CN115240547B - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
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- CN115240547B CN115240547B CN202210676278.5A CN202210676278A CN115240547B CN 115240547 B CN115240547 B CN 115240547B CN 202210676278 A CN202210676278 A CN 202210676278A CN 115240547 B CN115240547 B CN 115240547B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The disclosure provides a display device and a preparation method thereof. The display module includes a plurality of pixel islands movable relative to each other. The first substrate is configured to carry the display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate to form a network structure. In the process of stress stretching and retracting of the first substrate, the first particles and the second particles are separated and combined with each other, so that the network chain structure is maintained. The display device can be stretched and retracted efficiently and conveniently.
Description
Technical Field
The invention relates to the field of flexible display devices, in particular to a display device and a preparation method thereof.
Background
After the application of a flexible, foldable, fully flexible screen, stretchable displays are becoming more and more interesting in the field of display equipment as one of the important developments in display technology. The stretchable display has larger freedom degree and play space than the current flexible display screen in design, and has wide application prospect in the fields of folding intelligent equipment, wearable equipment, implantable display equipment, airplanes, automobiles and the like.
The prior stretchable display device has limited stretching capability due to the structural design, and greatly limits the application of the stretchable display device.
Disclosure of Invention
The first aspect of the present disclosure provides a display device, including a display module and a first substrate. The display module includes a plurality of pixel islands movable relative to each other. The first substrate is configured to carry the display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate to form a network structure. In the process of stretching and retracting the first substrate under the force, the first particles and the second particles are separated and combined with each other, so that the network chain structure is maintained.
In the above-described aspect, the first substrate is in a stress state during stretching and retracting of the display device, and the first particles and the second particles are spontaneously positionally arranged. In addition, in the above process, the first particles and the second particles may be recombined (including separated and combined) to maintain the network structure, thereby leaving the degree of stretching of the first substrate unrestricted by the substrate material while providing support. Therefore, the stretching capability of the first substrate is obviously improved, the stretching capability of the first substrate is not limited by the substrate material, and the stretching and retraction of the display device can be efficiently and conveniently realized.
For example, in one embodiment of the first aspect of the present disclosure, the display device further comprises an elastomeric film configured to partially or fully encapsulate the first substrate.
In the above technical solution, the elastomer film partially or completely covers the first substrate, so as to help to provide pressure to the first particles and the second particles in the stressed state of the first substrate to continuously form the net chain, and better maintain the form of the first substrate.
For example, in one embodiment of the first aspect of the present disclosure, the first particles comprise a first body and a plurality of first connection portions disposed on the first body, the second particles comprise a second body and a plurality of second connection portions disposed on the second body, and the first connection portions and the second connection portions are configured to be shape-matched so as to be detachable and combinable with each other.
In the above technical solution, during the stretching and retracting process of the display device, the first particles and the second particles may be conveniently separated or combined, so as to perform position arrangement and continuously form a mesh chain structure.
For example, in a specific embodiment of the first aspect of the present disclosure, the first connection portion is an elastic barb, the second connection portion is a barb or a loop structure, or the first connection portion is a protrusion, and the second connection portion is a groove matching the shape of the protrusion.
In the above technical solution, during the stretching and retracting process of the display device, the hooks and the barbs, the hooks and the ring structure, or the protrusions and the grooves may be combined and separated from each other.
For example, in a specific implementation of the first aspect of the present disclosure, the display module includes a second substrate and a display function layer. The second substrate is arranged on the surface of the first substrate and comprises a plurality of substrate units which are spaced from each other, and the display function layer is positioned on one side of the second substrate which is away from the first substrate and comprises a plurality of display units which are spaced from each other. Wherein the display units and the substrate units are arranged in one-to-one correspondence, and the display units and the substrate units corresponding to each other form a pixel island.
For example, in a specific embodiment of the first aspect of the disclosure, the display module is located outside the elastomeric film, and the substrate unit is attached to a side of the elastomeric film facing away from the first substrate.
In the above technical solution, the elastomer film only covers the first substrate, so that pressure can be provided to the first substrate from any direction of the first substrate during the deformation process of the first substrate, so as to better maintain the morphology of the first substrate. And secondly, the display module is attached to the elastic membrane and can move along with the stretching deformation of the elastic membrane, so that the display device can realize stretching display. Again, the elastomeric film may prevent the first and second particles from entering the gaps between the pixel islands.
