Display panel and display device

Abstract

The invention discloses a display panel and a display device, relates to the technical field of display, and can improve the display uniformity of the display panel and improve the display effect. A display panel includes: a substrate layer; the driving layer is arranged on one side of the substrate layer, the driving layer is provided with a plurality of pixel circuits, and each pixel circuit comprises a driving unit; the light-emitting device layer is arranged on the side, away from the substrate layer, of the driving layer, and the light-emitting device layer is provided with a plurality of light-emitting devices; the driving unit is electrically connected with the series unit, the series unit comprises at least two light-emitting devices which are connected in series, and the driving unit is electrically connected with a cathode of one light-emitting device of the series unit.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] At present, with the continuous development of display technology, the uniformity requirements of display characteristics of display products are getting higher and higher. Usually, the driving unit of the pixel circuit is connected to the anode of the light-emitting device, and the cathode of the light-emitting device is driven by the power signal. The potential of the driving unit will be affected by the cross-voltage between the anode and cathode of the light-emitting device, thereby affecting the light-emitting performance of the light-emitting device. The performance difference of the light-emitting device will affect the display uniformity of the display product and affect the display effect of the display product. Summary of the invention

[0004] The embodiments of the present disclosure provide a display panel and a display device, which can improve the display uniformity of the display panel and improve the display effect.

[0005] A first aspect of the present disclosure provides a display panel, comprising:

[0006] substrate layer;

[0007] A driving layer, disposed on one side of the substrate layer, wherein the driving layer is provided with a plurality of pixel circuits, and the pixel circuits include a driving unit;

[0008] A light emitting device layer, arranged on a side of the driving layer away from the substrate layer, wherein the light emitting device layer is provided with a plurality of light emitting devices;

[0009] The driving unit is electrically connected to a series unit, wherein the series unit includes at least two light-emitting devices connected in series, and the driving unit is electrically connected to a cathode of one of the light-emitting devices in the series unit.

[0010] In some embodiments, the light-emitting devices of the series-connected units are used to emit light of the same color.

[0011] In some embodiments, the driving unit includes a driving transistor, the driving transistor includes a source and a drain, the drain of the driving transistor is electrically connected to the cathode of one of the light-emitting devices of the series unit, and the source of the driving transistor is electrically connected to the cathode signal line;

[0012] An anode of another light emitting device in the series unit is electrically connected to an anode signal line.

[0013] In some embodiments, the series unit includes a first sub-light emitting device and a second sub-light emitting device, and a cathode of the first sub-light emitting device is electrically connected to an anode of the second sub-light emitting device;

[0014] The cathode of the second sub-light emitting device is electrically connected to the drain of the driving unit, and the anode of the first sub-light emitting device is electrically connected to the anode signal line.

[0015] In some embodiments, the light emitting regions of the plurality of light emitting devices in the series unit have the same area.

[0016] In some embodiments, the series unit includes a first sub-light emitting device and a second sub-light emitting device, and light emitting areas of different series units do not overlap;

[0017] The light emitting device comprises an anode, a light emitting layer and a cathode, wherein the light emitting layer is arranged on a side of the anode away from the substrate layer, and the cathode is arranged on a side of the light emitting layer away from the anode;

[0018] The light-emitting device layer comprises a pixel defining layer, the pixel defining layer is provided with a plurality of pixel openings, and the orthographic projections of the anode, the cathode and the light-emitting layer on the substrate layer all cover the orthographic projections of the pixel openings on the substrate layer;

[0019] The pixel defining layer is provided with a plurality of first openings and a plurality of second openings, the cathode of the first sub-light-emitting device is connected to the anode of the second sub-light-emitting device through the first opening, the anode of the first sub-light-emitting device is electrically connected to the anode signal line, and the cathode of the second sub-light-emitting device is connected to the driving unit through the second opening.

[0020] In some embodiments, the first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening;

[0021] The orthographic projection area of ​​the first sub-pixel opening on the substrate layer is the same as the orthographic projection area of ​​the second sub-pixel opening on the substrate layer.

[0022] In some embodiments, the first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening;

[0023] The first direction intersects the second direction;

[0024] in,

[0025] In the first direction, the size of the first sub-pixel opening is smaller than the size of the second sub-pixel opening;

[0026] In the second direction, the size of the first sub-pixel opening is larger than the size of the second sub-pixel opening;

[0027] In the first direction, the first openings and the first sub-pixel openings are arranged alternately;

[0028] In the second direction, the first openings and the second sub-pixel openings are arranged alternately;

[0029] and / or,

[0030] In the first direction, the size of the first sub-pixel opening is larger than the size of the second sub-pixel opening;

[0031] In the second direction, the size of the first sub-pixel opening is smaller than the size of the second sub-pixel opening;

[0032] In the first direction, the first openings and the second sub-pixel openings are arranged alternately;

[0033] In the second direction, the first openings and the first sub-pixel openings are arranged alternately.

[0034] In some embodiments, the second opening is located between the second sub-pixel openings of two adjacent series connection units in the first direction.

[0035] In some embodiments, a plurality of pixel units, the pixel units comprising a first series unit, a second series unit, and a third series unit;

[0036] The light emitting device comprises a first light emitting device, a second light emitting device and a third light emitting device, wherein the first light emitting device, the second light emitting device and the third light emitting device are used to emit light of different colors;

[0037] The first series unit includes at least two of the first light-emitting devices, the second series unit includes at least two of the second light-emitting devices, and the third series unit includes at least two of the third light-emitting devices;

[0038] In the first direction, the second series units and the third series units are arranged alternately;

[0039] In the second direction, the first series units and the second series units are arranged alternately, and the first series units and the third series units are arranged alternately;

[0040] The first direction intersects the second direction.

[0041] In some embodiments, the pixel unit includes one first series unit, the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the third series unit; and / or,

[0042] The pixel unit includes two first series units, the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the third series unit.

[0043] In some embodiments, the first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening;

[0044] The first opening includes a first sub-opening, a third sub-opening, and a fifth sub-opening, the second opening includes a second sub-opening, a fourth sub-opening, and a sixth sub-opening, the first sub-pixel opening includes a third sub-pixel opening, a fifth sub-pixel opening, and a seventh sub-pixel opening, and the second sub-pixel opening includes a fourth sub-pixel opening, a sixth sub-pixel opening, and an eighth sub-pixel opening;

[0045] The first series unit includes the first sub-opening, the second sub-opening, the third sub-pixel opening, and the fourth sub-pixel opening, the second series unit includes the third sub-opening, the fourth sub-opening, the fifth sub-pixel opening, and the sixth sub-pixel opening, and the third series unit includes the fifth sub-opening, the sixth sub-opening, the seventh sub-pixel opening, and the eighth sub-pixel opening;

[0046] The first sub-opening and the third sub-pixel opening are arranged alternately in the first direction, the first sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the second direction, the third sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the second direction, the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening adjacent to each other in the first direction, the first sub-opening and the third sub-opening are arranged alternately in the second direction, the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the first direction, and the second sub-opening, the fourth sub-opening and the sixth sub-opening are all located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent to each other in the first direction; and / or,

[0047] The first sub-opening and the third sub-pixel opening are alternately arranged in the first direction, the first sub-opening is located between the second sub-opening and the third sub-opening arranged in the second direction, the second sub-opening and the fourth sub-pixel opening are alternately arranged in the first direction, the second sub-opening is located between the first sub-opening and the fifth sub-pixel opening arranged in the second direction, the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening arranged in the first direction, the third sub-opening is located between the first sub-opening and the fifth sub-pixel opening arranged in the second direction, the fifth sub-opening is located between the seventh sub-pixel opening and the fourth sub-pixel opening adjacent in the second direction, the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent in the first direction, and the fourth sub-opening and the sixth sub-opening are both located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent in the first direction; and / or,

[0048] The pixel unit includes two first series units, the first series units are arranged along the first direction, the first series units and the second series units are alternately arranged in the second direction, and the first series units and the third series units are alternately arranged in the second direction; the first sub-opening is located between the third sub-pixel opening and the fourth sub-pixel opening arranged in the first direction, and the third sub-pixel opening and the fourth sub-pixel opening belong to different first series units; part of the first sub-opening is located between the fourth sub-pixel opening and the seventh sub-pixel opening arranged in the second direction, and part of the first sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening arranged in the second direction; the second sub-opening is arranged along the second direction, and the third sub-pixel opening is located at the first sub-opening arranged in the first direction and the second sub-opening; the fourth sub-pixel opening is located between the second sub-opening and the first sub-opening arranged in the first direction; the second sub-opening is located between the third sub-pixel opening and the fourth sub-pixel opening arranged in the first direction; the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening arranged in the first direction; the third sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening arranged in the second direction; the fifth sub-opening is located between the seventh sub-pixel opening and the fourth sub-pixel opening adjacent in the second direction; the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent in the first direction; the fourth sub-opening and the sixth sub-opening are both located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent in the first direction.

