Display panel and electronic equipment

Abstract

The utility model discloses a display panel and electronic equipment, the display panel comprises a plurality of pixel units and a plurality of virtual pixel units, the plurality of pixel units are distributed in an array, the pixel units and the virtual pixel units are arranged at intervals, or the virtual pixel units and the pixel units are communicated through first channels, and the first channels are communicated with the virtual pixel units through second channels. The width of the first channel in the X direction is smaller than the width of the virtual pixel unit in the X direction and the width of the pixel unit in the X direction, and the light emitting uniformity of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optoelectronics, in particular to a display panel and electronic equipment. BACKGROUND

[0002] In the related art, a solution method is generally used to prepare a light-emitting functional layer of a display panel. For a large-size display panel, a printing process is usually used to prepare the light-emitting functional layer, which has the advantages of low cost and high productivity. However, the current printing process still has some problems. For example, in the printing and drying process, the solvent evaporation rate of the edge of the liquid film formed by printing is higher than that of the middle region of the liquid film. Therefore, under the action of surface tension, the liquid film will shrink to the middle at a faster rate, resulting in the phenomenon that the thickness of the edge region is thinner and the thickness of the middle region is thicker, the thickness uniformity of the formed thin film is poor, and the display effect is affected. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a display panel and electronic equipment.

[0004] In a first aspect, the present application provides a display panel, which comprises a plurality of pixel units and a plurality of virtual pixel units, and the plurality of pixel units are arranged in an array; the pixel units and the virtual pixel units are arranged with a spacing therebetween, or the virtual pixel units and the pixel units are connected through a first channel, and the width of the first channel in the X direction is less than the width of the virtual pixel unit in the X direction and the width of the pixel unit in the X direction.

[0005] In a second aspect, the present application provides electronic equipment, which comprises a power supply assembly and a display panel as described in the first aspect, and the power supply assembly is electrically connected with the display panel.

[0006] The present application provides a display panel and electronic equipment, which has the following technical effects:

[0007] In the display panel provided by the present application, by arranging the pixel units and the virtual pixel units with a spacing therebetween or connecting the virtual pixel units and the pixel units through a first channel, the thickness uniformity of the film layer formed by inkjet printing in the pixel unit can be improved, thereby improving the light-emitting uniformity of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0008] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of specific embodiments of the present application, combined with the accompanying drawings.

[0009] Figure 1 The first display panel provided by the present application is shown in the top view, wherein the light-emitting functional layer is not filled.

[0010] Figure 2 A plan view of a fourth display panel provided by an embodiment of the present application, wherein the light-emitting functional layer is not filled.

[0011] Figure 3 A plan view of a third display panel provided by an embodiment of the present application, wherein the light-emitting functional layer is not filled.

[0012] Figure 4 A plan view of a fourth display panel provided by an embodiment of the present application, wherein the light-emitting functional layer is not filled.

[0013] Figure 5 A sectional view of the fourth display panel provided by an embodiment of the present application in the A-A direction, wherein the light-emitting functional layer is not filled, and the projection of the hydrophobic pixel definition layer on the sectional surface is not considered.

[0014] Figure 6 A sectional view of the fourth display panel provided by an embodiment of the present application in the B-B direction, wherein the light-emitting functional layer is not filled, and the projection of the hydrophobic pixel definition layer on the sectional surface is not considered.

[0015] Figure 7 A plan view of a display panel provided by a comparative example of the present application, wherein the light-emitting functional layer is not filled.

[0016] The signs are as follows:

[0017] 10, display panel; 100a, display area; 100b, first non-display area; 100c, second non-display area 100c; 102, first electrode layer; 103, hydrophilic pixel definition layer; 104, hydrophobic pixel definition layer; 105, pixel unit; 1011, substrate; 1012, drive circuit layer; 1013, planar layer; 1021, first electrode; 1022, redundant electrode; 1031, first opening; 1032, convex structure; 1041, second opening; 1042, virtual pixel unit; 1043, first channel; 1044, second channel; 10420, virtual sub-pixel unit. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Also, any method and material similar or equivalent to those described herein can be used in the practice of the present application. The described preferred embodiments are intended to be only illustrative of the application and not limiting thereof.

[0020] It should be noted that the sequence of the following embodiments is not intended to limit the preferred order of the embodiments, and each embodiment of the present application can exist in a range of forms. It should be understood that the description of the range of forms is merely for the convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application. Therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single values such as 1, 2, 3, 4, 5 and 6, regardless of the range. In addition, whenever a numerical range is indicated in this document, it refers to any cited number (fraction or integer) within the indicated range.

[0021] In the present application, the orientation words such as "upper" and "lower" are generally used to refer to the upper and lower positions of the optoelectronic device in the actual use or working state, specifically the direction of the drawing surface in the drawing; and "inner" and "outer" are used in relation to the outline of the optoelectronic device. The terms first, second, third, etc. are merely used as labels and do not impose a numerical requirement or establish an order.

[0022] In the present application, "A layer is formed on one side of B layer", "A layer is formed on the side of B layer away from C layer" or similar descriptions can mean that A layer is directly formed on one side of B layer or on the side of B layer away from C layer, i.e. A layer is in direct contact with B layer, or it can mean that A layer is indirectly formed on one side of B layer or on the side of B layer away from C layer, i.e. other spacer structure layers can be formed between A layer and B layer. Similarly, "A layer is disposed on one side of B layer", "A layer is disposed on the side of B layer away from C layer" can mean that A layer is in direct contact with B layer, or that other spacer structure layers are provided between A layer and B layer; "A layer is disposed between B layer and C layer" can mean that A layer is in direct contact with B layer and C layer, or that one or more spacer structure layers are provided between A layer and B layer and between A layer and C layer, or that one or more spacer structure layers are provided between A layer and B layer and one or more spacer structure layers are provided between A layer and C layer, or that one or more spacer structure layers are provided between A layer and B layer and A layer is in direct contact with C layer.

