CN111129101A - Organic light-emitting display panel, display device and electrostatic protection method - Google Patents
Organic light-emitting display panel, display device and electrostatic protection method Download PDFInfo
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- CN111129101A CN111129101A CN201911420783.8A CN201911420783A CN111129101A CN 111129101 A CN111129101 A CN 111129101A CN 201911420783 A CN201911420783 A CN 201911420783A CN 111129101 A CN111129101 A CN 111129101A
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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
- H10K59/121—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
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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
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1216—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
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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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- 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
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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Abstract
The invention provides an organic light-emitting display panel, a display device and an electrostatic protection method, wherein the organic light-emitting display panel comprises a display area and a non-display area surrounding the display area, and the organic light-emitting display panel comprises: a base substrate and a cover plate disposed opposite to each other; an encapsulation layer is arranged between the base substrate and the cover plate and positioned at the non-display area; and the flat capacitor structure is positioned between the base substrate and the cover plate and is arranged opposite to the packaging layer in the direction from the base substrate to the cover plate. The flat capacitor structure is arranged in the organic light-emitting display panel and opposite to the packaging layer, two pole plates of the flat capacitor structure are in a suspension state and have the capacity of attracting static electricity, and then the static electricity flowing to the packaging layer can be attracted through the flat capacitor, so that the phenomenon that the packaging layer is damaged by the static electricity is avoided, the packaging effect of the organic light-emitting display panel is high, and the problem of packaging failure of the organic light-emitting display panel is solved.
Description
Technical Field
The invention relates to the technical field of display, in particular to an organic light-emitting display panel, a display device and an electrostatic protection method.
Background
With the continuous development of display technologies, the requirements of consumers on display screens are continuously raised, and various displays are developed endlessly and rapidly, such as liquid crystal displays, organic light emitting displays and the like. On the basis, display technologies such as 3D display, touch display, curved surface display, ultrahigh resolution display and anti-peeping display are emerging continuously to meet the demands of consumers. In the organic light emitting display panel, substrates disposed opposite to each other are generally bonded and sealed by an encapsulation layer, and the sealing layer is generally a frit, and in the manufacturing process, the frit is irradiated with laser to be heated and melted, thereby bonding the upper and lower substrates together. However, the conventional organic light emitting display panel is prone to a problem of package failure.
Disclosure of Invention
In view of this, the present invention provides an organic light emitting display panel, a display device and an electrostatic protection method, which effectively solve the technical problems in the prior art and improve the packaging failure problem of the organic light emitting display panel.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
an organic light emitting display panel including a display area and a non-display area surrounding the display area, the organic light emitting display panel comprising:
a base substrate and a cover plate disposed opposite to each other;
an encapsulation layer is arranged between the base substrate and the cover plate and positioned at the non-display area;
and the flat capacitor structure is positioned between the base substrate and the cover plate and is arranged opposite to the packaging layer in the direction from the base substrate to the cover plate.
Correspondingly, the invention also provides a display device which comprises the organic light-emitting display panel.
Correspondingly, the invention also provides an electrostatic protection method which is applied to the organic light-emitting display panel, wherein the plate capacitor structure absorbs static electricity.
Compared with the prior art, the technical scheme provided by the invention at least has the following advantages:
according to the technical scheme provided by the invention, the organic light-emitting display panel is provided with the flat capacitor structure which is arranged opposite to the packaging layer, wherein two polar plates of the flat capacitor structure are in a suspension state and have the capacity of attracting static electricity, so that the static electricity flowing to the packaging layer can be attracted through the flat capacitor, the phenomenon that the packaging layer is damaged by static electricity is avoided, the high packaging effect of the organic light-emitting display panel is ensured, and the problem of packaging failure of the organic light-emitting display panel is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 6a is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 6b is a schematic structural diagram of a plate according to an embodiment of the present invention;
FIG. 6c is a schematic view of a hole according to an embodiment of the present invention;
FIG. 6d is a schematic view of another hole shape provided in the embodiment of the present invention;
fig. 6e is a schematic diagram illustrating an arrangement of metal nanowires according to an embodiment of the present invention;
FIG. 6f is a schematic diagram of another arrangement of metal nanowires provided in an embodiment of the present invention;
fig. 6g is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
fig. 11a is a schematic structural diagram of a plate capacitor structure according to an embodiment of the present invention;
fig. 11b is a schematic structural diagram of another plate capacitor structure according to an embodiment of the present invention;
fig. 11c is a schematic structural diagram of another plate capacitor structure according to an embodiment of the present invention;
fig. 12a is a schematic structural diagram of a plate capacitor structure at one side of a non-display area according to an embodiment of the present invention;
FIG. 12b is a schematic structural diagram of a plate capacitor structure at one side of a non-display area according to another embodiment of the present invention;
fig. 13a is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
FIG. 13b is a cross-sectional view taken along the direction BB' in FIG. 13 a;
fig. 14a is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention;
FIG. 14b is a cross-sectional view taken along direction BB' in FIG. 14 a;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
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.
