CN113366648A - Display panel, electronic equipment and preparation method of display panel - Google Patents
Display panel, electronic equipment and preparation method of display panel Download PDFInfo
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- CN113366648A CN113366648A CN201980090087.7A CN201980090087A CN113366648A CN 113366648 A CN113366648 A CN 113366648A CN 201980090087 A CN201980090087 A CN 201980090087A CN 113366648 A CN113366648 A CN 113366648A
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- 230000017525 heat dissipation Effects 0.000 claims description 107
- 238000004519 manufacturing process Methods 0.000 claims description 41
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 26
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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Abstract
The embodiment of the invention provides a display panel (10), electronic equipment (1) and a preparation method of the display panel. The display panel (10) comprises a flexible display functional layer (100) and an elastic functional layer (200) arranged on one side of the flexible display functional layer (100), wherein the elastic functional layer (200) at least has preset elastic parameters so that the flexible display functional layer (100) can be restored to preset flatness after being bent. Through setting up elasticity functional layer (200), can adjust the roughness of flexible display functional layer (100), help display panel (10) comparatively smooth demonstration, guarantee display effect, and can form the protection to the device in display panel (10).
Description
The invention relates to the technical field of electronics, in particular to a display panel, electronic equipment and a preparation method of the display panel.
With the increasing development of electronic device technology, users have increasingly high demands for electronic devices having large sizes and easy to carry, and therefore electronic devices having foldable display screens are receiving wide attention. Folding electronic equipment's flexible screen adopts organic polymer film material to make usually, and this type of material receives the exogenic action and can produce and buckle, but deformation can not resume the state before the atress rapidly after cancelling external force, leads to the flexible screen to produce the fold easily, influences the display effect of flexible screen on the one hand, and on the other hand leads to the device in the flexible screen to damage easily.
Disclosure of Invention
The embodiment of the invention provides a display panel. The display panel comprises a flexible display functional layer and an elastic functional layer arranged on one side of the flexible display functional layer, and the elastic functional layer at least has preset elastic parameters so that the flexible display functional layer can recover to preset flatness after being bent.
The display panel provided by the embodiment of the invention comprises a flexible display functional layer and an elastic functional layer positioned on one side of the flexible display functional layer, wherein the elastic functional layer has preset elastic parameters, and the preset elastic parameters can enable the flexible display functional layer to be restored to the preset flatness after being bent. Through setting up the elasticity functional layer, can adjust the roughness of flexible display functional layer, help display panel comparatively smooth demonstration, guarantee display effect, and can form the protection to the device in the display panel.
The embodiment of the invention also provides the electronic equipment. The electronic device comprises the display panel according to any of the above embodiments.
The embodiment of the invention also provides a preparation method of the display panel. The preparation method of the display panel comprises the following steps:
providing a flexible display functional layer;
and forming an elastic functional layer on one side of the flexible display functional layer, wherein the elastic functional layer at least has preset elastic parameters so that the flexible display functional layer can recover to a preset flatness after being bent.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first display panel provided in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a second display panel provided in the embodiment of the present application.
Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a third display panel provided in the embodiment of the present application.
Fig. 5 is a schematic structural diagram of another display panel provided in the embodiment of the present application.
Fig. 6 is a schematic structural diagram of a fourth display panel provided in the embodiment of the present application.
Fig. 7 is a schematic structural diagram of a fifth display panel provided in the embodiment of the present application.
Fig. 8 is a schematic structural diagram of another display panel provided in the embodiment of the present application.
Fig. 9 is a schematic structural diagram of a sixth display panel provided in the embodiment of the present application.
Fig. 10 is a schematic structural diagram of another display panel provided in the embodiment of the present application.
Fig. 11 is a schematic structural diagram of a seventh display panel according to an embodiment of the present application.
Fig. 12 is a schematic structural diagram of a first electronic device according to an embodiment of the present application.
Fig. 13 is a flowchart of a first method for manufacturing a display panel according to an embodiment of the present disclosure.
Fig. 14 is a schematic structural diagram corresponding to S100 in fig. 13.
Fig. 15 is a schematic structural diagram corresponding to S200 in fig. 13.
Fig. 16 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 17 is a schematic structural diagram corresponding to S210 in fig. 13.
Fig. 18 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 19 is a schematic structural diagram corresponding to S220 in fig. 18.
Fig. 20 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 21 is a schematic diagram of a structure corresponding to S221 in fig. 20.
Fig. 22 is another schematic structural diagram corresponding to S221 in fig. 20.
Fig. 23 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 24 is a schematic structural diagram corresponding to S222 in fig. 23.
Fig. 25 is another schematic structural diagram corresponding to S222 in fig. 23.
Fig. 26 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 27 is a schematic diagram of a structure corresponding to S223 in fig. 26.
Fig. 28 is a schematic structural diagram corresponding to S224 in fig. 26.
Fig. 29 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 30 is a schematic diagram of a structure corresponding to S225 in fig. 29.
Fig. 31 is a schematic diagram of a structure corresponding to S226 in fig. 29.
Fig. 32 is another schematic structural diagram corresponding to S225 in fig. 29.
Fig. 33 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 34 is a schematic diagram of a structure corresponding to S227 in fig. 33.
Fig. 35 is another schematic diagram corresponding to S227 in fig. 33.
Fig. 36 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 37 is a schematic diagram of a structure corresponding to S110 in fig. 36.
Fig. 38 is a partial flowchart of a method for manufacturing a display panel according to an embodiment of the present application.