[0023] The term "including" means "including but not limited to". The term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. The term "at least one" means one or more, and "more than one" means two or more. The terms "at least one", "at least one of the following", or similar expressions refer to any combination of these items, including any combination of a single or plural type. For example, "at least one of a, b, or c" or "at least one of a, b, and c" can be expressed as: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can each be a single or multiple type.

[0024] The term "average particle size" refers to the area-average particle size of a particle swarm. Area-average particle size is calculated by dividing the total volume of the particle swarm by its total area, which is the reciprocal of the surface area per unit volume. If an imaginary swarm of particles with uniform size is used to replace the original swarm, and the total volume and area of ​​this imaginary swarm are identical to the original swarm, then the diameter of this imaginary swarm is the area-average particle size of the original swarm. Area-average particle size can be obtained through statistical analysis, using transmission electron microscopy to statistically analyze the particle size of each particle in the swarm.

[0025] In this application, the thickness of the thin film refers to the average thickness of the thin film, and the thickness of a certain functional layer refers to the average thickness of the functional layer. The thickness is obtained by measuring a step tester.

[0026] The terms “combinations thereof,” “any combination thereof,” and “any combination thereof” as used in this application include all suitable combinations of any two or more of the listed items.

[0027] This application embodiment provides a display panel 10, such as Figures 1 to 6 As shown, the display panel 10 includes a plurality of pixel units 105 and a plurality of virtual pixel units 1042. The plurality of pixel units 105 are arranged in an array, and the pixel units 105 and the virtual pixel units 1042 are spaced apart. Alternatively, the virtual pixel units 1042 and the pixel units 105 are connected by a first channel 1043. The width of the first channel 1043 in the X direction is smaller than the width of the virtual pixel units 1042 in the X direction and the width of the pixel units 105 in the X direction.

[0028] It should be noted that the X direction refers to a direction parallel to the vertical edge of the display panel 10 in the perspective of viewing the display panel 10 from above; the Y direction refers to a direction parallel to the horizontal edge of the display panel 10 in the perspective of viewing the display panel 10 from above; the X direction is perpendicular to the Y direction.

[0029] The width of the pixel unit 105 in the X direction refers to the straight-line distance between the two points farthest apart on the outer contour of the pixel unit 105 parallel to the X direction. For example, when the cross-sectional shape of the pixel unit 105 is circular, the width of the pixel unit 105 in the X direction is the diameter of the circle; for another example, when the cross-sectional shape of the pixel unit 105 is square, the width of the pixel unit 105 in the X direction is the side length of the square.

[0030] Similarly, the width of the first channel 1043 in the X direction refers to the straight-line distance between the two points farthest apart on the outer contour of the first channel 1043 parallel to the X direction. The width of the virtual pixel unit 1042 in the X direction refers to the straight-line distance between the two points farthest apart on the outer contour of the virtual pixel unit 1042 parallel to the X direction.

[0031] In the display panel 10 provided in the embodiments of the present application, by spacing the pixel unit 105 and the virtual pixel unit 1042 apart or by connecting the virtual pixel unit 1042 and the pixel unit 105 through the first channel 1043, the thickness uniformity of the film layer formed by inkjet printing in the pixel unit 105 can be improved, thereby improving the light-emitting uniformity of the display panel 10.

[0032] Specifically, when the pixel unit 105 and the virtual pixel unit 1042 are spaced apart, in the preparation process of the display panel 10, the drying film-forming process in the virtual pixel unit 1042 and the drying film-forming process in the pixel unit 105 do not interfere with each other, avoiding the adverse effects of the film shrinkage effect caused by the faster solvent evaporation in the virtual pixel unit 1042 on the film-forming quality of the functional layer in the pixel unit 105. When the pixel unit 105 and the virtual pixel unit 1042 are connected through the first channel 1043, in the preparation process of the display panel 10, the evaporation rate of the solvent in the virtual pixel unit can be slowed down, the effect of the film shrinking towards the middle can be reduced, and the drying mura occurrence area can be effectively reduced, thereby improving the thickness uniformity of the film layer formed by inkjet printing in the pixel unit.

[0033] In some embodiments of the present application, continuing to refer to Figures 1 to 4 , the plurality of virtual pixel units 1042 are sequentially spaced apart along the X direction.

[0034] In some embodiments of the present application, continuing to refer to Figure 3 and Figure 4Each virtual pixel unit 1042 comprises a plurality of virtual sub-pixel units 10420 arranged in sequence and spaced apart along the Y direction. In each virtual pixel unit 1042, a virtual sub-pixel unit 10420 closest to the pixel unit 105 is arranged in space apart from the pixel unit 105 or is connected in communication through the first channel 1043. This can further avoid or reduce the adverse effects of film layer shrinkage effect caused by faster solvent evaporation in the virtual pixel unit 1042 on the film formation quality in the pixel unit 105, thereby further improving the thickness uniformity of the film layer formed by inkjet printing in the pixel unit 105.

[0035] In some embodiments of the present application, referring back to Figure 4 At least two virtual sub-pixel units 10420 in each virtual pixel unit 1042 are connected in communication through the second channel 1044. The width of the second channel 1044 in the X direction is smaller than the width of the virtual sub-pixel unit 10420 in the X direction, which can slow down the evaporation rate of the solvent in the virtual pixel unit 1042. The width of the second channel 1044 in the X direction refers to the straight-line distance between the two points farthest apart on the outer contour of the second channel 1044 parallel to the X direction.

