Display panel and display device

Abstract

The present application provides a display panel, which includes a plurality of light-emitting components and a plurality of electrophoretic units for emitting display light, wherein the electrophoretic units are arranged on the light-emitting side of the light-emitting components. Each of the electrophoretic units includes a pixel electrode and a common electrode, wherein a plurality of first electrophoretic particles and a plurality of second electrophoretic particles arranged on the side facing away from the light-emitting components are accommodated between the pixel electrode and the common electrode. The pixel electrode and the common electrode are used to form a driving electric field to drive the plurality of first electrophoretic particles and the plurality of second electrophoretic particles to diffuse to the light-emitting side of the light-emitting component when the external ambient light is strong, so that the second electrophoretic particles absorb the external ambient light directed thereto, and the first electrophoretic particles reflect the display light directed thereto to the light-emitting component so as to be emitted from the display panel from the surrounding side of the plurality of second electrophoretic particles, thereby improving the light-emitting efficiency of the display panel while reducing the influence of the ambient reflected light on the display effect of the display panel. The present application also provides a display device.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) display panels have been widely used in the display field and have broad development prospects due to their advantages such as lightness, flexibility, high brightness, low power consumption, high contrast, fast response, high clarity, and wide color gamut.

[0003] In the related art, OLED displays are generally top-emitting, and the anode of the top-emitting OLED display is generally a fully reflective metal (ITO / Ag / ITO). In order to ensure the light output efficiency, a larger light-emitting layer opening ratio is used as much as possible. However, a larger light-emitting layer opening ratio will cause strong ambient light reflection when the external ambient light is irradiated on the anode metal, thereby affecting the display effect. In order to solve this problem, a quarter-wave plate and a polarizer are usually added to the display panel to reduce the impact of ambient reflected light. However, since the polarizer absorbs half of the light output intensity, the light output efficiency of the display panel is reduced by half.

[0004] Therefore, how to improve the light extraction efficiency of the display panel and reduce the influence of the ambient reflected light on the display effect of the display panel is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a display panel and a display device having the display panel, which aims to solve the problem in the prior art of how to improve the light output efficiency of the display panel while reducing the influence of ambient reflected light on the display effect of the display panel.

[0006] In order to solve the above technical problems, an embodiment of the present application provides a display panel, which includes a light-emitting component for emitting display light, and also includes an interlayer substrate, an electrophoresis component and a packaging substrate. Among them, the interlayer substrate is arranged on one side of the light-emitting component, the electrophoresis component is arranged on the side of the interlayer substrate facing away from the light-emitting component, and the packaging substrate is arranged on the side of the electrophoresis component facing away from the interlayer substrate. The light-emitting component includes a plurality of light-emitting elements, and the plurality of light-emitting elements are used to emit the display light. The electrophoresis component includes a plurality of electrophoresis units, and the plurality of electrophoresis units correspond to the plurality of light-emitting elements one by one, and the plurality of electrophoresis units are located on the light-emitting side of the plurality of light-emitting elements. Each of the electrophoresis units includes a pixel electrode, a common electrode and an electrophoresis liquid, the pixel electrode and the common electrode are arranged between the interlayer substrate and the packaging substrate, the pixel electrode and the common electrode are arranged relative to each other to form a containing space, and the electrophoresis liquid is contained in the containing space. The electrophoretic liquid includes an electrophoretic medium, a plurality of first electrophoretic particles, and a plurality of second electrophoretic particles, wherein the plurality of first electrophoretic particles and the plurality of second electrophoretic particles have the same polarity, the plurality of first electrophoretic particles and the plurality of second electrophoretic particles are layered in the electrophoretic medium, and the plurality of second electrophoretic particles are located on the side of the plurality of first electrophoretic particles that is opposite to the interlayer substrate. The pixel electrode and the common electrode are used to form a driving electric field, and the driving electric field is used to drive the plurality of first electrophoretic particles and the plurality of second electrophoretic particles to move toward the pixel electrode or the common electrode, the first electrophoretic particles are used to reflect the display light emitted by the light-emitting element to the first electrophoretic particles, and the second electrophoretic particles are used to absorb the external ambient light emitted to the second electrophoretic particles.

[0007] In summary, by controlling the driving electric field formed between the pixel electrode and the common electrode, the movement of multiple first electrophoretic particles and multiple second electrophoretic particles with the same polarity in the accommodating space can be controlled, thereby controlling the reflection of the display light emitted by the light-emitting element by the multiple first electrophoretic particles and controlling the absorption of the external ambient light by the multiple second electrophoretic particles. For example, when the external ambient light is weak, a voltage is applied between the pixel electrode and the common electrode to form a first driving electric field, so that the multiple first electrophoretic particles and the multiple second electrophoretic particles move to gather on one side of the accommodating space under the drive of the first driving electric field, reducing the distribution area of ​​the multiple first electrophoretic particles and the multiple second electrophoretic particles in the horizontal direction of the accommodating space, so that more of the display light is emitted from the display panel through the accommodating space. When the external ambient light is strong, a reverse voltage is applied between the pixel electrode and the common electrode to form a second driving electric field in the opposite direction to the first driving electric field, so that the plurality of the first electrophoretic particles and the plurality of the second electrophoretic particles are diffused to the surface of the accommodating space under the drive of the second driving electric field, increasing the distribution area of ​​the plurality of the first electrophoretic particles and the plurality of the second electrophoretic particles in the horizontal direction of the accommodating space, so that more of the second electrophoretic particles absorb the external ambient light, reducing the interference of the external ambient light on the display light. At the same time, the first electrophoretic particle reflects the display light irradiated on the first electrophoretic particle to the light-emitting component, so that the display light is reflected between the first electrophoretic particle and the light-emitting component, and finally emitted from the display panel, thereby improving the light extraction efficiency of the display panel. Therefore, the display panel provided in the present application can reduce the influence of the external ambient light while having a high light extraction efficiency, thereby enabling the display panel to obtain a better display effect.

[0008] In an exemplary embodiment, the display panel further includes a base substrate, a driving circuit layer and a flat layer. The driving circuit layer is arranged on a side of the base substrate facing the light-emitting component, the flat layer is arranged on a side of the driving circuit layer facing away from the base substrate, and the light-emitting component is arranged on a side of the flat layer facing away from the driving circuit layer. The driving circuit layer is used to drive the light-emitting component to emit light, and the flat layer is provided with a plurality of spaced vias exposing the driving circuit layer.

[0009] In an exemplary embodiment, the light-emitting component further includes a pixel definition layer, a plurality of anode layers and a cathode layer. The plurality of anode layers are arranged on the side of the flat layer facing away from the driving circuit layer, and the plurality of anode layers correspond one-to-one to the plurality of via holes. At least part of the anode layer is accommodated in the corresponding via hole and is electrically connected to the driving circuit layer. The pixel definition layer is arranged on the side of the plurality of anode layers facing away from the flat layer and the peripheral side of the plurality of anode layers, and the anode layer is provided with a plurality of accommodating holes for exposing the plurality of anode layers, and the plurality of accommodating holes correspond one-to-one to the plurality of anode layers. A light-emitting element is accommodated in each of the accommodating holes, and the light-emitting element is electrically connected to the anode layer. The cathode layer is arranged on the side of the pixel definition layer facing away from the plurality of anode layers and is electrically connected to the light-emitting element. The display panel further includes an encapsulation layer, which is arranged on the side of the cathode layer facing away from the pixel definition layer, and the encapsulation layer is used to encapsulate the light-emitting component.

[0010] In an exemplary embodiment, each of the anode layers includes a first anode region and a second anode region. The position of the first anode region corresponds to the position of the light emitting element, and the first anode region is connected to one end of the light emitting element facing the flat layer, and the second anode region is arranged on the peripheral side of the first anode region. The surface of the first anode region in contact with the light emitting element is a curved surface convex toward the light emitting element.

[0011] In an exemplary embodiment, the electrophoresis component further includes a gate insulating layer and a passivation layer, wherein the gate insulating layer is arranged on the side of the interlayer substrate facing away from the encapsulation layer, and the passivation layer is arranged on the side of the gate insulating layer facing away from the interlayer substrate. Each of the electrophoresis units further includes a drive transistor and a signal connection terminal arranged at intervals, and the drive transistor includes an active layer, a source electrode, a drain electrode, and a gate electrode. The gate electrode is embedded in the gate insulating layer, and the active layer, the source electrode, and the drain electrode are embedded in the passivation layer. The passivation layer is provided with a first opening exposing at least part of the drain electrode, and the source electrode and the drain electrode are spaced at opposite ends of the active layer and are electrically connected to the active layer. The signal connection terminal is embedded in one end of the passivation layer away from the active layer, and the passivation layer is provided with a second opening exposing at least part of the signal connection terminal. The passivation layer is used to protect the active layer, the source electrode, the drain electrode, and the signal connection terminal.

