CN111769140B - Display panel and display module - Google Patents
Display panel and display module Download PDFInfo
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- CN111769140B CN111769140B CN202010579081.0A CN202010579081A CN111769140B CN 111769140 B CN111769140 B CN 111769140B CN 202010579081 A CN202010579081 A CN 202010579081A CN 111769140 B CN111769140 B CN 111769140B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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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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- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The application provides a display panel and a display module, which comprise an array substrate, a pixel definition layer and a light emitting device layer, wherein the pixel definition layer and the light emitting device layer are arranged on the array substrate. The light emitting device layer includes an anode layer, a light emitting layer, and a cathode layer, the light emitting layer including a plurality of light emitting cells. According to the application, at least one first groove is arranged between two adjacent light-emitting units, so that the cathode layer is connected with the pixel definition layer through the first groove, the contact area between the cathode layer and the pixel definition layer is increased, the adhesion acting force between the film layers in the light-emitting device layer is improved, and the technical problem of separation of the film layers in the light-emitting device layer is avoided.
Description
Technical Field
The present application relates to the field of display, and in particular, to a display panel and a display module.
Background
Among flat panel display technologies, an Organic Light-Emitting Diode (OLED) display has many advantages of Light and thin, active Light emission, fast response speed, large visual angle, wide color gamut, high brightness, low power consumption, etc., and gradually becomes a third generation display technology following a liquid crystal display.
In the prior art, an OLED display panel is generally used as a flexible display panel, and in the process of curling or dynamic bending, the phenomenon of film separation occurs in the inner film layer of the light emitting device layer, so that the display panel has abnormal display technical problem.
Therefore, a display panel is needed to solve the above technical problems.
Disclosure of Invention
The application provides a display panel and a display module, which are used for solving the technical problem that the inner film layer of the conventional flexible display panel is separated in the bending or dynamic folding process.
In order to solve the problems, the technical scheme provided by the application is as follows:
the application provides a display panel, which comprises an array substrate, a pixel definition layer, a light-emitting device layer and a packaging layer, wherein the pixel definition layer and the light-emitting device layer are arranged on the array substrate;
the light-emitting device layer comprises an anode layer positioned on the array substrate, a light-emitting layer positioned on the anode layer, and a cathode layer positioned on the light-emitting layer, wherein the light-emitting layer comprises a plurality of light-emitting units;
at least one first groove is arranged between two adjacent light emitting units, and the cathode layer is connected with the pixel definition layer through the first groove.
In the display panel of the present application, the light emitting device layer further includes a first common layer between the anode layer and the light emitting layer, and a second common layer between the light emitting layer and the cathode layer;
the first groove penetrates through the first public layer and the second public layer so as to expose part of the pixel definition layer;
the first groove is located in a non-pixel area of the display panel.
In the display panel of the present application,
the display panel further includes a second groove on the pixel defining layer;
the orthographic projection of the second groove on the array substrate is positioned in the orthographic projection of the first groove on the array part, and the opening angle of the second groove is larger than or equal to the opening angle of the first groove;
wherein, a first groove corresponds to at least a second groove.
In the display panel of the present application, the second groove penetrates part of the pixel defining layer, and the cathode layer is connected with the pixel defining layer through the first groove and the second groove; or alternatively
The second groove penetrates through the pixel definition layer, and the cathode layer is connected with the pixel definition layer and the array substrate through the first groove and the second groove.
In the display panel of the present application,
the display panel further comprises at least one adhesive device arranged in the first groove;
the adhesive device is located on the pixel defining layer and is disposed adjacent to the second recess.
In the display panel of the present application, the material of the adhesive device includes propylene glycol methyl ether acetate, polyisobutylene, butyl rubber, microcrystalline wax, chloroform; alternatively, the adhesive device further comprises a black dye.
In the display panel of the present application, the display panel further includes a third groove located on the array substrate, and the third groove penetrates at least one film layer in the array substrate;
the orthographic projection of the third groove on the substrate of the array substrate is positioned in the orthographic projection of the second groove on the substrate, and the opening angle of the third groove is larger than or equal to the opening angle of the second groove;
wherein one of the second grooves corresponds to at least one of the third grooves.
