CN220858824U

CN220858824U - Display panel and display device

Info

Publication number: CN220858824U
Application number: CN202322492768.2U
Authority: CN
Inventors: 曾章和; 高志扬; 崔海峰
Original assignee: Vision Technology Co ltd
Current assignee: Vision Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-09-13
Publication date: 2024-04-26
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses a display panel and a display device, wherein the display panel comprises a substrate and a plurality of sub-pixels; the sub-pixel comprises a first electrode, wherein the first electrode comprises a bottom electrode and a transparent electrode which are arranged in a laminated manner; the display panel comprises a plurality of pixel limiting structures and a plurality of separation structures, wherein the pixel limiting structures are positioned between two adjacent sub-pixels, the separation structures are positioned on one side of the pixel limiting structures far away from the substrate, and the separation structures comprise a plurality of insulating layers; forming at least one inward shrinking portion positioned on one side close to the substrate and at least one extending portion positioned above the inward shrinking portion at the end of the multi-layer insulating layer along the thickness direction of the display panel; the length of the extending part which is adjacently arranged is longer than that of the shrinking part; the display panel further comprises a plurality of organic film layers and a second electrode arranged on the upper layer of the organic film layers, wherein the second electrode is a common electrode, and the organic film layers comprise a plurality of common organic film layers. By adjusting the end shape of the separation structure, the display effect of the display panel is improved.

Description

Display panel and display device

Technical Field

The embodiment of the utility model relates to the technical field of display, in particular to a display panel and a display device.

Background

The existing micro organic light-emitting display device, such as a silicon-based micro organic light-emitting display device, uses a monocrystalline silicon chip as a substrate, the pixel size is 1/10 of that of a traditional display device, and the fineness is far higher than that of the traditional device.

In the micro silicon-based OLED display device, the problem of crosstalk between adjacent pixel units is caused by the extremely small pixel size, and how to reduce the problem of crosstalk between adjacent pixel units becomes a research hot spot.

Disclosure of utility model

The embodiment of the utility model provides a display panel and a display device, which can further ensure the display effect of the display panel by adjusting a separation structure.

In a first aspect, a display panel provided by an embodiment of the present utility model includes a substrate and a plurality of sub-pixels located at one side of the substrate;

The sub-pixel comprises a first electrode, wherein the first electrode comprises a bottom electrode and a transparent electrode which are arranged in a laminated mode, and the transparent electrode is positioned on one side, away from the substrate, of the bottom electrode;

The display panel comprises a plurality of pixel limiting structures and a plurality of separation structures, wherein the pixel limiting structures are positioned between two adjacent sub-pixels, the separation structures are positioned on one side, away from the substrate, of the pixel limiting structures, and the separation structures comprise a plurality of insulating layers;

At the edge of the top surface of the transparent electrode, the separation structure comprises an end part facing to one side of the transparent electrode; forming at least one inward shrinking portion located at one side close to the substrate and at least one extending portion located above the inward shrinking portion at the end portion of the plurality of insulating layers along the thickness direction of the display panel; the length of the extending part is longer than that of the shrinking part in the extending part and the shrinking part which are adjacently arranged;

The display panel further comprises a plurality of organic film layers and second electrodes arranged on the upper layers of the organic film layers, wherein the second electrodes are public electrodes, and the organic film layers comprise a plurality of public organic film layers.

In a second aspect, a display device provided by an embodiment of the present utility model includes the display panel of the first aspect, where the display device is a near-eye display device.

The display panel provided by the embodiment of the utility model further comprises a plurality of pixel limiting structures and a plurality of separation structures, wherein the pixel limiting structures are positioned between two adjacent sub-pixels, so that the conditions of short circuit and the like between adjacent first electrodes can be avoided, and the structural stability of the display panel is ensured; the separation structure is used for defining an opening of the sub-pixel, and comprises a plurality of layers of insulating layers, wherein the end parts of the layers of insulating layers in the separation structure are provided with inward shrinking parts and extending parts along the thickness direction of the display panel, and the length of the extending parts is larger than that of the inward shrinking parts in the extending parts and the inward shrinking parts which are adjacently arranged. Namely, the insulation layer in the separation structure is adjusted, at least one organic film layer in the multi-layer organic film layers among different sub-pixels can be ensured to be disconnected at the end part of the separation structure, leakage current between two adjacent sub-pixels is blocked through the disconnected organic film layer, crosstalk between the two adjacent sub-pixels is eliminated, and the display effect of the display panel is ensured.

Drawings

In order to more clearly illustrate the technical solution of the exemplary embodiments of the present utility model, a brief description is given below of the drawings required for describing the embodiments. It is obvious that the drawings presented are only drawings of some of the embodiments of the utility model to be described, and not all the drawings, and that other drawings can be made according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of another display panel according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of area A of FIG. 1;

FIG. 4 is another enlarged schematic view of area A of FIG. 1;

FIG. 5 is an enlarged schematic view of region B of FIG. 2;

FIG. 6 is another enlarged schematic view of region B of FIG. 2;

FIG. 7 is a schematic view of a display panel according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of another display panel according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a pixel defining structure according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of another pixel defining structure according to an embodiment of the present utility model;

FIG. 11 is a schematic diagram of another pixel defining structure according to an embodiment of the present utility model;

FIG. 12 is a schematic view of another display panel according to an embodiment of the present utility model;

FIG. 13 is a schematic view of a first separation structure according to an embodiment of the present utility model;

FIG. 14 is a schematic view of a second separation structure according to an embodiment of the present utility model;

FIG. 15 is a schematic view of a third separation structure according to an embodiment of the present utility model;

FIG. 16 is a schematic view of another display panel according to an embodiment of the present utility model;

FIG. 17 is a schematic view of another first separation structure according to an embodiment of the present utility model;

FIG. 18 is a schematic view of another second separation structure according to an embodiment of the present utility model;

FIG. 19 is a schematic view of another third separation structure according to an embodiment of the present utility model;

FIG. 20 is a schematic view of a separation structure according to an embodiment of the present utility model;

FIG. 21 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 22 is a schematic structural diagram of an organic film layer according to an embodiment of the present utility model;

FIG. 23 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 24 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 25 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 26 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 27 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 28 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 29 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 30 is a schematic view of another separation structure according to an embodiment of the present utility model;

FIG. 31 is an enlarged schematic view of another sub-pixel according to an embodiment of the present utility model;

Fig. 32 is a schematic structural view of a display device according to an embodiment of the present utility model;

FIG. 33 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present utility model;

FIG. 34 is a schematic diagram of a display panel according to an embodiment of the present utility model;

FIG. 35 is a flowchart of another method for manufacturing a display panel according to an embodiment of the present utility model;

fig. 36 is a schematic diagram of another display panel manufacturing process according to an embodiment of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be fully described below by way of specific embodiments with reference to the accompanying drawings in the examples of the present utility model. It is apparent that the described embodiments are some, but not all, embodiments of the present utility model, and that all other embodiments, which a person of ordinary skill in the art would obtain without making inventive efforts, are within the scope of this utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those steps or elements expressly listed or inherent to such article or apparatus, but may include other elements not expressly listed or inherent to such article or apparatus.

Fig. 1 is a schematic structural view of a display panel according to an embodiment of the present utility model, fig. 2 is a schematic structural view of another display panel according to an embodiment of the present utility model, fig. 3 is an enlarged schematic view of a region a in fig. 1, fig. 4 is an enlarged schematic view of a region a in fig. 1, fig. 5 is an enlarged schematic view of a region B in fig. 2, and fig. 6 is an enlarged schematic view of a region B in fig. 2.

Referring to fig. 1 to 6, an embodiment of the present utility model provides a display panel 10, the display panel 10 includes a substrate 100 and a plurality of sub-pixels 200 located at one side of the substrate 100; the sub-pixel 200 includes a first electrode 210, the first electrode 210 including a bottom electrode 211 and a transparent electrode 212 which are stacked, the transparent electrode 212 being located at a side of the bottom electrode 211 away from the substrate 100; the display panel 10 includes a plurality of pixel defining structures 300 and a plurality of separation structures 400, the pixel defining structures 300 being positioned between adjacent two sub-pixels 200, the separation structures 400 being positioned at a side of the pixel defining structures 300 away from the substrate 100, the separation structures 400 including a plurality of insulating layers 410; at the top edge of the transparent electrode 212, the separation structure 400 includes an end portion (400A in the drawing) toward the transparent electrode 212 side; the multi-layered insulating layer 410 is formed with at least one inward shrinking portion 420 located at a side close to the substrate 100 and at least one extended portion 430 located above the inward shrinking portion 420 at an end portion in a thickness direction of the display panel 10; in the extension part 430 and the retraction part 420 which are adjacently disposed, the length of the extension part 430 is greater than the length of the retraction part 420; the display panel 10 further includes a plurality of organic film layers 500 and a second electrode 600 disposed on the organic film layers 410, the second electrode 600 being a common electrode, and the organic film layers 500 including a plurality of common organic film layers 510.

The display panel 10 includes a substrate 100 and a plurality of sub-pixels 200 disposed on one side of the substrate 100, wherein the sub-pixels 200 are electrically connected to a pixel driving circuit 110 disposed on the substrate 100, and the pixel driving circuit 110 is configured to provide display signals for the sub-pixels, so as to achieve the light emitting and display effects of the sub-pixels 200. Further, the pixel driving circuit 110 may include at least one transistor, and a specific embodiment of the pixel driving circuit 110 may be set by a person skilled in the art according to practical situations, and is not limited herein, and the pixel driving circuit 400 may include "4T1C", "5T2C", etc., where "4T1C" refers to a pixel driving circuit including 4 thin film transistors (T) and 2 capacitors (C), other "5T2C", etc.

Further, referring to fig. 1 and 2, the sub-pixel 200 includes a first electrode 210, and the first electrode 210 includes a bottom electrode 211 and a transparent electrode 212, where the bottom electrode 211 can reflect light to reflect light emitted from the organic film layer to the display side for emitting, and the transparent electrode 212 can be made of indium tin oxide, and the embodiment of the utility model is not limited thereto specifically.

Further, fig. 7 is a schematic light-emitting diagram of a display panel according to an embodiment of the present utility model, referring to fig. 1 to 7, a plurality of sub-pixels 200 includes a first sub-pixel 200A, a second sub-pixel 200B and a third sub-pixel 200C for displaying different colors; the transparent electrode 212 includes a first transparent electrode 212A disposed on the bottom electrode 211 of the first sub-pixel 200A, a second transparent electrode 212B disposed on the bottom electrode 211 of the second sub-pixel 200B, and a third transparent electrode 212C disposed on the bottom electrode 211 of the third sub-pixel 200C; the first transparent electrode 212A, the second transparent electrode 212B, and the third transparent electrode 212C are different in thickness.

Further, in the sub-pixel 200, light may be reflected between the bottom electrode 211 of the first electrode 210 and the second electrode 600 a plurality of times, and the transparent electrode 212 is a resonance portion for resonating a target wavelength. Meanwhile, referring to fig. 1 and 2, the plurality of sub-pixels 200 may include a first sub-pixel 200A, a second sub-pixel 200B, and a third sub-pixel 200C displaying different colors, such as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, in which the different colors of light have different wavelengths. Further, the phase shift generated by the reflection of the light emitted from the organic film 500 between the bottom electrode 211 and the second electrode 600 is Φradian, the optical path of the resonant portion is L, that is, the transmission distance of the light between the bottom electrode 211 and the second electrode 600 along the thickness direction of the display panel 10 is L, that is, the arrow in fig. 7 represents the light, the movement path of the arrow represents the optical path, and if the wavelength of the target light is λ, the optical path of the resonant portion should satisfy the following formula: 2L/λ+Φ/2pi=m (m is an integer). Further, the larger the m value is, the color purity of the light outputted from the resonance portion can be improved, but a decrease in display luminance and an increase in dependence of viewing angle are caused. In order to ensure that the display effect of the plurality of sub-pixels 200 in the display panel 10 is balanced, the m values of the different sub-pixels 200 can be adjusted to be similar or identical, and then the thickness of the transparent electrode 212 of the sub-pixel 200 with different colors can be adjusted based on different wavelengths λ, that is, the optical path L in the above formula is adjusted, so that the effect of outputting light with different wavelengths λ is ensured to be similar, that is, the light-emitting brightness and the color purity of the sub-pixel 200 with different colors are similar.

Referring to fig. 1 and 2, the first, second and third transparent electrodes 212A, 212B and 212C represent the transparent electrodes 212 in the sub-pixels 200 of different colors, and there is a difference in thickness of the first, second and third transparent electrodes 212A, 212B and 212C, and a stable and uniform display effect of the display panel 10 is achieved by adjusting the thickness of the transparent electrodes 212.

Alternatively, as shown with continued reference to fig. 1 and 2, the sub-pixel 200 further includes a second electrode 600 and an organic film layer 500, wherein the second electrode 600 may be a common electrode, and the organic film layer 500 is located between the first electrode 210 and the second electrode 600. Further, the organic film 500 includes a common organic film 510, such as a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and a resistance injection layer, which are stacked, and the specific film configuration of the common organic film 510 is not limited in the embodiment of the present utility model.

Further, the display panel 10 further includes a plurality of pixel defining structures 300 and a plurality of separating structures 400, as shown with reference to fig. 1 and 2, the pixel defining structures 300 are disposed between adjacent two of the first electrodes 210, the separating structures 400 are located at a side of the pixel defining structures 300 away from the substrate 100, and the separating structures 400 cover the pixel defining structures 300. Further, as shown with reference to fig. 3 to 6, at the edge of the top surface of the transparent electrode 212, the separation structure 400 includes an end portion facing the side of the transparent electrode 212, as shown with reference to the area 400A. It should be noted that, reference to "top" and "up" throughout refer to a direction of the separation structure 400 away from the side of the substrate 100, that is, a direction in which the substrate 100 points to the separation structure 400. In other words, the end of the separation structure 400 overlaps the edge of the top surface of the transparent electrode 212, i.e., both sides of the separation structure 400 cover part of the edge of the transparent electrode 212, i.e., the separation structure 400 may define the display opening condition of the sub-pixel 200.

Further, referring to fig. 1 to 6, the separation structure 400 includes a plurality of insulating layers 410 that are stacked, and by adjusting the positions of the end portions of the insulating layers 410, it is achieved that one side of the separation structure 400, which covers the transparent electrode 212, is in a non-flat shape, and further it is possible to break at least part of the common organic film 510 laid in the whole layer in the sub-pixel 200 at the end portion of the separation structure 400, so that leakage current transmission of holes or electrons between different sub-pixels 200 is avoided, and further, crosstalk between different sub-pixels 200 is avoided, and further, the display effect of the display panel 10 is ensured. Specifically, referring to fig. 3 to 6, the multi-layer insulating layer 410 has the shrinking portion 420 and the extending portion 430 at the end portions, and the length of the extending portion 430 is greater than that of the adjacent shrinking portion 420, that is, the end portions of the separation structure 400 near the first electrode 210 are staggered in length to form a non-flat shape, so that at least part of the organic film layer is disconnected at the position of the shrinking portion 420, and the leakage current transmission path of holes or electrons is blocked, so that leakage currents between different sub-pixels are blocked, the crosstalk problem between different sub-pixels is avoided, and the display effect of the display panel is improved.

In summary, according to the display panel provided by the embodiment of the utility model, the thicknesses of the transparent electrodes in the sub-pixels with different colors are different, and the light-emitting color purity and the display balance of the sub-pixels with different colors can be adjusted through the thicknesses of the transparent electrodes, so that the fine display effect of the display panel is ensured. Meanwhile, the separation structure comprises an insulating layer which is formed by laminating a plurality of layers, an extending part and a shrinking part are arranged at the end part of the insulating layer, namely, the end part of the separation structure, which is close to the first electrode, is arranged in a staggered mode, meanwhile, part of common organic film layers in the organic film layers can be disconnected at the shrinking part, so that the leakage current transmission path of holes or electrons is blocked, leakage currents among different sub-pixels are blocked, the crosstalk problem among different sub-pixels is avoided, and the display effect of the display panel is further ensured.

