CN114551763A

CN114551763A - Display substrate and display device

Info

Publication number: CN114551763A
Application number: CN202210172600.0A
Authority: CN
Inventors: 许睿; 祝文秀; 盖人荣
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-05-27

Abstract

Display substrate and display device, the display substrate includes: the display structure layer and the light-emitting structure layer are sequentially arranged on the substrate, the display structure layer comprises at least one first pixel island and at least one second pixel island, the first pixel island and the second pixel island are arranged at intervals along a first direction, the light-emitting structure layer comprises a first driving electrode, a first dielectric layer, a second dielectric layer and a second driving electrode, the second dielectric layer comprises a second dielectric and a plurality of shading charge particles of first polarity which can move in the second dielectric, the first driving electrodes correspond to the first pixel islands one by one, and the orthographic projection of the first driving electrode is overlapped with the orthographic projection of the corresponding first pixel island and is positioned outside the orthographic projection of the second pixel island. In the scheme provided by this embodiment, by providing the light extraction structure layer including the light-shielding charge particles, when different voltages are applied to the first driving electrode and the second driving electrode of the display substrate, two-dimensional display and three-dimensional display can be respectively realized.

Description

Display substrate and display device

Technical Field

The present disclosure relates to but not limited to display technologies, and more particularly, to a display substrate and a display device.

Background

The Organic Light Emitting Diode (OLED) display mode has the remarkable characteristics of short response time, high color gamut, high contrast, thinness, lightness, thinness and the like, and is particularly suitable for high-end business and professional creation. Under a huge NoteBook (NoteBook, NB) market, the market share of the OLED NB is small, the advantages of high color gamut and high contrast of the OLED are maintained, some additional functions are added, and the method is one of effective ways for expanding the OLED NB market.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the disclosure provides a display substrate and a display device, which realize two-dimensional and three-dimensional display.

An embodiment of the present disclosure provides a display substrate, including: the display structure layer comprises at least one first pixel island and at least one second pixel island, the first pixel island and the second pixel island are arranged at intervals along a first direction, the first pixel island comprises at least one pixel, the second pixel island comprises at least one pixel, the light extraction structure layer comprises at least one first driving electrode, a first medium layer, a second medium layer and at least one second driving electrode, the first driving electrode is arranged on one side, far away from the substrate, of the display structure layer, the second medium layer is arranged on one side, far away from the substrate, of the first medium layer, the second medium layer comprises a second medium and a plurality of shading charge particles of first polarity, the shading charge particles can move in the second medium, the first driving electrodes are in one-to-one correspondence with the first pixel islands, the orthographic projection of the first driving electrodes on the substrate is overlapped with the orthographic projection of the corresponding first pixel islands on the substrate, and the orthographic projection of the first driving electrodes on the substrate is positioned outside the orthographic projection of the second pixel islands on the substrate.

In an exemplary embodiment, the light-shielding charged particles are black or dark charged particles.

In an exemplary embodiment, the light shielding charged particles are titanium ions.

In an exemplary embodiment, the first and second pixel islands include the same number of pixels, and pixel layouts of the first and second pixel islands are the same.

In an exemplary embodiment, the first pixel island includes a column of pixels, the second pixel island includes a column of pixels, and the first direction is a pixel row direction.

In an exemplary embodiment, the first polarity is negative.

In an exemplary embodiment, the pixel includes a plurality of sub-pixels, and the first medium layer includes a plurality of micro-lenses, one of the micro-lenses corresponds to at least one of the sub-pixels, and the micro-lenses are configured to transmit light emitted from the corresponding sub-pixel.

In an exemplary embodiment, the microlenses are in one-to-one correspondence with pixel islands in a pixel island set formed by a first pixel island and a second pixel island, and an orthographic projection of the microlens on the substrate overlaps with an orthographic projection of the corresponding pixel island on the substrate.

