Display panel and display device

Abstract

The embodiment of the invention discloses a display panel and a display device, an isolation layer is arranged in a display area, the isolation layer comprises a plurality of isolation openings, and light-emitting function layers are located in the isolation openings, so that the isolation layer isolates the light-emitting function layers of adjacent light-emitting devices, and it is ensured that crosstalk does not occur between the light-emitting devices. According to the display panel, the power source wire is arranged in at least part of the non-display area except the first side edge circuit area, that is, the power source wire can not be arranged in the first side edge circuit area, so that the distance between the dam and the display area does not comprise the width of the frame occupied by the power source wire. Therefore, the distance between the dam and the display area can be reduced, the width of the first frame area is reduced, a narrow frame is achieved, and the screen-to-body ratio is increased.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the development of display technology, narrow bezel has become a development trend.

[0003] In the prior art, a frame circuit and a plurality of signal lines are arranged in the frame of a display panel, wherein the frame circuit includes a gate drive circuit, and the signal lines include a cathode power signal line, a clock signal line, etc. The cathode power signal line is arranged around the display area.

[0004] However, it is difficult to achieve narrow bezels in existing display panels, and the screen-to-body ratio is small. Summary of the invention

[0005] The present invention provides a display panel and a display device, so as to reduce the width of at least a portion of a frame of the display panel and improve the screen-to-body ratio.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, comprising: a display area and a non-display area connected to the display area;

[0007] The display panel also includes a substrate;

[0008] A plurality of light-emitting devices, each of which comprises a first electrode, a light-emitting functional layer and a second electrode stacked on a substrate;

[0009] An isolation layer, the isolation layer comprising a plurality of isolation openings, the light-emitting functional layer being located in the isolation openings, and the isolation layer being used to isolate the light-emitting functional layers of adjacent light-emitting devices;

[0010] A thin film encapsulation layer, at least covering each light emitting device, the thin film encapsulation layer at least comprising an organic encapsulation layer;

[0011] The dam is arranged in the non-display area and is located on the same side of the substrate as the isolation layer; the projection of the dam on the substrate surrounds the display area, and the dam is used to block the organic encapsulation layer;

[0012] A power line is electrically connected to the second electrode; the non-display area includes a first frame area, the first frame area includes a first side circuit area between the dam and the display area, and the power line is arranged in the non-display area excluding at least part of the first side circuit area.

[0013] Optionally, the isolation layer includes a pixel defining layer and an isolation structure; the pixel defining layer is disposed on one side of the substrate of the display panel, and the isolation structure is disposed on a side of the pixel defining layer away from the substrate; the isolation structure encloses a first opening, and the pixel defining layer encloses a second opening, and an orthographic projection of the second opening on the substrate is within an orthographic projection of the first opening on the substrate; the isolation opening includes a first opening and a second opening; and the light-emitting functional layer is at least partially located in the second opening;

[0014] Preferably, at least part of the second electrodes of the light-emitting devices overlap with the isolation structure, and the isolation structure is conductive.

[0015] Optionally, the display panel further includes a scan line and a data line, the scan line extends along a first direction, the data line extends along a second direction, and the first direction and the second direction intersect; the non-display area includes two first frame areas opposite to each other along the first direction;

[0016] The non-display area further includes a second frame area, and along the second direction, the second frame area is located at one side of the display area; the power supply line is at least partially arranged in the second frame area;

[0017] Optionally, the second frame area includes a second side circuit area between the dam and the display area, the power supply line is at least partially arranged in the second side circuit area, and the second frame area is also provided with a driving chip for providing a data signal;

[0018] Optionally, the first side circuit area is provided with a gate driving circuit, and the gate driving circuit includes a scanning circuit for generating a scanning signal and / or a light emitting control circuit for generating a light emitting control signal;

[0019] Optionally, the non-display area further includes a third frame area along the second direction and opposite to the second frame area.

[0020] Optionally, in the first border area, the power routing includes a first routing portion disposed between the dam and the substrate; an orthographic projection of the first routing portion on the substrate is covered by an orthographic projection of the dam on the substrate;

[0021] The power wiring also includes a second wiring portion arranged in the second frame area, and the first wiring portion is connected to the second electrode through the second wiring portion.

[0022] Optionally, a distance between an edge of the first wiring portion away from the display area and an edge of the dam away from the display area is greater than 0.

[0023] Optionally, the orthographic projection of the isolation structure on the pixel defining layer is located between adjacent second openings;

[0024] The isolation structure includes a support portion and a barrier portion, wherein the support portion is located between the barrier portion and the pixel defining layer; the orthographic projection of the barrier portion on the pixel defining layer covers the orthographic projection of the support portion on the pixel defining layer; the second electrode of the light-emitting device on at least one side of the isolation structure overlaps the support portion of the isolation structure, and the support portion is conductive;

[0025] Optionally, in the direction of the second opening connection line on both sides of the isolation structure, at the position where the supporting portion and the blocking portion meet, the size of the supporting portion is smaller than the size of the blocking portion.

[0026] Optionally, the thickness of the support portion is greater than the thickness of the second electrode;

[0027] Optionally, the thickness of the support portion is greater than or equal to 5000 angstroms.

[0028] Optionally, in the display area, the orthographic projection of the isolation structure on the substrate coincides with the orthographic projection of the pixel defining layer on the substrate.

[0029] Optionally, the distance between adjacent second openings is greater than or equal to 3 micrometers.

[0030] Optionally, the power supply wiring and the isolation structure are made of the same material and are arranged on the same layer, and are prepared simultaneously using the same process.

[0031] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel of the first aspect.

[0032] The display panel and display device of the embodiment of the present invention, by setting an isolation layer in the display area, the isolation layer includes a plurality of isolation openings, and the light-emitting functional layer is located in the isolation openings, so that the isolation layer isolates the light-emitting functional layers of adjacent light-emitting devices, ensuring that no crosstalk occurs between the light-emitting devices. The power supply line is set in at least part of the non-display area except the first side circuit area, that is, the power supply line may not be set in the first side circuit area, so the distance between the dam and the display area does not include the width of the frame occupied by the power supply line. Compared with the display panel of the prior art, the distance between the dam and the display area can be reduced, thereby reducing the width of the first frame area, which is conducive to the realization of a narrow frame and improves the screen-to-body ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of a frame structure on one side of a display panel in the related art;

[0034] Figure 2 is a top view of a display panel provided by an embodiment of the present invention;

[0035] Figure 3 is a cross-sectional view of a display panel provided by an embodiment of the present invention;

[0036] Figure 4is a cross-sectional view of another display panel provided by an embodiment of the present invention;

[0037] Figure 5 is a cross-sectional view of another display panel provided by an embodiment of the present invention;

[0038] Figure 6 is a cross-sectional view of another display panel provided by an embodiment of the present invention;

[0039] Figure 7 is a top view of another display panel provided by an embodiment of the present invention;

[0040] Figure 8 is an enlarged view of the isolation structure provided by an embodiment of the present invention;

[0041] Fig. 9 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] As described in the background technology, it is difficult to achieve narrow borders in existing display panels, and the screen ratio is small. The inventors have found that the reason for the above problems is that the existing display panel includes a plurality of light-emitting devices, wherein the light-emitting device includes a stacked anode, a light-emitting layer and a cathode, wherein the cathodes of each light-emitting device are connected to each other to form a cathode layer, and the cathode layer is a whole-surface structure. When making the display panel, after the light-emitting layer is formed, the cathode layer is laid on the whole surface of one side of the light-emitting layer. In the existing display panel, in order to ensure the display effect of the display panel, the cathode needs to be transparent, so the thickness of the cathode layer is relatively thin, generally about 100 angstroms, so that the square resistance of the cathode layer is relatively large. Accordingly, when the cathode voltage is transmitted in the cathode layer, the voltage drop will be relatively large. In order to alleviate the voltage drop of the cathode voltage, a cathode power supply line surrounding the display area is usually set in the non-display area, and the cathode power supply line can be connected to the cathode layer at multiple positions around the display area. For example, for a rectangular display panel, the cathode power supply line is connected to the cathode layer at the upper, lower, left and right frames of the display panel. Figure 1 is a schematic diagram of a frame structure of a display panel on one side in the related art, and the frame width of the display panel is equal to the distance between the dam and the display area ( Figure 1 The first distance c), the width of the border occupied by the dam ( Figure 1 The second distance b) and the distance between the dam and the edge of the display panel ( Figure 1The sum of the third distance c). The distance between the dam and the display area ( Figure 1 The first distance c) includes the width of the frame occupied by the cathode power supply line ( Figure 1 The first width c1) and the border width occupied by the border circuit ( Figure 1 The second width c2), wherein the frame short circuit may include a gate drive circuit. Therefore, the cathode power supply line is set as above, so that the cathode power supply line needs to occupy each frame of the display panel, which is not conducive to the realization of a narrow frame.

[0044] Based on the above reasons, an embodiment of the present invention provides a display panel. Figure 2 is a top view of a display panel provided by an embodiment of the present invention, Figure 3 is a cross-sectional view of a display panel provided by an embodiment of the present invention, Figure 4 is a cross-sectional view of another display panel provided by an embodiment of the present invention, Figure 3 Can correspond Figure 2 Cut along the section line BB' to obtain: Figure 4 Can correspond Figure 2 Cut along the section line CC', reference Figure 2-Figure 4 The display panel includes: a display area AA and a non-display area NAA connected to the display area AA; the display panel also includes a substrate 100; a plurality of light-emitting devices 300, the light-emitting device 300 includes a first electrode 310, a light-emitting functional layer 320 and a second electrode 330 stacked on the substrate 100; an isolation layer 20, the isolation layer 20 includes a plurality of isolation openings 201, the light-emitting functional layer 320 is located in the isolation openings 201, and the isolation layer 20 is used to isolate the light-emitting functional layer 320 of adjacent light-emitting devices 300; a thin film encapsulation layer 500, at least covering each light-emitting device 300, the thin film encapsulation layer 500 at least including an organic encapsulation layer 510; a dam 600, arranged in the non-display area N AA, and is located on the same side of the substrate 100 as the isolation layer 20; the projection of the dam 600 on the substrate surrounds the display area AA, and the dam 600 is used to block the organic encapsulation layer 510; a power supply line 700, and the power supply line 700 is electrically connected to the second electrode 330; the non-display area NAA includes a first border area NAA1, and the first border area NAA1 includes a first side circuit area NAA11 between the dam 600 and the display area AA, and the power supply line 700 is arranged in the non-display area NAA excluding at least a part of the first side circuit area NAA11 (that is, the power supply line 700 is arranged in the non-display area NAA, and the power supply line 700 is not arranged in the first side circuit area NAA11).

[0045] Specifically, the substrate 100 can provide buffering, protection or support for the display device. The substrate 100 can be a flexible substrate, and the material of the flexible substrate 100 can be polyimide (PI), polyethylene naphthalate (PEN) or polyethylene terephthalate (PET), etc., or a mixture of the above materials. The substrate 100 can also be a hard substrate formed of materials such as glass.

[0046] In some optional embodiments of the present invention, the isolation layer 10 includes a pixel defining layer 200 and an isolation structure 400; the pixel defining layer 200 is arranged on one side of the substrate 100 of the display panel, and the isolation structure 400 is arranged on the side of the pixel defining layer 200 away from the substrate 100; the isolation structure 400 encloses a first opening 401, and the pixel defining layer 200 encloses a second opening 210, and the orthographic projection of the second opening 210 on the substrate 100 is within the orthographic projection of the first opening 401 on the substrate 100; the isolation opening 201 includes the first opening 401 and the second opening 210; the light-emitting functional layer 320 is at least partially located within the second opening 210.

[0047] The orthographic projection of the second opening 210 on the substrate 100 is within the orthographic projection of the first opening 401 on the substrate 100, including the case where the orthographic projection of the second opening 210 on the substrate 100 completely overlaps with the orthographic projection of the first opening 401 on the substrate 100, and also including the case where the orthographic projection of the second opening 210 on the substrate 100 partially overlaps with the orthographic projection of the first opening 401 on the substrate 100, and the orthographic projection of the second opening 210 on the substrate 100 is completely within the orthographic projection of the first opening 401 on the substrate 100.

[0048] The pixel defining layer 200 includes a plurality of second openings 210, in each of which a light-emitting functional layer 320 of a light-emitting device 300 is disposed. The pixel defining layer 200 may be made of organic materials such as acrylic organic compounds, polyamide, or polyimide, or inorganic materials such as silicon oxide, silicon nitride, silicon oxynitride, or aluminum oxide, which are not specifically limited in the embodiments of the present invention.

[0049] The light-emitting device 300 includes a first electrode 310, a light-emitting functional layer 320 and a second electrode 330 stacked on the substrate 100. Optionally, the first electrode 310 is the anode of the light-emitting device 300, and the second electrode 330 is the cathode of the light-emitting device 300. The anode can adopt a three-layer structure, wherein the first layer and the third layer can be metal oxide layers, such as indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), and the middle second layer can be a metal layer (such as silver or copper). The first electrode 310 is connected to the pixel circuit, and then receives a driving signal from the pixel circuit. The cathode can be an ITO transparent electrode or a magnesium-silver alloy. The light-emitting functional layer 320 can include only a single film layer, that is, only a light-emitting material layer; it can also include a multi-layer structure formed by a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, an electron injection layer, etc. stacked from the substrate 110 side. In addition, the light-emitting functional layer 320 includes at least a red light-emitting layer, a green light-emitting layer and a blue light-emitting layer, thereby realizing a display of multiple colors.

[0050] The isolation structure 400 is located in the display area AA, and the light-emitting functional layer 320 of the light-emitting device 300 is separated by the isolation structure 400, thereby avoiding color crosstalk between different light-emitting devices 300. The isolation structure 400 has a certain thickness. Specifically, the thickness of the isolation structure 400 is greater than the thickness of the cathode. Exemplarily, when preparing the display panel, after the isolation structure 400 is prepared, the light-emitting layer can be evaporated using the isolation structure 400 as a mask, and then the light-emitting functional layer 320 of the adjacent light-emitting device 300 can be separated at the isolation structure 400 through the isolation structure 400. The light-emitting functional layer 320 can be non-contact with the isolation structure 400, thereby avoiding color crosstalk between adjacent light-emitting devices 300 when the light-emitting colors are different. In addition, the use of a precision mask for evaporating the light-emitting functional layer 320 in the prior art can be saved. When preparing the cathode on the light-emitting functional layer 320, for example, when a universal mask is used to evaporate the cathode, due to the existence of the isolation structure 400, the cathode is divided into a plurality of independent cathodes corresponding to the light-emitting device 300, wherein the preparation process of the cathode is not limited to the evaporation process described above, and a sputtering process or other processes may also be used, which is not specifically limited in this embodiment. It should be noted that when both the light-emitting functional layer 320 and the cathode 330 are prepared by the evaporation process, the light-emitting functional layer 320 and the isolation structure 400 may be non-contacted, and the cathode 300 and the isolation structure 400 may be in contact to achieve overlap between the two by adjusting the different evaporation angles.

[0051] Continue to refer Figure 3 and Figure 4The display panel further includes a thin film encapsulation layer 500. Optionally, the thin film encapsulation layer 500 includes a first inorganic encapsulation layer 520, an organic encapsulation layer 510, and a second inorganic encapsulation layer 530 stacked to ensure a better encapsulation effect. The thin film encapsulation layer 500 at least covers each light-emitting device 300. The thin film encapsulation layer 500 may also cover at least part of the circuit structure and signal lines in the non-display area NAA to encapsulate the light-emitting devices 300 and the circuit structure in the display panel, and prevent the light-emitting devices 300 and the circuit devices from being corroded by water, oxygen, etc., thereby ensuring that the display panel has a longer service life.

[0052] The material of the organic encapsulation layer 510 is an organic material, and the organic material has fluidity. In order to block the organic encapsulation layer 510, the display panel further includes a dam 600, which is arranged in the non-display area NAA. The projection of the dam 600 on the substrate surrounds the display area AA. The dam 600 is used to block the organic encapsulation layer 510. The dam 600 and the pixel defining layer 200 are located on the same side of the substrate 100. Optionally, the portion of the pixel defining layer 200 in the non-display area NAA can at least partially serve as the structure of the dam 600.

[0053] refer to Figure 4 The display panel further includes a power supply line 700, which is electrically connected to the isolation structure 400 and the second electrode 330, wherein the power supply line 700 can be connected to the second electrode 330 through the isolation structure 400, or can be connected to the isolation structure 400 through the second electrode 330. The power supply line 700 can be connected to a power supply that outputs a voltage required by the second electrode 330, and then transmits the voltage output by the power supply to the second electrode 330. Figure 2-Figure 4 In this embodiment, the non-display area NAA includes a first frame area NAA1, the first frame area NAA1 includes a first side circuit area NAA11 between the dam 600 and the display area AA, the power line 700 is arranged in the non-display area NAA, and the power line 700 is arranged in at least a part of the area except the first side circuit area NAA11. The display panel may include a plurality of frame areas, the plurality of frame areas may include at least one first frame area NAA1, and the plurality of frame areas may also include other frame areas except the first frame area NAA1, wherein Figure 2 and Figure 4Schematically shows a case where the display panel further includes a second border area NAA2, and the power supply line 700 is located in the second border area NAA2 of the display panel, wherein the second border area NAA2 is a border area in the display panel that is different from the first border area NAA1. In some optional embodiments, there is a partial overlap between the first border area NAA1 and the second border area NAA2. For example, both the first border area NAA1 and the second border area NAA2 include the lower left corner area and the lower right corner area of ​​the display panel. In this case, there is a partial overlap between the first border area NAA1 and the second border area NAA2. In another part of the optional embodiments, there is no overlap between the first border area NAA1 and the second border area NAA2. For example, one of the first border area NAA1 and the second border area NAA2 includes the lower left corner area and the lower right corner area of ​​the display panel, and the other does not include the lower left corner area and the lower right corner area of ​​the display panel. In this case, there is no overlap between the first border area NAA1 and the second border area NAA2. However, regardless of whether the first border area NAA1 overlaps with the second border area NAA2 , the first border area NAA1 and the second border area NAA2 are different border areas.

[0054] Continue to refer Figure 3 Optionally, the first side circuit area NAA11 is provided with a gate driving circuit 800, and the gate driving circuit 800 includes a scanning circuit for generating a scanning signal and / or a light emitting control circuit for generating a light emitting control signal.

[0055] The output end of the scanning circuit is connected to the scanning line S0, and the scanning circuit can output a scanning signal to the scanning line S0. The display panel may also include a light-emitting control signal line, and the output end of the light-emitting control circuit is connected to the light-emitting control signal line, and the light-emitting control circuit can output a light-emitting control signal to the light-emitting control signal line. The display panel includes a pixel circuit for driving the light-emitting device 300 to emit light, and the pixel circuit is respectively connected to the scanning line S0 and the light-emitting control signal line, and drives the light-emitting device 300 according to the scanning signal transmitted by the scanning line S0 and the light-emitting control signal transmitted by the light-emitting control signal line.

[0056] Figure 3 The frame width w1 of the display panel corresponding to the first frame area NAA1 is equal to the distance between the dam 600 and the display area AA ( Figure 3 The first distance c), the width of the frame occupied by the dam 600 ( Figure 3 The second distance b) and the distance between the dam 600 and the edge of the display panel ( Figure 3 The sum of the third distance a). Combined Figure 3 and Figure 4In this embodiment, the power line 700 is disposed in the non-display area NAA, except for at least a portion of the first side circuit area NAA11, that is, the power line 700 is not disposed in the first side circuit area NAA11, so the distance between the dam 600 and the display area AA is ( Figure 3 The first distance c) does not include the width of the border occupied by the power line 700. When the gate drive circuit 800 is provided in the first side circuit area NAA11, the first side circuit area NAA1 includes the border width occupied by the gate drive circuit 800, but does not include the border width occupied by the power line 700; compared to Figure 1 The distance between the dam 600 and the display area AA ( Figure 1 The first distance c) includes the width of the frame occupied by the cathode power supply line ( Figure 1 The first width c1) and the border width occupied by the border circuit (which can be a gate drive circuit) ( Figure 1 The display panel with a first width c2) can reduce the distance between the dam 600 and the display area AA, thereby reducing the width of the first border area NAA1, which is conducive to the realization of a narrow border.

[0057] In this embodiment, since the isolation structure 400 is provided in the display area AA, the isolation structure 400 is optionally overlapped with the second electrode 330 of at least part of the light-emitting devices 300 in the display panel. The second electrodes 330 of the light-emitting devices 300 in the display panel can be connected to each other through the isolation structure 400. The display panel may also include a conductive connection layer different from the layer where the isolation structure 400 is located, and the conductive connection layer connects the second electrodes 330 of the light-emitting devices 300. By selecting a material with a lower resistivity than the second electrode 330 as the material of the isolation structure 400 (or the conductive connection layer), and / or making the thickness of the isolation structure 400 (or the conductive connection layer) thicker, the overall structure of the second electrode 330 connected to the isolation structure 400 (or the conductive connection layer) can be made smaller in resistance than the entire cathode layer in the prior art, so that the voltage drop when the voltage required by the second electrode 330 in the display area AA is transmitted is smaller. In this embodiment, the power lines 700 may be reduced in the non-display area NAA. Specifically, the power lines 700 may no longer be arranged in the side circuit area of ​​the first border area NAA1, thereby facilitating the realization of a narrow border.

[0058] The display panel of this embodiment is provided with an isolation layer in the display area, the isolation layer includes a plurality of isolation openings, and the light-emitting functional layer is located in the isolation openings, so that the isolation layer isolates the light-emitting functional layers of adjacent light-emitting devices, thereby ensuring that no crosstalk occurs between the light-emitting devices. The power supply line is provided in at least part of the non-display area except the first side circuit area, that is, the power supply line may not be provided in the first side circuit area, so the distance between the dam and the display area does not include the width of the frame occupied by the power supply line. Compared with the display panel of the prior art, the distance between the dam and the display area can be reduced, thereby reducing the width of the first frame area, thereby facilitating the realization of a narrow frame and improving the screen-to-body ratio.

[0059] Continue to refer Figure 2-Figure 4 On the basis of the above technical solution, the display panel also includes a scan line S0 and a data line D0, the scan line S0 extends along a first direction x1, the data line D0 extends along a second direction y1, and the first direction x1 and the second direction y1 intersect; the non-display area NAA includes two first border areas NAA1 opposite to each other along the first direction x1; the non-display area NAA also includes a second border area NAA2, and along the second direction y1, the second border area NAA2 is located on one side of the display area AA; the power line 700 is at least partially arranged in the second border area NAA2.

[0060] Specifically, the display panel is Figure 2 In the case of the rectangular display panel shown, the two first border areas NAA1 of the display panel are respectively the left border and the right border of the display panel, and the second border area NAA2 of the display panel is the bottom border of the display panel. The non-display area NAA also includes a third border area NAA3 along the second direction y1, which is opposite to the second border area NAA2, and the third border area NAA3 of the display panel is the upper border of the display panel. In the present embodiment, in the first side circuit area NAA11 of the two first border areas NAA1 opposite to each other along the first direction x1 of the display panel, no power line 700 is provided, so that the widths of the two first border areas NAA1 opposite to each other along the first direction x1 are both narrower, which is more conducive to the realization of a narrow border, and the widths of the two first border areas NAA1 can be made more consistent more easily, thereby ensuring the aesthetics of the display panel and improving the user viewing experience.

[0061] Optionally, the second border area NAA2 includes a second side circuit area NAA21 between the dam 600 and the display area AA, and the power line 700 is at least partially arranged in the second side circuit area NAA21; the second border area NAA2 is provided with a driving chip for providing data signals (not shown in the figure).

[0062] Specifically, the second border area NAA2 itself needs to be provided with a driver chip to output a data signal to the data line D0, so the second border area NAA2 itself has a certain width. Among them, the voltage required for the second electrode 330 can be provided by the driver chip. In this case, the power line 700 is set in the second side circuit area NAA21, which can conveniently lead the voltage required for the second electrode 330 output by the driver chip to the isolation structure 400 and the second electrode 330 in the display area AA, and the length of the power line 700 does not need to be set too long, which is further conducive to the realization of a narrow border. The voltage required for the second electrode 330 can also be provided by an additional power supply, which is usually arranged in the same border area as the driving chip (i.e., the second border area NAA2) or bent to the backlight side of the display panel. In this case, the power line 700 is set in the second side circuit area NAA21, which can also facilitate the voltage required for the second electrode 330 output by the driving chip to the isolation structure 400 and the second electrode 330 in the display area AA, and the length of the power line 700 does not need to be set too long, which is further conducive to the realization of a narrow border.

[0063] It should be noted that in some optional embodiments of the present invention, the power lines 700 can be entirely disposed in the second border area NAA2, so that the widths of the border areas except the second border area NAA2 can be reduced, so that the display panel can achieve a narrow border.

[0064] In another optional embodiment of the present invention, the power supply line may be partially disposed in the second border area NAA2 and partially disposed in other border areas.

[0065] Figure 5 is a cross-sectional view of another display panel provided by an embodiment of the present invention, Figure 5 Can correspond Figure 2 Cut along the section line BB' and combine Figure 2 , Figure 4 and Figure 5 Optionally, in the first border area NAA1, the power wiring 700 includes a first wiring portion 710 disposed between the dam 600 and the substrate 100, and the orthographic projection of the first wiring portion 710 on the substrate 100 is covered by the orthographic projection of the dam 600 on the substrate 100;

[0066] The power wiring 700 further includes a second wiring portion 720 disposed in the second border area NAA2, and the first wiring portion 710 is connected to the second electrode 330 via the second wiring portion 720. Optionally, the first wiring portion 710 is connected to the isolation structure 400 and the second electrode 330 via the second wiring portion 720.

[0067] Specifically, since the setting of the dam 600 itself needs to occupy the frame, in this embodiment, the first routing portion 710 of the power routing 700 is set between the dam 600 and the substrate 100, and the orthographic projection of the first routing portion 710 on the substrate 100 is covered by the orthographic projection of the dam 600 on the substrate 100, so that the first routing portion 710 does not occupy the frame of the display panel additionally relative to the dam 600. On the one hand, the power routing 700 can be set in the first frame area NAA1, which is beneficial to alleviate the voltage drop during the transmission of the voltage required by the second electrode 330; on the other hand, the width of the first frame area NAA1 can be made narrower, which is beneficial to the realization of a narrow frame.

[0068] Continue to refer Figure 5 Optionally, the distance between the edge of the first wiring portion 710 away from the display area AA and the edge of the dam 600 away from the display area AA is ( Figure 5 The fourth distance d) is greater than 0.

[0069] Specifically, the dam 600 is provided so that the thin film encapsulation layer 500 forms an undulating curved surface shape at the position of the dam 600, which can extend the invasion path of water, oxygen, etc., and the dam 600 itself can also play a role in blocking water and oxygen. The orthographic projection of the first wiring portion 710 on the substrate 100 is covered by the orthographic projection of the dam 600 on the substrate 100, and the distance between the edge of the first wiring portion 710 away from the display area AA and the edge of the dam 600 away from the display area AA is greater than 0, so that the first wiring portion 710 will not extend beyond the dam 600, so that the first wiring portion 710 is not easily corroded by water, oxygen, etc., thereby ensuring the signal transmission performance of the first wiring portion 710 and ensuring a good display effect of the display panel.

[0070] refer to Figure 4 and Figure 5 In some optional embodiments of the present invention, the power supply line 700 is made of the same material and layer as the conductive structure in the display panel, and is prepared by the same process, thereby saving the preparation process. For example, the power supply line 700 can be made of the same material and layer as the source and drain of the transistor included in the pixel circuit in the display panel, and is prepared by the same process. Figure 5 As shown, the power wiring 700 and the isolation structure 400 may be connected through a first connection structure L1 in the non-display area NAA and in the same layer as the first electrode 210 , and a second connection structure L2 in the same layer as the isolation structure 400 .

[0071] Figure 6 is a cross-sectional view of another display panel provided by an embodiment of the present invention, Figure 6 Can correspond Figure 2Cutting along the section line CC' shows that in another optional embodiment of the present invention, the power line 700 and the isolation structure 400 are made of the same material and are arranged on the same layer, and are prepared simultaneously using the same process; thereby, the preparation steps can be saved, so that the preparation process of the display panel is relatively simple, and the connection between the power line 700 and the isolation structure 400 does not need to be bridged by other connection structures, and the connection between the two is easier to achieve.

[0072] Figure 7 is a top view of another display panel provided by an embodiment of the present invention, and further reference is made to Figure 3-Figure 7 , Optionally, the orthographic projection of the isolation structure 400 on the pixel defining layer 200 is located between adjacent second openings 210 ;

[0073] The isolation structure 400 includes a supporting portion 410 and a blocking portion 420, wherein the supporting portion 410 is located between the blocking portion 420 and the pixel defining layer 200; the orthographic projection of the blocking portion 420 on the pixel defining layer 200 covers the orthographic projection of the supporting portion 410 on the pixel defining layer 200; the second electrode 330 of the light-emitting device 300 on at least one side of the isolation structure 400 overlaps with the supporting portion 410 of the isolation structure 400, and the supporting portion 410 is conductive.

