CN115240547A - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
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- CN115240547A CN115240547A CN202210676278.5A CN202210676278A CN115240547A CN 115240547 A CN115240547 A CN 115240547A CN 202210676278 A CN202210676278 A CN 202210676278A CN 115240547 A CN115240547 A CN 115240547A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The disclosure provides a display device and a preparation method thereof. The display module comprises a plurality of pixel islands which can move relative to each other. The first substrate is configured to carry a display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate with each other to form a network chain structure. In the process that the first substrate is stretched and retracted under stress, the first particles and the second particles are separated and combined with each other, and a net chain structure is maintained. The display device can be efficiently and conveniently stretched and retracted.
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 flexible, foldable, fully flexible screen is applied, the stretchable display is receiving more and more attention from the field of display equipment as one of the important development directions in display technology. Compared with the current flexible display screen, the stretchable display screen has larger degree of freedom and larger development space in design, and has wide application prospect in the fields of folding intelligent equipment, wearable equipment, implantable display equipment, airplanes, automobiles and the like.
Limited by the structural design, the existing stretchable display devices have limited stretching ability, which greatly limits the applications of the stretchable display devices.
Disclosure of Invention
The first aspect of the present disclosure provides a display device, which includes a display module and a first substrate. The display module comprises a plurality of pixel islands which can move relative to each other. The first substrate is configured to carry a display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate with each other to form a network chain structure. In the process that the first substrate is stressed to stretch and retract, the first particles and the second particles are mutually detached and combined, and the net chain structure is maintained.
In the above-described aspect, during the stretching and retracting of the display device, the first substrate is in a stressed state, and the first particles and the second particles spontaneously perform position arrangement. Furthermore, in the above process, the first and second particles may be recombined (including separated and combined) to maintain the network chain structure, thereby providing support while leaving the degree of stretching of the first substrate unrestricted by the substrate material. Therefore, the stretching capability of the first substrate is obviously improved, the stretching capability of the first substrate is not limited by substrate materials, and the stretching and retracting of the display device can be efficiently and conveniently realized.
For example, in a specific embodiment of the first aspect of the present disclosure, the display device further includes an elastomer film configured to partially or completely encapsulate the first substrate.
In the above technical solution, the elastomer film partially or completely covers the first substrate, which is helpful for providing pressure to the first particles and the second particles to continuously form network chains in a stressed state of the first substrate, so as to better maintain the form of the first substrate.
For example, in one particular embodiment of the first aspect of the present disclosure, the first particles comprise a first body and a plurality of first connectors disposed on the first body, the second particles comprise a second body and a plurality of second connectors disposed on the second body, the first and second connectors are configured to match in shape so as to be detachable and combinable with each other.
In the technical scheme, in the stretching and retracting process of the display device, the first particles and the second particles can be conveniently separated or combined so as to be arranged in position and continuously form a net chain structure.
For example, in one embodiment of the first aspect of the present disclosure, the first connecting portion is an elastic barb, and the second connecting portion is a barb or a ring structure, or the first connecting portion is a protrusion, and the second connecting portion is a groove matching the shape of the protrusion.
In the above technical solution, the hooks and the barbs, the hooks and the ring structures, or the protrusions and the grooves may be combined with and separated from each other during the stretching and retracting process of the display device.
For example, in one particular embodiment of the first aspect of the present disclosure, a display module includes a second substrate and a display functional 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 far away from the first substrate, and comprises a plurality of display units which are spaced from each other. The display units and the substrate units are arranged in one-to-one correspondence, and the display units and the substrate units which correspond to each other form pixel islands.
For example, in one specific embodiment of the first aspect of the present disclosure, the display module is located outside the elastomer film, and the substrate unit is attached to a side of the elastomer film facing away from the first substrate.
In the above technical solution, the elastomer film only covers the first substrate, so that during the deformation of the first substrate, pressure can be provided to the first substrate from any direction of the first substrate to better maintain the form of the first substrate. Secondly, the display module assembly laminating can remove along with the tensile deformation of elastomer membrane on the elastomer membrane to make display device can realize tensile demonstration. Again, the elastomeric film may prevent the first and second particles from entering the gaps between the pixel islands.