Fig. 39 is a schematic diagram of a structure corresponding to S228 in fig. 38.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first display panel 10 according to an embodiment of the present disclosure. In this embodiment, the display panel 10 includes a flexible display functional layer 100 and an elastic functional layer 200 disposed on one side of the flexible display functional layer 100, where the elastic functional layer 200 at least has a preset elastic parameter so that the flexible display functional layer 100 can recover to a preset flatness after being bent.
The display panel 10 is a flexible display panel. The flexible display functional layer 100 is used to display images and text information.
Wherein the elastic functional layer 200 comprises one of an ultra-thin glass layer 210 or a liquid metal layer 220. The elastic functional layer 200 has preset elastic parameters, and the preset elastic parameters are used for enabling the flexible display functional layer 100 to be capable of recovering to a preset flatness after being bent under the action of an external force. The flatness of the flexible display functional layer 100 can be adjusted through the elastic functional layer 200 to achieve a preset flatness, so that the display effect can be improved.
When the elastic functional layer 200 is an ultra-thin glass layer 210, the thickness of the ultra-thin glass layer 210 is 10 μm to 100 μm, the hardness of the surface of the ultra-thin glass layer 210 is 3H to 9H, the bending radius of the ultra-thin glass layer 210 is R3 to R6, the preset elastic parameter is the Young modulus of the ultra-thin glass layer 210, and the Young modulus of the ultra-thin glass layer 210 is 10 GPa to 100 GPa.
When the elastic functional layer 200 is a liquid metal layer 220, the liquid metal layer 220 has the predetermined elastic parameters, and the liquid metal layer 220 has an electromagnetic shielding effect and a heat dissipation effect. The preset elastic parameters include the tensile strength of the liquid metal layer 220 and the young's modulus of the liquid metal layer 220, the tensile strength of the liquid metal layer 220 is 1500-2000MPa, and the young's modulus of the liquid metal layer 220 is 90-120 GPa. The liquid metal layer 220 is an amorphous metal and has the characteristics of high strength and good toughness, and the material of the liquid metal layer 220 includes but is not limited to Ni-based, Pt-based, Pd-based, Zr-based, Fe-based, Mg-based, rare earth-based, and the like.
The display panel 10 provided by the embodiment of the present invention includes a flexible display functional layer 100 and an elastic functional layer 200 located on one side of the flexible display functional layer 100, where the elastic functional layer 200 has a preset elastic parameter, and the preset elastic parameter can make the flexible display functional layer 100 recover to a preset flatness after being bent. Through setting up elasticity functional layer 200, can adjust the roughness of flexible display functional layer 100, help display panel 10 comparatively smooth demonstration, guarantee display effect, and can form the protection to the device in the display panel 10.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a second display panel 10 according to an embodiment of the present disclosure. The structural schematic diagram of the second display panel 10 is substantially the same as that of the first display panel 10, except that in this embodiment, when the elastic functional layer 200 includes the ultra-thin glass layer 210, the display panel 10 further includes a heat dissipation layer 300, the ultra-thin glass layer 210 is disposed on one side of the flexible display functional layer 100, the heat dissipation layer 300 is disposed on one side of the ultra-thin glass layer 210 away from the flexible display functional layer 100, and the heat dissipation layer 300 has a heat dissipation function.
The material of the heat dissipation layer 300 includes, but is not limited to, graphene, Ag, Cu, Al, nickel, silicon carbide, and the like. The heat dissipation layer 300 has good optical characteristics and is made of a transparent material.
In one embodiment, the heat dissipation layer 300 is located on the surface of the ultra-thin glass layer 210. Specifically, the heat dissipation layer 300 can be directly manufactured on the surface of the ultrathin glass layer 210 through a coating mode, the manufacturing process is simple, the heat dissipation layer 300 can be manufactured on the surface of the ultrathin glass layer 210 without other complex fixing structures, the thickness of the display panel 10 is reduced, a good heat dissipation effect can be achieved on the flexible display functional layer 100, and the defect that poor display is caused due to the fact that the temperature of the flexible display functional layer 100 is too high is avoided.
In another embodiment, the heat dissipation layer 300 may be coated on the entire surface of the ultra-thin glass layer 210, and the heat dissipation layer 300 maintains a uniform thickness, which helps to uniformly dissipate heat from the flexible display function layer 100, and enables the display panel 10 to maintain a uniform thickness, thereby facilitating the installation and use of the display panel 10.
Still referring to fig. 3, in another embodiment, the heat dissipation layer 300 may be coated on a local surface of the ultra-thin glass layer 210, the heat dissipation layer 300 includes a plurality of sub heat dissipation layers 310 arranged at intervals, a first buffer layer 350 is disposed between two adjacent sub heat dissipation layers 310, the first buffer layer 350 may generate a certain elastic deformation, the first buffer layer 350 is used for buffering and protecting the ultra-thin glass layer 210 and the flexible functional display layer, and on the other hand, the first buffer layer 350 and the ultra-thin glass layer 210 are matched with each other, so that the flexible functional display layer 100 is restored to a predetermined flatness after being bent. The first buffer layer 350 may be Polydimethylsiloxane (PDMS).
Referring to fig. 4, fig. 4 is a schematic structural diagram of a third display panel 10 according to an embodiment of the present disclosure. The structural schematic diagram of the third display panel 10 is substantially the same as that of the first display panel 10, except that in this embodiment, when the elastic functional layer 200 includes the ultra-thin glass layer 210, the display panel 10 further includes an electromagnetic shielding layer 400, the ultra-thin glass layer 210 is disposed on one side of the flexible display functional layer 100, the electromagnetic shielding layer 400 is disposed on one side of the ultra-thin glass layer 210 away from the flexible display functional layer 100, and the electromagnetic shielding layer 400 has an electromagnetic shielding effect.
