CN109686775B

CN109686775B - Organic light-emitting display panel, preparation method and display device

Info

Publication number: CN109686775B
Application number: CN201910023662.3A
Authority: CN
Inventors: 周志伟
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2021-08-03
Anticipated expiration: 2039-01-10
Also published as: CN109686775A

Abstract

The invention discloses an organic light-emitting display panel, a preparation method and a display device, wherein the organic light-emitting display panel comprises: a first substrate; an organic light emitting structure array layer on the first substrate, the organic light emitting structure array layer including a cathode; the cathode comprises at least a first conductive line and a second conductive line, wherein the orthographic projection of the first conductive line on the first substrate surrounds the orthographic projection of the cathode on the first substrate, and the orthographic projection of the second conductive line on the first substrate surrounds the orthographic projection of the first conductive line on the first substrate; the first conducting wire is a primary battery anode, and the second conducting wire is a primary battery cathode; according to the principle of the primary battery, in the primary battery formed by the first conductive wire and the second conductive wire, the cathode of the primary battery can be used as a sacrificial wire to preferentially consume water and oxygen, so that the water and oxygen permeated by the display panel are prevented from corroding the organic light-emitting structure, and the light-emitting efficiency and the service life of the organic light-emitting display panel are ensured.

Description

Organic light-emitting display panel, preparation method and display device

Technical Field

The embodiment of the invention relates to a display technology, in particular to an organic light-emitting display panel, a preparation method and a display device.

Background

An Organic Light Emitting diode Display (OLED) has many advantages of self-luminescence, low driving voltage, high luminous efficiency, short response time, high definition and contrast, wide viewing angle, wide temperature range, flexible Display, large-area full color Display, and the like, and is considered as a Display device with the most potential development in the industry.

At present, when an organic light-emitting display panel is manufactured, a thin film encapsulation technology is generally adopted to realize the blocking of water and oxygen, but water and oxygen still possibly permeate into gaps between an encapsulation layer and a light-emitting layer and between the encapsulation layer and an array substrate to corrode a light-emitting material and a cathode material, so that the efficiency and the service life of an OLED device are reduced.

Disclosure of Invention

The invention provides an organic light-emitting display panel, a preparation method and a display device, which are used for realizing the consumption of water and oxygen permeated in an organic light-emitting panel and protecting an organic light-emitting structure.

In a first aspect, an embodiment of the present invention provides an organic light emitting display panel, including:

a first substrate;

an organic light emitting structure array layer on the first substrate, the organic light emitting structure array layer including a cathode;

the positive projection of the first conductive wire on the first substrate surrounds the positive projection of the cathode on the first substrate, and the positive projection of the second conductive wire on the first substrate surrounds the positive projection of the first conductive wire on the first substrate;

the first conducting wire is a primary battery anode, and the second conducting wire is a primary battery cathode; or the second conducting wire is the anode of the primary battery, and the first conducting wire is the cathode of the primary battery.

Optionally, the first conductive line and the second conductive line are the same material;

the first conductive wire is connected with a first potential line, and the second conductive wire is connected with a second potential line; the potential on the first potential line is higher than the potential on the second potential line, or the potential on the second potential line is higher than the potential on the first potential line.

Optionally, the organic light emitting display panel further includes a pixel driving circuit array layer, where the pixel driving circuit array layer is located between the first substrate and the organic light emitting structure array layer;

the first conductive wire and the second conductive wire are arranged in the same layer and are arranged in the same layer with any one of a gate layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer;

or the first conductive wire and the second conductive wire are arranged in different layers and are respectively arranged in the same layer with any two layers of the same material in the grid layer, the source drain layer or the capacitance electrode layer in the pixel driving circuit array layer.

Optionally, the organic light emitting structure array layer includes a common cathode layer, and the first conductive line and the second conductive line are disposed at the same layer and are disposed at the same layer as the common cathode layer, respectively.

Optionally, the materials of the first conductive line and the second conductive line are different, the metal activity of the first conductive line is less than that of the second conductive line, or the metal activity of the second conductive line is less than that of the first conductive line;

the first and second conductive lines are both electrically floating; or the first conductive wire is connected with a first potential signal wire, and the second conductive wire is connected with a second potential signal wire; the first potential signal is higher than the second potential signal, or the second potential signal is higher than the first potential signal.

the first conductive line and the second conductive line are arranged in different layers and are respectively arranged with any two layers of different materials in a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer.

Optionally, each insulating layer on a side, away from the first substrate, of a film layer in the pixel driving circuit array layer, which is disposed on the same layer as the first conductive line, is not overlapped with the first conductive line;

and each insulating layer on one side of the film layer, which is arranged on the same layer as the second conducting wire, of the pixel driving circuit array layer and is away from the first substrate is not overlapped with the second conducting wire.