In an exemplary embodiment, a maximum width of the microlens in a direction perpendicular to an axis of the microlens on a plane parallel to the substrate

And i is a pixel interval, z is a distance between a viewpoint and one side of the light-emitting structure layer close to the substrate along the direction vertical to the substrate, and f is a height of the light-emitting structure layer along the direction vertical to the substrate.

An embodiment of the present disclosure provides a display device, including the display substrate according to any one of the above embodiments.

In an exemplary embodiment, the display device further includes a controller configured to, upon detecting a first display instruction, apply a voltage of a first polarity to the first and second driving electrodes; and when a second display instruction is detected, applying a voltage with a second polarity to the first driving electrode, and applying a voltage with a first polarity to the second driving electrode.

The disclosed embodiment includes a display substrate and a display device, the display substrate includes: the display structure layer comprises at least one first pixel island and at least one second pixel island, the first pixel island and the second pixel island are arranged at intervals along a first direction, the first pixel island comprises at least one pixel, the second pixel island comprises at least one pixel, the light extraction structure layer comprises at least one first driving electrode, a first medium layer, a second medium layer and at least one second driving electrode, the first driving electrode is arranged on one side, far away from the substrate, of the display structure layer, the second medium layer is arranged on one side, far away from the substrate, of the first medium layer, the second medium layer comprises a second medium and a plurality of shading charge particles of first polarity, the shading charge particles can move in the second medium, the first driving electrodes are in one-to-one correspondence with the first pixel islands, the orthographic projection of the first driving electrodes on the substrate is overlapped with the orthographic projection of the corresponding first pixel islands on the substrate, and the orthographic projection of the first driving electrodes on the substrate is positioned outside the orthographic projection of the second pixel islands on the substrate. In the scheme provided by this embodiment, by providing the light extraction structure layer including the light-shielding charge particles, when different voltages are applied to the first driving electrode and the second driving electrode of the display substrate, two-dimensional display and three-dimensional display can be respectively realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosed embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic cross-sectional view of a display substrate provided in accordance with an exemplary embodiment;

FIG. 2 is a schematic plan view of a display substrate provided in accordance with an exemplary embodiment;

FIG. 3 is a schematic illustration of the position of a first drive electrode and a pixel provided in an exemplary embodiment;

FIG. 4 is a schematic diagram illustrating the absorption of charge blocking particles according to an exemplary embodiment;

FIG. 5 is a schematic illustration of a light blocking charged particle adsorption provided by another exemplary embodiment;

fig. 6 is a schematic diagram of an optical path provided in an exemplary embodiment.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of conflict, the embodiments of the present disclosure and the features of the embodiments may be arbitrarily combined with each other.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

In the drawings, the size of each component, the thickness of layers, or regions may be exaggerated for clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to the dimensions, and the shapes and sizes of the respective components in the drawings do not reflect a true scale. Further, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or numerical values shown in the drawings.

The ordinal numbers such as "first", "second", "third", etc., in this disclosure are provided to avoid confusion among the constituent elements, and do not indicate any order, number, or importance.

In the present disclosure, for convenience, terms indicating orientation or positional relationship such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are used to explain positional relationship of constituent elements with reference to the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present disclosure. The positional relationship of the components is changed as appropriate in accordance with the direction in which each component is described. Therefore, the words described in the disclosure are not limited thereto, and may be replaced as appropriate.

In this disclosure, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically stated or limited. For example, it may be a fixed connection, or a removable connection, or an integral connection; can be a mechanical connection, or an electrical connection; either directly or indirectly through intervening components, or both may be interconnected. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, "electrically connected" includes a case where constituent elements are connected together by an element having some kind of electrical action. The "element having a certain electric function" is not particularly limited as long as it can transmit and receive an electric signal between connected components. Examples of the "element having some kind of electric function" include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, other elements having various functions, and the like.

