CN115394939A - Display panel and display device - Google Patents
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- CN115394939A CN115394939A CN202211086098.8A CN202211086098A CN115394939A CN 115394939 A CN115394939 A CN 115394939A CN 202211086098 A CN202211086098 A CN 202211086098A CN 115394939 A CN115394939 A CN 115394939A
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- 230000000903 blocking effect Effects 0.000 claims abstract description 26
- 230000004888 barrier function Effects 0.000 claims description 54
- 238000005192 partition Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 21
- 239000010409 thin film Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
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- 239000003990 capacitor Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000005525 hole transport Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a display panel and a display device, wherein the display panel comprises a plurality of sub-pixels, and also comprises a plurality of groups of first-class isolation retaining wall groups, at least one side of at least part of the sub-pixels is provided with the first-class isolation retaining wall groups, each first-class isolation retaining wall group comprises at least one first-class isolation retaining wall, each first-class isolation retaining wall comprises a plurality of retaining wall subsections, and the retaining wall subsections are in a strip shape; the blocking width of the first type of isolation retaining wall group is greater than the length of any retaining wall subsection in the first type of isolation retaining wall group. Therefore, by arranging the plurality of strip-shaped retaining wall subsections, the blocking width of the first type of isolation retaining wall group is greater than the length of any retaining wall subsection in the first type of isolation retaining wall group, the transverse leakage between different sub-pixels can be reduced, the phenomenon of stealing and lighting between the sub-pixels is avoided, and the display effect of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Display technologies are widely used for displaying televisions, mobile phones, and public information, and display panels for displaying pictures are also various and can display rich and colorful pictures.
At present, a light emitting element in an OLED generally includes a light emitting layer and a common auxiliary layer (exemplarily, an electron transport layer, a hole transport layer, etc.), the light emitting layer of each light emitting element is independent of each other, and the common auxiliary layer is connected to each other. However, due to the transport of electrons and/or holes in the common layer, the interconnected common auxiliary layer may cause lateral leakage from light emitting element to light emitting element, which may result in a phenomenon of sneaking light emitting element into color crosstalk.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for avoiding transverse leakage between adjacent sub-pixels and improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a plurality of sub-pixels;
the display panel also comprises a plurality of groups of first-class isolation baffle wall groups, and at least one side of at least part of the sub-pixels is provided with the first-class isolation baffle wall groups;
the first type isolation retaining wall group comprises at least one first type isolation retaining wall, the first type isolation retaining wall comprises a plurality of retaining wall subsections, and the retaining wall subsections are strip-shaped;
the blocking width of the first type of isolation retaining wall group is greater than the length of any retaining wall subsection in the first type of isolation retaining wall group.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to any one of the first aspects.
The display panel provided by the embodiment of the invention comprises a plurality of groups of first-class isolation retaining wall groups, wherein at least one side of at least part of the sub-pixels is provided with the first-class isolation retaining wall groups, each first-class isolation retaining wall group comprises at least one first-class isolation retaining wall, each first-class isolation retaining wall comprises a plurality of retaining wall subsections, each retaining wall subsection is in a strip shape, the blocking width of each first-class isolation retaining wall group is larger than the length of any retaining wall subsection in each first-class isolation retaining wall group, namely, the plurality of subsection retaining wall subsections form the first-class isolation retaining wall groups, so that the transverse leakage current between adjacent sub-pixels can be reduced, the phenomenon of surreptitious lighting between the adjacent sub-pixels is avoided, and the display effect of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 3 isbase:Sub>A schematic view ofbase:Sub>A cross-sectional view taken along line A-A' of FIG. 2;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a first type of partition wall according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first sub-pixel and a first kind of isolation barrier according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to 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 diagram of a display panel according to another embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A display panel according to an embodiment of the present invention, fig. 2 isbase:Sub>A schematic structural diagram of another display panel according to an embodiment of the present invention, fig. 3 isbase:Sub>A schematic structural diagram ofbase:Sub>A cross section alongbase:Sub>A-base:Sub>A' direction in fig. 2, and referring to fig. 1, fig. 2 and fig. 3, the display panel 1 according to an embodiment of the present invention includesbase:Sub>A plurality of sub-pixels 310, the display panel 1 further includesbase:Sub>A plurality of groups of first-type partition wall groups 40, and at least one side of at least some of the sub-pixels 310 is provided with the first-type partition wall group 40; the first type of isolation retaining wall group 40 comprises at least one first type of isolation retaining wall 410, the first type of isolation retaining wall 410 comprises a plurality of retaining wall sections 4101, and the retaining wall sections 4101 are strip-shaped; the blocking width of the first group of insulating barriers 40 is greater than the length of any one of the wall sections 4101 in the first group of insulating barriers 40. Illustratively, the display panel further includes a substrate 10, a driving circuit layer 20, and a pixel unit array 30, which are sequentially stacked. Specifically, the substrate 10 is used to support a film layer formed on one side thereof. The substrate 10 may be a rigid substrate, the exemplary material of the substrate 10 is glass, and the substrate 10 may also be a flexible substrate, and the material of the substrate 10 is not limited herein.