Optionally, the material of each of the first and second conductive lines comprises at least one of aluminum, titanium, and molybdenum.

Optionally, the organic light emitting device further comprises a thin film encapsulation layer, wherein the thin film encapsulation layer covers the organic light emitting structure array layer;

the first conductive line and the second conductive line are positioned between the thin film encapsulation layer and the first substrate; or the first conductive wire and the second conductive wire are positioned between any two adjacent film layers in the thin film packaging layer.

In a second aspect, an embodiment of the present invention further provides a method for manufacturing an organic light emitting display panel, including:

providing a first substrate;

forming an organic light emitting structure array layer on the first substrate, the organic light emitting structure array layer including a cathode;

forming at least a first conductive line and a second conductive line, wherein an orthographic projection of the first conductive line on the first substrate surrounds an orthographic projection of the cathode on the first substrate, an orthographic projection of the second conductive line on the first substrate surrounds an orthographic projection of the first conductive line on the first substrate, the first conductive line is a primary battery positive electrode, and the second conductive line is a primary battery negative electrode; or the second conducting wire is the anode of the primary battery, and the first conducting wire is the cathode of the primary battery.

Optionally, before forming an organic light emitting structure array layer on the first substrate, the organic light emitting structure array layer including a cathode, further includes:

forming a pixel driving circuit array layer;

the first conductive line and the second conductive line are arranged in the same layer, arranged in the same layer with any one of a gate layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer and formed in the same process; or the first conductive wire and the second conductive wire are arranged in different layers and are respectively arranged in the same layer with any two layers of the same material in the grid layer, the source drain layer or the capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process.

forming a pixel driving circuit array layer;

the first conductive line and the second conductive line are arranged in different layers and are respectively arranged in the same layer with any two layers of different materials in a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process.

Optionally, the pixel driving circuit array layer further includes an insulating layer located between the gate layer and the capacitor electrode layer, between the capacitor electrode layer and the source drain electrode layer, and on the source drain electrode layer; the method for preparing the organic light emitting display panel further comprises the following steps:

removing the insulating layer in the pixel driving circuit array layer covering the first and second conductive lines.

In a third aspect, an embodiment of the present invention further provides an organic light emitting display device, including the organic light emitting display panel according to any one of the first aspect.

The invention provides a display panel, which is characterized in that a first conductive wire and a second conductive wire are arranged in the organic light-emitting display panel, the orthographic projection of the first conductive wire on a first substrate surrounds the orthographic projection of a cathode on the first substrate, and the orthographic projection of the second conductive wire on the first substrate surrounds the orthographic projection of the first conductive wire on the first substrate; by utilizing the principle of a primary battery, a first conducting wire is the positive electrode of the primary battery, and a second conducting wire is the negative electrode of the primary battery; or the second conductive wire is a primary battery anode, and the first conductive wire is a primary battery cathode, wherein the primary battery cathode can be used as a sacrificial wire to be preferentially corroded to consume water and oxygen, so that the problem that the efficiency and the service life of a device of an organic light-emitting structure are reduced due to the fact that a light-emitting function layer and a cathode in an organic light-emitting display panel are easily corroded by permeated water and oxygen is solved.

Drawings

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 cross-sectional view of the organic light emitting display panel shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the organic light emitting display panel shown in FIG. 2;

FIG. 5 is a schematic cross-sectional view illustrating another organic light emitting display panel according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view illustrating 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 top view of another organic light emitting display panel according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of the organic light emitting display panel shown in fig. 8 along BB';

fig. 10 is a flowchart of a method for manufacturing an organic light emitting display panel according to an embodiment of the present invention;

fig. 11 is a flowchart of another method of fabricating an organic light emitting display panel according to an embodiment of the present invention;

fig. 12 is a flowchart of a method for manufacturing an organic light emitting display panel according to an embodiment of the present invention;

fig. 13 is a flowchart of a method of fabricating still another organic light emitting display panel according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an organic light emitting display device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In an OLED device, light-emitting materials in an organic light-emitting structure array are usually polymers or organic small molecules, cathode materials are usually active metals with low work functions, such as magnesium aluminum, and the like, and these light-emitting materials and cathode materials are very sensitive to water vapor and oxygen, and the service life of the OLED device can be greatly shortened by water/oxygen permeation. The embodiment of the invention provides various organic light-emitting display panels aiming at the problem of water-oxygen corrosion of an OLED device.

