Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel at least comprises a substrate; the at least one isolation structure is arranged on one side of the substrate, the at least one isolation structure comprises a first isolation part and a second isolation part, the first isolation part is enclosed to form a first isolation opening, and the second isolation part is enclosed to form a second isolation opening; the plurality of light-emitting devices comprise a first light-emitting device and a second light-emitting device which are different in light emitting color, the first light-emitting device is located in the first isolation opening, and the second light-emitting device is located in the second isolation opening; wherein in a first direction perpendicular to the substrate, the first isolation part has a first thickness, the second isolation part has a second thickness, and the first thickness is different from the second thickness. According to the embodiment of the invention, the defects in the manufacturing process of the display panel are effectively reduced, and the yield of the OLED panel is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream of display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] In view of this, embodiments of the present application provide a display panel and a display device to at least partially solve the above problems.

[0005] According to a first aspect of an embodiment of the present application, a display panel is provided, the display panel at least comprising:

[0006] substrate;

[0007] At least one isolation structure is disposed on one side of the substrate, the at least one isolation structure comprises a first isolation portion and a second isolation portion, the first isolation portion encloses a first isolation opening, and the second isolation portion encloses a second isolation opening;

[0008] A plurality of light emitting devices, the plurality of light emitting devices comprising a first light emitting device and a second light emitting device having different light emitting colors, the first light emitting device being located in the first isolation opening, and the second light emitting device being located in the second isolation opening;

[0009] In a first direction perpendicular to the substrate, the first isolation portion has a first thickness, the second isolation portion has a second thickness, and the first thickness is different from the second thickness.

[0010] In an alternative embodiment,

[0011] The at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, wherein the third isolation portion has a third thickness in the first direction;

[0012] The plurality of light emitting devices further include a third light emitting device, the first light emitting device, the second light emitting device and the third light emitting device emit different colors, and the third light emitting device is located in the third isolation opening;

[0013] wherein at least two of the first thickness, the second thickness and the third thickness are different;

[0014] Preferably, the first thickness, the second thickness and the third thickness are different from each other;

[0015] Preferably, the light-emitting device includes a light-emitting functional layer and a first electrode which are stacked in sequence in a direction away from the substrate, the first electrode of the first light-emitting device overlaps the first isolation portion, and / or the first electrode of the second light-emitting device overlaps the second isolation portion, and / or the first electrode of the third light-emitting device overlaps the third isolation portion.

[0016] In an optional embodiment, the first isolation portion and the second isolation portion are arranged at intervals;

[0017] Preferably, the display panel comprises a first display area and a second display area, the light transmittance of the first display area is greater than the light transmittance of the second display area, and the first isolation portion and the second isolation portion are located in the first display area;

[0018] Preferably, the first display area is a transparent display area.

[0019] In an optional embodiment, the first isolation portion and the second isolation portion are connected to form an integrated structure;

[0020] Preferably, the display panel comprises a first display area and a second display area, the transmittance of the first display area is greater than the transmittance of the second display area, and the first isolation portion and the second isolation portion are located in the second display area.

[0021] In an alternative embodiment,

[0022] The at least one isolation structure comprises a first part and a second part which are sequentially stacked in a direction away from the substrate, wherein an orthographic projection of the second part on the substrate covers an orthographic projection of the first part on the substrate;

[0023] The first thickness is the thickness of the first portion of the first isolation portion, and the second thickness is the thickness of the first portion of the second isolation portion.

[0024] In an optional embodiment, the light emitting color of the first light emitting device is blue, and the first thickness is less than the second thickness;

[0025] Preferably, the light emitting color of the second light emitting device is green or red;

[0026] Preferably, the at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, the third isolation portion having a third thickness in the first direction, the plurality of light-emitting devices further comprising a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device being located in the third isolation opening, wherein the first thickness is less than the third thickness;

[0027] Preferably, the second thickness is smaller than the third thickness, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0028] In an optional embodiment, the at least one isolation structure comprises a first part and a second part which are sequentially stacked in a direction away from the substrate, wherein:

[0029] The first portion includes a first side wall and a second side wall, the first side wall faces the first isolation opening, and the second side wall faces the second isolation opening;

[0030] The second portion includes a first protrusion and a second protrusion, the first protrusion has a first length relative to the protrusion of the orthographic projection of the first portion on the substrate, the second protrusion has a second length relative to the protrusion of the orthographic projection of the first portion on the substrate, and the first length is different from the second length;