For example, in a specific embodiment of the first aspect of the present disclosure, the display module is located outside the elastomeric film, and a portion of the elastomeric film located between the first substrate and the display module is provided with a plurality of openings through which the first substrate carries the substrate unit. For example, further, the substrate unit is attached to the first substrate.
In the technical scheme, the first substrate is directly combined with the second substrate at the opening, and the display device is basically not constrained by the substrate unit in the stretching process, so that the stretching is uniform.
For example, in a specific embodiment of the first aspect of the present disclosure, the surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions matching the shape of the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles; or the surface of the substrate unit facing the first substrate is provided with a plurality of third particles, the third particles comprise a third body and a plurality of fourth connecting parts arranged on the third body, and the fourth connecting parts are matched with the first connecting parts and/or the second connecting parts in shape so as to be combined with the first particles and/or the second particles.
In the above technical solution, the first substrate is connected with the substrate unit at the opening portion through the third connection portion or the third particles in a shape matching manner, and the first particles and/or the second particles at the lower portion of the pixel island can roll and are movably connected with the pixel island, so that stretching of each portion of the first substrate is more uniform.
For example, in a particular embodiment of the first aspect of the present disclosure, the third particles have a size smaller than the size of the first particles and/or the second particles.
In the above technical solution, the size of the third particles is smaller than the size of the first particles and/or the second particles, so that enough contact positions can be provided to facilitate the buckling with the first substrate.
For example, in one embodiment of the first aspect of the present disclosure, the elastomeric film encapsulates the display module and the first substrate, and the substrate unit is attached to the first substrate.
In the above technical scheme, the elastomer film coats the display module and the first substrate simultaneously, applies pressure to the first substrate so as to improve the stability of the combination of the display module and the first substrate, and can further isolate the display module from water and oxygen. Meanwhile, the first substrate can also play a role in buffering and damping the display module.
For example, in a specific embodiment of the first aspect of the present disclosure, the surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions matching the shape of the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles. Or, the surface of the substrate unit facing the first substrate is provided with a plurality of third particles, the third particles comprise a third body and a plurality of fourth connecting parts arranged on the third body, and the fourth connecting parts are matched with the first connecting parts and/or the second connecting parts in shape so as to be combined with the first particles and/or the second particles. Further, the third particles have a size smaller than the first particles and/or the second particles.
In the technical scheme, the substrate unit is movably connected with the first substrate through the third connecting part or the fourth connecting part, and the pixel island can move along with the first substrate in the stretching process, so that the display is more uniform.
For example, in one embodiment of the first aspect of the present disclosure, the first particles and the second particles are connected to each other to constitute the first substrate, i.e., the first substrate is composed of only the first particles and the second particles.
For example, in one particular embodiment of the first aspect of the present disclosure, the first substrate further comprises a first carrier in which the first particles and the second particles are contained, the first carrier being a flowable colloid.
In the above technical solution, during the stretching and retracting process of the display device, the network structure formed by the first particles and the second particles plays a role of a skeleton, the flowable colloid serving as the first carrier plays a role of a matrix, and the first carrier helps to limit the distribution of the first particles and the second particles, so that the morphology of the first substrate can be changed relatively uniformly on a macroscopic scale, and thus the morphology of the first substrate can be maintained.
A second aspect of the present disclosure provides a method for manufacturing a display device, including: providing a substrate; coating a mixture on a substrate, the mixture comprising a first carrier, first particles, and second particles; pre-pressing the mixture on the surface of the base to form a first substrate; the display module is arranged on the first substrate; the substrate is removed.
For example, in a method of manufacturing a display device provided in one embodiment of the second aspect of the present disclosure, the first carrier is a flowable colloid, and the first carrier accommodates the first particles and the second particles to form the first substrate.
For example, in a method for manufacturing a display device provided in another embodiment of the second aspect of the present disclosure, the first carrier includes a volatilizable material, and the method for manufacturing the first substrate further includes: after pre-pressing the mixture, the volatizable material is removed by evaporation.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
Fig. 2 is a schematic structural diagram of a first particle and a second particle of a display device according to an embodiment of the disclosure.