[0012] In an exemplary embodiment, each of the electrophoresis units further includes an annular support member, the annular support member is disposed on a side of the passivation layer facing away from the gate insulating layer, and the annular support member is located between the first opening and the second opening, and the annular support member is used to support the pixel electrode and the common electrode. One end of the pixel electrode extends to the drain electrode in the first opening, so that the pixel electrode is electrically connected to the drain electrode, and one end of the common electrode extends to the signal connection terminal in the second opening, so that the common electrode is electrically connected to the signal connection terminal.

[0013] In an exemplary embodiment, the passivation layer is further provided with a plurality of third openings, one of the third openings is located between one of the second openings and one of the first openings, and the third openings are spaced apart from the first openings, and the inner walls of the third openings opposite to each other are used to support a portion of the pixel electrode and a portion of the common electrode. One end of the pixel electrode extends to the drain electrode in the first opening, so that the pixel electrode is electrically connected to the drain electrode, and one end of the common electrode extends to the signal connection terminal in the second opening, so that the common electrode is electrically connected to the signal connection terminal.

[0014] In an exemplary embodiment, the gate insulating layer is provided with a plurality of fourth openings, the plurality of fourth openings correspond to the plurality of third openings one by one, and one of the fourth openings is connected to one of the third openings, and the orthographic projection of one of the fourth openings on the interlayer substrate is located between the orthographic projection of one of the driving transistors on the interlayer substrate and the orthographic projection of one of the signal connection terminals on the interlayer substrate. Part of the inner wall of the fourth opening is used to support part of the pixel electrode and part of the common electrode. Part of the pixel electrode and part of the common electrode are respectively arranged on the inner walls of the opposite sides of the connected third opening and the fourth opening.

[0015] In an exemplary embodiment, each of the electrophoretic cells further comprises a transparent barrier element, which is disposed in the accommodation space and is respectively connected to the pixel electrode and the common electrode located on opposite sides of the accommodation space, and the barrier element divides the accommodation space into a first accommodation space and a second accommodation space which are not connected and are stacked, the first accommodation space being disposed on a side of the barrier element facing the light-emitting component, and the second accommodation space being disposed on a side of the barrier element facing away from the light-emitting component. Part of the electrophoretic medium is accommodated in the first accommodation space, and part of the electrophoretic medium is accommodated in the second accommodation space, and a plurality of the first electrophoretic particles are accommodated in the first accommodation space, and a plurality of the second electrophoretic particles are accommodated in a plurality of the second accommodation spaces.

[0016] Based on the same inventive concept, an embodiment of the present application further provides a display device, which includes a housing and the above-mentioned display panel, wherein the display panel is disposed in the housing.

[0017] In summary, the display device provided in the embodiment of the present application includes a shell and a display panel, and the display panel can control the movement of multiple first electrophoretic particles and multiple second electrophoretic particles with the same polarity in the accommodating space by controlling the driving electric field formed between the pixel electrode and the common electrode, thereby controlling the reflection of the display light emitted by the light-emitting element by the multiple first electrophoretic particles and controlling the absorption of the external ambient light by the multiple second electrophoretic particles. For example, when the external ambient light is weak, a voltage is applied between the pixel electrode and the common electrode to form a first driving electric field, so that the multiple first electrophoretic particles and the multiple second electrophoretic particles move to gather on one side of the accommodating space under the drive of the first driving electric field, reducing the distribution area of ​​the multiple first electrophoretic particles and the multiple second electrophoretic particles in the horizontal direction of the accommodating space, so that more of the display light is emitted from the display panel through the accommodating space. When the external ambient light is strong, a reverse voltage is applied between the pixel electrode and the common electrode to form a second driving electric field in the opposite direction to the first driving electric field, so that the plurality of the first electrophoretic particles and the plurality of the second electrophoretic particles are diffused to the surface of the accommodating space under the drive of the second driving electric field, increasing the distribution area of ​​the plurality of the first electrophoretic particles and the plurality of the second electrophoretic particles in the horizontal direction of the accommodating space, so that more of the second electrophoretic particles absorb the external ambient light, reducing the interference of the external ambient light on the display light. At the same time, the first electrophoretic particle reflects the display light irradiated on the first electrophoretic particle to the light-emitting component, so that the display light is reflected between the first electrophoretic particle and the light-emitting component, and finally emitted from the display panel, thereby improving the light extraction efficiency of the display panel. Therefore, the display panel provided in the present application can reduce the influence of the external ambient light while having a high light extraction efficiency, thereby enabling the display panel to obtain a better display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a first partial cross-sectional structure of a display panel provided in the first embodiment of the present application;

[0020] Figure 2 for Figure 1 A schematic diagram of a first partial cross-sectional structure of an electrophoretic assembly of a display panel shown;

[0021] Figure 3 for Figure 1 A schematic diagram of a second partial cross-sectional structure of a display panel shown;

[0022] Figure 4 for Figure 1 A schematic diagram of a second partial cross-sectional structure of an electrophoretic assembly of a display panel shown;

[0023] Figure 5 A partial cross-sectional structural schematic diagram of a display panel provided in a second embodiment of the present application;

[0024] Figure 6 for Figure 5 A partial cross-sectional structural schematic diagram of an electrophoretic assembly of a display panel shown;

[0025] Figure 7 A schematic diagram of a partial cross-sectional structure of a display panel provided in a third embodiment of the present application;

[0026] Figure 8 for Figure 7 An enlarged schematic diagram of a local structure VIII of the display panel is shown;

[0027] Fig. 9 A schematic diagram of a partial cross-sectional structure of a display panel provided in a fourth embodiment of the present application;

[0028] Fig.10 A schematic diagram of the structure of a display device provided in a fifth embodiment of the present application;

[0029] Fig.11 A schematic flow chart of a method for manufacturing a display panel provided in a sixth embodiment of the present application;

[0030] Fig.12 for Fig.11 A schematic flow chart of step 20 in the manufacturing method shown;

[0031] Fig.13 for Fig.11 FIG. 4 is a flow chart of step 40 in the manufacturing method shown.

[0032] Description of reference numerals:

[0033] 1-display panel; 10-substrate substrate; 20-driving circuit layer; 30-flat layer; 30a-via hole; 50-light-emitting component; 51-pixel definition layer; 51a-accommodating hole; 52-anode layer; 52a-first anode area; 52b-second anode area; 53-light-emitting element; 55-cathode layer; 60-packaging layer; 70-interlayer substrate; 80-electrophoretic component; 81-gate insulating layer; 82-passivation layer; 83-electrophoretic unit; 90-packaging substrate; 100-display device; 821-first opening; 822-second opening; 823-third opening; 811-fourth opening; 831-driving transistor; 832-signal connection terminal; 833-ring support member; 834-pixel electrode; 835-common electrode; 836-blocking element; 8311-active layer; 8311a-photosensitive layer; 8312-source; 8313-drain; 8315-gate; 8341-first pixel electrode; 8342-second pixel electrode; 8343-third pixel electrode; 8351-first common electrode; 8352-second common electrode; 8353-third common electrode; A-accommodating space; A1-display area; A2-avoidance area; a1-first accommodating space; a2-second accommodating space; b-electrophoretic liquid; b1-electrophoretic medium; b2-first electrophoretic particle; b3-second electrophoretic particle; S10-S50-steps of the method for manufacturing a display panel; S21-S22-sub-steps of step 20; S41-S48-sub-steps of step 40. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0035] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions. It should also be understood that "at least one" described herein means one or more, such as one, two or three, etc., and "plurality" means at least two, such as two or three, etc., unless otherwise clearly defined.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0038] See also Figure 1 , Figure 1 This is a schematic diagram of a first partial cross-sectional structure of a display panel provided in the first embodiment of the present application. The present application provides a display panel having a high light extraction efficiency. At the same time, the display panel can also reduce the influence of external ambient light, thereby obtaining a better display effect. Figure 1As shown, the display panel 1 includes a stacked base substrate 10, a light emitting component 50, an interlayer substrate 70, an electrophoretic component 80, and a packaging substrate 90, wherein the light emitting component 50 is arranged on one side of the base substrate 10, the interlayer substrate 70 is arranged on the side of the light emitting component 50 facing away from the base substrate 10, the electrophoretic component 80 is arranged on the side of the interlayer substrate 70 facing away from the light emitting component 50, and the packaging substrate 90 is arranged on the side of the electrophoretic component 80 facing away from the interlayer substrate 70. The base substrate 10 is used to carry the light emitting component 50, the interlayer substrate 70 is used to carry the electrophoretic component 80, and the packaging substrate 90 is used to package the electrophoretic component 80. The light emitting component 50 includes a plurality of light emitting elements 53, and the plurality of light emitting elements 53 are used to emit display light. The electrophoretic component 80 includes a plurality of electrophoretic units 83, and the plurality of electrophoretic units 83 are arranged on the side of the interlayer substrate 70 facing away from the light-emitting component 50. The plurality of electrophoretic units 83 correspond one-to-one to the plurality of light-emitting elements 53, and the plurality of electrophoretic units 83 are located on the light-emitting side of the plurality of light-emitting elements 53, so that the display light emitted by the light-emitting element 53 is emitted through the corresponding electrophoretic unit 83.

[0039] In the embodiment of the present application, each of the electrophoretic units 83 includes a pixel electrode 834, a common electrode 835, and an electrophoretic liquid b. The pixel electrode 834 and the common electrode 835 are disposed between the interlayer substrate 70 and the encapsulation substrate 90, and the pixel electrode 834 and the common electrode 835 are disposed in the same layer. The pixel electrode 834 and the common electrode 835 are opposite to and spaced from each other to form an accommodation space A, and the electrophoretic liquid b is accommodated in the accommodation space A. The electrophoretic liquid b includes an electrophoretic medium b1, a plurality of first electrophoretic particles b2, and a plurality of second electrophoretic particles b3, wherein the electrophoretic medium b1 is accommodated in the accommodation space A, and the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 are arranged in layers in the electrophoretic medium b1. For example, the plurality of first electrophoretic particles b2 are dispersed in a region of the electrophoretic medium b1 away from the packaging substrate 90, and the plurality of second electrophoretic particles b3 are dispersed in a region of the electrophoretic medium b1 close to the packaging substrate 90, that is, the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 are arranged in layers. The electrophoretic medium b1 is used to carry the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3, the first electrophoretic particles b2 are used to reflect the display light emitted by the light-emitting element 53 to the first electrophoretic particles b2, and the second electrophoretic particles b3 are used to absorb the external ambient light emitted to the second electrophoretic particles b3.

[0040] In the embodiment of the present application, the first electrophoretic particle b2 may be a reflective electrophoretic particle, and the second electrophoretic particle b3 may be a light-shielding electrophoretic particle. The first electrophoretic particle b2 and the second electrophoretic particle b3 have the same polarity, that is, the first electrophoretic particle b2 and the second electrophoretic particle b3 have positive or negative charges.

[0041] See also Figure 1 and Figure 2 , Figure 2 for Figure 1 The first partial cross-sectional structure diagram of the electrophoretic assembly 80 of the display panel is shown. In the embodiment of the present application, X represents the horizontal direction and Y represents the vertical direction. The pixel electrode 834 and the common electrode 835 are used to form a driving electric field (such as a driving field) from the pixel electrode 834 to the common electrode 835 or from the common electrode 835 to the pixel electrode 834. Figure 2 The driving electric field is used to drive the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 accommodated in the accommodation space A to move in a horizontal direction.

[0042] It can be understood that by controlling the driving electric field formed between the pixel electrode 834 and the common electrode 835, the horizontal movement of the multiple first electrophoretic particles b2 and the multiple second electrophoretic particles b3 with positive or negative charges can be controlled, thereby controlling the reflection of the display light emitted by the light-emitting element 53 by the multiple first electrophoretic particles b2 and controlling the absorption of external ambient light by the multiple second electrophoretic particles b3.

[0043] Specifically, see Figure 1 and Figure 3 , Figure 3 for Figure 1The second partial cross-sectional structure schematic diagram of the display panel is shown. When the ambient light is weak, a voltage is applied between the pixel electrode 834 and the common electrode 835 to form a first driving electric field, so that the first electrophoretic particles b2 and the second electrophoretic particles b3 move to gather on one side of the accommodating space A under the driving of the first driving electric field, reducing the distribution area of ​​the first electrophoretic particles b2 and the second electrophoretic particles b3 in the horizontal direction of the accommodating space A, so that more display light is emitted from the display panel 1 through the accommodating space A. When the ambient light is strong, a reverse voltage is applied between the pixel electrode 834 and the common electrode 835 to form a second driving electric field opposite to the first driving electric field, so that the first electrophoretic particles b2 and the second electrophoretic particles b3 are diffused to the surface of the accommodating space A under the drive of the second driving electric field, increasing the distribution area of ​​the first electrophoretic particles b2 and the second electrophoretic particles b3 in the horizontal direction of the accommodating space A, so that more second electrophoretic particles b3 absorb the ambient light, reducing the interference of the ambient light on the display light. At the same time, the first electrophoretic particle b2 reflects the display light irradiated on the first electrophoretic particle b2 to the light-emitting component 50, so that the display light is reflected between the first electrophoretic particle b2 and the light-emitting component 50, and finally emitted from the display panel 1, thereby improving the light extraction efficiency of the display panel 1. Therefore, the display panel 1 provided in the present application can reduce the influence of the ambient light while having a high light extraction efficiency, thereby enabling the display panel 1 to obtain a better display effect.

[0044] It should be noted that the driving electric field formed by the pixel electrode 834 and the common electrode 835 means that the component of the electric field in the horizontal direction is stronger, so that the movement of the multiple first electrophoretic particles b2 and the multiple second electrophoretic particles b3 in the horizontal direction is easier to control, and the component of the electric field in the vertical direction is very small or there is no vertical component, so as to reduce the energy consumption of the display panel 1.

[0045] In an embodiment of the present application, the density of the multiple first electrophoretic particles b2 is greater than the density of the multiple second electrophoretic particles b3, and the density of the multiple first electrophoretic particles b2 is greater than or equal to the density of the electrophoretic medium b1, so that the multiple second electrophoretic particles b3 are located on the side of the multiple first electrophoretic particles b2 facing away from the light-emitting component 50, and the multiple second electrophoretic particles are located on the side of the multiple first electrophoretic particles b2 facing away from the light-emitting side of the light-emitting element 53, that is, the different densities of the first electrophoretic particles b2 and the second electrophoretic particles b3 are used to achieve the upper and lower layered arrangement of the two in the electrophoretic medium b1.

[0046] See also Figure 1 , Figure 2 and Figure 3 In the embodiment of the present application, each of the accommodating spaces A includes a connected display area A1 and two avoidance areas A2, wherein the two avoidance areas A2 are arranged on opposite sides of the display area A1, and one of the avoidance areas A2 is adjacent to the pixel electrode 834, and the other avoidance area A2 is adjacent to the common electrode 835. The orthographic projection of the display area A1 on the base substrate 10 covers the orthographic projection of the corresponding light-emitting element 53 on the base substrate 10, and the plurality of the first electrophoretic particles b2 and the plurality of the second electrophoretic particles b3 can be completely gathered in the avoidance area A2 located on one side of the display area A1 or diffused to at least a portion of the surface of the display area A1 under the driving of the driving electric field.

[0047] It can be understood that when the external ambient light is weak, the multiple first electrophoretic particles b2 and the multiple second electrophoretic particles b3 can be completely gathered in the avoidance area A2 located on the side of the display area A1, so that the display light emitted by the light-emitting element 53 to the display area A1 can be directly emitted from the display panel 1 through the display area A1, thereby ensuring the light output efficiency of the display panel 1 when the external ambient light is weak.

[0048] In an exemplary embodiment, the area of ​​the orthographic projection of the avoidance zone A2 on the base substrate 10 may be one-fifth of the area of ​​the orthographic projection of the display area A1 on the base substrate 10, to ensure that when the ambient light is weak, the avoidance zone A2 has sufficient space to accommodate multiple first electrophoretic particles b2 and multiple second electrophoretic particles b3.

[0049] In an exemplary embodiment, the number of the avoidance area A2 may be one, that is, one avoidance area A2 is disposed on a side of the display area A1 close to the pixel electrode 834 or a side of the display area A1 close to the common electrode 835 .

[0050] See also Figure 1 and Figure 3In the embodiment of the present application, the display panel 1 further comprises a driving circuit layer 20 and a flat layer 30 stacked on the base substrate 10, wherein the driving circuit layer 20 is arranged on the side of the base substrate 10 facing the light emitting component 50, that is, the driving circuit layer 20 is arranged on the side of the base substrate 10, the flat layer 30 is arranged on the side of the driving circuit layer 20 facing away from the base substrate 10 and covers the driving circuit layer 20, and the light emitting component 50 is arranged on the side of the flat layer 30 facing away from the driving circuit layer 20. The driving circuit layer 20 is used to drive the light emitting component 50 to emit light. The flat layer 30 is provided with a plurality of spaced via holes 30a exposing the driving circuit layer 20, that is, the plurality of via holes 30a penetrate the flat layer 30 in the thickness direction of the flat layer 30 so that part of the driving circuit layer 20 is not covered by the flat layer 30.

[0051] In the embodiment of the present application, the light-emitting component 50 further includes a pixel definition layer 51, a plurality of anode layers 52 and a cathode layer 55. The plurality of anode layers 52 are arranged on the side of the planar layer 30 facing away from the driving circuit layer 20, and the plurality of anode layers 52 correspond to the plurality of via holes 30a one by one. At least part of the anode layer 52 is accommodated in the corresponding via hole 30a and connected to the driving circuit layer 20, so that the anode layer 52 is electrically connected to the driving circuit layer 20. The pixel definition layer 51 is arranged on the side of the plurality of anode layers 52 facing away from the planar layer 30 and the peripheral side of the plurality of anode layers 52, that is, the pixel definition layer 51 covers the plurality of anode layers 52 on the planar layer 30. The pixel definition layer 51 is provided with a plurality of accommodation holes 51a for exposing the plurality of anode layers 52, and the plurality of accommodation holes 51a correspond to the plurality of anode layers 52 one by one. Each of the accommodating holes 51a accommodates one of the light-emitting elements 53, and the light-emitting element 53 is connected to the anode layer 52, so that the light-emitting element 53 is electrically connected to the anode layer 52. The cathode layer 55 is disposed on the side of the pixel definition layer 51 facing away from the anode layers 52 and covers the side of the pixel definition layer 51 facing away from the anode layers 52 and covers the side of the light-emitting elements 53 facing away from the anode layers 52. The cathode layer 55 is connected to the light-emitting element 53, so that the cathode layer 55 is electrically connected to the light-emitting element 53.

[0052] In the embodiment of the present application, each of the anode layers 52 includes a first anode region 52a and a second anode region 52b, wherein the first anode region 52a is located at a position of the corresponding light-emitting element 53 facing the base substrate 10 and is connected to the light-emitting element 53, and the second anode region 52b is located around the first anode region 52a. That is, the position of the first anode region 52a corresponds to the position of the light-emitting element 53, and the first anode region 52a is connected to one end of the light-emitting element 53 facing the flat layer 30, and the second anode region 52b is surrounded by the first anode region 52a. The surface of the first anode region 52a in contact with the light-emitting element 53 is a curved surface convex to the light-emitting element 53, that is, the center of the curved surface is located on the side of the first anode region 52a facing away from the light-emitting element 53.

[0053] It can be understood that by setting the surface where the first anode area 52a contacts the light-emitting element 53 as a curved surface, when the external ambient light is strong, that is, when a plurality of the first electrophoretic particles b2 and a plurality of the second electrophoretic particles b3 are distributed on the surface of the display area A1, the anode layer 52 can reflect more of the display light to the surrounding side of the display area A1, thereby improving the light output efficiency of the display panel 1.

[0054] In an exemplary embodiment, the surface of a portion of the planar layer 30 contacting the first anode region 52a may be prepared as a curved surface, so that the surface of the first anode region 52a formed in the portion of the planar layer 30 is also a curved surface.

[0055] See also Figure 1 In the embodiment of the present application, the display panel 1 further includes an encapsulation layer 60, which is disposed on the side of the cathode layer 55 facing away from the pixel definition layer 51 and covers the cathode layer 55. The encapsulation layer 60 is used to encapsulate the light-emitting components 50, so that the light-emitting components 50 are isolated from the outside, thereby preventing the light-emitting components 50 from being affected by impurities such as water vapor, oxygen or dust.

[0056] In the embodiment of the present application, the base substrate 10, the driving circuit layer 20, the flat layer 30, the light emitting component 50, the encapsulation layer 60 and the interlayer substrate 70 can form an OLED structure, specifically a low temperature polysilicon (LTPS) OLED structure. For display panels and display devices, the use of polysilicon liquid crystal materials has many advantages, such as thin film circuits can be made thinner and smaller, with lower power consumption, etc.

[0057] See also Figure 1 and Figure 4 , Figure 4 for Figure 1 A schematic diagram of a second partial cross-sectional structure of the electrophoretic assembly of the display panel is shown. In the embodiment of the present application, the insulating isolation layer of the electrophoretic assembly 80 further includes a gate insulating layer 81 and a passivation layer 82, wherein the gate insulating layer 81 is disposed on a side of the interlayer substrate 70 facing away from the encapsulation layer 60, and the passivation layer 82 is disposed on a side of the gate insulating layer 81 facing away from the interlayer substrate 70.

[0058] In the embodiment of the present application, each of the electrophoretic units 83 further includes a driving transistor 831 and a signal connection terminal 832. The driving transistor 831 includes an active layer 8311, a source electrode 8312, a drain electrode 8313, and a gate electrode 8315. The gate electrode 8315 is embedded in the gate insulating layer 81, and the side of the gate electrode 8315 facing the interlayer substrate 70 is in contact with the interlayer substrate 70, and the side of the gate electrode 8315 facing away from the interlayer substrate 70 is spaced from the side of the gate insulating layer 81 facing away from the interlayer substrate 70. That is, the gate insulating layer 81 covers the gate electrode 8315 to the interlayer substrate 70, and the gate insulating layer 81 is used to isolate the gate electrode 8315 from the active layer 8311, the source electrode 8312, and the drain electrode 8313. The active layer 8311, the source electrode 8312 and the drain electrode 8313 are embedded in the passivation layer 82 and contact the side of the gate insulating layer 81 facing away from the interlayer substrate 70. The passivation layer 82 is provided with a first opening 821 exposing at least a portion of the drain electrode 8313. The source electrode 8312 and the drain electrode 8313 are spaced apart and arranged at opposite ends of the active layer 8311, and the source electrode 8312 and the drain electrode 8313 are electrically connected to the active layer 8311, respectively. The side of the active layer 8311 facing the gate insulating layer 81, the side of the source electrode 8312 facing the gate insulating layer 81, and the side of the drain electrode 8313 facing the gate insulating layer 81 are flush, and are all in contact with the side of the gate insulating layer 81 facing away from the interlayer substrate 70. The side of the active layer 8311 facing away from the gate insulating layer 81, the side of the source electrode 8312 facing away from the gate insulating layer 81, and the side of part of the drain electrode 8313 facing away from the gate insulating layer 81 are spaced from the side of the passivation layer 82 facing away from the gate insulating layer 81, that is, the passivation layer 82 covers the active layer 8311, the source electrode 8312 and part of the drain electrode 8313 to the gate insulating layer 81. The signal connection terminal 832 is embedded in one end of the passivation layer 82 away from the active layer 8311, and the passivation layer 82 is provided with a second opening 822 exposing at least a portion of the signal connection terminal 832. The passivation layer 82 is used to protect the active layer 8311, the source electrode 8312, the drain electrode 8313 and the signal connection terminal 832. The side of the signal connection terminal 832 facing the gate insulating layer 81 is in contact with the gate insulating layer 81, and the side of part of the signal connection terminal 832 facing away from the gate insulating layer 81 is spaced from the side of the passivation layer 82 facing away from the gate insulating layer 81, that is, the passivation layer 82 covers part of the signal connection terminal 832 on the gate insulating layer 81.

[0059] See also Figure 1 and Figure 4 In the embodiment of the present application, each of the electrophoretic units 83 further includes an annular support member 833, which is disposed on the side of the passivation layer 82 facing away from the gate insulating layer 81, and the annular support member 833 is located between the first opening 821 and the second opening 822. The annular support member 833 is used to support the pixel electrode 834 and the common electrode 835. In the embodiment of the present application, the cross section of the annular support member 833 (i.e., the cross section along the horizontal direction X) can be a hollow rectangle as a whole, i.e., an annular rectangular cross section.

[0060] In the embodiment of the present application, the pixel electrode 834 includes a first pixel electrode 8341, a second pixel electrode 8342 and a third pixel electrode 8343, and the common electrode 835 includes a first common electrode 8351, a second common electrode 8352 and a third common electrode 8353. The first pixel electrode 8341 and the first common electrode 8351 are respectively disposed on the inner surfaces of opposite ends of the annular support member 833, the second pixel electrode 8342 and the second common electrode 8352 are disposed on the side of the annular support member 833 facing away from the passivation layer 82, and one end of the second pixel electrode 8342 is connected to the first pixel electrode 8341, and one end of the second common electrode 8352 is connected to the first common electrode 8351. Part of the third pixel electrode 8343 and part of the third common electrode 8353 are disposed on the outer peripheral surface of the opposite ends of the annular support member 833. Specifically, the third pixel electrode 8343 is connected to one end of the second pixel electrode 8342 away from the first pixel electrode 8341, and the third pixel electrode 8343 extends to the drain electrode 8313 in the first opening 821 and covers at least part of the drain electrode 8313, so that the pixel electrode 834 is electrically connected to the drain electrode 8313. The third common electrode 8353 is connected to one end of the second common electrode 8352 away from the first common electrode 8351, and the third common electrode 8353 extends to the signal connection terminal 832 in the second opening 822 and covers at least part of the signal connection terminal 832, so that the common electrode 835 is electrically connected to the signal connection terminal 832.

[0061] It can be understood that by electrically connecting the pixel electrode 834 to the drain electrode 8313 and the common electrode 835 to the signal connection terminal 832, the drain electrode 8313 can transmit an electric signal to the pixel electrode 834 and the signal connection terminal 832 can transmit an electric signal to the common electrode 835, so that voltages can be applied to the pixel electrode 834 and the common electrode 835 respectively to form a driving electric field to control the movement of the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 in the accommodating space A.

[0062] Specifically, when the voltage of the common electrode 835 is greater than the voltage of the pixel electrode 834, and the first electrophoretic particles b2 and the second electrophoretic particles b3 are both positively charged, a driving electric field directed from the common electrode 835 to the pixel electrode 834 is formed, thereby driving the first electrophoretic particles b2 and the second electrophoretic particles b3 to move toward one side of the pixel electrode 834, and finally gather in the avoidance area A2 close to the side of the pixel electrode 834, so that the display light emitted by the light-emitting element 53 to the display area A1 can directly pass through the display area A1 and emit out of the display panel 1. Then, by applying a reverse voltage between the common electrode 835 and the pixel electrode 834, that is, when the voltage of the pixel electrode 834 is greater than the voltage of the common electrode 835, a driving electric field directed from the pixel electrode 834 to the common electrode 835 is formed, thereby driving the first electrophoretic particles b2 and the second electrophoretic particles b3 to move toward one side of the common electrode 835. Therefore, by controlling the size of the voltage difference between the pixel electrode 834 and the common electrode 835 and controlling the application time of the driving electric field formed between the pixel electrode 834 and the common electrode 835, the movement distance of the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 can be controlled, and finally the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 can be diffused to the entire surface of the display area A1, so that the plurality of second electrophoretic particles b3 absorb the external ambient light irradiated to the display area A1, and the plurality of first electrophoretic particles b2 reflect the display light irradiated to the display area A1 to the light-emitting component 50, and finally the display light is emitted from the peripheral side of the display area A1 out of the display panel 1.

[0063] See also Figure 1 and Figure 4 In the embodiment of the present application, the drain electrode 8313 and the signal connection terminal 832 are arranged in the same layer and are spaced apart from each other, thereby ensuring that the drain electrode 8313 and the signal connection terminal 832 can be processed through the same process and can accept control signals with different voltages.

[0064] In the embodiment of the present application, the second pixel electrode 8342 and the second common electrode 8352 are abutted against the packaging substrate 90 on the side facing away from the annular support member 833, and the side of the annular support member 833 that does not support the pixel electrode 834 or the common electrode 835 facing away from the interlayer substrate 70 is also abutted against the packaging substrate 90, so that the glass substrate 90, the annular support member 833, the pixel electrode 834, the common electrode 835 and the passivation layer 82 form a closed accommodating space A, thereby preventing the electrophoretic liquid b contained in the accommodating space A from leaking.

[0065] See also Figure 4 In the embodiment of the present application, the active layer 8311 includes a photosensitive layer 8311a, and the photosensitive layer 8311a is used to generate photogenerated carriers under the condition of light irradiation to form a conduction current, and the stronger the light irradiating the photosensitive layer 8311a, the more photogenerated carriers the photosensitive layer 8311a generates, and the greater the conduction current.

[0066] It is understandable that the more photogenerated carriers the photosensitive layer 8311a generates, the greater the on-current is, and the greater the voltage applied by the driving transistor 831 to the pixel electrode 834 is. Therefore, when the light of the external environment is weak so that the photosensitive layer 8311a generates fewer photogenerated carriers, resulting in the voltage of the pixel electrode 834 being less than the voltage of the common electrode 835, the pixel electrode 834 and the common electrode 835 will form an electric field directed from the common electrode 835 to the pixel electrode 834, thereby driving the first electrophoretic particles b2 and the second electrophoretic particles b3 to move to the avoidance area A2 close to the side of the pixel electrode 834, thereby making the display light emitted by the light-emitting element 53 to the display area A1 directly pass through the display area A1 and emit out of the display panel 1. When the external ambient light is strong enough to cause the photosensitive layer 8311a to generate more photogenerated carriers, resulting in the voltage of the pixel electrode 834 being greater than the voltage of the common electrode 835, an electric field will be formed between the pixel electrode 834 and the common electrode 835, pointing from the pixel electrode 834 to the common electrode 835, thereby driving the multiple first electrophoretic particles b2 and the multiple second electrophoretic particles b3 to move toward the common electrode 835 to diffuse to the surface of the display area A1, thereby causing the multiple second electrophoretic particles b3 to absorb the external ambient light irradiated to the display area A1, thereby reducing the influence of the external ambient light on the display light.

[0067] It can be understood that, in other embodiments, the active layer 8311 may also include a semiconductor layer, which is located on the side of the photosensitive layer 8311a facing the gate insulating layer 81, and the semiconductor layer is used to generate carriers under the action of the electric field generated by the voltage of the gate 8315, thereby increasing the signal strength output by the driving transistor 831.

[0068] In the embodiment of the present application, the material of the photosensitive layer 8311a is poly(3-hexylthiophene) (P3HT). P3HT is an organic material having both photosensitivity and semiconductor properties. In order to improve the photosensitivity of the P3HT material, [6,6]-phenylcarbon 61-butyric acid methyl ester (PCBM) may be doped therein to form a photosensitive layer 8311a of a mixed material including P3HT and PCBM.

[0069] See also Figure 4 In the embodiment of the present application, the orthographic projection of the gate 8315 on the base substrate 10 covers the orthographic projection of the active layer 8311 on the base substrate 10, that is, the orthographic projection of the active layer 8311 on the base substrate 10 is located within the orthographic projection of the gate 8315 on the base substrate 10, and the gate 8315 is used to block the display light directed to the active layer 8311.

[0070] It can be understood that by shielding the display light directed toward the active layer 8311 through the gate 8315, the display light can be prevented from being directed toward the photosensitive layer 8311a, thereby preventing the photosensitive layer 8311a from generating photogenerated carriers under the irradiation of the display light, thereby ensuring that the photogenerated carriers generated by the photosensitive layer 8311a are only related to the external ambient light.

[0071] See also Figure 5 and Figure 6 , Figure 5 A partial cross-sectional structural diagram of a display panel provided in the second embodiment of the present application, Figure 6 for Figure 5 A partial cross-sectional structural diagram of the electrophoretic assembly of the display panel shown. The display panel in the second embodiment differs from the display panel in the first embodiment only in that the electrophoretic unit 83 does not include the annular support member 833, and the passivation layer 82 is further provided with a plurality of third openings 823. For the description of the similarities between the display panel in the second embodiment and the display panel in the first embodiment, please refer to the relevant description of the display panel in the first embodiment, which will not be repeated here.

[0072] Specifically, in the embodiment of the present application, the passivation layer 82 is further provided with a plurality of third openings 823, one of the third openings 823 is located between one of the first openings 821 and one of the second openings 822, and the third openings 823 are spaced apart from the first openings 821 and the second openings 822. The inner walls opposite to the third openings 823 are used to support part of the pixel electrodes 834 and part of the common electrodes 835, that is, part of the pixel electrodes 834 and part of the common electrodes 835 are respectively provided on the inner walls on opposite sides of the third openings 823, so that the accommodation space A is located in the third openings 823. The electrophoretic liquid b is accommodated in the accommodation space.

[0073] In the embodiment of the present application, the third opening 823 penetrates the passivation layer 82 . It is understandable that in other embodiments, the third opening 823 may not penetrate the passivation layer 82 , thereby forming a groove-shaped structure in the passivation layer 82 .

[0074] In the embodiment of the present application, the first pixel electrode 8341 and the first common electrode 8351 are respectively disposed on the inner walls of the opposite sides of the third opening 823. The second pixel electrode 8342 and the second common electrode 8352 are respectively disposed on the side of the passivation layer 82 facing away from the gate insulating layer 81, and one end of the second pixel electrode 8342 is connected to the first pixel electrode 8341, and one end of the second common electrode 8352 is connected to the first common electrode 8351. The third pixel electrode 8343 is connected to one end of the second pixel electrode 8342 away from the first pixel electrode 8341, and the third pixel electrode 8343 extends to the drain electrode 8313 in the first opening 821 and covers at least a portion of the drain electrode 8313, so that the pixel electrode 834 is electrically connected to the drain electrode 8313. The third common electrode 8353 is connected to one end of the second common electrode 8352 away from the first common electrode 8351, and the third common electrode 8353 extends to the signal connection end 832 in the second opening 822 and covers at least a portion of the signal connection end 832, so that the common electrode 835 is electrically connected to the signal connection end 832.

[0075] In the embodiment of the present application, the second pixel electrode 8342 and the second common electrode 8352 are abutted against the packaging substrate 90 on the side facing away from the passivation layer 82, and the side of the passivation layer 82 that does not support the pixel electrode 834 or the common electrode 835 facing away from the interlayer substrate 70 is also abutted against the packaging substrate 90, so that the glass substrate 90, the passivation layer 82, the pixel electrode 834, the common electrode 835 and the gate insulating layer 81 form a closed accommodating space A, thereby preventing the electrophoretic liquid b contained in the accommodating space A from leaking.

[0076] It is understandable that in the embodiment of the present application, the annular support member 833 is no longer provided between the passivation layer 82 and the packaging substrate 90, thereby reducing the thickness of the display panel 1. At the same time, the plurality of first electrophoretic particles b2 and the plurality of second electrophoretic particles b3 are accommodated in the accommodation space A between the pixel electrode 834 and the common electrode 835, that is, accommodated in the third opening 823, thereby reducing the distance between the plurality of first electrophoretic particles b2 and the light-emitting component 50, thereby reducing the propagation distance of the display light between the plurality of first electrophoretic particles b2 and the light-emitting component 50, thereby reducing the energy loss of the display light in the reflection process, and improving the light extraction efficiency of the display panel 1.

[0077] See also Figure 7 and Figure 8 , Figure 7 This is a partial cross-sectional structural diagram of a display panel provided in the third embodiment of the present application. Figure 8 for Figure 7 The enlarged schematic diagram of the local structure VIII of the display panel is shown. The difference between the display panel in the third embodiment and the display panel in the second embodiment is that a plurality of fourth openings 811 are provided on the gate insulating layer 81. For the description of the similarities between the display panel in the third embodiment and the display panel in the second embodiment, please refer to the relevant description of the display panel in the second embodiment, which will not be repeated here.

[0078] Specifically, in the embodiment of the present application, the gate insulating layer 81 is provided with a plurality of fourth openings 811, and the plurality of fourth openings 811 correspond to the plurality of third openings 823 one by one. One of the fourth openings 811 is connected to one of the third openings 823, and the orthographic projection of one of the fourth openings 811 on the base substrate 10 is located between the orthographic projection of one of the driving transistors 831 on the base substrate 10 and the orthographic projection of one of the signal connection terminals 832 on the base substrate 10. Part of the inner wall of the fourth opening 811 is used to support part of the pixel electrode 834 and part of the common electrode 835, that is, part of the pixel electrode 834 and part of the common electrode 835 are respectively arranged on the inner walls of the opposite sides of the connected third opening 823 and the fourth opening 811, so that the accommodation space A is partially located in the third opening 823 and partially located in the fourth opening 811. The electrophoretic liquid b is accommodated in the accommodation space A.

[0079] In the embodiment of the present application, the fourth opening 811 passes through the gate insulating layer 81 . It is understandable that in other embodiments, the fourth opening 811 may not pass through the gate insulating layer 81 , thereby forming a groove-shaped structure in the gate insulating layer 81 .

[0080] In the embodiment of the present application, the first pixel electrode 8341 and the first common electrode 8351 are respectively arranged on the inner walls on the opposite sides of the connected third opening 823 and the fourth opening 811, that is, the first pixel electrode 8341 and the first common electrode 8351 are respectively located on the opposite sides of the accommodating space A.

[0081] In the embodiment of the present application, the second pixel electrode 8342 and the second common electrode 8352 are abutted against the packaging substrate 90 on the side facing away from the passivation layer 82, and the side of the passivation layer 82 that does not support the pixel electrode 834 or the common electrode 835 facing away from the interlayer substrate 70 is also abutted against the packaging substrate 90, so that the packaging substrate 90, the passivation layer 82, the gate insulating layer 81, the pixel electrode 834, the common electrode 835 and the interlayer substrate 70 form a closed accommodating space A, thereby preventing the electrophoretic liquid b contained in the accommodating space A from leaking.

[0082] It can be understood that by opening the fourth opening 811 connected to the third opening 823 on the gate insulating layer 81, part of the accommodating space A is located in the fourth opening 811, thereby reducing the distance between the multiple first electrophoretic particles b2 accommodated in the accommodating space A and the light-emitting component 50, thereby further reducing the propagation distance of the display light between the multiple first electrophoretic particles b2 and the light-emitting component 50 on the basis of the second embodiment, thereby reducing the energy loss of the display light in the reflection process, and improving the light output efficiency of the display panel 1.

[0083] See also Fig. 9 , Fig. 9 A partial cross-sectional structural schematic diagram of a display panel provided in the fourth embodiment of the present application. The display panel in the fourth embodiment differs from the display panel in the first embodiment only in that the electrophoretic unit 83 further includes a transparent barrier element 836. For the description of the similarities between the display panel in the fourth embodiment and the display panel in the first embodiment, please refer to the relevant description of the display panel in the first embodiment, which will not be repeated here.

[0084] Specifically, in the embodiment of the present application, the barrier element 836 is disposed in the accommodation space A and is respectively connected to the pixel electrode 834 and the common electrode 835 located on opposite sides of the accommodation space A. The barrier element 836 divides the accommodation space A into a first accommodation space a1 and a second accommodation space a2 which are not connected and are stacked. The first accommodation space a1 is disposed on the side of the barrier element 836 facing the light emitting component 50, and the second accommodation space a2 is disposed on the side of the barrier element 836 facing away from the light emitting component 50. Part of the electrophoretic medium b1 is accommodated in the first accommodation space a1, and part of the electrophoretic medium b1 is accommodated in the second accommodation space a2, and a plurality of the first electrophoretic particles b2 are accommodated in the first accommodation space a1, and a plurality of the second electrophoretic particles b3 are accommodated in the second accommodation space a2.

[0085] It can be understood that by arranging the blocking element 836 in the accommodating space A, the plurality of second electrophoretic particles b3 can always be located on the side of the plurality of first electrophoretic particles b2 facing away from the light-emitting component 50, thereby preventing the plurality of first electrophoretic particles b2 from reflecting external ambient light and preventing the plurality of second electrophoretic particles b3 from absorbing the display light.

[0086] It can be understood that the blocking element 836 can also be applied to the display panels of the second and third embodiments mentioned above. For the positional relationship and connection relationship of the blocking element 836 in the display panels of the second and third embodiments mentioned above, please refer to the relevant description of the display panel in the fourth embodiment mentioned above, which will not be repeated here.

[0087] See also Fig.10 , Fig.10 A schematic diagram of the structure of a display device provided in the fifth embodiment of the present application. In the embodiment of the present application, the display device 100 may include a display panel 1 and a housing 2, wherein the display panel 1 is disposed in the housing 2, and the light emitting side of the display panel 1 is exposed from the housing 2. The display panel 1 is used to display images.

[0088] In an exemplary embodiment, the display panel 1 may be an organic light-emitting diode (OLED) display panel 1 or a micro light-emitting diode (Micro LED) display panel 1. This application takes the display panel 1 as an OLED display panel 1 as an example for description.

