of the panel main body 10.
The self-repairing layer 22 is arranged on one side of the body 21 close to the panel main body 10, and the groove 211 is also arranged on one side of the body 21 close to the panel main body 10, in the embodiment, the bending radius of the self-repairing layer 22 is larger than that of the body 21.
In summary, in the embodiment of the present 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 is broken, 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 at the same time.
In addition, an embodiment of the present invention further provides a method for manufacturing a display panel in the above embodiment, wherein, with reference to fig. 1, 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 the panel body 10.
The manufacturing process of the panel body 10 is as follows:
providing a substrate 11, depositing a first metal layer on the substrate 11 by using a physical vapor sputtering method, and depositing a diffusion barrier layer and an etching barrier layer on the first metal layer by using the physical vapor sputtering method, wherein optionally, the material of the first metal layer includes Mo/Cu, the material of the diffusion barrier layer includes a material having a work function similar to that of Cu, such as MoTi, Mo, or Ta, and the material of the etching barrier layer includes a metal oxide, such as ITO or IGZO.
Patterning the first metal layer, the diffusion barrier layer and the etch barrier layer to form a light-shielding layer 121 on the substrate 11, wherein an etchant for the first metal layer and the diffusion barrier layer includes H2O2Is a chemical solution, and the etchant for etching the barrier layer includes an oxalic acid-based chemical solution.
The buffer layer 122 is deposited on the substrate 11 by using a chemical vapor deposition method, and the buffer layer 122 covers the light-shielding layer 121.
Next, a metal oxide layer is deposited on the buffer layer 122 by using a physical vapor deposition method, and the material of the metal oxide layer includes a metal oxide material such as ITO or IGZO, and patterning is performed on the metal oxide layer 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 a chemical vapor deposition method, and patterning is performed to form a gate insulating layer 124 on the active layer, and the gate insulating layer 124 covers a portion of the upper surface of the active layer 123 to expose two sides of the active layer 123.
A second metal layer is deposited on the gate insulating layer 124, and is patterned to obtain a gate 125 on the gate insulating layer 124.
And both sides of the active layer 123 are plasma-treated to make both sides of the active layer 123 conductive.
Then, the interlayer dielectric layer 126 is deposited by a chemical vapor deposition method to cover the buffer layer 122, the active layer 123 and the gate 125, and the interlayer dielectric layer 126 and the buffer layer 122 may be respectively hollowed by two photolithography processes to expose two sides of the active layer 123 and a portion of the upper surface of the light-shielding layer 121.
Depositing a third metal layer on the interlayer dielectric layer 126 by using a physical vapor deposition method, wherein the third metal layer is made of at least one of MoTi, Cu and MoTi, patterning the fourth metal layer to form a source 127 and a drain 128, the source 127 is lapped with one side of the active layer 123 through a via hole penetrating through the interlayer dielectric layer 126, the drain 128 is lapped with the other side of the active layer 123 through a via hole penetrating through the interlayer dielectric layer 126, and is lapped with the light shielding layer 121 through a via hole penetrating through the interlayer dielectric layer 126 and the buffer layer 122.
A planarization layer 129 is deposited on the interlayer dielectric layer 126 by chemical vapor deposition to cover the source electrode 127 and the drain electrode 128.
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 main 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 main body 10 in the bending region 101.
A hole layer 133 covering the bending region 101 and the non-bending region 102 is formed on the pixel defining layer 131, a light emitting layer 134 positioned in each pixel opening is formed on the hole layer 133, an electron layer 135 covering the light emitting layer 134, the bending region 101, and the non-bending region 102 is formed on the hole layer 133, a cathode layer 136 covering the non-bending region 102 is formed on the electron layer 135, a first inorganic encapsulating layer 141 covering the bending region 101 and the non-bending region 102 is formed on the cathode layer 136, an organic encapsulating layer 142 covering the bending region 101 and the non-bending region 102 and filling the deep hole 15 is formed on the first inorganic encapsulating layer 141, and a second inorganic encapsulating layer 143 covering the bending region 101 and the non-bending region 102 is formed on the organic encapsulating layer 142. In addition, in the embodiment of the present invention, the deep hole 15 is filled with the organic encapsulation layer 142, so as to further improve the bending performance of the panel body 10.
