Display panel and display apparatus

Abstract

A display panel, comprising: a base substrate (10); a pixel opening (3000); a first electrode (310); a second electrode (330); and a partition structure (400). The pixel opening (3000) is located on the base substrate (10), and at least partially exposes the first electrode (310). The partition structure (400) comprises a first partition portion (401) and a second partition portion (402) which are located on different sides of the pixel opening (3000). The second electrode (330) is located on the side of the first electrode (310) away from the base substrate (10). The second electrode (330) comprises a first end (3321) located on one side of the first partition portion (401) and a second end (3322) located on one side of the second partition portion (402). The first end (3321) is in contact with a side wall of the first partition portion (401), and the distance between the first end (3321) and the base substrate (10) is not equal to the distance between the second end (3322) and the base substrate (10).

Description

Display panel and display device Technical Field

[0001] This article relates to, but is not limited to, the field of display technology, and in particular to display panels and display devices. Background Technology

[0002] OLED (Organic Light Emitting Diode) displays are devices made using organic light-emitting diodes. OLED displays have excellent characteristics such as no need for a backlight, high contrast, thinness, wide viewing angle, fast response speed, applicability to flexible panels, wide operating temperature range, and simpler construction and manufacturing process, and are currently widely used. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] This disclosure provides a display panel and a display device.

[0005] On the one hand, a display panel is provided. The display panel includes:

[0006] Substrate;

[0007] The pixel opening is located on the substrate.

[0008] The first electrode is at least partially exposed by the pixel opening;

[0009] The partition structure includes a first partition portion and a second partition portion, wherein the first partition portion and the second partition portion are located on different sides of the pixel opening;

[0010] The second electrode is located on the side of the first electrode away from the substrate. The second electrode includes a first end located on the side of the first partition portion, the first end being in contact with the sidewall of the first partition portion, and a second end located on the side of the second partition portion. The distance between the first end and the substrate is not equal to the distance between the second end and the substrate.

[0011] In some embodiments, the geometric center of the second electrode projected orthogonally in the substrate direction does not coincide with the geometric center of the pixel opening projected orthogonally in the substrate direction.

[0012] In some embodiments, the second end is spaced apart from the second partition portion.

[0013] In some embodiments, the second end contacts the second partition portion.

[0014] In some embodiments, the display panel further includes a second electrode sacrificial portion, which is located on the side of the partition structure parallel to the substrate and away from the first electrode; the orthographic projection of the second electrode sacrificial portion in the direction of the substrate and the orthographic projection of the second electrode in the direction of the substrate have a projection overlap portion.

[0015] In some embodiments, in the overlapping portion, the width of the first projected overlapping sub-part located on one side of the first partition portion is not equal to the width of the second projected overlapping sub-part located on one side of the second partition portion.

[0016] In some embodiments, the first end and the second end are located on opposite sides of the pixel opening.

[0017] In some embodiments, the display panel further includes a driving circuit layer located between the substrate and the pixel opening, the driving circuit layer including a plurality of signal lines, wherein the orthographic projection of the line connecting the first end and the second end of the second electrode in the direction of the substrate is parallel to the extension direction of at least one of the plurality of signal lines.

[0018] In some embodiments, the geometric center of the pixel opening lies in a plane perpendicular to the substrate, where the line connecting the first end and the second end is located.

[0019] In some embodiments, the partition structure further includes a third partition portion and a fourth partition portion, the third partition portion and the fourth partition portion being located on opposite sides of the pixel opening, and the first partition portion, the second partition portion, the third partition portion and the fourth partition portion being located on different sides of the pixel opening.

[0020] In some embodiments, the second electrode includes a third end located on one side of the third partition and a fourth end located on one side of the fourth partition, and the projection overlap portion includes a third projection overlap sub-portion located on one side of the third partition and a fourth projection overlap sub-portion located on one side of the fourth partition.

[0021] In some embodiments, the display panel includes a light-emitting functional layer located between the first electrode and the second electrode, the light-emitting functional layer including a common layer; the partition structure includes a covering portion, the covering portion at least blocking the common layer.

[0022] In some embodiments, the partition structure includes a cylindrical partition member, wherein, in the substrate direction, the orthographic projection of the surface of the cylindrical partition member on the side away from the substrate is not equal in width to the orthographic projection of the surface on the side closer to the substrate.

[0023] In some embodiments, the cylindrical separator includes a first sub-separator and a second sub-separator, wherein the first sub-separator is located on the side of the second sub-separator away from the substrate, and in a direction parallel to the substrate, the distance between the side of the first sub-separator near the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator near the pixel opening and the geometric center of the pixel opening.

[0024] In some embodiments, the cylindrical separator does not contact the first electrode, and the ratio of the thickness of the light-emitting functional layer to the thickness of the cylindrical separator is greater than or equal to 0.17 and less than or equal to 0.4.

[0025] In some embodiments, the cylindrical separator further includes a third sub-separator located between the second sub-separator and the substrate. In a direction parallel to the substrate, the distance between the side of the third sub-separator near the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator near the pixel opening and the geometric center of the pixel opening.

[0026] In some embodiments, the cylindrical separator overlaps with the first electrode portion, and the ratio of the thickness of the light-emitting functional layer to the thickness of the cylindrical separator is greater than or equal to 1 and less than or equal to 3.5.

[0027] In some embodiments, the partition structure includes a groove-shaped separator, wherein the opening width of the groove-shaped separator on the side away from the substrate is not equal to the opening width on the side closer to the substrate in the substrate direction.

[0028] In some embodiments, an insulating layer is included between the plane parallel to the substrate where the first electrode is located and the substrate. The insulating layer is broken at the groove-shaped separator and forms the cover portion. The groove-shaped separator includes a third sub-separator located on the side of the cover layer closer to the substrate. The ratio of the thickness of the light-emitting functional layer to the sum of the thicknesses of the third sub-separator and the cover portion is greater than or equal to 0.1 and less than or equal to 1.5.

[0029] In some embodiments, the orthographic projection of the insulating layer in the direction of the substrate does not overlap with the orthographic projection of the first electrode in the direction of the substrate.

[0030] In some embodiments, the light-emitting functional layer further includes at least one light-emitting layer, which includes a subject and an object.

[0031] In some embodiments, the subject includes a first subject and a second subject, the first subject and the second subject constituting a radical complex, or an isomer, or a homologue.

[0032] In some embodiments, the difference between the molecular weight of the first body and the molecular weight of the second body is less than 300.

[0033] In some embodiments, the light-emitting functional layer further includes a light-emitting auxiliary layer, which is located on the side of the light-emitting layer close to the substrate, and the light-emitting auxiliary layer includes one or more layers.

[0034] In some embodiments, the light-emitting layer includes a first light-emitting layer and a second light-emitting layer, the first light-emitting layer having a first distance from the first electrode, the second light-emitting layer having a second distance from the second electrode, and the sum of the first distance and the second distance being less than 0.5 times the wavelength of light emitted by the light-emitting layer.

[0035] In some embodiments, the light-emitting functional layer further includes a first charge generation layer, a second charge generation layer, and an electron transport layer. The second charge generation layer is located on the side of the first charge generation layer away from the substrate. The electron transport layer is located between the second charge generation layer and the second electrode. There is a third distance between the upper surface of the first charge generation layer and the upper surface of the first electrode. There is a fourth distance between the lower surface of the second charge generation layer and the upper surface of the electron transport layer. The third distance is smaller than the fourth distance.

[0036] In some embodiments, the sum of the products of the thickness and refractive index of each layer of the light-emitting functional layer is less than or equal to the wavelength of the light emitted by the light-emitting functional layer.

[0037] In some embodiments, the second electrode includes a central portion with uniform thickness and an edge portion with varying thickness, wherein the thickness of the edge portion gradually decreases in a direction parallel to the substrate and away from the geometric center of the pixel opening.

[0038] In some embodiments, the second electrode edge portion includes a first edge portion parallel to the substrate and a second edge portion in contact with the partition structure, wherein, in their respective extending directions, within the same extending length, the thickness variation rate of the first edge portion is less than the thickness variation rate of the second edge portion.

[0039] In some embodiments, the second electrode includes a first conductive layer, the first conductive layer being made of a magnesium-silver alloy, wherein the mass ratio of magnesium to magnesium-silver alloy in the magnesium-silver alloy is 5%-25%.

[0040] In some embodiments, the second electrode further includes a second conductive layer located on the side of the first conductive layer away from the substrate, and the material used for the second conductive layer is ytterbium.

[0041] In some embodiments, the first electrode, the light-emitting functional layer, and the second electrode located within a pixel opening constitute a light-emitting device, and a plurality of light-emitting devices are arranged in an array.

[0042] In some embodiments, the plurality of light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device, wherein the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the green light-emitting device is 0.8-2, and the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the blue light-emitting device is 1.5-3.

[0043] In some embodiments, the display panel includes a first type of arrangement and a second type of arrangement extending along a first direction, the first type of arrangement and the second type of arrangement being alternately arranged along a second direction, the first direction and the second direction being perpendicular to each other, the first type of arrangement including at least two types of light-emitting devices, and the second type of arrangement including at least one type of light-emitting device.

[0044] In some embodiments, a plurality of red light-emitting devices and a plurality of green light-emitting devices are arranged alternately along a first direction to form the first type of arrangement, and a plurality of blue light-emitting devices are arranged along a second direction to form the second type of arrangement.

[0045] In some embodiments, the second electrodes of adjacent light-emitting devices in the first type of arrangement are independent of each other.

[0046] In some embodiments, the display panel further includes a pixel defining layer located on the side of the first electrode away from the substrate; the display panel further includes a transition electrode located between the pixel defining layer and the substrate; the display panel further includes a transistor located between the transition electrode and the substrate, and the second electrode is electrically connected to the transistor through the transition electrode.

[0047] In some embodiments, the display panel further includes a first connection electrode located between a plurality of first electrodes, the plurality of first connection electrodes being electrically connected to the plurality of first electrodes.

[0048] In some embodiments, at least one of the plurality of first connecting electrodes includes a plurality of sub-connecting electrodes, which are electrically connected to the first electrode.

[0049] In some embodiments, the light-emitting devices corresponding to the plurality of first electrodes emit the same color.

[0050] In some embodiments, the light-emitting devices corresponding to the plurality of first electrodes are located in the same area of ​​the display panel.

[0051] In some embodiments, the plurality of first connection electrodes are on the same layer as the plurality of first electrodes.

[0052] In some embodiments, the plurality of first connection electrodes are located on different layers from the plurality of first electrodes, and the plurality of first connection electrodes are located on the side of the plurality of first electrodes close to the substrate.

[0053] In some embodiments, the plurality of first electrodes and the plurality of first connecting electrodes form a mesh structure.

[0054] Secondly, a display panel is provided. The display panel includes:

[0055] Substrate;

[0056] Multiple pixel openings are located on the substrate, including a first pixel opening and a second pixel opening;

[0057] A partition structure is located between the first pixel opening and the second pixel opening, including a first sidewall near the first pixel opening and a second sidewall near the second pixel opening;

[0058] Multiple second electrodes are located on the side of the multiple pixel openings away from the substrate. Among the two second electrodes corresponding to the first pixel opening and the second pixel opening, one includes a fifth end that contacts the first sidewall, and the other includes a sixth end that is closer to the second sidewall than the center of the pixel opening. The distance between the fifth end and the substrate is not equal to the distance between the sixth end and the substrate.

[0059] In some embodiments, the display panel further includes a first electrode, the pixel openings exposing at least a portion of the first electrode.

[0060] In some embodiments, the display panel further includes a light-emitting functional layer located between the first electrode and the second electrode, the light-emitting functional layer including a common layer; the partition structure includes a covering portion, the covering portion at least blocking the common layer.

[0061] In some embodiments, the light-emitting functional layer further includes a first light-emitting layer, which includes a subject and an object.

[0062] In some embodiments, the subject includes a first subject and a second subject, the first subject and the second subject constituting a radical complex, or an isomer, or a homologue.

[0063] In some embodiments, the first electrode, the light-emitting functional layer, and the second electrode located within a pixel opening constitute a light-emitting device, and a plurality of light-emitting devices are arranged in an array.

[0064] In some embodiments, the plurality of light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device, wherein the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the green light-emitting device is 0.8-2, and the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the blue light-emitting device is 1.5-3.

[0065] In some embodiments, the display panel includes a first type of arrangement and a second type of arrangement extending along a first direction, the first type of arrangement and the second type of arrangement being alternately arranged along a second direction, the first direction and the second direction being perpendicular to each other, the first type of arrangement including at least two types of light-emitting devices, and the second type of arrangement including at least one type of light-emitting device.

[0066] In some embodiments, a plurality of red light-emitting devices and a plurality of green light-emitting devices are arranged alternately along a first direction to form the first type of arrangement, and a plurality of blue light-emitting devices are arranged along a second direction to form the second type of arrangement.

[0067] In some embodiments, the display panel further includes a pixel defining layer located on the side of the first electrode away from the substrate, and a driving circuit layer located between the first electrode and the substrate; the display panel further includes a transition electrode located between the pixel defining layer and the driving circuit layer; the driving circuit layer includes a transistor, and the second electrode is electrically connected to the driving transistor through the transition electrode.

[0068] In some embodiments, a plurality of first connecting electrodes are further included between the plurality of first electrodes, and the plurality of first connecting electrodes are electrically connected to the plurality of first electrodes.

[0069] In some embodiments, the plurality of first electrodes and the plurality of first connecting electrodes form a mesh structure.

[0070] Thirdly, a display panel is provided. The display panel includes:

[0071] Substrate;

[0072] The first electrode is located on one side of the substrate and includes at least a first sub-electrode and a second sub-electrode.

[0073] A first connecting electrode, wherein the first sub-electrode is electrically connected to the second sub-electrode via the first connecting electrode;

[0074] A light-emitting functional layer is located on the side of the first electrode away from the substrate.

[0075] The second electrode is located on the side of the light-emitting functional layer away from the substrate, and includes at least a third sub-electrode corresponding to the first sub-electrode and a fourth sub-electrode corresponding to the second sub-electrode, wherein the third sub-electrode and the fourth sub-electrode are not connected.

[0076] A transistor, located between the first electrode and the substrate, includes at least a first sub-transistor electrically connected to the third sub-electrode and a second sub-transistor electrically connected to the fourth sub-electrode.

[0077] Fourthly, a display panel is provided. The display panel includes:

[0078] Substrate;

[0079] The pixel opening is located on the substrate.

[0080] The first electrode is at least partially exposed by the pixel opening;

[0081] The second electrode is located on the side of the first electrode away from the substrate.

[0082] A partition structure, at least partially surrounding the pixel opening;

[0083] In a first cross-section perpendicular to the plane of the substrate, the second electrode includes a first end and a second end, at least one of the first end and the second end is in contact with the sidewall of the partition structure near the pixel opening, and the distance between the first end and the substrate is not equal to the distance between the second end and the substrate.

[0084] In some embodiments, the geometric center of the pixel opening is located within the first cross-section.

[0085] In some embodiments, the first end contacts the sidewall of the partition structure near the pixel opening, and the second end is spaced apart from the partition structure.

[0086] In some embodiments, both the first end and the second end are in contact with the sidewall of the partition structure near the pixel opening;

[0087] In the first cross-section, the overlap width between the first end and the partition structure in the orthographic projection on the substrate is different from the overlap width between the second end and the partition structure in the orthographic projection on the substrate.

[0088] In some embodiments, the partition structure includes: a first partition portion, a second partition portion, a third partition portion, and a fourth partition portion, wherein the first partition portion and the second partition portion are located on opposite sides of the pixel opening, the third partition portion and the fourth partition portion are located on opposite sides of the pixel opening, and the first partition portion, the second partition portion, the third partition portion, and the fourth partition portion are located on different sides of the pixel opening; a first end is located on one side of the first partition portion, the second partition portion, the third partition portion, or the fourth partition portion; and a second end is located on one side of one of the partition portions other than the partition portion where the first end is located.

[0089] Fifthly, a display panel is provided. The display panel includes:

[0090] Substrate;

[0091] The pixel opening is located on the substrate.

[0092] The first electrode is at least partially exposed by the pixel opening;

[0093] The second electrode is located on the side of the first electrode away from the substrate.

