CN110634922A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN110634922A CN110634922A CN201910906860.4A CN201910906860A CN110634922A CN 110634922 A CN110634922 A CN 110634922A CN 201910906860 A CN201910906860 A CN 201910906860A CN 110634922 A CN110634922 A CN 110634922A
- Authority
- CN
- China
- Prior art keywords
- layer
- electrode
- organic functional
- display panel
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
- H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises a plurality of sub-pixels, and each sub-pixel comprises a first electrode, a light-emitting layer and a second electrode which are sequentially stacked from a substrate; the light-emitting layer comprises a light-emitting material layer and an organic functional layer, the organic functional layer at least comprises a common organic functional layer, the common organic functional layers of the plurality of sub-pixels are connected into a whole layer, and the common organic functional layer is a film layer which is closest to the first electrode in the organic functional layers; be provided with the electric leakage layer between common organic functional layer and the base, the electric leakage layer includes a plurality of electric leakage blocks, the electric leakage block sets up between at least partial adjacent sub-pixel, and each electric leakage block all contacts with common organic functional layer, can make the horizontal current that flows from a certain sub-pixel to another sub-pixel in the common organic functional layer can flow away through the electric leakage block between two sub-pixels, make the illumination of a sub-pixel can not influence the bright or dark of other sub-pixels around, avoid the crosstalk that horizontal current caused.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology, organic light emitting display panels are increasingly widely used due to their advantages of high response amplitude, high color purity, wide viewing angle, foldability, low energy consumption, etc.
The organic light emitting display panel comprises a plurality of sub-pixels, and the conventional organic light emitting display panel has the problem of transverse crosstalk among the sub-pixels and influences the display effect of the display panel.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for reducing transverse crosstalk among sub-pixels and improving the display effect.
In a first aspect, an embodiment of the present invention provides a display panel, including:
the pixel structure comprises a substrate and a plurality of sub-pixels positioned on one side of the substrate, wherein each sub-pixel comprises a first electrode, a light-emitting layer and a second electrode which are sequentially stacked from the substrate;
the light-emitting layer comprises a light-emitting material layer and an organic functional layer, the organic functional layer at least comprises a common organic functional layer, the common organic functional layers of the plurality of sub-pixels are connected into a whole layer, and the common organic functional layer is a film layer which is closest to the first electrode in the organic functional layers;
a leakage layer is arranged between the common organic functional layer and the substrate and comprises a plurality of leakage blocks, the leakage blocks are arranged between at least part of adjacent sub-pixels, and each leakage block is in contact with the common organic functional layer.
Optionally, the leakage layer and the first electrode are arranged on the same layer, and the leakage block is insulated from the first electrode.
Optionally, the display panel further includes a pixel defining layer, the pixel defining layer including a plurality of first openings exposing the first electrodes and a plurality of second openings exposing the drain blocks;
optionally, the area of the second opening is smaller than the area of the first opening.
Optionally, the display panel further includes a pixel defining layer, and the drain block is disposed on a side of the pixel defining layer away from the substrate.
Optionally, a leakage block is disposed between each two adjacent sub-pixels.
Optionally, the leakage blocks are electrically connected with each other.
Optionally, the display panel includes a pixel driving circuit, the pixel driving circuit includes a driving signal output end, the first electrode is electrically connected to the driving signal output end, and a voltage on the leakage block is smaller than a voltage of the adjacent first electrode.
Optionally, the display panel further includes a first power line, the second electrode is electrically connected to the first power line, and the leakage block is electrically connected to the first power line.
Optionally, the common organic functional layer is disposed on a side of the light emitting material layer close to the first electrode or far away from the first electrode;
the organic functional layer comprises at least one of the following film layer structures:
a hole injection layer and a hole transport layer between the first electrode and the light emitting material layer, and an electron injection layer and an electron transport layer between the light emitting material layer and the second electrode;
the hole injection layer is positioned between the hole transport layer and the first electrode;
the electron injection layer is located between the electron transport layer and the second electrode.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in the first aspect.