The electromagnetic shielding layer 400 is made of materials including, but not limited to, Ag, Cu, Al, nickel, carbon black, carbonyl iron, graphene, and the like. The electromagnetic shielding layer 400 has good optical characteristics and is made of a transparent material.
In one embodiment, the electromagnetic shielding layer 400 is located on the surface of the ultra-thin glass layer 210. Specifically, the electromagnetic shielding layer 400 can be directly manufactured on the surface of the ultrathin glass layer 210 in a coating mode, the manufacturing process is simple, other complex fixing structures are not needed to be arranged, the electromagnetic shielding layer 400 can be manufactured on the surface of the ultrathin glass layer 210, the thickness of the display panel 10 is reduced, a good electromagnetic shielding effect can be achieved on the flexible display functional layer 100, and the defect that the flexible display functional layer 100 is poor in display due to electromagnetic interference is avoided.
In another embodiment, the electromagnetic shielding layer 400 may be coated on the entire surface of the ultra-thin glass layer 210, and the electromagnetic shielding layer 400 maintains a uniform thickness, which helps to form an electromagnetic shield on the flexible display function layer 100, and enables the display panel 10 to maintain a uniform thickness, thereby facilitating the installation and use of the display panel 10.
Still referring to fig. 5, in another embodiment, the electromagnetic shielding layer 400 may be coated on a local surface of the ultra-thin glass layer 210, the electromagnetic shielding layer 400 includes a plurality of sub-shielding layers 410 arranged at intervals, a second buffer layer 450 is disposed between two adjacent sub-shielding layers 410, the second buffer layer 450 can generate a certain elastic deformation, the second buffer layer 450 is used for buffering and protecting the ultra-thin glass layer 210 and the flexible functional display layer, and on the other hand, the second buffer layer 450 and the ultra-thin glass layer 210 are matched with each other, so that the flexible functional display layer 100 is restored to a preset flatness after being bent. The second buffer layer 450 may be Polydimethylsiloxane (PDMS).
Referring to fig. 6, fig. 6 is a schematic structural diagram of a fourth display panel 10 according to an embodiment of the present disclosure. The schematic structural diagram of the fourth display panel 10 is substantially the same as the schematic structural diagram of the first display panel 10, except that in this embodiment, the display panel 10 further includes an electromagnetic shielding layer 400 and a heat dissipation layer 300, the electromagnetic shielding layer 400 is disposed on the side of the ultra-thin glass layer 210 away from the flexible display function layer 100, and the heat dissipation layer 300 is disposed on the side of the electromagnetic shielding layer 400 away from the ultra-thin glass layer 210; the electromagnetic shielding layer 400 has an electromagnetic shielding function, and the heat dissipation layer 300 has a heat dissipation function.
The electromagnetic shielding layer 400 and the heat dissipation layer 300 are two independent layer structures. The electromagnetic shielding layer 400 is located on one side, away from the flexible display functional layer 100, of the ultrathin glass layer 210, the heat dissipation layer 300 is located on one side, away from the ultrathin glass layer 210, of the electromagnetic shielding layer 400, the electromagnetic shielding layer 400 is used for forming electromagnetic shielding on the flexible display functional layer 100, and the heat dissipation layer 300 is used for forming a heat dissipation effect on the flexible display functional layer 100, the ultrathin glass layer 210 and the electromagnetic shielding layer 400.
Further, the electromagnetic shielding layer 400 can be formed on the surface of the ultra-thin glass layer 210 through a direct coating method, the heat dissipation layer 300 can be formed on the surface of the electromagnetic shielding layer 400 through a direct coating method, the manufacturing process is simple, the electromagnetic shielding layer 400 can be manufactured on the surface of the ultra-thin glass layer 210 without setting other complex fixing structures, the heat dissipation layer 300 is manufactured on the surface of the electromagnetic shielding layer 400, the reduction of the thickness of the display panel 10 is facilitated, a good electromagnetic shielding effect and a good heat dissipation effect can be achieved on the flexible display functional layer 100, and the defect that the flexible display functional layer 100 is poor in display due to electromagnetic interference and overhigh temperature is avoided.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a fifth display panel 10 according to an embodiment of the present disclosure. The structural schematic diagram of the fifth display panel 10 is substantially the same as the structural schematic diagram of the first display panel 10, except that in this embodiment, the display panel 10 further includes an electromagnetic shielding medium 510 and a heat dissipation medium 520 dispersed in the electromagnetic shielding medium 510, where the electromagnetic shielding medium 510 has an electromagnetic shielding function, and the heat dissipation medium 520 has a heat dissipation function.
Wherein the electromagnetic shielding medium 510 and the heat dissipation medium 520 form a same layer structure. The heat dissipation medium 520 is distributed inside the electromagnetic shielding medium 510.
In one embodiment, the heat dissipation medium 520 is composed of a plurality of heat dissipation particles 550, the plurality of heat dissipation particles 550 are uniformly distributed in the heat dissipation medium 520, and the heat dissipation particles 550 can be disposed inside the electromagnetic shielding medium 510 by injection or stamping.
Still referring to fig. 8, in another embodiment, the flexible display functional layer 100 has a display area 110 and a non-display area 120 surrounding the display area 110, the heat dissipation medium 520 is composed of a plurality of heat dissipation particles 550, the display area 110 corresponds to the first area 111 of the electromagnetic shielding medium 510 in the stacking direction, the non-display area 120 corresponds to the second area 121 of the electromagnetic shielding medium 510 in the stacking direction, the density of the heat dissipation particles 550 in the first area 111 is a first density, the density of the heat dissipation particles 550 in the second area 121 is a second density, and the first density is greater than the second density.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a sixth display panel 10 according to an embodiment of the present disclosure. The structural schematic diagram of the sixth display panel 10 is substantially the same as that of the first display panel 10, except that in this embodiment, the display panel 10 further includes an adhesive layer 600, the adhesive layer 600 is disposed on one side of the flexible display functional layer 100, and the elastic functional layer 200 is disposed on a surface of the adhesive layer 600 away from the flexible display functional layer 100.