Fig. 3 is a schematic structural diagram of a display device in which a substrate unit is directly attached to an elastomer film according to an embodiment of the disclosure.
Fig. 4 is a schematic diagram of a display device in which a substrate unit is directly attached to a first substrate at an opening on an elastomer film according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a display device in which a substrate unit is connected to a first substrate through a third link at an opening on an elastomer film according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of a display device in which a substrate unit is connected to a first substrate through third particles at an opening on an elastomer film according to an embodiment of the disclosure.
Fig. 7 is a schematic structural diagram of a display device in which a substrate unit is directly attached to a first substrate when an elastomer film is used to encapsulate the display module and the first substrate according to an embodiment of the disclosure.
Fig. 8 is a schematic structural diagram of a display device in which a substrate unit is connected to a first substrate through a third link portion when an elastomer film encapsulates the display module and the first substrate according to an embodiment of the disclosure.
Fig. 9 is a schematic structural diagram of a display device in which a substrate unit and a first substrate are connected by a third particle when an elastomer film encapsulates the display module and the first substrate according to an embodiment of the disclosure.
Fig. 10 is a schematic structural diagram of a display device in which the first substrate further includes a first carrier according to an embodiment of the disclosure.
Fig. 11 is a schematic structural diagram of a display device in which a first substrate includes a first carrier and the first substrate is coated with an elastomer film according to an embodiment of the disclosure.
Fig. 12 is a schematic diagram of a first substrate of a display device provided in an embodiment of the disclosure in a stretched state.
Fig. 13 is a schematic diagram of a method for manufacturing a display device according to an embodiment of the disclosure.
Fig. 14 is a schematic diagram of a manufacturing method of another display device according to an embodiment of the disclosure.
Fig. 15 is a schematic diagram of a method for manufacturing a display device according to another embodiment of the disclosure.
Fig. 16 is a schematic diagram of a method for manufacturing a display device according to another embodiment of the disclosure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
With the continuous development of electronic information technology, the requirements of display devices are also increasing. The rise of new generation flexible electronic devices has prompted human research into display devices having light weight, thin thickness, flexibility, and wrinkling properties, where stretchability is considered to be a major key factor in electronic device design. Compared with flexible display screens such as bendable and foldable display screens, the application of the stretchable screen has larger freedom degree and play space, such as the application in the fields of intelligent equipment, airplane and automobile display, wearable electronic products and the like. Undoubtedly, not only the age of flexible electronic products has come, but also the age of extensible and stretchable electronic products is forthcoming. How to conveniently realize the stretching and retracting process while improving the stretching capability of the stretchable electronic device is important.
In stretchable display, it is important to realize stretching of the display device efficiently and conveniently. The flexible display device can adopt an elastomer substrate, combines a half-etching or full-etching substrate etching process between pixel islands, or adopts an auxiliary substrate process, is limited by the structural design of the substrate, and the stretching capability mainly depends on the performance of the substrate material, and is very limited under the condition of considering the supporting capability.
At least one embodiment of the present disclosure provides a display device and a method for manufacturing the same, which can solve the above technical problems. The display device comprises a display module and a first substrate. The display module includes a plurality of pixel islands movable relative to each other. The first substrate is configured to carry the display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate to form a network structure. In the process of stress stretching and retraction of the first substrate, the first particles and the second particles are separated and combined with each other, a net chain structure is maintained, and deformation of the first substrate is supported. The first substrate carrying the display module is arranged to be the first particles and the second particles which can be separated and combined with each other, and in the stretching process of the display device, the first substrate is in a stressed deformation state, and the first particles and the second particles are spontaneously spread under the action of force and separated and combined with each other to maintain the network chain structure, so that the stretching capability is realized. During retraction of the display device, the first particles and the second particles rearrange and restore the original thickness of the first substrate. Therefore, the stretching capability of the display device is not limited by the performance of the substrate material, the stretching capability of the display device is improved to a greater extent, and meanwhile, the stretching and retracting processes can be realized conveniently.
