CN115148104B - Stretchable display panel and stretchable display device - Google Patents
Stretchable display panel and stretchable display device Download PDFInfo
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- CN115148104B CN115148104B CN202210757766.9A CN202210757766A CN115148104B CN 115148104 B CN115148104 B CN 115148104B CN 202210757766 A CN202210757766 A CN 202210757766A CN 115148104 B CN115148104 B CN 115148104B
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- 229920001971 elastomer Polymers 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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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
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Abstract
The embodiment of the application provides a stretchable display panel and a stretchable display device, wherein the stretchable display panel comprises: a plurality of light emitting devices, a plurality of first reflecting layer groups and a plurality of second reflecting layer groups; the first reflecting layer group and the second reflecting layer group are positioned on the light-emitting surface side of the film layer where the light-emitting device is positioned and respectively comprise a plurality of first reflecting sheets and a plurality of second reflecting sheets, the inclination angles of the first reflecting sheets and the second reflecting sheets are different in a first stretching state and a second stretching state of the display panel, and the included angle between the first reflecting sheets and the first direction is larger than the included angle between the second reflecting sheets and the first direction in the same stretching state; therefore, when the stretchable display panel is in different stretching states, the reflective sheet capable of reflecting the large-angle light rays emitted by the stretchable display panel exists.
Description
[ Field of technology ]
The present application relates to the field of display technologies, and in particular, to a stretchable display panel and a stretchable display device.
[ Background Art ]
In recent years, with the continuous development of flexible display technology, the stretchable display panel is gradually applied to the fields of wearable equipment, internet of things equipment, artificial intelligent equipment and the like, and brand new viewing and using experience is brought to users.
In the prior art, stretchable display panels include pixel islands and bridges connecting the pixel islands. The adjacent two pixel islands are connected through a bridge, the pixel islands are used for bearing display function devices, and the bridge is used for bearing signal wires for providing signals for the display function devices. However, as a stretchable display panel, when the screen is stretched, the distance between pixels increases, and the resolution decreases, so that the graininess of the display panel increases, and the display performance of the stretchable display panel is affected, thereby resulting in poor user experience.
[ MEANS FOR SOLVING PROBLEMS ]
In view of the above, the embodiments of the application provide a stretchable display panel and a stretchable display device.
In a first aspect, the present application provides a stretchable display panel comprising:
a plurality of light emitting devices;
the first reflection layer groups are positioned on one side of the light emitting surface of the film layer where the light emitting device is positioned and comprise a plurality of first reflection sheets; the inclination angle of the first reflecting sheet is different in a first stretching state and a second stretching state of the display panel;
the plurality of second reflection layer groups are positioned on one side of the light emitting surface of the film layer where the light emitting device is positioned and comprise a plurality of second reflection sheets; the inclination angle of the second reflecting sheet is different in the first stretching state and the second stretching state of the display panel;
wherein the first reflection layer group and the second reflection layer group are surrounded on the periphery of the light-emitting device;
The first reflecting layer group and the second reflecting layer group which surround the same light emitting device are arranged on one side of the first reflecting layer group away from the light emitting device, and the included angle between the first reflecting sheet and the first direction is larger than the included angle between the second reflecting sheet and the first direction in the same stretching state; the first direction is perpendicular to a plane in which the light emitting device is located.
In one implementation manner of the first aspect, the stretchable display panel further includes an elastomer, and the elastomer wraps the first reflection layer group and the second reflection layer group.
In one implementation of the first aspect, the elastomer further encapsulates the light emitting device.
In one implementation of the first aspect, the first reflective sheet is at least one of a metallized foil, a metallized copper sheet; the second reflector plate is at least one of a metal-plated foil and a metal-plated copper sheet.
In one implementation manner of the first aspect, the number of the first reflection sheets in the first reflection layer group is the same as the number of the second reflection sheets in the second reflection layer group, and an area of the first reflection sheets in the first reflection layer group is smaller than an area of the second reflection sheets in the second reflection layer group.
In one implementation manner of the first aspect, the number of the first reflection sheets in the first reflection layer group is smaller than the number of the second reflection sheets in the second reflection layer group, and an area of the first reflection sheets in the first reflection layer group is the same as an area of the second reflection sheets in the second reflection layer group.
In one implementation manner of the first aspect, along a thickness direction of the stretchable display panel, an orthographic projection of the light emitting device is circular, an orthographic projection of the first reflection layer group is a first ring shape, and an orthographic projection of the second reflection layer group is a second ring shape.
In one implementation manner of the first aspect, a center of the first ring shape, a center of the second ring shape, and a center of the circle coincide.