[0031] Preferably, the light emitting color of the first light emitting device is blue, and the first length is greater than the second length;

[0032] Preferably, the light emitting color of the second light emitting device is green or red;

[0033] Preferably, the at least one isolation structure further encloses a third isolation opening, the plurality of light-emitting devices further include a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device is located in the third isolation opening, the first portion further includes a third sidewall facing the third isolation opening, the second portion further includes a third protrusion, the third protrusion has a third length relative to a protrusion of an orthographic projection of the first portion on the substrate, wherein at least two of the first length, the second length and the third length are different;

[0034] Preferably, the first length, the second length and the third length are different from each other;

[0035] Preferably, the first length is greater than the third length;

[0036] Preferably, the second length is greater than the third length, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0037] In an optional embodiment, the at least one isolation structure includes a first part and a second part which are sequentially stacked in a direction away from the substrate, and an orthographic projection of the second part on the substrate covers an orthographic projection of the first part on the substrate, wherein:

[0038] In a cross section passing through the first isolation opening and perpendicular to the substrate, the second portion of the first isolation portion has a first size, and in a cross section passing through the second isolation opening and perpendicular to the substrate, the second portion of the second isolation portion has a second size, and the first size is different from the second size;

[0039] Preferably, the light emitting color of the first light emitting device is blue, and the first size is larger than the second size;

[0040] Preferably, the light emitting color of the second light emitting device is green or red;

[0041] Preferably, the at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, the plurality of light-emitting devices further comprises a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device is located in the third isolation opening, and on a positive cross section passing through the third isolation opening and perpendicular to the substrate, the second portion of the third isolation portion has a third size, wherein at least two of the first size, the second size and the third size are different;

[0042] Preferably, the first size, the second size and the third size are different from each other;

[0043] Preferably, the first size is greater than the third size;

[0044] Preferably, the second size is greater than the third size, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0045] In an alternative embodiment,

[0046] The first isolating portion, the second isolating portion and the third isolating portion are spaced apart from each other, and the second portion of the first isolating portion, the second portion of the second isolating portion and the second portion of the third isolating portion are spaced apart from each other; or

[0047] The first isolating portion, the second isolating portion, and the third isolating portion are connected to form an integrated structure, and the second portion of the first isolating portion, the second portion of the second isolating portion, and the second portion of the third isolating portion are connected to form an integrated structure.

[0048] In an optional embodiment, the display panel further includes:

[0049] a pixel defining layer, disposed on one side of the substrate, comprising a pixel defining portion and a plurality of pixel openings formed by the pixel defining portion, wherein the plurality of pixel openings comprises a first pixel opening and a second pixel opening, wherein the first pixel opening is connected to the first isolation opening, and the second pixel opening is connected to the second isolation opening;

[0050] Preferably, the at least one isolation structure is located on a side of the pixel defining portion facing away from the substrate.

[0051] In an optional embodiment, the light-emitting device includes a second electrode, wherein a portion of the second electrode of the first light-emitting device is located between the substrate and the pixel defining portion, and another portion is exposed from the first pixel opening, and a portion of the second electrode of the second light-emitting device is located between the substrate and the pixel defining portion, and another portion is exposed from the second pixel opening.

[0052] In an optional embodiment, the display panel further includes:

[0053] A first encapsulation layer, comprising a first encapsulation portion and a second encapsulation portion, wherein the first encapsulation portion covers a side of the first light-emitting device away from the substrate and extends to a side of the first isolation portion away from the substrate, and the second encapsulation portion covers a side of the second light-emitting device away from the substrate and extends to a side of the second isolation portion away from the substrate;

[0054] Preferably, the display panel further includes:

[0055] a second encapsulation layer, located on a side of the first encapsulation layer away from the substrate;

[0056] a third encapsulation layer, located on a side of the second encapsulation layer away from the substrate;

[0057] Preferably, the materials of the first encapsulation layer and the third encapsulation layer include inorganic materials, and the material of the second encapsulation layer includes organic materials.

[0058] In an optional embodiment, the material of the first portion includes aluminum, and / or the material of the second portion includes titanium.

