CN206849868U - A kind of organic EL display panel and display device - Google Patents
A kind of organic EL display panel and display device Download PDFInfo
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- CN206849868U CN206849868U CN201720784196.7U CN201720784196U CN206849868U CN 206849868 U CN206849868 U CN 206849868U CN 201720784196 U CN201720784196 U CN 201720784196U CN 206849868 U CN206849868 U CN 206849868U
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- 230000004888 barrier function Effects 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
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- Electroluminescent Light Sources (AREA)
Abstract
The utility model discloses a kind of organic EL display panel and display device, by way of in underlay substrate external zones, at least one boundary column is set, the boundary column surrounds the multiple display devices for being arranged at underlay substrate viewing area and the cyclic structure to close, the deposition of inoranic membrane can need not be carried out using mask plate when forming encapsulating film, the whole face deposition inoranic membrane directly on underlay substrate, it is more than the boundary column of each inorganic film thickness sum using thickness, make inoranic membrane be covered in boundary column on part and other parts be off-state, the uneven shadow region of thickness can so be avoided, be advantageous to encapsulate narrow frame design.And; due to the presence on the boundary column using organic matter making; when crackle extends from the edge of display panel to centre; boundary column can end the crackle and be extended to centre; crackle will not also extend at the inoranic membrane disconnected at boundary column to centre, the risk for effectively protecting device not influenceed by water oxygen and failing.
Description
Technical Field
The utility model relates to a show technical field, especially relate to an organic electroluminescent display panel and display device.
Background
With the progress of Display technology, more and more Active Matrix Organic Light Emitting Diode (AMOLED) Display panels enter the market, and compared with the conventional Transistor Liquid Crystal Display (TFT LCD), the AMOLED Display panels have the advantages of low energy consumption, low production cost, self-luminescence, wide viewing angle, fast response speed, and the like.
At present, the encapsulation of the OLED display panel may adopt flexible encapsulation to realize flexible display. In flexible packaging, Mask is required to be used for shielding when an inorganic film is deposited by Chemical Vapor Deposition (CVD), which may generate a Shadow (Shadow) area with uneven film thickness of the deposited inorganic film. In addition, if the display panel is in a special shape, the process difficulty of CVD evaporation during the corresponding special-shaped packaging is higher, the precision is lower, and the frame width of the display panel is further increased.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present invention provide an organic electroluminescent display panel and a display device, so as to solve the problem that the conventional packaging process is difficult to have a narrow frame.
Accordingly, an embodiment of the present invention provides an organic electroluminescent display panel, including: the display device comprises a substrate base plate, a plurality of display devices arranged on a display area of the substrate base plate, at least one boundary fence arranged on a peripheral area of the substrate base plate, and packaging films arranged on the display area and the peripheral area of the substrate base plate; wherein,
the demarcation bar surrounds the plurality of display devices and is of a closed annular structure;
the packaging film comprises at least one layer of inorganic film and at least one layer of organic film which are alternately arranged;
the boundary fence is an organic matter and the thickness of the boundary fence is greater than the sum of the thicknesses of the inorganic films;
the organic film covers only the plurality of display devices; the inorganic film covers the entire base substrate, and the portion of the inorganic film covering the boundary bar is disconnected from other portions.
In one possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, a difference between the thickness of the boundary bar and the sum of the thicknesses of the inorganic films is in a range from 0.2 μm to 0.5 μm.
In one possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, a slope angle between the boundary bar and the substrate base plate is between 80 degrees and 120 degrees.
In one possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, a slope angle between the boundary bar and the substrate base plate is greater than 90 degrees.
In one possible implementation manner, in the above organic electroluminescent display panel provided by the embodiments of the present invention, a distance between the boundary bar at the outermost side and the edge of the substrate is not less than 150 μm.
In one possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, the width of the boundary bars is 20 μm, and the distance between the boundary bars is 20 μm.
In a possible implementation manner, in the above organic electroluminescent display panel provided in an embodiment of the present invention, the boundary bar is disposed on the same layer as one or a combination of a spacer, a pixel defining layer, and a flat layer in the display device.