The embodiment of the invention provides a display panel and a display device, wherein a leakage layer is arranged between a common organic functional layer and a substrate, the leakage layer comprises a plurality of leakage blocks, the leakage blocks are arranged between at least part of adjacent sub-pixels, and each leakage block is contacted with the common organic functional layer, so that when the display panel displays, transverse current flowing from one sub-pixel to another sub-pixel in the common organic functional layer can flow away through the leakage blocks between the two sub-pixels, the lighting of one sub-pixel cannot influence the brightness of other surrounding sub-pixels, the crosstalk caused by the transverse current is avoided, and the good display effect is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a display panel provided in this embodiment;
FIG. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 4 is a top view of a display panel according to an embodiment of the present invention;
FIG. 5 is a top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention;
FIG. 8 is a top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a 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.
As described in the background art, the conventional organic light emitting display panel has a problem of lateral crosstalk between sub-pixels (where a lateral direction does not refer to a certain direction, and a direction from a sub-pixel to any of its surrounding sub-pixels can be referred to as a lateral direction), which affects a display effect of the display panel. The inventor finds that the above problem occurs because each sub-pixel in the organic light emitting display panel generally includes at least one organic functional layer, the organic functional layer is generally a common layer, that is, the organic functional layers are arranged in a whole layer, the organic functional layers corresponding to the sub-pixels are connected to each other, and the partial organic functional layers have good conductivity and can be used as a transmission medium of current, so that when one sub-pixel is lighted, the current flows transversely to the surrounding sub-pixels through the organic functional layers, and further, the surrounding sub-pixels which should not be lighted originally can be lighted, and the display effect is affected.
In view of the above, the present embodiment provides a display panel, and fig. 1 is a schematic structural diagram of the display panel provided in the present embodiment, and referring to fig. 1, the display panel includes a substrate 110 and a plurality of sub-pixels 120 located on one side of the substrate 110, and each sub-pixel 120 includes a first electrode 130, a light emitting layer 140, and a second electrode 150, which are sequentially stacked from the substrate 110;
the light emitting layer 140 includes a light emitting material layer 141 and organic functional layers, the organic functional layers at least include a common organic functional layer 142, the common organic functional layers 142 of the plurality of sub-pixels 120 are connected to each other as a whole layer, and the common organic functional layer 142 is a film layer closest to the first electrode 130 among the organic functional layers;
a leakage layer 160 is disposed between the common organic functional layer 142 and the substrate 110, the leakage layer 160 includes a plurality of leakage blocks 161, the leakage blocks 161 are disposed between at least some of the adjacent sub-pixels 120, and each of the leakage blocks 161 is in contact with the common organic functional layer 142.
In particular, the substrate 110 may provide cushioning, protection, or support for the display panel. The substrate 110 may be a flexible substrate, and the material of the flexible substrate may be Polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), or the like, or may be a mixture of the foregoing materials. The substrate 110 may be a hard substrate formed of glass or the like.
The display panel further includes a plurality of sub-pixels 120 disposed on one side of the substrate 110, wherein the sub-pixels 120 in the display panel may all emit light of the same color, and may also include at least a red sub-pixel emitting red light, a green sub-pixel emitting green light, and a blue sub-pixel emitting blue light, so as to implement multi-color display.
Referring to fig. 1, the sub-pixel 120 may include a first electrode 130, a light emitting layer 140, and a second electrode 150 that are stacked, wherein the first electrode 130 is one of an anode and a cathode, and the second electrode 150 is the other of the anode and the cathode. Optionally, the first electrode 130 is an anode and the second electrode 150 is a cathode. The display panel provided by the embodiment of the invention can be of a top-emitting type or a bottom-emitting type. When the display panel is a top emission type display panel, the first electrode 130, i.e., the anode, is a reflective electrode, i.e., an opaque electrode, and the anode may have a three-layer structure, wherein the first layer and the third layer may be metal oxide layers, such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and Aluminum Zinc Oxide (AZO), and the middle second layer may be a metal layer (such as silver or copper). The cathode may be an ITO transparent electrode or a magnesium silver alloy. When the display panel is a bottom emission type display panel, the first electrode 130, i.e., the anode, is a light-transmitting electrode, the second electrode 150, i.e., the cathode, is a light-transmitting electrode, the cathode is a reflective electrode, the cathode is made of magnesium-aluminum alloy, and the like, and the anode can be made of ITO.