[0036] In some embodiments of the present application, referring back to Figures 1 to 4 The display panel 10 has a display area 100a, a first non-display area 100b and a second non-display area 100c. The first non-display area 100b and the second non-display area 100c are arranged opposite to each other on two sides of the display area 100a. The Y direction is the direction from the first non-display area 100b to the second non-display area 100c. The plurality of pixel units 105 are arranged in an array in the display area 100a. The first non-display area 100b and / or the second non-display area 100c are provided with virtual pixel units 1042. The non-display area of the display panel 10 can be an annular area, which can be arranged around the display area 100a. In other words, the display panel 10 can further have a third display area and a fourth display area, which are arranged opposite to each other on the other two sides of the display area 100a.

[0037] In order to further improve the light emitting uniformity of the display panel 10, in some embodiments of the present application, the first non-display area 100b and the second non-display area 100c are respectively provided with a plurality of virtual pixel units 1042. The plurality of virtual pixel units 1042 in the first non-display area 100b are arranged in an array, and the plurality of virtual pixel units 1042 in the second non-display area 100c are arranged in an array.

[0038] In some embodiments of the present application, referring back to Figures 1 to 6The display panel 10 comprises an array substrate 101. The array substrate 101 can be a conventional structure of an array substrate in the display technology field, and the array substrate 101 comprises, for example, a substrate 1011, a driving circuit layer 1012 and a planar layer 1013 which are sequentially stacked, and the driving circuit layer 1012 comprises a thin film transistor (TFT). The substrate 1011 can be a rigid substrate or a flexible substrate, and the material of the rigid substrate comprises but is not limited to one or more of glass, ceramic and silicon wafer, and the material of the flexible substrate comprises but is not limited to one or more of polyimide, polycarbonate, polymethyl methacrylate, polyethylene terephthalate, polyethylene naphthalate and polyether sulfone.

[0039] Continuing to refer to Figures 1 to 6 The display panel 10 further comprises a first electrode layer 102 disposed on the array substrate 101, and the first electrode layer 102 comprises a plurality of first electrodes 1021 arranged in an array, i.e., the first electrode layer 102 is a patterned structure. In the X direction, any two adjacent first electrodes 1021 have a first gap therebetween; in the Y direction, any two adjacent first electrodes 1021 have a second gap therebetween. The plurality of first electrodes 1021 are located in the display area 100a.

[0040] Continuing to refer to Figures 1 to 6 The first electrode 1021 is electrically connected to the driving circuit layer 1012 in the array substrate 101, and specifically, the first electrode 1021 is disposed on the side of the planar layer 1013 away from the substrate 1011, and the first electrode 1021 is electrically connected to the driving circuit layer 1012 through a via hole penetrating through the planar layer 1013.

[0041] Continuing to refer to Figures 1 to 6 The display panel 10 further comprises a hydrophilic pixel definition layer 103 disposed on one side of the array substrate 101, and the hydrophilic pixel definition layer 103 covers the second gap between any two adjacent first electrodes 1021. The hydrophilic pixel definition layer 103 has a plurality of first openings 1031 arranged in the Y direction in sequence, and the plurality of first openings 1031 are arranged one by one corresponding to the plurality of first electrodes 1021, and the direct projection of the first opening 1031 on the array substrate 101 at least partially overlaps with the direct projection of the corresponding first electrode 1021 on the array substrate 101, for example, the direct projection of the first opening 1031 on the array substrate 101 is located within the direct projection of the corresponding first electrode 1021 on the array substrate 101, so that each first electrode 1021 is partially exposed to the corresponding first opening 1031. The shape of the first opening 1031 comprises but is not limited to a rectangle, a rounded rectangle or a square. It can be understood that the plurality of first openings 1031 are located in the display area 100a.

[0042] In some embodiments of the present application, each first electrode 1021 includes a first sidewall and a second sidewall, and the first sidewall and the second sidewall are oppositely arranged in the Y direction. In order to improve the phenomenon of leakage, short circuit and the like, the hydrophilic pixel definition layer 103 not only covers the second gap, but also covers the first sidewall and the second sidewall of each first electrode 1021.

[0043] With reference to Figures 1 to 6 , the display panel 10 further includes a hydrophobic pixel definition layer 104 arranged on the array substrate 101, and the hydrophobic pixel definition layer 104 is located on the side of the hydrophilic pixel definition layer 103 away from the array substrate 101, and the hydrophobic pixel definition layer 104 covers the first gap between any two adjacent first electrodes 1021. The hydrophobic pixel definition layer 104 has a plurality of second openings 1041 arranged in sequence and spaced apart along the X direction, and each first opening 1031 is partially exposed to the second opening 1041 to form a pixel unit 105. In other words, the hydrophobic pixel definition layer 104 covers part of the hydrophilic pixel definition layer 103, each first electrode 1021 is partially exposed to the second opening 1041, and the overlapping area between each first opening 1031 and the corresponding second opening 1041 is the pixel unit 105. A plurality of virtual pixel units 1042 are arranged in sequence and spaced apart along the X direction on the hydrophobic pixel definition layer, and each virtual pixel unit 1042 is arranged corresponding to a second opening 1041.

[0044] It should be noted that the plurality of second openings 1041 are located in the display area 100a, and each second opening 1041 has a plurality of pixel units 105 arranged in sequence and spaced apart therein, and any two adjacent pixel units 105 are isolated by the hydrophilic pixel definition layer 103. The shape of the second opening 1041 includes but is not limited to a rectangle, a rounded rectangle or a square.

