Display panel and display device

Abstract

The invention discloses a display panel and a display device, and the display panel comprises a substrate, a light-emitting element layer located on one side of the substrate, and an electrophoresis layer located on one side, away from the substrate, of the light-emitting element layer. The light-emitting element layer comprises a plurality of light-emitting elements arranged in an array, and the electrophoresis layer comprises a plurality of electrophoresis reflection units. The display panel comprises a luminous area and a non-luminous area, the luminous element is located in the luminous area, and the electrophoretic reflection unit is located in the non-luminous area. The electrophoretic reflection unit comprises a first electrode and a second electrode which are oppositely arranged, and electrophoretic particles positioned between the first electrode and the second electrode; the arrangement direction of the first electrodes and the second electrodes is parallel to the plane where the substrate is located. According to the display panel and the display device provided by the embodiment of the invention, the electrophoretic reflection unit is reasonably configured to reflect and recycle the large-viewing-angle light emitted by the light-emitting element, so that the light loss can be reduced, the power consumption and the aging rate of the display panel are further reduced, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] An Organic Light-Emitting Diode (OLED) display panel has advantages such as being able to emit light by itself, not requiring a backlight, having low power consumption, and high brightness, and is widely used in various electronic devices.

[0003] However, with the continuous development of products and the increasing maturity of the market, users' requirements for display panels are becoming increasingly strict, especially for key indicators such as the power consumption and lifespan of display panels, which have put forward higher standards. Summary of the Invention

[0004] The present invention provides a display panel and a display device to reduce power consumption and extend the service life.

[0005] According to one aspect of the present invention, a display panel is provided, including a substrate, a light-emitting element layer located on one side of the substrate, and an electrophoretic layer located on the side of the light-emitting element layer facing away from the substrate;

[0006] The light-emitting element layer includes a plurality of light-emitting elements arranged in an array, and the electrophoretic layer includes a plurality of electrophoretic reflection units;

[0007] The display panel includes a light-emitting area and a non-light-emitting area, the light-emitting elements are located in the light-emitting area, and the electrophoretic reflection units are located in the non-light-emitting area;

[0008] The electrophoretic reflection unit includes a first electrode and a second electrode arranged opposite to each other, and electrophoretic particles located between the first electrode and the second electrode; the arrangement direction of the first electrode and the second electrode is parallel to the plane where the substrate is located.

[0009] According to another aspect of the present invention, a display device is provided, including the display panel described in the first aspect.

[0010] The display panel and the display device according to the embodiments of the present invention, by reasonably configuring the electrophoretic reflection unit, reflect the large-angle light emitted by the light-emitting element, and can make the reflected large-angle light exit through the color resist of the same color, and the large-angle light exiting can still maintain the large-angle characteristic, which can avoid large-angle color shift and improve the brightness and color performance of the display panel under a large angle. At the same time, by reflecting and recycling the large-angle light through the electrophoretic reflection unit, the light loss can be reduced, more light can be effectively utilized, there is no need to compensate for the loss by increasing the brightness of the light-emitting element, the overall driving current is reduced, thereby effectively reducing the power consumption of the display panel, and the light-emitting element does not need to work at a high brightness for a long time, the aging rate is reduced, and the service life of the display panel is extended.

[0011] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0014] Figure 2 is Figure 1 A cross-sectional structural diagram along the A-A' direction;

[0015] Figure 3 It is a partial cross-sectional view of a display panel provided by an embodiment of the present invention;

[0016] Figure 4 It is a partial cross-sectional structural diagram of a display panel in the related art;

[0017] Figure 5 It is a partial cross-sectional view of another display panel provided by an embodiment of the present invention;

[0018] Figure 6 It is a partial cross-sectional view of yet another display panel provided by an embodiment of the present invention;

[0019] Figure 7 It is a partial cross-sectional view of yet another display panel provided by an embodiment of the present invention;

[0020] Figure 8Schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0021] Figure 9 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0022] Figure 10 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0023] Figure 11 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0024] Figure 12 Schematic structural diagram of yet another display panel provided by an embodiment of the present invention;

[0025] Figure 13 It is Figure 12 Cross-sectional structural schematic diagram along the B-B' direction;

[0026] Figure 14 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0027] Figure 15 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0028] Figure 16 Partial cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present invention;

[0029] Figure 17 Schematic structural diagram of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] Figure 1 FIG. is a schematic structural diagram of a display panel provided by an embodiment of the present invention. Figure 2 is Figure 1 A cross-sectional structural diagram along the A-A' direction, as Figure 1 and Figure 2 shown, the display panel provided by the embodiment of the present invention includes a substrate 10, a light-emitting element layer 20 located on one side of the substrate 10, and an electrophoretic layer 30 located on the side of the light-emitting element layer 20 facing away from the substrate 10. The light-emitting element layer 20 includes a plurality of light-emitting elements 200 arranged in an array, and the electrophoretic layer 30 includes a plurality of electrophoretic reflection units 300. The display panel includes a light-emitting area 40 and a non-light-emitting area 41. The light-emitting elements 200 are located in the light-emitting area 40, and the electrophoretic reflection units 300 are located in the non-light-emitting area 41. The electrophoretic reflection unit 300 includes a first electrode 301 and a second electrode 302 arranged opposite to each other, and electrophoretic particles 303 located between the first electrode 301 and the second electrode 302. The arrangement direction of the first electrode 301 and the second electrode 302 is parallel to the plane where the substrate 10 is located.

[0033] Specifically, as Figure 1 and Figure 2 shown, the substrate 10 serves as the basic support structure of the entire display panel.

[0034] The light-emitting element layer 20 includes a plurality of light-emitting elements 200 arranged in an array to realize the light-emitting function of the display panel.

[0035] Among them, the light-emitting element 200 may include an organic light-emitting diode (OLED), a micro light-emitting diode (such as Micro-LED, Mini-LED), or other types of light-emitting devices. The embodiment of the present invention does not make specific limitations on this.

[0036] Such as Figure 2As shown, taking the light-emitting element 200 as an organic light-emitting diode as an example for illustration, the light-emitting element 200 may include an anode layer 201, a light-emitting layer 202, and a cathode layer 203 which are stacked. When electrons are injected into the light-emitting layer 202 through the cathode layer 203 and holes are injected into the light-emitting layer 202 through the anode layer 201, the electrons and holes recombine in the light-emitting layer 202 to release energy, thereby causing the light-emitting layer 202 to emit visible light.

[0037] Among them, by setting different materials of the light-emitting layer 202, visible light of different colors can be emitted. For example, the light-emitting element 200 may include a red light-emitting element that emits red light, a blue light-emitting element that emits blue light, and a green light-emitting element that emits green light to achieve color image display, but it is not limited thereto. In some embodiments, the light-emitting element 200 may further include a white light-emitting element that emits white light, and the embodiments of the present invention do not make specific limitations on this.

[0038] Furthermore, Figure 3 is a partial cross-sectional schematic diagram of a display panel provided by an embodiment of the present invention. As Figure 2 and Figure 3 shown, the display panel further includes an array layer 22. The array layer 22 includes a plurality of pixel circuits 220 arranged in an array. The plurality of pixel circuits 220 are electrically connected to the plurality of light-emitting elements 200 correspondingly. The pixel circuit 220 is configured to transmit a driving current to the light-emitting element 200 under the action of signals of driving signal lines (such as scan signal lines, data signal lines, power supply signal lines, etc.) on the display panel to drive the light-emitting element 200 to emit light. Among them, the light-emitting element 200 and the pixel circuit 220 electrically connected thereto together form a sub-pixel of the display panel. The plurality of sub-pixels are arranged according to a certain rule, and by precisely controlling the brightness of different sub-pixels, the display of a complete image can be achieved.

[0039] Among them, the arrangement manners of the plurality of pixel circuits 220 and the plurality of light-emitting elements 200 can be set according to actual needs, and the embodiments of the present invention do not make specific limitations on this.

[0040] Optionally, as Figure 3 shown, the pixel circuit 220 includes at least one thin-film transistor T. Among them, the thin-film transistor T may include an active layer T1, a gate T2, and a source-drain electrode T3 which are stacked. A gate insulating layer 23 is provided between the active layer T1 and the gate T2, and an interlayer insulating layer 24 is provided between the gate T2 and the source-drain electrode T3 to electrically isolate between the gate T2 and the active layer T1, and between the gate T2 and the source-drain electrode T3, so as to ensure the normal operation of the thin-film transistor T.

[0041] Among them, the pixel circuit 220 may be a 1T1C circuit, a 2T1C circuit, a 7T1C circuit, an 8T1C circuit, or other types of pixel circuits known to those skilled in the art. The specific structure of the pixel circuit 220 can be set according to the actual requirements of the display panel, and the embodiments of the present invention do not limit this.

[0042] Further, the display panel includes a light-emitting region 40 and a non-light-emitting region 41. The light-emitting region 40 refers to the region where the light-emitting element 200 actually emits light, and the non-light-emitting region 41 refers to the non-light-emitting region of the display panel except the light-emitting region 40.