[0059] In an optional embodiment, the at least one isolation structure further includes a third portion, the third portion is disposed on a side of the first portion facing the substrate, and an orthographic projection of the third portion on the substrate covers an orthographic projection of the first portion on the substrate;

[0060] The light emitting device comprises a light emitting functional layer and a first electrode which are sequentially stacked in a direction away from the substrate, and the first electrode overlaps the third portion;

[0061] Preferably, the material of the third portion includes molybdenum.

[0062] According to a second aspect of an embodiment of the present application, a display device is provided, comprising a display panel as described in any one of the first aspects.

[0063] According to the solution provided in the embodiment of the present application, in the process of manufacturing the OLED panel, during its graphic processing, the side wall of the first part (isolation body) in the isolation structure is etched and shrunk, which may easily cause the conductive part to fail to overlap with the electrode in the light-emitting device. For this reason, in the solution of the embodiment of the present application, for multiple light-emitting devices, the thickness of the first part (isolation body) in the corresponding isolation part is set to be different, so as to ensure that at the same evaporation angle, the light-emitting device formed later can be evaporated with enough electrode material, so that the side wall of the first part that is etched and shrunk can still be successfully overlapped with the electrode, thereby effectively reducing the dark spot problem and improving the yield rate of the OLED panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0065] Figure 1 It is a schematic diagram of the structure of a part of an OLED panel;

[0066] Figure 2 is a partial schematic diagram of a display panel film layer structure according to an embodiment of the present application;

[0067] Figure 3 A partial schematic diagram of a film layer structure of another implementation manner of a display panel according to an embodiment of the present application;

[0068] Figure 4 It is a partial schematic diagram of a film layer structure when a first light-emitting device is formed on the second display panel according to an embodiment of the present application;

[0069] Figure 5 It is a partial schematic diagram of a film layer structure when a first light-emitting device is formed in another implementation manner of the second display panel according to an embodiment of the present application;

[0070] Figure 6 It is a partial schematic diagram of a film structure when a first light-emitting device is formed on the third display panel according to an embodiment of the present application;

[0071] Figure 7 It is a partial schematic diagram of the film structure when the first light-emitting device is formed in another implementation manner of the third display panel according to an embodiment of the present application. DETAILED DESCRIPTION

[0072] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0073] OLED (Organic Light Emitting Diode, active matrix organic light-emitting diode) is a device that produces electroluminescence through a multi-layer film structure. It is easy to make, has high definition and good flexibility. It is widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc., and has become the mainstream in display devices.

[0074] In the process of implementing the present invention, the inventors found that the related art has the following problems: Figure 1 A schematic diagram of the structure of a part of an OLED panel in the prior art is shown, in which the first part (isolation body) in the isolation structure is set to have the same thickness. During its graphic processing, the side wall of the first part (isolation body) in the isolation structure is etched to cause inward shrinkage. At the same evaporation angle, the problem of the conductive part not being able to overlap with the electrode in the light-emitting device is likely to occur.

[0075] Based on this, the solution of the embodiment of the present application provides a display panel, such as Figure 2 As shown, in the display panel of this embodiment, it includes: a substrate 10; the substrate 10 can be implemented as a TFT (Thin Film Transistor) array substrate, the array substrate includes a plurality of TFTs, and each TFT includes an active layer, a gate insulating film, a gate electrode and other parts.

[0076] The display panel of this embodiment further includes: at least one isolation structure disposed on one side of the substrate 10, and a pixel defining layer disposed on one side of the substrate 10. The pixel defining layer includes a plurality of pixel defining portions 31, and a plurality of pixel openings formed by the pixel defining portions 31. In a feasible manner, the isolation structure is disposed on the side of the pixel defining portion 31 facing away from the substrate 10.

[0077] The corresponding structural parts mentioned below, such as the contents of the isolation structure, are described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, PCT / CN20 23 / 134518, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0078] At least one isolation structure includes a first isolation portion and a second isolation portion; wherein the first isolation portion encloses a first isolation opening 41, and the first isolation opening 41 is connected to a first pixel opening among a plurality of pixel openings, and the second isolation portion encloses a second isolation opening 42, and the second isolation opening 42 is connected to a second pixel opening among a plurality of pixel openings. In one feasible manner, at least one isolation structure further includes a third isolation portion, and the third isolation portion encloses a third isolation opening 43, and the third isolation opening 43 is connected to a third pixel opening among a plurality of pixel openings. The first isolation opening 41, the second isolation opening 42, and the third isolation opening 43 are used to accommodate light-emitting devices, and each light-emitting device is separated by the isolation structure.

