CN112489559A - Supporting structure and display device - Google Patents
Supporting structure and display device Download PDFInfo
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- CN112489559A CN112489559A CN202011359906.4A CN202011359906A CN112489559A CN 112489559 A CN112489559 A CN 112489559A CN 202011359906 A CN202011359906 A CN 202011359906A CN 112489559 A CN112489559 A CN 112489559A
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- metal sheet
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- support film
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The embodiment of the invention relates to the technical field of display, and discloses a supporting structure and a display device. In the present invention, the support structure includes: the device comprises a metal sheet and a support film fixedly arranged on the metal sheet; still include the buffering granule, the buffering granule sets up in the supporting film, the buffering granule includes first structure and cover at least the second structure of first structure, the material of first structure includes magnetic material, the material of second structure includes elastic material. The supporting structure and the display device provided by the invention can improve the shock resistance of the display device and can improve the surface hardness of the display device.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a supporting structure and a display device.
Background
Flat Display panels, such as conventional Liquid Crystal Display (LCD) panels, Organic Light Emitting Diode (OLED) panels, and Display panels using Light Emitting Diode (LED) devices, have the advantages of high image quality, power saving, thin body, and wide application range, and are widely used in various consumer electronics products, such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, and the like, and become the mainstream of Display panels. In the prior art, the display device comprises a display panel and a support structure attached to the display panel, and the current support structure is difficult to improve the impact resistance of the display device while ensuring that the surface hardness of the display device meets the requirement. Therefore, there is a need to provide a new support structure to solve the above problems.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a supporting structure and a display device, which can improve the impact resistance of the display device and can improve the surface hardness of the display device.
To solve the above technical problem, an embodiment of the present invention provides a support structure, including:
the device comprises a metal sheet and a support film fixedly arranged on the metal sheet; still include the buffering granule, the buffering granule sets up in the supporting film, the buffering granule includes first structure and cover at least the second structure of first structure, the material of first structure includes magnetic material, the material of second structure includes elastic material.
In addition, the buffer particles are multiple, and the distribution density of the buffer particles in the support film is gradually reduced along the direction of the support film towards the metal sheet.
In addition, the buffer particles are multiple, and the distribution density of the buffer particles in the support film is gradually reduced along the central axis of the support film towards the edge area of the support film.
In addition, the orthographic projection graph of the first structure on the metal sheet is a first graph, and the orthographic projection graph of the second structure on the metal sheet is a second graph; the center of the first graphic coincides with the center of the second graphic. Through the arrangement of the structure, when the buffering particles are subjected to impact force, the stress of the first structure is uniform, so that the first structure is effectively prevented from being damaged due to uneven stress, and the stability of the buffering particles is improved.
In addition, the area ratio of the first pattern to the second pattern is between 0.05 and 0.25. By setting the area ratio, the first structure can generate strong adsorption force on the metal sheet, and the support structure is excellent in impact resistance.
In addition, the buffer particles further comprise a third structure covering the second structure, and the material of the third structure comprises an inorganic material. By providing the third structure, the weather resistance of the buffer particles can be improved.
In addition, the third structure completely covers the second structure, and the first structure not covered by the second structure. By the arrangement of the structure, the weather resistance of the buffering particles is further improved.
In addition, the metal sheet comprises a second metal sheet and a first metal sheet which are arranged in a stacked mode; the supporting film is fixedly arranged on the first metal sheet, and the second metal sheet is provided with a groove. Through set up flutedly on the second sheetmetal, the recess can play stress release's effect when bearing structure buckles to further avoided the sheetmetal to fracture when bearing structure buckles, improved bearing structure's stability.
In addition, the first metal sheet and the second metal sheet are reinforced through a preset mode, and the preset mode comprises any one or more of welding fixation, riveting fixation or mortise and tenon fixation.
The embodiment of the invention also provides a display device, which comprises the support structure, an adhesive layer and a display panel, wherein the adhesive layer is arranged on the adhesive layer; the supporting structure, the adhesive layer and the display panel are sequentially stacked.