In the present disclosure, "parallel" means a state in which an angle formed by two straight lines is-10 ° or more and 10 ° or less, and therefore, includes a state in which the angle is-5 ° or more and 5 ° or less. The term "perpendicular" refers to a state in which the angle formed by two straight lines is 80 ° or more and 100 ° or less, and therefore includes a state in which the angle is 85 ° or more and 95 ° or less.

In the present disclosure, "film" and "layer" may be interchanged with one another. For example, the "conductive layer" may be sometimes replaced with a "conductive film". Similarly, the "insulating film" may be replaced with an "insulating layer".

Fig. 1 is a schematic cross-sectional view of a display substrate according to an exemplary embodiment. Fig. 2 is a schematic plan view of a display substrate according to an exemplary embodiment. Fig. 3 is a schematic diagram of a position relationship between a first driving electrode and a pixel according to an exemplary embodiment. As shown in fig. 1 and fig. 2, the display substrate provided in this embodiment includes a display structure layer 100, a light extraction structure layer 200, a polarizer 30, and a cover plate 40 sequentially disposed on a substrate 1. The display structure layer 100 may include at least one first pixel island 101 and at least one second pixel island 102, the first pixel island 101 and the second pixel island 102 are spaced apart along a first direction, the first pixel island 101 includes at least one pixel, and the second pixel island 102 includes at least one pixel.

As shown in fig. 1, the display structure layer 100 may include a driving structure layer 10, a first electrode layer, a pixel defining layer 12, a light emitting layer 13, a second electrode layer 14, and an encapsulation layer 15, which are sequentially disposed on a plane perpendicular to the substrate 1, and the first electrode layer may include a plurality of first electrodes 11. The second electrode layer 15 may include a second electrode.

The light exit structure layer 200 may include: the display device comprises a first driving electrode layer arranged on one side of the display structure layer 100 far away from the substrate 1, a first dielectric layer 22 arranged on one side of the first driving electrode layer far away from the substrate 1, a second dielectric layer 23 arranged on one side of the first dielectric layer 22 far away from the substrate 1, and a second driving electrode layer 24 arranged on one side of the second dielectric layer 23 far away from the substrate 1; the first driving electrode layer may include a plurality of first driving electrodes 21, the first driving electrodes 21 may correspond to the first pixel islands 101 one by one, an orthogonal projection of the first driving electrode 21 on the substrate 1 overlaps an orthogonal projection of the corresponding first pixel island 101 on the substrate 1, and an orthogonal projection of the first driving electrode 21 on the substrate 1 is located outside an orthogonal projection of the second pixel island 102 on the substrate 1. The second dielectric layer 23 may include a second dielectric 232 and a plurality of light-shielding charged particles 231 of the first polarity movable in the second dielectric 232.

The second driving electrode layer 24 may include a plurality of second driving electrodes, the second driving electrodes correspond to the first driving electrodes 21 one by one, and an orthogonal projection of the second driving electrodes on the substrate 1 overlaps an orthogonal projection of the first driving electrodes 21 corresponding to the second driving electrodes on the substrate 1. The plurality of second driving electrodes of the second driving electrode layer 24 may be connected to each other to form a full-area electrode.

In the scheme provided by this embodiment, when the voltage of the first polarity is applied to the first driving electrode 21 and the second driving electrode, the light-shielding charge particles 231 are uniformly dispersed in the second medium 232, and since the light-shielding charge particles 231 are not too many, the influence on the transmittance is small, and two-dimensional display can be realized, as shown in fig. 1. When a voltage with a second polarity is applied to the first driving electrode 21 and a voltage with a first polarity is applied to the second driving electrode, the light-shielding charge particles 231 are attracted by the first driving electrode 21 and adsorbed on the surface of the first region of the first dielectric layer 22 corresponding to the first driving electrode 21, the orthographic projection of the first region on the substrate 1 is consistent with the orthographic projection of the first driving electrode 21 on the substrate 1, so that at least part of pixels of the first pixel island 101 are shielded by the light-shielding charge particles 231, and the pixels of the second pixel island 102 normally emit light, and the light emitted to left and right eyes is inconsistent, so that three-dimensional display can be realized. Wherein the first polarity and the second polarity are different.

