CN111554717B - Display device and manufacturing method thereof - Google Patents
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- CN111554717B CN111554717B CN202010411372.9A CN202010411372A CN111554717B CN 111554717 B CN111554717 B CN 111554717B CN 202010411372 A CN202010411372 A CN 202010411372A CN 111554717 B CN111554717 B CN 111554717B
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention discloses a display device and a manufacturing method thereof, aiming at solving the problem that the side edge of a display product in the prior art is easy to generate the phenomenon of yellowing edge when the display product is viewed from the front, and the aesthetic property of the display effect is influenced. The display device is provided with a plane display area and a curved surface display area positioned at the periphery of the plane display area; the flat display area and the curved display area respectively comprise an anode layer positioned on one side of a substrate, a pixel limiting layer positioned on one side of the anode layer, which is far away from the substrate, and a cover plate positioned on one side of the pixel limiting layer, which is far away from the anode layer; at least one transparent film layer between the anode layer and the cover plate is mixed with a first photoluminescence material in the curved surface display area, the first photoluminescence material is configured to emit compensation light when irradiated by light emitted from the curved surface display area, and the compensation light is light which is absorbed by the pixel limiting layer after light emitted from the curved surface display area passes through the pixel limiting layer.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
With the popularization of a comprehensive screen mobile phone concept and a curved screen, more and more display (such as mobile phones) products adopt the curved screen to improve the screen occupation ratio and reduce the sense of existence of a middle frame of the display product, and the recent release of an upgraded waterfall screen of the curved screen strengthens the concept to the mind of consumers. The waterfall screen is a curved screen with a larger curved surface angle, and the side edge of the waterfall screen is bent by an angle close to 90 degrees. Under the condition of large-angle bending, the display abnormality cannot occur when the front or the side of the mobile phone is viewed from the front view angle, but the edge yellowing phenomenon easily occurs when the side of the screen is viewed from the front of the display product, and the yellowing seriously affects the aesthetic property of the display effect.
Disclosure of Invention
The invention provides a display device and a manufacturing method thereof, aiming at solving the problem that the side edge of a screen viewed from the front side of a display product in the prior art is easy to generate the phenomenon of yellowing edge, which affects the aesthetic property of the display effect.
The embodiment of the invention provides a display device, which is provided with a plane display area and a curved surface display area, wherein the curved surface display area is positioned at the periphery of the plane display area; the flat display area and the curved display area respectively comprise an anode layer positioned on one side of a substrate, a pixel limiting layer positioned on one side of the anode layer, which is far away from the substrate, and a cover plate positioned on one side of the pixel limiting layer, which is far away from the anode layer;
at least one transparent film layer between the anode layer and the cover plate is mixed with a first photoluminescence material in the curved surface display area, the first photoluminescence material is configured to emit compensation light when being irradiated by light emitted by the curved surface display area, and the compensation light is light which is emitted by the curved surface display area and is absorbed by the pixel limiting layer after passing through the pixel limiting layer.
In one possible embodiment, the first photoluminescent material is mixed within the pixel defining layer.
In one possible embodiment, the display device includes an optical glue layer between the pixel defining layer and the cover plate, and the first photoluminescent material is mixed in the optical glue layer.
In a possible implementation manner, the display device includes a display module located between the substrate base plate and the cover plate, a touch module located on a side of the display module away from the substrate base plate, an optical adhesive layer bonding the display module and the touch module, and an optical adhesive layer bonding the touch module and the cover plate; the display module comprises the anode layer and the pixel defining layer;
the first photoluminescence material is mixed in the optical adhesive layer which is used for bonding the display module and the touch module; and/or the adhesive is mixed in the optical adhesive layer which is used for bonding the touch module and the cover plate.
In one possible embodiment, the film layer mixed with the first photoluminescent material is mixed with a second photoluminescent material in the planar display area, and the second photoluminescent material is the quenched first photoluminescent material.
In one possible embodiment, the first photoluminescent material is a quantum dot material or a fluorescent material.
In one possible embodiment, the first photoluminescent material is a photoluminescent material that emits blue light.
The embodiment of the present invention further provides a manufacturing method for manufacturing the display device provided by the embodiment of the present invention, where the manufacturing method includes:
forming an anode layer on one side of a substrate;
and forming a first photoluminescence material in a curved surface display area of at least one transparent film layer between the anode layer and the cover plate, wherein the first photoluminescence material is configured to emit compensation light when irradiated by light emitted from the curved surface display area, and the compensation light is light which is emitted from the curved surface display area and is absorbed by the pixel limiting layer after passing through the pixel limiting layer.