In a possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, the number of the dividing bars is two.
In one possible implementation manner, in the organic electroluminescent display panel provided by the embodiment of the present invention, the substrate is a flexible substrate.
On the other hand, the embodiment of the utility model provides a still provide a display device, include the embodiment of the utility model provides an above-mentioned organic electroluminescent display panel.
The utility model discloses beneficial effect includes:
the embodiment of the utility model provides an organic electroluminescent display panel and a display device, which are characterized in that at least one boundary fence is arranged in the peripheral area of a substrate, the boundary column surrounds a plurality of display devices arranged in the display area of the substrate base plate and is of a closed annular structure, inorganic films can be directly deposited on the whole surface of the substrate base plate without adopting a mask plate when forming the packaging films arranged in the display area and the peripheral area of the substrate base plate, and the part covered on the boundary bar by the inorganic films is in a disconnected state with other parts by utilizing the boundary bar with the thickness larger than the sum of the thicknesses of the inorganic films, so that a shadow area with uneven film thickness can be avoided, the narrow frame design is favorably packaged, and the shape of the boundary fence can be designed according to the shape of the special-shaped display panel, so that the packaging shape is relatively flexible, and the special-shaped packaging of the narrow frame is realized under the special-shaped display condition. In addition, due to the existence of the boundary fence made of organic matters, when a crack propagates from the edge of the display panel to the middle, the boundary fence can stop the crack from propagating to the middle, the inorganic film is disconnected at the boundary fence, and the crack cannot propagate from the inorganic film to the middle, so that the risk that the device fails under the influence of water and oxygen is effectively protected.
Drawings
Fig. 1 is a schematic top view of a prior art organic electroluminescent display panel;
FIG. 2 is a schematic cross-sectional view along AA in FIG. 1;
fig. 3a and 3b are schematic top views of an organic electroluminescent display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view along BB in FIG. 3 a;
fig. 5a to fig. 5c are schematic cross-sectional views of an organic electroluminescent display panel according to an embodiment of the present invention after completion of steps in manufacturing.
Detailed Description
At present, flexible packaging is a key process of flexible display, and directly affects the reject ratio and reliability of the flexible display. As shown in fig. 1 and 2, in the flexible package, an encapsulation film 03 covering the display device 02 is disposed on a substrate 01, and the encapsulation film 03 generally includes three layers, i.e., a first inorganic film 031, an organic film 032, and a second inorganic film 033; the first inorganic film 031 and the second inorganic film 033 have certain hardness, which can effectively prevent water and oxygen from entering the display device 02 to prevent the OLED device from failing, but the inorganic films are thinner than 1 μm, and thus cannot wrap fine particles, which may cause packaging failure; the organic film 032 has a thickness of about 6 μm to 10 μm, can cover and wrap some fine particles, and has better flexibility, so as to improve the flexibility of the encapsulating film 03 and prevent cracks from diffusing from the extension of the inorganic film to the interior of the inorganic film, which causes the failure of the encapsulation, but the organic film 032 has no waterproof property, so that the second inorganic film 033 is required to cover the organic film 032.
Specifically, the first inorganic film 031 and the second inorganic film 033 are generally deposited by Chemical Vapor Deposition (CVD), and since the first inorganic film 031 and the second inorganic film 033 to be formed are spaced apart from the edge of the panel by a safety distance a, a Shadow (Shadow) region b having an uneven film thickness is generated in the deposited inorganic film by masking the edges with a Mask 04(Mask) during Deposition, and a transition region c is required to be reserved in order to prevent water and oxygen from entering the organic film 032 through a gap between the first inorganic film 031 and the second inorganic film 033, so that the peripheral region surrounding the display region is composed of a safety distance a + the Shadow region b and the transition region c.
If the first inorganic film 031 and the second inorganic film 033 exceed the edge or are too close to the edge, cracks generated during the cutting or the transportation of the panel may propagate from the first inorganic film 031 and the second inorganic film 033 toward the center of the display device 02, causing the encapsulation failure. The shadow region b may cause an increase of the package frame, which is not favorable for the narrow frame design of the display panel. In addition, if the display panel is in a special shape, the process difficulty of CVD evaporation during the corresponding special-shaped packaging is higher, the precision is lower, and the frame width of the display panel is further increased.