[0094] A partition structure, at least partially surrounding the pixel opening;

[0095] In a first cross-section perpendicular to the plane of the substrate, the second electrode includes a first end and a second end, at least one of the first end and the second end is in contact with the sidewall of the partition structure near the pixel opening, and the first end and the second end are not symmetrical about the center of the pixel opening in the first cross-section.

[0096] Sixthly, a display device is provided, comprising: a display panel as described in any of the foregoing embodiments; and a circuit board connected to the display panel.

[0097] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood.

[0098] Overview of the attached figures

[0099] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be considered as schematic diagrams and are not intended to limit the actual dimensions, etc., of the products involved in the embodiments of this disclosure.

[0100] Figure 1 is a structural diagram of a display device according to some embodiments;

[0101] Figure 2 is a structural diagram of another display device according to some embodiments;

[0102] Figure 3 is a cross-sectional view along section line AA in Figure 1;

[0103] Figure 4 is a plan view of a display panel according to some embodiments;

[0104] Figure 5 is a structural diagram of a display panel according to some embodiments;

[0105] Figure 6 is a plan view of a display panel according to some embodiments;

[0106] Figure 7a is a cross-sectional view along section line 1-1' in Figure 6;

[0107] Figure 7b is another sectional view along section line 1-1' in Figure 6;

[0108] Figure 8a is a magnified view of a pixel opening shown in Figure 7a;

[0109] Figure 8b is a magnified view of a pixel opening shown in Figure 7b;

[0110] Figure 9 is a plan view of a display panel according to some embodiments;

[0111] Figure 10a is a plan view of a display panel according to some embodiments;

[0112] Figure 10b is a plan view of yet another display panel according to some embodiments;

[0113] Figure 10c is a plan view of yet another display panel according to some embodiments;

[0114] Figure 10d is a plan view of yet another display panel according to some embodiments;

[0115] Figure 10e is a magnified view of a pixel opening shown in Figure 10c or 10d;

[0116] Figure 11a is a partial enlarged view of a display panel according to some embodiments;

[0117] Figure 11b is a partial enlarged view of another display panel according to some embodiments;

[0118] Figure 12a is a partially enlarged view of the partition structure of a display panel according to some embodiments;

[0119] Figure 12b is a partially enlarged view of the partition structure of another display panel according to some embodiments;

[0120] Figure 12c is a partially enlarged view of the partition structure of another display panel according to some embodiments;

[0121] Figure 12d is a partially enlarged view of the partition structure of another display panel according to some embodiments;

[0122] Figure 12e is a partially enlarged view of the partition structure of another display panel according to some embodiments;

[0123] Figure 12f is a partially enlarged view of the partition structure of another display panel according to some embodiments;

[0124] Figure 13 is a stacked diagram of light-emitting devices of a display panel according to some embodiments;

[0125] Figure 14 is a stacked diagram of light-emitting devices of a display panel according to some embodiments;

[0126] Figure 15a is a plan view of a display panel according to some embodiments;

[0127] Figure 15b is a plan view of yet another display panel according to some embodiments;

[0128] Figure 15c is a plan view of yet another display panel according to some embodiments;

[0129] Figure 16 is a cross-sectional view of a display panel according to some embodiments;

[0130] Figure 17 is a cross-sectional view of a display panel according to some embodiments;

[0131] Figure 18 is a plan view of a display panel according to some embodiments;

[0132] Figure 19a is a cross-sectional view of a display panel according to some embodiments;

[0133] Figure 19b is a cross-sectional view of yet another display panel according to some embodiments;

[0134] Figure 19c is a cross-sectional view of yet another display panel according to some embodiments;

[0135] Figure 20 is a plan view of a display panel according to some embodiments;

[0136] Figure 21 is a plan view of the layer where the first electrode shown in Figure 20 is located;

[0137] Figure 22 is a plan view of the layer containing the first electrode, pixel opening, and partition structure shown in Figure 20;

[0138] Figure 23 is a plan view of the partition structure shown in Figure 20 and the layer where the second electrode is located;

[0139] Figure 24a is a cross-sectional view of a display panel according to some embodiments;

[0140] Figure 24b is a cross-sectional view of yet another display panel according to some embodiments;

[0141] Figure 25a is a plan view of a display panel according to some embodiments;

[0142] Figure 25b is a plan view of yet another display panel according to some embodiments;

[0143] Figure 25c is a plan view of yet another display panel according to some embodiments;

[0144] Figure 26 is a cross-sectional view along section line 2-2' in Figure 20;

[0145] Figure 27a is a cross-sectional view of a display panel according to some embodiments;

[0146] Figure 27b is a cross-sectional view of yet another display panel according to some embodiments;

[0147] Figures 28a and 28b show the luminous intensity of the light-emitting device in the reference example and the light-emitting device in Comparative Example 1 under different color images and different gray levels.

[0148] Figures 29 and 30 are schematic diagrams showing different planes perpendicular to the substrate that are tangent to pixel openings 3011 and 3012.

[0149] Detailed Explanation

[0150] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0151] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0152] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0153] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. The term "connected" should be interpreted broadly; for example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The term "coupled," for example, indicates that two or more components have direct physical or electrical contact. The terms "coupled" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0154] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0155] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0156] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0157] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0158] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0159] Given the measurements discussed and the errors associated with a particular number of measurements (i.e., limitations of the measurement system), as used herein, “about,” “approximately,” or “roughly” includes stated values ​​and means within an acceptable range of deviation for a particular value as determined by one of ordinary skill in the art. For example, “about” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0160] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0161] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate. In the embodiments of this disclosure, "same-layer arrangement" refers to the relationship between multiple film layers formed from the same material after undergoing the same step (e.g., a patterning process). Here, "same-layer" does not always mean that the multiple film layers have the same thickness or that the multiple film layers have the same height in a cross-sectional view.

[0162] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0163] In this specification, unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that, unless expressly defined herein, terms (e.g., those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant field and should not be interpreted as having an ideal or overly formal meaning.

[0164] In this application, terms such as “lower,” “below,” “above,” and “upper” are used to explain the relationships between components shown in the accompanying drawings. The terms may be relative concepts and described based on the directions shown in the drawings, or based on the sequence of process steps, but are not limited thereto.

[0165] The term "relative" means that the first element can be directly or indirectly relative to the second element. In the case where the third element is between the first and second elements, although they are still relative to each other, the first and second elements can be understood as being indirectly relative to each other.

[0166] In this application, the term "corresponding" is used to indicate that two elements are related to each other. The term can indicate the positional relationship between two elements, or the connection relationship between two elements. The term can indicate that one of the two elements is subordinate to the other, or it can indicate two parts belonging to the same entity.

[0167] In the embodiments of this application, one of the first direction X and the second direction Y refers to the row direction of the display panel, and the other refers to the column direction of the display panel.

[0168] In the embodiments of this application, the transistor used may be a thin film transistor (TFT), a metal oxide semiconductor (MOS), or other switching devices with the same characteristics. The embodiments of this disclosure are all described using thin film transistors as an example.

[0169] As shown in Figures 1 and 2, some embodiments of this application provide a display device 1000, which can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images) and whether it is text or images.

[0170] For example, the display device 1000 can be any product or component with display function, such as a television, laptop computer, tablet computer, mobile phone, personal digital assistant (PDA), navigator, wearable device, virtual reality (VR) device, augmented reality (AR) device, mixed reality (MR) device, extended reality (XR) device, sight, rangefinder, etc.

[0171] For example, as shown in Figure 1, the display device 1000 can be a portable display product; for example, the display device 1000 can be a mobile phone as shown in Figure 1. As another example, referring to Figure 2, the display device 1000 can be a wearable device; for example, the display device 1000 can be a virtual reality (VR) watch as shown in Figure 2.

[0172] It should be noted that, depending on the application scenario, the display device 1000 can be a flat display device, a curved display device, or a foldable display device, etc., and the shape of the display surface of the display device 1000 can be any of a circle, an ellipse, a polygon, or an irregular shape. This disclosure does not limit the specific shape of the display device 1000.

[0173] The following uses the mobile phone shown in FIG1 as an example to illustrate some embodiments of the present disclosure. However, the implementation of the present disclosure is not limited to this, and any other display device can be considered as long as the same technical concept is applied.

[0174] In some embodiments, referring to FIG3, the display device 1000 includes a display panel 100, which may include, for example, a display side and a non-display side disposed opposite to each other. The display side is the side of the display panel 100 used for display, i.e., the upper side in FIG3.

[0175] The display panel 100 described above can be of various types and can be selected according to actual needs. For example, the display panel 100 can be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a micro light-emitting diode (Micro LED) display panel, etc., and this disclosure does not limit the scope of the embodiment.

[0176] The following uses the above-mentioned display panel 100 as an OLED display panel as an example to illustrate some embodiments of the present disclosure. However, the implementation of the present disclosure is not limited to this, and any other display panel can also be considered, as long as the same technical concept is applied.

[0177] In some embodiments, referring to FIG3, the display device 1000 may further include a housing 200, a cover plate 600, a circuit board 500, and other electronic components. The display panel 100 and the circuit board 500 may be disposed within the housing 200.

[0178] For example, as shown in FIG3, the housing 200 can be a box-shaped structure with an opening, and the cover plate 600 is disposed on one side of the display panel 100 displaying the image and located at the opening of the housing 200. The display panel 100 and the circuit board 500 can be disposed inside the housing 200, and the circuit board 500 can be bound to the end of the display panel 100 and bent to the back side of the display panel 100 to reduce the bezel of the display panel 100 and increase the screen ratio.

[0179] In some embodiments, referring to FIG4, the display panel 100 includes a display area A and a peripheral area B located on at least one side of the display area A. For example, the peripheral area B surrounds the display area A, as illustrated in FIG4. Multiple sub-pixels PX, including various light-emitting devices (such as organic light-emitting diodes), can be arranged in the display area A of the display panel 100. The multiple sub-pixels PX can display images by emitting light. The sub-pixels PX can emit red, green, or blue light. A pixel P can be implemented by driving the rendering of the sub-pixels PX. For example, a pixel P can include a red sub-pixel PX, a green sub-pixel PX, and a blue sub-pixel PX.

[0180] As exemplarily shown in FIG4, a plurality of subpixels PX can be arranged in a stripe pattern (e.g., columns or rows). However, embodiments according to this disclosure are not limited thereto. A plurality of subpixels PX can be arranged in various forms, such as an array or a mosaic pattern, to achieve image display.

[0181] When display area A is viewed in a plan view, display area A can have a rectangular shape as shown in Figure 4. According to some embodiments, display area A can have a polygonal shape such as a triangle, pentagon or hexagon, a circular shape, an elliptical shape or an irregular shape, etc.

[0182] Referring to Figure 5, the display panel 100 includes a substrate 10, a driving circuit layer 110 and a light-emitting device layer 120 disposed on the substrate 10, wherein the light-emitting device layer 120 is disposed on the side of the driving circuit layer 110 away from the substrate 10.

[0183] As shown in Figures 4 and 5, the substrate 10 can be a rigid substrate or a flexible substrate. The rigid substrate can be made of glass and / or polymethyl methacrylate (PMMA). The flexible substrate can be made of at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyimide (PI).

[0184] In some embodiments, referring to FIG5, the display panel 100 includes a gate driving circuit 140 and a source driving circuit 150. Along a first direction X, the source driving circuit 150 is disposed on at least one side of the display area A; along a second direction Y, the gate driving circuit 140 is disposed on at least one side of the display area A.

[0185] In this design, the source driving circuit 150 is coupled to a data signal line DL, and one data signal line DL is coupled to at least one column of pixel circuits 20 to provide data signals to the at least one column of pixel circuits 20. The gate driving circuit 140 is coupled to at least one control signal line KL, and one control signal line KL is coupled to one row of pixel circuits 20 to provide control signals to the at least one row of pixel circuits 20. The control signals may include any of the following: a light emission control signal, a scan signal, and a reset signal. A sub-pixel PX may include: a pixel circuit 20 and a light-emitting device 300 connected to the pixel circuit 20. The light-emitting device 300 is used to refer to any light-emitting device included in the display panel.

[0186] In recent years, Organic Light Emitting Diode (OLED) displays have gradually attracted more attention as a new type of display device. Due to their characteristics such as active light emission, high brightness, high resolution, wide viewing angle, fast response speed, low power consumption, and flexibility, they have become a popular mainstream display product in the market. In OLED displays, a partition structure can be used to separate the common layer between the light-emitting functional layers of two light-emitting devices, preventing crosstalk between them. However, the presence of this partition structure may cause the cathode to break at the partition point, resulting in the inability to transmit the cathode voltage signal and causing display defects.

[0187] Referring to FIG6, some embodiments of this disclosure provide a display panel, including: a substrate 10, a pixel opening 3000, a first electrode 310, a partition structure 400, and a second electrode 330. The pixel opening 3000 is located on the substrate 10, and the pixel opening 3000 at least partially exposes the first electrode 310. The pixel opening 3000 refers to any pixel opening included in the display panel; in FIG6, pixel openings 3011, 3021, and 3031 are illustrated as examples. The first electrode 310 refers to any first electrode included in the display panel; in FIG6, first electrodes 311, 312, and 313 are illustrated as examples. The second electrode 330 refers to any second electrode included in the display panel; in FIG6, second electrodes 331, 332, and 333 are illustrated as examples.

[0188] Referring to Figures 7a and 7b, these are schematic diagrams of the first cross-section formed along the 1-1' direction of the display panel shown in Figure 6. Figures 7a and 7b illustrate light-emitting devices 301, 302, and 303 as examples. The term "light-emitting functional layer 320" refers to any light-emitting functional layer included in the display panel; Figures 7a and 7b illustrate light-emitting functional layers 321, 322, and 323 as examples. The first cross-section of the display panel can be perpendicular to the plane of the substrate 10. For example, taking the orthographic projection of the pixel opening onto the substrate as a rectangle, the first cross-section can pass through two sides of the rectangular orthographic projection of the pixel opening (e.g., two opposite sides or two adjacent sides). Furthermore, the geometric center of the pixel opening can be located within the first cross-section.

[0189] In some examples, the display panel may include at least three pixel openings 3000, each pixel opening 3000 at least partially exposing a first electrode 310; the display panel may also include at least three light-emitting functional layers 320, each light-emitting functional layer 320 located between a first electrode 310 and a second electrode 330, constituting a light-emitting device 300, and each light-emitting functional layer 320 at least partially overlapping a pixel opening 3000; the display panel may also include a partition structure 400 located around the pixel opening 3000, the partition structure 400 including: a first partition portion 401 and a second partition portion 402, the first partition portion 401 and the second partition portion 402 being located on different sides of the pixel opening 3000, the first partition portion 401 including a second sublayer 421 and a first sublayer 411 sequentially disposed along a direction away from the substrate, the second partition portion 402 including a fifth sublayer 422 and a fourth sublayer 412 sequentially disposed along a direction away from the substrate; the second electrode 330 is located on the side of the first electrode 310 away from the substrate 10. Taking the second electrode 332 as an example, the second electrode 332 may include a first end 3321 located on one side of the first partition portion 401 and a second end 3322 located on one side of the second partition portion 402. The first end 3321 is in contact with the sidewall of the first partition portion 401, and the distance L1 between the first end 3321 and the substrate 10 is not equal to the distance L2 between the second end 3322 and the substrate 10.

[0190] In some embodiments, continuing to refer to Figures 6, 7a, and 7b, the partition structure 400 at least partially surrounds the pixel opening 3000, and the second electrode 330 is located on the side of the first electrode 310 away from the substrate 10. In a first cross-section formed along the 1-1' direction in the display panel, the second electrode 332 includes a first end 3321 and a second end 3322. At least one of the first end 3321 and the second end 3322 contacts the sidewall of the partition structure 400 near the pixel opening 3000. The distance L1 between the first end 3321 and the substrate 10 is not equal to the distance L2 between the second end 3322 and the substrate 10. For example, in Figure 7a, the first end 3321 of the second electrode 332 contacts the sidewall of the partition structure 400 near the pixel opening 3021, while the second end 3322 of the second electrode 332 may not contact the sidewall of the partition structure 400 near the pixel opening 3021. The distance L1 between the first end 3321 and the substrate 10 may be greater than the distance L2 between the second end 3322 and the substrate 10. In Figure 7b, both the first end 3321 and the second end 3322 of the second electrode 332 contact the sidewall of the partition structure 400 near the pixel opening 3021, and the distance L1 between the first end 3321 and the substrate 10 may be less than the distance L2 between the second end 3322 and the substrate 10.