Hereinafter, a display device and a method of manufacturing the same in at least one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In these drawings, a space rectangular coordinate system is established with reference to a plane (for example, a plane of the second substrate 3 shown in fig. 1) in which the display module is located, so as to describe the positions of the respective structures in the display module.
In at least one embodiment of the present disclosure, as shown in fig. 1, a display device includes a display module, a first substrate 2. The display module comprises a plurality of pixel islands 1 movable relative to each other, and the first substrate 2 comprises a plurality of first particles 10 and second particles 20. The first and second particles 10 and 20 are pre-stressed in an initial state before stretching. Under this pre-stress, the first and second particles 10 and 20 are initially in a combined or micro-combined state such that the first and second particles 10 and 20 form a network chain structure. During the stretching of the display device, a force is continuously applied to the first substrate 2, the first substrate 2 is gradually thinned, and the first particles 10 and the second particles 20 are pressed and spread out from each other and combined with each other, continuously forming a network structure. During retraction of the display device, the first particles 10 and the second particles 20 are rearranged and combined with retraction of the first substrate 2, and the thickness of the first substrate 2 is gradually recovered. In the stretching and retracting process of the display device, the first particles 10 and the second particles 20 in the first substrate 2 are stressed, the arrangement position and the arrangement thickness can be automatically adjusted, the stretching capability is not limited by the performance of the substrate material, the stretching capability is obviously improved, and the stretching and retracting of the display device can be efficiently and conveniently realized.
For example, in one embodiment of the present disclosure, the display device further includes an elastomeric film 3, as shown in fig. 3-10. The elastomeric film 3 is configured to partially or fully encapsulate the first substrate 2 to apply pressure to the first and second particles 10, 20 to better maintain the morphology of the first substrate 2.
In this embodiment, the elastomer film 3 coats the first substrate 2, and the pressure to the first substrate 2 can be maintained so that the first substrate 2 better maintains the network structure composed of the first particles 10 and the second particles 20. While the first substrate 2 is in a stressed state (e.g., stretched, retracted), the elastomeric film 3 continues to apply pressure to the first and second particles 10, 20 of the first substrate 2, better enabling a rearrangement of the first and second particles 10, 20 during stretching and retraction of the display device, and better maintaining the morphology of the first substrate 2. Meanwhile, when the display device is retracted from the stretching state, the retraction of the elastomer film 3 can promote the retraction of the first substrate 2, so that the stretching and the retraction of the display device are more efficiently and conveniently realized.
In the embodiments of the present disclosure, the thickness and the material of the elastomeric film are not specifically defined, and may be selected according to the stretching capability and the structural design requirements.
For example, in one embodiment of the present disclosure, the first particles include a first body and a plurality of first connection portions disposed on the first body, the second particles include a second body and a plurality of second connection portions disposed on the second body, and the shapes of the first connection portions and the second connection portions are matched with each other so as to facilitate separation and combination of the first particles and the second particles during stretching and retraction. By way of example, fig. 2 shows a structural form of the first particles 10 and the second particles 20. In this structure, the first particles 10 include the first body 101 and the first connection portion 102, and the second particles 20 include the second body 201 and the second connection portion 202.
In this embodiment, the first connection portion provided on the first microparticle and the second connection portion provided on the second microparticle are matched in shape with each other. Therefore, the first particles and the second particles can be conveniently split or combined in the stretching and retracting process of the display device so as to realize rearrangement and maintain the network chain structure.
It should be noted that, the specific positions and numbers of the first connection portions and the second connection portions are not limited in the present disclosure, and may be set according to actual requirements of the thickness and the stretching amount of the substrate.
For example, in one embodiment of the present disclosure, the first connection of the first particles is an elastic barb and the second connection of the second particles is a barb and/or loop structure.
For example, in another embodiment of the present disclosure, as shown in fig. 2, the first connection portion 102 of the first particles 10 is a protrusion and the second connection portion of the second particles 20 is a groove matching the shape of the first connection portion 102.
For example, in one embodiment of the present disclosure, the shape of the first body and the second body includes a sphere, a polyhedron, a bar, a rod, a pyramid, a torpedo, or an ellipsoid. The shapes of the first body and the second body can be various, and the processing is convenient.