S20, providing a cover plate 20, wherein 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, wherein the self-repairing layer 22 includes a base 221 formed on one side of the body 21 and a plurality of loading portions 222 distributed in the base 221, and a self-repairing material 223 is formed in at least a portion of the loading portions 222.
A 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.
Optionally, the thickness of the body 21 in the non-bending region 102 is 80 micrometers, the maximum thickness of the body 21 in the bending region 101 is 80 micrometers, and the minimum thickness is 50 micrometers.
The body 21 is placed under the spraying device 30, and one side of the spraying device 30 close to the body 21 is provided with a plurality of nozzles 31, wherein the nozzles 31 may be distributed in a plurality of rows, and the intervals between each row may be equal.
The nozzle 31 is driven to spray the solution to form the self-repairing layer 22 on the side of the body 21 provided with the groove 211, and the self-repairing layer 22 is filled in the groove 211.
Alternatively, the solution can be ejected at a rate of 3pl/s to 8pl/s from the nozzles above the non-bending region 102, and at a rate of 10pl/s from the nozzles above the bending region 101.
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 main body 10 by using OCA optical cement, and when the display panel needs to be folded inwards, one side of the cover plate 20, which is provided with the self-repair layer 22, can be attached to the panel main body 10, and when the display panel needs to be folded outwards, one side of the cover plate 20, which is provided with the body 21, can be attached to the panel main body 10.
In addition, an embodiment of the present invention further provides a display device, where the display device includes the display panel described in the above embodiment, or a display panel manufactured by using the manufacturing method of the display panel described in the above embodiment.
In summary, in the embodiment of the present invention, the self-repairing layer 22 is additionally disposed in the cover plate 20, and the self-repairing material 223 is disposed in the self-repairing layer 22, so that when the body 21 of the cover plate 20 is cracked, the cracked part of the body 21 can be repaired by the self-repairing material 223 in the self-repairing layer 22, 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 at the same time.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, 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, a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A 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;
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, the self-repairing layer is arranged on one side of the body and at least covers the bending area, the self-repairing layer comprises a base body arranged on one side of the body and a plurality of loading parts distributed in the base body, and self-repairing materials are arranged in at least part of the loading parts.
2. The display panel according to claim 1, wherein a groove located in the bending region is formed in one side of the body close to the self-repairing layer, and the self-repairing layer is at least filled in the groove.
3. The display panel according to claim 2, wherein the self-repairing layer further covers the non-bending region, and the self-repairing layer comprises 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.
4. The display panel according to claim 3, wherein the first sub-portion has a thickness gradually decreasing in a direction away from a center of the bending region.
5. The display panel according to claim 1, wherein the self-repairing layer further comprises a curing agent, and the curing agent comprises at least one of an aliphatic amine, a thiol, and boron trifluoride, wherein the loading portion comprises at least one of a microcapsule structure, a hollow fiber structure, a nano-film structure, and a microvascular structure, and wherein the self-repairing material comprises at least one of dicyclopentadiene and an epoxy resin.
6. The display panel of claim 5 wherein the curing agent is distributed in the matrix and/or coated in the loading part, and the curing agent and the self-repairing material are located in different loading parts.
7. The display panel of claim 1, wherein the body comprises a first slit, the substrate comprises a second slit correspondingly communicating with the first slit, and the plurality of loading parts comprises first loading parts distributed at the second slit, the first loading parts comprise openings, and at least a portion of the self-repairing material corresponding to the first loading parts is polymerized and filled in the first slit and the second slit.
8. The display panel of claim 1, wherein the self-repairing layer further comprises a hydrophobic material distributed in the matrix.
9. The display panel according to claim 1, wherein the self-repair layer is located on one side of the body close to the panel main body or on one side of the body far away from the panel main body, and a bending radius of the self-repair layer is larger than that of the body.
10. A manufacturing method of a 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 main 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 base body formed on one side of the body and a plurality of loading parts distributed in the base body, and self-repairing materials are formed in at least part of the loading parts;
attaching the cover plate to one side of the panel body.
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| CN114783281B (en) | 2024-01-02 |
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