Based on this, the embodiment of the present invention provides an organic electroluminescent display panel, which can avoid the above problems.
The following describes in detail specific embodiments of an organic electroluminescent display panel and a display device according to embodiments of the present invention with reference to the accompanying drawings.
The thickness and the area shape of each layer of film in the drawings do not reflect the real proportion of the organic electroluminescent display panel, and the purpose is only to illustrate the content of the present invention.
An embodiment of the present invention provides an organic electroluminescent display panel, as shown in fig. 3a and 4, including: a substrate base plate 100, a plurality of display devices 200 disposed on a display area of the substrate base plate 100, at least one division bar 300 disposed on a peripheral area of the substrate base plate 100, and an encapsulation film 400 disposed on the display area and the peripheral area of the substrate base plate 100; wherein,
the boundary bar 300 surrounds the plurality of display devices 200 and has a closed ring structure;
the encapsulation film 400 includes at least one inorganic film 401 and at least one organic film 402 alternately disposed with each other;
the boundary fence 300 is an organic matter and has a thickness greater than the sum of the thicknesses of the inorganic films 401;
the organic film 402 covers only the plurality of display devices 200; the inorganic film 401 covers the entire base substrate 100, and the portion of the inorganic film 401 covering the boundary bar 300 is disconnected from the other portions.
Specifically, in the above-mentioned organic electroluminescence display panel provided by the embodiment of the present invention, because of the manner of setting at least one boundary bar 300 in the peripheral area of the substrate 100, it is not necessary to use a mask plate to deposit the inorganic film 401 when forming the encapsulation film 400, directly deposit the inorganic film 401 on the whole surface of the substrate 100, and use the boundary bar 300 whose thickness is greater than the sum of the thicknesses of the inorganic films 401, so that the part of the inorganic film 401 covering the boundary bar 300 is disconnected from other parts, thereby avoiding the shadow area with uneven film thickness, which is beneficial to the design of narrow frame encapsulation, and as shown in fig. 3b, the shape of the boundary bar 300 can be designed according to the shape of the special-shaped display panel, making the encapsulation shape relatively flexible, which is beneficial to the special-shaped encapsulation of narrow frame under the special-shaped display condition. In addition, due to the existence of the boundary bar 300 made of organic matter, when a crack propagates from the edge of the display panel to the middle, the boundary bar 300 can stop the crack from propagating to the middle, the inorganic film 401 is disconnected at the boundary bar 300, and the crack does not propagate from the inorganic film 401 to the middle, so that the risk that the device is influenced by water and oxygen and fails is effectively protected.
In practical implementation, in the above-mentioned organic electroluminescent display panel according to an embodiment of the present invention, in order to ensure that the portion of the inorganic film 401 above the boundary bar 300 is effectively disconnected from other portions, and effectively prevent cracks from propagating from the inorganic film 401 to the middle, the difference between the thickness of the boundary bar 300 and the sum of the thicknesses of the inorganic films 401 should be greater than a certain value range, and preferably, when the difference between the thickness of the boundary bar 300 and the sum of the thicknesses of the inorganic films 401 is 0.2 μm to 0.5 μm, the portion of the inorganic film 401 above the boundary bar 300 is effectively disconnected from other portions.
In practical implementation, in the above organic electroluminescent display panel provided by the embodiment of the present invention, the encapsulation film 400 may include only one inorganic film 401 and one organic film 402, and at this time, the organic film 402 may be closer to the display device 200 than the inorganic film 401, for example, so that the organic film 402 covers and wraps some fine particles, and the upper inorganic film 401 covers and wraps the organic film 402 to block water and oxygen.
Preferably, in the organic electroluminescent display panel according to an embodiment of the present invention, as shown in fig. 4, the encapsulation film 400 includes two inorganic films 401 and one organic film 402, and the two inorganic films 401 can both perform a better water and oxygen blocking function and achieve a good flexibility.
