CN110165075B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN110165075B CN110165075B CN201910404476.4A CN201910404476A CN110165075B CN 110165075 B CN110165075 B CN 110165075B CN 201910404476 A CN201910404476 A CN 201910404476A CN 110165075 B CN110165075 B CN 110165075B
- Authority
- CN
- China
- Prior art keywords
- layer
- inorganic layer
- display panel
- organic layer
- inorganic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to a display panel and a display device, wherein the display panel comprises a first inorganic layer and an organic layer arranged on the first inorganic layer, wherein a plurality of openings are arranged on the first inorganic layer, and the organic layer fills the plurality of openings and covers the first inorganic layer. By the method, the inorganic layer packaged by the film can be effectively prevented from cracking and peeling at the boundary, and the stability of the OLED device is improved.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of display panels, in particular to a display panel and a display device.
[ background of the invention ]
An Active-matrix organic light emitting diode (AMOLED) display panel is gradually becoming a new generation of display technology due to its characteristics of high contrast, wide color gamut, low power consumption, and being foldable.
Compared with the liquid crystal display technology, the AMOLED display panel has the remarkable characteristic that the AMOLED display panel can self-emit light, so that the energy loss is reduced. However, the OLED light-emitting material is easily invaded by moisture and oxygen in the air, thereby affecting the stability of the OLED device.
In the prior art, thin film encapsulation is a commonly used encapsulation method for improving the stability of an OLED device at present, and is formed by staggering inorganic layers and organic layers. However, for the OLED product to be bent, multiple bending easily causes cracks on the inorganic layer at the boundary, and may cause peeling of the inorganic layer, which may further cause moisture and oxygen to enter the OLED from the peeled portion to damage the OLED light emitting material, thereby affecting the stability of the OLED device.
[ summary of the invention ]
The application aims to provide a display panel and a display device, so that an inorganic layer of a film package is prevented from cracking and peeling at a boundary, and the stability of an OLED device is improved.
In order to solve the above problem, an embodiment of the present application provides a display panel, including: the organic layer fills the plurality of openings and covers the first inorganic layer.
Wherein the distribution density of the openings increases with increasing distance between the openings and the geometric center of the first inorganic layer.
Wherein the openings are arranged in an array on the first inorganic layer.
Wherein the cross section of the opening is one or more of a circle, a rectangle, a square, a diamond and an ellipse.
Wherein, a protective layer, a covering layer and a cathode layer are sequentially arranged on one side of the first inorganic layer far away from the organic layer, and the material of the protective layer does not react with the material of the organic layer.
Wherein, the opening is a groove or/and a through hole.
The first inorganic layer comprises a non-boundary area and a boundary area located around the non-boundary area, the opening is a groove and a through hole, the groove is located in the non-boundary area, and the through hole is located in the boundary area.
The display panel further comprises a second inorganic layer, wherein the second inorganic layer is arranged on the organic layer, and the boundary of the second inorganic layer is overlapped with the boundary of the first inorganic layer.
Wherein, organic layer is provided with a plurality of recesses on keeping away from the one side of first inorganic layer, and a plurality of recesses are filled and cover organic layer to the second inorganic layer.
In order to solve the above problem, an embodiment of the present application further provides a display device including the display panel of any one of the above and a driving circuit, wherein the driving circuit is configured to supply a driving voltage to the display panel.
The beneficial effect of this application is: be different from prior art, the display panel that this application provided includes first inorganic layer and sets up the organic layer on first inorganic layer, wherein, is provided with a plurality of openings on the first inorganic layer, and organic layer fills a plurality of openings and covers first inorganic layer to increase the cohesion of organic layer and first inorganic layer, can prevent effectively that the inorganic layer of film encapsulation from appearing crackle and peeling off in border department, and then improve OLED device's stability.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;
fig. 2 is a schematic top view of the first inorganic layer of fig. 1;
FIG. 3 is another schematic top view of the first inorganic layer of FIG. 1;
FIG. 4 is another schematic top view of the first inorganic layer of FIG. 1;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present application.
[ detailed description ] embodiments
The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.
At present, in the bending and folding process of the display panel, cracks may occur at the boundary of the inorganic layer of the film package, and the inorganic layer may be peeled off, which may cause moisture and oxygen to enter the display panel from the peeled portion to affect the stability of the display panel. In order to solve the technical problem, according to the technical scheme adopted by the application, the inorganic layer is provided with the opening so as to increase the bonding force between the inorganic layer and the organic layer, so that the inorganic layer packaged by the thin film can be prevented from cracking and peeling at the boundary, and the stability of the OLED device is further improved.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure. As shown in fig. 1, the display panel 10 includes a first inorganic layer 11 and an organic layer 12 disposed on the first inorganic layer 11. The first inorganic layer 11 is provided with a plurality of openings 111, and the organic layer 12 is filled in the plurality of openings 111 and covers the first inorganic layer 11, so that the contact area between the first inorganic layer 11 and the organic layer 12 can be increased, the bonding force between the two can be further enhanced, and the stability of the display panel 10 can be improved.