In the display panel of the present application, the pixel defining layer corresponding to the first groove is further provided with at least one first convex surface and/or at least one first concave surface;
the cathode layer is arranged in a nested manner on the pixel definition layer through the first convex surface and/or the first concave surface.
In the display panel of the present application, the display panel further includes a filling layer located between the cathode layer and the encapsulation layer, the filling layer corresponding to the first groove;
wherein the filler layer is comprised of a flexible material.
The application also provides a display module, wherein the display panel comprises the display panel, a polaroid layer positioned on the display panel and a cover plate layer positioned on the polaroid layer.
The beneficial effects are that: the application provides a display panel which comprises an array substrate, a pixel definition layer and a light emitting device layer, wherein the pixel definition layer and the light emitting device layer are arranged on the array substrate. The light emitting device layer includes an anode layer, a light emitting layer including a plurality of light emitting cells, and a cathode layer. According to the application, at least one first groove is arranged between two adjacent light-emitting units, so that the cathode layer is connected with the pixel definition layer through the first groove, the contact area between the cathode layer and the pixel definition layer is increased, the adhesion acting force between the film layers in the light-emitting device layer is improved, and the technical problem of separation of the film layers in the light-emitting device layer is avoided.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a first block diagram of a display panel according to the present application;
FIG. 2 is a second construction diagram of the display panel of the present application;
FIG. 3 is a third construction diagram of the display panel of the present application;
FIG. 4 is a fourth block diagram of the display panel of the present application;
FIG. 5 is a fifth block diagram of the display panel of the present application;
FIG. 6 is a sixth construction diagram of a display panel according to the present application;
fig. 7 is a seventh structural view of the display panel of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only 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 fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
In the prior art, an OLED display panel is generally used as a flexible display panel, and in the process of curling or dynamic bending, the phenomenon of film separation occurs in the inner film layer of the light emitting device layer, so that the display panel has abnormal display technical problem. The application provides the following technical scheme to solve the technical problems.
Referring to fig. 1 to 7, the present application provides a display panel 100, which includes an array substrate 10, a pixel defining layer 20 and a light emitting device layer 30 disposed on the array substrate 10, and a packaging layer 40 disposed on the light emitting device layer 30;
the light emitting device layer 30 includes an anode layer 31 on the array substrate 10, a light emitting layer 32 on the anode layer 31, and a cathode layer 33 on the light emitting layer 32, the light emitting layer 32 including a plurality of light emitting units;
at least one first groove 51 is disposed between two adjacent light emitting units, and the cathode layer 33 is connected to the pixel defining layer 20 through the first groove 51.
The display panel 100 according to the present application includes an array substrate 10, a pixel defining layer 20 on the array substrate 10, and a light emitting device layer 30. The light emitting device layer 30 includes an anode layer 31, a light emitting layer 32, and a cathode layer 33, and the light emitting layer 32 includes a plurality of light emitting cells. According to the application, at least one first groove 51 is arranged between two adjacent light emitting units, so that the cathode layer 33 is connected with the pixel definition layer 20 through the first groove 51, the contact area between the cathode layer 33 and the pixel definition layer 20 is increased, the adhesion acting force between the inner film layers of the light emitting device layer 30 is improved, and the technical problem of separation of the inner film layers of the light emitting device layer 30 is avoided
The technical scheme of the present application will now be described with reference to specific embodiments.
Example 1
Referring to fig. 1, the array substrate 10 may include a substrate 11 and a thin film transistor layer 12 disposed on the substrate 11. The substrate 11 may be a flexible substrate or a rigid substrate. When the substrate 11 is a flexible substrate, the substrate 11 may be made of glass, quartz, or the like. When the substrate 11 is a flexible substrate, the material of the substrate 11 may be polyimide or the like. In contrast, since the display panel 100 of the present application is a flexible display panel 100, the substrate 11 of the present application is provided with a flexible substrate in order to secure the flexibility of the display panel 100 described above, and the material of the flexible substrate is not limited to the polyimide described above.