With continued reference to fig. 3-6, the extension 430 includes an upper surface 430A and a lower surface 430B, the length of the upper surface 430A is less than the length of the lower surface 430B, and an included angle a formed by a side 430C between the upper surface 430A and the lower surface 430B is less than 60 degrees.

Further, the number of the insulating layers 410 in the separation structure 400 is varied, and the example of the separation structure 400 including four insulating layers 410 is described with reference to fig. 3 and 4, the example of the separation structure 400 including five insulating layers 410 is described with reference to fig. 5 and 6, and the number of the insulating layers 410 in the separation structure 400 is not particularly limited in the embodiment of the present utility model.

Further, the extension 430 in the insulating layer 410 includes an upper surface 430A, a lower surface 430B, and a side 430C between the upper surface 430A and the lower surface 430B. Referring to fig. 3-6, the upper surface 430A of the extension 430 has a length less than the length of the lower surface 430B, i.e., the extension 430 is in a "wedge-shaped" configuration. Specifically, the included angle a formed by the side surface 430C between the upper surface 430A and the lower surface 430B is smaller than 60 degrees, i.e. the end of the extension portion 430 is relatively gentle, so that the organic film 500, the second electrode 600, etc. are formed on the separation structure 400 later, and the structural stability of the whole display panel 10 is ensured.

With continued reference to fig. 3 and 4, the separation structure 400 includes at least four insulating layers 410 stacked in sequence, where any three adjacent insulating layers 410 include an i-th insulating layer (i shown in the figure), an i+1-th insulating layer (i+1 shown in the figure), and an i+2-th insulating layer (i+2 shown in the figure) stacked in sequence, where the ends of the i-th insulating layer and the i+2-th insulating layer are both extension portions 430, and the ends of the i+1-th insulating layer are retraction portions 420; or the ends of the i insulating layer and the i+2 insulating layer are the inward shrinking part 420, the end of the i+1 insulating layer is the extension part 430, and i is a positive integer.

As shown in fig. 3 and 4, the adjacent three insulating layers 410 are an i-th insulating layer, an i+1-th insulating layer, and an i+2-th insulating layer, respectively.

Specifically, referring to fig. 3, the end of the insulating layer 410 where the i-th insulating layer and the i+2-th insulating layer are located is an extension 430, and the end of the insulating layer 410 where the i+1-th insulating layer is located is a retraction 420. I.e., the end extensions of adjacent insulating layers 410 are different. In other words, the i+1-th insulating layer is in a contracted state compared to the end of the i-th insulating layer, while the i+1-th insulating layer is also in a contracted state compared to the end of the i+2-th insulating layer, i.e., the end of the i+1-th insulating layer is in a contracted state compared to the adjacent two insulating layers 410.

Alternatively, referring to fig. 4, the end of the insulating layer 410 where the i-th insulating layer and the i+2-th insulating layer are located is a tapered portion 420, and the end of the insulating layer 410 where the i+1-th insulating layer is located is an extended portion 430. I.e., the end extensions of adjacent insulating layers 410 are different. In other words, the i+1-th insulating layer is in an extended state compared to the i-th insulating layer, while the i+1-th insulating layer is also in an extended state compared to the i+2-th insulating layer, i.e., the i+1-th insulating layer is in an extended state compared to the adjacent two insulating layers 410.

In general, the adjacent insulating layers 410 have different stretching states, so that the shape of the separating structure 400 covering the transparent electrode 212 is a non-flat shape. In other words, in any adjacent three insulating layers 410, the relative expansion and contraction conditions of the insulating layer 410 located in the middle and any adjacent insulating layer 410 are different, that is, the end portions of the separation structures close to the first electrode are arranged in a staggered manner, meanwhile, part of the common organic film layer in the organic film layer can be disconnected at the inner contraction portion to block the leakage current transmission path of holes or electrons, block the leakage current between different sub-pixels, avoid the crosstalk problem between different sub-pixels, and further ensure the display effect of the display panel 10.

With continued reference to fig. 3 and 4, the separation structure 400 includes a first insulating layer 411, a second insulating layer 412, a third insulating layer 413, and a fourth insulating layer 414 that are sequentially stacked, wherein an end of the first insulating layer 411 and an end of the third insulating layer 413 are the tapered portions 420, and an end of the second insulating layer 412 and an end of the fourth insulating layer 414 are the extended portions 430.

In this example, the separation structure 400 includes at least four insulating layers 410 stacked in sequence, that is, the separation structure 400 includes a first insulating layer 411, a second insulating layer 412, a third insulating layer 413, and a fourth insulating layer 414. Referring to fig. 3 and 4, the end of the first insulating layer 411 and the end of the third insulating layer 413 are the shrinking portions 420, the end of the second insulating layer 412 and the end of the fourth insulating layer 414 are the extending portions 430, that is, the difference exists between the stretching conditions of any two adjacent insulating layers 410 at the end, that is, the unevenness of the separating structure 400 at the end is ensured, so that part of the common organic film layer in the organic film layer can be disconnected at the shrinking portions, further, the hole or electron leakage current transmission paths are blocked, the leakage current between different sub-pixels is blocked, the crosstalk problem between different sub-pixels is avoided, and the display effect of the display panel 10 is further ensured.

With continued reference to fig. 3 and 4, the length of the necked-in portion 420 of the first insulating layer 411 is greater than the length of the necked-in portion 420 of the third insulating layer 413; the length of the extension 430 of the second insulating layer 412 is greater than the length of the extension 430 of the fourth insulating layer 414.

Specifically, as shown in fig. 3 and 4, for the first insulating layer 411 and the third insulating layer 413, the end portions thereof are the tapered portions 420, and the first insulating layer 411 is closer to the substrate 100 side than the third insulating layer 413, while the length of the tapered portion 420 of the first insulating layer 411 is greater than the length of the tapered portion 420 of the third insulating layer 413, referring to L3 smaller than L1 in fig. 3. For the second insulating layer 412 and the fourth insulating layer 414, the end portions thereof are the extension portions 430, and the second insulating layer 412 is closer to the substrate 100 side than the fourth insulating layer 414, while the length of the extension portion 430 of the second insulating layer 412 is greater than the length of the extension portion 430 of the fourth insulating layer 414, referring to L4 less than L2 in fig. 4. Through carrying out more careful length division to first insulating layer 411, second insulating layer 412, third insulating layer 413 and fourth insulating layer 414, further guarantee the unevenness of separation structure 400 at the tip, more effectually avoid there is the interference in luminous effect between the different sub-pixels 200, further guarantee the display effect of display panel 10.

With continued reference to fig. 3 and 4, the first insulating layer 411 and the third insulating layer 413 are of a first material, the second insulating layer 412 and the fourth insulating layer 414 are of a second material, and the first material and the second material are different.

Illustratively, the same etching liquid may be used for etching during the preparation of the insulating layer 410 in the separation structure 400.

Specifically, the ends of the first insulating layer 411 and the third insulating layer 413 are the shrinking portions 420, and the first insulating layer 411 and the third insulating layer 413 can be made of the same material, so that the first insulating layer 411 and the third insulating layer 413 have the same or similar etching rates, and the difference in length between the first insulating layer 411 and the third insulating layer 413 is only related to the contact time of the etching liquid, so that the length of the first insulating layer 411 and the length of the third insulating layer 413 are controllable. The end portions of the second insulating layer 412 and the fourth insulating layer 414 are the extension portions 430, and the second insulating layer 412 and the fourth insulating layer 414 can be made of the same material, so that the second insulating layer 412 and the fourth insulating layer 414 have the same or similar etching rates, and the difference in length between the second insulating layer 412 and the fourth insulating layer 414 is only related to the contact time of the etching liquid, so that the length of the second insulating layer 412 and the length of the fourth insulating layer 414 are controllable. Further, the same material is used to form the tapered portion 420 and the same material is used to form the extended portion 430, so that the manufacturing process of the separation structure 400 is relatively simple.

Alternatively, the thicknesses of the first insulating layer 411 and the third insulating layer 413 are 10 to 100nm, and the thicknesses of the second insulating layer 412 and the fourth insulating layer 414 are 20 to 100nm.

The thicknesses of the first insulating layer 411 and the third insulating layer 413 are illustratively 10 to 100nm, and may be illustratively 10nm, 15nm, 50nm, 70nm, 100nm, or the like, and specific values of the thicknesses are not limited in the embodiment of the present utility model. The thickness of the second insulating layer 412 and the fourth insulating layer 414 is 20 to 100nm, and may be, for example, 20nm, 25nm, 50nm, 70nm, 100nm, or the like, and specific values of the thickness are not limited in the embodiment of the present utility model.

It will be appreciated that the thickness of each insulating layer may be determined by the thickness of the common organic film layer that is required to be broken at the insulating layer, the distance from the common organic film layer to the first electrode, the distance from the common organic film layer to the second electrode, and the like. For example, the thickness of the common organic film layer to be broken is thicker, the corresponding insulation layer containing the shrinking portion can be arranged thicker, and if the thickness of the common organic film layer to be broken is thinner, the corresponding insulation layer containing the shrinking portion can be arranged smaller; the distance from the common organic film layer to the first electrode is larger, namely the thickness of the common organic film layer to be disconnected and the thickness of all the organic film layers below the common organic film layer are larger, the corresponding insulating layer can be arranged to be thicker, and the thickness of the common organic film layer to be disconnected and the thickness of all the organic film layers below the common organic film layer to be disconnected are smaller, and the corresponding insulating layer can be arranged to be thinner. In addition, the insulating layer is not too thick while guaranteeing the disconnection of the common organic film layer, and the phenomenon that the disconnection or the connection part is too thin is avoided when the second electrode is formed. By reasonably setting the thicknesses of the first insulating layer 411, the second insulating layer 412, the third insulating layer 413 and the fourth insulating layer 414, on the one hand, disconnection of the organic film layer at the retracted portion is ensured, and on the other hand, continuous and uniform film formation of the second electrode is ensured.

With continued reference to fig. 5 and 6, the separation structure 400 includes a first insulating layer 411, a second insulating layer 412, a third insulating layer 413, a fourth insulating layer 414, and a fifth insulating layer 415 that are sequentially stacked, an end of the first insulating layer 411, an end of the third insulating layer 413, and an end of the fifth insulating layer 415 are extension portions 430, and an end of the second insulating layer 412 and an end of the fourth insulating layer 414 are tapered portions 420.

In this example, the separation structure 400 includes at least five insulating layers 410 stacked in order, that is, the separation structure 400 includes a first insulating layer 411, a second insulating layer 412, a third insulating layer 413, a fourth insulating layer 414, and a fifth insulating layer 415. Referring to fig. 5 and 6, the end of the first insulating layer 411, the end of the third insulating layer 413 and the end of the fifth insulating layer 415 are extension portions 430, the end of the second insulating layer 412 and the end of the fourth insulating layer 414 are shrinking portions 420, that is, the difference exists between the stretching conditions of any two adjacent insulating layers 410 at the end, that is, the unevenness of the separation structure 400 at the end is ensured, so that part of the common organic film layer in the organic film layer can be disconnected at the shrinking portions, and further, the leakage current transmission path of holes or electrons is blocked, the leakage current between different sub-pixels is blocked, and the display crosstalk problem between different sub-pixels is avoided. Based on the above embodiment, the end of the insulating layer 410 near the substrate 100 is the extension portion 430, and compared with the end of the insulating layer 410 near the substrate 100 is the retracted portion 420, the separation structure 400 is more stable, and the risk of peeling and warping of the separation structure 400 on the surface of the pixel defining structure can be reduced.

With continued reference to fig. 5 and 6, the length of the extension 430 of the first insulating layer 411 is greater than the length of the extension 430 of the third insulating layer 413, and the length of the extension 430 of the third insulating layer 413 is greater than the length of the extension 430 of the fifth insulating layer 415; the length of the necked-in portion 420 of the second insulating layer 412 is greater than the length of the necked-in portion 420 of the fourth insulating layer 414.

Specifically, as shown with reference to fig. 5 and 6, for the first insulating layer 411, the third insulating layer 413, and the fifth insulating layer 415, the end portions thereof are the extension portions 430, and the first insulating layer 411 is closer to the substrate 100 side than the third insulating layer 413, the fifth insulating layer 415 is farther from the substrate 100 side than the third insulating layer 413, while the length of the extension portion 430 of the first insulating layer 411 is greater than the length of the extension portion 430 of the third insulating layer 413, the length of the extension portion 430 of the third insulating layer 413 is greater than the length of the extension portion 430 of the fifth insulating layer 415, and L1 is greater than L3, and L3 is greater than L5 with reference to fig. 5. For both the second insulating layer 412 and the fourth insulating layer 414, the end portions thereof are the tapered portions 420, and the second insulating layer 412 is closer to the substrate 100 side than the fourth insulating layer 414, while the length of the tapered portions 420 of the second insulating layer 412 is greater than the length of the tapered portions 420 of the fourth insulating layer 414, referring to L2 greater than L4 in fig. 6. Through carrying out more careful length division to first insulating layer 411, second insulating layer 412, third insulating layer 413, fourth insulating layer 414 and fifth insulating layer 415, further guarantee separation structure 400 at the unevenness of tip, more effectually avoid having crosstalk in luminous effect between the different sub-pixels 200, further guarantee display panel 10's display effect.

With continued reference to fig. 5 and 6, the first insulating layer 411, the third insulating layer 415, and the fifth insulating layer 415 are of a first material, the second insulating layer 412, and the fourth insulating layer 414 are of a second material, and the first material and the second material are different.

The end portions of the first insulating layer 411, the third insulating layer 413 and the fifth insulating layer 415 are all the extending portions 430, and the first insulating layer 411, the third insulating layer 413 and the fifth insulating layer 415 can be made of the same material, so that the first insulating layer 411, the third insulating layer 413 and the fifth insulating layer 415 have the same or similar etching rates, and the difference of the lengths of the first insulating layer 411, the third insulating layer 413 and the fifth insulating layer 415 is only related to the contact time with the etching liquid, so that the lengths of the first insulating layer 411, the third insulating layer 413 and the fifth insulating layer 415 are controllable. The end portions of the second insulating layer 412 and the fourth insulating layer 414 are the shrinking portions 420, and the second insulating layer 412 and the fourth insulating layer 414 can be made of the same material, so that the second insulating layer 412 and the fourth insulating layer 414 have the same or similar etching rates, and the difference of the lengths of the second insulating layer 412 and the fourth insulating layer 414 is only related to the contact time of etching liquid, so that the controllable lengths of the second insulating layer 412 and the fourth insulating layer 414 are ensured. Further, the same material is used to form the tapered portion 420 and the same material is used to form the extended portion 430, so that the manufacturing process of the separation structure 400 is relatively simple.

Alternatively, the thicknesses of the first, third, and fifth insulating layers 411, 413, and 415 are 20 to 100nm, and the thicknesses of the second and fourth insulating layers 412 and 414 are 10 to 100nm.

The thicknesses of the first insulating layer 411, the third insulating layer 413, and the fifth insulating layer 415 are illustratively 20 to 100nm, and may be illustratively 20nm, 25nm, 50nm, 70nm, 100nm, or the like, and specific values of the thickness differences are not limited in the embodiments of the present utility model. The thickness of the second insulating layer 412 and the fourth insulating layer 414 is 10 to 100nm, and may be 10nm, 15nm, 50nm, 70nm, 100nm, or the like, for example, and specific values of the thickness difference are not limited in the embodiment of the present utility model. It will be appreciated that the thickness of each insulating layer may be determined by the thickness of the common organic film layer that is required to be broken at the insulating layer, the distance from the common organic film layer to the first electrode, the distance from the common organic film layer to the second electrode, and the like. By reasonably setting the thicknesses of the first insulating layer 411, the second insulating layer 412, the third insulating layer 413, the fourth insulating layer 414 and the fifth insulating layer 415, on the one hand, the disconnection of the common organic film layer at the retracted portion is ensured, and on the other hand, the continuous and uniform state of the second electrode film formation is ensured.

Further, referring to fig. 1 to 6, the material of the pixel defining structure 300 is silicon oxide or silicon nitride, which is the same as the insulating material in the conventional display panel, so as to ensure that the manufacturing process of the pixel defining structure 300 is simple.

Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present utility model, referring to fig. 8, the transparent electrode 212 includes a transparent electrode side surface and a transparent electrode top surface, a first overlapping area S1 exists between the separation structure 400 and the transparent electrode side surface, and a second overlapping area S2 exists between the separation structure 400 and an edge of the transparent electrode top surface; the first overlapping areas S1 of the plurality of separation structures 400 shown in fig. 8 are not exactly the same, and the second overlapping areas S2 of the plurality of separation structures 400 are the same.

As shown in fig. 8, any of the separation structures 400 includes a second overlap area S2 covering the edge of the top surface of the transparent electrode, and includes a first overlap area S1 covering the side surface of the transparent electrode. Specifically, the second overlapping areas S2 of the plurality of separation structures 400 are the same, so that the effect of the separation structures 400 on the openings of the sub-pixels 200 is consistent, in other words, the coverage conditions of the two ends of the separation structures 400 on the transparent electrodes 212 on the two sides are the same, the light emitting effect of different colors is ensured, and the light emitting display effect of the display panel 10 is further ensured. Meanwhile, the thicknesses of the transparent electrodes 212 of the sub-pixels 200 based on different colors are different, that is, when the separation structure 400 contacts the sides of the transparent electrodes, if the transparent electrodes 212 are thicker, the first overlapping area S1 is larger, and thus the first overlapping area S1 may be different according to the pixels 200. By flexible regulation of the separation structure 400, the display effect of the display panel 10 is ensured from a plurality of angles.

With continued reference to fig. 8, in the thickness direction of the display panel 10, the adjacent bottom electrodes 211 have a first center P1 therebetween, the separation structure 400 has a second center P2, and the first center P1 and the second center P2 do not coincide.

Specifically, both ends of the separation structure 400 cover the top surface edge regions of the transparent electrodes 212 of the adjacent two first electrodes 210, respectively, and since the thicknesses of the transparent electrodes 212 of the sub-pixels 200 of different colors are different, that is, the separation structure 400 overlaps at least one side surface of the transparent electrode. Further, to ensure that the openings of the sub-pixels 200 are consistent, the areas of the top edges of the transparent electrodes 212 covered by the separation structure 400 are the same, and in combination with the case that the separation structure 400 covers the sides of the transparent electrodes, the second center P2 of the separation structure 400 is different from the first center P1 between the adjacent bottom electrodes 211, and it should be noted that, in fig. 8, the first center P1 and the second center P2 are shown as straight lines where the centers are located. For example, the second center P2 may be closer to the transparent electrode 212 side having a larger thickness, i.e., to the first electrode 210 side having a larger overall thickness.

For example, as shown in fig. 8, the first center P1 between adjacent bottom electrodes 211 and the center of the pixel defining structure 300 may coincide, i.e., the center of the pixel defining structure 300 does not overlap with the center of the separation structure 400. Specifically, in the preparation process of the pixel defining structure 300 and the separating structure 400, different masks are used for etching, and the center of the mask of the separating structure 400 is not coincident with the center of the mask of the pixel defining structure 300, which is not specifically limited in the embodiment of the present utility model.

Fig. 9 is a schematic structural view of a pixel defining structure according to an embodiment of the present utility model, and referring to fig. 9, among a plurality of first electrodes 210, a first electrode 210 with a minimum thickness has a thickness D1; the thickness of any two pixel defining structures 300 is the same, and the thickness of the pixel defining structure 300 is d1; wherein D1-D1 is more than or equal to 0 and less than or equal to 50nm.

Specifically, the thickness of the transparent electrode 212 varies among the first electrodes 210 of the sub-pixels 200 with different colors, which results in a variation in the overall thickness of the first electrodes 210. Specifically, the thickness of the first electrode 210 with the smallest thickness is D1, and the thickness of the pixel defining structure 300 is D1, and referring to fig. 9, the thicknesses of any two pixel defining structures 300 are the same, i.e., the thicknesses of D1. Further, the thickness difference between the first electrode 210 and the pixel defining structure 300 is less than 50nm, i.e. 0.ltoreq.d1-d1.ltoreq.50 nm, and exemplary thickness differences may be 0nm, 10nm, 15nm, 50nm, or the like, and specific values of the thickness differences are not limited in the embodiments of the present utility model. Setting the thickness of any one of the pixel defining structures 300 to be the same can simplify the manufacturing process of the pixel defining structure 300 and reduce the process cost.

Fig. 10 is a schematic structural view of another pixel defining structure according to an embodiment of the present utility model, and referring to fig. 10, in any two adjacent first electrodes 210, a first electrode 210 with a smaller thickness has a thickness D2; the thickness of the pixel defining structure 300 between the adjacent two first electrodes 210 is d2; wherein D2-D2 is more than or equal to 0 and less than or equal to 50nm.

Further, one of the two adjacent first electrodes 210 having a relatively smaller thickness and the other having a larger thickness will have a thickness D2 in the two first electrodes 210, referring to the region C in FIG. 10, and the pixel in the two first electrodes 210 defines the thickness D2 of the structure 300 to satisfy 0.ltoreq.D2-d2.ltoreq.50 nm. Referring to the region D in FIG. 10, of the two first electrodes 210, the first electrode having a smaller thickness has a thickness D2, and the pixels in the two first electrodes 210 define the thickness D2 of the structure 300, satisfying 0.ltoreq.D2-d2.ltoreq.50 nm.

I.e. the pixel defining structure 300 is similar to the thickness of the smaller of the adjacent two first electrodes 210. For example, the thickness difference between the pixel defining structure 300 and the first electrode 210 having a smaller thickness may be 0nm, 10nm, 15nm, 50nm, or the like, and specific values of the thickness difference are not limited in the embodiment of the present utility model. The thicknesses of the pixel defining structures 300 are differently set, and the thickness variation is adjusted according to the thickness of the adjacent first electrode 210, so that the step difference between the pixel defining structure and the adjacent first electrode is small, which is beneficial to forming a separation structure thereon subsequently.

Fig. 11 is a schematic structural view of another pixel defining structure according to an embodiment of the present utility model, and referring to fig. 11, in any two adjacent first electrodes 210, a thickness of the first electrode 210 with a larger thickness is D3; the thickness of the pixel defining structure 300 between the adjacent two first electrodes 210 is d3; wherein, D3-D3 is more than or equal to 0 and less than or equal to 50nm.

Further, among the two adjacent first electrodes 210, there may be a first electrode 210 having a larger thickness, referring to the region D in fig. 11, the thickness of the first electrode 210 having a larger thickness is D3, and the pixels in the two first electrodes 210 define the thickness D3 of the structure 300 while satisfying 0.ltoreq.d3—d3.ltoreq.50 nm. Referring to the E region in FIG. 10, of the two first electrodes 210, the first electrode having a larger thickness has a thickness D3, and the pixels in the two first electrodes 210 define the thickness D3 of the structure 300 while satisfying 0.ltoreq.D3-d3.ltoreq.50 nm.

I.e. the pixel defining structure 300 is similar to the thickness of the adjacent and thicker first electrode 210. For example, the thickness difference between the pixel defining structure 300 and the first electrode 210 having a larger thickness may be 0nm, 10nm, 15nm, 50nm, or the like, and specific values of the thickness difference are not limited in the embodiment of the present utility model. The thicknesses of the pixel defining structures 300 are differently set, and the thickness variation is adjusted according to the thickness of the adjacent first electrode 210, so that the step difference between the pixel defining structure and the adjacent first electrode is small, which is beneficial to forming a separation structure thereon subsequently.

Fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present utility model, and referring to fig. 12, a thickness of a first transparent electrode 212A is smaller than a thickness of a second transparent electrode 212B, and the thickness of the second transparent electrode 212B is smaller than a thickness of a third transparent electrode 212C; in the first, second, and third sub-pixels 200A, 200B, and 200C, the difference between the thickness of the pixel defining structure 300 and the thickness of the first electrode 210 of the first sub-pixel 200A is minimal.

As shown in fig. 12, the sub-pixels 200 include a first sub-pixel 200A, a second sub-pixel 200B, and a third sub-pixel 200C of different colors, and the thicknesses of the transparent electrodes 212 in the sub-pixels 200 of different colors are different. Specifically, the thickness of the first transparent electrode 212A is smaller than the thickness of the second transparent electrode 212B, and the thickness of the second transparent electrode 212B is smaller than the thickness of the third transparent electrode 212C. Further, there is a pixel defining structure 300 between the first electrodes 210 of adjacent sub-pixels 200, wherein the difference between the thickness of the pixel defining structure 300 and the thickness of the first sub-pixel 200A is the smallest, i.e. the thickness of the pixel defining structure 300 in the display panel 10 has uniformity, which is similar to or the same as the thickness of the first sub-pixel 200A. Illustratively, referring to FIG. 12, the thickness D1 of the first transparent electrode 212A is minimal compared to the other transparent electrodes 212, the thickness difference between the first transparent electrode 212A and the pixel defining structure 300 is e1, the thickness difference between the second transparent electrode 212B and the pixel defining structure 300 is e2, the thickness difference between the third transparent electrode 212C and the pixel defining structure 300 is e3, and e1 < e2 < e3. And the thickness d1 of any one of the pixel defining structures 300 is set to be the same, the manufacturing process of the pixel defining structure 300 can be simplified, and the process cost can be reduced.

With continued reference to fig. 12, the separation structure 400 between the first sub-pixel 200A and the second sub-pixel 200B is a first separation structure 421, the separation structure between the second sub-pixel 200B and the third sub-pixel 200C is a second separation structure 422, and the separation structure between the third sub-pixel 200C and the first sub-pixel 200A is a third separation structure 423; the first, second and third separation structures 421, 422 and 423 are different in shape.

Specifically, the separation structure 400 includes a first separation structure 421, a second separation structure 422, and a third separation structure 423, where two ends of the first separation structure 421 overlap with a top surface edge of the first transparent electrode 212A and a top surface edge of the second transparent electrode 212B, respectively, two ends of the second separation structure 422 overlap with a top surface edge of the second transparent electrode 212B and a top surface edge of the third transparent electrode 212C, respectively, and two ends of the third separation structure 423 overlap with a top surface edge of the third transparent electrode 212C and a top surface edge of the first transparent electrode 212A, respectively. Further, since the thicknesses of the transparent electrodes 212 in the first sub-pixel 200A, the second sub-pixel 200B and the third sub-pixel 200C are different, the structures of the first separation structure 421, the second separation structure 422 and the third separation structure 423 covering the sides of the transparent electrodes are different, and the shapes of the first separation structure 421, the second separation structure 422 and the third separation structure 423 are different.

Fig. 13 is a schematic structural view of a first separation structure according to an embodiment of the present utility model, fig. 14 is a schematic structural view of a second separation structure according to an embodiment of the present utility model, and fig. 15 is a schematic structural view of a third separation structure according to an embodiment of the present utility model. Referring to fig. 13 to 15, the second transparent electrode 212B includes an upper portion 213 higher than the pixel defining structure 300, and the third transparent electrode 212C includes an upper portion 214 higher than the pixel defining structure 300; the first separation structure 421 including a first portion 421A covering an edge of a top surface of the first transparent electrode 212A, a second portion 421B covering a top surface of the pixel defining structure 300, a third portion 421C covering an upper side surface of the second transparent electrode 212B, and a fourth portion 421D covering an edge of a top surface of the second transparent electrode 212B, the first portion 421A, the second portion 421B, the third portion 421C, and the fourth portion 421D being sequentially connected; a second separation structure 422 including a fifth portion 422A covering the edge of the top surface of the second transparent electrode 212B, a sixth portion 422B covering the side surface of the upper portion of the second transparent electrode 212B, a seventh portion 422C covering the top surface of the pixel defining structure 300, an eighth portion 422D covering the side surface of the upper portion of the third transparent electrode 212C, a ninth portion 422E covering the edge of the top surface of the third transparent electrode 212C, the fifth portion 422A, the sixth portion 422B, the seventh portion 422C, the eighth portion 422D, and the ninth portion 422E being sequentially connected; the third separation structure 423 includes a tenth portion 423A covering the top edge of the third transparent electrode 212C, an eleventh portion 423B covering the upper side of the third transparent electrode 212C, a twelfth portion 423C covering the top of the pixel defining structure 300, a thirteenth portion 423D covering the top edge of the first transparent electrode 212A, and the tenth portion 423A, the eleventh portion 423B, the twelfth portion 423C, and the thirteenth portion 423D are sequentially connected.

Specifically, referring to fig. 13 and 15, the second transparent electrode 212B includes an upper portion 213 higher than the pixel defining structure 300, and the third transparent electrode 212C includes an upper portion 214 higher than the pixel defining structure 300, that is, there is a certain thickness difference between the second transparent electrode 212B, the third transparent electrode 212C, and the pixel defining structure 300.

Further, referring to fig. 13, the first separation structure 421 includes a first portion 421A, a second portion 421B, a third portion 421C, and a fourth portion 421D, which are sequentially connected. Specifically, the first portion 421A overlaps the top edge of the first transparent electrode 212A, the second portion 421B overlaps the top edge of the pixel defining structure 300, the third portion 421C overlaps the upper side of the second transparent electrode 212B, and the fourth portion 421D overlaps the top edge of the second transparent electrode 212B.

Referring to fig. 14, the second separation structure 422 includes a fifth portion 422A, a sixth portion 422B, a seventh portion 422C, an eighth portion 422D, and a ninth portion 422E, which are sequentially connected. Specifically, the fifth portion 422A overlaps the top edge of the second transparent electrode 212B, the sixth portion 422B overlaps the side of the upper portion 213 of the second transparent electrode 212B, the seventh portion 422C overlaps the top surface of the pixel defining structure 300, the eighth portion 422D overlaps the side of the upper portion 214 of the third transparent electrode 212C, and the ninth portion 422E overlaps the top edge of the third transparent electrode 212C.

As shown with reference to fig. 15, the third separating structure 423 includes a tenth portion 423A, an eleventh portion 423B, a twelfth portion 423C, and a thirteenth portion 423D that are sequentially connected. Specifically, the tenth portion 423A overlaps the top edge of the third transparent electrode 212C, the eleventh portion 423B overlaps the side of the upper portion 214 of the third transparent electrode 212C, the twelfth portion 423C overlaps the top surface of the pixel defining structure 300, and the thirteenth portion 423D overlaps the top edge of the first transparent electrode 212A.

Through the reasonable shape that sets up each separate structure and transparent electrode's thickness matching, realize above-mentioned each separate structure's the different implementation scheme of shape, guarantee each separate structure adaptation first electrode thickness different sub-pixel structure, to the good coverage of pixel limit structure and transparent electrode, guarantee display panel's stable in structure.

With continued reference to fig. 13 and 14, the third portion 421C and the sixth portion 422B are inclined toward the second transparent electrode 212B side, respectively, and have an inclination of 60 degrees or less with respect to the substrate 100 at an angle B.

Specifically, referring to fig. 13, the third portion 421C is inclined toward the second transparent electrode 212B, and the included angle B between the third portion 421C and the substrate 100 is less than or equal to 60 degrees, i.e., the inclination of the third portion 421C toward the second transparent electrode 212B is relatively gentle, so as to ensure stable preparation of the subsequent film layer. Further, referring to fig. 14, the sixth portion 422B is inclined to the side of the second transparent electrode 212B, and the included angle B between the sixth portion 422B and the substrate 100 is less than or equal to 60 degrees, i.e. the tendency of the sixth portion 422B to incline to the side of the second transparent electrode 212B is relatively gentle, so as to ensure stable preparation of the subsequent film layer.

With continued reference to fig. 12, the first separation structure 421 has a length h1, the second separation structure 422 has a length h2, and the third separation structure 423 has a length h3, where h1 < h3 < h2.

