CN114613921A - Display panel and mobile terminal - Google Patents
Display panel and mobile terminal Download PDFInfo
- Publication number
- CN114613921A CN114613921A CN202210194532.8A CN202210194532A CN114613921A CN 114613921 A CN114613921 A CN 114613921A CN 202210194532 A CN202210194532 A CN 202210194532A CN 114613921 A CN114613921 A CN 114613921A
- Authority
- CN
- China
- Prior art keywords
- retaining wall
- display panel
- layer
- organic layer
- organic
- 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.)
- Pending
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
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
Abstract
The embodiment of the application provides a display panel and a mobile terminal; the display panel comprises a light-emitting functional layer, an encapsulation layer and a retaining wall, wherein the encapsulation layer comprises a first inorganic layer and an organic layer arranged on the first inorganic layer, the retaining wall is of an annular structure and is arranged around the edge of the organic layer, one side of the retaining wall facing the organic layer is also provided with a plurality of grooves arranged at intervals, and the grooves do not penetrate through the retaining wall; above-mentioned display panel is the barricade of loop configuration through the edge on organic layer around the one deck, and the barricade still is provided with the recess that a plurality of intervals set up towards one side on organic layer, the barricade is not run through to the recess, the recess can play the effect of drainage to the organic ink material that forms organic layer, can improve the edge of barricade and the incomplete phenomenon of organic ink material filling of corner position department, improve the phenomenon that organic ink material spills over the barricade simultaneously, thereby reduce the uneven problem of edge thickness on organic layer, and then effectively promoted display panel's encapsulation effect.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a mobile terminal.
Background
Organic Light Emitting diode (oled) has been paid much attention and developed because of its flexibility, fast response time, wide color gamut, low energy consumption, and other features. The OLED is composed of an anode, a cathode, and one or more layers of organic materials between the electrodes, and excitons are formed by recombination of holes and electrons injected from the anode and the cathode in an organic light emitting layer and are emitted by radiative transition of the excitons. However, the metal cathode and the organic material in the OLED are susceptible to moisture and oxygen, so that the efficiency of the OLED decreases and fails, and the service life of the OLED is affected. Therefore, the OLED has high requirements on water and oxygen insulation, and the OLED has a packaging effect which greatly influences the performance and the service life of the OLED.
At present, the OLED packaging mainly adopts a thin film packaging technology, and a plurality of layers of inorganic/organic thin films are alternately deposited on an OLED device, so that the purpose of isolating water and oxygen is achieved. The organic thin film in the thin film packaging technology is mainly a resin high-molecular thin film, and the method mainly comprises the steps of spraying resin high-molecular solution on a packaging area in an ink-jet printing mode, leveling the solution in the packaging area after a period of time, and finally curing the solution in the packaging area in a UV (ultraviolet) or baking or other modes, so that a continuous thin film is formed in the area needing packaging. However, when the polymer solution is leveled on the surface of the encapsulation region, the thickness of the polymer solution may not be uniform at the edge or corner of the encapsulation region, thereby affecting the overall encapsulation performance, and further affecting the performance and the service life of the OLED.
Therefore, a display panel and a mobile terminal are needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a display panel and a mobile terminal, which can solve the technical problem that the thickness of an organic layer in an encapsulation layer of the current display panel is not uniform at the edge or corner of an encapsulation area.
The embodiment of the application provides a display panel, which comprises a luminous functional layer, an encapsulation layer and a retaining wall, wherein the encapsulation layer and the retaining wall are arranged on the luminous functional layer, the encapsulation layer comprises a first inorganic layer and an organic layer arranged on the first inorganic layer, and the retaining wall is of an annular structure and is arranged around the edge of the organic layer;
the retaining wall faces one side of the organic layer is further provided with a plurality of grooves arranged at intervals, and the grooves do not penetrate through the retaining wall.
Optionally, in some embodiments of the present application, the retaining wall has a plurality of corners, and each corner of the retaining wall is located at a side facing the organic layer and provided with the groove.
Optionally, in some embodiments of the present application, a plurality of grooves are disposed at intervals on a side of the retaining wall facing the organic layer, where the retaining wall is located between two adjacent corners.
