CN111710242A - Stretchable display screen and screen body protective film - Google Patents
Stretchable display screen and screen body protective film Download PDFInfo
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- CN111710242A CN111710242A CN202010598601.2A CN202010598601A CN111710242A CN 111710242 A CN111710242 A CN 111710242A CN 202010598601 A CN202010598601 A CN 202010598601A CN 111710242 A CN111710242 A CN 111710242A
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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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a stretchable display screen and a screen body protective film, and solves the problem that the stretchable display screen in the prior art is poor in stretchable performance. The stretchable display screen comprises a flexible substrate, a plurality of pixel units, an elastic island and at least one circuit wiring, wherein at least part of the circuit wiring is arranged on the elastic island, and two ends of the circuit wiring are respectively connected with the two pixel units.
Description
Technical Field
The invention relates to the technical field of display, in particular to a stretchable display screen and a screen body protective film.
Background
Flexible OLEDs refer to flexible organic light emitting diodes that are manufactured on a flexible substrate and run on the flexible substrate. Flexible OLEDs are more flexible, lighter and thinner than traditional rigid OLEDs, enabling foldable, rollable display technologies. With the intensive research on flexible OLED technology, the concept of a tensile display technology is proposed. Stretchable display technology allows the display screen to bend and stretch without affecting the resolution and eventually return to its original shape. The stretchable display technology is one of the important front directions in the next generation display technology.
However, there are places where the stretchability of prior art stretchable display devices needs to be improved.
Disclosure of Invention
In view of this, embodiments of the present invention are directed to providing a stretchable display panel and a panel protection film, so as to solve the problem of poor stretchability of the stretchable display panel in the prior art.
The invention provides in a first aspect a stretchable display screen comprising:
a flexible substrate;
the pixel units are arranged on the flexible substrate at intervals;
an elastic island located in an interval area of the plurality of pixel units;
and at least one circuit wire, wherein at least part of the circuit wire is arranged on the elastic island, and two ends of the circuit wire are respectively connected with the two pixel units.
According to the stretchable display screen provided by the embodiment, the elastic islands are arranged in the interval areas, namely the stretchable areas, of the pixel units, so that the circuit routing lines are at least partially arranged in the elastic islands. Under the condition, the circuit wire is closely contacted with the elastic island to form a whole, so that partial tensile stress of the circuit wire can be released by utilizing the elastic island to improve the tensile property of the circuit wire.
In one embodiment, the cross section of the elastic island in the direction parallel to the flexible substrate is in an axisymmetric pattern; the at least one circuit trace includes an even number of circuit traces that are symmetric about an axis of symmetry of the cross-section. According to the display screen that can stretch that this embodiment provided, because elasticity island and the circuit that sets up in the elasticity island walk line in close contact with and form a whole, walk the line through setting up even number circuit and set up in same elasticity island to this even number circuit walks the line symmetry, and under this kind of condition, the circuit of symmetry each other walks the pulling force collineation that applies on the elasticity island, ensures the balanced atress of elasticity island, avoids producing stress concentration point, improves the reliability.
In one embodiment, at least one circuit trace is disposed on a portion of the resilient island in a layered arrangement. According to the stretchable display screen provided by the embodiment, the area occupied by the elastic islands on the surface of the flexible substrate is favorably reduced, so that the pixel density is ensured to meet the requirement.
In one embodiment, orthographic projections of the at least two circuit traces on the flexible substrate do not overlap. According to the stretchable display screen provided by the embodiment, the mutual interference between at least two circuit wires can be ensured to be small, so that the accuracy of signal transmission in the circuit wires is improved.
In one embodiment, the circuit trace comprises an intermediate section arranged on the elastic island, and a connection section respectively connected with the intermediate section and the pixel unit, wherein the line length of the connection section is smaller than that of the intermediate section;
preferably, the middle segment is curvilinear.
According to the stretchable display screen provided by the embodiment, the tensile stress applied to the connecting segment is relatively small, so that the connecting part of the connecting segment and the pixel unit is not easy to break.
In one embodiment, the intermediate section comprises at least two sub-conductors connected in parallel to each other. According to the stretchable display screen provided by the present embodiment, by implementing the middle section as at least two sub-wires connected in parallel with each other, on the one hand, the resistance value is reduced by the sub-wires connected in parallel; on the other hand, when one of the sub-conductors is damaged, the conductivity of the middle section is not affected, and the reliability is improved.
