CN111129346B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN111129346B
CN111129346B CN201911330983.4A CN201911330983A CN111129346B CN 111129346 B CN111129346 B CN 111129346B CN 201911330983 A CN201911330983 A CN 201911330983A CN 111129346 B CN111129346 B CN 111129346B
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China
Prior art keywords
layer
groove
display panel
display
thin film
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CN201911330983.4A
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Chinese (zh)
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CN111129346A (en
Inventor
王一佳
曹君
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN201911330983.4A priority Critical patent/CN111129346B/en
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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
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
    • 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
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements

Abstract

The invention provides a display panel and a display device, wherein the display panel comprises a display area and a non-display area, wherein the non-display area is provided with a functional area and a thin film transistor structure layer; the groove extends from the surface of the thin film transistor structure layer to the inside of the thin film transistor structure layer, and corresponds to the functional region; the liquid desiccant layer is arranged in the groove; and the packaging structure layer is filled in the groove and covers the whole thin film transistor structure layer. The invention provides a display panel and a display device.A liquid drying agent is filled in a groove, so that an external water vapor invasion path can be prolonged, the packaging effect of a cathode in the groove is enhanced, and the service life of the display panel is prolonged; and the material of the liquid desiccant adopts organic compounds, has flexibility and can be applied to flexible packaging.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display panel technologies, and in particular, to a display panel and a display device.
Background
Organic Light Emitting Diodes (OLEDs) have the advantages of self-luminescence, high contrast, wide viewing angle, low power consumption, flexibility, etc., and are popular with the public and researchers. The flexible OLED display screen gradually occupies the market due to its characteristics of flexibility, thinness and thinness, and the high screen ratio and even the full screen have become the key points of productivity. Besides display, the mobile phone panel also has a camera, a receiver, a microphone and other components occupying a certain proportion of the mobile phone screen. In order to continuously improve the screen ratio, the camera is arranged in the middle of an AA display area by adopting a laser cutting technology in the prior art, and in an OLED screen, after laser cutting is carried out on the AA area, water and oxygen can directly invade along the film layers such as a cathode and the like in a lateral direction, so that a light-emitting layer is deteriorated.
Therefore, there is a need to develop a new display panel to overcome the drawbacks of the prior art.
Disclosure of Invention
An object of the present invention is to provide a display panel, which can solve the problem in the prior art that after laser cutting is performed in an under-screen camera area, water and oxygen can directly enter laterally along film layers such as a cathode, and the like, so that a light emitting layer is deteriorated.
In order to achieve the above object, the present invention provides a display panel, including a display region and a non-display region, wherein the non-display region has a functional region, and a thin film transistor structure layer; the groove extends from the surface of the thin film transistor structure layer to the inside of the thin film transistor structure layer, and corresponds to the functional region; the liquid desiccant layer is arranged in the groove; and the packaging structure layer is filled in the groove and covers the whole thin film transistor structure layer.
Further, in other embodiments, the display device further includes an anode layer disposed on the thin film transistor structure layer and located in the display region; the pixel definition layer is arranged on the thin film transistor structure layer and is positioned in the display area, and the pixel definition layer is provided with an opening corresponding to the anode layer; an OLED device layer disposed on the anode in the opening; and the cathode layer extends from the display area to the non-display area and is arranged on the OLED device layer and the concave bottom of the groove, and the liquid desiccant layer is arranged on the cathode layer in the groove.
Further, in other embodiments, the thin film transistor structure layer includes a substrate layer; the insulating layer is arranged on the substrate layer; an active layer disposed in the insulating layer; the protective layer is arranged on the insulating layer; the source drain layer is arranged on the protective layer and is connected with the active layer, and the anode layer is connected with the source drain layer; the flat layer is arranged on the protective layer; wherein the grooves extend from a surface of the planar layer to a surface of the insulating layer.
Further, in other embodiments, the groove includes a first groove body disposed on the flat layer; and the second groove body is arranged on the protective layer and communicated with the first groove body, and the projection of the first groove body on the insulating layer completely falls into the projection of the second groove body on the insulating layer.
Further, in other embodiments, the second tank body is an inverted frustum structure or a circular truncated cone structure, and the first tank body is a rectangular parallelepiped structure.
Further, in other embodiments, the package structure layer includes a first inorganic layer extending from the display region to the non-display region and disposed on the cathode layer and on the liquid desiccant layer in the groove; a first organic layer disposed on the first inorganic layer; a second inorganic layer disposed on the first organic layer.