For example, in one embodiment of the present disclosure, the first body and/or the second body has a dimension less than or equal to 100 microns, such as 90 microns, 70 microns, 50 microns, 30 microns, 20 microns, 15 microns, etc., to facilitate maximum stretch while facilitating rearrangement and combining, separation of the first and second particles 10, 20 from each other.
The materials of the first particles and the second particles include metal particles and/or plastic particles wrapped by an insulating material.
For example, in one embodiment of the present disclosure, the display module includes a second substrate and a display function layer, as exemplarily shown in fig. 1 and 3 to 10. The second substrate is located on the surface of the first substrate 2 and comprises a plurality of substrate units 30 spaced from each other, the display function layer is located on the side of the second substrate facing away from the first substrate 2 and comprises a plurality of display units 40 spaced from each other, and the display units 40 and the substrate units 30 are arranged in a one-to-one correspondence to form the pixel island 1.
It should be noted that the positioning of the second substrate on the surface of the first substrate may include direct or indirect contact between the surfaces of the second substrate and the first substrate.
For example, in one embodiment of the present disclosure, the display module is located outside the elastomeric film 3, as illustrated in fig. 3-6, by way of example. During stretching of the display device, the elastomer film 3 continuously applies pressure to the first substrate 2, so that the first and second particles 10 and 20 in the first substrate 2 are gradually spread out and combined with each other to maintain the network structure, and stretching of the display device is achieved.
In this embodiment, the elastomer film 3 only covers the first substrate 2, so that the elastomer film can provide pressure to the first substrate 2 from any direction of the first substrate 2 during deformation of the first substrate 2 to maintain the network structure, and the morphology of the first substrate can be better maintained. In addition, the elastomer film 3 can prevent the first particles 10 and the second particles 20 from entering the gaps between the pixel islands 1.
For example, in one embodiment of the present disclosure, as shown in fig. 3, the display module is located outside the elastomeric film 3, and the substrate unit 30 of the second substrate is attached (e.g., glued) to the side of the elastomeric film 3 facing away from the first substrate 2.
In this embodiment, the display module is attached to the elastomer film 3 and can move along with the stretching deformation of the elastomer film 3, so that the display device can realize stretching display.
For example, in some embodiments of the present disclosure, as shown in fig. 4, 5 and 6, the display module is located outside the elastomeric film 3, and a portion of the elastomeric film 3 located between the first substrate 2 and the display module is provided with a plurality of openings 8, the first substrate 2 carrying the substrate unit 30 through the openings 8.
Next, by way of example, with reference to fig. 4, 5, and 6, different bonding methods of the display module and the first substrate 2 will be described when the portion of the elastomer film 3 between the first substrate 2 and the display module is provided with a plurality of openings 8.
In one example of the present disclosure, as shown in fig. 4, the substrate unit 30 is attached to the first substrate 2 at the position of the opening 8. In this case, the substrate unit 30 may be bonded to the first substrate 2 by the adhesive layer 4 in such a manner that the bonding portion of the first substrate 2 to the substrate unit 30 is not changed during the stretching.
In another example of the present disclosure, as shown in fig. 5, a surface of the substrate unit 30 facing the first substrate 2 may be provided with a plurality of third connection parts 5 matching the first connection parts and/or the second connection parts in shape, and may be combined with the first particles 10 and/or the second particles 20. In the initial state, the third connecting part 5 is combined with the first connecting part and/or the second connecting part under the action of the pre-pressure force to form a net chain structure. In the stretching or retracting process of the display device, the third connecting part 5 is movably connected with the first particles 10 and the second particles 20 in the first substrate 2, and the stress of each part of the first substrate 2 is relatively uniform.
In still another example of the present disclosure, as shown in fig. 6, a surface of the substrate unit 30 facing the first substrate 2 is provided with a plurality of third particles 6, the third particles 6 include a third body and a plurality of fourth connection parts provided on the third body, and the fourth connection parts match the shape of the first connection parts and/or the second connection parts and may be combined with the first particles 10 and/or the second particles 20. In this way, during the stretching process of the display device, the first substrate 2 is movably connected with the substrate unit 30, and the stress of each part of the first substrate 2 is more uniform.