The emission layer 140 includes an emission material layer 141 and an organic functional layer, wherein an emission color of the sub-pixel 120 is related to an emission material of the emission material layer 141, for example, the emission material layers 141 of the red, green and blue sub-pixels may include different emission materials. The organic functional layer of the light emitting layer 140 may be at least one layer, and the organic functional layer may be disposed between the first electrode 130 and the light emitting material layer 141, or disposed between the second electrode 150 and the light emitting material layer 141. The organic functional layers include a common organic functional layer 142, and the common organic functional layers 142 of the respective sub-pixels 120 are connected to each other as a whole layer to connect the respective sub-pixels 120 in series. When the organic functional layer includes one film layer, the organic functional layer is the film layer closest to the first electrode 130 in the organic functional layers, and the organic functional layer is the common organic functional layer 142; when the organic functional layer includes a plurality of layers, the layer closest to the first electrode 130 among the plurality of layers is the common organic functional layer 142. When the organic functional layer includes a plurality of film layers, optionally, other organic functional layers except the common organic functional layer 142 may be a whole layer, so that when the organic light emitting display panel is manufactured, the organic functional layers are evaporated on the whole surface, and the process is simplified. Fig. 1 illustrates an example in which the display panel includes only one organic functional layer.
With reference to fig. 1, the display panel further includes a leakage layer 160 disposed between the common organic functional layer 142 and the substrate 110, the leakage layer 160 includes a plurality of leakage blocks 161, the material of the leakage blocks 161 may be a conductive material, such as a metal, and the leakage blocks 161 are in contact with the common organic functional layer 142, the leakage blocks 161 are disposed between at least some adjacent sub-pixels 120, so that when the display panel displays, a lateral current flowing from one sub-pixel 120 to another sub-pixel 120 in the common organic functional layer 142 may flow away through the leakage blocks 161 between the two sub-pixels 120, so that the lighting of one sub-pixel 120 may not affect the brightness of other sub-pixels 120 around, thereby avoiding crosstalk caused by the lateral current, and further ensuring a good display effect.
The display panel that this embodiment provided, through set up the leakage layer between common organic functional layer and basement, the leakage layer includes a plurality of leakage blocks, the leakage block sets up between at least partial adjacent sub-pixel, and each leakage block all contacts with common organic functional layer, can make display panel when showing, the horizontal current that flows to another sub-pixel from a certain sub-pixel can flow away through the leakage block between two sub-pixels in the common organic functional layer, and then make the illumination of a sub-pixel can not influence the bright and dark of other sub-pixels around, avoid the crosstalk that horizontal current caused, and then guarantee good display effect.
With reference to fig. 1, based on the above technical solution, optionally, the leakage layer 160 and the first electrode 130 are disposed on the same layer, and the leakage block 161 is insulated from the first electrode 130.
Specifically, the leakage layer 160 and the first electrode 130 are arranged on the same layer, so that the leakage block 161 of the leakage layer 160 and the first electrode 130 are manufactured in the same process, and the manufacturing process of the display panel cannot be increased due to the arrangement of the leakage block 161, and the manufacturing process of the display panel is simple on the basis of avoiding the transverse crosstalk. In addition, the leakage block 161 and the first electrode 130 are disposed on the same layer, so that an additional film layer is not required to be added to the display panel, thereby facilitating the thinning of the display panel. In the display panel of this embodiment, the leakage block 161 mainly functions to leak the lateral current between the adjacent sub-pixels 120, the voltage on the first electrode 130 is usually related to the gray scale displayed by the sub-pixels 120, the voltage on the leakage block 161 is usually different from the voltage on the first electrode 130, and the leakage block 161 and the first electrode 130 are arranged in an insulating manner, so that the voltage on the leakage block 161 can be prevented from affecting the voltage on the first electrode 130, and a good display effect can be ensured.
Fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 2, the display panel further includes a pixel defining layer 170, the pixel defining layer 170 includes a plurality of first openings 171 and a plurality of second openings 172, the first openings 171 expose the first electrodes 130, and the second openings 172 expose the drain blocks 161;
optionally, the area of the second opening 172 is smaller than the area of the first opening 171.
Specifically, the light emitting material layer 141 may be disposed in the first opening 171, and the light emitting material layer 141 in the first opening 171, the common organic functional layer 142, and the first electrode 130 and the second electrode 150 corresponding to the first opening 171 form the sub-pixel 120 for displaying. The corresponding position of the second opening 172 is not used for displaying, and therefore, the light emitting material layer 141 may be disposed in the second opening 172, or the light emitting material layer 141 may not be disposed. Optionally, the second opening 172 may not be provided with the light emitting material layer 141, but only include a film layer disposed in the entire layer in the light emitting layer 140, so that an evaporation mask used when evaporating the light emitting material is not needed to be provided with an opening at a position corresponding to the second opening 172, and the structure of the evaporation mask is relatively simple. Referring to fig. 2, since the common organic functional layer 142 is a film structure disposed in a whole layer, the common organic functional layer 142 is disposed in both the first opening 171 and the second opening 172, and the common organic functional layer 142 is in contact with the first electrode 130 and the leakage block 161, so that it can be ensured that the lateral current can flow away through the leakage block 161. Because the corresponding position of the second opening 172 is not used for displaying, the area of the second opening can be smaller than the area of the first opening 171, so that the area of the corresponding region of the second opening 172 in the display panel is smaller, and the area of the corresponding region of the first opening 171 is larger, thereby ensuring that the pixel density in the display panel is higher.
Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and referring to fig. 3, the display panel further includes a pixel defining layer 170, and the leakage block 161 is disposed on a side of the pixel defining layer 170 away from the substrate 110.
Specifically, when the pixel defining layer 170 is manufactured, the material of the pixel defining layer 170 is generally deposited first, and then a photolithography process is used to form a desired pattern of the pixel defining layer 170. The leakage block 161 is disposed on a side of the pixel defining layer 170 away from the substrate 110, so that the shape and the number of openings of the pixel defining layer 170 are the same as those of a display panel without the leakage block 161, and further, in a photolithography step for fabricating the pixel defining layer 170, a new mask is not required to be fabricated again, which is beneficial to reducing the fabrication cost of the display panel. Furthermore, an opening does not need to be additionally formed in the pixel defining layer 170 for the leakage layer 160, so that more openings corresponding to the sub-pixels 120 can be formed in the pixel defining layer 170, which is favorable for improving the pixel density.
Fig. 4 is a top view of a display panel according to an embodiment of the present invention, and referring to fig. 4, on the basis of the above technical solution, optionally, a leakage block 161 is disposed between adjacent sub-pixels 120.
Referring to fig. 4, specifically, the leakage blocks 161 are disposed between the adjacent sub-pixels 120, so that the lateral current flowing between the adjacent sub-pixels 120 in the common organic functional layer 142 of the display panel can flow away through the leakage blocks 161, and thus crosstalk does not occur between the sub-pixels 120 in the display panel, thereby further improving the display effect.
On the basis of the above technical solution, optionally, the leakage blocks 161 are electrically connected to each other.
Specifically, in order to ensure that the leakage block 161 can leak the lateral current flowing between two adjacent sub-pixels 120 in the common organic functional layer 142, a certain voltage needs to be applied to the leakage block 161. The way in which the leakage blocks 161 are electrically connected to each other may include two kinds:
one is that each leakage block 161 sets up independently (can refer to the display panel shown in fig. 4), but each independently set leakage block 161 is connected electrically through the signal line each other, and this kind of setting mode can make for each leakage block 161 insert a same voltage can, and then can make in the display panel for the power quantity of the voltage that leakage block 161 provided is few, one can, and then is favorable to reduce cost. And the power is generally arranged in the non-display area of the display panel, the number of the power is small, the area of the power occupying the non-display area is small, and the narrow frame of the display panel is favorably realized.
Secondly, the leakage blocks 161 are connected to each other to form a whole, fig. 5 is a top view of another display panel according to an embodiment of the present invention, referring to fig. 5, the leakage blocks 161 are connected to each other to form a whole, so that when a voltage is applied to the leakage blocks 161, the voltage is applied to the edge of the leakage layer 160 where the leakage blocks 161 are connected to each other to form a whole, and the voltage is applied to the entire leakage layer 160, and thus the voltage is not applied to the leakage blocks 161 located in the non-edge region of the display panel, which can simplify the wiring structure of the display panel.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention, fig. 7 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention, and referring to fig. 6 and fig. 7, based on the above technical solutions, optionally, the display panel further includes a pixel driving circuit 181, the pixel driving circuit 181 includes a driving signal output terminal OUT1, the first electrode 130 is electrically connected to the driving signal output terminal OUT1, and a voltage across the leakage block 161 is smaller than a voltage across an adjacent first electrode 130.
Specifically, the first electrode 130 of the sub-pixel 120 is electrically connected to the driving signal output terminal OUT1 of the pixel driving circuit 181, and further receives the driving signal output from the driving signal output terminal OUT1 to emit light, and the second electrode 150 of the sub-pixel 120 is electrically connected to the second potential signal input terminal VSS. Referring to fig. 8, the first electrode 130 is an anode of the sub-pixel 120, and the current flows from a high potential to a low potential in the flowing direction, so the voltage on the leakage block 161 is smaller than the voltage of the adjacent first electrode 130, and the common organic functional layer 142 is closest to the first electrode 130, so the potential of the common organic functional layer 142 is almost the same as the potential of the first electrode 130 of the sub-pixel 120 where the common organic functional layer is located, and thus it can be ensured that the current flowing laterally between the sub-pixels 120 can flow from the common organic functional layer 142 to the leakage block 161, and finally flows away from the leakage block 161, thereby avoiding the mutual crosstalk between the sub-pixels 120 and ensuring a good display effect.
In addition, the display panel further includes an array circuit layer 180, the array circuit layer 180 is located between the substrate 110 and the first electrodes 130, wherein the pixel driving circuits 181 are located in the array circuit layer 180, and each first electrode 130 may correspond to one pixel driving circuit 181. The pixel driving circuit 181 shown in fig. 8 is a 2T1C pixel circuit commonly used in the prior art, and the pixel driving circuit 181 includes a first transistor T1, a second transistor T2 and a storage capacitor Cst, wherein a gate and a source of the first transistor T1 are electrically connected to a Scan signal input terminal Scan and a Data signal input terminal Data, respectively, a drain of the first transistor T1 is connected to a gate of the second transistor T2, a source of the second transistor T2 is electrically connected to a first potential signal input terminal VDD, a drain of the second transistor is used as a driving signal output terminal OUT1, and two ends of the storage capacitor Cst are electrically connected to a gate and a source of the second transistor T2, respectively.
It should be noted that, in this embodiment, the pixel driving circuit 181 is only exemplarily shown as a 2T1C pixel circuit, and the present invention is not limited thereto, and in other embodiments, the pixel driving circuit 181 may further include a plurality of thin film transistors, for example, seven thin film transistors and one capacitor.
Fig. 8 is a top view of another display panel according to an embodiment of the present invention, and referring to fig. 8, the display panel further includes a first power line 182, the second electrode 150 is electrically connected to the first power line 182, and the leakage block 161 is electrically connected to the first power line 182.