In one implementation manner of the first aspect, when the stretchable display panel is in an unstretched state, a distance between the first reflection layer group and the second reflection layer group surrounding the same light emitting device is d1, and d1 is 20 μm and d1 is 100 μm.
In an implementation manner of the first aspect, the stretchable display panel further includes a third reflection layer group surrounding the light emitting device, where the third reflection layer group is located on a light emitting surface side of the film layer where the light emitting device is located and includes a plurality of third reflection sheets; the inclination angle of the third reflection sheet is different in the first stretching state and the second stretching state of the display panel;
And the included angle between the third reflecting sheet and the first direction in the third reflecting layer group is smaller than the included angle between the second reflecting sheet and the first direction in the second reflecting layer group.
In an implementation manner of the first aspect, in the same stretching state, an angle difference between the third reflective sheet and the second reflective sheet and the first direction is smaller than an angle difference between the second reflective sheet and the first direction.
In a second aspect, the present application provides a stretchable display device comprising a stretchable display panel as provided in the first aspect.
According to the stretchable display panel and the stretchable display device provided by the embodiment of the application, the split-ring reflection scheme is established by arranging the multi-ring reflection layer group around the light-emitting device and arranging the plurality of reflection sheets in the reflection layer group. When the stretchable display device is in different stretching states, the large-angle light emitted by the light emitting device can be reflected by the reflecting sheets in different reflecting layer groups and then used for displaying, so that the visual effect problem of the display device in the stretching process is improved, the display performance of the stretchable display device is improved, and the normal display of the stretchable display device is realized.
[ Description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic plan view of a stretchable display panel according to an embodiment of the present invention;
Fig. 2 is a schematic cross-sectional view of a stretchable display panel in a first stretched state according to an embodiment of the present invention;
Fig. 3 is a schematic cross-sectional view of a stretchable display panel in a second stretched state according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of a stretchable display panel according to an embodiment of the present invention;
FIG. 5 is a schematic plan view of a stretchable display panel according to an embodiment of the present invention;
Fig. 6 is a schematic cross-sectional view of a stretchable display panel in a first stretched state according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a stretchable display panel in a second stretched state according to an embodiment of the present invention;
Fig. 8 is a schematic cross-sectional view of a stretchable display panel in a third stretched state according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a stretchable display device according to an embodiment of the invention.
[ Detailed description ] of the invention
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the present specification, it is to be understood that the terms "substantially," "approximately," "about," "approximately," "substantially," and the like as used in the claims and embodiments of the application are intended to be inclusive of a reasonable process operation or tolerance and not an exact value.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe the reflective layer groups, stretched states, reflective sheets, annular, etc., these directions, etc. should not be limited to these terms. These terms are only used to distinguish one direction or the like from another. For example, a first group of reflection packets may also be referred to as a second group of reflection packets, and similarly, a second group of reflection packets may also be referred to as a first group of reflection packets without departing from the scope of embodiments of the present application.
The applicant has provided a solution to the problems existing in the prior art by intensive studies.
Fig. 1 is a schematic plan view of a stretchable display panel according to an embodiment of the present invention, fig. 2 is a schematic cross-sectional structure of the stretchable display panel according to an embodiment of the present invention in a first stretched state, and fig. 3 is a schematic cross-sectional structure of the stretchable display panel according to an embodiment of the present invention in a second stretched state.
As shown in fig. 1 to 3, a stretchable display panel 100 according to an embodiment of the present invention includes: a plurality of light emitting devices 10, a plurality of first reflection layer groups 01, and a plurality of second reflection layer groups 02.
The first reflection layer group 01 is located at the light-emitting surface side of the film layer where the light-emitting device 10 is located and comprises a plurality of first reflection sheets 11, and the second reflection layer group 02 is located at the light-emitting surface side of the film layer where the light-emitting device 10 is located and comprises a plurality of second reflection sheets 12. The first reflecting layer group 01 and the second reflecting layer group 02 may be used to reflect at least a portion of light emitted by the light emitting device 10.
As shown in fig. 2 and 3, the first reflection sheet 11 in the first reflection layer group 01 has a different inclination angle between the first stretched state and the second stretched state of the stretchable display panel 100. For example, as shown in fig. 2 and 3, when the stretchable display panel 100 is in the first stretched state, the angle between the first reflective sheet 11 and the first direction Y is α -tilt; when the stretchable display panel 100 is in the second stretched state, the angle between the first reflective sheet 11 and the first direction Y is α2, α1+noteα2. Wherein the first direction Y is a thickness direction of the stretchable display panel.