[0079] At least one isolation structure includes a first portion 51 and a second portion 52, and the second portion 52 is disposed on a side of the first portion 51 away from the substrate 10. The materials of the first portion 51 and the second portion 52 are implemented to include metal materials. In one feasible manner, the material of the first portion 51 includes aluminum (Al). In one feasible manner, the material of the second portion 52 includes titanium (Ti), and through the hardness and chemical stability of the Ti metal, at least part of the isolation opening is shielded and protected during the manufacturing process of the display panel. In one feasible manner, at least one isolation structure also includes a third portion 53, and the material of the third portion 53 includes molybdenum (Mo). The third portion 53 is used to improve the stability between the first portion 51 and the pixel defining portion 31, and prevent the elements in the first portion 51 from diffusing into the pixel defining portion 31, thereby extending the life of the display panel. The third part 53 is arranged on the side of the first part 51 facing the substrate 10, the orthographic projection of the third part 53 on the substrate 10 covers the orthographic projection of the first part 51 on the substrate 10, and the orthographic projection of the second part 52 on the substrate 10 covers the orthographic projection of the first part 51 on the substrate 10. The first part 51 includes a first side wall 81 and a second side wall 82, the first side wall 81 faces the first isolation opening 41, and the second side wall 82 faces the second isolation opening 42. In a feasible manner, the first part 51 also includes a third side wall 83 facing the third isolation opening 43. In the manufacturing process of the display panel, at least one isolation structure can shield and protect at least part of the light-emitting device.

[0080] The display panel of this embodiment also includes a plurality of light-emitting devices, which can realize the color display of the display panel, and the plurality of light-emitting devices include a first light-emitting device and a second light-emitting device with different light-emitting colors. Among them, the first light-emitting device is located in the first isolation opening 41, and the second light-emitting device is located in the second isolation opening 42. In a feasible manner, the plurality of light-emitting devices also include a third light-emitting device, and the third light-emitting device is located in the third isolation opening 43. Among them, the light-emitting colors of the first light-emitting device, the second light-emitting device and the third light-emitting device are different from each other. In a feasible manner, the light-emitting color of the first light-emitting device is blue, which can maximize the aperture ratio of the blue light-emitting color and ensure that the blue light-emitting color is not interfered by the formation of other light-emitting colors. In a feasible manner, the light-emitting color of the second light-emitting device is green or red.

[0081] In a plurality of light-emitting devices, the light-emitting device includes a first electrode 70, a light-emitting functional layer 60, and a second electrode 20. In one feasible manner, the light-emitting functional layer 60 can be formed based on an EL (Electro-Luminescence, electroluminescent material) material. A portion of the second electrode 20 is located between the substrate 10 and the pixel defining portion 31, and another portion is exposed from the pixel opening. The light-emitting functional layer 60 is located on the side of the second electrode 20 away from the substrate 10, and the first electrode 70 is located on the side of the light-emitting functional layer 60 away from the substrate 10. In one feasible manner, the second electrode 20 is implemented as an anode, which is used to cooperate with the first electrode 70 to realize the light-emitting function of the light-emitting device. The first electrode 70 in the first light-emitting device is overlapped with the first isolation portion. In one feasible manner, the first electrode 70 is overlapped with the first portion in the first isolation portion, which is used to receive an electrical signal and cooperate with the second electrode 20 to realize the light-emitting function of the light-emitting device, and the first electrode 70 is overlapped with the third portion in the first isolation portion. The first electrode 70 in the second light-emitting device overlaps with the second isolation portion. In one feasible manner, the first electrode 70 overlaps with the first portion of the second isolation portion, and the first electrode 70 overlaps with the third portion of the second isolation portion. The first electrode 70 in the third light-emitting device overlaps with the third isolation portion. In one feasible manner, the first electrode 70 overlaps with the first portion of the third isolation portion, and the first electrode 70 overlaps with the third portion of the third isolation portion. In one feasible manner, the first electrode 70 is implemented as a cathode.