Fig. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention, and referring to fig. 1, the organic light emitting display panel includes: a first substrate 11; an organic light emitting structure array layer 12 on the first substrate 11, the organic light emitting structure array layer 12 including a cathode 120; further comprises at least a first conductive line 131 and a second conductive line 132, an orthographic projection of the first conductive line 131 on the first substrate 11 surrounds an orthographic projection of the cathode 120 on the first substrate 11, and an orthographic projection of the second conductive line 132 on the first substrate 11 surrounds an orthographic projection of the first conductive line 131 on the first substrate 11; the first conductive wire 131 is a primary battery positive electrode, and the second conductive wire 132 is a primary battery negative electrode; alternatively, the second conductive wire 132 is a positive battery electrode and the first conductive wire 131 is a negative battery electrode.

In the organic light emitting display panel, the permeated water and oxygen can be used as electrolytes of the first conductive line 131 and the second conductive line 132, and the first conductive line 131 and the second conductive line 132 form a loop, so that the first conductive line 131 and the second conductive line 132 spontaneously form a primary battery, and a more easily corroded conductive line of the first conductive line 131 and the second conductive line 132 forms a cathode of the primary battery, is preferentially corroded, and consumes water and oxygen in a corrosion process. The first and second

conductive lines

131 and 132 are located at the periphery of the cathode 120, and may prevent water and oxygen from intruding from the edge of the organic light emitting display panel to corrode the cathode 120 and the organic light emitting material in the organic light emitting structure array layer 12.

According to the organic light-emitting display panel provided by the embodiment of the invention, the first conductive wire and the second conductive wire are arranged, the orthographic projection of the first conductive wire on the first substrate is arranged to surround the orthographic projection of the cathode on the first substrate, and the orthographic projection of the second conductive wire on the first substrate surrounds the orthographic projection of the first conductive wire on the first substrate; by utilizing the principle of a primary battery, a first conducting wire is the positive electrode of the primary battery, and a second conducting wire is the negative electrode of the primary battery; or the second conductive wire is a primary battery anode, and the first conductive wire is a primary battery cathode, wherein the primary battery cathode can be used as a sacrificial wire to be preferentially corroded to consume water and oxygen, so that the problem that the efficiency and the service life of a device of the organic light-emitting structure are reduced due to the fact that a light-emitting function layer and a cathode in the organic light-emitting display panel are easily corroded by the permeated water and oxygen is solved, the organic light-emitting structure is prevented from being corroded by the permeated water and oxygen, and the light-emitting efficiency and the service life of the organic light-emitting display panel are ensured.

It should be noted that the organic light emitting display panel is not limited to two conductive lines, i.e., the first conductive line and the second conductive line, and for example, an even number of conductive lines may be further provided, where two adjacent conductive lines may spontaneously form a primary cell, including a primary cell anode and a primary cell cathode, which is not described herein again.

The materials of the first conductive wire and the second conductive wire can be made of the same material or different materials, and the materials of the first conductive wire and the second conductive wire can be at least one of aluminum, titanium and molybdenum.

Fig. 2 is a schematic structural diagram of another organic light emitting display panel provided in an embodiment of the present invention, and referring to fig. 2, optionally, the first conductive lines 131 and the second conductive lines 132 are made of the same material; the first conductive line 131 is connected to the first potential line 141, and the second conductive line 132 is connected to the second potential line 142; the potential on the first potential line 141 is higher than the potential on the second potential line 142, or the potential on the second potential line 142 is higher than the potential on the first potential line 141.

When the materials of the first conductive line 131 and the second conductive line 132 are the same, in order to enable the first conductive line 131 and the second conductive line 132 to form a galvanic cell effect, two potential signals with different heights can be introduced to the first conductive line 131 and the second conductive line 132, wherein the conductive line introduced with the lower potential signal is a negative electrode of the galvanic cell, and the conductive line introduced with the higher potential signal is a positive electrode of the galvanic cell, so that the first conductive line 131 introduced with the lower potential signal or the second conductive line 132 introduced with the lower potential signal is preferentially corroded to consume water and oxygen.