Compared with the related art, the embodiment of the invention has the following advantages:
by arranging the metal sheet, the structural strength of the supporting structure is improved, so that the supporting effect on the display panel is enhanced after the supporting structure is attached to the display panel, and the surface hardness of the display device with the supporting structure is improved; on one hand, the material of the first structure comprises a magnetic material, so that the buffer particles have a certain adsorption effect on the metal sheet, the adhesion force between the support film and the metal sheet is improved, the support film and the metal sheet are prevented from being separated when the support structure is bent, and the stability of the support structure is improved; on the other hand, the material of the second structure comprises the elastic material, so that the impact force on the supporting structure can be relieved by the buffer particles, the buffer performance of the supporting structure is improved, and the impact resistance of the display device with the supporting structure is improved.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic structural view of a support structure according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of another support structure according to a first embodiment of the present invention;
FIG. 3 is a side view of a support membrane according to a first embodiment of the invention;
FIG. 4 is a top view of a support membrane according to a first embodiment of the invention;
FIG. 5 is a top view of a buffer particle according to a first embodiment of the invention;
FIG. 6 is a top view of another configuration of buffer particles according to the first embodiment of the present invention;
fig. 7 is a cross-sectional view of a metal sheet according to a first embodiment of the invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
With the reduction of the bending radius of the flexible folding screen, the thickness of the film layer of the flexible display panel is thinner and thinner, so that the hardness of each film layer of the flexible display panel is higher and lower. After the flexible display panel finishes the full-module laminating of the folding screen (namely, the flexible display panel is laminated with the back plate), when a pencil hardness test is carried out, the back plate is reduced in support property because the material of the back plate contains soft materials such as rubber materials and foam cotton and the like and the rubber materials have no support property, so that the surface hardness of the folding screen is reduced sharply, and the requirement of a customer on the surface hardness of the folding screen cannot be met; although reducing the thickness of the rubber material and the foam can improve the support of the back plate, thereby ensuring the surface hardness of the folding screen, such an arrangement may result in a reduction in the impact resistance of the folding screen.
In order to solve the above technical problem, in the embodiments of the present invention, the support structure is a laminated structure of the metal sheet and the support film, and the support film is further provided with the buffer particles in the support film, where the buffer particles at least include a first structure made of a magnetic material and a second structure made of an elastic material covering the first structure, so that the impact resistance of the display device having the support structure can be improved, and the surface hardness of the display device having the support structure can be improved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
The first embodiment of the present invention relates to a supporting structure 100, which is specifically configured as shown in fig. 1, and includes:
the device comprises a metal sheet 1 and a support film 2 fixedly arranged on the metal sheet 1; the film is characterized by further comprising buffer particles 3, wherein the buffer particles 3 are arranged in the support film 2, the buffer particles 3 at least comprise a first structure 31 and a second structure 32 covering the first structure 31, the first structure 31 comprises a magnetic material, and the second structure 32 comprises an elastic material.
Specifically, in the embodiment, the material of the first structure 31 includes an iron-cobalt-nickel alloy, an iron-cadmium-cobalt alloy, an aluminum-nickel-cobalt alloy, and the like, and the material of the first structure 31 is not specifically limited in this embodiment, and only a magnetic material is required; the material of the second structure 32 includes thermoplastic polyurethane elastomer (TPU), thermoplastic elastomer (TPE), and other elastic materials, and this embodiment is not limited to this.
It is understood that the thickness of the buffer layer 3 in this embodiment is between 30 and 300 micrometers. The buffer layer 3 having such a thickness range can improve the buffer performance of the support structure 3 without affecting the light and thin design of the display device having the support structure 100. Preferably, the thickness of the buffer layer 3 is 80 micrometers, 100 micrometers or 150 micrometers, and the buffer layer 3 with such thickness has excellent buffering performance and is thinner.