In one embodiment, the material of the elastic islands is the same as the material of the flexible substrate. According to the stretchable display screen provided by the embodiment, the elastic island and the flexible substrate are similar in material property, the bonding force between the elastic island and the flexible substrate is strong, film layer separation is not easy to occur, and the product reliability is high.
In one embodiment, at least one circuit trace is a fixed signal trace; or at least one circuit wire is a change signal wire. According to the stretchable display screen provided by the embodiment, the fixed signal wiring and the change signal wiring are arranged on different elastic islands respectively by setting, namely the fixed signal wiring and the change signal wiring are separated, so that the interference of the change signal wiring on the fixed signal wiring can be avoided, and the accuracy of respective signal transmission is ensured.
In one embodiment, the pixel cell includes a pixel defining layer forming a peripheral boundary of the pixel cell, an edge of the pixel defining layer proximate to the elastic island being recessed. According to the stretchable display screen provided by the embodiment, the edge of the pixel defining layer close to the elastic island is concave, namely, a part of the edge of the pixel defining layer close to the elastic island is concave towards the inside of the pixel unit, so that an avoiding space is formed for the elastic island. Therefore, the available space of the elastic island can be increased, and the bending resistance of the stretchable display screen is improved.
In a second aspect, the present invention provides a screen protection film for a stretchable display screen provided in any one of the above embodiments, the screen protection film comprising:
the pixel unit comprises a plurality of sub-areas which are arranged at intervals, wherein the plurality of sub-areas are arranged corresponding to the plurality of pixel units;
the heat dissipation area is positioned among the plurality of sub-areas and is arranged corresponding to the elastic island;
and each supporting unit is connected between one sub-area and the heat dissipation area, and the supporting units are arranged corresponding to the circuit wiring.
According to the stretchable display screen provided by the embodiment, protection at different angles can be provided for various structures of the stretchable region of the stretchable display screen in a targeted manner, so that the reliability of the stretchable display screen is improved to the maximum extent.
According to the stretchable display screen and the screen body protective film provided by the embodiment of the invention, the elastic islands are arranged in the interval areas, namely the stretchable areas, of the pixel units, so that the circuit routing is arranged in the elastic islands. Under the condition, the circuit wire is closely contacted with the elastic island to form a whole, so that partial tensile stress of the circuit wire can be released by utilizing the elastic island to improve the tensile property of the circuit wire.
Drawings
Fig. 1 is a schematic structural diagram of a stretchable display screen according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a stretchable display screen according to a second embodiment of the present invention.
Fig. 3 is a top view of a circuit trace according to an embodiment of the invention.
FIG. 4 is a schematic partial cross-sectional view of the stretchable display panel shown in FIG. 2 taken along line AB according to a second embodiment of the present invention.
FIG. 5 is a schematic partial cross-sectional view of the stretchable display panel shown in FIG. 2 taken along line AB according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a stretchable display screen according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a screen protection film according to an embodiment of the present invention.
Detailed Description
As is known in the art, there are places where the performance of prior art stretchable displays needs to be improved.
The inventor has found through long-term research and analysis that the stretchable display screen 10 mainly has an island-bridge structure, and referring to the schematic structural diagram of the stretchable display screen provided in the first embodiment of the present invention shown in fig. 1, a plurality of pixel units 12 are provided on a flexible substrate 11, the plurality of pixel units 12 are used as islands, adjacent pixel units 12 are connected by using circuit traces 13, and the circuit traces 13 are used as bridges.
For the stretchable display panel shown in fig. 1, since the pixel unit 12 has a circuit structure partially, it is usually designed as a non-stretchable region in order to avoid damage to the circuit structure. Accordingly, the regions between adjacent pixel cells 12 are designed as stretchable regions to achieve the stretchable property of the stretchable display screen. However, for the stretchable region, the circuit traces 13 are located on the flexible substrate 11, and since the elasticity of the circuit traces 13 is much smaller than that of the flexible substrate 11, the elasticity of the circuit traces 13 greatly limits the stretchable performance of the stretchable display screen.
In order to solve the above problems, an embodiment of the invention provides a stretchable display screen, in which an elastic island is disposed in a stretchable region, so that circuit traces are disposed on the elastic island. Under the condition, the circuit wire is closely contacted with the elastic island to form a whole, so that partial tensile stress of the circuit wire can be released by utilizing the elastic island to improve the tensile property of the circuit wire.