For example, in one 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, the substrate unit is further 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 restricted by the substrate unit in the stretching process and is stretched more uniformly.
For example, in one embodiment of the first aspect of the present disclosure, a surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions matched in shape to 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 to the substrate unit at the opening portion through the third connection portion or the third particle in a shape matching manner, and the first particle and/or the second particle under the pixel island can roll and be movably connected to 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 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 size of the second particles, so that sufficient contact positions are provided to facilitate buckling with the first substrate.
For example, in one embodiment of the first aspect of the present disclosure, the display module and the first substrate are covered by the elastomer film, and the substrate unit is attached to the first substrate.
In the technical scheme, the display module and the first substrate are simultaneously coated by the elastomer film, the first substrate is pressurized, so that the stability of the combination of the display module and the first substrate is improved, and the display module can be further isolated from water and oxygen. Meanwhile, the first substrate can also play a role in buffering and damping for the display module.
For example, in one specific embodiment of the first aspect of the present disclosure, a surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions matched in shape to the first connection portions and/or the second connection portions so as 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 size of the first particles and/or the second particles.
In the above technical solution, the substrate unit is movably connected to the first substrate through the third connection portion or the fourth connection portion, and the pixel island can move with the first substrate during the stretching process, so that the display is more uniform.
For example, in one specific 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, that is, the first substrate is constituted only by the first particles and the second particles.
For example, in one 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 chain structure formed by the first particles and the second particles serves as a skeleton, the flowable colloid serving as the first carrier serves as a matrix, and the first carrier helps to restrict the distribution of the first particles and the second particles, so that the morphology of the first substrate may be relatively uniformly changed in a macroscopic view, and the morphology of the first substrate may be maintained.
A second aspect of the present disclosure provides a method of manufacturing a display device, including: providing a substrate; coating a mixture on a substrate, the mixture comprising a first support, first particles, and second particles; prepressing the mixture on the surface of the base to form a first substrate; arranging a display module on a first substrate; and removing the substrate.
For example, in a method for manufacturing a display device according to a second aspect of the present disclosure, the first carrier is a flowable colloid, and the first carrier contains the first particles and the second particles to form a first substrate.
For example, in another embodiment of the second aspect of the present disclosure, there is provided a method for manufacturing a display device, wherein the first carrier includes a volatizable 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 present disclosure.
Fig. 2 is a schematic structural diagram of first particles and second particles of a display device according to an embodiment of the disclosure.
Fig. 3 is a schematic structural view of a display device in which a substrate unit is directly attached to an elastomer film according to an embodiment of the present disclosure.
Fig. 4 is a structural view 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 view 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 present disclosure.
Fig. 7 is a schematic structural view of a display device in which a substrate unit is directly attached to a first substrate when a display module and the first substrate are coated with an elastomer film according to an embodiment of the present 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 a display module and the first substrate are covered with an elastomer film according to an embodiment of the present disclosure.
Fig. 9 is a schematic structural diagram of a display device in which a substrate unit is connected to a first substrate through third particles when a display module and the first substrate are covered with an elastomer film according to an embodiment of the present disclosure.
Fig. 10 is a schematic structural diagram of a display device in which a first substrate further includes a first carrier according to an embodiment of the present 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 covered with an elastomer film according to an embodiment of the disclosure.
Fig. 12 is a schematic diagram of a display device according to an embodiment of the present disclosure in which a first substrate is in a stretched state.
Fig. 13 is a schematic diagram illustrating a manufacturing method of a display device according to an embodiment of the disclosure.
Fig. 14 is a schematic diagram of another method for manufacturing a display device according to an embodiment of the disclosure.
Fig. 15 is a schematic diagram of a method for manufacturing another display device according to an embodiment of the present disclosure.
Fig. 16 is a schematic diagram illustrating a method for manufacturing a display device according to another embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
With the continuous development of electronic information technology, people have higher and higher requirements on display devices. The rise of a new generation of flexible electronic devices has prompted human research into display devices having properties of light weight, thin thickness, flexibility, ruggedness, etc., wherein the stretchability is considered to be a major key factor in the design of electronic devices. Compared with flexible display screens which can be bent, folded and the like, the stretchable screen has larger freedom and play space in application, such as fields of intelligent equipment, airplane and automobile displays, wearable electronic products and the like. Undoubtedly, not only the era of flexible electronic products has come, but also the era of extensible, stretchable electronic products has come. How to conveniently realize stretching and retracting processes while improving the stretching capacity of the stretchable electronic device is of great importance.