Further, in other embodiments, wherein the thickness of the liquid desiccant layer is greater than the thickness of the cathode layer.
Further, in other embodiments, the thickness of the desiccant layer is less than the depth of the grooves.
Further, in other embodiments, the organic light-emitting device further comprises a second organic layer disposed on the second inorganic layer; a third inorganic layer disposed on the second organic layer.
Further, in other embodiments, the display device further includes a retaining wall disposed in the non-display area, and the groove is located between the retaining wall and the display area; the retaining wall is arranged on the flat layer, and the cathode covers the retaining wall.
Further, in other embodiments, wherein the drying agent is prepared by ink-jet printing or coating.
Further, in other embodiments, the material of the liquid desiccant is an organic compound.
Further, in other embodiments, the material of the first inorganic layer, the second inorganic layer and the third inorganic layer is at least one of aluminum oxide, titanium oxide, silicon nitride, silicon oxide and silicon oxynitride, which has a water blocking function.
Further, in other embodiments, the material of the first organic layer and the second organic layer is at least one of propylene, hexamethyldisiloxane, polyacrylate, polycarbonate, and polystyrene, which can buffer the stress of the display panel when the display panel is bent or folded.
In order to achieve the above object, the present invention further provides a display device, including the display panel and the under-screen camera according to the present invention, wherein the under-screen camera is disposed below the display panel of the functional region.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a display panel and a display device.A liquid drying agent is filled in a groove, so that an external water vapor invasion path can be prolonged, the packaging effect of a cathode in the groove is enhanced, and the service life of the display panel is prolonged; and the material of the liquid desiccant adopts organic compounds, has flexibility and can be applied to flexible packaging.
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 embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a display panel provided in embodiment 2 of the present invention.
Reference numerals in the detailed description:
a display panel-100;
display area-101; non-display area-102;
a thin film transistor structure layer-110; a package structure layer-120;
a substrate-111; an insulating layer-112; an active layer-113;
a protective layer-114; a source drain layer-115; a planarization layer-116;
a first inorganic layer-121; a first organic layer-122; a second inorganic layer-123;
a second organic layer-124; a third inorganic layer-125;
an anode-131; pixel definition layer-132; OLED device layer-133;
a cathode layer-134;
a groove-140; a first tank-141; a second channel-142;
a liquid desiccant layer-150; wall-160.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel provided in the present embodiment, and the present embodiment provides a display panel 100 including a display area 101 and a non-display area 102, where the non-display area 102 has a function area.
The display panel 100 includes a thin film transistor structure layer 110 and an encapsulation structure layer 120. Wherein the thin film transistor structure layer 110 comprises a substrate 111 layer; an insulating layer 112 disposed on the substrate 111; an active layer 113 provided in the insulating layer 112; a protective layer 114 disposed on the insulating layer 112; a source/drain layer 115 disposed on the passivation layer 114 and connected to the active layer 113, wherein the anode 131 layer is connected to the source/drain layer 115; and a planarization layer 116 disposed on the protection layer 114.
The display panel 100 further includes an anode 131 layer disposed on the planarization layer 116 and located in the display region 101; a pixel defining layer 132 disposed on the planarization layer 116 and located in the display region 101, wherein the pixel defining layer 132 has an opening corresponding to the anode 131 layer; an OLED device layer 133 disposed on the anode 131 in the opening; and a cathode layer 134 extending from the display region 101 to the non-display region 102.
In the non-display region 102, the display panel 100 is provided with a groove 140, the groove 140 extends from the surface of the planarization layer 116 to the surface of the insulating layer 112, and the groove 140 corresponds to the functional region. The recess 140 is provided with a liquid desiccant layer 150, a cathode 134 and is provided on the OLED device layer 133 and at the bottom of the recess 140, the liquid desiccant layer 150 being provided on the cathode layer 134 in the recess 140. The groove 140 is filled with the liquid desiccant, so that an external vapor invasion path can be prolonged, the packaging effect of the cathode in the groove 140 is enhanced, and the service life of the display panel 100 is prolonged.
The package structure layer 120 fills the recess 140 and covers the entire thin film transistor structure layer 110. Wherein the package structure layer 120 includes a first inorganic layer 121 extending from the display region 101 to the non-display region 102 and disposed on the cathode layer 134 and on the liquid desiccant layer 150 in the groove 140; a first organic layer 122 disposed on the first inorganic layer 121; the first inorganic layer 123 is disposed on the first organic layer 122.
The groove 140 includes a first groove 141 disposed on the flat layer 116; the second slot 142 is disposed on the protective layer 114 and is communicated with the first slot 141, and a projection of the first slot 141 on the insulating layer 112 completely falls into a projection of the second slot 142 on the insulating layer 112.
The second tank 142 has an inverted frustum structure or a circular truncated cone structure, and the first tank 141 has a rectangular parallelepiped structure.
Wherein the thickness of the liquid desiccant layer 150 is greater than the thickness of the cathode layer 134 and the thickness of the liquid desiccant layer 150 is less than the depth of the grooves 140.