Specifically, referring to fig. 12, the thickness of the first transparent electrode 212A is smaller than the thickness of the second transparent electrode 212B, and the thickness of the second transparent electrode 212B is smaller than the thickness of the third transparent electrode 212C. Further, in order to satisfy the above two cases, there is a difference in length of the separation structure 400 at different positions, specifically, referring to fig. 12 to 15, each of the first separation structure 421 and the third separation structure 423 overlaps the first transparent electrode 212A, and the difference in thickness between the first transparent electrode 212A and the second transparent electrode 212B is smaller than the difference in thickness between the first transparent electrode 212A and the third transparent electrode 212C, and the length of the third portion 421C is smaller than the length of the eleventh portion 423B, so that the length of the first separation structure 421 is smaller than the length of the third separation structure 431. Further, the second separation structure 422 overlaps with the upper side of the second transparent electrode 212B and the upper side of the third transparent electrode 212C, respectively, and the length of the third separation structure 423 is smaller than the length of the second separation structure 422. Through setting up the length h1 of first separation structure 421, the length h2 of second separation structure 422 and the length h3 of third separation structure 423 satisfy h1 < h3 < h2, guarantee that the setting mode of separation structure matches with the setting mode of transparent electrode, guarantee on the basis of guaranteeing to realize the promotion of color purity and demonstration equilibrium through the transparent electrode that thickness is different, guarantee that each separation structure is to the good coverage of pixel limit structure and transparent electrode, guarantee display panel's stable in structure.

Further, referring to FIG. 12, the first electrode 210 of the first sub-pixel 200A has a thickness D1, the pixel defining structure 300 has a thickness D1, and 0.ltoreq.D1-d1.ltoreq.50 nm.

The thickness of the first electrode 210 of the first sub-pixel 200A is D1, and the first electrode 210 of the first sub-pixel 200A is smaller than the thickness of the first electrode 210 in the other sub-pixels 200. Further, the thickness of the pixel defining structure 300 is d1, and there is the following relationship between the first electrode 210 and the thickness of the pixel defining structure 300: D1-D1 is more than or equal to 0 and less than or equal to 50nm. Illustratively, the thickness difference may be 10nm, 20nm, 30nm, 45nm, or 50nm, which is not particularly limited by the embodiments of the present utility model. In general, the thickness difference between the first electrode 210 and the pixel defining structure 300 is small, and structural stability and flatness of the entire display panel 10 may be ensured.

Further, referring to fig. 12, the thickness of the pixel defining structure 300 is equal to the sum of the thicknesses of the bottom electrode 211 and the first transparent electrode 212A.

Further, in the case where the thickness of the pixel defining structure 300 is equal to the sum of the thickness of the bottom electrode 211 and the thickness of the first transparent electrode 212A, that is, the thickness of the pixel defining structure 300 is equal to the thickness of the first electrode 210 of the first sub-pixel 200A, that is, the thickness of the pixel defining structure 300 is equal to the thickness of the first electrode 210 having the smallest thickness. By more accurately defining the pixel defining structure 300, the flatness of the structure of the display panel 10 can be further ensured, and the pixel defining structure 300 can be manufactured with the same thickness, and the manufacturing cost of the display panel 10 as a whole can be reduced.

Fig. 16 is a schematic structural diagram of another display panel according to an embodiment of the present utility model, and referring to fig. 16, a thickness of a first transparent electrode 212A is smaller than a thickness of a second transparent electrode 212B, and a thickness of the second transparent electrode 212B is smaller than a thickness of a third transparent electrode 212C; in the first, second, and third sub-pixels 200A, 200B, and 200C, the difference between the thickness of the pixel defining structure 300 and the thickness of the first electrode 210 of the second sub-pixel 200B is minimal.

As shown in fig. 16, the sub-pixels 200 include a first sub-pixel 200A, a second sub-pixel 200B, and a third sub-pixel 200C of different colors, and the thicknesses of the transparent electrodes 212 in the sub-pixels 200 of different colors are different. Specifically, the thickness of the first transparent electrode 212A is smaller than the thickness of the second transparent electrode 212B, and the thickness of the second transparent electrode 212B is smaller than the thickness of the third transparent electrode 212C. Further, there is a pixel defining structure 300 between the first electrodes 210 of adjacent sub-pixels 200, wherein the difference between the thickness of the pixel defining structure 300 and the thickness of the second sub-pixel 200B is the smallest, i.e. the thickness of the pixel defining structure 300 in the display panel 10 has uniformity, which is similar or the same as the thickness of the second sub-pixel 200B. And the thickness of any one of the pixel defining structures 300 is set to be the same, the manufacturing process of the pixel defining structure 300 can be simplified, and the process cost can be reduced. Further, referring to fig. 16, the thickness of the first transparent electrode 212A is the smallest, the thickness of the third transparent electrode 212C is the largest, and the thickness of the second transparent electrode 212B is moderate, i.e., the thickness of the pixel defining structure 300 is also moderate with uniformity, compared to the other transparent electrodes 212.

With continued reference to fig. 16, the pixel defining structure between the first sub-pixel 200A and the second sub-pixel 200B is a first pixel defining structure 310, the pixel defining structure between the second sub-pixel 200B and the third sub-pixel 200C is a second pixel defining structure 320, the pixel defining structure between the first sub-pixel 200A and the third sub-pixel 200C is a third pixel defining structure 330, and the shapes of the first pixel defining structure 310, the second pixel defining structure 320, and the third pixel defining structure 330 are different; the separation structure between the first sub-pixel 200A and the second sub-pixel 200B is a first separation structure 421, the separation structure between the second sub-pixel 200B and the third sub-pixel 200C is a second separation structure 422, the separation structure between the first sub-pixel 200A and the third sub-pixel 200C is a third separation structure 423, and the shapes of the first separation structure 421, the second separation structure 422, and the third separation structure 423 are different from each other.

Specifically, referring to fig. 16, the pixel defining structure 300 includes a first pixel defining structure 310, a second pixel defining structure 320 and a third pixel defining structure 330, different pixel defining structures 300 are located between different adjacent sub-pixels 200, and the shapes of the first pixel defining structure 310, the second pixel defining structure 320 and the third pixel defining structure 330 are adaptively adjusted based on the difference in thickness between the adjacent sub-pixels 200, so that the shapes of the first pixel defining structure 310, the second pixel defining structure 320 and the third pixel defining structure 330 are different.

Specifically, the separation structure 400 includes a first separation structure 421, a second separation structure 422, and a third separation structure 423, where two ends of the first separation structure 421 overlap with a top surface edge of the first transparent electrode 212A and a top surface edge of the second transparent electrode 212B, two ends of the second separation structure 422 overlap with a top surface edge of the second transparent electrode 212B and a top surface edge of the third transparent electrode 212C, and two ends of the third separation structure 423 overlap with a top surface edge of the first transparent electrode 212A and an edge of a top surface of the third transparent electrode 212C. Further, since the thicknesses of the transparent electrodes 212 in the first, second and third sub-pixels 200A, 200B and 200C are different, and the shapes of the first, second and third pixel defining structures 310, 320 and 330 are different, the lengths of the first, second and third separating structures 421, 422 and 423 covering the sides of the transparent electrodes or the sides of the pixel defining structures are different, and the shapes of the first, second and third separating structures 421, 422 and 423 are different.

Fig. 17 is a schematic structural view of another first separation structure provided in an embodiment of the present utility model, fig. 18 is a schematic structural view of another second separation structure provided in an embodiment of the present utility model, and fig. 19 is a schematic structural view of another third separation structure provided in an embodiment of the present utility model. Referring to fig. 17 to 19, the third transparent electrode 212C includes an upper portion 215 higher than the second transparent electrode 212B, the first pixel defining structure 310 includes a first side 310A higher than the first transparent electrode 212A, and the third pixel defining structure 330 includes a second side 330A higher than the first transparent electrode 212A; the first separation structure 421 including a first portion 421A covering an edge of the top surface of the first transparent electrode 212A, a second portion 421B covering the first side 310A of the first pixel defining structure 310, a third portion 421C covering the top surface of the first pixel defining structure 310, and a fourth portion 421D covering an edge of the top surface of the second transparent electrode 212B, the first portion 421A, the second portion 421B, the third portion 421C, and the fourth portion 421D being sequentially connected; a second separation structure 422 including a fifth portion 422A covering the edge of the top surface of the second transparent electrode 212B, a sixth portion 422B covering the top surface of the second pixel defining structure 320, a seventh portion 422C covering the side surface of the upper portion of the third transparent electrode 212C, an eighth portion 422D covering the edge of the top surface of the third transparent electrode 212C, the fifth portion 422A, the sixth portion 422B, the seventh portion 422C, and the eighth portion 422D being sequentially connected; the third separation structure 423 includes a ninth portion 423A covering an edge of the top surface of the third transparent electrode 212C, a tenth portion 423B covering an upper side of the third transparent electrode 212C, an eleventh portion 423C covering a top surface of the third pixel defining structure 330, a twelfth portion 423D covering a second side 330A of the third pixel defining structure 330, a thirteenth portion 423E covering an edge of the top surface of the first transparent electrode 212A, the ninth portion 423A, the tenth portion 423B, the eleventh portion 423C, the twelfth portion 423D, and the thirteenth portion 423E being sequentially connected.

Specifically, referring to fig. 18, the third transparent electrode 212C includes an upper portion 215 higher than the second transparent electrode 212B, which shows that there is a certain thickness difference between the first transparent electrode 212A, the second transparent electrode 212B, and the third transparent electrode 212C. Further, referring to fig. 17, the first pixel defining structure 310 includes a first side 310A, and the first side 310A is a side of the first pixel defining structure 310 higher than the first transparent electrode 212A. Referring to fig. 19, the second side 330A of the third pixel defining structure 330 is a side of the third pixel defining structure 330 that is higher than the portion of the first transparent electrode 212A.

Further, referring to fig. 17, the first separation structure 421 includes a first portion 421A, a second portion 421B, a third portion 421C, and a fourth portion 421D, which are sequentially connected. Specifically, the first portion 421A overlaps the top edge of the first transparent electrode 212A, the second portion 421B overlaps the first side 310A of the first pixel defining structure 310, the third portion 421C overlaps the top surface of the first pixel defining structure 310, and the fourth portion 421D overlaps the top edge of the second transparent electrode 212B.

Referring to fig. 18, the second separation structure 422 includes a fifth portion 422A, a sixth portion 422B, a seventh portion 422C, and an eighth portion 422D, which are sequentially connected. Specifically, the fifth portion 422A overlaps the top edge of the second transparent electrode 212B, the sixth portion 422B overlaps the top edge of the second pixel defining structure 320, the seventh portion 422C overlaps the side surface covering the upper portion of the third transparent electrode 212C, and the eighth portion 422D overlaps the top edge of the third transparent electrode 212C.

Referring to fig. 19, the third separating structure 423 includes a ninth portion 423A, a tenth portion 423B, an eleventh portion 423C, a twelfth portion 423D, and a thirteenth portion 423E connected in this order. Specifically, the ninth portion 423A overlaps the top edge of the third transparent electrode 212C, the tenth portion 423B overlaps the upper side of the third transparent electrode 212C, the eleventh portion 423C overlaps the top surface of the third pixel defining structure 330, the twelfth portion 423D overlaps the second side 330A of the third pixel defining structure 330, and the thirteenth portion 423E overlaps the top edge of the first transparent electrode 212A.

Through the shape of each pixel limiting structure and the shape of each separation structure of reasonable setting, can match with transparent electrode's thickness, guarantee that each separation structure is to the good coverage of pixel limiting structure and transparent electrode on the basis of guaranteeing to realize color purity and demonstration equilibrium promotion through the different transparent electrode of thickness, guarantee display panel's stable in structure.

With continued reference to fig. 17 and 19, the first side 310A of the first pixel defining structure 310 is inclined toward the center of the first pixel defining structure 310 and has an inclination with an angle c with the substrate 100 of less than or equal to 60 degrees; the second side 330A of the third pixel defining structure 330 is inclined toward the center direction of the third pixel defining structure 330 and has an inclination with an angle d with the substrate 100 of less than or equal to 60 degrees.

Specifically, referring to fig. 17, the first side 310A of the first pixel defining structure 310 is inclined to the first pixel defining structure 310, and the included angle c between the first side 310A and the substrate 100 is less than or equal to 60 degrees, that is, the tendency that the side of the first pixel defining structure 310 is inclined to the first pixel defining structure 310 is gentle, so as to ensure stable preparation of the subsequent film layer. Further, referring to fig. 19, the second side 330A of the third pixel defining structure 330 is inclined toward the third pixel defining structure 330, and the included angle d between the second side 330A and the substrate 100 is less than or equal to 60 degrees, i.e. the inclination of the side of the third pixel defining structure 330 toward the third pixel defining structure 330 is gentle, so as to ensure the stable preparation of the subsequent film layer.

With continued reference to fig. 18 and 19, the seventh portion 422C and the tenth portion 423B are inclined to the third transparent electrode 212C side, respectively, and have an inclination with an angle of 60 degrees or less with the substrate 100.

Specifically, referring to fig. 18, the seventh portion 422C is inclined toward the third transparent electrode 212C, and the angle e between the seventh portion 422C and the substrate 100 is less than or equal to 60 degrees, i.e., the tendency of the seventh portion 422C to incline toward the third transparent electrode 212C is relatively gentle, so as to ensure stable preparation of the subsequent film layer. Further, referring to fig. 19, the tenth portion 423B is inclined toward the third transparent electrode 212C, and an included angle f between the tenth portion 423B and the substrate 100 is less than or equal to 60 degrees, i.e., a tendency of the tenth portion 423B to incline toward the third transparent electrode 212C is gentle, so as to ensure stable preparation of the subsequent film layer.

With continued reference to fig. 16, the first separation structure 421 has a length h1, the second separation structure 422 has a length h2, and the third separation structure 423 has a length h3, where h1 < h3, and h2 < h3.

Specifically, referring to fig. 16, the thickness of the first transparent electrode 212A is smaller than the thickness of the second transparent electrode 212B, the thickness of the second transparent electrode 212B is smaller than the thickness of the third transparent electrode 212C, and the shape of each pixel defining structure is also different. The first separating structure 421, the second separating structure 422, and the third separating structure 423 cover the first side 310A, the second separating structure 422 covers the side of the upper portion of the third transparent electrode 212C, and the third separating structure 423 covers the side of the upper portion of the third transparent electrode 212C and the second side 330A, except for covering the top edges of the transparent electrode and the top surface of the pixel defining structure. Through setting up the length h1 of first separation structure 421, the length h2 of second separation structure 422 and the length h3 of third separation structure 423 satisfy h1 < h3, h2 < h3, guarantee that separation structure's setting mode matches with transparent electrode, pixel limit structure's setting mode, guarantee to realize the good coverage of each separation structure to pixel limit structure and transparent electrode through the different transparent electrode of thickness on the basis of the promotion of demonstration equilibrium, guarantee display panel's stable in structure.

Further, with continued reference to FIG. 16, the first electrode 210 of the second sub-pixel 200B has a thickness D4, the pixel defining structure 300 has a thickness D4, and 0.ltoreq.D4-d4.ltoreq.50 nm.

The thickness of the first electrode 210 of the second sub-pixel 200B is D4, and the thickness of the first electrode 210 of the second sub-pixel 200B is moderate compared to the thickness of the first electrode 210 in the other sub-pixels 200. Further, the thickness of the pixel defining structure 300 is d4, and there is a relationship between the first electrode 210 of the second sub-pixel 200B and the thickness of the pixel defining structure 300 as follows: D4-D4 is more than or equal to 0 and less than or equal to 50nm. Illustratively, the thickness difference may be 10nm, 20nm, 30nm, 45nm, or 50nm, which is not particularly limited by the embodiments of the present utility model.

In general, the first electrode 210 disposed to be close to or equal to the thickness of the second subpixel 200B may reduce a step difference between the film layers. In fig. 12, the level differences between the second separation structure 422, the third separation structure 423, and the third transparent electrode 212C are all relatively large; in the structure of fig. 16, the thickness of the pixel defining structure 300 is set to be equal to or close to the thickness of the first electrode 210 of the second sub-pixel 200B, so that the step difference between the second separating structure 422, the third separating structure 423 and the third transparent electrode 212C is reduced, the film forming yield of the separating structure and good film coverage performance can be improved, and the structural stability and flatness of the whole display panel 10 are ensured.