[0191] In this display panel, by ensuring that the cathode (second electrode) overlaps with at least one side of the partition structure, the second electrode is connected through the partition structure. At the same time, during the deposition of the second electrode, only simple control of the evaporation angle is needed to achieve the overlap between the second electrode and the one-sided partition structure. The manufacturing process is simple and helps to shorten the process.

[0192] Figure 8a is a partially enlarged view of a pixel opening 3021 in Figure 7a, and Figure 8b is a partially enlarged view of a pixel opening 3021 in Figure 7b. The following description uses the first end 3321 and the second end 3322 of the second electrode 332 as examples. In some embodiments, as shown in Figure 8a, the first end 3321 of the second electrode 332 contacts the sidewall of the first partition portion 401. The contact portion has an overlap width A1 in the orthographic projection in the direction of the substrate 10. There is a gap GP between the second end 3322 of the second electrode 332 and the second partition portion 402; that is, the second electrode overlaps on one side with the partition structure around its corresponding pixel opening. In other embodiments, as shown in FIG8b, the first end 3321 of the second electrode 332 contacts the sidewall of the first partition portion 401, and the orthographic projection of the contact portion in the direction of the substrate 10 has an overlap width A1. The second end 3322 of the second electrode 332 contacts the sidewall of the second partition portion 402, and the orthographic projection of the contact portion in the direction of the substrate 10 has an overlap width A2. A1 and A2 are not equal, meaning that the degree of overlap between the second electrode and the partition structures on different sides of its corresponding pixel opening is different. For example, A1 can be less than A2. It is understood that, depending on the vapor deposition conditions, the overlap width A1 between the first end 3321 of the second electrode 332 and the sidewall of the first partition portion 401 can also be greater than the overlap width A2 between the second end 3322 of the second electrode 332 and the sidewall of the second partition portion 402. The "overlap width" mentioned above and below refers to the size of the overlapping portion of the two structures in a cross-sectional view parallel to the substrate direction.

[0193] For example, referring to FIG8b, the display panel 100 further includes second electrode sacrificial portions 331X and 332X located on the side of the first partition portion 401 and the second partition portion 402 away from the substrate 10 in the partition structure 400. The orthographic projections of the second electrode sacrificial portions 331X and 332X in the direction of the substrate 10 have a projection overlap portion with the orthographic projection of the second electrode 332 in the direction of the substrate 10. The width A3 of the first projection overlap portion located on the side of the first partition portion 401 is not equal to the width A4 of the second projection overlap portion located on the side of the second partition portion 402. For example, A4 may be greater than A3. It is understood that, depending on the vapor deposition conditions, the width A3 of the first projection overlap portion may be greater than the width A4 of the second projection overlap portion.

[0194] In some embodiments, referring to Figures 7a, 7b, 8a, and 8b, the display panel 100 further includes a light-emitting functional layer sacrificial portion 321X located between the first partition portion 401 and the second electrode sacrificial portion 331X, and a light-emitting functional layer sacrificial portion 322X located between the second partition portion 402 and the second electrode sacrificial portion 332X. In other embodiments, referring to Figure 17, the light-emitting functional layer sacrificial portion and the second electrode sacrificial portion located on the partition structure can also be removed by processes such as peeling or etching.

[0195] In some embodiments, the first end and the second end of the second electrode are located on opposite sides of the pixel opening. "Opposite sides" refers to the two side surfaces formed in a cross-section formed by the pixel opening being tangent to any plane perpendicular to the substrate.

[0196] In some embodiments, referring to Figures 7a, 7b, 8a, and 8b, the second electrode 330 / 332 includes a central portion 3301 with uniform thickness and an edge portion 3302 with varying thickness. In a direction parallel to the substrate 10 and away from the geometric center of the pixel opening, the thickness of the edge portion 3302 gradually decreases, increasing the lateral resistance of the edge portion 3302 and thus reducing lateral crosstalk. Furthermore, the electric field strength of the second electrode located around the pixel opening is weakened, preventing degradation of the light-emitting functional material around the pixel opening and thereby improving the lifespan of the display panel. Further, the edge portion 3302 of the second electrode 330 / 332 includes a first edge portion 3302-a parallel to the substrate 10 and a second edge portion 3302-b in contact with the partition structure 400. In their respective extending directions, within the same extending length, the thickness variation rate of the first edge portion 3302-a is less than that of the second edge portion 3302-b. By setting the second electrode to have a uniform thickness within the pixel opening, it is beneficial to uniformize the cathode voltage within the pixel opening, improving light emission uniformity and the lifespan of the light-emitting device. In addition, the thickness of the second electrode gradually decreases in the direction close to the partition structure, which helps to reduce the difficulty of the process and facilitates the evaporation of the second electrode.

[0197] In some embodiments, the display panel 100 further includes a driving circuit layer located between the substrate and the pixel opening. The driving circuit layer includes multiple signal lines, and the orthographic projection of the line connecting the first end and the second end of the second electrode in the substrate direction is parallel to the extension direction of at least one of the multiple signal lines.

[0198] For example, referring to FIG9, the display panel 100 includes multiple data signal lines DL, multiple control signal lines KL, and multiple power signal lines VDD located in the driving circuit layer 110 (not shown). A second electrode 330 and a corresponding pixel opening 3000 overlap with a data signal line DL, at least one control signal line KL, and a power signal line VDD respectively in the direction of the substrate 10. The second electrode 332 includes a first end 3321 overlapping with the first partition 401 and a second end 3322 overlapping with the second partition 402. The extension directions of the first end 3321 and the second end 3322 are parallel to the extension directions of the data signal line DL and the power signal line VDD. The extension direction of the extension line M where the center line of the first end 3321 and the second end 3322 is located is parallel to the extension direction of the control signal line KL.

[0199] Referring again to Figure 9, the extension line M connecting the first end 3321 and the second end 3322 of the second electrode 332 can pass through the geometric center of the pixel opening 3021. It is understood that the extension direction of the connection between the first end 3321 and the second end 3322 of the second electrode 332 is not limited to this, and based on process requirements, the extension direction of the aforementioned connection can also be parallel to the extension direction of other signal lines in the driving circuit layer, as long as the same technical concept is applied.

[0200] In this display panel, by ensuring that the cathode (second electrode) overlaps with at least one side of the partition structure, the second electrode is connected through the partition structure. At the same time, during the deposition of the second electrode, only simple control of the evaporation angle is needed to achieve the overlap between the second electrode and the one-sided partition structure. The manufacturing process is simple and helps to shorten the process.

[0201] In some embodiments, referring to Figures 10a and 10b, the display panel 100 includes at least one pixel group, and each pixel group includes at least three sub-pixels of different colors. A partition structure 400 is disposed around a pixel opening. The partition structure 400 includes at least one first partition portion 401, at least one second partition portion 402, at least one third partition portion 403, and at least one fourth partition portion 404 located on different sides of the pixel opening. The partition structures, at least partially located on different sides of the pixel opening, are spaced apart. This spaced-apart arrangement allows the second electrode to remain connected at the spaced intervals, which helps reduce resistance and lowers the risk of overheating in the display panel.

[0202] For example, referring to FIG10a, for pixel opening 3011, the partition structure 400 includes a first partition portion 401, a second partition portion 402, two third partition portions 403 and two fourth partition portions 404 located on different sides of pixel opening 3011, and the first partition portion 401, the second partition portion 402, the third partition portion 403 and the fourth partition portion 404 are all spaced apart, wherein the extending directions of the two third partition portions 403 and the two fourth partition portions 404 are parallel to the second direction Y, the two third partition portions 403 and the two fourth partition portions 404 are located on opposite sides of pixel opening 3011 and are spaced apart in the first direction X; the extending directions of the first partition portion 401 and the second partition portion 402 are parallel to the first direction X, the first partition portion 401 and the second partition portion 402 are located on opposite sides of pixel opening 3011 and are spaced apart in the second direction Y. Pixel apertures 3011, 3021, and 3031 emit red, green, and blue light, respectively. For organic light-emitting diode (OLED) displays, blue light-emitting devices have a higher start-up voltage than those emitting red or green light. When a blue light-emitting device is lit, it can easily cause crosstalk between adjacent red and green light-emitting devices. Therefore, setting multiple isolation structures between blue and green or red light-emitting devices can more effectively isolate charge transfer between adjacent devices, thereby reducing the risk of crosstalk. It is understood that the emitted light colors of pixel apertures 3011, 3021, and 3031 are not limited to these. For example, pixel aperture 3011 can also emit green or blue light, pixel aperture 3021 can also emit red or blue light, and pixel aperture 3031 can also emit red or green light. Multiple isolation structures can also be set between pixel apertures in any direction as needed, as long as the same technical concept is applied.

[0203] In some embodiments, the risk of crosstalk between pixels can be further reduced by continuously arranging the partition structures located on different sides of the pixel opening. Referring to FIG10b, for the pixel opening 3011, the partition structure 400 includes a first partition portion 401, a second partition portion 402, a third partition portion 403, and a fourth partition portion 404 located on different sides of the pixel opening 3011. The first partition portion 401 includes two parts spaced apart along a first direction X, and the third partition portion 403 includes two parts spaced apart along a second direction Y. The portion of the first partition portion 401 near the third partition portion 403 is in communication with the portion of the third partition portion 403 near the first partition portion 401. The portion of the first partition portion 401 near the fourth partition portion 404 is continuously arranged with the fourth partition portion 404. The portion of the third partition portion 403 near the second partition portion 402, the second partition portion 403, the third partition portion 403, the third partition portion 404, and the fourth partition portion 404 are continuously arranged with the fourth partition portion 404. The second partition 402 and the fourth partition 404 are interconnected. For the pixel opening 3021, the second partition 402 includes two parts spaced apart along the first direction X, and the fourth partition 404 includes two parts spaced apart along the second direction Y. The first partition 401, the second partition 402, the third partition 403, and the fourth partition 404 are continuously arranged in the remaining portions. For the pixel opening 3031, the first partition 401 includes two parts spaced apart along the first direction X, and the second partition 402 includes two parts spaced apart along the first direction X. The first partition 401, the second partition 402, the third partition 403, and the fourth partition 404 are continuously arranged in the remaining portions. By continuously arranging the partition structures on different sides of the pixel opening, leakage from diagonal directions between pixel openings can be further blocked, improving the display effect.

[0204] Furthermore, in a plane perpendicular to the substrate and parallel to at least one of the first and second directions, the projections of the interval regions between the partition portions corresponding to two adjacent pixel openings do not overlap, meaning that the interval regions between the partition portions corresponding to any adjacent pixel openings do not face each other. In this way, for a single pixel opening, a partition structure is provided in any direction, further improving the leakage isolation effect between different pixel openings. For example, continuing to refer to Figure 10b, in the partition structure corresponding to pixel opening 3021, the second partition portion 402 includes two spaced-apart parts, where the orthogonal projection of the spaced-apart part in the second direction Y falls on the first partition portion 401 of pixel opening 3031. In the partition structure corresponding to pixel opening 3031, the first partition portion 401 includes two spaced-apart parts, where the orthogonal projection of the spaced-apart part in the second direction Y falls on the second partition portion 402 of pixel opening 3021. In this case, the light-emitting functional layer or second electrode portion disposed within a pixel opening protrudes outside the partition structure and is isolated by the partition structures corresponding to adjacent pixel openings.

[0205] In some embodiments, referring to Figures 10c and 10d, the display panel 100 includes at least one pixel group, and a pixel group includes at least three sub-pixels of different colors. The first partition 401, the second partition 402, the third partition 403 and the fourth partition 404 can be interconnected to form a closed pattern around the pixel opening, that is, the partition structure 400 forms a closed pattern around the pixel opening.

[0206] For example, referring to Figure 10c, the partition structures 400 surrounding different pixel openings 3011, 3021, and 3031 can be interconnected to form a mesh structure. Alternatively, referring to Figure 10d, the partition structures 400 surrounding different pixel openings 3011, 3021, and 3031 are isolated from each other. By continuously arranging the partition structures around the pixel openings, the light-emitting functional layers can be effectively isolated, making the light-emitting functional layers of different sub-pixels independent of each other, facilitating individual control of sub-pixels, and avoiding crosstalk between sub-pixels.

[0207] In some embodiments, the second electrode includes a third end located on one side of the third partition portion and a fourth end located on one side of the fourth partition portion. The projection overlap of the second electrode and the partition structure in the substrate direction includes a third projection overlap sub-part located on one side of the third partition portion and a fourth projection overlap sub-part located on one side of the fourth partition portion.

[0208] Referring to Figure 10e, which is a partial enlarged view of a pixel opening in Figure 10c or 10d, a partition structure 400 is arranged around the pixel opening 3011. The first partition portion 401 and the second partition portion 402 are located in the second direction Y and on opposite sides of the pixel opening 3011. The third partition portion 403 and the fourth partition portion 404 are located in the first direction X. The first partition portion 401, the second partition portion 402, the third partition portion 403, and the fourth partition portion 404 are interconnected to form the partition structure 400. The second electrode 331 corresponding to the pixel opening 3011 includes a first end 3311 located on the side of the first partition portion 401, a second end 3312 located on the side of the second partition portion 402, a third end 3313 located on the side of the third partition portion 403, and a third end 3313 located on the side of the second partition portion 404. The fourth end 3314 on one side of the fourth partition 404, the second electrode sacrificial part (not shown) on the side of the partition structure 400 away from the substrate 10, has its orthogonal projection on the substrate 10 coinciding with the orthogonal projection of the partition structure 400 on the substrate 10. It forms a first projection overlap sub-part with the first end 3311, a second projection overlap sub-part with the second end 3312, a third projection overlap sub-part with the third end 3313, and a first projection overlap sub-part and a fourth projection overlap sub-part with the fourth end 3314. The width A1 of the first projection overlap sub-part in the second direction Y is greater than the width A2 of the second projection overlap sub-part in the second direction Y, and the width A3 of the third projection overlap sub-part in the first direction X is less than the width A4 of the fourth projection overlap sub-part in the first direction X. It is understandable that the width relationship of multiple overlapping sub-projections is not limited to this. For example, the width A3 of the third overlapping sub-projection can be equal to or greater than the width A4 of the fourth overlapping sub-projection, and the width A1 of the first overlapping sub-projection can be less than the width A2 of the second overlapping sub-projection.

[0209] In some embodiments, as shown in Figures 11a and 11b, the orthographic geometric center of the second electrode 330 on the substrate 10 does not coincide with the orthographic geometric center of the pixel opening 3000 corresponding to the second electrode 330 in the direction of the substrate 10.

[0210] Referring, as exemplarily to FIG11a, the display panel 100 includes a pixel defining layer PDL, which defines pixel openings 3011, 3021, and 3031. The display panel 100 also includes a plurality of second electrodes 331, 332, and 333, which overlap with the orthographic projections of the pixel openings 3011, 3021, and 3031 onto the substrate 10, respectively, and the overlapping portions surround the pixel openings. The extension line connecting the geometric centers of the pixel openings 3011 and 3021 is X1, and the extension line connecting the geometric centers of the second electrodes 331 and 332 is X2. Both X1 and X2 are parallel to the first direction X, and X1 and X2 do not coincide. In the direction parallel to the substrate 10, the geometric center of the pixel opening 3031 is located on the extension line X3, and the geometric center of the second electrode 333 is located on the extension line X4. Both X3 and X4 are parallel to the first direction X, and X3 and X4 do not coincide. The extension line connecting the geometric centers of pixel opening 3011 and the second electrode 331 is Y1; the extension line connecting the geometric centers of pixel opening 3021 and the second electrode 332 is Y2; and the extension line connecting the geometric centers of pixel opening 3031 and the second electrode 333 is Y3. Y1, Y2, and Y3 are all parallel to the second direction Y. In the above example, the geometric centers of the orthogonal projections of the pixel opening and the second electrode onto the substrate do not coincide with respect to either the row or column direction, but coincide with the other. This allows for effective overlap of the second electrode during fabrication by adjusting the evaporation angle only in one of the row or column directions, simplifying the fabrication process and shortening the manufacturing time.

[0211] For example, referring to Figure 11b, unlike Figure 11a, in the direction parallel to the second direction Y, the extension lines of the geometric centers of pixel openings 3011, 3021, and 3031 are Y1, Y2, and Y3, respectively, and the extension lines of the geometric centers of the second electrodes 331, 332, and 333 are Y4, Y5, and Y6, respectively, and Y1, Y2, Y3, Y4, Y5, and Y6 do not coincide. In the above example, the geometric centers of the orthographic projections of the pixel openings and the second electrodes on the substrate do not coincide with each other in the row and column directions. This further simplifies the process and time of adjusting the evaporation angle during the fabrication of the second electrodes, thereby achieving effective overlap of the second electrodes and shortening the fabrication process.

[0212] In some embodiments, the light-emitting functional layer includes a common layer, and the isolation structure includes a shielding portion. The common layer is isolated by the shielding portion of the isolation structure. The common layer may include any one or more of a charge generation layer, a hole injection layer, a hole transport layer, a light-emitting auxiliary layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer. The shielding portion design of the isolation structure prevents the common layer material from being deposited in the shadow area formed by the shielding portion, thereby blocking lateral charge drift in the common layer.

[0213] In some embodiments, in a cross-section perpendicular to the substrate, the cross-sectional width of the partition structure on the side closer to the substrate is not equal to the cross-sectional width on the side farther from the substrate.

[0214] In some embodiments, the partition structure may include columnar dividers.

[0215] In some embodiments, referring to FIG12a, the light-emitting functional layer 320 includes a first common layer 3201, a second common layer 3202, and a third common layer 3203 sequentially stacked along a direction away from the substrate 10. A cylindrical separator 400-1 is located on the side of the pixel defining layer (PDL) away from the substrate 10 and includes a first sub-separator 410. In a cross-section perpendicular to the substrate 10, the orthographic projection width of the surface of the cylindrical separator 400-1 on the substrate 10 away from the substrate 10 is greater than the orthographic projection width of the surface on the substrate 10 near the substrate 10; that is, the cross-sectional shape of the cylindrical separator 400-1 is an inverted trapezoid. The portion of its first sub-separator 410 protruding from the surface near the substrate 10 constitutes a covering portion 4001, which blocks the first common layer 3201, the second common layer 3202, and the third common layer 3203. The vertical distance between the surface of the cylindrical separator 400-1 furthest from the substrate 10 and the surface closest to the substrate 10 can be 1 μm to 2 μm, for example, 1.4 μm. The angle between the sidewall of the cylindrical separator 400-1 and the pixel defining layer (PDL) can be 30° to 80°, for example, 70°. When the vertical distance is greater than 2 μm, the masking portion 4001 cannot function as a mask. When the angle is greater than 80°, the common layer material will be deposited on the sidewall surface of the cylindrical separator 400-1, failing to provide a separation. When the vertical distance is less than 1 μm or the angle is less than 30°, although a masking portion can be formed, the common layer cannot be separated to form a uniform and continuous film, thus failing to provide a separation effect.

[0216] In some embodiments, referring to FIG12b, unlike the example of FIG12a, the cylindrical separator 400-1 includes a first sub-separator 410 and a second sub-separator 420 stacked along the direction close to the substrate 10. In a cross-section perpendicular to the substrate 10, both the first sub-separator 410 and the second sub-separator 420 have a shape that is narrower at the top and wider at the bottom, and the rate of change of the cross-sectional width of the second sub-separator 420 on the side away from the substrate 10 is less than the rate of change of the cross-sectional width on the side close to the substrate 10, that is, the side of the second sub-separator 420 is an arc surface. The first sub-separator 410 includes a covering portion 4001 protruding from the surface of the second sub-separator 420 on the side away from the substrate 10, and the covering portion 4001 separates the first common layer 3201, the second common layer 3202 and the third common layer 3203. The distance between the side of the first sub-separator 410 close to the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator 420 close to the pixel opening and the geometric center of the pixel opening.

[0217] Furthermore, referring to Figures 12a and 12b, the cylindrical spacer 400-1 does not contact the first electrode 310. The ratio of the thickness of the light-emitting functional layer 320 to the thickness of the cylindrical spacer 400-1 can be greater than or equal to 0.17 and less than or equal to 0.4. If the thickness of the partition structure is too low, it will be difficult to isolate the common layer, leading to leakage. If the thickness of the partition structure is too high, the side of the partition structure away from the substrate may enter the encapsulation layer above the cathode, thereby damaging the encapsulation effect of the device and causing a significant decrease in the device's lifespan.

[0218] Referring, as exemplarily to FIG12c, unlike the examples in FIG12a and 12b, the cylindrical separator 400-1 includes a first sub-separator 410, a second sub-separator 420, and a third sub-separator 430 stacked along the direction close to the substrate 10. The orthographic projection width of the third sub-separator 430 on the substrate 10 is greater than the orthographic projection width of the second sub-separator 420 on the substrate 10. In a cross-section perpendicular to the substrate 10, the cylindrical separator 400-1 is located at least on one side of the pixel opening, wherein the first sub-separator 410, the second sub-separator 420, and the third sub-separator 430 all have a shape that is narrower at the top and wider at the bottom. The first sub-separator 410 includes a covering portion 4001 protruding from the surface of the second sub-separator 420 away from the substrate 10, and the covering portion 4001 blocks the first common layer 3201, the second common layer 3202, and the third common layer 3203. The distance between the side of the third sub-separator 430 closest to the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator 420 closest to the pixel opening and the geometric center of the pixel opening.

[0219] In some embodiments, referring to FIG12d, unlike the embodiment of FIG12c, the cylindrical separator 400-1 is located between the first electrode 310 and the pixel defining layer PDL, and its orthographic projection on the substrate 10 partially overlaps with both the first electrode 310 and the pixel defining layer PDL. Further, the angle between the sidewall of the second sub-separator 420 and the sidewall of the first sub-separator 410 can be 50° to 90°, the thickness of the first sub-separator 410 of the cylindrical separator 400-1 can be 10 nm to 50 nm, the thickness of the second sub-separator 420 can be 50 nm to 100 nm, and the thickness of the third sub-separator 430 can be 10 nm to 50 nm. In a plane parallel to the substrate, the second sub-separator 430 is recessed inward relative to the third sub-separator 430 towards the pixel opening, with a recess distance of 0.2 μm to 1 μm. The ratio K of the thickness of the light-emitting functional layer 320 to the thickness of the cylindrical separator 400-1 can be greater than or equal to 1 and less than or equal to 3.5, ensuring effective isolation of the common layer. The thickness of the cylindrical separator 400-1 refers to the vertical distance between the surface of the cylindrical separator 400-1 away from the substrate 10 and the surface closer to the substrate 10. If the isolation structure is too high, the side of the isolation structure away from the substrate may enter the encapsulation layer above the cathode, thereby damaging the encapsulation effect of the device and causing a significant decrease in the device's lifespan.

[0220] In some embodiments, the partition structure may include a slotted partition, wherein the opening width of the slotted partition on the side away from the substrate is not equal to the opening width on the side closer to the substrate. For example, the opening width of the slotted partition on the side away from the substrate is greater than the opening width on the side closer to the substrate.

[0221] In some embodiments, an insulating layer PVX is included between the pixel defining layer PDL and the substrate 10, and the insulating layer PVX participates in forming the covering portion of the partition structure. The insulating layer PVX overlaps with or spaced from the orthogonal projection portion of the first electrode on the substrate.

[0222] In some embodiments, referring to FIG12e, the display panel includes a planarization layer PLN located between a substrate 10 and a pixel defining layer PDL, and an insulating layer PVX located between the planarization layer PLN and a first electrode 310. The planarization layer PLN includes a first groove, the insulating layer PVX includes a second groove, and the pixel defining layer PDL has a third groove. The first groove, the second groove, and the third groove are located between pixel openings and penetrate each other, forming a groove-shaped separator along a direction away from the substrate. The first groove is formed as a first sub-separator 410, the portion of the insulating layer PVX protruding from the first groove and the third groove is formed as a second sub-separator 420, and the third groove is formed as a third sub-separator 430. Further, the ratio of the thickness of the light-emitting functional layer 320 to the sum of the thicknesses of the second sub-separator 420 and the third sub-separator 430 can be greater than or equal to 0.1 and less than or equal to 1.5. The light-emitting functional layer 320 includes a first common layer 3201 stacked along a direction away from the substrate 10. In a cross section perpendicular to the substrate 10, the second sub-separator 420 is located at least on one side of the groove-shaped separator 400-2. The orthographic projection width of the surface of the first sub-separator 410, the second sub-separator 420 and the third sub-separator 430 on the side away from the substrate 10 in the direction of the substrate 10 is greater than the orthographic projection width of the surface on the side closer to the substrate 10 in the direction of the substrate 10. That is, the cross section shape of each sub-separator is an inverted trapezoid. The second sub-separator 420 forms a cover portion 4001, which blocks the first common layer 3201. The length B of the cover portion 4001 protruding from the third sub-separator 430 in the horizontal direction can be 0.3 μm to 0.8 μm, the included angle can be 60° to 90°, and the thickness of the cover portion 4001 can be 0.1 μm to 0.5 μm. The thickness of the third sub-separator 430 in the direction perpendicular to the substrate 10 can be 0.2 μm to 1 μm, so that the common layer is effectively broken at this point.

[0223] In some embodiments, referring to FIG12f, unlike the embodiment shown in FIG12e, the display panel includes at least two planarization layers PLN-1 and PLN-2 located between the substrate 10 and the pixel defining layer PDL, and the insulating layer PVX is located between the planarization layers PLN-1 and PLN-2, and its orthographic projection on the substrate 10 is spaced apart from the orthographic projection of the first electrode 310 on the substrate 10, so as to avoid unevenness on the upper surface of the first electrode 310 due to the thickness of the insulating layer PVX, thereby causing color shift of the light-emitting device.

[0224] It is understood that the partition structure can also be other shapes that can form a covering portion in the plane perpendicular to the substrate, such as I-shaped, T-shaped, parallelogram, or other irregular shapes. The thickness of the aforementioned components refers to the vertical distance between the plane away from the substrate and the plane closer to the substrate in the direction perpendicular to the substrate.

[0225] In some embodiments, the display panel includes at least one light-emitting device 300. The light-emitting device 300 includes a first electrode, a light-emitting functional layer, and a second electrode sequentially disposed along a direction away from the substrate. The light-emitting functional layer includes at least one light-emitting layer and may further include at least one or more of a hole injection layer, a hole transport layer, and a light-emitting auxiliary layer sequentially stacked between the first electrode and the light-emitting layer along a direction away from the substrate, and at least one or more of a hole blocking layer, an electron transport layer, and an electron injection layer sequentially stacked between the light-emitting layer and the second electrode along a direction away from the substrate.

[0226] Referring, as exemplarily to FIG13, the display panel includes at least one light-emitting device 300. The light-emitting device 300 includes a first electrode 310, a light-emitting functional layer 320, and a second electrode 330 sequentially disposed away from the substrate. The light-emitting functional layer 320 includes a light-emitting layer EML, and the material of the light-emitting layer EML includes a host and a guest. Further, along the direction away from the substrate, the light-emitting functional layer 320 also includes a hole injection layer HIL, a hole transport layer HTL, and a light-emitting auxiliary layer EBL located between the first electrode 310 and the light-emitting layer EML, and a hole blocking layer HBL, an electron transport layer ETL, and an electron injection layer EIL located between the light-emitting layer EML and the second electrode 330.

[0227] In other embodiments, the display panel includes at least one light-emitting device 300. The light-emitting device 300 includes a first electrode, a light-emitting functional layer, and a second electrode sequentially disposed along a direction away from the substrate. The light-emitting functional layer includes at least two light-emitting layers, for example, a first light-emitting layer and a second light-emitting layer sequentially disposed along a direction away from the substrate. Between the first electrode and the first light-emitting layer, at least one or more of a first hole injection layer, a first hole transport layer, and a first light-emitting auxiliary layer sequentially disposed along a direction away from the substrate are included. The first hole transport layer may include multiple first hole transport sublayers. Between the first light-emitting layer and the second light-emitting layer, at least one or more of a first hole blocking layer, a first electron transport layer, a first electron injection layer, a first charge generation layer, a second charge generation layer, a second hole injection layer, a second hole transport layer, and a second light-emitting auxiliary layer sequentially disposed along a direction away from the substrate are included. Between the second light-emitting layer and the second electrode, at least one or more of a second hole blocking layer, a second electron transport layer, and a second electron injection layer sequentially disposed along a direction away from the substrate are included.

[0228] Referring, as exemplarily to FIG14, the display panel includes at least one light-emitting device 300. The light-emitting device 300 includes a first electrode 310, a light-emitting functional layer 320, and a second electrode 330 sequentially disposed away from the substrate. The light-emitting functional layer 320 includes two light-emitting layers EML, for example, a first light-emitting layer EML-1 and a second light-emitting layer EML-2. The second light-emitting layer EML-2 is located in the direction away from the substrate from the first light-emitting layer EML-1, and the materials of the second light-emitting layer EML-2 and the first light-emitting layer EML-1 may be the same or different. The light-emitting functional layer 320 also includes a first charge-generating layer CGL-1 and a second charge-generating layer CGL-2 located between the second light-emitting layer EML-2 and the first light-emitting layer EML-1. Furthermore, along the direction away from the substrate, the light-emitting functional layer 320 may also include a first hole transport layer HTL-1 and a first light-emitting auxiliary layer EBL-1 located between the first electrode 310 and the first light-emitting layer EML-1, a first hole blocking layer HBL-1 located between the first light-emitting layer EML-1 and the first charge generation layer CGL-1, a second hole transport layer HTL-2 and a second light-emitting auxiliary layer EBL-2 located between the second charge generation layer CGL-2 and the second light-emitting layer EML-2, and a second hole blocking layer HBL-2 ​​and an electron transport layer ETL-2 located between the second light-emitting layer EML-2 and the second electrode 330.

[0229] The materials of the hole injection layer HIL, the first hole injection layer HIL-1, and the second hole injection layer HIL-2 can be various suitable materials. In some embodiments, the materials of the hole injection layer HIL, the first hole injection layer HIL-1, and the second hole injection layer HIL-2 can be inorganic oxides, such as molybdenum oxide, titanium oxide, vanadium oxide, rhenium oxide, ruthenium oxide, chromium oxide, zirconium oxide, hafnium oxide, tantalum oxide, silver oxide, tungsten oxide, manganese oxide, etc., or can be dopants of strong electron-withdrawing systems, such as hexacyanohexaazatriphenylene, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-p-quinone dimethylane (abbreviated as F4TCNQ), 1,2,3-tris[(cyano)(4-cyano-2,3,5,6-tetrafluorophenyl)methylene]cyclopropane, etc., or can be p-type dopants of strong electron-withdrawing systems and dopants of hole transport materials. The chemical structural formula of F4TCNQ is as follows:

[0230] The hole transport layer HTL, the first hole transport layer HTL-1, and the second hole transport layer HTL-2 can be various suitable materials. In some embodiments, the materials of the hole transport layer HTL, the first hole transport layer HTL-1, and the second hole transport layer HTL-2 can be aromatic amines or carbazoles with good hole transport properties, such as 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4-phenyl-4'-(9-phenylfluorene-9-yl)triphenylamine (BAFLP), 4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl (DFLDPBi), etc. The chemical structural formula of NPB is...

[0231] The light-emitting auxiliary layer EBL, the first light-emitting auxiliary layer EBL-1, and the second light-emitting auxiliary layer EBL-2 can be various suitable materials, and can be red, green, or blue light-emitting auxiliary layers. The red, green, and blue light-emitting auxiliary layers can comprise one material or a mixture of two or more materials. In some embodiments, the light-emitting auxiliary layer EBL, the first light-emitting auxiliary layer EBL-1, and the second light-emitting auxiliary layer EBL-2 are also materials with high hole transport properties. These can be aromatic amine materials, dimethylfluorene materials, or carbazole materials with hole transport properties, such as 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4-phenyl-4'-( 9-Phenylen-9-yl)triphenylamine (BAFLP), 4,4'-bis[N-(9,9-dimethylfluoren-2-yl)-N-phenylamino]biphenyl (DFLDPBi), 4,4'-bis(9-carbazolyl)biphenyl (CBP), 9-phenyl-3-[4-(10-phenyl-9-anthrayl)phenyl]-9H-carbazole (PCzPA), 4,4',4"-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (m-MTDATA), etc. The chemical structural formula of NPB is... The chemical structural formula of m-MTDATA is

[0232] The emissive layer EML, the first emissive layer EML-1, and the second emissive layer EML-2 can be red, green, or blue emissive layers. The red, green, and blue emissive layers can comprise one material or a mixture of two or more materials. The red, green, and blue emissive layers can be a phosphorescent host and a phosphorescent dopant, or a fluorescent host and a fluorescent dopant.