The adhesive layer 600 may be an ultra-thin high-resilience double-sided adhesive tape.
In an embodiment, the glue layer 600 is a whole glue layer 600, that is, the glue layer 600 is a whole block, and is used for fixedly connecting the flexible display functional layer 100 with the elastic functional layer 200, so that the flexible display functional layer 100 is tightly attached to the elastic functional layer 200, and therefore the elastic action of the elastic functional layer 200 can be well transmitted to the flexible display functional layer 100, and further the flexible display functional layer 100 is restored to the preset flatness at a high speed.
Referring to fig. 10, in another embodiment, the adhesive layer 600 includes a plurality of colloid units 610 arranged at intervals. Optionally, the colloid units 610 arranged at intervals are arranged in an array. The elastic functional layer 200 is bonded on the flexible display functional layer 100 through the colloid units 610 arranged at intervals, and because no direct contact exists between the adjacent colloid units 610, internal stress generated between the adjacent colloid units 610 can be well eliminated, so that the internal stress between the flexible display functional layer 100 and the elastic functional layer 200 is eliminated, the problem of stress concentration generated between the flexible display functional layer 100 and the elastic functional layer 200 is favorably solved, and the service life of the display panel 10 can be prolonged.
Further, a gap between adjacent colloid units 610 disposed corresponding to the edge portion of the flexible display functional layer 100 is a first gap, a gap between adjacent colloid units 610 disposed corresponding to the middle portion of the flexible display functional layer 100 is a second gap, and the first gap is larger than the second gap. Because when the edge of the flexible display functional layer 100 is attached to the elastic functional layer 200, the problem of stress concentration occurs more easily, therefore, when a first gap between adjacent colloid units 610 corresponding to the edge of the flexible display functional layer 100 is larger than a second gap between adjacent colloid units 610 corresponding to the middle of the flexible display functional layer 100, the problem of stress concentration between the colloid units 610 corresponding to the edge of the flexible display functional layer 100 can be better avoided, and the problem of stress concentration when the edge of the flexible display functional layer 100 is attached to the elastic functional layer 200 is further improved.
Referring to fig. 11, fig. 11 is a schematic structural diagram of a seventh display panel 10 according to an embodiment of the present disclosure. The structure diagram of the display panel 10 of the seventh type is substantially the same as the structure diagram of the display panel 10 of the sixth type, except that in this embodiment, the display panel 10 further includes a support film 700, the support film 700 is disposed on one side of the flexible display functional layer 100, and the glue layer 600 is disposed on a surface of the support film 700 away from the flexible display functional layer 100.
Specifically, the side of the adhesive layer 600 away from the support film 700 is provided with the ultra-thin glass layer 210, the electromagnetic shielding layer 400 and the heat dissipation layer 300. The ultra-thin glass layer 210, the electromagnetic shielding layer 400, and the heat dissipation layer 300 are attached to the lower layer of the support film 700, which can improve the bending property and elastic recovery of the flexible display function layer 100, and help to solve the problem of flatness of the display panel 10.
Referring to fig. 12, fig. 12 is a schematic structural diagram of a first electronic device 1 according to an embodiment of the disclosure. The electronic device 1 comprises a display panel 10 as provided in any of the embodiments above.
The electronic device 1 may be any device having communication and storage functions. For example: the system comprises intelligent equipment with a network function, such as a tablet Computer, a mobile phone, an electronic reader, a remote controller, a Personal Computer (PC), a notebook Computer, vehicle-mounted equipment, a network television, wearable equipment and the like.
The electronic device 1 further includes a middle frame 20 and a battery cover 30, the display panel 10 is fixed to the middle frame 20, and the battery cover 30 covers the middle frame 20.
Referring to fig. 13, fig. 13 is a flowchart illustrating a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. The preparation method of the display panel 10 includes, but is not limited to, S100 and S200, and the following description is provided with respect to S100 and S200.
S100: a flexible display functional layer 100 is provided. Please continue to refer to fig. 14.
The flexible display functional layer 100 is used for displaying images and text information.
S200: an elastic functional layer 200 is formed on one side of the flexible display functional layer 100, wherein the elastic functional layer 200 at least has a preset elastic parameter so that the flexible display functional layer 100 can recover to a preset flatness after being bent. Please continue to refer to fig. 15.
Wherein the elastic functional layer 200 comprises one of an ultra-thin glass layer 210 or a liquid metal layer 220. The elastic functional layer 200 has preset elastic parameters, and the preset elastic parameters are used for enabling the flexible display functional layer 100 to be capable of recovering to a preset flatness after being bent under the action of an external force. The flatness of the flexible display functional layer 100 can be adjusted through the elastic functional layer 200 to achieve a preset flatness, so that the display effect can be improved.
The display panel 10 provided by the embodiment of the present invention includes a flexible display functional layer 100 and an elastic functional layer 200 located on one side of the flexible display functional layer 100, where the elastic functional layer 200 has a preset elastic parameter, and the preset elastic parameter can make the flexible display functional layer 100 recover to a preset flatness after being bent. Through setting up elasticity functional layer 200, can adjust the roughness of flexible display functional layer 100, help display panel 10 comparatively smooth demonstration, guarantee display effect, and can form the protection to the device in the display panel 10.