The liquid desiccant is prepared by ink-jet printing or coating, and the material of the liquid desiccant layer 150 is an organic compound.
The first inorganic layer 121 and the first inorganic layer 123 are made of at least one of aluminum oxide, titanium oxide, silicon nitride, silicon oxide, and silicon oxynitride, and have a water blocking function.
The material of the first organic layer 122 is at least one of propylene, hexamethyldisiloxane, polyacrylates, polycarbonate, and polystyrene, which can buffer the stress of the display panel 100 when it is bent or folded.
In order to achieve the above object, the present invention further provides a display device, which includes the display panel 100 according to the present invention and a lower-screen camera, wherein the lower-screen camera is disposed below the display panel 100 of the functional area.
In the display panel and the display device provided in the present embodiment, the groove 140 is filled with the liquid desiccant, which can prolong the invasion path of the external water vapor, enhance the encapsulation effect of the cathode in the groove 140, and prolong the service life of the display panel 100; and the material of the liquid desiccant adopts organic compounds, has flexibility and can be applied to flexible packaging.
Example 2
The structure of the flexible display panel in this embodiment is substantially the same as the corresponding structure in embodiment 1, and the same structure can refer to the corresponding description in embodiment 1, and is not repeated here. Referring to fig. 2, fig. 2 is a schematic structural diagram of the display panel 100 provided in the present embodiment, wherein the main difference between the two is that the encapsulating structure layer 120 further includes a second organic layer 124 disposed on the first inorganic layer 123; the third inorganic layer 125 is provided on the second organic layer 124, and can further improve the water and oxygen blocking capability of the display panel.
The display panel 100 further includes a dam 160 disposed in the non-display region 102, and the groove 140 is disposed between the dam 160 and the display region 101; the retaining wall 160 is disposed on the flat layer 116, and the cathode covers the retaining wall 160. The retaining wall is arranged to further provide the packaging effect of the display panel and prolong the external water vapor invasion path.
The invention has the beneficial effects that: the invention provides a display panel and a display device.A liquid drying agent is filled in a groove, so that an external water vapor invasion path can be prolonged, the packaging effect of a cathode in the groove is enhanced, and the service life of the display panel is prolonged; and the material of the liquid desiccant adopts organic compounds, has flexibility and can be applied to flexible packaging.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A display panel comprising a display region and a non-display region, the non-display region having a function region, an
A thin film transistor structure layer;
the groove extends from the surface of the thin film transistor structure layer to the inside of the thin film transistor structure layer, and corresponds to the functional region;
the liquid desiccant layer is arranged in the groove;
the packaging structure layer is filled in the groove and covers the whole thin film transistor structure layer;
the anode layer is arranged on the thin film transistor structure layer and is positioned in the display area;
the pixel definition layer is arranged on the thin film transistor structure layer and is positioned in the display area, and the pixel definition layer is provided with an opening corresponding to the anode layer;
an OLED device layer disposed on the anode in the opening;
a cathode layer extending from the display area to the non-display area and disposed on the OLED device layer and on the recessed bottom of the recess, the liquid desiccant layer being disposed on the cathode layer in the recess;
the thin film transistor structure layer includes:
a substrate layer;
the insulating layer is arranged on the substrate layer;
an active layer disposed in the insulating layer;
the protective layer is arranged on the insulating layer;
the source drain layer is arranged on the protective layer and is connected with the active layer, and the anode layer is connected with the source drain layer;
the flat layer is arranged on the protective layer; wherein the recess extends from a surface of the planar layer to a surface of the insulating layer;
the groove includes:
the first groove body is arranged on the flat layer;
the second groove body is arranged on the protective layer and communicated with the first groove body, and the projection of the first groove body on the insulating layer completely falls into the projection of the second groove body on the insulating layer;
the second groove body is of an inverted prismatic table structure or a circular truncated cone structure, and the first groove body is of a cuboid structure.
2. The display panel of claim 1, wherein the packaging structure layer comprises
A first inorganic layer extending from the display area to the non-display area and disposed on the cathode layer and on the liquid desiccant layer in the grooves;
a first organic layer disposed on the first inorganic layer;
a second inorganic layer disposed on the first organic layer.
3. The display panel of claim 1 wherein the liquid desiccant layer has a thickness greater than the thickness of the cathode layer.
4. The display panel of claim 1 wherein the thickness of the liquid desiccant layer is less than the depth of the grooves.
5. The display panel according to claim 1, further comprising
The retaining wall is arranged in the non-display area, and the groove is positioned between the retaining wall and the display area; the retaining wall is arranged on the flat layer, and the cathode covers the retaining wall.
6. A display device comprising the display panel according to any one of claims 1 to 5 and an off-screen camera provided below the display panel of the functional region.
CN201911330983.4A 2019-12-20 2019-12-20 Display panel and display device Active CN111129346B (en)