As described in the background art, in an organic light emitting display panel, substrates disposed opposite to each other are generally bonded and sealed by an encapsulation layer, and a sealing layer is generally a frit, and in a manufacturing process, an upper substrate and a lower substrate are bonded together by heating and melting the frit through laser irradiation. However, the conventional organic light emitting display panel is prone to a problem of package failure. Specifically, the encapsulation layer is made of glass and is generally disposed at the edge of the display panel, so that the encapsulation layer is prone to attract static electricity to cause damage and fragmentation, and the organic light emitting display panel is prone to package failure.
Based on the above, the invention provides an organic light-emitting display panel, a display device and an electrostatic protection method, which effectively solve the technical problems in the prior art and improve the packaging failure problem of the organic light-emitting display panel.
In order to achieve the above object, the technical solutions provided by the present invention are described in detail below, specifically with reference to fig. 1 to 15.
Referring to fig. 1, a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention is shown, where the organic light emitting display panel includes a display area AA and a non-display area NA surrounding the display area, and the organic light emitting display panel includes:
a base substrate 100 and a cap substrate 200 disposed opposite to each other;
an encapsulation layer 300 is disposed between the base substrate 100 and the cover substrate 200 and at the non-display area NA;
and a plate capacitor structure 400 located between the base substrate 100 and the cover substrate 200 and disposed opposite to the package layer 300 in a direction from the base substrate 100 to the cover substrate.
The organic light-emitting display panel provided by the embodiment of the invention further comprises a buffer layer with a bottom, a light-emitting array, an encapsulation film and the like. A specific structure of an organic light emitting display panel according to an embodiment of the present invention is described below with reference to fig. 1, where the organic light emitting display panel according to an embodiment of the present invention includes a bottom buffer layer 111 on a base substrate 100, a light emitting array on a side of the bottom buffer layer 111 facing away from the base substrate 100, and an encapsulation film 125 on a side of the light emitting array facing away from the base substrate 100, where the light emitting array includes:
a semiconductor layer 112 on a side of the bottom buffer layer 111 facing away from the base substrate 100;
a first insulating layer 113 on a side of the semiconductor layer 112 facing away from the base substrate 100;
a gate metal layer 114 on a side of the first insulating layer 113 facing away from the base substrate 100;
a second insulating layer 115 on a side of the gate metal layer 114 facing away from the base substrate 100;
a capacitor metal layer 116 on a side of the second insulating layer 115 facing away from the base substrate 100;
a third insulating layer 117 on a side of the capacitor metal layer 116 facing away from the base substrate 100;
a source-drain metal layer 118 located on a side of the third insulating layer 117 facing away from the base substrate 100;
a passivation layer 119 located on a side of the source-drain metal layer 118 away from the base substrate 100;
a planarization layer 120 on a side of the passivation layer 119 facing away from the base substrate 100;
and a pixel defining layer 121 located on a side of the planarization layer away from the base substrate 100, wherein the pixel defining layer 121 includes a plurality of openings, and the openings define a light emitting device including an anode 122, a light emitting layer 123 and a cathode 124 stacked in sequence;
the encapsulation film 125 is used for covering and encapsulating the planarization layer 120, the pixel definition layer 121 and the light emitting device of the light emitting array; the encapsulation layer 300 is located at the edge of the organic light emitting display panel, i.e., outside the edge of the encapsulation film 125, and the encapsulation layer 300 may be disposed on the passivation layer 119 facing away from the base substrate 100.
Further, the organic light emitting display panel according to the embodiment of the invention further includes a top buffer layer 210 on a surface of the cover 200 facing the bottom substrate 100, and the top buffer layer 210 and the passivation layer 119 are encapsulated and bonded by the encapsulation layer 300.
It should be noted that the organic light emitting display panel structure shown in fig. 1 is only one of all organic light emitting display panel structures to which the present invention is applicable, and the present invention is not particularly limited.
It can be understood that, the organic light-emitting display panel has the flat capacitor structure that sets up relatively with the encapsulated layer, and wherein the bipolar plate of flat capacitor structure each other has the ability of attracting static for the suspended state, and then can attract the static that flows to encapsulated layer department through flat capacitor, and avoid appearing the phenomenon that the encapsulated layer was wounded in the static, guarantees that organic light-emitting display panel's packaging effect is high, and has improved the encapsulation inefficacy problem that organic light-emitting display panel easily appears.
In an embodiment of the present invention, the plate of the optional plate capacitor structure provided by the present invention may be a plate capacitor structure formed by a separately manufactured conductive film layer. Furthermore, in order to simplify the manufacturing process, at least one polar plate of the flat capacitor structure can be formed by manufacturing each conductive film layer in the light-emitting array; that is, the display area provided by the embodiment of the present invention includes a light emitting array, where the light emitting array includes a gate metal layer, a source/drain metal layer, and a capacitor metal layer; at least one of the two electrode plates of the flat capacitor structure is in the same layer with one of the grid metal layer, the source drain metal layer and the capacitor metal layer.