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 are described in detail below 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.
Fig. 2 is a schematic structural diagram of a stretchable display screen according to a second embodiment of the present invention. The following description will take a repeating unit in the stretchable display panel as an example to illustrate a specific structure of the stretchable display panel. As shown in fig. 2, the stretchable display screen 20 includes a flexible substrate 21, a plurality of pixel cells 22, elastic islands 24, and at least one circuit trace 23. The pixel units 22 are disposed on the flexible substrate 21 at intervals, the elastic island 24 is located in the interval area of the pixel units 22, the circuit trace 23 is disposed at least partially on the elastic island 24, and two ends of the circuit trace 23 are connected to the two pixel units 22 respectively.
It is understood that the circuit trace 23 is at least partially disposed on the resilient island 24. That is, the circuit trace 23 at least partially penetrates the interior of the elastic island 24, and/or the circuit trace 23 is at least partially disposed on the surface of the elastic island 24.
The flexible substrate 21 has a stretchable property and can also be restored to its original shape by compression or self-recovery after stretching. The material of the flexible substrate 21 is a material having elasticity and ductility, such as polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polyimide, or the like. The flexible substrate 21 may also be an ultra-thin glass substrate having a thickness of less than or equal to 50 microns.
The material of the elastic islands 24 is selected to be more elastic or equal to that of the flexible substrate 21. In one embodiment, the material from which the elastic islands 24 are formed is an organic material. For example, the material of the elastic islands 24 is the same as that of the flexible substrate 21. In this case, since the material properties of the elastic island 24 and the flexible substrate 21 are similar, the bonding force between the two is strong, film layer separation is not easy to occur, and the product reliability is high.
The pixel unit 22 is for displaying light emission, and includes a driving circuit and a light emitting unit electrically connected. In the present embodiment, the plurality of pixel units 22 are arranged in an array on the flexible substrate 21, and the plurality of pixel units 22 include a plurality of rows of pixel units 22 arranged along the X direction and a plurality of columns of pixel units 22 arranged along the Y direction. A plurality of circuit traces 23 connected to a row of pixel units 22 are electrically connected in sequence through the pixel units 22 to form a conductive path, such as a data line; the circuit traces 23 connecting a column of pixel units 22 are electrically connected in sequence through the pixel units 22 to form a conductive path, such as a scan line.
The circuit trace 23 material includes aluminum neodymium alloy, silver nanowire, titanium aluminum titanium and other composite materials.
It is understood that the shape of the circuit trace 23 may include circular arcs (e.g., major arcs, minor arcs), shapes of "S" shaped curves, etc. besides the shape of the broken line in fig. 2, and may be specifically set according to actual needs, and is not specifically limited herein.
A buffer layer (not shown) may be further disposed on a side of the flexible substrate 21 adjacent to the pixel unit 22. The buffer layer is beneficial to preventing ions in the flexible substrate 21 from diffusing into the pixel unit 22, and is beneficial to improving the adhesion between the flexible substrate 21 and the pixel unit 22. The buffer layer may be made of any one of an inorganic material including silicon oxide, silicon nitride, aluminum oxide, aluminum nitride, titanium oxide, or titanium nitride, or an organic material including polyimide or a polyester-based material. Because the elasticity of the inorganic material is generally relatively low, in order to avoid the buffer layer from limiting the stretching performance of the stretchable display screen, when the material of the buffer layer is the inorganic material, the buffer layer is only arranged between the pixel units and the flexible substrate, that is, the buffer layer comprises a plurality of buffer units arranged at intervals, and the plurality of buffer units correspond to the plurality of pixel units one to one.
It should be understood that the shape of the elastic island is not limited in this embodiment, and may be, for example, a cylinder, a truncated cone, a cube, or the like.
According to the stretchable display screen provided by the embodiment, the elastic islands are arranged in the stretchable area, so that the circuit traces are arranged on the elastic islands. Under the condition, the circuit wire is closely contacted with the elastic island to form a whole, so that partial tensile stress of the circuit wire can be released by utilizing the elastic island to improve the tensile property of the circuit wire. Meanwhile, compared with the performance between the circuit wiring and the flexible substrate, the performance between the elastic island and the flexible substrate is more similar, so that the bonding force between the elastic island and the flexible substrate is stronger, and the film layer separation is not easy to occur.