[0045] In addition, the hydrophilic pixel definition layer 103 can isolate any two pixel units 105 arranged adjacent along the Y direction, so that the ink does not flow between the adjacent two pixel units 105 during inkjet printing, effectively reducing the risk of ink crosstalk between adjacent pixel units 105. Based on the hydrophilic property of the hydrophilic pixel definition layer 103, the ink of the inkjet printing can quickly and stably spread in the pixel unit 105, and the uniformity of the printing ink in the pixel unit 105 can be improved. The hydrophobic pixel definition layer 104 can isolate any two pixel units 105 arranged adjacent along the X direction, and the hydrophobic pixel definition layer 104 is located above the hydrophilic pixel definition layer 103. Based on the hydrophobic property of the hydrophobic pixel definition layer 104, the upward climbing path of the ink can be prolonged, and the ink can be prevented from overflowing from the second opening 1041, further reducing the risk of ink crosstalk between adjacent pixel units 105.

[0046] In some embodiments of the present application, each first electrode 1021 further comprises a third sidewall and a fourth sidewall, the third sidewall and the fourth sidewall are oppositely arranged in the X direction, the third sidewall connects the first sidewall and the second sidewall, and the fourth sidewall connects the first sidewall and the second sidewall. In order to further improve the phenomenon of leakage, short circuit and the like, the hydrophobic pixel definition layer 104 not only covers the first gap, but also covers the third sidewall and the fourth sidewall of each first electrode 1021.

[0047] It should be noted that if each virtual pixel unit 1042 and the corresponding second opening 1041 are designed as an integrated strip-shaped continuous uninterrupted opening structure (as shown in Figure 7 When printing ink, a large number of ink droplets are fused to form a strip-shaped liquid film in the continuous uninterrupted opening structure. With the evaporation of the solvent, the evaporation rate of the solvent at the edge of the strip-shaped liquid film (for example, located in the first non-display area 100b or the second non-display area 100c) is higher than that of the middle area of the strip-shaped liquid film (for example, located in the display area 100a). Under the action of surface tension, the strip-shaped liquid film will accelerate to shrink towards the middle, resulting in the phenomenon that the thickness of the edge area is thinner and the thickness of the middle area is thicker, and the thickness uniformity of the formed film is poor.

[0048] In some embodiments of the present application, continuing to refer to Figures 1 to 6 , the first channel 1043 is located in the hydrophobic pixel definition layer 104, the first channel 1043 is designed as an opening, and the lyophobic pixel definition material in the first channel 1043 needs to be removed completely; the hydrophilic pixel definition layer 103 comprises a plurality of protruding structures 1032 arranged in sequence and spaced apart along the Y direction, one protruding structure 1032 of the plurality of protruding structures 1032 is arranged correspondingly with the first channel 1043 to be partially exposed to the first channel 1043, and the protruding structure 1032 is located between the first channel 1043 and the array substrate 101 to shield the first sidewall or the second sidewall of the first electrode 1021 closest to the first non-display area 100b or the second non-display area 100c, thereby avoiding the phenomenon of leakage, short circuit and the like, and improving the aesthetic appearance and structural compactness of the display panel 10; and in the display area 100a, a first opening 1031 is formed between any two adjacent protruding structures 1032. It can be understood that in the display area 100a, the protruding structure 1032 covers the second gap and covers the first sidewall and the second sidewall of each first electrode 1021. It can be understood that when the display panel 10 comprises a second channel 1044, the second channel 1044 is located in the hydrophobic pixel definition layer 104, and the second channel 1044 is designed as an opening.

[0049] In some other embodiments of the present application, continuing to refer to Figures 4 to 6When the hydrophilic pixel defining layer 103 includes a plurality of protruding structures 1032 and the hydrophobic pixel defining layer 104 has a plurality of second channels 1044, at least some of the second channels 1044 are respectively arranged in correspondence with a protruding structure 1032. It should be noted that when the hydrophobic pixel defining layer 104 has one second channel 1044, the second channel 1044 can be arranged in correspondence with a protruding structure 1032, or no protruding structure 1032 can be arranged below the second channel 1044.

[0050] In some embodiments of the present application, referring back to Figure 5 and Figure 6 The first electrode layer 102 further includes a plurality of redundant electrodes 1022 arranged in an array. The front projection of each redundant electrode 1022 on the array substrate 101 partially overlaps with the front projection of the virtual pixel unit 1042 on the array substrate 101. In the X direction, any two adjacent redundant electrodes have a third gap therebetween, and the hydrophobic pixel defining layer 104 covers the third gap between any two adjacent redundant electrodes 1022. The plurality of redundant electrodes 1022 are located in the first non-display area 100b and / or the second non-display area 100c. In the Y direction, any two adjacent redundant electrodes 1022 have a fourth gap therebetween, and the hydrophilic pixel defining layer 103 covers the fourth gap between any two adjacent redundant electrodes 1022.

[0051] It should be noted that the redundant electrodes 1022 are arranged in isolation from the driving circuit layer 1012, and the shape and size of the redundant electrodes 1022 can be the same as those of the first electrodes 1021. The plurality of redundant electrodes 1022 in the first non-display area 100b can be arranged in an array, and / or the plurality of redundant electrodes 1022 in the second non-display area 100c can be arranged in an array. Each redundant electrode 1022 includes, for example, a fifth side wall and a sixth side wall arranged opposite to each other in the X direction, and the hydrophobic pixel defining layer 104 covers not only the third gap but also the fifth side wall and the sixth side wall of each redundant electrode 1022. Each redundant electrode 1022 further includes, for example, a seventh side wall and an eighth side wall arranged opposite to each other in the Y direction, and the hydrophilic pixel defining layer 103 covers not only the fourth gap but also the seventh side wall and the eighth side wall of each redundant electrode 1022.