[0043] As Figure 2 shown, a pixel definition layer 21 is provided on the side of the anode layer 201 facing away from the substrate 10. A non-opening region 211 and an opening region 210 exposing the anode layer 201 are provided on the pixel definition layer 21. The light-emitting layer 202 is at least partially filled in the opening region 210 of the pixel definition layer 21 and is in contact with the anode layer 201. The cathode layer 203 is located above the pixel definition layer 21, and along the thickness direction of the substrate 10, the cathode layer 203 covers the light-emitting layer 202.

[0044] Among them, the pixel definition layer 21 is used to define the boundaries of each sub-pixel. The anode layer 201, the light-emitting layer 202, and the cathode layer 203 defined by each opening region 210 form a light-emitting element 200, and the region defined by the opening region 210 is the light-emitting region 40. The non-opening region 211 of the pixel definition layer 21 can isolate the light-emitting elements 200 from each other to effectively prevent current leakage and light crosstalk between adjacent sub-pixels, thereby improving the display quality.

[0045] Figure 4 A partial cross-sectional structural schematic diagram of a display panel in the related art is shown as Figure 4 shown. The inventor has found through research that in the related art, when the large-angle light 50 emitted by the light-emitting element 200 passes through the color filter layer 60, it may not accurately pass through the color resist 602 of the same color, but will be absorbed by the black matrix 601 or the color resist 602 of other colors and cannot be emitted. Since part of the large-angle light 50 is absorbed instead of passing through the color filter layer 60, the brightness and color performance of the display panel at large angles are poor. At the same time, in order to compensate for the absorbed large-angle light 50, the light-emitting element 200 needs to output a higher brightness, which will increase the power consumption of the entire display panel, and the higher working current and power will cause the light-emitting element 200 to age faster, thereby shortening the service life of the display panel.

[0046] Based on the above technical problems, as Figures 1 - 3As shown in the figure, in the embodiment of the present invention, an electrophoretic layer 30 is disposed on the side of the light-emitting element layer 20 away from the substrate 10. The electrophoretic layer 30 includes a plurality of electrophoretic reflection units 300, and the electrophoretic reflection units 300 are distributed in the non-light-emitting area 41, which will not affect the layout of the original light-emitting elements 200.

[0047] The electrophoretic reflection unit 300 is a special structure designed based on electrophoretic technology for reflecting light. Specifically, the electrophoretic reflection unit 300 includes a first electrode 301 and a second electrode 302 disposed opposite to each other. The arrangement directions of the first electrode 301 and the second electrode 302 are parallel to the plane where the substrate 10 is located (for example, the X direction). At this time, the plane where the first electrode 301 is located and the plane where the second electrode 302 is located are both perpendicular to the plane where the substrate 10 is located. Electrophoretic particles 303 are filled between the first electrode 301 and the second electrode 302. The electrophoretic particles 303 can have specific colors or reflection characteristics, and they can move directionally under the action of an electric field. Therefore, by applying different voltages to the first electrode 301 and the second electrode 302 to form an electric field, the electrophoretic particles 303 can be driven to move between the first electrode 301 and the second electrode 302 by the electric field. When the electrophoretic particles 303 approach one side electrode, this area will exhibit corresponding reflection characteristics (such as having a high reflectivity to light).

[0048] In the embodiment of the present invention, as Figure 2 shown, by reasonably configuring the electrophoretic reflection unit 300, the large-angle light 50 emitted by the light-emitting element 200 can be reflected by the electrophoretic reflection unit 300 and emitted through the color resistor 602 of the same color. Moreover, the emitted large-angle light 50 can still maintain the large-angle characteristic, which can avoid large-angle color deviation and improve the brightness and color performance of the display panel at a large angle. At the same time, by reflecting and recycling the large-angle light 50 through the electrophoretic reflection unit 300, the light loss can be reduced. More light can be effectively utilized, and there is no need to compensate for the loss by increasing the brightness of the light-emitting element 200, reducing the overall driving current, thereby effectively reducing the power consumption of the display panel. And the light-emitting element 200 does not need to work at a high brightness for a long time, which can reduce the aging rate and thus extend the service life of the display panel.

[0049] It should be noted that the materials of the first electrode 301 and the second electrode 302 can be made of materials with good conductivity to be able to respond quickly and effectively drive the movement of the electrophoretic particles. Among them, the materials of the first electrode 301 and the second electrode 302 can include metals (such as copper, aluminum, silver), transparent conductive oxides (such as indium tin oxide), and other new conductive materials (such as graphene, carbon nanotubes, etc.). The embodiments of the present invention do not make specific limitations on this.

[0050] In addition, a thicker electrode can provide better electrical conductivity, but if it is too thick, it may increase the electric field establishment time, resulting in a slower response speed. In the embodiments of the present invention, the thicknesses of the first electrode 301 and the second electrode 302 can be reasonably selected according to specific usage environments and technical requirements, so as to ensure sufficient electrical conductivity and achieve fast response, thereby achieving the best performance. No specific limitation is made here.

[0051] Optionally, as Figure 2 and Figure 3 shown, the display panel further includes a pixel definition layer 21 on the side of the electrophoresis layer 30 close to the substrate 10. The pixel definition layer 21 includes a non-opening area 211 and an opening area 210 corresponding to the light-emitting area 40. The light-emitting element 200 includes a light-emitting layer 202, and the light-emitting layer 202 is located within the opening area 210. The vertical projection of the electrophoresis reflection unit 300 on the pixel definition layer 21 is located within the non-opening area 211.

[0052] Among them, the specific structures of the pixel definition layer 21 and the light-emitting element 200 can refer to the above embodiments and will not be elaborated here.

[0053] In this embodiment, the electrophoresis reflection unit 300 is disposed within the vertical projection range of the non-opening area 211 of the pixel definition layer 21. At this time, the electrophoresis reflection unit 300 is located in the gap between adjacent light-emitting elements 200, which can avoid the interference of the electrophoresis reflection unit 300 on the light-emitting area 40, so that the electrophoresis reflection unit 300 does not interfere with the normal light emission of the light-emitting element 200 at a small viewing angle, ensuring the clarity and contrast of the display, and at the same time helping to reduce potential optical crosstalk problems and improve the display quality.

[0054] Optionally, as Figure 2 and Figure 3 shown, the display panel further includes a color filter layer 60 on the side of the electrophoresis layer 30 away from the substrate 10. The color filter layer 60 includes a black matrix 601 and color resistors 602 corresponding to the light-emitting elements 200. The vertical projection of the black matrix 601 on the substrate 10 covers the vertical projection of the electrophoresis reflection unit 300 on the substrate 10.

[0055] Specifically, as Figure 2 and Figure 3As shown in the figure, a color filter layer 60 is provided on the side of the electrophoresis layer 30 away from the substrate 10. The color filter layer 60 includes color resistors 602 corresponding to the light-emitting elements 200 and black matrices 601 corresponding to the gaps between adjacent light-emitting elements 200. Among them, the black matrices 601 can be used to separate sub-pixels of different colors, prevent color mixing, and absorb unnecessary light (such as the reflected light of the display panel). The color resistors 602 can filter the light emitted by the light-emitting elements 200, so that the light emitted by the light-emitting elements 200 has a purer chromaticity when exiting. Among them, the color filter layer 60 can replace the polarizer to achieve the effect of eliminating light reflection, so there is no need to set a polarizer anymore, which can reduce the process and the thickness of the display panel.

[0056] In this embodiment, the vertical projection of the black matrix 601 on the substrate 10 covers the vertical projection of the electrophoresis reflection unit 300 on the substrate 10. At this time, the black matrix 601 forms an occlusion for the electrophoresis reflection unit 300, which can avoid unnecessary light reflection or scattering caused by the electrophoresis reflection unit 300 and reduce the influence of the electrophoresis reflection unit 300 on the display effect.

[0057] Optionally, as Figure 2 and Figure 3 shown in the figure, in the electrophoresis reflection unit 300, the electrophoresis particles 303 include first electrophoresis particles 3031 and second electrophoresis particles 3032, and the polarities of the charges carried by the first electrophoresis particles 3031 and the second electrophoresis particles 3032 are opposite. In the electrophoresis reflection unit 300, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the first electrophoresis particles 3031 cover at least part of the first electrode 301; under the action of the electric field formed by the first electrode 301 and the second electrode 302, the second electrophoresis particles 3032 cover at least part of the second electrode 302.

[0058] Specifically, in the same electrophoresis reflection unit 300, there are two types of electrophoresis particles with opposite polarities of charges (such as the first electrophoresis particles 3031 and the second electrophoresis particles 3032). By controlling the voltage applied to the first electrode 301 and the second electrode 302, the movement states of different electrophoresis particles (such as the first electrophoresis particles 3031 and the second electrophoresis particles 3032) can be regulated.