Referring to fig. 16, fig. 16 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. The step of "S200: the formation of the elastic functional layer 200 "on one side of the flexible display functional layer 100 includes, but is not limited to, S210, which is described below with respect to S210.
S210: a liquid metal layer 220 is formed on one side of the flexible display functional layer 100. Please continue to refer to fig. 17.
When the elastic functional layer 200 is a liquid metal layer 220, the liquid metal layer 220 has the predetermined elastic parameters, and the liquid metal layer 220 has an electromagnetic shielding effect and a heat dissipation effect. The preset elastic parameters include the tensile strength of the liquid metal layer 220 and the young's modulus of the liquid metal layer 220, the tensile strength of the liquid metal layer 220 is 1500-2000MPa, and the young's modulus of the liquid metal layer 220 is 90-120 GPa. The liquid metal layer 220 is an amorphous metal and has the characteristics of high strength and good toughness, and the material of the liquid metal layer 220 includes but is not limited to Ni-based, Pt-based, Pd-based, Zr-based, Fe-based, Mg-based, rare earth-based, and the like.
Referring to fig. 18, fig. 18 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. The step of "S200: the formation of the elastic functional layer 200 "on one side of the flexible display functional layer 100 includes, but is not limited to, S220, which is described below with respect to S220.
S220: an ultra-thin glass layer 210 is formed on one side of the flexible display functional layer 100. Please continue to refer to fig. 19.
When the elastic functional layer 200 is an ultra-thin glass layer 210, the thickness of the ultra-thin glass layer 210 is 10 μm to 100 μm, the hardness of the surface of the ultra-thin glass layer 210 is 3H to 9H, the bending radius of the ultra-thin glass layer 210 is R3 to R6, the preset elastic parameter is the Young modulus of the ultra-thin glass layer 210, and the Young modulus of the ultra-thin glass layer 210 is 10 GPa to 100 GPa.
Referring to fig. 20, fig. 20 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At said "S220: after forming the ultra-thin glass layer 210 ″ on one side of the flexible display functional layer 100, the method for manufacturing the display panel 10 further includes, but is not limited to, S221, which is described below with respect to S221.
S221: a heat dissipation layer 300 is formed on the side of the ultra-thin glass layer 210 away from the flexible display functional layer 100, wherein the heat dissipation layer 300 has a heat dissipation function. Please continue to refer to fig. 21.
The material of the heat dissipation layer 300 includes, but is not limited to, graphene, Ag, Cu, Al, nickel, silicon carbide, and the like. The heat dissipation layer 300 has good optical characteristics and is made of a transparent material.
In one embodiment, the heat dissipation layer 300 is located on the surface of the ultra-thin glass layer 210. Specifically, the heat dissipation layer 300 can be directly manufactured on the surface of the ultrathin glass layer 210 through a coating mode, the manufacturing process is simple, the heat dissipation layer 300 can be manufactured on the surface of the ultrathin glass layer 210 without other complex fixing structures, the thickness of the display panel 10 is reduced, a good heat dissipation effect can be achieved on the flexible display functional layer 100, and the defect that poor display is caused due to the fact that the temperature of the flexible display functional layer 100 is too high is avoided.
In another embodiment, the heat dissipation layer 300 may be coated on the entire surface of the ultra-thin glass layer 210, and the heat dissipation layer 300 maintains a uniform thickness, which helps to uniformly dissipate heat from the flexible display function layer 100, and enables the display panel 10 to maintain a uniform thickness, thereby facilitating the installation and use of the display panel 10.
Still referring to fig. 22, in another embodiment, the heat dissipation layer 300 may be coated on a local surface of the ultra-thin glass layer 210, the heat dissipation layer 300 includes a plurality of sub heat dissipation layers 310 arranged at intervals, a first buffer layer 350 is disposed between two adjacent sub heat dissipation layers 310, the first buffer layer 350 may generate a certain elastic deformation, the first buffer layer 350 is used for buffering and protecting the ultra-thin glass layer 210 and the flexible functional display layer, and on the other hand, the first buffer layer 350 and the ultra-thin glass layer 210 cooperate with each other to enable the flexible functional display layer 100 to recover to a predetermined flatness after being bent. The first buffer layer 350 may be Polydimethylsiloxane (PDMS).
Referring to fig. 23, fig. 23 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At said "S220: after forming the ultra-thin glass layer 210 ″ on one side of the flexible display functional layer 100, the method for manufacturing the display panel 10 further includes, but is not limited to, S222, which is described below with respect to S222.
S222: forming an electromagnetic shielding layer 400 on a side of the ultra-thin glass layer 210 away from the flexible display function layer 100, wherein the electromagnetic shielding layer 400 has an electromagnetic shielding effect. Please continue to refer to fig. 24.
The electromagnetic shielding layer 400 is made of materials including, but not limited to, Ag, Cu, Al, nickel, carbon black, carbonyl iron, graphene, and the like. The electromagnetic shielding layer 400 has good optical characteristics and is made of a transparent material.
In one embodiment, the electromagnetic shielding layer 400 is located on the surface of the ultra-thin glass layer 210. Specifically, the electromagnetic shielding layer 400 can be directly manufactured on the surface of the ultrathin glass layer 210 in a coating mode, the manufacturing process is simple, other complex fixing structures are not needed to be arranged, the electromagnetic shielding layer 400 can be manufactured on the surface of the ultrathin glass layer 210, the thickness of the display panel 10 is reduced, a good electromagnetic shielding effect can be achieved on the flexible display functional layer 100, and the defect that the flexible display functional layer 100 is poor in display due to electromagnetic interference is avoided.