As shown in fig. 2 and 3, the inclination angle of the second reflection sheet 12 in the second reflection layer group 02 is different between the first stretched state and the second stretched state of the stretchable display panel 100. For example, as shown in fig. 2 and 3, when the stretchable display panel 100 is in the first stretched state, the angle between the second reflective sheet 12 and the first direction Y is α3; when the stretchable display panel 100 is in the second stretched state, the angle between the second reflective sheet 12 and the first direction Y is α4, α3+.α4.
Wherein the distance between adjacent light emitting devices 10 in the display panel 100 is different in the first stretched state and in the second stretched state. For example, the distance between adjacent light emitting devices 10 in the display panel 100 is smaller in the first stretched state and larger in the second stretched state.
In this embodiment, as shown in fig. 1, the light emitting device 10 is surrounded by a first reflection layer group 01 and a second reflection layer group 02. Of the first and second reflection layer groups 01 and 02 surrounding the same light emitting device 10, the second reflection layer group 02 is located on a side of the first reflection layer group 01 remote from the light emitting device 10. I.e. the second reflective sheet 12 is further away from the light emitting device 10 than the first reflective sheet 11. Since the reflective sheet is disposed around the light emitting device 10, the large-angle light emitted from the light emitting device 10 can be reflected by the reflective sheet to be emitted as the emitted light of the stretchable display panel 100, thereby increasing the final emitting area of the light emitted from the light emitting device 10.
As shown in fig. 2 and 3, in the same stretched state, the angle between the first reflective sheet 11 and the first direction Y is larger than the angle between the second reflective sheet 12 and the first direction Y; the first direction Y is perpendicular to the plane in which the light emitting device 10 is located. That is, when the stretchable display panel 100 is in the same stretched state, the angle between the second reflection sheet 12 farther from the light emitting device 10 and the first direction Y is smaller, that is, α3 < α1, α4 < α2.
It should be noted that, the stretching will make the first reflective sheet 11 in the first reflective layer group 01 more horizontal, that is, the stretching will make the angle between the first reflective sheet 11 in the first reflective layer group 01 and the first direction Y become larger. Likewise, stretching will make the second reflection sheet 12 in the second reflection layer group 02 more horizontal, i.e., stretching will make the angle between the second reflection sheet 12 in the second reflection layer group 02 and the first direction Y larger.
When the stretching degree of the stretchable display panel 100 is greater, the distance between the adjacent light emitting devices 10 becomes greater, and the light emitting area of the sub-pixel corresponding to each light emitting device 10 should be further increased in order to eliminate the displayed graininess. Therefore, the reflection sheet 12 farther from the light emitting device 10 is required to reflect the light of a large angle emitted from the light emitting device 10 to increase the final exit area of the light emitted from the light emitting device 10.
In the embodiment of the present application, the angle between the reflective sheet farther from the light emitting device 10 and the first direction Y is set smaller, so that the stretching degree of the stretchable display panel 100 is greater, and the tilt angle of the reflective sheet farther can better reflect the large-angle light emitted by the light emitting device 10.
Since the first reflective sheet 11 and the second reflective sheet 12 have different inclination angles and thus have different reflection effects on the light emitted from the light emitting device 10, the first reflective sheet 11 and the second reflective sheet 12 may respectively play a major role in reflecting the light emitted from the light emitting device 10 when the stretchable display panel 100 is in different stretching states. Therefore, when the stretchable display panel 100 is in different stretching states, the reflective sheets capable of reflecting the emitted large-angle light rays exist, and the problem that the stretchable display panel 100 has no visual effect difference in different stretching states is solved. Hereinafter, an example will be described with reference to fig. 2 and 3.
When the stretchable display panel 100 is in the first stretched state as shown in fig. 2, an angle α1 between the first reflective sheet 11 in the first reflective layer group 01 and the first direction Y is larger than an angle α3 between the second reflective sheet 12 in the second reflective layer group 02 and the first direction Y. In this state, the large-angle light L1 emitted from the light emitting device 10 is reflected by the first reflection sheet 11, and is emitted as the emitted light of the stretchable display panel 100, increasing the final emitting area of the light emitted from the light emitting device 10, and thus enabling the stretchable display panel 100 to display normally.
When the stretchable display panel 100 is in the second stretched state as shown in fig. 3, the angles between the first reflective sheet 11, the second reflective sheet 12 and the first direction Y are larger than the angles between the first reflective sheet 11, the second reflective sheet 12 and the first direction Y in the first stretched state, and the angle α2 between the first reflective sheet 11 and the first direction Y in the second stretched state is larger than the angle α4 between the second reflective sheet 12 and the first direction Y. In this state, the first reflective sheet 11 tends to be horizontal, the reflective power of the large-angle light L1 emitted from the light emitting device 10 is reduced, the large-angle light L1 emitted from the light emitting device 10 is reflected by the second reflective sheet 12, and is emitted as the emitted light of the stretchable display panel 100, increasing the final emitting area of the light emitted from the light emitting device 10, and thus enabling the stretchable display panel 100 to display normally.