[0052] It should be noted that in the first non-display area 100b or the second non-display area 100c, the redundant electrodes 1022 can be arranged in some regions and not arranged in other regions. For the regions where the redundant electrodes 1022 are not arranged, the hydrophilic pixel defining layer 103 can not be arranged.

[0053] In some embodiments of the present application, the display panel 10 further comprises a light-emitting functional layer arranged at the pixel unit 105, the light-emitting functional layer comprising, for example, a hole functional layer, a light-emitting layer, an electron functional layer and a second electrode layer arranged in sequence, the hole functional layer being closer to the first electrode layer 102 than the second electrode layer; one of the first electrode layer 102 and the second electrode layer is an anode layer, and the other is a cathode layer. It should be noted that the light-emitting functional layer and the first electrode 1021 together constitute a light-emitting device, which includes but is not limited to an organic light-emitting diode or a quantum dot light-emitting diode.

[0054] In some embodiments of the present application, the material of the light-emitting layer comprises one or more of organic light-emitting materials and quantum dots, and the thickness of the light-emitting layer is, for example, 10 nm to 100 nm.

[0055] The organic light-emitting material includes but is not limited to one or more of 4,4'-bis(N-carbazole)-1,1'-biphenyl: tris[2-(p-tolyl)pyridine complex of iridium (III), 4,4',4"-tris(carbazole-9-yl)triphenylamine: tris[2-(p-tolyl)pyridine complex of iridium, diaryl anthracene derivative, stilbene aromatic derivative, pyrene derivative, fluorene derivative, TBPe fluorescent material, TTPX fluorescent material, TBRb fluorescent material, DBP fluorescent material, delayed fluorescent material, TTA material, thermally activated delayed material, polymer containing B-N covalent bond, hybrid local charge transfer excited state material, exciplex light-emitting material, polyacetylene and its derivatives, polyparaphenylene and its derivatives, polythiophene and its derivatives, polyfluorene and its derivatives.

[0056] The quantum dots include but are not limited to one or more of red quantum dots, green quantum dots and blue quantum dots, and the quantum dots include but are not limited to one or more of single-component quantum dots, core-shell structure quantum dots, inorganic perovskite quantum dots, organic perovskite quantum dots and organic-inorganic hybrid perovskite quantum dots, the shell layer of the core-shell structure quantum dots being one or more. The average particle size of the quantum dots can be, for example, 2 nm to 30 nm, and examples are 2 nm, 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm, 15 nm, 20 nm, 25 nm, 30 nm or a range between any two of the foregoing.

[0057] For single component quantum dots and core-shell quantum dots, the material of the single component quantum dots, the material of the core of the core-shell quantum dots, or the material of the shell of the core-shell quantum dots includes, but is not limited to, at least one of a II-VI compound, a III-V compound, a III-VI compound, a IV-VI compound, or a I-III-VI compound. Among them, the II-VI compound includes, but is not limited to, one or more of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, and HgZnSTe. The III-VI compound includes, but is not limited to, one or more of In2S3, In2Se3, InGaS3, and InGaSe3. The III-V compound includes, but is not limited to, one or more of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and InAlPSb. The IV-VI compound includes, but is not limited to, one or more of SnS, SnSe, SnTe, PbS, PbSe, PbTe, SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, SnPbSSe, SnPbSeTe, and SnPbSTe. The I-III-VI compound includes, but is not limited to, one or more of AgInS, AgInS2, CuInS, CuInS2, AgGaS2, CuGaS2, CuGaO2, AgGaO2, AgAlO2, AgInGaS2, and CuInGaS2.

[0058] As an example, the core-shell structured quantum dots can include, but are not limited to, one or more of CdSe / CdSeS / CdS, InP / ZnSeS / ZnS, CdZnSe / ZnSe / ZnS, CdSeS / ZnSeS / ZnS, CdSe / ZnS, CdSe / ZnSe / ZnS, ZnSe / ZnS, ZnSeTe / ZnS, CdSe / CdZnSeS / ZnS, and InP / ZnSe / ZnS. It should be noted that the “ / ” in the core-shell structured quantum dots represents a shell layer. Taking CdSe / CdSeS / CdS as an example, CdSe is the quantum dot core, CdSeS is the first shell layer, and CdS is the second shell layer.

[0059] For inorganic perovskite quantum dots, the general structure of the inorganic perovskite quantum dots is QJT3, wherein Q is Cs + , J is a divalent metal cation, J is independently selected at each occurrence from Pb 2+ , Sn 2+ , Cu 2+ , Ni 2+ , Cd 2+ , Cr 2+ , Mn 2+ , Co 2+ , Fe 2+ , Ge 2+ , Yb 2+ , or Eu 2+ , and T is a halide anion, T is independently selected at each occurrence from Cl - , Br - , or I - .

[0060] For organic perovskite quantum dots, the general structure of the organic perovskite quantum dots is LJT3, wherein L is a formamidinium group, and J and T are selected as described above.

[0061] For organic-inorganic hybrid perovskite quantum dots, the general structure of the organic-inorganic hybrid perovskite quantum dots is GJT3, wherein B is selected from an organic amine cation, and the organic amine cation includes, but is not limited to, CH3(CH2) n-2 NH 3+ (n≥2) or NH3(CH2) n NH3 2+(n≥2), the selection range of J and T is referred to the foregoing description. When n=2, the inorganic metal halide octahedron JT64- is connected in a shared vertex manner, the metal cation M is located in the body center of the halogen octahedron, and the organic amine cation B is filled in the gap between the octahedrons to form an infinite three-dimensional structure; when n>2, the inorganic metal halide octahedrons JT64- connected in a shared vertex manner extend in a two-dimensional direction to form a layered structure, and the organic amine cation double molecular layer (protonated monoamine) or the organic amine cation single molecular layer (protonated diamine) is inserted between the layers, and the organic layer and the inorganic layer are overlapped with each other to form a stable two-dimensional layered structure.