[0233] The main material of the blue luminescent layer can be selected from anthracene derivatives, such as N1,N6-bis([1,1'-biphenyl]-2-yl)-N1,N6-bis([1,1'-biphenyl]-4-yl)pyrene-1,6-diamine, 9,10-bis-(2-naphthyl)anthracene (abbreviated as ADN), and 2-methyl-9,10-bis-2-naphthylanthracene (abbreviated as MADN). The guest material of the blue emitting layer can be selected from pyrene derivatives, fluorene derivatives, perylene derivatives, styrylamine derivatives, metal complexes, etc., such as 2,5,8,11-tetra-tert-butylperylene (TBPe), 4,4'-bis[4-(diphenylamino)styryl]biphenyl (BDAVBi), 4,4'-bis[4-(di-p-tolylamino)styryl]biphenyl (DPAVBi), bis(4,6-difluorophenylpyridine-C2,N)pyridinecarboxyiridium (FIrpic), etc. In some embodiments, the material of the blue emitting layer is a dopant of the host material and the guest material. The host material and the guest material of the blue emitting layer can be various suitable materials.

[0234] The host material of the green luminescent layer can be selected from coumarin dyes, quinacridine copper derivatives, polycyclic aromatic hydrocarbons, diamine anthracene derivatives, carbazole derivatives, etc. For example, the host material can be coumarin 6 (C-6), coumarin 545T (C-525T), quinacridine copper (QA), N,N'-dimethylquinacridone (DMQA), 5,12-diphenylnaphthonaphthalene (DPT), N10,N10'-diphenyl-N10,N10'-dibenzoyl-9,9'-dianthracene-10,10'-diamine (BA-NPB), tris(8-hydroxyquinoline)aluminum(III) (Alq3), etc. The guest material of the green luminescent layer is a metal complex. For example, the guest material can be tris(2-phenylpyridine)iridium (abbreviated as Ir(ppy)3), di(2-phenylpyridine)iridium acetylacetonate (abbreviated as Ir(ppy)2(acac)), etc. In some embodiments, the material of the green emitting layer is a dopant of the host material and the guest material. The host material and the guest material of the green emitting layer can be various suitable materials.

[0235] The host material of the red emitting layer can be selected from DCM series materials. For example, the material of the red emitting layer can be 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (abbreviated as DCM), 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulonidin-9-enyl)-4H-pyran (abbreviated as DCJTB), etc. The guest material of the red emitting layer can be selected from metal complexes, etc. For example, bis(1-phenylisoquinoline)(acetylacetone)iridium(III) (abbreviated as Ir(piq)2(acac)), octaethylporphyrin platinum (abbreviated as PtOEP), bis(2-(2'-benzothiophene)pyridine-N,C3')(acetylacetone)iridium (abbreviated as Ir(btp)2(acac)), etc. In some embodiments, the material of the red emitting layer is a dopant of the host material and the guest material. The host material and the guest material of the red emitting layer can be various suitable materials.

[0236] The first charge-generating layer, CGL-1, is typically an N-type charge-generating layer that can inject electrons into the first light-emitting layer, EML-1. The first charge-generating layer, CGL-1, can generally be an electronically typed material containing phenanthroline or phosphoyl groups. For example, the material for the first charge-generating layer, CGL-1, can be red phenanthroline (BPhen) or 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP). The chemical structural formula of BCP is... The first charge generation layer CGL-1 may also contain dopants. The dopants of the first charge generation layer CGL-1 may be alkali metals such as lithium (Li), sodium (Na), potassium (K) or cesium (Cs), or alkali metals or alkaline earth metals and their oxides such as magnesium (Mg), strontium (Sr), barium (Ba) or radium (Ra).

[0237] The second charge generation layer CGL-2 is generally a p-type charge generation layer, which can inject holes into the second light-emitting layer EML-2. The second charge generation layer CGL-2 can generally be a hole-generating material. For example, the material of the second charge generation layer CGL-2 can be an aromatic amine, a dimethylfluorene, a triaxial compound, or a carbazole, such as 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4-phenyl-4'-(9-phenylfluorene-9-yl)triphenylamine (BAFLP), 4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl (DFLDPBi), and 4,4'-bis(9-carbazole)biphenyl. The second charge generation layer CGL-2 can also contain dopants, such as 9-phenyl-3-[4-(10-phenyl-9-anthrayl)phenyl]-9H-carbazole (PCzPA) and 4,4',4"-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (m-MTDATA).

[0238] Hole blocking layer HBL, first hole blocking layer HBL-1, second hole blocking layer HBL-2, electron transport layer ETL, first electron transport layer ETL-1, and second electron transport layer ETL-2 are generally aromatic heterocyclic compounds. Aromatic heterocyclic compounds can be, for example, imidazole derivatives such as benzimidazole derivatives, imidazopyridine derivatives, and benzimidazolephenanthridine derivatives; azine derivatives such as pyrimidine derivatives and triazine derivatives; or compounds containing a nitrogen-containing six-membered ring structure such as quinoline derivatives, isoquinoline derivatives, and phenanthreneroline derivatives (including compounds with phosphine oxide substituents on the heterocycle). For example, the materials of the hole blocking layer HBL, the first hole blocking layer HBL-1, the second hole blocking layer HBL-2, the electron transport layer ETL, the first electron transport layer ETL-1, and the second electron transport layer ETL-2 can be 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD), 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene (TPBi), or 1,3-bis[5-(p-tert-butylphenyl)-1,3,4-oxadiazole-2-yl] Benzene (OXD-7), 3-(4-tert-butylphenyl)-4-phenyl-5-(4-biphenyl)-1,2,4-triazole (TAZ), 3-(4-tert-butylphenyl)-4-(4-ethylphenyl)-5-(4-biphenyl)-1,2,4-triazole (p-EtTAZ), phenanthroline (BPhen), 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,4'-bis(5-methylbenzoxazol-2-yl)stilbene (BzOs), etc. The chemical structural formula of TPBi is... The chemical structural formula of BCP is:

[0239] The materials for the electron injection layer (EIL), the first electron injection layer, and the second electron injection layer are generally alkali metals or metals, such as LiF, Yb, Mg, Ca, or their compounds.

[0240] In some embodiments, the materials selected for each film layer of the light-emitting functional layer are shown in Table 1 below, where the first column represents the specific film layer of the light-emitting functional layer, and the right side shows a variety of example optional materials for that film layer.

[0241] Table 1

[0242] Below, using the partition structure shape shown in Figure 12d as a specific example, we will discuss optimizing the film thickness and partition structure thickness to improve the luminous efficiency and lifespan of light-emitting devices. Examples will be provided for red, green, and blue light-emitting devices, with reference examples and comparative examples of the thickness settings for each color of light-emitting device and partition structure.

[0243] First, we introduce the parameters of each film layer of the red, green, and blue light-emitting devices, as well as the thickness parameters of the partition structure.

[0244] Reference partition structure thickness: 300nm

[0245] Comparative Example 1: Partition structure thickness: 120nm

[0246] Comparative Example 1 and Reference Example Blue Light Emitting Devices:

[0247] The total thickness of the light-emitting functional layer is 177.7 nm, and the thickness of each film layer is as follows.

[0248] First electrode: material is ITO.

[0249] First hole transport layer: Includes two first hole transport sublayers, wherein the first hole transport sublayer material closer to the substrate is a mixture of NPB and HATCN. The mass ratio of HATCN to the sum of the masses of NPB and HATCN is 1%, and the film thickness is 10 nm; the first hole transport sublayer material farther from the substrate is NPB, and the film thickness is 18 nm.

[0250] First light-emitting auxiliary layer: material is The film thickness is 5 nm.

[0251] First luminescent layer (blue luminescent layer): a mixture of subject and object, the subject material being... The object material is The mass of the object material is 1% of the sum of the masses of the host material and the object material, and the film thickness is 20 nm.

[0252] First cavity blocking layer: material is The film thickness is 5 nm.

[0253] First electron transport layer: material is A mixture of Liq and Liq, wherein Liq is lithium octahydroxyquinoline. The mass ratio of the film to Liq is 1:1, and the film thickness is 100 nm.

[0254] First charge generation layer: The material is a mixture of BCP and Li, with the mass ratio of Li to the sum of the masses of BCP and Li being 0.5%, and the film thickness being 18 nm.

[0255] The second charge generation layer is a mixture of NPB and HATCN. The mass ratio of HATCN to the sum of the masses of NPB and HATCN is 5%, and the film thickness is 9 nm.

[0256] The second hole transport layer is made of NPB material and has a thickness of 25 nm.

[0257] Second light-emitting auxiliary layer: material is The film thickness is 5 nm.

[0258] Second light-emitting layer: a mixture of subject and object, the subject material being... The object material is The mass of the object material is 1% of the sum of the masses of the host material and the object material, and the film thickness is 20 nm.

[0259] Second cavity blocking layer: material is The film thickness is 5 nm.

[0260] Second electron transport layer: material is A mixture of Liq and Liq. The mass ratio of the film to Liq is 1:1, and the film thickness is 30 nm.

[0261] The second electron injection layer is made of Yb and has a thickness of 0.7 nm.

[0262] Second electrode: The material is a mixture of Mg and Ag.

[0263] Comparative Example 1 and Reference Example Green Light Emitting Devices:

[0264] The total thickness of the light-emitting functional layer is 221.2 nm. Compared with the blue light-emitting device of the reference example, except for the first light-emitting auxiliary layer, the first light-emitting layer, the second light-emitting auxiliary layer, and the second light-emitting layer, the parameters of the other film layers of the green light-emitting device Comparative Example 1 and the reference example are the same as the parameters of the corresponding film layers of the aforementioned blue light-emitting device. For the sake of simplicity, only the parameters of the first light-emitting auxiliary layer, the first light-emitting layer, the second light-emitting auxiliary layer, and the second light-emitting layer of the green light-emitting device Comparative Example 1 and the reference example are listed below. The parameters of other film layers can be referred to the parameters of the corresponding film layers of the blue light-emitting device.

[0265] First light-emitting auxiliary layer: The material is TAPC, and the film thickness is 10nm.

[0266] First luminescent layer: a mixture of two subjects and one object, the subject material being... The guest material is Ir(ppy)3. The mass ratio of the guest material to the sum of the masses of the host and guest materials is 8%, and the film thickness is 33 nm.

[0267] The second light-emitting auxiliary layer is made of TAPC and has a film thickness of 17.5 nm.

[0268] The second light-emitting layer is a mixture of two subjects and a subject; the subject material is... The guest material is Ir(ppy)3. The mass ratio of the guest material to the sum of the masses of the host and guest materials is 8%, and the film thickness is 33 nm.

[0269] Comparative Example 1 and Reference Example: Red light-emitting device

[0270] The total thickness of the light-emitting functional layer is 283.2 nm. Compared with the blue light-emitting device of the reference example, except for the first light-emitting auxiliary layer, the first light-emitting layer, the second light-emitting auxiliary layer, and the second light-emitting layer, the parameters of the other film layers of the red light-emitting device Comparative Example 1 and the reference example are the same as the parameters of the corresponding film layers of the aforementioned blue light-emitting device. For the sake of simplicity, only the parameters of the first light-emitting auxiliary layer, the first light-emitting layer, the second light-emitting auxiliary layer, and the second light-emitting layer of the red light-emitting device Comparative Example 1 and the reference example are listed below. The parameters of other film layers can be referred to the parameters of the corresponding film layers of the blue light-emitting device.

[0271] First light-emitting auxiliary layer: material is The film thickness is 28.5 nm.

[0272] First luminescent layer: a mixture of two subjects and one object, the subject material being... and The guest material is Ir(piq)2(acac). The mass ratio of the guest material to the sum of the masses of the host and guest materials is 2%, and the film thickness is 45 nm.

[0273] Second light-emitting auxiliary layer: material is The film thickness is 37nm.

[0274] The second light-emitting layer is a mixture of two subjects and a subject; the subject material is... The guest material is Ir(ppy)3. The mass ratio of the guest material to the sum of the masses of the host and guest materials is 2%, and the film thickness is 45 nm.

[0275] Figure 28a shows the luminous intensity of the reference example light-emitting device (K≤1) under different colors and gray levels; Figure 28b shows the luminous intensity of the comparative example light-emitting device (1≤K≤3.5) under different colors and gray levels, exploring the accompanying luminous phenomena of the reference example and comparative example light-emitting devices under different colors and gray levels. In Figures 28a and 28b, the horizontal axis represents wavelength (WL) in nm, and the vertical axis represents luminous intensity. R, G, and B represent red, green, and blue images, respectively, and 255, 128, 64, 32, 16, 8, and 4 represent different gray levels. Taking a green image as an example, it can be seen that when K is between 1 and 3.5, the blue light peak at approximately 460 nm and the red light peak at approximately 620 nm are significantly reduced, indicating that the common layer has a good blocking effect.

[0276] Table 2 shows the photoelectric performance parameters of the reference example light-emitting device and the comparative example 1 light-emitting device. The voltage and lifetime (LT95) values ​​of the reference example light-emitting device are assumed to be 100%, and the changes in the voltage and lifetime of the comparative example 1 light-emitting device relative to the reference example light-emitting device are investigated. Furthermore, Table 1 shows the ratio K values ​​of the thickness of the light-emitting functional layer 320 to the thickness of the cylindrical spacer 400-1 for light-emitting devices of different colors and with different thicknesses at 15 mA / cm². 2 By comparing the operating voltage V and lifetime LT95 at the current density, it can be seen that when K is between 1 and 3.5, the light-emitting device has a lower operating voltage and a better lifetime.

[0277] Table 2

[0278] In some embodiments, the light-emitting layer material comprises a first substrate and a second substrate, which constitute a radical-excited complex, isomers, or homologues. When a radical-excited complex, isomers, or homologues are formed between the two substrate materials, the compound structures of the two materials are similar, and they have similar evaporation temperatures. This allows for effective mixing during the evaporation process, maintaining good uniformity. Furthermore, when the molecular weight difference between the first substrate and the second substrate is less than 300 (e.g., 50, 100, 150, 200, 250, 300), the evaporation temperature difference between the two materials is small, and co-evaporation can even be achieved. This allows for effective mixing of the materials during the evaporation process, preventing changes in the ratio of the two substrate materials, improving the uniformity of the light-emitting layer, forming a good amorphous thin film, thereby enhancing device performance and improving device lifespan. In addition, carrier transfer on the first and second substrates does not require additional energy, allowing for carrier balance and further improving the light-emitting effect. In some embodiments, the first host in the above-mentioned radical-excited composite can be an electronic host, and the second host can be a hole host. The absolute difference between the HOMO energy levels of the first and second hosts is less than or equal to 0.5, for example, it can be 0, 0.1, 0.2, 0.3, 0.4, 0.45, or 0.5, thereby enabling rapid carrier transfer between the first and second hosts. For the blue light host material, the wavelength difference between the emitted light from the first and second hosts needs to be 0-10 nm to ensure that they have similar optical properties and avoid redshift in the spectrum after mixing, which would cause color shift in the display panel. In addition, for the blue light host material, the emitting materials of the first and second hosts are generally anthracene derivatives that are isomers or homologues of each other, which have better performance and display effect.

[0279] In some embodiments, the molecular weight range of each film material in the light-emitting functional layer is shown in Table 3 below. When the molecular weight range shown in Table 3 is selected, the light-emitting device has high light extraction efficiency and good thermal stability. When the molecular weight of each film layer is lower than the minimum molecular weight shown below, the glass transition temperature of the molecules is low, and the film formation during evaporation is poor. When the molecular weight of each film layer is higher than the maximum molecular weight shown below, the evaporation process requires excessively high temperatures, which may lead to material decomposition.