In one embodiment, referring to fig. 2, the cross-section of the elastic islands 24 is in an axisymmetric pattern in a direction parallel to the flexible substrate 21. The at least one circuit trace 23 comprises an even number of circuit traces 23, the even number of circuit traces 23 being symmetric about an axis of symmetry of the cross-section of the resilient island 24.
For example, as shown in fig. 2, the elastic island 24 is located at the center of four adjacent pixel cells 22. The elastic islands 24 are cylinders whose cross-section in a direction parallel to the flexible substrate 21 is circular. Each pixel unit 22 is provided with an adjacent pixel unit in the up, down, left and right directions, and the pixel unit 22 is electrically connected to the four adjacent pixel units 22 through four circuit traces 23. In this case, as shown in fig. 2, the number of the circuit traces 23 disposed on the same elastic island 24 is two or four, and the plurality of circuit traces 23 disposed on the same elastic island 24 are symmetrical with respect to the cross section of the elastic island 24.
According to the display screen that can stretch that this embodiment provided, because elasticity island and the circuit that sets up in elasticity island walk line in close contact with and form a whole, walk the line through setting up even number circuit and set up in same elasticity island to this even number circuit walks the line symmetry, and under this kind of condition, two circuit that are symmetrical each other walk the pulling force collineation that the line applied to elasticity island, ensure the balanced atress of elasticity island, avoid producing stress concentration point, improve the reliability.
In one embodiment, as shown in fig. 2, the circuit trace 23 includes an intermediate segment 231 disposed on the elastic island 24, and connection segments 232 respectively connected to the intermediate segment 231 and the pixel units 22, wherein a line length of the connection segments 232 is smaller than a line length of the intermediate segment 232. Theoretically, it is better that the line length of the connection section 232 is smaller relative to the line length of the intermediate section 232, so that the connection section 232 is subjected to a relatively small tensile stress, thereby ensuring that the connection of the connection section 232 and the pixel unit 22 is not easily broken.
Further, in an embodiment, as shown in fig. 3, a top view of a circuit trace provided by an embodiment of the invention is shown. As shown in fig. 3, the intermediate segment 231 of the circuit trace 23 includes at least two sub-wires 2320 connected in parallel with each other. For example, the intermediate section 231 is implemented as a mesh. The longer the line length of the intermediate section 231, the less likely the intermediate section 231 is to break, however, as the line length of the intermediate section 231 increases, the resistance value of the circuit trace 23 between the adjacent pixel cells 22 increases, which causes the RC delay problem to be significant. In this case, by the intermediate section 231 being embodied as two partial lines which are connected in parallel with one another, on the one hand, the resistance value is reduced by the parallel partial lines; on the other hand, when one of the sub-conductors is damaged, the conductivity of the intermediate section 231 is not affected, and the reliability is improved.
Further, in one embodiment, as shown in FIG. 2, the mid-section 231 is planar curvilinear or spatially curvilinear. Such as sinusoidal, spiral, arc, etc. By forming the middle section 231 in a curved shape, the bending resistance of the middle section 231 can be further improved, and the stretchability of the stretchable display panel can be further improved.
In one embodiment, as shown in FIG. 2, pixel cell 22 includes a pixel defining layer forming its peripheral boundary, the edge of the pixel defining layer adjacent to the elastic island being recessed. Recessing the edges of the pixel defining layer adjacent to the elastic island 24 means that a portion of the edges 220 of the pixel defining layer adjacent to the elastic island 24 are recessed inward of the pixel cell 22 to form an escape space for the elastic island. Therefore, the available space of the elastic island can be increased, and the bending resistance of the stretchable display screen is improved.
FIG. 4 is a schematic partial cross-sectional view of the stretchable display panel shown in FIG. 2 taken along line AB according to a second embodiment of the present invention. As shown in fig. 4, orthographic projections of the at least two circuit traces 33 on the flexible substrate 31 do not overlap. Thus, the mutual interference between the at least two circuit traces 33 can be ensured to be small, thereby improving the accuracy of the transmission signals in the at least two circuit traces 33. Preferably, orthographic projections of the circuit traces 33 on the flexible substrate 31 do not overlap, that is, orthographic projections of all the circuit traces 33 on the flexible substrate 31 do not overlap, so that the accuracy of signal transmission of the circuit traces 33 can be further improved.