The material of the first inorganic layer 11 may be one or more of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, tantalum nitride, titanium oxide, aluminum oxynitride, and silicon oxynitride. The material of the organic layer 12 may be one of hexamethyldisiloxane, epoxy resin, acryl resin, polyimide resin, polyethylene naphthalate, and polyethylene terephthalate.
In one embodiment, as shown in fig. 2, the openings 111 may be arranged in an array on the first inorganic layer 11.
In another embodiment, as shown in fig. 3, considering that the stress received by the boundary region C1 of the first inorganic layer 11 may be greater than the stress received by the non-boundary region C2 of the first inorganic layer 11 during the bending process of the display panel 10, the distribution degree of the openings 111 may be set to increase as the distance between the openings 111 and the geometric center of the first inorganic layer 11 increases, so as to more effectively reduce the bending stress received by the boundary region C1 of the first inorganic layer 11, and further improve the stability of the display panel 10.
Further, considering that when the number of the openings 111 provided in the first inorganic layer 11 is large, the first inorganic layer 11 is easily broken during bending due to poor flexibility, which is not favorable for improving the stability of the display panel 10, as shown in fig. 4, the openings 111 may be provided only in the boundary area C1 of the first inorganic layer 11. Also, the openings 111 may be arranged in an array on the boundary area C1 of the first inorganic layer 11, or the distribution density of the openings 111 may increase as the distance between the openings 111 and the geometric center of the first inorganic layer 11 increases.
The cross section of the opening 111 may be one or more of circular, rectangular, square, diamond, oval, irregular geometric figure, and the like.
Specifically, the opening 111 may be a through hole or/and a groove.
For example, as shown in fig. 1, the opening 111 is a groove, the groove 111 is located on a side of the first inorganic layer 11 close to the organic layer 12, and the organic layer 12 fills the groove 111. The cross section of the groove 111 is preferably circular, and the circular contact area is large, so that the bonding force between the first inorganic layer 11 and the organic layer 12 can be better enhanced, the stress between the films can be reduced, and the first inorganic layer 11 can be prevented from cracking and peeling at the boundary.
For example, as shown in fig. 5, the opening 111 is a through hole, and the organic layer 12 fills the through hole 111 to increase the contact area between the organic layer 12 and the first inorganic layer 11. The cross section of the through hole 111 is preferably circular, the circular contact area is large, the bonding force between the organic layer 12 and the first inorganic layer 11 is favorably and better enhanced, the stress between the films is reduced, the packaging effect is improved, and the stability of the device is improved.
For example, as shown in fig. 6, the opening 111 is a groove 1111 and a through hole 1112, and the first inorganic layer 11 includes a non-boundary region C2 and a boundary region C1 located around the non-boundary region C2. Considering that the bending stress of the boundary region C1 of the first inorganic layer 11 is relatively large and the through hole 1112 is more beneficial to increase the contact area between the organic layer 12 and the first inorganic layer 11 than the groove 1111, the groove 1111 may be located in the non-boundary region C2 and the through hole 1112 may be located in the boundary region C1.
In a specific embodiment, as shown in fig. 7, a protective layer 13, a cover layer 14, and a cathode layer 15 are sequentially disposed on the side of the first inorganic layer 11 away from the organic layer 12. The capping layer 14 covers the cathode layer 15 for improving the light extraction efficiency of the cathode layer 15, and the protection layer 13 is used for protecting the capping layer 14, wherein the material of the protection layer 13 does not react with the material of the organic layer 12, for example, the material of the organic layer 12 is hexamethyldisiloxane, the material of the protection layer 13 is an inorganic substance that does not react with hexamethyldisiloxane, such as lithium chloride, so as to prevent the organic layer material penetrating through the opening 111 from reacting with the protection layer material.
Further, a light emitting function layer 16 and an anode layer 17 are sequentially disposed on the side of the cathode layer 15 away from the cover layer 14. The light emitting function layer 16 includes an electron injection layer, an electron transport layer, a light emitting layer, a hole transport layer, and a hole injection layer, which are sequentially distant from the cathode layer 15. When the display panel 10 operates, the light-emitting functional layer 16 emits light by recombination of electrons and holes, and light is emitted through the cathode layer 15 and the cover layer 14 in this order. The refractive index of the cover layer 14 is different from that of the cathode layer 15, for example, the refractive index of the cover layer 14 is greater than that of the cathode layer 15, so as to improve the light extraction efficiency of the display panel 10. For example, the material of the cover layer 14 is Alq (3, 8-hydroxyquinoline aluminum), and the material of the cathode layer 15 is a magnesium-silver alloy.