According to the display substrate provided by the embodiment, the light emergent structure layer containing the shading charge particles is arranged, and when different voltages are applied to the first driving electrode and the second driving electrode of the display substrate, two-dimensional display and three-dimensional display can be respectively realized.

In an exemplary embodiment, the first driving electrode 21 and the second driving electrode may be transparent electrodes. The first driving electrode 21 and the second driving electrode may be made of Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), or the like.

In an exemplary embodiment, the first polarity is, for example, positive or negative, i.e., the light blocking charge particles 231 are positive charge particles or negative charge particles. When the light-shielding charge particles 231 are negatively charged, and negative voltages are applied to the first driving electrode 21 and the second driving electrode, the light-shielding charge particles 231 are uniformly distributed in the second medium 232, and the pixel emits light normally, so that two-dimensional display is realized; when a positive voltage is applied to the first driving electrode 21 and a negative voltage is applied to the second driving electrode, the light-shielding charge particles 231 are adsorbed on the surface of the first dielectric layer 22, which is close to the second dielectric layer 23 and corresponds to the first driving electrode 21, so that the pixel emits light normally, and three-dimensional display is realized. When the light-shielding charge particles 231 are positively charged, and positive voltages are loaded on the first driving electrode 21 and the second driving electrode, the light-shielding charge particles 231 are uniformly distributed in the second medium 232, and the pixels normally emit light, so that two-dimensional display is realized; when a negative voltage is applied to the first driving electrode 21 and a positive voltage is applied to the second driving electrode, the light-shielding charge particles 231 are adsorbed on the surface of the first dielectric layer 22 close to the second dielectric layer 23 corresponding to the first driving electrode 21, so that the pixel emits light normally, and three-dimensional display is realized.

In an exemplary embodiment, the first direction is, for example, a pixel row direction, or a pixel column direction.

In an exemplary embodiment, the light shielding charge particles 231 are, for example, charge particles of black or dark color, thereby achieving light shielding.

In an exemplary embodiment, the light shielding charged particles 231 are, for example, titanium ions.

In an exemplary embodiment, the pixel may include a plurality of sub-pixels, for example, a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel. The first color sub-pixel is, for example, a red sub-pixel R, the second color sub-pixel is, for example, a blue sub-pixel B, and the third color sub-pixel is, for example, a green sub-pixel G, as shown in fig. 2. The layout of the red sub-pixel R, the blue sub-pixel B, and the green sub-pixel G is only an example, and the embodiment of the disclosure does not limit this. In another exemplary embodiment, the pixel may include four sub-pixels, such as one red sub-pixel, one blue sub-pixel, and two green sub-pixels, and so on.

In an exemplary embodiment, the first pixel island 101 and the second pixel island 102 may include the same number of pixels, and the pixel layout of the first pixel island 101 and the second pixel island 102 is the same, for example, the first pixel island 101 includes two pixels arranged along the pixel row direction, and the second pixel island 102 includes two pixels arranged along the pixel row direction.

In an exemplary embodiment, the first pixel island 101 includes, for example, a column or a row of pixels, and the second pixel island 102 includes, for example, a column or a row of pixels, as shown in fig. 2. The embodiment of the present disclosure is not limited thereto, and the first pixel island 101 includes, for example, one pixel, and the second pixel island 102 includes, for example, one pixel; alternatively, the first pixel island 101 includes two pixels, the second pixel island 102 includes two pixels, and so on. A row of pixels is, for example, a group of pixels connected to the same scanning signal line.