In stretchable displays, it is important to efficiently and conveniently achieve stretching of the display device. The flexible display device can adopt an elastomer substrate, combines a substrate etching process of half etching or full etching between pixel islands, or adopts an auxiliary substrate process, is limited by the structural design of the substrate, has stretching capacity mainly depending on the performance of the substrate material, and has very limited stretching capacity under the condition of considering the supporting capacity.
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 comprises a plurality of pixel islands which can move relative to each other. The first substrate is configured to carry a display module and includes a plurality of first particles and a plurality of second particles, and the first particles and the second particles cooperate with each other to form a network chain structure. In the process that the first substrate is stressed to stretch and retract, the first particles and the second particles are mutually detached and combined, the net chain structure is maintained, and the deformation of the first substrate is supported. Through the first substrate that will bear the weight of the display module assembly set up to the first particle and the second particle that can split the combination each other, at the tensile in-process of display device, first substrate is in atress deformation state, and spontaneous the spreading of first particle and second particle under the effect of force is expanded to split each other, make up in order to maintain the net chain structure, realize tensile ability. During the retraction of the display device, the first particles and the second particles are rearranged and the initial thickness of the first substrate is restored. Therefore, the stretching capacity of the display device is basically not limited by the performance of the substrate material any more, the stretching capacity of the display device is improved to a greater extent, and meanwhile, the stretching and retracting processes can be conveniently realized.
Hereinafter, a display device and a method for manufacturing the same according to at least one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In these figures, a rectangular spatial coordinate system is established with reference to a plane (e.g., the plane of the second substrate 3 shown in fig. 1) where the display module is located, so as to describe the positions of the 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 microparticles 10 and the second microparticles 20 are subjected to a pre-stress in an initial state before stretching. Under this pre-stress, the first microparticles 10 and the second microparticles 20 are initially, i.e., in a combined or micro-combined state, such that the first microparticles 10 and the second microparticles 20 form a network chain structure. In the stretching process 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 against each other and spread and combined with each other to continuously form a network chain structure. During the retraction of the display device, the first particles 10 and the second particles 20 are rearranged and combined as the first substrate 2 is retracted, and the thickness of the first substrate 2 is gradually restored. 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 any more, 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, as shown in fig. 3 to 10, the display device further includes an elastomer film 3. The elastomer film 3 is configured to partially or entirely coat the first substrate 2 to apply pressure to the first microparticles 10 and the second microparticles 20, and to better maintain the morphology of the first substrate 2.
In this embodiment, the elastomer film 3 wraps the first substrate 2, and the pressure against the first substrate 2 can be maintained, so that the first substrate 2 better maintains the network chain structure composed of the first particles 10 and the second particles 20. When the first substrate 2 is under a stress (e.g., stretching, retracting), the elastomeric film 3 continues to apply pressure to the first particles 10 and the second particles 20 of the first substrate 2, which better achieves the rearrangement and combination of the first particles 10 and the second particles 20 during the stretching and retracting of the display device, and facilitates better maintenance of the morphology of the first substrate 2. Meanwhile, when the display device is retracted from the stretched state, the retraction of the elastomer film 3 itself can facilitate the retraction of the first substrate 2, and the stretching and retraction of the display device can be more efficiently and conveniently achieved.
In the embodiments of the present disclosure, the thickness and material of the elastomer film are not specifically defined, and can be selected according to the requirements of the stretching capacity and the structural design.
For example, in one embodiment of the present disclosure, the first particles comprise a first body and a plurality of first connections disposed on the first body, and the second particles comprise a second body and a plurality of second connections disposed on the second body, the first connections and the second connections being shaped to match each other to facilitate separation and combination of the first particles and the second particles during stretching and retracting. Illustratively, fig. 2 shows one form of the structure of the first particles 10 and the second particles 20. In this structure, the first particle 10 includes a first body 101 and a first connection portion 102, and the second particle 20 includes a second body 201 and a second connection portion 202.