Further, the first conductive line 131 and the second conductive line 132 may be separately prepared by separately providing an additional process, or may be simultaneously prepared and formed in the original process of the organic light emitting display panel. Fig. 3 is a schematic cross-sectional structure view of the organic light emitting display panel shown in fig. 2, and referring to fig. 2 and 3, the organic light emitting display panel further includes a pixel driving circuit array layer 15, wherein the pixel driving circuit array layer 15 is located between the first substrate 11 and the organic light emitting structure array layer 12; the first conductive line 131 and the second conductive line 132 are disposed in the same layer and in the same layer as any one of the gate layer 151, the source drain layer 152, or the capacitor electrode layer 153 in the pixel driving circuit array layer 15, respectively. In fig. 3, for example, the first conductive line 131 and the second conductive line 132 are formed in the same layer and in the same process as the source/drain layer 152, and the first conductive line 131, the second conductive line 132 and the source/drain layer 152 are made of the same material. The skilled person can also dispose the first conductive line 131 and the second conductive line 132 on the gate layer 151 or the capacitor electrode layer 153 at the same layer according to practical situations, which is not limited herein.

Fig. 4 is another schematic cross-sectional structure diagram of the organic light emitting display panel shown in fig. 2, and referring to fig. 2 and 4, the organic light emitting display panel further includes a pixel driving circuit array layer 15, wherein the pixel driving circuit array layer 15 is located between the first substrate 11 and the organic light emitting structure array layer 15; alternatively, the first conductive line 131 and the second conductive line 132 are disposed in different layers and are formed in the same process as any two electrode layers of the gate layer 151, the source drain layer 152, or the capacitor electrode layer 153 in the pixel driving circuit array layer 15. Exemplarily, referring to fig. 4, wherein the first conductive line 131 and the second conductive line 132 are located at two different electrode layers, the first conductive line 131 is disposed at the same layer as the gate layer 151 and formed in the same process, and the second conductive line 132 is disposed at the same layer as the capacitor electrode layer 153 and formed in the same process, and in addition, since the gate layer 151 and the capacitor electrode layer 153 are formed of the same material, the materials of the first conductive line 131 and the second conductive line 132 are also the same correspondingly. Similarly, when the source-drain layer 152 is made of the same material as the gate layer 151, the first conductive line 131 and the second conductive line 132 may also be disposed on the source-drain layer 152 and the gate layer 151, respectively, and the positions of the first conductive line 131 and the second conductive line 132 are not limited herein.

The first conductive line 131 and the second conductive line 132 are respectively formed in the same layer and the same process as any one layer of the gate layer 151, the source drain layer 152 and the capacitor electrode layer 153 of the pixel driving circuit array layer 15 or any two layers of the same material, so that the process of manufacturing the organic light emitting display panel can be reduced, and the production cost can be reduced.

In addition to the first and second conductive lines and the electrode layers of the pixel driving circuit array layer 15 being formed in the same process, the first and second conductive lines and the common cathode layer may be disposed on the same layer. Fig. 5 is a schematic cross-sectional view illustrating another organic light emitting display panel according to an embodiment of the present invention, and referring to fig. 5, the organic light emitting structure array layer 12 includes a common cathode layer 121, and the first conductive line 131 and the second conductive line 132 are disposed at the same layer as the common cathode layer 121 and formed in the same process.

The common cathode layer 121 is usually formed by performing patterned deposition on a mask by a vacuum thermal evaporation process, and the first conductive line 131, the second conductive line 132, and the common cathode layer 121 can be formed by performing evaporation deposition on the mask at the same time.

With continued reference to fig. 1, wherein the materials of the first conductive line 131 and the second conductive line 132 are different, the metal activity of the first conductive line 131 is less than the metal activity of the second conductive line 132, or the metal activity of the second conductive line 132 is less than the metal activity of the first conductive line 131.

When the materials of the first conductive wire 131 and the second conductive wire 132 are different, a galvanic cell effect can be formed spontaneously according to the difference of the metal activities of the first conductive wire 131 and the second conductive wire 132, the conductive wire with small metal activity is easy to corrode so as to consume water and oxygen, namely, the conductive wire is used as the negative electrode of the galvanic cell, and the conductive wire with larger metal activity is used as the positive electrode of the galvanic cell.

Therefore, referring to fig. 1, the first conductive line 131 and the second conductive line 132 may be configured to be electrically floating, i.e., not connected with the conductive line or not connected with an electric signal, and only achieve the galvanic cell effect according to the metal activity difference of the first conductive line and the second conductive line, consuming water and oxygen. Certainly, when the galvanic cell effect is realized by simply utilizing the metal activity difference of the material, the corrosion effect of the galvanic cell effect is poor, namely the water and oxygen consumption capacity is insufficient, at this time, the first conductive wire can be connected with the first potential signal wire, and the second conductive wire can be connected with the second potential signal wire; the first potential signal is higher than the second potential signal, or the second potential signal is higher than the first potential signal, namely, the electric conducting wire is driven to corrode by utilizing the potential signal difference, and the consumption effect of water and oxygen is improved.

