CN113539099A - Display substrate and display device - Google Patents
Display substrate and display device Download PDFInfo
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- CN113539099A CN113539099A CN202110813032.3A CN202110813032A CN113539099A CN 113539099 A CN113539099 A CN 113539099A CN 202110813032 A CN202110813032 A CN 202110813032A CN 113539099 A CN113539099 A CN 113539099A
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- protective layer
- bridge
- substrate
- connecting bridge
- display substrate
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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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- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses display substrate and display device, display substrate includes: the substrate is a flexible material piece; a plurality of island bodies arranged at intervals on one side of the substrate, each island body being provided with a light emitting layer; the two adjacent island bodies are connected through the connecting bridge, and the connecting bridge can deform in the length direction of the connecting bridge; first protective layer is equipped with first protective layer on connecting the bridge, and first protective layer extends along the length direction who connects the bridge, and first protective layer is deformable on the length direction of first protective layer. In the display substrate of this application, connect through connecting the bridge between two adjacent island bodies, can transmit the signal of telecommunication between island body and the island body through connecting the bridge, through be equipped with first protective layer on connecting the bridge, can strengthen the tensile strength who connects the bridge, when the panel that can stretch bears great external force, can protect through first protective layer and connect the bridge, reduce and connect the bridge and take place cracked risk, improve product use reliability and user experience.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display substrate and a display device.
Background
Along with the realization of mass production and productization of the flexible panel, the flexible panel can be stretched to form a new innovative application form after being folded and curled, and the form can be widely applied to wearable products, so that the flexible panel is convenient for users to carry about and provides better use experience for the users. At present, when the stretchable panel bears a large external force, a bridge playing a role of transmitting electric signals between islands is easy to break, and the use reliability and user experience of a product are reduced.
Disclosure of Invention
An object of the embodiments of the present application is to provide a display substrate and a display device, so as to solve the problem that when a stretchable panel bears a large external force, a bridge connecting islands and islands is easily broken.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a display substrate, including:
the substrate is a flexible material piece;
a plurality of island bodies arranged on one side of the substrate at intervals, and each island body is provided with a light-emitting layer;
the two adjacent island bodies are connected through the connecting bridge, and the connecting bridge can deform in the length direction of the connecting bridge;
first protective layer, be equipped with on the connection bridge first protective layer, just first protective layer along the length direction who connects the bridge extends first protective layer is deformable in the length direction of first protective layer.
The connecting bridge is arranged on the substrate, and the first protective layer is arranged on one side, far away from the substrate, of the connecting bridge; or
The first protective layer is arranged on the substrate, and the connecting bridge is arranged on one side of the first protective layer, which is far away from the substrate; or
The connecting bridge and the substrate are arranged at intervals, the first protective layer is arranged on one side of the connecting bridge close to the substrate, and the first protective layer is arranged on one side of the connecting bridge far away from the substrate; or alternatively.
The connecting bridge comprises a first connecting bridge and a second connecting bridge which are stacked, and the first protective layer is arranged between the first connecting bridge and the second connecting bridge.
And two ends of the first protective layer are respectively connected with the corresponding island bodies.
Wherein the first protective layer is an insulating material layer.
Wherein the sum of the thicknesses of the connecting bridge and the first protective layer in the direction perpendicular to the substrate is less than or equal to the distance between the light-emitting layer and the substrate.
Wherein a second protective layer is provided between the island body and the substrate.
The second protective layer is a deformable material layer.
The second protective layer is an insulating material layer.
In a second aspect, embodiments of the present application provide a display device, including the display substrate described in the above embodiments.
The display substrate of the embodiment of the application includes: the substrate is a flexible material piece; a plurality of island bodies arranged on one side of the substrate at intervals, and each island body is provided with a light-emitting layer; the two adjacent island bodies are connected through the connecting bridge, and the connecting bridge can deform in the length direction of the connecting bridge; first protective layer, be equipped with on the connection bridge first protective layer, just first protective layer along the length direction who connects the bridge extends first protective layer is deformable in the length direction of first protective layer. In the display substrate of this application embodiment, adjacent two pass through between the island body connect the bridge connection, can transmit the signal of telecommunication between island body and the island body through connecting the bridge, through be equipped with on the connection bridge first protective layer can strengthen the tensile strength who connects the bridge, when the panel that can stretch bears great external force, can protect the connection bridge through first protective layer, reduces the risk that the connection bridge breaks, improves product use reliability and user experience.