[0049] In some embodiments, the light-emitting device layer includes a first electrode layer and a second electrode layer, the anode of the light-emitting device is disposed on the first electrode layer, and the cathode of the light-emitting device is disposed on the second electrode layer;

[0050] A plurality of first isolation structures are disposed on a side of the pixel defining layer away from the substrate layer, the first isolation structures are used to isolate the second electrode layer, and the orthographic projections of the first isolation structures on the substrate layer surround the orthographic projections of the pixel openings on the substrate;

[0051] The first opening and the second opening both include a connecting side wall and a partition side wall, the second electrode layer arranged on the connecting side wall is electrically connected to a portion of the first electrode layer, the partition side wall is embedded with a second isolation structure, one side of the second isolation structure is connected to the first electrode layer, and the side of the second isolation structure away from the first electrode layer is connected to the pixel defining layer; the pixel defining layer on the partition side wall and the second isolation structure form a step structure, the step structure is formed by the step difference of the film layer in a third direction, the third direction is the direction in which the partition side wall points to the connecting side wall, and the step structure is used to isolate the second electrode layer on the partition side wall.

[0052] In some embodiments, the orthographic projection of the first isolation structure on the substrate layer surrounds the orthographic projection of the second isolation structure on the substrate layer, and / or the orthographic projection of the first isolation structure on the substrate layer covers the orthographic projection of the second isolation structure on the substrate layer.

[0053] In some embodiments, the first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening;

[0054] The orthographic projection of the first isolation structure on the substrate layer surrounds the first opening and the orthographic projection of the first sub-pixel opening on the substrate layer;

[0055] The orthographic projection of the first isolation structure on the substrate layer surrounds the second opening and the orthographic projection of the second sub-pixel opening on the substrate layer.

[0056] In some embodiments, the orthographic projection area of ​​a side of the first isolation structure close to the pixel definition layer on the substrate layer is smaller than the orthographic projection area of ​​a side of the first isolation structure away from the pixel definition layer on the substrate layer;

[0057] An orthographic projection area of ​​a side of the second isolation structure close to the substrate layer on the substrate layer is larger than an orthographic projection area of ​​a side of the second isolation structure far from the substrate layer on the substrate layer.

[0058] In some embodiments, the first electrode layer includes a connecting electrode, and the driving unit is electrically connected to the cathode of the second sub-light emitting device through the connecting electrode;

[0059] The orthographic projection of the second opening on the substrate layer covers the orthographic projection of the connecting electrode on the substrate layer, and the second electrode layer overlaps a portion of the connecting electrode; and / or,

[0060] The orthographic projection of the isolation structure on the substrate layer falls within the orthographic projection of the connection electrode on the substrate layer.

[0061] In some embodiments, the second sub-light emitting device corresponds to a second sub-pixel opening;

[0062] The orthographic projection of the anode of the second sub-light emitting device on the substrate layer covers the orthographic projections of the second sub-pixel opening and the first opening on the substrate layer.

[0063] According to a second aspect of the present disclosure, a display device is provided, comprising:

[0064] A display panel as described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic cross-sectional view of a display panel provided in an embodiment of the present disclosure;

[0066] Figure 2 A schematic circuit connection diagram of a pixel circuit and a series connection unit provided in an embodiment of the present disclosure;

[0067] Figure 3 A schematic structural diagram of a pixel circuit provided in an embodiment of the present disclosure;

[0068] Figure 4 A schematic partial structural diagram of a display panel provided in an embodiment of the present disclosure;

[0069] Figure 5 A schematic cross-sectional view of a display panel along line A1-A2 provided in an embodiment of the present disclosure;

[0070] Figure 6 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure;

[0071] Figure 7 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure;

[0072] Figure 8 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure;

[0073] Fig. 9 A schematic structural diagram of a display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0074] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0075] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0076] At present, with the continuous development of display technology, the uniformity requirements of display characteristics of display products are getting higher and higher. Usually, the driving unit of the pixel circuit is connected to the anode of the light-emitting device, and the cathode of the light-emitting device is driven by the power signal. The potential of the driving unit will be affected by the cross-voltage between the anode and cathode of the light-emitting device. Under the influence of factors such as the potential of the driving unit, the process uniformity of the light-emitting device, device aging and temperature, the anode potential of the light-emitting device will be inconsistent, which will in turn affect the uniformity of the light-emitting performance of the light-emitting device. The performance difference of the light-emitting device will affect the display uniformity of the display product and affect the display effect of the display product.

[0077] In view of this, the embodiment of the present disclosure provides a display panel in the first aspect, including: a substrate layer, a driving layer and a light-emitting device layer. The driving layer is arranged on one side of the substrate layer, and a plurality of pixel circuits are arranged on the driving layer, and the pixel circuits include a driving unit; the driving layer may also be provided with other driving circuits and driving signal lines, and the driving circuits may be used to drive the pixel circuits, and the driving signal lines may provide driving signals to the driving circuits and the pixel circuits. The light-emitting device layer is arranged on the side of the driving layer away from the substrate layer, and a plurality of light-emitting devices are arranged on the light-emitting device layer; illustratively, the light-emitting device may include an organic light-emitting diode. The driving unit is electrically connected to a series unit, and the series unit includes at least two light-emitting devices connected in series with each other, and the driving unit is electrically connected to a cathode of a light-emitting device in the series unit. The light-emitting device may include an anode and a cathode, and the pixel circuit may provide a driving signal to the light-emitting device of the series unit to drive the light-emitting device to emit light. The light-emitting devices in the series unit may be connected in series by connecting the anode and the cathode in sequence, and the redundant cathodes in the series unit may be connected to the driving unit, and the redundant anodes in the series unit may be connected to the anode driving signal.

[0078] Figure 1 A schematic cross-sectional view of a display panel provided in an embodiment of the present disclosure. Figure 1 The display panel includes a substrate layer 100, a driving layer 200 and a light-emitting device layer 300. The driving layer 200 is located between the substrate layer 100 and the light-emitting device layer 300. The substrate layer 100 can be a flexible substrate or a hard substrate. The flexible substrate can include materials such as polyimide, and the hard substrate can be glass or a silicon wafer.

[0079] Figure 2 A schematic circuit connection diagram of a pixel circuit and a series connection unit provided in an embodiment of the present disclosure. Figure 2 The pixel circuit 210 includes a driving unit 211, and the series unit 310 includes at least two light-emitting devices 311. The light-emitting device 311 includes an anode 301 and a cathode 302. The anodes 301 and cathodes 302 of different light-emitting devices 311 in the series unit 310 are connected in series. The cathode 302 at one end of the series unit 310 is connected to the driving unit 211, and the anode 301 at the other end of the series unit is used to access the anode drive signal VDD.

[0080] Usually, the connection terminal between the driving unit and the anode of the light-emitting device is the first end, while the connection terminal between the driving unit and the cathode of the light-emitting device is the second end. The first end and the second end are different connection terminals. Therefore, the connection terminal where the driving unit is connected to the anode or cathode is different. In the embodiment of the present application, the connection terminal where the cathode of the series unit is connected to the driving unit is different from the connection terminal connected to the anode in the prior art. Then, the potential of the connection terminal where the driving unit is connected to the cathode of the series unit will no longer be affected by the voltage across the two ends of the series unit.