For example, in embodiments of the present disclosure, as shown in fig. 6, the size of the third particles 6 is smaller than the size of the first particles 10 and/or the second particles 20 to provide sufficient contact locations to facilitate maintaining the combination of the third particles 6 with the first particles 10 and/or the second particles 20 in the first substrate 2.
For example, in an embodiment of the present disclosure, as illustrated in fig. 7, the elastomeric film 3 encapsulates the display module and the first substrate 2, and the substrate unit 30 is attached to the first substrate 2. In this way, the elastomer film 3 can further block water and oxygen from entering the display module while applying pressure to the first substrate 2, and the first substrate 2 also increases the shock resistance of the display module. Meanwhile, in the stretching process of the display device, the pixel island 1 of the display module can move along with the joint part of the substrate unit 30 and the first substrate 2, which is beneficial to ensuring the display quality.
Next, with reference to fig. 8 and 9, another bonding method between the display module and the first substrate 2 when the elastomer film 3 covers the display module and the first substrate 2 will be described. Illustratively, as shown in fig. 8, the surface of the substrate unit 30 facing the first substrate 2 may be combined with the first particles 10 and/or the second particles 20 by providing a plurality of third connection parts 5 matching the shape of the first connection parts and/or the second connection parts. As also illustrated in fig. 9, the surface of the substrate unit 30 facing the first substrate 2 may be provided with a plurality of third particles 6, and the third particles 6 include a third body and a plurality of fourth connection portions provided on the third body, the fourth connection portions being matched in shape with the first connection portions and/or the second connection portions, and may be combined with the first particles 10 and/or the second particles 20. Therefore, the display module is movably connected with the first substrate 2, and in the stretching or retracting process of the display device, the connection position of the first substrate 2 and the display module can be changed along with the stretching process, and the stress of each part of the first substrate 2 is more uniform.
In embodiments of the present disclosure, the size of the third particles 6 is smaller than the size of the first particles 10 and/or the second particles 20 to provide as many combined (or interfitted) positions as possible.
For example, in the embodiment of the present disclosure, the first particles 10 and the second particles 20 after the pre-compression are combined with each other into a network structure, constituting the first substrate 2.
For example, in an embodiment of the present disclosure, exemplarily, as shown in fig. 10, the first substrate 2 further includes a first carrier 7, and the first particles 10 and the second particles 20 are accommodated in the first carrier 7. In this embodiment, the first substrate 2 is composed of the first fine particles 10, the second fine particles 20, and the first carrier 7, the first fine particles 10 and the second fine particles 20 are pressed to form a network structure to function as a skeleton, and the first carrier 7 functions as a base. During the retraction process of the display device, the first particles 10 and the second particles 20 drive the first carrier 7 to retract uniformly, and the first carrier 7 is beneficial to better maintaining the shape of the first substrate 2.
For example, in an embodiment of the present disclosure, exemplarily, as shown in fig. 11, the first substrate 2 further includes a first carrier 7, and the first particles 10 and the second particles 20 are accommodated in the first carrier 7, and the elastomer film 3 coats the first substrate 2. In this embodiment, the elastomer film 3 covers the first substrate 2, and the first substrate is always in a pressed state during the stretching and retracting process of the display device, which is beneficial to better maintaining the shapes of the first carrier 7 and the first substrate 2 and simultaneously beneficial to uniform stretching and retracting of the first substrate 2.
Fig. 12 is a schematic view schematically showing a network structure formed by combining the first fine particles 10 and the second fine particles 20 with each other when the first substrate 2 is in a stretched state.
At least one embodiment of the present disclosure provides a method of manufacturing a display device as described above. As illustrated in fig. 13, the manufacturing method of the display device includes the steps of:
s101: a substrate is provided.
S102: coating the mixture on a substrate: the mixture includes a first carrier, first particles and second particles, and the mixture can be coated or silk screened onto the module. The first carrier accommodates the first particles and the second particles for maintaining the morphology of the first particles and the second particles.
In some embodiments of the present disclosure, the first carrier is a low temperature flowable colloid, such as an optical adhesive, polydimethylsiloxane (PDMS), that is flowable at less than 100 ℃, and the first particles 10 and the second particles 20 are contained in the first carrier to form the first substrate.
In some embodiments of the present disclosure, the first carrier may also be a volatizable material such as Propylene Glycol Methyl Ether Acetate (PGMEA).
It should be noted that the thickness of the first substrate is not particularly limited, and may be selected according to the stretch ratio requirement and/or structural design.
S103: pre-pressing the mixture to form a first substrate: and pre-pressing the mixture on the surface of the substrate to ensure that the first connecting parts of the first particles and the second connecting parts of the second particles are in a buckled (or matched) state to form an initial network chain structure.
When the first carrier is a volatilizable material, the preparation method further includes step S1031: after pre-pressing the mixture and before disposing the display module on the substrate carrying the first particles and the second particles, the first carrier is evaporated, and the remaining first particles and second particles are combined with each other into a network structure to form the first substrate. Further, the first particles and the second particles are particles resistant to the polyimide organic solvent.
S104: the display module is disposed on the first substrate.
The display module comprises a second substrate (the second substrate comprises a plurality of substrate units which are formed by etching and are spaced from each other), and a display functional layer which is positioned on one side of the second substrate which is far away from the first substrate, wherein the display functional layer comprises a plurality of display units which are spaced from each other, the display units and the substrate units are arranged in a one-to-one correspondence manner, and the display units and the substrate units which are corresponding to each other form a pixel island.
S105: the substrate is removed.
The above-described manufacturing method can manufacture a display device in which the substrate unit 30 of the display module as illustrated in fig. 1 is directly attached to the first substrate 2.
Fig. 14 is a schematic diagram of a method for manufacturing a display device according to another embodiment of the disclosure. In addition to the above steps, in this embodiment, the manufacturing method of the display device further includes a step S106 of providing an elastomer film. The elastomer film is used for partially or fully coating the first substrate so as to better maintain the network structure of the first particles and the second particles, and continuously apply pressure to the first particles and the second particles of the first substrate when the first substrate is in a stressed deformation state, so that the rearrangement and combination of the first particles 10 and the second particles 20 in the stretching and retracting process of the display device are better realized, and the form of the first substrate is better maintained. Meanwhile, when the display device is retracted from a stretching state, the retraction of the elastomer film 3 can promote the retraction of the first substrate, so that the stretching and the retraction of the display device are more efficiently and conveniently realized.
The above-described manufacturing method may manufacture a display device in which the elastomeric film 3 as illustrated in fig. 7 covers the display module and the first substrate 2, and the substrate unit 30 is attached to the first substrate 2, or a display device in which the substrate unit 30 and the first substrate 2 are movably connected as illustrated in fig. 8 and 9, or a display device in which the first substrate 2 includes the first carrier 7 as illustrated in fig. 10.
Fig. 15 is a schematic diagram of a method for manufacturing a display device according to another embodiment of the disclosure. As shown in fig. 15, after evaporating the first carrier in step S1031, the method for manufacturing a display device first removes the substrate in step S104, then provides the elastic mold body in step S105, and then places the display module on the first substrate coated with the elastomer film in step S106. The manufacturing method may manufacture a display device in which the display module shown in fig. 3 is located outside the elastic film 3, the substrate unit 30 of the second substrate is attached to the side of the elastic film 3 facing away from the first substrate 2, and may manufacture a display device in which the display module shown in fig. 4, 5 and 6 is located outside the elastic film 3, a portion of the elastic film 3 located between the first substrate 2 and the display module is provided with a plurality of openings 8, and the first substrate 2 carries the display device of the substrate unit 30 through the openings 8.
Fig. 16 is a schematic diagram of a method for manufacturing a display device according to still another embodiment of the disclosure. As shown in fig. 16, after pre-pressing the mixture in step S103, the method for manufacturing a display device first performs step S104 to remove the substrate, then performs step S105 to provide an elastic mold body, and then performs step S106 to dispose the display module on the first substrate coated with the elastomer film. The manufacturing method may manufacture a display device as shown in fig. 11, in which the first substrate 2 further includes a first carrier 7, and the first particles 10 and the second particles 20 are accommodated in the first carrier 7.