[0082] The display panel of this embodiment further includes a first encapsulation layer, including a first encapsulation part 91 and a second encapsulation part 92. The first encapsulation part 91 covers the side of the first light-emitting device away from the substrate 10 and extends to the side of the first isolation part away from the substrate 10. The second encapsulation part 92 covers the side of the second light-emitting device away from the substrate 10 and extends to the side of the second isolation part away from the substrate 10. In a feasible manner, the first encapsulation layer also includes a third encapsulation part 93, and the third encapsulation part 93 covers the side of the third light-emitting device away from the substrate 10 and extends to the side of the third isolation part away from the substrate 10. In a preferred embodiment, the display panel of this embodiment further includes a second encapsulation layer 100 and a third encapsulation layer 110. The second encapsulation layer 100 is located on the side of the first encapsulation layer away from the substrate 10, and the third encapsulation layer 110 is located on the side of the second encapsulation layer 100 away from the substrate 10. In a feasible manner, the materials of the first encapsulation layer and the third encapsulation layer 110 include inorganic materials; the material of the second encapsulation layer 100 includes organic materials.

[0083] In a first direction perpendicular to the substrate 10, the first isolation portion has a first thickness, the second isolation portion has a second thickness, and the third isolation portion has a third thickness, and the first thickness and the second thickness are different. In a feasible manner, the first thickness is the thickness of the first part 51 of the first isolation portion in the first direction perpendicular to the substrate 10, the second thickness is the thickness of the first part 51 of the second isolation portion in the first direction perpendicular to the substrate 10, and the third thickness is the thickness of the first part 51 of the third isolation portion in the first direction perpendicular to the substrate 10, and at least two of the first thickness, the second thickness and the third thickness are different. In a feasible manner, the first thickness, the second thickness and the third thickness are different from each other. In a preferred embodiment, the light emitting color of the first light emitting device is blue, and the first thickness is less than the second thickness. In another preferred embodiment, the first thickness is less than the second thickness, and the first thickness is less than the third thickness. In another preferred embodiment, the first thickness is less than the second thickness, and the second thickness is less than the third thickness, the light emitting color of the first light emitting device is blue, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0084] Therefore, during the patterning process, the first thickness is smaller than the second thickness, which can ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the light-emitting functional layer 60 of the second light-emitting device, so that the first part of the second isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to enable the second light-emitting device to successfully emit light.

[0085] The second thickness is smaller than the third thickness, which can ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the side of the light-emitting functional layer 60 of the third light-emitting device away from the substrate 10, so that the first part of the third isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to make the third light-emitting device emit light successfully.

[0086] Thereby, the problem of dark spots caused by the failure of the first portion 51 and the first electrode 70 to overlap successfully due to the inward shrinkage of the side wall of the isolation structure is solved, thereby improving the yield rate of the OLED panel.

[0087] The display panel of this embodiment includes a first display area and a second display area. The light transmittance of the first display area is greater than the light transmittance of the second display area. In a preferred embodiment, the first display area is a transparent display area, which can achieve better picture display.

[0088] In one embodiment, the first isolation portion and the second isolation portion are located in the first display area, wherein the first isolation portion and the second isolation portion are spaced apart from each other. Figure 3As shown. In one feasible manner, the third isolation part is also located in the first display area, and the first isolation part, the second isolation part and the third isolation part are arranged at intervals. In this embodiment, by arranging the first isolation part, the second isolation part and the third isolation part at intervals, a higher light transmittance is achieved, and a better picture display can be achieved.

[0089] In another embodiment, the first isolation portion and the second isolation portion are located in the second display area, wherein the first isolation portion and the second isolation portion are connected to form an integrated structure, such as Figure 2 In one feasible manner, the third isolation portion is also located in the second display area, and the first isolation portion, the second isolation portion and the third isolation portion are sequentially connected to form an integrated structure.

[0090] In a second feasible solution, in at least one isolation structure, the second portion 52 includes a first protrusion and a second protrusion, the first protrusion has a first length relative to the protrusion of the orthographic projection of the first portion 51 on the substrate 10, the second protrusion has a second length relative to the protrusion of the orthographic projection of the first portion 51 on the substrate 10, and the first length is different from the second length. In a feasible manner, the second portion 52 also includes a third protrusion, and the third protrusion has a third length relative to the protrusion of the orthographic projection of the first portion 51 on the substrate 10.