Specifically, the second electrode 150 may be a cathode, and the first electrode 130 may be an anode. The first power line 182 is electrically connected to the cathode, and in combination with the pixel circuit shown in fig. 7, the first power line 182 is electrically connected to the second potential signal input terminal VSS so as to input a voltage signal to the cathode of the sub-pixel 120 through the second potential signal input terminal VSS, and the leakage block 161 is electrically connected to the first power line 182, so that the leakage block 161 and the cathode have the same potential. When the factor pixel 120 emits light, the anode voltage is higher than the cathode voltage, so the leakage block 161 is electrically connected to the first power line 182, which can ensure that the voltage of the leakage block 161 is lower than the anode voltage, and ensure that the current flowing transversely among the sub-pixels 120 can flow away from the leakage block 161, thereby avoiding the mutual crosstalk among the sub-pixels 120 and ensuring good display effect. In addition, no additional signal line is needed, and no additional power supply for supplying voltage to the leakage block 161 is needed, so that the number of signal lines in the display panel is reduced, and the wiring of the display panel is simplified; and the number of power supplies in the display panel cannot be increased, and the narrow frame of the display panel is favorably realized.
Fig. 8 illustrates only a case where the drain blocks 161 are integrally connected to each other in the display panel, and the drain blocks 161 are electrically connected to the first power supply line 182 through the connection portions 183. For the display panel in which each of the leakage blocks 161 is independently disposed, each of the leakage blocks 161 may still be connected to the first power line 182, and the embodiment of the invention is not limited in this respect.
Fig. 9 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, and fig. 10 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, and with reference to fig. 9 and fig. 10, on the basis of the above technical solutions, optionally, the common organic functional layer 142 is disposed on a side of the luminescent material layer 141 close to the first electrode 130 or far away from the first electrode 130;
the organic functional layer comprises at least one of the following film layer structures:
a hole injection layer 143, a hole transport layer 144, and an electron injection layer 145 and an electron transport layer 146 between the light emitting material layer 141 and the second electrode 150, between the first electrode 130 and the light emitting material layer 141;
the hole injection layer 143 is located between the hole transport layer 144 and the first electrode 130;
the electron injection layer 145 is located between the electron transport layer 146 and the second electrode 150.
Fig. 1 to 3 and fig. 6 are each exemplified by an example in which the common organic functional layer 142 is disposed on a side of the luminescent material layer 141 close to the first electrode 130, and referring to fig. 9, fig. 9 schematically illustrates a case where the display panel includes only one organic functional layer as the common organic functional layer 142 and is disposed on a side of the luminescent material layer 141 away from the first electrode 130, in which case the common organic functional layer 142 may be an electron injection layer or an electron transport layer, and in this case, a side of the luminescent material layer 141 close to the first electrode 130 does not include the organic functional layer.
Fig. 10 schematically illustrates a case where the display panel includes a hole injection layer 143, a hole transport layer 144, and an electron injection layer 145 and an electron transport layer 146 between the light emitting material and the second electrode 150 between the first electrode 130 and the light emitting material layer 141, and the hole injection layer 143 serves as the common organic functional layer 142 because the hole injection layer 143 is a film layer closest to the first electrode 130 among the organic functional layers. The hole transport layer 144 serves to transport holes of the first electrode 130 to the light emitting material layer 141. The hole injection layer 143 is used to improve the energy level matching between the anode layer and the hole transport layer 144, and since the energy levels of the first electrode 130 and the hole transport layer 144 are not matched in general, which results in low hole transport efficiency, a hole injection layer 143 is required to be disposed to reduce the injection barrier between the anode layer and the hole transport layer 144 and assist the injection of holes from the first electrode 130 to the hole transport layer 144. Similarly, the electron transport layer 146 functions to transport electrons of the second electrode 150 to the light emitting material layer 141, and the electron injection layer 145 functions to improve the energy level matching problem between the second electrode 150 and the electron transport layer 146.
Fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 11, a display device 10 according to an embodiment of the present invention includes the display panel 100 according to any embodiment of the present invention. The display device may be a mobile phone as shown in fig. 11, or may be a computer, a television, an intelligent wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.