In addition, not all the structures of the display device described above are described for clarity of illustration. To implement the necessary functions of the display device, those skilled in the art may set other structures according to a specific application scenario, and the embodiments of the present disclosure are not limited thereto.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the present disclosure.
Claims (16)
1. A display device, comprising:
the display module comprises a plurality of pixel islands which can move relative to each other; and
a first substrate configured to carry the display module and including a plurality of first particles and a plurality of second particles, the first particles and the second particles cooperating with each other to form a network structure;
wherein the first substrate is separated from or combined with the second particles during the process of being stretched or retracted by force, so as to maintain the network structure,
the first particles comprise a first body and a plurality of first connecting parts arranged on the first body, the second particles comprise a second body and a plurality of second connecting parts arranged on the second body, and
the first connecting part is an elastic barb and the second connecting part is a barb or an annular structure, or the first connecting part is a protrusion and the second connecting part is a groove matched with the protrusion in shape, so that the first connecting part and the second connecting part can be detached and combined with each other.
2. The display device of claim 1, further comprising an elastomeric film configured to partially or fully encapsulate the first substrate.
3. The display device of claim 2, wherein the display module comprises:
a second substrate disposed on the first substrate surface and including a plurality of substrate units spaced apart from each other; and
a display function layer located at one side of the second substrate facing away from the first substrate and including a plurality of display units spaced apart from each other;
wherein the display units and the substrate units are disposed in one-to-one correspondence, and the display units and the substrate units corresponding to each other constitute the pixel island.
4. A display device as claimed in claim 3, wherein the display module is located outside the elastomeric film, and
the substrate unit is attached to one side of the elastomer film, which is away from the first substrate.
5. A display device as claimed in claim 3, characterized in that the display module is located outside the elastomer film, the portion of the elastomer film located between the first substrate and the display module being provided with a plurality of openings through which the first substrate carries the substrate unit.
6. The display device according to claim 5, wherein the substrate unit is attached to the first substrate.
7. The display device according to claim 5, wherein a surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions matching the shape of the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles.
8. The display device according to claim 5, wherein a surface of the substrate unit facing the first substrate is provided with a plurality of third particles including a third body and a plurality of fourth connection portions provided on the third body, the fourth connection portions being shape-matched with the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles.
9. The display device according to claim 8, wherein the third particles have a size smaller than the first particles and/or the second particles.
10. The display device according to claim 3, wherein the elastomer film covers the display module and the first substrate, and
the substrate unit is attached to the first substrate.
11. The display device according to claim 3, wherein the elastomer film covers the display module and the first substrate, and
the surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions shape-matched with the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles.
12. The display device according to claim 3, wherein the elastomer film covers the display module and the first substrate, and
the surface of the substrate unit facing the first substrate is provided with a plurality of third particles, the third particles comprise a third body and a plurality of fourth connecting parts arranged on the third body, and the fourth connecting parts are matched with the first connecting parts and/or the second connecting parts in shape so as to be combined with the first particles and/or the second particles.
13. The display device according to claim 12, wherein the third particles have a size smaller than the first particles and/or the second particles.
14. The display device according to claim 1 or 2, wherein,
the first particles and the second particles are connected to each other to constitute the first substrate; or alternatively
The first substrate further includes a first carrier in which the first particles and the second particles are contained, the first carrier being a flowable colloid.
15. A method of manufacturing a display device according to any one of claims 1 to 14, comprising:
providing a substrate;
coating a mixture on the substrate, the mixture comprising a first carrier, first particles and second particles, wherein the first particles comprise a first body and a plurality of first connecting parts arranged on the first body, the second particles comprise a second body and a plurality of second connecting parts arranged on the second body, the first connecting parts are elastic barbs and the second connecting parts are in a barb or ring structure, or the first connecting parts are protrusions and the second connecting parts are grooves matched with the shapes of the protrusions, so that the first connecting parts and the second connecting parts are detachable and combinable with each other;
pre-pressing the mixture of the base surfaces to form a first substrate;
the display module is arranged on a first substrate;
and removing the substrate.
16. The method of claim 15, wherein,
the first carrier comprises a volatizable material, and the forming of the first substrate further comprises: after pre-pressing the mixture, the volatizable material is removed by evaporation.
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