[0091] In one feasible manner, at least two of the first length, the second length and the third length are different; in a preferred embodiment, the first length, the second length and the third length are different from each other. In a preferred embodiment, the light emitting color of the first light emitting device is blue, which can maximize the aperture ratio of the blue light emitting color and ensure that the blue light emitting color is not interfered by other light emitting colors when formed, the light emitting color of the second light emitting device is green or red, and the first length is greater than the second length. In another preferred embodiment, the first length is greater than the second length, and the first length is greater than the third length. In another preferred embodiment, the first length is greater than the second length, and the second length is greater than the third length, the light emitting color of the first light emitting device is blue, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0092] Therefore, during the patterning process, the first length is greater than the second length to ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the light-emitting functional layer 60 of the second light-emitting device, so that the first part of the second isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to enable the second light-emitting device to successfully emit light.

[0093] The second length being greater than the third length can ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the side of the light-emitting functional layer 60 of the third light-emitting device that is away from the substrate 10, so that the first part of the third isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to enable the third light-emitting device to successfully emit light.

[0094] Thereby, the problem of dark spots caused by the failure of the first portion 51 and the first electrode 70 to overlap successfully due to the inward shrinkage of the side wall of the isolation structure is solved, thereby improving the yield rate of the OLED panel.

[0095] In one embodiment, the first isolation portion and the second isolation portion are located in the first display area, wherein the first isolation portion and the second isolation portion are arranged at intervals. Figure 5 As shown, the third isolation part is also located in the first display area, and the first isolation part, the second isolation part and the third isolation part are arranged at intervals. In this embodiment, by arranging the first isolation part, the second isolation part and the third isolation part at intervals, a higher light transmittance is achieved, and a better picture display can be achieved.

[0096] In another embodiment, the first isolation portion and the second isolation portion are located in the second display area, wherein the first isolation portion and the second isolation portion are connected to form an integrated structure. Figure 4 As shown, the third isolation portion is also located in the second display area, and the first isolation portion, the second isolation portion and the third isolation portion are sequentially connected to form an integrated structure.

[0097] The implementation methods of other structures of the display panel in this solution refer to the description of the corresponding parts in the above embodiments, which will not be repeated here.

[0098] In a third feasible solution, on a cross section passing through the first isolation opening 41 and perpendicular to the substrate 10, the second portion 52 of the first isolation portion has a first size, and on a cross section passing through the second isolation opening 42 and perpendicular to the substrate 10, the second portion 52 of the second isolation portion has a second size, and the first size is different from the second size. In a feasible way, on a cross section passing through the third isolation opening 43 and perpendicular to the substrate 10, the second portion 52 of the third isolation portion has a third size.

[0099] In one feasible manner, at least two of the first size, the second size, and the third size are different; in a preferred embodiment, the first size, the second size, and the third size are different from each other. In a preferred embodiment, the light emitting color of the first light emitting device is blue, which can maximize the aperture ratio of the blue light emitting color and ensure that the blue light emitting color is not interfered by other light emitting colors when formed, the light emitting color of the second light emitting device is green or red, and the first size is larger than the second size. In another preferred embodiment, the first size is larger than the second size, and the first size is larger than the third size. In another preferred embodiment, the first size is larger than the second size, and the second size is larger than the third size, the light emitting color of the first light emitting device is blue, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

[0100] Therefore, during the patterning process, the first size is larger than the second size to ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the light-emitting functional layer 60 of the second light-emitting device, so that the first part of the second isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to enable the second light-emitting device to successfully emit light.

[0101] The second size being larger than the third size can ensure that at the same evaporation angle, more first electrodes 70 are evaporated on the side of the light-emitting functional layer 60 of the third light-emitting device that is away from the substrate 10, so that the first part of the third isolation part can be successfully overlapped with the first electrode 70, thereby transmitting the electrical signal to the first electrode 70, and cooperating with the second electrode 20 to make the third light-emitting device emit light successfully.

[0102] Thereby, the problem of dark spots caused by the failure of the first portion 51 and the first electrode 70 to overlap successfully due to the inward shrinkage of the side wall of the isolation structure is solved, thereby improving the yield rate of the OLED panel.

[0103] In one embodiment, the first isolation portion and the second isolation portion are located in the first display area, wherein the first isolation portion and the second isolation portion are arranged at intervals. Figure 7 As shown, the third isolation part is also located in the first display area, and the first isolation part, the second isolation part and the third isolation part are arranged at intervals. In this embodiment, by arranging the first isolation part, the second isolation part and the third isolation part at intervals, a higher light transmittance is achieved, and a better picture display can be achieved.