Specifically, taking the inorganic film 401 as two layers as an example, the sum of the thicknesses of the inorganic films 401 is currently generally about 1.2 μm, and therefore, the thickness of the boundary bar 300 should be greater than 1.4 μm. According to the thickness of each organic film layer in the display device 200 of the present organic electroluminescent display panel, in the embodiment of the present invention, in the organic electroluminescent display panel, the boundary bar 300 may be disposed on the same layer with one or a combination of the spacer (PS), the Pixel Definition Layer (PDL), and the flat layer (PLN) of the display device 200. Alternatively, the boundary bar 300 may be made of a single organic film layer, which is not limited herein.
Specifically, in the embodiment of the present invention, in the above-mentioned organic electroluminescent display panel, whether the boundary bar 300 is made of a single-layer material or a multi-layer material is also determined according to the thickness of the specific organic film layer and the thickness of the inorganic film 401. Preferably, a single layer of material should be selected for the boundary bar 300 to reduce the difficulty of alignment in production. For example, the thickness of the spacer is about 1.5 μm, which can satisfy the requirement that the thickness of the boundary bar 300 is larger than 1.4 μm, so it is preferable to select the spacer and the boundary bar 300.
It should be noted that the organic electroluminescent display panel provided in the embodiment of the present invention is described by taking the inorganic film 401 as two layers, and in the specific implementation, the inorganic film 401 may be made larger than two layers, which is not limited herein.
In the embodiment of the present invention, in order to ensure that the portion of the inorganic film 401 above the boundary bar 300 is effectively disconnected from other portions, and effectively prevent cracks from propagating from the inorganic film 401 to the middle, the slope angle θ between the boundary bar 300 and the substrate 100 should be as large as possible, and preferably, when the slope angle θ between the boundary bar 300 and the substrate 100 is between 80 degrees and 120 degrees, the portion of the inorganic film 401 above the boundary bar 300 is effectively disconnected from other portions.
More preferably, in the organic electroluminescent display panel according to an embodiment of the present invention, the slope angle θ between the boundary bar 300 and the substrate base plate 100 is preferably greater than 90 degrees. During the specific manufacturing process, the gradient angle θ of the boundary bar 300 can be adjusted by controlling the baking time and the baking temperature of the film layer of the boundary bar 300. Most preferably, the slope angle θ between the boundary bar 300 and the substrate 100 is preferably between 90 degrees and 110 degrees, which can balance the manufacturing process and ensure that the portion of the inorganic film 401 above the boundary bar 300 is in a disconnected state from other portions.
In practical implementation, in the organic electroluminescent display panel according to an embodiment of the present invention, in order to realize a narrow frame design for package to the maximum, the distance between the boundary bar 300 at the outermost side and the edge of the substrate 100 should be shortened as much as possible on the basis that the distance between the boundary bar 300 at the outermost side and the edge of the substrate 100 satisfies the safety distance. Specifically, the current safety distance is generally about 150 μm, and therefore, the distance between the outermost boundary bar 300 and the edge of the substrate 100 should be no less than 150 μm to ensure that cracks generated during the panel cutting or transporting process do not directly cross the boundary bar 300, thereby disabling the boundary bar 300.
In the embodiment of the present invention, preferably, in order to prevent the boundary bar 300 from failing, a plurality of boundary bars 300 may be provided, and each boundary bar 300 has a certain width, and a certain distance needs to be set between the boundary bars 300, so that the function of preventing crack propagation layer by layer is achieved. The larger the number of the delimiters 300, the larger the width, and the longer the pitch, which is more advantageous for preventing crack propagation, but is disadvantageous for narrow frame design.
In view of this, it is preferable that the number of the barriers 300 in the organic electroluminescent display panel according to the embodiment of the present invention is two, which can balance the narrow frame design and the crack propagation prevention.