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CN111129346B true CN111129346B (en) 2022-04-26

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Publication number Priority date Publication date Assignee Title
CN111725424A (en) * 2020-06-11 2020-09-29 武汉华星光电半导体显示技术有限公司 Display panel
CN111755493B (en) * 2020-06-28 2022-08-23 武汉华星光电半导体显示技术有限公司 OLED display panel of camera under screen, preparation method thereof and display device
CN114203779B (en) * 2021-12-03 2023-06-02 深圳市华星光电半导体显示技术有限公司 OLED display panel and electronic equipment
CN114975551A (en) * 2022-05-25 2022-08-30 深圳市华星光电半导体显示技术有限公司 Display panel and manufacturing method thereof

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CN107863454A (en) * 2017-11-21 2018-03-30 武汉华星光电半导体显示技术有限公司 Flexible OLED display panel and its method for packing
CN108520895A (en) * 2018-03-08 2018-09-11 友达光电股份有限公司 Display panel
CN109713155A (en) * 2018-11-30 2019-05-03 云谷（固安）科技有限公司 Packaging film, display panel and preparation method thereof
CN110021642A (en) * 2019-03-22 2019-07-16 武汉华星光电半导体显示技术有限公司 Display panel and display device
CN110544714A (en) * 2019-09-27 2019-12-06 京东方科技集团股份有限公司 display panel, manufacturing method thereof and display device

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CN108520895A (en) * 2018-03-08 2018-09-11 友达光电股份有限公司 Display panel
CN109713155A (en) * 2018-11-30 2019-05-03 云谷（固安）科技有限公司 Packaging film, display panel and preparation method thereof
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CN110544714A (en) * 2019-09-27 2019-12-06 京东方科技集团股份有限公司 display panel, manufacturing method thereof and display device

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