Compared with the related art, the embodiment of the invention improves the structural strength of the supporting structure 100 by arranging the metal sheet 1, so that the supporting effect on the display panel is enhanced after the supporting structure 100 is attached to the display panel, and the surface hardness of the display device with the supporting structure 100 is improved; by arranging the buffer particles 3 in the support film 2, and the buffer particles 3 at least comprise the first structures 31 and the second structures 32 covering the first structures 31, on one hand, the buffer particles 3 have a certain adsorption effect on the metal sheet 1 due to the fact that the first structures 31 are made of magnetic materials, so that the adhesion force between the support film 2 and the metal sheet 1 is improved, the support film 2 and the metal sheet 1 are prevented from being separated when the support structure 100 is bent, and the stability of the support structure 100 is further improved; on the other hand, since the material of the second structure 32 includes an elastic material, the buffering particles 3 can relieve the impact force applied to the supporting structure 100, so as to improve the buffering performance of the supporting structure 100, and further improve the impact resistance of the display device having the supporting structure 100.
It is worth mentioning that the second structure 32 shown in fig. 1 completely covers the first structure 31, in practical applications, the second structure 32 may also partially cover the first structure 31, as shown in fig. 2.
Referring to fig. 2, the second structure 32 partially covers the first structure 31, and the covering position of the second structure 32 is the upper half portion of the first structure 31 (i.e. the portion far away from the metal sheet 1). Since the display device is often subjected to an impact force in a manner that the support film 2 is directed toward the metal sheet 1, the arrangement of the structure shown in fig. 2 can reduce the production cost of the support structure 100 while ensuring that the impact force applied to the support structure 100 can be alleviated by the buffer particles 3.
The following is a detailed description of the implementation details of the support structure 100 of the present embodiment, and the following is provided only for the convenience of understanding and is not necessary for implementing the present embodiment.
Referring to fig. 3 and 4 together, in the embodiment, there are a plurality of buffer particles 3, and in fig. 3, the distribution density of the buffer particles 3 in the support film 2 gradually decreases along the direction Z of the support film 2 toward the metal sheet 1. Specifically, in order to realize the gradient distribution of the buffer particles 3 in the direction Z, a substrate paste (e.g., PI/CPI/PET/PC/PMMA/PE/PEN/COP) of the support film 2 having the buffer particles 3 may be coated on the metal sheet 1 and baked, and more specifically, a substrate paste of the support film 2 having less buffer particles 3 may be coated on the metal sheet 1, and after the baking is completed, a substrate paste of the support film 2 having more buffer particles 3 than before may be coated, that is, a substrate paste of the support film 2 having buffer particles 3 of different densities may be prepared, coated on the metal sheet 1 layer by layer in the order of the distribution density from low to high, and baked.
In fig. 4, the distribution density of the buffer particles 3 in the support film 2 is gradually decreased from the central axis L of the support film 2 toward the direction X of the edge region of the support film 2. Specifically, in order to realize the gradient distribution of the buffer particles 3 from the central axis L of the support film 2 to the edge of the support film 2 along the direction X, the stirring speed of the buffer particles and the support film substrate slurry can be adjusted, that is, the stirring speed in the central region is low, and the stirring speed in the edge region is high.
It is worth mentioning that the distribution density of the buffer particles 3 is optimally designed such that the distribution density of the buffer particles 3 is reduced in a gradient manner in a direction from the support film 2 to the metal sheet 1 (i.e., Z direction); on a plane parallel to the surface of the support film 2, the distribution density of the buffer particles 3 decreases in a gradient manner from the plane center axis L to the plane edge in the X direction. On one hand, by reducing the distribution density of the buffer particles 3 in the support film 2 and further reducing the density of the corresponding area of the support film, the propagation speed of the stress wave in the corresponding area can be increased, that is, the propagation speed of the stress wave in the Z direction from the display panel to the support structure 100 is increased in a gradient manner, the propagation speed of the stress wave reflected from the support structure 100 to the display panel is decreased in a gradient manner, and the propagation speed of the stress wave from the central axis L of the support structure 100 to the edge thereof is increased in a gradient manner; on the other hand, the buffer particles 3 are distributed in a gradient manner, so that the propagation speed of the stress wave is distributed in a gradient manner, the energy loss of the stress wave is increased, and the impact resistance of the supporting structure 100 is improved.