Specifically, referring to fig. 2, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is shown, wherein the flat capacitor structure according to an embodiment of the present invention includes a first electrode plate 410 and a second electrode plate 420 that are oppositely disposed, where the first electrode plate 410 and a capacitor metal layer 116 may be disposed between a second insulating layer 115 and a third insulating layer 117 at the same layer, and the second electrode plate 420 and a gate metal layer 114 may be disposed between a first insulating layer 113 and a second insulating layer 115 at the same layer;
that is, the first plate 410 is fabricated by multiplexing the conductive films of the capacitor metal layer 116, and the second plate 420 is fabricated by multiplexing the conductive films of the gate metal layer 114.
Alternatively, referring to fig. 3, a structural schematic diagram of another organic light emitting display panel according to an embodiment of the present invention is provided, where the flat capacitor structure according to the embodiment of the present invention includes a first electrode plate 410 and a second electrode plate 420 that are oppositely disposed, where the first electrode plate 410 may be disposed between the third insulating layer 117 and the passivation layer 119 in the same layer as the source-drain metal layer 118, and the second electrode plate 420 may be disposed between the first insulating layer 113 and the second insulating layer 115 in the same layer as the gate metal layer 114;
that is, the first plate 410 is fabricated by multiplexing the conductive films of the source-drain metal layer 118, and the second plate 420 is fabricated by multiplexing the conductive films of the gate metal layer 114.
Or, referring to fig. 4, a structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention is provided, where the flat capacitor structure provided in the embodiment of the present invention includes a first electrode plate 410 and a second electrode plate 420 that are oppositely disposed, where the first electrode plate 410 may be disposed between the third insulating layer 117 and the passivation layer 119 in the same layer as the source-drain metal layer 118, and the second electrode plate 420 may be disposed between the second insulating layer 115 and the third insulating layer 117 in the same layer as the capacitor metal layer 116;
that is, the first plate 410 is made by multiplexing the conductive film of the source-drain metal layer 118, and the second plate 420 is made by multiplexing the conductive film of the capacitor metal layer 116.
It should be noted that, in the embodiments of the present invention, the material and the thickness of the respective corresponding conductive films of the gate metal layer, the capacitor metal layer, and the source drain metal layer are not specifically limited, that is, the material and the thickness of the plate electrode of the flat capacitor are not specifically limited, and the plate electrode needs to be specifically designed according to the actual application.
In the organic light emitting display panel shown in fig. 2 to 4 provided in the embodiment of the present invention, both electrode plates of the plate capacitor structure are located between the package layer and the bottom substrate, and each of the electrode plates multiplexes one of the conductive films where the gate metal layer, the capacitor metal layer, and the source drain metal layer are located. In addition, the two electrode plates of the flat capacitor structure provided by the embodiment of the invention can also be positioned between the packaging layer and the cover plate (the structure shown in fig. 1); or, the two electrode plates of the flat capacitor structure provided by the embodiment of the present invention may further include one electrode plate located between the bottom substrate and the package layer, and the other electrode plate located between the package layer and the cover plate, and the electrode plate located between the bottom substrate and the package layer may further reuse one of the conductive films where the gate metal layer, the capacitor metal layer, and the source drain metal layer are located.
Specifically referring to fig. 5, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is shown, wherein the flat capacitor structure according to an embodiment of the present invention includes a first plate 410 and a second plate 420 that are oppositely disposed, where the first plate 410 may be located between the cover plate 200 and the encapsulation layer 300, and further may be located between the top buffer layer 210 and the encapsulation layer 300; and, the second plate 420 may be located between the package layer 300 and the bottom substrate 100, and further may multiplex one of the conductive films where the gate metal layer, the capacitor metal layer, and the source drain metal layer are located.
As can be understood with reference to fig. 2 to fig. 5, according to the technical solution provided by the embodiment of the present invention, along the direction from the bottom substrate to the cover plate, the flat capacitor structure may include a first plate and a second plate located on two sides of the encapsulation layer; or, the plate capacitor structure may further include a first plate and a second plate located on the same side of the encapsulation layer. Further, in order to ensure an irradiation effect of laser on the encapsulation layer, the electrode plate provided by the embodiment of the present invention and located between the encapsulation layer and the base substrate is a reflective electrode plate, and a reflective surface of the reflective electrode plate faces the encapsulation layer; the polar plate that is about to be located encapsulation layer towards subbase board one side sets up to the reflection polar plate, and then when laser shines into organic light emitting display panel from apron one side, can reflect laser to the encapsulation layer through the reflection polar plate, and then reach the better laser irradiation effect to the encapsulation layer.
When the polar plate of the flat capacitor provided by the embodiment of the invention can be positioned between the cover plate and the packaging layer, the polar plate positioned between the cover plate and the packaging layer can be provided with holes or made of special materials. That is, the flat capacitor structure provided in the embodiment of the present invention includes a first plate and a second plate that are disposed opposite to each other, and at least one of the first plate and the second plate is located between the encapsulation layer and the cover plate; the polar plate positioned between the packaging layer and the cover plate comprises a plurality of holes; or the polar plate positioned between the packaging layer and the cover plate comprises metal nanowires in preset arrangement.