[0104] In another embodiment, the first isolation portion and the second isolation portion are located in the second display area, wherein the first isolation portion and the second isolation portion are connected to form an integrated structure. Figure 6As shown, the third isolation portion is also located in the second display area, and the first isolation portion, the second isolation portion and the third isolation portion are sequentially connected to form an integrated structure.

[0105] The implementation methods of other structures of the display panel in this solution refer to the description of the corresponding parts in the above embodiments, which will not be repeated here.

[0106] Further optionally, an embodiment of the present application also provides a display device, which includes the display panel as described above.

[0107] The above implementation methods are only used to illustrate the embodiments of the present application, and are not limitations on the embodiments of the present application. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present application. The scope of patent protection of the embodiments of the present application should be limited by the claims.

Claims

1. A display panel, characterized in that: At least: substrate; At least one isolation structure is disposed on one side of the substrate, the at least one isolation structure comprises a first isolation portion and a second isolation portion, the first isolation portion encloses a first isolation opening, and the second isolation portion encloses a second isolation opening; A plurality of light emitting devices, the plurality of light emitting devices comprising a first light emitting device and a second light emitting device having different light emitting colors, the first light emitting device being located in the first isolation opening, and the second light emitting device being located in the second isolation opening; In a first direction perpendicular to the substrate, the first isolation portion has a first thickness, the second isolation portion has a second thickness, and the first thickness is different from the second thickness.

2. The display panel according to claim 1, characterized in that: The at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, wherein the third isolation portion has a third thickness in the first direction; The plurality of light emitting devices further include a third light emitting device, the first light emitting device, the second light emitting device and the third light emitting device emit different colors, and the third light emitting device is located in the third isolation opening; wherein at least two of the first thickness, the second thickness and the third thickness are different; Preferably, the first thickness, the second thickness and the third thickness are different from each other; Preferably, the light-emitting device includes a light-emitting functional layer and a first electrode which are stacked in sequence in a direction away from the substrate, the first electrode of the first light-emitting device overlaps the first isolation portion, and / or the first electrode of the second light-emitting device overlaps the second isolation portion, and / or the first electrode of the third light-emitting device overlaps the third isolation portion.

3. The display panel according to claim 1, characterized in that: The first isolation part and the second isolation part are arranged at intervals; Preferably, the display panel comprises a first display area and a second display area, the light transmittance of the first display area is greater than the light transmittance of the second display area, and the first isolation portion and the second isolation portion are located in the first display area; Preferably, the first display area is a transparent display area.

4. The display panel according to claim 1, characterized in that: The first isolation part and the second isolation part are connected to form an integrated structure; Preferably, the display panel comprises a first display area and a second display area, the transmittance of the first display area is greater than the transmittance of the second display area, and the first isolation portion and the second isolation portion are located in the second display area.

5. The display panel according to claim 1, characterized in that: The at least one isolation structure comprises a first part and a second part which are sequentially stacked in a direction away from the substrate, wherein an orthographic projection of the second part on the substrate covers an orthographic projection of the first part on the substrate; The first thickness is the thickness of the first portion of the first isolation portion, and the second thickness is the thickness of the first portion of the second isolation portion.

6. The display panel according to claim 1, characterized in that: The light emitting color of the first light emitting device is blue, and the first thickness is smaller than the second thickness; Preferably, the light emitting color of the second light emitting device is green or red; Preferably, the at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, the third isolation portion having a third thickness in the first direction, the plurality of light-emitting devices further comprising a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device being located in the third isolation opening, wherein the first thickness is less than the third thickness; Preferably, the second thickness is smaller than the third thickness, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

7. The display panel according to claim 1, characterized in that: The at least one isolation structure comprises a first portion and a second portion which are sequentially stacked in a direction away from the substrate, wherein: The first portion includes a first side wall and a second side wall, the first side wall faces the first isolation opening, and the second side wall faces the second isolation opening; The second portion includes a first protrusion and a second protrusion, the first protrusion has a first length relative to the protrusion of the orthographic projection of the first portion on the substrate, the second protrusion has a second length relative to the protrusion of the orthographic projection of the first portion on the substrate, and the first length is different from the second length; Preferably, the light emitting color of the first light emitting device is blue, and the first length is greater than the second length; Preferably, the light emitting color of the second light emitting device is green or red; Preferably, the at least one isolation structure further encloses a third isolation opening, the plurality of light-emitting devices further include a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device is located in the third isolation opening, the first portion further includes a third sidewall facing the third isolation opening, the second portion further includes a third protrusion, the third protrusion has a third length relative to a protrusion of an orthographic projection of the first portion on the substrate, wherein at least two of the first length, the second length and the third length are different; Preferably, the first length, the second length and the third length are different from each other; Preferably, the first length is greater than the third length; Preferably, the second length is greater than the third length, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