[0081] The display panel of the embodiment of the present disclosure can provide a stable driving signal for the anode of the light-emitting device 311 by connecting the anode of the series unit to the anode driving signal, so that the anode potential of the light-emitting device is stable, and the anode of the light-emitting device in the display panel will not be affected by the potential of the driving unit; as the connection end where the driving unit is connected to the cathode of the series unit changes, the potential of the connection end where the driving unit is connected to the cathode will not be affected by the voltage across the two ends of the series unit, so the current flowing through the driving unit is stable, and the anode potential of the light-emitting device tends to be consistent, so that the luminous performance of the light-emitting device of the display panel can be made consistent, the display uniformity is improved, and the display effect can be improved.

[0082] In addition, after a plurality of light-emitting devices are connected in series, they are driven by a pixel circuit. Under the condition that the driving current remains unchanged, two or more light-emitting devices are driven to emit light, thereby reducing the display driving power consumption.

[0083] In some embodiments, the light emitting devices of the series unit are used to emit light of the same color, that is, the series unit can be used as a pixel of a color, and each pixel has two or more light emitting devices. For example, a red sub-pixel includes two or more red light emitting devices, and the same is true for blue sub-pixels and green sub-pixels. While reducing the display drive power consumption, the pixel opening and wiring layout can also be used to increase the pixel opening rate, thereby improving the resolution of the display panel.

[0084] In some embodiments, the driving unit includes a driving transistor, the driving transistor includes a gate, a source and a drain, the drain of the driving transistor is electrically connected to the cathode of a light-emitting device of the series unit, the source of the driving transistor is electrically connected to the cathode signal line; the anode of another light-emitting device of the series unit is electrically connected to the anode signal line. The driving transistor is a thin film transistor. The series unit includes a first sub-light-emitting device and a second sub-light-emitting device, the cathode of the first sub-light-emitting device is electrically connected to the anode of the second sub-light-emitting device; the cathode of the second sub-light-emitting device is electrically connected to the drain of the driving unit, the anode of the first sub-light-emitting device is electrically connected to the anode signal line, and the anode signal line is used to transmit the anode driving signal.

[0085] Figure 3 A schematic structural diagram of a pixel circuit provided in an embodiment of the present disclosure. Figure 3, the driving unit includes a driving transistor T3, and the pixel circuit also includes a first transistor T1, a second transistor T2, a fourth transistor T4, a fifth transistor T5, a first capacitor C1, and a second capacitor C2. The series unit 310 includes a first sub-light emitting device OLED1 and a second sub-light emitting device OLED2, the first sub-light emitting device OLED1 and the second sub-light emitting device OLED2, the anode of the first sub-light emitting device OLED1 is electrically connected to the anode signal line 201, and can receive the anode driving signal VDD, and the cathode of the second sub-light emitting device OLED2 is electrically connected to the drain d of the driving transistor T3. The source s of the driving transistor T3 is electrically connected to the cathode signal line 202, and is used to receive the cathode driving signal VSS.

[0086] It should be noted that the current flowing through the driving transistor T3 is determined by the gate-source voltage Vgs and the source voltage Vs, so the drain voltage Vd will not affect the current flowing through the driving transistor T3, and the drain d is electrically connected to the cathode of the light-emitting device. The current flowing through the driving transistor T3 will not be affected by the cross-voltage at both ends of the light-emitting device. The current flowing through the driving transistor T3 is stable, and the performance of driving the light-emitting device to emit light is stable, which can improve the display uniformity of the display panel.

[0087] Exemplary, reference Figure 3 , the gate of the first transistor T1 is connected to the first gate signal Gate1, the source of the first transistor T1 is connected to the initial signal Vint, the drain of the first transistor T1 is electrically connected to the second node N2, and the second node N2 is connected to the cathode signal line 202. The source of the second transistor T2 is connected to the initial signal Vint, the gate of the second transistor T2 is connected to the third gate signal line Gate3, and the drain of the second transistor T2 is connected to the third node N3. The gate of the fifth transistor T5 is connected to the second gate signal Gate2, the source of the fifth transistor T5 is connected to the data signal data, and the drain of the fifth transistor T5 is connected to the third node N3. The second capacitor C2 is connected between the second node N2 and the third node N3. The first capacitor C1 is connected between the first node N1 and the second node N2. The source of the fourth transistor T4 is connected to the first node N1, the drain of the fourth transistor T4 is connected to the reference signal Ref, and the gate of the fourth transistor T4 is connected to the fourth gate signal Gate4.

[0088] It should be noted that Figure 3 The circuit structure of the pixel circuit shown is 5T2C (5 thin film transistors and 2 capacitors), which is only an example. The pixel circuit can also be 7T2C or 9T2C, which is not specifically limited in this embodiment.

[0089] In some embodiments, the display panel may include a plurality of pixel units, the pixel unit may be a repeating unit in the display panel, the pixel unit includes a first series unit, a second series unit, and a third series unit; the light emitting devices in different series units emit light of different colors. The light emitting devices include a first light emitting device, a second light emitting device, and a third light emitting device, and the first light emitting device, the second light emitting device, and the third light emitting device are used to emit light of different colors. Exemplarily, the first light emitting device may emit green light, the second light emitting device may emit red light, and the third light emitting device may emit blue light.

[0090] In some examples, the first series unit includes at least two first light emitting devices, the second series unit includes at least two second light emitting devices, and the third series unit includes at least two third light emitting devices. All light emitting devices in the series unit are synchronously driven and can be turned on or off at the same time.

[0091] In some embodiments, the series unit includes a first sub-light emitting device and a second sub-light emitting device, and the light emitting areas of different series units do not overlap. The light emitting device includes an anode, a light emitting layer and a cathode, the light emitting layer is arranged on the side of the anode away from the substrate layer, the cathode is arranged on the side of the light emitting layer away from the anode, and the light emitting layer emits light under the drive of the anode and the cathode. The light emitting device layer includes a first electrode layer and a second electrode layer, the anode of the light emitting device is arranged on the first electrode layer, and the cathode of the light emitting device is arranged on the second electrode layer. The light emitting device layer includes a pixel defining layer, the pixel defining layer is provided with a plurality of pixel openings, and the positive projections of the anode, cathode and light emitting layer on the substrate layer all cover the positive projections of the pixel openings on the substrate layer. The pixel defining layer is provided with a plurality of first openings and a plurality of second openings, the cathode of the first sub-light emitting device is connected to the anode of the second sub-light emitting device through the first opening, the anode of the first sub-light emitting device is electrically connected to the anode signal line, and the cathode of the second sub-light emitting device is connected to the driving unit through the second opening. The first electrode layer includes a connecting electrode, and the driving unit is electrically connected to the cathode of the second sub-light emitting device through the connecting electrode.

[0092] Figure 4 A schematic partial structural diagram of a display panel provided in an embodiment of the present disclosure; Figure 5 A schematic cross-sectional view of a display panel along line A1-A2 provided by an embodiment of the present disclosure. Figure 4 and Figure 5The driving layer 200 includes a first conductive layer 220, a semiconductor layer 230, a second conductive layer 240, a third conductive layer 250, a fourth conductive layer 260, a first insulating layer 270, a second insulating layer 280 and a third insulating layer 290. An insulating layer is provided between the first conductive layer 220 and the semiconductor layer 230, between the semiconductor layer 230 and the second conductive layer 240, between the second conductive layer 240 and the third conductive layer 250, between the third conductive layer 250 and the fourth conductive layer 260, and between the fourth conductive layer 260 and the first electrode layer 320. The insulating layer may be the first insulating layer 270, the second insulating layer 280 or the third insulating layer 290, or other insulating layers. The material of the first insulating layer 270 may be the same as or different from that of the second insulating layer 280. The material of the second insulating layer 280 and the third insulating layer 290 may be the same as or different from that of the third insulating layer 290. Exemplarily, the first insulating layer 270 may include a stacked structure of silicon nitride and silicon oxide. The second insulating layer 280 may be an organic planar material or a passivation material. The third insulating layer 290 may be an organic material or a passivation material.

[0093] Exemplary, reference Figure 4 , the anode signal line 201 and the conductive structure 221 can be set on the first conductive layer 220, and the conductive structure 221 can be used as a light shielding structure of the driving transistor T3 to shield the channel and prevent the ambient light outside the substrate layer 100 from causing light interference to the channel. The conductive structure 221 can also be used as the gate of the driving transistor T3, so that the driving transistor T3 is a transistor with a dual-gate structure. The gate g of the driving transistor T3 is set on the second conductive layer 240. The third conductive layer 250 is provided with a source s, a drain d and a first connection structure 251 of the driving transistor T3, and the fourth conductive layer 260 is provided with a second connection structure 261 and a third connection structure 262. The electrical connection between different conductive layers can be achieved by setting vias in the sandwiched insulating layer.