Specifically, referring to fig. 6a, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is shown, wherein the flat capacitor structure according to the embodiment of the present invention includes a first plate 410 and a second plate 420 that are oppositely disposed, where the first plate 410 may be located between the cover plate 200 and the encapsulation layer 300; and, the second plate 420 may be positioned between the encapsulation layer 300 and the base substrate 100; further, the first plate 410 provided by the embodiment of the present invention includes a plurality of holes 411.
It can be understood that when the polar plate of the flat capacitor structure provided by the embodiment of the invention is arranged between the encapsulation layer and the cover plate, the hole of the polar plate is made to be transparent by hollowing the polar plate, and then when laser irradiates into the organic light-emitting display panel from one side of the cover plate, the laser can be transmitted to the encapsulation layer through the hole on the polar plate, so that a better laser irradiation effect on the encapsulation layer is achieved. Specifically, as shown in fig. 6b, which is a schematic structural diagram of a plate according to an embodiment of the present invention, wherein a first plate 410 is located between the cover plate and the package layer, and a second plate (not shown) is located between the package layer and the bottom substrate; the first plate 410 includes a plurality of holes 411, and the holes 411 may be circular.
Further, in the plate capacitor structure provided by the embodiment of the present invention, when the first electrode plate is located between the cover plate and the package layer, the second electrode plate is located between the package layer and the bottom substrate, and the first electrode plate and the second electrode plate have an overlapped position and a non-overlapped position, the density of holes at the overlapped position is smaller than the density of holes at the non-overlapped position, and/or the size of holes at the overlapped position is smaller than the size of holes at the non-overlapped position, so that while the light-transmitting area of the first electrode plate is ensured to be large, the solid overlapped area of the first electrode plate and the second electrode plate is ensured to be large, and the ability of the plate capacitor structure to attract static electricity is improved. As shown in fig. 6b, the density of the holes 411 on the first plate 410 provided by the present invention at the overlapping position between the first plate 410 and the second plate is less than the density at the non-overlapping position between the first plate 410 and the second plate, and the size of the holes 411 at the overlapping position between the first plate 410 and the second plate is less than the size of the holes 411 at the non-overlapping position between the first plate 410 and the second plate.
It should be noted that the shape of the holes on the plate is not limited in the present invention, and the holes may be regular or irregular (the shape of the holes 411 on the plate shown in fig. 6c is an irregular pattern), and further may be circular holes (the circular holes 411 shown in fig. 6 b), polygonal holes (the shape of the holes 411 on the plate shown in fig. 6d is rectangular), and the like. And the shape of the holes on the same polar plate can be the same or different, and the invention is not limited in particular.
In addition, when the polar plate located between the package layer and the cover plate provided in the embodiment of the present invention is the metal nanowires in the preset arrangement, the polar plate may be arranged along a single direction (for example, longitudinally arranged, transversely arranged, etc.) or staggered, and the present invention is not limited specifically. Specifically, as shown in fig. 6e, which is a schematic diagram of an arrangement of metal nanowires provided in the embodiment of the present invention, all the metal nanowires 401 may be arranged along a single direction. Alternatively, as shown in fig. 6f, for another schematic arrangement diagram of the metal nanowires provided in the embodiment of the invention, the metal nanowires 401 are staggered and may be arranged to form a grid structure.
Fig. 6g is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, wherein the organic light emitting display panel further includes a reflective layer 500 located between the encapsulation layer 600 and the base substrate 100.
When the laser irradiates into the organic light-emitting display panel from one side of the cover plate, the laser can be reflected to the packaging layer through the reflecting layer, and the better laser irradiation effect on the packaging layer is further achieved. Optionally, the reflective layer provided in the embodiment of the present invention may be a metal reflective layer, where the reflective layer may be one of the conductive films where the gate metal layer, the capacitor metal layer, and the source drain metal layer are located, and may also be a structural layer separately manufactured in the organic light emitting display panel manufacturing process, and the present invention is not limited in particular.
The reflecting layer provided by the embodiment of the invention can be arranged on one side of the flat capacitor structure, which faces the display area; when one of the first and second electrode plates of the flat capacitor structure provided in the embodiment of the present invention is located between the bottom substrate and the encapsulation layer, the reflective layer may be disposed on the same layer as the electrode plate, or the reflective layer may be disposed on a different layer from the electrode plate, for example, as shown in fig. 6g, the reflective layer 500 may be on a different layer from the second electrode plate 420 and located between the second electrode plate 420 and the bottom substrate 100; when the first electrode plate and the second electrode plate of the flat capacitor structure provided in the embodiment of the present invention are both located between the bottom substrate and the package layer, the reflective layer may be disposed in the same layer as any one of the first electrode plate and the second electrode plate, or the reflective layer may be disposed in the different layers from both the first electrode plate and the second electrode plate, which is not limited in the present invention.