In the organic el display panel according to an embodiment of the present invention, the width of each of the barriers 300 is controlled to be about 20 μm, and when the distance between the barriers 300 is about 20 μm, the distance from the innermost barrier 300 to the edge of the panel is 160 μm, so that the panel can be designed to have a narrow frame and prevent crack propagation, compared to the frame design in which the shadow area b + the safety distance a is 100 μm +150 μm is 250 μm as shown in fig. 2.
In particular, the embodiment of the present invention provides an organic electroluminescent display panel, which can be fabricated into a flexible display device, and at this time, the substrate 100 needs to be a flexible substrate, and can be formed by any suitable insulating material with flexibility. For example, the flexible substrate may be formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or thin film Fiber Reinforced Plastic (FRP). The flexible substrate may be transparent, translucent, or opaque, and is not limited thereto.
Based on same utility model design, the embodiment of the utility model provides a still provide a manufacturing approach of above-mentioned organic electroluminescent display panel, because the principle that this manufacturing approach solved the problem is similar with aforementioned an organic electroluminescent display panel, consequently the implementation of this manufacturing approach can see organic electroluminescent display panel's implementation, and repeated part is no longer repeated.
Specifically, the embodiment of the present invention provides a method for manufacturing the organic electroluminescent display panel, which can be implemented in the following manner:
forming a plurality of display devices in a display area of a substrate base plate, and forming at least one boundary column in a peripheral area of the substrate base plate; the boundary column surrounds the plurality of display devices and is of a closed annular structure; the boundary column is organic matter and has a thickness greater than the sum of the thicknesses of the inorganic films to be formed;
forming an encapsulation film on the substrate display area and the peripheral area; the packaging film comprises at least one layer of inorganic film and at least one layer of organic film which are alternately arranged; the organic film covers only the plurality of display devices; the inorganic film covers the entire substrate, and the portion of the inorganic film covering the boundary bar is disconnected from other portions.
In a specific implementation, in the method for manufacturing an organic electroluminescent display panel provided by the embodiment of the present invention, the encapsulation film is formed in the substrate display area and the peripheral area, and the following method may be specifically adopted:
forming an inorganic film on the whole substrate by chemical vapor deposition, wherein the part covered on the boundary fence is disconnected with other parts; therefore, inorganic films are prevented from being deposited by using a mask plate, shadow areas with uneven film thickness can be avoided, narrow frame packaging design is facilitated, the shape of the demarcation column can be designed according to the shape of the special-shaped display panel, the packaging shape is relatively flexible, and special-shaped packaging of the narrow frame is facilitated under the special-shaped display condition;
forming an organic film covering the plurality of display devices on the base substrate by printing; therefore, the composition process can be avoided, the production cost can be reduced, and the production efficiency can be improved.
Furthermore, in the manufacturing method provided by the embodiment of the present invention, in order to save the manufacturing process, at least one boundary bar may be formed in the peripheral area of the substrate while forming one or a combination of a spacer, a pixel defining layer, and a planarization layer in the display device in the display area of the substrate.
The following takes the structure of the organic electroluminescent display panel shown in fig. 4 as an example to illustrate the method for manufacturing the organic electroluminescent display panel provided by the embodiment of the present invention, which includes the following steps:
1. as shown in fig. 5a, a display device 200 and two delimiters 300 are fabricated on a substrate 100, wherein the gradient angle between the delimiters 300 and the substrate 100 is greater than 90 degrees;
2. as shown in fig. 5b, an entire layer of the inorganic film 401 is deposited on the substrate 100, and the portion of the inorganic film 401 covering the division bar 300 is disconnected from other portions;
3. as shown in fig. 5c, an organic film 402 is printed on an inorganic film 401;
4. as shown in fig. 4, the entire inorganic film 401 is deposited on the base substrate 100, and the portion of the inorganic film 401 covering the division bar 300 is disconnected from other portions.
Based on same utility model the design, the embodiment of the utility model provides a still provide a display device, include the embodiment of the utility model provides an above-mentioned organic electroluminescent display panel. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be referred to the above embodiments of the organic electroluminescent display panel, and repeated descriptions are omitted.