In another embodiment, with continued reference to FIG. 7, the display panel 10 further includes a second inorganic layer 18, the second inorganic layer 18 is disposed on the organic layer 12, and a boundary of the second inorganic layer 18 overlaps a boundary of the first inorganic layer 11.
The material of the second inorganic layer 18 may be one or more of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, tantalum nitride, titanium oxide, aluminum oxynitride, and silicon oxynitride.
Optionally, as shown in fig. 8, a plurality of grooves 121 are disposed on a side of the organic layer 12 away from the first inorganic layer 11, and the second inorganic layer 18 fills the plurality of grooves 121 and covers the organic layer 12 to increase a contact area between the organic layer 12 and the second inorganic layer 18, so as to enhance a bonding force between the organic layer 12 and the second inorganic layer 18 and improve stability of the display panel 10.
The cross section of the groove 121 may be one or more of a circle, a rectangle, a square, a diamond, an ellipse, an irregular geometric figure, and the like. Moreover, the cross section of the groove 121 is preferably semicircular, and the semicircular contact area is larger, so that the bonding force between the second inorganic layer 18 and the organic layer 12 can be better enhanced, and the stress between the films can be reduced.
Specifically, the organic layer 12 may be formed by inkjet printing, and a plurality of grooves 121 are formed on the side of the organic layer 12 away from the first inorganic layer 11 by using a roller. Further, the width of the groove 121 may exhibit a decreasing rule with an equal distance as the depth of the groove 121 increases, so as to further enhance the bonding force between the second inorganic layer 18 and the organic layer 12 and reduce the stress between the films.
Different from the prior art, the display panel in this embodiment includes first inorganic layer and sets up the organic layer on first inorganic layer, wherein, is provided with a plurality of openings on the first inorganic layer, and organic layer fills a plurality of openings and covers first inorganic layer to increase the cohesion of organic layer and first inorganic layer, can prevent effectively that the inorganic layer of film encapsulation from appearing crackle and peeling off in border department, and then improve the stability of OLED device.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present application. As shown in fig. 9, the display device 90 includes a driving circuit for supplying a driving voltage to the display panel 91 and the display panel 91 of any of the above embodiments.
The display panel 91 includes a first inorganic layer and an organic layer disposed on the first inorganic layer. The first inorganic layer is provided with a plurality of openings, and the organic layer fills the plurality of openings and covers the first inorganic layer.
In particular, the opening may be a through hole or/and a groove. For example, the opening is a groove and a via hole, and the first inorganic layer includes a non-boundary region and a boundary region located around the non-boundary region. Considering that the bending stress on the boundary region of the first inorganic layer is larger, and the through hole is more beneficial to increasing the contact area between the organic layer and the first inorganic layer than the groove, the groove can be located in the non-boundary region, and the through hole is located in the boundary region, so that the binding force between the organic layer and the first inorganic layer is more effectively increased, and the stability of the display panel is further improved.
Being different from prior art, the display device in this embodiment, display panel include first inorganic layer and set up the organic layer on first inorganic layer, wherein, are provided with a plurality of openings on the first inorganic layer, and organic layer fills a plurality of openings and covers first inorganic layer to increase the cohesion of organic layer and first inorganic layer, can prevent effectively that the inorganic layer of film encapsulation from appearing crackle and peeling off in border department, and then improve OLED device's stability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A display panel, comprising:
a first inorganic layer, and an organic layer disposed on the first inorganic layer,
the organic layer fills the openings and covers the first inorganic layer, the openings comprise first grooves and through holes, the first inorganic layer comprises a non-boundary area and a boundary area located around the non-boundary area, the first grooves are located in the non-boundary area, and the through holes are located in the boundary area;
the display panel further comprises a second inorganic layer, the second inorganic layer is arranged on the organic layer, the organic layer is far away from one side of the first inorganic layer and is provided with a plurality of second grooves, the second inorganic layer is filled with the second grooves and covers the organic layer, and the width of the second grooves is increased along with the depth of the second grooves, so that the rule that the distances between the second grooves are reduced progressively is presented.
2. The display panel according to claim 1, wherein the cross-section of the opening is one or more of circular, rectangular, square, diamond, and oval.
3. The display panel according to claim 1, wherein a protective layer, a covering layer, and a cathode layer are sequentially disposed on a side of the first inorganic layer away from the organic layer, and a material of the protective layer does not chemically react with a material of the organic layer.