The thin film transistor layer 12 may include a plurality of thin film transistors. The thin film transistor may be of an etch-stop type, a back channel etch type, or a top gate thin film transistor type, and the like, and is not particularly limited.
For example, the thin film transistor of the top gate thin film transistor may include an active layer 121 on the substrate 11, a gate insulating layer 122 on the active layer 121, a gate layer 123 on the gate insulating layer 122, an inter insulating layer 124 on the gate layer 123, a source drain layer 125 on the inter insulating layer 124, and a planarization layer 126 on the source drain layer 125.
In the present embodiment, the top gate thin film transistor described above is not limited to the single gate structure, but may be provided as a double gate structure or the like.
Referring to fig. 1, the light emitting device layer 30 includes an anode layer 31, a light emitting layer 32 and a cathode layer 33 formed on the array substrate 10.
The anode layer 31 is formed on the planarization layer 126. The anode layer 31 is mainly used for providing holes for absorbing electrons. In the present embodiment, a top-emitting OLED device is described as an example, and thus the anode layer 31 may be a non-transparent or transparent metal electrode.
The light emitting layer 32 is formed on the anode layer 31. The light emitting layer 32 is divided into a plurality of light emitting cells by the pixel defining layer 20.
The cathode layer 33 is formed on the light emitting layer 32. The cathode layer 33 covers the light emitting layer 32 and the pixel defining layer 20 on the planarization layer 126.
In the present embodiment, materials of the anode layer 31 and the cathode layer 33 may be defined according to the light emission type of the display panel 100. For example, when the display panel 100 is a top emission type display panel 100, the anode layer 31 may be formed of a total reflection material, and the cathode layer 33 may be formed of a semi-reflection material. When the display panel 100 is a bottom emission type display panel 100, the materials of the cathode layer 33 and the anode layer 31 are interchanged.
Wherein, the light emitting device layer 30 forms a microcavity effect by total reflection and half reflection of the anode layer 31 and the cathode layer 33 to improve the light emitting efficiency of the light emitting device layer 30.
Referring to fig. 1, the light emitting device layer 30 further includes a first common layer 34 between the anode layer 31 and the light emitting layer 32, and a second common layer 35 between the light emitting layer 32 and the cathode layer 33.
In this embodiment, the first common layer 34 may further include a hole transport layer and a hole injection layer, and the second common layer 35 may further include an electron transport layer and an electron injection layer, which are made of the same materials as those in the prior art, and will not be described herein.
In this embodiment, the first groove 51 penetrates the first common layer 34 and the second common layer 35, so that a portion of the pixel defining layer 20 is exposed, and the cathode layer 33 is connected to the pixel defining layer 20 through the first groove 51, so as to increase the contact panel between the cathode layer 33 and the pixel defining layer 20.
In this embodiment, the first recess 51 is located in the non-pixel area of the display panel 100.
In this embodiment, a certain inclination angle exists between the first groove 51 and the boundary of the pixel defining layer 20, and the opening angle of the first groove 51 is 0 ° to 90 °.
Referring to fig. 2, at least one first protrusion 21 located on the pixel defining layer 20 is further disposed in the first recess 51. The first bump 21 may be formed of the first common layer 34 and the second common layer 35 after patterning, or may be formed of other adhesive materials, organic materials, or the like, which are not particularly limited herein.
In this embodiment, the arrangement of the first protrusion 21 increases the contact area between the cathode layer 33 and other film structures in the light emitting device layer 30, improves the acting force between the film structures in the light emitting device, and effectively avoids the technical problem of film separation of the display panel 100 in a bending or dynamic bending state.