Optionally, in some embodiments of the present application, the retaining wall includes a first sub-retaining wall or a second sub-retaining wall disposed between two adjacent corners, and a length of the first sub-retaining wall is greater than a length of the second sub-retaining wall;
the first sub-retaining wall is provided with a plurality of first sub-grooves, the second sub-retaining wall is provided with a plurality of second sub-grooves, and the distance between every two adjacent first sub-grooves is larger than the distance between every two adjacent second sub-grooves.
Optionally, in some embodiments of the present application, a depth of the groove corresponding to each corner position is greater than a depth of the first sub-groove or the second sub-groove.
Optionally, in some embodiments of the present application, the depth of the groove increases from a side away from the organic layer to a side close to the organic layer.
Optionally, in some embodiments of the present application, the retaining wall is provided with a plurality of grooves along a height direction of the retaining wall, and a distance between two adjacent grooves is equal.
Optionally, in some embodiments of the present application, the display panel further includes a second inorganic layer disposed on the organic layer;
wherein, in the top view direction of the display panel, the orthographic projection of the retaining wall on the display panel is positioned in the second inorganic layer.
Optionally, in some embodiments of the present application, the material of the retaining wall is an organic photoresist material, and the size of the opening of the groove ranges from 1 μm to 20 μm.
Correspondingly, the embodiment of the application also provides a mobile terminal, which comprises a terminal main body and the display panel, wherein the terminal main body and the spliced display panel are combined into a whole.
The embodiment of the application provides a display panel and a mobile terminal; the display panel comprises a light-emitting functional layer, an encapsulation layer and a retaining wall, wherein the encapsulation layer and the retaining wall are arranged on the light-emitting functional layer, the encapsulation layer comprises a first inorganic layer and an organic layer arranged on the first inorganic layer, the retaining wall is of an annular structure and is arranged around the edge of the organic layer, a plurality of grooves which are arranged at intervals are further arranged on one side, facing the organic layer, of the retaining wall, and the grooves do not penetrate through the retaining wall; above-mentioned display panel is through the edge on organic layer is the loop configuration around the one deck the barricade, just the barricade orientation one side on organic layer still is provided with the recess that a plurality of intervals set up, the recess does not run through the barricade, the recess can be to forming organic ink material on organic layer plays the effect of drainage, can improve the incomplete phenomenon of organic ink material packing is located to the edge and the corner position of barricade, improves organic ink material simultaneously and spills over the phenomenon of barricade, thereby solves the problem that the edge thickness on organic layer is uneven, and then has effectively promoted display panel's encapsulation effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 partial cross-sectional view of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic view illustrating a first planar structure of a retaining wall in a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a second planar structure of a retaining wall in a display panel according to an embodiment of the present disclosure;
fig. 4 is a schematic plan view of a third structure of a retaining wall in a display panel according to an embodiment 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application aims at the technical problem that the current display panel is difficult to realize low-cost detection of the ambient light, and can improve the technical problem.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 4, an embodiment of the present application provides a display panel 100, including a light emitting functional layer 20, an encapsulation layer 30 disposed on the light emitting functional layer 20, and a retaining wall 40, where the encapsulation layer 30 includes a first inorganic layer 31 and an organic layer 32 disposed on the first inorganic layer 31, and the retaining wall 40 is in a ring structure and disposed around an edge of the organic layer 32;
wherein, one side of the retaining wall 40 facing the organic layer 32 is further provided with a plurality of grooves 401 arranged at intervals, and the grooves 401 do not penetrate through the retaining wall 40.
Above-mentioned display panel 100 is through the edge of organic layer 32 is the loop configuration around the one deck barricade 40, just barricade 40 orientation one side of organic layer 32 still is provided with the recess 401 that a plurality of intervals set up, recess 401 does not run through barricade 40, recess 401 can be to forming organic ink material of organic layer 32 plays the effect of drainage, can improve the incomplete phenomenon of organic ink material filling is located at the edge of barricade 40 and corner position, improves organic ink material simultaneously and spills over barricade 40's phenomenon, thereby solves the uneven problem of edge thickness of organic layer 32, and then has effectively promoted display panel 100's encapsulation effect.
The technical solution of the present application will now be described with reference to specific embodiments.