4. A display device comprising a display panel according to any one of claims 1 to 3 and a driving circuit for supplying a driving voltage to the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404476.4A CN110165075B (en) | 2019-05-15 | 2019-05-15 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910404476.4A CN110165075B (en) | 2019-05-15 | 2019-05-15 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110165075A CN110165075A (en) | 2019-08-23 |
| CN110165075B true CN110165075B (en) | 2021-11-23 |
Family
ID=67634637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910404476.4A Active CN110165075B (en) | 2019-05-15 | 2019-05-15 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110165075B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063823A (en) * | 2019-12-09 | 2020-04-24 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode display panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328826A (en) * | 2016-10-24 | 2017-01-11 | 武汉华星光电技术有限公司 | OLED display device and fabrication method thereof |
| CN106684256A (en) * | 2016-12-23 | 2017-05-17 | 上海天马有机发光显示技术有限公司 | Display panel and fabrication method thereof |
| CN206610830U (en) * | 2017-04-07 | 2017-11-03 | 上海天马微电子有限公司 | Flexible display panel and display device |
| CN109461829A (en) * | 2018-08-30 | 2019-03-12 | 昆山国显光电有限公司 | A kind of display panel |
| CN109461830A (en) * | 2018-08-31 | 2019-03-12 | 云谷（固安）科技有限公司 | A kind of flexible display panels, display equipment and preparation method thereof |
| CN109817830A (en) * | 2019-01-31 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI466351B (en) * | 2010-02-05 | 2014-12-21 | Sony Corp | Organic el display and method of manufacturing the same |
| CN108461648B (en) * | 2018-03-07 | 2020-06-19 | 云谷（固安）科技有限公司 | Thin film package and display panel |
| CN109273492B (en) * | 2018-08-30 | 2021-06-01 | 云谷（固安）科技有限公司 | Display panel and display device |
-
2019
- 2019-05-15 CN CN201910404476.4A patent/CN110165075B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328826A (en) * | 2016-10-24 | 2017-01-11 | 武汉华星光电技术有限公司 | OLED display device and fabrication method thereof |
| CN106684256A (en) * | 2016-12-23 | 2017-05-17 | 上海天马有机发光显示技术有限公司 | Display panel and fabrication method thereof |
| CN206610830U (en) * | 2017-04-07 | 2017-11-03 | 上海天马微电子有限公司 | Flexible display panel and display device |
| CN109461829A (en) * | 2018-08-30 | 2019-03-12 | 昆山国显光电有限公司 | A kind of display panel |
| CN109461830A (en) * | 2018-08-31 | 2019-03-12 | 云谷（固安）科技有限公司 | A kind of flexible display panels, display equipment and preparation method thereof |
| CN109817830A (en) * | 2019-01-31 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110165075A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11849599B2 (en) | Display device having a sealing film including multiple layers | |
| CN207637803U (en) | A kind of display panel and display device | |
| EP2838132B1 (en) | Flexible display and method of manufacturing a flexible display | |
| US11785794B2 (en) | OLED package structure, display panel and method for preparing package structure | |
| KR102253531B1 (en) | Display device and method for manufacturing the same | |
| WO2020191875A1 (en) | Display panel and display device | |
| EP2460205B1 (en) | Encapsulated optoelectronic device and method for making the same | |
| WO2017049627A1 (en) | Package structure of a flexible organic electroluminescent device, and flexible display apparatus | |
| US20150036299A1 (en) | Flexible display device | |
| CN108461647B (en) | Packaging method and display device | |
| CN110739343B (en) | Display panel, preparation method thereof and display device | |
| CN109546002A (en) | Organic electroluminescent display panel and display device | |
| CN109273492B (en) | Display panel and display device | |
| CN108461645A (en) | A kind of encapsulating structure and preparation method on flexible display device | |
| CN110165075B (en) | Display panel and display device | |
| CN110752310B (en) | Flexible display panel, manufacturing method thereof and flexible display terminal | |
| KR102317715B1 (en) | Organic light emitting display apparatus and manufacturing the same | |
| WO2018192169A1 (en) | Oled encapsulation structure, oled encapsulation method and display panel | |
| US11264595B2 (en) | Display panel and method of manufacturing the same | |
| CN213845323U (en) | Curved surface screen packaging structure | |
| WO2023155266A1 (en) | Oled display panel and preparation method for oled display panel | |
| US20200083476A1 (en) | Encapsulation method of organic light emitting diode device and encapsulation structure encapsulated using same | |
| US20200185631A1 (en) | Packaging structure with groove | |
| CN112951870B (en) | Display panel, preparation method thereof and display device | |
| CN113299699B (en) | Display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |