CN114639712A

CN114639712A - Display panel, manufacturing method thereof and electronic equipment

Info

Publication number: CN114639712A
Application number: CN202210328679.1A
Authority: CN
Inventors: 吴守政
Original assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Current assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-06-17

Abstract

The technical scheme of the application discloses a display panel, a manufacturing method thereof and electronic equipment, wherein the display panel comprises: an array substrate; the pixel units are positioned on one side of the array substrate and comprise a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; a light emitting layer located between two driving electrodes adjacent in a first direction; the first direction is parallel to the plane of the array substrate; in the same pixel unit, two sub-pixels adjacent in the first direction share one driving electrode. This application technical scheme sets up two drive electrodes of subpixel and sets up relatively on the first direction that is on a parallel with array substrate, has the luminescent layer between two drive electrodes, and the subpixel can be at the direction of perpendicular to array substrate outgoing light to reduced the influence of interface to light luminous efficiency between each layer structure among the subpixel, improved luminous efficiency.

Description

Display panel, manufacturing method thereof and electronic equipment

Technical Field

The present disclosure relates to the field of electronic devices, and more particularly, to a display panel, a manufacturing method thereof, and an electronic device.

Background

With the continuous development of science and technology, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present. The main component of the electronic device that implements the display function is the display panel.

An OLED (organic light emitting diode) display panel is one of mainstream display panels currently employed in electronic devices. In a conventional OLED display panel, a sub-pixel is an OLED light emitting element, each layer of structure in the OLED light emitting element is sequentially stacked in a direction perpendicular to a substrate, light is emitted along a stacking direction, an exit path of the light needs to pass through interfaces between a plurality of different film layers, and the light emitting efficiency is affected by the interfaces of the film layers.

Disclosure of Invention

In view of this, the present application provides a display panel, a method for manufacturing the same, and an electronic device, and the scheme is as follows:

a display panel, comprising:

an array substrate;

the pixel units are positioned on one side of the array substrate and comprise a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; a light emitting layer located between two driving electrodes adjacent in a first direction;

the first direction is parallel to the plane of the array substrate;

in the same pixel unit, two sub-pixels adjacent in the first direction share one driving electrode.

The technical scheme of the present application further provides a manufacturing method of the display panel, including:

providing an array substrate;

forming a plurality of pixel units on the array substrate, wherein each pixel unit comprises a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; a light emitting layer located between two driving electrodes adjacent in a first direction;

wherein, the first direction is parallel to the array substrate; in the same pixel unit, two sub-pixels adjacent in the first direction share the same drive electrode.

The technical scheme of the application also provides an electronic device which comprises the display panel.

As can be seen from the above description, in the display panel, the manufacturing method thereof and the electronic device provided in the technical scheme of the application, the two driving electrodes for setting the sub-pixel are oppositely arranged in the first direction parallel to the array substrate, the light emitting layer is arranged between the two driving electrodes, and the sub-pixel can emit light in the direction perpendicular to the array substrate, so that the influence of the interface between the structures of each layer in the sub-pixel on the light emitting efficiency is reduced, and the light emitting efficiency is improved. In addition, since the sub-pixels adjacent to each other in the first direction share one driving electrode, two sub-pixels adjacent to each other in the first direction can share the same electric signal for light emitting display and/or the same driving electrode can be provided between two sub-pixels adjacent to each other in the first direction.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings used in the description of the embodiments or prior arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

The structures, the proportions, the sizes, and the like shown in the drawings are only used for matching the disclosure disclosed in the specification, so that those skilled in the art can understand and read the disclosure, and do not limit the conditions and conditions for implementing the present application, so that the present disclosure has no technical essence, and any structural modifications, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the disclosure which can be covered by the disclosure in the present application without affecting the efficacy and the achievable purpose of the present application.

FIG. 1 is a schematic structural diagram of a conventional OLED display panel;

fig. 2 is a top view of a display panel according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a sub-pixel according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of another sub-pixel provided in the present application;

fig. 5 is a top view of a plurality of sub-pixels sequentially arranged in a first direction in a pixel unit according to an embodiment of the present disclosure;

fig. 6 is a top view of a pixel unit according to an embodiment of the present disclosure;

fig. 7 is a top view of another pixel unit according to an embodiment of the present disclosure;

fig. 8 is a top view of another pixel unit according to an embodiment of the present disclosure;

fig. 9 is a top view of another pixel unit according to an embodiment of the present disclosure;

FIG. 10 is a cross-sectional view of a sub-pixel unit in a pixel unit according to an embodiment of the present disclosure;

fig. 11 is a top view of another pixel unit according to an embodiment of the present disclosure;

fig. 12 is a top view of another pixel unit according to an embodiment of the present disclosure;

fig. 13 is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present disclosure;

fig. 14-18 are process flow diagrams of a method for manufacturing a display panel according to an embodiment of the present disclosure;

fig. 19-24 are process flow diagrams of another method for fabricating a display panel according to an embodiment of the present disclosure;

fig. 25 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown, and in which it is to be understood that the embodiments described are merely illustrative of some, but not all, of the embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a conventional OLED display panel, which includes: a glass substrate 11 and an OLED light emitting element disposed on the glass substrate.

The OLED light emitting element includes:

a first electrode 12, a light-emitting layer 14, and a second electrode 13 laminated in this order in a direction perpendicular to the glass substrate 11;

the first electrode 12 is a transparent electrode, and may be an ITO electrode, which enables light emitted from the light emitting layer 14 to be emitted through the glass substrate 11, and the second electrode 13 is a metal layer, which can reflect light, so as to improve the light emitting efficiency of light passing through the glass substrate 11.

In order to improve light extraction efficiency, a hole transport layer 15 and a hole injection layer (not shown in fig. 1) are provided between the first electrode 12 and the light-emitting layer 14, the hole injection layer being located between the first electrode 12 and the hole transport layer 15; an electron transport layer 16 and an electron injection layer (not shown in fig. 1) are disposed between the second electrodes 13, and the electron injection layer is located between the electron transport layer 16 and the second electrodes 13.

In fig. 1, all the layers of the OLED light-emitting device are stacked in sequence in a direction perpendicular to the glass substrate 11, light is transmitted as indicated by a dotted arrow in fig. 1, light exits along the stacking direction, the light-exiting efficiency is affected by the interfaces between the layers of the OLED light-emitting device, there is a large reflection of light between the interfaces, even though the internal quantum efficiency can theoretically reach 100% in the case of a phosphorescent OLED, but the efficiency of coupling photons into the external space in the light-emitting layer 14 is generally less than 20% under the blocking of one layer of the interfaces. Therefore, how to optimize the structure of the OLED light-emitting element and improve the coupling light-emitting efficiency is an urgent problem to be solved in the OLED display panel.

In order to solve the above problems, the present application provides a display panel, a manufacturing method thereof, and an electronic device, where two driving electrodes of a subpixel of the display panel are oppositely disposed in a first direction parallel to an array substrate, and a light emitting layer is disposed between the two driving electrodes to convert a planar subpixel structure into a three-dimensional structure, and the subpixel can emit light in a direction perpendicular to the array substrate, so as to reduce reflection and absorption of light between different film interfaces in a light emitting direction, thereby reducing influence of interfaces between layers of structures in the subpixel on light emitting efficiency, and improving light emitting efficiency. And because the light-emitting efficiency is improved, the power consumption can be reduced under the same light-emitting brightness. In addition, since the sub-pixels adjacent to each other in the first direction share the driving electrode, the two sub-pixels adjacent to each other in the first direction can be connected to the same connecting electrode through the shared driving electrode to perform display driving.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 2 to 5, fig. 2 is a top view of a display panel according to an embodiment of the present disclosure, fig. 3 is a cross-sectional view of a sub-pixel according to an embodiment of the present disclosure, fig. 4 is a cross-sectional view of another sub-pixel according to an embodiment of the present disclosure, fig. 5 is a top view of a plurality of sub-pixels sequentially arranged in a first direction in a pixel unit according to an embodiment of the present disclosure, and the display panel includes:

an array substrate 21;

a plurality of pixel units 22 located at one side of the array substrate 21, the pixel units 22 including a plurality of sub-pixels 220; the sub-pixel 220 includes: two drive electrodes 31 opposed in the first direction X; a light-emitting layer 32 located between two drive electrodes 31 adjacent in the first direction;

the first direction X is parallel to the plane of the array substrate 21; in the same pixel unit 22, two sub-pixels 220 adjacent in the first direction X share the drive electrode 31.

In the display panel provided in the embodiment of the application, the two driving electrodes 31 provided with the sub-pixel 220 are oppositely arranged in the first direction X parallel to the array substrate 21, the light emitting layer 32 is provided between the two driving electrodes 31, the planar sub-pixel structure is converted into a three-dimensional structure, the sub-pixel 220 can emit light in the direction perpendicular to the array substrate 21, even though the totally reflected light which cannot be separated from the microcavity structure between the layers in the conventional planar structure can be emitted, and the light emitting efficiency is improved.

And moreover, the light passing through the interfaces of different film layers is reduced, and the reflection and absorption of the light between the interfaces of different film layers in the light emitting direction are reduced, so that the influence of the interfaces between the structures in each layer in the sub-pixel 220 on the light emitting efficiency is reduced, and the light emitting efficiency is improved. Due to the fact that the light emitting efficiency is improved, under the condition of the same light emitting brightness, power consumption can be reduced.

In addition, since the sub-pixels 220 adjacent to each other in the first direction X share the driving electrode 31, two sub-pixels 220 adjacent to each other in the first direction X can share the same electric signal for light emission display and/or have the same driving electrode therebetween.

For the same sub-pixel 220, one of the two driving electrodes 31 may be an anode of the sub-pixel 220, and the other driving electrode may be a cathode of the sub-pixel 220, and different electrical signals are respectively input to control the light-emitting layer 32 to emit light.

Taking an OLED display panel as an example, the sub-pixel 220 is an OLED light emitting element, and in order to improve light extraction efficiency, as shown in fig. 3, the sub-pixel 220 further includes an Electron Transport Layer (ETL)33 located between a driving electrode 31 and a light emitting layer 32, and an Electron Injection Layer (EIL) may be further disposed between the electron transport layer 33 and the driving electrode 31; the sub-pixel 220 further comprises a Hole Transport Layer (HTL)34 between the further drive electrode 31 and the light-emitting layer 32, and a Hole Injection Layer (HIL) may be further arranged between the hole transport layer 34 and the drive electrode. The electron injection layer and the hole injection layer are not shown in fig. 3 and 4.

It should be noted that, for convenience of illustration, only the two driving electrodes 31 of the sub-pixel 220 and the light-emitting layer between the two driving electrodes 31 are shown in fig. 5, and the electron injection layer, the electron transport layer, the hole injection layer, and the hole transport layer are not shown.

In the embodiment of the present application, an OLED display panel is taken as an example for explanation, obviously, the implementation manner of the display panel is not limited to the OLED display panel using an OLED light emitting element as a sub-pixel, but may also be an LED display panel using an LED light emitting element as a sub-pixel, or a QLED display panel using a QLED light emitting element as a sub-pixel, and the light emitting elements of the LED display panel and the QLED display panel, which are used as sub-pixels, may be implemented by two electrodes and a light emitting layer located between the two electrodes, and may also adopt the stereoscopic sub-pixel structure provided in the technical solution of the present application.

In the embodiment of the present application, one implementation manner of two sub-pixels 220 adjacent to each other in the first direction X in the same pixel unit 22 and sharing one driving electrode 31 includes: the display panel has a comb-teeth electrode including a connection electrode and a plurality of driving electrodes 31 connected to the connection electrode, the driving electrodes 31 are comb-teeth structures of the comb-teeth electrode, and two sub-pixels 220 adjacent to each other in the first direction X may use the same comb-teeth structure as the driving electrodes 31 common to the two sub-pixels 220, in which case the two sub-pixels 220 need three driving electrodes 31 in total, or the two sub-pixels have two driving electrodes respectively, in which case the two sub-pixels need four driving electrodes 31 in total. The implementation of the comb-teeth electrodes includes, but is not limited to, the manner described in fig. 5-9 and 11 in the embodiments described below. .

The array substrate 21 is provided with a support structure 23, and the support structure 23 does not overlap with the sub-pixel 220 in a direction perpendicular to a plane of the array substrate 21. The support structure 23 is used for carrying an encapsulation layer when surface-encapsulating the display panel. The supporting structure 23 can also be used to prevent crosstalk of light emitted from the sub-pixels 220 with different emission colors, and is used to make the driving electrodes 31 have a set inclination angle with respect to the array substrate 21, so that the distance between two driving electrodes 31 in the same sub-pixel 220 is wide at the top and narrow at the bottom, thereby improving light emitting efficiency, and also improving the overall mechanical strength of the display panel. The support structure 23 may be made by a photoresist layer.

As shown in fig. 3, in the display panel provided in the embodiment of the present application, the array substrate 21 includes: the base 211 and the reflective structure 212 located on a side of the base 211 facing the pixel unit 22, the reflective structure 212 at least partially overlaps the pixel unit 22 along a direction perpendicular to a plane of the array substrate 21. By providing the reflective structure 212, light incident on the substrate 211 can be reflected, and light emitting efficiency can be improved. The substrate 211 may be made of transparent insulating material such as glass, PI, or PET.

In the embodiment of the present invention, in the same pixel unit 22, all the sub-pixels 220 may adopt the same reflective structure 212, or each sub-pixel 220 individually corresponds to one reflective structure 212. The vertical projection of the light emitting layer 32 on the substrate 211 is located within the vertical projection of the corresponding one of the reflective structures 212 on the substrate 211 to achieve a better reflective effect.

As shown in fig. 4, in order to improve the reflection performance of the reflection structure 212, the distance from the reflection surface to the substrate 211 gradually decreases from the middle to the edge region of the reflection surface, so that the reflection surface of the reflection structure 212 is equivalent to a convex reflection surface protruding toward the pixel unit 22, thereby improving the reflection performance. The metal layer may be etched to form the reflective structure 212 with a gradually changing thickness by a gray scale etching method.

The reflection structure 212 is matched with the inclined angle design of the two driving electrodes 31 relative to the array substrate 21 in the same sub-pixel 220, so that the light emitted by the light emitting layer 32 can be further reflected out, and the light emitting efficiency is improved.

The side of the substrate 211 facing the pixel unit 22 has multiple metal layers for preparing the routing of the pixel circuit and the electrode of the thin film transistor in the array substrate 21. The metal layer includes one or more of Al, Ag, and Ti. Wherein one metal layer includes a reflective structure 212. In order to insulate the reflective structure 212 from the driving electrode 31 in the sub-pixel 220, an insulating layer 213 is further disposed between the pixel unit 22 and the reflective structure 212, and the insulating layer 213 can also planarize the surface of the array substrate 21 to facilitate the fabrication of the pixel unit 22.

The substrate 211 has at least a first metal layer on a side facing the pixel unit 22, and the first metal layer includes a signal line and a reflective structure 212. The array substrate 21 includes a pixel circuit for driving the sub-pixel 220 to perform light emitting display, and the signal line is connected to the pixel circuit and is used for providing a preset voltage signal to the pixel circuit to drive the sub-pixel 220 to perform light emitting display. Since the signal line is generally made of materials such as Ti/Al/Ti with high conductivity and high reflectivity, the reflective structure 212 can be prepared by utilizing the first metal layer for preparing the signal line, and the reflective structure 212 does not need to be prepared by a separate metal layer, so that the thickness of the panel is reduced. The reflection structure 212 with the required graph structure is formed while the signal line is formed by patterning the first metal layer, the reflection structure 212 can be prepared while the signal line is prepared by adopting the existing preparation method, and the preparation method has the advantages of good compatibility with the existing preparation process, simple preparation process and low preparation cost.

As shown in fig. 5, the two driving electrodes 31 of the sub-pixel 220 are respectively a first electrode 311 and a second electrode 312 which are opposite; the same pixel unit 22 includes at least two sub-pixels 220 having the same emission color, the first electrodes 311 of the sub-pixels 220 having the same emission color are electrically connected to the first connection electrodes 41, the second electrodes 312 of the sub-pixels 220 having the same emission color are electrically connected to the second connection electrodes 42, and the first connection electrodes 41 and the second connection electrodes 42 are respectively connected to different electrical signals. In this way, in the same pixel unit 22, the sub-pixels 220 of the same color can simultaneously perform light emission control through the first and

second connection electrodes

41 and 42.

In the same pixel unit 22, the sub-pixels 220 of each light-emitting color may be individually arranged corresponding to one sub-pixel group, and different sub-pixel groups are sequentially arranged in the second direction Y; alternatively, in the same pixel unit 22, the sub-pixels 220 with different light-emitting colors are sequentially arranged in the first direction X.

In the embodiment of the present application, the pixel unit 22 may include a sub-pixel group, as shown in fig. 5, which shows a sub-pixel group, the sub-pixel group includes a plurality of sub-pixels 220 sequentially arranged along the first direction X, and in the same sub-pixel group, the light emitting colors of the sub-pixels 220 are the same. The arrangement of the respective layer structures in the sub-pixel 220 stacked in the first direction X parallel to the array substrate 21 results in a smaller size of the sub-pixel 220 in the direction perpendicular to the array substrate 21. The actual light-emitting display area of the sub-pixel 220 of the same emission color is increased by arranging the sub-pixel group in which the pixel unit 22 includes a plurality of sub-pixels 220 of the same emission color.

As shown in fig. 6, fig. 6 is a top view of a pixel unit provided in this embodiment of the present application, a sub-pixel group of the pixel unit 22 includes a first sub-pixel group P1 and a second sub-pixel group P2, and a light emitting color of a sub-pixel 220 of the first sub-pixel group P1 is different from a light emitting color of a sub-pixel 220 of the second sub-pixel group P2; the first sub-pixel group P1 and the second sub-pixel group P2 are arranged along a second direction Y, which intersects the first direction X and is parallel to the plane of the array substrate 21. In the display panel, the sub-pixels 220 with different emission colors all have corresponding sub-pixel groups, which not only can increase the actual emission display area of the sub-pixels 220 with the same emission color and improve the macroscopic display effect, but also can simultaneously control the emission display of a plurality of sub-pixels 220 with the same color in the same sub-pixel group through two corresponding connecting electrodes.

In the first sub-pixel group P1, the first electrodes 311 of the sub-pixels 220 are all connected to the first connection electrode 41, and the second electrodes 312 of the sub-pixels 220 are all connected to the second connection electrode 42; in the second sub-pixel group P2, one of the first electrode 311 and the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42, and the other of the first electrode 311 and the second electrode 312 of the sub-pixel 220 is connected to the third connection electrode 43. Thus, the two sub-pixel groups can be display-controlled by the three connection electrodes.

In the manner shown in fig. 6, in the first sub-pixel group P1, the first electrodes 311 of the sub-pixels 220 are all connected to the first connection electrode 41, and the second electrodes 312 of the sub-pixels 220 are all connected to the second connection electrode 42; in the second sub-pixel group P2, the first electrode 311 of the sub-pixel 220 is connected to the second connection electrode 42, and the second electrode 312 of the sub-pixel 220 is connected to the third connection electrode 43. In this manner, the two sub-pixel groups can be controlled for display by the three connection electrodes.

Referring to fig. 7, fig. 7 is a top view of another pixel unit according to an embodiment of the present disclosure, in this manner, in the first sub-pixel group P1, the first electrodes 311 of the sub-pixels 220 are connected to the first connecting electrodes 41, and the second electrodes 312 of the sub-pixels 220 are connected to the second connecting electrodes 42; in the second sub-pixel group P2, the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42, and the first electrode 311 of the sub-pixel 220 is connected to the third connection electrode 43. In this manner, the two sub-pixel groups can be display-controlled by the three connection electrodes.

In the embodiment of the present application, as shown in fig. 6 and 7, the display unit 22 further includes a third sub-pixel group P3. In the second direction Y, the first sub-pixel group P1, the second sub-pixel group P2, and the third sub-pixel group P3 are sequentially arranged. In the third sub-pixel group P3, one of the first electrode 311 and the second electrode 312 of the sub-pixel 220 is connected to the third connecting electrode 43, and the other of the first electrode 311 and the second electrode 312 of the sub-pixel 220 is connected to the fourth connecting electrode 44. At this time, the three pixel groups can perform display control by four connection electrodes.

In the manner shown in fig. 6 and 7, for the third sub-pixel group P3, the first electrode 31 of the sub-pixel 220 is connected to the third connection electrode 43, and the second electrode 312 of the sub-pixel 220 is connected to the fourth connection electrode 44. Obviously, in another embodiment, in the third sub-pixel group P3, the second electrode 312 of the sub-pixel 220 is connected to the third connecting electrode 43, and the first electrode 311 of the sub-pixel 220 is connected to the fourth connecting electrode 44.

The sub-pixels 220 in the first sub-pixel group P1 are all red sub-pixels R emitting red light R, the sub-pixels 220 in the second sub-pixel group P2 are all green sub-pixels G emitting green light G, and the sub-pixels 220 in the third sub-pixel group P3 are all blue sub-pixels B emitting blue light B.

In the mode shown in fig. 6, when the red sub-pixel r is turned on, the first connection electrode 41 is inputted with a high level, and the second connection electrode 42 is inputted with a low level; the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a low level; when the green sub-pixel g is turned on, the first connection electrode 41 inputs a low level, the second connection electrode 42 inputs a high level, the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a low level; when the blue sub-pixel b is turned on, the first connection electrode 41 is inputted with a low level, the second connection electrode 42 is inputted with a low level, the third connection electrode 43 is inputted with a high level, and the fourth connection electrode 44 is inputted with a low level; since the common electrode signal is in a switching state, the sub-pixels 220 of three different light-emitting colors cannot be simultaneously lighted.

In the manner shown in fig. 7, the second connection electrode 42 may be a common cathode of the adjacent sub-pixel 220 in the second direction Y, and the third connection electrode 43 may be a common anode of the adjacent sub-pixel 220 in the second direction Y. When the red sub-pixel r is turned on, the first connection electrode 41 inputs a high level, and the second connection electrode 42 inputs a low level; the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a low level; when the green sub-pixel g is turned on, the first connection electrode 41 inputs a low level, and the second connection electrode 42 inputs a low level; the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a high level; when the blue sub-pixel b is turned on, the first connection electrode 41 inputs a low level, the second connection electrode 42 inputs a high level, the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a low level; when the red sub-pixel r and the green sub-pixel g are simultaneously bright, the first connection electrode 41 inputs a high level, the second connection electrode 42 inputs a low level, the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a high level; when the green sub-pixel g and the blue sub-pixel b are simultaneously turned on, the first connection electrode 41 inputs a low level, the second connection electrode 42 inputs a low level, the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a low level; when the red sub-pixel r, the green sub-pixel g, and the blue sub-pixel b are simultaneously turned on, the first connection electrode 41 is inputted with a high level, the second connection electrode 42 is inputted with a low level, the third connection electrode 43 is inputted with a high level, and the fourth connection electrode 44 is inputted with a low level.

In the embodiment shown in fig. 7, the common anode and the common cathode may be oppositely arranged, and the anode and the cathode may be set according to the actual carrier transport path.

In the connection layout schemes of the driving electrodes 31 and the connection electrodes shown in fig. 5 to 7, the connection electrodes and the driving electrodes 31 may be disposed on the same metal layer, and if the same metal layer is used for etching, the connection electrodes and the driving electrodes 31 may be simultaneously prepared, and the corresponding connection between the connection electrodes and the driving electrodes 31 is realized, so that the manufacturing process is simple.

Referring to fig. 8, fig. 8 is a top view of another pixel unit provided in the present embodiment, in this manner, in the first sub-pixel group P1, the first electrode 311 of the sub-pixel 220 is connected to the first connection electrode 41, and the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42; in the second sub-pixel group P2, the second electrode 312 of the sub-pixel 220 is connected to the third connection electrode 43; in the second direction Y, the first electrodes 311 of two adjacent sub-pixels 220 are the same electrode. In this manner, the same first electrode 311 is used for the sub-pixels 220 adjacent to each other in the second direction Y in different sub-pixel groups, so that the sub-pixels 220 in different sub-pixel groups can provide the first electrode 311 with electric signals through the first connecting electrode 41.

Further, the pixel unit 22 further includes a third sub-pixel group P3; in the same pixel unit 22, the sub-pixels 220 in different sub-pixel groups have different light emission colors, and the first sub-pixel group P1, the second sub-pixel group P2 and the third sub-pixel group P3 are sequentially arranged in the second direction X; in the third subpixel group P3, the second electrode 312 of the subpixel 220 is connected to the fourth connecting electrode 44; in the second direction Y, the first electrodes 311 of the three sub-pixels 220 arranged in series are the same electrode. In this manner, the same first electrode 311 is used for the three sub-pixels 220 arranged in the second direction Y in the first to third sub-pixel groups P1 to P3, so that the sub-pixels 220 in the three different sub-pixel groups can all supply the electric signals to the first electrode 311 through the first connection electrode 41.

In the mode shown in fig. 8, when the red sub-pixel r is turned on, the first connection electrode 41 inputs a high level, and the second connection electrode 42 inputs a low level; the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a high level; when the green sub-pixel g is turned on, the first connection electrode 41 inputs a high level, the second connection electrode 42 inputs a high level, the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a high level; when the blue sub-pixel b is turned on, the first connection electrode 41 is inputted with a high level, the second connection electrode 42 is inputted with a high level, the third connection electrode 43 is inputted with a high level, and the fourth connection electrode 44 is inputted with a low level. In this manner, the connection manner of the connection electrodes can simultaneously light up the sub-pixels 220 of three different light emission colors.

In the embodiment of the present application, the connection electrode is located below the driving electrode 31, so that the driving electrode 31 can be connected to the corresponding connection electrode through the via hole. When there are a plurality of sub-pixel groups sequentially arranged in the second direction Y, each sub-pixel group is disposed between two adjacent connection electrodes in the second direction Y, so that the driving electrode 31 is connected to the corresponding connection electrode, and the distance between two adjacent sub-pixel groups in the second direction Y is reduced.

In the embodiment shown in fig. 8, in order to avoid short-circuiting the first electrode 311 with the second and

third connection electrodes

42 and 43 that intersect each other, the second and

third connection electrodes

42 and 43 are disposed below the metal layer where the driving electrode 31 is located, that is, between the substrate 211 and the driving electrode 31. At this time, the second and

third connection electrodes

42 and 43 may be prepared by multiplexing the metal layers in the array substrate 21. The second connection electrode 42 and the third connection electrode 43 are connected to the corresponding second electrodes 312 Via vias Via. The first connecting electrode 41, the fourth connecting electrode 44 and the driving electrode 31 are arranged on the same layer of metal, so that synchronous etching preparation can be realized, the manufacturing process is simplified, and the manufacturing cost is reduced.

In the embodiment of the present application, as shown in fig. 9, in the first sub-pixel group P1, the first electrode 311 of the sub-pixel 220 is connected to the first connection electrode 41, and the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42; in the second sub-pixel group P2, one of the first electrode 311 and the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42, and in this way, the two sub-pixel groups can perform display control by three connection electrodes.

Further, the pixel unit further includes a third sub-pixel group P3; in the same pixel unit 22, the sub-pixels 220 in different sub-pixel groups emit light of different colors, and the first sub-pixel group P1, the second sub-pixel group P2, and the third sub-pixel group P3 are sequentially arranged in the second direction Y. In this case, an embodiment is shown in fig. 9.

Referring to fig. 9, fig. 9 is a top view of another pixel unit provided in the embodiment of the present application, in this way, for the first sub-pixel group P1, the first electrode 311 of the sub-pixel 220 is connected to the first connection electrode 41, and the second electrode 312 of the sub-pixel 220 is connected to the second connection electrode 42. The second electrode 312 of the sub-pixel 220 in the second sub-pixel group P2 is connected to the second connection electrode 42. The first electrode 311 of the sub-pixel 220 in the second sub-pixel group P2 is the same as the first electrode 311 of the adjacent sub-pixel 220 in the third sub-pixel group P3. In the third subpixel group P3, the second electrode 312 of the subpixel 220 is connected to the third connecting electrode 43, and the first electrode 311 of the subpixel 220 is connected to the fourth connecting electrode 44. In this manner, the same first electrode 311 is used for the sub-pixels 220 adjacent to each other in the second direction Y in the second sub-pixel group P2 and the third sub-pixel group P3, and both the sub-pixels 220 in the second sub-pixel group P2 and the sub-pixels 220 in the third sub-pixel group P3 can supply an electric signal to the first electrode 311 through the fourth connection electrode 44.

In the manner shown in fig. 9, the second connection electrode 42 may be a common cathode of the adjacent sub-pixel 220 in the second direction Y, and the fourth connection electrode 44 may be a common anode of the adjacent sub-pixel 220 in the second direction Y. When the red sub-pixel r is turned on, the first connection electrode 41 inputs a high level, and the second connection electrode 42 inputs a low level; the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a low level; when the green sub-pixel g is turned on, the first connection electrode 41 inputs a low level, and the second connection electrode 42 inputs a low level; the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a high level; when the blue sub-pixel b is turned on, the first connection electrode 41 is inputted with a low level, the second connection electrode 42 is inputted with a low level, the third connection electrode 43 is inputted with a low level, and the fourth connection electrode 44 is inputted with a high level; when the red sub-pixel r and the green sub-pixel g are simultaneously bright, the first connection electrode 41 inputs a high level, the second connection electrode 42 inputs a low level, the third connection electrode 43 inputs a high level, and the fourth connection electrode 44 inputs a high level; when the green sub-pixel g and the blue sub-pixel b are simultaneously turned on, the first connection electrode 41 inputs a low level, the second connection electrode 42 inputs a low level, the third connection electrode 43 inputs a low level, and the fourth connection electrode 44 inputs a high level; when the red sub-pixel r, the green sub-pixel g, and the blue sub-pixel b are simultaneously turned on, the first connection electrode 41 is inputted with a high level, the second connection electrode 42 is inputted with a low level, the third connection electrode 43 is inputted with a low level, and the fourth connection electrode 44 is inputted with a high level.

In the embodiment shown in fig. 9, the common anode and the common cathode may be oppositely arranged, and the anode and the cathode may be set according to the actual carrier transport path.

In another embodiment, in the first subpixel group P1, the first electrode 311 of the subpixel 220 is connected to the first connection electrode 41, and the second electrode 312 of the subpixel 220 is connected to the second connection electrode 42. The first electrode 311 of the sub-pixel 220 in the second sub-pixel group P2 is connected to the second connection electrode 42. The second electrode 312 of the sub-pixel in the second sub-pixel group P2 is the same as the second electrode 312 of the adjacent sub-pixel 220 in the third sub-pixel group P3. In the third subpixel group P3, the first electrode 311 of the subpixel 220 is connected to the third connecting electrode 43, and the second electrode 312 of the subpixel 220 is connected to the fourth connecting electrode 44.

In the embodiment of the present application, the sub-pixels 220 in the first sub-pixel group P1, the second sub-pixel group P2 and the third sub-pixel group P3 may respectively correspond to one of the red sub-pixel r, the green sub-pixel g and the blue sub-pixel b, and the specific corresponding relationship is not limited.

In the embodiment of the present application, in the same pixel unit 22, the same driving electrode 31 is used for two sub-pixels 220 adjacent to each other in the first direction X, which can improve the concentration of the sub-pixels 220 and further improve the pixel area. Moreover, since the same driving electrode 31 is used for the two sub-pixels 220, the two driving electrodes 31 of the sub-pixels 220 do not have the same cathode and anode of the conventional OLED light-emitting device, the same driving electrode 31 shared by the two sub-pixels 220 can be input with high level or low level, and the lighting of the sub-pixels 220 of different colors in the same pixel unit 22 is realized by changing the high-low level property of the input electric signals of the two driving electrodes 31.

In the manner shown in fig. 9, in order to avoid short-circuiting the first electrode 311 with the crossing third connection electrode 43 in the second sub-pixel group P2 and the third sub-pixel group P3, the third connection electrode 43 is disposed below the metal layer where the driving electrode 31 is located, i.e., between the substrate 211 and the driving electrode 31. At this time, the third connection electrode 43 may be prepared by multiplexing the metal layers in the array substrate 21. The third connection electrode 43 is connected to the corresponding second electrode 312 Via the Via. The first connecting electrode 41, the second connecting electrode 42 and the fourth connecting electrode 44 are arranged on the same layer of metal as the driving electrode 31, so that synchronous etching preparation can be realized, the manufacturing process is simplified, and the manufacturing cost is reduced.

Referring to fig. 10, fig. 10 is a cross-sectional view of a sub-pixel unit in a pixel unit provided by an embodiment of the present application, where the pixel unit 22 includes at least one sub-pixel unit; the sub-pixel unit has a plurality of sub-pixels 220 which have different light emission colors and are sequentially arranged in the first direction X; in the same sub-pixel unit, two adjacent sub-pixels 220 have the same driving electrode 31. In this way, two sub-pixels 220 adjacent to each other in the first direction X may employ three driving electrodes 31 sequentially arranged in the first direction X, and compared to a mode in which each sub-pixel 220 individually employs two driving electrodes 31, one driving electrode may be reduced, and the display panel structure and the manufacturing process are simplified.

In the manner shown in fig. 10, one sub-pixel unit having three sub-pixels 220 is taken as an example. One sub-pixel 220 having the light emitting layer 32 capable of emitting red light R to form a red sub-pixel R, one sub-pixel 220 having the light emitting layer 32 capable of emitting green light G to form a green sub-pixel G, and one sub-pixel 220 having the light emitting layer 32 capable of emitting blue light B to form a green sub-pixel G may be provided.

Based on the manner shown in fig. 10, when the pixel unit 22 includes a plurality of sub-pixel units, the structure of the pixel unit may be as shown in fig. 11.

Referring to fig. 11, fig. 11 is a top view of another pixel unit provided in this embodiment, in this way, in the same sub-pixel unit, there are a first sub-pixel, a second sub-pixel and a third sub-pixel that are sequentially arranged in a first direction X. The first sub-pixel, the second sub-pixel and the third sub-pixel may be three different sub-pixels 220 emitting red light R, green light G and blue light B, respectively, and the specific correspondence relationship is not limited. The display panel has four connecting electrodes 40 sequentially arranged in the second direction Y, and the pixel unit 22 is located between two adjacent connecting electrodes 40; the second direction Y intersects the first direction X and is parallel to the plane of the array substrate 21. The driving electrode 31 of the first sub-pixel at the side departing from the second sub-pixel is connected with a corresponding connecting electrode 40; the driving electrode 31 between the first sub-pixel and the second sub-pixel is connected with a corresponding connecting electrode 40; the driving electrode 31 between the second sub-pixel and the third sub-pixel is connected with a corresponding connecting electrode 40; the driving electrode 31 of the third sub-pixel on the side facing away from the second sub-pixel is connected to a corresponding connection electrode 40. In this embodiment, all the sub-pixels 220 in the same pixel unit 22 are electrically connected to each other via four connection electrodes 40.

In fig. 11, taking the sub-pixel 220 with three emission colors in one sub-pixel unit as an example, four connecting electrodes 40 are needed. In the same pixel unit 22, a plurality of sub-pixel units are sequentially arranged in the first direction X. The pixel unit 22 is provided with two connecting electrodes 40 on two sides in the second direction Y, so as to avoid the wiring width of the connecting electrodes 40 when three or four connecting electrodes 40 are located on the same side of the pixel unit 22. Meanwhile, two connection electrodes 40 disposed on the same side of the pixel unit 22 are disposed on metal layers of different heights, so as to facilitate circuit connection of the driving electrode 31 and the connection electrodes 40.

Taking the sub-pixel 220 emitting the red light R as the first sub-pixel, the sub-pixel 220 emitting the green light G as the second sub-pixel, and the sub-pixel 220 emitting the blue light B as the third sub-pixel as an example, the four connecting electrodes 40 are disposed as the first connecting electrode 41, the second connecting electrode 42, the third connecting electrode 43, and the fourth connecting electrode 44 in this order in the second direction Y. The driving electrode 31 of the first sub-pixel on the side away from the second sub-pixel is connected with the second connecting electrode 42; the driving electrode 31 between the first sub-pixel and the second sub-pixel is connected with the third connecting electrode 43; the driving electrode 31 between the second sub-pixel and the third sub-pixel is connected with the fourth connecting electrode 44; the drive electrode 31 of the third sub-pixel at the side facing away from the second sub-pixel is connected to the first connection electrode 41.

In the manner shown in fig. 11, two adjacent sub-pixels 220 in the first direction X share the same driving electrode 31, three sub-pixels 220 with different colors of emitted light continuously arranged in the first direction X are used as a sub-pixel unit, and the sub-pixel units are used as an array unit to be arranged in an array manner to obtain a large pixel area.

In the mode shown in fig. 11, when the red subpixel r is turned on, the second connection electrode 42 inputs a high level, and the third connection electrode 43 inputs a low level; the fourth connection electrode 44 inputs a low level, and the first connection electrode 41 inputs a low level; when the green sub-pixel g is turned on, the second connection electrode 42 inputs a low level, and the third connection electrode 43 inputs a high level; the fourth connection electrode 44 inputs a low level, and the first connection electrode 41 inputs a low level; when the blue sub-pixel b is turned on, the second connection electrode 42 inputs a low level, the third connection electrode 43 inputs a low level, the fourth connection electrode 44 inputs a high level, and the first connection electrode 41 inputs a low level; since the red and blue sub-pixels r and b are simultaneously turned on, the second connection electrode 42 is inputted with a high level, the third connection electrode 43 is inputted with a low level, the fourth connection electrode 44 is inputted with a high level, and the first connection electrode 41 is inputted with a low level. Obviously, when the display panel includes a plurality of sub-pixel units, two pixel units 220 adjacent in the first direction X may also each have two independent driving electrodes 31.

The side of the array substrate 21 facing the pixel unit 22 has a support layer including a plurality of support structures 23; in a direction perpendicular to the plane (XY plane) of the array substrate 21, the support structure 23 surrounds at least one sub-pixel 220; the support structure 23 is used for carrying the encapsulation layer when surface-encapsulating the display panel. The supporting structure 23 may completely surround the corresponding sub-pixel 220, or may partially surround the corresponding sub-pixel 220. In the embodiment of the present application, the supporting structure 23 may surround one sub-pixel 220, may protect all sub-pixels 220 in one same sub-pixel group, may surround all sub-pixels 220 in one pixel unit 22, and may surround all sub-pixels 220 in one sub-pixel unit.

Referring to fig. 12, fig. 12 is a top view of another pixel unit provided in this embodiment, in this way, light emitting colors of a plurality of sub-pixels 220 in a pixel unit 22 are not completely the same, and fig. 12 illustrates an example where the pixel unit 22 has three sub-pixels 220 with different light emitting colors. In this manner, the support structure 23 simultaneously surrounds all of the sub-pixels 220 in the pixel unit 22.

In the embodiment of the present application, the number and distribution of the supporting structures 23 may be set based on the requirement. For convenience of graphic design and circuit interconnection, the sub-pixels 220 of different pixel units 22 are arranged corresponding to different support structures 23.

To solve the problem that the display effect is affected by the static electricity accumulated at the end portions of the two vertical driving electrodes 31 of the sub-pixel 220, as shown in fig. 10 and 12, a gap is formed between the supporting structure 23 and the surrounding sub-pixel 220; the side of the pixel unit 22 facing away from the array substrate 21 has an insulating encapsulation layer 24, and the insulating encapsulation layer 24 also fills the gap. Therefore, the sub-pixel 220 surrounded by the insulating sealing layer 24 and the supporting structure 23 can be sealed well, and external static electricity is prevented from interfering with the sub-pixel 220.

In the embodiment of the present application, the driving electrode 31 is a light-tight reflective electrode. The material of the driving electrode 31 includes one or more of Al, Ag, and Ti, and has good conductivity and reflectivity. Therefore, the emergent light of each sub-pixel 220 is emergent in the direction from the array substrate 21 to the sub-pixel 220, and the emergent light of the sub-pixel 220 is prevented from being emergent in the plane direction parallel to the array substrate 21, so that on one hand, the light emitting efficiency can be improved, and on the other hand, the problem of light crosstalk of the sub-pixels 220 with different light emitting colors can be avoided.

In the embodiment of the present application, the driving electrode 31 with high reflectivity and standing on the plane perpendicular to the array substrate 21 may be adopted, and the sub-pixel region is defined by the driving electrode 31, and the pixel defining layer may not be required to be disposed.

In order to further improve the light extraction efficiency of the sub-pixels 220, in the same sub-pixel 220, the distance between the two driving electrodes 31 is gradually increased in the direction from the array substrate 21 to the pixel unit 22, that is, the driving electrodes 31 have a set inclination angle with respect to the array substrate 21, and a bell mouth structure with a wide top and a narrow bottom is formed. On one hand, the distance between two driving electrodes 31 in the same sub-pixel 220 gradually increases in the direction in which the array substrate 21 points to the pixel unit 22, so that the driving electrodes 31 can reflect light rays propagating in the transverse direction upwards, and the light extraction efficiency is improved, on the other hand, under the condition that the distance between two driving electrodes 31 gradually increases in the direction in which the array substrate 21 points to the pixel unit 22, the width of the light emitting layer 32 is set to be uniform in the direction in which the array substrate 21 points to the pixel unit 22, and the width of other functional layers between the light emitting layer 32 and the two driving electrodes 31 gradually increases in the direction in which the array substrate 21 points to the pixel unit 22, and the light extraction efficiency of the sub-pixel can be improved.

As can be seen from the above description, in the embodiment of the present application, the sub-pixel 220 with the traditional planar structure is converted into a three-dimensional structure, so that the light-emitting direction can be eliminated, and the light extraction efficiency can be improved through multi-interface reflection. The projection shape of the sub-pixel 220 on the array substrate 21 may be a geometric figure such as a square, a circle, a fan, etc. The display resolution can also be greatly improved due to the smaller size of the sub-pixels 220 of the stereoscopic structure.

Based on the foregoing embodiment, another embodiment of the present application further provides a manufacturing method for manufacturing the display panel provided by the foregoing embodiment.

Referring to fig. 13, fig. 13 is a schematic flowchart of a manufacturing method of a display panel according to an embodiment of the present disclosure, where the manufacturing method includes:

step S11: an array substrate is provided.

Step S12: forming a plurality of pixel units on the array substrate, wherein each pixel unit comprises a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; and a light emitting layer between two driving electrodes adjacent in the first direction.

In one mode, a method of forming a pixel cell includes: firstly, forming a plurality of driving electrodes which are arranged at intervals and are vertical to an array substrate on the array substrate; a light emitting layer is then formed between the driving electrodes. Fig. 14-18 show specific process flow diagrams of the method, and the distance between two driving electrodes 31 in the same sub-pixel in the prepared display panel is not changed in the direction in which the array substrate 21 points to the pixel unit 22.

Referring to fig. 14 to 18, fig. 14 to 18 are process flow charts of a method for manufacturing a display panel according to an embodiment of the present application, where the method includes:

first, as shown in fig. 14, vertical driving electrodes 31 are formed on the array substrate 21. The desired driving electrode 31 may be formed by sequentially performing processes of plating, exposure, development, and etching. The support layer of the desired pattern structure may be prepared prior to forming the driving electrode 31. In this manner, since the vertical driving electrode 31 has a larger lateral width, it is not necessary to provide a pixel defining layer, a supporting layer, or a small number of supporting structures.

Then, as shown in fig. 15, an electron injection layer and an electron transport layer 33 are formed on one side of the driving electrode 31. The electron injection layer and the electron transport layer 33 can be formed by an evaporation process.

Further, as shown in fig. 16, a light-emitting layer 32 is formed on the electron transport layer 33 side. The light emitting layers 32 of the sub-pixels of different colors are formed by vapor deposition. The light emitting layers 32 of the same color sub-pixels are simultaneously formed by evaporation.

As shown in fig. 17, a hole transport layer 34 and a hole injection layer are formed on one side of the light-emitting layer 32. The hole transport layer 34 and the hole injection layer are prepared by an evaporation process.

Finally, as shown in fig. 18, a thin film encapsulation is performed, and the pixel unit is encapsulated and protected by an encapsulation layer 24.

In another mode, a method of forming a pixel unit includes: firstly, forming a plurality of photoresist structures which are arranged at intervals on an array substrate, wherein the width of each photoresist structure is gradually increased in the direction away from the array substrate; then, forming driving electrodes at least on the side wall of the light resistance structure, wherein in the same sub-pixel, the distance between the two driving electrodes is gradually increased in the direction of the array substrate pointing to the pixel unit; and a light emitting layer is formed between the driving electrodes. The specific process flow diagram of the method is shown in fig. 19-24, and in the prepared display panel, in the same sub-pixel, the distance between two driving electrodes 31 gradually increases in the direction in which the array substrate 21 points to the pixel unit 22; the width of the light emitting layer 32 is uniform in the direction in which the array substrate 21 points to the pixel unit 22; the widths of the other functional layers between the light emitting layer 32 and the two driving electrodes 31 gradually increase in a direction in which the array substrate 21 points to the pixel unit 22.

Referring to fig. 19 to 24, fig. 19 to 24 are process flow diagrams of another display panel manufacturing method according to an embodiment of the present application, where the method includes:

first, as shown in fig. 19, a patterned photoresist is formed on the array substrate 21. By this exposure and development, a resist of a desired pattern structure is obtained. Wherein the photoresist can be used as a support layer on the array substrate 21 and has a support structure 23.

Then, as shown in fig. 20, the driving electrode 31 is formed at least on the side wall of the photoresist. The desired driving electrode 31 may be formed by sequentially performing processes of plating, exposure, development, and etching.

As shown in fig. 21, an electron injection layer and an electron transport layer 33 are formed on one side of the drive electrode 31. The electron injection layer and the electron transport layer 33 can be formed by an evaporation process.

As shown in fig. 22, the light-emitting layer 32 is formed on the electron transport layer 33 side. The light emitting layers 32 of the sub-pixels of different colors are formed by vapor deposition. The light-emitting layers 32 of the same color sub-pixels are simultaneously formed by vapor deposition.

As shown in fig. 23, a hole transport layer 34 and a hole injection layer are formed on one side of the light-emitting layer 32. The hole transport layer 34 and the hole injection layer are prepared by an evaporation process.

Finally, as shown in fig. 24, by performing film encapsulation, the pixel unit is encapsulated and protected by an encapsulation layer 24.

In the method shown in fig. 19-24, the photoresist material is used to form the support post by exposure and development, and the metal film is plated on the support post to form the driving electrode 31, thereby solving the problem of long time for excessively thick metal plating. The patterned photoresist can define pixels, and the thinner metal film enables the driving electrode 31 to have better reflectivity and to have a shape of a horn mouth with a wide upper part and a narrow lower part, thereby being better beneficial to light emission.

Based on the foregoing embodiment, another embodiment of the present application further provides an electronic device, where the electronic device is shown in fig. 25.

Referring to fig. 25, fig. 25 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device includes the display panel 51 according to any one of the embodiments of the present disclosure.

In the embodiment of the application, the electronic device can be an electronic device with a display function, such as a mobile phone, a tablet computer and an intelligent wearable device.

The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. As for the manufacturing method and the electronic device disclosed in the embodiments, since the manufacturing method and the electronic device correspond to the display panel disclosed in the embodiments, the description is relatively simple, and the relevant points can be described by referring to the corresponding parts of the display panel.

It is to be understood that in the description of the present application, the drawings and the description of the embodiments are to be regarded as illustrative in nature and not as restrictive. Like numerals refer to like structures throughout the description of the embodiments. Additionally, the figures may exaggerate the thicknesses of some layers, films, panels, regions, etc. for ease of understanding and ease of description. It will also be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In addition, "on …" means that an element is positioned on or under another element, but does not essentially mean that it is positioned on the upper side of another element according to the direction of gravity.

The terms "upper," "lower," "top," "bottom," "inner," "outer," and the like refer to an orientation or positional relationship relative to an orientation or positional relationship shown in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, comprising:

an array substrate;

the pixel units are positioned on one side of the array substrate and comprise a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; a light emitting layer between two of the driving electrodes adjacent in the first direction;

the first direction is parallel to the plane of the array substrate;

in the same pixel unit, two sub-pixels adjacent to each other in the first direction share one driving electrode.

2. The display panel according to claim 1, wherein the two driving electrodes of the sub-pixel are respectively a first electrode and a second electrode which are opposite;

the pixel unit comprises at least two sub-pixels with the same light-emitting color, a first electrode of each sub-pixel with the same light-emitting color is electrically connected with a first connecting electrode, a second electrode of each sub-pixel with the same light-emitting color is electrically connected with a second connecting electrode, and the first connecting electrode and the second connecting electrode are respectively connected with different electric signals.

3. The display panel according to claim 2, wherein the pixel unit comprises a sub-pixel group, the sub-pixel group comprises a plurality of sub-pixels arranged in sequence along the first direction, and the sub-pixels emit light of the same color in the same sub-pixel group.

4. The display panel according to claim 3, wherein the sub-pixel group of the pixel unit includes a first sub-pixel group and a second sub-pixel group, and the sub-pixels of the first sub-pixel group and the sub-pixels of the second sub-pixel group emit light of different colors;

the first sub-pixel group and the second sub-pixel group are arranged along a second direction, the second direction is crossed with the first direction, and the second direction is parallel to the plane of the array substrate.

5. The display panel according to claim 4, wherein in the first sub-pixel group, the first electrodes of the sub-pixels are connected to the first connecting electrode, and the second electrodes of the sub-pixels are connected to the second connecting electrode;

in the second sub-pixel group, one of the first electrode and the second electrode of the sub-pixel is connected with the second connecting electrode, and the other of the first electrode and the second electrode of the sub-pixel is connected with the third connecting electrode.

6. The display panel according to claim 4, wherein in the first sub-pixel group, the first electrodes of the sub-pixels are connected to the first connection electrodes, and the second electrodes of the sub-pixels are connected to the second connection electrodes;

in the second sub-pixel group, the second electrode of the sub-pixel is connected with the third connecting electrode;

in the second direction, the first electrodes of two adjacent sub-pixels are the same electrode.

7. The display panel of claim 6, wherein the pixel unit further comprises a third group of sub-pixels; in the same pixel unit, the sub-pixels in different sub-pixel groups have different light-emitting colors, and the first sub-pixel group, the second sub-pixel group and the third sub-pixel group are sequentially arranged in the second direction;

in the third sub-pixel group, the second electrode of the sub-pixel is connected with a fourth connecting electrode;

in the second direction, the first electrodes of the three sub-pixels which are continuously arranged are the same electrode.

8. The display panel according to claim 4, wherein in the first sub-pixel group, the first electrodes of the sub-pixels are connected to the first connection electrodes, and the second electrodes of the sub-pixels are connected to the second connection electrodes;

in the second sub-pixel group, one of the first electrode and the second electrode of the sub-pixel is connected with the second connecting electrode.

9. The display panel of claim 8, the pixel unit further comprising a third sub-pixel group; in the same pixel unit, the sub-pixels in different sub-pixel groups have different light-emitting colors, and the first sub-pixel group, the second sub-pixel group and the third sub-pixel group are sequentially arranged in the second direction;

the first electrode of the sub-pixel in the second sub-pixel group is connected with the second connecting electrode, and the second electrode of the sub-pixel in the second sub-pixel group and the second electrode of the adjacent sub-pixel in the third sub-pixel group are the same electrode;

in the third sub-pixel group, the first electrode of the sub-pixel is connected with a third connecting electrode, and the second electrode of the sub-pixel is connected with a fourth connecting electrode;

or the like, or a combination thereof,

the second electrodes of the sub-pixels in the second sub-pixel group are connected with the second connecting electrode, and the first electrodes of the sub-pixels in the second sub-pixel group and the first electrodes of the adjacent sub-pixels in the third sub-pixel group are the same electrode;

in the third sub-pixel group, the second electrode of the sub-pixel is connected with the third connecting electrode, and the first electrode of the sub-pixel is connected with the fourth connecting electrode.

10. The display panel of claim 1, wherein the pixel unit comprises at least one sub-pixel unit; the sub-pixel unit is provided with a plurality of sub-pixels which have different light-emitting colors and are sequentially arranged in the first direction;

in the same sub-pixel unit, two adjacent sub-pixels have the same driving electrode.

11. The display panel according to claim 10, wherein the same sub-pixel unit has a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in order in the first direction;

the display panel is provided with four connecting electrodes which are sequentially arranged in a second direction, and the pixel unit is positioned between two adjacent connecting electrodes; the second direction intersects the first direction;

the driving electrode of one side of the first sub-pixel, which is far away from the second sub-pixel, is connected with a corresponding connecting electrode; the driving electrode between the first sub-pixel and the second sub-pixel is connected with a corresponding connecting electrode; the driving electrode between the second sub-pixel and the third sub-pixel is connected with a corresponding connecting electrode; the driving electrode of the third sub-pixel, which is far away from the second sub-pixel, is connected with a corresponding connecting electrode.

12. The display panel according to claim 1, wherein the array substrate comprises: the array substrate comprises a substrate and a reflecting structure positioned on one side of the substrate facing the pixel unit, wherein the reflecting structure is at least partially overlapped with the pixel unit along a direction vertical to the plane of the array substrate;

the surface of one side, away from the substrate, of the reflecting structure is a reflecting surface, and the distance from the reflecting surface to the substrate is gradually reduced from the middle of the reflecting surface to the edge area.

13. The display panel according to claim 1, wherein the array substrate faces a side support layer of the pixel unit, the support layer comprising a plurality of support structures;

in the direction perpendicular to the plane of the array substrate, the support structure at least surrounds one sub-pixel.

14. The display panel according to claim 1, wherein the driving electrodes are all light-opaque reflective electrodes.

15. The display panel according to claim 1, wherein a distance between two driving electrodes in the same sub-pixel gradually increases in a direction in which the array substrate points to the pixel unit.

16. A method of manufacturing a display panel according to any one of claims 1 to 15, comprising:

providing an array substrate;

forming a plurality of pixel units on the array substrate, wherein each pixel unit comprises a plurality of sub-pixels; the sub-pixel includes: two drive electrodes opposing in a first direction; a light emitting layer between two of the driving electrodes adjacent in the first direction;

wherein the first direction is parallel to the array substrate; in the same pixel unit, two sub-pixels adjacent to each other in the first direction share the same driving electrode.

17. The method of manufacturing according to claim 16, wherein the method of forming the pixel unit comprises:

forming a plurality of driving electrodes which are arranged at intervals and are vertical to the array substrate on the array substrate;

the light emitting layer is formed between the driving electrodes.

18. The method of manufacturing a pixel as claimed in claim 16, wherein the method of forming the pixel unit comprises:

forming a plurality of light resistance structures which are arranged at intervals on the array substrate; the width of the light resistance structure is gradually increased in the direction far away from the array substrate;

forming the driving electrode at least on the side wall of the photoresist structure; in the same sub-pixel, the distance between the two driving electrodes gradually increases in the direction of the array substrate pointing to the pixel unit

The light emitting layer is formed between the driving electrodes.

19. An electronic device comprising a display panel according to any one of claims 1 to 15.