The positions of the first potential signal line and the second potential signal line are not limited in the present invention. For example, the first potential signal line and the second potential signal line may be disposed on the same layer as the first conductive line and the second conductive line, and may be formed by the same process, and the first potential signal line and the second potential signal line are directly connected to the first conductive line and the second conductive line by overlapping, respectively; or the first potential signal line and the second potential signal line are arranged in different layers with the first conductive line and the second conductive line, and the first potential signal line and the second potential signal line are respectively connected with the first conductive line and the second conductive line through via holes. Furthermore, in order to facilitate connection of the first potential signal line and the second potential signal line with a pad in the peripheral circuit region of the organic light-emitting display panel so as to input corresponding potential signals, the first potential signal line and the second potential signal line may be disposed in the pixel driving circuit array layer, or the driving signal line for connecting the pixel driving circuit in the pixel driving circuit array layer may be directly multiplexed into the first potential signal line and the second potential signal line, so as to reduce the complexity of wiring.

For the arrangement positions of the first conductive line and the second conductive line with different materials, those skilled in the art can also separately arrange additional preparation processes to form the first conductive line and the second conductive line. Similarly, the organic light emitting display panel can be formed by the same process as other processes of the organic light emitting display panel. Fig. 6 is a schematic cross-sectional structure view of another organic light emitting display panel according to an embodiment of the present invention, and referring to fig. 6, the organic light emitting display panel further includes a pixel driving circuit array layer 15, the pixel driving circuit array layer 15 is located between the first substrate 11 and the organic light emitting structure array layer 15; alternatively, the first conductive line 131 and the second conductive line 132 are disposed in different layers and are formed in the same process as any two of the gate layer 151, the source drain layer 152, and the capacitor electrode layer 153 in the pixel driving circuit array layer 15. Taking the organic light emitting display panel shown in fig. 6 as an example, the first conductive line 131 and the second conductive line 132 are made of different materials, wherein the first conductive line 131 is disposed in the same layer as the gate layer 151 and formed in the same process, and the second conductive line 132 is disposed in the same layer as the capacitor electrode layer 153 and formed in the same process. Of course, the first conductive line 131 may also be disposed on the source drain layer 152, and the second conductive line may be disposed on the gate layer 151, where the disposition positions of the first conductive layer 131 and the second conductive layer 132 are not limited.

With continued reference to fig. 3, 4, and 6, optionally, insulating layers of the film layer of the pixel driving circuit array layer 15 disposed on the same layer as the first conductive line 131 on a side facing away from the first substrate 11 do not overlap with the first conductive line 131; the insulating layers of the film layer of the pixel driving circuit array layer 15 disposed on the same layer as the second conductive line 132 and facing away from the first substrate 11 do not overlap with the second conductive line 132.

Wherein, a plurality of insulating layers are disposed between each electrode layer in the pixel driving circuit array layer 15, each insulating layer includes an interlayer dielectric layer 154 disposed between the gate layer 151 and the capacitor electrode layer 153, an interlayer insulating layer 155 disposed between the capacitor electrode layer 153 and the source drain electrode layer 152, and a planarization layer 156 disposed on the gate layer 151, when the first conductive line 131 and the second conductive line 132 are disposed in the same layer as any one or two layers of the gate layer 151, the source drain electrode layer 152, or the capacitor electrode layer 153 in the pixel driving circuit array layer 15, respectively, and formed by the same process, an insulating layer is formed on one side of the first conductive line 131 and the second conductive line 132 departing from the first substrate 11, and when the insulating layer covers the first conductive line and the second conductive line to a certain extent, the water and oxygen absorption effect of the conductive lines is affected, so that when each insulating layer is disposed, no insulating layer is formed on the first conductive layer and the second conductive layer, therefore, the first conducting layer and the second conducting layer can be guaranteed to be consumed by water and oxygen, and the organic light-emitting structure and the cathode in the organic light-emitting structure array layer are effectively prevented from being corroded by water and oxygen.

The embodiment of the invention also provides an organic light-emitting display panel, wherein the organic light-emitting display panel further comprises a thin film packaging layer, and the thin film packaging layer covers the organic light-emitting structure array layer; the first conductive wire and the second conductive wire are positioned between the thin film packaging layer and the first substrate; or the first conductive wire and the second conductive wire are positioned between any two adjacent film layers in the thin film packaging layer. Fig. 7 is a schematic structural diagram of another organic light emitting display panel provided by an embodiment of the present invention, and referring to fig. 7, the organic light emitting display panel further includes a thin film encapsulation layer 16, and the thin film encapsulation layer 16 covers the organic light emitting structure array layer 12; the first conductive line 131 and the second conductive line 132 are located between any adjacent two film layers in the thin film encapsulation layer 16.