In another embodiment, the electromagnetic shielding layer 400 may be coated on the entire surface of the ultra-thin glass layer 210, and the electromagnetic shielding layer 400 maintains a uniform thickness, which helps to form an electromagnetic shield on the flexible display function layer 100, and enables the display panel 10 to maintain a uniform thickness, thereby facilitating the installation and use of the display panel 10.
Still referring to fig. 25, in another embodiment, the electromagnetic shielding layer 400 may be coated on a local surface of the ultra-thin glass layer 210, the electromagnetic shielding layer 400 includes a plurality of sub-shielding layers 410 arranged at intervals, a second buffer layer 450 is disposed between two adjacent sub-shielding layers 410, the second buffer layer 450 can generate a certain elastic deformation, the second buffer layer 450 is used for buffering and protecting the ultra-thin glass layer 210 and the flexible functional display layer, and on the other hand, the second buffer layer 450 and the ultra-thin glass layer 210 cooperate with each other to enable the flexible functional display layer 100 to recover to a predetermined flatness after being bent. The second buffer layer 450 may be Polydimethylsiloxane (PDMS).
Referring to fig. 26, fig. 26 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At said "S220: after forming the ultra-thin glass layer 210 ″ on one side of the flexible display functional layer 100, the method for manufacturing the display panel 10 further includes, but is not limited to, S223 and S224, which are described below with respect to S223 and S224.
S223: an electromagnetic shielding layer 400 is formed on the side of the ultra-thin glass layer 210 away from the flexible display function layer 100, and the electromagnetic shielding layer 400 has an electromagnetic shielding effect. Please continue to refer to fig. 27.
S224: and forming a heat dissipation layer 300 on the side of the electromagnetic shielding layer 400 far away from the ultrathin glass layer 210, wherein the heat dissipation layer 300 has a heat dissipation function. Please continue to refer to fig. 28.
The electromagnetic shielding layer 400 and the heat dissipation layer 300 are two independent layer structures. The electromagnetic shielding layer 400 is located on one side, away from the flexible display functional layer 100, of the ultrathin glass layer 210, the heat dissipation layer 300 is located on one side, away from the ultrathin glass layer 210, of the electromagnetic shielding layer 400, the electromagnetic shielding layer 400 is used for forming electromagnetic shielding on the flexible display functional layer 100, and the heat dissipation layer 300 is used for forming a heat dissipation effect on the flexible display functional layer 100, the ultrathin glass layer 210 and the electromagnetic shielding layer 400.
Further, the electromagnetic shielding layer 400 can be formed on the surface of the ultra-thin glass layer 210 through a direct coating method, the heat dissipation layer 300 can be formed on the surface of the electromagnetic shielding layer 400 through a direct coating method, the manufacturing process is simple, the electromagnetic shielding layer 400 can be manufactured on the surface of the ultra-thin glass layer 210 without setting other complex fixing structures, the heat dissipation layer 300 is manufactured on the surface of the electromagnetic shielding layer 400, the reduction of the thickness of the display panel 10 is facilitated, a good electromagnetic shielding effect and a good heat dissipation effect can be achieved on the flexible display functional layer 100, and the defect that the flexible display functional layer 100 is poor in display due to electromagnetic interference and overhigh temperature is avoided.
Referring to fig. 29, fig. 29 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At said "S220: after forming the ultra-thin glass layer 210 ″ on one side of the flexible display functional layer 100, the method for manufacturing the display panel 10 further includes, but is not limited to, S225 and S226, which are described below with respect to S225 and S226.
S225: mixing the electromagnetic shielding medium 510 and the heat dissipation medium 520 to obtain a mixed functional medium 530, wherein the electromagnetic shielding medium 510 has an electromagnetic shielding effect, and the heat dissipation medium 520 has a heat dissipation effect. Please continue to refer to fig. 30.
S226: the hybrid functional medium 530 is placed on the surface of the ultra-thin glass layer 210 away from the flexible display functional layer 100 and forms a dual functional layer 540. Please continue to refer to fig. 31.
Wherein the electromagnetic shielding medium 510 and the heat dissipation medium 520 form a same layer structure. The heat dissipation medium 520 is distributed inside the electromagnetic shielding medium 510.
In one embodiment, the heat dissipation medium 520 is composed of a plurality of heat dissipation particles 550, the plurality of heat dissipation particles 550 are uniformly distributed in the heat dissipation medium 520, and the heat dissipation particles 550 can be disposed inside the electromagnetic shielding medium 510 by injection or stamping.
Still referring to fig. 32, in another embodiment, the flexible display functional layer 100 has a display area 110 and a non-display area 120 surrounding the display area 110, the heat dissipation medium 520 is composed of a plurality of heat dissipation particles 550, the display area 110 corresponds to the first area 111 of the electromagnetic shielding medium 510 in the stacking direction, the non-display area 120 corresponds to the second area 121 of the electromagnetic shielding medium 510 in the stacking direction, the density of the heat dissipation particles 550 in the first area 111 is a first density, the density of the heat dissipation particles 550 in the second area 121 is a second density, and the first density is greater than the second density.
Referring to fig. 33, fig. 33 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At said "S220: after forming the ultra-thin glass layer 210 ″ on one side of the flexible display functional layer 100, the method for manufacturing the display panel 10 further includes, but is not limited to, S227, which is described below with respect to S227.
S227: a glue layer 600 is formed on the surface of the ultra-thin glass layer 210 facing the flexible display function layer 100, and the glue layer 600 is used for bonding the ultra-thin glass layer 210 to the flexible display function layer 100. Please continue to refer to fig. 34.
The adhesive layer 600 may be an ultra-thin high-resilience double-sided adhesive tape.