FIG. 5 is a schematic partial cross-sectional view of the stretchable display panel shown in FIG. 2 taken along line AB according to a second embodiment of the present invention. As shown in fig. 5, at least one circuit trace is disposed on a portion of the elastic island 44 in a layered manner. That is, when at least one circuit trace includes one circuit trace, the portions of the one circuit trace disposed on the elastic island 44 may be disposed on the same layer in the elastic island 44, or different sections of the portions of the same circuit trace disposed on the elastic island 44 may be disposed on different layers in the elastic island 44. When the at least one circuit trace includes a plurality of circuit traces, the portions of the plurality of circuit traces disposed on the elastic island 44 may all be disposed on the same layer, or may be disposed in layers. For each of the plurality of circuit traces, the portion of the circuit trace disposed on the elastic island 44 may be disposed on the same layer in the elastic island 44, or different sections of the portion of the circuit trace disposed on the elastic island 44 may be disposed on different layers in the elastic island 44. Two adjacent layers of circuit wires are spaced through the insulating layer, and the thickness of the insulating layer is 50-500 nanometers.
For example, in the stretchable display screen shown in fig. 5, the at least one circuit trace includes two circuit traces, that is, a first circuit trace 431 and a second circuit trace 432, the first circuit trace 431 is disposed on the elastic island 44, and a portion of the first circuit trace 431 is disposed on the bottom layer of the elastic island 44, the second circuit trace 432 is disposed on the elastic island 44, and a portion of the second circuit trace is disposed on the top layer of the elastic island 44, and a portion of the second circuit trace is disposed on the bottom layer of the elastic island 44, and the first circuit trace 431 and the second circuit trace 432 are disposed in an insulating manner.
The layering is beneficial to reduce the area occupied by the elastic islands 44 on the surface of the flexible substrate 41 to ensure that the pixel density meets the requirement.
Fig. 6 is a schematic structural diagram of a stretchable display screen according to a third embodiment of the present invention. As shown in fig. 6, the stretchable display screen 50 is different from the stretchable display screen 20 shown in fig. 2 only in that at least one circuit trace disposed in the same elastic island in the stretchable display screen 50 is a fixed signal trace or a variable signal trace. That is, the fixed signal traces and the variable signal traces in the stretchable display screen 50 are respectively disposed on different elastic islands.
Specifically, as shown in fig. 6, the plurality of elastic islands in the stretchable display screen 50 are arranged in an array. The elastic islands arranged in an array include a first elastic island 541 and a second elastic island 542, the first elastic island 541 and the second elastic island 542 are alternately arranged in a row of elastic islands, and the first elastic island 541 and the second elastic island 542 are also alternately arranged in a column of elastic islands. Disposed on the first elastic island 541 is a fixed signal trace 531, and disposed on the second elastic island 542 is a variable signal trace 532.
The fixed signal trace 531 refers to a circuit trace for transmitting a constant signal, such as a power voltage connected to the anode of the light emitting unit or a reference voltage connected to the cathode of the light emitting unit. The variation signal trace 532 is a circuit trace for transmitting variation signals, such as a scan signal connected to a gate of a thin film transistor in the pixel driving circuit or a data signal connected to a source of the thin film transistor.
According to the stretchable display screen provided by the embodiment, the fixed signal wiring and the change signal wiring are arranged on different elastic islands respectively by setting, namely the fixed signal wiring and the change signal wiring are separated, so that the interference of the change signal wiring on the fixed signal wiring can be avoided, and the accuracy of respective signal transmission is ensured.
The embodiment of the invention also provides a screen body protective film which can be used for the stretchable display screen provided by any one of the embodiments. Fig. 7 is a schematic structural diagram of a screen protection film according to an embodiment of the present invention. As shown in fig. 7, the panel protection film 70 includes a plurality of sub-regions 71 arranged at intervals, and a heat dissipation region 72 located between the plurality of sub-regions 71; and at least two supporting units 73, each supporting unit 73 being connected between one of the sub-areas 71 and the heat dissipation area 72.