The first conductive wire 131 and the second conductive wire 132 are disposed between the film encapsulation layer 16 and the first substrate 11, and can be used for absorbing water and oxygen permeated in a gap between the film encapsulation layer 16 and the first substrate 11, and the first conductive wire 131 and the second conductive wire 132 are disposed between any two adjacent film layers in the film encapsulation layer 16, which means that the first conductive wire 131 and the second conductive wire 132 can be disposed on the same layer, between the same two adjacent film layers, or on different layers, and between different two adjacent film layers, so that water and oxygen permeated in a gap between each film layer of the film encapsulation layer 16 can be absorbed, and the encapsulation performance of the film encapsulation layer 16 can be improved.

Fig. 8 is a plan view of still another organic light emitting display panel according to an embodiment of the present invention, and fig. 9 is a schematic cross-sectional view of the organic light emitting display panel shown in fig. 8 taken along the direction BB', and referring to fig. 8 and 9, the organic light emitting display panel further includes a first blocking dam 161 and a second blocking dam 162; the first blocking dam 161 surrounds the organic light emitting structure array layer 12, and the second blocking dam 162 surrounds the first blocking dam 161; the organic layer of the thin film encapsulation layer 16 is located in the area surrounded by the first barrier dam; the inorganic layer of the thin film encapsulation layer 16 spans at least the first barrier dam 161; the vertical projection of the first and second

conductive lines

131 and 132 on the first substrate 11 is located within the vertical projection of the first substrate 11 of the gap between the first and

second blocking dams

161 and 162.

As shown in fig. 9, when the first conductive line 131 and the second conductive line 132 are disposed in the pixel driving circuit array layer, a signal line disposed in the same layer of the gate layer, the source drain layer, or the capacitor electrode layer may extend to the non-display region, that is, may extend to the inner side of the first blocking dam, and when the first conductive line 131 and the second conductive line 132 are formed in the same process as a layer of the gate layer, the source drain layer, or the capacitor electrode layer, the first conductive line 131 and the second conductive line 132 may be disposed below the first blocking dam and the second blocking dam, that is, the vertical projection of the first conductive line 131 and the second conductive line 132 on the first substrate 11 is located in the vertical projection of the gap between the first blocking dam 161 and the second blocking dam 162 on the first substrate 11.

An embodiment of the present invention further provides a method for manufacturing an organic light emitting display panel, and fig. 10 is a flowchart of the method for manufacturing an organic light emitting display panel according to the embodiment of the present invention, and referring to fig. 10, the method for manufacturing an organic light emitting display panel includes:

s110, providing a first substrate;

the first substrate may be a rigid substrate or a flexible substrate, wherein the rigid substrate includes a glass substrate, and the flexible substrate may be made of an organic flexible material such as Polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. Also, the first substrate may be a transparent substrate, a translucent or opaque substrate.

S120, forming an organic light-emitting structure array layer on the first substrate, wherein the organic light-emitting structure array layer comprises a cathode;

in the organic light-emitting structure array, the preparation of each film layer can be performed by means of thermal evaporation, magnetron sputtering, solution coating and the like, and for example, the anode, the light-emitting functional layer and the cathode of the organic light-emitting structure in the organic light-emitting structure array can be formed by patterned deposition through a mask plate by means of vacuum thermal evaporation.

S130, at least forming a first conductive wire and a second conductive wire, wherein the orthographic projection of the first conductive wire on the first substrate surrounds the orthographic projection of the cathode on the first substrate, the orthographic projection of the second conductive wire on the first substrate surrounds the orthographic projection of the first conductive wire on the first substrate, the first conductive wire is the anode of the primary battery, and the second conductive wire is the cathode of the primary battery; or the second conducting wire is the anode of the primary battery, and the first conducting wire is the cathode of the primary battery.

It should be noted that, in the method for manufacturing an organic light emitting display panel provided in the embodiment of the present invention, the step of forming the hydrophobic structure may be performed before, during, or after the step of forming the organic light emitting structure array layer after the step of forming the first conductive line and the second conductive line on the display area of the first substrate in S130 and the step of forming the organic light emitting structure array layer on the display area of the first substrate, and the order of the steps depends on the arrangement positions of the first conductive line and the second conductive line.