Further, referring to fig. 16, the thickness of the pixel defining structure 300 is equal to the sum of the thicknesses of the bottom electrode 211 and the second transparent electrode 212B.

Further, in case the thickness of the pixel defining structure 300 is equal to the sum of the thickness of the bottom electrode 211 and the thickness of the second transparent electrode 212B, i.e. the thickness of the pixel defining structure 300 is equal to the thickness of the first electrode 210 of the second sub-pixel 200B, i.e. the thickness of the pixel defining structure 300 is equal to the thickness of the first electrode 210 centered in thickness. By more accurately defining the pixel defining structure 300, the flatness of the structure of the display panel 10 can be further ensured, and the pixel defining structure 300 can be manufactured with the same thickness, and the manufacturing cost of the display panel 10 as a whole can be reduced.

Fig. 20 is a schematic structural view of a separation structure according to an embodiment of the present utility model, and fig. 21 is a schematic structural view of a separation structure according to an embodiment of the present utility model, and referring to fig. 20 and 21, at least one common organic film layer is broken at an end of the separation structure 400.

Specifically, referring to fig. 20, the organic film 500 includes multiple common organic film layers, and at least one common organic film layer (for example 521 and 522 in the drawing) is broken at the end of the separation structure 400, so that the organic film layer with the whole film in the sub-pixel 200 is in a broken structure between the sub-pixels, avoiding the leakage flow transmission of holes or electrons between different sub-pixels 200, and further avoiding the crosstalk condition between different sub-pixels 200, and further ensuring the display effect of the display panel 10.

Referring to fig. 20, the organic film layers are common organic film layers, and include a hole injection layer 521, a hole transport layer 522, an organic light emitting layer 523, an electron transport layer 524, and an electron injection layer 525, which are sequentially disposed on the transparent electrode 212.

Specifically, referring to fig. 20, in the case where the separation structure 400 includes four insulating layers 410, the organic film layer may include a hole injection layer 521, a hole transport layer 522, an organic light emitting layer 523, an electron transport layer 524, and an electron injection layer 525 sequentially disposed, wherein electrons and holes transported in the film layer meet at the organic light emitting layer 523 and excite light rays of corresponding wavelengths, and thus display effects of different colors may be achieved.

As shown in fig. 20, the hole injection layer 521 is broken at the inward-contracted portions of the first insulating layer 411 and the third insulating layer 413, and the hole transport layer 522 is broken at the inward-contracted portion of the third insulating layer 413; alternatively, as shown in fig. 21, the hole injection layer 521 is disconnected at the inward-contracted portions of the first insulating layer 411 and the third insulating layer 413, and the hole transport layer 522 is disconnected at the inward-contracted portion of the first insulating layer 411.

As shown in fig. 20 and 21, the hole injection layer 521 and the hole transport layer 522 in the organic film layer 510 are disconnected at the end of the separation structure 400, and the transmission paths of holes between different sub-pixels, that is, the transmission paths of leakage currents between different sub-pixels are blocked, so as to ensure the display light emitting effect of each sub-pixel 200 of the display panel 10. In fig. 20, the thickness of the first insulating layer 411 is small, and the hole transport layer 522 located at the upper layer may be connected at the inward contraction of the first insulating layer 411, and disconnected only at the inward contraction of the third insulating layer 413; in fig. 21, the thickness of the first insulating layer 411 is large, and the hole transport layer 522 located at the upper layer forms a broken structure at the inward contraction of the first insulating layer 411.

Further, the disconnection of the hole injection layer 521 and the hole transport layer 522 has various implementations, and referring to fig. 20, the hole injection layer 521 is disconnected at the inward contracted portions of the first insulating layer 411 and the third insulating layer 413, and the hole transport layer 522 far from the transparent electrode 212 is disconnected at the inward contracted portion of the third insulating layer 413 compared to the hole injection layer 521. Or referring to fig. 21, it is still ensured that the hole injection layer 521 is broken at the inward-contracted portions of the first insulating layer 411 and the third insulating layer 413, and the lower film layer of the hole transport layer 522, that is, the lower surface of the hole transport layer, is broken at the inward-contracted portion of the first insulating layer 411, and the hole transport layer 522 is broken at the inward-contracted portion of the first insulating layer 411; alternatively, the lower film layers of the hole injection layer 521 and the hole transport layer 522 may be disconnected at the inward-contracted portions of the first insulating layer 411 and the third insulating layer 413, and the upper film layer of the hole transport layer 522 may be disconnected at the inward-contracted portion of the third insulating layer 413. The thickness of each insulating layer of the separation structure 400 may be set by the thickness of the common organic film layer to set the diversity setting of the common organic film layer disconnection, ensuring blocking of the transmission path of holes between different sub-pixels.

In one embodiment, referring to fig. 20 or 21, the multi-layered organic film layer includes a hole injection layer 521, a hole transport layer 522, an organic light emitting layer 523, an electron transport layer 524, and an electron injection layer 525 sequentially disposed on the transparent electrode 212, wherein the thickness of the hole injection layer 521 is X, the sum of thicknesses of other organic film layers except the thickness of the hole injection layer is Y, the thickness of the first insulating layer 411 is a, the thickness of the second insulating layer 412 is b, the thickness of the third insulating layer 413 is c, and a is equal to or greater than X, c is equal to or greater than X, (a+b+c) < (x+y). That is, the thickness of the first insulating layer 411 is equal to or greater than the thickness of the hole injection layer 521, and the thickness of the third insulating layer 413 is equal to or greater than the thickness of the hole injection layer 521, and the larger thickness of the first insulating layer 411 and the third insulating layer 413 can break the hole injection layer 521 at the tapered portion; meanwhile, the sum of the thicknesses of the first insulating layer 411, the second insulating layer 412 and the third insulating layer 413 is smaller than the sum of the thicknesses of all organic film layers, so that the electron injection layer 525 at the uppermost layer is not broken at the separation structure 400, but forms a continuous whole film layer, the electron injection layer 515 of the second electrode 600 at the upper layer of the electron injection layer 525 forms a film, and a continuous whole structure can be formed, so that the electric signal transmission of the second electrode 600 is ensured.

Fig. 22 is a schematic structural view of an organic film layer according to an embodiment of the present utility model, fig. 23 is a schematic structural view of another separation structure according to an embodiment of the present utility model, and referring to fig. 22 and 23, the multi-layered organic film layer 500 is a common organic film layer, and the multi-layered organic film layer 500 includes a first organic light emitting unit 531, a first electron generating layer 532, a second electron generating layer 533, and a second organic light emitting unit 534 sequentially disposed on the transparent electrode 212; the first organic light emitting unit 531 or the second organic light emitting unit 534 includes two film layers emitting different colors.

As shown in fig. 22, the organic film layer may include a first organic light emitting unit 531, a first electron generating layer 532, a second electron generating layer 533, and a second organic light emitting unit 534 sequentially disposed, wherein the first organic light emitting unit 531 may include a plurality of organic film layers, such as a hole injection layer, a first hole transport layer, a hole blocking layer, and a light emitting layer, and the second organic light emitting unit 534 may include a plurality of organic film layers, such as a second hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer, and the embodiment of the present utility model is not particularly limited thereto. The first organic light emitting unit 531 or the second organic light emitting unit 534 includes at least two film layers emitting different colors, for example, the first organic light emitting unit 531 includes a light emitting film layer 531a, the second organic light emitting unit 532 may include light emitting film layers 534a and 534b, the light emitting film layer 531a may emit blue light, the light emitting film layer 534a may emit red light, and the light emitting film layer 534b may emit green light, for example.

Fig. 24 is a schematic structural view of another separation structure provided by the embodiment of the present utility model, fig. 25 is a schematic structural view of another separation structure provided by the embodiment of the present utility model, and referring to fig. 23 to 25, at least part of the common organic film layer is broken at the end of the separation structure 400, so as to ensure the display light emitting effect of each sub-pixel 200 of the display panel 10, and further, the breaking of the organic film layer 510 has various implementation manners.

Referring to fig. 23, the common organic film layer in the first organic light emitting unit 531 is broken at the inward contracted portions of the first insulating layer 411 and the third insulating layer 413, only the first organic light emitting unit 531 is shown in fig. 23, and all the film layers are not shown. The first electron generation layer 532 and the second electron generation layer 533, which are farther from the transparent electrode 212 than the first organic light emitting unit 531, are disconnected at the tapered portion of the third insulating layer 413.

Or as described with reference to fig. 24, the common organic film layer and the first electron generation layer 532 in the first organic light emitting unit 531 are disconnected at the inward contracted portions of the first insulating layer 411 and the third insulating layer 413, and the second electron generation layer 533 of the first electron generation layer 532 remote from the transparent electrode 212 is disconnected at the inward contracted portion of the third insulating layer 413, compared to the first electron generation layer 411.

Or referring to fig. 25, it is still ensured that the hole injection layer 531 is disconnected at the inward shrinking portions of the first insulating layer 411 and the third insulating layer 413, while the lower film layer 532-1 of the first electron generation layer 532 is disconnected at the inward shrinking portions of the first insulating layer 411 and the third insulating layer 413, and the upper film layer 532-2 of the first electron generation layer 532 and the second electron generation layer 533 are disconnected at the inward shrinking portion of the third insulating layer 413, so that the diversity of the organic public film disconnection is reflected, and the display effect of the display panel 10 is ensured.

With continued reference to fig. 23, the first organic light emitting unit 531 has a thickness X, the sum of the thicknesses of the first electron generating layer 532 and the second electron generating layer 533 is Y, and the second organic light emitting unit 534 has a thickness Z; the thickness of the first insulating layer 411 is a, the thickness of the second insulating layer 412 is b, and the thickness of the third insulating layer 413 is c; wherein (X+Y) is more than or equal to a is more than or equal to Y, (X+Y) is more than or equal to c is more than or equal to Y, and (a+b+c) is less than 2/3× (X+Y+Z).

Specifically, the thickness X of the first organic light emitting unit 531, the sum Y of the thicknesses of the first electron generation layer 532 and the second organic light emitting unit 534, and the thickness a of the first insulating layer 411 satisfy (x+y) > a Σ > Y; the thickness X of the first organic light emitting unit 531, the sum Y of the thicknesses of the first electron generating layer 532 and the second organic light emitting unit 534, and the thickness c of the third insulating layer 413 satisfy (x+y) > c > Y; the thickness X of the first organic light emitting unit 531, the thickness sum Y of the first and second electron generating layers 532 and 533, the thickness Z of the second organic light emitting unit 534, the thickness a of the first insulating layer 411, the thickness b of the second insulating layer 412, and the thickness c of the third insulating layer 413 satisfy (a+b+c) < 2/3× (x+y+z), so that the common organic film layer, the first and second electron generating layers 532 and 533 in the first organic light emitting unit 531 can be ensured to be disconnected at the inner shrinking portion, the transmission path of leakage current between different sub-pixels can be blocked, the problem of lighting between different sub-pixels can be avoided, and the display light emitting effect of each sub-pixel 200 of the display panel 10 can be ensured.

Fig. 26 is a schematic structural view of another separation structure according to an embodiment of the present utility model, and fig. 27 is a schematic structural view of another separation structure according to an embodiment of the present utility model. Referring to fig. 26 and 27, the organic film layers are common organic film layers, and include a hole injection layer 521, a hole transport layer 522, an organic light emitting layer 523, an electron transport layer 524, and an electron injection layer 525 sequentially disposed on the transparent electrode 212.

Specifically, referring to fig. 26 and 27, in the case where the separation structure 400 includes five insulating layers 410, the organic film layer may include a hole injection layer 521, a hole transport layer 522, an organic light emitting layer 523, an electron transport layer 524, and an electron injection layer 525 sequentially disposed, wherein electrons and holes transported in the film layer meet at the organic light emitting layer 523 and excite light rays of corresponding wavelengths, and thus display effects of different colors may be achieved.

With continued reference to fig. 26 and 27, the hole injection layer 521 is broken at the inward-contracted portions of the second insulating layer 412 and the fourth insulating layer 414, and the hole transport layer 522 is broken at the inward-contracted portion of the fourth insulating layer 414; or the lower film layer 522-1 of the hole injection layer 521 and the hole transport layer 522 is broken at the inward-contracted portions of the second insulating layer 412 and the fourth insulating layer 414, and the upper film layer 522-1 of the hole transport layer 522 is broken at the inward-contracted portion of the fourth insulating layer 414.

As shown in fig. 26 and 27, the hole injection layer 521 and the hole transport layer 522 in the organic film layer 510 are disconnected at the end of the separation structure 400, and the transmission paths of holes between different sub-pixels, that is, the transmission paths of leakage currents between different sub-pixels are blocked, so as to ensure the display light emitting effect of each sub-pixel 200 of the display panel 10.

Further, the disconnection of the hole injection layer 521 and the hole transport layer 522 has various implementations, and referring to fig. 26, the hole injection layer 521 is disconnected at the inward-contracted portions of the second insulating layer 412 and the fourth insulating layer 414, and the hole injection layer 521 is disconnected at the inward-contracted portion of the fourth insulating layer 414 farther from the transparent electrode 212 than the hole transport layer 522. Or referring to fig. 27, it is still ensured that the hole injection layer 521 is disconnected at the inward shrinking portions of the second insulating layer 412 and the fourth insulating layer 414, while the lower surface of the lower film layer 522-1 of the hole transport layer 522, i.e., the hole transport layer, is disconnected at the inward shrinking portions of the second insulating layer 412 and the fourth insulating layer 414, and the upper surface of the upper film layer 522-2 of the hole transport layer 522, i.e., the hole transport layer, is disconnected at the inward shrinking portion of the fourth insulating layer 414, which represents a diversity arrangement of disconnection of the organic common film layer 510, so as to ensure blocking of the hole transport paths between different sub-pixels.

In the structure shown in fig. 26 and 27, the hole injection layer 521 is provided to have a thickness X, the other organic film layers have a thickness Y, the first insulating layer 411 has a thickness a, the second insulating layer 412 has a thickness b, the third insulating layer 413 has a thickness c, and the fourth insulating layer 414 has a thickness d; wherein (a+b) is more than or equal to X, d is more than or equal to X, and (a+b+c+d) is less than or equal to (X+Y). That is, the thickness of the first insulating layer 411 and the second insulating layer 412 is equal to or greater than the thickness of the hole injection layer 521, and the thickness of the fourth insulating layer 414 is also equal to or greater than the thickness of the hole injection layer 521, and the thickness of the first insulating layer 411 and the second insulating layer 412 and the thickness of the fourth insulating layer 414 are greater so that the hole injection layer 521 is disconnected at the tapered portion; meanwhile, the sum of the thicknesses of the first insulating layer 411, the second insulating layer 412, the third insulating layer 413 and the fourth insulating layer 414 is smaller than the sum of the thicknesses of all organic film layers, so that the electron injection layer 525 at the uppermost layer is not broken at the separation structure 400, but forms a continuous whole film, and the electron injection layer 525 of the second electrode at the upper layer of the electron injection layer 525 forms a film on the whole surface, so that the electric signal transmission of the second electrode is ensured.

Fig. 28 is a schematic structural view of an organic film layer provided in an embodiment of the present utility model, fig. 29 is a schematic structural view of an organic film layer provided in an embodiment of the present utility model, fig. 30 is a schematic structural view of an organic film layer provided in an embodiment of the present utility model, and referring to fig. 22 and fig. 28, as shown in fig. 30, the separation structure 400 includes 5 insulating layers, wherein the end portions of the first insulating layer 411, the third insulating layer 413, and the fifth insulating layer 415 are extension portions, and the end portions of the second insulating layer 412 and the fourth insulating layer 414 are retraction portions; the multi-layer organic film 500 is a common organic film, and the multi-layer organic film 500 includes a first organic light emitting unit 531, a first electron generating layer 532, a second electron generating layer 533, and a second organic light emitting unit 534 sequentially disposed on the transparent electrode 212; the first organic light emitting unit 531 or the second organic light emitting unit 534 includes two film layers emitting different colors.