In an exemplary embodiment, as shown in fig. 3, an orthographic projection of the first pixel island 101 on the substrate 1 is located within an orthographic projection of the first driving electrode 21 on the substrate 1, wherein the pixel defining layer 12 includes a plurality of pixel openings, and an orthographic projection of the first pixel island 101 on the substrate 1 is located within an orthographic projection of the first driving electrode 21 on the substrate 1 includes: the orthographic projection of the pixel opening of the first pixel island 101 on the substrate 1 is positioned in the orthographic projection of the first driving electrode 21 on the substrate 1. Accordingly, when a voltage having a polarity different from that of the light-shielding charge particles 231 is applied to the first drive electrode 21, the first drive electrode 21 attracts the light-shielding charge particles 231 to shield light emitted from the pixels of the first pixel island 101.

In an exemplary embodiment, the plurality of first driving electrodes 21 may be electrically connected through the connection electrode 25, and applied with the same voltage signal, as shown in fig. 3. The connection manner shown in fig. 3 is merely an example, and the embodiments of the present disclosure are not limited thereto.

In an exemplary embodiment, the first medium layer 22 may include a plurality of micro lenses 221, one micro lens 221 corresponds to at least one sub-pixel, and the micro lens 221 is configured to transmit light emitted from the corresponding sub-pixel. In this embodiment, the light with a large angle emitted by the sub-pixels can be emitted from the micro-lenses corresponding to the sub-pixels, so that the utilization rate of the light is improved, and the light extraction efficiency is improved.

In an exemplary embodiment, the refractive index of the second medium layer 23 may be smaller than the refractive index of the first medium forming the microlens 221.

In an exemplary embodiment, one of the microlenses 221 may correspond to one sub-pixel, or may correspond to one pixel island, which may be the first pixel island 101 or the second pixel island 102. As shown in fig. 1, one microlens 221 corresponds to one pixel island.

In an exemplary embodiment, the microlenses 221 may correspond to pixel islands in a pixel island set formed by the first pixel island 101 and the second pixel island 102 in a one-to-one manner, and a forward projection of the microlens 221 on the substrate 1 overlaps with a forward projection of the pixel island corresponding to the microlens 221 on the substrate 1. That is, one microlens 221 per first pixel island 101 and one microlens 221 per second pixel island 102. In an exemplary embodiment, the first pixel island 101 includes a column of pixels, the second pixel island 102 includes a column of pixels, and the micro lenses 221 may be cylindrical lenses whose axes may be parallel to the pixel column direction.

Fig. 4 is a schematic diagram of the absorption of light-shielding charged particles according to an exemplary embodiment. As shown in fig. 4, in the present embodiment, the first driving electrode 21 corresponds to one pixel island, one pixel island corresponds to one microlens 221, and the light-shielding charge particles are negative charge particles. When the first driving electrode 21 is applied with a positive voltage and the second driving electrode is applied with a negative voltage, the light-shielding charge particles 231 are adsorbed on the surface of the microlens 221 near the second dielectric layer 23.

In another exemplary embodiment, as shown in fig. 5, when the first pixel island 101 corresponds to two microlenses (one microlens for each column of sub-pixels), and the first driving electrode 21 corresponds to the first pixel island 101, when the first driving electrode 21 is applied with a positive voltage and the second driving electrode is applied with a negative voltage, the light-shielding charge particles 231 are adsorbed on the surfaces of the two microlenses 221 corresponding to the first pixel island 101 near the second dielectric layer 23 and the surface of the region between the two microlenses 221.

In an exemplary embodiment, the first dielectric layer 22 may be made of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), resin, or the like. For example, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), or a resin material may be used as a base material on which the microlens 221 pattern is obtained by uv curing, embossing, or the like.

In an exemplary embodiment, the second medium 232 may be prepared using a neutral dispersant, which may be an organic or inorganic dispersant.

In an exemplary embodiment, the driving structure layer 10 may include an active layer, a gate electrode, a source electrode, a drain electrode, and the like, which are sequentially disposed on a substrate.