In an embodiment of the present application, the flat capacitor structure provided in the embodiment of the present application is further in contact with the bottom substrate and/or the cover plate, and since the conduction areas of the bottom substrate and the cover plate are larger, the static electricity stored in the flat capacitor structure is further conducted to the bottom substrate and the cover plate, so that dissipation of the static electricity on the flat capacitor structure is facilitated. That is, the plate capacitor structure provided in the embodiment of the present invention includes a first plate and a second plate that are disposed opposite to each other, and at least one of the first plate and the second plate is in communication with the cover plate or the base substrate. In order to better explain the technical solution provided by the present invention, the following describes the technical solution provided by the embodiment of the present invention in more detail with reference to the accompanying drawings, and it should be noted that the following describes an example of a structure in which two plates of a plate capacitor structure are respectively located at two sides of an encapsulation layer, and the present invention is not limited in particular.
In an embodiment of the present invention, the plate capacitor structure provided by the present invention includes a first plate and a second plate, wherein at least one of the first plate and the second plate is in direct contact communication with the cover plate or the bottom substrate. Specifically, as shown in fig. 7, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is provided, wherein a first plate 410 is located between the encapsulation layer 300 and the cover 200, and a second plate 420 is located between the encapsulation layer 300 and the bottom substrate 100; a top buffer layer 210 is further disposed between the cover plate 200 and the package layer 300, a hollow area is disposed at a position of the top buffer layer 210 opposite to the first electrode plate 410, and the first electrode plate 410 is located at the hollow area and is in direct contact communication with the cover plate 200, so that the plate capacitor structure can dissipate attracted static electricity through rapid conduction of the cover plate.
Or, in an embodiment of the present invention, the flat capacitor structure provided by the present invention includes a first plate and a second plate, wherein at least one of the first plate and the second plate is in indirect contact communication with the cover plate or the base substrate. The indirect contact communication provided by the embodiment of the invention comprises contact communication connected through a via hole or contact communication connected through an edge extraction electrode. Specifically, as shown in fig. 8, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is provided, wherein a first plate 410 is located between the encapsulation layer 300 and the cover 200, and a second plate 420 is located between the encapsulation layer 300 and the bottom substrate 100; a top buffer layer 210 is further disposed between the cover plate 200 and the encapsulation layer 300, and the first plate 410 is in indirect contact communication with the cover plate 200 through the via hole 430; and/or the second plate 420 is in indirect contact communication with the base substrate 100 through the edge extraction electrode 440.
Optionally, the edge extraction electrode provided by the embodiment of the present invention and the polar plate communicated with the edge extraction electrode are located on the same layer; or, the edge extraction electrode is located on a surface of the electrode plate communicated with the edge extraction electrode, which is away from the other electrode plate, and the invention is not particularly limited. The edge leading-out electrode provided by the embodiment of the invention can be in a line structure or a surface structure, the application range of the edge leading-out electrode is expanded by arranging different shapes on the edge leading-out electrode, and the static electricity on the plate capacitor structure can be more rapidly conducted to a corresponding plate by arranging the edge leading-out electrode in the surface structure, so that the static electricity dissipation rate on the plate capacitor structure is improved, and the static electricity attraction capability of the plate capacitor structure is improved.
In an embodiment of the invention, when the polar plate of the flat capacitor structure is indirectly contacted and communicated with the cover plate or the base substrate through the via hole, a conductive film can be arranged between the via hole and the communicated plate, so that the electrostatic conduction effect is further improved. Fig. 9 is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, wherein a first plate 410 is located between an encapsulation layer 300 and a cover plate 200, and a second plate 420 is located between the encapsulation layer 300 and a base substrate 100; a top buffer layer 210 is further disposed between the cover plate 200 and the encapsulation layer 300, and the first plate 410 is in indirect contact communication with the cover plate 200 through the via hole 430; and, a conductive film 450 is further disposed between the via hole 430 and the cover plate 200, and the conductive film 450 further improves the electrostatic conduction effect between the plate capacitor structure and the cover plate 200.
Further, when only one of the first polar plate and the second polar plate is communicated with the cover plate or the base substrate, the vertical projection of the polar plate which is not communicated with the cover plate and the base substrate on the base substrate is within the vertical projection range of the polar plate which is communicated with the cover plate or the base substrate on the base substrate. Specifically, as shown in fig. 10, a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention is provided, wherein a polar plate 410 provided in the embodiment of the present invention is located between an encapsulation layer 300 and a cover plate 200, and a second polar plate 420 is located between the encapsulation layer 300 and a base substrate 100; a top buffer layer 210 is further disposed between the cover plate 200 and the encapsulation layer 300, a hollow area is disposed at a position of the top buffer layer 210 opposite to the first electrode plate 410, and the first electrode plate 410 is located at the hollow area and is in direct contact communication with the cover plate 200.
And a perpendicular projection S2 of the second plate 420, which is not in communication with the cover plate 200 and the base substrate 100, on the base substrate 100 is within a range of a perpendicular projection S1 of the first plate 410, which is in communication with the cover plate 200, on the base substrate 100.