[0059] Among them, the electrophoresis particles with positive charges will move towards the negative electrode and thus gather at one end of the negative electrode; the electrophoresis particles with negative charges will move towards the positive electrode and thus gather at one end of the positive electrode.

[0060] Exemplarily, when the first electrophoretic particle 3031 is positively charged and the second electrophoretic particle 3032 is negatively charged, the first electrode 301 is set to a negative potential relative to the second electrode 302. Under the action of the electric field formed by the first electrode 301 and the second electrode 302, the positively charged first electrophoretic particle 3031 will be attracted to the side of the negatively charged first electrode 301 to cover part or all of the first electrode 301; the negatively charged second electrophoretic particle 3032 will move to the side of the positively charged second electrode 302 to cover part or all of the second electrode 302.

[0061] Conversely, when the first electrophoretic particle 3031 is negatively charged and the second electrophoretic particle 3032 is positively charged, the first electrode 301 is set to a positive potential relative to the second electrode 302. Under the action of the electric field formed by the first electrode 301 and the second electrode 302, the negatively charged first electrophoretic particle 3031 will be attracted to the side of the positively charged first electrode 301 to cover part or all of the first electrode 301; the positively charged second electrophoretic particle 3032 will move to the side of the negatively charged second electrode 302 to cover part or all of the second electrode 302.

[0062] Furthermore, by making the first electrophoretic particle 3031 cover at least part of the first electrode 301 and the second electrophoretic particle 3032 cover at least part of the second electrode 302, the reflection characteristics of the regions where the first electrode 301 and the second electrode 302 are located can be changed.

[0063] For example, the first electrophoretic particle 3031 and the second electrophoretic particle 3032 have a high reflectivity. By the first electrophoretic particle 3031 and the second electrophoretic particle 3032, the reflectivity of the regions where the first electrode 301 and the second electrode 302 are located is increased, so that the large-angle light 50 emitted by the light-emitting element 200 can be reflected by the first electrophoretic particle 3031 and the second electrophoretic particle 3032, and then further emitted through the color resist 602 of the same color, reducing the absorption of the large-angle light 50 by the black matrix 601 or other color resists 602, reducing light loss, reducing power consumption, extending the service life, and improving the brightness and color performance of the display panel at a large angle.

[0064] It should be noted that when a voltage is applied to the first electrode 301 and the second electrode 302 of the electrophoretic reflection unit 300, the electrophoretic particles 303 in the electrophoretic reflection unit 300 will move to the first electrode 301 or the second electrode 302 under the action of the electric field. After the electrophoretic particles 303 move to the required positions, even if the electric field is removed, the electrophoretic particles 303 will still maintain their current positions and do not require additional energy to maintain the state, which is beneficial to reducing power consumption. Therefore, in the embodiments of the present invention, the electrophoretic reflection unit 300 is used to reflect or absorb the large-angle light 50. Only by providing a voltage to the first electrode 301 and the second electrode 302 of the electrophoretic reflection unit 300 once, the aggregation positions of the electrophoretic particles 303 in the electrophoretic reflection unit 300 can be maintained all the time, and there is no need to continuously power on to increase additional power consumption.

[0065] In addition, the voltage difference between the first electrode 301 and the second electrode 302 can be set according to actual needs. Among them, a larger voltage difference can form a stronger electric field intensity, so that the first electrophoretic particles 3031 and the second electrophoretic particles 3032 move to the corresponding electrode positions faster, and a smaller voltage difference is beneficial to reducing power consumption.

[0066] Figure 5 It is a partial cross-sectional schematic diagram of another display panel provided by the embodiments of the present invention. As Figure 5 shown, optionally, a plurality of electrophoretic reflection units 300 include a first electrophoretic reflection unit 30A, and a plurality of light-emitting elements 200 include a first light-emitting element 20A and a second light-emitting element 20B arranged adjacent to each other. Along the direction parallel to the plane where the substrate 10 is located, the first electrophoretic reflection unit 30A is located between the first light-emitting element 20A and the second light-emitting element 20B, and the arrangement direction of the first electrode 301 and the second electrode 302 in the first electrophoretic reflection unit 30A is the same as the arrangement direction between the first light-emitting element 20A and the second light-emitting element 20B.

[0067] Specifically, as Figure 1 shown, the display panel includes a display area AA and a non-display area NA arranged around the display area AA. The display area AA is the main area of the display panel for displaying images and includes all core display components such as all light-emitting elements 200 and pixel circuits 220. The non-display area NA is the peripheral area arranged around the display area AA and is used to arrange scanning driving circuits, signal lines, power lines, bonding areas, etc.

[0068] In this embodiment, the electrophoretic reflection unit 300 includes a first electrophoretic reflection unit 30A disposed in the gap region between two adjacent light-emitting elements 200 (for example, the first light-emitting element 20A and the second light-emitting element 20B). At this time, the first electrophoretic reflection unit 30A is located within the display area AA. The large-angle light rays 50 emitted by the first light-emitting element 20A and the second light-emitting element 20B can both be reflected by the first electrophoretic reflection unit 30A between them, so as to improve the light utilization efficiency.

[0069] Furthermore, as described above, the first electrophoretic particles 3031 cover at least part of the first electrode 301, and the second electrophoretic particles 3032 cover at least part of the second electrode 302, such that the regions where the first electrode 301 and the second electrode 302 are located have a high reflectivity. Then, the large-angle light rays 50 emitted by the first light-emitting element 20A and the second light-emitting element 20B can be reflected by the electrophoretic particles 303 near the electrode regions adjacent to them in the first electrophoretic reflection unit 30A.

[0070] In this embodiment, along the direction parallel to the plane where the substrate 10 is located (for example, the X direction), the arrangement direction of the first electrode 301 and the second electrode 302 in the first electrophoretic reflection unit 30A is the same as the arrangement direction between the first light-emitting element 20A and the second light-emitting element 20B, such that both the first electrode 301 and the second electrode 302 face the corresponding first light-emitting element 20A or second light-emitting element 20B. This helps to more effectively control and direct the reflection of the large-angle light rays 50 that would otherwise be absorbed, improve the utilization efficiency of the overall light rays. At the same time, it can also more efficiently utilize the space and avoid layout waste.

[0071] Optionally, as Figure 5 shown, the color of the first electrophoretic particles 3031 is the same as the light-emitting color of the first light-emitting element 20A, and the color of the second electrophoretic particles 3032 is the same as the light-emitting color of the second light-emitting element 20B.

[0072] Specifically, by setting the colors of the first electrophoretic particles 3031 and the second electrophoretic particles 3032, the first electrophoretic particles 3031 and the second electrophoretic particles 3032 can selectively reflect light of a specific color or wavelength.

[0073] Among them, the large-angle light rays 50 emitted by the first light-emitting element 20A are reflected by the first electrophoretic particles 3031. By setting the color of the first electrophoretic particles 3031 to be the same as the light-emitting color of the first light-emitting element 20A, the first electrophoretic particles 3031 can effectively reflect the large-angle light rays 50 corresponding to the light-emitting color of the first light-emitting element 20A, which helps to ensure that the large-angle light rays 50 reflected by the first electrophoretic particles 3031 maintain the original color purity and improve the color performance when viewing the image from a large-angle direction.

[0074] Similarly, the large viewing angle light 50 emitted by the second light emitting element 20B is reflected by the second electrophoretic particles 3032. By setting the color of the second electrophoretic particles 3032 to the same color as the light emitting color of the second light emitting element 20B, the second electrophoretic particles 3032 can effectively reflect the large viewing angle light 50 corresponding to the light emitting color of the second light emitting element 20B, which helps to ensure that the large viewing angle light 50 reflected by the second electrophoretic particles 3032 maintains the original color purity and improves the color performance when viewing the image from a large viewing angle direction.

[0075] Figure 6 FIG. is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention, as Figure 1 and Figure 6 shown. Exemplarily, the plurality of light emitting elements 200 may include a red light emitting element 200R that emits red light, a blue light emitting element 200B that emits blue light, and a green light emitting element 200G that emits green light to achieve color image display.

[0076] Among them, for the first electrophoretic reflection unit 30A between the red light emitting element 200R and the green light emitting element 200G, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the electrophoretic particles 303 aggregated on the side close to the red light emitting element 200R are red electrophoretic particles for reflecting red light; the electrophoretic particles 303 aggregated on the side close to the green light emitting element 200G are green electrophoretic particles for reflecting green light.

[0077] For the first electrophoretic reflection unit 30A between the green light emitting element 200G and the blue light emitting element 200B, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the electrophoretic particles 303 aggregated on the side close to the green light emitting element 200G are green electrophoretic particles for reflecting green light; the electrophoretic particles 303 aggregated on the side close to the blue light emitting element 200B are blue electrophoretic particles for reflecting blue light.

[0078] For the first electrophoretic reflection unit 30A between the blue light emitting element 200B and the red light emitting element 200R, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the electrophoretic particles 303 aggregated on the side close to the blue light emitting element 200B are blue electrophoretic particles for reflecting blue light; the electrophoretic particles 303 aggregated on the side close to the red light emitting element 200R are red electrophoretic particles for reflecting red light.