According to the preparation method of the organic light-emitting display panel, the first conductive wire and the second conductive wire are formed in the organic light-emitting display panel, the orthographic projection of the first conductive wire on the first substrate is arranged to surround the orthographic projection of the cathode on the first substrate, and the orthographic projection of the second conductive wire on the first substrate surrounds the orthographic projection of the first conductive wire on the first substrate; by utilizing the principle of a primary battery, a first conducting wire is the positive electrode of the primary battery, and a second conducting wire is the negative electrode of the primary battery; or the second conductive wire is a primary battery anode, and the first conductive wire is a primary battery cathode, wherein the primary battery cathode can be used as a sacrificial wire to be preferentially corroded to consume water and oxygen, so that the problem that the efficiency and the service life of a device of the organic light-emitting structure are reduced due to the fact that a light-emitting function layer and a cathode in the organic light-emitting display panel are easily corroded by the permeated water and oxygen is solved, the organic light-emitting structure is prevented from being corroded by the permeated water and oxygen, and the light-emitting efficiency and the service life of the organic light-emitting display panel are ensured.

Continuing to refer to fig. 3, wherein the first conductive line 131 and the second conductive line 132 are in the same layer as the source/drain layer 152 in the pixel driving circuit array layer 15, therefore, another method for fabricating an organic light emitting display panel is provided in the embodiment of the present invention, fig. 11 is a flowchart of another method for fabricating an organic light emitting display panel provided in the embodiment of the present invention, and referring to fig. 3 and fig. 11, the method for fabricating an organic light emitting display panel includes:

s210, providing a first substrate;

s220, forming a pixel driving circuit array layer; the first conductive line and the second conductive line are arranged in the same layer, arranged in the same layer with any one of the gate layer, the source drain layer or the capacitor electrode layer in the pixel driving circuit array layer and formed in the same process.

In this regard, referring to fig. 3, the first conductive line 131 and the second conductive line 132 are formed in the same layer and in the same process as the source/drain layer 152 in the pixel driving circuit array layer 15, but the first conductive line 131 and the second conductive line 132 may also be formed in the same layer and in the same process as the gate layer 151 or in the same layer and in the same process as the capacitor electrode layer 153.

And S230, forming an organic light emitting structure array layer on the first substrate.

The step is to form an organic light emitting structure array layer on the pixel driving circuit array layer, wherein the pixel driving circuits in the pixel driving circuit array layer are connected with the organic light emitting structures in the organic light emitting structure array layer one by one.

With continuing reference to fig. 4, where the first conductive line 131 and the second conductive line 132 are located at two different electrode layers in the pixel driving circuit array layer, for the organic light emitting display panel shown in fig. 4, an embodiment of the present invention also provides a method for manufacturing an organic light emitting display panel, and fig. 12 is a flowchart of a method for manufacturing another organic light emitting display panel provided by an embodiment of the present invention, and with reference to fig. 12, the method for manufacturing includes:

s310, providing a first substrate;

s320, forming a pixel driving circuit array layer; the first conductive wire and the second conductive wire are arranged in different layers, are arranged in the same layer with any two layers of the grid layer, the source drain layer or the capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process.

When the two electrode layers are made of the same material, the first conductive line and the second conductive line can be disposed in the two electrode layers, as shown in fig. 4, the gate layer 151 and the capacitor electrode layer 153 are made of the same material, that is, the first conductive line 131 and the second conductive line 132 can be disposed on the gate layer 151 and the capacitor electrode layer 153, respectively.

And S330, forming an organic light-emitting structure array layer on the first substrate.

Similarly, for the organic light emitting display panel structure shown in fig. 5, an embodiment of the present invention also provides a method for manufacturing an organic light emitting display panel, and fig. 13 is a flowchart of a method for manufacturing another organic light emitting display panel provided in an embodiment of the present invention, and referring to fig. 13, the method for manufacturing includes:

s410, providing a first substrate;

s420, forming a pixel driving circuit array layer; the first conductive wire and the second conductive wire are arranged in different layers, are arranged in the same layer with any two layers made of different materials in a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process.

Exemplarily, referring to fig. 6, where the gate layer 151, the source drain layer 152, or the capacitor electrode layer 153 are all made of different materials, the first conductive line 131 and the second conductive line 32 may be formed in the same layer and process as the gate layer 151 and the capacitor electrode layer 153, respectively.

And S430, forming an organic light emitting structure array layer on the first substrate.

Further, when the first conductive line and the second conductive line are disposed in the pixel driving circuit, the pixel driving circuit array layer further includes insulating layers between the gate electrode layer and the capacitor electrode layer, between the capacitor electrode layer and the source drain electrode layer, and on the source drain electrode layer. Referring to fig. 3, 4 and 6, an embodiment of the present invention provides a method for manufacturing an organic light emitting display panel for the insulating layer, wherein the method further includes: and removing the insulating layer covering the first conductive line and the second conductive line in the pixel driving circuit array layer.