[0089] It can be understood that the display device 100 can be used in electronic devices including but not limited to televisions, tablet computers, laptop computers, desktop computers, mobile phones, vehicle displays, smart watches, smart bracelets, smart glasses, road signs, etc. According to the embodiments of the present application, the specific type of the display device 100 is not particularly limited, and those skilled in the art can design it accordingly according to the specific use requirements of the display device 100, which will not be repeated here.

[0090] In an exemplary embodiment, the display device 100 may also include other necessary components and parts such as a driving board, a power board, a high-voltage board, and a key control board. Those skilled in the art may make corresponding supplements based on the specific type and actual functions of the display device 100, which will not be repeated here.

[0091] Based on the same inventive concept, the fifth embodiment of the present application also provides a method for manufacturing a display panel, which is used to manufacture the display panel in the first embodiment of the present application. For the description of the similarities between the method for manufacturing the display panel and the display stand panel in the first embodiment, please refer to the relevant description of the display panel in the first embodiment, which will not be repeated here. Fig.11 , Fig.11 This is a schematic flow chart of a method for manufacturing a display panel provided in a sixth embodiment of the present application. The method for manufacturing a display panel may include the following steps.

[0092] S10 , providing a base substrate 10 , a driving circuit layer 20 , and a planar layer 30 that are stacked.

[0093] In an exemplary embodiment, Figure 1 As shown, a base substrate 10, a driving circuit layer 20 and a flat layer 30 are provided, wherein the driving circuit layer 20 is disposed on one side of the base substrate 10, and the flat layer 30 is formed on the side of the driving circuit layer 20 that is opposite to the base substrate 10. The flat layer 30 is provided with a plurality of via holes 30a penetrating the flat layer 30, and a surface of a part of the flat layer 30 that is opposite to the driving circuit layer 20 is a curved surface.

[0094] S20 , forming a light emitting component 50 on a side of the planar layer 30 facing away from the driving circuit layer 20 .

[0095] In the implementation mode of this application, please refer to Fig.12 , Fig.12 for Fig.11 The schematic flow diagram of step 20 in the manufacturing method shown is shown. Step 20 may include the following steps.

[0096] S21 , forming a plurality of anode layers 52 on a side of the planar layer 30 facing away from the driving circuit layer 20 .

[0097] In an exemplary embodiment, Figure 1 As shown, a plurality of anode layers 52 are formed on the side of the flat layer 30 facing away from the driving circuit layer 20, and the plurality of anode layers 52 correspond to the plurality of via holes 30a one by one. Each of the anode layers 52 includes a first anode region 52a and a second anode region 52b, and the first anode region 52a is formed on the side of the flat layer 30 having a curved surface facing away from the driving circuit layer 20, so that the surface of the first anode region 52a is also a curved surface. The second anode region 52b is arranged on the peripheral side of the first anode region 52a, and a portion of the second anode region 52b is accommodated in the via hole 30a and connected to the driving circuit layer 20.

[0098] S22 , forming a pixel definition layer 51 , a plurality of light emitting elements 53 and a cathode layer 55 on a side of the plurality of anode layers 52 facing away from the planar layer 30 .

[0099] In an exemplary embodiment, Figure 1As shown, a pixel definition layer 51 is formed on the side of the anode layer 52 facing away from the planar layer 30 and on the peripheral side of the anode layer 52. The pixel definition layer 51 is provided with a plurality of receiving holes 51a exposing the anode layer 52, and the plurality of receiving holes 51a correspond to the plurality of anode layers 52. A light emitting element 53 is received in each of the receiving holes 51a, and the light emitting element 53 is electrically connected to the anode layer 52. The cathode layer 55 is formed on the side of the pixel definition layer 51 facing away from the plurality of anode layers 52 and on the side of the plurality of light emitting elements 53 facing away from the anode layer 52, and the cathode layer 55 is electrically connected to the light emitting element 53.

[0100] In an exemplary embodiment, the pixel definition layer 51 may be formed by a photolithography process or 3D printing.

[0101] S30 , forming a packaging layer 60 and an interlayer substrate 70 on a side of the light emitting component 50 facing away from the planar layer 30 .

[0102] In an exemplary embodiment, Figure 1 As shown, a packaging layer 60 and an interlayer substrate 70 are formed on the side of the light emitting component 50 facing away from the planar layer 30. The packaging layer 60 is formed on the side of the cathode layer 55 facing away from the pixel definition layer 51. The interlayer substrate 70 is disposed on the side of the packaging layer 60 facing away from the cathode layer 55.

[0103] In an exemplary embodiment, the interlayer substrate 70 may be a transparent material such as glass or flexible polyimide (PI).

[0104] S40 , forming an electrophoretic assembly 80 on a side of the interlayer substrate 70 facing away from the encapsulation layer 60 .

[0105] In the implementation mode of this application, please refer to Figure 1 , Fig.13 for Fig.11 The flowchart of step 40 in the manufacturing method is shown. The step S40 may include the following steps.

[0106] S41 , forming a gate 8315 on a side of the interlayer substrate 70 facing away from the encapsulation layer 60 .

[0107] In an exemplary embodiment, a gate 8315 is formed on a side of the interlayer substrate 70 facing away from the encapsulation layer 60 by physical vapor deposition, photolithography, and etching in sequence. The gate 8315 is generally made of metal materials such as copper, aluminum, or molybdenum.

[0108] S42 , forming a gate insulating layer 81 on the surface of the gate 8315 .

[0109] In an exemplary embodiment, a gate insulating layer 81 is formed on the surface of the gate 8315 by chemical vapor deposition, and the gate insulating layer 81 is made of silicon nitride material.

[0110] S43 , forming an active layer 8311 and a signal connection terminal 832 on a side of the gate insulating layer 81 facing away from the gate insulating layer 81 .

[0111] In an exemplary embodiment, the active layer 8311 and the signal connection terminal 832 are formed on the side of the gate insulating layer 81 facing away from the gate insulating layer 81 by chemical vapor deposition, photolithography, and etching.

[0112] S44, forming a source 8312 and a drain 8313 at both ends of the active layer 8311 and a portion of the active layer 8311 on a side facing away from the gate insulating layer 81.

[0113] In an exemplary embodiment, a source electrode 8312 and a drain electrode 8313 are formed at both ends of the active layer 8311 and a portion of the active layer 8311 facing away from the gate insulating layer 81 by chemical vapor deposition, photolithography, and etching.

[0114] S45 , forming a passivation layer 82 on the surfaces of the active layer 8311 , the source electrode 8312 , the drain electrode 8313 and the signal connection terminal 832 .

[0115] In an exemplary embodiment, a passivation layer 82 is formed on the surfaces of the active layer 8311, the source 8312, the drain 8313 and the signal connection terminal 832 by chemical vapor deposition, photolithography and etching, and a first opening 821 exposing the drain 8313 and a second opening 822 exposing the signal connection terminal 832 are opened on the side of the passivation layer 82 facing away from the active layer 8311.

[0116] S46 , disposing an annular support member 833 on a side of the passivation layer 82 facing away from the active layer 8311 .

[0117] S47, forming a pixel electrode 834 and a common electrode 835 on a partial surface of the annular support member 833 to form an accommodating space A, wherein the pixel electrode 834 is electrically connected to the drain electrode 8313, and the common electrode 835 is electrically connected to the signal connection terminal 832.

[0118] In an exemplary embodiment, a first pixel electrode 8341 and a first common electrode 8351 are formed on the inner surfaces of opposite sides of the annular support member 833, a second pixel electrode 8342 connected to the first pixel electrode 8341 and a second common electrode 8352 connected to the first common electrode 8351 are formed on the side of the annular support member 833 facing away from the passivation layer 82, and a third pixel electrode 8343 connected to the second pixel electrode 8342 and a third common electrode 8353 connected to the second common electrode 8352 are formed on the outer surfaces of opposite sides of the annular support member 833. The third pixel electrode 8343 extends into the first opening 821 and is connected to the drain electrode 8313, and the third common electrode 8353 extends into the second opening 822 and is connected to the signal connection terminal 832. An accommodation space A is formed between the first pixel electrode 8341 and the first common electrode 8351, and the orthographic projection of the accommodation space A on the base substrate 10 covers the orthographic projection of the light emitting element 53 on the base substrate 10.

[0119] In an exemplary embodiment, the pixel electrode 834 and the common electrode 835 are both indium tin oxide, which may be an ITO (Indium tin oxide) semiconductor material, and has good light transmittance and electrical conductivity.

[0120] S48, filling the accommodating space A with electrophoretic liquid b.