Referring to fig. 5, the orthographic projection pattern of the first structure 31 on the metal sheet 1 is a first pattern S1, and the orthographic projection pattern of the second structure 32 on the metal sheet 1 is a second pattern S2; the center of the first graphic S1 coincides with the center of the second graphic S2. It should be noted that, by setting the center of the first graph S1 to coincide with the center of the second graph S2, that is, the thickness of the second structure 32 covering each position of the first structure 31 is uniform, so that when the cushioning particle 3 is impacted, the force applied to the first structure 31 is uniform, thereby effectively preventing the first structure 31 from being damaged due to uneven force application, and improving the stability of the cushioning particle 3.
Specifically, the first pattern S1 shown in fig. 5 is a circle, the second pattern S2 is a circle, and the first pattern S1 and the second pattern S2 are concentric circles. In practical applications, the shapes of the first graph S1 and the second graph S2 are not specifically limited in this embodiment, and may also be oval, square, irregular, and the like, and may be set according to actual requirements.
Preferably, the ratio of the area of the first pattern S1 to the area of the second pattern S2 is between 0.05 and 0.25. It is understood that an area of the first pattern S1 being too small relative to an area of the second pattern S2 may make it difficult for the first structure 31 to generate a large adsorption force to the metal sheet 1, and an area of the first pattern S1 being too large relative to an area of the second pattern S2 may result in poor cushioning properties of the cushioning particles 3, thereby resulting in poor impact resistance of the support structure 100. By providing such an area ratio, it is possible to ensure that the first structure 31 generates a strong suction force to the metal sheet 1 and that the support structure 100 is excellent in impact resistance.
Preferably, taking the first pattern S1 and the second pattern S2 as circular shapes as an example, the ratio of the area of the first pattern S1 to the area of the second pattern S2 is 0.1, and the area ratio of the first pattern S1 to the second pattern S2, and the shape of the first pattern and the second pattern make the stability and the impact resistance of the supporting structure 100 better.
Preferably, for example, the first through hole 220 and the second through hole 210 are square, the ratio of the area of the first pattern S1 to the area of the second pattern S2 is 0.15, the ratio of the areas of the first pattern S1 and the second pattern S2 is such that the stability and the impact resistance of the supporting structure 100 are better.
Referring to fig. 6, the buffer particle 3 further includes a third structure 33 covering the second structure 32, and the material of the third structure 33 includes an inorganic material. Specifically, the third structure 33 may be made of an inorganic material such as silicon dioxide, silicon nitride, or aluminum oxide, and the third structure 33 may improve the weather resistance of the buffer particle 3.
The third structure 33 shown in fig. 6 completely covers the second structure 32, and the second structure 32 completely covers the first structure 31, and the weather resistance of the cushioning particles 3 is further improved by the arrangement of such structures.
It is worth mentioning that, as described above, the second structure 32 may only cover the portion of the first structure 31 far away from the metal sheet 1, and in order to ensure the weather resistance of the buffering particles 3, when the buffering particles 3 are such structure, the third structure 33 also covers the portion of the first structure 31 not covered by the second structure 32, so as to prevent the first structure 31 from being exposed to water and oxygen.
Referring to fig. 7, the metal sheet 1 includes a second metal sheet 12 and a first metal sheet 11 which are stacked; the support film 2 is fixed on the first metal sheet 11, and the second metal sheet 12 is provided with a groove 120. It should be noted that, the thin metal sheet may cause poor supporting performance of the supporting structure 100, and the thick metal sheet may be difficult to meet the bending requirement of the supporting structure 100 (i.e. it is easy to break when the supporting structure 100 is bent), and in the prior art, it is difficult to make a metal sheet meeting a moderate thickness, so that the second metal sheet 12 and the first metal sheet 11 are stacked in this embodiment, so that the metal sheet 1 may have better supporting performance, and the metal sheet 1 may also be prevented from breaking when the supporting structure 100 is bent. In addition, by forming the groove 120 on the second metal sheet 12, the groove 120 can release stress when the supporting structure 100 is bent, thereby further preventing the metal sheet 1 from being broken when the supporting structure 100 is bent, and improving the stability of the supporting structure 100.