With continued reference to fig. 6, the method of fabricating an organic light emitting display panel further includes: s141, forming a thin film packaging layer 16; wherein the first conductive line 131 and the second conductive line 132 are located between the thin film encapsulation layer 16 and the first substrate 11.

Alternatively, referring to fig. 7, the preparation method may further include S142, forming a thin film encapsulation layer 16; wherein the first conductive line 131 and the second conductive line 132 are formed between any two adjacent film layers in the thin film package 16.

An organic light emitting display device is further provided in an embodiment of the present invention, fig. 14 is a schematic structural diagram of an organic light emitting display device provided in an embodiment of the present invention, and referring to fig. 14, the organic light emitting display device includes any one of the organic light emitting display panels 100 provided in an embodiment of the present invention. Since the organic light emitting display device adopts the organic light emitting display panel 100 provided by the embodiment of the invention, the display device also has the beneficial effects of the organic light emitting display panel of the above embodiment. It should be noted that the display device provided in the embodiments of the present invention may further include other circuits and devices for supporting normal operation of the display device, and the display device may be a mobile phone, a notebook computer, a pad, a watch, a VR/AR/MR, a television, and the like.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An organic light emitting display panel, comprising:

a first substrate;

the first conducting wire is a primary battery anode, and the second conducting wire is a primary battery cathode; or the second conducting wire is the anode of the primary battery, and the first conducting wire is the cathode of the primary battery;

the organic light-emitting display panel further comprises a pixel driving circuit array layer, wherein the pixel driving circuit array layer is positioned between the first substrate and the organic light-emitting structure array layer;

the first conducting wire and the second conducting wire are respectively arranged in the same layer with any one of a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer;

each insulating layer on one side, away from the first substrate, of a film layer arranged on the same layer as the first conductive line in the pixel driving circuit array layer is not overlapped with the first conductive line;

2. The organic light-emitting display panel according to claim 1, wherein the first conductive line and the second conductive line are the same material;

3. The organic light-emitting display panel according to claim 2,

the first conductive line and the second conductive line are disposed at the same layer;

or the first conductive line and the second conductive line are arranged in different layers.

4. The organic light-emitting display panel according to claim 1, wherein the first conductive line and the second conductive line are made of different materials, and wherein a metal activity of the first conductive line is smaller than a metal activity of the second conductive line, or wherein a metal activity of the second conductive line is smaller than a metal activity of the first conductive line;

5. The organic light-emitting display panel according to claim 4,

the first conductive wire and the second conductive wire are arranged in different layers and are respectively arranged in the same layer with any two layers of different materials in a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer.

6. The organic light-emitting display panel according to claim 1, wherein the material of each of the first conductive line and the second conductive line comprises at least one of aluminum, titanium, and molybdenum.

7. The organic light-emitting display panel according to claim 1, further comprising a thin film encapsulation layer covering the organic light-emitting structure array layer;

the first conductive line and the second conductive line are located between the thin film encapsulation layer and the first substrate.

8. A method for manufacturing an organic light emitting display panel includes:

providing a first substrate;

forming at least a first conductive line and a second conductive line, wherein an orthographic projection of the first conductive line on the first substrate surrounds an orthographic projection of the cathode on the first substrate, an orthographic projection of the second conductive line on the first substrate surrounds an orthographic projection of the first conductive line on the first substrate, the first conductive line is a primary battery positive electrode, and the second conductive line is a primary battery negative electrode; or the second conducting wire is the anode of the primary battery, and the first conducting wire is the cathode of the primary battery;

forming an organic light emitting structure array layer on the first substrate, the organic light emitting structure array layer including a cathode and further including:

forming a pixel driving circuit array layer;

the first conductive line and the second conductive line are arranged in the same layer, arranged in the same layer with any one of a gate layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer and formed in the same process; or the first conductive wire and the second conductive wire are arranged in different layers and are respectively arranged in the same layer with any two layers of the same material in the grid layer, the source drain layer or the capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process;

or the first conductive wire and the second conductive wire are arranged in different layers and are respectively arranged in the same layer with any two materials in a grid layer, a source drain layer or a capacitance electrode layer in the pixel driving circuit array layer and are formed in the same process;

the pixel driving circuit array layer further comprises insulating layers positioned between the grid layer and the capacitance electrode layer, between the capacitance electrode layer and the source drain electrode layer and on the source drain electrode layer; the method for preparing the organic light emitting display panel further comprises the following steps:

9. An organic light emitting display device comprising the organic light emitting display panel according to any one of claims 1 to 7.