[0121] In an exemplary embodiment, the accommodating space A is first filled with the electrophoretic medium b1, and then a plurality of first electrophoretic particles b2 and a plurality of second electrophoretic particles b3 are added to the electrophoretic medium b1 by inkjet.

[0122] S50 , disposing a packaging substrate 90 on a side of the electrophoretic assembly 80 facing away from the interlayer substrate 70 to form a display panel 1 .

[0123] In an exemplary embodiment, a packaging substrate 90 is disposed on a side of the electrophoretic assembly 80 facing away from the interlayer substrate 70 to form a display panel 1. The second pixel electrode 8342 and the second common electrode 8352 are held against the packaging substrate 90 on a side facing away from the annular support member 833, and a portion of the annular support member 833 that does not support the pixel electrode 834 or the common electrode 835 is also held against the packaging substrate 90 on a side facing away from the passivation layer 82.

[0124] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0125] It should be understood that the application of this application is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this application still fall within the scope covered by this application.

Claims

1. A display panel, comprising a light emitting component for emitting display light, characterized in that: The display panel further includes an encapsulation layer, an interlayer substrate, an electrophoretic component and an encapsulation substrate, wherein the encapsulation layer is arranged on one side of the light-emitting component, the interlayer substrate is arranged on the side of the encapsulation layer facing away from the light-emitting component, the electrophoretic component is arranged on the side of the interlayer substrate facing away from the light-emitting component, and the encapsulation substrate is arranged on the side of the electrophoretic component facing away from the interlayer substrate; the light-emitting component includes a plurality of light-emitting elements, and the plurality of light-emitting elements are used to emit the display light; the electrophoretic component includes a gate insulating layer, a passivation layer and a plurality of electrophoretic units, the gate insulating layer is arranged on the side of the interlayer substrate facing away from the encapsulation layer, the passivation layer is arranged on the side of the gate insulating layer facing away from the interlayer substrate, the plurality of electrophoretic units correspond one-to-one to the plurality of light-emitting elements, and the plurality of electrophoretic units are located on the light-emitting side of the plurality of light-emitting elements; Each of the electrophoretic units comprises a pixel electrode, a common electrode, an electrophoretic liquid, a driving transistor and a signal connection terminal arranged at intervals, the pixel electrode and the common electrode are arranged between the interlayer substrate and the packaging substrate, the pixel electrode and the common electrode are arranged at intervals relative to each other to form a containing space, and the electrophoretic liquid is contained in the containing space; The passivation layer is provided with a first opening exposing at least part of the drain of the driving transistor, and the passivation layer is provided with a second opening exposing at least part of the signal connection terminal; the passivation layer is further provided with a plurality of third openings, one of the third openings is located between one of the second openings and one of the first openings, and the third openings are respectively arranged relative to the first openings with a spacing, and the relative parts of the inner walls of the third openings are used to support part of the pixel electrode and part of the common electrode; one end of the pixel electrode extends to the drain of the driving transistor in the first opening, so that the pixel electrode is electrically connected to the drain of the driving transistor, and one end of the common electrode extends to the signal connection terminal in the second opening, so that the common electrode is electrically connected to the signal connection terminal; The electrophoretic liquid comprises an electrophoretic medium, a plurality of first electrophoretic particles and a plurality of second electrophoretic particles, wherein the plurality of first electrophoretic particles and the plurality of second electrophoretic particles have the same polarity, the plurality of first electrophoretic particles and the plurality of second electrophoretic particles are layered in the electrophoretic medium, and the plurality of second electrophoretic particles are located on a side of the plurality of first electrophoretic particles that is opposite to the interlayer substrate; The pixel electrode and the common electrode are used to form a driving electric field, and the driving electric field is used to drive multiple first electrophoretic particles and multiple second electrophoretic particles to move toward the pixel electrode, or multiple first electrophoretic particles and multiple second electrophoretic particles to move toward the common electrode, the first electrophoretic particles are used to reflect the display light emitted by the light-emitting element to the first electrophoretic particles, and the second electrophoretic particles are used to absorb external ambient light emitted to the second electrophoretic particles.

2. The display panel according to claim 1, wherein: The display panel also includes a base substrate, a driving circuit layer and a flat layer, wherein the driving circuit layer is arranged on a side of the base substrate facing the light-emitting component, the flat layer is arranged on a side of the driving circuit layer facing away from the base substrate, and the light-emitting component is arranged on a side of the flat layer facing away from the driving circuit layer; the driving circuit layer is used to drive the light-emitting component to emit light, and the flat layer is provided with a plurality of spaced vias exposing the driving circuit layer.

3. The display panel according to claim 2, wherein: The light-emitting component further comprises a pixel definition layer, a plurality of anode layers and a cathode layer, wherein the plurality of anode layers are arranged on a side of the flat layer facing away from the driving circuit layer, and the plurality of anode layers correspond one-to-one with the plurality of via holes; at least a portion of the anode layers are accommodated in the corresponding via holes and are electrically connected to the driving circuit layer; the pixel definition layer is arranged on a side of the plurality of anode layers facing away from the flat layer and on the peripheral sides of the plurality of anode layers, a plurality of accommodation holes are provided on the anode layer to expose the plurality of anode layers, and the plurality of accommodation holes correspond one-to-one with the plurality of anode layers; a light-emitting element is accommodated in each of the accommodation holes, and the light-emitting element is electrically connected to the anode layer; the cathode layer is arranged on a side of the pixel definition layer facing away from the plurality of anode layers and is electrically connected to the light-emitting element; The encapsulation layer is arranged on a side of the cathode layer facing away from the pixel definition layer, and the encapsulation layer is used to encapsulate the light-emitting component.

4. The display panel according to claim 3, wherein: Each of the anode layers includes a first anode region and a second anode region, wherein the position of the first anode region corresponds to the position of the light-emitting element, and the first anode region is connected to one end of the light-emitting element facing the flat layer, and the second anode region is arranged on the peripheral side of the first anode region; the surface of the first anode region in contact with the light-emitting element is a curved surface convex toward the light-emitting element.

5. The display panel according to claim 3, wherein: The driving transistor comprises an active layer, a source electrode, a drain electrode and a gate electrode; the gate electrode is embedded in the gate insulating layer, the active layer, the source electrode and the drain electrode are embedded in the passivation layer, the source electrode and the drain electrode are spaced apart and arranged at opposite ends of the active layer, and are electrically connected to the active layer; The signal connection end is embedded in one end of the passivation layer away from the active layer; the passivation layer is used to protect the active layer, the source electrode, the drain electrode and the signal connection end.

6. The display panel according to claim 5, wherein: Each of the electrophoresis units further includes an annular support member, which is disposed on a side of the passivation layer facing away from the gate insulating layer, and is located between the first opening and the second opening, and is used to support the pixel electrode and the common electrode; One end of the pixel electrode extends to the drain in the first opening, so that the pixel electrode is electrically connected to the drain, and one end of the common electrode extends to the signal connection end in the second opening, so that the common electrode is electrically connected to the signal connection end.

7. The display panel according to claim 5, wherein: The gate insulating layer is provided with a plurality of fourth openings, the plurality of fourth openings correspond to the plurality of third openings one by one, and one of the fourth openings is connected to one of the third openings, and an orthographic projection of one of the fourth openings on the interlayer substrate is located between an orthographic projection of one of the driving transistors on the interlayer substrate and an orthographic projection of one of the signal connection terminals on the interlayer substrate; a portion of the inner wall of the fourth opening is used to support a portion of the pixel electrode and a portion of the common electrode; Part of the pixel electrode and part of the common electrode are respectively arranged on the inner walls of the connected third opening and the fourth opening at two opposite sides.

8. The display panel according to any one of claims 1 to 7, characterized in that: Each of the electrophoretic units also includes a transparent blocking element, which is arranged in the accommodating space and is respectively connected to the pixel electrode and the common electrode located on opposite sides of the accommodating space, and the blocking element divides the accommodating space into a first accommodating space and a second accommodating space that are not connected and are stacked, the first accommodating space is arranged on the side of the blocking element facing the light-emitting component, and the second accommodating space is arranged on the side of the blocking element facing away from the light-emitting component; part of the electrophoretic medium is accommodated in the first accommodating space, and part of the electrophoretic medium is accommodated in the second accommodating space, and a plurality of the first electrophoretic particles are accommodated in the first accommodating space, and a plurality of the second electrophoretic particles are accommodated in the second accommodating space.

9. A display device, characterized in that: It comprises a shell and a display panel as described in any one of claims 1 to 8, wherein the display panel is arranged in the shell.

Images