Drawings
FIG. 1 is a schematic view of a display substrate;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the bridge and the first passivation layer being strained;
FIG. 4 is another cross-sectional view taken along line A-A of FIG. 1;
FIG. 5 is a further cross-sectional view taken along line A-A of FIG. 1;
FIG. 6 is yet another cross-sectional view taken along line A-A of FIG. 1;
fig. 7 is yet another cross-sectional view taken along line a-a of fig. 1.
Reference numerals
A substrate 10;
an island body 20;
a connecting bridge 30; the first connecting bridge 31; a second connecting bridge 32;
a first protective layer 40;
and a second protective layer 50.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The display substrate provided in the embodiments of the present application will be described in detail below.
As shown in fig. 1 to 7, the display substrate of the embodiment of the present application includes: the substrate 10, the plurality of islands 20, the connecting bridges 30 and the first protective layer 40, wherein the substrate 10 may be a flexible material for stretching, and when an external force is applied in the X direction or the Y direction, the stretchable substrate 10 is subjected to stretching deformation in the X direction or the Y direction. A plurality of island bodies 20 may be disposed at intervals on one side of the substrate 10, the plurality of island bodies 20 may be distributed in an array, a light emitting layer may be disposed on each island body 20, and the light emitting layer may be formed on each island body 20 by deposition. Two adjacent island bodies 20 can be connected through a connecting bridge 30, the connecting bridge 30 can be a metal material, the connecting bridge 30 is usually made of metal materials such as Ag, Ti-Al-Ti, Mo (molybdenum) and the like, the stretchability of the three metal materials is gradually reduced, and the cost is also gradually reduced. The connecting bridge 30 is an area mainly subjected to stretching deformation to realize a stretching function, electric signals between the island body 20 and the island body 20 can be transmitted through the connecting bridge 30, the connecting bridge 30 can deform in the length direction of the connecting bridge 30, when the substrate 10 is stretched, the connecting bridge 30 can deform under certain external force, the connecting bridge 30 can stretch and deform, certain external force can be borne, and deformation of the island body 20 is small.
The first protective layer 40 may be disposed on the connecting bridges 30, for example, the first protective layer 40 may be coated on the surface of the connecting bridges 30, or the first protective layer 40 may be disposed inside the connecting bridges 30, or the connecting bridges 30 and the first protective layer 40 may be stacked, and the connecting bridges 30 and the first protective layer 40 may be stacked and staggered. First protective layer 40 can extend along the length direction who connects bridge 30, and first protective layer 40 is deformable on the length direction of first protective layer 40, can bear certain external force through first protective layer 40, can strengthen the tensile strength who connects bridge 30, when the panel that can stretch bears great external force, can protect through first protective layer 40 and connect bridge 30, reduces and connects bridge 30 and take place cracked risk, improves product use reliability and user experience.
In some embodiments, as shown in fig. 2, the connecting bridge 30 may be disposed on the substrate 10, the first protective layer 40 may be disposed on a side of the connecting bridge 30 away from the substrate 10, the first protective layer 40 may be coated on a side of the connecting bridge 30 away from the substrate 10, the tensile strength of the connecting bridge 30 may be enhanced by the first protective layer 40, and the connecting bridge 30 may be protected by the first protective layer 40, so as to reduce the risk of the connecting bridge 30 breaking. In the preparation process, the flexible substrate 10 may be prepared, the island bodies 20 are formed on the substrate 10, the connection bridges 30 are formed between the island bodies 20 by deposition, and the first protective layer 40 is coated on the connection bridges 30.
The first protective layer 40 is coated on the connecting bridge 30, the material of the first protective layer 40 has the characteristic of increasing the elastic modulus with the increase of the strain, and is selected but not limited to rubber materials, the coating thickness of the first protective layer 40 is not limited, and the sum of the thickness of the first protective layer 40 and the thickness of the routing of the connecting bridge 30 is not more than the light-emitting layer. As shown in fig. 1, when the display substrate is subjected to a tensile force in the X direction or the Y direction, and the strain of the connecting bridge 30 is smaller than the failure threshold thereof, the first protective layer 40 and the connecting bridge 30 are subjected to tensile deformation together to realize a stretchable function, and at the same time, the modulus of the first protective layer 40 tends to increase with the increase of the strain; when the strain applied to the connecting bridge 30 is close to the failure threshold, the modulus of the first protective layer 40 is close to infinity, that is, no matter how large the stress is, the strain does not exceed the failure threshold of the routing of the connecting bridge 30, which can be specifically shown in fig. 3, where a curve a represents the variation relationship between the strain and the stress of the first protective layer 40, and a curve b represents the variation relationship between the strain and the stress of the connecting bridge 30.