In this embodiment, the shapes of the first connection portion provided on the first particle and the second connection portion provided on the second particle are matched with each other. Therefore, the first particles and the second particles can be conveniently separated or combined during 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 the number of the first connecting portions and the second connecting portions in the present disclosure are not limited, and may be set according to the actual requirements of the substrate thickness and the stretching amount.
For example, in one embodiment of the present disclosure, the first connecting portions of the first particles are elastic barbs, and the second connecting portions of the second particles are barbs and/or loop structures.
For example, in another embodiment of the present disclosure, as shown in fig. 2, the first connection portion 102 of the first particle 10 is a protrusion, and the second connection portion of the second particle 20 is a groove having a shape matching the first connection portion 102.
For example, in one embodiment of the present disclosure, the shapes of the first body and the second body include a sphere, a polyhedron, a bar, a rod, a triangular pyramid, a torpedo, or an ellipsoid. The shapes of the first body and the second body can be various, and processing is convenient.
For example, in one embodiment of the present disclosure, the size of the first body and/or the second body is less than or equal to 100 microns, such as 90 microns, 70 microns, 50 microns, 30 microns, 20 microns, 15 microns, and the like, to facilitate maximum stretching, while facilitating rearrangement and combination, separation of the first particles 10 and the second particles 20 from each other.
The material of the first particles and the second particles includes metal particles and/or plastic particles wrapped by an insulating material.
For example, in one embodiment of the present disclosure, a display module, illustratively as shown in fig. 1 and 3-10, includes a second substrate and a display functional layer. The second substrate is located on the surface of the first substrate 2 and comprises a plurality of substrate units 30 which are spaced from each other, the display function layer is located on the side of the second substrate, which is far away from the first substrate 2, and comprises a plurality of display units 40 which are spaced from each other, and the display units 40 and the substrate units 30 are arranged in a one-to-one correspondence manner to form the pixel islands 1.
It should be noted that the second substrate being located on the surface of the first substrate may include the second substrate being in direct or indirect contact with the surface of the first substrate.
For example, in one embodiment of the present disclosure, illustratively, as shown in fig. 3-6, the display module is located outside the elastomeric film 3. During the stretching of the display device, the elastomer film 3 continuously applies pressure to the first substrate 2, so that the first microparticles 10 and the second microparticles 20 in the first substrate 2 gradually spread out and combine with each other to maintain the network chain structure, enabling the stretching of the display device.
In this embodiment, the elastomeric film 3 only wraps the first substrate 2, so that during deformation of the first substrate 2, the elastomeric film can provide pressure to the first substrate 2 from either direction of the first substrate 2 to maintain the network chain structure, which can better maintain the morphology of the first substrate. 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, 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, and the first substrate 2 carries the substrate unit 30 through the openings 8.
Next, with reference to fig. 4, 5, and 6, a description will be given of different bonding modes between the display module and the first substrate 2 when the plurality of openings 8 are provided in the portion of the elastomer film 3 located between the first substrate 2 and the display module.
In one example of the present disclosure, as shown in fig. 4, the substrate unit 30 is attached on 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 a gluing manner, and the portion where the first substrate 2 is bonded to the substrate unit 30 is not changed during the stretching process.
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 portions 5 matched in shape to 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. In the initial state, the third connecting portions 5 are combined with the first connecting portions and/or the second connecting portions under the action of the pre-pressure to form a net chain structure. In the stretching or retracting process of the display device, the third connecting portion 5 is movably connected with the first particles 10 and the second particles 20 in the first substrate 2, and the stress of each portion 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 portions provided on the third body, the fourth connection portions match the shape of 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. 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 an embodiment of the present disclosure, as shown in fig. 6, the third particles 6 are smaller in size than the first particles 10 and/or the second particles 20 to provide sufficient contact locations to facilitate maintaining the third particles 6 in combination with the first particles 10 and/or the second particles 20 in the first substrate 2.