[0074] The material of the support portion 410 may be a conductive material, and the second electrodes 330 of adjacent light-emitting devices 300 are all connected to the support portion 410, so that the second electrodes 330 of adjacent light-emitting devices 300 are electrically connected through the support portion 410. The material of the support portion 410 may be aluminum and / or copper. The material of the barrier portion 420 may include a conductive material and / or an insulating material, for example, the material of the barrier portion 420 includes titanium, silicon nitride, or silicon oxide.

[0075] Figure 8 is an enlarged view of the isolation structure provided by an embodiment of the present invention, combined with Figure 3-Figure 8 Optionally, in the connecting line direction z1 of the second openings 210 on both sides of the isolation structure 400 , at the position where the supporting portion 410 and the blocking portion 420 meet, the size r1 of the supporting portion 410 is smaller than the size r2 of the blocking portion 420 .

[0076] Specifically, in the connecting direction z1 of the second openings 210 on both sides of the isolation structure 400, at the position where the support portion 410 and the blocking portion 420 are connected, the size r1 of the support portion 410 is smaller than the size r2 of the blocking portion 420, so that an undercut structure is formed on the side of the isolation structure 400, and then when the light-emitting layer of the light-emitting device 300 in the display panel is evaporated, the light-emitting layer of the adjacent light-emitting device 300 can be cut off at the position of the isolation structure 400. In addition, the second electrode 330 of the light-emitting device 300 can also be formed by an evaporation process, and by controlling different evaporation angles when evaporating the second electrode 330 and the light-emitting layer, the second electrode 330 can be connected to the support portion 410 of the isolation structure 400, and then the second electrodes 330 of each light-emitting device 300 in the display panel can be connected to each other through the isolation structure 400.

[0077] It should be noted that in this embodiment, the shape of the isolation structure 400 is not limited to Figure 8 The shape shown can also block the light-emitting functional layer of the light-emitting device 300 , and the size of the supporting part 410 is smaller than the size of the blocking part 420 at the position where the supporting part 410 and the blocking part 420 meet.

[0078] Continue to refer Figure 3-Figure 6 On the basis of the above embodiments, optionally, the thickness h1 of the support portion 410 is greater than the thickness of the second electrode 330; when the light-emitting functional layer 320 and the second electrode 330 are prepared, the light-emitting functional layer 320 of the adjacent light-emitting device 300 can be more easily isolated by the isolation structure 400, and the second electrode 330 of the adjacent light-emitting device 300 can also be more easily isolated by the isolation structure 400, which is more conducive to avoiding cross-color of the adjacent light-emitting devices 300. In addition, the thicker the thickness of the support portion 410 is, the smaller the square resistance of the isolation structure 400 is, and the smaller the transmission voltage drop of the voltage required by the second electrode 330 in the display area AA.

[0079] Optionally, the thickness of the support portion 410 is greater than or equal to 5000 angstroms; illustratively, the thickness of the support portion 410 may be equal to 5000 angstroms, 5500 angstroms, or 6000 angstroms. The thickness of the support portion 410 is greater than or equal to 5000 angstroms, so that the support portion 410 has a relatively thick thickness, thereby ensuring that the support portion 410 can separate the light-emitting functional layer 320 and ensure that the support portion 410 has a relatively small square resistance.

[0080] In some optional embodiments of the present invention, the thickness of the support portion 410 is less than or equal to 8000 angstroms. This ensures that the support portion 410 has a partitioning effect on the light-emitting functional layer 320 and a smaller square resistance, while also preventing the thickness of the display panel from being significantly increased due to the provision of the isolation structure 400, thereby ensuring that the display panel is light and thin.

[0081] Continue to refer Figure 3-Figure 7 Optionally, in the display area AA, the orthographic projection of the isolation structure 400 on the substrate 100 coincides with the orthographic projection of the pixel defining layer 200 on the substrate 100. Accordingly, the orthographic projection of the first opening 401 on the substrate 100 and the orthographic projection of the second opening 210 on the substrate 100 completely overlap.

[0082] The orthographic projection of the isolation structure 400 on the substrate 100 coincides with the orthographic projection of the pixel defining layer 200 on the substrate 100, that is, except for the area corresponding to the second opening 210 of the pixel defining layer 200, the isolation structure 400 is correspondingly arranged in other areas. Such arrangement, on the one hand, can ensure that the isolation structure 400 has a larger cross-sectional area, so that the resistance of the isolation structure 400 is smaller, and then the resistance of the overall structure connecting the isolation structure 400 and the second electrode 330 is smaller, so that the transmission voltage drop of the voltage required by the second electrode 330 is smaller; on the other hand, when the light-emitting functional layer 320 is evaporated, the light-emitting functional layer 320 is separated by the isolation structure 400 and is confined within the second opening 210 of the pixel defining layer 200, so as to ensure the performance of the light-emitting device 300.

[0083] Continue to refer Figure 7 Optionally, the distance m1 between adjacent second openings 210 is greater than or equal to 3 micrometers.