Example one
As shown in fig. 1, fig. 1 is a schematic partial cross-sectional structure diagram of a display panel 100 according to an embodiment of the present disclosure; the display panel 100 includes a substrate 10, a light emitting function layer 20 disposed on the substrate 10, and an encapsulation layer 30 disposed on the substrate 10 and covering the light emitting function layer 20. The encapsulation layer 30 includes a first inorganic layer 31 disposed on the substrate 10 and covering the light emitting function layer 20, an organic layer 32 disposed on the first inorganic layer 31, and a second inorganic layer 33 disposed on the first organic layer 32 and covering the organic layer 32;
the display panel 100 further includes a retaining wall 40, wherein the retaining wall 40 is an annular structure and surrounds the edge of the organic layer 32.
In the embodiment of the present application, the substrate 10 may be a flexible substrate or a rigid substrate. Specifically, the flexible substrate may be made of plastic material such as Polyimide (PI). It is understood that the substrate 10 may also be a rigid substrate such as glass, so as to obtain the display panel 100 that cannot be curled.
In the embodiment of the present application, the substrate 10 is formed with the light-emitting functional layer 20, and the light emission of the display panel 100 is realized by the light-emitting functional layer 20. The light emitting function layer 20 is formed by stacking a plurality of layers. Specifically, the light-emitting functional layer 20 includes a plurality of thin film transistors arranged in an array, a planarization layer formed on the thin film transistors, an anode layer stacked on the planarization layer and electrically connected to the thin film transistors through via holes, and a pixel defining layer stacked on the anode layer, where the pixel defining layer includes a plurality of pixel regions arranged in an array at intervals, and a light-emitting material is deposited in each of the pixel regions. A cathode layer is further formed on the pixel defining layer, and the pixel region emits light with different brightness through the current change between the anode layer and the cathode layer, so as to realize the image display of the display panel 100.
Further, the thin film transistor may be a top gate thin film transistor or a bottom gate thin film transistor.
In the embodiment of the present application, the retaining wall 40 is disposed around the edge of the organic layer 32, and the second inorganic layer 33 covers the organic layer 32 and the retaining wall 40, so as to prevent the invasion of water, oxygen, etc., and achieve a good encapsulation effect.
Specifically, each layer of the encapsulation layer 30 is formed in the following manner: depositing a first inorganic layer 31 of the encapsulation layer 30 on the light emitting function layer 20 by any one of a single Atomic Layer Deposition (ALD), a pulsed laser thin film deposition (PLD), sputtering (Sputter), Plasma Enhanced Chemical Vapor Deposition (PECVD), etc., wherein the material of the first inorganic layer 31 includes, but is not limited to, SiNx、SiOxNy、SiOx、SiCxNy、ZnO、AlOx. The first inorganic layer 31 covers the display area of the display panel 100, and the outer edge of the first inorganic layer does not exceed the retaining wall 40. Preferably, the thickness of the first inorganic layer 31 is between 50nm and 2 μm.
Thereafter, the organic layer 32 in the encapsulation layer 30 is deposited on the first inorganic layer 31 by means of Ink Jet Printing (IJP), and the material of the organic layer 32 includes, but is not limited to, a high molecular material, typically epoxy resin, or acrylic material. Wherein, the organic layer 32 can cover the light-emitting function layer 20, and the outer boundary of the organic layer 32 does not exceed the retaining wall 40. Preferably, the organic layer 32 has a thickness of between 1 μm and 20 μm. The organic layer 32 is formed by curing the polymer liquid material by ultraviolet light or thermal baking.
Finally, the second inorganic layer 33 is deposited on the organic layer 32 by any one of a single Atomic Layer Deposition (ALD), a pulsed laser thin film deposition technique (PLD), sputtering (Sputter), Plasma Enhanced Chemical Vapor Deposition (PECVD), and the like, and the material of the second inorganic layer 33 includes, but is not limited to, SiNx、SiOxNy、SiOx、SiCxNy、ZnO、AlOxAnd the like. The material of the second inorganic layer 33 and the material of the first inorganic layer 31 may be the same or different, and the outer boundary of the second inorganic layer 33 exceeds the retaining wall 40. In the top view direction of the display panel 100, the orthographic projection of the retaining wall 40 on the substrate 10 is located in the second inorganic layer 33. Preferably, the thickness of the first inorganic layer 31 is between 50nm and 2 μm.