[0079] With such a setting, it can be ensured that the large viewing angle light 50 reflected by the electrophoretic particles 303 maintains the original color purity and improves the color performance when viewing the image from a large viewing angle direction.

[0080] Optionally, as Figure 1As shown, along the direction parallel to the plane where the substrate 10 is located, a first electrophoretic reflection unit 30A is provided between any two adjacent light-emitting elements 200.

[0081] Specifically, a first electrophoretic reflection unit 30A is provided in the gap between any two adjacent light-emitting elements 200 of the display panel. In this way, the large-angle light 50 that originally could not be emitted can be effectively captured and reflected within the entire display area AA, significantly improving the overall light utilization rate. At the same time, the first electrophoretic reflection units 30A are evenly distributed throughout the display area AA, which can also reduce the brightness difference between different regions and provide a more uniform display effect.

[0082] Figure 7 This is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 1 and Figure 7 shown, optionally, the display panel includes a display area AA and a non-display area NA provided around the display area AA, and the light-emitting elements 200 are located in the display area AA. The plurality of electrophoretic reflection units 300 include a second electrophoretic reflection unit 30B, and the second electrophoretic reflection unit 30B is located in the non-display area NA.

[0083] Among them, the settings of the display area AA and the non-display area NA can refer to the above embodiments and will not be elaborated here.

[0084] In this embodiment, the plurality of electrophoretic reflection units 300 include a second electrophoretic reflection unit 30B, and the second electrophoretic reflection unit 30B is located in the non-display area NA, which will not interfere with the normal display function in the display area AA.

[0085] Among them, the second electrophoretic reflection unit 30B can reflect or absorb the large-angle light 50 leaking from the edge of the display area AA, reducing the scattering or reflection of these large-angle lights 50 in the non-display area NA to reduce the edge light leakage of the display panel and avoid the visual interference of edge light leakage, thereby improving the display quality. At the same time, the reflected large-angle light 50 can be redirected to the display area AA, which can also improve the overall light utilization rate, contribute to reducing power consumption, and extending the service life.

[0086] Figure 8 This is a structural schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 1 and Figure 8 shown, optionally, the second electrophoretic reflection unit 30B is provided around the display area AA.

[0087] Specifically, as Figure 1 and Figure 8 shown, the second electrophoretic reflection unit 30B surrounds the entire display area AA, and is not only provided at the upper and lower edges of the display area AA, but also provided on the left and right sides of the display area AA. As Figure 8As shown, a continuous surrounding structure can also be formed at the four corners of the display area AA.

[0088] Among them, since the second electrophoretic reflection unit 30B surrounds the entire display area AA, it can reflect or absorb the large-angle light rays 50 leaking from the edge of the display area AA from all directions, reducing the scattering or reflection of these large-angle light rays 50 in the non-display area NA, so as to further reduce the light leakage at the edge of the display panel, avoid the visual interference caused by edge light leakage, and improve the display quality. At the same time, the reflected large-angle light rays 50 can be redirected to the display area AA, which can further improve the overall light utilization rate, reduce power consumption, and extend the service life.

[0089] Figure 9 This is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 9 shown, optionally, the color of the first electrophoretic particles 3031 in the second electrophoretic reflection unit 30B is black, and the color of the second electrophoretic particles 3032 in the second electrophoretic reflection unit 30B is black.

[0090] Among them, by setting the colors of both the first electrophoretic particles 3031 and the second electrophoretic particles 3032 in the second electrophoretic reflection unit 30B to be black, the large-angle light rays 50 leaking from the edge of the display area AA can be efficiently absorbed by the first electrophoretic particles 3031 and the second electrophoretic particles 3032, reducing the scattering or reflection of these large-angle light rays 50 in the non-display area NA, so as to prevent light leakage at the edge of the display panel, and further avoid the visual interference caused by edge light leakage, and improve the display quality.

[0091] Optionally, as Figure 1 shown, the second electrophoretic reflection unit 30B and the light-emitting elements 200 located at the edge of the display area AA are arranged in one-to-one correspondence.

[0092] As Figure 7 shown, along the direction parallel to the plane where the substrate 10 is located, the second electrode 302 of at least one second electrophoretic reflection unit 30B is located on the side of the first electrode 301 away from the display area AA. The color of the first electrophoretic particles 3031 of this second electrophoretic reflection unit 30B is the same as the light-emitting color of the corresponding light-emitting element 200, and the color of the second electrophoretic particles 3032 is black.

[0093] And / or,

[0094] As Figure 7 shown, along the direction parallel to the plane where the substrate 10 is located, the first electrode 301 of at least one second electrophoretic reflection unit 30B is located on the side of the second electrode 302 away from the display area AA. The color of the second electrophoretic particles 3032 of the second electrophoretic reflection unit 30B is the same as the light-emitting color of the corresponding light-emitting element 200, and the color of the first electrophoretic particles 3031 is black.

[0095] Specifically, as Figure 1 shown, the second electrophoretic reflection unit 30B is located in the non-display area NA of the display panel and is arranged in one-to-one correspondence with the light-emitting elements 200 at the edge of the display area AA.

[0096] Among them, the arrangement directions between the first electrode 301 and the second electrode 302 in two different second electrophoretic reflection units 30B can be the same or opposite. Moreover, the color configurations of the first electrophoretic particles 3031 and the second electrophoretic particles 3032 in the second electrophoretic reflection unit 30B can be different according to the position of the second electrophoretic reflection unit 30B and the arrangement direction between the first electrode 301 and the second electrode 302 therein.

[0097] As Figure 7 shown, in at least one second electrophoretic reflection unit 30B, the first electrode 301 is close to the display area AA, and the second electrode 302 is far from the display area AA. At this time, the color of the first electrophoretic particles 3031 is the same as that of the corresponding light-emitting element 200. Then, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the first electrophoretic particles 3031 aggregated on one side of the first electrode 301 can reflect the large-angle light 50 emitted by the corresponding light-emitting element 200, reduce the scattering or reflection of these large-angle lights 50 in the non-display area NA, and reduce the light leakage at the edge of the display panel; at the same time, the reflected large-angle light 50 can be redirected to the display area AA, further improving the overall light utilization rate, reducing power consumption, and extending the service life; moreover, the large-angle light 50 reflected by the first electrophoretic particles 3031 can also maintain the original color purity and improve the color performance when viewing the image from a large-angle direction.

[0098] Furthermore, the second electrophoretic particles 3032 are black. Then, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the second electrophoretic particles 3032 aggregated on one side of the second electrode 302 can absorb the large-angle light 50 emitted by the corresponding light-emitting element 200, reduce the scattering or reflection of these large-angle lights 50 in the non-display area NA, prevent light leakage at the edge of the display panel, and thus avoid the visual interference caused by edge light leakage and improve the display quality.

[0099] Continue to refer to Figure 7, in some embodiments, in at least one second electrophoretic reflection unit 30B, the second electrode 302 can also be arranged close to the display area AA, and the first electrode 301 is far from the display area AA. At this time, the color of the second electrophoretic particles 3032 is the same as that of the corresponding light-emitting element 200. Then, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the second electrophoretic particles 3032 aggregated on one side of the second electrode 302 can reflect the large viewing angle light 50 emitted by the corresponding light-emitting element 200, reduce the scattering or reflection of these large viewing angle lights 50 in the non-display area NA, and reduce the light leakage at the edge of the display panel; at the same time, the reflected large viewing angle light 50 can be redirected to the display area AA, which can further improve the overall light utilization rate, reduce power consumption, and extend the service life; and, the large viewing angle light 50 reflected by the second electrophoretic particles 3032 can also maintain the original color purity and improve the color performance when viewing the image from a large viewing angle direction.

[0100] Furthermore, the first electrophoretic particles 3031 are black. Then, under the action of the electric field formed by the first electrode 301 and the second electrode 302, the first electrophoretic particles 3031 aggregated on one side of the first electrode 301 can absorb the large viewing angle light 50 emitted by the corresponding light-emitting element 200, reduce the scattering or reflection of these large viewing angle lights 50 in the non-display area NA, prevent light leakage at the edge of the display panel, and thus avoid the visual interference of edge light leakage and improve the display quality.

[0101] It should be noted that, as Figure 7 shown, the second electrode 302 in some second electrophoretic reflection units 30B can be arranged on the side where the first electrode 301 is far from the display area AA, and the first electrode 301 in some second electrophoretic reflection units 30B can be arranged on the side where the second electrode 302 is far from the display area AA. At this time, in the direction parallel to the plane of the substrate 10 (for example, the X direction), the arrangement directions of the first electrode 301 and the second electrode 302 in the second electrophoretic reflection units 30B on the opposite sides of the display area AA can be the same, which is beneficial to improving the overall uniformity and visual consistency of the display panel.

[0102] Figure 10 This is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 10 shown, optionally, the second electrode 302 in all second electrophoretic reflection units 30B can be arranged on the side where the first electrode 301 is far from the display area AA.