It can be understood that, in the plate capacitor structure provided by the embodiment of the present invention, when one of the electrode plates is communicated with the cover plate or the bottom substrate and the other electrode plate is not communicated with the cover plate or the bottom substrate, the area of the electrode plate communicated with the cover plate or the bottom substrate is made large, and the area of the electrode plate not communicated with the cover plate or the bottom substrate is made small, so that the static electricity on the electrode plate can be rapidly led out through the cover plate or the bottom substrate on the basis of the electrode plate with a large area and having a strong electrostatic attraction capability, so as to improve the effect of dissipating the static electricity on the plate capacitor structure.
In an embodiment of the present invention, in the flat capacitor structure provided by the present invention, one of the two plates may be a ring-shaped plate surrounding the display region, and the other plate includes a plurality of block-shaped sub-plates; or the two polar plates comprise a plurality of block-shaped sub-polar plates, and the block-shaped sub-polar plates of the two polar plates are opposite one by one; or both the two electrode plates are oppositely arranged annular structure electrode plates surrounding the display area, and the invention is not limited in particular. That is, the flat capacitor structure provided by the embodiment of the present invention includes a first plate and a second plate that are oppositely disposed, where the first plate includes at least one first sub-plate;
and the second plate comprises at least one second sub-plate, and the first sub-plate and the at least one second sub-plate are opposite to form a capacitor.
As shown in fig. 11a, a schematic structural diagram of a flat capacitor structure according to an embodiment of the present invention is provided, the flat capacitor structure includes two plates, a first plate 410 is a ring-shaped plate surrounding a display area AA, and a second plate 420 includes a plurality of block-shaped sub-plates, wherein the ring-shaped plate and the plurality of block-shaped sub-plates are overlapped to form the flat capacitor structure. Alternatively, the first and second electrodes may be,
as shown in fig. 11b, a schematic structural diagram of another flat capacitor structure according to an embodiment of the present invention is provided, the flat capacitor structure includes two plates, wherein the first plate 410 is a ring-shaped plate surrounding the display area AA, and the second plate 420 is also a ring-shaped plate surrounding the display area AA, wherein the two ring-shaped plates are overlapped to form the flat capacitor structure, and the size of the first plate and the second plate is not particularly limited. Alternatively, the first and second electrodes may be,
as shown in fig. 11c, which is a schematic structural diagram of another flat capacitor structure provided in the embodiment of the present invention, the flat capacitor structure includes two plates, wherein the first plate 410 includes a plurality of block-shaped sub-plates, the second plate 420 includes a plurality of block-shaped sub-plates, and the block-shaped sub-plates of the first plate 410 and the block-shaped sub-plates of the second plate 420 are opposite to each other to form a capacitor.
In an embodiment of the invention, at least one edge of the non-display area, and in a direction from the middle to two sides of the edge, the relative overlapping area of the first electrode plate and the second electrode plate gradually decreases.
It can be understood that the area of the reduced area of each side of the non-display area, which can conduct static electricity, is larger and the capacity of bearing static electricity is relatively larger than that of the corners of the non-display area. Therefore, at least one side of the non-display area provided by the embodiment of the invention, the entity overlapping area of the first polar plate and the second polar plate opposite to each other is gradually reduced from the middle to the two sides, so that the electrostatic attraction capability at the middle area can be improved, the edge static electricity with relatively small area of the non-display area is attracted to the middle area with relatively large area of the non-display area, and the antistatic capability of the organic light-emitting display panel is improved.
Optionally, when one plate of the plate capacitor structure includes a block-shaped sub-plate, at least one side of the non-display area, and in a direction from the middle to two sides of the side, the density of the block-shaped sub-plate may be changed to gradually decrease the solid overlapping area of the two plates. As shown in fig. 12a, a schematic structural diagram of a flat capacitor structure at one side of a non-display area according to an embodiment of the present invention is provided, wherein a first plate 410 of the flat capacitor structure includes a plurality of block-shaped sub-plates, and a second plate is a strip-shaped plate at the side, wherein the density of the block-shaped sub-plates of the first plate 410 in the direction from the middle to both sides of the side is adjusted to achieve the purpose that the physical overlapping area of the first plate 410 and the second plate 420 is gradually reduced.
Similarly, when the first plate and the second plate of the flat capacitor structure comprise a plurality of block-shaped sub-plates at least one side of the non-display area, the density of the capacitor is formed by adjusting the block-shaped sub-plates opposite to the first plate and the second plate, so that the purpose that the solid overlapping area of the first plate and the second plate is gradually reduced in the direction from the middle to two sides of the side of the non-display area is achieved.