In an exemplary embodiment, the display substrate may be an OLED display substrate, or a Quantum Dot Light Emitting Diode (QLED) display substrate. Fig. 6 is a schematic diagram of optical paths provided by an exemplary implementation. Take the display substrate as the display substrate of the notebook as an example. As shown in fig. 6, a person is divided into two viewpoints: and the viewpoint 1 and the viewpoint 2, the light ray of the region R enters the viewpoint 1, the light ray of the region L enters the viewpoint 2, and the size of the region L is the same as that of the region R. A maximum width of the microlens 221 in a direction perpendicular to an axis of the microlens 221 on a plane parallel to the substrate 1

The width l of the microlens 221 is in a plane perpendicular to the axis of the microlensThe distance between two points with the longest distance in the cross section of the lens is set as i, i is the pixel distance, z is the distance between the viewpoint and one side of the light-emitting structure layer 200 close to the substrate 1 along the direction vertical to the substrate 1, and f is the height of the light-emitting structure layer 200 along the direction vertical to the substrate 1. Z is 500mm (mm) to 600mm, f ≦ 0.5mm, i may be 21.5 micrometers (um) to 106um, and if f is 0.5mm, l may be 43um to 212um, for example.

In an exemplary embodiment, when a viewing distance (i.e., a distance between a viewpoint 1 or a viewpoint 2 and a side of the light exit structure layer 200 close to the substrate 1) z may be 500mm to 600mm, in this embodiment, 600mm is taken, a pixel density of the display substrate is 240(Pixels Per Inch, PPI), a pixel pitch (pixel pitch) i is 106um, and a distance between human eyes (a distance between the viewpoint 1 and the viewpoint 2) e is 65mm, for example. The thickness f of the light-emitting structure layer 200 in the direction perpendicular to the substrate 1 is 0.5mm, for example, according to the above formula

The width l of the obtained micro lens is about 211.8um by calculation, and the process is easy to realize. 211.8um in this embodiment is only an example, and may be set to other values as needed, and in this embodiment, one microlens may correspond to two columns of pixels.

The following further illustrates the technical solution of this embodiment through the manufacturing process of the display substrate of this embodiment. The "patterning process" in this embodiment includes processes of depositing a film, coating a photoresist, exposing a mask, developing, etching, and stripping the photoresist, and is a well-established manufacturing process in the related art. The "photolithography process" referred to in this embodiment includes coating film coating, mask exposure, and development, and is a well-established production process in the related art. The deposition may be performed by a known process such as sputtering, evaporation, chemical vapor deposition, etc., the coating may be performed by a known coating process, and the etching may be performed by a known method, which is not particularly limited herein. In the description of the present embodiment, it is to be understood that "thin film" refers to a layer of a material deposited or coated on a substrate. The "thin film" may also be referred to as a "layer" if it does not require a patterning process or a photolithography process throughout the fabrication process. If a patterning process or a photolithography process is required for the "thin film" in the entire manufacturing process, the "thin film" is referred to as a "thin film" before the patterning process, and the "layer" after the patterning process. The "layer" after the patterning process or the photolithography process includes at least one "pattern". The "a and B are disposed in the same layer" in the present disclosure means that a and B are simultaneously formed by the same patterning process.

The preparation of the display substrate comprises the following steps:

forming a substrate 1;

forming a driving structure layer 10 on a substrate 1;

forming a first electrode layer, a pixel defining layer 12, a light emitting layer 13, a second electrode layer 14 and an encapsulation layer 15 in sequence on the side of the driving structure layer 10 away from the substrate 1;

depositing a transparent conductive film on one side of the packaging layer 15, which is far away from the substrate 1, and patterning the transparent conductive film through a patterning process to form a first driving electrode 21 pattern;

coating a first dielectric film on one side of the first driving electrode 21 far away from the substrate 1, and forming a first dielectric layer 22 pattern through nanoimprint;

coating a second medium film mixed with the shading charge particles 231 on one side of the first medium layer 22 away from the substrate to form a second medium layer 23 pattern;

and depositing a transparent conductive film on one side of the second dielectric layer 23 far away from the substrate 1 to form a second driving electrode layer 24.