In one possible embodiment, the forming of the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate includes:
forming the pixel limiting layer mixed with the first photoluminescence material in the curved surface display area and the plane display area;
and irradiating the pixel limiting layer of the plane display area by adopting preset light so as to quench the first photoluminescence material in the pixel limiting layer of the plane display area and convert the first photoluminescence material into a second photoluminescence material.
In one possible embodiment, the forming of the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate includes:
coating an optical adhesive layer on a plane display area by adopting a first-step coating process;
and coating an optical adhesive layer mixed with a first photoluminescence material on the curved surface display area by adopting a second-step coating process.
In one possible embodiment, the forming of the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate includes:
forming an optical adhesive layer mixed with the first photoluminescence material in the curved surface display area and the plane display area by adopting a coating process;
and irradiating the optical adhesive layer of the plane display area by adopting preset light so as to quench the first photoluminescence material in the optical adhesive layer of the plane display area and convert the first photoluminescence material into a second photoluminescence material.
The embodiment of the invention has the following beneficial effects: in the embodiment of the invention, at least one transparent film layer between the anode layer and the cover plate is mixed with the first photoluminescence material in the curved surface display area, and the first photoluminescence material can emit the compensation light when being irradiated by the light emitted by the curved surface display area, and the compensation light is the light which is emitted by the curved surface display area and is absorbed by the pixel limiting layer after passing through the pixel limiting layer, namely, even if the light of the curved surface display area is absorbed by the pixel limiting layer.
Drawings
FIG. 1 is a diagram illustrating viewing effects at different positions in the related art;
FIG. 2 is a schematic diagram illustrating a slope angle of a pixel defining layer in the related art;
FIG. 3 is a schematic diagram illustrating a yellowing of a curved display area in the related art;
fig. 4 is a schematic structural diagram of a display device provided with a first photoluminescent material in a pixel defining layer according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display device in which only the first optical glue layers are provided with the first photoluminescent materials according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display device in which a first photoluminescent material is disposed only in a second optical glue layer according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device in which a first photoluminescent material is disposed in both a first optical adhesive layer and a second optical adhesive layer according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device provided with a second photoluminescent material in a flat display area according to an embodiment of the present invention;
fig. 9 is a schematic view of a manufacturing process of a display device according to an embodiment of the present invention;
fig. 10 is a schematic view illustrating a manufacturing process of a display device according to an embodiment of the present invention, wherein a first photoluminescent material is formed on a pixel defining layer;
fig. 11 is a schematic flow chart illustrating a manufacturing process of a display device according to an embodiment of the present invention, wherein a first photoluminescent material is formed on an optical adhesive layer;
fig. 12 is a schematic flow chart illustrating a manufacturing process of another display device according to an embodiment of the invention, in which a first photoluminescent material is formed on an optical adhesive layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
In the related art, as shown in fig. 1 to fig. 3 after being combined, the display device includes a display panel 010 and a cover plate 04 positioned at a light emitting side of the display panel 010, wherein the display panel 010 includes an anode layer 02, and a pixel defining layer 03 positioned at a side of the anode layer 02 facing the cover plate 04. The display device is manufactured by forming a Pixel Definition Layer 03 (PDL) after an anode 02 (anode) process is completed. The pixel defining layer 03 is generally made of an organic photosensitive material and formed by exposure, the slope angle α of the pixel defining layer 03 is generally about 20-50 degrees (as shown in fig. 2), and when the non-curved panel is designed, because the viewing angle does not exceed the angle of the pixel defining layer 03, no display failure occurs at the normal viewing angle; however, in the case of the design of the curved screen and the waterfall screen, when the edge of the screen is viewed from the front, as shown in fig. 1 and 3, since the edge portion of the pixel is bent downward, the viewing line of sight needs to pass through the pixel defining layer 03 (as indicated by the dotted arrow in fig. 3), and some specific color light is absorbed more after passing through the pixel defining layer 03 and does not pass through or passes less from the pixel defining layer 03, that is, the display is normal in both positions F1 and F3 in fig. 1, and the display is yellow when viewed in position F2, so that the yellow color is displayed on the edge portion in the overall perception.
Based on this, referring to fig. 4, an embodiment of the invention provides a display device, which has a flat display area S1, a curved display area S2 located at the periphery of the flat display area S1; the flat display area S1 and the curved display area S2 respectively comprise an anode layer 2 positioned on one side of the substrate base plate 1, a pixel limiting layer 3 positioned on one side of the anode layer 2, which is far away from the substrate base plate 1, and a cover plate 4 positioned on one side of the pixel limiting layer 3, which is far away from the anode layer 2;
at least one transparent film layer between the anode layer 2 and the cover plate 4 is mixed with a first photoluminescence material 5 in the curved surface display area S2, the first photoluminescence material 5 is configured to emit compensation light when irradiated by light emitted from the curved surface display area S2, and the compensation light is light absorbed by the pixel defining layer 3 after the light emitted from the curved surface display area S2 passes through the pixel defining layer 3.
In the embodiment of the present invention, at least one transparent film layer between the anode layer 2 and the cover plate 4 is mixed with the first photoluminescent material 5 in the curved surface display area, and the first photoluminescent material 5 can emit the compensation light when being irradiated by the light emitted from the curved surface display area S2, and the compensation light is the light absorbed by the pixel defining layer 3 after the light emitted from the curved surface display area S2 passes through the pixel defining layer 3, that is, even if the light of the curved surface display area S2 is absorbed by the pixel defining layer 3, because the first photoluminescent material 5 is provided in the embodiment of the present invention, the first photoluminescent material 5 can emit the light absorbed by the pixel defining layer 3, and the two are overlapped, so that the light emitted from the human eye is finally normal, and further, the problem that the display product in the prior art is improved, the edge yellowing phenomenon easily occurs at the side of the screen viewed from the front side, and the aesthetic property of the display effect is affected is solved.
In specific implementation, the first photoluminescent layer material 5 may be mixed in the curved display region S2 of the plurality of layers between the anode layer 2 and the cover plate 4; in order to reduce the complexity of the process, the first photoluminescent material 5 may be mixed in the curved display region S2 of only one layer between the anode layer 2 and the cover plate 4. The film layer mixed with the first photoluminescent material 5 may be a film layer included in the display device itself, and is described below by specific examples.
For example, referring to fig. 4, the first photoluminescent material 5 is mixed within the pixel defining layer 3. In the embodiment of the present invention, the first photoluminescent material 5 is directly mixed in the pixel defining layer 3 of the curved display area S2, when the pixel defining layer 3 is coated, the first photoluminescent material 5 (e.g., quantum Dots, QD, which emits blue light) with a specific color is mixed in a coating liquid (e.g., polyimide liquid, polyimide film, PI), and after the pixel defining layer 3 is patterned, some QDs with a specific color are uniformly distributed in the pixel defining layer 3, and in a large viewing angle view in the curved display area S2, a part of light entering the pixel defining layer 3 can excite the QDs to generate absorbed light (e.g., blue), so that a part of the absorbed light can be compensated, and therefore, a lateral yellowing display abnormality caused by the absorption of the light with the specific color can be improved under a large viewing angle.
For another example, referring to fig. 5, the display device includes an optical adhesive layer 6 between the pixel defining layer 3 and the cover plate 4, and the first photoluminescent material 5 is mixed in the optical adhesive layer 6. Specifically, as shown in fig. 5, the display device includes a display module 200 located between a substrate base plate 1 and a cover plate 4, a touch module 300 located on a side of the display module 200 away from the substrate base plate 1, an optical adhesive layer 6 adhering the display module 200 and the touch module 300, and the optical adhesive layer 6 adhering the touch module 300 and the cover plate 4; the display module 200 includes an anode layer 2 and a pixel defining layer 3; the first photoluminescent material 6 is mixed in the optical adhesive layer 6 of the bonded display module 200 and the touch module 300; and/or, the first photoluminescent material 5 is mixed in the optical adhesive layer 6 that bonds the touch module 300 and the cover plate 4. That is, if the optical adhesive layer 6 for bonding the display module 200 and the touch module 300 is used as the first optical adhesive layer 61, and the optical adhesive layer 6 for bonding the touch module 300 and the cover plate 4 is used as the second optical adhesive layer 62, the first photoluminescent material 5 may be mixed only in the first optical adhesive layer 61 (as shown in fig. 5), may be mixed only in the second optical adhesive layer 62 (as shown in fig. 6), or may be mixed in both the first optical adhesive layer 61 and the second optical adhesive layer 62 with the first photoluminescent material 5 (as shown in fig. 7).