[0094] Exemplary, reference Figure 4, the light-emitting device layer 300 includes a first electrode layer 320, a second electrode layer 330 and a pixel defining layer 340. The pixel defining layer 340 is provided with a pixel opening, the first sub-light-emitting device OLED1 corresponds to the first sub-pixel opening 303, and the second sub-light-emitting device OLED2 corresponds to the second sub-pixel opening 304. The orthographic projections of the first sub-pixel opening 303 and the second sub-pixel opening 304 on the substrate layer 100 do not overlap, so the light-emitting areas of the first sub-light-emitting device OLED1 and the second sub-light-emitting device OLED2 do not overlap. The pixel defining layer 340 is provided with a first opening 305 and a second opening 306, and the cathode 302 of the first sub-light-emitting device OLED1 is connected to the anode 301 of the second sub-light-emitting device OLED2 through the first opening 305, that is, the cathode 302 of the first sub-light-emitting device OLED1 and the anode 301 of the second sub-light-emitting device OLED2 are overlapped in the first opening 305 to achieve electrical connection. The anode 301 of the first sub-light emitting device OLED1 is electrically connected to the anode signal line 201, and the anode 301 of the first sub-light emitting device OLED1 is connected to the anode signal line 201 in sequence through the third connection structure 262 and the first connection structure 251. The cathode 302 of the second sub-light emitting device OLED2 is connected to the driving transistor T3 of the driving unit through the second opening 306. The first electrode layer 320 includes a connecting electrode 307, and the driving transistor T3 of the driving unit is electrically connected to the cathode 302 of the second sub-light emitting device OLED2 through the connecting electrode 307, that is, the cathode 302 of the second sub-light emitting device OLED2 is electrically connected to the drain d of the driving transistor T3 through the connecting electrode 307, and the cathode 302 of the second sub-light emitting device OLED2 is overlapped with the connecting electrode 307 in the second opening 306 to achieve electrical connection. The connecting electrode 307 is electrically connected to the drain d of the driving transistor T3 through the second connecting structure 261.

[0095] refer to Figure 4 and Figure 5 By setting the first opening 305 and the second opening 306, the two light-emitting devices can be connected in series and arranged without changing the original film layer stacking order to obtain an inverted light-emitting device structure. No additional process flow will be added to be compatible with the existing production process, and power consumption can be reduced. In addition, the two light-emitting devices are connected in series and inverted to improve the pixel aperture ratio, thereby increasing the brightness of the display panel and improving the display effect.

[0096] In some embodiments, a plurality of first isolation structures are provided on a side of the pixel defining layer away from the substrate layer, the first isolation structure is used to isolate the second electrode layer, and the orthographic projection of the first isolation structure on the substrate layer surrounds the orthographic projection of the pixel opening on the substrate; the first isolation structure can isolate the first electrode layer above the pixel defining layer. The first opening and the second opening both include a connecting sidewall and a partitioning sidewall, the second electrode layer provided on the connecting sidewall is electrically connected to a portion of the first electrode layer, the partitioning sidewall is embedded with a second isolation structure, one side of the second isolation structure is connected to the first electrode layer, the side of the second isolation structure away from the first electrode layer is connected to the pixel defining layer, and the pixel defining layer can cover two sides of the second isolation structure; the pixel defining layer on the partitioning sidewall and the second isolation structure form a step structure, the step structure is formed by the step difference of the film layer in the third direction, the third direction is the direction in which the partitioning sidewall points to the connecting sidewall, and the step structure is used to isolate the second electrode layer on the partitioning sidewall. The step structure formed by the second isolation structure can isolate the second electrode layer in the opening. The provision of the first isolation structure and the second isolation structure can ensure that the second electrode layer is completely isolated, that is, the cathodes of different light-emitting devices can be independent electrode blocks, and the cathodes of the light-emitting devices can be independently driven, that is, the series connection of the first sub-light-emitting device and the second sub-light-emitting device and the point connection drive after the series connection can be realized. The simultaneous provision of the first isolation structure and the second isolation structure can enhance the isolation effect of the second electrode layer and ensure the independent driving of the cathodes of the light-emitting devices.

[0097] Exemplary, reference Figure 5 The first isolation structure 360 ​​is located on the side of the pixel defining layer 340 away from the substrate layer 100, and the preparation process of the first isolation structure 360 ​​is before the preparation process of the second electrode layer 330. A step difference is formed between the first isolation structure 360 ​​and the side of the pixel defining layer 340 away from the substrate layer 100, and the second electrode layer can be isolated by the step difference.

[0098] Exemplary, reference Figure 5, the second isolation structure 370 is partially embedded in the pixel defining layer 340. The first opening 305 and the second opening 306 both include a connecting sidewall 308 and a partitioning sidewall 309. The cathode 302 on the connecting sidewall 308 is overlapped and connected with the anode 301 in the first opening 305. A step structure 371 is formed on the partitioning sidewall 309. The step structure 371 is obtained due to the undercut morphology formed by the second isolation structure 370 and the pixel defining layer 340, that is, on the partitioning sidewall 309 of the first opening 305, the second isolation structure 370 shrinks relative to the pixel defining layer 340 to form an undercut. The setting of the step structure 371 can disconnect the second electrode layer 330 on the inner wall of the first opening 305, so as to avoid the second electrode layer 330 on both sides of the first opening 305 being short-circuited and unable to realize the series connection of the light-emitting device. Similarly, the second isolation structure 370 can disconnect the second electrode layer 330 on the inner wall of the second opening 306 , so that the cathode 302 on the connecting sidewall 308 of the second opening 306 overlaps with the connecting electrode 307 in the second opening 306 .

[0099] Exemplary, reference Figure 4 and Figure 5 The first opening 305 is located between the first sub-pixel opening 303 and the second sub-pixel opening 304, a first isolation structure 360 ​​is arranged between the first sub-pixel opening 303 and the second sub-pixel opening 304, a first isolation structure 360 ​​is arranged between the first opening 305 and the second sub-pixel opening 304, a first isolation structure 360 ​​is arranged between the second opening 306 and other pixel openings, and a first force-giving structure 360 ​​is arranged between the first sub-pixel opening 303 and other pixel openings.

[0100] Exemplary, reference Figure 5 The step difference formed between the first isolation structure 360 ​​and the pixel defining layer 340 is a step difference in the thickness direction H, which is a direction perpendicular to the plane where the substrate layer 100 is located. The step difference structure 371 formed between the second isolation structure 370 and the pixel defining layer 340 is in the third direction P, which is the direction from the partition sidewall 309 to the connecting sidewall 308.

[0101] Exemplary, reference Figure 4 and Figure 5 The orthographic projection of the first isolation structure 360 ​​on the substrate layer 100 surrounds the orthographic projection of the pixel opening on the substrate layer 100, that is, the pixel opening is located in the area circled by the first isolation structure 360, and different pixel openings are separated by the first isolation structure 360 ​​to ensure that the cathode of each light-emitting device is independently connected and driven.

[0102] Exemplary, reference Figure 4 and Figure 5, the orthographic projection of the first isolation structure 360 ​​on the substrate layer 100 surrounds the orthographic projection of the first opening 305 and the first sub-pixel opening 303 on the substrate layer 100. The orthographic projection of the first isolation structure 360 ​​on the substrate layer 100 surrounds the orthographic projection of the second opening 360 and the second sub-pixel opening 304 on the substrate layer 100. That is, the first opening 305 and the first sub-pixel opening 303 are located in the same area encircled by the first isolation structure 360, and the second opening 306 and the second sub-pixel opening 304 are located in the same area encircled by the first isolation structure 360.

[0103] In some examples, an orthographic projection of the first isolation structure on the substrate layer surrounds an orthographic projection of the second isolation structure on the substrate layer.

[0104] Exemplary, reference Figure 4 and Figure 5 The orthographic projection of the first isolation structure 360 ​​on the substrate layer surrounds the orthographic projection of the second isolation structure 370 on the substrate layer corresponding to the second opening 306.

[0105] In some examples, an orthographic projection of the first isolation structure on the substrate layer covers an orthographic projection of the second isolation structure on the substrate layer.

[0106] Exemplary, reference Figure 5 , the orthographic projection of the first isolation structure 360 ​​on the substrate layer covers the orthographic projection of the second isolation structure 370 on the substrate layer corresponding to the first opening 305 .

[0107] In some embodiments, the orthographic projection area of ​​the first isolation structure on the side close to the pixel defining layer on the substrate layer is smaller than the orthographic projection area of ​​the first isolation structure on the side away from the pixel defining layer on the substrate layer; the size of the first isolation structure on one end close to the pixel defining layer is smaller than the size on the end away from the pixel defining layer.

[0108] Exemplary, reference Figure 5 The first isolation structure 360 ​​is a structure that is wide at the top and narrow at the bottom. The cross-sectional shape of the first isolation structure 360 ​​is an inverted trapezoidal structure. The structure that is wide at the top and narrow at the bottom is similar to an undercut structure. The angle formed by the side surface of the first isolation structure 360 ​​and the upper surface of the pixel defining layer is an acute angle, so that the second electrode layer 330 is broken at the edge of the first isolation structure 360 ​​when it is covered on the first isolation structure 360. Due to the undercut structure, the side surface of the first isolation structure 360 ​​is a concave side surface, so the second electrode layer 330 is not easy to remain on the side surface of the first isolation structure 360, and the second electrode layer 330 can be better isolated.

[0109] Exemplarily, the cross-sectional shape of the first isolation structure may also be a triangle or other quadrilateral.

[0110] Exemplarily, the first isolation structure may be disposed on the same layer as the support structure of the display panel, and the support structure may play a role in supporting the film layer.

[0111] Exemplarily, the first isolation structure between adjacent pixel openings is shared, and can provide a partitioning effect of the second electrode layer for the two pixel openings.

[0112] Exemplarily, the shape of the area enclosed by the first isolation structure may be a quadrilateral, a triangle or other polygons, which can facilitate the layout of pixel openings and easily achieve a large aperture ratio.

[0113] In some embodiments, the orthographic projection area of ​​the second isolation structure on the substrate layer is larger than the orthographic projection area of ​​the second isolation structure on the substrate layer away from the substrate layer. The size of the second isolation structure on one end close to the substrate layer is larger than the size of the second isolation structure on the end away from the substrate layer.

[0114] Exemplary, reference Figure 5 The second isolation structure 370 is a structure that is narrow at the top and wide at the bottom. The angle formed between the side surface of the second isolation structure 370 and the upper surface of the connection electrode 307 is an obtuse angle. The preparation process of the second isolation structure can be prior to the preparation process of the pixel definition layer. When the pixel definition layer covers the second isolation structure 370, in the process of etching to form the first opening 305 and the second opening 306, the second isolation structure 370 is narrow at the top, so that the pixel definition layer forms an undercut structure, thereby obtaining a step structure 271.

[0115] Exemplarily, the second isolation structure may also be a structure that is wide at the top and narrow at the bottom, and the isolation of the second electrode layer can be achieved as long as a step difference is formed on the isolation sidewall.

[0116] In some embodiments, the orthographic projection of the second opening on the substrate layer covers the orthographic projection of the connecting electrode on the substrate layer, and the second electrode layer overlaps a portion of the connecting electrode.

[0117] In some embodiments, the orthographic projection of the isolation structure on the substrate layer falls within the orthographic projection of the connection electrode on the substrate layer, thereby ensuring sufficient connection between the connection electrode and the second electrode layer.

[0118] Exemplary, reference Figure 5 The second opening 306 is provided to expose the upper side of the connecting electrode 307 , and the exposed part of the connecting electrode 307 is used to overlap the cathode 302 of the second sub-light emitting device OLED2 . Part of the connecting electrode 307 overlaps the second isolation structure 370 .

[0119] Exemplarily, the connection electrode 307 may not overlap with the second isolation structure 370, and the overlapping setting can fully ensure the connection between the connection electrode 307 and the second electrode layer.

[0120] In some embodiments, an orthographic projection of the anode of the second sub-light emitting device on the substrate layer covers an orthographic projection of the second sub-pixel opening and the first opening on the substrate layer.

[0121] Exemplarily, the first opening 305 is provided to expose a portion of the surface of the anode of the second sub-light emitting device OLED2, and the exposed portion of the anode surface is connected to the cathode 302 of the first sub-light emitting device OLED1. The anode of the second sub-light emitting device OLED2 extends to the area where the first opening 305 is located, which can be used to realize the series connection of the second sub-light emitting device OLED2 and the first sub-light emitting device OLED1.

[0122] In some embodiments, the light emitting regions of the plurality of light emitting devices in the series unit have the same area.

[0123] Exemplary, reference Figure 4 The shapes of the first sub-light-emitting device OLED1 and the second sub-light-emitting device OLED2 are inconsistent, that is, the shapes of the first sub-pixel opening 303 and the second sub-pixel opening 304 are different, that is, the lengths and widths of the two rectangles are inconsistent, which can easily achieve a layout with greater freedom and thus achieve a high aperture ratio.

[0124] Exemplarily, the light emitting areas of the first sub-light emitting device OLED1 and the second sub-light emitting device OLED2 may be the same, and the first sub-light emitting device OLED1 and the second sub-light emitting device OLED2 connected in series may be driven by the same current to emit consistent brightness.

[0125] In some embodiments, the orthographic projection area of ​​the first sub-pixel opening on the substrate layer is the same as the orthographic projection area of ​​the second sub-pixel opening on the substrate layer. The pixel opening is used to expose the anode, and the area of ​​the pixel opening can determine the light emitting area of ​​the light emitting device. The first sub-pixel opening and the second sub-pixel opening have the same area, which can achieve the same light emitting area area of ​​the first sub-light emitting device OLED1 and the second sub-light emitting device OLED2.

[0126] Exemplary, reference Figure 4 Although the length and width of the first sub-pixel opening 303 and the second sub-pixel opening 304 are different, their areas can be the same.

[0127] In some embodiments, the first direction intersects the second direction. The first direction may be the row direction of the matrix, and the second direction may be the column direction of the matrix. In the first direction, the size of the first sub-pixel opening is smaller than that of the second sub-pixel opening; in the second direction, the size of the first sub-pixel opening is larger than that of the second sub-pixel opening; in the first direction, the first opening and the first sub-pixel opening are arranged alternately; in the second direction, the first opening and the second sub-pixel opening are arranged alternately. The first opening may be arranged on the same side as the shorter first sub-pixel opening in the first direction, and the first opening and the shorter first sub-pixel opening in the first direction are arranged corresponding to the long side of the longer second sub-pixel opening.

[0128] In some examples, in the first direction, the size of the first sub-pixel opening is larger than that of the second sub-pixel opening; in the second direction, the size of the first sub-pixel opening is smaller than that of the second sub-pixel opening; in the first direction, the first opening and the second sub-pixel opening are arranged alternately; in the second direction, the first opening and the first sub-pixel opening are arranged alternately. The first opening may be arranged on the same side as the shorter first sub-pixel opening in the second direction, and the first opening and the shorter first sub-pixel opening in the second direction are arranged corresponding to the long side of the longer second sub-pixel opening.

[0129] In some embodiments, the second opening is located between the second sub-pixel openings of two adjacent series units in the first direction.

[0130] In some embodiments, the display panel may include a plurality of pixel units. The pixel unit may be a repeating unit in the display panel. The pixel unit includes a first series unit, a second series unit, and a third series unit.

[0131] Exemplarily, the first series unit may emit green light, the second series unit may emit red light, and the third series unit may emit blue light.

[0132] In some examples, in the first direction, the second series unit and the third series unit are arranged alternately; in the second direction, the first series unit and the second series unit are arranged alternately, and the first series unit and the third series unit are arranged alternately.

[0133] Exemplarily, the pixel unit may include one first series unit, one second series unit, and one first third series unit. Then, the first series unit, the second series unit, and the third series unit in the pixel unit may be arranged in a "pin" shape.

[0134] Exemplarily, the pixel unit may include two first series units, one second series unit, and one first third series unit. Then, the first series unit, the second series unit, and the third series unit in the pixel unit may be arranged in a character shape.

[0135] In some embodiments, the pixel unit includes a first series unit, the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the third series unit. Then, for the pixels arranged in a "pink" shape, the green pixel opening area is larger than the red and blue pixel opening areas.

[0136] In some embodiments, the pixel unit includes two first series units, the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the third series unit. For pixels arranged in a font, the area of ​​a single green pixel opening is smaller than or equal to that of red and blue.

[0137] Figure 6 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure. In some embodiments, reference Figure 6 The first opening includes a first sub-opening 341, a third sub-opening 343 and a fifth sub-opening 345, the second opening includes a second sub-opening 342, a fourth sub-opening 344 and a sixth sub-opening 346, the first sub-pixel opening includes a third sub-pixel opening 303-3, a fifth sub-pixel opening 303-5 and a seventh sub-pixel opening 303-7, and the second sub-pixel opening includes a fourth sub-pixel opening 304-4, a sixth sub-pixel opening 304-6 and an eighth sub-pixel opening 304-8.

[0138] Exemplary, reference Figure 6 The first series unit 311 includes a first sub-opening 341, a second sub-opening 342, a third sub-pixel opening 303-3 and a fourth sub-pixel opening 304-4, the second series unit 312 includes a third sub-opening 343, a fourth sub-opening 344, a fifth sub-pixel opening 303-5 and a sixth sub-pixel opening 304-6, and the third series unit 313 includes a fifth sub-opening 345, a sixth sub-opening 346, a seventh sub-pixel opening 303-7 and an eighth sub-pixel opening 304-8.

[0139] In some examples, reference Figure 6The first sub-opening 341 and the third sub-pixel opening 303-3 are alternately arranged in the first direction X, the first sub-opening 341 is located between the fourth sub-pixel opening 304-4 and the fifth sub-pixel opening 303-5 adjacent to each other in the second direction Y, the third sub-opening 343 is located between the fourth sub-pixel opening 304-4 and the fifth sub-pixel opening 303-5 adjacent to each other in the second direction Y, the third sub-opening 343 is located between the sixth sub-pixel opening 304-6 and the seventh sub-pixel opening 303-7 adjacent to each other in the first direction, and the first sub-opening 341 and the third sub-opening 343 are alternately arranged in the second direction Y. The fifth sub-opening 345 is located between the seventh sub-pixel opening 303-7 and the third sub-pixel opening 303-3 adjacent to each other in the second direction Y, the fifth sub-opening 345 is located between the eighth sub-pixel opening 304-8 and the fifth sub-pixel opening 303-5 adjacent to each other in the first direction X, and the second sub-opening 342, the fourth sub-opening 344 and the sixth sub-opening 346 are all located between the sixth sub-pixel opening 304-6 and the eighth sub-pixel opening 304-8 adjacent to each other in the first direction X.

[0140] In some examples, reference Figure 6 The pixel unit includes a first series unit 311, a second series unit 312 and a third series unit 313. The series units in the pixel unit are arranged in a "pin" shape. The light emitting area of ​​the first series unit 311 is larger than the light emitting areas of the second series unit 312 and the third series unit 313. The areas of the third sub-pixel opening 303-3 and the fourth sub-pixel opening 304-4 are both larger than the areas of the fifth sub-pixel opening 303-5, the sixth sub-pixel opening 304-6, the seventh sub-pixel opening 303-7 and the eighth sub-pixel opening 304-8.

[0141] In some examples, reference Figure 6, in the first direction X, the size of the fourth sub-pixel opening 304-4 is larger than the size of the third sub-pixel opening 303-3, and the third sub-pixel opening 303-3 is shorter in the first direction X. The first sub-opening 341 is arranged side by side with the third sub-pixel opening 303-3, and the first sub-opening 341 supplements the gap of the shorter third sub-pixel opening 303-3. In the second direction Y, the size of the third sub-pixel opening 303-3 is larger than the size of the fourth sub-pixel opening 304-4. The first sub-opening 341 and the third sub-pixel opening 303-3 correspond to the long side of the fourth sub-pixel opening 304-4. In the second direction Y, the size of the sixth sub-pixel opening 304-6 is larger than the size of the fifth sub-pixel opening 303-5, and the fifth sub-pixel opening 303-5 is shorter in the second direction Y. The third sub-opening 343 and the fifth sub-pixel opening 303-5 are arranged in the same row and correspond to the long side of the sixth sub-pixel opening 304-6. In the first direction X, the size of the fifth sub-pixel opening 303-5 is larger than the size of the sixth sub-pixel opening 304-6. In the second direction Y, the size of the eighth sub-pixel opening 304-8 is larger than the size of the seventh sub-pixel opening 303-7. In the second direction Y, the seventh sub-pixel opening 303-7 is shorter, and the fifth sub-opening 345 and the seventh sub-pixel opening 303-7 are in the same row corresponding to the long side of the eighth sub-pixel opening 304-8. In the first direction X, the size of the seventh sub-pixel opening 303-7 is larger than the size of the eighth sub-pixel opening 304-8. The pixel openings can be arranged more reasonably to achieve a larger aperture ratio.

[0142] In some examples, reference Figure 6 The area of ​​the third sub-pixel opening 303-3 is the same as the area of ​​the fourth sub-pixel opening 304-4. The area of ​​the fifth sub-pixel opening 303-5 is the same as the area of ​​the sixth sub-pixel opening 304-6. The area of ​​the seventh sub-pixel opening 303-7 is the same as the area of ​​the eighth sub-pixel opening 304-8.

[0143] Figure 7 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure. In some embodiments, reference Figure 7, the first sub-opening 341 and the third sub-pixel opening 303-3 are alternately arranged in the first direction X, the first sub-opening 341 is located between the second sub-opening 342 and the third sub-opening 343 arranged in the second direction Y, the second sub-opening 342 and the fourth sub-pixel opening 304-4 are alternately arranged in the first direction X, the second sub-opening 342 is located between the first sub-opening 341 and the fifth sub-pixel opening 303-5 arranged in the second direction Y, and the third sub-opening 343 is located between the sixth sub-pixel opening 304-6 and the seventh sub-pixel opening 303-7 arranged in the first direction X, The third sub-opening 343 is located between the first sub-opening 341 and the fifth sub-pixel opening 303-5 arranged in the second direction Y, the fifth sub-opening 345 is located between the seventh sub-pixel opening 303-7 and the fourth sub-pixel opening 304-4 adjacent to each other in the second direction Y, the fifth sub-opening 345 is located between the eighth sub-pixel opening 304-8 and the fifth sub-pixel opening 303-5 adjacent to each other in the first direction X, and the fourth sub-opening 344 and the sixth sub-opening 346 are both located between the sixth sub-pixel opening 304-6 and the eighth sub-pixel opening 304-8 adjacent to each other in the first direction X.

[0144] Exemplary, reference Figure 7 , the first direction X may be a row direction, and the second direction Y may be a column direction. In the first direction X, the third sub-opening 343 and the sixth sub-opening 346 are arranged in the same row, and the third sub-opening 343 and the fourth sub-opening 344 are arranged in a staggered row. The fourth sub-opening 344 and the sixth sub-opening 346 are arranged in the same column. The fourth sub-opening 344 and the fifth sub-opening 345 are arranged in the same row, and the sixth sub-opening 346 and the fifth sub-opening 345 are arranged in a staggered row.

[0145] Figure 8 A schematic partial structural diagram of another display panel provided in an embodiment of the present disclosure. In some embodiments, reference Figure 8 , the pixel unit may include two first series units 311, one second series unit 312 and a first third series unit 313, then the first series unit 311, the second series unit 312 and the third series unit 313 in the pixel unit may be Font arrangement.