[0103] Figure 11 This is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 11As shown, optionally, the first electrodes 301 in all the second electrophoretic reflection units 30B can also be arranged on the side of the second electrodes 302 away from the display area AA.

[0104] With such an arrangement, it is convenient to connect the second electrophoretic reflection units 30B located on opposite sides of the display area AA. Among them, the first electrodes 301 in the second electrophoretic reflection units 30B located on opposite sides of the display area AA can be connected in common or in series, and the second electrodes 302 in the second electrophoretic reflection units 30B located on opposite sides of the display area AA can be connected in common or in series, forming the second electrophoretic reflection units 30B arranged to surround the display area AA (for example, the second electrophoretic reflection units 30B as Figure 8 shown). Thus, the large-angle light rays 50 leaking from the edge of the display area AA can be reflected or absorbed from all directions, reducing the scattering or reflection of these large-angle light rays 50 in the non-display area NA and reducing the light leakage at the edge of the display panel. At the same time, the reflected large-angle light rays 50 can be redirected to the display area AA, which can further improve the overall light utilization rate, reduce power consumption, and extend the service life.

[0105] Figure 12 FIG. is a schematic structural diagram of another display panel provided by an embodiment of the present invention. Figure 13 is Figure 12 a schematic cross-sectional structural diagram along the B-B' direction, as Figure 12 and Figure 13 shown, optionally, the plurality of electrophoretic reflection units 300 include a first electrophoretic reflection unit 30A and a second electrophoretic reflection unit 30B. The plurality of light-emitting elements 200 include a first light-emitting element 20A and a second light-emitting element 20B arranged adjacent to each other. Along the direction parallel to the plane where the substrate 10 is located, the first electrophoretic reflection unit 30A is located between the first light-emitting element 20A and the second light-emitting element 20B. The display panel includes a display area AA and a non-display area NA surrounding the display area AA. The light-emitting elements 200 are located in the display area AA, and the second electrophoretic reflection units 30B are located in the non-display area NA. The width of the first electrophoretic reflection unit 30A in the arrangement direction of its first electrode 301 and second electrode 302 is d1, and the width of the second electrophoretic reflection unit 30B in the arrangement direction of its first electrode 301 and second electrode 302 is d2, where d2≥d1.

[0106] Among them, the specific arrangement structures of the first electrophoretic reflection unit 30A, the second electrophoretic reflection unit 30B, the display area AA, and the non-display area NA can refer to the above embodiments and will not be elaborated here.

[0107] In this embodiment, as Figure 12 and Figure 13As shown, the width d1 of the first electrophoretic reflection unit 30A in the arrangement direction (e.g., the X direction) of its first electrode 301 and second electrode 302 is less than or equal to the width d2 of the second electrophoretic reflection unit 30B in the arrangement direction (e.g., the X direction) of its first electrode 301 and second electrode 302. By setting the first electrophoretic reflection unit 30A to have a smaller width d1, the occupied space of the first electrophoretic reflection unit 30A in the display area AA can be reduced, thereby reducing the impact of the first electrophoretic reflection unit 30A on the pixel density and facilitating the improvement of the resolution.

[0108] At the same time, by setting the second electrophoretic reflection unit 30B to have a larger width d2, the second electrophoretic reflection unit 30B can accommodate more electrophoretic particles 303, so that it can more effectively absorb or reflect large-angle light 50, reduce light leakage at the edge of the display panel, and improve the display quality. At the same time, the reflected large-angle light 50 can be redirected to the display area AA, which can further improve the overall light utilization rate, reduce power consumption, and extend the service life.

[0109] Continue to refer to Figures 1 - 3 、and Figures 5 - 13 Optionally, the first electrodes 301 between different electrophoretic reflection units 300 are electrically connected, and the second electrodes 302 between different electrophoretic reflection units 300 are electrically connected.

[0110] Among them, by connecting the first electrodes 301 in all electrophoretic reflection units 300 to form a unified electrode network, and connecting the second electrodes 302 in all electrophoretic reflection units 300 to form another unified electrode network, only a pair of voltage signals are needed to control all electrophoretic reflection units 300, instead of separately configuring voltage signals for each electrophoretic reflection unit 300. In this way, the number of signal lines required to introduce voltage signals can be reduced, and the wiring difficulty and cost can be lowered.

[0111] Continue to refer to Figures 1 - 3 、and Figures 5 - 13 Optionally, the display panel further includes a first electrode connection layer 304 and a second electrode connection layer 305. The plane where the first electrode connection layer 304 is located is parallel to the plane where the substrate 10 is located, the plane where the second electrode connection layer 305 is located is parallel to the plane where the substrate 10 is located, and the first electrode connection layer 304 and the second electrode connection layer 305 are respectively located on opposite sides of the electrophoretic layer 30. The first electrodes 301 of different electrophoretic reflection units 300 are all electrically connected to the first electrode connection layer 304, and the second electrodes 302 of different electrophoretic reflection units 300 are all electrically connected to the second electrode connection layer 305.

[0112] Specifically, along the thickness direction of the display panel, a first electrode connection layer 304 is disposed on one side of the electrophoresis layer 30. The first electrodes 301 of all the electrophoresis reflection units 300 are electrically connected to the first electrode connection layer 304. Thus, a voltage signal can be provided to the first electrodes 301 of all the electrophoresis reflection units 300 through the first electrode connection layer 304, without the need to separately configure signal lines for transmitting voltage signals for the first electrodes 301 of each electrophoresis reflection unit 300. In this way, the number of signal lines required to introduce voltage signals can be reduced, and the wiring difficulty and cost can be lowered.

[0113] Meanwhile, along the thickness direction of the display panel, a second electrode connection layer 305 is disposed on the other side of the electrophoresis layer 30. The second electrodes 302 of all the electrophoresis reflection units 300 are electrically connected to the second electrode connection layer 305. Thus, a voltage signal can be provided to the second electrodes 302 of all the electrophoresis reflection units 300 through the second electrode connection layer 305, without the need to separately configure signal lines for transmitting voltage signals for the second electrodes 302 of each electrophoresis reflection unit 300. In this way, the number of signal lines required to introduce voltage signals can be reduced, and the wiring difficulty and cost can be lowered.

[0114] Among them, the first electrode connection layer 304 and the second electrode connection layer 305 are respectively located on opposite sides of the electrophoresis layer 30, which can disperse the wiring pressure and is easy to implement.

[0115] In addition, the first electrode connection layer 304 and the second electrode connection layer 305 can be prepared by a deposition process (such as physical vapor deposition, etc.). The first electrode connection layer 304 is parallel to the plane where the substrate 10 is located, which is convenient for connecting the first electrodes 301 of all the electrophoresis reflection units 300; the plane where the second electrode connection layer 305 is located is parallel to the plane where the substrate 10 is located, which is convenient for connecting the second electrodes 302 of all the electrophoresis reflection units 300.

[0116] Exemplarily, as Figures 1 - 3 and Figures 5 - 13 shown, the first electrode connection layer 304 can be disposed on the side of the electrophoresis layer 30 away from the substrate 10, and the second electrode connection layer 305 is disposed on the side of the electrophoresis layer 30 close to the substrate 10.

[0117] Figure 14 FIG. is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 14 shown, optionally, the first electrode connection layer 304 can also be disposed on the side of the electrophoresis layer 30 close to the substrate 10, and the second electrode connection layer 305 is disposed on the side of the electrophoresis layer 30 away from the substrate 10. The embodiment of the present invention does not make specific limitations in this regard.

[0118] It should be noted that, the greater the thickness of the first electrode connection layer 304 and the second electrode connection layer 305, the better the conductivity, but it is not conducive to the thin and light design of the display panel; the smaller the thickness of the first electrode connection layer 304 and the second electrode connection layer 305, the more conducive to the thin and light design of the display panel, but the conductivity will decrease. In the embodiments of the present invention, the thickness of the first electrode connection layer 304 and the second electrode connection layer 305 can be set according to actual needs, and the embodiments of the present invention do not make specific limitations in this regard.

[0119] Continue to refer to Figures 1 - 3 、and Figures 5 - 13 , optionally, the electrophoresis layer 30 is disposed adjacent to the light-emitting element layer 20. The light-emitting element 200 includes an anode layer 201, a light-emitting layer 202, and a cathode layer 203 that are sequentially stacked on one side of the substrate 10. One of the first electrode connection layer 304 and the second electrode connection layer 305 is the same film layer as the cathode layer 203.

[0120] Among them, the specific structure of the light-emitting element 200 can refer to the above embodiments and will not be elaborated here.

[0121] In this embodiment, along the thickness direction of the display panel, the electrophoresis layer 30 is disposed adjacent to the light-emitting element layer 20, which is convenient for connecting the first electrode 301 or the second electrode 302 of all the electrophoresis reflection units 300 to the cathode layer 203, so as to use the cathode layer 203 as the first electrode connection layer 304 or the second electrode connection layer 305. In this way, the number of film layers can be reduced, the manufacturing process can be simplified, and the production cost can be reduced.