Fig. 2 is a schematic view illustrating a first plane structure of a retaining wall 40 in a display panel 100 according to an embodiment of the present disclosure; wherein, one side of the retaining wall 40 facing the organic layer 32 is further provided with a plurality of grooves 401 arranged at intervals, and the grooves 401 do not penetrate through the retaining wall 40.
In the embodiment of the present application, the retaining wall 40 has a plurality of corners (4 in the embodiment of the present application), and the groove 401 is disposed at each corner of the retaining wall 40 toward one side of the organic layer 32. The groove 401 is disposed at each corner position of the retaining wall 40, and the groove 401 is in an annular structure and disposed around the edge of the organic layer 32, so that the micro opening of the groove 401 has a drainage effect on the polymer organic ink material forming the organic layer 32, and the incomplete filling condition of the polymer organic ink material at the corner position can be improved; meanwhile, because the retaining wall 40 is additionally provided with the groove 401, the risk of overflow of the retaining wall 40 to the high-molecular organic ink material is reduced, and the technological boundary corresponding to ink-jet printing is increased.
Further, the depth of the groove 401 increases from the side away from the organic layer 32 to the side close to the organic layer 32. The arrangement can slow down the flow rate of the polymer organic ink material flowing to the bottom of the groove 401 along the opening of the groove 401, further improve the incomplete filling condition of the polymer organic ink material at the corner position, and further reduce the risk of the polymer organic ink material overflowing from the corner position.
Further, the retaining wall 40 is provided with a plurality of grooves 401 along the height direction of the retaining wall 40, and the distance between two adjacent grooves 401 is equal. That is, in the embodiment of the present application, each corner position of the retaining wall 40 is provided with a plurality of the grooves 401 on the side facing the organic layer 32. In the above arrangement, the retaining wall 40 is provided with a plurality of the grooves 401 corresponding to the same corner position, and the distance between two adjacent grooves 401 is equal, so as to extend the flow path of the polymer organic ink material forming the organic layer 32, thereby further improving the incomplete filling condition of the polymer organic ink material at the corner position, and further reducing the risk that the polymer organic ink material overflows from the corner position.
In the embodiment of the present application, the bottom of the groove 401 may be a flat surface or an arc surface. When the bottom of the groove 401 is an arc surface, the flow speed of the polymer organic ink material flowing to the bottom of the groove 401 can be further reduced, the condition that the polymer organic ink material is incompletely filled at the corner position can be further improved, and the risk that the polymer organic ink material overflows from the corner position is further reduced.
In the embodiment of the present application, the material of the retaining wall 40 may include, but is not limited to, acrylate, epoxy, polyimide, silicone, organic photoresist, and the like. Further, the height of the retaining wall 40 ranges from 2 μm to 20 μm, and the width of the retaining wall 40 ranges from 30 μm to 100 μm. If the height of the retaining wall 40 is less than 2 μm, the risk of the polymer organic ink material overflowing from the retaining wall 40 is easily caused, and if the height of the retaining wall 40 is greater than 20 μm, the film thickness of the second inorganic layer 33 is increased, thereby increasing the manufacturing cost of the encapsulation layer 30; if the width of the retaining wall 40 is less than 30 μm, the pressure of the polymer organic ink material contacting the retaining wall 40 is increased, and the liquid surface tension of the polymer organic ink material is increased, so as to increase the problem of uneven thickness of the edge and the middle of the organic layer 32, and if the width of the retaining wall 40 is greater than 100 μm, the coverage area of the second inorganic layer 33 is increased, and the manufacturing cost of the packaging layer 30 is increased.
In the embodiment of the present application, the opening size of the groove 401 ranges from 1 μm to 20 μm. If the opening of the groove 401 is smaller than 1 μm, the capillary force generated by the groove 401 will accelerate the flow rate of the polymer organic ink material to the groove 401, and further increase the risk of the polymer organic ink material overflowing from the corner; if the opening of the groove 401 is larger than 20 μm, the groove 401 cannot generate a blocking effect on the polymer organic ink material, and thus cannot slow down the flow rate of the polymer organic ink material.
Aiming at the technical problem that the current display panel 100 is difficult to realize low-cost detection of ambient light, the embodiment of the present application provides a display panel 100; the display panel 100 comprises a light-emitting functional layer 20, an encapsulation layer 30 and a retaining wall 40, wherein the encapsulation layer 30 is arranged on the light-emitting functional layer 20, the encapsulation layer 30 comprises a first inorganic layer 31 and an organic layer 32 arranged on the first inorganic layer 31, the retaining wall 40 is in an annular structure and is arranged around the edge of the organic layer 32, wherein a plurality of grooves 401 arranged at intervals are further arranged at each corner position of the retaining wall 40 towards one side of the organic layer 32, and the grooves 401 do not penetrate through the retaining wall 40; above-mentioned display panel 100 is through the edge of organic layer 32 is the loop configuration around the one deck barricade 40, just every corner position orientation of barricade 40 one side of organic layer 32 still is provided with the recess 401 that a plurality of intervals set up, recess 401 does not run through barricade 40, recess 401 can be to forming the organic ink material of organic layer 32 plays the effect of drainage, can improve every corner position department organic ink material incomplete filling phenomenon of barricade 40 improves simultaneously organic ink material overflows the phenomenon of barricade 40, thereby solves the uneven problem of edge thickness of organic layer 32, and then has effectively promoted display panel 100's packaging effect.
Example two
Fig. 3 is a schematic diagram illustrating a second plane structure of the retaining wall 40 in the display panel 100 according to the embodiment of the present application; the structure of the retaining wall 40 in the display panel 100 in the second embodiment of the present application is the same as or similar to the structure of the retaining wall 40 in the display panel 100 in the first embodiment of the present application, except that two adjacent retaining walls 40 facing the organic layer 32 are provided with a plurality of grooves 401 at intervals, and the positions of the retaining walls 40 corresponding to the corners are not provided with the grooves 401.
Further, the retaining wall 40 includes a first sub-retaining wall 41 or a second sub-retaining wall 42 disposed between two adjacent corners, and the length of the first sub-retaining wall 41 is greater than that of the second sub-retaining wall 42;
wherein, a plurality of first sub-grooves 411 are arranged on the first sub-retaining wall 41, a plurality of second sub-grooves 421 are arranged on the second sub-retaining wall 42, and the distance between two adjacent first sub-grooves 411 is greater than the distance between two adjacent second sub-grooves 421. This is because the edge area of the first retaining wall 41 is larger than the edge area of the second retaining wall 42, so that the liquid surface tension of the organic ink material in the edge area of the first retaining wall 40 is smaller than the liquid surface tension of the organic ink material in the edge area of the second retaining wall 40, and the flow rate of the organic ink material in the edge area of the first retaining wall 40 is smaller than the flow rate of the organic ink material in the edge area of the second retaining wall 40. Therefore, the arrangement density of the second sub-grooves 421 on the second sub-walls 42 is greater than the arrangement density of the first sub-grooves 411 on the first sub-walls 41, so that the flow rate of the organic ink material in the edge area where the first walls 40 are located and the flow rate of the organic ink material in the edge area where the second walls 40 are located become the same, the problem of uneven edge thickness of the organic layer 32 is solved, and the packaging effect of the display panel 100 is further effectively improved.
Compared with the first embodiment of the present application, in the second embodiment of the present application, the retaining wall 40 is disposed at the edge of the organic layer 32, and the retaining wall 40 is in an annular structure; wherein, the border region (frame position) of barricade 40 is provided with a plurality ofly recess 401 can utilize capillary effect to make organic layer 32 can be even spread, makes organic layer 32 is even at the regional rete thickness in border, recess 401 can be to forming organic layer 32's organic ink material plays the effect of drainage, can improve barricade 40's all around border position department organic ink material incomplete filling phenomenon improves organic ink material simultaneously and overflows barricade 40's phenomenon, thereby solves the uneven problem of the edge thickness of organic layer 32, and then has effectively promoted display panel 100's encapsulation effect.
Aiming at the technical problem that the current display panel 100 is difficult to realize low-cost detection of ambient light, the embodiment of the present application provides a display panel 100; the display panel 100 comprises a light-emitting functional layer 20, an encapsulation layer 30 and a retaining wall 40, wherein the encapsulation layer 30 is arranged on the light-emitting functional layer 20, the encapsulation layer 30 comprises a first inorganic layer 31 and an organic layer 32 arranged on the first inorganic layer 31, the retaining wall 40 is in an annular structure and is arranged around the edge of the organic layer 32, wherein a plurality of grooves 401 arranged at intervals are further arranged on one side, facing the organic layer 32, of the edge area (frame position) of the retaining wall 40, and the grooves 401 do not penetrate through the retaining wall 40; above-mentioned display panel 100 is through the edge of organic layer 32 is ring structure around the one deck barricade 40, just every corner position orientation of barricade 40 one side of organic layer 32 still is provided with the recess 401 that a plurality of intervals set up, recess 401 does not run through barricade 40, recess 401 can be to forming the organic ink material of organic layer 32 plays the effect of drainage, can improve the incomplete phenomenon of organic ink material filling of the marginal area department of barricade 40 improves organic ink material simultaneously and spills over the phenomenon of barricade 40, thereby solves the uneven problem of marginal thickness of organic layer 32, and then has effectively promoted display panel 100's encapsulation effect.
EXAMPLE III
As shown in fig. 4, a third plane structure diagram of the retaining wall 40 in the display panel 100 according to the embodiment of the present application is provided; the structure of the retaining wall 40 in the display panel 100 in the third embodiment of the present application is the same as or similar to the structure of the retaining wall 40 in the display panel 100 in the first embodiment of the present application, except that two adjacent retaining walls 40 facing the organic layer 32 are provided with a plurality of grooves 401 at intervals, and the positions of the retaining walls 40 corresponding to the corners are also provided with the grooves 401.
Specifically, two adjacent portions of the retaining wall 40 between the corners are provided with a plurality of spaced grooves 401 on a side facing the organic layer 32, and the grooves 401 are not provided at positions of the retaining wall 40 corresponding to the corners.
Further, the retaining wall 40 includes a first sub-retaining wall 41 or a second sub-retaining wall 42 disposed between two adjacent corners, and the length of the first sub-retaining wall 41 is greater than that of the second sub-retaining wall 42;
wherein, a plurality of first sub-grooves 411 are arranged on the first sub-retaining wall 41, a plurality of second sub-grooves 421 are arranged on the second sub-retaining wall 42, and the distance between two adjacent first sub-grooves 411 is greater than the distance between two adjacent second sub-grooves 421.
Further, the depth of the groove 401 corresponding to each corner position is greater than the depth of the first sub-groove 411 or the second sub-groove 421. This is because the area of the edge region of the retaining wall 40 is much larger than the area of the corner region of the retaining wall 40, which results in the liquid surface tension of the organic ink material of the retaining wall 40 at the edge region being smaller than the liquid surface tension of the organic ink material at the corner position of the retaining wall 40, so that the flow rate of the organic ink material of the retaining wall 40 at the edge region is smaller than the flow rate of the organic ink material of the retaining wall 40 at the corner region. Therefore, the depth of the groove 401 corresponding to each corner position is greater than the depth of the first sub-groove 411 or the second sub-groove 421, so that the flow rate of the organic ink material at each corner position is greater than the flow rate of the organic ink material at the edge area, and thus the flow rate of the organic ink material at the edge area of the retaining wall 40 is the same as the flow rate of the organic ink material at each corner position of the retaining wall 40, thereby solving the problem of uneven edge thickness of the organic layer 32 and further effectively improving the packaging effect of the display panel 100.
Aiming at the technical problem that the current display panel 100 is difficult to realize low-cost detection of ambient light, the embodiment of the present application provides a display panel 100; the display panel 100 comprises a light-emitting functional layer 20, an encapsulation layer 30 and a retaining wall 40, wherein the encapsulation layer 30 is arranged on the light-emitting functional layer 20, the encapsulation layer 30 comprises a first inorganic layer 31 and an organic layer 32 arranged on the first inorganic layer 31, the retaining wall 40 is in an annular structure and is arranged around the edge of the organic layer 32, a plurality of grooves 401 arranged at intervals are further arranged at the edge area and the corner position of the retaining wall 40 towards one side of the organic layer 32, and the grooves 401 do not penetrate through the retaining wall 40; above-mentioned display panel 100 is through the edge of organic layer 32 is the loop configuration around the one deck barricade 40, just every corner position and every frame position orientation of barricade 40 one side of organic layer 32 still is provided with the recess 401 that a plurality of intervals set up, recess 401 does not run through barricade 40, recess 401 can be to forming organic ink material of organic layer 32 plays the effect of drainage, can improve frame position and the incomplete phenomenon of corner position organic ink material filling of barricade 40 improve organic ink material simultaneously and spill over the phenomenon of barricade 40, thereby solve the uneven problem of edge thickness of organic layer 32, and then effectively promoted display panel 100's packaging effect.
The prior art of forming the dam 40 on the back plate for preventing the overflow of the ink for preparing the organic layer 32 has the following disadvantages:
1. organic material inks still run the risk of flooding, requiring improvements in the inkjet printing process in thin film packaging;
2. the organic material ink has uneven film thickness in the edge area and the middle area of the retaining wall 40;
3. the organic material ink may not be completely filled at the corner of the retaining wall 40;
4. the organic material ink easily overflows the dam 40.
The above embodiments of the present application address the above disadvantages of the prior art, and improve the uniformity problem of the organic layer 32 at the edge of the encapsulation area and the corner area in the thin film encapsulation technology by providing the groove 401 on the retaining wall 40. The capillary action of the grooves 401 of the retaining walls 40 has a drainage effect on the organic material ink, so that incomplete filling at corners can be improved, and the phenomenon of uneven thickness of edge regions can be improved. Meanwhile, the retaining wall 40 increases the boundary for the overflow of the organic material ink due to the addition of the groove 401, and also increases the process boundary for the inkjet printing of the organic layer 32 in the thin film encapsulation technology.
Correspondingly, the embodiment of the present application further provides a mobile terminal, the mobile terminal includes a terminal main body and the display panel 100 as described in any one of the above, and the terminal main body and the display panel 100 are combined into a whole. The mobile terminal may be a mobile phone, a computer, an intelligent wearable display device, and the like, which is not particularly limited in this embodiment.
The embodiment of the application provides a display panel 100 and a mobile terminal; the display panel 100 includes a light-emitting functional layer 20, an encapsulation layer 30 and a retaining wall 40, the encapsulation layer 30 includes a first inorganic layer 31 and an organic layer 32 disposed on the first inorganic layer 31, the retaining wall 40 is in an annular structure and disposed around an edge of the organic layer 32, wherein a plurality of grooves 401 disposed at intervals are further disposed on one side of the retaining wall 40 facing the organic layer 32, and the grooves 401 do not penetrate through the retaining wall 40; the display panel 100 is characterized in that the edge of the organic layer 32 surrounds the retaining wall 40 with an annular structure, the retaining wall 40 is further provided with a plurality of grooves 401 arranged at intervals towards one side of the organic layer 32, the grooves 401 do not penetrate through the retaining wall 40, the grooves 401 can drain the organic ink material forming the organic layer 32, incomplete filling of the organic ink material at the edge of the retaining wall 40 and at the corner position can be improved, meanwhile, the phenomenon that the organic ink material overflows the retaining wall 40 is improved, the problem that the edge thickness of the organic layer 32 is uneven is solved, and the packaging effect of the display panel 100 is effectively improved.
The display panel 100 and the mobile terminal provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display panel, comprising:
a light-emitting functional layer;
the packaging layer is arranged on the light-emitting functional layer and comprises a first inorganic layer and an organic layer arranged on the first inorganic layer; and
the retaining wall is of an annular structure and is arranged around the edge of the organic layer;
the retaining wall faces one side of the organic layer is further provided with a plurality of grooves arranged at intervals, and the grooves do not penetrate through the retaining wall.
2. The display panel of claim 1, wherein the retaining wall has a plurality of corners, and each corner of the retaining wall is provided with the groove at a side facing the organic layer.
3. The display panel according to claim 2, wherein a plurality of spaced grooves are formed on a side of the barrier wall facing the organic layer between two adjacent corners.
4. The display panel according to claim 3, wherein the retaining wall comprises a first sub-retaining wall or a second sub-retaining wall arranged between two adjacent corners, and the length of the first sub-retaining wall is greater than that of the second sub-retaining wall;
the first sub-retaining wall is provided with a plurality of first sub-grooves, the second sub-retaining wall is provided with a plurality of second sub-grooves, and the distance between every two adjacent first sub-grooves is larger than the distance between every two adjacent second sub-grooves.
5. The display panel according to claim 4, wherein the depth of the groove corresponding to each corner position is greater than the depth of the first sub-groove or the second sub-groove.
6. The display panel according to claim 1, wherein the depth of the groove increases from a side away from the organic layer to a side close to the organic layer.
7. The display panel according to claim 1, wherein the dam has a plurality of grooves along a height direction of the dam, and a distance between two adjacent grooves is equal.
8. The display panel according to claim 1, further comprising a second inorganic layer disposed on the organic layer;
wherein, in the top view direction of the display panel, the front projection of the retaining wall on the display panel is positioned in the second inorganic layer.
9. The display panel according to claim 1, wherein the material of the dam is an organic photoresist, and the size of the opening of the groove ranges from 1 μm to 20 μm.
10. A mobile terminal characterized by comprising a terminal body and the display panel according to any one of claims 1 to 9, the terminal body being integrated with the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194532.8A CN114613921A (en) | 2022-03-01 | 2022-03-01 | Display panel and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194532.8A CN114613921A (en) | 2022-03-01 | 2022-03-01 | Display panel and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114613921A true CN114613921A (en) | 2022-06-10 |
Family
ID=81860430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210194532.8A Pending CN114613921A (en) | 2022-03-01 | 2022-03-01 | Display panel and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114613921A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777266A (en) * | 2018-05-30 | 2018-11-09 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN109301084A (en) * | 2018-09-28 | 2019-02-01 | 京东方科技集团股份有限公司 | Encapsulating structure, electronic device and packaging method |
| US20200409411A1 (en) * | 2018-10-23 | 2020-12-31 | Wuhan China Optoelectronics Semiconductor Display Co., Ltd. | Narrow border organic light-emitting diode display panel |
-
2022
- 2022-03-01 CN CN202210194532.8A patent/CN114613921A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777266A (en) * | 2018-05-30 | 2018-11-09 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN109301084A (en) * | 2018-09-28 | 2019-02-01 | 京东方科技集团股份有限公司 | Encapsulating structure, electronic device and packaging method |
| US20200409411A1 (en) * | 2018-10-23 | 2020-12-31 | Wuhan China Optoelectronics Semiconductor Display Co., Ltd. | Narrow border organic light-emitting diode display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108962953B (en) | OLED display panel and OLED display | |
| CN110120463B (en) | Display substrate, preparation method thereof and display device | |
| US9373814B2 (en) | Organic light-emitting diode (OLED) display panel, pixel define layer (PDL) and preparation method thereof | |
| CN115734679A (en) | OLED display panel, preparation method thereof and OLED display device | |
| KR100710763B1 (en) | Organic el display | |
| WO2020191875A1 (en) | Display panel and display device | |
| CN108899349B (en) | Display panel, manufacturing method thereof and display device | |
| CN111192974B (en) | Array substrate and preparation method thereof | |
| CN110635067B (en) | Organic light-emitting display panel and display device | |
| KR101818776B1 (en) | Display panel device and manufacturing method of display panel device | |
| KR102059014B1 (en) | Light emitting display device and method of fabricating the same | |
| US20230157095A1 (en) | Display substrate and method for manufacturing the same, and display device | |
| CN111710694B (en) | Display substrate, manufacturing method thereof and display device | |
| CN109994657B (en) | OLED display panel manufacturing method and display panel manufactured by same | |
| CN111293152A (en) | Display substrate, preparation method thereof and electroluminescent display device | |
| CN111063822A (en) | OLED display panel | |
| KR101084166B1 (en) | Pixel structure and organic light emitting device comprising the same | |
| CN112018131B (en) | Flexible display panel and preparation method thereof | |
| CN111370459B (en) | Array substrate, manufacturing method thereof and display device | |
| CN209912873U (en) | Organic light emitting display panel | |
| CN114613921A (en) | Display panel and mobile terminal | |
| CN112289948B (en) | Organic light emitting diode display panel and manufacturing method thereof | |
| CN110970574B (en) | Display panel, preparation method thereof and display device | |
| CN109888125B (en) | Display panel and manufacturing method thereof | |
| CN112420795A (en) | OLED display panel and preparation method thereof |
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 |