The inventor has found through analysis of the stretchable display panel 100 and the operation process thereof that after the stretchable display panel 100 is stretched, the pixel pitch may increase, gaps may exist between the light emitting devices 10, and gaps may exist between the display units, so that the pixel boundaries of the stretchable display panel 100 have a granular feel during display, and the display performance of the stretchable display panel 100 is seriously affected.
Based on the above-mentioned problems and analysis of the cause of the above-mentioned problems, in the present embodiment, a first reflection group 01 and a second reflection group 02 surrounding the light emitting device 10 are provided, and the second reflection group 02 is located on a side of the first reflection group 01 away from the light emitting device 10. The first reflection group 01 and the second reflection group 02 are respectively provided with a plurality of first reflection sheets 11 and a plurality of second reflection sheets 12, and an angle between the first reflection sheets 11 and the first direction Y is larger than an angle between the second reflection sheets 12 and the first direction Y. The large-angle light emitted by the light emitting device 10 is emitted to the area outside the light emitting device 10, and the first reflecting sheet 11 in the first reflecting layer group 01 and the second reflecting sheet 12 in the second reflecting group 02 can respectively reflect the large-angle light when the stretchable display panel 100 is respectively in the first stretching state and the second stretching state for displaying, so that the problem of increasing the gap between the light emitting devices 10 during stretching is solved, the display performance of the stretchable display panel 100 is improved, and the normal display of the stretchable display panel 100 is realized.
As shown in fig. 1 to 3, the stretchable display panel 100 provided in the embodiment of the invention further includes an elastomer 14, and the elastomer 14 wraps the first reflection layer group 01 and the second reflection layer group 02.
When the elastic body 14 is stretched, the first reflection layer group 01 and the second reflection layer group 02 wrapped by the elastic body 14 are stretched, and the first reflection sheet 11 in the first reflection layer group 01 and the second reflection sheet 12 in the second reflection layer group 02 are similarly stretched, and then the inclination angle is changed. It can be understood that the inclination angles of the first reflective sheet 11 and the second reflective sheet 12 change along with the stretching degree of the elastic body 14, so that when the stretchable display panel 100 is in different stretching states, reflective sheets capable of reflecting the large-angle light emitted by the light emitting device 10 exist, and further, the problem that the stretchable display panel 100 has no visual effect difference in different stretching states is solved, the display performance of the stretchable display panel 100 is improved, and normal display of the stretchable display panel 100 is realized.
As shown in fig. 1 to 3, the elastomer in the stretchable display panel 100 provided in the embodiment of the present invention further encapsulates the light emitting device 10. The elastic body 14 wraps the light emitting device 10, and not only can space adjacent light emitting devices 10, but also can serve as a protective film layer of the light emitting device 10.
In the present embodiment, the elastic body 14 is disposed on the stretchable display panel 100, and the elastic body 14 wraps the light emitting device 10, the first reflection layer group 01 and the second reflection layer group 02. The elastic body 14 can make the stretchable display panel 100 in a stretched state, and can also ensure that the stretchable display panel 100 is restored to its original shape when the stretched state is released. It can be understood that the elastic body 14 is arranged to wrap the light emitting device 10, the first reflection layer group 01 and the second reflection layer group 02 at the same time, so that the deformation of the light emitting device 10, the first reflection layer group 01 and the second reflection layer group 02 and the distance thereof can be relatively consistent, which is favorable for the reflection of the reflection sheet in the reflection layer group, thereby reflecting the large-angle light emitted by the light emitting device 10 into the display unit, improving the condition that the display unit has a gap when stretching, improving the display performance of the stretchable display panel 100 and realizing the normal display of the stretchable display panel 100.
The elastic body 14 may be formed of a resin, and the component of the resin used for the elastic body 14 may be an epoxy-based or silicone-based rubber.
In one embodiment of the present invention, the first reflective sheet 11 in the first reflective layer group 01 of the stretchable display panel 100 is at least one of a metallized foil, a metallized copper sheet, and the second reflective sheet 12 in the second reflective layer group 02 of the stretchable display panel 100 is at least one of a metallized foil, a metallized copper sheet.
In this embodiment, the reflective sheet adopts at least one of a metal-plated foil and a metal-plated copper sheet, and the metal-plated foil and the metal-plated copper sheet have better light reflection effect. And more large-angle light can be reflected for display.
Alternatively, in one implementation of the embodiment of the present invention, the first reflective sheet 11 in the first reflective layer group 01 and the second reflective sheet 12 in the second reflective layer group 02 are made of the same material, and are all metal-plated foils.