[0122] Among them, as Figures 1 - 3 、and Figures 5 - 13 shown, the second electrode 302 of all the electrophoresis reflection units 300 can be connected to the cathode layer 203 to use the cathode layer 203 as the second electrode connection layer 305. At this time, the second electrode connection layer 305 and the cathode layer 203 are the same film layer, so as to reduce the number of film layers, simplify the manufacturing process, and reduce the production cost.

[0123] Continue to refer to Figure 14 , optionally, the first electrode 301 of all the electrophoresis reflection units 300 is connected to the cathode layer 203 to use the cathode layer 203 as the first electrode connection layer 304. At this time, the first electrode connection layer 304 and the cathode layer 203 are the same film layer, so as to reduce the number of film layers, simplify the manufacturing process, and reduce the production cost.

[0124] Continue to refer to Figures 1 - 3 、and Figures 5 - 14 , optionally, the display panel further includes a touch layer 70 located on the side of the light-emitting element layer 20 away from the substrate 10, and the electrophoresis layer 30 is disposed adjacent to the touch layer 70.

[0125] Specifically, a thin film encapsulation layer 71 (Thin Film Encapsulation, TFE) is provided on the side of the light emitting element layer 20 away from the substrate 10, and the thin film encapsulation layer 71 is used to protect the light emitting element layer 20 from water and oxygen. Optionally, the thin film encapsulation layer 71 may include a three-layer structure of inorganic layer / organic layer / inorganic layer, which isolates water vapor while having the advantages of being light, thin, and flexible.

[0126] Furthermore, a touch layer 70 is disposed on the side of the thin film encapsulation layer 71 away from the substrate 10 to form a TPOT (TP on TFE) embedded touch structure to achieve the touch function. Compared with the external touch structure, the overall thickness of the touch display module can be reduced and the manufacturing cost can be reduced.

[0127] The touch layer 70 is provided with a touch signal line for connecting the touch electrode with a touch panel IC (TPIC) or a touch and display driver integration IC (TDDIC) to realize touch driving and touch sensing.

[0128] In this embodiment, in the thickness direction of the display panel, the electrophoretic layer 30 and the touch layer 70 are arranged adjacent to each other, so that the voltage signal line electrically connected to the first electrode 301 or the second electrode 302 in the electrophoretic reflection unit 300 is arranged in the same layer as the touch signal line, or the touch signal line in the touch layer 70 is directly electrically connected to the first electrode 301 or the second electrode 302 in the electrophoretic reflection unit 300, so as to provide a voltage signal to the first electrode 301 or the second electrode 302 of the electrophoretic reflection unit 300 through the voltage signal line or the touch signal line, thereby reducing the number of film layers, reducing the thickness, simplifying the manufacturing process, and reducing the production cost. Further, the voltage signal can be provided by a touch panel IC (TPIC) or a touch and display driver integration IC (TDDIC), that is, the electrophoretic reflection unit 300 is driven by the TPIC or TDDIC, thereby reducing the additional pins and wiring area.

[0129] Continue to refer Figures 1 - 3 ,as well as Figures 5 - 14 Optionally, the electrophoretic layer 30 is located between the light emitting element layer 20 and the touch layer 70 , and one of the first electrode connecting layer 304 and the second electrode connecting layer 305 is disposed on a surface of the touch layer 70 close to a side of the substrate 70 .

[0130] Specifically, in the thickness direction of the display panel, the electrophoretic layer 30 is disposed between the light-emitting element layer 20 and the touch layer 70, facilitating the connection of the first electrode 301 or the second electrode 302 of all the electrophoretic reflection units 300 to the cathode layer 203, so as to utilize the cathode layer 203 as the first electrode connection layer 304 or the second electrode connection layer 305, thereby reducing the number of film layers, simplifying the manufacturing process, and reducing the production cost.

[0131] Meanwhile, in the thickness direction of the display panel, the distance between the electrophoretic layer 30 and the light-emitting element layer 20 is relatively close, which is also conducive to the second electrophoretic reflection unit 30B reflecting or absorbing the large-angle light 50 leaking from the edge of the display area AA, reducing the scattering or reflection of these large-angle lights 50 in the non-display area NA, so as to reduce the edge light leakage of the display panel, avoid the visual interference caused by the edge light leakage, and improve the display quality. In addition, the reflected large-angle light 50 can be redirected to the display area AA, which can also improve the overall light utilization rate, contribute to reducing power consumption, and extending the service life.

[0132] Furthermore, one of the first electrode connection layer 304 or the second electrode connection layer 305 is disposed on the surface of the touch layer 70 close to the substrate 70, facilitating the co-layer layout of the voltage signal line connecting the first electrode connection layer 304 or the second electrode connection layer 305 with the touch signal line on the touch layer 70, or directly connecting the touch signal line in the touch layer 70 to the first electrode connection layer 304 or the second electrode connection layer 305, so as to provide a voltage signal to the first electrode connection layer 304 or the second electrode connection layer 305 through the voltage signal line or the touch signal line. In this way, the number of film layers can be reduced, the thickness can be decreased, the manufacturing process can be simplified, and the production cost can be reduced. At the same time, the voltage signal can be provided by a touch integrated circuit (Touch Panel IC, TPIC) or a touch and display driver integration integrated circuit (Touch and Display Driver Integration IC, TDDIC), that is, using the TPIC or TDDIC to drive the electrophoretic reflection unit 300, thereby reducing the additional pins and wiring area.

[0133] Figure 15 FIG. is a partial cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention. As Figure 15 shown, optionally, the electrophoretic layer 30 is located on the side of the touch layer 70 facing away from the substrate 10, and one of the first electrode connection layer 304 and the second electrode connection layer 305 is disposed on the surface of the touch layer 70 facing away from the substrate 10.

[0134] Among them, as Figure 15As shown, the electrophoresis layer 30 is disposed on the touch layer 70, facilitating the co-layer layout on the touch layer 70 of voltage signal lines for electrically connecting the first electrode 301 or the second electrode 302 in the electrophoresis reflection unit 300 with the touch signal lines, or directly electrically connecting the touch signal lines in the touch layer 70 with the first electrode 301 or the second electrode 302 in the electrophoresis reflection unit 300, so as to provide a voltage signal to the first electrode 301 or the second electrode 302 in the electrophoresis reflection unit 300 through the voltage signal lines or the touch signal lines. In this way, the number of film layers can be reduced, the thickness can be decreased, the manufacturing process can be simplified, and the production cost can be lowered. Meanwhile, the voltage signal can be provided by a touch integrated circuit (Touch Panel IC, TPIC) or a touch and display driver integrated circuit (Touch and Display Driver Integration IC, TDDIC), that is, the TPIC or TDDIC is utilized to drive the electrophoresis reflection unit 300, thereby reducing the number of additional pins and the wiring area.

[0135] Optionally, as Figure 15 shown, the display panel further includes a color filter layer 60 located on the side of the touch layer 70 away from the substrate 10, and the electrophoresis layer 30 is located between the touch layer 70 and the color filter layer 60. One of the first electrode connection layer 304 and the second electrode connection layer 305 is disposed on the surface of the touch layer 70 facing away from the substrate 10, and the other is disposed on the surface of the color filter layer 60 close to the substrate 10.

[0136] Among them, the specific structure of the color filter layer 60 can refer to the above embodiments and will not be elaborated here.

[0137] In this embodiment, the electrophoresis layer 30 is disposed on the side of the color filter layer 60 close to the substrate 10, facilitating the electrophoresis reflection unit 300 in the electrophoresis layer 30 to reflect the large-angle light 50 to the color resistor 602 of the corresponding color in the color filter layer 60, so that the reflected large-angle light 50 exits through the color resistor 602 of the same color. Thus, more light can be effectively utilized, the overall light utilization rate can be improved, which helps to reduce power consumption and extend the service life.

[0138] Further, one of the first electrode connection layer 304 and the second electrode connection layer 305 is disposed on the surface of the touch layer 70 facing away from the substrate 10, facilitating the co-layer layout of the voltage signal line connecting the first electrode connection layer 304 or the second electrode connection layer 305 with the touch signal line on the touch layer 70, or directly connecting the touch signal line in the touch layer 70 to the first electrode connection layer 304 or the second electrode connection layer 305, so as to provide a voltage signal to the first electrode connection layer 304 or the second electrode connection layer 305 through the voltage signal line or the touch signal line. In this way, the number of film layers can be reduced, the thickness can be decreased, the manufacturing process can be simplified, and the production cost can be lowered. Meanwhile, the voltage signal can be provided by a touch integrated circuit (Touch Panel IC, TPIC) or a touch and display driver integrated circuit (Touch and Display Driver Integration IC, TDDIC), that is, the TPIC or TDDIC is used to drive the electrophoretic reflection unit 300, thereby reducing the number of additional pins and the wiring area.