Specifically, the driving circuit layer 20 includes a plurality of pixel driving circuits for driving the sub-pixels 310, each pixel driving circuit includes at least one thin film transistor T, and the structure of the thin film transistor T may be a top gate structure or a bottom gate structure. Here, the structure of the thin film transistor T is not limited. For example, as shown in fig. 3, if the structure of the thin film transistor T is a top gate structure, the driving circuit layer 20 includes a buffer layer, an active layer, a first insulating layer, a gate metal layer, a second insulating layer, and a source drain metal layer, which are sequentially stacked along a direction in which the substrate 10 points to the driving circuit layer 20, a channel of the thin film transistor T is located in the active layer, a gate of the thin film transistor T is located in the gate metal layer, and a source and a drain of the thin film transistor T are located in the source drain metal layer. It should be noted that, in the embodiment of the present invention, a specific structure of the pixel driving circuit is not limited, and the pixel driving circuit may include two storage capacitors 1 of the thin film transistor, that is, a "2T1C" pixel driving circuit, and may also include seven storage capacitors 1 of the thin film transistor, that is, a "7T1C" pixel driving circuit, as long as the sub-pixel 310 can be normally driven to emit light for displaying.
The pixel unit array 30 includes a plurality of sub-pixels 310 arranged in an array, the sub-pixels 310 include a first electrode 320, a functional stack 330, and a second electrode 340 sequentially disposed near one side of the driving circuit layer 20, a drain of the thin film transistor T is connected to the first electrode 320, and the functional stack 330 may include a hole injection layer HIL, a hole transport layer HTL, an emitting layer EML, an electron transport layer ETL, and an electron injection layer EIL, which are stacked. Specifically, when no voltage is applied to the first electrode 320 and the second electrode 340, the sub-pixel 310 does not emit light, and when a voltage is applied to the first electrode 320 and the second electrode 340, the first electrode 320 injects holes into the hole injection layer HIL, the second electrode 340 injects electrons into the electron injection layer EIL, and the holes and the electrons are recombined in the light emitting layer EML to form a photo-exciton and emit light by radiation.
As described above, since the hole injection layer HIL contacting the first electrode 110 is doped with a p-type dopant having high conductivity, it may become a main cause of lateral current leakage when the hole injection layers HIL between adjacent sub-pixels are connected to each other. Therefore, in the embodiment of the present invention, the first-type isolation retaining wall group 40 includes at least one first-type isolation retaining wall 410, the first-type isolation retaining wall 410 includes a plurality of strip-shaped retaining wall subsections 4101, and the blocking width of the first-type isolation retaining wall group 40 is greater than the length of any retaining wall subsection 4101 in the first-type isolation retaining wall group 40, that is, the sum of the projection lengths of the plurality of retaining wall subsections 4101 in the blocking width direction of the first-type isolation retaining wall group 40 is greater than the length of any retaining wall subsection 4101 in the first-type isolation retaining wall group 40, so that the blocking effect of the lateral leakage flow between adjacent sub-pixels 310 can be improved, the phenomenon of the surging between the sub-pixels can be avoided, and the display effect of the display panel can be further improved. It can be understood that the blocking width direction of the first-type isolation barrier group 40 intersects with the connection line direction of two adjacent sub-pixels, so that the leakage difficulty of the lateral current between the adjacent sub-pixels 310 can be increased, and the blocking effect of the lateral current leakage between the adjacent sub-pixels 310 can be improved.
Optionally, at least one side of at least some of the sub-pixels 310 is provided with the first type of isolation barrier group 40, it may be understood that the first type of isolation barrier group 40 is disposed on one side or multiple sides of some of the sub-pixels 310, and it may also be understood that the first type of isolation barrier group 40 is disposed on one side or multiple sides of all the sub-pixels 310, which is not limited in this embodiment of the present invention. Further, the first-type isolation barrier group 40 may be disposed between adjacent sub-pixels, so as to fully block leakage between different sub-pixels, and improve the blocking effect of lateral leakage between adjacent sub-pixels 310.
Optionally, the blocking width of the first type of isolation retaining wall group 40 is greater than the length of any retaining wall part 4101 in the first type of isolation retaining wall group 40, a gap may exist between two adjacent retaining wall parts 4101 as shown in fig. 1, or the extending directions of two retaining wall parts 4101 may intersect as shown in fig. 2, so that the overall blocking width of the first type of isolation retaining wall group 40 is greater than the length of any retaining wall part 4101 in the first type of isolation retaining wall group 40, and the blocking effect of the transverse leakage flow is improved.
Further, the first isolation retaining wall 410 may be an inverted trapezoid isolation retaining wall, that is, the bottom dimension of the first isolation retaining wall 410 is smaller than the top dimension, so that the functional stack 330 can be cut off more easily at the bottom corner of the inverted trapezoid isolation retaining wall during deposition, forming an "undercut" structure, and further blocking the lateral leakage flow between adjacent sub-pixels. In other embodiments, the first isolation wall 410 may also be an isolation wall with other shapes, but the invention is not limited thereto. Further, taking the organic light emitting diode display panel shown in fig. 3 as an example, the first isolation wall 410 provided in the embodiment of the present invention may be a structure formed on the pixel defining layer 350, that is, the first isolation wall 410 and the pixel defining layer 350 may be structures independent of each other, that is, the arrangement of the first isolation wall 410 does not affect the arrangement manner of the pixel defining layer 350, so as to ensure that the pixel defining layer 350 can normally realize the function of defining the sub-pixel region, and the height of the first isolation wall 410 can be defined as required without being limited to the height of the pixel defining layer 350, so as to sufficiently ensure the effect of the first isolation wall 410 on the isolation between the lateral leakage currents between different sub-pixels.
It should be noted that the specific shape of the first type of isolation retaining wall 410 is not limited in the embodiment of the present invention, and the number of retaining wall sections 4101 included in the first type of isolation retaining wall 410 is also not limited, fig. 1 only illustrates that the first type of isolation retaining wall 410 includes two retaining wall sections 4101 with the same extending direction, and fig. 2 only illustrates that the first type of isolation retaining wall 410 includes two retaining wall sections 4101 with the extending directions intersecting each other. In the embodiment of the present invention, it is only necessary to ensure that the blocking width of the first type of isolation barrier group 40 is greater than the length of any one of the barrier subsections 4101 in the first type of isolation barrier group 40, and the partition redundancy between two adjacent sub-pixels 410 can be increased.
It should be further noted that, in the embodiment of the present invention, specific shapes of the sub-pixels are not limited, and fig. 1 and fig. 2 only illustrate, but are not limited to, that the shapes of the sub-pixels are hexagons, and the arrangement of the sub-pixels in the embodiment of the present invention is also not limited, and a plurality of sub-pixels may be arranged in the sub-pixel arrangement shown in fig. 1 and fig. 2, or a plurality of sub-pixels may also be arranged in other sub-pixel arrangements, for example, a plurality of sub-pixels may be arranged in a "diamond" type arrangement.
It should be noted that fig. 1 and fig. 2 illustrate the first isolation wall 410 as an isolation wall, and in another embodiment, the first isolation wall 410 in fig. 1 and fig. 2 may also be an opening, so as to achieve the effect of isolating the lateral leakage between the sub-pixels.
It should be further noted that, the embodiment of the present invention may further include other structures required for ensuring the normal operation of the display panel, which are not described in detail herein.
In summary, in the display panel provided in the embodiment of the present invention, the first-type isolation barrier wall group is disposed on at least one side of at least some of the sub-pixels, and the first-type isolation barrier wall group includes at least one first-type isolation barrier wall, and the first-type isolation barrier wall is used to isolate the lateral leakage current between adjacent sub-pixels; meanwhile, the first type of isolation retaining wall is arranged to comprise a plurality of retaining wall subsections, the blocking width of the first type of isolation retaining wall group is larger than the length of any retaining wall subsection in the first type of isolation retaining wall group, the isolation redundancy between adjacent sub-pixels can be increased, namely, the surrounding degree of each side of each sub-pixel is increased, the isolation range between two pixels is enlarged, the transverse leakage current can be further reduced, and the display effect of the display panel is improved.
In addition to the above embodiments, with continued reference to fig. 2 and 3, there are two wall sections 4101 that intersect in their direction of extension.
Optionally, as shown in fig. 2 and fig. 3, the first-type isolation retaining wall group 40 includes at least one first-type isolation retaining wall 410, and the extension direction of two retaining wall subsections 4101 of the first-type isolation retaining wall 410 is intersected, that is, the extension aspect of the first-type isolation retaining wall 410 is changed, compared with a linear isolation retaining wall, the first-type isolation retaining wall 410 provided in the embodiment of the present invention has a higher enclosure degree on the side of the sub-pixel 410, so that the isolation redundancy between two adjacent sub-pixels 410 can be increased, the isolation range between two sub-pixels is enlarged, the isolation effect of the lateral leakage current is improved, and further, the display effect of the display panel is improved. Further, in a plurality of wall sections 4101 in the same first type of isolation wall 410, extending directions of two wall sections 4101 are intersected, as shown in fig. 2, the two wall sections 4101 with the intersecting extending directions are connected with each other and integrally arranged, or a gap (not shown in the figure) exists between the two wall sections 4101 with the intersecting extending directions, in the embodiment of the present invention, a specific arrangement manner of the two wall sections with the intersecting extending directions is not limited, and it is only required to ensure that a blocking width of the first type of isolation wall group is greater than a length of any wall section in the first type of isolation wall group, and the extending directions of the two wall sections are intersected, so that a blocking redundancy between two adjacent sub-pixels 410 is fully increased, a blocking range between the two sub-pixels is enlarged, and a blocking effect of a transverse leakage flow is improved.
On the basis of the foregoing embodiment, fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 5 is a schematic structural diagram of a first kind of isolation barrier wall according to an embodiment of the present invention, as shown in fig. 3, fig. 4 and fig. 5, the sub-pixel 310 includes a cathode 340, the display panel 1 further includes a cathode signal output terminal 50, the cathode 340 is electrically connected to the cathode signal output terminal 50, a direction in which a center of the cathode points to the cathode signal output terminal 50 is a first direction X, a projection length of the first kind of isolation barrier wall 410 in the first direction X is L1, a projection length in a second direction Y is L2, the second direction Y is orthogonal to the first direction X, where L1 > L2.
The second electrode 340 of the sub-pixel 310 may be a cathode, and the display panel further includes a cathode signal output terminal 50, wherein the cathode signal output terminal 50 is electrically connected to the cathode for transmitting a cathode signal, such as a PVEE signal, to the cathode. Specifically, the cathode signal output terminal 50 may be located in the non-display area AB, the cathode may include a portion located in the display area AA and a portion located in the non-display area AB, and the portion located in the non-display area AB of the cathode is electrically connected to the cathode signal output terminal 50 located in the non-display area AB, thereby achieving normal transmission of the cathode signal. Based on the above connection structure, the flowing direction of the current transmitted in the cathode may be specifically the direction in which the center of the cathode points to the cathode signal output terminal 50, and may also be understood as the direction in which the display area AA points to the cathode signal output terminal 50. Further, since the first-type isolation barrier wall 410 can isolate the transverse leakage current, but the cathode resistance is increased, and further, by setting the projection length L1 of the first-type isolation barrier wall 410 in the first direction X to be greater than the projection length L2 of the first-type isolation barrier wall 410 in the second direction Y, the blocking of the first-type isolation barrier wall 410 to the current in the current direction is reduced, that is, the resistance of the first-type isolation barrier wall 410 is reduced while the transverse leakage current between the adjacent sub-pixels 310 is isolated, so that the display effect of the display panel is improved.
Alternatively, based on the above embodiment, with continued reference to fig. 5, the first type of retaining wall 410 includes wall portions 4101 extending in parallel with the first direction X and wall portions 4102 extending in a direction intersecting the first direction X.
Specifically, the projection length L1 of the first isolation retaining wall 410 in the first direction X is greater than the projection length L2 of the first isolation retaining wall 410 in the second direction Y, and the first isolation retaining wall 410 may include a retaining wall subsection 4101 having an extending direction parallel to the first direction X and a retaining wall subsection 4102 having an extending direction intersecting with the first direction X, that is, one of the retaining wall subsections 4101 of the first isolation retaining wall 410 extends in the current flowing direction, and the other retaining wall subsection 4101 of the first isolation retaining wall 410 extends in the direction intersecting with the current flowing direction, so that the resistance of the first isolation retaining wall 410 is reduced in order to reduce the lateral leakage current between two similar sub-pixels, thereby avoiding the loss of the current on the first isolation retaining wall 410 and ensuring the display effect of the display panel.
It should be noted that the extending direction of the retaining wall part 4102 is not limited in the embodiment of the present invention, and the smaller the included angle between the extending direction of the retaining wall part 4102 and the first direction X, the smaller the resistance of the first type of isolation retaining wall 410. In addition, in order to ensure that the degree of enclosing the sub-pixels 310 by the first-type isolation wall 410 is high, the included angle between the extending direction of the wall part 4102 and the first direction cannot be too small, and the first-type isolation wall can be specifically configured according to actual needs.
Optionally, on the basis of the above embodiment, with continued reference to fig. 1 and fig. 2, the sub-pixel 310 includes a first sub-pixel 3101, and the turn-on voltage of the first sub-pixel 3101 is greater than the turn-on voltages of the other sub-pixels 310; at least one side of the first subpixel 3101 is provided with a first-type partition wall group 40.
The turn-on voltage may be a start-up voltage for the sub-pixel 310 to emit light normally, and since the turn-on voltage of the first sub-pixel 3101 is greater than the turn-on voltages of the other sub-pixels 310, the first sub-pixel 3101 may leak to the other sub-pixels. In the embodiment of the present invention, the first-type isolation barrier group 40 is disposed on at least one side of the first subpixel 3101, that is, the first-type isolation barrier group 40 may be disposed on one side of the first subpixel 3101, or the first subpixel 3101 is surrounded by the first-type isolation barrier group 40, so as to block a current path from the first subpixel 3101 to other subpixels, and in addition, the first-type isolation barrier group 40 may be disposed on at least one side of all subpixels 310, which is not limited in the present invention.
It can be understood that the color of the light emitted from the first sub-pixel is different according to the light emitting manner of the sub-pixel. Taking the sub-pixels as organic light emitting diodes as an example, the turn-on voltage of the blue sub-pixel is greater than the turn-on voltages of the sub-pixels of other colors, so the first sub-pixel may be a blue sub-pixel, and the other sub-pixels may be a red sub-pixel or a green sub-pixel. The embodiment of the invention does not display the specific light-emitting color of the sub-pixel, and the first sub-pixel only refers to the sub-pixel with larger lighting voltage.
Optionally, with continued reference to fig. 2, at least a portion of the first-type isolation walls 410 is convex toward a side away from the first sub-pixel 3101.
Specifically, the first-type isolation wall 410 corresponding to the first subpixel 3101 protrudes toward the side away from the first subpixel 3101, so that the edge contour of the first-type isolation wall 410 and the edge contour of the first subpixel 3101 are similar, the distance between the first-type isolation wall 410 and the first subpixel 3101 can be reduced, the distance between adjacent subpixels can be further reduced, the space utilization rate can be improved, more subpixels can be arranged in the saved space, and the high-resolution display panel can be realized.
It should be noted that, in order to improve the space utilization, it is necessary to set the edge profile of the first isolation wall 410 to be similar to the edge profile of the first sub-pixel 3101, and the shape of the first sub-pixel 3101 is not fixed, so the shape of the first isolation wall 410 is also not fixed, and in general, the shape of the first isolation wall 410 may be a broken line or a curve, specifically, the plurality of wall sections 4101 include straight wall sections; and/or, the plurality of wall sections 4101 can include curved wall sections that form a first type of break-line wall 410; and/or, the curved first-type isolation wall 410, in the broken-line first-type isolation wall 410, an included angle between two straight-line wall sections towards the first sub-pixel 3101 is less than 180 degrees, that is, the first-type isolation wall 410 protrudes towards the side far away from the first sub-pixel 3101; in the curved first-type isolation wall 410, the convex surface of the first-type isolation wall 410 faces away from the first sub-pixel 3101.
On the basis of the foregoing embodiment, fig. 6 is a schematic structural diagram of a first sub-pixel and a first kind of isolation barrier according to an embodiment of the present invention, as shown in fig. 6, the first sub-pixel 3101 includes an anode, and along a direction in which the first sub-pixel 3101 points to the first kind of isolation barrier 410, a minimum distance between the anode and the same first kind of isolation barrier 410 is D1, and a maximum distance is D2; wherein (D2-D1)/D1 is less than or equal to 50 percent.
Specifically, the first sub-pixel 3101 includes an anode 3102, as shown in fig. 6, along the direction that the first sub-pixel 3101 points to the first-type isolation wall 410, the minimum distance between the anode 3102 and the same first-type isolation wall 410 is D1, the maximum distance is D2, and (D2-D1)/D1 is less than or equal to 50%), that is, the difference between the minimum distance and the maximum distance between the anode 3102 and the same first-type isolation wall 410 is small, so that it can be ensured that the edge contour of the first sub-pixel 3101 and the edge contour of the first-type isolation wall 410 are similar patterns or approximate similar patterns, the distance between the first-type isolation wall 410 and the first sub-pixel 3101 can be reduced, further the distance between adjacent sub-pixels can be reduced, which is beneficial for improving the space utilization, more sub-pixels can be disposed in the saved space, and is beneficial for realizing a high resolution display panel. For example, (D2-D1)/D1 =0, that is, D1= D2, may be set, that is, the outline shape surrounded by the plurality of first isolation walls 410 is similar to the outline shape of the first sub-pixel, so as to reduce the distance between the first isolation walls 410 and the first sub-pixel 3101 to the maximum extent, reduce the pitch between the adjacent sub-pixels to the maximum extent, and improve the display resolution of the display panel to the maximum extent.
Optionally, fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention, referring to fig. 7, the sub-pixel 310 further includes a second sub-pixel 3102, the first-type isolation barrier group 40 includes a first isolation barrier 420 and a second isolation barrier 430 disposed between the first sub-pixel 3101 and the second sub-pixel 3102, the first isolation barrier 420 is located on a side of the second isolation barrier 430 close to the first sub-pixel 3101, and the second isolation barrier 430 is located on a side of the first isolation barrier 420 close to the second sub-pixel 3102; the first isolation walls 420 protrude toward a side away from the first sub-pixel 3101, and the second isolation walls 430 protrude toward a side away from the second sub-pixel 3102.
Specifically, the second sub-pixel 3102 may be a sub-pixel disposed adjacent to the first sub-pixel 3101, and the first-type isolation retaining wall group 40 includes a first isolation retaining wall 420 and a second isolation retaining wall 430, wherein the first isolation retaining wall 420 is located on a side of the second isolation retaining wall 430 close to the first sub-pixel 3101, and the first isolation retaining wall 420 protrudes toward a side away from the first sub-pixel 3101, i.e., in the first isolation retaining wall 420, an included angle between two retaining wall subsections facing the first sub-pixel 3101 side is less than 180 degrees, so that an edge contour of the first sub-pixel 3101 is similar to or approximately similar to an edge contour of the first-type isolation retaining wall 410, and further, in the second isolation retaining wall 430 is located on a side of the first isolation retaining wall 420 close to the second sub-pixel 3102, and the second isolation retaining wall 430 protrudes toward a side away from the second sub-pixel 3102, i.e., in the second isolation retaining wall 430, an included angle between two retaining walls 430 facing the second sub-pixel 3102 side is less than 180 degrees, so that an edge contour of the second sub-pixel 3102 is similar to or approximately similar to an edge contour of the second-type retaining wall 430. The first isolation retaining wall 420 protrudes toward a side away from the first sub-pixel 3101, and the second isolation retaining wall 430 protrudes toward a side away from the second sub-pixel 3102, that is, the protrusion of the first isolation retaining wall 420 is opposite to the protrusion of the second isolation retaining wall 430 (it can be understood that the first isolation retaining wall 420 and the second isolation retaining wall are arranged back to back), so that it can be ensured that edge profiles of the first isolation retaining wall group 420 and the second isolation retaining wall 430 are respectively matched with the profiles of the first sub-pixel 3101 and the second sub-pixel 3102, which is beneficial to reducing the spacing between sub-pixels, improving the space utilization rate, and further realizing a high-resolution display panel.
It should be noted that the colors of the first sub-pixel 3101 and the second sub-pixel 3102 may be the same or different, which is not limited by the present invention, and moreover, fig. 6 exemplarily illustrates that the first isolation wall 420 and the second isolation wall 430 are broken-line type, in other embodiments, both the first isolation wall 420 and the second isolation wall 430 may be curved, or one of the first isolation wall 420 and the second isolation wall 430 is broken-line type, and the other is curved, which may be specifically configured according to the edge profile of the sub-pixel, which is not limited by the present invention.
Optionally, referring to fig. 2, fig. 6 and fig. 7, the plurality of first-type isolation barrier groups 40 are arranged around the first sub-pixel 3101, so that the partition redundancy between two adjacent sub-pixels 410 can be increased, the surrounding degree of each side of the sub-pixel 310 is higher, the partition range between the two sub-pixels is enlarged, the partition effect of the transverse leakage flow is improved, and the display effect of the display panel is further improved.
Optionally, fig. 8 is a schematic structural diagram of another display panel provided in the embodiment of the present invention, and fig. 9 is a schematic structural diagram of another display panel provided in the embodiment of the present invention; referring to fig. 3, 8 and 9, the display panel further includes a plurality of second type partition wall groups 50, the second type partition wall group 50 includes at least one second type partition wall 510, and the second type partition wall group 50 is disposed between two adjacent first type partition wall groups 40; the sub-pixel 310 includes a cathode, a cathode current is transmitted in the cathode, a flowing direction of the cathode current is a first direction X, and an extending direction of the second-type isolation wall 510 is parallel to the first direction X.
Specifically, the display panel provided in the embodiment of the present invention may further include a plurality of second-type isolation barrier wall groups 50, where the second-type isolation barrier wall group 50 includes at least one second-type isolation barrier wall 510, and the second-type isolation barrier wall group 50 is disposed between two adjacent first-type isolation barrier wall groups 410, so that the first-type isolation barrier wall group 410 and the second-type isolation barrier wall 510 act together, and the enclosure degree of the isolation barrier wall on the side of the pixel can be increased, the partition range between two sub-pixels is enlarged, the partition effect of the lateral leakage current is improved, and further the display effect of the display panel is improved. Furthermore, the extending direction of the second isolation wall 510 is parallel to the first direction X, that is, the extending direction of the second isolation wall 510 is parallel to the current direction, the increase of the second isolation wall 51 does not affect the cathode current flow, and further does not increase the resistance, so as to improve the blocking effect of the lateral leakage current, and simultaneously, the increase of the resistance can be reduced as much as possible, thereby improving the display effect of the display panel.
It should be noted that, when the second type of isolation retaining wall group 50 exists, the first type of isolation retaining wall group 40 may be formed by a plurality of retaining wall sections 4101 distributed at intervals and the extending directions thereof do not intersect (as shown in fig. 9), or two retaining wall sections 4101 may exist and the extending directions thereof intersect, and the plurality of retaining wall sections 4101 are integrated (as shown in fig. 8), which can be set by those skilled in the art according to actual needs.
Alternatively, fig. 10 is a schematic structural view of another display panel provided by an embodiment of the present invention, fig. 11 is a schematic structural view of another display panel provided by an embodiment of the present invention, and referring to fig. 1, fig. 10 and fig. 11, in the same first type of isolation retaining wall 410, a gap exists between two retaining wall portions 4101.
Specifically, there is a gap between the two wall portions 4101, which can be understood as dividing the first isolation wall 410 integrally disposed in the above embodiment into two wall portions 4101 that are not connected, as shown in fig. 1, fig. 10 and fig. 11, so that on the basis of ensuring the degree of the first isolation wall 410 surrounding the sub-pixel 310, the resistance of the first isolation wall 410 can be reduced, the loss of current in the transmission process can be reduced, and the display effect of the display panel can be ensured. In addition, a gap is formed between two retaining wall subsections 4101 in the first type of isolation retaining wall 410, so that the design flexibility of the first type of isolation retaining wall 410 can be increased, the design diversity of the first type of isolation retaining wall 410 can be ensured, and different use requirements can be met. It should be noted that, as shown in fig. 10, when there are two wall portions 4101 intersecting in the extending direction and there is a gap between the two wall portions 4101, the overall profile of the first-type isolation wall 410 is still "V" shape, so as to ensure the enclosing degree of the sub-pixel 310 side and the blocking degree of the leakage current.
Alternatively, with continued reference to fig. 10 and 11, the first plurality of insulation walls 40 comprises at least two first insulation walls 410; along the direction that the sub-pixel 310 points to the first-type isolation retaining wall group 40, the at least two first-type isolation retaining walls 410 include an ith first-type isolation retaining wall and a jth first-type isolation retaining wall which are sequentially arranged, wherein i and j are positive integers, and i is not equal to j; along the direction of the sub-pixel 310 pointing to the first isolation wall 410, the jth first isolation wall covers the gap in the ith first isolation wall, and/or the ith first isolation wall covers the gap in the jth first isolation wall.
Specifically, in fig. 10 and 11, i =1,j =2 is taken as an example for explanation, referring to fig. 10 and 11, the first-type isolation retaining wall group 40 includes two first-type isolation retaining walls 410, and along the direction in which the sub-pixel 310 points to the first-type isolation retaining wall 410, the 2 nd first-type isolation retaining wall covers the gap in the 1 st first-type isolation retaining wall, and/or the 1 st first-type isolation retaining wall covers the gap in the 2 nd first-type isolation retaining wall, that is, the leakage flow that can pass through the gap of the i-th first-type isolation retaining wall 410 is blocked by the j-th first-type isolation retaining wall 410, so that the degree of enclosure of the isolation retaining wall to the side edge of the sub-retaining wall pixel 310 can be further increased by covering the gap of the other first-type isolation retaining wall 410 by one of the first-type isolation retaining walls 410, and thus the effect of blocking the lateral leakage flow is ensured on the basis of ensuring the design flexibility of the first-type isolation retaining walls 410.
Optionally, with continuing reference to fig. 10 and 11, along the direction in which the sub-pixel 310 points to the first isolation barrier group 40, the overlapping area between the ith first isolation barrier and the jth first isolation barrier is S1 (not shown), and the area of the ith first isolation barrier is S2 (not shown); wherein S1/S2 is more than or equal to 30 percent.
Specifically, the ratio of the overlapping area S1 between the ith first-type isolation retaining wall and the jth first-type isolation retaining wall to the area S2 of the ith first-type isolation retaining wall is greater than or equal to 30%, that is, by ensuring that two or more isolation retaining walls exist on the minimum 30% of the length of the first-type isolation retaining walls, the isolation effect of the transverse leakage flow can be improved.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, fig. 12 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and as shown in fig. 12, the display device 100 includes the display panel 1 described in any of the embodiments above, so that the display device 100 provided in the embodiment of the present invention has the corresponding beneficial effects in the embodiments above, and details are not repeated here. For example, the display device 100 may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an in-vehicle display device, which is not 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 some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (15)
1. A display panel includes a plurality of sub-pixels;
the display panel also comprises a plurality of groups of first-class isolation baffle wall groups, and at least one side of at least part of the sub-pixels is provided with the first-class isolation baffle wall groups;
the first type of isolation retaining wall group comprises at least one first type of isolation retaining wall, the first type of isolation retaining wall comprises a plurality of retaining wall subsections, and the retaining wall subsections are in a strip shape;
the blocking width of the first type of isolation retaining wall group is greater than the length of any retaining wall subsection in the first type of isolation retaining wall group.
2. The display panel according to claim 1,
there are two said wall sections which extend in intersecting directions.
3. The display panel according to claim 2, wherein the sub-pixel comprises a cathode, the display panel further comprising a cathode signal output terminal, the cathode being electrically connected to the cathode signal output terminal; the direction in which the center of the cathode points to the cathode signal output terminal is a first direction;
the projection length of the first type of isolation retaining wall in the first direction is L1, the projection length in the second direction is L2, and the second direction is orthogonal to the first direction;
wherein L1 > L2.
4. The display panel of claim 3, wherein the first type of isolation wall comprises wall sections extending in parallel with the first direction and wall sections extending in a direction intersecting the first direction.
5. The display panel according to claim 1, wherein the sub-pixels comprise a first sub-pixel, and the turn-on voltage of the first sub-pixel is greater than the turn-on voltages of the other sub-pixels;
at least one side of the first sub-pixel is provided with the first type of isolation barrier group.
6. The display panel according to claim 5, wherein at least a portion of the first-type isolation walls are convex toward a side away from the first sub-pixel.
7. The display panel according to claim 6, wherein the first subpixel comprises an anode;
along the direction that the first sub-pixel points to the first type of isolation retaining wall, the minimum distance between the anode and the same first type of isolation retaining wall is D1, and the maximum distance is D2; wherein (D2-D1)/D1 is less than or equal to 50 percent.
8. The display panel of claim 6, wherein the sub-pixel further comprises a second sub-pixel;
the first isolation retaining wall group comprises a first isolation retaining wall and a second isolation retaining wall which are arranged between the first sub-pixel and the second sub-pixel, the first isolation retaining wall is positioned on one side, close to the first sub-pixel, of the second isolation retaining wall, and the second isolation retaining wall is positioned on one side, close to the second sub-pixel, of the first isolation retaining wall;
the first isolation retaining wall faces away from one side of the first sub-pixel and is convex, and the second isolation retaining wall faces away from one side of the second sub-pixel and is convex.
9. The display panel according to claim 5, wherein a plurality of groups of the first-type partition wall groups are disposed around the first sub-pixel.
10. The display panel of claim 1, wherein the display panel further comprises a plurality of second type of isolation retaining wall groups, and the second type of isolation retaining wall groups comprise at least one second type of isolation retaining wall;
the second type of isolation baffle wall group is arranged between two adjacent first type of isolation baffle wall groups;
the sub-pixel comprises a cathode, cathode current is transmitted in the cathode, the flowing direction of the cathode current is a first direction, and the extending direction of the second type of isolation retaining wall is parallel to the first direction.
11. The display panel of claim 1, wherein a gap is provided between two of said wall sections in the same first type of partition wall.
12. The display panel according to claim 11, wherein the first barrier-wall group comprises at least two first barrier-walls;
along the direction that the sub-pixels point to the first type isolation retaining wall groups, at least two first type isolation retaining walls comprise an ith first type isolation retaining wall and a jth first type isolation retaining wall which are sequentially arranged, wherein i and j are positive integers, and i is not equal to j;
and along the direction that the sub-pixels point to the first type isolation retaining walls, the jth first type isolation retaining wall covers the gaps in the ith first type isolation retaining wall, and/or the ith first type isolation retaining wall covers the gaps in the jth first type isolation retaining wall.
13. The display panel according to claim 12, wherein along a direction in which the sub-pixel points to the first group of isolation barriers, an overlapping area between the ith first-type isolation barrier and the jth first-type isolation barrier is S1, and an area of the ith first-type isolation barrier is S2;
wherein S1/S2 is more than or equal to 30 percent.
14. The display panel of claim 1, wherein the plurality of wall sections comprises a linear wall section; and/or, a plurality of said wall sections comprise curved wall sections.
15. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
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