In other embodiments, as shown in fig. 4, the first protection layer 40 may be disposed on the substrate 10, and the connection bridge 30 may be disposed on a side of the first protection layer 40 away from the substrate 10. The first protective layer 40 may be coated on the substrate 10 and then deposited to form the connecting bridges 30, and the first protective layer 40 may protect the connecting bridges 30, thereby reducing the risk of the connecting bridges 30 breaking.
Optionally, as shown in fig. 5, the connection bridge 30 and the substrate 10 may be disposed at an interval in the thickness direction of the substrate 10, one side of the connection bridge 30 close to the substrate 10 may be provided with a first protection layer 40, one side of the connection bridge 30 far away from the substrate 10 may be provided with the first protection layer 40, that is, the connection bridge 30 is sandwiched between two layers of the first protection layers 40, the connection bridge 30 may be better protected by the two layers of the first protection layers 40, and the risk that the connection bridge 30 is broken is effectively reduced.
In the embodiment of the present application, as shown in fig. 6, the connection bridge 30 may include a first connection bridge 31 and a second connection bridge 32 which are stacked, the first connection bridge 31 and the second connection bridge 32 may transmit an electrical signal between the island body 20 and the island body 20, the first connection bridge 31 may deform in the length direction of the first connection bridge 31, the second connection bridge 32 may deform in the length direction of the second connection bridge 32, when the substrate 10 is stretched, the first connection bridge 31 and the second connection bridge 32 may deform under a certain external force, the first connection bridge 31 and the second connection bridge 32 may stretch to deform, and may bear a certain external force. Can be equipped with first protective layer 40 between first connecting bridge 31 and second connecting bridge 32, can protect first connecting bridge 31 and second connecting bridge 32 through first protective layer 40, effectively reduce the risk that the connecting bridge breaks. The connection bridge 30 may be deposited in two steps, first depositing the second connection bridge 32, coating the first protective layer 40 on the second connection bridge 32, and then depositing the first connection bridge 31 on the first protective layer 40, and the thicknesses of the first connection bridge 31 and the second connection bridge 32 may be equal or unequal, so that the first protective layer 40 is disposed between the first connection bridge 31 and the second connection bridge 32.
Optionally, both ends of the first protection layer 40 may be connected to the corresponding island 20, and the first protection layer 40 may bear a certain pulling force, so as to enhance the protection effect of the first protection layer 40 on the connection bridge 30, and effectively reduce the risk of the connection bridge breaking.
Optionally, the first protection layer 40 may be an insulating material layer, such as a rubber material layer, so as to avoid the influence of the first protection layer 40 on the connecting bridge 30, and have no influence on the spatial arrangement of the traces.
Optionally, as shown in fig. 2, 4 to 7, a sum of thicknesses of the connection bridge 30 and the first protection layer 40 in a direction perpendicular to the substrate 10 is less than or equal to a distance between the light emitting layer and the substrate 10, that is, a height of the connection bridge 30 and the first protection layer 40 relative to the substrate 10 is less than or equal to a distance between the light emitting layer and the substrate 10, so as to avoid affecting the light emitting layer.
In some embodiments, as shown in fig. 7, a second protective layer 50 may be disposed between the island body 20 and the substrate 10, and the island body 20 may be protected by the second protective layer 50 to prevent cracking of the island body 20.
Optionally, the second protective layer 50 is a deformable material layer, such as a rubber material layer, which effectively releases the stress action, prevents the island body 20 from cracking, and protects the island body 20.
Optionally, the second protection layer 50 may be an insulating material layer, such as a rubber material layer, so as to avoid the second protection layer 50 from affecting the traces in the island body 20.