8. The display panel according to claim 1, characterized in that: The at least one isolation structure comprises a first part and a second part which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of the second part on the substrate covers the orthographic projection of the first part on the substrate, wherein: In a cross section passing through the first isolation opening and perpendicular to the substrate, the second portion of the first isolation portion has a first size, and in a cross section passing through the second isolation opening and perpendicular to the substrate, the second portion of the second isolation portion has a second size, and the first size is different from the second size; Preferably, the light emitting color of the first light emitting device is blue, and the first size is larger than the second size; Preferably, the light emitting color of the second light emitting device is green or red; Preferably, the at least one isolation structure further comprises a third isolation portion enclosing a third isolation opening, the plurality of light-emitting devices further comprises a third light-emitting device having a light-emitting color different from that of the first light-emitting device and the second light-emitting device, the third light-emitting device is located in the third isolation opening, and on a positive cross section passing through the third isolation opening and perpendicular to the substrate, the second portion of the third isolation portion has a third size, wherein at least two of the first size, the second size and the third size are different; Preferably, the first size, the second size and the third size are different from each other; Preferably, the first size is greater than the third size; Preferably, the second size is greater than the third size, the light emitting color of the second light emitting device is green, and the light emitting color of the third light emitting device is red.

9. The display panel according to claim 8, characterized in that: The first isolating portion, the second isolating portion and the third isolating portion are spaced apart from each other, and the second portion of the first isolating portion, the second portion of the second isolating portion and the second portion of the third isolating portion are spaced apart from each other; or The first isolating portion, the second isolating portion, and the third isolating portion are connected to form an integrated structure, and the second portion of the first isolating portion, the second portion of the second isolating portion, and the second portion of the third isolating portion are connected to form an integrated structure.

10. The display panel according to claim 1, characterized in that: The display panel further includes: a pixel defining layer, disposed on one side of the substrate, comprising a pixel defining portion and a plurality of pixel openings formed by the pixel defining portion, wherein the plurality of pixel openings comprises a first pixel opening and a second pixel opening, wherein the first pixel opening is connected to the first isolation opening, and the second pixel opening is connected to the second isolation opening; Preferably, the at least one isolation structure is located on a side of the pixel defining portion facing away from the substrate.

11. The display panel according to claim 10, characterized in that: The light-emitting device includes a second electrode, wherein a portion of the second electrode of the first light-emitting device is located between the substrate and the pixel defining portion, and another portion is exposed from the first pixel opening, and a portion of the second electrode of the second light-emitting device is located between the substrate and the pixel defining portion, and another portion is exposed from the second pixel opening.

12. The display panel according to claim 1, characterized in that: The display panel further includes: A first encapsulation layer, comprising a first encapsulation portion and a second encapsulation portion, wherein the first encapsulation portion covers a side of the first light-emitting device away from the substrate and extends to a side of the first isolation portion away from the substrate, and the second encapsulation portion covers a side of the second light-emitting device away from the substrate and extends to a side of the second isolation portion away from the substrate; Preferably, the display panel further includes: a second encapsulation layer, located on a side of the first encapsulation layer away from the substrate; a third encapsulation layer, located on a side of the second encapsulation layer away from the substrate; Preferably, the materials of the first encapsulation layer and the third encapsulation layer include inorganic materials, and the material of the second encapsulation layer includes organic materials.

13. The display panel according to claim 5 or 7, characterized in that: The material of the first portion includes aluminum, and / or the material of the second portion includes titanium.

14. The display panel according to claim 13, characterized in that: The at least one isolation structure further includes a third portion, the third portion is disposed on a side of the first portion facing the substrate, and an orthographic projection of the third portion on the substrate covers an orthographic projection of the first portion on the substrate; The light emitting device comprises a light emitting functional layer and a first electrode which are sequentially stacked in a direction away from the substrate, and the first electrode overlaps the third portion; Preferably, the material of the third portion includes molybdenum.

15. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 14.

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