For example, in the embodiment of the present disclosure, as illustrated in fig. 7, the elastomer film 3 wraps the display module and the first substrate 2, and the substrate unit 30 is attached to the first substrate 2. Thus, the elastomer film 3 can further prevent 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, another bonding method between the display module and the first substrate 2 when the display module and the first substrate 2 are covered with the elastomer film 3 will be described with reference to fig. 8 and 9. 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 portions 5 that are shape-matched with the first connection portions and/or the second connection portions. As also illustrated in fig. 9, the surface of the substrate unit 30 facing the first substrate 2 is provided with a plurality of third particles 6, the third particles 6 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, and being combinable with the first particles 10 and/or the second particles 20. Therefore, the display module is movably connected with the first substrate 2, in the stretching or retracting process of the display device, the part of the first substrate 2 connected with the display module can change along with the stretching process, and all parts of the first substrate 2 are stressed more uniformly.
In an embodiment of the present disclosure, the third particles 6 are smaller in size than 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 microparticles 10 and the second microparticles 20 after the pre-stress is applied are combined with each other into a network chain structure, constituting the first substrate 2.
For example, in the 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 particles 10, the second particles 20, and the first carrier 7, the first particles 10 and the second particles 20 are pressed to form a network chain structure to function as a skeleton, and the first carrier 7 functions as a matrix. During the retracting process of the display device, the first particles 10 and the second particles 20 carry the first carrier 7 to perform uniform retracting, and the first carrier 7 is beneficial to better maintain the shape of the first substrate 2.
For example, in the embodiment of the present disclosure, exemplarily, as shown in fig. 11, the first substrate 2 further includes the first carrier 7, the first particles 10 and the second particles 20 are accommodated in the first carrier 7, and the elastomer film 3 wraps the first substrate 2. In this embodiment, the elastomer film 3 covers the first substrate 2, and the first substrate is always in a compressed state during the stretching and retracting processes of the display device, which is beneficial to better maintain the shapes of the first carrier 7 and the first substrate 2, and is beneficial to uniform stretching and retracting of the first substrate 2.
Fig. 12 is a schematic view schematically showing a network chain structure formed by the first particles 10 and the second particles 20 combined 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 the display device as described above. As illustrated in fig. 13, the method of manufacturing the display device includes the steps of:
s101: a substrate is provided.
S102: coating the mixture on a substrate: the mixture comprises a first carrier, first particles and second particles, and the mixture can be coated on the module by adopting a coating or silk-screen printing mode. The first carrier contains first particles and 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 gel, such as an optical gel, polydimethylsiloxane (PDMS), 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 stretching ratio requirement and/or the structural design.
S103: pre-pressing the mixture to form a first substrate: and prepressing the mixture on the surface of the substrate to enable the first connecting parts of the first particles and the second connecting parts of the second particles to be in a buckling (or mutually matching) state to form an initial net chain structure.
When the first carrier is a volatizable material, the preparation method as described above 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 in a network structure to form the first substrate. Further, the first microparticles and the second microparticles are microparticles resistant to a polyimide organic solvent.
S104: the display module is arranged 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 function layer positioned on one side of the second substrate, which is far away from the first substrate, wherein the display function 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 mode, and the display units and the substrate units which are corresponding to each other form a pixel island.
S105: and removing the substrate.
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 view illustrating a method for manufacturing a display device according to another embodiment of the present 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 completely coating the first substrate so as to better maintain the network chain structure of the first particles and the second particles, and continuously applying 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 combination of the first particles 10 and the second particles 20 in the stretching and retraction processes of the display device is better realized, and the shape of the first substrate is better maintained. Meanwhile, when the display device is retracted from the stretched state, the retraction of the first substrate can be promoted by the retraction of the elastomer film 3, so that the stretching and retraction of the display device can be realized more efficiently and conveniently.
The above-described manufacturing method may manufacture a display device in which the display module and the first substrate 2 are covered with the elastomer film 3 as illustrated in fig. 7, and the substrate unit 30 is attached to the first substrate 2, or may manufacture 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 may manufacture a display device in which the first substrate 2 includes the first carrier 7 as illustrated in fig. 10.