[0139] Meanwhile, the other of the first electrode connection layer 304 and the second electrode connection layer 305 is disposed on the surface of the color filter layer 60 close to the substrate 10 side, such that the first electrode connection layer 304 and the second electrode connection layer 305 are respectively disposed on opposite sides of the electrophoretic layer 30, which can disperse the wiring pressure and is easy to implement.

[0140] Meanwhile, a layer of conductive material is deposited on the side of the color filter layer 60 close to the substrate 10 as the first electrode connection layer 304 or the second electrode connection layer 305, which has strong compatibility with the existing manufacturing process and will not significantly increase the manufacturing difficulty.

[0141] Optionally, as Figure 15 shown, the first electrode connection layer 304 can be disposed on the surface of the color filter layer 60 close to the substrate 10 side, and the second electrode connection layer 305 can be disposed on the surface of the touch layer 70 facing away from the substrate 10 side.

[0142] Figure 16 Another partial cross-sectional schematic diagram of the display panel provided by the embodiment of the present invention is shown in Figure 16 shown, the second electrode connection layer 305 can also be disposed on the surface of the color filter layer 60 close to the substrate 10 side, and the first electrode connection layer 304 can be disposed on the surface of the touch layer 70 facing away from the substrate 10 side. The embodiment of the present invention does not make specific limitations thereto.

[0143] Continue to refer to Figures 1 - 3 and Figures 5 - 16, Optionally, the electrophoretic reflection unit 300 further includes a first insulating barrier layer 306 and a second insulating barrier layer 307. The first insulating barrier layer 306 is located between the electrophoretic particles 303 and the first electrode connection layer 304, and between the second electrode 302 and the first electrode connection layer 304. The second insulating barrier layer 307 is located between the electrophoretic particles 303 and the second electrode connection layer 305, and between the first electrode 301 and the second electrode connection layer 305.

[0144] Specifically, as Figures 1 - 3 , and Figures 5 - 16 shown, the first insulating barrier layer 306 is located between the electrophoretic particles 303 and the first electrode connection layer 304, and is used to ensure that the electrophoretic particles 303 do not directly contact the first electrode connection layer 304, so that electrical isolation is achieved between the electrophoretic particles 303 and the first electrode connection layer 304, and to prevent the electrophoretic particles 303 from aggregating on the first electrode connection layer 304 and affecting the reflection or absorption of the large-angle light 50.

[0145] At the same time, the first insulating barrier layer 306 is also disposed between the second electrode 302 and the first electrode connection layer 304, and is used to ensure that the second electrode 302 does not directly contact the first electrode connection layer 304, so that electrical isolation is achieved between the second electrode 302 and the first electrode connection layer 304, and to prevent a short circuit between the second electrode 302 and the first electrode connection layer 304.

[0146] Continuing to refer to Figures 1 - 3 , and Figures 5 - 16 , the second insulating barrier layer 307 is located between the electrophoretic particles 303 and the second electrode connection layer 305, and is used to ensure that the electrophoretic particles 303 do not directly contact the second electrode connection layer 305, so that electrical isolation is achieved between the electrophoretic particles 303 and the second electrode connection layer 305, and to prevent the electrophoretic particles 303 from aggregating on the second electrode connection layer 305 and affecting the reflection or absorption of the large-angle light 50.

[0147] At the same time, the second insulating barrier layer 307 is also disposed between the first electrode 301 and the second electrode connection layer 305, and is used to ensure that the first electrode 301 does not directly contact the second electrode connection layer 305, so that electrical isolation is achieved between the first electrode 301 and the second electrode connection layer 305, and to prevent a short circuit between the first electrode 301 and the second electrode connection layer 305.

[0148] Optionally, the first insulating barrier layer 306 and the second insulating barrier layer 307 may be made of inorganic insulating materials such as silicon nitride (SiN x ) or silicon oxide (SiO2), so as to have excellent insulating properties and chemical stability, and at the same time can maintain a high transparency, reducing the impact on the display effect, but it is not limited thereto, and the embodiments of the present invention do not make specific limitations in this regard.

[0149] In addition, the greater the thickness of the first insulating barrier layer 306 and the second insulating barrier layer 307, the better the insulating performance; the smaller the thickness of the first insulating barrier layer 306 and the second insulating barrier layer 307, the more conducive it is to the thinning design of the display panel. The specific thickness of the first insulating barrier layer 306 and the second insulating barrier layer 307 can be set according to actual requirements, and the embodiments of the present invention do not make specific limitations thereon.

[0150] Continue to refer to Figure 1 and Figure 2 , optionally, the plurality of electrophoretic reflection units 300 are arranged in an array. Among the plurality of electrophoretic reflection units 300 arranged in the row direction, the arrangement directions of the first electrode 301 and the second electrode 302 are the same; among the plurality of electrophoretic reflection units arranged in the column direction, the arrangement directions of the first electrode 301 and the second electrode 302 are the same.

[0151] Specifically, as Figure 1 and Figure 2 shown, in the same row of electrophoretic reflection units 300, the arrangement directions of the first electrode 301 and the second electrode 302 are the same. For example, as Figure 2 shown, if the first electrode 301 is located on the left side and the second electrode 302 is located on the right side, then the first electrode 301 and the second electrode 302 in all the electrophoretic reflection units 300 in the whole row follow this layout. Among them, since the arrangement directions of the first electrode 301 and the second electrode 302 in the row direction are consistent, the electric field distribution of the whole row of electrophoretic reflection units 300 is more uniform, which can ensure that the electrophoretic particles 303 can move in a consistent electric field environment, improving the consistency and stability of the electrophoretic reflection units 300.

[0152] Similarly, in the same column of electrophoretic reflection units 300, the arrangement directions of the first electrode 301 and the second electrode 302 are the same, so that the electric field distribution of the whole column of electrophoretic reflection units 300 is more uniform, which can ensure that the electrophoretic particles 303 can move in a consistent electric field environment, improving the consistency and stability of the electrophoretic reflection units 300.

[0153] At the same time, the consistency of the electrode arrangement direction helps to more easily achieve precise alignment during the manufacturing process, reducing the product defect rate caused by alignment errors.

[0154] In other embodiments, among the plurality of electrophoretic reflection units 300 arranged in the row direction, there may also be at least two electrophoretic reflection units 300 in which the arrangement directions of the first electrode 301 and the second electrode 302 are different; among the plurality of electrophoretic reflection units arranged in the column direction, there may also be at least two electrophoretic reflection units 300 in which the arrangement directions of the first electrode 301 and the second electrode 302 are different, and the embodiments of the present invention do not make specific limitations thereon.

[0155] Optionally, the materials of the first electrode connection layer 304 and the second electrode connection layer 305 are both conductive transparent materials.

[0156] Since both the first electrode connection layer 304 and the second electrode connection layer 305 are located on the side of the light-emitting element layer 20 away from the substrate 10, the materials of the first electrode connection layer 304 and the second electrode connection layer 305 are set as conductive transparent materials, so as to have good electrical conductivity, ensure signal transmission, while reducing the influence on the display color and light transmittance, which is beneficial to ensuring the display effect.

[0157] Optionally, the materials of the first electrode connection layer 304 and the second electrode connection layer 305 may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), etc., so as to have good electrical conductivity and transparency at the same time, but not limited thereto.

[0158] In other embodiments, the first electrode connection layer 304 and the second electrode connection layer 305 may also adopt a grid structure. The grid traces of the grid structure are located in the non-light-emitting area 41. In the thickness direction of the display panel, the mesh holes of the grid structure cover the light-emitting area 40, so that the first electrode connection layer 304 and the second electrode connection layer 305 will not block the light-emitting area 40, thereby reducing the influence of the first electrode connection layer 304 and the second electrode connection layer 305 on the display effect of the display area AA.

[0159] It should be noted that when the first electrode connection layer 304 and the second electrode connection layer 305 adopt a grid structure, the materials of the first electrode connection layer 304 and the second electrode connection layer 305 may include at least one of copper (Cu), aluminum (Al), molybdenum (Mo), gold (Au), niobium (Nb) and titanium (Ti), that is, the materials of the first electrode connection layer 304 and the second electrode connection layer 305 can be any one of the above materials, or an alloy of any two or more of the above materials, so as to achieve good electrical conductivity, but not limited thereto.

[0160] Continue to refer to Figure 2 , optionally, the thickness of the electrophoresis layer 30 is H1, where 1 μm ≤ H1 ≤ 2 μm.

[0161] If the thickness of the electrophoresis layer 30 is too large, it is not conducive to the thin and light design of the display panel; if the thickness of the electrophoresis layer 30 is too small, it may cause insufficient mechanical strength of the electrophoresis reflection unit 300 and is easy to be damaged.

[0162] In this embodiment, by setting the thickness H1 of the electrophoresis layer 30 to be 1 μm to 2 μm, while ensuring the functional reliability and stability of the electrophoresis layer 30, the influence on the thickness of the display panel can be reduced, meeting the thin and light design of the display panel.