As shown in fig. 22, the organic film layer 510 may include a first organic light emitting unit 531, a first electron generating layer 532, a second electron generating layer 533, and a second organic light emitting unit 534 sequentially disposed, where the first organic light emitting unit 531 may include a plurality of organic film layers, such as a hole injection layer, a first hole transport layer, a hole blocking layer, and a light emitting layer, and the embodiment of the present utility model is not limited thereto, and the second organic light emitting unit 534 may include a plurality of organic film layers, such as a second hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer, and the embodiment of the present utility model is not limited thereto. The first organic light emitting unit 531 or the second organic light emitting unit 534 includes two film layers emitting different colors, for example, the first organic light emitting unit 531 includes a light emitting film layer 531a, the second organic light emitting unit 532 may include light emitting film layers 534a and 534b, the light emitting film layer 531a may emit blue light, the light emitting film layer 534a may emit red light, for example, and the light emitting film layer 534b may emit green light, for example.

The common organic film layer in the first organic light emitting unit 531 is broken at the inward contracted portions of the second and fourth insulating layers 412 and 414, and the first and second electron generating layers 532 and 533 are broken at the inward contracted portion of the fourth insulating layer 414, as shown in fig. 28; or the common organic film layer and the first electron generation layer 532 in the first organic light emitting unit 531 are disconnected at the inward shrinking portions of the second insulating layer 412 and the fourth insulating layer 414, and the second electron generation layer 533 is disconnected at the inward shrinking portion of the fourth insulating layer 414, as shown in fig. 29; or the common organic film layer in the first organic light emitting unit 531 and the lower film layer 532-1 of the first electron generation layer 532 are disconnected at the inward shrinking portion of the second insulating layer 412, and the upper film layer 532-2 of the first electron generation layer 532 and the second electron generation layer 533 are disconnected at the inward shrinking portion of the fourth insulating layer 414, as shown in fig. 30.

As shown in fig. 28 to 30, the organic film layer 500 is broken at the end of the separation structure 400, ensuring the display light emitting effect of each sub-pixel 200 of the display panel 10.

Further, the disconnection of the organic film layer 500 has various implementations, and referring to fig. 28, the common organic film layer in the first organic light emitting unit 531 is disconnected at the retracted portion of the second insulating layer 412, only a portion of the film layer in the first organic light emitting unit 531 is shown in fig. 28, and all the film layers are not shown. The first electron generation layer 532 and the second electron generation layer 533, which are farther from the transparent electrode 212 than the first organic light emitting unit 531, are disconnected at the tapered portion of the fourth insulating layer 414. Or as described with reference to fig. 29, the common organic film layer and the first electron generation layer 532 in the first organic light emitting unit 531 are disconnected at the inward contracted portion of the second insulating layer 412, compared to the second electron generation layer 533 of the first electron generation layer 532 which is far from the transparent electrode 212, which is disconnected at the inward contracted portion of the fourth insulating layer 414. Or as shown in fig. 30, the hole injection layer 521 is still ensured to be disconnected at the shrinking portion of the second insulating layer 412, while the lower film layer 532-1 of the first electron generation layer 532 (i.e., the lower surface of the first electron generation layer 532) is disconnected at the shrinking portion of the second insulating layer 412, and the upper film layer 532-2 of the first electron generation layer 532 (i.e., the upper surface of the first electron generation layer 532) and the second electron generation layer 533 are disconnected at the shrinking portion of the fourth insulating layer 414, which represents a diversity of organic public film disconnection, and ensures the display effect of the display panel 10.

With continued reference to fig. 28, the first organic light emitting unit 531 has a thickness X, the sum of the thicknesses of the first electron generating layer 532 and the second electron generating layer 533 is Y, and the second organic light emitting unit 534 has a thickness Z; the thickness of the first insulating layer 411 is a, the thickness of the second insulating layer 412 is b, the thickness of the third insulating layer 413 is c, and the thickness of the fourth insulating layer 414 is d; wherein (X+Y) is greater than or equal to b and greater than or equal to Y, (X+Y) is greater than or equal to d and greater than or equal to Y, (a+b+c+d) is less than 2/3× (X+Y+Z).

Specifically, the thickness X of the first organic light emitting unit 531, the sum Y of the thicknesses of the first electron generating layer 532 and the second organic light emitting unit 534, and the thickness b of the second insulating layer 412 satisfy (x+y) > b Σ; the thickness X of the first organic light emitting unit 531, the sum Y of the thicknesses of the first electron generating layer 532 and the second organic light emitting unit 534, and the thickness d of the fourth insulating layer 413 satisfy (x+y) > d.gtoreq.y; the thickness X of the first organic light emitting unit 531, the thicknesses and Y of the first and second electron generating layers 532 and 533, the thickness Z of the second organic light emitting unit 534, the thickness a of the first insulating layer 411, the thickness b of the second insulating layer 412, the thickness c of the third insulating layer 413, and the thickness d of the fourth insulating layer 414 satisfy (a+b+c+d) < 2/3× (x+y+z), so that it is possible to ensure that the common organic film layer, the first and second electron generating layers 532 and 533 in the first organic light emitting unit 531 are disconnected at the inner shrinking portion, to block the transmission path of the leakage current between the different sub-pixels, to avoid the problem of lighting between the different sub-pixels, and to ensure the display light emitting effect of the respective sub-pixels 200 of the display panel 10.

Further, in the sub-pixels 200 of different emission colors, the emission wavelength of the sub-pixel 200 is positively correlated with the thickness of the transparent electrode 212.

In particular, the sub-pixels 200 may include light emitting sub-pixels of a plurality of colors, such as a sub-pixel 200 emitting red light, a sub-pixel 200 emitting green light, and a light emitting sub-pixel 200 emitting blue light. Further, based on different colors of light, there are different wavelengths. The wavelength of red light is 630nm to 760nm, the wavelength of green light is 500nm to 570nm, and the wavelength of blue light is 430nm to 450nm, which are not limited by the specific values of the embodiments of the present utility model.

Further, the light emitting effect of the sub-pixels 200 can be effectively adjusted according to the adjustment of the light emitting wavelength of the sub-pixels 200 and the thickness of the transparent electrode 212, so as to ensure the light emitting balance of the sub-pixels 200 and further ensure the overall display effect of the display panel 10. Specifically, the light emitting wavelength of the sub-pixel 200 is positively correlated with the thickness of the transparent electrode 212, and illustratively, the red light wavelength is greater than the green light wavelength, and the green light wavelength is greater than the blue light wavelength, so that the thickness of the transparent electrode 212 in the sub-pixel 200 emitting red light is the thickest, and the thickness of the transparent electrode 212 in the sub-pixel 200 emitting green light is the second thinnest. The thickness of the first electrode 210 is adjusted according to the wavelength of the display panel 10, so as to ensure the overall display effect of the display panel 10.

Fig. 31 is an enlarged schematic view of another sub-pixel according to an embodiment of the utility model, and referring to fig. 31, the bottom electrode 211 includes a reflective electrode 211A.

The bottom electrode 211 includes a reflective electrode 211, and the reflective electrode 211 can reflect light rays to reflect the light rays emitted from the organic film layer to the organic film layer and the common electrode again, so as to prevent the light rays from exiting from the back of the display panel through the bottom electrode, ensure full utilization of the light rays in the sub-pixel 200, and ensure the display effect of the display panel 10.

With continued reference to fig. 31, the bottom electrode 211 further includes a third electrode 211B disposed below the reflective electrode 211A.

Further, the bottom electrode 211 further includes a third electrode 211B, where the third electrode 211B is located on a side of the reflective electrode 211A near the substrate 100, and the third electrode 211B may be, for example, a transparent electrode, so that the contact stability of the whole first electrode 210 can be increased by setting the third electrode 211B, and the situation of peeling a film layer is avoided, thereby ensuring the structural stability of the whole display panel 10.

Alternatively, the display panel 10 is a silicon-based micro display panel.

Further, the display panel 10 may be a silicon-based micro display panel, and the sub-pixel size in the silicon-based micro display panel is 1/10 of that in the conventional display device, so as to facilitate the realization of the fine display requirement.

Based on the same inventive concept, the embodiment of the present utility model further provides a display device, and fig. 32 is a schematic structural diagram of the display device provided by the embodiment of the present utility model. As shown in fig. 32, the display device 1 includes the display panel 10 in the above-described embodiment. Therefore, the display device 1 provided in the embodiment of the present utility model also has the beneficial effects described in the above embodiment, and will not be described herein. The display device 1 is illustratively a near-eye display device, for example, the display device 1 may be an AR (augmented Reality ) display device, a VR (Virtual Reality) display device.

Based on the same inventive concept, the embodiment of the present utility model further provides a method for manufacturing a display panel, and fig. 33 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present utility model, where the method for manufacturing a display panel includes the structure shown in fig. 8, and as shown in fig. 33, the method for manufacturing a display panel includes:

Step S110, providing a substrate and preparing a plurality of bottom electrodes on one side of the substrate, wherein a first center is arranged between adjacent bottom electrodes.

The display panel comprises a substrate and a plurality of sub-pixels positioned on one side of the substrate, wherein the sub-pixels are electrically connected with a pixel driving circuit positioned on the substrate, and the pixel driving circuit is used for providing display signals for the sub-pixels so as to realize the luminous and display effects of the sub-pixels. Specifically, the substrate is first prepared, and a plurality of film insulating layers are disposed on the substrate, and further, the pixel driving circuit is disposed on the film insulating layers, where the film insulating layers may include a gate insulating layer, an interlayer insulating layer, and the like, which is not specifically limited in the embodiment of the present utility model. Further, the pixel driving circuit may include at least one transistor, and a specific embodiment of the pixel driving circuit may be set by those skilled in the art according to practical situations, and is not limited herein, and exemplary pixel driving circuits may include "4T1C", "5T2C", and so on, where "4T1C" refers to a pixel driving circuit including 4 thin film transistors (T) and 1 capacitor (C), and other "5T2C", and so on.

Further, the sub-pixel fabricated on the substrate includes a first electrode, where the first electrode includes a bottom electrode, that is, the bottom electrode is fabricated on the substrate continuously, and the bottom electrode can reflect light, so as to reflect light emitted from the organic film layer into the organic film layer and the common electrode again, so that light is prevented from passing through the bottom electrode and exiting from the back surface of the display panel, and two adjacent bottom electrodes have a first center, and referring to fig. 8, two adjacent bottom electrodes have a first center P1.

In step S120, in different sub-pixel regions, a first transparent electrode, a second transparent electrode and a third transparent electrode are respectively prepared on the bottom electrode.

The transparent electrode may be made of indium tin oxide, and the embodiment of the present utility model is not limited thereto.

Further, in the sub-pixel, light may be reflected at the first electrode and the subsequently prepared second electrode a plurality of times, and the transparent electrode is a resonance portion for resonating the target wavelength. Meanwhile, the plurality of sub-pixels may include first, second, and third sub-pixels displaying different colors, such as red, green, and blue sub-pixels, in which the different colors of light have different wavelengths. Further, the phase shift generated by the reflection of the light emitted from the organic film layer between the transparent electrode and the second electrode is phi radian, the optical path of the resonance portion is L, that is, the transmission distance of the light between the transparent electrode and the second electrode is L along the thickness direction of the display panel, if the wavelength of the target light is λ, the optical path of the resonance portion should satisfy the following formula: 2L/λ+Φ/2pi=m (m is an integer). Further, the larger the m value is, the color purity of the light outputted from the resonance portion can be improved, but a decrease in display luminance and an increase in dependence of viewing angle are caused. In order to ensure that the display effect of a plurality of sub-pixels in the display panel is balanced, the m values of different sub-pixels can be adjusted to be similar or identical, and then the distances between the sub-pixel transparent electrodes and the second electrodes of different colors can be adjusted based on different wavelengths lambda, namely, the optical path L in the formula is adjusted, and further, the effect of outputting light rays of different wavelengths lambda is ensured to be similar, namely, the luminous brightness and the color purity of the sub-pixels of different colors are similar.

Specifically, to adjust the distance between the bottom electrode and the second electrode, this can be achieved by adjusting the thickness of the transparent electrode in the sub-pixels of different colors. For example, the first transparent electrode, the second transparent electrode, and the third transparent electrode represent transparent electrodes in sub-pixels of different colors, and there is a difference in thickness of the transparent electrodes. The stable and balanced display effect of the display panel is realized by adjusting the thickness of the transparent electrode, and the process is also realized better.

Referring specifically to fig. 8, the first transparent electrode 212A, the second transparent electrode 212B, and the third transparent electrode 212C are different in thickness, the first transparent electrode 212A is smaller in thickness than the second transparent electrode 212B, and the second transparent electrode 212B is smaller in thickness than the third transparent electrode 212C.

Step S130, preparing a pixel defining structure between adjacent sub-pixels.

Further, referring to fig. 8 and 9, the thickness of the pixel defining structure 300 is closest to the thickness of the first electrode 210 of the second sub-pixel 200B, and the pixel defining structure 300 is disposed between two adjacent first electrodes 210, so that the occurrence of short circuit and the like between different first electrodes can be effectively avoided, further, the influence on the luminous display effect of the sub-pixel is avoided, and the influence on the display effect of the display panel is avoided.

And step S140, depositing a plurality of insulating layer materials.

Further, the display panel further comprises a separation structure, which is prepared after the pixel defining structure is prepared. And the separation structure includes a plurality of insulating layers, which can be continuously film-formed.

And step S150, exposing and developing the multi-layer insulating layer material by using a first mask, wherein the first mask comprises a first graph corresponding to the first separation structure, a second graph corresponding to the second separation structure and a third graph corresponding to the third separation structure, and the first graph, the second graph and the third graph are respectively provided with a second center.

Further, a photoresist layer is formed on the multi-layer insulating layer, and the photoresist layer is exposed and developed by using a first mask, that is, the multi-layer insulating layer is exposed and developed simultaneously by using the first mask.

Specifically, there is a difference in thickness of the transparent electrodes based on the sub-pixels of different colors, and there is a difference in the separation structure covering the pixel defining structure and the different sub-pixels. The thickness of the first transparent electrode corresponding to the first sub-pixel is smaller than that of the second transparent electrode corresponding to the second sub-pixel, and the thickness of the second transparent electrode corresponding to the second sub-pixel is smaller than that of the third transparent electrode corresponding to the third sub-pixel. Further, the separation structure between the first sub-pixel and the second sub-pixel is a first separation structure, the separation structure between the second sub-pixel and the third sub-pixel is a second separation structure, and the separation structure between the first sub-pixel and the third sub-pixel is a third separation structure.

In order to ensure more accurate adjustment of the separation structure, different separation structures are exposed and developed through separation structure patterns with different shapes. The first separation structure is exposed and developed through the first pattern, the second separation structure is exposed and developed through the second pattern, the third separation structure is exposed and developed through the third pattern, and the first pattern, the second pattern and the third pattern are respectively specific to the second center.

In the execution of step S150, the specific processes of the first separation structure, the second separation combination and the third separation structure prepared correspondingly are as follows: corresponding to the first separation structure, the second center of the first pattern is not coincident with the first center, the second center is positioned on one side of the first center, which is close to the second transparent electrode, and the difference between the first center and the second center is equal to half of the projection length of the third part on the substrate.

And corresponding to the second separation structure, the second center of the second pattern is not overlapped with the first center, the second center is positioned on one side of the first center, which is close to the third transparent electrode, and the difference between the first center and the second center is equal to half of the difference between the projection length of the sixth part on the substrate and the projection length of the eighth part on the substrate.

Corresponding to the third separation structure, the second center of the third pattern is not coincident with the first center, the second center is positioned on one side of the first center, which is close to the third transparent electrode, and the difference between the first center and the second center is equal to half of the projection length of the eleventh part on the substrate.

Specifically, two ends of the separation structure cover the top surface partial areas of the transparent electrodes of the adjacent two first electrodes respectively, and the separation structure has a climbing condition due to different thicknesses of the transparent electrodes of the sub-pixels with different colors. Further, in order to ensure that the openings of the sub-pixels are consistent, the areas of the transparent electrodes covered by the separation structures are the same, and in combination with the 'climbing' condition of the separation structures, the second center of the mask plate for etching the separation structures is different from the first center between the original adjacent bottom electrodes. For example, the second center may be closer to the transparent electrode having a larger thickness, i.e., to the side of the first electrode having a larger overall thickness.

Illustratively, the first center between adjacent bottom electrodes is located within the pixel defining structure, i.e. the center of the pixel defining structure does not overlap with the center of the separating structure. Specifically, in the preparation process of the pixel limiting structure and the separation structure, different masks are used for etching, and the centers of the patterns of the separation structure on the masks of the separation structure are not overlapped with the first center positions of the first patterns, the second patterns and the third patterns on the first masks of the pixel limiting structure.

For example, fig. 34 is a schematic diagram of a process for manufacturing a display panel according to an embodiment of the present utility model, referring to fig. 34, a first mask 700 is used to expose and develop a multi-layer insulating layer material, a first pattern 710 corresponds to a first separation structure 421, a second pattern 720 corresponds to a second separation structure 422, and a third pattern 730 corresponds to a third separation structure 423.

Referring to fig. 13 at the same time, the first separation structure 421 includes a first portion, a second portion, a third portion, and a fourth portion connected in sequence. Specifically, the first portion overlaps the top edge of the first transparent electrode, the second portion overlaps the top edge of the pixel defining structure, the third portion overlaps the upper side of the second transparent electrode, and the fourth portion overlaps the top edge of the second transparent electrode. Referring to fig. 34, the second center P2 (1) of the first pattern 710 is not coincident with the first centers P1 of the adjacent two bottom electrodes, that is, is not coincident with the centers of the adjacent bottom electrodes. And, the difference between the first center P1 and the second center P2 (1) is equal to half of the projection length of the third portion on the substrate, and the center of the first separation structure 421 formed using the first pattern 710 will be correspondingly coincident with the second center P2 (2) of the first pattern 710.

Referring to fig. 14 at the same time, the second separation structure 422 includes a fifth portion, a sixth portion, a seventh portion, an eighth portion, and a ninth portion, which are sequentially connected. Specifically, the fifth portion overlaps with the top edge of the second transparent electrode, the sixth portion overlaps with the side surface of the upper portion of the second transparent electrode, the seventh portion overlaps with the top surface of the pixel defining structure, the eighth portion overlaps with the side surface of the upper portion of the third transparent electrode, and the ninth portion overlaps with the top edge of the third transparent electrode. Referring to fig. 34, the second center P2 (2) of the second pattern 720 and the first centers P1 of the adjacent two bottom electrodes are not overlapped, that is, are not overlapped with the centers of the adjacent bottom electrodes, and the difference between the first centers P1 and the second centers P2 (2) is equal to half of the difference between the projection length of the sixth portion on the substrate and the projection length of the eighth portion on the substrate, the center of the second separation structure 422 formed using the second pattern 720 will be overlapped with the second center P2 (2) of the second pattern 720 correspondingly.

Referring to fig. 15 at the same time, the third separation structure includes a tenth portion, an eleventh portion, a twelfth portion, and a thirteenth portion connected in sequence. Specifically, the tenth portion overlaps the top surface edge of the third transparent electrode, the eleventh portion overlaps the upper side surface of the third transparent electrode, the twelfth portion overlaps the top surface of the pixel defining structure, and the thirteenth portion overlaps the top surface edge of the first transparent electrode. Referring to fig. 34, the second center P3 (2) of the third pattern 730 is not overlapped with the first centers P1 of the adjacent two bottom electrodes, that is, is not overlapped with the centers of the adjacent bottom electrodes, and the difference between the first center P1 and the second center P3 (2) is equal to half of the projection length of the eleventh portion on the substrate.

Step S160, etching the multi-layer insulating layer material to form a multi-layer insulating layer, wherein the multi-layer insulating layer is provided with at least one inward shrinking part positioned on one side close to the substrate and at least one extending part positioned above the inward shrinking part at the end part close to the transparent electrode; in the extending part and the shrinking part which are adjacently arranged, the length of the extending part is longer than that of the shrinking part.

Through adjusting insulating layer in tip position department, realize that separation structure covers transparent electrode one side and be the non-level shape, and then can realize the disconnection of the partial organic rete that the whole layer was laid in the subpixel, and then avoid there being hole or electron's hourglass stream transmission between the different subpixels, and then avoid there being the condition of printing opacity between the different subpixels, and then guarantee display panel's display effect. Specifically, the multi-layer insulating layer has a tapered portion and an extended portion at the end, and the length of the extended portion is longer than that of the tapered portion, i.e. the end of the separation structure near the first electrode is staggered in length to form a non-flat shape.

And S170, forming a plurality of organic film layers, wherein at least one common organic film layer in the plurality of organic film layers is disconnected at the end part of the separation structure.

Specifically, the organic film layer comprises a plurality of layers of public organic film layers, and at least one layer of public organic film layer is disconnected at the end part of the separation structure, so that the disconnection of the organic film layer of the whole layer of paved part in the sub-pixel can be realized, the leakage flow transmission of holes or electrons between different sub-pixels is avoided, the condition of light transmission between different sub-pixels is avoided, and the display effect of the display panel is further ensured.

Step S180, forming a second electrode.

Therefore, the display panel structure with the minimum thickness difference between the thickness of the pixel limiting structure and the thickness of the first electrode of the first sub-pixel can be prepared, and meanwhile, the separation structure matched with the thickness of the pixel limiting structure and the thickness of the first electrode can be prepared, so that the stability of the structure of the display panel is ensured on the basis that the color purity of the sub-pixel and the display balance effect are improved through the transparent electrodes with different thicknesses. Further, at least part of the organic film layers of the separation structure are disconnected at the shrinking parts of the end parts of the separation structure, so that the transmission path of leakage current is blocked, the problem of light stealing between two adjacent sub-pixels is avoided, and the display effect of the display panel is improved.

Fig. 35 is a flowchart of another method for manufacturing a display panel according to an embodiment of the present utility model, for manufacturing a display panel including the structure shown in fig. 16, where the method for manufacturing a display panel includes:

Step S210, providing a substrate and preparing a plurality of bottom electrodes on one side of the substrate, wherein a first center is arranged between adjacent bottom electrodes.

Further, the sub-pixel prepared on the substrate includes a first electrode, the first electrode includes a bottom electrode 211, and the bottom electrode 211 can reflect light rays, so as to reflect the light rays emitted from the organic film layer into the organic film layer and the common electrode again, and avoid the light rays from exiting from the back surface of the display panel through the bottom electrode. And two adjacent bottom electrodes have a first center.

In step S220, in different sub-pixel regions, the first transparent electrode, the second transparent electrode and the third transparent electrode are respectively prepared on the bottom electrode.

The material of the transparent electrode may be, for example, indium tin oxide, which is not particularly limited in the embodiment of the present utility model.

Specifically, to adjust the distance between the bottom electrode 211 and the second electrode, it may be achieved by adjusting the thickness of the transparent electrode in the sub-pixels of different colors. For example, the first transparent electrode 212A, the second transparent electrode 212B, and the third transparent electrode 212C do not represent transparent electrodes in sub-pixels of different colors, and there is a difference in thickness of the transparent electrodes. The stable and balanced display effect of the display panel is realized by adjusting the thickness of the transparent electrode, and the process is also realized better.

Step S230, preparing a pixel defining structure between adjacent sub-pixels.

Further, the display panel further includes a plurality of pixel defining structures, the pixel defining structures are different among different sub-pixels, and referring to fig. 16, the structures of the first pixel defining structure 310, the second pixel defining structure 320, and the third pixel defining structure 330 are different.

Step S240, depositing a multi-layer insulating layer material.

Further, the display panel further comprises a separation structure, which is prepared after the pixel defining structure is prepared. And the separation structure includes a plurality of insulating layers. In particular, the separation structure is located at a side of the pixel defining structure remote from the substrate and the separation structure covers the pixel defining structure.

Step S250, exposing and developing the multi-layer insulating layer material by using a first mask, where the first mask includes a first pattern corresponding to the first separation structure, a second pattern corresponding to the second separation structure, and a third pattern corresponding to the third separation structure, and the first pattern, the second pattern, and the third pattern have second centers respectively.

Further, a photoresist layer is formed on the multi-layer insulating layer, and the photoresist layer is exposed and developed by using the same first mask, namely, the multi-layer insulating layer is exposed and developed by using the same first mask.

Specifically, the transparent electrodes of the sub-pixels with different colors and the different defining structures have structural differences, so that the difference exists between the defining structure of the covered pixel and the separating structure of the different sub-pixels. The thickness of the first transparent electrode corresponding to the first sub-pixel is smaller than that of the second transparent electrode corresponding to the second sub-pixel, and the thickness of the second transparent electrode corresponding to the second sub-pixel is smaller than that of the third transparent electrode corresponding to the third sub-pixel. Further, the separation structure between the first sub-pixel and the second sub-pixel is a first separation structure, the separation structure between the second sub-pixel and the third sub-pixel is a second separation structure, and the separation structure between the first sub-pixel and the third sub-pixel is a third separation structure.

In order to ensure more accurate adjustment of the separation structure, different separation structures are exposed and developed through different separation structure patterns. The first separation structure is exposed and developed through the first pattern, the second separation structure is exposed and developed through the second pattern, the third separation structure is exposed and developed through the third pattern, and the first pattern, the second pattern and the third pattern are respectively specific to the second center.

In the execution of step S250, the specific processes of the first separation structure, the second separation combination and the third separation structure prepared correspondingly are as follows:

Corresponding to the first separation structure, the second center of the first pattern is not coincident with the first center, the second center is positioned on one side of the first center, which is close to the second transparent electrode, and the difference between the first center and the second center is equal to half of the projection length of the second part on the substrate.

And corresponding to the second separation structure, the second center of the second pattern is not overlapped with the first center, the second center is positioned on one side of the first center, which is close to the third transparent electrode, and the difference between the first center and the second center is equal to half of the projection length of the seventh part on the substrate.

Corresponding to the third separation structure, the second center of the third pattern is not coincident with the first center, the second center is positioned on one side of the first center, which is close to the third transparent electrode, and the difference between the first center and the second center is equal to half of the difference between the projection length of the tenth part on the substrate and the projection length of the twelfth part on the substrate.

Specifically, two ends of the separation structure cover the top surface partial areas of the transparent electrodes of the adjacent two first electrodes respectively, and due to the difference of the transparent electrodes of the sub-pixels with different colors and the pixel limiting structures, namely, the separation structure has a climbing condition. Further, in order to ensure that the openings of the sub-pixels are consistent, the areas of the transparent electrodes covered by the separation structures are the same, and in combination with the 'climbing' condition of the separation structures, the second center of the mask plate for etching the separation structures is different from the first center between the original adjacent bottom electrodes. For example, the second center may be closer to the transparent electrode having a larger thickness, i.e., to the side of the first electrode having a larger overall thickness.

Further, referring to fig. 17, the first separation structure 421 includes a first portion, a second portion, a third portion, and a fourth portion that are sequentially connected, fig. 36 is a schematic diagram of another manufacturing process of a display panel provided in an embodiment of the present utility model, referring to fig. 36, a second center P2 (1) of a first image 710 in a first mask 700 is not overlapped with a first center P1 of two adjacent bottom electrodes, that is, is not overlapped with a center of an adjacent bottom electrode, and a difference between the first center P1 and the second center P2 (1) is equal to half of a projection length of the second portion on a substrate.

Further, referring to fig. 18 and 36, the second separation 422 structure includes a fifth portion, a sixth portion, a seventh portion, and an eighth portion connected in sequence. Specifically, the fifth portion overlaps the top edge of the second transparent electrode, the sixth portion overlaps the top edge of the second pixel defining structure, the seventh portion overlaps the side surface covering the upper portion of the third transparent electrode, and the eighth portion overlaps the top edge of the third transparent electrode. The second center P2 (2) of the second image 720 in the first mask 700 is not coincident with the first centers P1 of the adjacent two bottom electrodes, and the difference between the first centers P1 and the second center P2 (2) is equal to half the projection length of the seventh portion on the substrate.

Further, referring to fig. 19 and 36, the third separating structure 423 includes a ninth portion, a tenth portion, an eleventh portion, a twelfth portion, and a thirteenth portion connected in sequence. Specifically, the ninth portion overlaps the top surface edge of the third transparent electrode, the tenth portion overlaps the upper side surface of the third transparent electrode, the eleventh portion overlaps the top surface of the third pixel defining structure, the twelfth portion overlaps the second side surface of the third pixel defining structure, and the thirteenth portion overlaps the top surface edge of the first transparent electrode. The second center P2 (3) of the third image 730 in the first mask 700 is not coincident with the first centers P1 of the adjacent two bottom electrodes, and the difference between the first centers and the second center is equal to half of the difference between the projection length of the tenth portion on the substrate and the projection length of the twelfth portion on the substrate.

S260, etching the multi-layer insulating layer material to form a multi-layer insulating layer, wherein the multi-layer insulating layer is provided with at least one inward shrinking part positioned on one side close to the substrate and at least one extending part positioned above the inward shrinking part at the end part close to the transparent electrode; in the extending part and the shrinking part which are adjacently arranged, the length of the extending part is longer than that of the shrinking part.

Through the adjustment to insulating layer in tip position department, realize that separation structure covers transparent electrode one side and be the non-level shape, and then can realize the disconnection of the partial organic rete that the whole layer was laid in the subpixel, and then avoid there being hole or electron's hourglass stream transmission between the different subpixels, and then avoid there being the condition of printing opacity between the different subpixels, and then guarantee display panel's display effect. Specifically, the multi-layer insulating layer has a tapered portion and an extended portion at the end, and the length of the extended portion is longer than that of the tapered portion, i.e. the end of the separation structure near the first electrode is staggered in length to form a non-flat shape.

And step S270, forming a plurality of organic film layers, wherein at least one common organic film layer in the plurality of organic film layers is disconnected at the end part of the separation structure.

Step S280, forming a second electrode.

Therefore, the display panel structure with the minimum thickness difference between the thickness of the pixel limiting structure and the thickness of the first electrode of the second sub-pixel can be prepared, and meanwhile, the separation structure matched with the thickness of the pixel limiting structure and the thickness of the first electrode is prepared, so that the stability of the structure of the display panel is ensured on the basis that the color purity of the sub-pixels and the display balance effect are improved through the transparent electrodes with different thicknesses. Further, at least part of the organic film layers of the separation structure are disconnected at the shrinking parts of the end parts of the separation structure, so that the transmission path of leakage current is blocked, the problem of light stealing between two adjacent sub-pixels is avoided, and the display effect of the display panel is improved.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. Those skilled in the art will appreciate that the utility model is not limited to the specific embodiments described herein, and that features of the various embodiments of the utility model may be partially or fully coupled or combined with each other and may be co-operated and technically driven in various ways. Various obvious changes, rearrangements, combinations and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A display panel, comprising a substrate and a plurality of sub-pixels positioned on one side of the substrate;

At the edge of the top surface of the transparent electrode, the separation structure comprises an end part facing to one side of the transparent electrode; the insulating layer comprises at least one inward shrinking part positioned on one side close to the substrate and at least one extending part positioned above the inward shrinking part at the end part along the thickness direction of the display panel; the length of the extending part is longer than that of the shrinking part in the extending part and the shrinking part which are adjacently arranged;

The display panel further comprises a plurality of organic film layers and a second electrode arranged on the upper layer of the organic film layers, wherein the second electrode is a public electrode, and the organic film layers comprise a plurality of public organic film layers.

2. The display panel of claim 1, wherein the extension includes an upper surface and a lower surface, the upper surface having a length less than a length of the lower surface, and wherein a side between the upper surface and the lower surface forms an angle with the lower surface of less than 60 degrees.

3. The display panel according to claim 1, wherein the separation structure comprises at least four insulating layers stacked in sequence, and any adjacent three insulating layers comprise an i-th insulating layer, an i+1-th insulating layer and an i+2-th insulating layer stacked in sequence, wherein end portions of the i-th insulating layer and the i+2-th insulating layer are both the extension portions, and end portions of the i+1-th insulating layer are the retraction portions; or the ends of the i insulating layer and the i+2 insulating layer are the inward shrinking parts, and the ends of the i+1 insulating layer are the extending parts; and i is a positive integer.