Fig. 15 is a schematic view of a manufacturing method of a display device according to still another embodiment of the present disclosure. As shown in fig. 15, after the first carrier is evaporated in step S1031, the method for manufacturing the display device first performs step S104 to remove the substrate, then performs step S105 to provide the elastic mold, and then performs step S106 to dispose the display module on the first substrate coated with the elastic film. The manufacturing method can manufacture a display device in which the display module is located outside the elastomer film 3 as shown in fig. 3 and the substrate unit 30 of the second substrate is attached to the side of the elastomer film 3 away from the first substrate 2, and can also manufacture a display device in which the display module is located outside the elastomer film 3, a portion of the elastomer 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 substrate unit 30 through the openings 8 as shown in fig. 4, 5, and 6.
Fig. 16 is a schematic diagram illustrating a method for manufacturing a display device according to still another embodiment of the present disclosure. As shown in fig. 16, after the mixture is pre-pressed in step S103, the method first performs step S104 to remove the substrate, then performs step S105 to provide the elastic mold, and then performs step S106 to dispose the display module on the first substrate coated with the elastic mold. The manufacturing method can manufacture a display device as shown in fig. 11, the first substrate 2 of which further includes a first carrier 7, and the first particles 10 and the second particles 20 are accommodated in the first carrier 7.
It is to be noted that, for clarity, the entire structure of the display device described above is not described. In order to implement the necessary functions of the display device, those skilled in the art may set other structures according to the specific application scenarios, and the embodiments of the present disclosure are not limited thereto.
The above description is meant to be illustrative of the preferred embodiments of the present disclosure and not to be taken as limiting the disclosure, as the invention is intended to cover any modifications, equivalents, etc. which fall within the spirit and scope of the present disclosure.
Claims (10)
1. A display device, comprising:
the display module comprises a plurality of pixel islands which can move relative to each other; and
the display module comprises a first substrate, a second substrate and a plurality of display modules, wherein the first substrate is configured to bear the display modules and comprises a plurality of first particles and a plurality of second particles, and the first particles and the second particles are matched with each other to form a network chain structure;
wherein, when the first substrate is stretched or retracted under force, the first particles and the second particles are detached or combined with each other, and a network chain structure is maintained.
2. The display device according to claim 1, further comprising an elastomer film configured to partially or entirely coat the first substrate.
3. The display device of claim 2,
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 first and second connecting portions are configured to match in shape so as to be detachable and combinable with each other;
preferably, the first connecting portion is an elastic barb and the second connecting portion is a barb or a ring structure, or the first connecting portion is a protrusion and the second connecting portion is a groove matched with the protrusion in shape.
4. The display device according to claim 2 or 3, wherein the display module comprises:
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, away from the first substrate, of the second substrate and comprises a plurality of display units which are spaced from each other;
the display units and the substrate units are arranged in one-to-one correspondence, and the display units and the substrate units which correspond to each other form the pixel islands.
5. The display device according to claim 4, wherein the display module is located outside the elastomer film, and
the substrate unit is attached to a side of the elastomer film facing away from the first substrate.
6. The display device according to claim 4, wherein the display module is located outside the elastomer film, a portion of the elastomer 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,
preferably, the substrate unit is attached to the first substrate; or alternatively
A surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions that are 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; or
A surface of the substrate unit facing the first substrate is provided with a plurality of third particles, the 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; preferably, the third particles have a size smaller than the size of the first particles and/or the second particles.
7. The display device according to claim 4, wherein the elastomer film encapsulates the display module and the first substrate, and
the substrate unit is attached to the first substrate; or
A surface of the substrate unit facing the first substrate is provided with a plurality of third connection portions that are 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; or
A surface of the substrate unit facing the first substrate is provided with a plurality of third particles, the 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 to the first connection portions and/or the second connection portions to be combined with the first particles and/or the second particles; preferably, the third particles have a size smaller than the size of the first particles and/or the second particles.
8. The display device according to claim 1 or 2,
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 microparticles and the second microparticles are contained, the first carrier being a flowable gel.
9. A method for manufacturing a display device according to any one of claims 1 to 8, comprising:
providing a substrate;
coating a mixture on the substrate, the mixture comprising a first support, first particles, and second particles;
prepressing the mixture on the surface of the base to form a first substrate;
arranging the display module on a first substrate;
and removing the substrate.
10. The method according to claim 9,
the first carrier includes a volatizable material, and the forming of the first substrate further includes: after pre-pressing the mixture, the volatizable material is evaporated.
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