Referring to fig. 3, the front projection plane of the first common layer 34 on the array substrate 10 is within the front projection plane of the second common layer 35 on the array substrate 10. The second common layer 35 fully covers the first common layer 34, which increases the contact area between the first common layer 34 and the second common layer 35, further improves the acting force between the film layers in the light emitting device, and avoids the technical problem of film separation of the display panel 100 in a bending or dynamic bending state.
Example two
This embodiment is the same as or similar to embodiment one, except that:
referring to fig. 4, the display panel 100 further includes a second recess 52 on the pixel defining layer 20.
In this embodiment, the orthographic projection of the second groove 52 on the array substrate 10 is located in the orthographic projection of the first groove 51 on the array substrate 10. One of the first grooves 51 corresponds to at least one of the second grooves 52.
In terms of the process, the first grooves 51 may be first formed on the first common layer 34 and the second common layer 35 using the first etching; next, at least one of the second grooves 52 is formed on the basis of the first groove 51 by means of a second etching.
In this embodiment, the opening angle of the second groove 52 is greater than or equal to the opening angle of the first groove 51. The opening angle of the second groove 52 is larger than that of the first groove 51, which not only reduces the difficulty of the manufacturing process, but also further increases the contact area between the cathode layer 33 and the pixel defining layer 20 in the second groove 52, and improves the acting force between the film layers in the light emitting device.
Referring to fig. 4, the second groove 52 penetrates a portion of the pixel defining layer 20, and the cathode layer 33 is connected to the pixel defining layer 20 through the first groove 51 and the second groove 52.
On the basis of fig. 4, the second groove 52 may also penetrate through the pixel defining layer 20, and the cathode layer 33 is connected to the pixel defining layer 20 and the flat layer 126 of the array substrate 10 through the first groove 51 and the second groove 52.
Referring to fig. 5, on the basis of fig. 4, the display panel 100 further includes at least one adhesive device 22 disposed in the first recess 51, and the adhesive device 22 may be disposed on the pixel defining layer 20.
In this embodiment, the adhesive means 22 may be disposed adjacent to the second recess 52.
In this embodiment, the material of the adhesive means 22 may include propylene glycol methyl ether acetate, polyisobutylene, butyl rubber, microcrystalline wax, and chloroform. Wherein propylene glycol methyl ether acetate is a solvent that may be used to dissolve other substances in the material of adhesive device 22. The addition of the chloroform may better improve the adhesion between the material of the adhesive device 22 and the light emitting device layer 30.
In this embodiment, the adhesive device 22 is prepared by adding the following materials in mass percent: 54% propylene glycol methyl ether acetate, 23% polyisobutylene, 18% butyl rubber, 3% microcrystalline wax, and 2% chloroform. After the preparation of the raw materials, the solvent of the material of the adhesive device 22, that is, the propylene glycol methyl ether acetate, may be separated out by drying under reduced pressure, and finally the remaining propylene glycol methyl ether acetate accounts for less than 10% of the original mass fraction. Finally, the patterning process is performed to form the adhesive device 22 on the pixel defining layer 20, which reduces the energy loss and difficulty of the drying process, and appropriately increases the flexibility of the material of the adhesive device 22, thereby better improving the stress when the display panel 100 is distorted.
In another embodiment of the present application, the material of the adhesive means 22 comprises propylene glycol methyl ether acetate, polyisobutylene, butyl rubber, microcrystalline wax, chloroform, and black dye. The addition of the black dye can make the adhesive device 22 serve as a black shading layer in the color film layer, so that the thickness of the color film layer can be reduced, and color mixing between adjacent light emitting units can be avoided.
Example III
This embodiment is the same as or similar to the first embodiment or the second embodiment, except that:
referring to fig. 6, the display panel 100 may further include a third groove 53 disposed on the array substrate 10, where the third groove 53 penetrates at least one film layer in the array substrate 10.
The orthographic projection of the third groove 53 on the substrate 11 of the array substrate 10 is located in the orthographic projection of the second groove 52 on the substrate 11, and one second groove 52 corresponds to at least one third groove 53.