[0062] The electronic functional layer can be a single-layer structure or a multi-layer structure, and the thickness of the electronic functional layer is, for example, 10 nm to 100 nm. When the electronic functional layer is a multi-layer structure, the electronic functional layer includes, for example, one or more of an electron injection layer, an electron transport layer, and a hole blocking layer. For the electronic functional layer including the electron injection layer, the electron transport layer, and the hole blocking layer, the electron transport layer is located between the electron injection layer and the hole blocking layer, and the hole blocking layer is closer to the anode layer than the electron injection layer. For the electronic functional layer including the electron transport layer and the hole blocking layer, the hole blocking layer is closer to the anode layer than the electron transport layer. For the electronic functional layer including the electron injection layer and the electron transport layer, the electron transport layer is closer to the anode layer than the electron injection layer.

[0063] In some embodiments of the present application, the material of the electronic functional layer includes one or more of a first organic material, a first inorganic material, and a second inorganic material. The first organic material includes, but is not limited to, one or more of fluorenone, anthraquinone dimethane, diphenylquinone, thiopyran dioxide, oxazole, diazole, triazole, imidazole, perylene tetracarboxylic acid, fluorenylidene methane, and anthrone. The first inorganic material includes one or more of a non-doped first metal oxide and a group IIB-VIA semiconductor material, the non-doped first metal oxide is selected from one or more of ZnO, TiO2, and SnO2, and the group IIB-VIA semiconductor material is selected from one or more of ZnS, ZnSe, and CdS. The second inorganic material includes one or more doped first compounds, and the general formula of the doped first compound is A (1-x) M x E, wherein x is greater than zero and not greater than 0.5 each time, A and M are not the same, and A and M are each independently selected from one or more of Zn, Ti, Sn, Ba, Ta, Al, Zr, Mg, Li, Ga, In, Fe, Mn, and Y each time, and E is independently selected from S or O each time.

[0064] In some embodiments of the present application, the doped first compound is selected from Zn (1-x) Mg x O, Zn(1-x) Ca x O, Zn (1-x) Zr x O, Zn (1-x) Ga x O, Zn (1-x) Al x O, Zn (1-x) Li x O, Zn (1-x) Ti x O, Zn (1-x) Y x O, In (1-x) Sn x O, Ti (1-x) Li x O, Ti (1-x) Mn x O, Ti (1-x) Mg x O, Ti (1-x) Fe x O and Zn (1-x) In x one or more of O, Zn, S, and x is greater than zero and not greater than 0.2 each time it occurs.

[0065] The hole functional layer can be a single layer structure or a multi-layer structure, and the thickness of the hole functional layer is, for example, 10 nm to 100 nm, for example, 40 nm to 70 nm. When the hole functional layer is a multi-layer structure, the hole functional layer includes, for example, one or more of a hole injection layer, a hole transport layer, and an electron blocking layer. For the hole functional layer including the hole injection layer, the hole transport layer, and the electron blocking layer, the hole transport layer is between the hole injection layer and the electron blocking layer, and the hole injection layer is closer to the anode layer than the electron blocking layer. For the hole functional layer including the hole transport layer and the electron blocking layer, the hole transport layer is closer to the anode layer than the electron blocking layer. For the hole functional layer including the hole injection layer and the hole transport layer, the hole injection layer is closer to the anode layer than the hole transport layer.

[0066] In some embodiments of the present application, the material of the hole functional layer comprises one or more of a second organic material, a third inorganic material, and a fourth inorganic material. The second organic material includes, but is not limited to, poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid) (abbreviated as PEDOT:PSS, CAS No. 155090-83-8), copper phthalocyanine (CAS No. 147-14-8), titanium phthalocyanine oxide (CAS No. 26201-32-1), 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanoquinodimethane (CAS No. 29261-33-4), 2,3,6,7,10,11-hexacyano-1,4,5,8,9,12-hexaazatriphenylene (CAS No. 105598-27-4), polyaniline (CAS No. 25233-30-1), polypyrrole (CAS No. 30604-81-0), 3-hexyl-substituted polythiophene (CAS No. 104934-50-1), poly(9-vinylcarbazole) (abbreviated as PVK, CAS No. 25067-59-8), 4,4'-bis(9-carbazolyl)biphenyl (abbreviated as CBP, CAS No. 58328-31-7), poly[bis(4-phenyl)(4-butylphenyl)amine] (abbreviated as Poly-TPD, CAS No. 472960-35-3), 4,4'-cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine] (abbreviated as TAPC, CAS No. 58473-78-2), poly[(9,9-dioctylfluorene-2,7-diyl)-co-(4,4'-N-(4-sec-butyphenyl)diphenylamine)] (abbreviated as TFB, CAS No. 220797-16-0), poly[(N,N'-(4-n-butylphenyl)-N,N'-diphenyl-1,4-benzenediamine)-ALT-(9,9-di-n-octylfluorene-2,7-diyl)] (CAS No. 223569-31-1), 4,4',4''-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (CAS No. 124729-98-2), 4,4',4'-tris(2-naphthylphenylamino)triphenylamine (abbreviated as TCTA, CAS No. 139092-78-7), 4,4',4'-tris(2-naphthylphenylamino)triphenylamine (CAS No. 185690-41-9), N,N'-diphenyl-N,N'-(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (abbreviated as NPB, CAS No. 123847-85-8), N,N'-diphenyl-N,N'-di(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine (abbreviated as TPD, CAS No. 65181-78-4), N,N'-bis[4-(diphenylamino)phenyl]-N,N'-diphenylbenzidine (CAS No. 209980-53-0), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-9,9-spirobifluorene-2,7-diamine (abbreviated as Spiro-TPD, CAS No. 1033035-83-4), N2,N7-di-1-naphthyl-N2,N7-diphenyl-9,9'-spirobi[9H-fluorene]-2,7-diamine (CAS No. 932739-76-9), poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (abbreviated as PTTA, CAS No. 1333317-99-9), 2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (abbreviated as Spiro-omeTAD, CAS No. 207739-72-8), N,N,N',N'-tetraarylbenzidine (CAS No. 15546-43-7), 4,4',4"-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (CAS No. 124729-98-2), N,N'-diphenyl-N,N'-di-[4-(N,N-diphenylamino)phenyl]benzidine (CAS No. 167218-46-4), poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (CAS No. 138184-36-8), and poly[2-methoxy-5-[(3,7-dimethyloctyloxy)-1,4-phenylene]-1,2-ethenediyl] (CAS No. 177716-59-5).