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 (10)
1. A display panel, comprising:
the display device comprises a substrate and a plurality of sub-pixels positioned on one side of the substrate, wherein each sub-pixel comprises a first electrode, a light-emitting layer and a second electrode which are sequentially stacked from the substrate;
the light-emitting layer comprises a light-emitting material layer and organic functional layers, the organic functional layers at least comprise a common organic functional layer, the common organic functional layers of the sub-pixels are connected into a whole layer, and the common organic functional layer is a film layer which is closest to the first electrode in the organic functional layers;
and a leakage layer is arranged between the common organic functional layer and the substrate and comprises a plurality of leakage blocks, the leakage blocks are arranged between at least part of adjacent sub-pixels, and each leakage block is in contact with the common organic functional layer.
2. The display panel according to claim 1, wherein the leakage layer is provided in the same layer as the first electrode, and the leakage block is insulated from the first electrode.
3. The display panel according to claim 2,
the display panel further includes a pixel defining layer including a plurality of first openings exposing the first electrodes and a plurality of second openings exposing the leakage blocks;
preferably, the area of the second opening is smaller than the area of the first opening.
4. The display panel according to claim 1, further comprising a pixel defining layer, wherein the leakage block is disposed on a side of the pixel defining layer away from the substrate.
5. The display panel according to claim 1, wherein the leakage block is disposed between each of the adjacent sub-pixels.
6. The display panel according to claim 1, wherein the drain blocks are electrically connected to each other.
7. The display panel according to claim 1, further comprising a pixel driving circuit including a driving signal output terminal, wherein the first electrode is electrically connected to the driving signal output terminal, and wherein a voltage on the leakage block is smaller than a voltage of the adjacent first electrode.
8. The display panel according to claim 1, further comprising a first power supply line, wherein the second electrode is electrically connected to the first power supply line, and wherein the drain block is electrically connected to the first power supply line.
9. The display panel according to any one of claims 1 to 8, wherein the common organic functional layer is provided on a side of the luminescent material layer closer to or farther from the first electrode;
the organic functional layer comprises at least one of the following film layer structures:
a hole injection layer and a hole transport layer between the first electrode and the light emitting material layer, and an electron injection layer and an electron transport layer between the light emitting material layer and the second electrode;
the hole injection layer is positioned between the hole transport layer and the first electrode;
the electron injection layer is located between the electron transport layer and the second electrode.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906860.4A CN110634922A (en) | 2019-09-24 | 2019-09-24 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906860.4A CN110634922A (en) | 2019-09-24 | 2019-09-24 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110634922A true CN110634922A (en) | 2019-12-31 |
Family
ID=68974259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910906860.4A Pending CN110634922A (en) | 2019-09-24 | 2019-09-24 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110634922A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627976A (en) * | 2020-07-10 | 2020-09-04 | 上海视欧光电科技有限公司 | Organic light emitting display device |
| CN111710704A (en) * | 2020-06-29 | 2020-09-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111863929A (en) * | 2020-08-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN111863918A (en) * | 2020-07-29 | 2020-10-30 | 京东方科技集团股份有限公司 | Display back plate and manufacturing method thereof, display panel and display device |
| CN112086487A (en) * | 2020-09-03 | 2020-12-15 | 云谷（固安）科技有限公司 | Display panel and display device |
| WO2022039889A1 (en) | 2020-08-19 | 2022-02-24 | OLEDWorks LLC | Pixel circuit for crosstalk reduction |
| CN114300639A (en) * | 2021-12-29 | 2022-04-08 | 北京维信诺科技有限公司 | Display substrate, preparation method thereof and display panel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623485A (en) * | 2011-01-25 | 2012-08-01 | 索尼公司 | Organic EL display and electronic apparatus |