In terms of the process, the first grooves 51 may be first formed on the first common layer 34 and the second common layer 35 using the first etching; next, at least one of the second grooves 52 is formed on the basis of the first groove 51 by means of a second etching; finally, at least one third recess 53 is formed on the basis of the second recess 52 by means of a third etch.
In this embodiment, the opening angle of the third groove 53 is greater than or equal to the opening angle of the second groove 52. Similar to the embodiment, the opening angle of the third groove 53 is larger than that of the second groove 52, so that not only the difficulty of the manufacturing process can be reduced, but also the contact area between the cathode layer 33 and the film layer in the third groove 53 can be further increased, the acting force between the film layers in the light emitting device can be improved, and the acting force between the cathode layer 33 and the array substrate 10 can be also improved.
In this embodiment, the third recess 53 may extend through a portion of the planar layer 126. Alternatively, the third grooves 53 may extend through all of the flat layers 126, or through an insulating film layer disposed adjacent to the flat layers 126.
In the above-mentioned first to third embodiments, at least one first convex surface and/or at least one first concave surface are further disposed on the pixel defining layer 20 corresponding to the first groove 51, and the cathode layer 33 is disposed in a nested manner on the pixel defining layer 20 through the first convex surface and/or the first concave surface.
In this embodiment, by providing a plurality of first convex surfaces or/and first concave surfaces on the pixel defining layer 20 corresponding to the first groove 51, the contact panel between the pixel defining layer 20 and the cathode layer 33 is further increased, so as to improve the acting force between the film layers in the light emitting device layer 30.
In this embodiment, the surfaces of the second groove 52 and the third groove 53 may be provided with corresponding convex surfaces and concave surfaces. The shapes of the corresponding concave and convex surfaces can be triangle, cambered surface and the like, and the application is not particularly limited.
Referring to fig. 7, the display panel 100 may further include a filling layer 50 between the cathode layer 33 and the encapsulation layer 40, wherein the filling layer 50 corresponds to the first recess 51. The first recess 51 penetrates the first common layer 34, the second common layer 35, and the pixel defining layer 20.
In this embodiment, the filler layer 50 is comprised of a flexible material.
The filling layer 50 is used for filling up the light emitting device layer 30 to ensure flatness of the panel. In addition, the filling layer 50 may be used as a fastener to embed the cathode layer 33 in the light-emitting device layer 30, so as to further avoid separation of the cathode layer 33 from the inner film layer of the light-emitting device layer 30.
In this embodiment, the material of the filling layer 50 may be the same as that of the adhesive device, and the adhesion of the filling layer 50 increases the force between the light emitting device layer 30 and the encapsulation layer 40.
In the above embodiment, the encapsulation layer 40 may be a thin film encapsulation layer, which may include a first inorganic layer, a first organic layer on the first inorganic layer, and a second inorganic layer on the first organic layer. The specific structure is the same as or similar to the prior art, and will not be described here again.
The application also provides a display module, wherein the display panel comprises the display panel, a polaroid layer positioned on the display panel and a cover plate layer positioned on the polaroid layer. The working principle of the display module is the same as or similar to that of the display panel, and no trace back is performed here.
The application provides a display panel and a display module, comprising an array substrate, a pixel definition layer and a light emitting device layer, wherein the pixel definition layer and the light emitting device layer are arranged on the array substrate. The light emitting device layer includes an anode layer, a light emitting layer including a plurality of light emitting cells, and a cathode layer. According to the application, at least one first groove is arranged between two adjacent light-emitting units, so that the cathode layer is connected with the pixel definition layer through the first groove, the contact area between the cathode layer and the pixel definition layer is increased, the adhesion acting force between the film layers in the light-emitting device layer is improved, and the technical problem of separation of the film layers in the light-emitting device layer is avoided.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing has described in detail an electronic device provided by embodiments of the present application, and specific examples have been applied to illustrate the principles and embodiments of the present application, where the foregoing examples are only for aiding in understanding of the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (8)
1. The display panel is characterized by comprising an array substrate, a pixel definition layer, a light-emitting device layer and a packaging layer, wherein the pixel definition layer and the light-emitting device layer are arranged on the array substrate;
the light-emitting device layer comprises an anode layer positioned on the array substrate, a light-emitting layer positioned on the anode layer, and a cathode layer positioned on the light-emitting layer, wherein the light-emitting layer comprises a plurality of light-emitting units;
at least one first groove is arranged between two adjacent light emitting units, and the cathode layer is connected with the pixel definition layer through the first groove;
the display panel further comprises a filling layer located between the cathode layer and the packaging layer, the filling layer corresponds to the first groove, the filling layer is used for filling the first groove on the light-emitting device layer, the surface of the filling layer, which is far away from one side of the array substrate, and the surface of the cathode layer, which is far away from one side of the array substrate, are located on the same plane, and the filling layer is made of flexible materials or adhesive materials.