Alternatively, in another implementation manner of the embodiment of the present invention, the first reflective sheet 11 in the first reflective layer group 01 and the second reflective sheet 12 in the second reflective layer group 02 are made of the same material, and are all metallized copper sheets.
The first reflecting sheet 11 in the first reflecting layer group 01 and the second reflecting sheet 12 in the second reflecting layer group 02 are made of the same material, so that not only can the large-angle light emitted by the light-emitting device 10 be reflected, but also the first reflecting sheet 11 and the second reflecting sheet 12 can be simultaneously made, and the method is easy to realize and saves cost.
As shown in fig. 1, the embodiment of the present invention provides a stretchable display panel 100, the number of first reflective sheets 11 in the first reflective layer group 01 of the stretchable display panel 100 is the same as the number of second reflective sheets 12 in the second reflective layer group 02, and the area of the first reflective sheets 11 in the first reflective layer group 01 is smaller than the area of the second reflective sheets 12 in the second reflective layer group 02.
In the present embodiment, the same number of the first reflective sheets 11 and the second reflective sheets 12 are disposed on the stretchable display panel 100, and the area of the first reflective sheets 11 is smaller than the area of the second reflective sheets 12.
In the present embodiment, since the number of the first reflective sheets 11 is the same as the number of the second reflective sheets 12, the display panel 100 has the same number of reflective sheets in both the first stretched state and the second stretched state to reflect the large-angle light emitted from the same light emitting device 10. It is ensured that the display panel 100 is in different stretching states, and the light emitting brightness of the sub-pixels corresponding to the light emitting devices 10 therein is also substantially uniform.
Fig. 4 is a schematic plan view of a stretchable display panel according to an embodiment of the invention.
As shown in fig. 4, the embodiment of the present invention provides a stretchable display panel 100, the number of first reflection sheets 11 in the first reflection layer group 01 of the stretchable display panel 100 is smaller than the number of second reflection sheets 12 in the second reflection layer group 02, and the area of the first reflection sheets 11 in the first reflection layer group 01 is the same as the area of the second reflection sheets 12 in the second reflection layer group 02.
The light emitted from the light emitting device 10 reaches the second reflecting sheet 12 farther and more is lost than the first reflecting sheet 11 closer. In this embodiment, since the area of the second reflective sheet 12 is larger than that of the first reflective sheet 11, when the display panel 100 is in the second stretched state with a larger stretching degree, the second reflective sheet with a larger area reflects the large-angle light emitted by the light emitting device 10, so that the loss when the light emitted by the light emitting device is transmitted farther can be compensated, and the light emitting brightness of the sub-pixels corresponding to the light emitting device 10 in the display panel 100 in different stretched states is ensured to be substantially uniform.
As shown in fig. 1 and 4, the embodiment of the invention provides a stretchable display panel 100, and in the thickness direction of the stretchable display panel 100, the orthographic projection of the light emitting device 10 is circular, the orthographic projection of the first reflection layer group 01 is a first ring shape, and the orthographic projection of the second reflection layer group 02 is a second ring shape.
In the present embodiment, the front projection of the light emitting device 10 is provided in a circular shape, and the front projection of the first reflection layer group 01 and the front projection of the second reflection layer group 02 are provided in a first ring shape and a second ring shape, respectively. When the stretchable display panel 100 is stretched, the light emitting device 10, the first reflection sheet 11 in the first reflection layer group 01, and the second reflection sheet 12 in the second reflection layer group 02 will rotate, and the large-angle light emitted from the light emitting device 10 will rotate with the rotation of the light emitting device 10.
In the present embodiment, the front projection of the light emitting device 10 is circular, and the front projection of the first reflection layer group 01 and the front projection of the second reflection layer group 02 are respectively a first ring shape and a second ring shape. Even if the rotation angles of the light emitting device 10, the first reflection sheet 11 in the first reflection layer group 01, and the second reflection sheet 12 in the second reflection layer group 02 are different, the reflection effect of the first reflection sheet 11 on the large-angle light is unchanged and the reflection effect of the second reflection sheet 12 on the large-angle light is unchanged.
Optionally, the center of the first ring, the center of the second ring, and the center of the circle of the stretchable display panel 100 coincide. I.e. the centre of the front projection of the light emitting device 10, the centre of the front projection of the first reflecting layer group 01 and the centre of the front projection of the second reflecting layer group 02 coincide.
As shown in fig. 1, the embodiment of the present invention provides a stretchable display panel 100, in which a distance between a first reflection layer group 01 and a second reflection layer group 02 surrounding the same light emitting device 10 is d1, and d1 is 20 μm or less and d1 is or less than 100 μm in the first reflection layer group 01 and the second reflection layer group 02 when the stretchable display panel 100 is in an unstretched state.
Alternatively, in the present embodiment, as shown in fig. 1, in the first reflection layer group 01 and the second reflection layer group 02 surrounding the same light emitting device 10, the distance between the first reflection layer group 01 and the second reflection layer group 02 is 50 μm.
Fig. 5 is a schematic plan view of a stretchable display panel according to an embodiment of the present invention, fig. 6 is a schematic cross-sectional structure of the stretchable display panel according to an embodiment of the present invention in a first stretched state, fig. 7 is a schematic cross-sectional structure of the stretchable display panel according to an embodiment of the present invention in a second stretched state, and fig. 8 is a schematic cross-sectional structure of the stretchable display panel according to an embodiment of the present invention in a third stretched state.
As shown in fig. 5, the stretchable display panel 100 provided in the embodiment of the invention further includes a third reflection layer group 03 surrounding the light emitting device 10, where the third reflection layer group 03 is located at the light emitting surface side of the film layer where the light emitting device 10 is located and includes a plurality of third reflection sheets 13. The third reflective layer group 03 may be used to reflect at least a portion of light emitted by the light emitting device 10.
As shown in fig. 6 and 7, the inclination angle of the third reflection sheet 13 in the third reflection layer group 03 is different in the first stretched state, the second stretched state, and the third stretched state of the stretchable display panel 100. For example, as shown in fig. 6 and 7, when the stretchable display panel 100 is in the first stretched state, the angle between the third reflective sheet 13 and the first direction Y is α5; when the stretchable display panel 100 is in the second stretched state, the angle between the third reflective sheet 13 and the first direction Y is α6; when the stretchable display panel 100 is in the third stretched state, the angle between the third reflective sheet 13 and the first direction Y is α7, α5++α6, α6+noteα7, α5+noteα7.
Wherein the distance between adjacent light emitting devices 10 in the display panel 100 is different in the third stretched state and in the first stretched state, i.e., the second stretched state. For example, the distance between adjacent light emitting devices 10 in the display panel 100 is larger in the third stretched state and smaller in the second stretched state, and the distance between adjacent light emitting devices 10 in the display panel 100 is larger in the second stretched state and smaller in the first stretched state.
In the present embodiment, as shown in fig. 5, the light emitting device 10 is surrounded by a first reflection layer group 01, a second reflection layer group 02, and a third reflection layer group 03. Of the first, second and third reflection layer groups 01, 02 and 03 surrounding the same light emitting device 10, the third reflection layer group 03 is located on a side of the second reflection layer group 02 remote from the first reflection layer group 01. I.e., the third reflective sheet 13 is farther from the light emitting device 10 than the first reflective sheet 11 and the second reflective sheet 12. Since the reflective sheet is disposed around the light emitting device 10, the large-angle light emitted from the light emitting device 10 can be reflected by the reflective sheet to be emitted as the emitted light of the stretchable display panel 100, thereby increasing the final emitting area of the light emitted from the light emitting device 10.
As shown in fig. 6 and 7, in the same stretching state, the angle between the third reflective sheet 13 in the third reflective layer group 03 and the first direction Y is smaller than the angle between the second reflective sheet 12 in the second reflective layer group 02 and the first direction Y; the first direction Y is perpendicular to the plane in which the light emitting device 10 is located. That is, when the stretchable display panel 100 is in the same stretched state, the angle between the third reflection sheet 13 farther from the light emitting device 10 and the first direction Y is smaller, that is, α5 < α3, α6 < α4.
It should be noted that the stretching will make the third reflection sheet 13 in the third reflection layer group 03 more horizontal, i.e., the stretching will make the inclination angle of the third reflection sheet 13 in the third reflection layer group 03 larger.
When the stretchable display panel 100 is changed from the second stretched state to the third stretched state, the distance between the adjacent light emitting devices 10 becomes larger as the stretching degree thereof becomes larger, and thus the third reflection sheet 13 further from the light emitting devices 10 is required to reflect the large-angle light emitted from the light emitting devices 10 to further increase the final exit area of the light emitted from the light emitting devices 10.
Hereinafter, description will be given by taking fig. 6, 7 and 8 as an example.