[0146] Exemplary, reference Figure 8The pixel unit includes two first series units 311, the first series units 311 are arranged along the first direction X, the first series units 311 and the second series units 312 are alternately arranged in the second direction Y, and the first series units 311 and the third series units 313 are alternately arranged in the second direction Y; the first sub-opening 341 is located between the third sub-pixel opening 303-3 and the fourth sub-pixel opening 304-4 arranged in the first direction X, and the third sub-pixel opening 303-3 and the fourth sub-pixel opening 304-4 on both sides of the first sub-opening 341 belong to different first series units 311; part of the first sub-opening 341 is located between the fourth sub-pixel opening 304-4 and the seventh sub-pixel opening 303-7 arranged in the second direction Y, and part of the first sub-opening 341 is located between the fourth sub-pixel opening 304-4 and the fifth sub-pixel opening 303-5 arranged in the second direction Y; the second sub-opening 342 is arranged in the second direction Y, and the third sub-pixel opening 303-3 is located between the first sub-opening 341 and the seventh sub-pixel opening 303-7 arranged in the second direction Y, and the first sub-opening 341 is located between the fourth sub-pixel opening 304-4 and the fifth sub-pixel opening 303-5 arranged in the second direction Y. The fourth sub-pixel opening 304-4 is located between the second sub-opening 342 and the first sub-opening 341 arranged in the first direction X, the second sub-opening 342 is located between the third sub-pixel opening 303-3 and the fourth sub-pixel opening 304-4 arranged in the first direction X; the third sub-opening 343 is located between the sixth sub-pixel opening 304-6 and the seventh sub-pixel opening 303-7 arranged in the first direction X, and the third sub-opening 343 is located between the fourth sub-pixel opening 304-6 and the seventh sub-pixel opening 304-7 arranged in the first direction X. The fifth sub-opening 345 is located between the seventh sub-pixel opening 303-7 and the fourth sub-pixel opening 304-4 which are adjacent to each other in the second direction Y, the fifth sub-opening 345 is located between the eighth sub-pixel opening 304-8 and the fifth sub-pixel opening 303-5 which are adjacent to each other in the first direction X, and the fourth sub-opening 344 and the sixth sub-opening 346 are both located between the sixth sub-pixel opening 304-6 and the eighth sub-pixel opening 304-8 which are adjacent to each other in the first direction X.

[0147] Exemplary, reference Figure 8 The first direction X may be a row direction, and the second direction Y may be a column direction. In the first direction X, the first sub-openings 341 and the second sub-openings 342 belonging to different first series units 311 are arranged in the same row, and the first sub-openings 341 and the second sub-openings 342 of the same first series unit 311 are arranged in staggered rows. The second sub-openings 342, the fourth sub-openings 344 and the sixth sub-openings 346 are arranged in the same column.

[0148] Exemplary, reference Figure 8 In the first direction X, the size of the fourth sub-pixel opening 304-4 is larger than the size of the third sub-pixel opening 303-3. In the second direction Y, the size of the third sub-pixel opening 303-3 is larger than the size of the fourth sub-pixel opening 304-4.

[0149] Exemplary, reference Figures 6 to 8 The first sub-opening 341 and the third sub-pixel opening 303-3 are surrounded by the first isolation structure 360 ​​in one area, and the second sub-opening 342 and the fourth sub-pixel opening 304-4 are surrounded by the first isolation structure 360 ​​in one area. The third sub-opening 343 and the fifth sub-pixel opening 303-5 are surrounded by the first isolation structure 360 ​​in one area, and the fourth sub-opening 344 and the sixth sub-pixel opening 304-6 are surrounded by the first isolation structure 360 ​​in one area. The fifth sub-opening 345 and the seventh sub-pixel opening 303-7 are surrounded by the first isolation structure 360 ​​in one area, and the sixth sub-opening 346 and the eighth sub-pixel opening 304-8 are surrounded by the first isolation structure 360 ​​in one area.

[0150] Exemplary, reference Figures 6 to 8 The first sub-opening 341 and the first electrode layer 320 corresponding to the fourth sub-pixel opening 304-4 are an integrated structure. The third sub-opening 343 and the first electrode layer 320 corresponding to the sixth sub-pixel opening 304-6 are an integrated structure. The fifth sub-opening 345 and the first electrode layer 320 corresponding to the eighth sub-pixel opening 304-8 are an integrated structure.

[0151] According to a second aspect of the present disclosure, a display device is provided. Fig. 9 Schematic diagram of a display device provided by an embodiment of the present disclosure. Fig. 9 As shown, the display device includes: any display panel 1000 provided in the above embodiments.

[0152] The display panel of the display device of the embodiment of the present disclosure can provide a stable driving signal for the anode of the light-emitting device 311 by connecting the anode of the series unit to the anode driving signal, so that the anode potential of the light-emitting device is stable, and the anode of the light-emitting device in the display panel will not be affected by the potential of the driving unit; in addition, as the connection end where the driving unit is connected to the cathode of the series unit changes, the potential of the connection end where the driving unit is connected to the cathode will not be affected by the voltage across the two ends of the series unit, so the current flowing through the driving unit is stable, and the anode potential of the light-emitting device tends to be consistent, so that the luminous performance of the light-emitting device of the display panel can be made consistent, the display uniformity is improved, and the display effect can be improved.

[0153] In addition, when multiple light-emitting devices are connected in series and driven by a pixel circuit, the driving current remains unchanged, and two or more light-emitting devices are driven to emit light, which can reduce the display driving power consumption.

[0154] It should be noted that the display devices provided in the examples of the present disclosure may include smart phones, tablet computers, laptop computers, televisions, and smart wearable display devices, etc. The smart wearable display devices may include smart watches, VR (augmented reality) displays, and AR (virtual reality) displays, etc., and the embodiments of the present disclosure are not specifically limited.

[0155] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

[0156] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0157] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A display panel, characterized in that: include: substrate layer; A driving layer, disposed on one side of the substrate layer, wherein the driving layer is provided with a plurality of pixel circuits, and the pixel circuits include a driving unit; A light emitting device layer, arranged on a side of the driving layer away from the substrate layer, wherein the light emitting device layer is provided with a plurality of light emitting devices; The driving unit is electrically connected to a series unit, wherein the series unit includes at least two light-emitting devices connected in series, and the driving unit is electrically connected to a cathode of one of the light-emitting devices in the series unit.

2. The display panel according to claim 1, characterized in that: The light emitting devices of the series connection units are used to emit light of the same color.

3. The display panel according to claim 2, characterized in that: The driving unit comprises a driving transistor, the driving transistor comprises a source and a drain, the drain of the driving transistor is electrically connected to the cathode of one of the light-emitting devices of the series unit, and the source of the driving transistor is electrically connected to the cathode signal line; An anode of another light emitting device in the series unit is electrically connected to an anode signal line.

4. The display panel according to claim 3, characterized in that: The series unit comprises a first sub-light emitting device and a second sub-light emitting device, wherein a cathode of the first sub-light emitting device is electrically connected to an anode of the second sub-light emitting device; The cathode of the second sub-light emitting device is electrically connected to the drain of the driving unit, and the anode of the first sub-light emitting device is electrically connected to the anode signal line.

5. The display panel according to claim 1, characterized in that: The light emitting regions of the plurality of light emitting devices in the series unit have the same area.

6. The display panel according to any one of claims 1 to 5, characterized in that: The series unit comprises a first sub-light emitting device and a second sub-light emitting device, and light emitting areas of different series units do not overlap; The light emitting device comprises an anode, a light emitting layer and a cathode, wherein the light emitting layer is arranged on a side of the anode away from the substrate layer, and the cathode is arranged on a side of the light emitting layer away from the anode; The light-emitting device layer comprises a pixel defining layer, the pixel defining layer is provided with a plurality of pixel openings, and the orthographic projections of the anode, the cathode and the light-emitting layer on the substrate layer all cover the orthographic projections of the pixel openings on the substrate layer; The pixel defining layer is provided with a plurality of first openings and a plurality of second openings, the cathode of the first sub-light-emitting device is connected to the anode of the second sub-light-emitting device through the first opening, the anode of the first sub-light-emitting device is electrically connected to the anode signal line, and the cathode of the second sub-light-emitting device is connected to the driving unit through the second opening.

7. The display panel according to claim 6, characterized in that: The first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening; The orthographic projection area of ​​the first sub-pixel opening on the substrate layer is the same as the orthographic projection area of ​​the second sub-pixel opening on the substrate layer.