As shown in fig. 7 and 2, the screen protection film 70 is attached to the surface of the stretchable display screen 20 away from the flexible substrate 21. The sub-regions 71 in the panel protection film 70 correspond to the pixel units 22 in the stretchable display panel 20, the heat dissipation regions 72 in the panel protection film 70 correspond to the elastic islands 24 in the stretchable display panel 20, and the support units 73 in the panel protection film 70 correspond to the circuit traces 23 in the stretchable display panel 20, where the correspondence mentioned here refers to the orthographic projection of two structures corresponding to each other on the flexible substrate 21 being in an overlapping relationship or a covering and covering relationship.
The sub-region 71 is an elastic material for providing protection for the pixel unit. The supporting unit 73 is a strip structure, has high toughness, and is used to provide protection for circuit traces thereunder, and it can be fixed with the heat dissipation area 72 and/or the sub-area 71 by means of adhesion. The heat dissipation region 72 may be a heat dissipation material such as graphene, resin, foam, or the like.
It should be understood that the specific structure of the panel protection film 70 depends on the structure of the stretchable display panel, and specific details not mentioned in the present embodiment can be accurately and unambiguously obtained according to the structure of the stretchable display panel, and will not be described herein.
According to the screen body protection film provided by the embodiment, protection at different angles can be provided for various structures of the stretchable area of the stretchable display screen in a targeted manner, so that the reliability of the stretchable display screen is improved to the maximum extent.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It should also be noted that in the products of the present application, the components may be disassembled and/or reassembled. These decompositions and/or recombinations are to be considered as equivalents of the present application. In addition, the qualifiers "first" and "second" used in the description of the embodiment of the present invention are only used to clearly illustrate the technical solutions, and are not used to limit the protection scope of the present invention.
Claims (10)
1. A stretchable display screen, comprising:
a flexible substrate;
the pixel units are arranged on the flexible substrate at intervals;
an elastic island located within an interval area of the plurality of pixel cells;
and at least one circuit wire, wherein at least part of the circuit wire is arranged on the elastic island, and two ends of the circuit wire are respectively connected with the two pixel units.
2. A stretchable display according to claim 1, wherein the cross-section of the elastic islands in a direction parallel to the flexible substrate is in an axisymmetric pattern; the at least one circuit trace comprises an even number of circuit traces that are symmetric about an axis of symmetry of the cross-section.
3. A stretchable display screen according to claim 1, wherein the at least one circuit trace is disposed in partial layers of the elastic island.
4. A stretchable display screen according to claim 1, wherein orthographic projections of at least two of the circuit traces on the flexible substrate do not overlap.
5. A stretchable display screen according to claim 1, wherein the circuit trace includes an intermediate section disposed on the elastic island, and connection sections respectively connected to the intermediate section and the pixel units, and a line length of the connection sections is smaller than a line length of the intermediate section;
preferably, the intermediate section is curvilinear.
6. A stretchable display according to claim 5, wherein the intermediate section comprises at least two sub-wires connected in parallel with each other.
7. A stretchable display according to claim 1, wherein the material of the elastic islands and the material of the flexible substrate are the same.
8. The stretchable display screen according to claim 1, wherein the at least one circuit trace is a fixed signal trace; or the at least one circuit wire is a variable signal wire.
9. A stretchable display screen according to any of claims 1 to 8, wherein the pixel cells comprise a pixel definition layer forming a peripheral boundary of the pixel cells, the edges of the pixel definition layer adjacent to the elastic islands being recessed.
10. A panel protective film for use in the stretchable display panel of any one of claims 1 to 9, the panel protective film comprising:
a plurality of sub-regions arranged at intervals, the plurality of sub-regions being arranged corresponding to the plurality of pixel units;
the heat dissipation area is positioned among the plurality of sub-areas and is arranged corresponding to the elastic island;
and each supporting unit is connected between one sub-area and the heat dissipation area, and the supporting units are arranged corresponding to the circuit wires.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010598601.2A CN111710242A (en) | 2020-06-28 | 2020-06-28 | Stretchable display screen and screen body protective film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010598601.2A CN111710242A (en) | 2020-06-28 | 2020-06-28 | Stretchable display screen and screen body protective film |
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| CN111710242A true CN111710242A (en) | 2020-09-25 |
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| CN202010598601.2A Pending CN111710242A (en) | 2020-06-28 | 2020-06-28 | Stretchable display screen and screen body protective film |
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Application publication date: 20200925 |
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