[0067] The third inorganic material, for example, includes one or more of graphene, C60, nickel oxide, molybdenum oxide, tungsten oxide, vanadium oxide, P-type gallium nitride, chromium oxide, copper oxide, hafnium oxide, copper sulfide, molybdenum sulfide, and tungsten sulfide. The fourth inorganic material, for example, includes one or more doped second compounds, a host compound of the doped second compound including graphene, C60, nickel oxide, molybdenum oxide, tungsten oxide, vanadium oxide, P-type gallium nitride, chromium oxide, copper oxide, hafnium oxide, copper sulfide, molybdenum sulfide, or tungsten sulfide, a dopant element of the doped second compound selected from one or more of boron, nickel, molybdenum, tungsten, vanadium, chromium, copper, and platinum group metal elements, and a proportion of a molar amount of the dopant element to a total molar amount of the doped second compound being less than or equal to 50%.

[0068] In some embodiments of the present application, the materials of the anode layer and the cathode layer are independently selected from one or more of a metal, a carbon material, a metal oxide, a metal fluoride, a metal carbonate, and a metal sulfide, wherein the metal includes but is not limited to one or more of Al, Ag, Cu, Mo, Au, Ba, Pt, Ca, Ir, Ni, and Mg, the carbon material includes but is not limited to one or more of graphite, carbon nanotube, graphene, and carbon fiber, the metal oxide includes but is not limited to one or more of indium tin oxide (ITO), fluorine-doped tin oxide (FTO), antimony tin oxide (ATO), aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), indium-doped zinc oxide (IZO), magnesium-doped zinc oxide (MZO), Ti02, Sn02, ZnO, and In203, the metal fluoride includes but is not limited to one or more of LiF, BaF2, and CsF, the metal carbonate includes but is not limited to CaC03, and the metal sulfide includes but is not limited to ZnS.

[0069] The anode layer and the cathode layer can also be composite electrodes, which can be a double-layer structure or have a sandwich-like structure, and the material of each layer of the composite electrode is independently selected from one or more of a metal, a carbon material, a metal oxide, a metal fluoride, a metal carbonate, and a metal sulfide. The double-layer structure of the composite electrode includes but is not limited to Ca / Al, LiF / Ca, LiF / Al, BaF2 / Al, CsF / Al, or CaC03 / Al, and the sandwich-like structure of the composite electrode includes but is not limited to one or more of BaF2 / Ca / Al, AZO / Ag / AZO, AZO / Al / AZO, ITO / Ag / ITO, ITO / Al / ITO, ZnO / Ag / ZnO, ZnO / Al / ZnO, Ti02 / Ag / Ti02, Ti02 / Al / Ti02, ZnS / Ag / ZnS, ZnS / Al / ZnS, Ti02 / Ag / Ti02, and Ti02 / Al / Ti02, and the thickness of the intermediate layer is not more than 35 nm. The thickness of the anode layer in the X direction can be, for example, 100 nm to 150 nm, and the thickness of the cathode layer in the X direction can be, for example, 100 nm to 150 nm.

[0070] It should be noted that the preparation method of each layer in the light-emitting functional layer can be prepared by inkjet printing. Inkjet printing can be performed along the X direction, for example, ink is printed to the virtual pixel unit 1042 and the pixel unit 105 respectively. Based on the virtual pixel unit 1042 being spaced apart from the second opening 1041 or the virtual pixel unit 1042 being communicated with the second opening 1041 through the first channel 1043, the film layer shrinkage effect caused by the rapid evaporation of the solvent in the virtual pixel unit 1042 can be avoided, which can avoid the adverse effect of the film layer shrinkage effect on the film forming quality in the second opening 1041, improve the film forming quality of the light-emitting functional layer, and improve the light-emitting uniformity of the display panel 10. In fact, in the display panel 10, the virtual pixel unit 1042 also has a light-emitting functional layer formed by inkjet printing. However, the light-emitting functional layer in the virtual pixel unit 1042 is insulated from the driving circuit layer 1012, so the light-emitting functional layer in the virtual pixel unit 1042 will not emit light. Even if the thickness uniformity of the light-emitting functional layer in the virtual pixel unit 1042 is poor, it will not affect the display effect of the display panel 10.