In addition, when the first polar plate and the second polar plate of the flat capacitor structure are strip-shaped polar plates with the whole surfaces at least one side of the non-display area, the purpose that the opposite entity overlapping areas of the two polar plates are gradually reduced from the middle to the two sides of the side of the non-display area can be realized by changing the shapes of the strip-shaped polar plates. As shown in fig. 12b, a schematic structural diagram of another flat capacitor structure at one side of a non-display area according to an embodiment of the present invention is shown, wherein a first plate 410 of the flat capacitor structure includes a strip-shaped plate, and a second plate 420 also includes a strip-shaped plate, wherein the strip-shaped plate of the second plate 420 is adjusted to be a rectangular strip-shaped plate; and in the direction from the middle to both sides of the non-display area, the strip-shaped polar plate of the first polar plate 410 is adjusted to be in a shape that the middle position is wide and the sides at both sides are narrow, so that the purpose that the opposite entity overlapping area of the first polar plate 410 and the second polar plate 420 is gradually reduced in the direction from the middle to both sides of the side of the non-display area is realized, and the invention is not particularly limited.
In an embodiment of the present invention, in order to further improve a problem that the package layer is broken to cause package failure of the organic light emitting display panel, a partition layer penetrating through the package layer is further disposed in the package layer. And when the organic light emitting display panel provided by the embodiment of the invention comprises the reflection layer, the reflection layer can be positioned on one side of the partition layer facing the display area.
It can be understood that the technical solution provided by the embodiment of the present invention can improve the problem that the packaging layer is damaged by electrostatic shock by attracting the electrostatic through the plate capacitor structure; and, through setting up the partition layer that sees through the encapsulated layer, and when making the encapsulated layer cracked condition appear, block the crackle through the partition layer and further enlarge, and then protect the encapsulated layer through flat capacitor structure and partition layer dual structure, further improve the problem that encapsulation became invalid easily appears in organic light emitting display panel. Optionally, the plate capacitor structure provided in the embodiment of the present invention is located on a side of the partition layer away from the display area.
The partition layer provided by the embodiment of the invention can be a split structure for splitting the packaging layer into two parts. Specifically, referring to fig. 13a and 13b, fig. 13a is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, and fig. 13b is a sectional view of fig. 13a taken along direction BB', wherein the blocking layer 600 provided in the embodiment of the present invention blocks the encapsulation layer into the first sub-encapsulation layer 310 and the second sub-encapsulation layer 320, and the blocking layer 600 is disposed around the first sub-encapsulation layer 310. The organic light emitting display panel provided in the embodiment of the invention further includes a reflective layer 500, and the reflective layer 500 may be disposed on a side of the partition layer 600 facing the first sub-encapsulation layer 310. Moreover, the reflective layer 500 provided in the embodiment of the present invention may be disposed on a layer different from that of the second electrode plate 420, and the reflective layer 500 may also be disposed between the second electrode plate 420 and the encapsulation layer 300.
Or, the partition layer provided in the embodiment of the present invention may have a structure including a plurality of sub partition holes, and the shapes of the sub partition holes are not particularly limited, and may be circular holes or strip-shaped holes. Specifically, referring to fig. 14a and 14b, fig. 14a is a schematic structural diagram of another organic light emitting display panel according to an embodiment of the present invention, and fig. 14b is a sectional view of fig. 14a along the BB' direction, wherein the partition layer includes a plurality of sub-layers 610, and the sub-layers 610 are arranged at intervals. The organic light emitting display panel provided in the embodiment of the invention further includes a reflective layer 500, and the reflective layer 500 may be disposed on a side of the partition layer 600 facing the first sub-encapsulation layer 310. Moreover, the reflective layer 500 provided in the embodiment of the present invention may be disposed on the same layer as the second electrode plate 420, and the present invention is not limited in particular, and the reflective layer may also be located between the second electrode plate and the encapsulation layer or between the second electrode plate and the base substrate.
It should be noted that, when the partition layer provided in the embodiment of the present invention includes a plurality of sub-layers, among the plurality of sub-layers at least one side of the non-display area, the plurality of sub-layers may be arranged in at least one row along the extending direction of the side, and the extending direction of each row of sub-layers is parallel to the extending direction of the side of the non-display area.
Correspondingly, the invention further provides a display device, and the display device comprises the organic light-emitting display panel provided by any one of the embodiments.
Referring to fig. 15, a schematic structural diagram of a display device according to an embodiment of the present invention is shown, where the display device 10 may be a mobile terminal, and the mobile terminal includes the organic light emitting display panel according to any of the embodiments.
In other embodiments of the present invention, the display device provided by the present invention may also be a display device such as a tablet computer, a notebook computer, a computer display, etc., and the present invention is not limited in particular.
Correspondingly, the invention further provides an electrostatic protection method applied to the organic light emitting display panel provided by any one of the above embodiments, wherein static electricity is absorbed by the plate capacitor structure.
The invention provides an organic light-emitting display panel, a display device and an electrostatic protection method, wherein the organic light-emitting display panel comprises a display area and a non-display area surrounding the display area, and the organic light-emitting display panel comprises: a base substrate and a cover plate disposed opposite to each other; an encapsulation layer is arranged between the base substrate and the cover plate and positioned at the non-display area; and the flat capacitor structure is positioned between the base substrate and the cover plate and is arranged opposite to the packaging layer in the direction from the base substrate to the cover plate.