[0280] Table 3

[0281] In Table 3, B-EBL refers to the light-emitting auxiliary layer in the light-emitting functional layer of a blue light-emitting device, B-EML-subject refers to the subject contained in the light-emitting layer in the light-emitting functional layer of a blue light-emitting device, and B-EML-object refers to the object contained in the light-emitting layer in the light-emitting functional layer of a blue light-emitting device. R-EBL refers to the light-emitting auxiliary layer in the light-emitting functional layer of a red light-emitting device, R-EML-subject refers to the subject contained in the light-emitting layer in the light-emitting functional layer of a red light-emitting device, and R-EML-object refers to the object contained in the light-emitting layer in the light-emitting functional layer of a red light-emitting device. G-EBL refers to the light-emitting auxiliary layer in the light-emitting functional layer of a green light-emitting device, G-EML-subject refers to the subject contained in the light-emitting layer in the light-emitting functional layer of a green light-emitting device, and G-EML-object refers to the object contained in the light-emitting layer in the light-emitting functional layer of a green light-emitting device.

[0282] In some embodiments, referring to Figures 13 and 14, the light-emitting auxiliary layer (EBL) can be one or more layers, and the multiple light-emitting auxiliary layers can be made of the same material or different materials. By setting multiple light-emitting auxiliary layers and controlling the energy level relationship between different light-emitting auxiliary layers, the electron blocking effect can be improved. At the same time, the carrier mobility between different light-emitting auxiliary layers can be controlled, and the migration of holes from the hole transport layer to the light-emitting layer can be adjusted, thereby effectively improving the light emission effect.

[0283] In some embodiments, for the embodiments shown in Figures 13 and 14, the thickness range of each film layer of the light-emitting functional layer is shown in Tables 4a and 4b below. When the film thickness range shown in Tables 4a and 4b is selected, the number of holes and electrons in the film layer can be effectively balanced, and a strong microcavity can be formed to improve the light emission effect.

[0284] Table 4a

[0285] Table 4b

[0286] In some embodiments, referring to FIG14, a first distance D1 is provided between the first light-emitting layer EML-1 and the first electrode 310, and a second distance D2 is provided between the second light-emitting layer EML-2 and the second electrode 330. The sum of the first distance D1 and the second distance D2 is less than 0.5 times the emitted light wavelength λ of the light-emitting device 300, i.e., D1 + D2 < 0.5λ. By adjusting the relationship between the first distance D1 and the second distance D2 and the emitted light wavelength λ of the light-emitting device 300, the movement distance and speed of holes and electrons in the light-emitting device can be effectively controlled, and the position of the light-emitting layer can be set at a suitable position in the microcavity, further improving the light extraction efficiency.

[0287] In some embodiments, continuing to refer to FIG14, there is a third distance D3 between the upper surface of the first charge generation layer CGL-1 and the upper surface of the first electrode 310, and a fourth distance D4 between the lower surface of the second charge generation layer CGL-2 and the upper surface of the electron transport layer ETL-2, wherein the third distance D3 is smaller than the fourth distance D4. By adjusting the relationship between the third distance D3 and the fourth distance D4, the movement distance and speed of holes and electrons in the light-emitting device can be effectively controlled, and the position of the light-emitting layer can be set at a suitable location in the microcavity, thereby improving the external quantum efficiency.

[0288] In some embodiments, continuing to refer to Figures 13 and 14, in the light-emitting device 300, the thickness d of each film layer in the light-emitting functional layer 320 is... x With refractive index n x The sum of the products is less than or equal to the emitted light wavelength λ of the light-emitting device 300, that is... Where x is a positive integer from 1 to a, and a is the number of film layers contained in the light-emitting functional layer. By setting the film thickness and refractive index as described above, the external quantum efficiency of the device can be effectively improved, thereby increasing the light extraction efficiency of the light-emitting device.

[0289] In some embodiments, referring to FIG14, the second electrode 330 includes a first conductive layer 330-1, the first conductive layer 330-1 being made of a magnesium-silver alloy, wherein the mass ratio of magnesium to magnesium-silver alloy is 5%-25%. Since the resistivity of silver is much lower than that of magnesium, increasing the silver content of the second electrode can effectively reduce the voltage drop and further reduce the power consumption of the product. Furthermore, the second electrode 330 also includes a second conductive layer 330-2 located on the side of the first conductive layer 330-1 away from the substrate, the second conductive layer 330-2 being made of ytterbium. The presence of a ytterbium layer on the second electrode can increase the injection of electrons into the light-emitting device, which is beneficial for reducing the operating voltage of the light-emitting device.

[0290] In some embodiments, the side of the second electrode 330 away from the substrate 10 includes a light extraction layer. The light extraction layer material is selected from high refractive index materials to improve the light extraction effect of the light-emitting device. The thickness of the light extraction layer is 40-100 nm to enhance the light extraction effect. The molecular weight range of the light extraction layer material is selected from 600-1100. When the molecular weight is less than 600, the glass transition temperature of the material is low, resulting in poor film formation during evaporation. When the molecular weight is greater than 1100, excessively high temperatures are required during evaporation, which may lead to material degradation.

[0291] In some embodiments, the display panel may include multiple light-emitting devices arranged in an array, such as red, green, and blue light-emitting devices. The area where the pixel opening overlaps with the first electrode of the light-emitting device is called the opening area. Within the area formed by the opening area, the area where the pixel opening, the first electrode, the light-emitting functional layer, and the second electrode all overlap is the light-emitting area of ​​the light-emitting device. The ratio of the light-emitting area of ​​the red light-emitting device to that of the green light-emitting device is 0.8-2, and the ratio of the light-emitting area of ​​the red light-emitting device to that of the blue light-emitting device is 1.5-3. By adjusting the opening areas of different color pixels, it is ensured that the brightness attenuation of each color pixel is consistent during the operation of the display panel, which helps to improve color shift and enhance the display effect.

[0292] In some embodiments, in the first direction X, first and second light-emitting devices of different colors are alternately arranged to form a first type of arrangement, and a third light-emitting device is arranged in the first direction X to form a second type of arrangement. The first and second types of arrangements alternate in the second direction Y, with the first and second directions perpendicular to each other. For example, the first light-emitting device is a red light-emitting device, the second light-emitting device is a green light-emitting device, and the red and green light-emitting devices are alternately arranged in the column direction to form a first type of arrangement. The third light-emitting device is a blue light-emitting device, and it is arranged in the column direction to form a second type of arrangement. The first and second types of arrangements alternate in the row direction.

[0293] In some embodiments, in the second direction Y, the first light-emitting device and the third light-emitting device are arranged alternately, and the second light-emitting device and the third light-emitting device are arranged alternately. The line connecting the geometric centers of the first light-emitting device and the third light-emitting device forms a "Z" shape, and the line connecting the geometric centers of the second light-emitting device and the third light-emitting device forms a "Z" shape. The included angle formed by the lines connecting the above "Z" shapes is greater than or equal to 90° and less than or equal to 180°.

[0294] For example, referring to FIG15a, the first light-emitting device 301 and the second light-emitting device 302 are arranged alternately along the first direction X to form a first type of arrangement, and the third light-emitting devices 303 and 303' are arranged along the first direction X to form a second type of arrangement. A light-emitting unit 300-a includes one first light-emitting device 301, one light-emitting device 302, and two third light-emitting devices 303 and 303'. Multiple light-emitting units 300-a are arranged in an array, wherein the second electrode 331 of the first light-emitting device 301 and the second electrode 332 of the second light-emitting device 302 in the first type of arrangement are independent of each other, the two third light-emitting devices 303 and 303' in the same light-emitting unit 300-a share a second electrode 333, and the second electrodes 333 of the third light-emitting devices 303 and 303' in different light-emitting units 300-a are independent of each other. In the same light-emitting unit 300-a, the interval between the two third light-emitting devices 303 and 303' is smaller than the interval between the adjacent first light-emitting device 301 and the second light-emitting device 302. In two adjacent light-emitting units 300-a, the interval between the two adjacent third light-emitting devices 303 and 303' is larger than the interval between the two third light-emitting devices 303 and 303' in the same light-emitting unit 300-a. In this way, crosstalk between different light-emitting units can be reduced. In the second direction Y, the first light-emitting device 301 and the third light-emitting device 303 are arranged alternately, and the second light-emitting device 302 and the third light-emitting device 303' are arranged alternately. The line connecting the geometric centers of the first light-emitting device 301 and the third light-emitting device 303 forms a "Z" shape, and the line connecting the geometric centers of the second light-emitting device 302 and the third light-emitting device 303' forms a "Z" shape. The angle between the line connecting the geometric centers of the first light-emitting device 301 and the third light-emitting device 303 and the line connecting the geometric centers of the second light-emitting device 302 and the third light-emitting device 303' is different.

[0295] For example, referring to FIG15b, unlike the embodiment shown in FIG15a, the second electrodes 333 and 333' of the two third light-emitting devices 303 and 303' located in the same light-emitting unit 300-a are independent of each other, and the second electrodes 333h and 333' of the third light-emitting devices 303 located in different light-emitting units 300-a are also independent of each other. In the second direction Y, the first light-emitting device 301 and the third light-emitting device 303 are arranged alternately, and the second light-emitting device 302 and the third light-emitting device 303' are arranged alternately. The angle formed by the line connecting the geometric centers of the first light-emitting device 301 and the third light-emitting device 303 and the line connecting the geometric centers of the second light-emitting device 302 and the third light-emitting device 303' is different. The line connecting the geometric center of the third light-emitting device 303 and the geometric centers of the two adjacent first light-emitting devices 301 is axially symmetrical, while the line connecting the geometric center of the first light-emitting device 301 and the geometric centers of the two adjacent third light-emitting devices 303 is asymmetrical. The line connecting the geometric center of the third light-emitting device 303' and the geometric centers of the two adjacent second light-emitting devices 301 is axially symmetric, while the line connecting the geometric center of the second light-emitting device 301 and the geometric centers of the two adjacent third light-emitting devices 303' is asymmetrical.

[0296] For example, referring to FIG15c, unlike the embodiment shown in FIG15a, a light-emitting unit 300-a includes a first light-emitting device 301, a light-emitting device 302, and a third light-emitting device 303. The first light-emitting device 301 and the second light-emitting device 302 are arranged alternately along a first direction X, forming a first type of arrangement, and the third light-emitting device 303 is arranged along the first direction X, forming a second type of arrangement. The second electrodes 333 of the third light-emitting devices 303 located in different light-emitting units 300-a are independent of each other. In the second direction Y, the first light-emitting device 301 and the third light-emitting device 303 are arranged alternately, and the second light-emitting device 302 and the third light-emitting device 303 are arranged alternately. The line connecting the geometric centers of the first light-emitting device 301 and the third light-emitting device 303 forms a "Z" shape, and the line connecting the geometric centers of the second light-emitting device 302 and the third light-emitting device 303 also forms a "Z" shape.

[0297] In some embodiments, the display panel 100 includes a transistor T between a first electrode 310 and a substrate 10. The transistor T is electrically connected to the first electrode 310 or the second electrode 330 of a light-emitting device to provide voltage to the light-emitting device 300, causing the light-emitting device 300 to emit light. Referring to FIG16, the driving circuit layer 110 is located between the substrate 10 and the planarization layer PLN, and includes a semiconductor layer SE, a first insulating layer GI1, a first gate layer GATE1, a second insulating layer GI2, a second gate layer GATE2, a dielectric layer ILD, a first metal layer SD1, and a third insulating layer GI3, which are sequentially disposed along a direction away from the substrate 10. The transistor T includes an active layer 203, a gate 204 disposed on the first insulating layer GI1, and a first source / drain electrode 201 and a second source / drain electrode 202 disposed on the second insulating layer GI2 and the dielectric layer ILD. The second insulating layer GI2 and the dielectric layer ILD can electrically insulate the gate 204, the first source / drain electrode 201, and the second source / drain electrode 202. For example, the first source-drain electrode 201 is the drain of transistor T, the second source-drain electrode 202 is the source of transistor T, and the second source-drain electrode 202 can be electrically connected to a data line (not shown).

[0298] In some embodiments, referring to FIG16, the first electrode 310 is electrically connected to the first source / drain electrode 201 of the transistor T through a via disposed in the planarization layer PLN and the third insulating layer GI3, thereby enabling the transistor T to drive the light-emitting device 300 to light up the light-emitting device 300.

[0299] In some embodiments, referring to FIG17, the driving circuit layer 110 further includes a second metal layer SD2 located between the third insulating layer GI3 and the planarization layer PLN, for connecting the first source / drain electrode 201 and the light-emitting device 300, facilitating layout and reducing the impact of via depth on the reliability of metal overlap.

[0300] In some embodiments, the display panel 100 includes a plurality of transition electrodes located between the pixel defining layer PDL and the substrate 10.

[0301] In some embodiments, referring to FIG17, the display panel 100 includes two planarization layers PLN-1 and PLN-2 located between the third insulating layer GI3 and the pixel defining layer PDL, and a third metal layer SD3 located between the two planarization layers PLN-1 and PLN-2. The first partition portion 401 includes a third sub-layer 431, a second sub-layer 421 and a first sub-layer 411 sequentially disposed along the direction away from the substrate 10. The third sub-layer 431 includes a first conductive portion 4311 that penetrates the pixel defining layer PDL and the planarization layer PLN-2, and overlaps with the transfer electrode 205 located in the third metal layer SD3, so that the second electrode 330 is connected to the transfer electrode 205 through the first partition portion 401.

[0302] In some embodiments, referring to FIG18, the isolation structure 400 is connected to the transfer electrode 205 through the first conductive part 4311, and the multiple transfer electrodes 205 are interconnected to form a mesh structure, which improves the uniformity of the signal of the second electrode 330. On the other hand, it reduces the resistance of the second electrode 330, reduces the heat generation of the display panel, and improves the lifespan of the display panel.

[0303] In some embodiments, multiple transition electrodes 205 of the same color light-emitting device can be interconnected, while multiple transition electrodes 205 of different color light-emitting devices are independent of each other, so as to provide the same cathode signal to the same color light-emitting device, and differentiate the cathode signals of different color light-emitting devices to further reduce power consumption and balance the lifespan of different color light-emitting materials.

[0304] In some embodiments, the transition electrodes 205 located in different areas of the panel are disconnected from each other, while the transition electrodes 205 in the same area are connected to each other. By providing different voltage signals to the cathodes of different areas, the impact of the voltage drop in the direction away from the IC on the light emission effect of the display panel is reduced, thereby improving the display effect.

[0305] In some embodiments, referring to Figures 19a, 19b, and 19c, the first electrode 310 is not connected to the transistor T, the isolation structure 400 is connected to the transition electrode 205, and the transition electrode 205 is connected to the transistor T, thereby realizing the electrical connection between the second electrode 330 and the transistor T, and thus realizing the input of a driving signal from the second electrode 330. In this way, when the light-emitting device deteriorates due to use, the source voltage of the transistor will not shift, the light-emitting device will not be affected by afterimages or its brightness will decrease rapidly, thereby reducing the risk of display quality degradation.

[0306] For example, referring to FIG19a, the display panel 100 includes two planarization layers PLN-1 and PLN-2 located between the third insulating layer GI3 and the pixel defining layer PDL, and a third metal layer SD3 located between the two planarization layers PLN-1 and PLN-2. The second sub-layer 421 in the first partition 401 includes a second conductive portion 4211 penetrating the pixel defining layer PDL and the planarization layer PLN-2, and overlaps with the transfer electrode 205 located in the third metal layer SD3, so that the second electrode 330 is connected to the transfer electrode 205 through the first partition 401. The transfer electrode 205 is connected to the first source / drain electrode 201 through a via penetrating the planarization layer PLN-1 and the third insulating layer GI3, so that the transfer electrode 205 is connected to the transistor T.

[0307] Referring, as exemplarily to FIG19b, unlike the embodiment shown in FIG19a, the display panel 100 includes a planarization layer PLN located between the third insulating layer GI3 and the pixel defining layer PDL. The transition electrode 205 is disposed in the same layer as the first electrode 310. The second sub-layer 421 in the first partition portion 401 includes a second conductive portion 4211 penetrating the pixel defining layer PDL and overlapping with the transition electrode 205. The transition electrode 205 is connected to the first source / drain electrode 201 through a via penetrating the planarization layer PLN and the third insulating layer GI3, thus connecting the transition electrode 205 to the transistor T. In this case, the first electrode 310 and the second conductive portion 4211 are disposed in the same layer, and can be etched and formed simultaneously with the first electrode 310 during fabrication, simplifying the process flow.