In specific implementation, as shown in fig. 8, the film layer mixed with the first photoluminescent material 5 is mixed with a second photoluminescent material 50 in the planar display area S1, and the second photoluminescent material 50 is the quenched first photoluminescent material 5. That is, for example, if the pixel defining layer 3 is mixed with the first photoluminescent material 5, the second photoluminescent material 50 may be mixed with the pixel defining layer 3 in the flat display region S1, but the photoluminescent material 50 is the quenched first photoluminescent material 5. In the embodiment of the present invention, the film layer mixed with the first photoluminescent material 5 is mixed with the second photoluminescent material 50 in the planar display area S1, and the second photoluminescent material 50 is the quenched first photoluminescent material 5, so that when only the curved display area S1 is mixed with the first photoluminescent material 5, a whole pixel defining layer 3 containing the first photoluminescent material 5 is formed first, and then the first photoluminescent material 5 in the planar display area S1 is quenched by preset light irradiation, and then only the first photoluminescent material 5 in the curved display area S2 is made to emit compensation light, which can simplify a manufacturing process of only mixing the first photoluminescent material 5 in the curved display area S2, and quench the first photoluminescent material 5 in the planar display area S1, thereby preventing a problem of color coordinate shift of the planar display area S1 that may be caused if the planar display area S1 also emits compensation light.
In a specific implementation, the first photoluminescent material 5 is a quantum dot material or a fluorescent material. Specifically, the first photoluminescent material 5 is a photoluminescent material that emits blue light.
Specifically, the quantum dot material may be any one of first compounds formed from elements in the II and VI main groups, may be any one of compounds formed from elements in the III and V main groups, or may be a doped crystal of both compounds. Common compounds may be CdSe, cdTe, mgS, mgSe, mgTe, caS, caN, caP, caAs, inN, etc. By controlling the shape, structure and size of the quantum dots, the energy gap of the quantum dots can be conveniently adjusted, the electronic states such as energy and the like are bound, and the spectrum of the quantum dots appears blue shift along with the reduction of the size of the quantum dots. For example, cdSe can emit blue light when the quantum dots are 2-5nm in size. The quantum dots can be uniformly distributed in the PI film by means of ultrasonic and the like, the proportion of the quantum dots in the PI liquid can be 1-10%, and the specific proportion is adjusted according to the color cast degree in actual test. The display Panel (Panel) after the PI film is applied is exposed and patterned to form a pixel PDL, and thus, a specific proportion of blue quantum dots is mixed in the PDL. When the viewing angle is large, the blue light quantum dots are excited by light to make up for the loss in PDL, and the phenomenon of large viewing angle deviation of Panel edge is reduced. This is similar to the purpose of adjusting the EL emission structure used in the factory.
Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method for manufacturing the display device according to the embodiment of the present invention, as shown in fig. 9, the manufacturing method includes:
step S100, forming an anode layer on one side of a substrate;
step S200, forming a first photoluminescent material in the curved surface display area of the at least one transparent film layer between the anode layer and the cover plate, where the first photoluminescent material is configured to emit compensation light when irradiated by light emitted from the curved surface display area, and the compensation light is light emitted from the curved surface display area and absorbed by the pixel defining layer after passing through the pixel defining layer.
In one embodiment, referring to fig. 10, for the step S200, forming the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate, the forming may specifically include:
step S201, forming a pixel limiting layer mixed with a first photoluminescence material in a curved surface display area and a plane display area;
step S202, irradiating the pixel limiting layer of the plane display area by adopting preset light so as to quench the first photoluminescence material in the pixel limiting layer of the plane display area and convert the first photoluminescence material into a second photoluminescence material. The specific preset light may be ultraviolet light with relatively high energy.
In the embodiment of the invention, when the first photoluminescence material is mixed in the pixel limiting layer, during specific manufacturing, the pixel limiting layer mixed with the first photoluminescence material can be formed in both the plane display area and the curved surface display area, and the first photoluminescence material in the plane display area is quenched by preset light irradiation, so that the first photoluminescence material can be mixed only in the curved surface display area, and the implementation process of mixing the first photoluminescence material only in the curved surface display area is simple and easy to implement.
In one embodiment, referring to fig. 11, for the step S200, forming the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate, specifically, the forming may include:
step S203, coating an optical adhesive layer on the flat display area by adopting a first coating process;
in step S204, a second coating process is performed to coat the optical adhesive layer mixed with the first photoluminescent material on the curved display area.
In the embodiment of the invention, when the first photoluminescence material is mixed in the optical adhesive layer, the first photoluminescence material can be mixed only in the curved surface display area through a two-step coating process during specific manufacturing.
In one embodiment, referring to fig. 12, for the step S200, forming the first photoluminescent material in the curved display area of the at least one film layer between the anode layer and the cover plate, specifically, the forming may include:
for step S205, an optical adhesive layer mixed with the first photoluminescent material is formed in the curved display area and the planar display area by a coating process;
in step S206, the optical adhesive layer of the flat display area is irradiated with a predetermined light, so that the first photoluminescent material in the optical adhesive layer of the flat display area is quenched and converted into a second photoluminescent material.