[0084] Specifically, the distance m1 between adjacent second openings 210 is greater than or equal to 3 microns, which can make the cross-sectional area of ​​the isolation structure 400 on the side of the pixel defining layer 200 away from the substrate 100 larger, so that the resistance of the isolation structure 400 is smaller, and thus the resistance of the overall structure connecting the isolation structure 400 and the second electrode 330 is smaller, so that the transmission voltage drop of the voltage required by the second electrode 330 is smaller; and thus the setting of the power line 700 in the non-display area NAA can be reduced, which is conducive to the realization of a narrow frame.

[0085] An embodiment of the present invention further provides a display device, Fig. 9 is a schematic diagram of a display device provided by an embodiment of the present invention, with reference to Fig. 9 The display device 1 provided in the embodiment of the present invention includes the display panel 11 provided in any of the above embodiments of the present invention. The display device can be Fig. 9 The mobile phone shown may also be a computer, a television, a smart wearable display device, etc., and the embodiments of the present invention do not specifically limit this.

[0086] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: A display area and a non-display area connected to the display area; The display panel further comprises a substrate; a plurality of light emitting devices, wherein the light emitting devices comprise a first electrode, a light emitting functional layer and a second electrode stacked on the substrate; An isolation layer, the isolation layer comprising a plurality of isolation openings, the light-emitting functional layer being located in the isolation openings, and the isolation layer being used to isolate the light-emitting functional layer of the adjacent light-emitting device; A thin film encapsulation layer, at least covering each of the light-emitting devices, the thin film encapsulation layer at least comprising an organic encapsulation layer; A dam is provided in the non-display area and is located on the same side of the substrate as the isolation layer; the projection of the dam on the substrate surrounds the display area, and the dam is used to block the organic encapsulation layer; A power line is electrically connected to the second electrode; the non-display area includes a first border area, the first border area includes a first side circuit area between the dam and the display area, and the power line is arranged in the non-display area excluding at least a portion of the first side circuit area.

2. The display panel according to claim 1, characterized in that: The isolation layer includes a pixel defining layer and an isolation structure; The pixel defining layer is disposed on one side of the substrate of the display panel, and the isolation structure is disposed on a side of the pixel defining layer away from the substrate; The isolation structure encloses a first opening, the pixel defining layer encloses a second opening, the orthographic projection of the second opening on the substrate is within the orthographic projection of the first opening on the substrate; the isolation opening includes the first opening and the second opening; the light-emitting functional layer is at least partially located within the second opening; Preferably, at least a portion of the second electrodes of the light-emitting device overlaps with the isolation structure, and the isolation structure is conductive.

3. The display panel according to claim 1 or 2, characterized in that: It also includes a scan line and a data line, wherein the scan line extends along a first direction, the data line extends along a second direction, and the first direction and the second direction intersect; the non-display area includes two first frame areas opposite to each other along the first direction; The non-display area further includes a second border area, and along the second direction, the second border area is located at one side of the display area; the power line is at least partially disposed in the second border area; Preferably, the second border area includes a second side circuit area between the dam and the display area, the power supply line is at least partially arranged in the second side circuit area, and the second border area is also provided with a driving chip for providing a data signal; Preferably, the first side circuit area is provided with a gate driving circuit, and the gate driving circuit includes a scanning circuit for generating a scanning signal and / or a light emitting control circuit for generating a light emitting control signal; Preferably, the non-display area further includes a third frame area along the second direction and opposite to the second frame area.

4. The display panel according to claim 3, characterized in that: In the first border area, the power routing includes a first routing portion disposed between the dam and the substrate; an orthographic projection of the first routing portion on the substrate is covered by an orthographic projection of the dam on the substrate; The power wiring further includes a second wiring portion disposed in the second border area, and the first wiring portion is connected to the second electrode through the second wiring portion.

5. The display panel according to claim 4, characterized in that: A distance between an edge of the first wiring portion away from the display area and an edge of the dam away from the display area is greater than zero.

6. The display panel according to claim 2, characterized in that: The orthographic projection of the isolation structure on the pixel defining layer is located between adjacent second openings; The isolation structure comprises a supporting portion and a blocking portion, wherein the supporting portion is located between the blocking portion and the pixel defining layer; The orthographic projection of the blocking portion on the pixel defining layer covers the orthographic projection of the supporting portion on the pixel defining layer; The second electrode of the light emitting device on at least one side of the isolation structure overlaps with the support portion of the isolation structure, and the support portion is conductive; Preferably, in the direction of the second openings on both sides of the isolation structure, at the position where the support portion and the blocking portion meet, the size of the support portion is smaller than the size of the blocking portion.

7. The display panel according to claim 6, characterized in that: The thickness of the support portion is greater than the thickness of the second electrode; Preferably, the thickness of the support portion is greater than or equal to 5000 angstroms.

8. The display panel according to claim 2, characterized in that: In the display area, the orthographic projection of the isolation structure on the substrate coincides with the orthographic projection of the pixel defining layer on the substrate; preferably, the distance between adjacent second openings is greater than or equal to 3 micrometers.

9. The display panel according to claim 2, characterized in that: The power supply wiring is made of the same material and layer as the isolation structure, and is manufactured simultaneously using the same process.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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