[0308] Referring, as exemplarily to FIG19c, unlike the embodiment shown in FIG19a, the first partition portion 401 includes a slot-shaped separator, which is an asymmetrical structure. Specifically, on the side closer to the light-emitting device 300, the first partition portion 401 does not have a second sub-layer; on the side farther from the light-emitting device 300, the first partition portion 401 has a second sub-layer 421, which isolates the second electrode 330. The transition electrode 205 is located between the third insulating layer GI3 and the planarization layer PLN-2, and is connected to the first source / drain electrode 201 through a via penetrating GI3. The slot-shaped separator exposes at least a portion of the upper surface of the transition electrode 205, and the second electrode 330 overlaps with the upper surface of the transition electrode 205 through the slot-shaped separator. In this case, the slot-shaped separator increases the overlap area between the transition electrode 205 and the second electrode 330, improving overlap reliability and thus improving the yield of the display panel.

[0309] When the second electrode (cathode) is used as the input electrode of the driving signal, the first electrode (anode) can be used as the output signal terminal of the light-emitting device. Multiple first electrodes may include multiple first connecting electrodes, which are electrically connected to the multiple first electrodes, so that the first electrodes are at least partially connected to each other, forming a grid structure to provide the same voltage signal to the multiple first electrodes.

[0310] In some embodiments, referring to Figures 20 to 22, the plurality of first electrodes 310 are interconnected through first connecting electrodes 3101, so that the first electrodes 310 of the display panel 100 are connected as a whole. In this case, the display panel light-emitting device can emit light by applying the same output signal to the first electrodes, which is convenient for fabrication.

[0311] In some embodiments, the first connecting electrode is disposed between the first electrodes of light-emitting devices of the same color, so that the first electrodes of the same color are connected to form a whole, so as to provide the same electrical signal to the light-emitting devices of the same color. The cathode signals of light-emitting devices of different colors are differentiated, further reducing power consumption and balancing the lifespan of light-emitting materials of different colors.

[0312] In some embodiments, since the first electrodes are interconnected, and due to the presence of resistance, the voltage drop of the first electrodes at different distances from the IC terminal in the display panel is different. Therefore, the first electrodes in areas with different distances from the IC can be disconnected, and the first electrodes in the same area are interconnected through a first connecting electrode. By providing different voltage signals to the first electrodes in different areas, the impact of the voltage drop in the direction away from the IC on the light emission effect of the display panel is reduced, thereby improving the display effect.

[0313] In some embodiments, the first connecting electrode may include multiple sub-connecting electrodes. For example, continuing to refer to Figures 20 to 22, the first electrodes 310 of different light-emitting devices are connected through a first connecting electrode 3101. The first connecting electrode 3101 includes multiple sub-connecting electrodes, including a first sub-connecting electrode 3101-1 and a second sub-connecting electrode 3101-2. By setting the first connecting electrode to include multiple spaced sub-connecting electrodes, the position of the conductive part of the partition structure or the overlapping hole of the second electrode and the transition electrode can be more reasonably set, which facilitates the layout and optimizes the process. In addition, the resistance of the first electrode can be reduced by increasing the width of the first connecting electrode or the sub-connecting electrode, making the anode voltage of the display panel more uniform and improving the display effect. For example, blue light-emitting devices have a larger light-emitting area than the other two colors of light-emitting devices, and they have a longer pixel aperture width in the first direction X. The first electrode 310 is more prone to voltage unevenness. Therefore, by setting a wider width for the first connecting electrode 3101 between adjacent blue light-emitting device first electrodes 310, the voltage unevenness caused by the excessive aperture width can be reduced.

[0314] In some embodiments, referring to FIG24a, a plurality of first connecting electrodes 3101 and a plurality of first electrodes 310 can be disposed in the same layer. In this way, the first electrodes and the first connecting electrodes can be simultaneously etched in the process, which simplifies the fabrication process.

[0315] In other embodiments, referring to FIG24b, the plurality of first connecting electrodes 3101 are on different layers from the plurality of first electrodes 310. The plurality of first connecting electrodes 3101 are located on the side of the plurality of first electrodes 310 closer to the substrate. In this way, the first connecting electrodes 3101 can be provided with a larger area, further reducing resistance, improving the uniformity of the first electrode signal, improving the display effect, and reducing heat generation. In this case, the first connecting electrodes can be overlapped with the first electrodes, making the first electrodes flatter and reducing color shift. In addition, the first connecting electrodes can also be used to shield the traces of the driving circuit layer, reducing the reflection of light by the traces of the driving circuit layer and improving the display effect.

[0316] In some embodiments, the display panel includes a plurality of transition electrodes, each transition electrode including at least one first transition end and a second transition end. The at least one first transition end overlaps with a partition structure, and the second transition end overlaps with a plurality of transistors. The display panel also includes a virtual partition region surrounding a pixel opening. In a top view, a virtual partition region corresponding to a pixel opening includes an outer ring on the side away from the pixel opening and an inner ring on the side closer to the pixel opening. The partition structure corresponding to a pixel opening is located within the virtual partition region, and the side of the partition structure away from the pixel opening coincides with the outer ring of the virtual partition region, while the side of the partition structure closer to the pixel opening coincides with the inner ring of the virtual partition region. The virtual partition region includes a plurality of partition areas and a plurality of interval areas. The partition areas are the overlapping portions of the virtual partition areas and the partition structures, and the interval areas are the non-overlapping portions of the virtual partition areas and the partition structures. The partition areas and interval areas corresponding to adjacent pixel openings do not face each other, and the partition structure within at least one partition area overlaps with at least one first transition end.

[0317] For example, as shown in FIG20, for pixel opening 3011, a virtual partition region 51 is disposed around pixel opening 3011, and a partition structure 400 is located within the virtual partition region 51. The virtual partition region 51 includes a partition region 512 and a spacing region 511. The partition region 512 includes a first partition region 512-1 and a second partition region 512-2, and the spacing region 511 includes a first spacing region 511-1 and a second spacing region 511-2. The first spacing region 511-1 and the second spacing region 511-2 are located at different points in pixel opening 3011. On the side, the partition structure 400 located within the first partition area 512-1 overlaps with the first adapter end 2051; for the pixel opening 3021, a virtual partition area 52 is set around the pixel opening 3021, and the partition structure 400 is located within the virtual partition area 52. The virtual partition area 52 includes a partition area 522 and a spacing area 521. The partition area 522 includes a first partition area 522-1 and a second partition area 522-2, and the spacing area 521 includes a first spacing area 521-1 and a second spacing area 521-2. The first spacing area 521-1... The second and second interval regions 521-2 are located on different sides of the pixel opening 3021. The partition structure 400 located within the first partition region 522-1 overlaps with the first adapter end 2052. For the pixel opening 3031, a virtual partition region 53 is set around the pixel opening 3031. The partition structure 400 is located within the virtual partition region 53. The virtual partition region 53 includes a partition region 532 and an interval region 531. The partition region 532 includes a first partition region 532-1 and a second partition region 532-2. The interval region 531 includes a first interval region 531-2. 1. The first interval region 531-1 and the second interval region 531-2 are located on different sides of the third pixel opening 3031. The partition structure 400 located in the first partition region 532-1 overlaps with the first adapter end 2053. The first interval region 521-1 corresponding to the pixel opening 3021 is set facing the second partition region 532-2 corresponding to the pixel opening 3031. The first interval region 531-1 corresponding to the pixel opening 3031 is set facing the first partition region 522-2 corresponding to the pixel opening 3021.

[0318] In some implementations, multiple first transition ends on the interval rows are arranged in the same way in the first direction X. For example, multiple first transition ends in the i-th row and the (i+2)-th row are arranged in the same way in the first direction X (i is a natural number), and multiple first transition ends in the j-th column and the (j+4)-th row are arranged in the same way in the second direction Y (j is a natural number), which facilitates layout and pixel opening arrangement.

[0319] In some embodiments, referring to FIG25a, in a unit composed of pixel openings 3011, 3021, and 3031, the number of pixel openings 3031 is two (including pixel opening 3031-1 and pixel opening 3031-2) and the emitted light is of the same color. The emitted light colors of pixel openings 3011, 3021, and 3031 are different. The geometric centers of the second electrodes 331, 332, and 333 are offset in the second direction Y relative to the geometric centers of pixel openings 3011, 3021, and 3031. The first adapters 2051, 2052, and 2053 are respectively located at the image... On the same side of pixel openings 3011, 3021, and 3031, and in the direction of offset of the second electrode relative to the geometric center of the pixel opening, second transition ends 2054, 2055, and 2056 are arranged sequentially in the second direction Y. Second transition ends 2054 and 2055 are located between pixel openings 3011 and 3021, and second transition end 2056 is located within the closed pattern enclosed by the geometric centers of pixel openings 3011, 3021, and 3031. Second transition end 2056 and two first transition ends 2053 are located on the same transition electrode, and there is no overlap between each pixel opening and each transition electrode.

[0320] In some embodiments, referring to FIG25b, unlike the embodiment shown in FIG25a, the second adapters 2054, 2056, and 2055 are arranged sequentially in the first direction X, with second adapter 2054 located between pixel openings 3011 and 3031, second adapter 2056 located between pixel openings 3011, 3021, and 3031, and second adapter 2055 located between pixel openings 3021 and 3031. Pixel openings 3011 and 3021 are overlapped with the adapter electrodes. Regularly arranging the second adapters in the same direction facilitates layout and pixel opening arrangement.

[0321] In some embodiments, referring to FIG25c, unlike the embodiment shown in FIG25a, the number of pixel openings 3031 is one, and in a plane perpendicular to the substrate and parallel to the first direction X, the orthographic projection of pixel opening 3011 falls within the orthographic projection of pixel opening 3031, and the orthographic projection of pixel opening 3021 partially overlaps with the orthographic projection of pixel opening 3031. The geometric centers of the second electrodes 331, 332, and 333 are offset relative to the geometric centers of pixel openings 3011, 3021, and 3031 in both the first direction X and the second direction Y. The first adapter end 2051 is located on the side of pixel opening 3011 offset in the first direction X, the first adapter end 2053 is located on the side of pixel opening 3031 offset in the second direction Y, and the first adapter end 2052 is located on a corner of pixel opening 3021 offset in the second direction Y and close to pixel opening 3011. The second adapter terminals 2054, 2055, and 2056 are arranged sequentially in the second direction Y. Second adapter terminal 2054 is located between pixel openings 3011 and 3021, second adapter terminal 2055 is located within the triangle formed by the geometric centers of pixel openings 3011, 3021, and 3031, and second adapter terminal 2056 is located on the side of pixel opening 3031 away from pixel openings 3011 and 3021, and at least partially overlaps with the second electrode 333. In this way, by rationally arranging the positions of the first and second adapter terminals, the adapter electrodes are made as short as possible, thereby reducing the resistance of the adapter electrodes and improving the reliability of the display panel.

[0322] In some embodiments, the partition structures located within multiple partition zones can have different shapes. For example, referring to FIG26, which is a cross-sectional view along 2-2' in FIG20, the partition structure includes a cylindrical partition 400-1 located in the first partition zone 532-1 and a slotted partition 400-2 located in the second partition zone 532-2. The specific shapes of the cylindrical partition 400-1 and the slotted partition 400-2 can be referred to the relevant embodiments of the partition shapes described above, and will not be repeated here. The second electrode 330 is connected to the first adapter end 2053 of the adapter electrode through the slotted partition 400-2 located in the second partition zone 532-2, and the second electrode 330 is disconnected from the cylindrical partition 400-1 located in the first partition zone 532-1 on the one hand, and from the second sub-partition 420 of the slotted partition 400-2 located in the second partition zone 532-2 on the other hand.

[0323] In some embodiments, referring to Figures 27a and 27b, the display panel includes at least one light-emitting device 300. In a cross-section perpendicular to the substrate 10 and tangent to the light-emitting device 300, a partition structure is located on at least two different sides of the light-emitting device 300. This includes a cylindrical partition 400-1 located in the first partition region 532-1 and a slotted partition 400-2 located in the second partition region 532-2. The specific shapes of the cylindrical partition 400-1 and the slotted partition 400-2 can be referred to the description of the relevant embodiments regarding the partition shapes above, and will not be repeated here. The second electrode 330 is connected to the first junction end 205-1 of the transfer electrode via the cylindrical partition 400-1 located in the first partition region 532-1. The second junction end 205-2 of the transfer electrode is connected to the transistor T, thereby connecting the light-emitting device 300 to the transistor T in the driving circuit. For example, in Figure 27a, the second electrode 330 overlaps with the first sub-separator 410 of the cylindrical separator 400-1. The first sub-separator 410 includes a first conductive portion 4101 penetrating the pixel definition layer, connecting the second electrode 330 to the first adapter end 205-1 of the adapter electrode. In Figure 27b, the second electrode 330 overlaps with the second sub-separator 420 of the cylindrical separator 400-1. The second sub-separator 420 includes a second conductive portion 4201 penetrating the pixel definition layer, connecting the second electrode 330 to the first adapter end 205-1 of the adapter electrode. Furthermore, in Figures 27a and 27b, the second electrode 330 is disconnected by the second sub-separator 420 of the slotted separator 400-2 located in the second partition region 532-2.

[0324] Understandably, partition structures can take other shapes and forms under different technological conditions, as long as the same technical concept is applied.

[0325] In some embodiments, the display panel includes a substrate and a plurality of pixel openings located on the substrate. The plurality of pixel openings include a first pixel opening and a second pixel opening. The display panel also includes a partition structure located between the first pixel opening and the second pixel opening. The partition structure includes a first sidewall near the first pixel opening and a second sidewall near the second pixel opening. The display panel also includes a plurality of second electrodes located on the side of the plurality of pixel openings away from the substrate and corresponding to the first pixel opening and the second pixel opening. Among the plurality of second electrodes, one includes a fifth end that contacts the first sidewall, and the other includes a sixth end that is closer to the second sidewall than the center of its corresponding pixel opening. The distance between the fifth end and the substrate is not equal to the distance between the sixth end and the substrate.

[0326] Referring to Figure 29, the display panel 100 includes a substrate 10 and a plurality of pixel openings 3000 located on the substrate. The plurality of pixel openings 3000 include a first pixel opening 3011 and a second pixel opening 3021. The display panel 100 also includes a cylindrical separator 400-1 located between the first pixel opening 3011 and the second pixel opening 3021. The cylindrical separator 400-1 includes a first sidewall 420-a near the first pixel opening 3011 and a second sidewall 420-b near the second pixel opening 3021. The 00 also includes a plurality of second electrodes 330 located on the side of the plurality of pixel openings 3000 away from the substrate 10 and corresponding to the first pixel opening 3011 and the second pixel opening 3021. One of the plurality of second electrodes 330 includes a fifth end 3305 that contacts the first sidewall 420-a, and the other includes a sixth end 3306 that is closer to the second sidewall 420-b than the center of its corresponding pixel opening. The distance L5 between the fifth end 3305 and the substrate 10 is not equal to the distance L6 between the sixth end 3306 and the substrate 10.

[0327] In some embodiments, the display panel includes a substrate and a first electrode located on the substrate. The first electrode includes at least a first sub-electrode and a second sub-electrode, and the first sub-electrode is electrically connected to the second sub-electrode via a first connecting electrode. The display panel also includes a light-emitting functional layer located on the side of the first electrode away from the substrate and a second electrode located on the side of the light-emitting functional layer away from the substrate. The second electrode includes at least a third sub-electrode corresponding to the first sub-electrode and a fourth sub-electrode corresponding to the second sub-electrode, and the third sub-electrode and the fourth sub-electrode are not connected. The display panel also includes a transistor located between the first electrode and the substrate. The transistor includes at least a first sub-transistor electrically connected to the third sub-electrode and a second sub-transistor electrically connected to the fourth sub-electrode.

[0328] Figures 29 and 30 are schematic diagrams showing different planes perpendicular to the substrate that are tangent to pixel openings 3011 and 3012. The display panel 100 includes a substrate 10 and a first electrode 310 located on the substrate. The first electrode 310 includes at least a first sub-electrode 314 and a second sub-electrode 315. The first sub-electrode 314 is electrically connected to the second sub-electrode 315 through a first connecting electrode 3101. The display panel 100 also includes a light-emitting functional layer 320 located on the side of the first sub-electrode 314 away from the substrate 10, and a second electrode 330 located on the side of the light-emitting functional layer 320 away from the substrate. The second electrode 330 includes at least a third sub-electrode 334 corresponding to the first sub-electrode 314 and a fourth sub-electrode 335 corresponding to the second sub-electrode 315. The third sub-electrode 334 and the fourth sub-electrode 335 are not connected. The display panel 100 also includes a transistor T located between the first electrode 310 and the substrate 10. The transistor T includes at least a first sub-transistor T-1 electrically connected to the third sub-electrode 334 and a second sub-transistor T-2 electrically connected to the fourth sub-electrode 335.