An embodiment of the present application provides a display device, including the display substrate described in the above embodiment. The display device with the display substrate in the above embodiment can bear certain external force through the first protective layer 40, can strengthen the tensile strength of the connecting bridge 30, and when the display panel of the display device bears large external force, the connecting bridge 30 can be protected through the first protective layer 40, so that the risk of fracture of the connecting bridge 30 is reduced, and the use reliability and the user experience of the product are improved.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A display substrate, comprising:
the substrate is a flexible material piece;
a plurality of island bodies arranged on one side of the substrate at intervals, and each island body is provided with a light-emitting layer;
the two adjacent island bodies are connected through the connecting bridge, and the connecting bridge can deform in the length direction of the connecting bridge;
first protective layer, be equipped with on the connection bridge first protective layer, just first protective layer along the length direction who connects the bridge extends first protective layer is deformable in the length direction of first protective layer.
2. The display substrate according to claim 1, wherein the connecting bridge is disposed on the base, and the first protective layer is disposed on a side of the connecting bridge away from the base; or
The first protective layer is arranged on the substrate, and the connecting bridge is arranged on one side of the first protective layer, which is far away from the substrate; or
The connecting bridge and the substrate are arranged at intervals, the first protective layer is arranged on one side of the connecting bridge close to the substrate, and the first protective layer is arranged on one side of the connecting bridge far away from the substrate; or alternatively.
3. The display substrate of claim 1, wherein the connecting bridge comprises a first connecting bridge and a second connecting bridge arranged in a stacked manner, and the first protective layer is disposed between the first connecting bridge and the second connecting bridge.
4. The display substrate according to claim 1, wherein both ends of the first protective layer are connected to the corresponding island bodies, respectively.
5. The display substrate of claim 1, wherein the first protective layer is an insulating material layer.
6. The display substrate according to claim 1, wherein a sum of thicknesses of the connection bridge and the first protective layer in a direction perpendicular to the base is smaller than or equal to a distance between the light emitting layer and the base.
7. The display substrate according to claim 1, wherein a second protective layer is provided between the island body and the base.
8. The display substrate of claim 7, wherein the second passivation layer is a deformable material layer.
9. The display substrate of claim 7, wherein the second protective layer is an insulating material layer.
10. A display device comprising the display substrate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813032.3A CN113539099A (en) | 2021-07-19 | 2021-07-19 | Display substrate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813032.3A CN113539099A (en) | 2021-07-19 | 2021-07-19 | Display substrate and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113539099A true CN113539099A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110813032.3A Pending CN113539099A (en) | 2021-07-19 | 2021-07-19 | Display substrate and display device |
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Citations (6)
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| US20190129227A1 (en) * | 2017-10-26 | 2019-05-02 | Japan Display Inc. | Display device |
| CN109817687A (en) * | 2019-02-15 | 2019-05-28 | 京东方科技集团股份有限公司 | A kind of flexible base board and OLED display panel |
| CN109872631A (en) * | 2019-03-18 | 2019-06-11 | 京东方科技集团股份有限公司 | A kind of stretchable display module and preparation method thereof and display equipment |
| CN110504294A (en) * | 2019-08-30 | 2019-11-26 | 京东方科技集团股份有限公司 | Display device, stretchable display panel and its manufacturing method |
| CN111834379A (en) * | 2020-06-30 | 2020-10-27 | 昆山国显光电有限公司 | Array substrate, display panel and preparation method of array substrate |
| CN112863341A (en) * | 2021-01-12 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Stretchable display panel and display device |
-
2021
- 2021-07-19 CN CN202110813032.3A patent/CN113539099A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190129227A1 (en) * | 2017-10-26 | 2019-05-02 | Japan Display Inc. | Display device |
| CN109817687A (en) * | 2019-02-15 | 2019-05-28 | 京东方科技集团股份有限公司 | A kind of flexible base board and OLED display panel |
| CN109872631A (en) * | 2019-03-18 | 2019-06-11 | 京东方科技集团股份有限公司 | A kind of stretchable display module and preparation method thereof and display equipment |
| CN110504294A (en) * | 2019-08-30 | 2019-11-26 | 京东方科技集团股份有限公司 | Display device, stretchable display panel and its manufacturing method |
| CN111834379A (en) * | 2020-06-30 | 2020-10-27 | 昆山国显光电有限公司 | Array substrate, display panel and preparation method of array substrate |
| CN112863341A (en) * | 2021-01-12 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Stretchable display panel and display device |
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