The organic electroluminescent display panel and the display device provided by the embodiment of the utility model are provided with at least one boundary fence in the peripheral area of the substrate, the boundary column surrounds a plurality of display devices arranged in the display area of the substrate base plate and is of a closed annular structure, inorganic films can be directly deposited on the whole surface of the substrate base plate without adopting a mask plate when forming the packaging films arranged in the display area and the peripheral area of the substrate base plate, and the part covered on the boundary bar by the inorganic films is in a disconnected state with other parts by utilizing the boundary bar with the thickness larger than the sum of the thicknesses of the inorganic films, so that a shadow area with uneven film thickness can be avoided, the narrow frame design is favorably packaged, and the shape of the boundary fence can be designed according to the shape of the special-shaped display panel, so that the packaging shape is relatively flexible, and the special-shaped packaging of the narrow frame is realized under the special-shaped display condition. In addition, due to the existence of the boundary fence made of organic matters, when a crack propagates from the edge of the display panel to the middle, the boundary fence can stop the crack from propagating to the middle, the inorganic film is disconnected at the boundary fence, and the crack cannot propagate from the inorganic film to the middle, so that the risk that the device fails under the influence of water and oxygen is effectively protected.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An organic electroluminescent display panel, comprising: the display device comprises a substrate base plate, a plurality of display devices arranged on a display area of the substrate base plate, at least one boundary fence arranged on a peripheral area of the substrate base plate, and packaging films arranged on the display area and the peripheral area of the substrate base plate; wherein,
the demarcation bar surrounds the plurality of display devices and is of a closed annular structure;
the packaging film comprises at least one layer of inorganic film and at least one layer of organic film which are alternately arranged;
the boundary fence is an organic matter and the thickness of the boundary fence is greater than the sum of the thicknesses of the inorganic films;
the organic film covers only the plurality of display devices; the inorganic film covers the entire display region and peripheral region of the base substrate, and the portion of the inorganic film covering the division bar is disconnected from other portions.
2. The organic electroluminescent display panel according to claim 1, wherein a difference between the thickness of the division bar and the sum of the thicknesses of the inorganic films is in a range of 0.2 μm to 0.5 μm.
3. The organic electroluminescent display panel according to claim 1, wherein a slope angle between the division bar and the substrate base is between 80 degrees and 120 degrees.
4. The organic electroluminescent display panel according to claim 3, wherein a slope angle between the division bar and the substrate base is greater than 90 degrees.
5. The organic electroluminescent display panel according to claim 1, wherein a distance between the outermost boundary rail and an edge of the substrate base plate is not less than 150 μm.
6. The organic electroluminescent display panel according to claim 5, wherein the widths of the division bars are 20 μm, and the intervals between the division bars are 20 μm.
7. The organic electroluminescent display panel according to claim 1, wherein the barrier is disposed in the same layer as one or a combination of a spacer, a pixel defining layer, and a planarization layer in the display device.
8. The organic electroluminescent display panel according to any one of claims 1 to 7, wherein the number of the division bars is two.
9. The organic electroluminescent display panel according to any one of claims 1 to 7, wherein the base substrate is a flexible substrate.
10. A display device comprising the organic electroluminescent display panel according to any one of claims 1 to 9.
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| CN201720784196.7U CN206849868U (en) | 2017-06-30 | 2017-06-30 | A kind of organic EL display panel and display device |
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| CN201720784196.7U CN206849868U (en) | 2017-06-30 | 2017-06-30 | A kind of organic EL display panel and display device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400257A (en) * | 2018-03-02 | 2018-08-14 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof and display device |
| CN108539037A (en) * | 2018-02-27 | 2018-09-14 | 武汉华星光电半导体显示技术有限公司 | A kind of OELD display devices |
| CN108649141A (en) * | 2018-05-14 | 2018-10-12 | 云谷（固安）科技有限公司 | display screen and preparation method thereof |
| WO2019000841A1 (en) * | 2017-06-30 | 2019-01-03 | Boe Technology Group Co., Ltd. | Display panel having a crack barrier layer and display apparatus thereof |
| CN110085133A (en) * | 2018-01-26 | 2019-08-02 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display panel and display device |
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