[0329] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel, comprising: Substrate; The pixel opening is located on the substrate. The first electrode is at least partially exposed by the pixel opening; The partition structure includes a first partition portion and a second partition portion, wherein the first partition portion and the second partition portion are located on different sides of the pixel opening; The second electrode is located on the side of the first electrode away from the substrate. The second electrode includes a first end located on the side of the first partition portion, the first end being in contact with the sidewall of the first partition portion, and a second end located on the side of the second partition portion. The distance between the first end and the substrate is not equal to the distance between the second end and the substrate.

2. The display panel according to claim 1, wherein, The geometric center of the second electrode projected orthogonally in the direction of the substrate does not coincide with the geometric center of the pixel opening projected orthogonally in the direction of the substrate.

3. The display panel according to claim 1 or 2, wherein, The second end is spaced apart from the second partition.

4. The display panel according to claim 1 or 2, wherein, The second end contacts the second partition portion.

5. The display panel according to claim 4 further includes a second electrode sacrificial portion, the second electrode sacrificial portion being located on the side of the partition structure parallel to the substrate and away from the first electrode; the orthographic projection of the second electrode sacrificial portion in the direction of the substrate and the orthographic projection of the second electrode in the direction of the substrate have a projection overlap portion.

6. The display panel according to claim 5, wherein, In the overlapping portion, the width of the first projected overlapping sub-part located on one side of the first partition portion is not equal to the width of the second projected overlapping sub-part located on one side of the second partition portion.

7. The display panel according to any one of claims 1 to 6, wherein, The first end and the second end are located on opposite sides of the pixel opening.

8. The display panel according to any one of claims 1 to 7, further comprising: A driving circuit layer is located between the substrate and the pixel opening. The driving circuit layer includes multiple signal lines. The orthographic projection of the line connecting the first end and the second end of the second electrode in the direction of the substrate is parallel to the extension direction of at least one of the multiple signal lines.

9. The display panel according to any one of claims 1 to 8, wherein, The geometric center of the pixel opening lies in a plane perpendicular to the substrate, where the line connecting the first end and the second end is located.

10. The display panel according to claim 5, wherein, The partition structure further includes a third partition and a fourth partition, which are located on opposite sides of the pixel opening, and the first partition, the second partition, the third partition, and the fourth partition are located on different sides of the pixel opening.

11. The display panel according to claim 10, wherein, The second electrode includes a third end located on one side of the third partition and a fourth end located on one side of the fourth partition. The projection overlap portion includes a third projection overlap sub-portion located on one side of the third partition and a fourth projection overlap sub-portion located on one side of the fourth partition.

12. The display panel according to any one of claims 1 to 11, further comprising a light-emitting functional layer, the light-emitting functional layer being located between the first electrode and the second electrode, the light-emitting functional layer comprising a common layer; the partition structure comprising a covering portion, the covering portion at least partitioning the common layer.

13. The display panel according to claim 12, wherein, The partition structure includes a cylindrical partition member, wherein the orthographic projection of the surface of the cylindrical partition member away from the substrate is not equal in width to the orthographic projection of the surface of the cylindrical partition member closer to the substrate in the direction of the substrate.

14. The display panel according to claim 13, wherein, The cylindrical separator includes a first sub-separator and a second sub-separator. The first sub-separator is located on the side of the second sub-separator away from the substrate. In a direction parallel to the substrate, the distance between the side of the first sub-separator near the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator near the pixel opening and the geometric center of the pixel opening.

15. The display panel according to claim 13 or 14, wherein, The cylindrical separator does not contact the first electrode, and the ratio of the thickness of the light-emitting functional layer to the thickness of the cylindrical separator is greater than or equal to 0.17 and less than or equal to 0.

4.

16. The display panel according to claim 14, wherein, The cylindrical separator further includes a third sub-separator located between the second sub-separator and the substrate. In a direction parallel to the substrate, the distance between the side of the third sub-separator near the pixel opening and the geometric center of the pixel opening is less than the distance between the side of the second sub-separator near the pixel opening and the geometric center of the pixel opening.

17. The display panel according to claim 16, wherein, The cylindrical separator overlaps with the first electrode portion, and the ratio of the thickness of the light-emitting functional layer to the thickness of the cylindrical separator is greater than or equal to 1 and less than or equal to 3.

5.

18. The display panel according to claim 12 or 13, wherein, The partition structure includes a groove-shaped separator, wherein the opening width of the groove-shaped separator on the side away from the substrate is not equal to the opening width on the side closer to the substrate in the direction of the substrate.

19. The display panel according to claim 18, wherein, An insulating layer is included between the plane parallel to the substrate where the first electrode is located and the substrate. The insulating layer is broken at the groove-shaped separator and forms the cover portion. The groove-shaped separator includes a third sub-separator located on the side of the cover layer closer to the substrate. The ratio of the thickness of the light-emitting functional layer to the sum of the thicknesses of the third sub-separator and the cover portion is greater than or equal to 0.1 and less than or equal to 1.

5.

20. The display panel according to claim 19, wherein, The orthographic projection of the insulating layer in the direction of the substrate does not overlap with the orthographic projection of the first electrode in the direction of the substrate.

21. The display panel according to claims 12 to 20, wherein, The light-emitting functional layer further includes at least one light-emitting layer, which includes a subject and an object.

22. The display panel according to claim 21, wherein, The main body includes a first main body and a second main body, which together constitute a radical complex, an isomer, or a homologue.

23. The display panel according to claim 22, wherein, The difference between the molecular weight of the first subject and the molecular weight of the second subject is less than 300.

24. The display panel according to any one of claims 21 to 23, wherein, The light-emitting functional layer further includes a light-emitting auxiliary layer, which is located on the side of the light-emitting layer close to the substrate, and the light-emitting auxiliary layer includes one or more layers.

25. The display panel according to any one of claims 21 to 24, wherein, The light-emitting functional layer includes multiple light-emitting layers, including a first light-emitting layer and a second light-emitting layer. The first light-emitting layer has a first distance from the first electrode, and the second light-emitting layer has a second distance from the second electrode. The sum of the first distance and the second distance is less than 0.5 times the wavelength of the light emitted by the light-emitting layer.

26. The display panel according to any one of claims 12 to 25, wherein, The light-emitting functional layer further includes a first charge generation layer, a second charge generation layer, and an electron transport layer. The second charge generation layer is located on the side of the first charge generation layer away from the substrate. The electron transport layer is located between the second charge generation layer and the second electrode. There is a third distance between the upper surface of the first charge generation layer and the upper surface of the first electrode. There is a fourth distance between the lower surface of the second charge generation layer and the upper surface of the electron transport layer. The third distance is smaller than the fourth distance.

27. The display panel according to any one of claims 12 to 26, wherein, The sum of the products of the thickness and refractive index of each layer of the light-emitting functional layer is less than or equal to the wavelength of the light emitted by the light-emitting functional layer.

28. The display panel according to any one of claims 1 to 27, wherein, The second electrode includes a central portion with uniform thickness and an edge portion with varying thickness, wherein the thickness of the edge portion gradually decreases in a direction parallel to the substrate and away from the geometric center of the pixel opening.

29. The display panel according to claim 28, wherein, The second electrode edge portion includes a first edge portion parallel to the substrate and a second edge portion in contact with the partition structure. In their respective extending directions, within the same extending length, the thickness change rate of the first edge portion is less than that of the second edge portion.

30. The display panel according to any one of claims 1 to 29, wherein, The second electrode includes a first conductive layer, which is made of a magnesium-silver alloy, wherein the mass ratio of magnesium to magnesium-silver alloy in the magnesium-silver alloy is 5%-25%.

31. The display panel according to claim 30, wherein, The second electrode further includes a second conductive layer, which is located on the side of the first conductive layer away from the substrate, and the material used for the second conductive layer is ytterbium.

32. The display panel according to any one of claims 1 to 31, wherein, The first electrode, the light-emitting functional layer, and the second electrode located within a pixel opening constitute a light-emitting device, and multiple light-emitting devices are arranged in an array.

33. The display panel according to claim 32, wherein, The plurality of light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device, wherein the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the green light-emitting device is 0.8 to 2, and the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the blue light-emitting device is 1.5 to 3.

34. The display panel according to claim 33, comprising a first type of arrangement and a second type of arrangement extending along a first direction, the first type of arrangement and the second type of arrangement being alternately arranged along a second direction, the first direction and the second direction being perpendicular to each other, the first type of arrangement comprising at least two types of light-emitting devices, and the second type of arrangement comprising at least one type of light-emitting device.

35. The display panel according to claim 34, wherein, Multiple red light-emitting devices and multiple green light-emitting devices are arranged alternately along the first direction to form the first type of arrangement, and multiple blue light-emitting devices are arranged along the second direction to form the second type of arrangement.

36. The display panel according to claim 35, wherein, The second electrodes of adjacent light-emitting devices in the first type of arrangement are independent of each other.

37. The display panel according to any one of claims 1 to 36, further comprising a pixel defining layer located on the side of the first electrode away from the substrate; The display panel further includes a transition electrode, which is located between the pixel defining layer and the substrate. The display panel also includes a transistor located between the transition electrode and the substrate, and the second electrode is electrically connected to the transistor through the transition electrode.

38. The display panel according to any one of claims 1 to 37, further comprising a plurality of first connecting electrodes located between the plurality of first electrodes, the plurality of first connecting electrodes being electrically connected to the plurality of first electrodes.

39. The display panel according to claim 38, wherein, At least one of the plurality of first connecting electrodes includes a plurality of sub-connecting electrodes, which are electrically connected to the first electrode.

40. The display panel according to claim 38 or 39, wherein, The light-emitting devices corresponding to the first electrode emit the same color.

41. The display panel according to claim 38 or 39, wherein, Multiple light-emitting devices corresponding to the first electrode are located in the same area of ​​the display panel.

42. The display panel according to any one of claims 38 to 41, wherein, Multiple first connecting electrodes are on the same layer as multiple first electrodes.

43. The display panel according to any one of claims 38 to 41, wherein, The plurality of first connecting electrodes are located on different layers from the plurality of first electrodes, and the plurality of first connecting electrodes are located on the side of the plurality of first electrodes closer to the substrate.

44. The display panel according to claim 38, wherein, The plurality of first electrodes and the plurality of first connecting electrodes form a mesh structure.

45. A display panel, comprising: Substrate; Multiple pixel openings are located on the substrate, including a first pixel opening and a second pixel opening; A partition structure is located between the first pixel opening and the second pixel opening, including a first sidewall near the first pixel opening and a second sidewall near the second pixel opening; Multiple second electrodes are located on the side of the multiple pixel openings away from the substrate. Among the two second electrodes corresponding to the first pixel opening and the second pixel opening, one includes a fifth end that contacts the first sidewall, and the other includes a sixth end that is closer to the second sidewall than the center of the pixel opening. The distance between the fifth end and the substrate is not equal to the distance between the sixth end and the substrate.

46. ​​The display panel of claim 45, further comprising a first electrode, wherein the pixel opening exposes at least a portion of the first electrode.

47. The display panel according to claim 46, further comprising a light-emitting functional layer, the light-emitting functional layer being located between the first electrode and the second electrode, the light-emitting functional layer comprising a common layer; the partition structure comprising a covering portion, the covering portion at least separating the common layer.

48. The display panel according to claim 47, wherein, The light-emitting functional layer further includes a first light-emitting layer, which includes a subject and an object.

49. The display panel according to claim 48, wherein, The main body includes a first main body and a second main body, which together constitute a radical complex, an isomer, or a homologue.

50. The display panel according to claims 47 to 49, wherein, The first electrode, the light-emitting functional layer, and the second electrode located within a pixel opening constitute a light-emitting device, and multiple light-emitting devices are arranged in an array.

51. The display panel according to claim 50, wherein, The plurality of light-emitting devices include a red light-emitting device, a green light-emitting device, and a blue light-emitting device, wherein the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the green light-emitting device is 0.8 to 2, and the ratio of the light-emitting area of ​​the red light-emitting device to the light-emitting area of ​​the blue light-emitting device is 1.5 to 3.

52. The display panel according to claim 51, comprising a first type of arrangement and a second type of arrangement extending along a first direction, the first type of arrangement and the second type of arrangement being alternately arranged along a second direction, the first direction and the second direction being perpendicular to each other, the first type of arrangement comprising at least two types of light-emitting devices, and the second type of arrangement comprising at least one type of light-emitting device.

53. The display panel according to claim 52, wherein, Multiple red light-emitting devices and multiple green light-emitting devices are arranged alternately along the first direction to form the first type of arrangement, and multiple blue light-emitting devices are arranged along the second direction to form the second type of arrangement.

54. The display panel according to any one of claims 46 to 53, further comprising a pixel defining layer located on the side of the first electrode away from the substrate, and a driving circuit layer located between the first electrode and the substrate; The display panel further includes a transition electrode, which is located between the pixel defining layer and the driving circuit layer; The driving circuit layer includes a transistor, and the second electrode is electrically connected to the transistor through the adapter electrode.

55. The display panel according to claim 54, wherein, The plurality of first electrodes further includes a plurality of first connecting electrodes, which are electrically connected to the plurality of first electrodes.

56. The display panel according to claim 55, wherein, The plurality of first electrodes and the plurality of first connecting electrodes form a mesh structure.

57. A display panel, comprising: Substrate; The first electrode is located on one side of the substrate and includes at least a first sub-electrode and a second sub-electrode. A first connecting electrode, wherein the first sub-electrode is electrically connected to the second sub-electrode via the first connecting electrode; A light-emitting functional layer is located on the side of the first electrode away from the substrate. The second electrode is located on the side of the light-emitting functional layer away from the substrate, and includes at least a third sub-electrode corresponding to the first sub-electrode and a fourth sub-electrode corresponding to the second sub-electrode, wherein the third sub-electrode and the fourth sub-electrode are not connected. A transistor, located between the first electrode and the substrate, includes at least a first sub-transistor electrically connected to the third sub-electrode and a second sub-transistor electrically connected to the fourth sub-electrode.

58. A display panel, comprising: Substrate; The pixel opening is located on the substrate. The first electrode is at least partially exposed by the pixel opening; The second electrode is located on the side of the first electrode away from the substrate. A partition structure, at least partially surrounding the pixel opening; In a first cross-section perpendicular to the plane of the substrate, the second electrode includes a first end and a second end, at least one of the first end and the second end is in contact with the sidewall of the partition structure near the pixel opening, and the distance between the first end and the substrate is not equal to the distance between the second end and the substrate.

59. The display panel according to claim 58, wherein, The geometric center of the pixel opening is located within the first cross-section.

60. The display panel according to claim 58, wherein, The first end contacts the side wall of the partition structure near the pixel opening, and the second end is spaced apart from the partition structure.

61. The display panel according to claim 58, wherein, Both the first end and the second end are in contact with the sidewall of the partition structure near the pixel opening; In the first cross-section, the overlap width between the first end and the partition structure in the orthographic projection on the substrate is different from the overlap width between the second end and the partition structure in the orthographic projection on the substrate.

62. The display panel according to claim 58, wherein, The partition structure includes: a first partition, a second partition, a third partition, and a fourth partition. The first partition and the second partition are located on opposite sides of the pixel opening, and the third partition and the fourth partition are located on opposite sides of the pixel opening. The first partition, the second partition, the third partition, and the fourth partition are located on different sides of the pixel opening. The first end is located on one side of the first partition, the second partition, the third partition, or the fourth partition; the second end is located on one side of one of the partitions other than the partition where the first end is located.

63. A display panel, comprising: Substrate; The pixel opening is located on the substrate. The first electrode is at least partially exposed by the pixel opening; The second electrode is located on the side of the first electrode away from the substrate. A partition structure, at least partially surrounding the pixel opening; In a first cross-section perpendicular to the plane of the substrate, the second electrode includes a first end and a second end, at least one of the first end and the second end is in contact with the sidewall of the partition structure near the pixel opening, and the first end and the second end are not symmetrical about the center of the pixel opening in the first cross-section.

64. A display device, comprising: The display panel according to any one of claims 1 to 63; The circuit board is connected to the display panel.

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