In another exemplary embodiment, the display structure layer 100 may be prepared on one substrate, the light emitting structure layer 200 may be prepared on another substrate, and then the light emitting structure layer 200 is attached to the side of the display structure layer 100 away from the substrate 1.

The embodiment of the disclosure also provides a display device, which includes the display substrate of the foregoing embodiment.

In an exemplary embodiment, the display device may further include a controller configured to, upon detecting a first display instruction, apply a voltage of a first polarity to the first and second driving electrodes; and when a second display instruction is detected, applying a voltage with a second polarity to the first driving electrode, and applying a voltage with a first polarity to the second driving electrode. In this embodiment, the first display instruction is, for example, an instruction for performing two-dimensional display, and the second display instruction is, for example, an instruction for performing three-dimensional display, where the first display instruction and the second display instruction may be instructions input by a user, or parameters of a display selection key set by the display device, or the like.

The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

Although the embodiments of the present invention have been described above, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A display substrate, comprising: the display structure layer comprises at least one first pixel island and at least one second pixel island, the first pixel island and the second pixel island are arranged at intervals along a first direction, the first pixel island comprises at least one pixel, and the second pixel island comprises at least one pixel; the light-emitting structure layer comprises: the display structure layer comprises at least one first driving electrode, a first dielectric layer, a second dielectric layer and at least one second driving electrode, wherein the first driving electrode is arranged on one side of the display structure layer, which is far away from a substrate; the second medium layer comprises a second medium and a plurality of shading charge particles with first polarity which can move in the second medium; the first driving electrodes are in one-to-one correspondence with the first pixel islands, the orthographic projection of the first driving electrodes on the substrate is overlapped with the orthographic projection of the corresponding first pixel islands on the substrate, and the orthographic projection of the first driving electrodes on the substrate is positioned outside the orthographic projection of the second pixel islands on the substrate.

2. The display substrate according to claim 1, wherein the light-shielding charged particles are charged particles having a black color or a dark color.

3. The display substrate of claim 1, wherein the light-blocking charged particles comprise titanium ions.

4. The display substrate according to claim 1, wherein the first pixel island and the second pixel island include the same number of pixels, and pixel layouts of the first pixel island and the second pixel island are the same.

5. The display substrate of claim 1, wherein the first pixel island comprises a column of pixels and the second pixel island comprises a column of pixels, and wherein the first direction is a pixel row direction.

6. The display substrate of claim 1, wherein the first polarity is negative.

7. The display substrate according to any one of claims 1 to 6, wherein the pixel comprises a plurality of sub-pixels, the first dielectric layer comprises a plurality of micro-lenses, one micro-lens corresponds to at least one sub-pixel, and the micro-lenses are used for transmitting light emitted from the corresponding sub-pixel.

8. The display substrate according to claim 7, wherein the microlenses are in one-to-one correspondence with pixel islands in a set of pixel islands consisting of a first pixel island and a second pixel island, and wherein an orthographic projection of the microlenses on the substrate overlaps with an orthographic projection of the pixel islands corresponding to the microlenses on the substrate.

9. The display substrate of claim 7, wherein the microlenses have a maximum width in a direction perpendicular to an axis of the microlenses in a plane parallel to the base

10. A display device comprising the display substrate according to any one of claims 1 to 9.

11. The display device according to claim 10, further comprising a controller configured to, upon detecting a first display command, apply a voltage of a first polarity to the first and second driving electrodes; and when a second display instruction is detected, applying a voltage with a second polarity to the first driving electrode, and applying a voltage with a first polarity to the second driving electrode.