4. A display panel according to claim 3, wherein the separation structure comprises a first insulating layer, a second insulating layer, a third insulating layer, and a fourth insulating layer which are sequentially stacked, an end of the first insulating layer and an end of the third insulating layer are the inward-contracted portions, and an end of the second insulating layer and an end of the fourth insulating layer are the extended portions.

5. The display panel of claim 4, wherein a length of the indented portion of the first insulating layer is greater than a length of the indented portion of the third insulating layer; the length of the extension of the second insulating layer is greater than the length of the extension of the fourth insulating layer.

6. The display panel according to claim 4, wherein the first insulating layer and the third insulating layer are a first material, wherein the second insulating layer and the fourth insulating layer are a second material, and wherein the first material and the second material are different.

7. The display panel according to claim 4, wherein the thickness of the first insulating layer and the third insulating layer is 10 to 100nm, and the thickness of the second insulating layer and the fourth insulating layer is 20 to 100nm.

8. A display panel according to claim 3, wherein the separation structure comprises a first insulating layer, a second insulating layer, a third insulating layer, a fourth insulating layer, and a fifth insulating layer which are sequentially stacked, an end of the first insulating layer, an end of the third insulating layer, and an end of the fifth insulating layer are the extended portions, and an end of the second insulating layer and an end of the fourth insulating layer are the retracted portions.

9. The display panel according to claim 8, wherein a length of the extension of the first insulating layer is greater than a length of the extension of the third insulating layer, the length of the extension of the third insulating layer being greater than a length of the extension of the fifth insulating layer; the length of the tapered portion of the second insulating layer is greater than the length of the tapered portion of the fourth insulating layer.

10. The display panel according to claim 8, wherein the first insulating layer, the third insulating layer, and the fifth insulating layer are a first material, wherein the second insulating layer and the fourth insulating layer are a second material, and wherein the first material and the second material are different.

11. The display panel according to claim 8, wherein the thicknesses of the first insulating layer, the third insulating layer, and the fifth insulating layer are 20 to 100nm, and the thicknesses of the second insulating layer and the fourth insulating layer are 10 to 100nm.

12. The display panel of claim 1, wherein the material of the pixel defining structure is silicon oxide or silicon nitride.

13. The display panel of claim 1, wherein the plurality of subpixels comprise a first subpixel, a second subpixel, and a third subpixel displaying different colors; the transparent electrode comprises a first transparent electrode arranged on the bottom electrode of the first sub-pixel, a second transparent electrode arranged on the bottom electrode of the second sub-pixel and a third transparent electrode arranged on the bottom electrode of the third sub-pixel; the first transparent electrode, the second transparent electrode, and the third transparent electrode have different thicknesses.

14. The display panel of claim 13, wherein the transparent electrode comprises a transparent electrode side and a transparent electrode top, the separation structure having a first overlap area with the transparent electrode side and a second overlap area with an edge of the transparent electrode top;

The separation structure between the first sub-pixel and the second sub-pixel is a first separation structure, the separation structure between the second sub-pixel and the third sub-pixel is a second separation structure, and the separation structure between the first sub-pixel and the third sub-pixel is a third separation structure;

For the first separation structure, the second separation structure and the third separation structure, the first overlapping areas are not identical, and the second overlapping areas are identical.

15. The display panel according to claim 13, wherein a first center is provided between adjacent bottom electrodes in a thickness direction of the display panel, the separation structure has a second center, and the first center and the second center do not coincide.

16. The display panel according to claim 13, wherein among the plurality of first electrodes, the first electrode having the smallest thickness has a thickness D1;

The thickness of any two pixel limiting structures is the same, and the thickness of each pixel limiting structure is d1; wherein D1-D1 is more than or equal to 0 and less than or equal to 50nm.

17. The display panel according to claim 13, wherein, of any adjacent two of the first electrodes, the first electrode having a smaller thickness has a thickness D2;

The thickness of the pixel defining structure between the adjacent two first electrodes is d2;

wherein D2-D2 is more than or equal to 0 and less than or equal to 50nm.

18. The display panel according to claim 13, wherein, of any two adjacent first electrodes, the first electrode having a larger thickness has a thickness D3;

The thickness of the pixel defining structure between the adjacent two first electrodes is d3;

Wherein, D3-D3 is more than or equal to 0 and less than or equal to 50nm.

19. The display panel of claim 13, wherein a thickness of the first transparent electrode is less than a thickness of the second transparent electrode, the thickness of the second transparent electrode being less than a thickness of the third transparent electrode; among the first, second, and third sub-pixels, a difference between a thickness of the pixel defining structure and a thickness of the first electrode of the first sub-pixel is minimized.

20. The display panel of claim 19, wherein the separation structure between the first subpixel and the second subpixel is a first separation structure, the separation structure between the second subpixel and the third subpixel is a second separation structure, and the separation structure between the first subpixel and the third subpixel is a third separation structure; the shapes of the first separation structure, the second separation structure and the third separation structure are different.

21. The display panel of claim 20, wherein the second transparent electrode comprises an upper portion above the pixel defining structure and the third transparent electrode comprises and is above the upper portion of the pixel defining structure;

The first separation structure comprises a first part covering the edge of the top surface of the first transparent electrode, a second part covering the top surface of the pixel limiting structure, a third part covering the upper side surface of the second transparent electrode and a fourth part covering the edge of the top surface of the second transparent electrode, and the first part, the second part, the third part and the fourth part are sequentially connected;

The second separation structure comprises a fifth part covering the edge of the top surface of the second transparent electrode, a sixth part covering the side surface of the upper part of the second transparent electrode, a seventh part covering the top surface of the pixel limiting structure, an eighth part covering the side surface of the upper part of the third transparent electrode, and a ninth part covering the edge of the top surface of the third transparent electrode, wherein the fifth part, the sixth part, the seventh part, the eighth part and the ninth part are sequentially connected;

The third separation structure comprises a tenth part covering the edge of the top surface of the third transparent electrode, an eleventh part covering the side surface of the upper part of the third transparent electrode, a twelfth part covering the top surface of the pixel limiting structure, and a thirteenth part covering the edge of the top surface of the first transparent electrode, wherein the tenth part, the eleventh part, the twelfth part and the thirteenth part are sequentially connected.

22. The display panel according to claim 21, wherein the third portion and the sixth portion are inclined to the second transparent electrode side, respectively, and have an inclination with an angle of 60 degrees or less with the substrate.

23. The display panel of claim 20, wherein the first separation structure has a length h1, the second separation structure has a length h2, and the third separation structure has a length h3, wherein h1 < h3 < h2.

24. The display panel of claim 19, wherein the first electrode of the first subpixel has a thickness D1, the pixel defining structure has a thickness D1, and 0.ltoreq.d1-d1.ltoreq.50 nm.

25. The display panel of claim 19, wherein a thickness of the pixel defining structure is equal to a sum of thicknesses of the bottom electrode and the first transparent electrode.

26. The display panel of claim 13, wherein a thickness of the first transparent electrode is less than a thickness of the second transparent electrode, the thickness of the second transparent electrode being less than a thickness of the third transparent electrode; among the first, second, and third sub-pixels, a thickness difference between the pixel defining structure and the first electrode of the second sub-pixel is smallest.

27. The display panel of claim 26, wherein the pixel defining structure between the first and second sub-pixels is a first pixel defining structure, the pixel defining structure between the second and third sub-pixels is a second pixel defining structure, the pixel defining structure between the first and third sub-pixels is a third pixel defining structure, and the first, second, and third pixel defining structures are different in shape;

The separation structure between the first sub-pixel and the second sub-pixel is a first separation structure, the separation structure between the second sub-pixel and the third sub-pixel is a second separation structure, the separation structure between the first sub-pixel and the third sub-pixel is a third separation structure, and the shapes of the first separation structure, the second separation structure and the third separation structure are different.

28. The display panel of claim 27, wherein the third transparent electrode comprises an upper portion higher than the second transparent electrode, the first pixel defining structure comprises a first side higher than the first transparent electrode, and the third pixel defining structure comprises a second side higher than the first transparent electrode;

The first separation structure comprises a first part covering the edge of the top surface of the first transparent electrode, a second part covering the first side surface of the first pixel limiting structure, a third part covering the top surface of the first pixel limiting structure and a fourth part covering the edge of the top surface of the second transparent electrode, and the first part, the second part, the third part and the fourth part are sequentially connected;

The second separation structure comprises a fifth part covering the edge of the top surface of the second transparent electrode, a sixth part covering the top surface of the second pixel limiting structure, a seventh part covering the side surface of the upper part of the third transparent electrode and an eighth part covering the edge of the top surface of the third transparent electrode, and the fifth part, the sixth part, the seventh part and the eighth part are sequentially connected;

The third separation structure comprises a ninth part covering the top surface edge of the third transparent electrode, a tenth part covering the upper side surface of the third transparent electrode, an eleventh part covering the top surface of the third pixel limiting structure, a twelfth part covering the second side surface of the third pixel limiting structure, a thirteenth part covering the top surface edge of the first transparent electrode, and the ninth part, the tenth part, the eleventh part, the twelfth part and the thirteenth part are sequentially connected.

29. The display panel of claim 28, wherein a first side of the first pixel defining structure is inclined toward a center direction of the first pixel defining structure and has an inclination with an included angle with the substrate of less than or equal to 60 degrees; the second side of the third pixel defining structure is inclined toward the center direction of the third pixel defining structure and has an inclination with an included angle with the substrate of less than or equal to 60 degrees.

30. The display panel according to claim 28, wherein the seventh portion and the tenth portion are inclined to the third transparent electrode side, respectively, and have an inclination with an angle with the substrate of 60 degrees or less.

31. The display panel of claim 27, wherein the first separation structure has a length h1, the second separation structure has a length h2, and the third separation structure has a length h3, wherein h1 < h3, and h2 < h3.

32. The display panel of claim 26, wherein the thickness of the first electrode of the second subpixel is D4, the thickness of the pixel defining structure is D4, and 0.ltoreq.d4-d4.ltoreq.50 nm.

33. The display panel of claim 26, wherein a thickness of the pixel defining structure is equal to a sum of thicknesses of the bottom electrode and the second transparent electrode.

34. The display panel of claim 1, wherein at least one of the common organic film layers is broken at an end of the separation structure.

35. The display panel according to claim 4, wherein the plurality of organic film layers are common organic film layers, and the plurality of organic film layers include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer sequentially disposed on the transparent electrode.

36. The display panel according to claim 35, wherein the hole injection layer is broken at the inward-contracted portions of the first insulating layer and the third insulating layer, and wherein the hole transport layer is broken at the inward-contracted portion of the third insulating layer; or the lower film layers of the hole injection layer and the hole transport layer are disconnected at the inward shrinking parts of the first insulating layer and the third insulating layer, and the upper film layer of the hole transport layer is disconnected at the inward shrinking part of the third insulating layer.

37. The display panel according to claim 35, wherein the multi-layered organic film layer includes a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer sequentially disposed on the transparent electrode; the thickness of the hole injection layer is X, the sum of the thicknesses of other organic film layers is Y, the thickness of the first insulating layer is a, the thickness of the second insulating layer is b, and the thickness of the third insulating layer is c; wherein a is greater than or equal to X, c is greater than or equal to X, and (a+b+c) < (X+Y).

38. The display panel according to claim 4, wherein the plurality of organic film layers are the common organic film layer, the plurality of organic film layers including a first organic light emitting unit, a first electron generating layer, a second electron generating layer, and a second organic light emitting unit sequentially disposed on the transparent electrode; the first organic light emitting unit or the second organic light emitting unit includes two film layers emitting different colors.

39. The display panel according to claim 38, wherein a common organic film layer in the first organic light emitting unit is disconnected at the first insulating layer, the inward shrinking portion of the third insulating layer, and the first electron generating layer and the second electron generating layer are disconnected at the inward shrinking portion of the third insulating layer; or alternatively

The common organic film layer and the first electron generation layer in the first organic light emitting unit are disconnected at the shrinking-in part of the first insulating layer and the third insulating layer, and the second electron generation layer is disconnected at the shrinking-in part of the third insulating layer; or alternatively

The common organic film layer in the first organic light emitting unit and the lower film layer of the first electron generating layer are disconnected at the first insulating layer and the shrinking portion of the third insulating layer, and the upper film layer of the first electron generating layer and the second electron generating layer are disconnected at the shrinking portion of the third insulating layer.

40. The display panel according to claim 38, wherein a thickness of the first organic light emitting unit is X, a sum of thicknesses of the first electron generating layer and the second electron generating layer is Y, and a thickness of the second organic light emitting unit is Z; the thickness of the first insulating layer is a, the thickness of the second insulating layer is b, and the thickness of the third insulating layer is c; wherein,

(X+Y)≥a≥Y，(X+Y)≥c≥Y，(a+b+c)＜2/3×(X+Y+Z)。

41. The display panel according to claim 8, wherein the plurality of organic film layers are common organic film layers, each of the plurality of organic film layers including a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer sequentially disposed on the transparent electrode.

42. The display panel according to claim 41, wherein the hole injection layer is broken at a retracted portion of the second insulating layer and the fourth insulating layer, and wherein the hole transport layer is broken at a retracted portion of the fourth insulating layer; or the lower film layers of the hole injection layer and the hole transport layer are disconnected at the inward shrinking parts of the second insulating layer and the fourth insulating layer, and the upper film layer of the hole transport layer is disconnected at the inward shrinking part of the fourth insulating layer.

43. The display panel according to claim 41, wherein the plurality of organic film layers includes a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer sequentially disposed on the transparent electrode; the thickness of the hole injection layer is X, the sum of the thicknesses of other organic film layers is Y, the thickness of the first insulating layer is a, the thickness of the second insulating layer is b, the thickness of the third insulating layer is c, and the thickness of the fourth insulating layer is d; wherein (a+b) is more than or equal to X, d is more than or equal to X, and (a+b+c+d) is less than or equal to (X+Y).

44. The display panel according to claim 8, wherein the plurality of organic film layers are common organic film layers, each of the plurality of organic film layers including a first organic light emitting unit, a first electron generating layer, a second electron generating layer, and a second organic light emitting unit sequentially disposed on the transparent electrode; the first organic light emitting unit or the second organic light emitting unit includes two film layers emitting different colors.

45. The display panel according to claim 44, wherein a common organic film layer in the first organic light emitting unit is disconnected at the second insulating layer, the inward shrinking portion of the fourth insulating layer, and the first electron generating layer and the second electron generating layer are disconnected at the inward shrinking portion of the fourth insulating layer; or alternatively

The common organic film layer and the first electron generation layer in the first organic light emitting unit are disconnected at the second insulating layer and the fourth insulating layer, and the second electron generation layer is disconnected at the fourth insulating layer; or alternatively

The common organic film layer in the first organic light emitting unit and the lower film layer of the first electron generation layer are disconnected at the second insulating layer and the inward shrinking portion of the fourth insulating layer, and the upper film layer of the first electron generation layer and the second electron generation layer are disconnected at the inward shrinking portion of the fourth insulating layer.

46. The display panel of claim 44, wherein the first organic light emitting unit has a thickness X, the sum of the thicknesses of the first electron generating layer and the second electron generating layer is Y, and the second organic light emitting unit has a thickness Z; the thickness of the first insulating layer is a, the thickness of the second insulating layer is b, the thickness of the third insulating layer is c, and the thickness of the fourth insulating layer is d; wherein,

(X+Y)≥b≥Y，(X+Y)≥d≥Y，(a+b+c+d)＜2/3×(X+Y+Z)。

47. The display panel according to claim 1, wherein in the sub-pixels of different emission colors, an emission wavelength of the sub-pixel is positively correlated with a thickness of the transparent electrode.

48. The display panel of claim 1, wherein the bottom electrode comprises a reflective electrode.

49. The display panel of claim 48, wherein the bottom electrode further comprises a third electrode disposed below the reflective electrode.

50. The display panel of any one of claims 1-49, wherein the display panel is a silicon-based micro display panel.

51. A display device comprising the display panel of any one of claims 1-50, wherein the display device is a near-to-eye display device.