When the stretchable display panel 100 is in the first stretched state as shown in fig. 6, an angle α5 between the third reflective sheet 13 in the third reflective layer group 03 and the first direction Y is smaller than an angle α3 between the second reflective sheet 12 in the second reflective layer group 02 and the first direction Y; the angle α1 between the first reflection sheet 11 in the first reflection layer group 01 and the first direction Y is larger than the angle α3 between the second reflection sheet 12 in the second reflection layer group 02 and the first direction Y. In this state, the large-angle light L2 emitted from the light emitting device 10 is reflected by the first reflection sheet 11, and is emitted as the emitted light of the stretchable display panel 100, increasing the final emitting area of the light emitted from the light emitting device 10, and thus enabling the stretchable display panel 100 to display normally.
When the stretchable display panel 100 is in the second stretched state as shown in fig. 7, the angles between the third reflective sheet 13, the second reflective sheet 12, and the first reflective sheet 11 and the first direction Y are larger than the angles between the third reflective sheet 13, the second reflective sheet 12, and the first reflective sheet 11 and the first direction Y in the first stretched state, and the angle α6 between the third reflective sheet 13 and the first direction Y in the second stretched state is smaller than the angle α4 between the second reflective sheet 12 and the first direction Y, and the angle α2 between the first reflective sheet 11 and the first direction Y in the second stretched state is larger than the angle α4 between the second reflective sheet 12 and the first direction Y. In this state, the first reflective sheet 11 tends to be horizontal, the reflective power of the large-angle light L2 emitted from the light emitting device 10 is reduced, the large-angle light L2 emitted from the light emitting device 10 is reflected by the second reflective sheet 12, and is emitted as the emitted light of the stretchable display panel 100, increasing the final emitting area of the light emitted from the light emitting device 10, and thus enabling the stretchable display panel 100 to display normally.
When the stretchable display panel 100 is in the third stretched state as shown in fig. 8, the angles between the third reflective sheet 13, the second reflective sheet 12 and the first reflective sheet 11 and the first direction Y are larger than the angles between the third reflective sheet 13, the second reflective sheet 12 and the first reflective sheet 11 and the first direction Y in the second stretched state, and the angle α7 between the third reflective sheet 13 and the first direction Y in the second stretched state is smaller than the angle between the second reflective sheet 12 and the first direction Y, and the angle between the first reflective sheet 11 and the first direction Y in the second stretched state is larger than the angle between the second reflective sheet 12 and the first direction Y. In this state, the first reflective sheet 11 and the second reflective sheet 12 both tend to be in a horizontal state, the reflective capability of the light emitting device 10 for emitting the large-angle light L2 is reduced, and the large-angle light L2 emitted by the light emitting device 10 is reflected by the third reflective sheet 13, so as to be emitted as the emergent light of the stretchable display panel 100, and the final emergent area of the light emitted by the light emitting device 10 is increased, so that the stretchable display panel 100 can display normally.
In this embodiment, the first reflection group 01, the second reflection group 02 and the third reflection group 03 surrounding the same light emitting device 10 are provided, and the third reflection group 03 is located at a side of the second reflection group 02 away from the first reflection group 01. The third reflection layer group 03 is provided with a plurality of third reflection sheets 13, and an included angle between the third reflection sheets 13 and the first direction Y is smaller than an included angle between the first reflection sheet 11 and the second reflection sheet 12 and the first direction Y. When the stretchable display panel 100 is stretched to a greater extent, the first reflective sheet 11 in the first reflective layer group 01 and the second reflective sheet 12 in the second reflective layer group 02 tend to be in a horizontal state, the reflective capability of the light emitting device 10 for emitting large-angle light is weakened, the large-angle light emitted by the light emitting device 10 is reflected by the third reflective sheet 13 in the third reflective layer group 03 for display, and thus the problem of increasing the gap between the light emitting devices 10 during stretching is solved, the display performance of the stretchable display panel 100 is improved, and the normal display of the stretchable display panel 100 is realized.
As shown in fig. 6 to 8, in the same stretched state, the difference between the third reflective sheet 13 and the second reflective sheet 12 and the first direction Y is smaller than the difference between the second reflective sheet 12 and the first reflective sheet 11 and the first direction Y. That is, (α1- α3) > (α3- α5), (α2- α4) > (α4- α6). For example, as shown in fig. 6 to 8, the farther the reflecting sheet is from the light emitting device 10, the greater the tendency of the reflecting sheet to stand upright. That is, when the stretchable display panel 100 is in the same stretched state, the inclination of the third reflecting sheet 13 farther from the light emitting device 10 is smaller, and thus the stretching degree of the stretchable display panel 100 is greater, the inclination angle of the farther reflecting sheet can better function to reflect the large-angle light emitted from the light emitting device 10. Further, the visual effect problem in the stretching process is improved, the display performance of the stretchable display panel 100 is improved, and the normal display of the stretchable display panel 100 is realized.
Fig. 9 is a schematic diagram of a stretchable display device according to an embodiment of the invention.