| US20150379938A1 (en) * | 2014-06-25 | 2015-12-31 | Apple Inc. | Organic Light-Emitting Diode Display With Reduced Lateral Leakage |
| US20160118449A1 (en) * | 2014-10-28 | 2016-04-28 | Japan Display Inc. | Display device |
| CN106449726A (en) * | 2016-12-27 | 2017-02-22 | 上海天马有机发光显示技术有限公司 | OLED (organic light-emitting diode) display device and manufacture method thereof |
| CN110190105A (en) * | 2019-06-11 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of display panel and its drive control method, display device |
-
2019
- 2019-09-24 CN CN201910906860.4A patent/CN110634922A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623485A (en) * | 2011-01-25 | 2012-08-01 | 索尼公司 | Organic EL display and electronic apparatus |
| US20150379938A1 (en) * | 2014-06-25 | 2015-12-31 | Apple Inc. | Organic Light-Emitting Diode Display With Reduced Lateral Leakage |
| US20160118449A1 (en) * | 2014-10-28 | 2016-04-28 | Japan Display Inc. | Display device |
| CN106449726A (en) * | 2016-12-27 | 2017-02-22 | 上海天马有机发光显示技术有限公司 | OLED (organic light-emitting diode) display device and manufacture method thereof |
| CN110190105A (en) * | 2019-06-11 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of display panel and its drive control method, display device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710704A (en) * | 2020-06-29 | 2020-09-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111710704B (en) * | 2020-06-29 | 2022-11-15 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111627976A (en) * | 2020-07-10 | 2020-09-04 | 上海视欧光电科技有限公司 | Organic light emitting display device |
| CN111627976B (en) * | 2020-07-10 | 2024-04-16 | 上海视涯技术有限公司 | Organic light emitting display device |
| CN111863918A (en) * | 2020-07-29 | 2020-10-30 | 京东方科技集团股份有限公司 | Display back plate and manufacturing method thereof, display panel and display device |
| CN111863918B (en) * | 2020-07-29 | 2023-05-02 | 京东方科技集团股份有限公司 | Display backboard, manufacturing method thereof, display panel and display device |
| WO2022039889A1 (en) | 2020-08-19 | 2022-02-24 | OLEDWorks LLC | Pixel circuit for crosstalk reduction |
| CN111863929A (en) * | 2020-08-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN111863929B (en) * | 2020-08-28 | 2024-02-20 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN112086487A (en) * | 2020-09-03 | 2020-12-15 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN114300639A (en) * | 2021-12-29 | 2022-04-08 | 北京维信诺科技有限公司 | Display substrate, preparation method thereof and display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112071882B (en) | Display substrate, preparation method thereof and display device | |
| CN110634922A (en) | Display panel and display device | |
| US11362167B2 (en) | Display substrate and display device | |
| CN110416226B (en) | Display panel, manufacturing method thereof and display device | |
| CN113644220B (en) | Display panel, preparation method of display panel and display device | |
| US7079093B2 (en) | Organic light emitting diodes display | |
| CN112086487B (en) | Display panel and display device | |
| CN111583793B (en) | Flexible display screen | |
| CN113724651A (en) | Array substrate and display panel | |
| CN115623879A (en) | Display substrate, display panel and display substrate manufacturing method | |
| CN219228311U (en) | Display substrate and display device | |
| US20240114731A1 (en) | Display panel and display device | |
| CN115768205A (en) | Display substrate and display device | |
| CN113485586B (en) | Touch display panel | |
| US12099676B2 (en) | Touch display panel | |
| CN115835730B (en) | Display substrate and display device | |
| WO2023230919A1 (en) | Display substrate and display device | |
| WO2023230915A1 (en) | Display substrates and display apparatus | |
| US11844255B2 (en) | Display device having a second electrode layer connected to an auxiliary electrode layer, display panel and manufacturing method thereof | |
| US20240008333A1 (en) | Display substrate and display device | |
| US20240268172A1 (en) | Display substrate and display device | |
| WO2023231004A9 (en) | Display panel and manufacturing method therefor, and display apparatus | |
| US20230422578A1 (en) | Display panels and methods of manufacturing the same, and display apparatuses | |
| CN113594212A (en) | Display panel, preparation method thereof and display device | |
| CN118301991A (en) | Display substrate and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191231 |
|
| RJ01 | Rejection of invention patent application after publication |