It should be noted that, as can be seen from the above description, the support film 2 is formed by coating on the first metal sheet 11, therefore, the stability of the combination of the support film 2 and the first metal sheet 11 is better, the support structure 100 is not easy to bend or separate, the first metal sheet 11 and the second metal sheet 12 are usually fixed by welding, etc., resulting in the stability of the combination of the first metal sheet 11 and the second metal sheet 12, which is weaker than the stability of the combination of the support film 2 and the first metal sheet 11, by arranging that the material of the first structure 31 of the buffer particles 3 comprises a magnetic material, the buffer particles 3 have a certain adsorption effect on the second metal sheet 12, thereby, the attaching force between the first metal sheet 11 and the second metal sheet 12 is improved, and the first metal sheet 11 and the second metal sheet 12 are prevented from being separated when the supporting structure 100 is bent, so that the stability of the supporting structure 100 is improved.
It should be noted that, in the embodiment, the position of the groove 120 is an area where the second metal sheet 12 is directly opposite to the bending area (the bending area is a bending area of the display panel 100 attached to the supporting structure 100), and since the bending stress applied to the bending area is the largest when the display panel is bent, the stress applied to the area where the supporting structure 100 is directly opposite to the bending area of the display panel is also the largest, through the arrangement of the structure, the stress release effect of the groove 120 can be the best.
Specifically, the thickness of the first metal sheet 11 in this embodiment is 1 to 30 micrometers; the thickness of the second metal sheet 12 is 10 to 300 micrometers.
It should be noted that the first metal sheet 11 and the second metal sheet 12 are reinforced by a predetermined method, and the predetermined method includes any one or more of welding, riveting, and mortise and tenon. By such a fixing manner, the modulus of the rubber material can be reduced, so as to further improve the supporting performance of the supporting structure 100.
A second embodiment of the present invention relates to a display device including: the supporting structure further comprises an adhesive layer and a display panel; the supporting structure, the adhesive layer and the display panel are sequentially stacked.
The display panel may be a flexible organic light emitting display panel or a non-flexible organic light emitting display panel. The light emitting mode of the organic light emitting display panel may be top emission, bottom emission, or dual emission.
Display panel can also encapsulate in display device, and display device can use in intelligent wearing equipment (like intelligent bracelet, intelligent wrist-watch), also can use in smart mobile phone, panel computer, display equipment.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A support structure, comprising: the device comprises a metal sheet and a support film fixedly arranged on the metal sheet;
still include the buffering granule, the buffering granule sets up in the supporting film, the buffering granule includes first structure and cover at least the second structure of first structure, the material of first structure includes magnetic material, the material of second structure includes elastic material.
2. The support structure of claim 1, wherein the buffer particles are plural, and the distribution density of the buffer particles in the support film is gradually decreased along a direction of the support film toward the metal sheet.
3. The support structure of claim 1, wherein the buffer particles are plural, and a distribution density of the buffer particles in the support film is gradually decreased toward an edge region of the support film along a central axis of the support film.
4. The support structure of claim 1, wherein an orthographic pattern of the first structure on the metal sheet is a first pattern, and an orthographic pattern of the second structure on the metal sheet is a second pattern;
the center of the first graphic coincides with the center of the second graphic.
5. The support structure of claim 4, wherein the area ratio of the first pattern to the second pattern is between 0.05 and 0.25.
6. The support structure of claim 1, wherein the cushioning particles further comprise a third structure overlying the second structure, the third structure comprising an inorganic material.
7. The support structure of claim 6, wherein the third structure encases the second structure.
8. The support structure of claim 1, wherein the metal sheet comprises a second metal sheet and a first metal sheet arranged in a stack;
the supporting film is fixedly arranged on the first metal sheet, and the second metal sheet is provided with a groove.
9. The support structure of claim 8, wherein the first and second metal sheets are reinforced via a predetermined means comprising any one or more of a welding, riveting or mortise and tenon fastening.
10. A display device, comprising: the support structure of any one of claims 1 to 9, further comprising an adhesive layer and a display panel;
the supporting structure, the adhesive layer and the display panel are sequentially stacked.
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| CN202011359906.4A CN112489559B (en) | 2020-11-27 | 2020-11-27 | Supporting structure and display device |
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| CN202011359906.4A CN112489559B (en) | 2020-11-27 | 2020-11-27 | Supporting structure and display device |
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| CN112489559B (en) | 2022-06-07 |
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