[0163] Exemplarily, the thickness H1 of the electrophoresis layer 30 can be set to 1.5 μm, so as to reduce the influence on the thickness of the display panel while ensuring the functional reliability and stability of the electrophoresis layer 30. However, it is not limited thereto, and the specific thickness H1 can be set according to actual requirements, and the embodiments of the present invention do not make specific limitations thereon.

[0164] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Figure 17 It is a schematic structural diagram of a display device provided by an embodiment of the present invention. As Figure 17 shown, the display device 80 includes the display panel 81 described in any embodiment of the present invention. Therefore, the display device 80 provided by the embodiment of the present invention has the technical effects of the technical solutions in any of the above embodiments, and the same or corresponding structures and the explanations of terms as those in the above embodiments will not be described herein again.

[0165] The display device 80 provided by the embodiment of the present invention can be Figure 17 the mobile phone shown, or any electronic product with a display function, including but not limited to the following categories: television sets, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations thereon.

[0166] The above specific implementation manners do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display panel, characterized in that, It includes a substrate, a light-emitting element layer located on one side of the substrate, and an electrophoretic layer located on the side of the light-emitting element layer away from the substrate; The light-emitting element layer includes a plurality of light-emitting elements arranged in an array, and the electrophoretic layer includes a plurality of electrophoretic reflection units; The display panel includes a light-emitting area and a non-light-emitting area. The light-emitting elements are located in the light-emitting area, and the electrophoretic reflection units are located in the non-light-emitting area; The electrophoretic reflection unit includes a first electrode and a second electrode arranged opposite to each other, and electrophoretic particles located between the first electrode and the second electrode; the arrangement direction of the first electrode and the second electrode is parallel to the plane where the substrate is located.

2. The display panel according to claim 1, wherein The display panel further includes a pixel definition layer located on the side of the electrophoretic layer close to the substrate; The pixel definition layer includes a non-opening area and an opening area corresponding to the light-emitting area; The light-emitting element includes a light-emitting layer, and the light-emitting layer is located in the opening area; The vertical projection of the electrophoretic reflection unit on the pixel definition layer is located in the non-opening area.

3. The display panel according to claim 1, wherein The display panel further includes a color filter layer located on the side of the electrophoretic layer away from the substrate; The color filter layer includes a black matrix and color resistors corresponding to the light-emitting elements; The vertical projection of the black matrix on the substrate covers the vertical projection of the electrophoretic reflection unit on the substrate.

4. The display panel according to claim 1, wherein In the electrophoretic reflection unit, the electrophoretic particles include first electrophoretic particles and second electrophoretic particles, and the polarities of the charges carried by the first electrophoretic particles and the second electrophoretic particles are opposite; In the electrophoretic reflection unit, under the action of the electric field formed by the first electrode and the second electrode, the first electrophoretic particles cover at least part of the first electrode; under the action of the electric field formed by the first electrode and the second electrode, the second electrophoretic particles cover at least part of the second electrode.

5. The display panel according to claim 4, wherein A plurality of the electrophoretic reflection units include a first electrophoretic reflection unit; A plurality of the light-emitting elements include a first light-emitting element and a second light-emitting element arranged adjacent to each other; Along the direction parallel to the plane where the substrate is located, the first electrophoretic reflection unit is located between the first light-emitting element and the second light-emitting element, and the arrangement direction of the first electrode and the second electrode in the first electrophoretic reflection unit is the same as the arrangement direction between the first light-emitting element and the second light-emitting element.

6. The display panel according to claim 5, wherein The color of the first electrophoretic particles is the same as the light-emitting color of the first light-emitting element; the color of the second electrophoretic particles is the same as the light-emitting color of the second light-emitting element.

7. The display panel according to claim 5, wherein Along the direction parallel to the plane where the substrate is located, a first electrophoretic reflection unit is provided between any two adjacent light-emitting elements.

8. The display panel according to claim 4, wherein the display panel includes a display area and a non-display area disposed around the display area, and the light-emitting element is located in the display area; a plurality of the electrophoretic reflection units include second electrophoretic reflection units; the second electrophoretic reflection units are located in the non-display area.

9. The display panel according to claim 8, wherein the second electrophoretic reflection units are disposed around the display area.

10. The display panel according to claim 8, wherein the color of the first electrophoretic particles in the second electrophoretic reflection unit is black; the color of the second electrophoretic particles in the second electrophoretic reflection unit is black.

11. The display panel according to claim 8, wherein the second electrophoretic reflection units and the light-emitting elements located at the edge of the display area are arranged in one-to-one correspondence; in a direction parallel to the plane of the substrate, the second electrode of at least one of the second electrophoretic reflection units is located on a side of the first electrode away from the display area, and the color of the first electrophoretic particles of the second electrophoretic reflection unit is the same as the light-emitting color of the corresponding light-emitting element, and the color of the second electrophoretic particles is black; and / or in a direction parallel to the plane of the substrate, the first electrode of at least one of the second electrophoretic reflection units is located on a side of the second electrode away from the display area, and the color of the second electrophoretic particles of the second electrophoretic reflection unit is the same as the light-emitting color of the corresponding light-emitting element, and the color of the first electrophoretic particles is black.

12. The display panel according to claim 4, wherein a plurality of the electrophoretic reflection units include first electrophoretic reflection units and second electrophoretic reflection units; a plurality of the light-emitting elements include a first light-emitting element and a second light-emitting element arranged adjacent to each other; in a direction parallel to the plane of the substrate, the first electrophoretic reflection unit is located between the first light-emitting element and the second light-emitting element; the display panel includes a display area and a non-display area disposed around the display area, and the light-emitting element is located in the display area; the second electrophoretic reflection units are located in the non-display area; the width of the first electrophoretic reflection unit in the arrangement direction of its first electrode and second electrode is d1, and the width of the second electrophoretic reflection unit in the arrangement direction of its first electrode and second electrode is d2, and d2≥d1.

13. The display panel according to claim 1, wherein the first electrodes of different electrophoretic reflection units are electrically connected to each other; the second electrodes of different electrophoretic reflection units are electrically connected to each other.

14. The display panel according to claim 13, wherein the display panel further includes a first electrode connection layer and a second electrode connection layer, the plane of the first electrode connection layer is parallel to the plane of the substrate, the plane of the second electrode connection layer is parallel to the plane of the substrate, and the first electrode connection layer and the second electrode connection layer are respectively located on opposite sides of the electrophoresis layer; The first electrodes of different ones of the electrophoretic reflection units are all electrically connected to the first electrode connection layer; The second electrodes of different ones of the electrophoretic reflection units are all electrically connected to the second electrode connection layer.

15. The display panel according to claim 14, wherein The electrophoretic layer is disposed adjacent to the light-emitting element layer; The light-emitting element includes an anode layer, a light-emitting layer, and a cathode layer that are sequentially stacked on one side of the substrate; One of the first electrode connection layer and the second electrode connection layer is the same film layer as the cathode layer.

16. The display panel according to claim 14, wherein The display panel further includes a touch layer on a side of the light-emitting element layer facing away from the substrate; The electrophoretic layer is disposed adjacent to the touch layer.

17. The display panel according to claim 16, wherein The electrophoretic layer is located between the light-emitting element layer and the touch layer; One of the first electrode connection layer and the second electrode connection layer is disposed on a surface of the touch layer closer to the substrate.

18. The display panel according to claim 16, wherein The electrophoretic layer is located on a side of the touch layer facing away from the substrate; One of the first electrode connection layer and the second electrode connection layer is disposed on a surface of the touch layer facing away from the substrate.

19. The display panel according to claim 18, wherein The display panel further includes a color filter layer on a side of the touch layer away from the substrate, and the electrophoretic layer is located between the touch layer and the color filter layer; One of the first electrode connection layer and the second electrode connection layer is disposed on a surface of the touch layer facing away from the substrate, and the other is disposed on a surface of the color filter layer closer to the substrate.

20. The display panel according to claim 14, wherein The electrophoretic reflection unit further includes a first insulating barrier layer and a second insulating barrier layer; The first insulating barrier layer is located between the electrophoretic particles and the first electrode connection layer, and between the second electrode and the first electrode connection layer; The second insulating barrier layer is located between the electrophoretic particles and the second electrode connection layer, and between the first electrode and the second electrode connection layer.

21. The display panel according to claim 14, wherein A plurality of the electrophoretic reflection units are arranged in an array; In a plurality of the electrophoretic reflection units arranged in a row direction, the arrangement directions of the first electrode and the second electrode are the same; In a plurality of the electrophoretic reflection units arranged in a column direction, the arrangement directions of the first electrode and the second electrode are the same.

22. The display panel according to claim 14, wherein The materials of the first electrode connection layer and the second electrode connection layer are both conductive transparent materials.

23. The display panel according to claim 1, wherein The thickness of the electrophoretic layer is H1, where 1 μm ≤ H1 ≤ 2 μm.

24. A display device, characterized in that, Including the display panel according to any one of claims 1-23.

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