According to the technical scheme provided by the invention, the organic light-emitting display panel is provided with the flat capacitor structure which is arranged opposite to the packaging layer, wherein two polar plates of the flat capacitor structure are in a suspension state and have the capacity of attracting static electricity, so that the static electricity flowing to the packaging layer can be attracted through the flat capacitor, the phenomenon that the packaging layer is damaged by the static electricity is avoided, the high packaging effect of the organic light-emitting display panel is ensured, and the problem of packaging failure of the organic light-emitting display panel is solved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (20)
1. An organic light emitting display panel comprising a display region and a non-display region surrounding the display region, the organic light emitting display panel comprising:
a base substrate and a cover plate disposed opposite to each other;
an encapsulation layer is arranged between the base substrate and the cover plate and positioned at the non-display area;
and the flat capacitor structure is positioned between the base substrate and the cover plate and is arranged opposite to the packaging layer in the direction from the base substrate to the cover plate.
2. The OLED panel of claim 1, wherein the plate capacitor structure comprises a first plate and a second plate disposed opposite to each other, and at least one of the first plate and the second plate is in communication with the cover substrate or the base substrate.
3. The organic light-emitting display panel according to claim 2, wherein at least one of the first electrode plate and the second electrode plate is in direct contact communication or indirect contact communication with the cover substrate or the base substrate.
4. The organic light-emitting display panel of claim 3, wherein the indirect contact communication comprises a via-connected contact communication or an edge extraction electrode-connected contact communication.
5. The organic light-emitting display panel according to claim 4, wherein the edge extraction electrode is located on the same layer as a plate with which the edge extraction electrode is communicated;
or the edge extraction electrode is positioned on the surface of one side, away from the other polar plate, of the polar plate communicated with the edge extraction electrode.
6. The organic light-emitting display panel according to claim 5, wherein the edge extraction electrode is a line structure or a plane structure.
7. The organic light-emitting display panel according to claim 2, wherein when only one of the first electrode plate and the second electrode plate is in communication with the cover substrate or the base substrate, a vertical projection of an electrode plate not in communication with the cover substrate or the base substrate on the base substrate is within a vertical projection range of an electrode plate in communication with the cover substrate or the base substrate on the base substrate.
8. The OLED panel of claim 1, wherein the plate capacitor structure comprises a first plate and a second plate disposed opposite to each other, the first plate comprising at least one first sub-plate;
and the second plate comprises at least one second sub-plate, and the first sub-plate and the at least one second sub-plate are opposite to form a capacitor.
9. The organic light emitting display panel of claim 8, wherein the first and second electrode plates have a relatively overlapping area that gradually decreases at least one side of the non-display region in a direction from the middle to both sides of the side.
10. The OLED panel of claim 1, wherein the plate capacitor structure comprises a first plate and a second plate on both sides of the encapsulation layer along the direction from the bottom substrate to the cover plate;
or the flat capacitor structure comprises a first polar plate and a second polar plate which are positioned on the same side of the packaging layer.
11. The organic light-emitting display panel according to claim 10, wherein the plate between the encapsulation layer and the base substrate is a reflective plate, and a reflective surface of the reflective plate faces the encapsulation layer.
12. The OLED panel of claim 1, wherein the plate capacitor structure comprises a first plate and a second plate disposed opposite to each other, and at least one of the first plate and the second plate is located between the encapsulation layer and the cover plate;
the polar plate positioned between the packaging layer and the cover plate comprises a plurality of holes; or the polar plate positioned between the packaging layer and the cover plate comprises metal nanowires in preset arrangement.
13. The organic light-emitting display panel according to claim 1, wherein the display region includes a light-emitting array including a gate metal layer, a source drain metal layer, and a capacitor metal layer; at least one of the two electrode plates of the flat capacitor structure is in the same layer with one of the grid metal layer, the source drain metal layer and the capacitor metal layer.
14. The organic light-emitting display panel according to claim 1, wherein a barrier layer penetrating the encapsulation layer is further provided in the encapsulation layer.
15. The organic light-emitting display panel according to claim 14, wherein the plate capacitor structure is located on a side of the partition layer away from the display region.
16. The organic light-emitting display panel according to claim 14, wherein the partition layer partitions the encapsulation layer into a first sub-encapsulation layer and a second sub-encapsulation layer, and the partition layer is disposed around the first sub-encapsulation layer.
17. The organic light-emitting display panel of claim 14, wherein the partition layer comprises a plurality of sub-layers, and wherein adjacent sub-layers are spaced apart.
18. The organic light-emitting display panel according to claim 1, further comprising a reflective layer between the base substrate and the encapsulation layer.
19. A display device comprising the organic light-emitting display panel according to any one of claims 1 to 18.
20. An electrostatic discharge protection method applied to the organic light emitting display panel according to any one of claims 1 to 18, wherein static electricity is absorbed by the plate capacitor structure.
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| WO2022172428A1 (en) * | 2021-02-15 | 2022-08-18 | シャープ株式会社 | Display device |
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