2. The display panel of claim 1, wherein the light-emitting device layer further comprises a first common layer between the anode layer and the light-emitting layer, and a second common layer between the light-emitting layer and the cathode layer;
the first groove penetrates through the first public layer and the second public layer so as to expose part of the pixel definition layer;
the first groove is located in a non-pixel area of the display panel.
3. The display panel of claim 1, further comprising a second groove on the pixel defining layer, wherein a front projection of the second groove on the array substrate is located in a front projection of the first groove on the array member, and an opening angle of the second groove is greater than or equal to an opening angle of the first groove;
the display panel further comprises at least one adhesive device arranged in the first groove, wherein the adhesive device is positioned on the pixel definition layer and is arranged close to the second groove.
4. A display panel according to claim 3, wherein the second recess penetrates part of the pixel defining layer, and the cathode layer is connected to the pixel defining layer through the first recess and the second recess; or alternatively
The second groove penetrates through the pixel definition layer, and the cathode layer is connected with the pixel definition layer and the array substrate through the first groove and the second groove.
5. A display panel according to claim 3, wherein the material of the adhesive device comprises propylene glycol methyl ether acetate, polyisobutylene, butyl rubber, microcrystalline wax, trichloromethane; alternatively, the adhesive device further comprises a black dye.
6. The display panel of claim 3, further comprising a third recess in the array substrate, the third recess extending through at least one membrane layer in the array substrate;
the orthographic projection of the third groove on the substrate of the array substrate is positioned in the orthographic projection of the second groove on the substrate, and the opening angle of the third groove is larger than or equal to the opening angle of the second groove;
wherein one of the second grooves corresponds to at least one of the third grooves.
7. The display panel according to claim 1, wherein the pixel defining layer corresponding to the first groove is further provided with at least one first convex surface and/or at least one first concave surface;
the cathode layer is nested with the pixel definition layer by the first convex surface and/or the first concave surface.
8. A display module comprising the display panel of any one of claims 1 to 7, a polarizer layer on the display panel, and a cover layer on the polarizer layer.
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| CN202010579081.0A CN111769140B (en) | 2020-06-23 | 2020-06-23 | Display panel and display module |
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| CN202010579081.0A CN111769140B (en) | 2020-06-23 | 2020-06-23 | Display panel and display module |
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| KR102453921B1 (en) * | 2015-09-03 | 2022-10-13 | 삼성디스플레이 주식회사 | Organic light emitting display and manufacturing method thereof |
| JP2017083517A (en) * | 2015-10-23 | 2017-05-18 | 株式会社ジャパンディスプレイ | Display device and manufacturing method of the same |
| CN106449702B (en) * | 2016-09-20 | 2019-07-19 | 上海天马微电子有限公司 | A kind of organic light emitting display panel and production method |
| CN109166882B (en) * | 2018-08-01 | 2020-07-24 | 云谷（固安）科技有限公司 | Display panel, forming method thereof and display device |
| CN109378328B (en) * | 2018-09-28 | 2021-07-09 | 广州国显科技有限公司 | OLED display panel and OLED display device |
| CN110112195A (en) * | 2019-04-30 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | Display panel |
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2020
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