In the embodiment of the invention, when the first photoluminescent material is mixed in the optical adhesive layer, during specific manufacturing, the optical adhesive mixed with the first photoluminescent material may be formed in both the curved surface display area and the planar display area by a conventional one-step coating process, and then the first photoluminescent material in the planar display area is quenched by preset light irradiation, so that only the curved surface display area contains the first photoluminescent material.
The embodiment of the invention has the following beneficial effects: in the embodiment of the invention, at least one transparent film layer between the anode layer and the cover plate is mixed with the first photoluminescence material in the curved surface display area, and the first photoluminescence material can emit the compensation light when being irradiated by the light emitted by the curved surface display area, and the compensation light is the light which is emitted by the curved surface display area and is absorbed by the pixel limiting layer after passing through the pixel limiting layer, namely, even if the light of the curved surface display area is absorbed by the pixel limiting layer.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A display device is characterized by comprising a plane display area and a curved surface display area positioned at the periphery of the plane display area; the flat display area and the curved display area respectively comprise an anode layer positioned on one side of a substrate, a pixel limiting layer positioned on one side of the anode layer, which is far away from the substrate, and a cover plate positioned on one side of the pixel limiting layer, which is far away from the anode layer;
at least one transparent film layer between the anode layer and the cover plate is mixed with a first photoluminescence material in the curved surface display area, the first photoluminescence material is configured to emit compensation light when being irradiated by light emitted by the curved surface display area, and the compensation light is light which is absorbed by the pixel limiting layer after the light emitted by the curved surface display area passes through the pixel limiting layer; wherein the first photoluminescent material is mixed within the pixel defining layer.
2. The display device of claim 1, wherein the display device includes an optical glue layer between the pixel defining layer and the cover plate, the first photoluminescent material being mixed within the optical glue layer.
3. The display device according to claim 2, wherein the display device comprises a display module located between the substrate base plate and the cover plate, a touch module located on a side of the display module facing away from the substrate base plate, an optical adhesive layer bonding the display module and the touch module, and an optical adhesive layer bonding the touch module and the cover plate; the display module comprises the anode layer and the pixel defining layer;
the first photoluminescence material is mixed in the optical adhesive layer which is used for bonding the display module and the touch module; and/or the adhesive is mixed in the optical adhesive layer which is used for bonding the touch module and the cover plate.
4. The display device according to claim 1 or 2, wherein the film layer mixed with the first photoluminescent material is mixed with a second photoluminescent material in the flat display region, the second photoluminescent material being the quenched first photoluminescent material.
5. The display device of claim 1, wherein the first photoluminescent material is a quantum dot material or a fluorescent material.
6. The display device of claim 5, wherein the first photoluminescent material is a photoluminescent material that emits blue light.
7. A method of manufacturing a display device according to any one of claims 1 to 6, the method comprising:
forming an anode layer on one side of a substrate;
forming a first photoluminescence material in a curved surface display area of at least one transparent film layer between the anode layer and the cover plate, wherein the first photoluminescence material is configured to emit compensation light when irradiated by light emitted from the curved surface display area, and the compensation light is light emitted from the curved surface display area and absorbed by the pixel limiting layer after passing through the pixel limiting layer;
wherein, the curved surface display area of at least one film layer between the anode layer and the cover plate forms a first photoluminescence material, and the method comprises the following steps:
forming the pixel limiting layer mixed with the first photoluminescence material in the curved surface display area and the plane display area;
and irradiating the pixel limiting layer of the plane display area by adopting preset light so as to quench the first photoluminescence material in the pixel limiting layer of the plane display area and convert the first photoluminescence material into a second photoluminescence material.
8. The method of claim 7, wherein forming the first photoluminescent material in the curved display region of the at least one film layer between the anode layer and the cover plate comprises:
coating an optical adhesive layer on a plane display area by adopting a first-step coating process;
and coating an optical adhesive layer mixed with a first photoluminescence material on the curved surface display area by adopting a second-step coating process.
9. The method of claim 7, wherein forming the first photoluminescent material in the curved display region of the at least one film layer between the anode layer and the cover plate comprises:
forming an optical adhesive layer mixed with the first photoluminescence material in the curved surface display area and the plane display area by adopting a coating process;
and irradiating the optical adhesive layer of the plane display area by adopting preset light so as to quench the first photoluminescence material in the optical adhesive layer of the plane display area and convert the first photoluminescence material into a second photoluminescence material.
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