In an embodiment, the glue layer 600 is a whole glue layer 600, that is, the glue layer 600 is a whole block, and is used for fixedly connecting the flexible display functional layer 100 with the ultra-thin glass layer 210, so that the flexible display functional layer 100 is tightly attached to the ultra-thin glass layer 210, and therefore the supporting force of the ultra-thin glass layer 210 can be well transmitted to the flexible display functional layer 100, and the flexible display functional layer 100 is restored to the preset flatness at a high speed.
In another embodiment, the adhesive layer 600 includes a plurality of colloid units 610 arranged at intervals. Optionally, the colloid units 610 arranged at intervals are arranged in an array. The ultra-thin glass layer 210 is bonded on the flexible display function layer 100 through the plurality of colloid units 610 which are arranged at intervals, and because the adjacent colloid units 610 are not in direct contact with each other, internal stress generated between the adjacent colloid units 610 can be well eliminated, so that the internal stress between the flexible display function layer 100 and the ultra-thin glass layer 210 is eliminated, the problem of stress concentration generated between the flexible display function layer 100 and the ultra-thin glass layer 210 is favorably solved, and the service life of the display panel 10 can be prolonged.
Referring to fig. 35, further, a gap between adjacent glue units 610 corresponding to the edge portion of the flexible display functional layer 100 is a first gap, and a gap between adjacent glue units 610 corresponding to the middle portion of the flexible display functional layer 100 is a second gap, where the first gap is larger than the second gap. Because the problem of stress concentration is more likely to occur when the edge portion of the flexible display functional layer 100 is attached to the ultra-thin glass layer 210, when a first gap between adjacent colloid units 610 arranged at the edge portion of the flexible display functional layer 100 is larger than a second gap between adjacent colloid units 610 arranged at the middle portion of the flexible display functional layer 100, the problem of stress concentration between the colloid units 610 arranged at the edge portion of the flexible display functional layer 100 can be better avoided, and the problem of stress concentration when the edge portion of the flexible display functional layer 100 is attached to the ultra-thin glass layer 210 is further improved.
Referring to fig. 36, fig. 36 is a partial flowchart of a method for manufacturing the display panel 10 according to the embodiment of the present disclosure. At the "S100: after providing the flexible display functional layer 100 ″, the method for manufacturing the display panel 10 further includes, but is not limited to, S110, and the following description is provided with respect to S110.
S110: a support film 700 is formed on one side of the flexible display functional layer 100. Please continue to refer to fig. 37.
With continued reference to fig. 38 and 39, the "S200: the formation of the elastic functional layer 200 "on one side of the flexible display functional layer 100 includes, but is not limited to, S228, which is described below with respect to S228.
S228: an elastic functional layer 200 is formed on the side of the support film 700 remote from the flexible display functional layer 100.
Specifically, the side of the adhesive layer 600 away from the support film 700 is provided with the ultra-thin glass layer 210, the electromagnetic shielding layer 400 and the heat dissipation layer 300. The ultra-thin glass layer 210, the electromagnetic shielding layer 400, and the heat dissipation layer 300 are attached to the lower layer of the support film 700, which can improve the bending property and elastic recovery of the flexible display function layer 100, and help to solve the problem of flatness of the display panel 10.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (25)
- The display panel is characterized by comprising a flexible display functional layer and an elastic functional layer arranged on one side of the flexible display functional layer, wherein the elastic functional layer at least has preset elastic parameters so that the flexible display functional layer can recover to preset flatness after being bent.
- The display panel of claim 1, wherein the elastic functional layer comprises one of an ultra-thin glass layer or a liquid metal layer.
- The display panel of claim 2, wherein when the elastic functional layer comprises an ultra-thin glass layer, the display panel further comprises a heat dissipation layer, the ultra-thin glass layer being disposed on a side of the flexible display functional layer, the heat dissipation layer being disposed on a side of the ultra-thin glass layer away from the flexible display functional layer; the heat dissipation layer has a heat dissipation effect.
- The display panel of claim 3, wherein the heat dissipation layer is located on a surface of the ultra-thin glass layer.
- The display panel of claim 2, wherein when the elastic functional layer comprises an ultra-thin glass layer, the display panel further comprises an electromagnetic shielding layer, the ultra-thin glass layer being disposed on a side of the flexible display functional layer, the electromagnetic shielding layer being disposed on a side of the ultra-thin glass layer remote from the flexible display functional layer; the electromagnetic shielding layer has an electromagnetic shielding effect.
- The display panel of claim 5, wherein the electromagnetic shielding layer is located on a surface of the ultra-thin glass layer.
- The display panel of claim 2, wherein the display panel further comprises an electromagnetic shielding layer disposed on a side of the ultra-thin glass layer away from the flexible display functional layer and a heat dissipation layer disposed on a side of the electromagnetic shielding layer away from the ultra-thin glass layer; the electromagnetic shielding layer has an electromagnetic shielding effect, and the heat dissipation layer has a heat dissipation effect.
- The display panel of claim 2, wherein the display panel further comprises an electromagnetic shielding medium and a heat dissipation medium dispersed in the electromagnetic shielding medium, the electromagnetic shielding medium having an electromagnetic shielding effect, and the heat dissipation medium having a heat dissipation effect.
- The display panel according to claim 2, wherein the ultra-thin glass layer has a thickness of 10 μm to 100 μm, a hardness of a surface of the ultra-thin glass layer is 3H to 9H, a bending radius of the ultra-thin glass layer is R3 to R6, the preset elastic parameter is a young's modulus of the ultra-thin glass layer, and the young's modulus of the ultra-thin glass layer is 10 GPa to 100 GPa.