8. The display panel according to claim 6, characterized in that: The first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening; The first direction intersects the second direction; in, In the first direction, the size of the first sub-pixel opening is smaller than the size of the second sub-pixel opening; In the second direction, the size of the first sub-pixel opening is larger than the size of the second sub-pixel opening; In the first direction, the first openings and the first sub-pixel openings are arranged alternately; In the second direction, the first openings and the second sub-pixel openings are arranged alternately; and / or, In the first direction, the size of the first sub-pixel opening is larger than the size of the second sub-pixel opening; In the second direction, the size of the first sub-pixel opening is smaller than the size of the second sub-pixel opening; In the first direction, the first openings and the second sub-pixel openings are arranged alternately; In the second direction, the first openings and the first sub-pixel openings are arranged alternately.

9. The display panel according to claim 8, characterized in that: The second opening is located between the second sub-pixel openings of two adjacent series connection units in the first direction.

10. The display panel according to claim 6, characterized in that: include: A plurality of pixel units, wherein the pixel units include a first series connection unit, a second series connection unit, and a third series connection unit; The light emitting device comprises a first light emitting device, a second light emitting device and a third light emitting device, wherein the first light emitting device, the second light emitting device and the third light emitting device are used to emit light of different colors; The first series unit includes at least two of the first light-emitting devices, the second series unit includes at least two of the second light-emitting devices, and the third series unit includes at least two of the third light-emitting devices; In the first direction, the second series units and the third series units are arranged alternately; In the second direction, the first series units and the second series units are arranged alternately, and the first series units and the third series units are arranged alternately; The first direction intersects the second direction.

11. The display panel according to claim 10, characterized in that: The pixel unit includes a first series unit, the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is larger than the area of ​​the pixel opening corresponding to the third series unit; and / or, The pixel unit includes two first series units, the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the second series unit, and the area of ​​the pixel opening corresponding to the first series unit is less than or equal to the area of ​​the pixel opening corresponding to the third series unit.

12. The display panel according to claim 10, characterized in that: The first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening; The first opening includes a first sub-opening, a third sub-opening, and a fifth sub-opening, the second opening includes a second sub-opening, a fourth sub-opening, and a sixth sub-opening, the first sub-pixel opening includes a third sub-pixel opening, a fifth sub-pixel opening, and a seventh sub-pixel opening, and the second sub-pixel opening includes a fourth sub-pixel opening, a sixth sub-pixel opening, and an eighth sub-pixel opening; The first series unit includes the first sub-opening, the second sub-opening, the third sub-pixel opening, and the fourth sub-pixel opening, the second series unit includes the third sub-opening, the fourth sub-opening, the fifth sub-pixel opening, and the sixth sub-pixel opening, and the third series unit includes the fifth sub-opening, the sixth sub-opening, the seventh sub-pixel opening, and the eighth sub-pixel opening; The first sub-opening and the third sub-pixel opening are alternately arranged in the first direction, the first sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the second direction, the third sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the second direction, the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening adjacent to each other in the first direction, the first sub-opening and the third sub-opening are alternately arranged in the second direction, the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent to each other in the first direction, and the second sub-opening, the fourth sub-opening and the sixth sub-opening are all located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent to each other in the first direction; and / or, The first sub-opening and the third sub-pixel opening are alternately arranged in the first direction, the first sub-opening is located between the second sub-opening and the third sub-opening arranged in the second direction, the second sub-opening and the fourth sub-pixel opening are alternately arranged in the first direction, the second sub-opening is located between the first sub-opening and the fifth sub-pixel opening arranged in the second direction, the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening arranged in the first direction, the third sub-opening is located between the first sub-opening and the fifth sub-pixel opening arranged in the second direction, the fifth sub-opening is located between the seventh sub-pixel opening and the fourth sub-pixel opening adjacent in the second direction, the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent in the first direction, and the fourth sub-opening and the sixth sub-opening are both located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent in the first direction; and / or, The pixel unit includes two first series units, the first series units are arranged along the first direction, the first series units and the second series units are alternately arranged in the second direction, and the first series units and the third series units are alternately arranged in the second direction; the first sub-opening is located between the third sub-pixel opening and the fourth sub-pixel opening arranged in the first direction, and the third sub-pixel opening and the fourth sub-pixel opening belong to different first series units; part of the first sub-opening is located between the fourth sub-pixel opening and the seventh sub-pixel opening arranged in the second direction, and part of the first sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening arranged in the second direction; the second sub-opening is arranged along the second direction, and the third sub-pixel opening is located at the first sub-opening arranged in the first direction and the second sub-opening; the fourth sub-pixel opening is located between the second sub-opening and the first sub-opening arranged in the first direction; the second sub-opening is located between the third sub-pixel opening and the fourth sub-pixel opening arranged in the first direction; the third sub-opening is located between the sixth sub-pixel opening and the seventh sub-pixel opening arranged in the first direction; the third sub-opening is located between the fourth sub-pixel opening and the fifth sub-pixel opening arranged in the second direction; the fifth sub-opening is located between the seventh sub-pixel opening and the fourth sub-pixel opening adjacent in the second direction; the fifth sub-opening is located between the eighth sub-pixel opening and the fifth sub-pixel opening adjacent in the first direction; the fourth sub-opening and the sixth sub-opening are both located between the sixth sub-pixel opening and the eighth sub-pixel opening adjacent in the first direction.

13. The display panel according to claim 6, characterized in that: The light emitting device layer comprises a first electrode layer and a second electrode layer, the anode of the light emitting device is arranged on the first electrode layer, and the cathode of the light emitting device is arranged on the second electrode layer; A plurality of first isolation structures are disposed on a side of the pixel defining layer away from the substrate layer, the first isolation structures are used to isolate the second electrode layer, and the orthographic projections of the first isolation structures on the substrate layer surround the orthographic projections of the pixel openings on the substrate; The first opening and the second opening both include a connecting side wall and a partition side wall, the second electrode layer arranged on the connecting side wall is electrically connected to a portion of the first electrode layer, the partition side wall is embedded with a second isolation structure, one side of the second isolation structure is connected to the first electrode layer, and the side of the second isolation structure away from the first electrode layer is connected to the pixel defining layer; the pixel defining layer on the partition side wall and the second isolation structure form a step structure, the step structure is formed by the step difference of the film layer in a third direction, the third direction is the direction in which the partition side wall points to the connecting side wall, and the step structure is used to isolate the second electrode layer on the partition side wall.

14. The display panel according to claim 13, characterized in that: The orthographic projection of the first isolation structure on the substrate layer surrounds the orthographic projection of the second isolation structure on the substrate layer, and / or the orthographic projection of the first isolation structure on the substrate layer covers the orthographic projection of the second isolation structure on the substrate layer.

15. The display panel according to claim 13, characterized in that: The first sub-light emitting device corresponds to a first sub-pixel opening, and the second sub-light emitting device corresponds to a second sub-pixel opening; The orthographic projection of the first isolation structure on the substrate layer surrounds the first opening and the orthographic projection of the first sub-pixel opening on the substrate layer; The orthographic projection of the first isolation structure on the substrate layer surrounds the second opening and the orthographic projection of the second sub-pixel opening on the substrate layer.

16. The display panel according to claim 13, characterized in that: The orthographic projection area of ​​a side of the first isolation structure close to the pixel definition layer on the substrate layer is smaller than the orthographic projection area of ​​a side of the first isolation structure far from the pixel definition layer on the substrate layer; An orthographic projection area of ​​a side of the second isolation structure close to the substrate layer on the substrate layer is larger than an orthographic projection area of ​​a side of the second isolation structure far from the substrate layer on the substrate layer.

17. The display panel according to claim 13, characterized in that: The first electrode layer includes a connecting electrode, and the driving unit is electrically connected to the cathode of the second sub-light emitting device through the connecting electrode; The orthographic projection of the second opening on the substrate layer covers the orthographic projection of the connecting electrode on the substrate layer, and the second electrode layer overlaps a portion of the connecting electrode; and / or, The orthographic projection of the isolation structure on the substrate layer falls within the orthographic projection of the connection electrode on the substrate layer.

18. The display panel according to claim 13, characterized in that: The second sub-light emitting device corresponds to a second sub-pixel opening; The orthographic projection of the anode of the second sub-light emitting device on the substrate layer covers the orthographic projections of the second sub-pixel opening and the first opening on the substrate layer.

19. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 18.

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