[0071] It can be understood that the display panel 10 can also include some conventional structures, for example, the display panel 10 further includes an encapsulation layer covering the light-emitting functional layer, the hydrophilic pixel definition layer 103 and the hydrophobic pixel definition layer 104. The encapsulation layer can be a thin film encapsulation (TFE) structure. For another example, the display panel 10 further includes a touch layer disposed on the encapsulation layer. For another example, the display panel 10 further includes a light extraction layer on the touch layer. The light extraction layer is used to improve the light extraction efficiency.

[0072] The application further provides an electronic device, which comprises a power supply component and the display panel as described above, and the power supply component is electrically connected with the display panel. The electronic device can be any electronic product with display function, such as smartphone, tablet personal computer, mobile phone, video phone, e-book reader, laptop PC, netbook computer, workstation, server, personal digital assistant, portable multimedia player, MP3 player, mobile medical machine, camera, game machine, digital camera, car navigation, electronic billboard, automatic teller machine, smart bracelet, smart watch, virtual reality (VR) device or wearable device.

[0073] The display panel and the electronic device provided by the embodiments of the application are described in detail above. The principles and implementation manners of the application are described by using specific examples in this paper, and the above description of the embodiments is only used to help understand the technical solutions of the application and the core ideas thereof; it should be understood by those skilled in the art that the technical solutions recorded in the above embodiments can be modified or some technical features thereof can be replaced by equivalents; and the modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A display panel, characterized by, The display panel comprises a plurality of pixel units and a plurality of virtual pixel units, the plurality of pixel units are arranged in an array; the pixel units and the virtual pixel units are arranged at intervals, or the virtual pixel units and the pixel units are connected through a first channel, and the width of the first channel in the X direction is less than the width of the virtual pixel unit in the X direction and the width of the pixel unit in the X direction.

2. The display panel of claim 1, wherein, The plurality of virtual pixel units are arranged at intervals along the X direction.

3. The display panel of claim 2, wherein, Each virtual pixel unit comprises a plurality of virtual sub-pixel units arranged at intervals along the Y direction. In each virtual pixel unit, the virtual sub-pixel unit closest to the pixel unit is arranged at an interval with the pixel unit or is connected through the first channel.

4. The display panel of claim 3, wherein, At least two virtual sub-pixel units in each virtual pixel unit are connected through a second channel. The width of the second channel in the X direction is less than the width of the virtual sub-pixel unit in the X direction.

5. The display panel according to any one of claims 1 to 4, characterized in that, The display panel comprises: An array substrate; A first electrode layer arranged on the array substrate, the first electrode layer comprises a plurality of first electrodes arranged in an array; in the X direction, any two adjacent first electrodes have a first gap; in the Y direction, any two adjacent first electrodes have a second gap; A hydrophilic pixel definition layer arranged on the array substrate, the hydrophilic pixel definition layer covers the second gap between any two adjacent first electrodes; the hydrophilic pixel definition layer has a plurality of first openings arranged at intervals along the Y direction, the plurality of first openings are arranged one-to-one with the plurality of first electrodes, and the forward projection of the first opening on the array substrate at least partially overlaps with the forward projection of the corresponding first electrode on the array substrate; and A hydrophobic pixel definition layer arranged on the array substrate, and the hydrophobic pixel definition layer is located on the side of the hydrophilic pixel definition layer away from the array substrate, the hydrophobic pixel definition layer covers the first gap between any two adjacent first electrodes; the hydrophobic pixel definition layer has a plurality of second openings arranged at intervals along the X direction, each first opening is partially exposed to the second opening to form the pixel unit; Wherein, a plurality of virtual pixel units are arranged at intervals along the X direction on the hydrophobic pixel definition layer, and each virtual pixel unit is arranged corresponding to a second opening.

6. The display panel of claim 5, wherein, The first channel is located in the hydrophobic pixel definition layer; the hydrophilic pixel definition layer comprises a plurality of protruding structures arranged at intervals along the Y direction, one protruding structure in the plurality of protruding structures is arranged corresponding to the first channel to be partially exposed to the first channel; Any two adjacent protruding structures form the first opening.

7. The display panel of claim 5, wherein, The first electrode layer further comprises a plurality of redundant electrodes arranged in an array, and the forward projection of each redundant electrode on the array substrate at least partially overlaps with the forward projection of the virtual pixel unit on the array substrate. In the X direction, any two adjacent redundant electrodes have a third gap therebetween, and the hydrophobic pixel definition layer covers the third gap between any two adjacent redundant electrodes; in the Y direction, any two adjacent redundant electrodes have a fourth gap therebetween, and the hydrophilic pixel definition layer covers the fourth gap between any two adjacent redundant electrodes.

8. The display panel of claim 5, wherein, Having at least one of the following technical features: (1) The array substrate comprises a drive circuit layer, and the first electrode is electrically connected with the drive circuit layer; (2) The display panel further comprises a light-emitting functional layer arranged at the pixel unit.

9. The display panel of claim 8, wherein, The light-emitting functional layer comprises a hole functional layer, a light-emitting layer, an electron functional layer and a second electrode layer which are sequentially stacked, the hole functional layer is closer to the first electrode layer than the second electrode layer, one of the first electrode layer and the second electrode layer is an anode layer, and the other is a cathode layer; Optionally, the hole functional layer comprises a hole injection layer and a hole transport layer which are stacked, the hole injection layer is closer to the anode layer than the hole transport layer; and / or, the electron functional layer comprises an electron injection layer and an electron transport layer which are stacked, the electron injection layer is closer to the cathode layer than the electron transport layer.

10. An electronic device, comprising: A display panel as claimed in any one of claims 1 to 9, and a power supply assembly electrically connected with the display panel.

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