- The display panel according to claim 2, wherein when the elastic functional layer is a liquid metal layer, the liquid metal layer has the predetermined elastic parameter, and the liquid metal layer has an electromagnetic shielding effect and a heat dissipation effect.
- The display panel of claim 10, wherein the predetermined elastic parameters include a tensile strength of the liquid metal layer and a young's modulus of the liquid metal layer, the tensile strength of the liquid metal layer is 1500-2000MPa, and the young's modulus of the liquid metal layer is 90-120 GPa.
- The display panel of claim 1, further comprising a glue layer disposed on a side of the flexible display functional layer, the elastic functional layer being disposed on a surface of the glue layer distal from the flexible display functional layer.
- The display panel of claim 12, further comprising a support film disposed on a side of the flexible display functional layer, the glue layer being disposed on a surface of the support film away from the flexible display functional layer.
- An electronic device characterized in that it comprises a display panel according to any one of claims 1-13.
- A preparation method of a display panel is characterized by comprising the following steps:providing a flexible display functional layer;and forming an elastic functional layer on one side of the flexible display functional layer, wherein the elastic functional layer at least has preset elastic parameters so that the flexible display functional layer can recover to a preset flatness after being bent.
- The method of manufacturing a display panel according to claim 15, wherein the forming of the elastic functional layer on the one side of the flexible display functional layer comprises:and forming a liquid metal layer on one side of the flexible display function layer.
- The method of manufacturing a display panel according to claim 15, wherein the forming of the elastic functional layer on the one side of the flexible display functional layer comprises:and forming an ultra-thin glass layer on one side of the flexible display function layer.
- The method of manufacturing a display panel according to claim 17, further comprising, after the forming of the ultra-thin glass layer on the side of the flexible display functional layer:and forming a heat dissipation layer on one side of the ultrathin glass layer, which is far away from the flexible display functional layer, wherein the heat dissipation layer has a heat dissipation function.
- The method of manufacturing a display panel according to claim 18, wherein the heat dissipation layer is directly applied to the surface of the ultra-thin glass layer.
- The method of manufacturing a display panel according to claim 17, further comprising, after the forming of the ultra-thin glass layer on the side of the flexible display functional layer:and forming an electromagnetic shielding layer on one side of the ultrathin glass layer far away from the flexible display function layer, wherein the electromagnetic shielding layer has an electromagnetic shielding effect.
- The method of manufacturing a display panel according to claim 20, wherein the electromagnetic shielding layer is directly applied to the surface of the ultra-thin glass layer.
- The method of manufacturing a display panel according to claim 17, further comprising, after the forming of the ultra-thin glass layer on the side of the flexible display functional layer:forming an electromagnetic shielding layer on one side of the ultrathin glass layer, which is far away from the flexible display function layer, wherein the electromagnetic shielding layer has an electromagnetic shielding effect;and a heat dissipation layer is formed on one side of the electromagnetic shielding layer, which is far away from the ultrathin glass layer, and has a heat dissipation effect.
- The method of manufacturing a display panel according to claim 17, further comprising, after the forming of the ultra-thin glass layer on the side of the flexible display functional layer:mixing an electromagnetic shielding medium and a heat dissipation medium to obtain a mixed functional medium, wherein the electromagnetic shielding medium has an electromagnetic shielding effect, and the heat dissipation medium has a heat dissipation effect;and placing the mixed functional medium on the surface of the ultrathin glass layer far away from the flexible display functional layer, and forming a double functional layer.
- The method of manufacturing a display panel according to claim 17, further comprising, after the forming of the ultra-thin glass layer on the side of the flexible display functional layer:and forming a glue layer on the surface of the ultrathin glass layer facing the flexible display functional layer, wherein the glue layer is used for bonding the ultrathin glass layer to the flexible display functional layer.
- The method of manufacturing a display panel according to claim 15, wherein after the providing a flexible display functional layer, the method further comprises:forming a support film on one side of the flexible display functional layer;the forming an elastic functional layer at one side of the flexible display functional layer includes:and forming an elastic functional layer on one side of the support film far away from the flexible display functional layer.
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| PCT/CN2019/094816 WO2021003591A1 (en) | 2019-07-05 | 2019-07-05 | Display panel, electronic apparatus, and preparation method for display panel |
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| CN112767838B (en) * | 2021-01-19 | 2022-10-21 | Oppo（重庆）智能科技有限公司 | Flexible display screen and electronic equipment |
| CN117083654A (en) * | 2021-03-31 | 2023-11-17 | 华为技术有限公司 | Flexible display screen and terminal |
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| CN106373983A (en) * | 2016-09-26 | 2017-02-01 | 上海天马微电子有限公司 | Flexible display panel and flexible display screen |
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| CN109427980B (en) * | 2017-08-24 | 2021-07-27 | 上海和辉光电股份有限公司 | Flexible display panel and flexible display device |
| KR102590012B1 (en) * | 2017-11-30 | 2023-10-16 | 엘지디스플레이 주식회사 | Adhesive and Flexible Display Using the Same |
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| WO2008020566A1 (en) * | 2006-08-16 | 2008-02-21 | Hitachi, Ltd. | Semiconductor device, semiconductor device manufacturing method and display device |
| CN102629015A (en) * | 2012-03-27 | 2012-08-08 | 京东方科技集团股份有限公司 | Flexible display device and manufacturing method thereof |
| US20170352833A1 (en) * | 2016-06-07 | 2017-12-07 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Package structure of flexible oled device and display device |
| CN106373983A (en) * | 2016-09-26 | 2017-02-01 | 上海天马微电子有限公司 | Flexible display panel and flexible display screen |
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Application publication date: 20210907 |