As shown in fig. 9, an embodiment of the present application further provides a stretchable display device, including the stretchable display panel 100 provided in the above embodiment and a housing, wherein the housing forms a receiving space for receiving the stretchable display panel 100, and the housing may be rigid or flexible, which is not particularly limited in this aspect of the present application. It can be understood that the stretchable display device provided by the embodiment of the application can be a display device with display functions such as a computer, a television, a vehicle-mounted display device, a wearable display device, an artificial intelligence display device and the like, and the application is not particularly limited to the above.
In the stretchable display device provided by the embodiment of the invention, a split-ring reflection scheme is established by arranging a plurality of reflection layer groups around the light emitting device 10 and arranging a plurality of reflection sheets in the reflection layer groups. When the stretchable display device is in different stretching states, the large-angle light emitted by the light emitting device 10 is reflected by the reflecting sheets in different reflecting layer groups and then used for displaying, so that the visual effect problem of the display device in the stretching process is improved, the display performance of the stretchable display device is improved, and the normal display of the stretchable display device is realized.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.
Claims (12)
1. A stretchable display panel, comprising:
a plurality of light emitting devices;
the first reflection layer groups are positioned on one side of the light emitting surface of the film layer where the light emitting device is positioned and comprise a plurality of first reflection sheets; the inclination angle of the first reflecting sheet is different in a first stretching state and a second stretching state of the display panel;
the plurality of second reflection layer groups are positioned on one side of the light emitting surface of the film layer where the light emitting device is positioned and comprise a plurality of second reflection sheets; the inclination angle of the second reflecting sheet is different in the first stretching state and the second stretching state of the display panel;
wherein the first reflection layer group and the second reflection layer group are surrounded on the periphery of the light-emitting device;
The first reflecting layer group and the second reflecting layer group which surround the same light emitting device are arranged on one side of the first reflecting layer group away from the light emitting device, and the included angle between the first reflecting sheet and the first direction is larger than the included angle between the second reflecting sheet and the first direction in the same stretching state; the first direction is perpendicular to a plane in which the light emitting device is located.
2. The stretchable display panel according to claim 1, further comprising an elastomer, wherein the elastomer encapsulates the first and second groups of reflective layers.
3. The stretchable display panel according to claim 2, wherein the elastomer further encapsulates the light emitting device.
4. The stretchable display panel according to claim 1, wherein the first reflective sheet is at least one of a metallized foil, a metallized copper sheet; the second reflector plate is at least one of a metal-plated foil and a metal-plated copper sheet.
5. The stretchable display panel according to claim 1, wherein the number of the first reflective sheets in the first reflective layer group is the same as the number of the second reflective sheets in the second reflective layer group, and an area of the first reflective sheets in the first reflective layer group is smaller than an area of the second reflective sheets in the second reflective layer group.
6. The stretchable display panel according to claim 1, wherein the number of the first reflective sheets in the first reflective layer group is smaller than the number of the second reflective sheets in the second reflective layer group, and an area of the first reflective sheets in the first reflective layer group is the same as an area of the second reflective sheets in the second reflective layer group.
7. The stretchable display panel according to claim 1, wherein the orthographic projection of the light emitting device is circular, the orthographic projection of the first reflection layer group is a first ring shape, and the orthographic projection of the second reflection layer group is a second ring shape along a thickness direction of the stretchable display panel.
8. The stretchable display panel of claim 7, wherein a center of the first ring, a center of the second ring, and a center of the circle coincide.
9. The stretchable display panel according to claim 1, wherein a distance between the first reflection layer group and the second reflection layer group surrounding the same light emitting device in the first reflection layer group and the second reflection layer group is d1, 20 μm.ltoreq.d1.ltoreq.100 μm when the stretchable display panel is in an unstretched state.
10. The stretchable display panel according to claim 1, further comprising a third reflective layer group surrounding the light emitting device, the third reflective layer group being located on a light emitting surface side of the film layer where the light emitting device is located and comprising a plurality of third reflective sheets; the inclination angle of the third reflection sheet is different in the first stretching state and the second stretching state of the display panel;
And the included angle between the third reflecting sheet and the first direction in the third reflecting layer group is smaller than the included angle between the second reflecting sheet and the first direction in the second reflecting layer group.
11. The stretchable display panel according to claim 10, wherein the difference in angle between the third reflective sheet and the second reflective sheet and the first direction is smaller than the difference in angle between the second reflective sheet and the first direction in the same stretched state.
12. A stretchable display device comprising a stretchable display panel according to any of claims 1-11.
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| CN202210757766.9A CN115148104B (en) | 2022-06-29 | 2022-06-29 | Stretchable display panel and stretchable display device |
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